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                 res = 0; /* do not report failure */
1053         } else {
1054                 p2p_dbg(p2p, "Failed to start p2p_scan");
1055                 p2p_set_state(p2p, P2P_IDLE);
1056                 eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1057         }
1058
1059         return res;
1060 }
1061
1062
1063 void p2p_stop_find_for_freq(struct p2p_data *p2p, int freq)
1064 {
1065         p2p_dbg(p2p, "Stopping find");
1066         eloop_cancel_timeout(p2p_find_timeout, p2p, NULL);
1067         p2p_clear_timeout(p2p);
1068         if (p2p->state == P2P_SEARCH)
1069                 p2p->cfg->find_stopped(p2p->cfg->cb_ctx);
1070         p2p_set_state(p2p, P2P_IDLE);
1071         p2p_free_req_dev_types(p2p);
1072         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1073         if (p2p->go_neg_peer)
1074                 p2p->go_neg_peer->flags &= ~P2P_DEV_PEER_WAITING_RESPONSE;
1075         p2p->go_neg_peer = NULL;
1076         p2p->sd_peer = NULL;
1077         p2p->invite_peer = NULL;
1078         p2p_stop_listen_for_freq(p2p, freq);
1079 }
1080
1081
1082 void p2p_stop_listen_for_freq(struct p2p_data *p2p, int freq)
1083 {
1084         if (freq > 0 && p2p->drv_in_listen == freq && p2p->in_listen) {
1085                 p2p_dbg(p2p, "Skip stop_listen since we are on correct channel for response");
1086                 return;
1087         }
1088         if (p2p->in_listen) {
1089                 p2p->in_listen = 0;
1090                 p2p_clear_timeout(p2p);
1091         }
1092         if (p2p->drv_in_listen) {
1093                 /*
1094                  * The driver may not deliver callback to p2p_listen_end()
1095                  * when the operation gets canceled, so clear the internal
1096                  * variable that is tracking driver state.
1097                  */
1098                 p2p_dbg(p2p, "Clear drv_in_listen (%d)", p2p->drv_in_listen);
1099                 p2p->drv_in_listen = 0;
1100         }
1101         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1102 }
1103
1104
1105 void p2p_stop_listen(struct p2p_data *p2p)
1106 {
1107         if (p2p->state != P2P_LISTEN_ONLY) {
1108                 p2p_dbg(p2p, "Skip stop_listen since not in listen_only state.");
1109                 return;
1110         }
1111
1112         p2p_stop_listen_for_freq(p2p, 0);
1113         p2p_set_state(p2p, P2P_IDLE);
1114 }
1115
1116
1117 void p2p_stop_find(struct p2p_data *p2p)
1118 {
1119         p2p_stop_find_for_freq(p2p, 0);
1120 }
1121
1122
1123 static int p2p_prepare_channel_pref(struct p2p_data *p2p,
1124                                     unsigned int force_freq,
1125                                     unsigned int pref_freq, int go)
1126 {
1127         u8 op_class, op_channel;
1128         unsigned int freq = force_freq ? force_freq : pref_freq;
1129
1130         p2p_dbg(p2p, "Prepare channel pref - force_freq=%u pref_freq=%u go=%d",
1131                 force_freq, pref_freq, go);
1132         if (p2p_freq_to_channel(freq, &op_class, &op_channel) < 0) {
1133                 p2p_dbg(p2p, "Unsupported frequency %u MHz", freq);
1134                 return -1;
1135         }
1136
1137         if (!p2p_channels_includes(&p2p->cfg->channels, op_class, op_channel) &&
1138             (go || !p2p_channels_includes(&p2p->cfg->cli_channels, op_class,
1139                                           op_channel))) {
1140                 p2p_dbg(p2p, "Frequency %u MHz (oper_class %u channel %u) not allowed for P2P",
1141                         freq, op_class, op_channel);
1142                 return -1;
1143         }
1144
1145         p2p->op_reg_class = op_class;
1146         p2p->op_channel = op_channel;
1147
1148         if (force_freq) {
1149                 p2p->channels.reg_classes = 1;
1150                 p2p->channels.reg_class[0].channels = 1;
1151                 p2p->channels.reg_class[0].reg_class = p2p->op_reg_class;
1152                 p2p->channels.reg_class[0].channel[0] = p2p->op_channel;
1153         } else {
1154                 os_memcpy(&p2p->channels, &p2p->cfg->channels,
1155                           sizeof(struct p2p_channels));
1156         }
1157
1158         return 0;
1159 }
1160
1161
1162 static void p2p_prepare_channel_best(struct p2p_data *p2p)
1163 {
1164         u8 op_class, op_channel;
1165         const int op_classes_5ghz[] = { 124, 115, 0 };
1166         const int op_classes_ht40[] = { 126, 127, 116, 117, 0 };
1167         const int op_classes_vht[] = { 128, 0 };
1168
1169         p2p_dbg(p2p, "Prepare channel best");
1170
1171         if (!p2p->cfg->cfg_op_channel && p2p->best_freq_overall > 0 &&
1172             p2p_supported_freq(p2p, p2p->best_freq_overall) &&
1173             p2p_freq_to_channel(p2p->best_freq_overall, &op_class, &op_channel)
1174             == 0) {
1175                 p2p_dbg(p2p, "Select best overall channel as operating channel preference");
1176                 p2p->op_reg_class = op_class;
1177                 p2p->op_channel = op_channel;
1178         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_5 > 0 &&
1179                    p2p_supported_freq(p2p, p2p->best_freq_5) &&
1180                    p2p_freq_to_channel(p2p->best_freq_5, &op_class, &op_channel)
1181                    == 0) {
1182                 p2p_dbg(p2p, "Select best 5 GHz channel as operating channel preference");
1183                 p2p->op_reg_class = op_class;
1184                 p2p->op_channel = op_channel;
1185         } else if (!p2p->cfg->cfg_op_channel && p2p->best_freq_24 > 0 &&
1186                    p2p_supported_freq(p2p, p2p->best_freq_24) &&
1187                    p2p_freq_to_channel(p2p->best_freq_24, &op_class,
1188                                        &op_channel) == 0) {
1189                 p2p_dbg(p2p, "Select best 2.4 GHz channel as operating channel preference");
1190                 p2p->op_reg_class = op_class;
1191                 p2p->op_channel = op_channel;
1192         } else if (p2p->cfg->num_pref_chan > 0 &&
1193                    p2p_channels_includes(&p2p->cfg->channels,
1194                                          p2p->cfg->pref_chan[0].op_class,
1195                                          p2p->cfg->pref_chan[0].chan)) {
1196                 p2p_dbg(p2p, "Select first pref_chan entry as operating channel preference");
1197                 p2p->op_reg_class = p2p->cfg->pref_chan[0].op_class;
1198                 p2p->op_channel = p2p->cfg->pref_chan[0].chan;
1199         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_vht,
1200                                       &p2p->op_reg_class, &p2p->op_channel) ==
1201                    0) {
1202                 p2p_dbg(p2p, "Select possible VHT channel (op_class %u channel %u) as operating channel preference",
1203                         p2p->op_reg_class, p2p->op_channel);
1204         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_ht40,
1205                                       &p2p->op_reg_class, &p2p->op_channel) ==
1206                    0) {
1207                 p2p_dbg(p2p, "Select possible HT40 channel (op_class %u channel %u) as operating channel preference",
1208                         p2p->op_reg_class, p2p->op_channel);
1209         } else if (p2p_channel_select(&p2p->cfg->channels, op_classes_5ghz,
1210                                       &p2p->op_reg_class, &p2p->op_channel) ==
1211                    0) {
1212                 p2p_dbg(p2p, "Select possible 5 GHz channel (op_class %u channel %u) as operating channel preference",
1213                         p2p->op_reg_class, p2p->op_channel);
1214         } else {
1215                 p2p_dbg(p2p, "Select pre-configured channel as operating channel preference");
1216                 p2p->op_reg_class = p2p->cfg->op_reg_class;
1217                 p2p->op_channel = p2p->cfg->op_channel;
1218         }
1219
1220         os_memcpy(&p2p->channels, &p2p->cfg->channels,
1221                   sizeof(struct p2p_channels));
1222 }
1223
1224
1225 /**
1226  * p2p_prepare_channel - Select operating channel for GO Negotiation
1227  * @p2p: P2P module context from p2p_init()
1228  * @dev: Selected peer device
1229  * @force_freq: Forced frequency in MHz or 0 if not forced
1230  * @pref_freq: Preferred frequency in MHz or 0 if no preference
1231  * @go: Whether the local end will be forced to be GO
1232  * Returns: 0 on success, -1 on failure (channel not supported for P2P)
1233  *
1234  * This function is used to do initial operating channel selection for GO
1235  * Negotiation prior to having received peer information. The selected channel
1236  * may be further optimized in p2p_reselect_channel() once the peer information
1237  * is available.
1238  */
1239 int p2p_prepare_channel(struct p2p_data *p2p, struct p2p_device *dev,
1240                         unsigned int force_freq, unsigned int pref_freq, int go)
1241 {
1242         p2p_dbg(p2p, "Prepare channel - force_freq=%u pref_freq=%u go=%d",
1243                 force_freq, pref_freq, go);
1244         if (force_freq || pref_freq) {
1245                 if (p2p_prepare_channel_pref(p2p, force_freq, pref_freq, go) <
1246                     0)
1247                         return -1;
1248         } else {
1249                 p2p_prepare_channel_best(p2p);
1250         }
1251         p2p_channels_dump(p2p, "prepared channels", &p2p->channels);
1252         if (go)
1253                 p2p_channels_remove_freqs(&p2p->channels, &p2p->no_go_freq);
1254         else if (!force_freq)
1255                 p2p_channels_union(&p2p->channels, &p2p->cfg->cli_channels,
1256                                    &p2p->channels);
1257         p2p_channels_dump(p2p, "after go/cli filter/add", &p2p->channels);
1258
1259         p2p_dbg(p2p, "Own preference for operation channel: Operating Class %u Channel %u%s",
1260                 p2p->op_reg_class, p2p->op_channel,
1261                 force_freq ? " (forced)" : "");
1262
1263         if (force_freq)
1264                 dev->flags |= P2P_DEV_FORCE_FREQ;
1265         else
1266                 dev->flags &= ~P2P_DEV_FORCE_FREQ;
1267
1268         return 0;
1269 }
1270
1271
1272 static void p2p_set_dev_persistent(struct p2p_device *dev,
1273                                    int persistent_group)
1274 {
1275         switch (persistent_group) {
1276         case 0:
1277                 dev->flags &= ~(P2P_DEV_PREFER_PERSISTENT_GROUP |
1278                                 P2P_DEV_PREFER_PERSISTENT_RECONN);
1279                 break;
1280         case 1:
1281                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP;
1282                 dev->flags &= ~P2P_DEV_PREFER_PERSISTENT_RECONN;
1283                 break;
1284         case 2:
1285                 dev->flags |= P2P_DEV_PREFER_PERSISTENT_GROUP |
1286                         P2P_DEV_PREFER_PERSISTENT_RECONN;
1287                 break;
1288         }
1289 }
1290
1291
1292 int p2p_connect(struct p2p_data *p2p, const u8 *peer_addr,
1293                 enum p2p_wps_method wps_method,
1294                 int go_intent, const u8 *own_interface_addr,
1295                 unsigned int force_freq, int persistent_group,
1296                 const u8 *force_ssid, size_t force_ssid_len,
1297                 int pd_before_go_neg, unsigned int pref_freq, u16 oob_pw_id)
1298 {
1299         struct p2p_device *dev;
1300
1301         p2p_dbg(p2p, "Request to start group negotiation - peer=" MACSTR
1302                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1303                 " wps_method=%d persistent_group=%d pd_before_go_neg=%d "
1304                 "oob_pw_id=%u",
1305                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1306                 wps_method, persistent_group, pd_before_go_neg, oob_pw_id);
1307
1308         dev = p2p_get_device(p2p, peer_addr);
1309         if (dev == NULL || (dev->flags & P2P_DEV_PROBE_REQ_ONLY)) {
1310                 p2p_dbg(p2p, "Cannot connect to unknown P2P Device " MACSTR,
1311                         MAC2STR(peer_addr));
1312                 return -1;
1313         }
1314
1315         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq,
1316                                 go_intent == 15) < 0)
1317                 return -1;
1318
1319         if (dev->flags & P2P_DEV_GROUP_CLIENT_ONLY) {
1320                 if (!(dev->info.dev_capab &
1321                       P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY)) {
1322                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1323                                 " that is in a group and is not discoverable",
1324                                 MAC2STR(peer_addr));
1325                         return -1;
1326                 }
1327                 if (dev->oper_freq <= 0) {
1328                         p2p_dbg(p2p, "Cannot connect to P2P Device " MACSTR
1329                                 " with incomplete information",
1330                                 MAC2STR(peer_addr));
1331                         return -1;
1332                 }
1333
1334                 /*
1335                  * First, try to connect directly. If the peer does not
1336                  * acknowledge frames, assume it is sleeping and use device
1337                  * discoverability via the GO at that point.
1338                  */
1339         }
1340
1341         p2p->ssid_set = 0;
1342         if (force_ssid) {
1343                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1344                                   force_ssid, force_ssid_len);
1345                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1346                 p2p->ssid_len = force_ssid_len;
1347                 p2p->ssid_set = 1;
1348         }
1349
1350         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1351         dev->flags &= ~P2P_DEV_USER_REJECTED;
1352         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
1353         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
1354         if (pd_before_go_neg)
1355                 dev->flags |= P2P_DEV_PD_BEFORE_GO_NEG;
1356         else {
1357                 dev->flags &= ~P2P_DEV_PD_BEFORE_GO_NEG;
1358                 /*
1359                  * Assign dialog token and tie breaker here to use the same
1360                  * values in each retry within the same GO Negotiation exchange.
1361                  */
1362                 dev->dialog_token++;
1363                 if (dev->dialog_token == 0)
1364                         dev->dialog_token = 1;
1365                 dev->tie_breaker = p2p->next_tie_breaker;
1366                 p2p->next_tie_breaker = !p2p->next_tie_breaker;
1367         }
1368         dev->connect_reqs = 0;
1369         dev->go_neg_req_sent = 0;
1370         dev->go_state = UNKNOWN_GO;
1371         p2p_set_dev_persistent(dev, persistent_group);
1372         p2p->go_intent = go_intent;
1373         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1374
1375         if (p2p->state != P2P_IDLE)
1376                 p2p_stop_find(p2p);
1377
1378         if (p2p->after_scan_tx) {
1379                 /*
1380                  * We need to drop the pending frame to avoid issues with the
1381                  * new GO Negotiation, e.g., when the pending frame was from a
1382                  * previous attempt at starting a GO Negotiation.
