src/p2p/p2p.c

   1 /*
   2  * Wi-Fi Direct - P2P module
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eloop.h"
  13 #include "common/ieee802_11_defs.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "wps/wps_i.h"
  16 #include "p2p_i.h"
  17 #include "p2p.h"
  18
  19
  20 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx);
  21 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev);
  22 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
  23                                      const u8 *sa, const u8 *data, size_t len,
  24                                      int rx_freq);
  25 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
  26                                       const u8 *sa, const u8 *data,
  27                                       size_t len);
  28 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  29 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx);
  30
  31
  32 /*
  33  * p2p_scan recovery timeout
  34  *
  35  * Many drivers are using 30 second timeout on scan results. Allow a bit larger
  36  * timeout for this to avoid hitting P2P timeout unnecessarily.
  37  */
  38 #define P2P_SCAN_TIMEOUT 35
  39
  40 /**
  41  * P2P_PEER_EXPIRATION_AGE - Number of seconds after which inactive peer
  42  * entries will be removed
  43  */
  44 #ifndef P2P_PEER_EXPIRATION_AGE
  45 #define P2P_PEER_EXPIRATION_AGE 60
  46 #endif /* P2P_PEER_EXPIRATION_AGE */
  47
  48 #define P2P_PEER_EXPIRATION_INTERVAL (P2P_PEER_EXPIRATION_AGE / 2)
  49
  50 static void p2p_expire_peers(struct p2p_data *p2p)
  51 {
  52         struct p2p_device *dev, *n;
  53         struct os_reltime now;
  54         size_t i;
  55
  56         os_get_reltime(&now);
  57         dl_list_for_each_safe(dev, n, &p2p->devices, struct p2p_device, list) {
  58                 if (dev->last_seen.sec + P2P_PEER_EXPIRATION_AGE >= now.sec)
  59                         continue;
  60
  61                 if (dev == p2p->go_neg_peer) {
  62                         /*
  63                          * GO Negotiation is in progress with the peer, so
  64                          * don't expire the peer entry until GO Negotiation
  65                          * fails or times out.
  66                          */
  67                         continue;
  68                 }
  69
  70                 if (p2p->cfg->go_connected &&
  71                     p2p->cfg->go_connected(p2p->cfg->cb_ctx,
  72                                            dev->info.p2p_device_addr)) {
  73                         /*
  74                          * We are connected as a client to a group in which the
  75                          * peer is the GO, so do not expire the peer entry.
  76                          */
  77                         os_get_reltime(&dev->last_seen);
  78                         continue;
  79                 }
  80
  81                 for (i = 0; i < p2p->num_groups; i++) {
  82                         if (p2p_group_is_client_connected(
  83                                     p2p->groups[i], dev->info.p2p_device_addr))
  84                                 break;
  85                 }
  86                 if (i < p2p->num_groups) {
  87                         /*
  88                          * The peer is connected as a client in a group where
  89                          * we are the GO, so do not expire the peer entry.
  90                          */
  91                         os_get_reltime(&dev->last_seen);
  92                         continue;
  93                 }
  94
  95                 p2p_dbg(p2p, "Expiring old peer entry " MACSTR,
  96                         MAC2STR(dev->info.p2p_device_addr));
  97                 dl_list_del(&dev->list);
  98                 p2p_device_free(p2p, dev);
  99         }
 100 }
 101
 102
 103 static void p2p_expiration_timeout(void *eloop_ctx, void *timeout_ctx)
 104 {
 105         struct p2p_data *p2p = eloop_ctx;
 106         p2p_expire_peers(p2p);
 107         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
 108                                p2p_expiration_timeout, p2p, NULL);
 109 }
 110
 111
 112 static const char * p2p_state_txt(int state)
 113 {
 114         switch (state) {
 115         case P2P_IDLE:
 116                 return "IDLE";
 117         case P2P_SEARCH:
 118                 return "SEARCH";
 119         case P2P_CONNECT:
 120                 return "CONNECT";
 121         case P2P_CONNECT_LISTEN:
 122                 return "CONNECT_LISTEN";
 123         case P2P_GO_NEG:
 124                 return "GO_NEG";
 125         case P2P_LISTEN_ONLY:
 126                 return "LISTEN_ONLY";
 127         case P2P_WAIT_PEER_CONNECT:
 128                 return "WAIT_PEER_CONNECT";
 129         case P2P_WAIT_PEER_IDLE:
 130                 return "WAIT_PEER_IDLE";
 131         case P2P_SD_DURING_FIND:
 132                 return "SD_DURING_FIND";
 133         case P2P_PROVISIONING:
 134                 return "PROVISIONING";
 135         case P2P_PD_DURING_FIND:
 136                 return "PD_DURING_FIND";
 137         case P2P_INVITE:
 138                 return "INVITE";
 139         case P2P_INVITE_LISTEN:
 140                 return "INVITE_LISTEN";
 141         default:
 142                 return "?";
 143         }
 144 }
 145
 146
 147 const char * p2p_get_state_txt(struct p2p_data *p2p)
 148 {
 149         return p2p_state_txt(p2p->state);
 150 }
 151
 152
 153 u16 p2p_get_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 154 {
 155         struct p2p_device *dev = NULL;
 156
 157         if (!addr || !p2p)
 158                 return 0;
 159
 160         dev = p2p_get_device(p2p, addr);
 161         if (dev)
 162                 return dev->wps_prov_info;
 163         else
 164                 return 0;
 165 }
 166
 167
 168 void p2p_clear_provisioning_info(struct p2p_data *p2p, const u8 *addr)
 169 {
 170         struct p2p_device *dev = NULL;
 171
 172         if (!addr || !p2p)
 173                 return;
 174
 175         dev = p2p_get_device(p2p, addr);
 176         if (dev)
 177                 dev->wps_prov_info = 0;
 178 }
 179
 180
 181 void p2p_set_state(struct p2p_data *p2p, int new_state)
 182 {
 183         p2p_dbg(p2p, "State %s -> %s",
 184                 p2p_state_txt(p2p->state), p2p_state_txt(new_state));
 185         p2p->state = new_state;
 186 }
 187
 188
 189 void p2p_set_timeout(struct p2p_data *p2p, unsigned int sec, unsigned int usec)
 190 {
 191         p2p_dbg(p2p, "Set timeout (state=%s): %u.%06u sec",
 192                 p2p_state_txt(p2p->state), sec, usec);
 193         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 194         eloop_register_timeout(sec, usec, p2p_state_timeout, p2p, NULL);
 195 }
 196
 197
 198 void p2p_clear_timeout(struct p2p_data *p2p)
 199 {
 200         p2p_dbg(p2p, "Clear timeout (state=%s)", p2p_state_txt(p2p->state));
 201         eloop_cancel_timeout(p2p_state_timeout, p2p, NULL);
 202 }
 203
 204
 205 void p2p_go_neg_failed(struct p2p_data *p2p, struct p2p_device *peer,
 206                        int status)
 207 {
 208         struct p2p_go_neg_results res;
 209         p2p_clear_timeout(p2p);
 210         p2p_set_state(p2p, P2P_IDLE);
 211         if (p2p->go_neg_peer) {
 212                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
 213                 p2p->go_neg_peer->wps_method = WPS_NOT_READY;
 214                 p2p->go_neg_peer->oob_pw_id = 0;
 215         }
 216         p2p->go_neg_peer = NULL;
 217
 218         os_memset(&res, 0, sizeof(res));
 219         res.status = status;
 220         if (peer) {
 221                 os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr,
 222                           ETH_ALEN);
 223                 os_memcpy(res.peer_interface_addr, peer->intended_addr,
 224                           ETH_ALEN);
 225         }
 226         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
 227 }
 228
 229
 230 static void p2p_listen_in_find(struct p2p_data *p2p, int dev_disc)
 231 {
 232         unsigned int r, tu;
 233         int freq;
 234         struct wpabuf *ies;
 235
 236         p2p_dbg(p2p, "Starting short listen state (state=%s)",
 237                 p2p_state_txt(p2p->state));
 238
 239         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 240         if (freq < 0) {
 241                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 242                 return;
 243         }
 244
 245         os_get_random((u8 *) &r, sizeof(r));
 246         tu = (r % ((p2p->max_disc_int - p2p->min_disc_int) + 1) +
 247               p2p->min_disc_int) * 100;
 248         if (p2p->max_disc_tu >= 0 && tu > (unsigned int) p2p->max_disc_tu)
 249                 tu = p2p->max_disc_tu;
 250         if (!dev_disc && tu < 100)
 251                 tu = 100; /* Need to wait in non-device discovery use cases */
 252         if (p2p->cfg->max_listen && 1024 * tu / 1000 > p2p->cfg->max_listen)
 253                 tu = p2p->cfg->max_listen * 1000 / 1024;
 254
 255         if (tu == 0) {
 256                 p2p_dbg(p2p, "Skip listen state since duration was 0 TU");
 257                 p2p_set_timeout(p2p, 0, 0);
 258                 return;
 259         }
 260
 261         p2p->pending_listen_freq = freq;
 262         p2p->pending_listen_sec = 0;
 263         p2p->pending_listen_usec = 1024 * tu;
 264
 265         ies = p2p_build_probe_resp_ies(p2p);
 266         if (ies == NULL)
 267                 return;
 268
 269         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, 1024 * tu / 1000,
 270                     ies) < 0) {
 271                 p2p_dbg(p2p, "Failed to start listen mode");
 272                 p2p->pending_listen_freq = 0;
 273         }
 274         wpabuf_free(ies);
 275 }
 276
 277
 278 int p2p_listen(struct p2p_data *p2p, unsigned int timeout)
 279 {
 280         int freq;
 281         struct wpabuf *ies;
 282
 283         p2p_dbg(p2p, "Going to listen(only) state");
 284
 285         freq = p2p_channel_to_freq(p2p->cfg->reg_class, p2p->cfg->channel);
 286         if (freq < 0) {
 287                 p2p_dbg(p2p, "Unknown regulatory class/channel");
 288                 return -1;
 289         }
 290
 291         p2p->pending_listen_freq = freq;
 292         p2p->pending_listen_sec = timeout / 1000;
 293         p2p->pending_listen_usec = (timeout % 1000) * 1000;
 294
 295         if (p2p->p2p_scan_running) {
 296                 if (p2p->start_after_scan == P2P_AFTER_SCAN_CONNECT) {
 297                         p2p_dbg(p2p, "p2p_scan running - connect is already pending - skip listen");
 298                         return 0;
 299                 }
 300                 p2p_dbg(p2p, "p2p_scan running - delay start of listen state");
 301                 p2p->start_after_scan = P2P_AFTER_SCAN_LISTEN;
 302                 return 0;
 303         }
 304
 305         ies = p2p_build_probe_resp_ies(p2p);
 306         if (ies == NULL)
 307                 return -1;
 308
 309         if (p2p->cfg->start_listen(p2p->cfg->cb_ctx, freq, timeout, ies) < 0) {
 310                 p2p_dbg(p2p, "Failed to start listen mode");
 311                 p2p->pending_listen_freq = 0;
 312                 wpabuf_free(ies);
 313                 return -1;
 314         }
 315         wpabuf_free(ies);
 316
 317         p2p_set_state(p2p, P2P_LISTEN_ONLY);
 318
 319         return 0;
 320 }
 321
 322
 323 static void p2p_device_clear_reported(struct p2p_data *p2p)
 324 {
 325         struct p2p_device *dev;
 326         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list)
 327                 dev->flags &= ~P2P_DEV_REPORTED;
 328 }
 329
 330
 331 /**
 332  * p2p_get_device - Fetch a peer entry
 333  * @p2p: P2P module context from p2p_init()
 334  * @addr: P2P Device Address of the peer
 335  * Returns: Pointer to the device entry or %NULL if not found
 336  */
 337 struct p2p_device * p2p_get_device(struct p2p_data *p2p, const u8 *addr)
 338 {
 339         struct p2p_device *dev;
 340         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 341                 if (os_memcmp(dev->info.p2p_device_addr, addr, ETH_ALEN) == 0)
 342                         return dev;
 343         }
 344         return NULL;
 345 }
 346
 347
 348 /**
 349  * p2p_get_device_interface - Fetch a peer entry based on P2P Interface Address
 350  * @p2p: P2P module context from p2p_init()
 351  * @addr: P2P Interface Address of the peer
 352  * Returns: Pointer to the device entry or %NULL if not found
 353  */
 354 struct p2p_device * p2p_get_device_interface(struct p2p_data *p2p,
 355                                              const u8 *addr)
 356 {
 357         struct p2p_device *dev;
 358         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 359                 if (os_memcmp(dev->interface_addr, addr, ETH_ALEN) == 0)
 360                         return dev;
 361         }
 362         return NULL;
 363 }
 364
 365
 366 /**
 367  * p2p_create_device - Create a peer entry
 368  * @p2p: P2P module context from p2p_init()
 369  * @addr: P2P Device Address of the peer
 370  * Returns: Pointer to the device entry or %NULL on failure
 371  *
 372  * If there is already an entry for the peer, it will be returned instead of
 373  * creating a new one.
 374  */
 375 static struct p2p_device * p2p_create_device(struct p2p_data *p2p,
 376                                              const u8 *addr)
 377 {
 378         struct p2p_device *dev, *oldest = NULL;
 379         size_t count = 0;
 380
 381         dev = p2p_get_device(p2p, addr);
 382         if (dev)
 383                 return dev;
 384
 385         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 386                 count++;
 387                 if (oldest == NULL ||
 388                     os_reltime_before(&dev->last_seen, &oldest->last_seen))
 389                         oldest = dev;
 390         }
 391         if (count + 1 > p2p->cfg->max_peers && oldest) {
 392                 p2p_dbg(p2p, "Remove oldest peer entry to make room for a new peer");
 393                 dl_list_del(&oldest->list);
 394                 p2p_device_free(p2p, oldest);
 395         }
 396
 397         dev = os_zalloc(sizeof(*dev));
 398         if (dev == NULL)
 399                 return NULL;
 400         dl_list_add(&p2p->devices, &dev->list);
 401         os_memcpy(dev->info.p2p_device_addr, addr, ETH_ALEN);
 402
 403         return dev;
 404 }
 405
 406
 407 static void p2p_copy_client_info(struct p2p_device *dev,
 408                                  struct p2p_client_info *cli)
 409 {
 410         os_memcpy(dev->info.device_name, cli->dev_name, cli->dev_name_len);
 411         dev->info.device_name[cli->dev_name_len] = '\0';
 412         dev->info.dev_capab = cli->dev_capab;
 413         dev->info.config_methods = cli->config_methods;
 414         os_memcpy(dev->info.pri_dev_type, cli->pri_dev_type, 8);
 415         dev->info.wps_sec_dev_type_list_len = 8 * cli->num_sec_dev_types;
 416         os_memcpy(dev->info.wps_sec_dev_type_list, cli->sec_dev_types,
 417                   dev->info.wps_sec_dev_type_list_len);
 418 }
 419
 420
 421 static int p2p_add_group_clients(struct p2p_data *p2p, const u8 *go_dev_addr,
 422                                  const u8 *go_interface_addr, int freq,
 423                                  const u8 *gi, size_t gi_len)
 424 {
 425         struct p2p_group_info info;
 426         size_t c;
 427         struct p2p_device *dev;
 428
 429         if (gi == NULL)
 430                 return 0;
 431
 432         if (p2p_group_info_parse(gi, gi_len, &info) < 0)
 433                 return -1;
 434
 435         /*
 436          * Clear old data for this group; if the devices are still in the
 437          * group, the information will be restored in the loop following this.
 438          */
 439         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
 440                 if (os_memcmp(dev->member_in_go_iface, go_interface_addr,
 441                               ETH_ALEN) == 0) {
 442                         os_memset(dev->member_in_go_iface, 0, ETH_ALEN);
 443                         os_memset(dev->member_in_go_dev, 0, ETH_ALEN);
 444                 }
 445         }
 446
 447         for (c = 0; c < info.num_clients; c++) {
 448                 struct p2p_client_info *cli = &info.client[c];
 449                 if (os_memcmp(cli->p2p_device_addr, p2p->cfg->dev_addr,
 450                               ETH_ALEN) == 0)
 451                         continue; /* ignore our own entry */
 452                 dev = p2p_get_device(p2p, cli->p2p_device_addr);
 453                 if (dev) {
 454                         if (dev->flags & (P2P_DEV_GROUP_CLIENT_ONLY |
 455                                           P2P_DEV_PROBE_REQ_ONLY)) {
 456                                 /*
 457                                  * Update information since we have not
 458                                  * received this directly from the client.
 459                                  */
 460                                 p2p_copy_client_info(dev, cli);
 461                         } else {
 462                                 /*
 463                                  * Need to update P2P Client Discoverability
 464                                  * flag since it is valid only in P2P Group
 465                                  * Info attribute.
