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->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->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->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->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->device_name, cli->dev_name, cli->dev_name_len);
 337         dev->device_name[cli->dev_name_len] = '\0';
 338         dev->dev_capab = cli->dev_capab;
 339         dev->config_methods = cli->config_methods;
 340         os_memcpy(dev->pri_dev_type, cli->pri_dev_type, 8);
 341 }
 342
 343
 344 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
 345                                  const u8 *go_interface_addr, int freq,
 346                                  const u8 *gi, size_t gi_len)
 347 {
 348         struct p2p_group_info info;
 349         size_t c;
 350         struct p2p_device *dev;
 351
 352         if (gi == NULL)
 353                 return 0;
 354
 355         if (p2p_group_info_parse(gi, gi_len, &info) < 0)
 356                 return -1;
 357
 358         /*
 359          * Clear old data for this group; if the devices are still in the
 360          * group, the information will be restored in the loop following this.
 361          */
 362         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 363                 if (os_memcpy(dev->member_in_go_iface, go_interface_addr,
 364                               ETH_ALEN) == 0) {
 365                         os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
 366                         os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
 367                 }
 368         }
 369
 370         for (c = 0; c < info.num_clients; c++) {
 371                 struct p2p_client_info *cli = &info.client[c];
 372                 dev = p2p_get_device(p2p, cli->p2p_device_addr);
 373                 if (dev) {
 374                         /*
 375                          * Update information only if we have not received this
 376                          * directly from the client.
 377                          */
 378                         if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
 379                                           P2P_DEV_PROBE_REQ_ONLY))
 380                                 p2p_copy_client_info(dev, cli);
 381                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
 382                                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
 383                         }
 384                 } else {
 385                         dev = p2p_create_device(p2p, cli->p2p_device_addr);
 386                         if (dev == NULL)
 387                                 continue;
 388                         dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
 389                         p2p_copy_client_info(dev, cli);
 390                         dev->oper_freq = freq;
 391                         p2p->cfg->dev_found(
 392                                 p2p->cfg->cb_ctx, dev->p2p_device_addr,
 393                                 dev->p2p_device_addr, dev->pri_dev_type,
 394                                 dev->device_name, dev->config_methods,
 395                                 dev->dev_capab, 0);
 396                 }
 397
 398                 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
 399                           ETH_ALEN);
 400                 os_get_time(&dev->last_seen);
 401                 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
 402                 os_memcpy(dev->member_in_go_iface, go_interface_addr,
 403                           ETH_ALEN);
 404         }
 405
 406         return 0;
 407 }
 408
 409
 410 /**
 411  * p2p_add_device - Add peer entries based on scan results
 412  * @p2p: P2P module context from p2p_init()
 413  * @addr: Source address of Beacon or Probe Response frame (may be either
 414  *      P2P Device Address or P2P Interface Address)
 415  * @level: Signal level (signal strength of the received frame from the peer)
 416  * @freq: Frequency on which the Beacon or Probe Response frame was received
 417  * @ies: IEs from the Beacon or Probe Response frame
 418  * @ies_len: Length of ies buffer in octets
 419  * Returns: 0 on success, -1 on failure
 420  *
 421  * If the scan result is for a GO, the clients in the group will also be added
 422  * to the peer table. This function can also be used with some other frames
 423  * like Provision Discovery Request that contains P2P Capability and P2P Device
 424  * Info attributes.
 425  */
 426 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq, int level,
 427                    const u8 *ies, size_t ies_len)
 428 {
 429         struct p2p_device *dev;
 430         struct p2p_message msg;
 431         const u8 *p2p_dev_addr;
 432
 433         os_memset(&msg, 0, sizeof(msg));
 434         if (p2p_parse_ies(ies, ies_len, &msg)) {
 435                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 436                         "P2P: Failed to parse P2P IE for a device entry");
 437                 p2p_parse_free(&msg);
 438                 return -1;
 439         }
 440
 441         if (msg.p2p_device_addr)
 442                 p2p_dev_addr = msg.p2p_device_addr;
 443         else if (msg.device_id)
 444                 p2p_dev_addr = msg.device_id;
 445         else {
 446                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 447                         "P2P: Ignore scan data without P2P Device Info or "
 448                         "P2P Device Id");
 449                 p2p_parse_free(&msg);
 450                 return -1;
 451         }
 452
 453         if (!is_zero_ether_addr(p2p->peer_filter) &&
 454             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 455                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Do not add peer "
 456                         "filter for " MACSTR " due to peer filter",
 457                         MAC2STR(p2p_dev_addr));
 458                 return 0;
 459         }
 460
 461         dev = p2p_create_device(p2p, p2p_dev_addr);
 462         if (dev == NULL) {
 463                 p2p_parse_free(&msg);
 464                 return -1;
 465         }
 466         os_get_time(&dev->last_seen);
 467         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
 468
 469         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 470                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 471         if (msg.ssid &&
 472             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 473              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 474              != 0)) {
 475                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 476                 dev->oper_ssid_len = msg.ssid[1];
 477         }
 478
 479         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 480             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 481                 int ds_freq;
 482                 if (*msg.ds_params == 14)
 483                         ds_freq = 2484;
 484                 else
 485                         ds_freq = 2407 + *msg.ds_params * 5;
 486                 if (freq != ds_freq) {
 487                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 488                                 "P2P: Update Listen frequency based on DS "
 489                                 "Parameter Set IE: %d -> %d MHz",
 490                                 freq, ds_freq);
 491                         freq = ds_freq;
 492                 }
 493         }
 494
 495         if (dev->listen_freq && dev->listen_freq != freq) {
 496                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 497                         "P2P: Update Listen frequency based on scan "
 498                         "results (" MACSTR " %d -> %d MHz (DS param %d)",
 499                         MAC2STR(dev->p2p_device_addr), dev->listen_freq, freq,
 500                         msg.ds_params ? *msg.ds_params : -1);
 501         }
 502         dev->listen_freq = freq;
 503         if (msg.group_info)
 504                 dev->oper_freq = freq;
 505         dev->level = level;
 506
 507         if (msg.pri_dev_type)
 508                 os_memcpy(dev->pri_dev_type, msg.pri_dev_type,
 509                           sizeof(dev->pri_dev_type));
 510         os_memcpy(dev->device_name, msg.device_name, sizeof(dev->device_name));
 511         dev->config_methods = msg.config_methods ? msg.config_methods :
 512                 msg.wps_config_methods;
 513         if (msg.capability) {
 514                 dev->dev_capab = msg.capability[0];
 515                 dev->group_capab = msg.capability[1];
 516         }
 517
 518         if (msg.ext_listen_timing) {
 519                 dev->ext_listen_period = WPA_GET_LE16(msg.ext_listen_timing);
 520                 dev->ext_listen_interval =
 521                         WPA_GET_LE16(msg.ext_listen_timing + 2);
 522         }
 523
 524         p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq, msg.group_info,
 525                               msg.group_info_len);
 526
 527         p2p_parse_free(&msg);
 528
 529         if (p2p_pending_sd_req(p2p, dev))
 530                 dev->flags |= P2P_DEV_SD_SCHEDULE;
 531
 532         if (dev->flags & P2P_DEV_REPORTED)
 533                 return 0;
 534
 535         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 536                 "P2P: Peer found with Listen frequency %d MHz", freq);
 537         if (dev->flags & P2P_DEV_USER_REJECTED) {
 538                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 539                         "P2P: Do not report rejected device");
 540                 return 0;
 541         }
 542         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, dev->p2p_device_addr,
 543                             dev->pri_dev_type, dev->device_name,
 544                             dev->config_methods, dev->dev_capab,
 545                             dev->group_capab);
 546         dev->flags |= P2P_DEV_REPORTED;
 547
 548         return 0;
 549 }
 550
 551
 552 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
 553 {
 554         if (p2p->go_neg_peer == dev)
 555                 p2p->go_neg_peer = NULL;
 556         if (p2p->invite_peer == dev)
 557                 p2p->invite_peer = NULL;
 558         if (p2p->sd_peer == dev)
 559                 p2p->sd_peer = NULL;
 560         if (p2p->pending_client_disc_go == dev)
 561                 p2p->pending_client_disc_go = NULL;
 562
 563         os_free(dev);
 564 }
 565
 566
 567 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
 568 {
 569         struct p2p_channels *c;
 570         struct p2p_reg_class *cla;
 571         size_t cl, ch;
 572         int found = 0;
 573         u8 reg_class;
 574         u8 channel;
 575         int freq;
 576
 577         c = &p2p->cfg->channels;
 578         for (cl = 0; cl < c->reg_classes; cl++) {
 579                 cla = &c->reg_class[cl];
 580                 if (cla->reg_class != p2p->last_prog_scan_class)
 581                         continue;
 582                 for (ch = 0; ch < cla->channels; ch++) {
 583                         if (cla->channel[ch] == p2p->last_prog_scan_chan) {
 584                                 found = 1;
 585                                 break;
 586                         }
 587                 }
 588                 if (found)
 589                         break;
 590         }
 591
 592         if (!found) {
 593                 /* Start from beginning */
 594                 reg_class = c->reg_class[0].reg_class;
 595                 channel = c->reg_class[0].channel[0];
 596         } else {
 597                 /* Pick the next channel */
 598                 ch++;
 599                 if (ch == cla->channels) {
 600                         cl++;
 601                         if (cl == c->reg_classes)
 602                                 cl = 0;
 603                         ch = 0;
 604                 }
 605                 reg_class = c->reg_class[cl].reg_class;
 606                 channel = c->reg_class[cl].channel[ch];
 607         }
 608
 609         freq = p2p_channel_to_freq(p2p->cfg->country, reg_class, channel);
 610         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Next progressive search "
 611                 "channel: reg_class %u channel %u -> %d MHz",
 612                 reg_class, channel, freq);
 613         p2p->last_prog_scan_class = reg_class;
 614         p2p->last_prog_scan_chan = channel;
 615
 616         if (freq == 2412 || freq == 2437 || freq == 2462)
 617                 return 0; /* No need to add social channels */
 618         return freq;
 619 }
 620
 621
 622 static void p2p_search(struct p2p_data *p2p)
 623 {
 624         int freq = 0;
 625         enum p2p_scan_type type;
 626
 627         if (p2p->drv_in_listen) {
 628                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is still "
 629                         "in Listen state - wait for it to end before "
 630                         "continuing");
 631                 return;
 632         }
 633         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
 634
 635         if (p2p->go_neg_peer) {
 636                 /*
 637                  * Only scan the known listen frequency of the peer
 638                  * during GO Negotiation start.