1383                  */
1384                 p2p_dbg(p2p, "Dropped previous pending Action frame TX that was waiting for p2p_scan completion");
1385                 os_free(p2p->after_scan_tx);
1386                 p2p->after_scan_tx = NULL;
1387         }
1388
1389         dev->wps_method = wps_method;
1390         dev->oob_pw_id = oob_pw_id;
1391         dev->status = P2P_SC_SUCCESS;
1392
1393         if (p2p->p2p_scan_running) {
1394                 p2p_dbg(p2p, "p2p_scan running - delay connect send");
1395                 p2p->start_after_scan = P2P_AFTER_SCAN_CONNECT;
1396                 os_memcpy(p2p->after_scan_peer, peer_addr, ETH_ALEN);
1397                 return 0;
1398         }
1399         p2p->start_after_scan = P2P_AFTER_SCAN_NOTHING;
1400
1401         return p2p_connect_send(p2p, dev);
1402 }
1403
1404
1405 int p2p_authorize(struct p2p_data *p2p, const u8 *peer_addr,
1406                   enum p2p_wps_method wps_method,
1407                   int go_intent, const u8 *own_interface_addr,
1408                   unsigned int force_freq, int persistent_group,
1409                   const u8 *force_ssid, size_t force_ssid_len,
1410                   unsigned int pref_freq, u16 oob_pw_id)
1411 {
1412         struct p2p_device *dev;
1413
1414         p2p_dbg(p2p, "Request to authorize group negotiation - peer=" MACSTR
1415                 "  GO Intent=%d  Intended Interface Address=" MACSTR
1416                 " wps_method=%d  persistent_group=%d oob_pw_id=%u",
1417                 MAC2STR(peer_addr), go_intent, MAC2STR(own_interface_addr),
1418                 wps_method, persistent_group, oob_pw_id);
1419
1420         dev = p2p_get_device(p2p, peer_addr);
1421         if (dev == NULL) {
1422                 p2p_dbg(p2p, "Cannot authorize unknown P2P Device " MACSTR,
1423                         MAC2STR(peer_addr));
1424                 return -1;
1425         }
1426
1427         if (p2p_prepare_channel(p2p, dev, force_freq, pref_freq, go_intent ==
1428                                 15) < 0)
1429                 return -1;
1430
1431         p2p->ssid_set = 0;
1432         if (force_ssid) {
1433                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Forced SSID",
1434                                   force_ssid, force_ssid_len);
1435                 os_memcpy(p2p->ssid, force_ssid, force_ssid_len);
1436                 p2p->ssid_len = force_ssid_len;
1437                 p2p->ssid_set = 1;
1438         }
1439
1440         dev->flags &= ~P2P_DEV_NOT_YET_READY;
1441         dev->flags &= ~P2P_DEV_USER_REJECTED;
1442         dev->go_neg_req_sent = 0;
1443         dev->go_state = UNKNOWN_GO;
1444         p2p_set_dev_persistent(dev, persistent_group);
1445         p2p->go_intent = go_intent;
1446         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
1447
1448         dev->wps_method = wps_method;
1449         dev->oob_pw_id = oob_pw_id;
1450         dev->status = P2P_SC_SUCCESS;
1451
1452         return 0;
1453 }
1454
1455
1456 void p2p_add_dev_info(struct p2p_data *p2p, const u8 *addr,
1457                       struct p2p_device *dev, struct p2p_message *msg)
1458 {
1459         os_get_reltime(&dev->last_seen);
1460
1461         p2p_copy_wps_info(p2p, dev, 0, msg);
1462
1463         if (msg->listen_channel) {
1464                 int freq;
1465                 freq = p2p_channel_to_freq(msg->listen_channel[3],
1466                                            msg->listen_channel[4]);
1467                 if (freq < 0) {
1468                         p2p_dbg(p2p, "Unknown peer Listen channel: "
1469                                 "country=%c%c(0x%02x) reg_class=%u channel=%u",
1470                                 msg->listen_channel[0],
1471                                 msg->listen_channel[1],
1472                                 msg->listen_channel[2],
1473                                 msg->listen_channel[3],
1474                                 msg->listen_channel[4]);
1475                 } else {
1476                         p2p_dbg(p2p, "Update peer " MACSTR
1477                                 " Listen channel: %u -> %u MHz",
1478                                 MAC2STR(dev->info.p2p_device_addr),
1479                                 dev->listen_freq, freq);
1480                         dev->listen_freq = freq;
1481                 }
1482         }
1483
1484         if (msg->wfd_subelems) {
1485                 wpabuf_free(dev->info.wfd_subelems);
1486                 dev->info.wfd_subelems = wpabuf_dup(msg->wfd_subelems);
1487         }
1488
1489         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
1490                 dev->flags &= ~P2P_DEV_PROBE_REQ_ONLY;
1491                 p2p_dbg(p2p, "Completed device entry based on data from GO Negotiation Request");
1492         } else {
1493                 p2p_dbg(p2p, "Created device entry based on GO Neg Req: "
1494                         MACSTR " dev_capab=0x%x group_capab=0x%x name='%s' "
1495                         "listen_freq=%d",
1496                         MAC2STR(dev->info.p2p_device_addr),
1497                         dev->info.dev_capab, dev->info.group_capab,
1498                         dev->info.device_name, dev->listen_freq);
1499         }
1500
1501         dev->flags &= ~P2P_DEV_GROUP_CLIENT_ONLY;
1502
1503         if (dev->flags & P2P_DEV_USER_REJECTED) {
1504                 p2p_dbg(p2p, "Do not report rejected device");
1505                 return;
1506         }
1507
1508         p2p->cfg->dev_found(p2p->cfg->cb_ctx, addr, &dev->info,
1509                             !(dev->flags & P2P_DEV_REPORTED_ONCE));
1510         dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
1511 }
1512
1513
1514 void p2p_build_ssid(struct p2p_data *p2p, u8 *ssid, size_t *ssid_len)
1515 {
1516         os_memcpy(ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
1517         p2p_random((char *) &ssid[P2P_WILDCARD_SSID_LEN], 2);
1518         os_memcpy(&ssid[P2P_WILDCARD_SSID_LEN + 2],
1519                   p2p->cfg->ssid_postfix, p2p->cfg->ssid_postfix_len);
1520         *ssid_len = P2P_WILDCARD_SSID_LEN + 2 + p2p->cfg->ssid_postfix_len;
1521 }
1522
1523
1524 int p2p_go_params(struct p2p_data *p2p, struct p2p_go_neg_results *params)
1525 {
1526         p2p_build_ssid(p2p, params->ssid, &params->ssid_len);
1527         p2p_random(params->passphrase, 8);
1528         return 0;
1529 }
1530
1531
1532 void p2p_go_complete(struct p2p_data *p2p, struct p2p_device *peer)
1533 {
1534         struct p2p_go_neg_results res;
1535         int go = peer->go_state == LOCAL_GO;
1536         struct p2p_channels intersection;
1537         int freqs;
1538         size_t i, j;
1539
1540         p2p_dbg(p2p, "GO Negotiation with " MACSTR " completed (%s will be GO)",
1541                 MAC2STR(peer->info.p2p_device_addr), go ? "local end" : "peer");
1542
1543         os_memset(&res, 0, sizeof(res));
1544         res.role_go = go;
1545         os_memcpy(res.peer_device_addr, peer->info.p2p_device_addr, ETH_ALEN);
1546         os_memcpy(res.peer_interface_addr, peer->intended_addr, ETH_ALEN);
1547         res.wps_method = peer->wps_method;
1548         if (peer->flags & P2P_DEV_PREFER_PERSISTENT_GROUP) {
1549                 if (peer->flags & P2P_DEV_PREFER_PERSISTENT_RECONN)
1550                         res.persistent_group = 2;
1551                 else
1552                         res.persistent_group = 1;
1553         }
1554
1555         if (go) {
1556                 /* Setup AP mode for WPS provisioning */
1557                 res.freq = p2p_channel_to_freq(p2p->op_reg_class,
1558                                                p2p->op_channel);
1559                 os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1560                 res.ssid_len = p2p->ssid_len;
1561                 p2p_random(res.passphrase, 8);
1562         } else {
1563                 res.freq = peer->oper_freq;
1564                 if (p2p->ssid_len) {
1565                         os_memcpy(res.ssid, p2p->ssid, p2p->ssid_len);
1566                         res.ssid_len = p2p->ssid_len;
1567                 }
1568         }
1569
1570         p2p_channels_dump(p2p, "own channels", &p2p->channels);
1571         p2p_channels_dump(p2p, "peer channels", &peer->channels);
1572         p2p_channels_intersect(&p2p->channels, &peer->channels,
1573                                &intersection);
1574         if (go) {
1575                 p2p_channels_remove_freqs(&intersection, &p2p->no_go_freq);
1576                 p2p_channels_dump(p2p, "intersection after no-GO removal",
1577                                   &intersection);
1578         }
1579         freqs = 0;
1580         for (i = 0; i < intersection.reg_classes; i++) {
1581                 struct p2p_reg_class *c = &intersection.reg_class[i];
1582                 if (freqs + 1 == P2P_MAX_CHANNELS)
1583                         break;
1584                 for (j = 0; j < c->channels; j++) {
1585                         int freq;
1586                         if (freqs + 1 == P2P_MAX_CHANNELS)
1587                                 break;
1588                         freq = p2p_channel_to_freq(c->reg_class, c->channel[j]);
1589                         if (freq < 0)
1590                                 continue;
1591                         res.freq_list[freqs++] = freq;
1592                 }
1593         }
1594
1595         res.peer_config_timeout = go ? peer->client_timeout : peer->go_timeout;
1596
1597         p2p_clear_timeout(p2p);
1598         p2p->ssid_set = 0;
1599         peer->go_neg_req_sent = 0;
1600         peer->wps_method = WPS_NOT_READY;
1601         peer->oob_pw_id = 0;
1602
1603         p2p_set_state(p2p, P2P_PROVISIONING);
1604         p2p->cfg->go_neg_completed(p2p->cfg->cb_ctx, &res);
1605 }
1606
1607
1608 static void p2p_rx_p2p_action(struct p2p_data *p2p, const u8 *sa,
1609                               const u8 *data, size_t len, int rx_freq)
1610 {
1611         p2p_dbg(p2p, "RX P2P Public Action from " MACSTR, MAC2STR(sa));
1612         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Public Action contents", data, len);
1613
1614         if (len < 1)
1615                 return;
1616
1617         switch (data[0]) {
1618         case P2P_GO_NEG_REQ:
1619                 p2p_process_go_neg_req(p2p, sa, data + 1, len - 1, rx_freq);
1620                 break;
1621         case P2P_GO_NEG_RESP:
1622                 p2p_process_go_neg_resp(p2p, sa, data + 1, len - 1, rx_freq);
1623                 break;
1624         case P2P_GO_NEG_CONF:
1625                 p2p_process_go_neg_conf(p2p, sa, data + 1, len - 1);
1626                 break;
1627         case P2P_INVITATION_REQ:
1628                 p2p_process_invitation_req(p2p, sa, data + 1, len - 1,
1629                                            rx_freq);
1630                 break;
1631         case P2P_INVITATION_RESP:
1632                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
1633                 p2p_process_invitation_resp(p2p, sa, data + 1, len - 1);
1634                 break;
1635         case P2P_PROV_DISC_REQ:
1636                 p2p_process_prov_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1637                 break;
1638         case P2P_PROV_DISC_RESP:
1639                 p2p_process_prov_disc_resp(p2p, sa, data + 1, len - 1);
1640                 break;
1641         case P2P_DEV_DISC_REQ:
1642                 p2p_process_dev_disc_req(p2p, sa, data + 1, len - 1, rx_freq);
1643                 break;
1644         case P2P_DEV_DISC_RESP:
1645                 p2p_process_dev_disc_resp(p2p, sa, data + 1, len - 1);
1646                 break;
1647         default:
1648                 p2p_dbg(p2p, "Unsupported P2P Public Action frame type %d",
1649                         data[0]);
1650                 break;
1651         }
1652 }
1653
1654
1655 static void p2p_rx_action_public(struct p2p_data *p2p, const u8 *da,
1656                                  const u8 *sa, const u8 *bssid, const u8 *data,
1657                                  size_t len, int freq)
1658 {
1659         if (len < 1)
1660                 return;
1661
1662         switch (data[0]) {
1663         case WLAN_PA_VENDOR_SPECIFIC:
1664                 data++;
1665                 len--;
1666                 if (len < 3)
1667                         return;
1668                 if (WPA_GET_BE24(data) != OUI_WFA)
1669                         return;
1670
1671                 data += 3;
1672                 len -= 3;
1673                 if (len < 1)
1674                         return;
1675
1676                 if (*data != P2P_OUI_TYPE)
1677                         return;
1678
1679                 p2p_rx_p2p_action(p2p, sa, data + 1, len - 1, freq);
1680                 break;
1681         case WLAN_PA_GAS_INITIAL_REQ:
1682                 p2p_rx_gas_initial_req(p2p, sa, data + 1, len - 1, freq);
1683                 break;
1684         case WLAN_PA_GAS_INITIAL_RESP:
1685                 p2p_rx_gas_initial_resp(p2p, sa, data + 1, len - 1, freq);
1686                 break;
1687         case WLAN_PA_GAS_COMEBACK_REQ:
1688                 p2p_rx_gas_comeback_req(p2p, sa, data + 1, len - 1, freq);
1689                 break;
1690         case WLAN_PA_GAS_COMEBACK_RESP:
1691                 p2p_rx_gas_comeback_resp(p2p, sa, data + 1, len - 1, freq);
1692                 break;
1693         }
1694 }
1695
1696
1697 void p2p_rx_action(struct p2p_data *p2p, const u8 *da, const u8 *sa,
1698                    const u8 *bssid, u8 category,
1699                    const u8 *data, size_t len, int freq)
1700 {
1701         if (category == WLAN_ACTION_PUBLIC) {
1702                 p2p_rx_action_public(p2p, da, sa, bssid, data, len, freq);
1703                 return;
1704         }
1705
1706         if (category != WLAN_ACTION_VENDOR_SPECIFIC)
1707                 return;
1708
1709         if (len < 4)
1710                 return;
1711
1712         if (WPA_GET_BE24(data) != OUI_WFA)
1713                 return;
1714         data += 3;
1715         len -= 3;
1716
1717         if (*data != P2P_OUI_TYPE)
1718                 return;
1719         data++;
1720         len--;
1721
1722         /* P2P action frame */
1723         p2p_dbg(p2p, "RX P2P Action from " MACSTR, MAC2STR(sa));
1724         wpa_hexdump(MSG_MSGDUMP, "P2P: P2P Action contents", data, len);
1725
1726         if (len < 1)
1727                 return;
1728         switch (data[0]) {
1729         case P2P_NOA:
1730                 p2p_dbg(p2p, "Received P2P Action - Notice of Absence");
1731                 /* TODO */
1732                 break;
1733         case P2P_PRESENCE_REQ:
1734                 p2p_process_presence_req(p2p, da, sa, data + 1, len - 1, freq);
1735                 break;
1736         case P2P_PRESENCE_RESP:
1737                 p2p_process_presence_resp(p2p, da, sa, data + 1, len - 1);
1738                 break;
1739         case P2P_GO_DISC_REQ:
1740                 p2p_process_go_disc_req(p2p, da, sa, data + 1, len - 1, freq);
1741                 break;
1742         default:
1743                 p2p_dbg(p2p, "Received P2P Action - unknown type %u", data[0]);
1744                 break;
1745         }
1746 }
1747
1748
1749 static void p2p_go_neg_start(void *eloop_ctx, void *timeout_ctx)
1750 {
1751         struct p2p_data *p2p = eloop_ctx;
1752         if (p2p->go_neg_peer == NULL)
1753                 return;
1754         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1755         p2p->go_neg_peer->status = P2P_SC_SUCCESS;
1756         p2p_connect_send(p2p, p2p->go_neg_peer);
1757 }
1758
1759
1760 static void p2p_invite_start(void *eloop_ctx, void *timeout_ctx)
1761 {
1762         struct p2p_data *p2p = eloop_ctx;
1763         if (p2p->invite_peer == NULL)
1764                 return;
1765         p2p->cfg->stop_listen(p2p->cfg->cb_ctx);
1766         p2p_invite_send(p2p, p2p->invite_peer, p2p->invite_go_dev_addr,
1767                         p2p->invite_dev_pw_id);
1768 }
1769
1770
1771 static void p2p_add_dev_from_probe_req(struct p2p_data *p2p, const u8 *addr,
1772                                        const u8 *ie, size_t ie_len)
1773 {
1774         struct p2p_message msg;
1775         struct p2p_device *dev;
1776
1777         os_memset(&msg, 0, sizeof(msg));
1778         if (p2p_parse_ies(ie, ie_len, &msg) < 0 || msg.p2p_attributes == NULL)
1779         {
1780                 p2p_parse_free(&msg);
1781                 return; /* not a P2P probe */
1782         }
1783
1784         if (msg.ssid == NULL || msg.ssid[1] != P2P_WILDCARD_SSID_LEN ||
1785             os_memcmp(msg.ssid + 2, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN)
1786             != 0) {
1787                 /* The Probe Request is not part of P2P Device Discovery. It is
1788                  * not known whether the source address of the frame is the P2P
1789                  * Device Address or P2P Interface Address. Do not add a new
1790                  * peer entry based on this frames.
1791                  */
1792                 p2p_parse_free(&msg);
1793                 return;
1794         }
1795
1796         dev = p2p_get_device(p2p, addr);
1797         if (dev) {
1798                 if (dev->country[0] == 0 && msg.listen_channel)
1799                         os_memcpy(dev->country, msg.listen_channel, 3);
1800                 os_get_reltime(&dev->last_seen);
1801                 p2p_parse_free(&msg);
1802                 return; /* already known */
1803         }
1804
1805         dev = p2p_create_device(p2p, addr);
1806         if (dev == NULL) {
1807                 p2p_parse_free(&msg);
1808                 return;
1809         }
1810
1811         os_get_reltime(&dev->last_seen);
1812         dev->flags |= P2P_DEV_PROBE_REQ_ONLY;
1813
1814         if (msg.listen_channel) {
1815                 os_memcpy(dev->country, msg.listen_channel, 3);
1816                 dev->listen_freq = p2p_channel_to_freq(msg.listen_channel[3],
1817                                                        msg.listen_channel[4]);
1818         }
1819
1820         p2p_copy_wps_info(p2p, dev, 1, &msg);
1821
1822         if (msg.wfd_subelems) {
1823                 wpabuf_free(dev->info.wfd_subelems);
1824                 dev->info.wfd_subelems = wpabuf_dup(msg.wfd_subelems);
1825         }
1826
1827         p2p_parse_free(&msg);
1828
1829         p2p_dbg(p2p, "Created device entry based on Probe Req: " MACSTR
1830                 " dev_capab=0x%x group_capab=0x%x name='%s' listen_freq=%d",
1831                 MAC2STR(dev->info.p2p_device_addr), dev->info.dev_capab,
1832                 dev->info.group_capab, dev->info.device_name,
1833                 dev->listen_freq);
1834 }
1835
1836
1837 struct p2p_device * p2p_add_dev_from_go_neg_req(struct p2p_data *p2p,
1838                                                 const u8 *addr,
1839                                                 struct p2p_message *msg)
1840 {
1841         struct p2p_device *dev;
1842
1843         dev = p2p_get_device(p2p, addr);
1844         if (dev) {
1845                 os_get_reltime(&dev->last_seen);
1846                 return dev; /* already known */
1847         }
1848
1849         dev = p2p_create_device(p2p, addr);
1850         if (dev == NULL)
1851                 return NULL;
1852
1853         p2p_add_dev_info(p2p, addr, dev, msg);
1854
1855         return dev;
1856 }
1857
1858
1859 static int dev_type_match(const u8 *dev_type, const u8 *req_dev_type)
1860 {
1861         if (os_memcmp(dev_type, req_dev_type, WPS_DEV_TYPE_LEN) == 0)
1862                 return 1;
1863         if (os_memcmp(dev_type, req_dev_type, 2) == 0 &&
1864             WPA_GET_BE32(&req_dev_type[2]) == 0 &&
1865             WPA_GET_BE16(&req_dev_type[6]) == 0)
1866                 return 1; /* Category match with wildcard OUI/sub-category */
1867         return 0;
1868 }
1869
1870
1871 int dev_type_list_match(const u8 *dev_type, const u8 *req_dev_type[],
1872                         size_t num_req_dev_type)
1873 {
1874         size_t i;
1875         for (i = 0; i < num_req_dev_type; i++) {
1876                 if (dev_type_match(dev_type, req_dev_type[i]))
1877                         return 1;
1878         }
1879         return 0;
1880 }
1881
1882
1883 /**
1884  * p2p_match_dev_type - Match local device type with requested type
1885  * @p2p: P2P module context from p2p_init()
1886  * @wps: WPS TLVs from Probe Request frame (concatenated WPS IEs)
1887  * Returns: 1 on match, 0 on mismatch
1888  *
1889  * This function can be used to match the Requested Device Type attribute in
1890  * WPS IE with the local device types for deciding whether to reply to a Probe
1891  * Request frame.
