wpa_supplicant/p2p_supplicant.c

   1 /*
   2  * wpa_supplicant - P2P
   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_common.h"
  14 #include "common/ieee802_11_defs.h"
  15 #include "common/wpa_ctrl.h"
  16 #include "wps/wps_i.h"
  17 #include "p2p/p2p.h"
  18 #include "ap/hostapd.h"
  19 #include "ap/ap_config.h"
  20 #include "ap/p2p_hostapd.h"
  21 #include "eapol_supp/eapol_supp_sm.h"
  22 #include "rsn_supp/wpa.h"
  23 #include "wpa_supplicant_i.h"
  24 #include "driver_i.h"
  25 #include "ap.h"
  26 #include "config_ssid.h"
  27 #include "config.h"
  28 #include "notify.h"
  29 #include "scan.h"
  30 #include "bss.h"
  31 #include "offchannel.h"
  32 #include "wps_supplicant.h"
  33 #include "p2p_supplicant.h"
  34
  35
  36 /*
  37  * How many times to try to scan to find the GO before giving up on join
  38  * request.
  39  */
  40 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  41
  42 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
  43
  44 #ifndef P2P_MAX_CLIENT_IDLE
  45 /*
  46  * How many seconds to try to reconnect to the GO when connection in P2P client
  47  * role has been lost.
  48  */
  49 #define P2P_MAX_CLIENT_IDLE 10
  50 #endif /* P2P_MAX_CLIENT_IDLE */
  51
  52 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  53 /*
  54  * How many seconds to wait for initial 4-way handshake to get completed after
  55  * WPS provisioning step.
  56  */
  57 #define P2P_MAX_INITIAL_CONN_WAIT 10
  58 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  59
  60 #ifndef P2P_CONCURRENT_SEARCH_DELAY
  61 #define P2P_CONCURRENT_SEARCH_DELAY 500
  62 #endif /* P2P_CONCURRENT_SEARCH_DELAY */
  63
  64 enum p2p_group_removal_reason {
  65         P2P_GROUP_REMOVAL_UNKNOWN,
  66         P2P_GROUP_REMOVAL_SILENT,
  67         P2P_GROUP_REMOVAL_FORMATION_FAILED,
  68         P2P_GROUP_REMOVAL_REQUESTED,
  69         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
  70         P2P_GROUP_REMOVAL_UNAVAILABLE,
  71         P2P_GROUP_REMOVAL_GO_ENDING_SESSION
  72 };
  73
  74
  75 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  76 static struct wpa_supplicant *
  77 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
  78                          int go);
  79 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s);
  80 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq);
  81 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
  82 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
  83                          const u8 *dev_addr, enum p2p_wps_method wps_method,
  84                          int auto_join);
  85 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
  86 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
  87 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
  88 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
  89 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
  90                                         int group_added);
  91 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
  92
  93
  94 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
  95                                       struct wpa_scan_results *scan_res)
  96 {
  97         size_t i;
  98
  99         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 100                 return;
 101
 102         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 103                    (int) scan_res->num);
 104
 105         for (i = 0; i < scan_res->num; i++) {
 106                 struct wpa_scan_res *bss = scan_res->res[i];
 107                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 108                                          bss->freq, bss->level,
 109                                          (const u8 *) (bss + 1),
 110                                          bss->ie_len) > 0)
 111                         break;
 112         }
 113
 114         p2p_scan_res_handled(wpa_s->global->p2p);
 115 }
 116
 117
 118 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 119                          unsigned int num_req_dev_types,
 120                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 121 {
 122         struct wpa_supplicant *wpa_s = ctx;
 123         struct wpa_supplicant *ifs;
 124         struct wpa_driver_scan_params params;
 125         int ret;
 126         struct wpabuf *wps_ie, *ies;
 127         int social_channels[] = { 2412, 2437, 2462, 0, 0 };
 128         size_t ielen;
 129
 130         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 131                 return -1;
 132
 133         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
 134                 if (ifs->sta_scan_pending &&
 135                     wpas_p2p_in_progress(wpa_s) == 2) {
 136                         wpa_printf(MSG_DEBUG, "Delaying P2P scan to allow "
 137                                    "pending station mode scan to be "
 138                                    "completed on interface %s", ifs->ifname);
 139                         wpa_s->global->p2p_cb_on_scan_complete = 1;
 140                         wpa_supplicant_req_scan(ifs, 0, 0);
 141                         return 1;
 142                 }
 143         }
 144
 145         os_memset(&params, 0, sizeof(params));
 146
 147         /* P2P Wildcard SSID */
 148         params.num_ssids = 1;
 149         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
 150         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 151
 152         wpa_s->wps->dev.p2p = 1;
 153         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 154                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 155                                         num_req_dev_types, req_dev_types);
 156         if (wps_ie == NULL)
 157                 return -1;
 158
 159         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 160         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 161         if (ies == NULL) {
 162                 wpabuf_free(wps_ie);
 163                 return -1;
 164         }
 165         wpabuf_put_buf(ies, wps_ie);
 166         wpabuf_free(wps_ie);
 167
 168         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 169
 170         params.p2p_probe = 1;
 171         params.extra_ies = wpabuf_head(ies);
 172         params.extra_ies_len = wpabuf_len(ies);
 173
 174         switch (type) {
 175         case P2P_SCAN_SOCIAL:
 176                 params.freqs = social_channels;
 177                 break;
 178         case P2P_SCAN_FULL:
 179                 break;
 180         case P2P_SCAN_SOCIAL_PLUS_ONE:
 181                 social_channels[3] = freq;
 182                 params.freqs = social_channels;
 183                 break;
 184         }
 185
 186         ret = wpa_drv_scan(wpa_s, &params);
 187
 188         wpabuf_free(ies);
 189
 190         if (ret) {
 191                 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
 192                         if (ifs->scanning ||
 193                             ifs->scan_res_handler == wpas_p2p_scan_res_handler) {
 194                                 wpa_s->global->p2p_cb_on_scan_complete = 1;
 195                                 ret = 1;
 196                                 break;
 197                         }
 198                 }
 199         } else
 200                 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 201
 202         return ret;
 203 }
 204
 205
 206 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 207 {
 208         switch (p2p_group_interface) {
 209         case P2P_GROUP_INTERFACE_PENDING:
 210                 return WPA_IF_P2P_GROUP;
 211         case P2P_GROUP_INTERFACE_GO:
 212                 return WPA_IF_P2P_GO;
 213         case P2P_GROUP_INTERFACE_CLIENT:
 214                 return WPA_IF_P2P_CLIENT;
 215         }
 216
 217         return WPA_IF_P2P_GROUP;
 218 }
 219
 220
 221 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 222                                                   const u8 *ssid,
 223                                                   size_t ssid_len, int *go)
 224 {
 225         struct wpa_ssid *s;
 226
 227         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 228                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 229                         if (s->disabled != 0 || !s->p2p_group ||
 230                             s->ssid_len != ssid_len ||
 231                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 232                                 continue;
 233                         if (s->mode == WPAS_MODE_P2P_GO &&
 234                             s != wpa_s->current_ssid)
 235                                 continue;
 236                         if (go)
 237                                 *go = s->mode == WPAS_MODE_P2P_GO;
 238                         return wpa_s;
 239                 }
 240         }
 241
 242         return NULL;
 243 }
 244
 245
 246 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 247                                  enum p2p_group_removal_reason removal_reason)
 248 {
 249         struct wpa_ssid *ssid;
 250         char *gtype;
 251         const char *reason;
 252
 253         ssid = wpa_s->current_ssid;
 254         if (ssid == NULL) {
 255                 /*
 256                  * The current SSID was not known, but there may still be a
 257                  * pending P2P group interface waiting for provisioning or a
 258                  * P2P group that is trying to reconnect.
 259                  */
 260                 ssid = wpa_s->conf->ssid;
 261                 while (ssid) {
 262                         if (ssid->p2p_group && ssid->disabled != 2)
 263                                 break;
 264                         ssid = ssid->next;
 265                 }
 266                 if (ssid == NULL &&
 267                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 268                 {
 269                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 270                                    "not found");
 271                         return -1;
 272                 }
 273         }
 274         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 275                 gtype = "GO";
 276         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 277                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 278                 wpa_s->reassociate = 0;
 279                 wpa_s->disconnected = 1;
 280                 wpa_supplicant_deauthenticate(wpa_s,
 281                                               WLAN_REASON_DEAUTH_LEAVING);
 282                 gtype = "client";
 283         } else
 284                 gtype = "GO";
 285         if (wpa_s->cross_connect_in_use) {
 286                 wpa_s->cross_connect_in_use = 0;
 287                 wpa_msg(wpa_s->parent, MSG_INFO,
 288                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 289                         wpa_s->ifname, wpa_s->cross_connect_uplink);
 290         }
 291         switch (removal_reason) {
 292         case P2P_GROUP_REMOVAL_REQUESTED:
 293                 reason = " reason=REQUESTED";
 294                 break;
 295         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 296                 reason = " reason=FORMATION_FAILED";
 297                 break;
 298         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 299                 reason = " reason=IDLE";
 300                 break;
 301         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 302                 reason = " reason=UNAVAILABLE";
 303                 break;
 304         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 305                 reason = " reason=GO_ENDING_SESSION";
 306                 break;
 307         default:
 308                 reason = "";
 309                 break;
 310         }
 311         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 312                 wpa_msg(wpa_s->parent, MSG_INFO,
 313                         P2P_EVENT_GROUP_REMOVED "%s %s%s",
 314                         wpa_s->ifname, gtype, reason);
 315         }
 316
 317         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 318                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 319
 320         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 321                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 322
 323         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 324                 struct wpa_global *global;
 325                 char *ifname;
 326                 enum wpa_driver_if_type type;
 327                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 328                         wpa_s->ifname);
 329                 global = wpa_s->global;
 330                 ifname = os_strdup(wpa_s->ifname);
 331                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 332                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 333                 wpa_s = global->ifaces;
 334                 if (wpa_s && ifname)
 335                         wpa_drv_if_remove(wpa_s, type, ifname);
 336                 os_free(ifname);
 337                 return 1;
 338         }
 339
 340         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 341         if (ssid && (ssid->p2p_group ||
 342                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 343                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 344                 int id = ssid->id;
 345                 if (ssid == wpa_s->current_ssid) {
 346                         wpa_sm_set_config(wpa_s->wpa, NULL);
 347                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 348                         wpa_s->current_ssid = NULL;
 349                 }
 350                 /*
 351                  * Networks objects created during any P2P activities are not
 352                  * exposed out as they might/will confuse certain non-P2P aware
 353                  * applications since these network objects won't behave like
 354                  * regular ones.
 355                  *
 356                  * Likewise, we don't send out network removed signals for such
 357                  * network objects.
 358                  */
 359                 wpa_config_remove_network(wpa_s->conf, id);
 360                 wpa_supplicant_clear_status(wpa_s);
 361                 wpa_supplicant_cancel_sched_scan(wpa_s);
 362                 wpa_s->sta_scan_pending = 0;
 363         } else {
 364                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 365                            "found");
 366         }
 367         if (wpa_s->ap_iface)
 368                 wpa_supplicant_ap_deinit(wpa_s);
 369         else
 370                 wpa_drv_deinit_p2p_cli(wpa_s);
 371
 372         return 0;
 373 }
 374
 375
 376 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 377                                      u8 *go_dev_addr,
 378                                      const u8 *ssid, size_t ssid_len)
 379 {
 380         struct wpa_bss *bss;
 381         const u8 *bssid;
 382         struct wpabuf *p2p;
 383         u8 group_capab;
 384         const u8 *addr;
 385
 386         if (wpa_s->go_params)
 387                 bssid = wpa_s->go_params->peer_interface_addr;
 388         else
 389                 bssid = wpa_s->bssid;
 390
 391         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 392         if (bss == NULL) {
 393                 u8 iface_addr[ETH_ALEN];
 394                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 395                                            iface_addr) == 0)
 396                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 397         }
 398         if (bss == NULL) {
 399                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 400                            "group is persistent - BSS " MACSTR " not found",
 401                            MAC2STR(bssid));
 402                 return 0;
 403         }
 404
 405         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 406         if (p2p == NULL) {
 407                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 408                            "group is persistent - BSS " MACSTR
 409                            " did not include P2P IE", MAC2STR(bssid));
 410                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 411                             (u8 *) (bss + 1), bss->ie_len);
 412                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 413                             ((u8 *) bss + 1) + bss->ie_len,
 414                             bss->beacon_ie_len);
 415                 return 0;
 416         }
 417
 418         group_capab = p2p_get_group_capab(p2p);
 419         addr = p2p_get_go_dev_addr(p2p);
 420         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 421                    "group_capab=0x%x", group_capab);
 422         if (addr) {
 423                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
 424                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
 425                            MAC2STR(addr));
 426         } else
 427                 os_memset(go_dev_addr, 0, ETH_ALEN);
 428         wpabuf_free(p2p);
 429
 430         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
 431                    "go_dev_addr=" MACSTR,
 432                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
 433
 434         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
 435 }
 436
 437
 438 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
 439                                            struct wpa_ssid *ssid,
 440                                            const u8 *go_dev_addr)
 441 {
 442         struct wpa_ssid *s;
 443         int changed = 0;
 444
 445         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
 446                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
 447         for (s = wpa_s->conf->ssid; s; s = s->next) {
 448                 if (s->disabled == 2 &&
 449                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
 450                     s->ssid_len == ssid->ssid_len &&
 451                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
 452                         break;
 453         }
 454
 455         if (s) {
 456                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
 457                            "entry");
 458                 if (ssid->passphrase && !s->passphrase)
 459                         changed = 1;
 460                 else if (ssid->passphrase && s->passphrase &&
 461                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
 462                         changed = 1;
 463         } else {
 464                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
 465                            "entry");
 466                 changed = 1;
 467                 s = wpa_config_add_network(wpa_s->conf);
 468                 if (s == NULL)
 469                         return -1;
 470
 471                 /*
 472                  * Instead of network_added we emit persistent_group_added
 473                  * notification. Also to keep the defense checks in
 474                  * persistent_group obj registration method, we set the
 475                  * relevant flags in s to designate it as a persistent group.