 639                  */
 640                 freq = p2p->go_neg_peer->listen_freq;
 641                 if (freq <= 0)
 642                         freq = p2p->go_neg_peer->oper_freq;
 643                 type = P2P_SCAN_SPECIFIC;
 644                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
 645                         "for freq %u (GO Neg)", freq);
 646         } else if (p2p->invite_peer) {
 647                 /*
 648                  * Only scan the known listen frequency of the peer
 649                  * during Invite start.
 650                  */
 651                 freq = p2p->invite_peer->listen_freq;
 652                 if (freq <= 0)
 653                         freq = p2p->invite_peer->oper_freq;
 654                 type = P2P_SCAN_SPECIFIC;
 655                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
 656                         "for freq %u (Invite)", freq);
 657         } else if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
 658                    (freq = p2p_get_next_prog_freq(p2p)) > 0) {
 659                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
 660                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search "
 661                         "(+ freq %u)", freq);
 662         } else {
 663                 type = P2P_SCAN_SOCIAL;
 664                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting search");
 665         }
 666
 667         if (p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq) < 0) {
 668                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 669                         "P2P: Scan request failed");
 670                 p2p_continue_find(p2p);
 671         } else {
 672                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
 673                 p2p->p2p_scan_running = 1;
 674                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
 675                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
 676                                        p2p, NULL);
 677         }
 678 }
 679
 680
 681 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
 682 {
 683         struct p2p_data *p2p = eloop_ctx;
 684         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Find timeout -> stop");
 685         p2p_stop_find(p2p);
 686 }
 687
 688
 689 static int p2p_run_after_scan(struct p2p_data *p2p)
 690 {
 691         struct p2p_device *dev;
 692         enum p2p_after_scan op;
 693
 694         op = p2p->start_after_scan;
 695         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
 696         switch (op) {
 697         case P2P_AFTER_SCAN_NOTHING:
 698                 break;
 699         case P2P_AFTER_SCAN_LISTEN:
 700                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
 701                         "requested Listen state");
 702                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
 703                            p2p->pending_listen_usec / 1000);
 704                 return 1;
 705         case P2P_AFTER_SCAN_CONNECT:
 706                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Start previously "
 707                         "requested connect with " MACSTR,
 708                         MAC2STR(p2p->after_scan_peer));
 709                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
 710                 if (dev == NULL) {
 711                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer not "
 712                                 "known anymore");
 713                         break;
 714                 }
 715                 p2p_connect_send(p2p, dev);
 716                 return 1;
 717         }
 718
 719         return 0;
 720 }
 721
 722
 723 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
 724 {
 725         struct p2p_data *p2p = eloop_ctx;
 726         int running;
 727         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan timeout "
 728                 "(running=%d)", p2p->p2p_scan_running);
 729         running = p2p->p2p_scan_running;
 730         /* Make sure we recover from missed scan results callback */
 731         p2p->p2p_scan_running = 0;
 732
 733         if (running)
 734                 p2p_run_after_scan(p2p);
 735 }
 736
 737
 738 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
 739              enum p2p_discovery_type type)
 740 {
 741         int res;
 742
 743         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Starting find (type=%d)",
 744                 type);
 745         if (p2p->p2p_scan_running) {
 746                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan is "
 747                         "already running");
 748         }
 749         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
 750         p2p_clear_timeout(p2p);
 751         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
 752         p2p->find_type = type;
 753         p2p_device_clear_reported(p2p);
 754         p2p_set_state(p2p, P2P_SEARCH);
 755         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
 756         if (timeout)
 757                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
 758                                        p2p, NULL);
 759         switch (type) {
 760         case P2P_FIND_START_WITH_FULL:
 761         case P2P_FIND_PROGRESSIVE:
 762                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0);
 763                 break;
 764         case P2P_FIND_ONLY_SOCIAL:
 765                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0);
 766                 break;
 767         default:
 768                 return -1;
 769         }
 770
 771         if (res == 0) {
 772                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Running p2p_scan");
 773                 p2p->p2p_scan_running = 1;
 774                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
 775                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
 776                                        p2p, NULL);
 777         } else {
 778                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
 779                         "p2p_scan");
 780         }
 781
 782         return res;
 783 }
 784
 785
 786 void p2p_stop_find(struct p2p_data *p2p)
 787 {
 788         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Stopping find");
 789         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
 790         p2p_clear_timeout(p2p);
 791         p2p_set_state(p2p, P2P_IDLE);
 792         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
 793         p2p->go_neg_peer = NULL;
 794         p2p->sd_peer = NULL;
 795         p2p->invite_peer = NULL;
 796         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
 797 }
 798
 799
 800 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
 801                 enum p2p_wps_method wps_method,
 802                 int go_intent, const u8 *own_interface_addr,
 803                 unsigned int force_freq, int persistent_group)
 804 {
 805         struct p2p_device *dev;
 806
 807         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 808                 "P2P: Request to start group negotiation - peer=" MACSTR
 809                 "  GO Intent=%d  Intended Interface Address=" MACSTR
 810                 " wps_method=%d persistent_group=%d",
 811                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
 812                 wps_method, persistent_group);
 813
 814         if (force_freq) {
 815                 if (p2p_freq_to_channel(p2p->cfg->country, force_freq,
 816                                         &p2p->op_reg_class, &p2p->op_channel) <
 817                     0) {
 818                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 819                                 "P2P: Unsupported frequency %u MHz",
 820                                 force_freq);
 821                         return -1;
 822                 }
 823                 p2p->channels.reg_classes = 1;
 824                 p2p->channels.reg_class[0].channels = 1;
 825                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
 826                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
 827         } else {
 828                 p2p->op_reg_class = p2p->cfg->op_reg_class;
 829                 p2p->op_channel = p2p->cfg->op_channel;
 830                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
 831                           sizeof(struct p2p_channels));
 832         }
 833         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 834                 "P2P: Own preference for operation channel: "
 835                 "Regulatory Class %u Channel %u%s",
 836                 p2p->op_reg_class, p2p->op_channel,
 837                 force_freq ? " (forced)" : "");
 838
 839         dev = p2p_get_device(p2p, peer_addr);
 840         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
 841                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 842                         "P2P: Cannot connect to unknown P2P Device " MACSTR,
 843                         MAC2STR(peer_addr));
 844                 return -1;
 845         }
 846
 847         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
 848                 if (!(dev->dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
 849                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 850                                 "P2P: Cannot connect to P2P Device " MACSTR
 851                                 " that is in a group and is not discoverable",
 852                                 MAC2STR(peer_addr));
 853                         return -1;
 854                 }
 855                 if (dev->oper_freq <= 0) {
 856                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 857                                 "P2P: Cannot connect to P2P Device " MACSTR
 858                                 " with incomplete information",
 859                                 MAC2STR(peer_addr));
 860                         return -1;
 861                 }
 862
 863                 /*
 864                  * First, try to connect directly. If the peer does not
 865                  * acknowledge frames, assume it is sleeping and use device
 866                  * discoverability via the GO at that point.
 867                  */
 868         }
 869
 870         dev->flags &= ~P2P_DEV_NOT_YET_READY;
 871         dev->flags &= ~P2P_DEV_USER_REJECTED;
 872         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
 873         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
 874         dev->go_neg_req_sent = 0;
 875         dev->go_state = UNKNOWN_GO;
 876         if (persistent_group)
 877                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
 878         else
 879                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_GROUP;
 880         p2p->go_intent = go_intent;
 881         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
 882
 883         if (p2p->state != P2P_IDLE)
 884                 p2p_stop_find(p2p);
 885
 886         dev->wps_method = wps_method;
 887         dev->status = P2P_SC_SUCCESS;
 888
 889         if (force_freq)
 890                 dev->flags |= P2P_DEV_FORCE_FREQ;
 891         else
 892                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
 893
 894         if (p2p->p2p_scan_running) {
 895                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 896                         "P2P: p2p_scan running - delay connect send");
 897                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
 898                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
 899                 return 0;
 900         }
 901         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
 902
 903         return p2p_connect_send(p2p, dev);
 904 }
 905
 906
 907 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
 908                   enum p2p_wps_method wps_method,
 909                   int go_intent, const u8 *own_interface_addr,
 910                   unsigned int force_freq, int persistent_group)
 911 {
 912         struct p2p_device *dev;
 913
 914         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 915                 "P2P: Request to authorize group negotiation - peer=" MACSTR
 916                 "  GO Intent=%d  Intended Interface Address=" MACSTR
 917                 " wps_method=%d  persistent_group=%d",
 918                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
 919                 wps_method, persistent_group);
 920
 921         if (force_freq) {
 922                 if (p2p_freq_to_channel(p2p->cfg->country, force_freq,
 923                                         &p2p->op_reg_class, &p2p->op_channel) <
 924                     0) {
 925                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 926                                 "P2P: Unsupported frequency %u MHz",
 927                                 force_freq);
 928                         return -1;
 929                 }
 930                 p2p->channels.reg_classes = 1;
 931                 p2p->channels.reg_class[0].channels = 1;
 932                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
 933                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
 934         } else {
 935                 p2p->op_reg_class = p2p->cfg->op_reg_class;
 936                 p2p->op_channel = p2p->cfg->op_channel;
 937                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
 938                           sizeof(struct p2p_channels));
 939         }
 940         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 941                 "P2P: Own preference for operation channel: "
 942                 "Regulatory Class %u Channel %u%s",
 943                 p2p->op_reg_class, p2p->op_channel,
 944                 force_freq ? " (forced)" : "");
 945
 946         dev = p2p_get_device(p2p, peer_addr);
 947         if (dev == NULL) {
 948                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
 949                         "P2P: Cannot authorize unknown P2P Device " MACSTR,
 950                         MAC2STR(peer_addr));
 951                 return -1;
 952         }
 953
 954         dev->flags &= ~P2P_DEV_NOT_YET_READY;
 955         dev->flags &= ~P2P_DEV_USER_REJECTED;
 956         dev->go_neg_req_sent = 0;
 957         dev->go_state = UNKNOWN_GO;
 958         if (persistent_group)
 959                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
 960         else
 961                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_GROUP;
 962         p2p->go_intent = go_intent;