1892  */
1893 int p2p_match_dev_type(struct p2p_data *p2p, struct wpabuf *wps)
1894 {
1895         struct wps_parse_attr attr;
1896         size_t i;
1897
1898         if (wps_parse_msg(wps, &attr))
1899                 return 1; /* assume no Requested Device Type attributes */
1900
1901         if (attr.num_req_dev_type == 0)
1902                 return 1; /* no Requested Device Type attributes -> match */
1903
1904         if (dev_type_list_match(p2p->cfg->pri_dev_type, attr.req_dev_type,
1905                                 attr.num_req_dev_type))
1906                 return 1; /* Own Primary Device Type matches */
1907
1908         for (i = 0; i < p2p->cfg->num_sec_dev_types; i++)
1909                 if (dev_type_list_match(p2p->cfg->sec_dev_type[i],
1910                                         attr.req_dev_type,
1911                                         attr.num_req_dev_type))
1912                 return 1; /* Own Secondary Device Type matches */
1913
1914         /* No matching device type found */
1915         return 0;
1916 }
1917
1918
1919 struct wpabuf * p2p_build_probe_resp_ies(struct p2p_data *p2p)
1920 {
1921         struct wpabuf *buf;
1922         u8 *len;
1923         int pw_id = -1;
1924         size_t extra = 0;
1925
1926 #ifdef CONFIG_WIFI_DISPLAY
1927         if (p2p->wfd_ie_probe_resp)
1928                 extra = wpabuf_len(p2p->wfd_ie_probe_resp);
1929 #endif /* CONFIG_WIFI_DISPLAY */
1930
1931         buf = wpabuf_alloc(1000 + extra);
1932         if (buf == NULL)
1933                 return NULL;
1934
1935         if (p2p->go_neg_peer) {
1936                 /* Advertise immediate availability of WPS credential */
1937                 pw_id = p2p_wps_method_pw_id(p2p->go_neg_peer->wps_method);
1938         }
1939
1940         if (p2p_build_wps_ie(p2p, buf, pw_id, 1) < 0) {
1941                 p2p_dbg(p2p, "Failed to build WPS IE for Probe Response");
1942                 wpabuf_free(buf);
1943                 return NULL;
1944         }
1945
1946 #ifdef CONFIG_WIFI_DISPLAY
1947         if (p2p->wfd_ie_probe_resp)
1948                 wpabuf_put_buf(buf, p2p->wfd_ie_probe_resp);
1949 #endif /* CONFIG_WIFI_DISPLAY */
1950
1951         /* P2P IE */
1952         len = p2p_buf_add_ie_hdr(buf);
1953         p2p_buf_add_capability(buf, p2p->dev_capab &
1954                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
1955         if (p2p->ext_listen_interval)
1956                 p2p_buf_add_ext_listen_timing(buf, p2p->ext_listen_period,
1957                                               p2p->ext_listen_interval);
1958         p2p_buf_add_device_info(buf, p2p, NULL);
1959         p2p_buf_update_ie_hdr(buf, len);
1960
1961         return buf;
1962 }
1963
1964
1965 static enum p2p_probe_req_status
1966 p2p_reply_probe(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
1967                 const u8 *bssid, const u8 *ie, size_t ie_len)
1968 {
1969         struct ieee802_11_elems elems;
1970         struct wpabuf *buf;
1971         struct ieee80211_mgmt *resp;
1972         struct p2p_message msg;
1973         struct wpabuf *ies;
1974
1975         if (!p2p->in_listen || !p2p->drv_in_listen) {
1976                 /* not in Listen state - ignore Probe Request */
1977                 return P2P_PREQ_NOT_LISTEN;
1978         }
1979
1980         if (ieee802_11_parse_elems((u8 *) ie, ie_len, &elems, 0) ==
1981             ParseFailed) {
1982                 /* Ignore invalid Probe Request frames */
1983                 return P2P_PREQ_MALFORMED;
1984         }
1985
1986         if (elems.p2p == NULL) {
1987                 /* not a P2P probe - ignore it */
1988                 return P2P_PREQ_NOT_P2P;
1989         }
1990
1991         if (dst && !is_broadcast_ether_addr(dst) &&
1992             os_memcmp(dst, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
1993                 /* Not sent to the broadcast address or our P2P Device Address
1994                  */
1995                 return P2P_PREQ_NOT_PROCESSED;
1996         }
1997
1998         if (bssid && !is_broadcast_ether_addr(bssid)) {
1999                 /* Not sent to the Wildcard BSSID */
2000                 return P2P_PREQ_NOT_PROCESSED;
2001         }
2002
2003         if (elems.ssid == NULL || elems.ssid_len != P2P_WILDCARD_SSID_LEN ||
2004             os_memcmp(elems.ssid, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN) !=
2005             0) {
2006                 /* not using P2P Wildcard SSID - ignore */
2007                 return P2P_PREQ_NOT_PROCESSED;
2008         }
2009
2010         if (supp_rates_11b_only(&elems)) {
2011                 /* Indicates support for 11b rates only */
2012                 return P2P_PREQ_NOT_P2P;
2013         }
2014
2015         os_memset(&msg, 0, sizeof(msg));
2016         if (p2p_parse_ies(ie, ie_len, &msg) < 0) {
2017                 /* Could not parse P2P attributes */
2018                 return P2P_PREQ_NOT_P2P;
2019         }
2020
2021         if (msg.device_id &&
2022             os_memcmp(msg.device_id, p2p->cfg->dev_addr, ETH_ALEN) != 0) {
2023                 /* Device ID did not match */
2024                 p2p_parse_free(&msg);
2025                 return P2P_PREQ_NOT_PROCESSED;
2026         }
2027
2028         /* Check Requested Device Type match */
2029         if (msg.wps_attributes &&
2030             !p2p_match_dev_type(p2p, msg.wps_attributes)) {
2031                 /* No match with Requested Device Type */
2032                 p2p_parse_free(&msg);
2033                 return P2P_PREQ_NOT_PROCESSED;
2034         }
2035         p2p_parse_free(&msg);
2036
2037         if (!p2p->cfg->send_probe_resp) {
2038                 /* Response generated elsewhere */
2039                 return P2P_PREQ_NOT_PROCESSED;
2040         }
2041
2042         p2p_dbg(p2p, "Reply to P2P Probe Request in Listen state");
2043
2044         /*
2045          * We do not really have a specific BSS that this frame is advertising,
2046          * so build a frame that has some information in valid format. This is
2047          * really only used for discovery purposes, not to learn exact BSS
2048          * parameters.
2049          */
2050         ies = p2p_build_probe_resp_ies(p2p);
2051         if (ies == NULL)
2052                 return P2P_PREQ_NOT_PROCESSED;
2053
2054         buf = wpabuf_alloc(200 + wpabuf_len(ies));
2055         if (buf == NULL) {
2056                 wpabuf_free(ies);
2057                 return P2P_PREQ_NOT_PROCESSED;
2058         }
2059
2060         resp = NULL;
2061         resp = wpabuf_put(buf, resp->u.probe_resp.variable - (u8 *) resp);
2062
2063         resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
2064                                            (WLAN_FC_STYPE_PROBE_RESP << 4));
2065         os_memcpy(resp->da, addr, ETH_ALEN);
2066         os_memcpy(resp->sa, p2p->cfg->dev_addr, ETH_ALEN);
2067         os_memcpy(resp->bssid, p2p->cfg->dev_addr, ETH_ALEN);
2068         resp->u.probe_resp.beacon_int = host_to_le16(100);
2069         /* hardware or low-level driver will setup seq_ctrl and timestamp */
2070         resp->u.probe_resp.capab_info =
2071                 host_to_le16(WLAN_CAPABILITY_SHORT_PREAMBLE |
2072                              WLAN_CAPABILITY_PRIVACY |
2073                              WLAN_CAPABILITY_SHORT_SLOT_TIME);
2074
2075         wpabuf_put_u8(buf, WLAN_EID_SSID);
2076         wpabuf_put_u8(buf, P2P_WILDCARD_SSID_LEN);
2077         wpabuf_put_data(buf, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
2078
2079         wpabuf_put_u8(buf, WLAN_EID_SUPP_RATES);
2080         wpabuf_put_u8(buf, 8);
2081         wpabuf_put_u8(buf, (60 / 5) | 0x80);
2082         wpabuf_put_u8(buf, 90 / 5);
2083         wpabuf_put_u8(buf, (120 / 5) | 0x80);
2084         wpabuf_put_u8(buf, 180 / 5);
2085         wpabuf_put_u8(buf, (240 / 5) | 0x80);
2086         wpabuf_put_u8(buf, 360 / 5);
2087         wpabuf_put_u8(buf, 480 / 5);
2088         wpabuf_put_u8(buf, 540 / 5);
2089
2090         wpabuf_put_u8(buf, WLAN_EID_DS_PARAMS);
2091         wpabuf_put_u8(buf, 1);
2092         wpabuf_put_u8(buf, p2p->cfg->channel);
2093
2094         wpabuf_put_buf(buf, ies);
2095         wpabuf_free(ies);
2096
2097         p2p->cfg->send_probe_resp(p2p->cfg->cb_ctx, buf);
2098
2099         wpabuf_free(buf);
2100
2101         return P2P_PREQ_NOT_PROCESSED;
2102 }
2103
2104
2105 enum p2p_probe_req_status
2106 p2p_probe_req_rx(struct p2p_data *p2p, const u8 *addr, const u8 *dst,
2107                  const u8 *bssid, const u8 *ie, size_t ie_len)
2108 {
2109         enum p2p_probe_req_status res;
2110
2111         p2p_add_dev_from_probe_req(p2p, addr, ie, ie_len);
2112
2113         res = p2p_reply_probe(p2p, addr, dst, bssid, ie, ie_len);
2114
2115         if ((p2p->state == P2P_CONNECT || p2p->state == P2P_CONNECT_LISTEN) &&
2116             p2p->go_neg_peer &&
2117             os_memcmp(addr, p2p->go_neg_peer->info.p2p_device_addr, ETH_ALEN)
2118             == 0 &&
2119             !(p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
2120                 /* Received a Probe Request from GO Negotiation peer */
2121                 p2p_dbg(p2p, "Found GO Negotiation peer - try to start GO negotiation from timeout");
2122                 eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2123                 eloop_register_timeout(0, 0, p2p_go_neg_start, p2p, NULL);
2124                 return P2P_PREQ_PROCESSED;
2125         }
2126
2127         if ((p2p->state == P2P_INVITE || p2p->state == P2P_INVITE_LISTEN) &&
2128             p2p->invite_peer &&
2129             (p2p->invite_peer->flags & P2P_DEV_WAIT_INV_REQ_ACK) &&
2130             os_memcmp(addr, p2p->invite_peer->info.p2p_device_addr, ETH_ALEN)
2131             == 0) {
2132                 /* Received a Probe Request from Invite peer */
2133                 p2p_dbg(p2p, "Found Invite peer - try to start Invite from timeout");
2134                 eloop_register_timeout(0, 0, p2p_invite_start, p2p, NULL);
2135                 return P2P_PREQ_PROCESSED;
2136         }
2137
2138         return res;
2139 }
2140
2141
2142 static int p2p_assoc_req_ie_wlan_ap(struct p2p_data *p2p, const u8 *bssid,
2143                                     u8 *buf, size_t len, struct wpabuf *p2p_ie)
2144 {
2145         struct wpabuf *tmp;
2146         u8 *lpos;
2147         size_t tmplen;
2148         int res;
2149         u8 group_capab;
2150
2151         if (p2p_ie == NULL)
2152                 return 0; /* WLAN AP is not a P2P manager */
2153
2154         /*
2155          * (Re)Association Request - P2P IE
2156          * P2P Capability attribute (shall be present)
2157          * P2P Interface attribute (present if concurrent device and
2158          *      P2P Management is enabled)
2159          */
2160         tmp = wpabuf_alloc(200);
2161         if (tmp == NULL)
2162                 return -1;
2163
2164         lpos = p2p_buf_add_ie_hdr(tmp);
2165         group_capab = 0;
2166         if (p2p->num_groups > 0) {
2167                 group_capab |= P2P_GROUP_CAPAB_GROUP_OWNER;
2168                 if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2169                     (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED) &&
2170                     p2p->cross_connect)
2171                         group_capab |= P2P_GROUP_CAPAB_CROSS_CONN;
2172         }
2173         p2p_buf_add_capability(tmp, p2p->dev_capab, group_capab);
2174         if ((p2p->dev_capab & P2P_DEV_CAPAB_CONCURRENT_OPER) &&
2175             (p2p->dev_capab & P2P_DEV_CAPAB_INFRA_MANAGED))
2176                 p2p_buf_add_p2p_interface(tmp, p2p);
2177         p2p_buf_update_ie_hdr(tmp, lpos);
2178
2179         tmplen = wpabuf_len(tmp);
2180         if (tmplen > len)
2181                 res = -1;
2182         else {
2183                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2184                 res = tmplen;
2185         }
2186         wpabuf_free(tmp);
2187
2188         return res;
2189 }
2190
2191
2192 int p2p_assoc_req_ie(struct p2p_data *p2p, const u8 *bssid, u8 *buf,
2193                      size_t len, int p2p_group, struct wpabuf *p2p_ie)
2194 {
2195         struct wpabuf *tmp;
2196         u8 *lpos;
2197         struct p2p_device *peer;
2198         size_t tmplen;
2199         int res;
2200         size_t extra = 0;
2201
2202         if (!p2p_group)
2203                 return p2p_assoc_req_ie_wlan_ap(p2p, bssid, buf, len, p2p_ie);
2204
2205 #ifdef CONFIG_WIFI_DISPLAY
2206         if (p2p->wfd_ie_assoc_req)
2207                 extra = wpabuf_len(p2p->wfd_ie_assoc_req);
2208 #endif /* CONFIG_WIFI_DISPLAY */
2209
2210         /*
2211          * (Re)Association Request - P2P IE
2212          * P2P Capability attribute (shall be present)
2213          * Extended Listen Timing (may be present)
2214          * P2P Device Info attribute (shall be present)
2215          */
2216         tmp = wpabuf_alloc(200 + extra);
2217         if (tmp == NULL)
2218                 return -1;
2219
2220 #ifdef CONFIG_WIFI_DISPLAY
2221         if (p2p->wfd_ie_assoc_req)
2222                 wpabuf_put_buf(tmp, p2p->wfd_ie_assoc_req);
2223 #endif /* CONFIG_WIFI_DISPLAY */
2224
2225         peer = bssid ? p2p_get_device(p2p, bssid) : NULL;
2226
2227         lpos = p2p_buf_add_ie_hdr(tmp);
2228         p2p_buf_add_capability(tmp, p2p->dev_capab, 0);
2229         if (p2p->ext_listen_interval)
2230                 p2p_buf_add_ext_listen_timing(tmp, p2p->ext_listen_period,
2231                                               p2p->ext_listen_interval);
2232         p2p_buf_add_device_info(tmp, p2p, peer);
2233         p2p_buf_update_ie_hdr(tmp, lpos);
2234
2235         tmplen = wpabuf_len(tmp);
2236         if (tmplen > len)
2237                 res = -1;
2238         else {
2239                 os_memcpy(buf, wpabuf_head(tmp), tmplen);
2240                 res = tmplen;
2241         }
2242         wpabuf_free(tmp);
2243
2244         return res;
2245 }
2246
2247
2248 int p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf, char *end)
2249 {
2250         struct wpabuf *p2p_ie;
2251         int ret;
2252
2253         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len, P2P_IE_VENDOR_TYPE);
2254         if (p2p_ie == NULL)
2255                 return 0;
2256
2257         ret = p2p_attr_text(p2p_ie, buf, end);
2258         wpabuf_free(p2p_ie);
2259         return ret;
2260 }
2261
2262
2263 int p2p_parse_dev_addr_in_p2p_ie(struct wpabuf *p2p_ie, u8 *dev_addr)
2264 {
2265         struct p2p_message msg;
2266
2267         os_memset(&msg, 0, sizeof(msg));
2268         if (p2p_parse_p2p_ie(p2p_ie, &msg))
2269                 return -1;
2270
2271         if (msg.p2p_device_addr) {
2272                 os_memcpy(dev_addr, msg.p2p_device_addr, ETH_ALEN);
2273                 return 0;
2274         } else if (msg.device_id) {
2275                 os_memcpy(dev_addr, msg.device_id, ETH_ALEN);
2276                 return 0;
2277         }
2278         return -1;
2279 }
2280
2281
2282 int p2p_parse_dev_addr(const u8 *ies, size_t ies_len, u8 *dev_addr)
2283 {
2284         struct wpabuf *p2p_ie;
2285         int ret;
2286
2287         p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
2288                                              P2P_IE_VENDOR_TYPE);
2289         if (p2p_ie == NULL)
2290                 return -1;
2291         ret = p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr);
2292         wpabuf_free(p2p_ie);
2293         return ret;
2294 }
2295
2296
2297 static void p2p_clear_go_neg(struct p2p_data *p2p)
2298 {
2299         p2p->go_neg_peer = NULL;
2300         p2p_clear_timeout(p2p);
2301         p2p_set_state(p2p, P2P_IDLE);
2302 }
2303
2304
2305 void p2p_wps_success_cb(struct p2p_data *p2p, const u8 *mac_addr)
2306 {
2307         if (p2p->go_neg_peer == NULL) {
2308                 p2p_dbg(p2p, "No pending Group Formation - ignore WPS registration success notification");
2309                 return; /* No pending Group Formation */
2310         }
2311
2312         if (os_memcmp(mac_addr, p2p->go_neg_peer->intended_addr, ETH_ALEN) !=
2313             0) {
2314                 p2p_dbg(p2p, "Ignore WPS registration success notification for "
2315                         MACSTR " (GO Negotiation peer " MACSTR ")",
2316                         MAC2STR(mac_addr),
2317                         MAC2STR(p2p->go_neg_peer->intended_addr));
2318                 return; /* Ignore unexpected peer address */
2319         }
2320
2321         p2p_dbg(p2p, "Group Formation completed successfully with " MACSTR,