 476                  */
 477                 s->p2p_group = 1;
 478                 s->p2p_persistent_group = 1;
 479                 wpas_notify_persistent_group_added(wpa_s, s);
 480                 wpa_config_set_network_defaults(s);
 481         }
 482
 483         s->p2p_group = 1;
 484         s->p2p_persistent_group = 1;
 485         s->disabled = 2;
 486         s->bssid_set = 1;
 487         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
 488         s->mode = ssid->mode;
 489         s->auth_alg = WPA_AUTH_ALG_OPEN;
 490         s->key_mgmt = WPA_KEY_MGMT_PSK;
 491         s->proto = WPA_PROTO_RSN;
 492         s->pairwise_cipher = WPA_CIPHER_CCMP;
 493         s->export_keys = 1;
 494         if (ssid->passphrase) {
 495                 os_free(s->passphrase);
 496                 s->passphrase = os_strdup(ssid->passphrase);
 497         }
 498         if (ssid->psk_set) {
 499                 s->psk_set = 1;
 500                 os_memcpy(s->psk, ssid->psk, 32);
 501         }
 502         if (s->passphrase && !s->psk_set)
 503                 wpa_config_update_psk(s);
 504         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
 505                 os_free(s->ssid);
 506                 s->ssid = os_malloc(ssid->ssid_len);
 507         }
 508         if (s->ssid) {
 509                 s->ssid_len = ssid->ssid_len;
 510                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
 511         }
 512
 513 #ifndef CONFIG_NO_CONFIG_WRITE
 514         if (changed && wpa_s->conf->update_config &&
 515             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 516                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 517         }
 518 #endif /* CONFIG_NO_CONFIG_WRITE */
 519
 520         return s->id;
 521 }
 522
 523
 524 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
 525                                                  const u8 *addr)
 526 {
 527         struct wpa_ssid *ssid, *s;
 528         u8 *n;
 529         size_t i;
 530         int found = 0;
 531
 532         ssid = wpa_s->current_ssid;
 533         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
 534             !ssid->p2p_persistent_group)
 535                 return;
 536
 537         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
 538                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
 539                         continue;
 540
 541                 if (s->ssid_len == ssid->ssid_len &&
 542                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
 543                         break;
 544         }
 545
 546         if (s == NULL)
 547                 return;
 548
 549         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
 550                 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
 551                               ETH_ALEN) != 0)
 552                         continue;
 553
 554                 if (i == s->num_p2p_clients - 1)
 555                         return; /* already the most recent entry */
 556
 557                 /* move the entry to mark it most recent */
 558                 os_memmove(s->p2p_client_list + i * ETH_ALEN,
 559                            s->p2p_client_list + (i + 1) * ETH_ALEN,
 560                            (s->num_p2p_clients - i - 1) * ETH_ALEN);
 561                 os_memcpy(s->p2p_client_list +
 562                           (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
 563                 found = 1;
 564                 break;
 565         }
 566
 567         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
 568                 n = os_realloc_array(s->p2p_client_list,
 569                                      s->num_p2p_clients + 1, ETH_ALEN);
 570                 if (n == NULL)
 571                         return;
 572                 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
 573                 s->p2p_client_list = n;
 574                 s->num_p2p_clients++;
 575         } else if (!found) {
 576                 /* Not enough room for an additional entry - drop the oldest
 577                  * entry */
 578                 os_memmove(s->p2p_client_list,
 579                            s->p2p_client_list + ETH_ALEN,
 580                            (s->num_p2p_clients - 1) * ETH_ALEN);
 581                 os_memcpy(s->p2p_client_list +
 582                           (s->num_p2p_clients - 1) * ETH_ALEN,
 583                           addr, ETH_ALEN);
 584         }
 585
 586 #ifndef CONFIG_NO_CONFIG_WRITE
 587         if (wpa_s->parent->conf->update_config &&
 588             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
 589                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 590 #endif /* CONFIG_NO_CONFIG_WRITE */
 591 }
 592
 593
 594 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 595                                            int success)
 596 {
 597         struct wpa_ssid *ssid;
 598         const char *ssid_txt;
 599         int client;
 600         int persistent;
 601         u8 go_dev_addr[ETH_ALEN];
 602         int network_id = -1;
 603
 604         /*
 605          * This callback is likely called for the main interface. Update wpa_s
 606          * to use the group interface if a new interface was created for the
 607          * group.
 608          */
 609         if (wpa_s->global->p2p_group_formation)
 610                 wpa_s = wpa_s->global->p2p_group_formation;
 611         wpa_s->global->p2p_group_formation = NULL;
 612         wpa_s->p2p_in_provisioning = 0;
 613
 614         if (!success) {
 615                 wpa_msg(wpa_s->parent, MSG_INFO,
 616                         P2P_EVENT_GROUP_FORMATION_FAILURE);
 617                 wpas_p2p_group_delete(wpa_s,
 618                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
 619                 return;
 620         }
 621
 622         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS);
 623
 624         ssid = wpa_s->current_ssid;
 625         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 626                 ssid->mode = WPAS_MODE_P2P_GO;
 627                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 628                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 629         }
 630
 631         persistent = 0;
 632         if (ssid) {
 633                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 634                 client = ssid->mode == WPAS_MODE_INFRA;
 635                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 636                         persistent = ssid->p2p_persistent_group;
 637                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
 638                                   ETH_ALEN);
 639                 } else
 640                         persistent = wpas_p2p_persistent_group(wpa_s,
 641                                                                go_dev_addr,
 642                                                                ssid->ssid,
 643                                                                ssid->ssid_len);
 644         } else {
 645                 ssid_txt = "";
 646                 client = wpa_s->p2p_group_interface ==
 647                         P2P_GROUP_INTERFACE_CLIENT;
 648                 os_memset(go_dev_addr, 0, ETH_ALEN);
 649         }
 650
 651         wpa_s->show_group_started = 0;
 652         if (client) {
 653                 /*
 654                  * Indicate event only after successfully completed 4-way
 655                  * handshake, i.e., when the interface is ready for data
 656                  * packets.
 657                  */
 658                 wpa_s->show_group_started = 1;
 659         } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
 660                 char psk[65];
 661                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
 662                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 663                         "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR
 664                         "%s",
 665                         wpa_s->ifname, ssid_txt, ssid->frequency, psk,
 666                         MAC2STR(go_dev_addr),
 667                         persistent ? " [PERSISTENT]" : "");
 668                 wpas_p2p_cross_connect_setup(wpa_s);
 669                 wpas_p2p_set_group_idle_timeout(wpa_s);
 670         } else {
 671                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 672                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 673                         "go_dev_addr=" MACSTR "%s",
 674                         wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0,
 675                         ssid && ssid->passphrase ? ssid->passphrase : "",
 676                         MAC2STR(go_dev_addr),
 677                         persistent ? " [PERSISTENT]" : "");
 678                 wpas_p2p_cross_connect_setup(wpa_s);
 679                 wpas_p2p_set_group_idle_timeout(wpa_s);
 680         }
 681
 682         if (persistent)
 683                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
 684                                                              ssid, go_dev_addr);
 685         if (network_id < 0 && ssid)
 686                 network_id = ssid->id;
 687         if (!client)
 688                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 689 }
 690
 691
 692 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
 693                                            unsigned int freq,
 694                                            const u8 *dst, const u8 *src,
 695                                            const u8 *bssid,
 696                                            const u8 *data, size_t data_len,
 697                                            enum offchannel_send_action_result
 698                                            result)
 699 {
 700         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
 701
 702         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
 703                 return;
 704         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
 705                 return;
 706
 707         switch (result) {
 708         case OFFCHANNEL_SEND_ACTION_SUCCESS:
 709                 res = P2P_SEND_ACTION_SUCCESS;
 710                 break;
 711         case OFFCHANNEL_SEND_ACTION_NO_ACK:
 712                 res = P2P_SEND_ACTION_NO_ACK;
 713                 break;
 714         case OFFCHANNEL_SEND_ACTION_FAILED:
 715                 res = P2P_SEND_ACTION_FAILED;
 716                 break;
 717         }
 718
 719         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
 720
 721         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
 722             wpa_s->pending_pd_before_join &&
 723             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
 724              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
 725             wpa_s->p2p_fallback_to_go_neg) {
 726                 wpa_s->pending_pd_before_join = 0;
 727                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
 728                         "during p2p_connect-auto");
 729                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
 730                 return;
 731         }
 732 }
 733
 734
 735 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
 736                             const u8 *src, const u8 *bssid, const u8 *buf,
 737                             size_t len, unsigned int wait_time)
 738 {
 739         struct wpa_supplicant *wpa_s = ctx;
 740         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
 741                                       wait_time,
 742                                       wpas_p2p_send_action_tx_status, 1);
 743 }
 744
 745
 746 static void wpas_send_action_done(void *ctx)
 747 {
 748         struct wpa_supplicant *wpa_s = ctx;
 749         offchannel_send_action_done(wpa_s);
 750 }
 751
 752
 753 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
 754                                     struct p2p_go_neg_results *params)
 755 {
 756         if (wpa_s->go_params == NULL) {
 757                 wpa_s->go_params = os_malloc(sizeof(*params));
 758                 if (wpa_s->go_params == NULL)
 759                         return -1;
 760         }
 761         os_memcpy(wpa_s->go_params, params, sizeof(*params));
 762         return 0;
 763 }
 764
 765
 766 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
 767                                     struct p2p_go_neg_results *res)
 768 {
 769         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR,
 770                    MAC2STR(res->peer_interface_addr));
 771         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
 772                           res->ssid, res->ssid_len);
 773         wpa_supplicant_ap_deinit(wpa_s);
 774         wpas_copy_go_neg_results(wpa_s, res);
 775         if (res->wps_method == WPS_PBC)
 776                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
 777         else {
 778                 u16 dev_pw_id = DEV_PW_DEFAULT;
 779                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
 780                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
 781                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
 782                                    wpa_s->p2p_pin, 1, dev_pw_id);
 783         }
 784 }
 785
 786
 787 static void p2p_go_configured(void *ctx, void *data)
 788 {
 789         struct wpa_supplicant *wpa_s = ctx;
 790         struct p2p_go_neg_results *params = data;
 791         struct wpa_ssid *ssid;
 792         int network_id = -1;
 793
 794         ssid = wpa_s->current_ssid;
 795         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
 796                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
 797                 if (wpa_s->global->p2p_group_formation == wpa_s)
 798                         wpa_s->global->p2p_group_formation = NULL;
 799                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 800                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 801                         "go_dev_addr=" MACSTR "%s",
 802                         wpa_s->ifname,
 803                         wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
 804                         ssid->frequency,
 805                         params->passphrase ? params->passphrase : "",
 806                         MAC2STR(wpa_s->global->p2p_dev_addr),
 807                         params->persistent_group ? " [PERSISTENT]" : "");
 808
 809                 if (params->persistent_group)
 810                         network_id = wpas_p2p_store_persistent_group(
 811                                 wpa_s->parent, ssid,
 812                                 wpa_s->global->p2p_dev_addr);
 813                 if (network_id < 0)
 814                         network_id = ssid->id;
 815                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 816                 wpas_p2p_cross_connect_setup(wpa_s);
 817                 wpas_p2p_set_group_idle_timeout(wpa_s);
 818                 return;
 819         }
 820
 821         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
 822         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
 823                                               params->peer_interface_addr)) {
 824                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
 825                            "filtering");
 826                 return;
 827         }
 828         if (params->wps_method == WPS_PBC)
 829                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
 830                                           params->peer_device_addr);
 831         else if (wpa_s->p2p_pin[0])
 832                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
 833                                           wpa_s->p2p_pin, NULL, 0, 0);
 834         os_free(wpa_s->go_params);
 835         wpa_s->go_params = NULL;
 836 }
 837
 838
 839 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
 840                               struct p2p_go_neg_results *params,
 841                               int group_formation)
 842 {
 843         struct wpa_ssid *ssid;
 844
 845         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
 846         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
 847                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
 848                         "results");
 849                 return;
 850         }
 851
 852         ssid = wpa_config_add_network(wpa_s->conf);
 853         if (ssid == NULL) {
 854                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
 855                 return;
 856         }
 857
 858         wpa_s->show_group_started = 0;
 859
 860         wpa_config_set_network_defaults(ssid);
 861         ssid->temporary = 1;
 862         ssid->p2p_group = 1;
 863         ssid->p2p_persistent_group = params->persistent_group;
 864         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
 865                 WPAS_MODE_P2P_GO;
 866         ssid->frequency = params->freq;
 867         ssid->ht40 = params->ht40;
 868         ssid->ssid = os_zalloc(params->ssid_len + 1);
 869         if (ssid->ssid) {
 870                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
 871                 ssid->ssid_len = params->ssid_len;
 872         }
 873         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 874         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 875         ssid->proto = WPA_PROTO_RSN;
 876         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 877         ssid->passphrase = os_strdup(params->passphrase);
 878         if (ssid->passphrase == NULL) {
 879                 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to copy passphrase for "
 880                         "GO");
 881                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 882                 return;
 883         }
 884         ssid->psk_set = params->psk_set;
 885         if (ssid->psk_set)
 886                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
 887         else
 888                 wpa_config_update_psk(ssid);
 889         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
 890
 891         wpa_s->ap_configured_cb = p2p_go_configured;
 892         wpa_s->ap_configured_cb_ctx = wpa_s;
 893         wpa_s->ap_configured_cb_data = wpa_s->go_params;
 894         wpa_s->connect_without_scan = ssid;
 895         wpa_s->reassociate = 1;
 896         wpa_s->disconnected = 0;
 897         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
 898                 "start GO)");
 899         wpa_supplicant_req_scan(wpa_s, 0, 0);
 900 }
 901
 902
 903 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
 904                                   const struct wpa_supplicant *src)
 905 {
 906         struct wpa_config *d;
 907         const struct wpa_config *s;
 908
 909         d = dst->conf;
 910         s = src->conf;
 911
 912 #define C(n) if (s->n) d->n = os_strdup(s->n)
 913         C(device_name);
 914         C(manufacturer);
 915         C(model_name);
 916         C(model_number);
 917         C(serial_number);
 918         C(config_methods);
 919 #undef C
 920
 921         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
 922         os_memcpy(d->sec_device_type, s->sec_device_type,
 923                   sizeof(d->sec_device_type));
 924         d->num_sec_device_types = s->num_sec_device_types;
 925
 926         d->p2p_group_idle = s->p2p_group_idle;
 927         d->p2p_intra_bss = s->p2p_intra_bss;
 928         d->persistent_reconnect = s->persistent_reconnect;
 929         d->max_num_sta = s->max_num_sta;
 930         d->pbc_in_m1 = s->pbc_in_m1;
 931 }
 932
 933
 934 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 935                                         enum wpa_driver_if_type type)
 936 {
 937         char ifname[120], force_ifname[120];
 938
 939         if (wpa_s->pending_interface_name[0]) {
 940                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
 941                            "- skip creation of a new one");
 942                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
 943                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
 944                                    "unknown?! ifname='%s'",
 945                                    wpa_s->pending_interface_name);
 946                         return -1;
 947                 }
 948                 return 0;
 949         }
 950
 951         os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname,
 952                     wpa_s->p2p_group_idx);
 953         if (os_strlen(ifname) >= IFNAMSIZ &&
 954             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
 955                 /* Try to avoid going over the IFNAMSIZ length limit */
 956                 os_snprintf(ifname, sizeof(ifname), "p2p-%d",
 957                             wpa_s->p2p_group_idx);
 958         }
 959         force_ifname[0] = '\0';
 960
 961         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
 962                    ifname);
 963         wpa_s->p2p_group_idx++;
 964
 965         wpa_s->pending_interface_type = type;
 966         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
 967                            wpa_s->pending_interface_addr, NULL) < 0) {
 968                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
 969                            "interface");
 970                 return -1;
 971         }
 972
 973         if (force_ifname[0]) {
 974                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
 975                            force_ifname);
 976                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
 977                            sizeof(wpa_s->pending_interface_name));
 978         } else
 979                 os_strlcpy(wpa_s->pending_interface_name, ifname,
 980                            sizeof(wpa_s->pending_interface_name));
 981         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
 982                    MACSTR, wpa_s->pending_interface_name,
 983                    MAC2STR(wpa_s->pending_interface_addr));
 984
 985         return 0;
 986 }
 987
 988
 989 static void wpas_p2p_remove_pending_group_interface(
 990         struct wpa_supplicant *wpa_s)
 991 {
 992         if (!wpa_s->pending_interface_name[0] ||
 993             is_zero_ether_addr(wpa_s->pending_interface_addr))
 994                 return; /* No pending virtual interface */
 995
 996         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
 997                    wpa_s->pending_interface_name);
 998         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
 999                           wpa_s->pending_interface_name);
1000         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1001         wpa_s->pending_interface_name[0] = '\0';
1002 }
1003
1004
1005 static struct wpa_supplicant *
1006 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1007 {
1008         struct wpa_interface iface;
1009         struct wpa_supplicant *group_wpa_s;
1010
1011         if (!wpa_s->pending_interface_name[0]) {
1012                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1013                 if (!wpas_p2p_create_iface(wpa_s))
1014                         return NULL;
1015                 /*
1016                  * Something has forced us to remove the pending interface; try
1017                  * to create a new one and hope for the best that we will get
1018                  * the same local address.