 963         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
 964
 965         dev->wps_method = wps_method;
 966         dev->status = P2P_SC_SUCCESS;
 967
 968         if (force_freq)
 969                 dev->flags |= P2P_DEV_FORCE_FREQ;
 970         else
 971                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
 972
 973         return 0;
 974 }
 975
 976
 977 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
 978                       struct p2p_device *dev, struct p2p_message *msg)
 979 {
 980         os_get_time(&dev->last_seen);
 981
 982         if (msg->pri_dev_type)
 983                 os_memcpy(dev->pri_dev_type, msg->pri_dev_type,
 984                           sizeof(dev->pri_dev_type));
 985         os_memcpy(dev->device_name, msg->device_name,
 986                   sizeof(dev->device_name));
 987         dev->config_methods = msg->config_methods ? msg->config_methods :
 988                 msg->wps_config_methods;
 989         if (msg->capability) {
 990                 dev->dev_capab = msg->capability[0];
 991                 dev->group_capab = msg->capability[1];
 992         }
 993         if (msg->listen_channel) {
 994                 int freq;
 995                 freq = p2p_channel_to_freq((char *) msg->listen_channel,
 996                                            msg->listen_channel[3],
 997                                            msg->listen_channel[4]);
 998                 if (freq < 0) {
 999                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1000                                 "P2P: Unknown peer Listen channel: "
1001                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1002                                 msg->listen_channel[0],
1003                                 msg->listen_channel[1],
1004                                 msg->listen_channel[2],
1005                                 msg->listen_channel[3],
1006                                 msg->listen_channel[4]);
1007                 } else {
1008                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Update "
1009                                 "peer " MACSTR " Listen channel: %u -> %u MHz",
1010                                 MAC2STR(dev->p2p_device_addr),
1011                                 dev->listen_freq, freq);
1012                         dev->listen_freq = freq;
1013                 }
1014         }
1015         if (msg->ext_listen_timing) {
1016                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
1017                 dev->ext_listen_interval =
1018                         WPA_GET_LE16(msg->ext_listen_timing + 2);
1019         }
1020
1021         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1022                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1023                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1024                         "P2P: Completed device entry based on data from "
1025                         "GO Negotiation Request");
1026         } else {
1027                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1028                         "P2P: Created device entry based on GO Neg Req: "
1029                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1030                         "listen_freq=%d",
1031                         MAC2STR(dev->p2p_device_addr), dev->dev_capab,
1032                         dev->group_capab, dev->device_name, dev->listen_freq);
1033         }
1034
1035         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1036
1037         if (dev->flags & P2P_DEV_USER_REJECTED) {
1038                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1039                         "P2P: Do not report rejected device");
1040                 return;
1041         }
1042
1043         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, dev->p2p_device_addr,
1044                             dev->pri_dev_type, dev->device_name,
1045                             dev->config_methods, dev->dev_capab,
1046                             dev->group_capab);
1047 }
1048
1049
1050 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1051 {
1052         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1053         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1054         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1055                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1056         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1057 }
1058
1059
1060 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1061 {
1062         p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1063         p2p_random(params->passphrase, 8);
1064         return 0;
1065 }
1066
1067
1068 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1069 {
1070         struct p2p_go_neg_results res;
1071         int go = peer->go_state == LOCAL_GO;
1072         struct p2p_channels intersection;
1073         int freqs;
1074         size_t i, j;
1075
1076         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1077                 "P2P: GO Negotiation with " MACSTR " completed (%s will be "
1078                 "GO)", MAC2STR(peer->p2p_device_addr),
1079                 go ? "local end" : "peer");
1080
1081         os_memset(&res, 0, sizeof(res));
1082         res.role_go = go;
1083         os_memcpy(res.peer_device_addr, peer->p2p_device_addr, ETH_ALEN);
1084         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1085         res.wps_method = peer->wps_method;
1086         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP)
1087                 res.persistent_group = 1;
1088
1089         if (go) {
1090                 /* Setup AP mode for WPS provisioning */
1091                 res.freq = p2p_channel_to_freq(p2p->cfg->country,
1092                                                p2p->op_reg_class,
1093                                                p2p->op_channel);
1094                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1095                 res.ssid_len = p2p->ssid_len;
1096                 p2p_random(res.passphrase, 8);
1097         } else {
1098                 res.freq = peer->oper_freq;
1099                 if (p2p->ssid_len) {
1100                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1101                         res.ssid_len = p2p->ssid_len;
1102                 }
1103         }
1104
1105         p2p_channels_intersect(&p2p->channels, &peer->channels,
1106                                &intersection);
1107         freqs = 0;
1108         for (i = 0; i < intersection.reg_classes; i++) {
1109                 struct p2p_reg_class *c = &intersection.reg_class[i];
1110                 if (freqs + 1 == P2P_MAX_CHANNELS)
1111                         break;
1112                 for (j = 0; j < c->channels; j++) {
1113                         int freq;
1114                         if (freqs + 1 == P2P_MAX_CHANNELS)
1115                                 break;
1116                         freq = p2p_channel_to_freq(peer->country, c->reg_class,
1117                                                    c->channel[j]);
1118                         if (freq < 0)
1119                                 continue;
1120                         res.freq_list[freqs++] = freq;
1121                 }
1122         }
1123
1124         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1125
1126         p2p_clear_timeout(p2p);
1127         peer->go_neg_req_sent = 0;
1128         peer->wps_method = WPS_NOT_READY;
1129
1130         p2p_set_state(p2p, P2P_PROVISIONING);
1131         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1132 }
1133
1134
1135 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1136                               const u8 *data, size_t len, int rx_freq)
1137 {
1138         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1139                 "P2P: RX P2P Public Action from " MACSTR, MAC2STR(sa));
1140         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1141
1142         if (len < 1)
1143                 return;
1144
1145         switch (data[0]) {
1146         case P2P_GO_NEG_REQ:
1147                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1148                 break;
1149         case P2P_GO_NEG_RESP:
1150                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1151                 break;
1152         case P2P_GO_NEG_CONF:
1153                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1154                 break;
1155         case P2P_INVITATION_REQ:
1156                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1157                                            rx_freq);
1158                 break;
1159         case P2P_INVITATION_RESP:
1160                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1161                 break;
1162         case P2P_PROV_DISC_REQ:
1163                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1164                 break;
1165         case P2P_PROV_DISC_RESP:
1166                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1167                 break;
1168         case P2P_DEV_DISC_REQ:
1169                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1170                 break;
1171         case P2P_DEV_DISC_RESP:
1172                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1173                 break;
1174         default:
1175                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1176                         "P2P: Unsupported P2P Public Action frame type %d",
1177                         data[0]);
1178                 break;
1179         }
1180 }
1181
1182
1183 void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1184                           const u8 *bssid, const u8 *data, size_t len,
1185                           int freq)
1186 {
1187         if (len < 1)
1188                 return;
1189
1190         switch (data[0]) {
1191         case WLAN_PA_VENDOR_SPECIFIC:
1192                 data++;
1193                 len--;
1194                 if (len < 3)
1195                         return;
1196                 if (WPA_GET_BE24(data) != OUI_WFA)
1197                         return;
1198
1199                 data += 3;
1200                 len -= 3;
1201                 if (len < 1)
1202                         return;
1203
1204                 if (*data != P2P_OUI_TYPE)
1205                         return;
1206
1207                 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1208                 break;
1209         case WLAN_PA_GAS_INITIAL_REQ:
1210                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1211                 break;
1212         case WLAN_PA_GAS_INITIAL_RESP:
1213                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1214                 break;
1215         case WLAN_PA_GAS_COMEBACK_REQ:
1216                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1217                 break;
1218         case WLAN_PA_GAS_COMEBACK_RESP:
1219                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1220                 break;
1221         }
1222 }
1223
1224
1225 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1226                    const u8 *bssid, u8 category,
1227                    const u8 *data, size_t len, int freq)
1228 {
1229         if (category == WLAN_ACTION_PUBLIC) {
1230                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1231                 return;
1232         }
1233
1234         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1235                 return;
1236
1237         if (len < 4)
1238                 return;
1239
1240         if (WPA_GET_BE24(data) != OUI_WFA)
1241                 return;
1242         data += 3;
1243         len -= 3;
1244
1245         if (*data != P2P_OUI_TYPE)
1246                 return;
1247         data++;
1248         len--;
1249
1250         /* P2P action frame */
1251         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1252                 "P2P: RX P2P Action from " MACSTR, MAC2STR(sa));
1253         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1254
1255         if (len < 1)
1256                 return;
1257         switch (data[0]) {
1258         case P2P_NOA:
1259                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1260                         "P2P: Received P2P Action - Notice of Absence");
1261                 /* TODO */
1262                 break;
1263         case P2P_PRESENCE_REQ:
1264                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1265                 break;
1266         case P2P_PRESENCE_RESP:
1267                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1268                 break;
1269         case P2P_GO_DISC_REQ:
1270                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1271                 break;
1272         default:
1273                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1274                         "P2P: Received P2P Action - unknown type %u", data[0]);
1275                 break;
1276         }
1277 }
1278
1279
1280 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1281 {
1282         struct p2p_data *p2p = eloop_ctx;
1283         if (p2p->go_neg_peer == NULL)
1284                 return;
1285         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1286         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1287         p2p_connect_send(p2p, p2p->go_neg_peer);
1288 }
1289
1290
1291 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1292 {
1293         struct p2p_data *p2p = eloop_ctx;
1294         if (p2p->invite_peer == NULL)
1295                 return;
1296         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1297         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1298 }
1299
1300
1301 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1302                                        const u8 *ie, size_t ie_len)
1303 {
1304         struct p2p_message msg;
1305         struct p2p_device *dev;
1306
1307         os_memset(&msg, 0, sizeof(msg));
1308         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1309         {
1310                 p2p_parse_free(&msg);
1311                 return; /* not a P2P probe */
1312         }
1313
1314         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1315             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1316             != 0) {
1317                 /* The Probe Request is not part of P2P Device Discovery. It is
1318                  * not known whether the source address of the frame is the P2P
1319                  * Device Address or P2P Interface Address. Do not add a new
1320                  * peer entry based on this frames.