2322                 MAC2STR(mac_addr));
2323
2324         p2p_clear_go_neg(p2p);
2325 }
2326
2327
2328 void p2p_group_formation_failed(struct p2p_data *p2p)
2329 {
2330         if (p2p->go_neg_peer == NULL) {
2331                 p2p_dbg(p2p, "No pending Group Formation - ignore group formation failure notification");
2332                 return; /* No pending Group Formation */
2333         }
2334
2335         p2p_dbg(p2p, "Group Formation failed with " MACSTR,
2336                 MAC2STR(p2p->go_neg_peer->intended_addr));
2337
2338         p2p_clear_go_neg(p2p);
2339 }
2340
2341
2342 struct p2p_data * p2p_init(const struct p2p_config *cfg)
2343 {
2344         struct p2p_data *p2p;
2345
2346         if (cfg->max_peers < 1)
2347                 return NULL;
2348
2349         p2p = os_zalloc(sizeof(*p2p) + sizeof(*cfg));
2350         if (p2p == NULL)
2351                 return NULL;
2352         p2p->cfg = (struct p2p_config *) (p2p + 1);
2353         os_memcpy(p2p->cfg, cfg, sizeof(*cfg));
2354         if (cfg->dev_name)
2355                 p2p->cfg->dev_name = os_strdup(cfg->dev_name);
2356         if (cfg->manufacturer)
2357                 p2p->cfg->manufacturer = os_strdup(cfg->manufacturer);
2358         if (cfg->model_name)
2359                 p2p->cfg->model_name = os_strdup(cfg->model_name);
2360         if (cfg->model_number)
2361                 p2p->cfg->model_number = os_strdup(cfg->model_number);
2362         if (cfg->serial_number)
2363                 p2p->cfg->serial_number = os_strdup(cfg->serial_number);
2364         if (cfg->pref_chan) {
2365                 p2p->cfg->pref_chan = os_malloc(cfg->num_pref_chan *
2366                                                 sizeof(struct p2p_channel));
2367                 if (p2p->cfg->pref_chan) {
2368                         os_memcpy(p2p->cfg->pref_chan, cfg->pref_chan,
2369                                   cfg->num_pref_chan *
2370                                   sizeof(struct p2p_channel));
2371                 } else
2372                         p2p->cfg->num_pref_chan = 0;
2373         }
2374
2375         p2p->min_disc_int = 1;
2376         p2p->max_disc_int = 3;
2377         p2p->max_disc_tu = -1;
2378
2379         os_get_random(&p2p->next_tie_breaker, 1);
2380         p2p->next_tie_breaker &= 0x01;
2381         if (cfg->sd_request)
2382                 p2p->dev_capab |= P2P_DEV_CAPAB_SERVICE_DISCOVERY;
2383         p2p->dev_capab |= P2P_DEV_CAPAB_INVITATION_PROCEDURE;
2384         if (cfg->concurrent_operations)
2385                 p2p->dev_capab |= P2P_DEV_CAPAB_CONCURRENT_OPER;
2386         p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
2387
2388         dl_list_init(&p2p->devices);
2389
2390         eloop_register_timeout(P2P_PEER_EXPIRATION_INTERVAL, 0,
2391                                p2p_expiration_timeout, p2p, NULL);
2392
2393         p2p->go_timeout = 100;
2394         p2p->client_timeout = 20;
2395
2396         p2p_dbg(p2p, "initialized");
2397         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
2398         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
2399
2400         return p2p;
2401 }
2402
2403
2404 void p2p_deinit(struct p2p_data *p2p)
2405 {
2406 #ifdef CONFIG_WIFI_DISPLAY
2407         wpabuf_free(p2p->wfd_ie_beacon);
2408         wpabuf_free(p2p->wfd_ie_probe_req);
2409         wpabuf_free(p2p->wfd_ie_probe_resp);
2410         wpabuf_free(p2p->wfd_ie_assoc_req);
2411         wpabuf_free(p2p->wfd_ie_invitation);
2412         wpabuf_free(p2p->wfd_ie_prov_disc_req);
2413         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
2414         wpabuf_free(p2p->wfd_ie_go_neg);
2415         wpabuf_free(p2p->wfd_dev_info);
2416         wpabuf_free(p2p->wfd_assoc_bssid);
2417         wpabuf_free(p2p->wfd_coupled_sink_info);
2418 #endif /* CONFIG_WIFI_DISPLAY */
2419
2420         eloop_cancel_timeout(p2p_expiration_timeout, p2p, NULL);
2421         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
2422         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2423         eloop_cancel_timeout(p2p_go_neg_start, p2p, NULL);
2424         p2p_flush(p2p);
2425         p2p_free_req_dev_types(p2p);
2426         os_free(p2p->cfg->dev_name);
2427         os_free(p2p->cfg->manufacturer);
2428         os_free(p2p->cfg->model_name);
2429         os_free(p2p->cfg->model_number);
2430         os_free(p2p->cfg->serial_number);
2431         os_free(p2p->cfg->pref_chan);
2432         os_free(p2p->groups);
2433         wpabuf_free(p2p->sd_resp);
2434         os_free(p2p->after_scan_tx);
2435         p2p_remove_wps_vendor_extensions(p2p);
2436         os_free(p2p->no_go_freq.range);
2437         os_free(p2p);
2438 }
2439
2440
2441 void p2p_flush(struct p2p_data *p2p)
2442 {
2443         struct p2p_device *dev, *prev;
2444         p2p_stop_find(p2p);
2445         dl_list_for_each_safe(dev, prev, &p2p->devices, struct p2p_device,
2446                               list) {
2447                 dl_list_del(&dev->list);
2448                 p2p_device_free(p2p, dev);
2449         }
2450         p2p_free_sd_queries(p2p);
2451         os_free(p2p->after_scan_tx);
2452         p2p->after_scan_tx = NULL;
2453 }
2454
2455
2456 int p2p_unauthorize(struct p2p_data *p2p, const u8 *addr)
2457 {
2458         struct p2p_device *dev;
2459
2460         dev = p2p_get_device(p2p, addr);
2461         if (dev == NULL)
2462                 return -1;
2463
2464         p2p_dbg(p2p, "Unauthorizing " MACSTR, MAC2STR(addr));
2465
2466         if (p2p->go_neg_peer == dev)
2467                 p2p->go_neg_peer = NULL;
2468
2469         dev->wps_method = WPS_NOT_READY;
2470         dev->oob_pw_id = 0;
2471         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_RESPONSE;
2472         dev->flags &= ~P2P_DEV_WAIT_GO_NEG_CONFIRM;
2473
2474         /* Check if after_scan_tx is for this peer. If so free it */
2475         if (p2p->after_scan_tx &&
2476             os_memcmp(addr, p2p->after_scan_tx->dst, ETH_ALEN) == 0) {
2477                 os_free(p2p->after_scan_tx);
2478                 p2p->after_scan_tx = NULL;
2479         }
2480
2481         return 0;
2482 }
2483
2484
2485 int p2p_set_dev_name(struct p2p_data *p2p, const char *dev_name)
2486 {
2487         os_free(p2p->cfg->dev_name);
2488         if (dev_name) {
2489                 p2p->cfg->dev_name = os_strdup(dev_name);
2490                 if (p2p->cfg->dev_name == NULL)
2491                         return -1;
2492         } else
2493                 p2p->cfg->dev_name = NULL;
2494         return 0;
2495 }
2496
2497
2498 int p2p_set_manufacturer(struct p2p_data *p2p, const char *manufacturer)
2499 {
2500         os_free(p2p->cfg->manufacturer);
2501         p2p->cfg->manufacturer = NULL;
2502         if (manufacturer) {
2503                 p2p->cfg->manufacturer = os_strdup(manufacturer);
2504                 if (p2p->cfg->manufacturer == NULL)
2505                         return -1;
2506         }
2507
2508         return 0;
2509 }
2510
2511
2512 int p2p_set_model_name(struct p2p_data *p2p, const char *model_name)
2513 {
2514         os_free(p2p->cfg->model_name);
2515         p2p->cfg->model_name = NULL;
2516         if (model_name) {
2517                 p2p->cfg->model_name = os_strdup(model_name);
2518                 if (p2p->cfg->model_name == NULL)
2519                         return -1;
2520         }
2521
2522         return 0;
2523 }
2524
2525
2526 int p2p_set_model_number(struct p2p_data *p2p, const char *model_number)
2527 {
2528         os_free(p2p->cfg->model_number);
2529         p2p->cfg->model_number = NULL;
2530         if (model_number) {
2531                 p2p->cfg->model_number = os_strdup(model_number);
2532                 if (p2p->cfg->model_number == NULL)
2533                         return -1;
2534         }
2535
2536         return 0;
2537 }
2538
2539
2540 int p2p_set_serial_number(struct p2p_data *p2p, const char *serial_number)
2541 {
2542         os_free(p2p->cfg->serial_number);
2543         p2p->cfg->serial_number = NULL;
2544         if (serial_number) {
2545                 p2p->cfg->serial_number = os_strdup(serial_number);
2546                 if (p2p->cfg->serial_number == NULL)
2547                         return -1;
2548         }
2549
2550         return 0;
2551 }
2552
2553
2554 void p2p_set_config_methods(struct p2p_data *p2p, u16 config_methods)
2555 {
2556         p2p->cfg->config_methods = config_methods;
2557 }
2558
2559
2560 void p2p_set_uuid(struct p2p_data *p2p, const u8 *uuid)
2561 {
2562         os_memcpy(p2p->cfg->uuid, uuid, 16);
2563 }
2564
2565
2566 int p2p_set_pri_dev_type(struct p2p_data *p2p, const u8 *pri_dev_type)
2567 {
2568         os_memcpy(p2p->cfg->pri_dev_type, pri_dev_type, 8);
2569         return 0;
2570 }
2571
2572
2573 int p2p_set_sec_dev_types(struct p2p_data *p2p, const u8 dev_types[][8],
2574                           size_t num_dev_types)
2575 {
2576         if (num_dev_types > P2P_SEC_DEVICE_TYPES)
2577                 num_dev_types = P2P_SEC_DEVICE_TYPES;
2578         p2p->cfg->num_sec_dev_types = num_dev_types;
2579         os_memcpy(p2p->cfg->sec_dev_type, dev_types, num_dev_types * 8);
2580         return 0;
2581 }
2582
2583
2584 void p2p_remove_wps_vendor_extensions(struct p2p_data *p2p)
2585 {
2586         int i;
2587
2588         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2589                 wpabuf_free(p2p->wps_vendor_ext[i]);
2590                 p2p->wps_vendor_ext[i] = NULL;
2591         }
2592 }
2593
2594
2595 int p2p_add_wps_vendor_extension(struct p2p_data *p2p,
2596                                  const struct wpabuf *vendor_ext)
2597 {
2598         int i;
2599
2600         if (vendor_ext == NULL)
2601                 return -1;
2602
2603         for (i = 0; i < P2P_MAX_WPS_VENDOR_EXT; i++) {
2604                 if (p2p->wps_vendor_ext[i] == NULL)
2605                         break;
2606         }
2607         if (i >= P2P_MAX_WPS_VENDOR_EXT)
2608                 return -1;
2609
2610         p2p->wps_vendor_ext[i] = wpabuf_dup(vendor_ext);
2611         if (p2p->wps_vendor_ext[i] == NULL)
2612                 return -1;
2613
2614         return 0;
2615 }
2616
2617
2618 int p2p_set_country(struct p2p_data *p2p, const char *country)
2619 {
2620         os_memcpy(p2p->cfg->country, country, 3);
2621         return 0;
2622 }
2623
2624
2625 void p2p_continue_find(struct p2p_data *p2p)
2626 {
2627         struct p2p_device *dev;
2628         p2p_set_state(p2p, P2P_SEARCH);
2629         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2630                 if (dev->flags & P2P_DEV_SD_SCHEDULE) {
2631                         if (p2p_start_sd(p2p, dev) == 0)
2632                                 return;
2633                         else
2634                                 break;
2635                 } else if (dev->req_config_methods &&
2636                            !(dev->flags & P2P_DEV_PD_FOR_JOIN)) {
2637                         p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2638                                 MACSTR " (config methods 0x%x)",
2639                                 MAC2STR(dev->info.p2p_device_addr),
2640                                 dev->req_config_methods);
2641                         if (p2p_send_prov_disc_req(p2p, dev, 0, 0) == 0)
2642                                 return;
2643                 }
2644         }
2645
2646         p2p_listen_in_find(p2p, 1);
2647 }
2648
2649
2650 static void p2p_sd_cb(struct p2p_data *p2p, int success)
2651 {
2652         p2p_dbg(p2p, "Service Discovery Query TX callback: success=%d",
2653                 success);
2654         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2655
2656         if (!success) {
2657                 if (p2p->sd_peer) {
2658                         p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
2659                         p2p->sd_peer = NULL;
2660                 }
2661                 p2p_continue_find(p2p);
2662                 return;
2663         }
2664
2665         if (p2p->sd_peer == NULL) {
2666                 p2p_dbg(p2p, "No SD peer entry known");
2667                 p2p_continue_find(p2p);
2668                 return;
2669         }
2670
2671         /* Wait for response from the peer */
2672         p2p_set_state(p2p, P2P_SD_DURING_FIND);
2673         p2p_set_timeout(p2p, 0, 200000);
2674 }
2675
2676
2677 /**
2678  * p2p_retry_pd - Retry any pending provision disc requests in IDLE state
2679  * @p2p: P2P module context from p2p_init()
2680  */
2681 static void p2p_retry_pd(struct p2p_data *p2p)
2682 {
2683         struct p2p_device *dev;
2684
2685         if (p2p->state != P2P_IDLE)
2686                 return;
2687
2688         /*
2689          * Retry the prov disc req attempt only for the peer that the user had
2690          * requested.
2691          */
2692
2693         dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
2694                 if (os_memcmp(p2p->pending_pd_devaddr,
2695                               dev->info.p2p_device_addr, ETH_ALEN) != 0)
2696                         continue;
2697                 if (!dev->req_config_methods)
2698                         continue;
2699
2700                 p2p_dbg(p2p, "Send pending Provision Discovery Request to "
2701                         MACSTR " (config methods 0x%x)",
2702                         MAC2STR(dev->info.p2p_device_addr),
2703                         dev->req_config_methods);
2704                 p2p_send_prov_disc_req(p2p, dev,
2705                                        dev->flags & P2P_DEV_PD_FOR_JOIN,
2706                                        p2p->pd_force_freq);
2707                 return;
2708         }
2709 }
2710
2711
2712 static void p2p_prov_disc_cb(struct p2p_data *p2p, int success)
2713 {
2714         p2p_dbg(p2p, "Provision Discovery Request TX callback: success=%d",
2715                 success);
2716
2717         /*
2718          * Postpone resetting the pending action state till after we actually
2719          * time out. This allows us to take some action like notifying any
2720          * interested parties about no response to the request.
2721          *
2722          * When the timer (below) goes off we check in IDLE, SEARCH, or
2723          * LISTEN_ONLY state, which are the only allowed states to issue a PD
2724          * requests in, if this was still pending and then raise notification.
2725          */
2726
2727         if (!success) {
2728                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2729
2730                 if (p2p->user_initiated_pd &&
2731                     (p2p->state == P2P_SEARCH || p2p->state == P2P_LISTEN_ONLY))
2732                 {
2733                         /* Retry request from timeout to avoid busy loops */
2734                         p2p->pending_action_state = P2P_PENDING_PD;
2735                         p2p_set_timeout(p2p, 0, 50000);
2736                 } else if (p2p->state != P2P_IDLE)
2737                         p2p_continue_find(p2p);
2738                 else if (p2p->user_initiated_pd) {
2739                         p2p->pending_action_state = P2P_PENDING_PD;
2740                         p2p_set_timeout(p2p, 0, 300000);
2741                 }
2742                 return;
2743         }
2744
2745         /*
2746          * This postponing, of resetting pending_action_state, needs to be
2747          * done only for user initiated PD requests and not internal ones.
2748          */
2749         if (p2p->user_initiated_pd)
2750                 p2p->pending_action_state = P2P_PENDING_PD;
2751         else
2752                 p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2753
2754         /* Wait for response from the peer */
2755         if (p2p->state == P2P_SEARCH)
2756                 p2p_set_state(p2p, P2P_PD_DURING_FIND);
2757         p2p_set_timeout(p2p, 0, 200000);
2758 }
2759
2760
2761 int p2p_scan_res_handler(struct p2p_data *p2p, const u8 *bssid, int freq,
2762                          struct os_reltime *rx_time, int level, const u8 *ies,
2763                          size_t ies_len)
2764 {
2765         if (os_reltime_before(rx_time, &p2p->find_start)) {
2766                 /*
2767                  * The driver may have cached (e.g., in cfg80211 BSS table) the
2768                  * scan results for relatively long time. To avoid reporting
2769                  * stale information, update P2P peers only based on results
2770                  * that have based on frames received after the last p2p_find
2771                  * operation was started.