1019                  */
1020                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1021                                                  WPA_IF_P2P_CLIENT) < 0)
1022                         return NULL;
1023         }
1024
1025         os_memset(&iface, 0, sizeof(iface));
1026         iface.ifname = wpa_s->pending_interface_name;
1027         iface.driver = wpa_s->driver->name;
1028         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1029         iface.driver_param = wpa_s->conf->driver_param;
1030         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1031         if (group_wpa_s == NULL) {
1032                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1033                            "wpa_supplicant interface");
1034                 return NULL;
1035         }
1036         wpa_s->pending_interface_name[0] = '\0';
1037         group_wpa_s->parent = wpa_s;
1038         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1039                 P2P_GROUP_INTERFACE_CLIENT;
1040         wpa_s->global->p2p_group_formation = group_wpa_s;
1041
1042         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1043
1044         return group_wpa_s;
1045 }
1046
1047
1048 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1049                                              void *timeout_ctx)
1050 {
1051         struct wpa_supplicant *wpa_s = eloop_ctx;
1052         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1053         if (wpa_s->global->p2p)
1054                 p2p_group_formation_failed(wpa_s->global->p2p);
1055         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1056                 wpa_drv_p2p_group_formation_failed(wpa_s);
1057         wpas_group_formation_completed(wpa_s, 0);
1058 }
1059
1060
1061 void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1062 {
1063         struct wpa_supplicant *wpa_s = ctx;
1064
1065         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1066                 wpa_drv_cancel_remain_on_channel(wpa_s);
1067                 wpa_s->off_channel_freq = 0;
1068                 wpa_s->roc_waiting_drv_freq = 0;
1069         }
1070
1071         if (res->status) {
1072                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d",
1073                         res->status);
1074                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1075                 wpas_p2p_remove_pending_group_interface(wpa_s);
1076                 return;
1077         }
1078
1079         if (wpa_s->p2p_go_ht40)
1080                 res->ht40 = 1;
1081
1082         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS);
1083         wpas_notify_p2p_go_neg_completed(wpa_s, res);
1084
1085         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1086                 struct wpa_ssid *ssid;
1087                 ssid = wpa_config_get_network(wpa_s->conf,
1088                                               wpa_s->p2p_persistent_id);
1089                 if (ssid && ssid->disabled == 2 &&
1090                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1091                         size_t len = os_strlen(ssid->passphrase);
1092                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1093                                    "on requested persistent group");
1094                         os_memcpy(res->passphrase, ssid->passphrase, len);
1095                         res->passphrase[len] = '\0';
1096                 }
1097         }
1098
1099         if (wpa_s->create_p2p_iface) {
1100                 struct wpa_supplicant *group_wpa_s =
1101                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1102                 if (group_wpa_s == NULL) {
1103                         wpas_p2p_remove_pending_group_interface(wpa_s);
1104                         return;
1105                 }
1106                 if (group_wpa_s != wpa_s) {
1107                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1108                                   sizeof(group_wpa_s->p2p_pin));
1109                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1110                 }
1111                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1112                 wpa_s->pending_interface_name[0] = '\0';
1113                 group_wpa_s->p2p_in_provisioning = 1;
1114
1115                 if (res->role_go)
1116                         wpas_start_wps_go(group_wpa_s, res, 1);
1117                 else
1118                         wpas_start_wps_enrollee(group_wpa_s, res);
1119         } else {
1120                 wpa_s->p2p_in_provisioning = 1;
1121                 wpa_s->global->p2p_group_formation = wpa_s;
1122
1123                 if (res->role_go)
1124                         wpas_start_wps_go(wpa_s, res, 1);
1125                 else
1126                         wpas_start_wps_enrollee(ctx, res);
1127         }
1128
1129         wpa_s->p2p_long_listen = 0;
1130         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1131
1132         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1133         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1134                                (res->peer_config_timeout % 100) * 10000,
1135                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1136 }
1137
1138
1139 void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1140 {
1141         struct wpa_supplicant *wpa_s = ctx;
1142         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1143                 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1144
1145         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1146 }
1147
1148
1149 void wpas_dev_found(void *ctx, const u8 *addr,
1150                     const struct p2p_peer_info *info,
1151                     int new_device)
1152 {
1153 #ifndef CONFIG_NO_STDOUT_DEBUG
1154         struct wpa_supplicant *wpa_s = ctx;
1155         char devtype[WPS_DEV_TYPE_BUFSIZE];
1156
1157         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1158                 " p2p_dev_addr=" MACSTR
1159                 " pri_dev_type=%s name='%s' config_methods=0x%x "
1160                 "dev_capab=0x%x group_capab=0x%x",
1161                 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1162                 wps_dev_type_bin2str(info->pri_dev_type, devtype,
1163                                      sizeof(devtype)),
1164                 info->device_name, info->config_methods,
1165                 info->dev_capab, info->group_capab);
1166 #endif /* CONFIG_NO_STDOUT_DEBUG */
1167
1168         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1169 }
1170
1171
1172 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1173 {
1174         struct wpa_supplicant *wpa_s = ctx;
1175
1176         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1177                 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1178
1179         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1180 }
1181
1182
1183 static int wpas_start_listen(void *ctx, unsigned int freq,
1184                              unsigned int duration,
1185                              const struct wpabuf *probe_resp_ie)
1186 {
1187         struct wpa_supplicant *wpa_s = ctx;
1188
1189         wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL);
1190
1191         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1192                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1193                            "report received Probe Request frames");
1194                 return -1;
1195         }
1196
1197         wpa_s->pending_listen_freq = freq;
1198         wpa_s->pending_listen_duration = duration;
1199
1200         if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) {
1201                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1202                            "to remain on channel (%u MHz) for Listen "
1203                            "state", freq);
1204                 wpa_s->pending_listen_freq = 0;
1205                 return -1;
1206         }
1207         wpa_s->off_channel_freq = 0;
1208         wpa_s->roc_waiting_drv_freq = freq;
1209
1210         return 0;
1211 }
1212
1213
1214 static void wpas_stop_listen(void *ctx)
1215 {
1216         struct wpa_supplicant *wpa_s = ctx;
1217         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1218                 wpa_drv_cancel_remain_on_channel(wpa_s);
1219                 wpa_s->off_channel_freq = 0;
1220                 wpa_s->roc_waiting_drv_freq = 0;
1221         }
1222         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1223         wpa_drv_probe_req_report(wpa_s, 0);
1224 }
1225
1226
1227 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1228 {
1229         struct wpa_supplicant *wpa_s = ctx;
1230         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1231 }
1232
1233
1234 /*
1235  * DNS Header section is used only to calculate compression pointers, so the
1236  * contents of this data does not matter, but the length needs to be reserved
1237  * in the virtual packet.
1238  */
1239 #define DNS_HEADER_LEN 12
1240
1241 /*
1242  * 27-octet in-memory packet from P2P specification containing two implied
1243  * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN
1244  */
1245 #define P2P_SD_IN_MEMORY_LEN 27
1246
1247 static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start,
1248                                        u8 **spos, const u8 *end)
1249 {
1250         while (*spos < end) {
1251                 u8 val = ((*spos)[0] & 0xc0) >> 6;
1252                 int len;
1253
1254                 if (val == 1 || val == 2) {
1255                         /* These are reserved values in RFC 1035 */
1256                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1257                                    "sequence starting with 0x%x", val);
1258                         return -1;
1259                 }
1260
1261                 if (val == 3) {
1262                         u16 offset;
1263                         u8 *spos_tmp;
1264
1265                         /* Offset */
1266                         if (*spos + 2 > end) {
1267                                 wpa_printf(MSG_DEBUG, "P2P: No room for full "
1268                                            "DNS offset field");
1269                                 return -1;
1270                         }
1271
1272                         offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1];
1273                         if (offset >= *spos - start) {
1274                                 wpa_printf(MSG_DEBUG, "P2P: Invalid DNS "
1275                                            "pointer offset %u", offset);
1276                                 return -1;
1277                         }
1278
1279                         (*spos) += 2;
1280                         spos_tmp = start + offset;
1281                         return p2p_sd_dns_uncompress_label(upos, uend, start,
1282                                                            &spos_tmp,
1283                                                            *spos - 2);
1284                 }
1285
1286                 /* Label */
1287                 len = (*spos)[0] & 0x3f;
1288                 if (len == 0)
1289                         return 0;
1290
1291                 (*spos)++;
1292                 if (*spos + len > end) {
1293                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1294                                    "sequence - no room for label with length "
1295                                    "%u", len);
1296                         return -1;
1297                 }
1298
1299                 if (*upos + len + 2 > uend)
1300                         return -2;
1301
1302                 os_memcpy(*upos, *spos, len);
1303                 *spos += len;
1304                 *upos += len;
1305                 (*upos)[0] = '.';
1306                 (*upos)++;
1307                 (*upos)[0] = '\0';
1308         }
1309
1310         return 0;
1311 }
1312
1313
1314 /* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet.
1315  * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is
1316  * not large enough */
1317 static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg,
1318                                  size_t msg_len, size_t offset)
1319 {
1320         /* 27-octet in-memory packet from P2P specification */
1321         const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01"
1322                 "\x04_udp\xC0\x11\x00\x0C\x00\x01";
1323         u8 *tmp, *end, *spos;
1324         char *upos, *uend;
1325         int ret = 0;
1326
1327         if (buf_len < 2)
1328                 return -1;
1329         if (offset > msg_len)
1330                 return -1;
1331
1332         tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len);
1333         if (tmp == NULL)
1334                 return -1;
1335         spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN;
1336         end = spos + msg_len;
1337         spos += offset;
1338
1339         os_memset(tmp, 0, DNS_HEADER_LEN);
1340         os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN);
1341         os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len);
1342
1343         upos = buf;
1344         uend = buf + buf_len;
1345
1346         ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end);
1347         if (ret) {
1348                 os_free(tmp);
1349                 return ret;
1350         }
1351
1352         if (upos == buf) {
1353                 upos[0] = '.';
1354                 upos[1] = '\0';
1355         } else if (upos[-1] == '.')