1321                  */
1322                 p2p_parse_free(&msg);
1323                 return;
1324         }
1325
1326         dev = p2p_get_device(p2p, addr);
1327         if (dev) {
1328                 if (dev->country[0] == 0 && msg.listen_channel)
1329                         os_memcpy(dev->country, msg.listen_channel, 3);
1330                 p2p_parse_free(&msg);
1331                 return; /* already known */
1332         }
1333
1334         dev = p2p_create_device(p2p, addr);
1335         if (dev == NULL) {
1336                 p2p_parse_free(&msg);
1337                 return;
1338         }
1339
1340         os_get_time(&dev->last_seen);
1341         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1342
1343         if (msg.capability) {
1344                 dev->dev_capab = msg.capability[0];
1345                 dev->group_capab = msg.capability[1];
1346         }
1347
1348         if (msg.listen_channel) {
1349                 os_memcpy(dev->country, msg.listen_channel, 3);
1350                 dev->listen_freq = p2p_channel_to_freq(dev->country,
1351                                                        msg.listen_channel[3],
1352                                                        msg.listen_channel[4]);
1353         }
1354
1355         os_memcpy(dev->device_name, msg.device_name, sizeof(dev->device_name));
1356
1357         if (msg.wps_pri_dev_type)
1358                 os_memcpy(dev->pri_dev_type, msg.wps_pri_dev_type,
1359                           sizeof(dev->pri_dev_type));
1360
1361         p2p_parse_free(&msg);
1362
1363         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1364                 "P2P: Created device entry based on Probe Req: " MACSTR
1365                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1366                 MAC2STR(dev->p2p_device_addr), dev->dev_capab,
1367                 dev->group_capab, dev->device_name, dev->listen_freq);
1368 }
1369
1370
1371 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1372                                                 const u8 *addr,
1373                                                 struct p2p_message *msg)
1374 {
1375         struct p2p_device *dev;
1376
1377         dev = p2p_get_device(p2p, addr);
1378         if (dev) {
1379                 os_get_time(&dev->last_seen);
1380                 return dev; /* already known */
1381         }
1382
1383         dev = p2p_create_device(p2p, addr);
1384         if (dev == NULL)
1385                 return NULL;
1386
1387         p2p_add_dev_info(p2p, addr, dev, msg);
1388
1389         return dev;
1390 }
1391
1392
1393 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1394 {
1395         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1396                 return 1;
1397         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1398             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1399             WPA_GET_BE16(&req_dev_type[6]) == 0)
1400                 return 1; /* Category match with wildcard OUI/sub-category */
1401         return 0;
1402 }
1403
1404
1405 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1406                         size_t num_req_dev_type)
1407 {
1408         size_t i;
1409         for (i = 0; i < num_req_dev_type; i++) {
1410                 if (dev_type_match(dev_type, req_dev_type[i]))
1411                         return 1;
1412         }
1413         return 0;
1414 }
1415
1416
1417 /**
1418  * p2p_match_dev_type - Match local device type with requested type
1419  * @p2p: P2P module context from p2p_init()
1420  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1421  * Returns: 1 on match, 0 on mismatch
1422  *
1423  * This function can be used to match the Requested Device Type attribute in
1424  * WPS IE with the local device types for deciding whether to reply to a Probe
1425  * Request frame.
1426  */
1427 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1428 {
1429         struct wps_parse_attr attr;
1430         size_t i;
1431
1432         if (wps_parse_msg(wps, &attr))
1433                 return 1; /* assume no Requested Device Type attributes */
1434
1435         if (attr.num_req_dev_type == 0)
1436                 return 1; /* no Requested Device Type attributes -> match */
1437
1438         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1439                                 attr.num_req_dev_type))
1440                 return 1; /* Own Primary Device Type matches */
1441
1442         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1443                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1444                                         attr.req_dev_type,
1445                                         attr.num_req_dev_type))
1446                 return 1; /* Own Secondary Device Type matches */
1447
1448         /* No matching device type found */
1449         return 0;
1450 }
1451
1452
1453 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1454 {
1455         struct wpabuf *buf;
1456         u8 *len;
1457
1458         buf = wpabuf_alloc(1000);
1459         if (buf == NULL)
1460                 return NULL;
1461
1462         /* TODO: add more info into WPS IE; maybe get from WPS module? */
1463         p2p_build_wps_ie(p2p, buf, DEV_PW_DEFAULT, 1);
1464
1465         /* P2P IE */
1466         len = p2p_buf_add_ie_hdr(buf);
1467         p2p_buf_add_capability(buf, p2p->dev_capab, 0);
1468         if (p2p->ext_listen_interval)
1469                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1470                                               p2p->ext_listen_interval);
1471         p2p_buf_add_device_info(buf, p2p, NULL);
1472         p2p_buf_update_ie_hdr(buf, len);
1473
1474         return buf;
1475 }
1476
1477
1478 static void p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *ie,
1479                             size_t ie_len)
1480 {
1481         struct ieee802_11_elems elems;
1482         struct wpabuf *buf;
1483         struct ieee80211_mgmt *resp;
1484         struct wpabuf *wps;
1485         struct wpabuf *ies;
1486
1487         if (!p2p->in_listen || !p2p->drv_in_listen) {
1488                 /* not in Listen state - ignore Probe Request */
1489                 return;
1490         }
1491
1492         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1493             ParseFailed) {
1494                 /* Ignore invalid Probe Request frames */
1495                 return;
1496         }
1497
1498         if (elems.p2p == NULL) {
1499                 /* not a P2P probe - ignore it */
1500                 return;
1501         }
1502
1503         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
1504             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
1505             0) {
1506                 /* not using P2P Wildcard SSID - ignore */
1507                 return;
1508         }
1509
1510         /* Check Requested Device Type match */
1511         wps = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
1512         if (wps && !p2p_match_dev_type(p2p, wps)) {
1513                 wpabuf_free(wps);
1514                 /* No match with Requested Device Type */
1515                 return;
1516         }
1517         wpabuf_free(wps);
1518
1519         if (!p2p->cfg->send_probe_resp)
1520                 return; /* Response generated elsewhere */
1521
1522         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1523                 "P2P: Reply to P2P Probe Request in Listen state");
1524
1525         /*
1526          * We do not really have a specific BSS that this frame is advertising,
1527          * so build a frame that has some information in valid format. This is
1528          * really only used for discovery purposes, not to learn exact BSS
1529          * parameters.
1530          */
1531         ies = p2p_build_probe_resp_ies(p2p);
1532         if (ies == NULL)
1533                 return;
1534
1535         buf = wpabuf_alloc(200 + wpabuf_len(ies));
1536         if (buf == NULL) {
1537                 wpabuf_free(ies);
1538                 return;
1539         }
1540
1541         resp = NULL;
1542         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
1543
1544         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
1545                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
1546         os_memcpy(resp->da, addr, ETH_ALEN);
1547         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
1548         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
1549         resp->u.probe_resp.beacon_int = host_to_le16(100);
1550         /* hardware or low-level driver will setup seq_ctrl and timestamp */
1551         resp->u.probe_resp.capab_info =
1552                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
1553                              WLAN_CAPABILITY_PRIVACY |
1554                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
1555
1556         wpabuf_put_u8(buf, WLAN_EID_SSID);
1557         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
1558         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1559
1560         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
1561         wpabuf_put_u8(buf, 8);
1562         wpabuf_put_u8(buf, (60 / 5) | 0x80);
1563         wpabuf_put_u8(buf, 90 / 5);
1564         wpabuf_put_u8(buf, (120 / 5) | 0x80);
1565         wpabuf_put_u8(buf, 180 / 5);
1566         wpabuf_put_u8(buf, (240 / 5) | 0x80);
1567         wpabuf_put_u8(buf, 360 / 5);
1568         wpabuf_put_u8(buf, 480 / 5);
1569         wpabuf_put_u8(buf, 540 / 5);
1570
1571         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
1572         wpabuf_put_u8(buf, 1);
1573         wpabuf_put_u8(buf, p2p->cfg->channel);
1574
1575         wpabuf_put_buf(buf, ies);
1576         wpabuf_free(ies);
1577
1578         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
1579
1580         wpabuf_free(buf);
1581 }
1582
1583
1584 int p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *ie,
1585                      size_t ie_len)
1586 {
1587         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
1588
1589         p2p_reply_probe(p2p, addr, ie, ie_len);
1590
1591         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
1592             p2p->go_neg_peer &&
1593             os_memcmp(addr, p2p->go_neg_peer->p2p_device_addr, ETH_ALEN) == 0)
1594         {
1595                 /* Received a Probe Request from GO Negotiation peer */
1596                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1597                         "P2P: Found GO Negotiation peer - try to start GO "
1598                         "negotiation from timeout");
1599                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
1600                 return 1;
1601         }
1602
1603         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
1604             p2p->invite_peer &&
1605             os_memcmp(addr, p2p->invite_peer->p2p_device_addr, ETH_ALEN) == 0)
1606         {
1607                 /* Received a Probe Request from Invite peer */
1608                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1609                         "P2P: Found Invite peer - try to start Invite from "
1610                         "timeout");
1611                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
1612                 return 1;
1613         }
1614
1615         return 0;
1616 }
1617
1618
1619 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
1620                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
1621 {
1622         struct wpabuf *tmp;
1623         u8 *lpos;
1624         size_t tmplen;
1625         int res;
1626         u8 group_capab;
1627
1628         if (p2p_ie == NULL)
1629                 return 0; /* WLAN AP is not a P2P manager */
1630
1631         /*
1632          * (Re)Association Request - P2P IE
1633          * P2P Capability attribute (shall be present)
1634          * P2P Interface attribute (present if concurrent device and
1635          *      P2P Management is enabled)
1636          */
1637         tmp = wpabuf_alloc(200);
1638         if (tmp == NULL)
1639                 return -1;
1640
1641         lpos = p2p_buf_add_ie_hdr(tmp);
1642         group_capab = 0;
1643         if (p2p->num_groups > 0) {
1644                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
1645                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
1646                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
1647                     p2p->cross_connect)
1648                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
1649         }
1650         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
1651         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
1652             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
1653                 p2p_buf_add_p2p_interface(tmp, p2p);
1654         p2p_buf_update_ie_hdr(tmp, lpos);
1655
1656         tmplen = wpabuf_len(tmp);
1657         if (tmplen > len)
1658                 res = -1;
1659         else {
1660                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
1661                 res = tmplen;
1662         }
1663         wpabuf_free(tmp);
1664
1665         return res;
1666 }
1667
1668
1669 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
1670                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
1671 {
1672         struct wpabuf *tmp;
1673         u8 *lpos;
1674         struct p2p_device *peer;
1675         size_t tmplen;