2772                  */
2773                 p2p_dbg(p2p, "Ignore old scan result for " MACSTR
2774                         " (rx_time=%u.%06u)",
2775                         MAC2STR(bssid), (unsigned int) rx_time->sec,
2776                         (unsigned int) rx_time->usec);
2777                 return 0;
2778         }
2779
2780         p2p_add_device(p2p, bssid, freq, rx_time, level, ies, ies_len, 1);
2781
2782         return 0;
2783 }
2784
2785
2786 void p2p_scan_res_handled(struct p2p_data *p2p)
2787 {
2788         if (!p2p->p2p_scan_running) {
2789                 p2p_dbg(p2p, "p2p_scan was not running, but scan results received");
2790         }
2791         p2p->p2p_scan_running = 0;
2792         eloop_cancel_timeout(p2p_scan_timeout, p2p, NULL);
2793
2794         if (p2p_run_after_scan(p2p))
2795                 return;
2796         if (p2p->state == P2P_SEARCH)
2797                 p2p_continue_find(p2p);
2798 }
2799
2800
2801 void p2p_scan_ie(struct p2p_data *p2p, struct wpabuf *ies, const u8 *dev_id)
2802 {
2803         u8 *len;
2804
2805 #ifdef CONFIG_WIFI_DISPLAY
2806         if (p2p->wfd_ie_probe_req)
2807                 wpabuf_put_buf(ies, p2p->wfd_ie_probe_req);
2808 #endif /* CONFIG_WIFI_DISPLAY */
2809
2810         len = p2p_buf_add_ie_hdr(ies);
2811         p2p_buf_add_capability(ies, p2p->dev_capab &
2812                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
2813         if (dev_id)
2814                 p2p_buf_add_device_id(ies, dev_id);
2815         if (p2p->cfg->reg_class && p2p->cfg->channel)
2816                 p2p_buf_add_listen_channel(ies, p2p->cfg->country,
2817                                            p2p->cfg->reg_class,
2818                                            p2p->cfg->channel);
2819         if (p2p->ext_listen_interval)
2820                 p2p_buf_add_ext_listen_timing(ies, p2p->ext_listen_period,
2821                                               p2p->ext_listen_interval);
2822         /* TODO: p2p_buf_add_operating_channel() if GO */
2823         p2p_buf_update_ie_hdr(ies, len);
2824 }
2825
2826
2827 size_t p2p_scan_ie_buf_len(struct p2p_data *p2p)
2828 {
2829         size_t len = 100;
2830
2831 #ifdef CONFIG_WIFI_DISPLAY
2832         if (p2p && p2p->wfd_ie_probe_req)
2833                 len += wpabuf_len(p2p->wfd_ie_probe_req);
2834 #endif /* CONFIG_WIFI_DISPLAY */
2835
2836         return len;
2837 }
2838
2839
2840 int p2p_ie_text(struct wpabuf *p2p_ie, char *buf, char *end)
2841 {
2842         return p2p_attr_text(p2p_ie, buf, end);
2843 }
2844
2845
2846 static void p2p_go_neg_req_cb(struct p2p_data *p2p, int success)
2847 {
2848         struct p2p_device *dev = p2p->go_neg_peer;
2849         int timeout;
2850
2851         p2p_dbg(p2p, "GO Negotiation Request TX callback: success=%d", success);
2852
2853         if (dev == NULL) {
2854                 p2p_dbg(p2p, "No pending GO Negotiation");
2855                 return;
2856         }
2857
2858         if (success) {
2859                 if (dev->flags & P2P_DEV_USER_REJECTED) {
2860                         p2p_set_state(p2p, P2P_IDLE);
2861                         return;
2862                 }
2863         } else if (dev->go_neg_req_sent) {
2864                 /* Cancel the increment from p2p_connect_send() on failure */
2865                 dev->go_neg_req_sent--;
2866         }
2867
2868         if (!success &&
2869             (dev->info.dev_capab & P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY) &&
2870             !is_zero_ether_addr(dev->member_in_go_dev)) {
2871                 p2p_dbg(p2p, "Peer " MACSTR " did not acknowledge request - try to use device discoverability through its GO",
2872                         MAC2STR(dev->info.p2p_device_addr));
2873                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2874                 p2p_send_dev_disc_req(p2p, dev);
2875                 return;
2876         }
2877
2878         /*
2879          * Use P2P find, if needed, to find the other device from its listen
2880          * channel.
2881          */
2882         p2p_set_state(p2p, P2P_CONNECT);
2883         timeout = success ? 500000 : 100000;
2884         if (!success && p2p->go_neg_peer &&
2885             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE)) {
2886                 unsigned int r;
2887                 /*
2888                  * Peer is expected to wait our response and we will skip the
2889                  * listen phase. Add some randomness to the wait time here to
2890                  * make it less likely to hit cases where we could end up in
2891                  * sync with peer not listening.
2892                  */
2893                 os_get_random((u8 *) &r, sizeof(r));
2894                 timeout += r % 100000;
2895         }
2896         p2p_set_timeout(p2p, 0, timeout);
2897 }
2898
2899
2900 static void p2p_go_neg_resp_cb(struct p2p_data *p2p, int success)
2901 {
2902         p2p_dbg(p2p, "GO Negotiation Response TX callback: success=%d",
2903                 success);
2904         if (!p2p->go_neg_peer && p2p->state == P2P_PROVISIONING) {
2905                 p2p_dbg(p2p, "Ignore TX callback event - GO Negotiation is not running anymore");
2906                 return;
2907         }
2908         p2p_set_state(p2p, P2P_CONNECT);
2909         p2p_set_timeout(p2p, 0, 500000);
2910 }
2911
2912
2913 static void p2p_go_neg_resp_failure_cb(struct p2p_data *p2p, int success,
2914                                        const u8 *addr)
2915 {
2916         p2p_dbg(p2p, "GO Negotiation Response (failure) TX callback: success=%d", success);
2917         if (p2p->go_neg_peer && p2p->go_neg_peer->status != P2P_SC_SUCCESS) {
2918                 p2p_go_neg_failed(p2p, p2p->go_neg_peer,
2919                                   p2p->go_neg_peer->status);
2920         } else if (success) {
2921                 struct p2p_device *dev;
2922                 dev = p2p_get_device(p2p, addr);
2923                 if (dev &&
2924                     dev->status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE)
2925                         dev->flags |= P2P_DEV_PEER_WAITING_RESPONSE;
2926         }
2927 }
2928
2929
2930 static void p2p_go_neg_conf_cb(struct p2p_data *p2p,
2931                                enum p2p_send_action_result result)
2932 {
2933         struct p2p_device *dev;
2934
2935         p2p_dbg(p2p, "GO Negotiation Confirm TX callback: result=%d", result);
2936         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
2937         if (result == P2P_SEND_ACTION_FAILED) {
2938                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
2939                 return;
2940         }
2941         if (result == P2P_SEND_ACTION_NO_ACK) {
2942                 /*
2943                  * It looks like the TX status for GO Negotiation Confirm is
2944                  * often showing failure even when the peer has actually
2945                  * received the frame. Since the peer may change channels
2946                  * immediately after having received the frame, we may not see
2947                  * an Ack for retries, so just dropping a single frame may
2948                  * trigger this. To allow the group formation to succeed if the
2949                  * peer did indeed receive the frame, continue regardless of
2950                  * the TX status.
2951                  */
2952                 p2p_dbg(p2p, "Assume GO Negotiation Confirm TX was actually received by the peer even though Ack was not reported");
2953         }
2954
2955         dev = p2p->go_neg_peer;
2956         if (dev == NULL)
2957                 return;
2958
2959         p2p_go_complete(p2p, dev);
2960 }
2961
2962
2963 void p2p_send_action_cb(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
2964                         const u8 *src, const u8 *bssid,
2965                         enum p2p_send_action_result result)
2966 {
2967         enum p2p_pending_action_state state;
2968         int success;
2969
2970         p2p_dbg(p2p, "Action frame TX callback (state=%d freq=%u dst=" MACSTR
2971                 " src=" MACSTR " bssid=" MACSTR " result=%d",
2972                 p2p->pending_action_state, freq, MAC2STR(dst), MAC2STR(src),
2973                 MAC2STR(bssid), result);
2974         success = result == P2P_SEND_ACTION_SUCCESS;
2975         state = p2p->pending_action_state;
2976         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
2977         switch (state) {
2978         case P2P_NO_PENDING_ACTION:
2979                 if (p2p->after_scan_tx_in_progress) {
2980                         p2p->after_scan_tx_in_progress = 0;
2981                         if (p2p->start_after_scan != P2P_AFTER_SCAN_NOTHING &&
2982                             p2p_run_after_scan(p2p))
2983                                 break;
2984                         if (p2p->state == P2P_SEARCH) {
2985                                 p2p_dbg(p2p, "Continue find after after_scan_tx completion");
2986                                 p2p_continue_find(p2p);
2987                         }
2988                 }
2989                 break;
2990         case P2P_PENDING_GO_NEG_REQUEST:
2991                 p2p_go_neg_req_cb(p2p, success);
2992                 break;
2993         case P2P_PENDING_GO_NEG_RESPONSE:
2994                 p2p_go_neg_resp_cb(p2p, success);
2995                 break;
2996         case P2P_PENDING_GO_NEG_RESPONSE_FAILURE:
2997                 p2p_go_neg_resp_failure_cb(p2p, success, dst);
2998                 break;
2999         case P2P_PENDING_GO_NEG_CONFIRM:
3000                 p2p_go_neg_conf_cb(p2p, result);
3001                 break;
3002         case P2P_PENDING_SD:
3003                 p2p_sd_cb(p2p, success);
3004                 break;
3005         case P2P_PENDING_PD:
3006                 p2p_prov_disc_cb(p2p, success);
3007                 break;
3008         case P2P_PENDING_INVITATION_REQUEST:
3009                 p2p_invitation_req_cb(p2p, success);
3010                 break;
3011         case P2P_PENDING_INVITATION_RESPONSE:
3012                 p2p_invitation_resp_cb(p2p, success);
3013                 break;
3014         case P2P_PENDING_DEV_DISC_REQUEST:
3015                 p2p_dev_disc_req_cb(p2p, success);
3016                 break;
3017         case P2P_PENDING_DEV_DISC_RESPONSE:
3018                 p2p_dev_disc_resp_cb(p2p, success);
3019                 break;
3020         case P2P_PENDING_GO_DISC_REQ:
3021                 p2p_go_disc_req_cb(p2p, success);
3022                 break;
3023         }
3024
3025         p2p->after_scan_tx_in_progress = 0;
3026 }
3027
3028
3029 void p2p_listen_cb(struct p2p_data *p2p, unsigned int freq,
3030                    unsigned int duration)
3031 {
3032         if (freq == p2p->pending_client_disc_freq) {
3033                 p2p_dbg(p2p, "Client discoverability remain-awake completed");
3034                 p2p->pending_client_disc_freq = 0;
3035                 return;
3036         }
3037
3038         if (freq != p2p->pending_listen_freq) {
3039                 p2p_dbg(p2p, "Unexpected listen callback for freq=%u duration=%u (pending_listen_freq=%u)",
3040                         freq, duration, p2p->pending_listen_freq);
3041                 return;
3042         }
3043
3044         p2p_dbg(p2p, "Starting Listen timeout(%u,%u) on freq=%u based on callback",
3045                 p2p->pending_listen_sec, p2p->pending_listen_usec,
3046                 p2p->pending_listen_freq);
3047         p2p->in_listen = 1;
3048         p2p->drv_in_listen = freq;
3049         if (p2p->pending_listen_sec || p2p->pending_listen_usec) {
3050                 /*
3051                  * Add 20 msec extra wait to avoid race condition with driver
3052                  * remain-on-channel end event, i.e., give driver more time to
3053                  * complete the operation before our timeout expires.
3054                  */
3055                 p2p_set_timeout(p2p, p2p->pending_listen_sec,
3056                                 p2p->pending_listen_usec + 20000);
3057         }
3058
3059         p2p->pending_listen_freq = 0;
3060 }
3061
3062
3063 int p2p_listen_end(struct p2p_data *p2p, unsigned int freq)
3064 {
3065         p2p_dbg(p2p, "Driver ended Listen state (freq=%u)", freq);
3066         p2p->drv_in_listen = 0;
3067         if (p2p->in_listen)
3068                 return 0; /* Internal timeout will trigger the next step */
3069
3070         if (p2p->state == P2P_CONNECT_LISTEN && p2p->go_neg_peer) {
3071                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3072                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3073                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3074                         return 0;
3075                 }
3076
3077                 p2p_set_state(p2p, P2P_CONNECT);
3078                 p2p_connect_send(p2p, p2p->go_neg_peer);
3079                 return 1;
3080         } else if (p2p->state == P2P_SEARCH) {
3081                 if (p2p->p2p_scan_running) {
3082                          /*
3083                           * Search is already in progress. This can happen if
3084                           * an Action frame RX is reported immediately after
3085                           * the end of a remain-on-channel operation and the
3086                           * response frame to that is sent using an offchannel
3087                           * operation while in p2p_find. Avoid an attempt to
3088                           * restart a scan here.
3089                           */
3090                         p2p_dbg(p2p, "p2p_scan already in progress - do not try to start a new one");
3091                         return 1;
3092                 }
3093                 if (p2p->pending_listen_freq) {
3094                         /*
3095                          * Better wait a bit if the driver is unable to start
3096                          * offchannel operation for some reason. p2p_search()
3097                          * will be started from internal timeout.
3098                          */
3099                         p2p_dbg(p2p, "Listen operation did not seem to start - delay search phase to avoid busy loop");
3100                         p2p_set_timeout(p2p, 0, 100000);
3101                         return 1;
3102                 }
3103                 if (p2p->search_delay) {
3104                         p2p_dbg(p2p, "Delay search operation by %u ms",
3105                                 p2p->search_delay);
3106                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3107                                         (p2p->search_delay % 1000) * 1000);
3108                         return 1;
3109                 }
3110                 p2p_search(p2p);
3111                 return 1;
3112         }
3113
3114         return 0;
3115 }
3116
3117
3118 static void p2p_timeout_connect(struct p2p_data *p2p)
3119 {
3120         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3121         if (p2p->go_neg_peer &&
3122             (p2p->go_neg_peer->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM)) {
3123                 p2p_dbg(p2p, "Wait for GO Negotiation Confirm timed out - assume GO Negotiation failed");
3124                 p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3125                 return;
3126         }
3127         if (p2p->go_neg_peer &&
3128             (p2p->go_neg_peer->flags & P2P_DEV_PEER_WAITING_RESPONSE) &&
3129             p2p->go_neg_peer->connect_reqs < 120) {
3130                 p2p_dbg(p2p, "Peer expected to wait our response - skip listen");
3131                 p2p_connect_send(p2p, p2p->go_neg_peer);
3132                 return;
3133         }
3134         if (p2p->go_neg_peer && p2p->go_neg_peer->oob_go_neg_freq > 0) {
3135                 p2p_dbg(p2p, "Skip connect-listen since GO Neg channel known (OOB)");
3136                 p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3137                 p2p_set_timeout(p2p, 0, 30000);
3138                 return;
3139         }
3140         p2p_set_state(p2p, P2P_CONNECT_LISTEN);
3141         p2p_listen_in_find(p2p, 0);
3142 }
3143
3144
3145 static void p2p_timeout_connect_listen(struct p2p_data *p2p)
3146 {
3147         if (p2p->go_neg_peer) {
3148                 if (p2p->drv_in_listen) {
3149                         p2p_dbg(p2p, "Driver is still in Listen state; wait for it to complete");
3150                         return;
3151                 }
3152
3153                 if (p2p->go_neg_peer->connect_reqs >= 120) {
3154                         p2p_dbg(p2p, "Timeout on sending GO Negotiation Request without getting response");
3155                         p2p_go_neg_failed(p2p, p2p->go_neg_peer, -1);
3156                         return;
3157                 }
3158
3159                 p2p_set_state(p2p, P2P_CONNECT);
3160                 p2p_connect_send(p2p, p2p->go_neg_peer);
3161         } else
3162                 p2p_set_state(p2p, P2P_IDLE);
3163 }
3164
3165
3166 static void p2p_timeout_wait_peer_connect(struct p2p_data *p2p)
3167 {
3168         p2p_set_state(p2p, P2P_WAIT_PEER_IDLE);
3169
3170         if (p2p->cfg->is_concurrent_session_active &&
3171             p2p->cfg->is_concurrent_session_active(p2p->cfg->cb_ctx))
3172                 p2p_set_timeout(p2p, 0, 500000);
3173         else
3174                 p2p_set_timeout(p2p, 0, 200000);
3175 }
3176
3177
3178 static void p2p_timeout_wait_peer_idle(struct p2p_data *p2p)
3179 {
3180         struct p2p_device *dev = p2p->go_neg_peer;
3181
3182         if (dev == NULL) {
3183                 p2p_dbg(p2p, "Unknown GO Neg peer - stop GO Neg wait");
3184                 return;
3185         }
3186
3187         dev->wait_count++;
3188         if (dev->wait_count >= 120) {
3189                 p2p_dbg(p2p, "Timeout on waiting peer to become ready for GO Negotiation");
3190                 p2p_go_neg_failed(p2p, dev, -1);
3191                 return;
3192         }
3193
3194         p2p_dbg(p2p, "Go to Listen state while waiting for the peer to become ready for GO Negotiation");
3195         p2p_set_state(p2p, P2P_WAIT_PEER_CONNECT);
3196         p2p_listen_in_find(p2p, 0);
3197 }
3198
3199
3200 static void p2p_timeout_sd_during_find(struct p2p_data *p2p)
3201 {
3202         p2p_dbg(p2p, "Service Discovery Query timeout");
3203         if (p2p->sd_peer) {
3204                 p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3205                 p2p->sd_peer->flags &= ~P2P_DEV_SD_SCHEDULE;
3206                 p2p->sd_peer = NULL;
3207         }
3208         p2p_continue_find(p2p);
3209 }
3210
3211
3212 static void p2p_timeout_prov_disc_during_find(struct p2p_data *p2p)
3213 {
3214         p2p_dbg(p2p, "Provision Discovery Request timeout");
3215         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3216         p2p_continue_find(p2p);
3217 }
3218
3219
3220 static void p2p_timeout_prov_disc_req(struct p2p_data *p2p)
3221 {
3222         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3223
3224         /*
3225          * For user initiated PD requests that we have not gotten any responses
3226          * for while in IDLE state, we retry them a couple of times before
3227          * giving up.
3228          */
3229         if (!p2p->user_initiated_pd)
3230                 return;
3231
3232         p2p_dbg(p2p, "User initiated Provision Discovery Request timeout");
3233
3234         if (p2p->pd_retries) {
3235                 p2p->pd_retries--;
3236                 p2p_retry_pd(p2p);
3237         } else {
3238                 struct p2p_device *dev;
3239                 int for_join = 0;
3240
3241                 dl_list_for_each(dev, &p2p->devices, struct p2p_device, list) {
3242                         if (os_memcmp(p2p->pending_pd_devaddr,
3243                                       dev->info.p2p_device_addr, ETH_ALEN) != 0)
3244                                 continue;
3245                         if (dev->req_config_methods &&
3246                             (dev->flags & P2P_DEV_PD_FOR_JOIN))
3247                                 for_join = 1;
3248                 }
3249
3250                 if (p2p->cfg->prov_disc_fail)
3251                         p2p->cfg->prov_disc_fail(p2p->cfg->cb_ctx,
3252                                                  p2p->pending_pd_devaddr,
3253                                                  for_join ?