1356                 upos[-1] = '\0';
1357
1358         os_free(tmp);
1359         return 0;
1360 }
1361
1362
1363 static struct p2p_srv_bonjour *
1364 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1365                              const struct wpabuf *query)
1366 {
1367         struct p2p_srv_bonjour *bsrv;
1368         size_t len;
1369
1370         len = wpabuf_len(query);
1371         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1372                          struct p2p_srv_bonjour, list) {
1373                 if (len == wpabuf_len(bsrv->query) &&
1374                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1375                               len) == 0)
1376                         return bsrv;
1377         }
1378         return NULL;
1379 }
1380
1381
1382 static struct p2p_srv_upnp *
1383 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
1384                           const char *service)
1385 {
1386         struct p2p_srv_upnp *usrv;
1387
1388         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1389                          struct p2p_srv_upnp, list) {
1390                 if (version == usrv->version &&
1391                     os_strcmp(service, usrv->service) == 0)
1392                         return usrv;
1393         }
1394         return NULL;
1395 }
1396
1397
1398 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
1399                                         u8 srv_trans_id)
1400 {
1401         u8 *len_pos;
1402
1403         if (wpabuf_tailroom(resp) < 5)
1404                 return;
1405
1406         /* Length (to be filled) */
1407         len_pos = wpabuf_put(resp, 2);
1408         wpabuf_put_u8(resp, srv_proto);
1409         wpabuf_put_u8(resp, srv_trans_id);
1410         /* Status Code */
1411         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
1412         /* Response Data: empty */
1413         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1414 }
1415
1416
1417 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
1418                                 struct wpabuf *resp, u8 srv_trans_id)
1419 {
1420         struct p2p_srv_bonjour *bsrv;
1421         u8 *len_pos;
1422
1423         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
1424
1425         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1426                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1427                 return;
1428         }
1429
1430         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1431                          struct p2p_srv_bonjour, list) {
1432                 if (wpabuf_tailroom(resp) <
1433                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
1434                         return;
1435                 /* Length (to be filled) */
1436                 len_pos = wpabuf_put(resp, 2);
1437                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1438                 wpabuf_put_u8(resp, srv_trans_id);
1439                 /* Status Code */
1440                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1441                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1442                                   wpabuf_head(bsrv->resp),
1443                                   wpabuf_len(bsrv->resp));
1444                 /* Response Data */
1445                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1446                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1447                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1448                              2);
1449         }
1450 }
1451
1452
1453 static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query,
1454                                size_t query_len)
1455 {
1456         char str_rx[256], str_srv[256];
1457
1458         if (query_len < 3 || wpabuf_len(bsrv->query) < 3)
1459                 return 0; /* Too short to include DNS Type and Version */
1460         if (os_memcmp(query + query_len - 3,
1461                       wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3,
1462                       3) != 0)
1463                 return 0; /* Mismatch in DNS Type or Version */
1464         if (query_len == wpabuf_len(bsrv->query) &&
1465             os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0)
1466                 return 1; /* Binary match */
1467
1468         if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3,
1469                                   0))
1470                 return 0; /* Failed to uncompress query */
1471         if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv),
1472                                   wpabuf_head(bsrv->query),
1473                                   wpabuf_len(bsrv->query) - 3, 0))
1474                 return 0; /* Failed to uncompress service */
1475
1476         return os_strcmp(str_rx, str_srv) == 0;
1477 }
1478
1479
1480 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
1481                                 struct wpabuf *resp, u8 srv_trans_id,
1482                                 const u8 *query, size_t query_len)
1483 {
1484         struct p2p_srv_bonjour *bsrv;
1485         u8 *len_pos;
1486         int matches = 0;
1487
1488         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
1489                           query, query_len);
1490         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1491                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1492                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
1493                                             srv_trans_id);
1494                 return;
1495         }
1496
1497         if (query_len == 0) {
1498                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1499                 return;
1500         }
1501
1502         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1503                          struct p2p_srv_bonjour, list) {
1504                 if (!match_bonjour_query(bsrv, query, query_len))
1505                         continue;
1506
1507                 if (wpabuf_tailroom(resp) <
1508                     5 + query_len + wpabuf_len(bsrv->resp))
1509                         return;
1510
1511                 matches++;
1512
1513                 /* Length (to be filled) */
1514                 len_pos = wpabuf_put(resp, 2);
1515                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1516                 wpabuf_put_u8(resp, srv_trans_id);
1517
1518                 /* Status Code */
1519                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1520                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1521                                   wpabuf_head(bsrv->resp),
1522                                   wpabuf_len(bsrv->resp));
1523
1524                 /* Response Data */
1525                 wpabuf_put_data(resp, query, query_len); /* Key */
1526                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1527
1528                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1529         }
1530
1531         if (matches == 0) {
1532                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
1533                            "available");
1534                 if (wpabuf_tailroom(resp) < 5)
1535                         return;
1536
1537                 /* Length (to be filled) */
1538                 len_pos = wpabuf_put(resp, 2);
1539                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1540                 wpabuf_put_u8(resp, srv_trans_id);
1541
1542                 /* Status Code */
1543                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1544                 /* Response Data: empty */
1545                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1546                              2);
1547         }
1548 }
1549
1550
1551 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
1552                              struct wpabuf *resp, u8 srv_trans_id)
1553 {
1554         struct p2p_srv_upnp *usrv;
1555         u8 *len_pos;
1556
1557         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
1558
1559         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1560                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1561                 return;
1562         }
1563
1564         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1565                          struct p2p_srv_upnp, list) {
1566                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
1567                         return;
1568
1569                 /* Length (to be filled) */
1570                 len_pos = wpabuf_put(resp, 2);
1571                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
1572                 wpabuf_put_u8(resp, srv_trans_id);
1573
1574                 /* Status Code */
1575                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1576                 /* Response Data */
1577                 wpabuf_put_u8(resp, usrv->version);
1578                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1579                            usrv->service);
1580                 wpabuf_put_str(resp, usrv->service);
1581                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1582                              2);
1583         }
1584 }
1585
1586
1587 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
1588                              struct wpabuf *resp, u8 srv_trans_id,
1589                              const u8 *query, size_t query_len)
1590 {
1591         struct p2p_srv_upnp *usrv;
1592         u8 *len_pos;
1593         u8 version;
1594         char *str;
1595         int count = 0;
1596
1597         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
1598                           query, query_len);
1599
1600         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1601                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1602                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
1603                                             srv_trans_id);
1604                 return;
1605         }
1606
1607         if (query_len == 0) {
1608                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1609                 return;
1610         }
1611
1612         if (wpabuf_tailroom(resp) < 5)
1613                 return;
1614
1615         /* Length (to be filled) */
1616         len_pos = wpabuf_put(resp, 2);
1617         wpabuf_put_u8(resp, P2P_SERV_UPNP);
1618         wpabuf_put_u8(resp, srv_trans_id);
1619
1620         version = query[0];
1621         str = os_malloc(query_len);
1622         if (str == NULL)
1623                 return;
1624         os_memcpy(str, query + 1, query_len - 1);
1625         str[query_len - 1] = '\0';
1626
1627         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1628                          struct p2p_srv_upnp, list) {
1629                 if (version != usrv->version)
1630                         continue;
1631
1632                 if (os_strcmp(str, "ssdp:all") != 0 &&
1633                     os_strstr(usrv->service, str) == NULL)
1634                         continue;
1635
1636                 if (wpabuf_tailroom(resp) < 2)
1637                         break;
1638                 if (count == 0) {
1639                         /* Status Code */
1640                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1641                         /* Response Data */
1642                         wpabuf_put_u8(resp, version);
1643                 } else
1644                         wpabuf_put_u8(resp, ',');
1645
1646                 count++;
1647
1648                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1649                            usrv->service);
1650                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
1651                         break;
1652                 wpabuf_put_str(resp, usrv->service);
1653         }
1654         os_free(str);
1655
1656         if (count == 0) {
1657                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
1658                            "available");
1659                 /* Status Code */
1660                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1661                 /* Response Data: empty */
1662         }
1663
1664         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1665 }
1666
1667
1668 #ifdef CONFIG_WIFI_DISPLAY
1669 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
1670                             struct wpabuf *resp, u8 srv_trans_id,
1671                             const u8 *query, size_t query_len)
1672 {
1673         const u8 *pos;
1674         u8 role;
1675         u8 *len_pos;
1676
1677         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
1678
1679         if (!wpa_s->global->wifi_display) {
1680                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
1681                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
1682                                             srv_trans_id);
1683                 return;
1684         }
1685
1686         if (query_len < 1) {
1687                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
1688                            "Role");
1689                 return;
1690         }
1691
1692         if (wpabuf_tailroom(resp) < 5)
1693                 return;
1694
1695         pos = query;
1696         role = *pos++;
1697         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
1698
1699         /* TODO: role specific handling */
1700
1701         /* Length (to be filled) */
1702         len_pos = wpabuf_put(resp, 2);
1703         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
1704         wpabuf_put_u8(resp, srv_trans_id);
1705         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
1706
1707         while (pos < query + query_len) {
1708                 if (*pos < MAX_WFD_SUBELEMS &&
1709                     wpa_s->global->wfd_subelem[*pos] &&
1710                     wpabuf_tailroom(resp) >=
1711                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
1712                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
1713                                    "subelement %u", *pos);
1714                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
1715                 }
1716                 pos++;
1717         }
1718
1719         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1720 }
1721 #endif /* CONFIG_WIFI_DISPLAY */
1722
1723
1724 void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
1725                      u16 update_indic, const u8 *tlvs, size_t tlvs_len)
1726 {
1727         struct wpa_supplicant *wpa_s = ctx;
1728         const u8 *pos = tlvs;
1729         const u8 *end = tlvs + tlvs_len;
1730         const u8 *tlv_end;
1731         u16 slen;
1732         struct wpabuf *resp;
1733         u8 srv_proto, srv_trans_id;
1734         size_t buf_len;
1735         char *buf;
1736
1737         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
1738                     tlvs, tlvs_len);
1739         buf_len = 2 * tlvs_len + 1;
1740         buf = os_malloc(buf_len);
1741         if (buf) {
1742                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1743                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
1744                              MACSTR " %u %u %s",
1745                              freq, MAC2STR(sa), dialog_token, update_indic,
1746                              buf);
1747                 os_free(buf);
1748         }
1749
1750         if (wpa_s->p2p_sd_over_ctrl_iface) {
1751                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1752                                            update_indic, tlvs, tlvs_len);
1753                 return; /* to be processed by an external program */
1754         }
1755
1756         resp = wpabuf_alloc(10000);
1757         if (resp == NULL)
1758                 return;
1759
1760         while (pos + 1 < end) {
1761                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
1762                 slen = WPA_GET_LE16(pos);
1763                 pos += 2;
1764                 if (pos + slen > end || slen < 2) {
1765                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
1766                                    "length");
1767                         wpabuf_free(resp);
1768                         return;
1769                 }
1770                 tlv_end = pos + slen;
1771
1772                 srv_proto = *pos++;
1773                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1774                            srv_proto);
1775                 srv_trans_id = *pos++;
1776                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1777                            srv_trans_id);
1778
1779                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
1780                             pos, tlv_end - pos);
1781
1782
1783                 if (wpa_s->force_long_sd) {
1784                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
1785                                    "response");
1786                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1787                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1788                         goto done;
1789                 }
1790
1791                 switch (srv_proto) {
1792                 case P2P_SERV_ALL_SERVICES:
1793                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
1794                                    "for all services");
1795                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
1796                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1797                                 wpa_printf(MSG_DEBUG, "P2P: No service "
1798                                            "discovery protocols available");
1799                                 wpas_sd_add_proto_not_avail(
1800                                         resp, P2P_SERV_ALL_SERVICES,
1801                                         srv_trans_id);
1802                                 break;
1803                         }
1804                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1805                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1806                         break;
1807                 case P2P_SERV_BONJOUR:
1808                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
1809                                             pos, tlv_end - pos);
1810                         break;
1811                 case P2P_SERV_UPNP:
1812                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
1813                                          pos, tlv_end - pos);
1814                         break;
1815 #ifdef CONFIG_WIFI_DISPLAY
1816                 case P2P_SERV_WIFI_DISPLAY:
1817                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
1818                                         pos, tlv_end - pos);
1819                         break;
1820 #endif /* CONFIG_WIFI_DISPLAY */
1821                 default:
1822                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
1823                                    "protocol %u", srv_proto);
1824                         wpas_sd_add_proto_not_avail(resp, srv_proto,
1825                                                     srv_trans_id);
1826                         break;
1827                 }
1828
1829                 pos = tlv_end;
1830         }
1831
1832 done:
1833         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1834                                    update_indic, tlvs, tlvs_len);
1835
1836         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
1837
1838         wpabuf_free(resp);
1839 }
1840
1841
1842 void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
1843                       const u8 *tlvs, size_t tlvs_len)
1844 {
1845         struct wpa_supplicant *wpa_s = ctx;
1846         const u8 *pos = tlvs;
1847         const u8 *end = tlvs + tlvs_len;
1848         const u8 *tlv_end;
1849         u16 slen;
1850         size_t buf_len;
1851         char *buf;
1852
1853         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
1854                     tlvs, tlvs_len);
1855         if (tlvs_len > 1500) {
1856                 /* TODO: better way for handling this */
1857                 wpa_msg_ctrl(wpa_s, MSG_INFO,
1858                              P2P_EVENT_SERV_DISC_RESP MACSTR
1859                              " %u <long response: %u bytes>",
1860                              MAC2STR(sa), update_indic,
1861                              (unsigned int) tlvs_len);
1862         } else {
1863                 buf_len = 2 * tlvs_len + 1;
1864                 buf = os_malloc(buf_len);
1865                 if (buf) {
1866                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1867                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1868                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
1869                                      MAC2STR(sa), update_indic, buf);
1870                         os_free(buf);
1871                 }
1872         }
1873
1874         while (pos < end) {
1875                 u8 srv_proto, srv_trans_id, status;
1876
1877                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
1878                 slen = WPA_GET_LE16(pos);
1879                 pos += 2;
1880                 if (pos + slen > end || slen < 3) {
1881                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
1882                                    "length");
1883                         return;
1884                 }
1885                 tlv_end = pos + slen;
1886
1887                 srv_proto = *pos++;
1888                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1889                            srv_proto);
1890                 srv_trans_id = *pos++;
1891                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1892                            srv_trans_id);
1893                 status = *pos++;
1894                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
1895                            status);
1896
1897                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
1898                             pos, tlv_end - pos);
1899
1900                 pos = tlv_end;
1901         }
1902
1903         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
1904 }
1905
1906
1907 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
1908                         const struct wpabuf *tlvs)
1909 {
1910         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1911                 return wpa_drv_p2p_sd_request(wpa_s, dst, tlvs);
1912         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1913                 return 0;
1914         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
1915 }
1916
1917
1918 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
1919                              u8 version, const char *query)
1920 {
1921         struct wpabuf *tlvs;
1922         u64 ret;
1923
1924         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
1925         if (tlvs == NULL)