 466                                  */
 467                                 dev->info.dev_capab &=
 468                                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 469                                 dev->info.dev_capab |=
 470                                         cli->dev_capab &
 471                                         P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 472                         }
 473                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
 474                                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
 475                         }
 476                 } else {
 477                         dev = p2p_create_device(p2p, cli->p2p_device_addr);
 478                         if (dev == NULL)
 479                                 continue;
 480                         dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
 481                         p2p_copy_client_info(dev, cli);
 482                         dev->oper_freq = freq;
 483                         p2p->cfg->dev_found(p2p->cfg->cb_ctx,
 484                                             dev->info.p2p_device_addr,
 485                                             &dev->info, 1);
 486                         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 487                 }
 488
 489                 os_memcpy(dev->interface_addr, cli->p2p_interface_addr,
 490                           ETH_ALEN);
 491                 os_get_reltime(&dev->last_seen);
 492                 os_memcpy(dev->member_in_go_dev, go_dev_addr, ETH_ALEN);
 493                 os_memcpy(dev->member_in_go_iface, go_interface_addr,
 494                           ETH_ALEN);
 495         }
 496
 497         return 0;
 498 }
 499
 500
 501 static void p2p_copy_wps_info(struct p2p_data *p2p, struct p2p_device *dev,
 502                               int probe_req, const struct p2p_message *msg)
 503 {
 504         os_memcpy(dev->info.device_name, msg->device_name,
 505                   sizeof(dev->info.device_name));
 506
 507         if (msg->manufacturer &&
 508             msg->manufacturer_len < sizeof(dev->info.manufacturer)) {
 509                 os_memset(dev->info.manufacturer, 0,
 510                           sizeof(dev->info.manufacturer));
 511                 os_memcpy(dev->info.manufacturer, msg->manufacturer,
 512                           msg->manufacturer_len);
 513         }
 514
 515         if (msg->model_name &&
 516             msg->model_name_len < sizeof(dev->info.model_name)) {
 517                 os_memset(dev->info.model_name, 0,
 518                           sizeof(dev->info.model_name));
 519                 os_memcpy(dev->info.model_name, msg->model_name,
 520                           msg->model_name_len);
 521         }
 522
 523         if (msg->model_number &&
 524             msg->model_number_len < sizeof(dev->info.model_number)) {
 525                 os_memset(dev->info.model_number, 0,
 526                           sizeof(dev->info.model_number));
 527                 os_memcpy(dev->info.model_number, msg->model_number,
 528                           msg->model_number_len);
 529         }
 530
 531         if (msg->serial_number &&
 532             msg->serial_number_len < sizeof(dev->info.serial_number)) {
 533                 os_memset(dev->info.serial_number, 0,
 534                           sizeof(dev->info.serial_number));
 535                 os_memcpy(dev->info.serial_number, msg->serial_number,
 536                           msg->serial_number_len);
 537         }
 538
 539         if (msg->pri_dev_type)
 540                 os_memcpy(dev->info.pri_dev_type, msg->pri_dev_type,
 541                           sizeof(dev->info.pri_dev_type));
 542         else if (msg->wps_pri_dev_type)
 543                 os_memcpy(dev->info.pri_dev_type, msg->wps_pri_dev_type,
 544                           sizeof(dev->info.pri_dev_type));
 545
 546         if (msg->wps_sec_dev_type_list) {
 547                 os_memcpy(dev->info.wps_sec_dev_type_list,
 548                           msg->wps_sec_dev_type_list,
 549                           msg->wps_sec_dev_type_list_len);
 550                 dev->info.wps_sec_dev_type_list_len =
 551                         msg->wps_sec_dev_type_list_len;
 552         }
 553
 554         if (msg->capability) {
 555                 /*
 556                  * P2P Client Discoverability bit is reserved in all frames
 557                  * that use this function, so do not change its value here.
 558                  */
 559                 dev->info.dev_capab &= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 560                 dev->info.dev_capab |= msg->capability[0] &
 561                         ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
 562                 dev->info.group_capab = msg->capability[1];
 563         }
 564
 565         if (msg->ext_listen_timing) {
 566                 dev->ext_listen_period = WPA_GET_LE16(msg->ext_listen_timing);
 567                 dev->ext_listen_interval =
 568                         WPA_GET_LE16(msg->ext_listen_timing + 2);
 569         }
 570
 571         if (!probe_req) {
 572                 u16 new_config_methods;
 573                 new_config_methods = msg->config_methods ?
 574                         msg->config_methods : msg->wps_config_methods;
 575                 if (new_config_methods &&
 576                     dev->info.config_methods != new_config_methods) {
 577                         p2p_dbg(p2p, "Update peer " MACSTR
 578                                 " config_methods 0x%x -> 0x%x",
 579                                 MAC2STR(dev->info.p2p_device_addr),
 580                                 dev->info.config_methods,
 581                                 new_config_methods);
 582                         dev->info.config_methods = new_config_methods;
 583                 }
 584         }
 585 }
 586
 587
 588 /**
 589  * p2p_add_device - Add peer entries based on scan results or P2P frames
 590  * @p2p: P2P module context from p2p_init()
 591  * @addr: Source address of Beacon or Probe Response frame (may be either
 592  *      P2P Device Address or P2P Interface Address)
 593  * @level: Signal level (signal strength of the received frame from the peer)
 594  * @freq: Frequency on which the Beacon or Probe Response frame was received
 595  * @rx_time: Time when the result was received
 596  * @ies: IEs from the Beacon or Probe Response frame
 597  * @ies_len: Length of ies buffer in octets
 598  * @scan_res: Whether this was based on scan results
 599  * Returns: 0 on success, -1 on failure
 600  *
 601  * If the scan result is for a GO, the clients in the group will also be added
 602  * to the peer table. This function can also be used with some other frames
 603  * like Provision Discovery Request that contains P2P Capability and P2P Device
 604  * Info attributes.
 605  */
 606 int p2p_add_device(struct p2p_data *p2p, const u8 *addr, int freq,
 607                    struct os_reltime *rx_time, int level, const u8 *ies,
 608                    size_t ies_len, int scan_res)
 609 {
 610         struct p2p_device *dev;
 611         struct p2p_message msg;
 612         const u8 *p2p_dev_addr;
 613         int i;
 614         struct os_reltime time_now;
 615
 616         os_memset(&msg, 0, sizeof(msg));
 617         if (p2p_parse_ies(ies, ies_len, &msg)) {
 618                 p2p_dbg(p2p, "Failed to parse P2P IE for a device entry");
 619                 p2p_parse_free(&msg);
 620                 return -1;
 621         }
 622
 623         if (msg.p2p_device_addr)
 624                 p2p_dev_addr = msg.p2p_device_addr;
 625         else if (msg.device_id)
 626                 p2p_dev_addr = msg.device_id;
 627         else {
 628                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
 629                 p2p_parse_free(&msg);
 630                 return -1;
 631         }
 632
 633         if (!is_zero_ether_addr(p2p->peer_filter) &&
 634             os_memcmp(p2p_dev_addr, p2p->peer_filter, ETH_ALEN) != 0) {
 635                 p2p_dbg(p2p, "Do not add peer filter for " MACSTR
 636                         " due to peer filter", MAC2STR(p2p_dev_addr));
 637                 p2p_parse_free(&msg);
 638                 return 0;
 639         }
 640
 641         dev = p2p_create_device(p2p, p2p_dev_addr);
 642         if (dev == NULL) {
 643                 p2p_parse_free(&msg);
 644                 return -1;
 645         }
 646
 647         if (rx_time == NULL) {
 648                 os_get_reltime(&time_now);
 649                 rx_time = &time_now;
 650         }
 651
 652         /*
 653          * Update the device entry only if the new peer
 654          * entry is newer than the one previously stored.
 655          */
 656         if (dev->last_seen.sec > 0 &&
 657             os_reltime_before(rx_time, &dev->last_seen)) {
 658                 p2p_dbg(p2p, "Do not update peer entry based on old frame (rx_time=%u.%06u last_seen=%u.%06u)",
 659                         (unsigned int) rx_time->sec,
 660                         (unsigned int) rx_time->usec,
 661                         (unsigned int) dev->last_seen.sec,
 662                         (unsigned int) dev->last_seen.usec);
 663                 p2p_parse_free(&msg);
 664                 return -1;
 665         }
 666
 667         os_memcpy(&dev->last_seen, rx_time, sizeof(struct os_reltime));
 668
 669         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
 670
 671         if (os_memcmp(addr, p2p_dev_addr, ETH_ALEN) != 0)
 672                 os_memcpy(dev->interface_addr, addr, ETH_ALEN);
 673         if (msg.ssid &&
 674             (msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
 675              os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
 676              != 0)) {
 677                 os_memcpy(dev->oper_ssid, msg.ssid + 2, msg.ssid[1]);
 678                 dev->oper_ssid_len = msg.ssid[1];
 679         }
 680
 681         if (freq >= 2412 && freq <= 2484 && msg.ds_params &&
 682             *msg.ds_params >= 1 && *msg.ds_params <= 14) {
 683                 int ds_freq;
 684                 if (*msg.ds_params == 14)
 685                         ds_freq = 2484;
 686                 else
 687                         ds_freq = 2407 + *msg.ds_params * 5;
 688                 if (freq != ds_freq) {
 689                         p2p_dbg(p2p, "Update Listen frequency based on DS Parameter Set IE: %d -> %d MHz",
 690                                 freq, ds_freq);
 691                         freq = ds_freq;
 692                 }
 693         }
 694
 695         if (dev->listen_freq && dev->listen_freq != freq && scan_res) {
 696                 p2p_dbg(p2p, "Update Listen frequency based on scan results ("
 697                         MACSTR " %d -> %d MHz (DS param %d)",
 698                         MAC2STR(dev->info.p2p_device_addr), dev->listen_freq,
 699                         freq, msg.ds_params ? *msg.ds_params : -1);
 700         }
 701         if (scan_res) {
 702                 dev->listen_freq = freq;
 703                 if (msg.group_info)
 704                         dev->oper_freq = freq;
 705         }
 706         dev->info.level = level;
 707
 708         p2p_copy_wps_info(p2p, dev, 0, &msg);
 709
 710         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 711                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 712                 dev->info.wps_vendor_ext[i] = NULL;
 713         }
 714
 715         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 716                 if (msg.wps_vendor_ext[i] == NULL)
 717                         break;
 718                 dev->info.wps_vendor_ext[i] = wpabuf_alloc_copy(
 719                         msg.wps_vendor_ext[i], msg.wps_vendor_ext_len[i]);
 720                 if (dev->info.wps_vendor_ext[i] == NULL)
 721                         break;
 722         }
 723
 724         if (msg.wfd_subelems) {
 725                 wpabuf_free(dev->info.wfd_subelems);
 726                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
 727         }
 728
 729         if (scan_res) {
 730                 p2p_add_group_clients(p2p, p2p_dev_addr, addr, freq,
 731                                       msg.group_info, msg.group_info_len);
 732         }
 733
 734         p2p_parse_free(&msg);
 735
 736         if (p2p_pending_sd_req(p2p, dev))
 737                 dev->flags |= P2P_DEV_SD_SCHEDULE;
 738
 739         if (dev->flags & P2P_DEV_REPORTED)
 740                 return 0;
 741
 742         p2p_dbg(p2p, "Peer found with Listen frequency %d MHz (rx_time=%u.%06u)",
 743                 freq, (unsigned int) rx_time->sec,
 744                 (unsigned int) rx_time->usec);
 745         if (dev->flags & P2P_DEV_USER_REJECTED) {
 746                 p2p_dbg(p2p, "Do not report rejected device");
 747                 return 0;
 748         }
 749
 750         if (dev->info.config_methods == 0 &&
 751             (freq == 2412 || freq == 2437 || freq == 2462)) {
 752                 /*
 753                  * If we have only seen a Beacon frame from a GO, we do not yet
 754                  * know what WPS config methods it supports. Since some
 755                  * applications use config_methods value from P2P-DEVICE-FOUND
 756                  * events, postpone reporting this peer until we've fully
 757                  * discovered its capabilities.
 758                  *
 759                  * At least for now, do this only if the peer was detected on
 760                  * one of the social channels since that peer can be easily be
 761                  * found again and there are no limitations of having to use
 762                  * passive scan on this channels, so this can be done through
 763                  * Probe Response frame that includes the config_methods
 764                  * information.
 765                  */
 766                 p2p_dbg(p2p, "Do not report peer " MACSTR
 767                         " with unknown config methods", MAC2STR(addr));
 768                 return 0;
 769         }
 770
 771         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
 772                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
 773         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
 774
 775         return 0;
 776 }
 777
 778
 779 static void p2p_device_free(struct p2p_data *p2p, struct p2p_device *dev)
 780 {
 781         int i;
 782
 783         if (p2p->go_neg_peer == dev) {
 784                 /*
 785                  * If GO Negotiation is in progress, report that it has failed.