3254                                                  P2P_PROV_DISC_TIMEOUT_JOIN :
3255                                                  P2P_PROV_DISC_TIMEOUT);
3256                 p2p_reset_pending_pd(p2p);
3257         }
3258 }
3259
3260
3261 static void p2p_timeout_invite(struct p2p_data *p2p)
3262 {
3263         p2p->cfg->send_action_done(p2p->cfg->cb_ctx);
3264         p2p_set_state(p2p, P2P_INVITE_LISTEN);
3265         if (p2p->inv_role == P2P_INVITE_ROLE_ACTIVE_GO) {
3266                 /*
3267                  * Better remain on operating channel instead of listen channel
3268                  * when running a group.
3269                  */
3270                 p2p_dbg(p2p, "Inviting in active GO role - wait on operating channel");
3271                 p2p_set_timeout(p2p, 0, 100000);
3272                 return;
3273         }
3274         p2p_listen_in_find(p2p, 0);
3275 }
3276
3277
3278 static void p2p_timeout_invite_listen(struct p2p_data *p2p)
3279 {
3280         if (p2p->invite_peer && p2p->invite_peer->invitation_reqs < 100) {
3281                 p2p_set_state(p2p, P2P_INVITE);
3282                 p2p_invite_send(p2p, p2p->invite_peer,
3283                                 p2p->invite_go_dev_addr, p2p->invite_dev_pw_id);
3284         } else {
3285                 if (p2p->invite_peer) {
3286                         p2p_dbg(p2p, "Invitation Request retry limit reached");
3287                         if (p2p->cfg->invitation_result)
3288                                 p2p->cfg->invitation_result(
3289                                         p2p->cfg->cb_ctx, -1, NULL, NULL,
3290                                         p2p->invite_peer->info.p2p_device_addr,
3291                                         0);
3292                 }
3293                 p2p_set_state(p2p, P2P_IDLE);
3294         }
3295 }
3296
3297
3298 static void p2p_state_timeout(void *eloop_ctx, void *timeout_ctx)
3299 {
3300         struct p2p_data *p2p = eloop_ctx;
3301
3302         p2p_dbg(p2p, "Timeout (state=%s)", p2p_state_txt(p2p->state));
3303
3304         p2p->in_listen = 0;
3305
3306         switch (p2p->state) {
3307         case P2P_IDLE:
3308                 /* Check if we timed out waiting for PD req */
3309                 if (p2p->pending_action_state == P2P_PENDING_PD)
3310                         p2p_timeout_prov_disc_req(p2p);
3311                 break;
3312         case P2P_SEARCH:
3313                 /* Check if we timed out waiting for PD req */
3314                 if (p2p->pending_action_state == P2P_PENDING_PD)
3315                         p2p_timeout_prov_disc_req(p2p);
3316                 if (p2p->search_delay && !p2p->in_search_delay) {
3317                         p2p_dbg(p2p, "Delay search operation by %u ms",
3318                                 p2p->search_delay);
3319                         p2p->in_search_delay = 1;
3320                         p2p_set_timeout(p2p, p2p->search_delay / 1000,
3321                                         (p2p->search_delay % 1000) * 1000);
3322                         break;
3323                 }
3324                 p2p->in_search_delay = 0;
3325                 p2p_search(p2p);
3326                 break;
3327         case P2P_CONNECT:
3328                 p2p_timeout_connect(p2p);
3329                 break;
3330         case P2P_CONNECT_LISTEN:
3331                 p2p_timeout_connect_listen(p2p);
3332                 break;
3333         case P2P_GO_NEG:
3334                 break;
3335         case P2P_LISTEN_ONLY:
3336                 /* Check if we timed out waiting for PD req */
3337                 if (p2p->pending_action_state == P2P_PENDING_PD)
3338                         p2p_timeout_prov_disc_req(p2p);
3339
3340                 if (p2p->ext_listen_only) {
3341                         p2p_dbg(p2p, "Extended Listen Timing - Listen State completed");
3342                         p2p->ext_listen_only = 0;
3343                         p2p_set_state(p2p, P2P_IDLE);
3344                 }
3345                 break;
3346         case P2P_WAIT_PEER_CONNECT:
3347                 p2p_timeout_wait_peer_connect(p2p);
3348                 break;
3349         case P2P_WAIT_PEER_IDLE:
3350                 p2p_timeout_wait_peer_idle(p2p);
3351                 break;
3352         case P2P_SD_DURING_FIND:
3353                 p2p_timeout_sd_during_find(p2p);
3354                 break;
3355         case P2P_PROVISIONING:
3356                 break;
3357         case P2P_PD_DURING_FIND:
3358                 p2p_timeout_prov_disc_during_find(p2p);
3359                 break;
3360         case P2P_INVITE:
3361                 p2p_timeout_invite(p2p);
3362                 break;
3363         case P2P_INVITE_LISTEN:
3364                 p2p_timeout_invite_listen(p2p);
3365                 break;
3366         }
3367 }
3368
3369
3370 int p2p_reject(struct p2p_data *p2p, const u8 *peer_addr)
3371 {
3372         struct p2p_device *dev;
3373
3374         dev = p2p_get_device(p2p, peer_addr);
3375         p2p_dbg(p2p, "Local request to reject connection attempts by peer "
3376                 MACSTR, MAC2STR(peer_addr));
3377         if (dev == NULL) {
3378                 p2p_dbg(p2p, "Peer " MACSTR " unknown", MAC2STR(peer_addr));
3379                 return -1;
3380         }
3381         dev->status = P2P_SC_FAIL_REJECTED_BY_USER;
3382         dev->flags |= P2P_DEV_USER_REJECTED;
3383         return 0;
3384 }
3385
3386
3387 const char * p2p_wps_method_text(enum p2p_wps_method method)
3388 {
3389         switch (method) {
3390         case WPS_NOT_READY:
3391                 return "not-ready";
3392         case WPS_PIN_DISPLAY:
3393                 return "Display";
3394         case WPS_PIN_KEYPAD:
3395                 return "Keypad";
3396         case WPS_PBC:
3397                 return "PBC";
3398         case WPS_NFC:
3399                 return "NFC";
3400         }
3401
3402         return "??";
3403 }
3404
3405
3406 static const char * p2p_go_state_text(enum p2p_go_state go_state)
3407 {
3408         switch (go_state) {
3409         case UNKNOWN_GO:
3410                 return "unknown";
3411         case LOCAL_GO:
3412                 return "local";
3413         case  REMOTE_GO:
3414                 return "remote";
3415         }
3416
3417         return "??";
3418 }
3419
3420
3421 const struct p2p_peer_info * p2p_get_peer_info(struct p2p_data *p2p,
3422                                                const u8 *addr, int next)
3423 {
3424         struct p2p_device *dev;
3425
3426         if (addr)
3427                 dev = p2p_get_device(p2p, addr);
3428         else
3429                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
3430
3431         if (dev && next) {
3432                 dev = dl_list_first(&dev->list, struct p2p_device, list);
3433                 if (&dev->list == &p2p->devices)
3434                         dev = NULL;
3435         }
3436
3437         if (dev == NULL)
3438                 return NULL;
3439
3440         return &dev->info;
3441 }
3442
3443
3444 int p2p_get_peer_info_txt(const struct p2p_peer_info *info,
3445                           char *buf, size_t buflen)
3446 {
3447         struct p2p_device *dev;
3448         int res;
3449         char *pos, *end;
3450         struct os_reltime now;
3451
3452         if (info == NULL)
3453                 return -1;
3454
3455         dev = (struct p2p_device *) (((u8 *) info) -
3456                                      offsetof(struct p2p_device, info));
3457
3458         pos = buf;
3459         end = buf + buflen;
3460
3461         os_get_reltime(&now);
3462         res = os_snprintf(pos, end - pos,
3463                           "age=%d\n"
3464                           "listen_freq=%d\n"
3465                           "wps_method=%s\n"
3466                           "interface_addr=" MACSTR "\n"
3467                           "member_in_go_dev=" MACSTR "\n"
3468                           "member_in_go_iface=" MACSTR "\n"
3469                           "go_neg_req_sent=%d\n"
3470                           "go_state=%s\n"
3471                           "dialog_token=%u\n"
3472                           "intended_addr=" MACSTR "\n"
3473                           "country=%c%c\n"
3474                           "oper_freq=%d\n"
3475                           "req_config_methods=0x%x\n"
3476                           "flags=%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n"
3477                           "status=%d\n"
3478                           "wait_count=%u\n"
3479                           "invitation_reqs=%u\n",
3480                           (int) (now.sec - dev->last_seen.sec),
3481                           dev->listen_freq,
3482                           p2p_wps_method_text(dev->wps_method),
3483                           MAC2STR(dev->interface_addr),
3484                           MAC2STR(dev->member_in_go_dev),
3485                           MAC2STR(dev->member_in_go_iface),
3486                           dev->go_neg_req_sent,
3487                           p2p_go_state_text(dev->go_state),
3488                           dev->dialog_token,
3489                           MAC2STR(dev->intended_addr),
3490                           dev->country[0] ? dev->country[0] : '_',
3491                           dev->country[1] ? dev->country[1] : '_',
3492                           dev->oper_freq,
3493                           dev->req_config_methods,
3494                           dev->flags & P2P_DEV_PROBE_REQ_ONLY ?
3495                           "[PROBE_REQ_ONLY]" : "",
3496                           dev->flags & P2P_DEV_REPORTED ? "[REPORTED]" : "",
3497                           dev->flags & P2P_DEV_NOT_YET_READY ?
3498                           "[NOT_YET_READY]" : "",
3499                           dev->flags & P2P_DEV_SD_INFO ? "[SD_INFO]" : "",
3500                           dev->flags & P2P_DEV_SD_SCHEDULE ? "[SD_SCHEDULE]" :
3501                           "",
3502                           dev->flags & P2P_DEV_PD_PEER_DISPLAY ?
3503                           "[PD_PEER_DISPLAY]" : "",
3504                           dev->flags & P2P_DEV_PD_PEER_KEYPAD ?
3505                           "[PD_PEER_KEYPAD]" : "",
3506                           dev->flags & P2P_DEV_USER_REJECTED ?
3507                           "[USER_REJECTED]" : "",
3508                           dev->flags & P2P_DEV_PEER_WAITING_RESPONSE ?
3509                           "[PEER_WAITING_RESPONSE]" : "",
3510                           dev->flags & P2P_DEV_PREFER_PERSISTENT_GROUP ?
3511                           "[PREFER_PERSISTENT_GROUP]" : "",
3512                           dev->flags & P2P_DEV_WAIT_GO_NEG_RESPONSE ?
3513                           "[WAIT_GO_NEG_RESPONSE]" : "",
3514                           dev->flags & P2P_DEV_WAIT_GO_NEG_CONFIRM ?
3515                           "[WAIT_GO_NEG_CONFIRM]" : "",
3516                           dev->flags & P2P_DEV_GROUP_CLIENT_ONLY ?
3517                           "[GROUP_CLIENT_ONLY]" : "",
3518                           dev->flags & P2P_DEV_FORCE_FREQ ?
3519                           "[FORCE_FREQ]" : "",
3520                           dev->flags & P2P_DEV_PD_FOR_JOIN ?
3521                           "[PD_FOR_JOIN]" : "",
3522                           dev->status,
3523                           dev->wait_count,
3524                           dev->invitation_reqs);
3525         if (res < 0 || res >= end - pos)
3526                 return pos - buf;
3527         pos += res;
3528
3529         if (dev->ext_listen_period) {
3530                 res = os_snprintf(pos, end - pos,
3531                                   "ext_listen_period=%u\n"
3532                                   "ext_listen_interval=%u\n",
3533                                   dev->ext_listen_period,
3534                                   dev->ext_listen_interval);
3535                 if (res < 0 || res >= end - pos)
3536                         return pos - buf;
3537                 pos += res;
3538         }
3539
3540         if (dev->oper_ssid_len) {
3541                 res = os_snprintf(pos, end - pos,
3542                                   "oper_ssid=%s\n",
3543                                   wpa_ssid_txt(dev->oper_ssid,
3544                                                dev->oper_ssid_len));
3545                 if (res < 0 || res >= end - pos)
3546                         return pos - buf;
3547                 pos += res;
3548         }
3549
3550 #ifdef CONFIG_WIFI_DISPLAY
3551         if (dev->info.wfd_subelems) {
3552                 res = os_snprintf(pos, end - pos, "wfd_subelems=");
3553                 if (res < 0 || res >= end - pos)
3554                         return pos - buf;
3555                 pos += res;
3556
3557                 pos += wpa_snprintf_hex(pos, end - pos,
3558                                         wpabuf_head(dev->info.wfd_subelems),
3559                                         wpabuf_len(dev->info.wfd_subelems));
3560
3561                 res = os_snprintf(pos, end - pos, "\n");
3562                 if (res < 0 || res >= end - pos)
3563                         return pos - buf;
3564                 pos += res;
3565         }
3566 #endif /* CONFIG_WIFI_DISPLAY */
3567
3568         return pos - buf;
3569 }
3570
3571
3572 int p2p_peer_known(struct p2p_data *p2p, const u8 *addr)
3573 {
3574         return p2p_get_device(p2p, addr) != NULL;
3575 }
3576
3577
3578 void p2p_set_client_discoverability(struct p2p_data *p2p, int enabled)
3579 {
3580         if (enabled) {
3581                 p2p_dbg(p2p, "Client discoverability enabled");
3582                 p2p->dev_capab |= P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3583         } else {
3584                 p2p_dbg(p2p, "Client discoverability disabled");
3585                 p2p->dev_capab &= ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY;
3586         }
3587 }
3588
3589
3590 static struct wpabuf * p2p_build_presence_req(u32 duration1, u32 interval1,
3591                                               u32 duration2, u32 interval2)
3592 {
3593         struct wpabuf *req;
3594         struct p2p_noa_desc desc1, desc2, *ptr1 = NULL, *ptr2 = NULL;
3595         u8 *len;
3596
3597         req = wpabuf_alloc(100);
3598         if (req == NULL)
3599                 return NULL;
3600
3601         if (duration1 || interval1) {
3602                 os_memset(&desc1, 0, sizeof(desc1));
3603                 desc1.count_type = 1;
3604                 desc1.duration = duration1;
3605                 desc1.interval = interval1;
3606                 ptr1 = &desc1;
3607
3608                 if (duration2 || interval2) {
3609                         os_memset(&desc2, 0, sizeof(desc2));
3610                         desc2.count_type = 2;
3611                         desc2.duration = duration2;
3612                         desc2.interval = interval2;
3613                         ptr2 = &desc2;
3614                 }
3615         }
3616
3617         p2p_buf_add_action_hdr(req, P2P_PRESENCE_REQ, 1);
3618         len = p2p_buf_add_ie_hdr(req);
3619         p2p_buf_add_noa(req, 0, 0, 0, ptr1, ptr2);
3620         p2p_buf_update_ie_hdr(req, len);
3621
3622         return req;
3623 }
3624
3625
3626 int p2p_presence_req(struct p2p_data *p2p, const u8 *go_interface_addr,
3627                      const u8 *own_interface_addr, unsigned int freq,
3628                      u32 duration1, u32 interval1, u32 duration2,
3629                      u32 interval2)
3630 {
3631         struct wpabuf *req;
3632
3633         p2p_dbg(p2p, "Send Presence Request to GO " MACSTR
3634                 " (own interface " MACSTR ") freq=%u dur1=%u int1=%u "
3635                 "dur2=%u int2=%u",
3636                 MAC2STR(go_interface_addr), MAC2STR(own_interface_addr),
3637                 freq, duration1, interval1, duration2, interval2);
3638
3639         req = p2p_build_presence_req(duration1, interval1, duration2,
3640                                      interval2);
3641         if (req == NULL)
3642                 return -1;
3643
3644         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3645         if (p2p_send_action(p2p, freq, go_interface_addr, own_interface_addr,
3646                             go_interface_addr,
3647                             wpabuf_head(req), wpabuf_len(req), 200) < 0) {
3648                 p2p_dbg(p2p, "Failed to send Action frame");
3649         }
3650         wpabuf_free(req);
3651
3652         return 0;
3653 }
3654
3655
3656 static struct wpabuf * p2p_build_presence_resp(u8 status, const u8 *noa,
3657                                                size_t noa_len, u8 dialog_token)
3658 {
3659         struct wpabuf *resp;
3660         u8 *len;
3661
3662         resp = wpabuf_alloc(100 + noa_len);
3663         if (resp == NULL)
3664                 return NULL;
3665
3666         p2p_buf_add_action_hdr(resp, P2P_PRESENCE_RESP, dialog_token);
3667         len = p2p_buf_add_ie_hdr(resp);
3668         p2p_buf_add_status(resp, status);
3669         if (noa) {
3670                 wpabuf_put_u8(resp, P2P_ATTR_NOTICE_OF_ABSENCE);
3671                 wpabuf_put_le16(resp, noa_len);
3672                 wpabuf_put_data(resp, noa, noa_len);
3673         } else
3674                 p2p_buf_add_noa(resp, 0, 0, 0, NULL, NULL);
3675         p2p_buf_update_ie_hdr(resp, len);
3676
3677         return resp;
3678 }
3679
3680
3681 static void p2p_process_presence_req(struct p2p_data *p2p, const u8 *da,
3682                                      const u8 *sa, const u8 *data, size_t len,
3683                                      int rx_freq)
3684 {
3685         struct p2p_message msg;
3686         u8 status;
3687         struct wpabuf *resp;
3688         size_t g;
3689         struct p2p_group *group = NULL;
3690         int parsed = 0;
3691         u8 noa[50];
3692         int noa_len;
3693
3694         p2p_dbg(p2p, "Received P2P Action - P2P Presence Request");
3695
3696         for (g = 0; g < p2p->num_groups; g++) {
3697                 if (os_memcmp(da, p2p_group_get_interface_addr(p2p->groups[g]),
3698                               ETH_ALEN) == 0) {
3699                         group = p2p->groups[g];
3700                         break;
3701                 }
3702         }
3703         if (group == NULL) {
3704                 p2p_dbg(p2p, "Ignore P2P Presence Request for unknown group "
3705                         MACSTR, MAC2STR(da));
3706                 return;
3707         }
3708
3709         if (p2p_parse(data, len, &msg) < 0) {
3710                 p2p_dbg(p2p, "Failed to parse P2P Presence Request");
3711                 status = P2P_SC_FAIL_INVALID_PARAMS;
3712                 goto fail;
3713         }
3714         parsed = 1;
3715
3716         if (msg.noa == NULL) {
3717                 p2p_dbg(p2p, "No NoA attribute in P2P Presence Request");
3718                 status = P2P_SC_FAIL_INVALID_PARAMS;
3719                 goto fail;
3720         }
3721
3722         status = p2p_group_presence_req(group, sa, msg.noa, msg.noa_len);
3723
3724 fail:
3725         if (p2p->cfg->get_noa)
3726                 noa_len = p2p->cfg->get_noa(p2p->cfg->cb_ctx, da, noa,
3727                                             sizeof(noa));
3728         else
3729                 noa_len = -1;
3730         resp = p2p_build_presence_resp(status, noa_len > 0 ? noa : NULL,
3731                                        noa_len > 0 ? noa_len : 0,
3732                                        msg.dialog_token);
3733         if (parsed)
3734                 p2p_parse_free(&msg);
3735         if (resp == NULL)
3736                 return;
3737
3738         p2p->pending_action_state = P2P_NO_PENDING_ACTION;
3739         if (p2p_send_action(p2p, rx_freq, sa, da, da,
3740                             wpabuf_head(resp), wpabuf_len(resp), 200) < 0) {
3741                 p2p_dbg(p2p, "Failed to send Action frame");
3742         }
3743         wpabuf_free(resp);
3744 }
3745
3746
3747 static void p2p_process_presence_resp(struct p2p_data *p2p, const u8 *da,
3748                                       const u8 *sa, const u8 *data, size_t len)
3749 {
3750         struct p2p_message msg;
3751
3752         p2p_dbg(p2p, "Received P2P Action - P2P Presence Response");
3753
3754         if (p2p_parse(data, len, &msg) < 0) {
3755                 p2p_dbg(p2p, "Failed to parse P2P Presence Response");
3756                 return;
3757         }
3758
3759         if (msg.status == NULL || msg.noa == NULL) {
3760                 p2p_dbg(p2p, "No Status or NoA attribute in P2P Presence Response");
3761                 p2p_parse_free(&msg);
3762                 return;
3763         }
3764
3765         if (p2p->cfg->presence_resp) {
3766                 p2p->cfg->presence_resp(p2p->cfg->cb_ctx, sa, *msg.status,
3767                                         msg.noa, msg.noa_len);
3768         }
3769
3770         if (*msg.status) {
3771                 p2p_dbg(p2p, "P2P Presence Request was rejected: status %u",
3772                         *msg.status);
3773                 p2p_parse_free(&msg);
3774                 return;
3775         }
3776
3777         p2p_dbg(p2p, "P2P Presence Request was accepted");
3778         wpa_hexdump(MSG_DEBUG, "P2P: P2P Presence Response - NoA",
3779                     msg.noa, msg.noa_len);
3780         /* TODO: process NoA */
3781         p2p_parse_free(&msg);
3782 }
3783
3784
3785 static void p2p_ext_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3786 {
3787         struct p2p_data *p2p = eloop_ctx;
3788
3789         if (p2p->ext_listen_interval) {
3790                 /* Schedule next extended listen timeout */
3791                 eloop_register_timeout(p2p->ext_listen_interval_sec,
3792                                        p2p->ext_listen_interval_usec,
3793                                        p2p_ext_listen_timeout, p2p, NULL);
3794         }
3795
3796         if (p2p->state == P2P_LISTEN_ONLY && p2p->ext_listen_only) {
3797                 /*
3798                  * This should not really happen, but it looks like the Listen
3799                  * command may fail is something else (e.g., a scan) was
3800                  * running at an inconvenient time. As a workaround, allow new
3801                  * Extended Listen operation to be started.