1926                 return 0;
1927         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
1928         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
1929         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
1930         wpabuf_put_u8(tlvs, version);
1931         wpabuf_put_str(tlvs, query);
1932         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
1933         wpabuf_free(tlvs);
1934         return ret;
1935 }
1936
1937
1938 #ifdef CONFIG_WIFI_DISPLAY
1939
1940 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
1941                                    const struct wpabuf *tlvs)
1942 {
1943         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1944                 return 0;
1945         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1946                 return 0;
1947         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
1948 }
1949
1950
1951 #define MAX_WFD_SD_SUBELEMS 20
1952
1953 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
1954                                 const char *subelems)
1955 {
1956         u8 *len;
1957         const char *pos;
1958         int val;
1959         int count = 0;
1960
1961         len = wpabuf_put(tlvs, 2);
1962         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
1963         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
1964
1965         wpabuf_put_u8(tlvs, role);
1966
1967         pos = subelems;
1968         while (*pos) {
1969                 val = atoi(pos);
1970                 if (val >= 0 && val < 256) {
1971                         wpabuf_put_u8(tlvs, val);
1972                         count++;
1973                         if (count == MAX_WFD_SD_SUBELEMS)
1974                                 break;
1975                 }
1976                 pos = os_strchr(pos + 1, ',');
1977                 if (pos == NULL)
1978                         break;
1979                 pos++;
1980         }
1981
1982         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
1983 }
1984
1985
1986 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
1987                                      const u8 *dst, const char *role)
1988 {
1989         struct wpabuf *tlvs;
1990         u64 ret;
1991         const char *subelems;
1992         u8 id = 1;
1993
1994         subelems = os_strchr(role, ' ');
1995         if (subelems == NULL)
1996                 return 0;
1997         subelems++;
1998
1999         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
2000         if (tlvs == NULL)
2001                 return 0;
2002
2003         if (os_strstr(role, "[source]"))
2004                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
2005         if (os_strstr(role, "[pri-sink]"))
2006                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
2007         if (os_strstr(role, "[sec-sink]"))
2008                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
2009         if (os_strstr(role, "[source+sink]"))
2010                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
2011
2012         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
2013         wpabuf_free(tlvs);
2014         return ret;
2015 }
2016
2017 #endif /* CONFIG_WIFI_DISPLAY */
2018
2019
2020 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
2021 {
2022         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
2023                 return wpa_drv_p2p_sd_cancel_request(wpa_s, req);
2024         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2025                 return -1;
2026         return p2p_sd_cancel_request(wpa_s->global->p2p,
2027                                      (void *) (uintptr_t) req);
2028 }
2029
2030
2031 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
2032                           const u8 *dst, u8 dialog_token,
2033                           const struct wpabuf *resp_tlvs)
2034 {
2035         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2036                 wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token,
2037                                         resp_tlvs);
2038                 return;
2039         }
2040         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2041                 return;
2042         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
2043                         resp_tlvs);
2044 }
2045
2046
2047 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
2048 {
2049         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2050                 wpa_drv_p2p_service_update(wpa_s);
2051                 return;
2052         }
2053         if (wpa_s->global->p2p)
2054                 p2p_sd_service_update(wpa_s->global->p2p);
2055 }
2056
2057
2058 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
2059 {
2060         dl_list_del(&bsrv->list);
2061         wpabuf_free(bsrv->query);
2062         wpabuf_free(bsrv->resp);
2063         os_free(bsrv);
2064 }
2065
2066
2067 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
2068 {
2069         dl_list_del(&usrv->list);
2070         os_free(usrv->service);
2071         os_free(usrv);
2072 }
2073
2074
2075 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
2076 {
2077         struct p2p_srv_bonjour *bsrv, *bn;
2078         struct p2p_srv_upnp *usrv, *un;
2079
2080         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
2081                               struct p2p_srv_bonjour, list)
2082                 wpas_p2p_srv_bonjour_free(bsrv);
2083
2084         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
2085                               struct p2p_srv_upnp, list)
2086                 wpas_p2p_srv_upnp_free(usrv);
2087
2088         wpas_p2p_sd_service_update(wpa_s);
2089 }
2090
2091
2092 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
2093                                  struct wpabuf *query, struct wpabuf *resp)
2094 {
2095         struct p2p_srv_bonjour *bsrv;
2096
2097         bsrv = os_zalloc(sizeof(*bsrv));
2098         if (bsrv == NULL)
2099                 return -1;
2100         bsrv->query = query;
2101         bsrv->resp = resp;
2102         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
2103
2104         wpas_p2p_sd_service_update(wpa_s);
2105         return 0;
2106 }
2107
2108
2109 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
2110                                  const struct wpabuf *query)
2111 {
2112         struct p2p_srv_bonjour *bsrv;
2113
2114         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
2115         if (bsrv == NULL)
2116                 return -1;
2117         wpas_p2p_srv_bonjour_free(bsrv);
2118         wpas_p2p_sd_service_update(wpa_s);
2119         return 0;
2120 }
2121
2122
2123 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2124                               const char *service)
2125 {
2126         struct p2p_srv_upnp *usrv;
2127
2128         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2129                 return 0; /* Already listed */
2130         usrv = os_zalloc(sizeof(*usrv));
2131         if (usrv == NULL)
2132                 return -1;
2133         usrv->version = version;
2134         usrv->service = os_strdup(service);
2135         if (usrv->service == NULL) {
2136                 os_free(usrv);
2137                 return -1;
2138         }
2139         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2140
2141         wpas_p2p_sd_service_update(wpa_s);
2142         return 0;
2143 }
2144
2145
2146 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2147                               const char *service)
2148 {
2149         struct p2p_srv_upnp *usrv;
2150
2151         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2152         if (usrv == NULL)
2153                 return -1;
2154         wpas_p2p_srv_upnp_free(usrv);
2155         wpas_p2p_sd_service_update(wpa_s);
2156         return 0;
2157 }
2158
2159
2160 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2161                                          const u8 *peer, const char *params,
2162                                          unsigned int generated_pin)
2163 {
2164         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s",
2165                 MAC2STR(peer), generated_pin, params);
2166 }
2167
2168
2169 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2170                                         const u8 *peer, const char *params)
2171 {
2172         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s",
2173                 MAC2STR(peer), params);
2174 }
2175
2176
2177 void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2178                         const u8 *dev_addr, const u8 *pri_dev_type,
2179                         const char *dev_name, u16 supp_config_methods,
2180                         u8 dev_capab, u8 group_capab, const u8 *group_id,
2181                         size_t group_id_len)
2182 {
2183         struct wpa_supplicant *wpa_s = ctx;
2184         char devtype[WPS_DEV_TYPE_BUFSIZE];
2185         char params[300];
2186         u8 empty_dev_type[8];
2187         unsigned int generated_pin = 0;
2188         struct wpa_supplicant *group = NULL;
2189
2190         if (group_id) {
2191                 for (group = wpa_s->global->ifaces; group; group = group->next)
2192                 {
2193                         struct wpa_ssid *s = group->current_ssid;
2194                         if (s != NULL &&
2195                             s->mode == WPAS_MODE_P2P_GO &&
2196                             group_id_len - ETH_ALEN == s->ssid_len &&
2197                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2198                                       s->ssid_len) == 0)
2199                                 break;
2200                 }
2201         }
2202
2203         if (pri_dev_type == NULL) {
2204                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2205                 pri_dev_type = empty_dev_type;
2206         }
2207         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2208                     " pri_dev_type=%s name='%s' config_methods=0x%x "
2209                     "dev_capab=0x%x group_capab=0x%x%s%s",
2210                     MAC2STR(dev_addr),
2211                     wps_dev_type_bin2str(pri_dev_type, devtype,
2212                                          sizeof(devtype)),
2213                     dev_name, supp_config_methods, dev_capab, group_capab,
2214                     group ? " group=" : "",
2215                     group ? group->ifname : "");
2216         params[sizeof(params) - 1] = '\0';
2217
2218         if (config_methods & WPS_CONFIG_DISPLAY) {
2219                 generated_pin = wps_generate_pin();
2220                 wpas_prov_disc_local_display(wpa_s, peer, params,
2221                                              generated_pin);
2222         } else if (config_methods & WPS_CONFIG_KEYPAD)
2223                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2224         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2225                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR
2226                         "%s", MAC2STR(peer), params);
2227
2228         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2229                                             P2P_PROV_DISC_SUCCESS,
2230                                             config_methods, generated_pin);
2231 }
2232
2233
2234 void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2235 {
2236         struct wpa_supplicant *wpa_s = ctx;
2237         unsigned int generated_pin = 0;
2238         char params[20];
2239
2240         if (wpa_s->pending_pd_before_join &&
2241             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2242              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2243                 wpa_s->pending_pd_before_join = 0;
2244                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2245                            "join-existing-group operation");
2246                 wpas_p2p_join_start(wpa_s);
2247                 return;
2248         }
2249
2250         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2251             wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2252                 os_snprintf(params, sizeof(params), " peer_go=%d",
2253                             wpa_s->pending_pd_use == AUTO_PD_JOIN);
2254         else
2255                 params[0] = '\0';
2256
2257         if (config_methods & WPS_CONFIG_DISPLAY)
2258                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2259         else if (config_methods & WPS_CONFIG_KEYPAD) {
2260                 generated_pin = wps_generate_pin();
2261                 wpas_prov_disc_local_display(wpa_s, peer, params,
2262                                              generated_pin);
2263         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2264                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR
2265                         "%s", MAC2STR(peer), params);
2266
2267         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2268                                             P2P_PROV_DISC_SUCCESS,
2269                                             config_methods, generated_pin);
2270 }
2271
2272
2273 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2274                                 enum p2p_prov_disc_status status)
2275 {
2276         struct wpa_supplicant *wpa_s = ctx;
2277
2278         if (wpa_s->p2p_fallback_to_go_neg) {
2279                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2280                         "failed - fall back to GO Negotiation");
2281                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2282                 return;
2283         }
2284
2285         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2286                 wpa_s->pending_pd_before_join = 0;
2287                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2288                            "join-existing-group operation (no ACK for PD "
2289                            "Req attempts)");
2290                 wpas_p2p_join_start(wpa_s);
2291                 return;
2292         }
2293
2294         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2295                 " p2p_dev_addr=" MACSTR " status=%d",
2296                 MAC2STR(peer), status);
2297
2298         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2299                                             status, 0, 0);
2300 }
2301
2302
2303 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2304                                   const u8 *go_dev_addr, const u8 *ssid,
2305                                   size_t ssid_len, int *go, u8 *group_bssid,
2306                                   int *force_freq, int persistent_group)
2307 {
2308         struct wpa_supplicant *wpa_s = ctx;
2309         struct wpa_ssid *s;
2310         u8 cur_bssid[ETH_ALEN];
2311         int res;
2312         struct wpa_supplicant *grp;
2313
2314         if (!persistent_group) {
2315                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2316                            " to join an active group", MAC2STR(sa));
2317                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2318                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2319                      == 0 ||
2320                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2321                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2322                                    "authorized invitation");
2323                         goto accept_inv;
2324                 }
2325                 /*
2326                  * Do not accept the invitation automatically; notify user and
2327                  * request approval.
2328                  */
2329                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2330         }
2331
2332         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2333         if (grp) {
2334                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2335                            "running persistent group");
2336                 if (*go)
2337                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2338                 goto accept_inv;
2339         }
2340
2341         if (!wpa_s->conf->persistent_reconnect)
2342                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2343
2344         for (s = wpa_s->conf->ssid; s; s = s->next) {
2345                 if (s->disabled == 2 &&
2346                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2347                     s->ssid_len == ssid_len &&
2348                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2349                         break;
2350         }
2351
2352         if (!s) {
2353                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2354                            " requested reinvocation of an unknown group",
2355                            MAC2STR(sa));
2356                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2357         }
2358
2359         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2360                 *go = 1;
2361                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2362                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2363                                    "interface is already in use - reject "
2364                                    "invitation");
2365                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2366                 }
2367                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2368         } else if (s->mode == WPAS_MODE_P2P_GO) {
2369                 *go = 1;
2370                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2371                 {
2372                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2373                                    "interface address for the group");
2374                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2375                 }
2376                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2377                           ETH_ALEN);
2378         }
2379
2380 accept_inv:
2381         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 &&
2382             wpa_s->assoc_freq) {
2383                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2384                            "the channel we are already using");
2385                 *force_freq = wpa_s->assoc_freq;
2386         }
2387
2388         res = wpa_drv_shared_freq(wpa_s);
2389         if (res > 0) {
2390                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2391                            "with the channel we are already using on a "
2392                            "shared interface");
2393                 *force_freq = res;
2394         }
2395
2396         return P2P_SC_SUCCESS;
2397 }
2398
2399
2400 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2401                                      const u8 *ssid, size_t ssid_len,
2402                                      const u8 *go_dev_addr, u8 status,
2403                                      int op_freq)
2404 {
2405         struct wpa_supplicant *wpa_s = ctx;
2406         struct wpa_ssid *s;
2407
2408         for (s = wpa_s->conf->ssid; s; s = s->next) {
2409                 if (s->disabled == 2 &&
2410                     s->ssid_len == ssid_len &&
2411                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2412                         break;
2413         }
2414
2415         if (status == P2P_SC_SUCCESS) {
2416                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2417                            " was accepted; op_freq=%d MHz",
2418                            MAC2STR(sa), op_freq);
2419                 if (s) {
2420                         int go = s->mode == WPAS_MODE_P2P_GO;
2421                         wpas_p2p_group_add_persistent(
2422                                 wpa_s, s, go, go ? op_freq : 0, 0);
2423                 } else if (bssid) {
2424                         wpa_s->user_initiated_pd = 0;
2425                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2426                                       wpa_s->p2p_wps_method, 0);
2427                 }
2428                 return;
2429         }
2430
2431         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2432                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2433                            " was rejected (status %u)", MAC2STR(sa), status);
2434                 return;
2435         }
2436
2437         if (!s) {
2438                 if (bssid) {
2439                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2440                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2441                                 " bssid=" MACSTR " unknown-network",
2442                                 MAC2STR(sa), MAC2STR(go_dev_addr),
2443                                 MAC2STR(bssid));
2444                 } else {
2445                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2446                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2447                                 " unknown-network",
2448                                 MAC2STR(sa), MAC2STR(go_dev_addr));
2449                 }
2450                 return;
2451         }
2452
2453         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR
2454                 " persistent=%d", MAC2STR(sa), s->id);
2455 }
2456
2457
2458 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid)
2459 {
2460         struct wpa_supplicant *wpa_s = ctx;
2461         struct wpa_ssid *ssid;
2462
2463         if (bssid) {
2464                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2465                         "status=%d " MACSTR,
2466                         status, MAC2STR(bssid));
2467         } else {
2468                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2469                         "status=%d ", status);
2470         }
2471         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2472
2473         if (wpa_s->pending_invite_ssid_id == -1)
2474                 return; /* Invitation to active group */
2475
2476         if (status != P2P_SC_SUCCESS) {
2477                 wpas_p2p_remove_pending_group_interface(wpa_s);
2478                 return;
2479         }
2480
2481         ssid = wpa_config_get_network(wpa_s->conf,
2482                                       wpa_s->pending_invite_ssid_id);
2483         if (ssid == NULL) {
2484                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2485                            "data matching with invitation");
2486                 return;
2487         }
2488
2489         /*
2490          * The peer could have missed our ctrl::ack frame for Invitation
2491          * Response and continue retransmitting the frame. To reduce the
2492          * likelihood of the peer not getting successful TX status for the
2493          * Invitation Response frame, wait a short time here before starting
2494          * the persistent group so that we will remain on the current channel to
2495          * acknowledge any possible retransmission from the peer.