 786                  */
 787                 p2p_go_neg_failed(p2p, dev, -1);
 788                 p2p->go_neg_peer = NULL;
 789         }
 790         if (p2p->invite_peer == dev)
 791                 p2p->invite_peer = NULL;
 792         if (p2p->sd_peer == dev)
 793                 p2p->sd_peer = NULL;
 794         if (p2p->pending_client_disc_go == dev)
 795                 p2p->pending_client_disc_go = NULL;
 796
 797         /* dev_lost() device, but only if it was previously dev_found() */
 798         if (dev->flags & P2P_DEV_REPORTED_ONCE)
 799                 p2p->cfg->dev_lost(p2p->cfg->cb_ctx,
 800                                    dev->info.p2p_device_addr);
 801
 802         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
 803                 wpabuf_free(dev->info.wps_vendor_ext[i]);
 804                 dev->info.wps_vendor_ext[i] = NULL;
 805         }
 806
 807         wpabuf_free(dev->info.wfd_subelems);
 808
 809         os_free(dev);
 810 }
 811
 812
 813 static int p2p_get_next_prog_freq(struct p2p_data *p2p)
 814 {
 815         struct p2p_channels *c;
 816         struct p2p_reg_class *cla;
 817         size_t cl, ch;
 818         int found = 0;
 819         u8 reg_class;
 820         u8 channel;
 821         int freq;
 822
 823         c = &p2p->cfg->channels;
 824         for (cl = 0; cl < c->reg_classes; cl++) {
 825                 cla = &c->reg_class[cl];
 826                 if (cla->reg_class != p2p->last_prog_scan_class)
 827                         continue;
 828                 for (ch = 0; ch < cla->channels; ch++) {
 829                         if (cla->channel[ch] == p2p->last_prog_scan_chan) {
 830                                 found = 1;
 831                                 break;
 832                         }
 833                 }
 834                 if (found)
 835                         break;
 836         }
 837
 838         if (!found) {
 839                 /* Start from beginning */
 840                 reg_class = c->reg_class[0].reg_class;
 841                 channel = c->reg_class[0].channel[0];
 842         } else {
 843                 /* Pick the next channel */
 844                 ch++;
 845                 if (ch == cla->channels) {
 846                         cl++;
 847                         if (cl == c->reg_classes)
 848                                 cl = 0;
 849                         ch = 0;
 850                 }
 851                 reg_class = c->reg_class[cl].reg_class;
 852                 channel = c->reg_class[cl].channel[ch];
 853         }
 854
 855         freq = p2p_channel_to_freq(reg_class, channel);
 856         p2p_dbg(p2p, "Next progressive search channel: reg_class %u channel %u -> %d MHz",
 857                 reg_class, channel, freq);
 858         p2p->last_prog_scan_class = reg_class;
 859         p2p->last_prog_scan_chan = channel;
 860
 861         if (freq == 2412 || freq == 2437 || freq == 2462)
 862                 return 0; /* No need to add social channels */
 863         return freq;
 864 }
 865
 866
 867 static void p2p_search(struct p2p_data *p2p)
 868 {
 869         int freq = 0;
 870         enum p2p_scan_type type;
 871         u16 pw_id = DEV_PW_DEFAULT;
 872         int res;
 873
 874         if (p2p->drv_in_listen) {
 875                 p2p_dbg(p2p, "Driver is still in Listen state - wait for it to end before continuing");
 876                 return;
 877         }
 878         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
 879
 880         if (p2p->find_type == P2P_FIND_PROGRESSIVE &&
 881             (freq = p2p_get_next_prog_freq(p2p)) > 0) {
 882                 type = P2P_SCAN_SOCIAL_PLUS_ONE;
 883                 p2p_dbg(p2p, "Starting search (+ freq %u)", freq);
 884         } else {
 885                 type = P2P_SCAN_SOCIAL;
 886                 p2p_dbg(p2p, "Starting search");
 887         }
 888
 889         res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, type, freq,
 890                                  p2p->num_req_dev_types, p2p->req_dev_types,
 891                                  p2p->find_dev_id, pw_id);
 892         if (res < 0) {
 893                 p2p_dbg(p2p, "Scan request failed");
 894                 p2p_continue_find(p2p);
 895         } else {
 896                 p2p_dbg(p2p, "Running p2p_scan");
 897                 p2p->p2p_scan_running = 1;
 898                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
 899                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
 900                                        p2p, NULL);
 901         }
 902 }
 903
 904
 905 static void p2p_find_timeout(void *eloop_ctx, void *timeout_ctx)
 906 {
 907         struct p2p_data *p2p = eloop_ctx;
 908         p2p_dbg(p2p, "Find timeout -> stop");
 909         p2p_stop_find(p2p);
 910 }
 911
 912
 913 static int p2p_run_after_scan(struct p2p_data *p2p)
 914 {
 915         struct p2p_device *dev;
 916         enum p2p_after_scan op;
 917
 918         if (p2p->after_scan_tx) {
 919                 p2p->after_scan_tx_in_progress = 1;
 920                 p2p_dbg(p2p, "Send pending Action frame at p2p_scan completion");
 921                 p2p->cfg->send_action(p2p->cfg->cb_ctx,
 922                                       p2p->after_scan_tx->freq,
 923                                       p2p->after_scan_tx->dst,
 924                                       p2p->after_scan_tx->src,
 925                                       p2p->after_scan_tx->bssid,
 926                                       (u8 *) (p2p->after_scan_tx + 1),
 927                                       p2p->after_scan_tx->len,
 928                                       p2p->after_scan_tx->wait_time);
 929                 os_free(p2p->after_scan_tx);
 930                 p2p->after_scan_tx = NULL;
 931                 return 1;
 932         }
 933
 934         op = p2p->start_after_scan;
 935         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
 936         switch (op) {
 937         case P2P_AFTER_SCAN_NOTHING:
 938                 break;
 939         case P2P_AFTER_SCAN_LISTEN:
 940                 p2p_dbg(p2p, "Start previously requested Listen state");
 941                 p2p_listen(p2p, p2p->pending_listen_sec * 1000 +
 942                            p2p->pending_listen_usec / 1000);
 943                 return 1;
 944         case P2P_AFTER_SCAN_CONNECT:
 945                 p2p_dbg(p2p, "Start previously requested connect with " MACSTR,
 946                         MAC2STR(p2p->after_scan_peer));
 947                 dev = p2p_get_device(p2p, p2p->after_scan_peer);
 948                 if (dev == NULL) {
 949                         p2p_dbg(p2p, "Peer not known anymore");
 950                         break;
 951                 }
 952                 p2p_connect_send(p2p, dev);
 953                 return 1;
 954         }
 955
 956         return 0;
 957 }
 958
 959
 960 static void p2p_scan_timeout(void *eloop_ctx, void *timeout_ctx)
 961 {
 962         struct p2p_data *p2p = eloop_ctx;
 963         int running;
 964         p2p_dbg(p2p, "p2p_scan timeout (running=%d)", p2p->p2p_scan_running);
 965         running = p2p->p2p_scan_running;
 966         /* Make sure we recover from missed scan results callback */
 967         p2p->p2p_scan_running = 0;
 968
 969         if (running)
 970                 p2p_run_after_scan(p2p);
 971 }
 972
 973
 974 static void p2p_free_req_dev_types(struct p2p_data *p2p)
 975 {
 976         p2p->num_req_dev_types = 0;
 977         os_free(p2p->req_dev_types);
 978         p2p->req_dev_types = NULL;
 979 }
 980
 981
 982 int p2p_find(struct p2p_data *p2p, unsigned int timeout,
 983              enum p2p_discovery_type type,
 984              unsigned int num_req_dev_types, const u8 *req_dev_types,
 985              const u8 *dev_id, unsigned int search_delay)
 986 {
 987         int res;
 988
 989         p2p_dbg(p2p, "Starting find (type=%d)", type);
 990         os_get_reltime(&p2p->find_start);
 991         if (p2p->p2p_scan_running) {
 992                 p2p_dbg(p2p, "p2p_scan is already running");
 993         }
 994
 995         p2p_free_req_dev_types(p2p);
 996         if (req_dev_types && num_req_dev_types) {
 997                 p2p->req_dev_types = os_malloc(num_req_dev_types *
 998                                                WPS_DEV_TYPE_LEN);
 999                 if (p2p->req_dev_types == NULL)
1000                         return -1;
1001                 os_memcpy(p2p->req_dev_types, req_dev_types,
1002                           num_req_dev_types * WPS_DEV_TYPE_LEN);
1003                 p2p->num_req_dev_types = num_req_dev_types;
1004         }
1005
1006         if (dev_id) {
1007                 os_memcpy(p2p->find_dev_id_buf, dev_id, ETH_ALEN);
1008                 p2p->find_dev_id = p2p->find_dev_id_buf;
1009         } else
1010                 p2p->find_dev_id = NULL;
1011
1012         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1013         p2p_clear_timeout(p2p);
1014         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1015         p2p->find_type = type;
1016         p2p_device_clear_reported(p2p);
1017         p2p_set_state(p2p, P2P_SEARCH);
1018         p2p->search_delay = search_delay;
1019         p2p->in_search_delay = 0;
1020         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1021         p2p->last_p2p_find_timeout = timeout;
1022         if (timeout)
1023                 eloop_register_timeout(timeout, 0, p2p_find_timeout,
1024                                        p2p, NULL);
1025         switch (type) {
1026         case P2P_FIND_START_WITH_FULL:
1027         case P2P_FIND_PROGRESSIVE:
1028                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_FULL, 0,
1029                                          p2p->num_req_dev_types,
1030                                          p2p->req_dev_types, dev_id,
1031                                          DEV_PW_DEFAULT);
1032                 break;
1033         case P2P_FIND_ONLY_SOCIAL:
1034                 res = p2p->cfg->p2p_scan(p2p->cfg->cb_ctx, P2P_SCAN_SOCIAL, 0,
1035                                          p2p->num_req_dev_types,
1036                                          p2p->req_dev_types, dev_id,
1037                                          DEV_PW_DEFAULT);
1038                 break;
1039         default:
1040                 return -1;
1041         }
1042
1043         if (res == 0) {
1044                 p2p_dbg(p2p, "Running p2p_scan");
1045                 p2p->p2p_scan_running = 1;
1046                 eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
1047                 eloop_register_timeout(P2P_SCAN_TIMEOUT, 0, p2p_scan_timeout,
1048                                        p2p, NULL);
1049         } else if (p2p->p2p_scan_running) {
1050                 p2p_dbg(p2p, "Failed to start p2p_scan - another p2p_scan was already running");
1051                 /* wait for the previous p2p_scan to complete */
1052         } else {
1053                 p2p_dbg(p2p, "Failed to start p2p_scan");
1054                 p2p_set_state(p2p, P2P_IDLE);
1055                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1056         }
1057
1058         return res;
1059 }
1060
1061
1062 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1063 {
1064         p2p_dbg(p2p, "Stopping find");
1065         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1066         p2p_clear_timeout(p2p);
1067         if (p2p->state == P2P_SEARCH)
1068                 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1069         p2p_set_state(p2p, P2P_IDLE);
1070         p2p_free_req_dev_types(p2p);
1071         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1072         if (p2p->go_neg_peer)
1073                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1074         p2p->go_neg_peer = NULL;
1075         p2p->sd_peer = NULL;
1076         p2p->invite_peer = NULL;
1077         p2p_stop_listen_for_freq(p2p, freq);
1078 }
1079
1080
1081 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1082 {
1083         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1084                 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1085                 return;
1086         }
1087         if (p2p->in_listen) {
1088                 p2p->in_listen = 0;
1089                 p2p_clear_timeout(p2p);
1090         }
1091         if (p2p->drv_in_listen) {
1092                 /*
1093                  * The driver may not deliver callback to p2p_listen_end()
1094                  * when the operation gets canceled, so clear the internal
1095                  * variable that is tracking driver state.
1096                  */
1097                 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1098                 p2p->drv_in_listen = 0;
1099         }
1100         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1101 }
1102
1103
1104 void p2p_stop_listen(struct p2p_data *p2p)
1105 {
1106         if (p2p->state != P2P_LISTEN_ONLY) {
1107                 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1108                 return;
1109         }
1110
1111         p2p_stop_listen_for_freq(p2p, 0);
1112         p2p_set_state(p2p, P2P_IDLE);
1113 }
1114
1115
1116 void p2p_stop_find(struct p2p_data *p2p)
1117 {
1118         p2p_stop_find_for_freq(p2p, 0);
1119 }
1120
1121
1122 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1123                                     unsigned int force_freq,
1124                                     unsigned int pref_freq, int go)
1125 {
1126         u8 op_class, op_channel;
1127         unsigned int freq = force_freq ? force_freq : pref_freq;
1128
1129         p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1130                 force_freq, pref_freq, go);
1131         if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1132                 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1133                 return -1;
1134         }
1135
1136         if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1137             (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1138                                           op_channel))) {
1139                 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1140                         freq, op_class, op_channel);
1141                 return -1;
1142         }
1143
1144         p2p->op_reg_class = op_class;
1145         p2p->op_channel = op_channel;
1146
1147         if (force_freq) {
1148                 p2p->channels.reg_classes = 1;
1149                 p2p->channels.reg_class[0].channels = 1;
1150                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1151                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1152         } else {
1153                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1154                           sizeof(struct p2p_channels));
1155         }
1156
1157         return 0;
1158 }
1159
1160
1161 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1162 {
1163         u8 op_class, op_channel;
1164         const int op_classes_5ghz[] = { 124, 115, 0 };
1165         const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1166         const int op_classes_vht[] = { 128, 0 };
1167
1168         p2p_dbg(p2p, "Prepare channel best");
1169
1170         if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1171             p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1172             p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1173             == 0) {
1174                 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1175                 p2p->op_reg_class = op_class;
1176                 p2p->op_channel = op_channel;
1177         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1178                    p2p_supported_freq(p2p, p2p->best_freq_5) &&
1179                    p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1180                    == 0) {
1181                 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1182                 p2p->op_reg_class = op_class;
1183                 p2p->op_channel = op_channel;
1184         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1185                    p2p_supported_freq(p2p, p2p->best_freq_24) &&
1186                    p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1187                                        &op_channel) == 0) {
1188                 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1189                 p2p->op_reg_class = op_class;
1190                 p2p->op_channel = op_channel;
1191         } else if (p2p->cfg->num_pref_chan > 0 &&
1192                    p2p_channels_includes(&p2p->cfg->channels,
1193                                          p2p->cfg->pref_chan[0].op_class,
1194                                          p2p->cfg->pref_chan[0].chan)) {
1195                 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1196                 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1197                 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1198         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1199                                       &p2p->op_reg_class, &p2p->op_channel) ==
1200                    0) {
1201                 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1202                         p2p->op_reg_class, p2p->op_channel);
1203         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1204                                       &p2p->op_reg_class, &p2p->op_channel) ==
1205                    0) {
1206                 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1207                         p2p->op_reg_class, p2p->op_channel);
1208         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1209                                       &p2p->op_reg_class, &p2p->op_channel) ==
1210                    0) {
1211                 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1212                         p2p->op_reg_class, p2p->op_channel);
1213         } else {
1214                 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1215                 p2p->op_reg_class = p2p->cfg->op_reg_class;
1216                 p2p->op_channel = p2p->cfg->op_channel;
1217         }
1218
1219         os_memcpy(&p2p->channels, &p2p->cfg->channels,
1220                   sizeof(struct p2p_channels));
1221 }
1222
1223
1224 /**
1225  * p2p_prepare_channel - Select operating channel for GO Negotiation
1226  * @p2p: P2P module context from p2p_init()
1227  * @dev: Selected peer device
1228  * @force_freq: Forced frequency in MHz or 0 if not forced
1229  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1230  * @go: Whether the local end will be forced to be GO
1231  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1232  *
1233  * This function is used to do initial operating channel selection for GO
1234  * Negotiation prior to having received peer information. The selected channel
1235  * may be further optimized in p2p_reselect_channel() once the peer information
1236  * is available.
1237  */
1238 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1239                         unsigned int force_freq, unsigned int pref_freq, int go)
1240 {
1241         p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1242                 force_freq, pref_freq, go);
1243         if (force_freq || pref_freq) {
1244                 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1245                     0)
1246                         return -1;
1247         } else {
1248                 p2p_prepare_channel_best(p2p);
1249         }
1250         p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1251         if (go)
1252                 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1253         else if (!force_freq)
1254                 p2p_channels_union(&p2p->channels, &p2p->cfg->cli_channels,
1255                                    &p2p->channels);
1256         p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1257
1258         p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1259                 p2p->op_reg_class, p2p->op_channel,
1260                 force_freq ? " (forced)" : "");
1261
1262         if (force_freq)
1263                 dev->flags |= P2P_DEV_FORCE_FREQ;
1264         else
1265                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1266
1267         return 0;
1268 }
1269
1270
1271 static void p2p_set_dev_persistent(struct p2p_device *dev,
1272                                    int persistent_group)
1273 {
1274         switch (persistent_group) {
1275         case 0:
1276                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1277                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1278                 break;
1279         case 1:
1280                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1281                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1282                 break;
1283         case 2:
1284                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1285                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1286                 break;
1287         }
1288 }
1289
1290
1291 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1292                 enum p2p_wps_method wps_method,
1293                 int go_intent, const u8 *own_interface_addr,
1294                 unsigned int force_freq, int persistent_group,
1295                 const u8 *force_ssid, size_t force_ssid_len,
1296                 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1297 {
1298         struct p2p_device *dev;
1299
1300         p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1301                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1302                 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1303                 "oob_pw_id=%u",
1304                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1305                 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1306
1307         dev = p2p_get_device(p2p, peer_addr);
1308         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1309                 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1310                         MAC2STR(peer_addr));
1311                 return -1;
1312         }
1313
1314         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1315                                 go_intent == 15) < 0)
1316                 return -1;
1317
1318         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1319                 if (!(dev->info.dev_capab &
1320                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1321                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1322                                 " that is in a group and is not discoverable",
1323                                 MAC2STR(peer_addr));
1324                         return -1;
1325                 }
1326                 if (dev->oper_freq <= 0) {
1327                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1328                                 " with incomplete information",
1329                                 MAC2STR(peer_addr));
1330                         return -1;
1331                 }
1332
1333                 /*
1334                  * First, try to connect directly. If the peer does not
1335                  * acknowledge frames, assume it is sleeping and use device
1336                  * discoverability via the GO at that point.
1337                  */
1338         }
1339
1340         p2p->ssid_set = 0;
1341         if (force_ssid) {
1342                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1343                                   force_ssid, force_ssid_len);
1344                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1345                 p2p->ssid_len = force_ssid_len;
1346                 p2p->ssid_set = 1;
1347         }
1348
1349         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1350         dev->flags &= ~P2P_DEV_USER_REJECTED;
1351         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1352         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1353         if (pd_before_go_neg)
1354                 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1355         else {
1356                 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1357                 /*
1358                  * Assign dialog token and tie breaker here to use the same
1359                  * values in each retry within the same GO Negotiation exchange.
1360                  */
1361                 dev->dialog_token++;
1362                 if (dev->dialog_token == 0)
1363                         dev->dialog_token = 1;
1364                 dev->tie_breaker = p2p->next_tie_breaker;
1365                 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1366         }
1367         dev->connect_reqs = 0;
1368         dev->go_neg_req_sent = 0;
1369         dev->go_state = UNKNOWN_GO;
1370         p2p_set_dev_persistent(dev, persistent_group);
1371         p2p->go_intent = go_intent;
1372         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1373
1374         if (p2p->state != P2P_IDLE)
1375                 p2p_stop_find(p2p);
1376
1377         if (p2p->after_scan_tx) {
1378                 /*
1379                  * We need to drop the pending frame to avoid issues with the
1380                  * new GO Negotiation, e.g., when the pending frame was from a
1381                  * previous attempt at starting a GO Negotiation.