1676         int res;
1677
1678         if (!p2p_group)
1679                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
1680
1681         /*
1682          * (Re)Association Request - P2P IE
1683          * P2P Capability attribute (shall be present)
1684          * Extended Listen Timing (may be present)
1685          * P2P Device Info attribute (shall be present)
1686          */
1687         tmp = wpabuf_alloc(200);
1688         if (tmp == NULL)
1689                 return -1;
1690
1691         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
1692
1693         lpos = p2p_buf_add_ie_hdr(tmp);
1694         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
1695         if (p2p->ext_listen_interval)
1696                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
1697                                               p2p->ext_listen_interval);
1698         p2p_buf_add_device_info(tmp, p2p, peer);
1699         p2p_buf_update_ie_hdr(tmp, lpos);
1700
1701         tmplen = wpabuf_len(tmp);
1702         if (tmplen > len)
1703                 res = -1;
1704         else {
1705                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
1706                 res = tmplen;
1707         }
1708         wpabuf_free(tmp);
1709
1710         return res;
1711 }
1712
1713
1714 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
1715 {
1716         struct wpabuf *p2p_ie;
1717         int ret;
1718
1719         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
1720         if (p2p_ie == NULL)
1721                 return 0;
1722
1723         ret = p2p_attr_text(p2p_ie, buf, end);
1724         wpabuf_free(p2p_ie);
1725         return ret;
1726 }
1727
1728
1729 static void p2p_clear_go_neg(struct p2p_data *p2p)
1730 {
1731         p2p->go_neg_peer = NULL;
1732         p2p_clear_timeout(p2p);
1733         p2p_set_state(p2p, P2P_IDLE);
1734 }
1735
1736
1737 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
1738 {
1739         if (p2p->go_neg_peer == NULL) {
1740                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1741                         "P2P: No pending Group Formation - "
1742                         "ignore WPS registration success notification");
1743                 return; /* No pending Group Formation */
1744         }
1745
1746         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
1747             0) {
1748                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1749                         "P2P: Ignore WPS registration success notification "
1750                         "for " MACSTR " (GO Negotiation peer " MACSTR ")",
1751                         MAC2STR(mac_addr),
1752                         MAC2STR(p2p->go_neg_peer->intended_addr));
1753                 return; /* Ignore unexpected peer address */
1754         }
1755
1756         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1757                 "P2P: Group Formation completed successfully with " MACSTR,
1758                 MAC2STR(mac_addr));
1759
1760         p2p_clear_go_neg(p2p);
1761 }
1762
1763
1764 void p2p_group_formation_failed(struct p2p_data *p2p)
1765 {
1766         if (p2p->go_neg_peer == NULL) {
1767                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1768                         "P2P: No pending Group Formation - "
1769                         "ignore group formation failure notification");
1770                 return; /* No pending Group Formation */
1771         }
1772
1773         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1774                 "P2P: Group Formation failed with " MACSTR,
1775                 MAC2STR(p2p->go_neg_peer->intended_addr));
1776
1777         p2p_clear_go_neg(p2p);
1778 }
1779
1780
1781 struct p2p_data * p2p_init(const struct p2p_config *cfg)
1782 {
1783         struct p2p_data *p2p;
1784
1785         if (cfg->max_peers < 1)
1786                 return NULL;
1787
1788         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
1789         if (p2p == NULL)
1790                 return NULL;
1791         p2p->cfg = (struct p2p_config *) (p2p + 1);
1792         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
1793         if (cfg->dev_name)
1794                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
1795
1796         p2p->min_disc_int = 1;
1797         p2p->max_disc_int = 3;
1798
1799         os_get_random(&p2p->next_tie_breaker, 1);
1800         p2p->next_tie_breaker &= 0x01;
1801         if (cfg->sd_request)
1802                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
1803         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
1804         if (cfg->concurrent_operations)
1805                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
1806         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
1807
1808         dl_list_init(&p2p->devices);
1809
1810         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
1811                                p2p_expiration_timeout, p2p, NULL);
1812
1813         return p2p;
1814 }
1815
1816
1817 void p2p_deinit(struct p2p_data *p2p)
1818 {
1819         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
1820         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
1821         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1822         p2p_flush(p2p);
1823         os_free(p2p->cfg->dev_name);
1824         os_free(p2p->groups);
1825         wpabuf_free(p2p->sd_resp);
1826         os_free(p2p);
1827 }
1828
1829
1830 void p2p_flush(struct p2p_data *p2p)
1831 {
1832         struct p2p_device *dev, *prev;
1833         p2p_clear_timeout(p2p);
1834         p2p_set_state(p2p, P2P_IDLE);
1835         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1836         p2p->go_neg_peer = NULL;
1837         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1838         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
1839                               list) {
1840                 dl_list_del(&dev->list);
1841                 p2p_device_free(p2p, dev);
1842         }
1843         p2p_free_sd_queries(p2p);
1844 }
1845
1846
1847 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
1848 {
1849         os_free(p2p->cfg->dev_name);
1850         if (dev_name) {
1851                 p2p->cfg->dev_name = os_strdup(dev_name);
1852                 if (p2p->cfg->dev_name == NULL)
1853                         return -1;
1854         } else
1855                 p2p->cfg->dev_name = NULL;
1856         return 0;
1857 }
1858
1859
1860 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
1861 {
1862         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
1863         return 0;
1864 }
1865
1866
1867 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
1868                           size_t num_dev_types)
1869 {
1870         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
1871                 num_dev_types = P2P_SEC_DEVICE_TYPES;
1872         p2p->cfg->num_sec_dev_types = num_dev_types;
1873         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
1874         return 0;
1875 }
1876
1877
1878 int p2p_set_country(struct p2p_data *p2p, const char *country)
1879 {
1880         os_memcpy(p2p->cfg->country, country, 3);
1881         return 0;
1882 }
1883
1884
1885 void p2p_continue_find(struct p2p_data *p2p)
1886 {
1887         struct p2p_device *dev;
1888         p2p_set_state(p2p, P2P_SEARCH);
1889         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
1890                 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
1891                         if (p2p_start_sd(p2p, dev) == 0)
1892                                 return;
1893                         else
1894                                 break;
1895                 } else if (dev->req_config_methods) {
1896                         if (p2p_send_prov_disc_req(p2p, dev, 0) == 0)
1897                                 return;
1898                 }
1899         }
1900
1901         p2p_listen_in_find(p2p);
1902 }
1903
1904
1905 static void p2p_sd_cb(struct p2p_data *p2p, int success)
1906 {
1907         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1908                 "P2P: Service Discovery Query TX callback: success=%d",
1909                 success);
1910         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
1911
1912         if (!success) {
1913                 if (p2p->sd_peer) {
1914                         p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
1915                         p2p->sd_peer = NULL;
1916                 }
1917                 p2p_continue_find(p2p);
1918                 return;
1919         }
1920
1921         if (p2p->sd_peer == NULL) {
1922                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1923                         "P2P: No SD peer entry known");
1924                 p2p_continue_find(p2p);
1925                 return;
1926         }
1927
1928         /* Wait for response from the peer */
1929         p2p_set_state(p2p, P2P_SD_DURING_FIND);
1930         p2p_set_timeout(p2p, 0, 200000);
1931 }
1932
1933
1934 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
1935 {
1936         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1937                 "P2P: Provision Discovery Request TX callback: success=%d",
1938                 success);
1939         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
1940
1941         if (!success) {
1942                 if (p2p->state != P2P_IDLE)
1943                         p2p_continue_find(p2p);
1944                 return;
1945         }
1946
1947         /* Wait for response from the peer */
1948         if (p2p->state == P2P_SEARCH)
1949                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
1950         p2p_set_timeout(p2p, 0, 200000);
1951 }
1952
1953
1954 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
1955                          int level, const u8 *ies, size_t ies_len)
1956 {
1957         p2p_add_device(p2p, bssid, freq, level, ies, ies_len);
1958
1959         if (p2p->go_neg_peer && p2p->state == P2P_SEARCH &&
1960             os_memcmp(p2p->go_neg_peer->p2p_device_addr, bssid, ETH_ALEN) == 0)
1961         {
1962                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
1963                         "P2P: Found GO Negotiation peer - try to start GO "
1964                         "negotiation");
1965                 p2p_connect_send(p2p, p2p->go_neg_peer);
1966                 return 1;
1967         }
1968
1969         return 0;
1970 }
1971
1972
1973 void p2p_scan_res_handled(struct p2p_data *p2p)
1974 {
1975         if (!p2p->p2p_scan_running) {
1976                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: p2p_scan was not "
1977                         "running, but scan results received");
1978         }
1979         p2p->p2p_scan_running = 0;
1980         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1981
1982         if (p2p_run_after_scan(p2p))
1983                 return;
1984         if (p2p->state == P2P_SEARCH)
1985                 p2p_continue_find(p2p);
1986 }
1987
1988
1989 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies)
1990 {
1991         u8 *len = p2p_buf_add_ie_hdr(ies);
1992         p2p_buf_add_capability(ies, p2p->dev_capab, 0);
1993         if (p2p->cfg->reg_class && p2p->cfg->channel)
1994                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
1995                                            p2p->cfg->reg_class,
1996                                            p2p->cfg->channel);
1997         if (p2p->ext_listen_interval)
1998                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
1999                                               p2p->ext_listen_interval);
2000         /* TODO: p2p_buf_add_operating_channel() if GO */
2001         p2p_buf_update_ie_hdr(ies, len);
2002 }
2003
2004
2005 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2006 {
2007         return p2p_attr_text(p2p_ie, buf, end);
2008 }
2009
2010
2011 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2012 {
2013         struct p2p_device *dev = p2p->go_neg_peer;
2014
2015         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2016                 "P2P: GO Negotiation Request TX callback: success=%d",
2017                 success);
2018
2019         if (dev == NULL) {
2020                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2021                         "P2P: No pending GO Negotiation");
2022                 return;
2023         }
2024
2025         if (success) {
2026                 dev->go_neg_req_sent++;
2027                 if (dev->flags & P2P_DEV_USER_REJECTED) {
2028                         p2p_set_state(p2p, P2P_IDLE);
2029                         return;
2030                 }
2031         }
2032
2033         if (!success &&
2034             (dev->dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2035             !is_zero_ether_addr(dev->member_in_go_dev)) {
2036                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2037                         "P2P: Peer " MACSTR " did not acknowledge request - "
2038                         "try to use device discoverability through its GO",
2039                         MAC2STR(dev->p2p_device_addr));
2040                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2041                 p2p_send_dev_disc_req(p2p, dev);
2042                 return;
2043         }
2044
2045         /*
2046          * Use P2P find, if needed, to find the other device from its listen
2047          * channel.