3802                  */
3803                 p2p_dbg(p2p, "Previous Extended Listen operation had not been completed - try again");
3804                 p2p->ext_listen_only = 0;
3805                 p2p_set_state(p2p, P2P_IDLE);
3806         }
3807
3808         if (p2p->state != P2P_IDLE) {
3809                 p2p_dbg(p2p, "Skip Extended Listen timeout in active state (%s)", p2p_state_txt(p2p->state));
3810                 return;
3811         }
3812
3813         p2p_dbg(p2p, "Extended Listen timeout");
3814         p2p->ext_listen_only = 1;
3815         if (p2p_listen(p2p, p2p->ext_listen_period) < 0) {
3816                 p2p_dbg(p2p, "Failed to start Listen state for Extended Listen Timing");
3817                 p2p->ext_listen_only = 0;
3818         }
3819 }
3820
3821
3822 int p2p_ext_listen(struct p2p_data *p2p, unsigned int period,
3823                    unsigned int interval)
3824 {
3825         if (period > 65535 || interval > 65535 || period > interval ||
3826             (period == 0 && interval > 0) || (period > 0 && interval == 0)) {
3827                 p2p_dbg(p2p, "Invalid Extended Listen Timing request: period=%u interval=%u",
3828                         period, interval);
3829                 return -1;
3830         }
3831
3832         eloop_cancel_timeout(p2p_ext_listen_timeout, p2p, NULL);
3833
3834         if (interval == 0) {
3835                 p2p_dbg(p2p, "Disabling Extended Listen Timing");
3836                 p2p->ext_listen_period = 0;
3837                 p2p->ext_listen_interval = 0;
3838                 return 0;
3839         }
3840
3841         p2p_dbg(p2p, "Enabling Extended Listen Timing: period %u msec, interval %u msec",
3842                 period, interval);
3843         p2p->ext_listen_period = period;
3844         p2p->ext_listen_interval = interval;
3845         p2p->ext_listen_interval_sec = interval / 1000;
3846         p2p->ext_listen_interval_usec = (interval % 1000) * 1000;
3847
3848         eloop_register_timeout(p2p->ext_listen_interval_sec,
3849                                p2p->ext_listen_interval_usec,
3850                                p2p_ext_listen_timeout, p2p, NULL);
3851
3852         return 0;
3853 }
3854
3855
3856 void p2p_deauth_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3857                       const u8 *ie, size_t ie_len)
3858 {
3859         struct p2p_message msg;
3860
3861         if (bssid == NULL || ie == NULL)
3862                 return;
3863
3864         os_memset(&msg, 0, sizeof(msg));
3865         if (p2p_parse_ies(ie, ie_len, &msg))
3866                 return;
3867         if (msg.minor_reason_code == NULL) {
3868                 p2p_parse_free(&msg);
3869                 return;
3870         }
3871
3872         p2p_dbg(p2p, "Deauthentication notification BSSID " MACSTR
3873                 " reason_code=%u minor_reason_code=%u",
3874                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3875
3876         p2p_parse_free(&msg);
3877 }
3878
3879
3880 void p2p_disassoc_notif(struct p2p_data *p2p, const u8 *bssid, u16 reason_code,
3881                         const u8 *ie, size_t ie_len)
3882 {
3883         struct p2p_message msg;
3884
3885         if (bssid == NULL || ie == NULL)
3886                 return;
3887
3888         os_memset(&msg, 0, sizeof(msg));
3889         if (p2p_parse_ies(ie, ie_len, &msg))
3890                 return;
3891         if (msg.minor_reason_code == NULL) {
3892                 p2p_parse_free(&msg);
3893                 return;
3894         }
3895
3896         p2p_dbg(p2p, "Disassociation notification BSSID " MACSTR
3897                 " reason_code=%u minor_reason_code=%u",
3898                 MAC2STR(bssid), reason_code, *msg.minor_reason_code);
3899
3900         p2p_parse_free(&msg);
3901 }
3902
3903
3904 void p2p_set_managed_oper(struct p2p_data *p2p, int enabled)
3905 {
3906         if (enabled) {
3907                 p2p_dbg(p2p, "Managed P2P Device operations enabled");
3908                 p2p->dev_capab |= P2P_DEV_CAPAB_INFRA_MANAGED;
3909         } else {
3910                 p2p_dbg(p2p, "Managed P2P Device operations disabled");
3911                 p2p->dev_capab &= ~P2P_DEV_CAPAB_INFRA_MANAGED;
3912         }
3913 }
3914
3915
3916 int p2p_set_listen_channel(struct p2p_data *p2p, u8 reg_class, u8 channel)
3917 {
3918         if (p2p_channel_to_freq(reg_class, channel) < 0)
3919                 return -1;
3920
3921         p2p_dbg(p2p, "Set Listen channel: reg_class %u channel %u",
3922                 reg_class, channel);
3923         p2p->cfg->reg_class = reg_class;
3924         p2p->cfg->channel = channel;
3925
3926         return 0;
3927 }
3928
3929
3930 int p2p_set_ssid_postfix(struct p2p_data *p2p, const u8 *postfix, size_t len)
3931 {
3932         p2p_dbg(p2p, "New SSID postfix: %s", wpa_ssid_txt(postfix, len));
3933         if (postfix == NULL) {
3934                 p2p->cfg->ssid_postfix_len = 0;
3935                 return 0;
3936         }
3937         if (len > sizeof(p2p->cfg->ssid_postfix))
3938                 return -1;
3939         os_memcpy(p2p->cfg->ssid_postfix, postfix, len);
3940         p2p->cfg->ssid_postfix_len = len;
3941         return 0;
3942 }
3943
3944
3945 int p2p_set_oper_channel(struct p2p_data *p2p, u8 op_reg_class, u8 op_channel,
3946                          int cfg_op_channel)
3947 {
3948         if (p2p_channel_to_freq(op_reg_class, op_channel) < 0)
3949                 return -1;
3950
3951         p2p_dbg(p2p, "Set Operating channel: reg_class %u channel %u",
3952                 op_reg_class, op_channel);
3953         p2p->cfg->op_reg_class = op_reg_class;
3954         p2p->cfg->op_channel = op_channel;
3955         p2p->cfg->cfg_op_channel = cfg_op_channel;
3956         return 0;
3957 }
3958
3959
3960 int p2p_set_pref_chan(struct p2p_data *p2p, unsigned int num_pref_chan,
3961                       const struct p2p_channel *pref_chan)
3962 {
3963         struct p2p_channel *n;
3964
3965         if (pref_chan) {
3966                 n = os_malloc(num_pref_chan * sizeof(struct p2p_channel));
3967                 if (n == NULL)
3968                         return -1;
3969                 os_memcpy(n, pref_chan,
3970                           num_pref_chan * sizeof(struct p2p_channel));
3971         } else
3972                 n = NULL;
3973
3974         os_free(p2p->cfg->pref_chan);
3975         p2p->cfg->pref_chan = n;
3976         p2p->cfg->num_pref_chan = num_pref_chan;
3977
3978         return 0;
3979 }
3980
3981
3982 int p2p_set_no_go_freq(struct p2p_data *p2p,
3983                        const struct wpa_freq_range_list *list)
3984 {
3985         struct wpa_freq_range *tmp;
3986
3987         if (list == NULL || list->num == 0) {
3988                 os_free(p2p->no_go_freq.range);
3989                 p2p->no_go_freq.range = NULL;
3990                 p2p->no_go_freq.num = 0;
3991                 return 0;
3992         }
3993
3994         tmp = os_calloc(list->num, sizeof(struct wpa_freq_range));
3995         if (tmp == NULL)
3996                 return -1;
3997         os_memcpy(tmp, list->range, list->num * sizeof(struct wpa_freq_range));
3998         os_free(p2p->no_go_freq.range);
3999         p2p->no_go_freq.range = tmp;
4000         p2p->no_go_freq.num = list->num;
4001         p2p_dbg(p2p, "Updated no GO chan list");
4002
4003         return 0;
4004 }
4005
4006
4007 int p2p_get_interface_addr(struct p2p_data *p2p, const u8 *dev_addr,
4008                            u8 *iface_addr)
4009 {
4010         struct p2p_device *dev = p2p_get_device(p2p, dev_addr);
4011         if (dev == NULL || is_zero_ether_addr(dev->interface_addr))
4012                 return -1;
4013         os_memcpy(iface_addr, dev->interface_addr, ETH_ALEN);
4014         return 0;
4015 }
4016
4017
4018 int p2p_get_dev_addr(struct p2p_data *p2p, const u8 *iface_addr,
4019                            u8 *dev_addr)
4020 {
4021         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4022         if (dev == NULL)
4023                 return -1;
4024         os_memcpy(dev_addr, dev->info.p2p_device_addr, ETH_ALEN);
4025         return 0;
4026 }
4027
4028
4029 void p2p_set_peer_filter(struct p2p_data *p2p, const u8 *addr)
4030 {
4031         os_memcpy(p2p->peer_filter, addr, ETH_ALEN);
4032         if (is_zero_ether_addr(p2p->peer_filter))
4033                 p2p_dbg(p2p, "Disable peer filter");
4034         else
4035                 p2p_dbg(p2p, "Enable peer filter for " MACSTR,
4036                         MAC2STR(p2p->peer_filter));
4037 }
4038
4039
4040 void p2p_set_cross_connect(struct p2p_data *p2p, int enabled)
4041 {
4042         p2p_dbg(p2p, "Cross connection %s", enabled ? "enabled" : "disabled");
4043         if (p2p->cross_connect == enabled)
4044                 return;
4045         p2p->cross_connect = enabled;
4046         /* TODO: may need to tear down any action group where we are GO(?) */
4047 }
4048
4049
4050 int p2p_get_oper_freq(struct p2p_data *p2p, const u8 *iface_addr)
4051 {
4052         struct p2p_device *dev = p2p_get_device_interface(p2p, iface_addr);
4053         if (dev == NULL)
4054                 return -1;
4055         if (dev->oper_freq <= 0)
4056                 return -1;
4057         return dev->oper_freq;
4058 }
4059
4060
4061 void p2p_set_intra_bss_dist(struct p2p_data *p2p, int enabled)
4062 {
4063         p2p_dbg(p2p, "Intra BSS distribution %s",
4064                 enabled ? "enabled" : "disabled");
4065         p2p->cfg->p2p_intra_bss = enabled;
4066 }
4067
4068
4069 void p2p_update_channel_list(struct p2p_data *p2p,
4070                              const struct p2p_channels *chan,
4071                              const struct p2p_channels *cli_chan)
4072 {
4073         p2p_dbg(p2p, "Update channel list");
4074         os_memcpy(&p2p->cfg->channels, chan, sizeof(struct p2p_channels));
4075         p2p_channels_dump(p2p, "channels", &p2p->cfg->channels);
4076         os_memcpy(&p2p->cfg->cli_channels, cli_chan,
4077                   sizeof(struct p2p_channels));
4078         p2p_channels_dump(p2p, "cli_channels", &p2p->cfg->cli_channels);
4079 }
4080
4081
4082 int p2p_send_action(struct p2p_data *p2p, unsigned int freq, const u8 *dst,
4083                     const u8 *src, const u8 *bssid, const u8 *buf,
4084                     size_t len, unsigned int wait_time)
4085 {
4086         if (p2p->p2p_scan_running) {
4087                 p2p_dbg(p2p, "Delay Action frame TX until p2p_scan completes");
4088                 if (p2p->after_scan_tx) {
4089                         p2p_dbg(p2p, "Dropped previous pending Action frame TX");
4090                         os_free(p2p->after_scan_tx);
4091                 }
4092                 p2p->after_scan_tx = os_malloc(sizeof(*p2p->after_scan_tx) +
4093                                                len);
4094                 if (p2p->after_scan_tx == NULL)
4095                         return -1;
4096                 p2p->after_scan_tx->freq = freq;
4097                 os_memcpy(p2p->after_scan_tx->dst, dst, ETH_ALEN);
4098                 os_memcpy(p2p->after_scan_tx->src, src, ETH_ALEN);
4099                 os_memcpy(p2p->after_scan_tx->bssid, bssid, ETH_ALEN);
4100                 p2p->after_scan_tx->len = len;
4101                 p2p->after_scan_tx->wait_time = wait_time;
4102                 os_memcpy(p2p->after_scan_tx + 1, buf, len);
4103                 return 0;
4104         }
4105
4106         return p2p->cfg->send_action(p2p->cfg->cb_ctx, freq, dst, src, bssid,
4107                                      buf, len, wait_time);
4108 }
4109
4110
4111 void p2p_set_best_channels(struct p2p_data *p2p, int freq_24, int freq_5,
4112                            int freq_overall)
4113 {
4114         p2p_dbg(p2p, "Best channel: 2.4 GHz: %d,  5 GHz: %d,  overall: %d",
4115                 freq_24, freq_5, freq_overall);
4116         p2p->best_freq_24 = freq_24;
4117         p2p->best_freq_5 = freq_5;
4118         p2p->best_freq_overall = freq_overall;
4119 }
4120
4121
4122 void p2p_set_own_freq_preference(struct p2p_data *p2p, int freq)
4123 {
4124         p2p_dbg(p2p, "Own frequency preference: %d MHz", freq);
4125         p2p->own_freq_preference = freq;
4126 }
4127
4128
4129 const u8 * p2p_get_go_neg_peer(struct p2p_data *p2p)
4130 {
4131         if (p2p == NULL || p2p->go_neg_peer == NULL)
4132                 return NULL;
4133         return p2p->go_neg_peer->info.p2p_device_addr;
4134 }
4135
4136
4137 const struct p2p_peer_info *
4138 p2p_get_peer_found(struct p2p_data *p2p, const u8 *addr, int next)
4139 {
4140         struct p2p_device *dev;
4141
4142         if (addr) {
4143                 dev = p2p_get_device(p2p, addr);
4144                 if (!dev)
4145                         return NULL;
4146
4147                 if (!next) {
4148                         if (dev->flags & P2P_DEV_PROBE_REQ_ONLY)
4149                                 return NULL;
4150
4151                         return &dev->info;
4152                 } else {
4153                         do {
4154                                 dev = dl_list_first(&dev->list,
4155                                                     struct p2p_device,
4156                                                     list);
4157                                 if (&dev->list == &p2p->devices)
4158                                         return NULL;
4159                         } while (dev->flags & P2P_DEV_PROBE_REQ_ONLY);
4160                 }
4161         } else {
4162                 dev = dl_list_first(&p2p->devices, struct p2p_device, list);
4163                 if (!dev)
4164                         return NULL;
4165                 while (dev->flags & P2P_DEV_PROBE_REQ_ONLY) {
4166                         dev = dl_list_first(&dev->list,
4167                                             struct p2p_device,
4168                                             list);
4169                         if (&dev->list == &p2p->devices)
4170                                 return NULL;
4171                 }
4172         }
4173
4174         return &dev->info;
4175 }
4176
4177
4178 int p2p_in_progress(struct p2p_data *p2p)
4179 {
4180         if (p2p == NULL)
4181                 return 0;
4182         if (p2p->state == P2P_SEARCH)
4183                 return 2;
4184         return p2p->state != P2P_IDLE && p2p->state != P2P_PROVISIONING;
4185 }
4186
4187
4188 void p2p_set_config_timeout(struct p2p_data *p2p, u8 go_timeout,
4189                             u8 client_timeout)