2496          */
2497         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
2498                 "starting persistent group");
2499         os_sleep(0, 50000);
2500
2501         wpas_p2p_group_add_persistent(wpa_s, ssid,
2502                                       ssid->mode == WPAS_MODE_P2P_GO,
2503                                       wpa_s->p2p_persistent_go_freq,
2504                                       wpa_s->p2p_go_ht40);
2505 }
2506
2507
2508 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
2509                                     unsigned int freq)
2510 {
2511         unsigned int i;
2512
2513         if (global->p2p_disallow_freq == NULL)
2514                 return 0;
2515
2516         for (i = 0; i < global->num_p2p_disallow_freq; i++) {
2517                 if (freq >= global->p2p_disallow_freq[i].min &&
2518                     freq <= global->p2p_disallow_freq[i].max)
2519                         return 1;
2520         }
2521
2522         return 0;
2523 }
2524
2525
2526 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
2527 {
2528         reg->channel[reg->channels] = chan;
2529         reg->channels++;
2530 }
2531
2532
2533 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
2534                                      struct p2p_channels *chan)
2535 {
2536         int i, cla = 0;
2537
2538         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
2539                    "band");
2540
2541         /* Operating class 81 - 2.4 GHz band channels 1..13 */
2542         chan->reg_class[cla].reg_class = 81;
2543         chan->reg_class[cla].channels = 0;
2544         for (i = 0; i < 11; i++) {
2545                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
2546                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
2547         }
2548         if (chan->reg_class[cla].channels)
2549                 cla++;
2550
2551         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
2552                    "band");
2553
2554         /* Operating class 115 - 5 GHz, channels 36-48 */
2555         chan->reg_class[cla].reg_class = 115;
2556         chan->reg_class[cla].channels = 0;
2557         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
2558                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
2559         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
2560                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
2561         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
2562                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
2563         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
2564                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
2565         if (chan->reg_class[cla].channels)
2566                 cla++;
2567
2568         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
2569                    "band");
2570
2571         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
2572         chan->reg_class[cla].reg_class = 124;
2573         chan->reg_class[cla].channels = 0;
2574         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
2575                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
2576         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
2577                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
2578         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
2579                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
2580         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
2581                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
2582         if (chan->reg_class[cla].channels)
2583                 cla++;
2584
2585         chan->reg_classes = cla;
2586         return 0;
2587 }
2588
2589
2590 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
2591                                           u16 num_modes,
2592                                           enum hostapd_hw_mode mode)
2593 {
2594         u16 i;
2595
2596         for (i = 0; i < num_modes; i++) {
2597                 if (modes[i].mode == mode)
2598                         return &modes[i];
2599         }
2600
2601         return NULL;
2602 }
2603
2604
2605 static int has_channel(struct wpa_global *global,
2606                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
2607 {
2608         int i;
2609         unsigned int freq;
2610
2611         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
2612                 chan * 5;
2613         if (wpas_p2p_disallowed_freq(global, freq))
2614                 return 0;
2615
2616         for (i = 0; i < mode->num_channels; i++) {
2617                 if (mode->channels[i].chan == chan) {
2618                         if (flags)
2619                                 *flags = mode->channels[i].flag;
2620                         return !(mode->channels[i].flag &
2621                                  (HOSTAPD_CHAN_DISABLED |
2622                                   HOSTAPD_CHAN_PASSIVE_SCAN |
2623                                   HOSTAPD_CHAN_NO_IBSS |
2624                                   HOSTAPD_CHAN_RADAR));
2625                 }
2626         }
2627
2628         return 0;
2629 }
2630
2631
2632 struct p2p_oper_class_map {
2633         enum hostapd_hw_mode mode;
2634         u8 op_class;
2635         u8 min_chan;
2636         u8 max_chan;
2637         u8 inc;
2638         enum { BW20, BW40PLUS, BW40MINUS } bw;
2639 };
2640
2641 static struct p2p_oper_class_map op_class[] = {
2642         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
2643 #if 0 /* Do not enable HT40 on 2 GHz for now */
2644         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
2645         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
2646 #endif
2647         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
2648         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
2649         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
2650         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
2651         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
2652         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
2653         { -1, 0, 0, 0, 0, BW20 }
2654 };
2655
2656
2657 static int wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
2658                                    struct hostapd_hw_modes *mode,
2659                                    u8 channel, u8 bw)
2660 {
2661         int flag;
2662
2663         if (!has_channel(wpa_s->global, mode, channel, &flag))
2664                 return -1;
2665         if (bw == BW40MINUS &&
2666             (!(flag & HOSTAPD_CHAN_HT40MINUS) ||
2667              !has_channel(wpa_s->global, mode, channel - 4, NULL)))
2668                 return 0;
2669         if (bw == BW40PLUS &&
2670             (!(flag & HOSTAPD_CHAN_HT40PLUS) ||
2671              !has_channel(wpa_s->global, mode, channel + 4, NULL)))
2672                 return 0;
2673         return 1;
2674 }
2675
2676
2677 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
2678                                    struct p2p_channels *chan)
2679 {
2680         struct hostapd_hw_modes *mode;
2681         int cla, op;
2682
2683         if (wpa_s->hw.modes == NULL) {
2684                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
2685                            "of all supported channels; assume dualband "
2686                            "support");
2687                 return wpas_p2p_default_channels(wpa_s, chan);
2688         }
2689
2690         cla = 0;
2691
2692         for (op = 0; op_class[op].op_class; op++) {
2693                 struct p2p_oper_class_map *o = &op_class[op];
2694                 u8 ch;
2695                 struct p2p_reg_class *reg = NULL;
2696
2697                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
2698                 if (mode == NULL)
2699                         continue;
2700                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2701                         if (wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw) < 1)
2702                                 continue;
2703                         if (reg == NULL) {
2704                                 wpa_printf(MSG_DEBUG, "P2P: Add operating "
2705                                            "class %u", o->op_class);
2706                                 reg = &chan->reg_class[cla];
2707                                 cla++;
2708                                 reg->reg_class = o->op_class;
2709                         }
2710                         reg->channel[reg->channels] = ch;
2711                         reg->channels++;
2712                 }
2713                 if (reg) {
2714                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
2715                                     reg->channel, reg->channels);
2716                 }
2717         }
2718
2719         chan->reg_classes = cla;
2720
2721         return 0;
2722 }
2723
2724
2725 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
2726                            struct hostapd_hw_modes *mode, u8 channel)
2727 {
2728         int op, ret;
2729
2730         for (op = 0; op_class[op].op_class; op++) {
2731                 struct p2p_oper_class_map *o = &op_class[op];
2732                 u8 ch;
2733
2734                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2735                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
2736                             o->bw == BW20 || ch != channel)
2737                                 continue;
2738                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
2739                         if (ret < 0)
2740                                 continue;
2741                         else if (ret > 0)
2742                                 return (o->bw == BW40MINUS) ? -1 : 1;
2743                         else
2744                                 return 0;
2745                 }
2746         }
2747         return 0;
2748 }
2749
2750
2751 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
2752                         size_t buf_len)
2753 {
2754         struct wpa_supplicant *wpa_s = ctx;
2755
2756         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2757                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
2758                         break;
2759         }
2760         if (wpa_s == NULL)
2761                 return -1;
2762
2763         return wpa_drv_get_noa(wpa_s, buf, buf_len);
2764 }
2765
2766
2767 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
2768 {
2769         struct wpa_supplicant *wpa_s = ctx;
2770
2771         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2772                 struct wpa_ssid *ssid = wpa_s->current_ssid;
2773                 if (ssid == NULL)
2774                         continue;
2775                 if (ssid->mode != WPAS_MODE_INFRA)
2776                         continue;
2777                 if (wpa_s->wpa_state != WPA_COMPLETED &&
2778                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
2779                         continue;
2780                 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
2781                         return 1;
2782         }
2783
2784         return 0;
2785 }
2786
2787
2788 /**
2789  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
2790  * @global: Pointer to global data from wpa_supplicant_init()
2791  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2792  * Returns: 0 on success, -1 on failure
2793  */
2794 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
2795 {
2796         struct p2p_config p2p;
2797         unsigned int r;
2798         int i;
2799
2800         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
2801                 return 0;
2802
2803         if (global->p2p)
2804                 return 0;
2805
2806         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2807                 struct p2p_params params;
2808
2809                 wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management");
2810                 os_memset(&params, 0, sizeof(params));
2811                 params.dev_name = wpa_s->conf->device_name;
2812                 os_memcpy(params.pri_dev_type, wpa_s->conf->device_type,
2813                           WPS_DEV_TYPE_LEN);
2814                 params.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2815                 os_memcpy(params.sec_dev_type,
2816                           wpa_s->conf->sec_device_type,
2817                           params.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2818
2819                 if (wpa_drv_p2p_set_params(wpa_s, &params) < 0)
2820                         return -1;
2821
2822                 return 0;
2823         }
2824
2825         os_memset(&p2p, 0, sizeof(p2p));
2826         p2p.msg_ctx = wpa_s;
2827         p2p.cb_ctx = wpa_s;
2828         p2p.p2p_scan = wpas_p2p_scan;
2829         p2p.send_action = wpas_send_action;
2830         p2p.send_action_done = wpas_send_action_done;
2831         p2p.go_neg_completed = wpas_go_neg_completed;
2832         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
2833         p2p.dev_found = wpas_dev_found;
2834         p2p.dev_lost = wpas_dev_lost;
2835         p2p.start_listen = wpas_start_listen;
2836         p2p.stop_listen = wpas_stop_listen;
2837         p2p.send_probe_resp = wpas_send_probe_resp;
2838         p2p.sd_request = wpas_sd_request;
2839         p2p.sd_response = wpas_sd_response;
2840         p2p.prov_disc_req = wpas_prov_disc_req;
2841         p2p.prov_disc_resp = wpas_prov_disc_resp;
2842         p2p.prov_disc_fail = wpas_prov_disc_fail;
2843         p2p.invitation_process = wpas_invitation_process;
2844         p2p.invitation_received = wpas_invitation_received;
2845         p2p.invitation_result = wpas_invitation_result;
2846         p2p.get_noa = wpas_get_noa;
2847         p2p.go_connected = wpas_go_connected;
2848
2849         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
2850         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
2851         p2p.dev_name = wpa_s->conf->device_name;
2852         p2p.manufacturer = wpa_s->conf->manufacturer;
2853         p2p.model_name = wpa_s->conf->model_name;
2854         p2p.model_number = wpa_s->conf->model_number;
2855         p2p.serial_number = wpa_s->conf->serial_number;
2856         if (wpa_s->wps) {
2857                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
2858                 p2p.config_methods = wpa_s->wps->config_methods;
2859         }
2860
2861         if (wpa_s->conf->p2p_listen_reg_class &&
2862             wpa_s->conf->p2p_listen_channel) {
2863                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
2864                 p2p.channel = wpa_s->conf->p2p_listen_channel;
2865         } else {
2866                 p2p.reg_class = 81;
2867                 /*
2868                  * Pick one of the social channels randomly as the listen
2869                  * channel.
2870                  */
2871                 os_get_random((u8 *) &r, sizeof(r));
2872                 p2p.channel = 1 + (r % 3) * 5;
2873         }
2874         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
2875
2876         if (wpa_s->conf->p2p_oper_reg_class &&
2877             wpa_s->conf->p2p_oper_channel) {
2878                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
2879                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
2880                 p2p.cfg_op_channel = 1;
2881                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
2882                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2883
2884         } else {
2885                 p2p.op_reg_class = 81;
2886                 /*
2887                  * Use random operation channel from (1, 6, 11) if no other
2888                  * preference is indicated.
2889                  */
2890                 os_get_random((u8 *) &r, sizeof(r));
2891                 p2p.op_channel = 1 + (r % 3) * 5;
2892                 p2p.cfg_op_channel = 0;
2893                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
2894                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2895         }
2896         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
2897                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
2898                 p2p.country[2] = 0x04;
2899         } else
2900                 os_memcpy(p2p.country, "XX\x04", 3);
2901
2902         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) {
2903                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
2904                            "channel list");
2905                 return -1;
2906         }
2907
2908         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
2909                   WPS_DEV_TYPE_LEN);
2910
2911         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2912         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
2913                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2914
2915         p2p.concurrent_operations = !!(wpa_s->drv_flags &
2916                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
2917
2918         p2p.max_peers = 100;
2919
2920         if (wpa_s->conf->p2p_ssid_postfix) {
2921                 p2p.ssid_postfix_len =
2922                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
2923                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
2924                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
2925                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
2926                           p2p.ssid_postfix_len);
2927         }
2928
2929         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
2930
2931         p2p.max_listen = wpa_s->max_remain_on_chan;
2932
2933         global->p2p = p2p_init(&p2p);
2934         if (global->p2p == NULL)
2935                 return -1;
2936         global->p2p_init_wpa_s = wpa_s;
2937
2938         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
2939                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
2940                         continue;
2941                 p2p_add_wps_vendor_extension(
2942                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
2943         }
2944
2945         return 0;
2946 }
2947
2948
2949 /**
2950  * wpas_p2p_deinit - Deinitialize per-interface P2P data
2951  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2952  *
2953  * This function deinitialize per-interface P2P data.
2954  */
2955 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
2956 {
2957         if (wpa_s->driver && wpa_s->drv_priv)
2958                 wpa_drv_probe_req_report(wpa_s, 0);
2959
2960         if (wpa_s->go_params) {
2961                 /* Clear any stored provisioning info */
2962                 p2p_clear_provisioning_info(
2963                         wpa_s->global->p2p,
2964                         wpa_s->go_params->peer_device_addr);
2965         }
2966
2967         os_free(wpa_s->go_params);
2968         wpa_s->go_params = NULL;
2969         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2970         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2971         wpa_s->p2p_long_listen = 0;
2972         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2973         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
2974         wpas_p2p_remove_pending_group_interface(wpa_s);
2975
2976         /* TODO: remove group interface from the driver if this wpa_s instance
2977          * is on top of a P2P group interface */
2978 }
2979
2980
2981 /**
2982  * wpas_p2p_deinit_global - Deinitialize global P2P module
2983  * @global: Pointer to global data from wpa_supplicant_init()
2984  *
2985  * This function deinitializes the global (per device) P2P module.
2986  */
2987 void wpas_p2p_deinit_global(struct wpa_global *global)
2988 {
2989         struct wpa_supplicant *wpa_s, *tmp;
2990
2991         wpa_s = global->ifaces;
2992         if (wpa_s)
2993                 wpas_p2p_service_flush(wpa_s);
2994
2995         if (global->p2p == NULL)
2996                 return;
2997
2998         /* Remove remaining P2P group interfaces */
2999         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
3000                 wpa_s = wpa_s->next;
3001         while (wpa_s) {
3002                 tmp = global->ifaces;
3003                 while (tmp &&
3004                        (tmp == wpa_s ||
3005                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
3006                         tmp = tmp->next;
3007                 }
3008                 if (tmp == NULL)
3009                         break;
3010                 /* Disconnect from the P2P group and deinit the interface */
3011                 wpas_p2p_disconnect(tmp);
3012         }
3013
3014         /*
3015          * Deinit GO data on any possibly remaining interface (if main
3016          * interface is used as GO).