2048          */
2049         p2p_set_state(p2p, P2P_CONNECT);
2050         p2p_set_timeout(p2p, 0, 100000);
2051 }
2052
2053
2054 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2055 {
2056         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2057                 "P2P: GO Negotiation Response TX callback: success=%d",
2058                 success);
2059         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2060                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2061                         "P2P: Ignore TX callback event - GO Negotiation is "
2062                         "not running anymore");
2063                 return;
2064         }
2065         p2p_set_state(p2p, P2P_CONNECT);
2066         p2p_set_timeout(p2p, 0, 100000);
2067 }
2068
2069
2070 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success)
2071 {
2072         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2073                 "P2P: GO Negotiation Response (failure) TX callback: "
2074                 "success=%d", success);
2075         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2076                 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2077                                   p2p->go_neg_peer->status);
2078         }
2079 }
2080
2081
2082 static void p2p_go_neg_conf_cb(struct p2p_data *p2p, int success)
2083 {
2084         struct p2p_device *dev;
2085
2086         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2087                 "P2P: GO Negotiation Confirm TX callback: success=%d",
2088                 success);
2089         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2090         if (!success) {
2091                 /*
2092                  * It looks like the TX status for GO Negotiation Confirm is
2093                  * often showing failure even when the peer has actually
2094                  * received the frame. Since the peer may change channels
2095                  * immediately after having received the frame, we may not see
2096                  * an Ack for retries, so just dropping a single frame may
2097                  * trigger this. To allow the group formation to succeed if the
2098                  * peer did indeed receive the frame, continue regardless of
2099                  * the TX status.
2100                  */
2101                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2102                         "P2P: Assume GO Negotiation Confirm TX was actually "
2103                         "received by the peer even though Ack was not "
2104                         "reported");
2105         }
2106
2107         dev = p2p->go_neg_peer;
2108         if (dev == NULL)
2109                 return;
2110
2111         p2p_go_complete(p2p, dev);
2112 }
2113
2114
2115 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
2116                         const u8 *src, const u8 *bssid, int success)
2117 {
2118         enum p2p_pending_action_state state;
2119
2120         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2121                 "P2P: Action frame TX callback (state=%d freq=%u dst=" MACSTR
2122                 " src=" MACSTR " bssid=" MACSTR " success=%d",
2123                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
2124                 MAC2STR(bssid), success);
2125         state = p2p->pending_action_state;
2126         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2127         switch (state) {
2128         case P2P_NO_PENDING_ACTION:
2129                 break;
2130         case P2P_PENDING_GO_NEG_REQUEST:
2131                 p2p_go_neg_req_cb(p2p, success);
2132                 break;
2133         case P2P_PENDING_GO_NEG_RESPONSE:
2134                 p2p_go_neg_resp_cb(p2p, success);
2135                 break;
2136         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
2137                 p2p_go_neg_resp_failure_cb(p2p, success);
2138                 break;
2139         case P2P_PENDING_GO_NEG_CONFIRM:
2140                 p2p_go_neg_conf_cb(p2p, success);
2141                 break;
2142         case P2P_PENDING_SD:
2143                 p2p_sd_cb(p2p, success);
2144                 break;
2145         case P2P_PENDING_PD:
2146                 p2p_prov_disc_cb(p2p, success);
2147                 break;
2148         case P2P_PENDING_INVITATION_REQUEST:
2149                 p2p_invitation_req_cb(p2p, success);
2150                 break;
2151         case P2P_PENDING_INVITATION_RESPONSE:
2152                 p2p_invitation_resp_cb(p2p, success);
2153                 break;
2154         case P2P_PENDING_DEV_DISC_REQUEST:
2155                 p2p_dev_disc_req_cb(p2p, success);
2156                 break;
2157         case P2P_PENDING_DEV_DISC_RESPONSE:
2158                 p2p_dev_disc_resp_cb(p2p, success);
2159                 break;
2160         case P2P_PENDING_GO_DISC_REQ:
2161                 p2p_go_disc_req_cb(p2p, success);
2162                 break;
2163         }
2164 }
2165
2166
2167 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
2168                    unsigned int duration)
2169 {
2170         if (freq == p2p->pending_client_disc_freq) {
2171                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2172                         "P2P: Client discoverability remain-awake completed");
2173                 p2p->pending_client_disc_freq = 0;
2174                 return;
2175         }
2176
2177         if (freq != p2p->pending_listen_freq) {
2178                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2179                         "P2P: Unexpected listen callback for freq=%u "
2180                         "duration=%u (pending_listen_freq=%u)",
2181                         freq, duration, p2p->pending_listen_freq);
2182                 return;
2183         }
2184
2185         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2186                 "P2P: Starting Listen timeout(%u,%u) on freq=%u based on "
2187                 "callback",
2188                 p2p->pending_listen_sec, p2p->pending_listen_usec,
2189                 p2p->pending_listen_freq);
2190         p2p->in_listen = 1;
2191         p2p->drv_in_listen = 1;
2192         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
2193                 /*
2194                  * Add 20 msec extra wait to avoid race condition with driver
2195                  * remain-on-channel end event, i.e., give driver more time to
2196                  * complete the operation before our timeout expires.
2197                  */
2198                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
2199                                 p2p->pending_listen_usec + 20000);
2200         }
2201
2202         p2p->pending_listen_freq = 0;
2203 }
2204
2205
2206 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
2207 {
2208         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver ended Listen "
2209                 "state (freq=%u)", freq);
2210         p2p->drv_in_listen = 0;
2211         if (p2p->in_listen)
2212                 return 0; /* Internal timeout will trigger the next step */
2213
2214         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
2215                 p2p_set_state(p2p, P2P_CONNECT);
2216                 p2p_connect_send(p2p, p2p->go_neg_peer);
2217                 return 1;
2218         } else if (p2p->state == P2P_SEARCH) {
2219                 p2p_search(p2p);
2220                 return 1;
2221         }
2222
2223         return 0;
2224 }
2225
2226
2227 static void p2p_timeout_connect(struct p2p_data *p2p)
2228 {
2229         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2230         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
2231         p2p_listen_in_find(p2p);
2232 }
2233
2234
2235 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
2236 {
2237         if (p2p->go_neg_peer) {
2238                 if (p2p->drv_in_listen) {
2239                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Driver is "
2240                                 "still in Listen state; wait for it to "
2241                                 "complete");
2242                         return;
2243                 }
2244                 p2p_set_state(p2p, P2P_CONNECT);
2245                 p2p_connect_send(p2p, p2p->go_neg_peer);
2246         } else
2247                 p2p_set_state(p2p, P2P_IDLE);
2248 }
2249
2250
2251 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
2252 {
2253         /*
2254          * TODO: could remain constantly in Listen state for some time if there
2255          * are no other concurrent uses for the radio. For now, go to listen
2256          * state once per second to give other uses a chance to use the radio.
2257          */
2258         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
2259         p2p_set_timeout(p2p, 1, 0);
2260 }
2261
2262
2263 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
2264 {
2265         struct p2p_device *dev = p2p->go_neg_peer;
2266
2267         if (dev == NULL) {
2268                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2269                         "P2P: Unknown GO Neg peer - stop GO Neg wait");
2270                 return;
2271         }
2272
2273         dev->wait_count++;
2274         if (dev->wait_count >= 120) {
2275                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2276                         "P2P: Timeout on waiting peer to become ready for GO "
2277                         "Negotiation");
2278                 p2p_go_neg_failed(p2p, dev, -1);
2279                 return;
2280         }
2281
2282         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2283                 "P2P: Go to Listen state while waiting for the peer to become "
2284                 "ready for GO Negotiation");
2285         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
2286         p2p_listen_in_find(p2p);
2287 }
2288
2289
2290 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
2291 {
2292         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2293                 "P2P: Service Discovery Query timeout");
2294         if (p2p->sd_peer) {
2295                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2296                 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2297                 p2p->sd_peer = NULL;
2298         }
2299         p2p_continue_find(p2p);
2300 }
2301
2302
2303 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
2304 {
2305         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2306                 "P2P: Provision Discovery Request timeout");
2307         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2308         p2p_continue_find(p2p);
2309 }
2310
2311
2312 static void p2p_timeout_invite(struct p2p_data *p2p)
2313 {
2314         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2315         p2p_set_state(p2p, P2P_INVITE_LISTEN);
2316         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
2317                 /*
2318                  * Better remain on operating channel instead of listen channel
2319                  * when running a group.