1382                  */
1383                 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1384                 os_free(p2p->after_scan_tx);
1385                 p2p->after_scan_tx = NULL;
1386         }
1387
1388         dev->wps_method = wps_method;
1389         dev->oob_pw_id = oob_pw_id;
1390         dev->status = P2P_SC_SUCCESS;
1391
1392         if (p2p->p2p_scan_running) {
1393                 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1394                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1395                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1396                 return 0;
1397         }
1398         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1399
1400         return p2p_connect_send(p2p, dev);
1401 }
1402
1403
1404 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1405                   enum p2p_wps_method wps_method,
1406                   int go_intent, const u8 *own_interface_addr,
1407                   unsigned int force_freq, int persistent_group,
1408                   const u8 *force_ssid, size_t force_ssid_len,
1409                   unsigned int pref_freq, u16 oob_pw_id)
1410 {
1411         struct p2p_device *dev;
1412
1413         p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1414                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1415                 " wps_method=%d  persistent_group=%d oob_pw_id=%u",
1416                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1417                 wps_method, persistent_group, oob_pw_id);
1418
1419         dev = p2p_get_device(p2p, peer_addr);
1420         if (dev == NULL) {
1421                 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1422                         MAC2STR(peer_addr));
1423                 return -1;
1424         }
1425
1426         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1427                                 15) < 0)
1428                 return -1;
1429
1430         p2p->ssid_set = 0;
1431         if (force_ssid) {
1432                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1433                                   force_ssid, force_ssid_len);
1434                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1435                 p2p->ssid_len = force_ssid_len;
1436                 p2p->ssid_set = 1;
1437         }
1438
1439         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1440         dev->flags &= ~P2P_DEV_USER_REJECTED;
1441         dev->go_neg_req_sent = 0;
1442         dev->go_state = UNKNOWN_GO;
1443         p2p_set_dev_persistent(dev, persistent_group);
1444         p2p->go_intent = go_intent;
1445         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1446
1447         dev->wps_method = wps_method;
1448         dev->oob_pw_id = oob_pw_id;
1449         dev->status = P2P_SC_SUCCESS;
1450
1451         return 0;
1452 }
1453
1454
1455 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1456                       struct p2p_device *dev, struct p2p_message *msg)
1457 {
1458         os_get_reltime(&dev->last_seen);
1459
1460         p2p_copy_wps_info(p2p, dev, 0, msg);
1461
1462         if (msg->listen_channel) {
1463                 int freq;
1464                 freq = p2p_channel_to_freq(msg->listen_channel[3],
1465                                            msg->listen_channel[4]);
1466                 if (freq < 0) {
1467                         p2p_dbg(p2p, "Unknown peer Listen channel: "
1468                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1469                                 msg->listen_channel[0],
1470                                 msg->listen_channel[1],
1471                                 msg->listen_channel[2],
1472                                 msg->listen_channel[3],
1473                                 msg->listen_channel[4]);
1474                 } else {
1475                         p2p_dbg(p2p, "Update peer " MACSTR
1476                                 " Listen channel: %u -> %u MHz",
1477                                 MAC2STR(dev->info.p2p_device_addr),
1478                                 dev->listen_freq, freq);
1479                         dev->listen_freq = freq;
1480                 }
1481         }
1482
1483         if (msg->wfd_subelems) {
1484                 wpabuf_free(dev->info.wfd_subelems);
1485                 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1486         }
1487
1488         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1489                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1490                 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1491         } else {
1492                 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1493                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1494                         "listen_freq=%d",
1495                         MAC2STR(dev->info.p2p_device_addr),
1496                         dev->info.dev_capab, dev->info.group_capab,
1497                         dev->info.device_name, dev->listen_freq);
1498         }
1499
1500         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1501
1502         if (dev->flags & P2P_DEV_USER_REJECTED) {
1503                 p2p_dbg(p2p, "Do not report rejected device");
1504                 return;
1505         }
1506
1507         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1508                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1509         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1510 }
1511
1512
1513 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1514 {
1515         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1516         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1517         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1518                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1519         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1520 }
1521
1522
1523 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1524 {
1525         p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1526         p2p_random(params->passphrase, 8);
1527         return 0;
1528 }
1529
1530
1531 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1532 {
1533         struct p2p_go_neg_results res;
1534         int go = peer->go_state == LOCAL_GO;
1535         struct p2p_channels intersection;
1536         int freqs;
1537         size_t i, j;
1538
1539         p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1540                 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1541
1542         os_memset(&res, 0, sizeof(res));
1543         res.role_go = go;
1544         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1545         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1546         res.wps_method = peer->wps_method;
1547         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1548                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1549                         res.persistent_group = 2;
1550                 else
1551                         res.persistent_group = 1;
1552         }
1553
1554         if (go) {
1555                 /* Setup AP mode for WPS provisioning */
1556                 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1557                                                p2p->op_channel);
1558                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1559                 res.ssid_len = p2p->ssid_len;
1560                 p2p_random(res.passphrase, 8);
1561         } else {
1562                 res.freq = peer->oper_freq;
1563                 if (p2p->ssid_len) {
1564                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1565                         res.ssid_len = p2p->ssid_len;
1566                 }
1567         }
1568
1569         p2p_channels_dump(p2p, "own channels", &p2p->channels);
1570         p2p_channels_dump(p2p, "peer channels", &peer->channels);
1571         p2p_channels_intersect(&p2p->channels, &peer->channels,
1572                                &intersection);
1573         if (go) {
1574                 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1575                 p2p_channels_dump(p2p, "intersection after no-GO removal",
1576                                   &intersection);
1577         }
1578         freqs = 0;
1579         for (i = 0; i < intersection.reg_classes; i++) {
1580                 struct p2p_reg_class *c = &intersection.reg_class[i];
1581                 if (freqs + 1 == P2P_MAX_CHANNELS)
1582                         break;
1583                 for (j = 0; j < c->channels; j++) {
1584                         int freq;
1585                         if (freqs + 1 == P2P_MAX_CHANNELS)
1586                                 break;
1587                         freq = p2p_channel_to_freq(c->reg_class, c->channel[j]);
1588                         if (freq < 0)
1589                                 continue;
1590                         res.freq_list[freqs++] = freq;
1591                 }
1592         }
1593
1594         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1595
1596         p2p_clear_timeout(p2p);
1597         p2p->ssid_set = 0;
1598         peer->go_neg_req_sent = 0;
1599         peer->wps_method = WPS_NOT_READY;
1600         peer->oob_pw_id = 0;
1601
1602         p2p_set_state(p2p, P2P_PROVISIONING);
1603         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1604 }
1605
1606
1607 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1608                               const u8 *data, size_t len, int rx_freq)
1609 {
1610         p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1611         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1612
1613         if (len < 1)
1614                 return;
1615
1616         switch (data[0]) {
1617         case P2P_GO_NEG_REQ:
1618                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1619                 break;
1620         case P2P_GO_NEG_RESP:
1621                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1622                 break;
1623         case P2P_GO_NEG_CONF:
1624                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1625                 break;
1626         case P2P_INVITATION_REQ:
1627                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1628                                            rx_freq);
1629                 break;
1630         case P2P_INVITATION_RESP:
1631                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
1632                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1633                 break;
1634         case P2P_PROV_DISC_REQ:
1635                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1636                 break;
1637         case P2P_PROV_DISC_RESP:
1638                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1639                 break;
1640         case P2P_DEV_DISC_REQ:
1641                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1642                 break;
1643         case P2P_DEV_DISC_RESP:
1644                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1645                 break;
1646         default:
1647                 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1648                         data[0]);
1649                 break;
1650         }
1651 }
1652
1653
1654 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1655                                  const u8 *sa, const u8 *bssid, const u8 *data,
1656                                  size_t len, int freq)
1657 {
1658         if (len < 1)
1659                 return;
1660
1661         switch (data[0]) {
1662         case WLAN_PA_VENDOR_SPECIFIC:
1663                 data++;
1664                 len--;
1665                 if (len < 3)
1666                         return;
1667                 if (WPA_GET_BE24(data) != OUI_WFA)
1668                         return;
1669
1670                 data += 3;
1671                 len -= 3;
1672                 if (len < 1)
1673                         return;
1674
1675                 if (*data != P2P_OUI_TYPE)
1676                         return;
1677
1678                 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1679                 break;
1680         case WLAN_PA_GAS_INITIAL_REQ:
1681                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1682                 break;
1683         case WLAN_PA_GAS_INITIAL_RESP:
1684                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1685                 break;
1686         case WLAN_PA_GAS_COMEBACK_REQ:
1687                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1688                 break;
1689         case WLAN_PA_GAS_COMEBACK_RESP:
1690                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1691                 break;
1692         }
1693 }
1694
1695
1696 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1697                    const u8 *bssid, u8 category,
1698                    const u8 *data, size_t len, int freq)
1699 {
1700         if (category == WLAN_ACTION_PUBLIC) {
1701                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1702                 return;
1703         }
1704
1705         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1706                 return;
1707
1708         if (len < 4)
1709                 return;
1710
1711         if (WPA_GET_BE24(data) != OUI_WFA)
1712                 return;
1713         data += 3;
1714         len -= 3;
1715
1716         if (*data != P2P_OUI_TYPE)
1717                 return;
1718         data++;
1719         len--;
1720
1721         /* P2P action frame */
1722         p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1723         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1724
1725         if (len < 1)
1726                 return;
1727         switch (data[0]) {
1728         case P2P_NOA:
1729                 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1730                 /* TODO */
1731                 break;
1732         case P2P_PRESENCE_REQ:
1733                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1734                 break;
1735         case P2P_PRESENCE_RESP:
1736                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1737                 break;
1738         case P2P_GO_DISC_REQ:
1739                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1740                 break;
1741         default:
1742                 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1743                 break;
1744         }
1745 }
1746
1747
1748 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1749 {
1750         struct p2p_data *p2p = eloop_ctx;
1751         if (p2p->go_neg_peer == NULL)
1752                 return;
1753         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1754         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1755         p2p_connect_send(p2p, p2p->go_neg_peer);
1756 }
1757
1758
1759 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1760 {
1761         struct p2p_data *p2p = eloop_ctx;
1762         if (p2p->invite_peer == NULL)
1763                 return;
1764         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1765         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr);
1766 }
1767
1768
1769 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1770                                        const u8 *ie, size_t ie_len)
1771 {
1772         struct p2p_message msg;
1773         struct p2p_device *dev;
1774
1775         os_memset(&msg, 0, sizeof(msg));
1776         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1777         {
1778                 p2p_parse_free(&msg);
1779                 return; /* not a P2P probe */
1780         }
1781
1782         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1783             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1784             != 0) {
1785                 /* The Probe Request is not part of P2P Device Discovery. It is
1786                  * not known whether the source address of the frame is the P2P
1787                  * Device Address or P2P Interface Address. Do not add a new
1788                  * peer entry based on this frames.
1789                  */
1790                 p2p_parse_free(&msg);
1791                 return;
1792         }
1793
1794         dev = p2p_get_device(p2p, addr);
1795         if (dev) {
1796                 if (dev->country[0] == 0 && msg.listen_channel)
1797                         os_memcpy(dev->country, msg.listen_channel, 3);
1798                 os_get_reltime(&dev->last_seen);
1799                 p2p_parse_free(&msg);
1800                 return; /* already known */
1801         }
1802
1803         dev = p2p_create_device(p2p, addr);
1804         if (dev == NULL) {
1805                 p2p_parse_free(&msg);
1806                 return;
1807         }
1808
1809         os_get_reltime(&dev->last_seen);
1810         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1811
1812         if (msg.listen_channel) {
1813                 os_memcpy(dev->country, msg.listen_channel, 3);
1814                 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
1815                                                        msg.listen_channel[4]);
1816         }
1817
1818         p2p_copy_wps_info(p2p, dev, 1, &msg);
1819
1820         if (msg.wfd_subelems) {
1821                 wpabuf_free(dev->info.wfd_subelems);
1822                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1823         }
1824
1825         p2p_parse_free(&msg);
1826
1827         p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
1828                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1829                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1830                 dev->info.group_capab, dev->info.device_name,
1831                 dev->listen_freq);
1832 }
1833
1834
1835 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1836                                                 const u8 *addr,
1837                                                 struct p2p_message *msg)
1838 {
1839         struct p2p_device *dev;
1840
1841         dev = p2p_get_device(p2p, addr);
1842         if (dev) {
1843                 os_get_reltime(&dev->last_seen);
1844                 return dev; /* already known */
1845         }
1846
1847         dev = p2p_create_device(p2p, addr);
1848         if (dev == NULL)
1849                 return NULL;
1850
1851         p2p_add_dev_info(p2p, addr, dev, msg);
1852
1853         return dev;
1854 }
1855
1856
1857 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1858 {
1859         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1860                 return 1;
1861         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1862             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1863             WPA_GET_BE16(&req_dev_type[6]) == 0)
1864                 return 1; /* Category match with wildcard OUI/sub-category */
1865         return 0;
1866 }
1867
1868
1869 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1870                         size_t num_req_dev_type)
1871 {
1872         size_t i;
1873         for (i = 0; i < num_req_dev_type; i++) {
1874                 if (dev_type_match(dev_type, req_dev_type[i]))
1875                         return 1;
1876         }
1877         return 0;
1878 }
1879
1880
1881 /**
1882  * p2p_match_dev_type - Match local device type with requested type
1883  * @p2p: P2P module context from p2p_init()
1884  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1885  * Returns: 1 on match, 0 on mismatch
1886  *
1887  * This function can be used to match the Requested Device Type attribute in
1888  * WPS IE with the local device types for deciding whether to reply to a Probe
1889  * Request frame.
1890  */
1891 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1892 {
1893         struct wps_parse_attr attr;
1894         size_t i;
1895
1896         if (wps_parse_msg(wps, &attr))
1897                 return 1; /* assume no Requested Device Type attributes */
1898
1899         if (attr.num_req_dev_type == 0)
1900                 return 1; /* no Requested Device Type attributes -> match */
1901
1902         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1903                                 attr.num_req_dev_type))
1904                 return 1; /* Own Primary Device Type matches */
1905
1906         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1907                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1908                                         attr.req_dev_type,
1909                                         attr.num_req_dev_type))
1910                 return 1; /* Own Secondary Device Type matches */
1911
1912         /* No matching device type found */
1913         return 0;
1914 }
1915
1916
1917 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1918 {
1919         struct wpabuf *buf;
1920         u8 *len;
1921         int pw_id = -1;
1922         size_t extra = 0;
1923
1924 #ifdef CONFIG_WIFI_DISPLAY
1925         if (p2p->wfd_ie_probe_resp)
1926                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
1927 #endif /* CONFIG_WIFI_DISPLAY */
1928
1929         buf = wpabuf_alloc(1000 + extra);
1930         if (buf == NULL)
1931                 return NULL;
1932
1933         if (p2p->go_neg_peer) {
1934                 /* Advertise immediate availability of WPS credential */
1935                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
1936         }
1937
1938         if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
1939                 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
1940                 wpabuf_free(buf);
1941                 return NULL;
1942         }
1943
1944 #ifdef CONFIG_WIFI_DISPLAY
1945         if (p2p->wfd_ie_probe_resp)
1946                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
1947 #endif /* CONFIG_WIFI_DISPLAY */
1948
1949         /* P2P IE */
1950         len = p2p_buf_add_ie_hdr(buf);
1951         p2p_buf_add_capability(buf, p2p->dev_capab &
1952                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
1953         if (p2p->ext_listen_interval)
1954                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1955                                               p2p->ext_listen_interval);
1956         p2p_buf_add_device_info(buf, p2p, NULL);
1957         p2p_buf_update_ie_hdr(buf, len);
1958
1959         return buf;
1960 }
1961
1962
1963 static enum p2p_probe_req_status
1964 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1965                 const u8 *bssid, const u8 *ie, size_t ie_len)
1966 {
1967         struct ieee802_11_elems elems;
1968         struct wpabuf *buf;
1969         struct ieee80211_mgmt *resp;
1970         struct p2p_message msg;
1971         struct wpabuf *ies;
1972
1973         if (!p2p->in_listen || !p2p->drv_in_listen) {
1974                 /* not in Listen state - ignore Probe Request */
1975                 return P2P_PREQ_NOT_LISTEN;
1976         }
1977
1978         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1979             ParseFailed) {
1980                 /* Ignore invalid Probe Request frames */
1981                 return P2P_PREQ_MALFORMED;
1982         }
1983
1984         if (elems.p2p == NULL) {
1985                 /* not a P2P probe - ignore it */
1986                 return P2P_PREQ_NOT_P2P;
1987         }
1988
1989         if (dst && !is_broadcast_ether_addr(dst) &&
1990             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
1991                 /* Not sent to the broadcast address or our P2P Device Address
1992                  */
1993                 return P2P_PREQ_NOT_PROCESSED;
1994         }
1995
1996         if (bssid && !is_broadcast_ether_addr(bssid)) {
1997                 /* Not sent to the Wildcard BSSID */
1998                 return P2P_PREQ_NOT_PROCESSED;
1999         }
2000
2001         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2002             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2003             0) {
2004                 /* not using P2P Wildcard SSID - ignore */
2005                 return P2P_PREQ_NOT_PROCESSED;
2006         }
2007
2008         if (supp_rates_11b_only(&elems)) {
2009                 /* Indicates support for 11b rates only */
2010                 return P2P_PREQ_NOT_P2P;
2011         }
2012
2013         os_memset(&msg, 0, sizeof(msg));
2014         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2015                 /* Could not parse P2P attributes */
2016                 return P2P_PREQ_NOT_P2P;
2017         }
2018
2019         if (msg.device_id &&
2020             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2021                 /* Device ID did not match */
2022                 p2p_parse_free(&msg);
2023                 return P2P_PREQ_NOT_PROCESSED;
2024         }
2025
2026         /* Check Requested Device Type match */
2027         if (msg.wps_attributes &&
2028             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2029                 /* No match with Requested Device Type */
2030                 p2p_parse_free(&msg);
2031                 return P2P_PREQ_NOT_PROCESSED;
2032         }
2033         p2p_parse_free(&msg);
2034
2035         if (!p2p->cfg->send_probe_resp) {
2036                 /* Response generated elsewhere */
2037                 return P2P_PREQ_NOT_PROCESSED;
2038         }
2039
2040         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2041
2042         /*
2043          * We do not really have a specific BSS that this frame is advertising,
2044          * so build a frame that has some information in valid format. This is
2045          * really only used for discovery purposes, not to learn exact BSS
2046          * parameters.