3017          */
3018         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3019                 if (wpa_s->ap_iface)
3020                         wpas_p2p_group_deinit(wpa_s);
3021         }
3022
3023         p2p_deinit(global->p2p);
3024         global->p2p = NULL;
3025         global->p2p_init_wpa_s = NULL;
3026 }
3027
3028
3029 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
3030 {
3031         if (wpa_s->conf->p2p_no_group_iface)
3032                 return 0; /* separate interface disabled per configuration */
3033         if (wpa_s->drv_flags &
3034             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
3035              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
3036                 return 1; /* P2P group requires a new interface in every case
3037                            */
3038         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
3039                 return 0; /* driver does not support concurrent operations */
3040         if (wpa_s->global->ifaces->next)
3041                 return 1; /* more that one interface already in use */
3042         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
3043                 return 1; /* this interface is already in use */
3044         return 0;
3045 }
3046
3047
3048 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
3049                                  const u8 *peer_addr,
3050                                  enum p2p_wps_method wps_method,
3051                                  int go_intent, const u8 *own_interface_addr,
3052                                  unsigned int force_freq, int persistent_group,
3053                                  struct wpa_ssid *ssid, unsigned int pref_freq)
3054 {
3055         if (persistent_group && wpa_s->conf->persistent_reconnect)
3056                 persistent_group = 2;
3057
3058         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
3059                 return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method,
3060                                            go_intent, own_interface_addr,
3061                                            force_freq, persistent_group);
3062         }
3063
3064         /*
3065          * Increase GO config timeout if HT40 is used since it takes some time
3066          * to scan channels for coex purposes before the BSS can be started.
3067          */
3068         p2p_set_config_timeout(wpa_s->global->p2p,
3069                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
3070
3071         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
3072                            go_intent, own_interface_addr, force_freq,
3073                            persistent_group, ssid ? ssid->ssid : NULL,
3074                            ssid ? ssid->ssid_len : 0,
3075                            wpa_s->p2p_pd_before_go_neg, pref_freq);
3076 }
3077
3078
3079 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
3080                                 const u8 *peer_addr,
3081                                 enum p2p_wps_method wps_method,
3082                                 int go_intent, const u8 *own_interface_addr,
3083                                 unsigned int force_freq, int persistent_group,
3084                                 struct wpa_ssid *ssid, unsigned int pref_freq)
3085 {
3086         if (persistent_group && wpa_s->conf->persistent_reconnect)
3087                 persistent_group = 2;
3088
3089         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3090                 return -1;
3091
3092         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
3093                              go_intent, own_interface_addr, force_freq,
3094                              persistent_group, ssid ? ssid->ssid : NULL,
3095                              ssid ? ssid->ssid_len : 0, pref_freq);
3096 }
3097
3098
3099 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
3100 {
3101         wpa_s->p2p_join_scan_count++;
3102         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
3103                    wpa_s->p2p_join_scan_count);
3104         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
3105                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
3106                            " for join operationg - stop join attempt",
3107                            MAC2STR(wpa_s->pending_join_iface_addr));
3108                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3109                 if (wpa_s->p2p_auto_pd) {
3110                         wpa_s->p2p_auto_pd = 0;
3111                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3112                                 " p2p_dev_addr=" MACSTR " status=N/A",
3113                                 MAC2STR(wpa_s->pending_join_dev_addr));
3114                         return;
3115                 }
3116                 wpa_msg(wpa_s->parent, MSG_INFO,
3117                         P2P_EVENT_GROUP_FORMATION_FAILURE);
3118         }
3119 }
3120
3121
3122 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
3123 {
3124         struct wpa_supplicant *iface;
3125         int shared_freq;
3126         u8 bssid[ETH_ALEN];
3127
3128         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)
3129                 return 0;
3130
3131         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
3132                 if (!wpas_p2p_create_iface(wpa_s) && iface == wpa_s)
3133                         continue;
3134                 if (iface->current_ssid == NULL || iface->assoc_freq == 0)
3135                         continue;
3136                 if (iface->current_ssid->mode == WPAS_MODE_AP ||
3137                     iface->current_ssid->mode == WPAS_MODE_P2P_GO)
3138                         shared_freq = iface->current_ssid->frequency;
3139                 else if (wpa_drv_get_bssid(iface, bssid) == 0)
3140                         shared_freq = iface->assoc_freq;
3141                 else
3142                         shared_freq = 0;
3143
3144                 if (shared_freq && freq != shared_freq) {
3145                         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - %s "
3146                                    "connected on %d MHz - new connection on "
3147                                    "%d MHz", iface->ifname, shared_freq, freq);
3148                         return 1;
3149                 }
3150         }
3151
3152         shared_freq = wpa_drv_shared_freq(wpa_s);
3153         if (shared_freq > 0 && shared_freq != freq) {
3154                 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - shared "
3155                            "virtual interface connected on %d MHz - new "
3156                            "connection on %d MHz", shared_freq, freq);
3157                 return 1;
3158         }
3159
3160         return 0;
3161 }
3162
3163
3164 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
3165                             const u8 *peer_dev_addr)
3166 {
3167         struct wpa_bss *bss;
3168         int updated;
3169
3170         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
3171         if (bss == NULL)
3172                 return -1;
3173         if (bss->last_update_idx < wpa_s->bss_update_idx) {
3174                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
3175                            "last scan");
3176                 return 0;
3177         }
3178
3179         updated = os_time_before(&wpa_s->p2p_auto_started, &bss->last_update);
3180         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
3181                    "%ld.%06ld (%supdated in last scan)",
3182                    bss->last_update.sec, bss->last_update.usec,
3183                    updated ? "": "not ");
3184
3185         return updated;
3186 }
3187
3188
3189 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
3190                                    struct wpa_scan_results *scan_res)
3191 {
3192         struct wpa_bss *bss;
3193         int freq;
3194         u8 iface_addr[ETH_ALEN];
3195
3196         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3197
3198         if (wpa_s->global->p2p_disabled)
3199                 return;
3200
3201         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
3202                    scan_res ? (int) scan_res->num : -1,
3203                    wpa_s->p2p_auto_join ? "auto_" : "");
3204
3205         if (scan_res)
3206                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
3207
3208         if (wpa_s->p2p_auto_pd) {
3209                 int join = wpas_p2p_peer_go(wpa_s,
3210                                             wpa_s->pending_join_dev_addr);
3211                 if (join == 0 &&
3212                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
3213                         wpa_s->auto_pd_scan_retry++;
3214                         bss = wpa_bss_get_bssid(wpa_s,
3215                                                 wpa_s->pending_join_dev_addr);
3216                         if (bss) {
3217                                 freq = bss->freq;
3218                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
3219                                            "the peer " MACSTR " at %d MHz",
3220                                            wpa_s->auto_pd_scan_retry,
3221                                            MAC2STR(wpa_s->
3222                                                    pending_join_dev_addr),
3223                                            freq);
3224                                 wpas_p2p_join_scan_req(wpa_s, freq);
3225                                 return;
3226                         }
3227                 }
3228
3229                 if (join < 0)
3230                         join = 0;
3231
3232                 wpa_s->p2p_auto_pd = 0;
3233                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
3234                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
3235                            MAC2STR(wpa_s->pending_join_dev_addr), join);
3236                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3237                                       wpa_s->pending_join_dev_addr,
3238                                       wpa_s->pending_pd_config_methods, join,
3239                                       0, wpa_s->user_initiated_pd) < 0) {
3240                         wpa_s->p2p_auto_pd = 0;
3241                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3242                                 " p2p_dev_addr=" MACSTR " status=N/A",
3243                                 MAC2STR(wpa_s->pending_join_dev_addr));
3244                 }
3245                 return;
3246         }
3247
3248         if (wpa_s->p2p_auto_join) {
3249                 int join = wpas_p2p_peer_go(wpa_s,
3250                                             wpa_s->pending_join_dev_addr);
3251                 if (join < 0) {
3252                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
3253                                    "running a GO -> use GO Negotiation");
3254                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
3255                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
3256                                          wpa_s->p2p_persistent_group, 0, 0, 0,
3257                                          wpa_s->p2p_go_intent,
3258                                          wpa_s->p2p_connect_freq,
3259                                          wpa_s->p2p_persistent_id,
3260                                          wpa_s->p2p_pd_before_go_neg,
3261                                          wpa_s->p2p_go_ht40);
3262                         return;
3263                 }
3264
3265                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
3266                            "try to join the group", join ? "" :
3267                            " in older scan");
3268                 if (!join)
3269                         wpa_s->p2p_fallback_to_go_neg = 1;
3270         }
3271
3272         freq = p2p_get_oper_freq(wpa_s->global->p2p,
3273                                  wpa_s->pending_join_iface_addr);
3274         if (freq < 0 &&
3275             p2p_get_interface_addr(wpa_s->global->p2p,
3276                                    wpa_s->pending_join_dev_addr,
3277                                    iface_addr) == 0 &&
3278             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
3279         {
3280                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
3281                            "address for join from " MACSTR " to " MACSTR
3282                            " based on newly discovered P2P peer entry",
3283                            MAC2STR(wpa_s->pending_join_iface_addr),
3284                            MAC2STR(iface_addr));
3285                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
3286                           ETH_ALEN);
3287
3288                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
3289                                          wpa_s->pending_join_iface_addr);
3290         }
3291         if (freq >= 0) {
3292                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3293                            "from P2P peer table: %d MHz", freq);
3294         }
3295         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3296         if (bss) {
3297                 freq = bss->freq;
3298                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3299                            "from BSS table: %d MHz", freq);
3300         }
3301         if (freq > 0) {
3302                 u16 method;
3303
3304                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
3305                         wpa_msg(wpa_s->parent, MSG_INFO,
3306                                 P2P_EVENT_GROUP_FORMATION_FAILURE
3307                                 "reason=FREQ_CONFLICT");
3308                         return;
3309                 }
3310
3311                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
3312                            "prior to joining an existing group (GO " MACSTR
3313                            " freq=%u MHz)",
3314                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
3315                 wpa_s->pending_pd_before_join = 1;
3316
3317                 switch (wpa_s->pending_join_wps_method) {
3318                 case WPS_PIN_DISPLAY:
3319                         method = WPS_CONFIG_KEYPAD;
3320                         break;
3321                 case WPS_PIN_KEYPAD:
3322                         method = WPS_CONFIG_DISPLAY;
3323                         break;
3324                 case WPS_PBC:
3325                         method = WPS_CONFIG_PUSHBUTTON;
3326                         break;
3327                 default:
3328                         method = 0;
3329                         break;
3330                 }
3331
3332                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
3333                                                wpa_s->pending_join_dev_addr) ==
3334                      method)) {
3335                         /*
3336                          * We have already performed provision discovery for
3337                          * joining the group. Proceed directly to join
3338                          * operation without duplicated provision discovery. */
3339                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
3340                                    "with " MACSTR " already done - proceed to "
3341                                    "join",
3342                                    MAC2STR(wpa_s->pending_join_dev_addr));
3343                         wpa_s->pending_pd_before_join = 0;
3344                         goto start;
3345                 }
3346
3347                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3348                                       wpa_s->pending_join_dev_addr, method, 1,
3349                                       freq, wpa_s->user_initiated_pd) < 0) {
3350                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
3351                                    "Discovery Request before joining an "
3352                                    "existing group");
3353                         wpa_s->pending_pd_before_join = 0;
3354                         goto start;
3355                 }
3356                 return;
3357         }
3358
3359         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
3360         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3361         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3362         wpas_p2p_check_join_scan_limit(wpa_s);
3363         return;
3364
3365 start:
3366         /* Start join operation immediately */
3367         wpas_p2p_join_start(wpa_s);
3368 }
3369
3370
3371 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq)
3372 {
3373         int ret;
3374         struct wpa_driver_scan_params params;
3375         struct wpabuf *wps_ie, *ies;
3376         size_t ielen;
3377         int freqs[2] = { 0, 0 };
3378
3379         os_memset(&params, 0, sizeof(params));
3380
3381         /* P2P Wildcard SSID */
3382         params.num_ssids = 1;
3383         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
3384         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
3385
3386         wpa_s->wps->dev.p2p = 1;
3387         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
3388                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
3389                                         NULL);
3390         if (wps_ie == NULL) {
3391                 wpas_p2p_scan_res_join(wpa_s, NULL);
3392                 return;
3393         }
3394
3395         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
3396         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
3397         if (ies == NULL) {
3398                 wpabuf_free(wps_ie);
3399                 wpas_p2p_scan_res_join(wpa_s, NULL);
3400                 return;
3401         }
3402         wpabuf_put_buf(ies, wps_ie);
3403         wpabuf_free(wps_ie);
3404
3405         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
3406
3407         params.p2p_probe = 1;
3408         params.extra_ies = wpabuf_head(ies);
3409         params.extra_ies_len = wpabuf_len(ies);
3410         if (freq > 0) {
3411                 freqs[0] = freq;
3412                 params.freqs = freqs;
3413         }
3414
3415         /*
3416          * Run a scan to update BSS table and start Provision Discovery once
3417          * the new scan results become available.
3418          */
3419         ret = wpa_drv_scan(wpa_s, &params);
3420         if (!ret)
3421                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
3422
3423         wpabuf_free(ies);
3424
3425         if (ret) {
3426                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
3427                            "try again later");
3428                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3429                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3430                 wpas_p2p_check_join_scan_limit(wpa_s);
3431         }
3432 }
3433
3434
3435 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
3436 {
3437         struct wpa_supplicant *wpa_s = eloop_ctx;
3438         wpas_p2p_join_scan_req(wpa_s, 0);
3439 }
3440
3441
3442 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
3443                          const u8 *dev_addr, enum p2p_wps_method wps_method,
3444                          int auto_join)
3445 {
3446         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
3447                    MACSTR " dev " MACSTR ")%s",
3448                    MAC2STR(iface_addr), MAC2STR(dev_addr),
3449                    auto_join ? " (auto_join)" : "");
3450
3451         wpa_s->p2p_auto_pd = 0;
3452         wpa_s->p2p_auto_join = !!auto_join;
3453         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
3454         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
3455         wpa_s->pending_join_wps_method = wps_method;
3456
3457         /* Make sure we are not running find during connection establishment */
3458         wpas_p2p_stop_find(wpa_s);
3459
3460         wpa_s->p2p_join_scan_count = 0;
3461         wpas_p2p_join_scan(wpa_s, NULL);
3462         return 0;
3463 }
3464
3465
3466 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
3467 {
3468         struct wpa_supplicant *group;
3469         struct p2p_go_neg_results res;
3470         struct wpa_bss *bss;
3471
3472         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
3473         if (group == NULL)
3474                 return -1;
3475         if (group != wpa_s) {
3476                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
3477                           sizeof(group->p2p_pin));
3478                 group->p2p_wps_method = wpa_s->p2p_wps_method;
3479         }
3480
3481         group->p2p_in_provisioning = 1;
3482         wpa_s->global->p2p_group_formation = wpa_s;
3483         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
3484
3485         os_memset(&res, 0, sizeof(res));
3486         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
3487                   ETH_ALEN);
3488         res.wps_method = wpa_s->pending_join_wps_method;
3489         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3490         if (bss) {
3491                 res.freq = bss->freq;
3492                 res.ssid_len = bss->ssid_len;
3493                 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
3494         }
3495
3496         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
3497                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
3498                            "starting client");
3499                 wpa_drv_cancel_remain_on_channel(wpa_s);
3500                 wpa_s->off_channel_freq = 0;
3501                 wpa_s->roc_waiting_drv_freq = 0;
3502         }
3503         wpas_start_wps_enrollee(group, &res);
3504
3505         /*
3506          * Allow a longer timeout for join-a-running-group than normal 15
3507          * second group formation timeout since the GO may not have authorized
3508          * our connection yet.