2320                  */
2321                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Inviting in "
2322                         "active GO role - wait on operating channel");
2323                 p2p_set_timeout(p2p, 0, 100000);
2324                 return;
2325         }
2326         p2p_listen_in_find(p2p);
2327 }
2328
2329
2330 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
2331 {
2332         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
2333                 p2p_set_state(p2p, P2P_INVITE);
2334                 p2p_invite_send(p2p, p2p->invite_peer,
2335                                 p2p->invite_go_dev_addr);
2336         } else {
2337                 if (p2p->invite_peer) {
2338                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2339                                 "P2P: Invitation Request retry limit reached");
2340                         if (p2p->cfg->invitation_result)
2341                                 p2p->cfg->invitation_result(
2342                                         p2p->cfg->cb_ctx, -1, NULL);
2343                 }
2344                 p2p_set_state(p2p, P2P_IDLE);
2345         }
2346 }
2347
2348
2349 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
2350 {
2351         struct p2p_data *p2p = eloop_ctx;
2352
2353         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Timeout (state=%s)",
2354                 p2p_state_txt(p2p->state));
2355
2356         p2p->in_listen = 0;
2357
2358         switch (p2p->state) {
2359         case P2P_IDLE:
2360                 break;
2361         case P2P_SEARCH:
2362                 p2p_search(p2p);
2363                 break;
2364         case P2P_CONNECT:
2365                 p2p_timeout_connect(p2p);
2366                 break;
2367         case P2P_CONNECT_LISTEN:
2368                 p2p_timeout_connect_listen(p2p);
2369                 break;
2370         case P2P_GO_NEG:
2371                 break;
2372         case P2P_LISTEN_ONLY:
2373                 if (p2p->ext_listen_only) {
2374                         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2375                                 "P2P: Extended Listen Timing - Listen State "
2376                                 "completed");
2377                         p2p->ext_listen_only = 0;
2378                         p2p_set_state(p2p, P2P_IDLE);
2379                 }
2380                 break;
2381         case P2P_WAIT_PEER_CONNECT:
2382                 p2p_timeout_wait_peer_connect(p2p);
2383                 break;
2384         case P2P_WAIT_PEER_IDLE:
2385                 p2p_timeout_wait_peer_idle(p2p);
2386                 break;
2387         case P2P_SD_DURING_FIND:
2388                 p2p_timeout_sd_during_find(p2p);
2389                 break;
2390         case P2P_PROVISIONING:
2391                 break;
2392         case P2P_PD_DURING_FIND:
2393                 p2p_timeout_prov_disc_during_find(p2p);
2394                 break;
2395         case P2P_INVITE:
2396                 p2p_timeout_invite(p2p);
2397                 break;
2398         case P2P_INVITE_LISTEN:
2399                 p2p_timeout_invite_listen(p2p);
2400                 break;
2401         }
2402 }
2403
2404
2405 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
2406 {
2407         struct p2p_device *dev;
2408
2409         dev = p2p_get_device(p2p, peer_addr);
2410         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Local request to reject "
2411                 "connection attempts by peer " MACSTR, MAC2STR(peer_addr));
2412         if (dev == NULL) {
2413                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Peer " MACSTR
2414                         " unknown", MAC2STR(peer_addr));
2415                 return -1;
2416         }
2417         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
2418         dev->flags |= P2P_DEV_USER_REJECTED;
2419         return 0;
2420 }
2421
2422
2423 static const char * p2p_wps_method_text(enum p2p_wps_method method)
2424 {
2425         switch (method) {
2426         case WPS_NOT_READY:
2427                 return "not-ready";
2428         case WPS_PIN_LABEL:
2429                 return "Label";
2430         case WPS_PIN_DISPLAY:
2431                 return "Display";
2432         case WPS_PIN_KEYPAD:
2433                 return "Keypad";
2434         case WPS_PBC:
2435                 return "PBC";
2436         }
2437
2438         return "??";
2439 }
2440
2441
2442 static const char * p2p_go_state_text(enum p2p_go_state go_state)
2443 {
2444         switch (go_state) {
2445         case UNKNOWN_GO:
2446                 return "unknown";
2447         case LOCAL_GO:
2448                 return "local";
2449         case  REMOTE_GO:
2450                 return "remote";
2451         }
2452
2453         return "??";
2454 }
2455
2456
2457 int p2p_get_peer_info(struct p2p_data *p2p, const u8 *addr, int next,
2458                       char *buf, size_t buflen)
2459 {
2460         struct p2p_device *dev;
2461         int res;
2462         char *pos, *end;
2463         struct os_time now;
2464         char devtype[WPS_DEV_TYPE_BUFSIZE];
2465
2466         if (addr)
2467                 dev = p2p_get_device(p2p, addr);
2468         else
2469                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
2470
2471         if (dev && next) {
2472                 dev = dl_list_first(&dev->list, struct p2p_device, list);
2473                 if (&dev->list == &p2p->devices)
2474                         dev = NULL;
2475         }
2476
2477         if (dev == NULL)
2478                 return -1;
2479
2480         pos = buf;
2481         end = buf + buflen;
2482
2483         res = os_snprintf(pos, end - pos, MACSTR "\n",
2484                           MAC2STR(dev->p2p_device_addr));
2485         if (res < 0 || res >= end - pos)
2486                 return pos - buf;
2487         pos += res;
2488
2489         os_get_time(&now);
2490         res = os_snprintf(pos, end - pos,
2491                           "age=%d\n"
2492                           "listen_freq=%d\n"
2493                           "level=%d\n"
2494                           "wps_method=%s\n"
2495                           "interface_addr=" MACSTR "\n"
2496                           "member_in_go_dev=" MACSTR "\n"
2497                           "member_in_go_iface=" MACSTR "\n"
2498                           "pri_dev_type=%s\n"
2499                           "device_name=%s\n"
2500                           "config_methods=0x%x\n"
2501                           "dev_capab=0x%x\n"
2502                           "group_capab=0x%x\n"
2503                           "go_neg_req_sent=%d\n"
2504                           "go_state=%s\n"
2505                           "dialog_token=%u\n"
2506                           "intended_addr=" MACSTR "\n"
2507                           "country=%c%c\n"
2508                           "oper_freq=%d\n"
2509                           "req_config_methods=0x%x\n"
2510                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
2511                           "status=%d\n"
2512                           "wait_count=%u\n"
2513                           "invitation_reqs=%u\n",
2514                           (int) (now.sec - dev->last_seen.sec),
2515                           dev->listen_freq,
2516                           dev->level,
2517                           p2p_wps_method_text(dev->wps_method),
2518                           MAC2STR(dev->interface_addr),
2519                           MAC2STR(dev->member_in_go_dev),
2520                           MAC2STR(dev->member_in_go_iface),
2521                           wps_dev_type_bin2str(dev->pri_dev_type,
2522                                                devtype, sizeof(devtype)),
2523                           dev->device_name,
2524                           dev->config_methods,
2525                           dev->dev_capab,
2526                           dev->group_capab,
2527                           dev->go_neg_req_sent,
2528                           p2p_go_state_text(dev->go_state),
2529                           dev->dialog_token,
2530                           MAC2STR(dev->intended_addr),
2531                           dev->country[0] ? dev->country[0] : '_',
2532                           dev->country[1] ? dev->country[1] : '_',
2533                           dev->oper_freq,
2534                           dev->req_config_methods,
2535                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
2536                           "[PROBE_REQ_ONLY]" : "",
2537                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
2538                           dev->flags & P2P_DEV_NOT_YET_READY ?
2539                           "[NOT_YET_READY]" : "",
2540                           dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
2541                           dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
2542                           "",
2543                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
2544                           "[PD_PEER_DISPLAY]" : "",
2545                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
2546                           "[PD_PEER_KEYPAD]" : "",
2547                           dev->flags & P2P_DEV_USER_REJECTED ?
2548                           "[USER_REJECTED]" : "",
2549                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
2550                           "[PEER_WAITING_RESPONSE]" : "",
2551                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
2552                           "[PREFER_PERSISTENT_GROUP]" : "",
2553                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
2554                           "[WAIT_GO_NEG_RESPONSE]" : "",
2555                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
2556                           "[WAIT_GO_NEG_CONFIRM]" : "",
2557                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
2558                           "[GROUP_CLIENT_ONLY]" : "",
2559                           dev->flags & P2P_DEV_FORCE_FREQ ?
2560                           "[FORCE_FREQ" : "",
2561                           dev->status,
2562                           dev->wait_count,
2563                           dev->invitation_reqs);
2564         if (res < 0 || res >= end - pos)
2565                 return pos - buf;
2566         pos += res;
2567
2568         if (dev->ext_listen_period) {
2569                 res = os_snprintf(pos, end - pos,
2570                                   "ext_listen_period=%u\n"
2571                                   "ext_listen_interval=%u\n",
2572                                   dev->ext_listen_period,
2573                                   dev->ext_listen_interval);
2574                 if (res < 0 || res >= end - pos)
2575                         return pos - buf;
2576                 pos += res;
2577         }
2578
2579         if (dev->oper_ssid_len) {
2580                 res = os_snprintf(pos, end - pos,
2581                                   "oper_ssid=%s\n",
2582                                   wpa_ssid_txt(dev->oper_ssid,
2583                                                dev->oper_ssid_len));
2584                 if (res < 0 || res >= end - pos)
2585                         return pos - buf;
2586                 pos += res;
2587         }
2588
2589         return pos - buf;
2590 }
2591
2592
2593 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
2594 {
2595         if (enabled) {
2596                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
2597                         "discoverability enabled");
2598                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2599         } else {
2600                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Client "
2601                         "discoverability disabled");
2602                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2603         }
2604 }
2605
2606
2607 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
2608                                               u32 duration2, u32 interval2)
2609 {
2610         struct wpabuf *req;
2611         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
2612         u8 *len;
2613
2614         req = wpabuf_alloc(100);
2615         if (req == NULL)
2616                 return NULL;
2617
2618         if (duration1 || interval1) {
2619                 os_memset(&desc1, 0, sizeof(desc1));
2620                 desc1.count_type = 1;
2621                 desc1.duration = duration1;
2622                 desc1.interval = interval1;
2623                 ptr1 = &desc1;
2624
2625                 if (duration2 || interval2) {
2626                         os_memset(&desc2, 0, sizeof(desc2));
2627                         desc2.count_type = 2;
2628                         desc2.duration = duration2;
2629                         desc2.interval = interval2;
2630                         ptr2 = &desc2;
2631                 }
2632         }
2633
2634         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
2635         len = p2p_buf_add_ie_hdr(req);
2636         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
2637         p2p_buf_update_ie_hdr(req, len);
2638
2639         return req;
2640 }
2641
2642
2643 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
2644                      const u8 *own_interface_addr, unsigned int freq,
2645                      u32 duration1, u32 interval1, u32 duration2,
2646                      u32 interval2)
2647 {
2648         struct wpabuf *req;
2649
2650         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Send Presence Request to "
2651                 "GO " MACSTR " (own interface " MACSTR ") freq=%u dur1=%u "
2652                 "int1=%u dur2=%u int2=%u",
2653                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
2654                 freq, duration1, interval1, duration2, interval2);
2655
2656         req = p2p_build_presence_req(duration1, interval1, duration2,
2657                                      interval2);
2658         if (req == NULL)
2659                 return -1;
2660
2661         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2662         if (p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, go_interface_addr,
2663                                   own_interface_addr,
2664                                   go_interface_addr,