2047          */
2048         ies = p2p_build_probe_resp_ies(p2p);
2049         if (ies == NULL)
2050                 return P2P_PREQ_NOT_PROCESSED;
2051
2052         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2053         if (buf == NULL) {
2054                 wpabuf_free(ies);
2055                 return P2P_PREQ_NOT_PROCESSED;
2056         }
2057
2058         resp = NULL;
2059         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2060
2061         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2062                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2063         os_memcpy(resp->da, addr, ETH_ALEN);
2064         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2065         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2066         resp->u.probe_resp.beacon_int = host_to_le16(100);
2067         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2068         resp->u.probe_resp.capab_info =
2069                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2070                              WLAN_CAPABILITY_PRIVACY |
2071                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
2072
2073         wpabuf_put_u8(buf, WLAN_EID_SSID);
2074         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2075         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2076
2077         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2078         wpabuf_put_u8(buf, 8);
2079         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2080         wpabuf_put_u8(buf, 90 / 5);
2081         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2082         wpabuf_put_u8(buf, 180 / 5);
2083         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2084         wpabuf_put_u8(buf, 360 / 5);
2085         wpabuf_put_u8(buf, 480 / 5);
2086         wpabuf_put_u8(buf, 540 / 5);
2087
2088         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2089         wpabuf_put_u8(buf, 1);
2090         wpabuf_put_u8(buf, p2p->cfg->channel);
2091
2092         wpabuf_put_buf(buf, ies);
2093         wpabuf_free(ies);
2094
2095         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2096
2097         wpabuf_free(buf);
2098
2099         return P2P_PREQ_NOT_PROCESSED;
2100 }
2101
2102
2103 enum p2p_probe_req_status
2104 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2105                  const u8 *bssid, const u8 *ie, size_t ie_len)
2106 {
2107         enum p2p_probe_req_status res;
2108
2109         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2110
2111         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2112
2113         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2114             p2p->go_neg_peer &&
2115             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2116             == 0 &&
2117             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2118                 /* Received a Probe Request from GO Negotiation peer */
2119                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2120                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2121                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2122                 return P2P_PREQ_PROCESSED;
2123         }
2124
2125         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2126             p2p->invite_peer &&
2127             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2128             == 0) {
2129                 /* Received a Probe Request from Invite peer */
2130                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2131                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2132                 return P2P_PREQ_PROCESSED;
2133         }
2134
2135         return res;
2136 }
2137
2138
2139 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2140                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2141 {
2142         struct wpabuf *tmp;
2143         u8 *lpos;
2144         size_t tmplen;
2145         int res;
2146         u8 group_capab;
2147
2148         if (p2p_ie == NULL)
2149                 return 0; /* WLAN AP is not a P2P manager */
2150
2151         /*
2152          * (Re)Association Request - P2P IE
2153          * P2P Capability attribute (shall be present)
2154          * P2P Interface attribute (present if concurrent device and
2155          *      P2P Management is enabled)
2156          */
2157         tmp = wpabuf_alloc(200);
2158         if (tmp == NULL)
2159                 return -1;
2160
2161         lpos = p2p_buf_add_ie_hdr(tmp);
2162         group_capab = 0;
2163         if (p2p->num_groups > 0) {
2164                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2165                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2166                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2167                     p2p->cross_connect)
2168                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2169         }
2170         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2171         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2172             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2173                 p2p_buf_add_p2p_interface(tmp, p2p);
2174         p2p_buf_update_ie_hdr(tmp, lpos);
2175
2176         tmplen = wpabuf_len(tmp);
2177         if (tmplen > len)
2178                 res = -1;
2179         else {
2180                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2181                 res = tmplen;
2182         }
2183         wpabuf_free(tmp);
2184
2185         return res;
2186 }
2187
2188
2189 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2190                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2191 {
2192         struct wpabuf *tmp;
2193         u8 *lpos;
2194         struct p2p_device *peer;
2195         size_t tmplen;
2196         int res;
2197         size_t extra = 0;
2198
2199         if (!p2p_group)
2200                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2201
2202 #ifdef CONFIG_WIFI_DISPLAY
2203         if (p2p->wfd_ie_assoc_req)
2204                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2205 #endif /* CONFIG_WIFI_DISPLAY */
2206
2207         /*
2208          * (Re)Association Request - P2P IE
2209          * P2P Capability attribute (shall be present)
2210          * Extended Listen Timing (may be present)
2211          * P2P Device Info attribute (shall be present)
2212          */
2213         tmp = wpabuf_alloc(200 + extra);
2214         if (tmp == NULL)
2215                 return -1;
2216
2217 #ifdef CONFIG_WIFI_DISPLAY
2218         if (p2p->wfd_ie_assoc_req)
2219                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2220 #endif /* CONFIG_WIFI_DISPLAY */
2221
2222         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2223
2224         lpos = p2p_buf_add_ie_hdr(tmp);
2225         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2226         if (p2p->ext_listen_interval)
2227                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2228                                               p2p->ext_listen_interval);
2229         p2p_buf_add_device_info(tmp, p2p, peer);
2230         p2p_buf_update_ie_hdr(tmp, lpos);
2231
2232         tmplen = wpabuf_len(tmp);
2233         if (tmplen > len)
2234                 res = -1;
2235         else {
2236                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2237                 res = tmplen;
2238         }
2239         wpabuf_free(tmp);
2240
2241         return res;
2242 }
2243
2244
2245 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2246 {
2247         struct wpabuf *p2p_ie;
2248         int ret;
2249
2250         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2251         if (p2p_ie == NULL)
2252                 return 0;
2253
2254         ret = p2p_attr_text(p2p_ie, buf, end);
2255         wpabuf_free(p2p_ie);
2256         return ret;
2257 }
2258
2259
2260 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2261 {
2262         struct p2p_message msg;
2263
2264         os_memset(&msg, 0, sizeof(msg));
2265         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2266                 return -1;
2267
2268         if (msg.p2p_device_addr) {
2269                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2270                 return 0;
2271         } else if (msg.device_id) {
2272                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2273                 return 0;
2274         }
2275         return -1;
2276 }
2277
2278
2279 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2280 {
2281         struct wpabuf *p2p_ie;
2282         int ret;
2283
2284         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2285                                              P2P_IE_VENDOR_TYPE);
2286         if (p2p_ie == NULL)
2287                 return -1;
2288         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2289         wpabuf_free(p2p_ie);
2290         return ret;
2291 }
2292
2293
2294 static void p2p_clear_go_neg(struct p2p_data *p2p)
2295 {
2296         p2p->go_neg_peer = NULL;
2297         p2p_clear_timeout(p2p);
2298         p2p_set_state(p2p, P2P_IDLE);
2299 }
2300
2301
2302 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2303 {
2304         if (p2p->go_neg_peer == NULL) {
2305                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2306                 return; /* No pending Group Formation */
2307         }
2308
2309         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2310             0) {
2311                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2312                         MACSTR " (GO Negotiation peer " MACSTR ")",
2313                         MAC2STR(mac_addr),
2314                         MAC2STR(p2p->go_neg_peer->intended_addr));
2315                 return; /* Ignore unexpected peer address */
2316         }
2317
2318         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2319                 MAC2STR(mac_addr));
2320
2321         p2p_clear_go_neg(p2p);
2322 }
2323
2324
2325 void p2p_group_formation_failed(struct p2p_data *p2p)
2326 {
2327         if (p2p->go_neg_peer == NULL) {
2328                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2329                 return; /* No pending Group Formation */
2330         }
2331
2332         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2333                 MAC2STR(p2p->go_neg_peer->intended_addr));
2334
2335         p2p_clear_go_neg(p2p);
2336 }
2337
2338
2339 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2340 {
2341         struct p2p_data *p2p;
2342
2343         if (cfg->max_peers < 1)
2344                 return NULL;
2345
2346         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2347         if (p2p == NULL)
2348                 return NULL;
2349         p2p->cfg = (struct p2p_config *) (p2p + 1);
2350         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2351         if (cfg->dev_name)
2352                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2353         if (cfg->manufacturer)
2354                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2355         if (cfg->model_name)
2356                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2357         if (cfg->model_number)
2358                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2359         if (cfg->serial_number)
2360                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2361         if (cfg->pref_chan) {
2362                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2363                                                 sizeof(struct p2p_channel));
2364                 if (p2p->cfg->pref_chan) {
2365                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2366                                   cfg->num_pref_chan *
2367                                   sizeof(struct p2p_channel));
2368                 } else
2369                         p2p->cfg->num_pref_chan = 0;
2370         }
2371
2372         p2p->min_disc_int = 1;
2373         p2p->max_disc_int = 3;
2374         p2p->max_disc_tu = -1;
2375
2376         os_get_random(&p2p->next_tie_breaker, 1);
2377         p2p->next_tie_breaker &= 0x01;
2378         if (cfg->sd_request)
2379                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2380         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2381         if (cfg->concurrent_operations)
2382                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2383         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2384
2385         dl_list_init(&p2p->devices);
2386
2387         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2388                                p2p_expiration_timeout, p2p, NULL);
2389
2390         p2p->go_timeout = 100;
2391         p2p->client_timeout = 20;
2392
2393         p2p_dbg(p2p, "initialized");
2394         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2395         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2396
2397         return p2p;
2398 }
2399
2400
2401 void p2p_deinit(struct p2p_data *p2p)
2402 {
2403 #ifdef CONFIG_WIFI_DISPLAY
2404         wpabuf_free(p2p->wfd_ie_beacon);
2405         wpabuf_free(p2p->wfd_ie_probe_req);
2406         wpabuf_free(p2p->wfd_ie_probe_resp);
2407         wpabuf_free(p2p->wfd_ie_assoc_req);
2408         wpabuf_free(p2p->wfd_ie_invitation);
2409         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2410         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2411         wpabuf_free(p2p->wfd_ie_go_neg);
2412         wpabuf_free(p2p->wfd_dev_info);
2413         wpabuf_free(p2p->wfd_assoc_bssid);
2414         wpabuf_free(p2p->wfd_coupled_sink_info);
2415 #endif /* CONFIG_WIFI_DISPLAY */
2416
2417         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2418         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2419         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2420         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2421         p2p_flush(p2p);
2422         p2p_free_req_dev_types(p2p);
2423         os_free(p2p->cfg->dev_name);
2424         os_free(p2p->cfg->manufacturer);
2425         os_free(p2p->cfg->model_name);
2426         os_free(p2p->cfg->model_number);
2427         os_free(p2p->cfg->serial_number);
2428         os_free(p2p->cfg->pref_chan);
2429         os_free(p2p->groups);
2430         wpabuf_free(p2p->sd_resp);
2431         os_free(p2p->after_scan_tx);
2432         p2p_remove_wps_vendor_extensions(p2p);
2433         os_free(p2p->no_go_freq.range);
2434         os_free(p2p);
2435 }
2436
2437
2438 void p2p_flush(struct p2p_data *p2p)
2439 {
2440         struct p2p_device *dev, *prev;
2441         p2p_stop_find(p2p);
2442         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2443                               list) {
2444                 dl_list_del(&dev->list);
2445                 p2p_device_free(p2p, dev);
2446         }
2447         p2p_free_sd_queries(p2p);
2448         os_free(p2p->after_scan_tx);
2449         p2p->after_scan_tx = NULL;
2450 }
2451
2452
2453 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2454 {
2455         struct p2p_device *dev;
2456
2457         dev = p2p_get_device(p2p, addr);
2458         if (dev == NULL)
2459                 return -1;
2460
2461         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2462
2463         if (p2p->go_neg_peer == dev)
2464                 p2p->go_neg_peer = NULL;
2465
2466         dev->wps_method = WPS_NOT_READY;
2467         dev->oob_pw_id = 0;
2468         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2469         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2470
2471         /* Check if after_scan_tx is for this peer. If so free it */
2472         if (p2p->after_scan_tx &&
2473             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2474                 os_free(p2p->after_scan_tx);
2475                 p2p->after_scan_tx = NULL;
2476         }
2477
2478         return 0;
2479 }
2480
2481
2482 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2483 {
2484         os_free(p2p->cfg->dev_name);
2485         if (dev_name) {
2486                 p2p->cfg->dev_name = os_strdup(dev_name);
2487                 if (p2p->cfg->dev_name == NULL)
2488                         return -1;
2489         } else
2490                 p2p->cfg->dev_name = NULL;
2491         return 0;
2492 }
2493
2494
2495 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2496 {
2497         os_free(p2p->cfg->manufacturer);
2498         p2p->cfg->manufacturer = NULL;
2499         if (manufacturer) {
2500                 p2p->cfg->manufacturer = os_strdup(manufacturer);
2501                 if (p2p->cfg->manufacturer == NULL)
2502                         return -1;
2503         }
2504
2505         return 0;
2506 }
2507
2508
2509 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2510 {
2511         os_free(p2p->cfg->model_name);
2512         p2p->cfg->model_name = NULL;
2513         if (model_name) {
2514                 p2p->cfg->model_name = os_strdup(model_name);
2515                 if (p2p->cfg->model_name == NULL)
2516                         return -1;
2517         }
2518
2519         return 0;
2520 }
2521
2522
2523 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2524 {
2525         os_free(p2p->cfg->model_number);
2526         p2p->cfg->model_number = NULL;
2527         if (model_number) {
2528                 p2p->cfg->model_number = os_strdup(model_number);
2529                 if (p2p->cfg->model_number == NULL)
2530                         return -1;
2531         }
2532
2533         return 0;
2534 }
2535
2536
2537 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2538 {
2539         os_free(p2p->cfg->serial_number);
2540         p2p->cfg->serial_number = NULL;
2541         if (serial_number) {
2542                 p2p->cfg->serial_number = os_strdup(serial_number);
2543                 if (p2p->cfg->serial_number == NULL)
2544                         return -1;
2545         }
2546
2547         return 0;
2548 }
2549
2550
2551 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2552 {
2553         p2p->cfg->config_methods = config_methods;
2554 }
2555
2556
2557 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2558 {
2559         os_memcpy(p2p->cfg->uuid, uuid, 16);
2560 }
2561
2562
2563 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2564 {
2565         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2566         return 0;
2567 }
2568
2569
2570 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2571                           size_t num_dev_types)
2572 {
2573         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2574                 num_dev_types = P2P_SEC_DEVICE_TYPES;
2575         p2p->cfg->num_sec_dev_types = num_dev_types;
2576         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2577         return 0;
2578 }
2579
2580
2581 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2582 {
2583         int i;
2584
2585         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2586                 wpabuf_free(p2p->wps_vendor_ext[i]);
2587                 p2p->wps_vendor_ext[i] = NULL;
2588         }
2589 }
2590
2591
2592 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2593                                  const struct wpabuf *vendor_ext)
2594 {
2595         int i;
2596
2597         if (vendor_ext == NULL)
2598                 return -1;
2599
2600         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2601                 if (p2p->wps_vendor_ext[i] == NULL)
2602                         break;
2603         }
2604         if (i >= P2P_MAX_WPS_VENDOR_EXT)
2605                 return -1;
2606
2607         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2608         if (p2p->wps_vendor_ext[i] == NULL)
2609                 return -1;
2610
2611         return 0;
2612 }
2613
2614
2615 int p2p_set_country(struct p2p_data *p2p, const char *country)
2616 {
2617         os_memcpy(p2p->cfg->country, country, 3);
2618         return 0;
2619 }
2620
2621
2622 void p2p_continue_find(struct p2p_data *p2p)
2623 {
2624         struct p2p_device *dev;
2625         p2p_set_state(p2p, P2P_SEARCH);
2626         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2627                 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2628                         if (p2p_start_sd(p2p, dev) == 0)
2629                                 return;
2630                         else
2631                                 break;
2632                 } else if (dev->req_config_methods &&
2633                            !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2634                         p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2635                                 MACSTR " (config methods 0x%x)",
2636                                 MAC2STR(dev->info.p2p_device_addr),
2637                                 dev->req_config_methods);
2638                         if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
2639                                 return;
2640                 }
2641         }
2642
2643         p2p_listen_in_find(p2p, 1);
2644 }
2645
2646
2647 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2648 {
2649         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
2650                 success);
2651         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2652
2653         if (!success) {
2654                 if (p2p->sd_peer) {
2655                         p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2656                         p2p->sd_peer = NULL;
2657                 }
2658                 p2p_continue_find(p2p);
2659                 return;
2660         }
2661
2662         if (p2p->sd_peer == NULL) {
2663                 p2p_dbg(p2p, "No SD peer entry known");
2664                 p2p_continue_find(p2p);
2665                 return;
2666         }
2667
2668         /* Wait for response from the peer */
2669         p2p_set_state(p2p, P2P_SD_DURING_FIND);
2670         p2p_set_timeout(p2p, 0, 200000);
2671 }
2672
2673
2674 /**
2675  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2676  * @p2p: P2P module context from p2p_init()
2677  */
2678 static void p2p_retry_pd(struct p2p_data *p2p)
2679 {
2680         struct p2p_device *dev;
2681
2682         if (p2p->state != P2P_IDLE)
2683                 return;
2684
2685         /*
2686          * Retry the prov disc req attempt only for the peer that the user had
2687          * requested.
2688          */
2689
2690         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2691                 if (os_memcmp(p2p->pending_pd_devaddr,
2692                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
2693                         continue;
2694                 if (!dev->req_config_methods)
2695                         continue;
2696
2697                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2698                         MACSTR " (config methods 0x%x)",
2699                         MAC2STR(dev->info.p2p_device_addr),
2700                         dev->req_config_methods);
2701                 p2p_send_prov_disc_req(p2p, dev,
2702                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
2703                                        p2p->pd_force_freq);
2704                 return;
2705         }
2706 }
2707
2708
2709 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2710 {
2711         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
2712                 success);
2713
2714         /*
2715          * Postpone resetting the pending action state till after we actually
2716          * time out. This allows us to take some action like notifying any
2717          * interested parties about no response to the request.
2718          *
2719          * When the timer (below) goes off we check in IDLE, SEARCH, or
2720          * LISTEN_ONLY state, which are the only allowed states to issue a PD
2721          * requests in, if this was still pending and then raise notification.