4190 {
4191         if (p2p) {
4192                 p2p->go_timeout = go_timeout;
4193                 p2p->client_timeout = client_timeout;
4194         }
4195 }
4196
4197
4198 #ifdef CONFIG_WIFI_DISPLAY
4199
4200 static void p2p_update_wfd_ie_groups(struct p2p_data *p2p)
4201 {
4202         size_t g;
4203         struct p2p_group *group;
4204
4205         for (g = 0; g < p2p->num_groups; g++) {
4206                 group = p2p->groups[g];
4207                 p2p_group_force_beacon_update_ies(group);
4208         }
4209 }
4210
4211
4212 int p2p_set_wfd_ie_beacon(struct p2p_data *p2p, struct wpabuf *ie)
4213 {
4214         wpabuf_free(p2p->wfd_ie_beacon);
4215         p2p->wfd_ie_beacon = ie;
4216         p2p_update_wfd_ie_groups(p2p);
4217         return 0;
4218 }
4219
4220
4221 int p2p_set_wfd_ie_probe_req(struct p2p_data *p2p, struct wpabuf *ie)
4222 {
4223         wpabuf_free(p2p->wfd_ie_probe_req);
4224         p2p->wfd_ie_probe_req = ie;
4225         return 0;
4226 }
4227
4228
4229 int p2p_set_wfd_ie_probe_resp(struct p2p_data *p2p, struct wpabuf *ie)
4230 {
4231         wpabuf_free(p2p->wfd_ie_probe_resp);
4232         p2p->wfd_ie_probe_resp = ie;
4233         p2p_update_wfd_ie_groups(p2p);
4234         return 0;
4235 }
4236
4237
4238 int p2p_set_wfd_ie_assoc_req(struct p2p_data *p2p, struct wpabuf *ie)
4239 {
4240         wpabuf_free(p2p->wfd_ie_assoc_req);
4241         p2p->wfd_ie_assoc_req = ie;
4242         return 0;
4243 }
4244
4245
4246 int p2p_set_wfd_ie_invitation(struct p2p_data *p2p, struct wpabuf *ie)
4247 {
4248         wpabuf_free(p2p->wfd_ie_invitation);
4249         p2p->wfd_ie_invitation = ie;
4250         return 0;
4251 }
4252
4253
4254 int p2p_set_wfd_ie_prov_disc_req(struct p2p_data *p2p, struct wpabuf *ie)
4255 {
4256         wpabuf_free(p2p->wfd_ie_prov_disc_req);
4257         p2p->wfd_ie_prov_disc_req = ie;
4258         return 0;
4259 }
4260
4261
4262 int p2p_set_wfd_ie_prov_disc_resp(struct p2p_data *p2p, struct wpabuf *ie)
4263 {
4264         wpabuf_free(p2p->wfd_ie_prov_disc_resp);
4265         p2p->wfd_ie_prov_disc_resp = ie;
4266         return 0;
4267 }
4268
4269
4270 int p2p_set_wfd_ie_go_neg(struct p2p_data *p2p, struct wpabuf *ie)
4271 {
4272         wpabuf_free(p2p->wfd_ie_go_neg);
4273         p2p->wfd_ie_go_neg = ie;
4274         return 0;
4275 }
4276
4277
4278 int p2p_set_wfd_dev_info(struct p2p_data *p2p, const struct wpabuf *elem)
4279 {
4280         wpabuf_free(p2p->wfd_dev_info);
4281         if (elem) {
4282                 p2p->wfd_dev_info = wpabuf_dup(elem);
4283                 if (p2p->wfd_dev_info == NULL)
4284                         return -1;
4285         } else
4286                 p2p->wfd_dev_info = NULL;
4287
4288         return 0;
4289 }
4290
4291
4292 int p2p_set_wfd_assoc_bssid(struct p2p_data *p2p, const struct wpabuf *elem)
4293 {
4294         wpabuf_free(p2p->wfd_assoc_bssid);
4295         if (elem) {
4296                 p2p->wfd_assoc_bssid = wpabuf_dup(elem);
4297                 if (p2p->wfd_assoc_bssid == NULL)
4298                         return -1;
4299         } else
4300                 p2p->wfd_assoc_bssid = NULL;
4301
4302         return 0;
4303 }
4304
4305
4306 int p2p_set_wfd_coupled_sink_info(struct p2p_data *p2p,
4307                                   const struct wpabuf *elem)
4308 {
4309         wpabuf_free(p2p->wfd_coupled_sink_info);
4310         if (elem) {
4311                 p2p->wfd_coupled_sink_info = wpabuf_dup(elem);
4312                 if (p2p->wfd_coupled_sink_info == NULL)
4313                         return -1;
4314         } else
4315                 p2p->wfd_coupled_sink_info = NULL;
4316
4317         return 0;
4318 }
4319
4320 #endif /* CONFIG_WIFI_DISPLAY */
4321
4322
4323 int p2p_set_disc_int(struct p2p_data *p2p, int min_disc_int, int max_disc_int,
4324                      int max_disc_tu)
4325 {
4326         if (min_disc_int > max_disc_int || min_disc_int < 0 || max_disc_int < 0)
4327                 return -1;
4328
4329         p2p->min_disc_int = min_disc_int;
4330         p2p->max_disc_int = max_disc_int;
4331         p2p->max_disc_tu = max_disc_tu;
4332         p2p_dbg(p2p, "Set discoverable interval: min=%d max=%d max_tu=%d",
4333                 min_disc_int, max_disc_int, max_disc_tu);
4334
4335         return 0;
4336 }
4337
4338
4339 void p2p_dbg(struct p2p_data *p2p, const char *fmt, ...)
4340 {
4341         va_list ap;
4342         char buf[500];
4343
4344         if (!p2p->cfg->debug_print)
4345                 return;
4346
4347         va_start(ap, fmt);
4348         vsnprintf(buf, sizeof(buf), fmt, ap);
4349         buf[sizeof(buf) - 1] = '\0';
4350         va_end(ap);
4351         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_DEBUG, buf);
4352 }
4353
4354
4355 void p2p_info(struct p2p_data *p2p, const char *fmt, ...)
4356 {
4357         va_list ap;
4358         char buf[500];
4359
4360         if (!p2p->cfg->debug_print)
4361                 return;
4362
4363         va_start(ap, fmt);
4364         vsnprintf(buf, sizeof(buf), fmt, ap);
4365         buf[sizeof(buf) - 1] = '\0';
4366         va_end(ap);
4367         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_INFO, buf);
4368 }
4369
4370
4371 void p2p_err(struct p2p_data *p2p, const char *fmt, ...)
4372 {
4373         va_list ap;
4374         char buf[500];
4375
4376         if (!p2p->cfg->debug_print)
4377                 return;
4378
4379         va_start(ap, fmt);
4380         vsnprintf(buf, sizeof(buf), fmt, ap);
4381         buf[sizeof(buf) - 1] = '\0';
4382         va_end(ap);
4383         p2p->cfg->debug_print(p2p->cfg->cb_ctx, MSG_ERROR, buf);
4384 }
4385
4386
4387 #ifdef CONFIG_WPS_NFC
4388
4389 static struct wpabuf * p2p_build_nfc_handover(struct p2p_data *p2p,
4390                                               int client_freq,
4391                                               const u8 *go_dev_addr,
4392                                               const u8 *ssid, size_t ssid_len)
4393 {
4394         struct wpabuf *buf;
4395         u8 op_class, channel;
4396         enum p2p_role_indication role = P2P_DEVICE_NOT_IN_GROUP;
4397
4398         buf = wpabuf_alloc(1000);
4399         if (buf == NULL)
4400                 return NULL;
4401
4402         op_class = p2p->cfg->reg_class;
4403         channel = p2p->cfg->channel;
4404
4405         p2p_buf_add_capability(buf, p2p->dev_capab &
4406                                ~P2P_DEV_CAPAB_CLIENT_DISCOVERABILITY, 0);
4407         p2p_buf_add_device_info(buf, p2p, NULL);
4408
4409         if (p2p->num_groups > 0) {
4410                 role = P2P_GO_IN_A_GROUP;
4411                 p2p_freq_to_channel(p2p_group_get_freq(p2p->groups[0]),
4412                                     &op_class, &channel);
4413         } else if (client_freq > 0) {
4414                 role = P2P_CLIENT_IN_A_GROUP;
4415                 p2p_freq_to_channel(client_freq, &op_class, &channel);
4416         }
4417
4418         p2p_buf_add_oob_go_neg_channel(buf, p2p->cfg->country, op_class,
4419                                        channel, role);
4420
4421         if (p2p->num_groups > 0) {
4422                 /* Limit number of clients to avoid very long message */
4423                 p2p_buf_add_group_info(p2p->groups[0], buf, 5);
4424                 p2p_group_buf_add_id(p2p->groups[0], buf);
4425         } else if (client_freq > 0 &&
4426                    go_dev_addr && !is_zero_ether_addr(go_dev_addr) &&
4427                    ssid && ssid_len > 0) {
4428                 /*
4429                  * Add the optional P2P Group ID to indicate in which group this
4430                  * device is a P2P Client.
4431                  */
4432                 p2p_buf_add_group_id(buf, go_dev_addr, ssid, ssid_len);
4433         }
4434
4435         return buf;
4436 }
4437
4438
4439 struct wpabuf * p2p_build_nfc_handover_req(struct p2p_data *p2p,
4440                                            int client_freq,
4441                                            const u8 *go_dev_addr,
4442                                            const u8 *ssid, size_t ssid_len)
4443 {
4444         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4445                                       ssid_len);
4446 }
4447
4448
4449 struct wpabuf * p2p_build_nfc_handover_sel(struct p2p_data *p2p,
4450                                            int client_freq,
4451                                            const u8 *go_dev_addr,
4452                                            const u8 *ssid, size_t ssid_len)
4453 {
4454         return p2p_build_nfc_handover(p2p, client_freq, go_dev_addr, ssid,
4455                                       ssid_len);
4456 }
4457
4458
4459 int p2p_process_nfc_connection_handover(struct p2p_data *p2p,
4460                                         struct p2p_nfc_params *params)
4461 {
4462         struct p2p_message msg;
4463         struct p2p_device *dev;
4464         const u8 *p2p_dev_addr;
4465         int freq;
4466         enum p2p_role_indication role;
4467
4468         params->next_step = NO_ACTION;
4469
4470         if (p2p_parse_ies_separate(params->wsc_attr, params->wsc_len,
4471                                    params->p2p_attr, params->p2p_len, &msg)) {
4472                 p2p_dbg(p2p, "Failed to parse WSC/P2P attributes from NFC");
4473                 p2p_parse_free(&msg);
4474                 return -1;
4475         }
4476
4477         if (msg.p2p_device_addr)
4478                 p2p_dev_addr = msg.p2p_device_addr;
4479         else if (msg.device_id)
4480                 p2p_dev_addr = msg.device_id;
4481         else {
4482                 p2p_dbg(p2p, "Ignore scan data without P2P Device Info or P2P Device Id");
4483                 p2p_parse_free(&msg);
4484                 return -1;
4485         }
4486
4487         if (msg.oob_dev_password) {
4488                 os_memcpy(params->oob_dev_pw, msg.oob_dev_password,
4489                           msg.oob_dev_password_len);
4490                 params->oob_dev_pw_len = msg.oob_dev_password_len;
4491         }
4492
4493         dev = p2p_create_device(p2p, p2p_dev_addr);
4494         if (dev == NULL) {
4495                 p2p_parse_free(&msg);
4496                 return -1;
4497         }
4498
4499         params->peer = &dev->info;
4500
4501         os_get_reltime(&dev->last_seen);
4502         dev->flags &= ~(P2P_DEV_PROBE_REQ_ONLY | P2P_DEV_GROUP_CLIENT_ONLY);
4503         p2p_copy_wps_info(p2p, dev, 0, &msg);
4504
4505         if (!msg.oob_go_neg_channel) {
4506                 p2p_dbg(p2p, "OOB GO Negotiation Channel attribute not included");
4507                 return -1;
4508         }
4509
4510         if (msg.oob_go_neg_channel[3] == 0 &&
4511             msg.oob_go_neg_channel[4] == 0)
4512                 freq = 0;
4513         else
4514                 freq = p2p_channel_to_freq(msg.oob_go_neg_channel[3],
4515                                            msg.oob_go_neg_channel[4]);
4516         if (freq < 0) {
4517                 p2p_dbg(p2p, "Unknown peer OOB GO Neg channel");
4518                 return -1;
4519         }
4520         role = msg.oob_go_neg_channel[5];
4521
4522         if (role == P2P_GO_IN_A_GROUP) {
4523                 p2p_dbg(p2p, "Peer OOB GO operating channel: %u MHz", freq);
4524                 params->go_freq = freq;
4525         } else if (role == P2P_CLIENT_IN_A_GROUP) {
4526                 p2p_dbg(p2p, "Peer (client) OOB GO operating channel: %u MHz",
4527                         freq);
4528                 params->go_freq = freq;
4529         } else
4530                 p2p_dbg(p2p, "Peer OOB GO Neg channel: %u MHz", freq);
4531         dev->oob_go_neg_freq = freq;
4532
4533         if (!params->sel && role != P2P_GO_IN_A_GROUP) {
4534                 freq = p2p_channel_to_freq(p2p->cfg->reg_class,
4535                                            p2p->cfg->channel);
4536                 if (freq < 0) {
4537                         p2p_dbg(p2p, "Own listen channel not known");
4538                         return -1;
4539                 }
4540                 p2p_dbg(p2p, "Use own Listen channel as OOB GO Neg channel: %u MHz", freq);
4541                 dev->oob_go_neg_freq = freq;
4542         }
4543
4544         if (msg.group_id) {
4545                 os_memcpy(params->go_dev_addr, msg.group_id, ETH_ALEN);
4546                 params->go_ssid_len = msg.group_id_len - ETH_ALEN;
4547                 os_memcpy(params->go_ssid, msg.group_id + ETH_ALEN,
4548                           params->go_ssid_len);
4549         }
4550
4551         p2p_parse_free(&msg);
4552
4553         if (dev->flags & P2P_DEV_USER_REJECTED) {
4554                 p2p_dbg(p2p, "Do not report rejected device");
4555                 return 0;
4556         }
4557
4558         if (!(dev->flags & P2P_DEV_REPORTED)) {
4559                 p2p->cfg->dev_found(p2p->cfg->cb_ctx, p2p_dev_addr, &dev->info,
4560                                     !(dev->flags & P2P_DEV_REPORTED_ONCE));
4561                 dev->flags |= P2P_DEV_REPORTED | P2P_DEV_REPORTED_ONCE;
4562         }
4563
4564         if (role == P2P_GO_IN_A_GROUP && p2p->num_groups > 0)
4565                 params->next_step = BOTH_GO;
4566         else if (role == P2P_GO_IN_A_GROUP)
4567                 params->next_step = JOIN_GROUP;
4568         else if (role == P2P_CLIENT_IN_A_GROUP) {
4569                 dev->flags |= P2P_DEV_GROUP_CLIENT_ONLY;
4570                 params->next_step = PEER_CLIENT;
4571         } else if (p2p->num_groups > 0)
4572                 params->next_step = AUTH_JOIN;
4573         else if (params->sel)
4574                 params->next_step = INIT_GO_NEG;
4575         else
4576                 params->next_step = RESP_GO_NEG;
4577
4578         return 0;
4579 }
4580
4581
4582 void p2p_set_authorized_oob_dev_pw_id(struct p2p_data *p2p, u16 dev_pw_id,
4583                                       int go_intent,
4584                                       const u8 *own_interface_addr)
4585 {
4586
4587         p2p->authorized_oob_dev_pw_id = dev_pw_id;
4588         if (dev_pw_id == 0) {
4589                 p2p_dbg(p2p, "NFC OOB Password unauthorized for static handover");
4590                 return;
4591         }
4592
4593         p2p_dbg(p2p, "NFC OOB Password (id=%u) authorized for static handover",
4594                 dev_pw_id);
4595
4596         p2p->go_intent = go_intent;
4597         os_memcpy(p2p->intended_addr, own_interface_addr, ETH_ALEN);
4598 }
4599
4600 #endif /* CONFIG_WPS_NFC */