2665                                   wpabuf_head(req), wpabuf_len(req), 200) < 0)
2666         {
2667                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2668                         "P2P: Failed to send Action frame");
2669         }
2670         wpabuf_free(req);
2671
2672         return 0;
2673 }
2674
2675
2676 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
2677                                                size_t noa_len, u8 dialog_token)
2678 {
2679         struct wpabuf *resp;
2680         u8 *len;
2681
2682         resp = wpabuf_alloc(100 + noa_len);
2683         if (resp == NULL)
2684                 return NULL;
2685
2686         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
2687         len = p2p_buf_add_ie_hdr(resp);
2688         p2p_buf_add_status(resp, status);
2689         if (noa) {
2690                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
2691                 wpabuf_put_le16(resp, noa_len);
2692                 wpabuf_put_data(resp, noa, noa_len);
2693         } else
2694                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
2695         p2p_buf_update_ie_hdr(resp, len);
2696
2697         return resp;
2698 }
2699
2700
2701 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
2702                                      const u8 *sa, const u8 *data, size_t len,
2703                                      int rx_freq)
2704 {
2705         struct p2p_message msg;
2706         u8 status;
2707         struct wpabuf *resp;
2708         size_t g;
2709         struct p2p_group *group = NULL;
2710         int parsed = 0;
2711         u8 noa[50];
2712         int noa_len;
2713
2714         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2715                 "P2P: Received P2P Action - P2P Presence Request");
2716
2717         for (g = 0; g < p2p->num_groups; g++) {
2718                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
2719                               ETH_ALEN) == 0) {
2720                         group = p2p->groups[g];
2721                         break;
2722                 }
2723         }
2724         if (group == NULL) {
2725                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2726                         "P2P: Ignore P2P Presence Request for unknown group "
2727                         MACSTR, MAC2STR(da));
2728                 return;
2729         }
2730
2731         if (p2p_parse(data, len, &msg) < 0) {
2732                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2733                         "P2P: Failed to parse P2P Presence Request");
2734                 status = P2P_SC_FAIL_INVALID_PARAMS;
2735                 goto fail;
2736         }
2737         parsed = 1;
2738
2739         if (msg.noa == NULL) {
2740                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2741                         "P2P: No NoA attribute in P2P Presence Request");
2742                 status = P2P_SC_FAIL_INVALID_PARAMS;
2743                 goto fail;
2744         }
2745
2746         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
2747
2748 fail:
2749         if (p2p->cfg->get_noa)
2750                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
2751                                             sizeof(noa));
2752         else
2753                 noa_len = -1;
2754         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
2755                                        noa_len > 0 ? noa_len : 0,
2756                                        msg.dialog_token);
2757         if (parsed)
2758                 p2p_parse_free(&msg);
2759         if (resp == NULL)
2760                 return;
2761
2762         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2763         if (p2p->cfg->send_action(p2p->cfg->cb_ctx, rx_freq, sa, da, da,
2764                                   wpabuf_head(resp), wpabuf_len(resp), 200) <
2765             0) {
2766                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2767                         "P2P: Failed to send Action frame");
2768         }
2769         wpabuf_free(resp);
2770 }
2771
2772
2773 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
2774                                       const u8 *sa, const u8 *data, size_t len)
2775 {
2776         struct p2p_message msg;
2777
2778         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2779                 "P2P: Received P2P Action - P2P Presence Response");
2780
2781         if (p2p_parse(data, len, &msg) < 0) {
2782                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2783                         "P2P: Failed to parse P2P Presence Response");
2784                 return;
2785         }
2786
2787         if (msg.status == NULL || msg.noa == NULL) {
2788                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2789                         "P2P: No Status or NoA attribute in P2P Presence "
2790                         "Response");
2791                 p2p_parse_free(&msg);
2792                 return;
2793         }
2794
2795         if (*msg.status) {
2796                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2797                         "P2P: P2P Presence Request was rejected: status %u",
2798                         *msg.status);
2799                 p2p_parse_free(&msg);
2800                 return;
2801         }
2802
2803         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2804                 "P2P: P2P Presence Request was accepted");
2805         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
2806                     msg.noa, msg.noa_len);
2807         /* TODO: process NoA */
2808         p2p_parse_free(&msg);
2809 }
2810
2811
2812 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
2813 {
2814         struct p2p_data *p2p = eloop_ctx;
2815
2816         if (p2p->ext_listen_interval) {
2817                 /* Schedule next extended listen timeout */
2818                 eloop_register_timeout(p2p->ext_listen_interval_sec,
2819                                        p2p->ext_listen_interval_usec,
2820                                        p2p_ext_listen_timeout, p2p, NULL);
2821         }
2822
2823         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
2824                 /*
2825                  * This should not really happen, but it looks like the Listen
2826                  * command may fail is something else (e.g., a scan) was
2827                  * running at an inconvenient time. As a workaround, allow new
2828                  * Extended Listen operation to be started.
2829                  */
2830                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Previous "
2831                         "Extended Listen operation had not been completed - "
2832                         "try again");
2833                 p2p->ext_listen_only = 0;
2834                 p2p_set_state(p2p, P2P_IDLE);
2835         }
2836
2837         if (p2p->state != P2P_IDLE) {
2838                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Skip Extended "
2839                         "Listen timeout in active state (%s)",
2840                         p2p_state_txt(p2p->state));
2841                 return;
2842         }
2843
2844         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Extended Listen timeout");
2845         p2p->ext_listen_only = 1;
2846         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
2847                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Failed to start "
2848                         "Listen state for Extended Listen Timing");
2849                 p2p->ext_listen_only = 0;
2850         }
2851 }
2852
2853
2854 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
2855                    unsigned int interval)
2856 {
2857         if (period > 65535 || interval > 65535 || period > interval ||
2858             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
2859                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2860                         "P2P: Invalid Extended Listen Timing request: "
2861                         "period=%u interval=%u", period, interval);
2862                 return -1;
2863         }
2864
2865         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2866
2867         if (interval == 0) {
2868                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2869                         "P2P: Disabling Extended Listen Timing");
2870                 p2p->ext_listen_period = 0;
2871                 p2p->ext_listen_interval = 0;
2872                 return 0;
2873         }
2874
2875         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG,
2876                 "P2P: Enabling Extended Listen Timing: period %u msec, "
2877                 "interval %u msec", period, interval);
2878         p2p->ext_listen_period = period;
2879         p2p->ext_listen_interval = interval;
2880         p2p->ext_listen_interval_sec = interval / 1000;
2881         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
2882
2883         eloop_register_timeout(p2p->ext_listen_interval_sec,
2884                                p2p->ext_listen_interval_usec,
2885                                p2p_ext_listen_timeout, p2p, NULL);
2886
2887         return 0;
2888 }
2889
2890
2891 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
2892                       const u8 *ie, size_t ie_len)
2893 {
2894         struct p2p_message msg;
2895
2896         if (bssid == NULL || ie == NULL)
2897                 return;
2898
2899         os_memset(&msg, 0, sizeof(msg));
2900         if (p2p_parse_ies(ie, ie_len, &msg))
2901                 return;
2902         if (msg.minor_reason_code == NULL)
2903                 return;
2904
2905         wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
2906                 "P2P: Deauthentication notification BSSID " MACSTR
2907                 " reason_code=%u minor_reason_code=%u",
2908                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
2909
2910         p2p_parse_free(&msg);
2911 }
2912
2913
2914 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
2915                         const u8 *ie, size_t ie_len)
2916 {
2917         struct p2p_message msg;
2918
2919         if (bssid == NULL || ie == NULL)
2920                 return;
2921
2922         os_memset(&msg, 0, sizeof(msg));
2923         if (p2p_parse_ies(ie, ie_len, &msg))
2924                 return;
2925         if (msg.minor_reason_code == NULL)
2926                 return;
2927
2928         wpa_msg(p2p->cfg->msg_ctx, MSG_INFO,
2929                 "P2P: Disassociation notification BSSID " MACSTR
2930                 " reason_code=%u minor_reason_code=%u",
2931                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
2932
2933         p2p_parse_free(&msg);
2934 }
2935
2936
2937 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
2938 {
2939         if (enabled) {
2940                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
2941                         "Device operations enabled");
2942                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
2943         } else {
2944                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Managed P2P "
2945                         "Device operations disabled");
2946                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
2947         }
2948 }
2949
2950
2951 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
2952 {
2953         if (p2p_channel_to_freq(p2p->cfg->country, reg_class, channel) < 0)
2954                 return -1;
2955
2956         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Set Listen channel: "
2957                 "reg_class %u channel %u", reg_class, channel);
2958         p2p->cfg->reg_class = reg_class;
2959         p2p->cfg->channel = channel;
2960
2961         return 0;
2962 }
2963
2964
2965 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
2966 {
2967         wpa_hexdump_ascii(MSG_DEBUG, "P2P: New SSID postfix", postfix, len);
2968         if (postfix == NULL) {
2969                 p2p->cfg->ssid_postfix_len = 0;
2970                 return 0;
2971         }
2972         if (len > sizeof(p2p->cfg->ssid_postfix))
2973                 return -1;
2974         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
2975         p2p->cfg->ssid_postfix_len = len;
2976         return 0;
2977 }
2978
2979
2980 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
2981                            u8 *iface_addr)
2982 {
2983         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
2984         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
2985                 return -1;
2986         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
2987         return 0;
2988 }
2989
2990
2991 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
2992                            u8 *dev_addr)
2993 {
2994         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
2995         if (dev == NULL)
2996                 return -1;
2997         os_memcpy(dev_addr, dev->p2p_device_addr, ETH_ALEN);
2998         return 0;
2999 }
3000
3001
3002 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
3003 {
3004         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
3005         if (is_zero_ether_addr(p2p->peer_filter))
3006                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Disable peer "
3007                         "filter");
3008         else
3009                 wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Enable peer "
3010                         "filter for " MACSTR, MAC2STR(p2p->peer_filter));
3011 }
3012
3013
3014 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
3015 {
3016         wpa_msg(p2p->cfg->msg_ctx, MSG_DEBUG, "P2P: Cross connection %s",
3017                 enabled ? "enabled" : "disabled");
3018         if (p2p->cross_connect == enabled)
3019                 return;
3020         p2p->cross_connect = enabled;
3021         /* TODO: may need to tear down any action group where we are GO(?) */
3022 }
3023
3024
3025 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
3026 {
3027         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
3028         if (dev == NULL)
3029                 return -1;
3030         if (dev->oper_freq <= 0)
3031                 return -1;
3032         return dev->oper_freq;
3033 }