2722          */
2723
2724         if (!success) {
2725                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2726
2727                 if (p2p->user_initiated_pd &&
2728                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2729                 {
2730                         /* Retry request from timeout to avoid busy loops */
2731                         p2p->pending_action_state = P2P_PENDING_PD;
2732                         p2p_set_timeout(p2p, 0, 50000);
2733                 } else if (p2p->state != P2P_IDLE)
2734                         p2p_continue_find(p2p);
2735                 else if (p2p->user_initiated_pd) {
2736                         p2p->pending_action_state = P2P_PENDING_PD;
2737                         p2p_set_timeout(p2p, 0, 300000);
2738                 }
2739                 return;
2740         }
2741
2742         /*
2743          * This postponing, of resetting pending_action_state, needs to be
2744          * done only for user initiated PD requests and not internal ones.
2745          */
2746         if (p2p->user_initiated_pd)
2747                 p2p->pending_action_state = P2P_PENDING_PD;
2748         else
2749                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2750
2751         /* Wait for response from the peer */
2752         if (p2p->state == P2P_SEARCH)
2753                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2754         p2p_set_timeout(p2p, 0, 200000);
2755 }
2756
2757
2758 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2759                          struct os_reltime *rx_time, int level, const u8 *ies,
2760                          size_t ies_len)
2761 {
2762         if (os_reltime_before(rx_time, &p2p->find_start)) {
2763                 /*
2764                  * The driver may have cached (e.g., in cfg80211 BSS table) the
2765                  * scan results for relatively long time. To avoid reporting
2766                  * stale information, update P2P peers only based on results
2767                  * that have based on frames received after the last p2p_find
2768                  * operation was started.
2769                  */
2770                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
2771                         " (rx_time=%u.%06u)",
2772                         MAC2STR(bssid), (unsigned int) rx_time->sec,
2773                         (unsigned int) rx_time->usec);
2774                 return 0;
2775         }
2776
2777         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
2778
2779         return 0;
2780 }
2781
2782
2783 void p2p_scan_res_handled(struct p2p_data *p2p)
2784 {
2785         if (!p2p->p2p_scan_running) {
2786                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
2787         }
2788         p2p->p2p_scan_running = 0;
2789         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2790
2791         if (p2p_run_after_scan(p2p))
2792                 return;
2793         if (p2p->state == P2P_SEARCH)
2794                 p2p_continue_find(p2p);
2795 }
2796
2797
2798 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
2799 {
2800         u8 *len;
2801
2802 #ifdef CONFIG_WIFI_DISPLAY
2803         if (p2p->wfd_ie_probe_req)
2804                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2805 #endif /* CONFIG_WIFI_DISPLAY */
2806
2807         len = p2p_buf_add_ie_hdr(ies);
2808         p2p_buf_add_capability(ies, p2p->dev_capab &
2809                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2810         if (dev_id)
2811                 p2p_buf_add_device_id(ies, dev_id);
2812         if (p2p->cfg->reg_class && p2p->cfg->channel)
2813                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2814                                            p2p->cfg->reg_class,
2815                                            p2p->cfg->channel);
2816         if (p2p->ext_listen_interval)
2817                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2818                                               p2p->ext_listen_interval);
2819         /* TODO: p2p_buf_add_operating_channel() if GO */
2820         p2p_buf_update_ie_hdr(ies, len);
2821 }
2822
2823
2824 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2825 {
2826         size_t len = 100;
2827
2828 #ifdef CONFIG_WIFI_DISPLAY
2829         if (p2p && p2p->wfd_ie_probe_req)
2830                 len += wpabuf_len(p2p->wfd_ie_probe_req);
2831 #endif /* CONFIG_WIFI_DISPLAY */
2832
2833         return len;
2834 }
2835
2836
2837 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2838 {
2839         return p2p_attr_text(p2p_ie, buf, end);
2840 }
2841
2842
2843 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2844 {
2845         struct p2p_device *dev = p2p->go_neg_peer;
2846         int timeout;
2847
2848         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
2849
2850         if (dev == NULL) {
2851                 p2p_dbg(p2p, "No pending GO Negotiation");
2852                 return;
2853         }
2854
2855         if (success) {
2856                 if (dev->flags & P2P_DEV_USER_REJECTED) {
2857                         p2p_set_state(p2p, P2P_IDLE);
2858                         return;
2859                 }
2860         } else if (dev->go_neg_req_sent) {
2861                 /* Cancel the increment from p2p_connect_send() on failure */
2862                 dev->go_neg_req_sent--;
2863         }
2864
2865         if (!success &&
2866             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2867             !is_zero_ether_addr(dev->member_in_go_dev)) {
2868                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
2869                         MAC2STR(dev->info.p2p_device_addr));
2870                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2871                 p2p_send_dev_disc_req(p2p, dev);
2872                 return;
2873         }
2874
2875         /*
2876          * Use P2P find, if needed, to find the other device from its listen
2877          * channel.
2878          */
2879         p2p_set_state(p2p, P2P_CONNECT);
2880         timeout = success ? 500000 : 100000;
2881         if (!success && p2p->go_neg_peer &&
2882             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
2883                 unsigned int r;
2884                 /*
2885                  * Peer is expected to wait our response and we will skip the
2886                  * listen phase. Add some randomness to the wait time here to
2887                  * make it less likely to hit cases where we could end up in
2888                  * sync with peer not listening.
2889                  */
2890                 os_get_random((u8 *) &r, sizeof(r));
2891                 timeout += r % 100000;
2892         }
2893         p2p_set_timeout(p2p, 0, timeout);
2894 }
2895
2896
2897 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2898 {
2899         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
2900                 success);
2901         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2902                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
2903                 return;
2904         }
2905         p2p_set_state(p2p, P2P_CONNECT);
2906         p2p_set_timeout(p2p, 0, 500000);
2907 }
2908
2909
2910 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
2911                                        const u8 *addr)
2912 {
2913         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
2914         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2915                 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2916                                   p2p->go_neg_peer->status);
2917         } else if (success) {
2918                 struct p2p_device *dev;
2919                 dev = p2p_get_device(p2p, addr);
2920                 if (dev &&
2921                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
2922                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
2923         }
2924 }
2925
2926
2927 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2928                                enum p2p_send_action_result result)
2929 {
2930         struct p2p_device *dev;
2931
2932         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
2933         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2934         if (result == P2P_SEND_ACTION_FAILED) {
2935                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2936                 return;
2937         }
2938         if (result == P2P_SEND_ACTION_NO_ACK) {
2939                 /*
2940                  * It looks like the TX status for GO Negotiation Confirm is
2941                  * often showing failure even when the peer has actually
2942                  * received the frame. Since the peer may change channels
2943                  * immediately after having received the frame, we may not see
2944                  * an Ack for retries, so just dropping a single frame may
2945                  * trigger this. To allow the group formation to succeed if the
2946                  * peer did indeed receive the frame, continue regardless of
2947                  * the TX status.
2948                  */
2949                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
2950         }
2951
2952         dev = p2p->go_neg_peer;
2953         if (dev == NULL)
2954                 return;
2955
2956         p2p_go_complete(p2p, dev);
2957 }
2958
2959
2960 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
2961                         const u8 *src, const u8 *bssid,
2962                         enum p2p_send_action_result result)
2963 {
2964         enum p2p_pending_action_state state;
2965         int success;
2966
2967         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
2968                 " src=" MACSTR " bssid=" MACSTR " result=%d",
2969                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
2970                 MAC2STR(bssid), result);
2971         success = result == P2P_SEND_ACTION_SUCCESS;
2972         state = p2p->pending_action_state;
2973         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2974         switch (state) {
2975         case P2P_NO_PENDING_ACTION:
2976                 if (p2p->after_scan_tx_in_progress) {
2977                         p2p->after_scan_tx_in_progress = 0;
2978                         if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
2979                             p2p_run_after_scan(p2p))
2980                                 break;
2981                         if (p2p->state == P2P_SEARCH) {
2982                                 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
2983                                 p2p_continue_find(p2p);
2984                         }
2985                 }
2986                 break;
2987         case P2P_PENDING_GO_NEG_REQUEST:
2988                 p2p_go_neg_req_cb(p2p, success);
2989                 break;
2990         case P2P_PENDING_GO_NEG_RESPONSE:
2991                 p2p_go_neg_resp_cb(p2p, success);
2992                 break;
2993         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
2994                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
2995                 break;
2996         case P2P_PENDING_GO_NEG_CONFIRM:
2997                 p2p_go_neg_conf_cb(p2p, result);
2998                 break;
2999         case P2P_PENDING_SD:
3000                 p2p_sd_cb(p2p, success);
3001                 break;
3002         case P2P_PENDING_PD:
3003                 p2p_prov_disc_cb(p2p, success);
3004                 break;
3005         case P2P_PENDING_INVITATION_REQUEST:
3006                 p2p_invitation_req_cb(p2p, success);
3007                 break;
3008         case P2P_PENDING_INVITATION_RESPONSE:
3009                 p2p_invitation_resp_cb(p2p, success);
3010                 break;
3011         case P2P_PENDING_DEV_DISC_REQUEST:
3012                 p2p_dev_disc_req_cb(p2p, success);
3013                 break;
3014         case P2P_PENDING_DEV_DISC_RESPONSE:
3015                 p2p_dev_disc_resp_cb(p2p, success);
3016                 break;
3017         case P2P_PENDING_GO_DISC_REQ:
3018                 p2p_go_disc_req_cb(p2p, success);
3019                 break;
3020         }
3021
3022         p2p->after_scan_tx_in_progress = 0;
3023 }
3024
3025
3026 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3027                    unsigned int duration)
3028 {
3029         if (freq == p2p->pending_client_disc_freq) {
3030                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3031                 p2p->pending_client_disc_freq = 0;
3032                 return;
3033         }
3034
3035         if (freq != p2p->pending_listen_freq) {
3036                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3037                         freq, duration, p2p->pending_listen_freq);
3038                 return;
3039         }
3040
3041         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3042                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3043                 p2p->pending_listen_freq);
3044         p2p->in_listen = 1;
3045         p2p->drv_in_listen = freq;
3046         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3047                 /*
3048                  * Add 20 msec extra wait to avoid race condition with driver
3049                  * remain-on-channel end event, i.e., give driver more time to
3050                  * complete the operation before our timeout expires.
3051                  */
3052                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3053                                 p2p->pending_listen_usec + 20000);
3054         }
3055
3056         p2p->pending_listen_freq = 0;
3057 }
3058
3059
3060 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3061 {
3062         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3063         p2p->drv_in_listen = 0;
3064         if (p2p->in_listen)
3065                 return 0; /* Internal timeout will trigger the next step */
3066
3067         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3068                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3069                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3070                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3071                         return 0;
3072                 }
3073
3074                 p2p_set_state(p2p, P2P_CONNECT);
3075                 p2p_connect_send(p2p, p2p->go_neg_peer);
3076                 return 1;
3077         } else if (p2p->state == P2P_SEARCH) {
3078                 if (p2p->p2p_scan_running) {
3079                          /*
3080                           * Search is already in progress. This can happen if
3081                           * an Action frame RX is reported immediately after
3082                           * the end of a remain-on-channel operation and the
3083                           * response frame to that is sent using an offchannel
3084                           * operation while in p2p_find. Avoid an attempt to
3085                           * restart a scan here.
3086                           */
3087                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3088                         return 1;
3089                 }
3090                 if (p2p->pending_listen_freq) {
3091                         /*
3092                          * Better wait a bit if the driver is unable to start
3093                          * offchannel operation for some reason. p2p_search()
3094                          * will be started from internal timeout.
3095                          */
3096                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3097                         p2p_set_timeout(p2p, 0, 100000);
3098                         return 1;
3099                 }
3100                 if (p2p->search_delay) {
3101                         p2p_dbg(p2p, "Delay search operation by %u ms",
3102                                 p2p->search_delay);
3103                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3104                                         (p2p->search_delay % 1000) * 1000);
3105                         return 1;
3106                 }
3107                 p2p_search(p2p);
3108                 return 1;
3109         }
3110
3111         return 0;
3112 }
3113
3114
3115 static void p2p_timeout_connect(struct p2p_data *p2p)
3116 {
3117         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3118         if (p2p->go_neg_peer &&
3119             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3120                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3121                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3122                 return;
3123         }
3124         if (p2p->go_neg_peer &&
3125             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3126             p2p->go_neg_peer->connect_reqs < 120) {
3127                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3128                 p2p_connect_send(p2p, p2p->go_neg_peer);
3129                 return;
3130         }
3131         if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3132                 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3133                 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3134                 p2p_set_timeout(p2p, 0, 30000);
3135                 return;
3136         }
3137         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3138         p2p_listen_in_find(p2p, 0);
3139 }
3140
3141
3142 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3143 {
3144         if (p2p->go_neg_peer) {
3145                 if (p2p->drv_in_listen) {
3146                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3147                         return;
3148                 }
3149
3150                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3151                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3152                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3153                         return;
3154                 }
3155
3156                 p2p_set_state(p2p, P2P_CONNECT);
3157                 p2p_connect_send(p2p, p2p->go_neg_peer);
3158         } else
3159                 p2p_set_state(p2p, P2P_IDLE);
3160 }
3161
3162
3163 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3164 {
3165         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3166
3167         if (p2p->cfg->is_concurrent_session_active &&
3168             p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3169                 p2p_set_timeout(p2p, 0, 500000);
3170         else
3171                 p2p_set_timeout(p2p, 0, 200000);
3172 }
3173
3174
3175 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3176 {
3177         struct p2p_device *dev = p2p->go_neg_peer;
3178
3179         if (dev == NULL) {
3180                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3181                 return;
3182         }
3183
3184         dev->wait_count++;
3185         if (dev->wait_count >= 120) {
3186                 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation");
3187                 p2p_go_neg_failed(p2p, dev, -1);
3188                 return;
3189         }
3190
3191         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3192         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3193         p2p_listen_in_find(p2p, 0);
3194 }
3195
3196
3197 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3198 {
3199         p2p_dbg(p2p, "Service Discovery Query timeout");
3200         if (p2p->sd_peer) {
3201                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3202                 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
3203                 p2p->sd_peer = NULL;
3204         }
3205         p2p_continue_find(p2p);
3206 }
3207
3208
3209 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3210 {
3211         p2p_dbg(p2p, "Provision Discovery Request timeout");
3212         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3213         p2p_continue_find(p2p);
3214 }
3215
3216
3217 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3218 {
3219         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3220
3221         /*
3222          * For user initiated PD requests that we have not gotten any responses
3223          * for while in IDLE state, we retry them a couple of times before
3224          * giving up.
3225          */
3226         if (!p2p->user_initiated_pd)
3227                 return;
3228
3229         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3230
3231         if (p2p->pd_retries) {
3232                 p2p->pd_retries--;
3233                 p2p_retry_pd(p2p);
3234         } else {
3235                 struct p2p_device *dev;
3236                 int for_join = 0;
3237
3238                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3239                         if (os_memcmp(p2p->pending_pd_devaddr,
3240                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
3241                                 continue;
3242                         if (dev->req_config_methods &&
3243                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
3244                                 for_join = 1;
3245                 }
3246
3247                 if (p2p->cfg->prov_disc_fail)
3248                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3249                                                  p2p->pending_pd_devaddr,
3250                                                  for_join ?
3251                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
3252                                                  P2P_PROV_DISC_TIMEOUT);
3253                 p2p_reset_pending_pd(p2p);
3254         }
3255 }
3256
3257
3258 static void p2p_timeout_invite(struct p2p_data *p2p)
3259 {
3260         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3261         p2p_set_state(p2p, P2P_INVITE_LISTEN);
3262         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3263                 /*
3264                  * Better remain on operating channel instead of listen channel
3265                  * when running a group.
3266                  */
3267                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3268                 p2p_set_timeout(p2p, 0, 100000);
3269                 return;
3270         }
3271         p2p_listen_in_find(p2p, 0);
3272 }
3273
3274
3275 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3276 {
3277         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3278                 p2p_set_state(p2p, P2P_INVITE);
3279                 p2p_invite_send(p2p, p2p->invite_peer,
3280                                 p2p->invite_go_dev_addr);
3281         } else {
3282                 if (p2p->invite_peer) {
3283                         p2p_dbg(p2p, "Invitation Request retry limit reached");
3284                         if (p2p->cfg->invitation_result)
3285                                 p2p->cfg->invitation_result(
3286                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
3287                                         p2p->invite_peer->info.p2p_device_addr,
3288                                         0);
3289                 }
3290                 p2p_set_state(p2p, P2P_IDLE);
3291         }
3292 }
3293
3294
3295 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3296 {
3297         struct p2p_data *p2p = eloop_ctx;
3298
3299         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3300
3301         p2p->in_listen = 0;
3302
3303         switch (p2p->state) {
3304         case P2P_IDLE:
3305                 /* Check if we timed out waiting for PD req */
3306                 if (p2p->pending_action_state == P2P_PENDING_PD)
3307                         p2p_timeout_prov_disc_req(p2p);
3308                 break;
3309         case P2P_SEARCH:
3310                 /* Check if we timed out waiting for PD req */
3311                 if (p2p->pending_action_state == P2P_PENDING_PD)
3312                         p2p_timeout_prov_disc_req(p2p);
3313                 if (p2p->search_delay && !p2p->in_search_delay) {
3314                         p2p_dbg(p2p, "Delay search operation by %u ms",
3315                                 p2p->search_delay);
3316                         p2p->in_search_delay = 1;
3317                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3318                                         (p2p->search_delay % 1000) * 1000);
3319                         break;
3320                 }
3321                 p2p->in_search_delay = 0;
3322                 p2p_search(p2p);
3323                 break;
3324         case P2P_CONNECT:
3325                 p2p_timeout_connect(p2p);
3326                 break;
3327         case P2P_CONNECT_LISTEN:
3328                 p2p_timeout_connect_listen(p2p);
3329                 break;
3330         case P2P_GO_NEG:
3331                 break;
3332         case P2P_LISTEN_ONLY:
3333                 /* Check if we timed out waiting for PD req */
3334                 if (p2p->pending_action_state == P2P_PENDING_PD)
3335                         p2p_timeout_prov_disc_req(p2p);
3336
3337                 if (p2p->ext_listen_only) {
3338                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3339                         p2p->ext_listen_only = 0;
3340                         p2p_set_state(p2p, P2P_IDLE);
3341                 }
3342                 break;
3343         case P2P_WAIT_PEER_CONNECT:
3344                 p2p_timeout_wait_peer_connect(p2p);
3345                 break;
3346         case P2P_WAIT_PEER_IDLE:
3347                 p2p_timeout_wait_peer_idle(p2p);
3348                 break;
3349         case P2P_SD_DURING_FIND:
3350                 p2p_timeout_sd_during_find(p2p);
3351                 break;
3352         case P2P_PROVISIONING:
3353                 break;
3354         case P2P_PD_DURING_FIND:
3355                 p2p_timeout_prov_disc_during_find(p2p);
3356                 break;
3357         case P2P_INVITE:
3358                 p2p_timeout_invite(p2p);
3359                 break;
3360         case P2P_INVITE_LISTEN:
3361                 p2p_timeout_invite_listen(p2p);
3362                 break;
3363         }
3364 }
3365
3366
3367 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3368 {
3369         struct p2p_device *dev;
3370
3371         dev = p2p_get_device(p2p, peer_addr);
3372         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3373                 MACSTR, MAC2STR(peer_addr));
3374         if (dev == NULL) {
3375                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
3376                 return -1;
3377         }
3378         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3379         dev->flags |= P2P_DEV_USER_REJECTED;
3380         return 0;
3381 }
3382
3383
3384 const char * p2p_wps_method_text(enum p2p_wps_method method)
3385 {
3386         switch (method) {
3387         case WPS_NOT_READY:
3388                 return "not-ready";
3389         case WPS_PIN_DISPLAY:
3390                 return "Display";
3391         case WPS_PIN_KEYPAD:
3392                 return "Keypad";
3393         case WPS_PBC:
3394                 return "PBC";
3395         case WPS_NFC:
3396                 return "NFC";
3397         }
3398
3399         return "??";
3400 }
3401
3402
3403 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3404 {
3405         switch (go_state) {
3406         case UNKNOWN_GO:
3407                 return "unknown";
3408         case LOCAL_GO:
3409                 return "local";
3410         case  REMOTE_GO:
3411                 return "remote";
3412         }
3413
3414         return "??";
3415 }
3416
3417
3418 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3419                                                const u8 *addr, int next)
3420 {
3421         struct p2p_device *dev;
3422
3423         if (addr)
3424                 dev = p2p_get_device(p2p, addr);
3425         else
3426                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3427
3428         if (dev && next) {
3429                 dev = dl_list_first(&dev->list, struct p2p_device, list);
3430                 if (&dev->list == &p2p->devices)
3431                         dev = NULL;
3432         }
3433
3434         if (dev == NULL)
3435                 return NULL;
3436
3437         return &dev->info;
3438 }
3439
3440
3441 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3442                           char *buf, size_t buflen)
3443 {
3444         struct p2p_device *dev;
3445         int res;
3446         char *pos, *end;
3447         struct os_reltime now;
3448
3449         if (info == NULL)
3450                 return -1;
3451
3452         dev = (struct p2p_device *) (((u8 *) info) -
3453                                      offsetof(struct p2p_device, info));
3454
3455         pos = buf;
3456         end = buf + buflen;
3457
3458         os_get_reltime(&now);
3459         res = os_snprintf(pos, end - pos,
3460                           "age=%d\n"
3461                           "listen_freq=%d\n"
3462                           "wps_method=%s\n"
3463                           "interface_addr=" MACSTR "\n"
3464                           "member_in_go_dev=" MACSTR "\n"
3465                           "member_in_go_iface=" MACSTR "\n"
3466                           "go_neg_req_sent=%d\n"
3467                           "go_state=%s\n"
3468                           "dialog_token=%u\n"
3469                           "intended_addr=" MACSTR "\n"
3470                           "country=%c%c\n"
3471                           "oper_freq=%d\n"
3472                           "req_config_methods=0x%x\n"
3473                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3474                           "status=%d\n"
3475                           "wait_count=%u\n"
3476                           "invitation_reqs=%u\n",
3477                           (int) (now.sec - dev->last_seen.sec),
3478                           dev->listen_freq,
3479                           p2p_wps_method_text(dev->wps_method),
3480                           MAC2STR(dev->interface_addr),
3481                           MAC2STR(dev->member_in_go_dev),
3482                           MAC2STR(dev->member_in_go_iface),
3483                           dev->go_neg_req_sent,
3484                           p2p_go_state_text(dev->go_state),
3485                           dev->dialog_token,
3486                           MAC2STR(dev->intended_addr),
3487                           dev->country[0] ? dev->country[0] : '_',
3488                           dev->country[1] ? dev->country[1] : '_',
3489                           dev->oper_freq,
3490                           dev->req_config_methods,
3491                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3492                           "[PROBE_REQ_ONLY]" : "",
3493                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3494                           dev->flags & P2P_DEV_NOT_YET_READY ?
3495                           "[NOT_YET_READY]" : "",
3496                           dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3497                           dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3498                           "",
3499                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3500                           "[PD_PEER_DISPLAY]" : "",
3501                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3502                           "[PD_PEER_KEYPAD]" : "",
3503                           dev->flags & P2P_DEV_USER_REJECTED ?
3504                           "[USER_REJECTED]" : "",
3505                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3506                           "[PEER_WAITING_RESPONSE]" : "",
3507                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3508                           "[PREFER_PERSISTENT_GROUP]" : "",
3509                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3510                           "[WAIT_GO_NEG_RESPONSE]" : "",
3511                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3512                           "[WAIT_GO_NEG_CONFIRM]" : "",
3513                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3514                           "[GROUP_CLIENT_ONLY]" : "",
3515                           dev->flags & P2P_DEV_FORCE_FREQ ?
3516                           "[FORCE_FREQ]" : "",
3517                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
3518                           "[PD_FOR_JOIN]" : "",
3519                           dev->status,
3520                           dev->wait_count,
3521                           dev->invitation_reqs);
3522         if (res < 0 || res >= end - pos)
3523                 return pos - buf;
3524         pos += res;
3525
3526         if (dev->ext_listen_period) {
3527                 res = os_snprintf(pos, end - pos,
3528                                   "ext_listen_period=%u\n"
3529                                   "ext_listen_interval=%u\n",
3530                                   dev->ext_listen_period,
3531                                   dev->ext_listen_interval);
3532                 if (res < 0 || res >= end - pos)
3533                         return pos - buf;
3534                 pos += res;
3535         }
3536
3537         if (dev->oper_ssid_len) {
3538                 res = os_snprintf(pos, end - pos,
3539                                   "oper_ssid=%s\n",
3540                                   wpa_ssid_txt(dev->oper_ssid,
3541                                                dev->oper_ssid_len));
3542                 if (res < 0 || res >= end - pos)
3543                         return pos - buf;
3544                 pos += res;
3545         }
3546
3547 #ifdef CONFIG_WIFI_DISPLAY
3548         if (dev->info.wfd_subelems) {
3549                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3550                 if (res < 0 || res >= end - pos)
3551                         return pos - buf;
3552                 pos += res;
3553
3554                 pos += wpa_snprintf_hex(pos, end - pos,
3555                                         wpabuf_head(dev->info.wfd_subelems),
3556                                         wpabuf_len(dev->info.wfd_subelems));
3557
3558                 res = os_snprintf(pos, end - pos, "\n");
3559                 if (res < 0 || res >= end - pos)
3560                         return pos - buf;
3561                 pos += res;
3562         }
3563 #endif /* CONFIG_WIFI_DISPLAY */
3564
3565         return pos - buf;
3566 }
3567
3568
3569 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3570 {
3571         return p2p_get_device(p2p, addr) != NULL;
3572 }
3573
3574
3575 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3576 {
3577         if (enabled) {
3578                 p2p_dbg(p2p, "Client discoverability enabled");
3579                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3580         } else {
3581                 p2p_dbg(p2p, "Client discoverability disabled");
3582                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3583         }
3584 }
3585
3586
3587 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3588                                               u32 duration2, u32 interval2)
3589 {
3590         struct wpabuf *req;
3591         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3592         u8 *len;
3593
3594         req = wpabuf_alloc(100);
3595         if (req == NULL)
3596                 return NULL;
3597
3598         if (duration1 || interval1) {
3599                 os_memset(&desc1, 0, sizeof(desc1));
3600                 desc1.count_type = 1;
3601                 desc1.duration = duration1;
3602                 desc1.interval = interval1;
3603                 ptr1 = &desc1;
3604
3605                 if (duration2 || interval2) {
3606                         os_memset(&desc2, 0, sizeof(desc2));
3607                         desc2.count_type = 2;
3608                         desc2.duration = duration2;
3609                         desc2.interval = interval2;
3610                         ptr2 = &desc2;
3611                 }
3612         }
3613
3614         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3615         len = p2p_buf_add_ie_hdr(req);
3616         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3617         p2p_buf_update_ie_hdr(req, len);
3618
3619         return req;
3620 }
3621
3622
3623 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3624                      const u8 *own_interface_addr, unsigned int freq,
3625                      u32 duration1, u32 interval1, u32 duration2,
3626                      u32 interval2)
3627 {
3628         struct wpabuf *req;
3629
3630         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3631                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3632                 "dur2=%u int2=%u",
3633                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3634                 freq, duration1, interval1, duration2, interval2);
3635
3636         req = p2p_build_presence_req(duration1, interval1, duration2,
3637                                      interval2);
3638         if (req == NULL)
3639                 return -1;
3640
3641         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3642         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3643                             go_interface_addr,
3644                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3645                 p2p_dbg(p2p, "Failed to send Action frame");
3646         }
3647         wpabuf_free(req);
3648
3649         return 0;
3650 }
3651
3652
3653 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3654                                                size_t noa_len, u8 dialog_token)
3655 {
3656         struct wpabuf *resp;
3657         u8 *len;
3658
3659         resp = wpabuf_alloc(100 + noa_len);
3660         if (resp == NULL)
3661                 return NULL;
3662
3663         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3664         len = p2p_buf_add_ie_hdr(resp);
3665         p2p_buf_add_status(resp, status);
3666         if (noa) {
3667                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3668                 wpabuf_put_le16(resp, noa_len);
3669                 wpabuf_put_data(resp, noa, noa_len);
3670         } else
3671                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3672         p2p_buf_update_ie_hdr(resp, len);
3673
3674         return resp;
3675 }
3676
3677
3678 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3679                                      const u8 *sa, const u8 *data, size_t len,
3680                                      int rx_freq)
3681 {
3682         struct p2p_message msg;
3683         u8 status;
3684         struct wpabuf *resp;
3685         size_t g;
3686         struct p2p_group *group = NULL;
3687         int parsed = 0;
3688         u8 noa[50];
3689         int noa_len;
3690
3691         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
3692
3693         for (g = 0; g < p2p->num_groups; g++) {
3694                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3695                               ETH_ALEN) == 0) {
3696                         group = p2p->groups[g];
3697                         break;
3698                 }
3699         }
3700         if (group == NULL) {
3701                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
3702                         MACSTR, MAC2STR(da));
3703                 return;
3704         }
3705
3706         if (p2p_parse(data, len, &msg) < 0) {
3707                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
3708                 status = P2P_SC_FAIL_INVALID_PARAMS;
3709                 goto fail;
3710         }
3711         parsed = 1;
3712
3713         if (msg.noa == NULL) {
3714                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
3715                 status = P2P_SC_FAIL_INVALID_PARAMS;
3716                 goto fail;
3717         }
3718
3719         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3720
3721 fail:
3722         if (p2p->cfg->get_noa)
3723                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3724                                             sizeof(noa));
3725         else
3726                 noa_len = -1;
3727         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3728                                        noa_len > 0 ? noa_len : 0,
3729                                        msg.dialog_token);
3730         if (parsed)
3731                 p2p_parse_free(&msg);
3732         if (resp == NULL)
3733                 return;
3734
3735         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3736         if (p2p_send_action(p2p, rx_freq, sa, da, da,
3737                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3738                 p2p_dbg(p2p, "Failed to send Action frame");
3739         }
3740         wpabuf_free(resp);
3741 }
3742
3743
3744 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3745                                       const u8 *sa, const u8 *data, size_t len)
3746 {
3747         struct p2p_message msg;
3748
3749         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
3750
3751         if (p2p_parse(data, len, &msg) < 0) {
3752                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
3753                 return;
3754         }
3755
3756         if (msg.status == NULL || msg.noa == NULL) {
3757                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
3758                 p2p_parse_free(&msg);
3759                 return;
3760         }
3761
3762         if (p2p->cfg->presence_resp) {
3763                 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
3764                                         msg.noa, msg.noa_len);
3765         }
3766
3767         if (*msg.status) {
3768                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
3769                         *msg.status);
3770                 p2p_parse_free(&msg);
3771                 return;
3772         }
3773
3774         p2p_dbg(p2p, "P2P Presence Request was accepted");
3775         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3776                     msg.noa, msg.noa_len);
3777         /* TODO: process NoA */
3778         p2p_parse_free(&msg);
3779 }
3780
3781
3782 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3783 {
3784         struct p2p_data *p2p = eloop_ctx;
3785
3786         if (p2p->ext_listen_interval) {
3787                 /* Schedule next extended listen timeout */
3788                 eloop_register_timeout(p2p->ext_listen_interval_sec,
3789                                        p2p->ext_listen_interval_usec,
3790                                        p2p_ext_listen_timeout, p2p, NULL);
3791         }
3792
3793         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3794                 /*
3795                  * This should not really happen, but it looks like the Listen
3796                  * command may fail is something else (e.g., a scan) was
3797                  * running at an inconvenient time. As a workaround, allow new
3798                  * Extended Listen operation to be started.
3799                  */
3800                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
3801                 p2p->ext_listen_only = 0;
3802                 p2p_set_state(p2p, P2P_IDLE);
3803         }
3804
3805         if (p2p->state != P2P_IDLE) {
3806                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
3807                 return;
3808         }
3809
3810         p2p_dbg(p2p, "Extended Listen timeout");
3811         p2p->ext_listen_only = 1;
3812         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3813                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
3814                 p2p->ext_listen_only = 0;
3815         }
3816 }
3817
3818
3819 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3820                    unsigned int interval)
3821 {
3822         if (period > 65535 || interval > 65535 || period > interval ||
3823             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3824                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
3825                         period, interval);
3826                 return -1;
3827         }
3828
3829         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3830
3831         if (interval == 0) {
3832                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
3833                 p2p->ext_listen_period = 0;
3834                 p2p->ext_listen_interval = 0;
3835                 return 0;
3836         }
3837
3838         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
3839                 period, interval);
3840         p2p->ext_listen_period = period;
3841         p2p->ext_listen_interval = interval;
3842         p2p->ext_listen_interval_sec = interval / 1000;
3843         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3844
3845         eloop_register_timeout(p2p->ext_listen_interval_sec,
3846                                p2p->ext_listen_interval_usec,
3847                                p2p_ext_listen_timeout, p2p, NULL);
3848
3849         return 0;
3850 }
3851
3852
3853 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3854                       const u8 *ie, size_t ie_len)
3855 {
3856         struct p2p_message msg;
3857
3858         if (bssid == NULL || ie == NULL)
3859                 return;
3860
3861         os_memset(&msg, 0, sizeof(msg));
3862         if (p2p_parse_ies(ie, ie_len, &msg))
3863                 return;
3864         if (msg.minor_reason_code == NULL)
3865                 return;
3866
3867         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
3868                 " reason_code=%u minor_reason_code=%u",
3869                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3870
3871         p2p_parse_free(&msg);
3872 }
3873
3874
3875 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3876                         const u8 *ie, size_t ie_len)
3877 {
3878         struct p2p_message msg;
3879
3880         if (bssid == NULL || ie == NULL)
3881                 return;
3882
3883         os_memset(&msg, 0, sizeof(msg));
3884         if (p2p_parse_ies(ie, ie_len, &msg))
3885                 return;
3886         if (msg.minor_reason_code == NULL)
3887                 return;
3888
3889         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
3890                 " reason_code=%u minor_reason_code=%u",
3891                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3892
3893         p2p_parse_free(&msg);
3894 }
3895
3896
3897 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3898 {
3899         if (enabled) {
3900                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
3901                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3902         } else {
3903                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
3904                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3905         }
3906 }
3907
3908
3909 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3910 {
3911         if (p2p_channel_to_freq(reg_class, channel) < 0)
3912                 return -1;
3913
3914         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
3915                 reg_class, channel);
3916         p2p->cfg->reg_class = reg_class;
3917         p2p->cfg->channel = channel;
3918
3919         return 0;
3920 }
3921
3922
3923 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3924 {
3925         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
3926         if (postfix == NULL) {
3927                 p2p->cfg->ssid_postfix_len = 0;
3928                 return 0;
3929         }
3930         if (len > sizeof(p2p->cfg->ssid_postfix))
3931                 return -1;
3932         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3933         p2p->cfg->ssid_postfix_len = len;
3934         return 0;
3935 }
3936
3937
3938 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
3939                          int cfg_op_channel)
3940 {
3941         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
3942                 return -1;
3943
3944         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
3945                 op_reg_class, op_channel);
3946         p2p->cfg->op_reg_class = op_reg_class;
3947         p2p->cfg->op_channel = op_channel;
3948         p2p->cfg->cfg_op_channel = cfg_op_channel;
3949         return 0;
3950 }
3951
3952
3953 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
3954                       const struct p2p_channel *pref_chan)
3955 {
3956         struct p2p_channel *n;
3957
3958         if (pref_chan) {
3959                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
3960                 if (n == NULL)
3961                         return -1;
3962                 os_memcpy(n, pref_chan,
3963                           num_pref_chan * sizeof(struct p2p_channel));
3964         } else
3965                 n = NULL;
3966
3967         os_free(p2p->cfg->pref_chan);
3968         p2p->cfg->pref_chan = n;
3969         p2p->cfg->num_pref_chan = num_pref_chan;
3970
3971         return 0;
3972 }
3973
3974
3975 int p2p_set_no_go_freq(struct p2p_data *p2p,
3976                        const struct wpa_freq_range_list *list)
3977 {
3978         struct wpa_freq_range *tmp;
3979
3980         if (list == NULL || list->num == 0) {
3981                 os_free(p2p->no_go_freq.range);
3982                 p2p->no_go_freq.range = NULL;
3983                 p2p->no_go_freq.num = 0;
3984                 return 0;
3985         }
3986
3987         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
3988         if (tmp == NULL)
3989                 return -1;
3990         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
3991         os_free(p2p->no_go_freq.range);
3992         p2p->no_go_freq.range = tmp;
3993         p2p->no_go_freq.num = list->num;
3994         p2p_dbg(p2p, "Updated no GO chan list");
3995
3996         return 0;
3997 }
3998
3999
4000 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4001                            u8 *iface_addr)
4002 {
4003         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4004         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4005                 return -1;
4006         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4007         return 0;
4008 }
4009
4010
4011 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4012                            u8 *dev_addr)
4013 {
4014         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4015         if (dev == NULL)
4016                 return -1;
4017         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4018         return 0;
4019 }
4020
4021
4022 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4023 {
4024         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4025         if (is_zero_ether_addr(p2p->peer_filter))
4026                 p2p_dbg(p2p, "Disable peer filter");
4027         else
4028                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4029                         MAC2STR(p2p->peer_filter));
4030 }
4031
4032
4033 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4034 {
4035         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4036         if (p2p->cross_connect == enabled)
4037                 return;
4038         p2p->cross_connect = enabled;
4039         /* TODO: may need to tear down any action group where we are GO(?) */
4040 }
4041
4042
4043 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4044 {
4045         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4046         if (dev == NULL)
4047                 return -1;
4048         if (dev->oper_freq <= 0)
4049                 return -1;
4050         return dev->oper_freq;
4051 }
4052
4053
4054 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4055 {
4056         p2p_dbg(p2p, "Intra BSS distribution %s",
4057                 enabled ? "enabled" : "disabled");
4058         p2p->cfg->p2p_intra_bss = enabled;
4059 }
4060
4061
4062 void p2p_update_channel_list(struct p2p_data *p2p,
4063                              const struct p2p_channels *chan,
4064                              const struct p2p_channels *cli_chan)
4065 {
4066         p2p_dbg(p2p, "Update channel list");
4067         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4068         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4069         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4070                   sizeof(struct p2p_channels));
4071         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4072 }
4073
4074
4075 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4076                     const u8 *src, const u8 *bssid, const u8 *buf,
4077                     size_t len, unsigned int wait_time)
4078 {
4079         if (p2p->p2p_scan_running) {
4080                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4081                 if (p2p->after_scan_tx) {
4082                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4083                         os_free(p2p->after_scan_tx);
4084                 }
4085                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4086                                                len);
4087                 if (p2p->after_scan_tx == NULL)
4088                         return -1;
4089                 p2p->after_scan_tx->freq = freq;
4090                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4091                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4092                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4093                 p2p->after_scan_tx->len = len;
4094                 p2p->after_scan_tx->wait_time = wait_time;
4095                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4096                 return 0;
4097         }
4098
4099         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4100                                      buf, len, wait_time);
4101 }
4102
4103
4104 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4105                            int freq_overall)
4106 {
4107         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4108                 freq_24, freq_5, freq_overall);
4109         p2p->best_freq_24 = freq_24;
4110         p2p->best_freq_5 = freq_5;
4111         p2p->best_freq_overall = freq_overall;
4112 }
4113
4114
4115 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4116 {
4117         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4118         p2p->own_freq_preference = freq;
4119 }
4120
4121
4122 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4123 {
4124         if (p2p == NULL || p2p->go_neg_peer == NULL)
4125                 return NULL;
4126         return p2p->go_neg_peer->info.p2p_device_addr;
4127 }
4128
4129
4130 const struct p2p_peer_info *
4131 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4132 {
4133         struct p2p_device *dev;
4134
4135         if (addr) {
4136                 dev = p2p_get_device(p2p, addr);
4137                 if (!dev)
4138                         return NULL;
4139
4140                 if (!next) {
4141                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4142                                 return NULL;
4143
4144                         return &dev->info;
4145                 } else {
4146                         do {
4147                                 dev = dl_list_first(&dev->list,
4148                                                     struct p2p_device,
4149                                                     list);
4150                                 if (&dev->list == &p2p->devices)
4151                                         return NULL;
4152                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4153                 }
4154         } else {
4155                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4156                 if (!dev)
4157                         return NULL;
4158                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4159                         dev = dl_list_first(&dev->list,
4160                                             struct p2p_device,
4161                                             list);
4162                         if (&dev->list == &p2p->devices)
4163                                 return NULL;
4164                 }
4165         }
4166
4167         return &dev->info;
4168 }
4169
4170
4171 int p2p_in_progress(struct p2p_data *p2p)
4172 {
4173         if (p2p == NULL)
4174                 return 0;
4175         if (p2p->state == P2P_SEARCH)
4176                 return 2;
4177         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4178 }
4179
4180
4181 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4182                             u8 client_timeout)
4183 {
4184         if (p2p) {
4185                 p2p->go_timeout = go_timeout;
4186                 p2p->client_timeout = client_timeout;
4187         }
4188 }
4189
4190
4191 #ifdef CONFIG_WIFI_DISPLAY
4192
4193 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4194 {
4195         size_t g;
4196         struct p2p_group *group;
4197
4198         for (g = 0; g < p2p->num_groups; g++) {
4199                 group = p2p->groups[g];
4200                 p2p_group_force_beacon_update_ies(group);
4201         }
4202 }
4203
4204
4205 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4206 {
4207         wpabuf_free(p2p->wfd_ie_beacon);
4208         p2p->wfd_ie_beacon = ie;
4209         p2p_update_wfd_ie_groups(p2p);
4210         return 0;
4211 }
4212
4213
4214 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4215 {
4216         wpabuf_free(p2p->wfd_ie_probe_req);
4217         p2p->wfd_ie_probe_req = ie;
4218         return 0;
4219 }
4220
4221
4222 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4223 {
4224         wpabuf_free(p2p->wfd_ie_probe_resp);
4225         p2p->wfd_ie_probe_resp = ie;
4226         p2p_update_wfd_ie_groups(p2p);
4227         return 0;
4228 }
4229
4230
4231 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4232 {
4233         wpabuf_free(p2p->wfd_ie_assoc_req);
4234         p2p->wfd_ie_assoc_req = ie;
4235         return 0;
4236 }
4237
4238
4239 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4240 {
4241         wpabuf_free(p2p->wfd_ie_invitation);
4242         p2p->wfd_ie_invitation = ie;
4243         return 0;
4244 }
4245
4246
4247 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4248 {
4249         wpabuf_free(p2p->wfd_ie_prov_disc_req);
4250         p2p->wfd_ie_prov_disc_req = ie;
4251         return 0;
4252 }
4253
4254
4255 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4256 {
4257         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4258         p2p->wfd_ie_prov_disc_resp = ie;
4259         return 0;
4260 }
4261
4262
4263 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4264 {
4265         wpabuf_free(p2p->wfd_ie_go_neg);
4266         p2p->wfd_ie_go_neg = ie;
4267         return 0;
4268 }
4269
4270
4271 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4272 {
4273         wpabuf_free(p2p->wfd_dev_info);
4274         if (elem) {
4275                 p2p->wfd_dev_info = wpabuf_dup(elem);
4276                 if (p2p->wfd_dev_info == NULL)
4277                         return -1;
4278         } else
4279                 p2p->wfd_dev_info = NULL;
4280
4281         return 0;
4282 }
4283
4284
4285 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4286 {
4287         wpabuf_free(p2p->wfd_assoc_bssid);
4288         if (elem) {
4289                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4290                 if (p2p->wfd_assoc_bssid == NULL)
4291                         return -1;
4292         } else
4293                 p2p->wfd_assoc_bssid = NULL;
4294
4295         return 0;
4296 }
4297
4298
4299 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4300                                   const struct wpabuf *elem)
4301 {
4302         wpabuf_free(p2p->wfd_coupled_sink_info);
4303         if (elem) {
4304                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4305                 if (p2p->wfd_coupled_sink_info == NULL)
4306                         return -1;
4307         } else
4308                 p2p->wfd_coupled_sink_info = NULL;
4309
4310         return 0;
4311 }
4312
4313 #endif /* CONFIG_WIFI_DISPLAY */
4314
4315
4316 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4317                      int max_disc_tu)
4318 {
4319         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4320                 return -1;
4321
4322         p2p->min_disc_int = min_disc_int;
4323         p2p->max_disc_int = max_disc_int;
4324         p2p->max_disc_tu = max_disc_tu;
4325         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4326                 min_disc_int, max_disc_int, max_disc_tu);
4327
4328         return 0;
4329 }
4330
4331
4332 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4333 {
4334         va_list ap;
4335         char buf[500];
4336
4337         if (!p2p->cfg->debug_print)
4338                 return;
4339
4340         va_start(ap, fmt);
4341         vsnprintf(buf, sizeof(buf), fmt, ap);
4342         buf[sizeof(buf) - 1] = '\0';
4343         va_end(ap);
4344         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4345 }
4346
4347
4348 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4349 {
4350         va_list ap;
4351         char buf[500];
4352
4353         if (!p2p->cfg->debug_print)
4354                 return;
4355
4356         va_start(ap, fmt);
4357         vsnprintf(buf, sizeof(buf), fmt, ap);
4358         buf[sizeof(buf) - 1] = '\0';
4359         va_end(ap);
4360         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4361 }
4362
4363
4364 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4365 {
4366         va_list ap;
4367         char buf[500];
4368
4369         if (!p2p->cfg->debug_print)
4370                 return;
4371
4372         va_start(ap, fmt);
4373         vsnprintf(buf, sizeof(buf), fmt, ap);
4374         buf[sizeof(buf) - 1] = '\0';
4375         va_end(ap);
4376         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4377 }
4378
4379
4380 #ifdef CONFIG_WPS_NFC
4381
4382 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
4383                                               int client_freq)
4384 {
4385         struct wpabuf *buf;
4386         u8 op_class, channel;
4387         enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
4388
4389         buf = wpabuf_alloc(1000);
4390         if (buf == NULL)
4391                 return NULL;
4392
4393         op_class = p2p->cfg->reg_class;
4394         channel = p2p->cfg->channel;
4395
4396         p2p_buf_add_capability(buf, p2p->dev_capab &
4397                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
4398         p2p_buf_add_device_info(buf, p2p, NULL);
4399
4400         if (p2p->num_groups > 0) {
4401                 role = P2P_GO_IN_A_GROUP;
4402                 p2p_freq_to_channel(p2p_group_get_freq(p2p->groups[0]),
4403                                     &op_class, &channel);
4404         } else if (client_freq > 0) {
4405                 role = P2P_CLIENT_IN_A_GROUP;
4406                 p2p_freq_to_channel(client_freq, &op_class, &channel);
4407         }
4408
4409         p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
4410                                        channel, role);
4411
4412         if (p2p->num_groups > 0) {
4413                 /* Limit number of clients to avoid very long message */
4414                 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
4415                 p2p_group_buf_add_id(p2p->groups[0], buf);
4416         }
4417
4418         return buf;
4419 }
4420
4421
4422 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
4423                                            int client_freq)
4424 {
4425         return p2p_build_nfc_handover(p2p, client_freq);
4426 }
4427
4428
4429 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
4430                                            int client_freq)
4431 {
4432         return p2p_build_nfc_handover(p2p, client_freq);
4433 }
4434
4435
4436 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
4437                                         struct p2p_nfc_params *params)
4438 {
4439         struct p2p_message msg;
4440         struct p2p_device *dev;
4441         const u8 *p2p_dev_addr;
4442         int freq;
4443         enum p2p_role_indication role;
4444
4445         params->next_step = NO_ACTION;
4446
4447         if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
4448                                    params->p2p_attr, params->p2p_len, &msg)) {
4449                 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
4450                 p2p_parse_free(&msg);
4451                 return -1;
4452         }
4453
4454         if (msg.p2p_device_addr)
4455                 p2p_dev_addr = msg.p2p_device_addr;
4456         else if (msg.device_id)
4457                 p2p_dev_addr = msg.device_id;
4458         else {
4459                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
4460                 p2p_parse_free(&msg);
4461                 return -1;
4462         }
4463
4464         if (msg.oob_dev_password) {
4465                 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
4466                           msg.oob_dev_password_len);
4467                 params->oob_dev_pw_len = msg.oob_dev_password_len;
4468         }
4469
4470         dev = p2p_create_device(p2p, p2p_dev_addr);
4471         if (dev == NULL) {
4472                 p2p_parse_free(&msg);
4473                 return -1;
4474         }
4475
4476         params->peer = &dev->info;
4477
4478         os_get_reltime(&dev->last_seen);
4479         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
4480         p2p_copy_wps_info(p2p, dev, 0, &msg);
4481
4482         if (!msg.oob_go_neg_channel) {
4483                 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
4484                 return -1;
4485         }
4486
4487         if (msg.oob_go_neg_channel[3] == 0 &&
4488             msg.oob_go_neg_channel[4] == 0)
4489                 freq = 0;
4490         else
4491                 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
4492                                            msg.oob_go_neg_channel[4]);
4493         if (freq < 0) {
4494                 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
4495                 return -1;
4496         } else {
4497                 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
4498                 dev->oob_go_neg_freq = freq;
4499         }
4500
4501         if (!params->sel) {
4502                 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
4503                                            p2p->cfg->channel);
4504                 if (freq < 0) {
4505                         p2p_dbg(p2p, "Own listen channel not known");
4506                         return -1;
4507                 }
4508                 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
4509                 dev->oob_go_neg_freq = freq;
4510         }
4511
4512         role = msg.oob_go_neg_channel[5];
4513
4514         p2p_parse_free(&msg);
4515
4516         if (dev->flags & P2P_DEV_USER_REJECTED) {
4517                 p2p_dbg(p2p, "Do not report rejected device");
4518                 return 0;
4519         }
4520
4521         if (!(dev->flags & P2P_DEV_REPORTED)) {
4522                 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
4523                                     !(dev->flags & P2P_DEV_REPORTED_ONCE));
4524                 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
4525         }
4526
4527         if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
4528                 params->next_step = BOTH_GO;
4529         else if (role == P2P_GO_IN_A_GROUP)
4530                 params->next_step = JOIN_GROUP;
4531         else if (role == P2P_CLIENT_IN_A_GROUP) {
4532                 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
4533                 params->next_step = PEER_CLIENT;
4534         } else if (p2p->num_groups > 0)
4535                 params->next_step = AUTH_JOIN;
4536         else if (params->sel)
4537                 params->next_step = INIT_GO_NEG;
4538         else
4539                 params->next_step = RESP_GO_NEG;
4540
4541         return 0;
4542 }
4543
4544
4545 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
4546                                       int go_intent,
4547                                       const u8 *own_interface_addr)
4548 {
4549
4550         p2p->authorized_oob_dev_pw_id = dev_pw_id;
4551         if (dev_pw_id == 0) {
4552                 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
4553                 return;
4554         }
4555
4556         p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
4557                 dev_pw_id);
4558
4559         p2p->go_intent = go_intent;
4560         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
4561 }
4562
4563 #endif /* CONFIG_WPS_NFC */