3509          */
3510         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3511         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
3512                                wpa_s, NULL);
3513
3514         return 0;
3515 }
3516
3517
3518 /**
3519  * wpas_p2p_connect - Request P2P Group Formation to be started
3520  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3521  * @peer_addr: Address of the peer P2P Device
3522  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
3523  * @persistent_group: Whether to create a persistent group
3524  * @auto_join: Whether to select join vs. GO Negotiation automatically
3525  * @join: Whether to join an existing group (as a client) instead of starting
3526  *      Group Owner negotiation; @peer_addr is BSSID in that case
3527  * @auth: Whether to only authorize the connection instead of doing that and
3528  *      initiating Group Owner negotiation
3529  * @go_intent: GO Intent or -1 to use default
3530  * @freq: Frequency for the group or 0 for auto-selection
3531  * @persistent_id: Persistent group credentials to use for forcing GO
3532  *      parameters or -1 to generate new values (SSID/passphrase)
3533  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
3534  *      interoperability workaround when initiating group formation
3535  * @ht40: Start GO with 40 MHz channel width
3536  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
3537  *      failure, -2 on failure due to channel not currently available,
3538  *      -3 if forced channel is not supported
3539  */
3540 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3541                      const char *pin, enum p2p_wps_method wps_method,
3542                      int persistent_group, int auto_join, int join, int auth,
3543                      int go_intent, int freq, int persistent_id, int pd,
3544                      int ht40)
3545 {
3546         int force_freq = 0, pref_freq = 0, oper_freq = 0;
3547         u8 bssid[ETH_ALEN];
3548         int ret = 0;
3549         enum wpa_driver_if_type iftype;
3550         const u8 *if_addr;
3551         struct wpa_ssid *ssid = NULL;
3552
3553         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3554                 return -1;
3555
3556         if (persistent_id >= 0) {
3557                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
3558                 if (ssid == NULL || ssid->disabled != 2 ||
3559                     ssid->mode != WPAS_MODE_P2P_GO)
3560                         return -1;
3561         }
3562
3563         if (go_intent < 0)
3564                 go_intent = wpa_s->conf->p2p_go_intent;
3565
3566         if (!auth)
3567                 wpa_s->p2p_long_listen = 0;
3568
3569         wpa_s->p2p_wps_method = wps_method;
3570         wpa_s->p2p_persistent_group = !!persistent_group;
3571         wpa_s->p2p_persistent_id = persistent_id;
3572         wpa_s->p2p_go_intent = go_intent;
3573         wpa_s->p2p_connect_freq = freq;
3574         wpa_s->p2p_fallback_to_go_neg = 0;
3575         wpa_s->p2p_pd_before_go_neg = !!pd;
3576         wpa_s->p2p_go_ht40 = !!ht40;
3577
3578         if (pin)
3579                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
3580         else if (wps_method == WPS_PIN_DISPLAY) {
3581                 ret = wps_generate_pin();
3582                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
3583                             ret);
3584                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
3585                            wpa_s->p2p_pin);
3586         } else
3587                 wpa_s->p2p_pin[0] = '\0';
3588
3589         if (join || auto_join) {
3590                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
3591                 if (auth) {
3592                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
3593                                    "connect a running group from " MACSTR,
3594                                    MAC2STR(peer_addr));
3595                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
3596                         return ret;
3597                 }
3598                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
3599                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
3600                                            iface_addr) < 0) {
3601                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
3602                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
3603                                          dev_addr);
3604                 }
3605                 if (auto_join) {
3606                         os_get_time(&wpa_s->p2p_auto_started);
3607                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
3608                                    "%ld.%06ld",
3609                                    wpa_s->p2p_auto_started.sec,
3610                                    wpa_s->p2p_auto_started.usec);
3611                 }
3612                 wpa_s->user_initiated_pd = 1;
3613                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
3614                                   auto_join) < 0)
3615                         return -1;
3616                 return ret;
3617         }
3618
3619         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3620             wpa_s->assoc_freq)
3621                 oper_freq = wpa_s->assoc_freq;
3622         else {
3623                 oper_freq = wpa_drv_shared_freq(wpa_s);
3624                 if (oper_freq < 0)
3625                         oper_freq = 0;
3626         }
3627
3628         if (freq > 0) {
3629                 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3630                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
3631                                    "(%u MHz) is not supported for P2P uses",
3632                                    freq);
3633                         return -3;
3634                 }
3635
3636                 if (oper_freq > 0 && freq != oper_freq &&
3637                     !(wpa_s->drv_flags &
3638                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3639                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3640                                    "on %u MHz while connected on another "
3641                                    "channel (%u MHz)", freq, oper_freq);
3642                         return -2;
3643                 }
3644                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3645                            "requested channel (%u MHz)", freq);
3646                 force_freq = freq;
3647         } else if (oper_freq > 0 &&
3648                    !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) {
3649                 if (!(wpa_s->drv_flags &
3650                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3651                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3652                                    "while connected on non-P2P supported "
3653                                    "channel (%u MHz)", oper_freq);
3654                         return -2;
3655                 }
3656                 wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
3657                            "(%u MHz) not available for P2P - try to use "
3658                            "another channel", oper_freq);
3659                 force_freq = 0;
3660         } else if (oper_freq > 0 &&
3661                    (wpa_s->drv_flags &
3662                     WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3663                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer the channel we "
3664                            "are already using (%u MHz) on another interface",
3665                            oper_freq);
3666                 pref_freq = oper_freq;
3667         } else if (oper_freq > 0) {
3668                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3669                            "channel we are already using (%u MHz) on another "
3670                            "interface", oper_freq);
3671                 force_freq = oper_freq;
3672         }
3673
3674         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
3675
3676         if (wpa_s->create_p2p_iface) {
3677                 /* Prepare to add a new interface for the group */
3678                 iftype = WPA_IF_P2P_GROUP;
3679                 if (go_intent == 15)
3680                         iftype = WPA_IF_P2P_GO;
3681                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
3682                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3683                                    "interface for the group");
3684                         return -1;
3685                 }
3686
3687                 if_addr = wpa_s->pending_interface_addr;
3688         } else
3689                 if_addr = wpa_s->own_addr;
3690
3691         if (auth) {
3692                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
3693                                          go_intent, if_addr,
3694                                          force_freq, persistent_group, ssid,
3695                                          pref_freq) < 0)
3696                         return -1;
3697                 return ret;
3698         }
3699
3700         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
3701                                   go_intent, if_addr, force_freq,
3702                                   persistent_group, ssid, pref_freq) < 0) {
3703                 if (wpa_s->create_p2p_iface)
3704                         wpas_p2p_remove_pending_group_interface(wpa_s);
3705                 return -1;
3706         }
3707         return ret;
3708 }
3709
3710
3711 /**
3712  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
3713  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3714  * @freq: Frequency of the channel in MHz
3715  * @duration: Duration of the stay on the channel in milliseconds
3716  *
3717  * This callback is called when the driver indicates that it has started the
3718  * requested remain-on-channel duration.
3719  */
3720 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3721                                    unsigned int freq, unsigned int duration)
3722 {
3723         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3724                 return;
3725         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
3726                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
3727                               wpa_s->pending_listen_duration);
3728                 wpa_s->pending_listen_freq = 0;
3729         }
3730 }
3731
3732
3733 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
3734                                  unsigned int timeout)
3735 {
3736         /* Limit maximum Listen state time based on driver limitation. */
3737         if (timeout > wpa_s->max_remain_on_chan)
3738                 timeout = wpa_s->max_remain_on_chan;
3739
3740         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3741                 return wpa_drv_p2p_listen(wpa_s, timeout);
3742
3743         return p2p_listen(wpa_s->global->p2p, timeout);
3744 }
3745
3746
3747 /**
3748  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
3749  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3750  * @freq: Frequency of the channel in MHz
3751  *
3752  * This callback is called when the driver indicates that a remain-on-channel
3753  * operation has been completed, i.e., the duration on the requested channel
3754  * has timed out.
3755  */
3756 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3757                                           unsigned int freq)
3758 {
3759         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
3760                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
3761                    wpa_s->p2p_long_listen, wpa_s->pending_action_tx);
3762         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3763                 return;
3764         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
3765                 return; /* P2P module started a new operation */
3766         if (wpa_s->pending_action_tx)
3767                 return;
3768         if (wpa_s->p2p_long_listen > 0)
3769                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
3770         if (wpa_s->p2p_long_listen > 0) {
3771                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
3772                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
3773         }
3774 }
3775
3776
3777 /**
3778  * wpas_p2p_group_remove - Remove a P2P group
3779  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3780  * @ifname: Network interface name of the group interface or "*" to remove all
3781  *      groups
3782  * Returns: 0 on success, -1 on failure
3783  *
3784  * This function is used to remove a P2P group. This can be used to disconnect
3785  * from a group in which the local end is a P2P Client or to end a P2P Group in
3786  * case the local end is the Group Owner. If a virtual network interface was
3787  * created for this group, that interface will be removed. Otherwise, only the
3788  * configured P2P group network will be removed from the interface.
3789  */
3790 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
3791 {
3792         struct wpa_global *global = wpa_s->global;
3793
3794         if (os_strcmp(ifname, "*") == 0) {
3795                 struct wpa_supplicant *prev;
3796                 wpa_s = global->ifaces;
3797                 while (wpa_s) {
3798                         prev = wpa_s;
3799                         wpa_s = wpa_s->next;
3800                         wpas_p2p_disconnect(prev);
3801                 }
3802                 return 0;
3803         }
3804
3805         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3806                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
3807                         break;
3808         }
3809
3810         return wpas_p2p_disconnect(wpa_s);
3811 }
3812
3813
3814 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
3815                                    struct p2p_go_neg_results *params,
3816                                    int freq, int ht40)
3817 {
3818         u8 bssid[ETH_ALEN];
3819         int res;
3820
3821         os_memset(params, 0, sizeof(*params));
3822         params->role_go = 1;
3823         params->ht40 = ht40;
3824         if (freq) {
3825                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
3826                            "frequency %d MHz", freq);
3827                 params->freq = freq;
3828         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
3829                    wpa_s->conf->p2p_oper_channel >= 1 &&
3830                    wpa_s->conf->p2p_oper_channel <= 11) {
3831                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
3832                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3833                            "frequency %d MHz", params->freq);
3834         } else if (wpa_s->conf->p2p_oper_reg_class == 115 ||
3835                    wpa_s->conf->p2p_oper_reg_class == 124) {
3836                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
3837                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3838                            "frequency %d MHz", params->freq);
3839         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3840                    wpa_s->best_overall_freq > 0 &&
3841                    p2p_supported_freq(wpa_s->global->p2p,
3842                                       wpa_s->best_overall_freq)) {
3843                 params->freq = wpa_s->best_overall_freq;
3844                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
3845                            "channel %d MHz", params->freq);
3846         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3847                    wpa_s->best_24_freq > 0 &&
3848                    p2p_supported_freq(wpa_s->global->p2p,
3849                                       wpa_s->best_24_freq)) {
3850                 params->freq = wpa_s->best_24_freq;
3851                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
3852                            "channel %d MHz", params->freq);
3853         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3854                    wpa_s->best_5_freq > 0 &&
3855                    p2p_supported_freq(wpa_s->global->p2p,
3856                                       wpa_s->best_5_freq)) {
3857                 params->freq = wpa_s->best_5_freq;
3858                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
3859                            "channel %d MHz", params->freq);
3860         } else {
3861                 int chan;
3862                 for (chan = 0; chan < 11; chan++) {
3863                         params->freq = 2412 + chan * 5;
3864                         if (!wpas_p2p_disallowed_freq(wpa_s->global,
3865                                                       params->freq))
3866                                 break;
3867                 }
3868                 if (chan == 11) {
3869                         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
3870                                    "allowed");
3871                         return -1;
3872                 }
3873                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
3874                            "known)", params->freq);
3875         }
3876
3877         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3878             wpa_s->assoc_freq && !freq) {
3879                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3880                            "already using");
3881                 params->freq = wpa_s->assoc_freq;
3882         }
3883
3884         res = wpa_drv_shared_freq(wpa_s);
3885         if (res > 0 && !freq) {
3886                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3887                            "already using on a shared interface");
3888                 params->freq = res;
3889         } else if (res > 0 && freq != res &&
3890                    !(wpa_s->drv_flags &
3891                      WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3892                 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz "
3893                            "while connected on another channel (%u MHz)",
3894                            freq, res);
3895                 return -1;
3896         }
3897
3898         return 0;
3899 }
3900
3901
3902 static struct wpa_supplicant *
3903 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
3904                          int go)
3905 {
3906         struct wpa_supplicant *group_wpa_s;
3907
3908         if (!wpas_p2p_create_iface(wpa_s)) {
3909                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
3910                         "operations");
3911                 return wpa_s;
3912         }
3913
3914         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
3915                                          WPA_IF_P2P_CLIENT) < 0) {
3916                 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to add group interface");
3917                 return NULL;
3918         }
3919         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
3920         if (group_wpa_s == NULL) {
3921                 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to initialize group "
3922                         "interface");
3923                 wpas_p2p_remove_pending_group_interface(wpa_s);
3924                 return NULL;
3925         }
3926
3927         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
3928                 group_wpa_s->ifname);
3929         return group_wpa_s;
3930 }
3931
3932
3933 /**
3934  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
3935  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3936  * @persistent_group: Whether to create a persistent group
3937  * @freq: Frequency for the group or 0 to indicate no hardcoding
3938  * Returns: 0 on success, -1 on failure
3939  *
3940  * This function creates a new P2P group with the local end as the Group Owner,
3941  * i.e., without using Group Owner Negotiation.
3942  */
3943 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
3944                        int freq, int ht40)
3945 {
3946         struct p2p_go_neg_results params;
3947         unsigned int r;
3948
3949         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3950                 return -1;
3951
3952         /* Make sure we are not running find during connection establishment */
3953         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
3954         wpas_p2p_stop_find_oper(wpa_s);
3955
3956         if (freq == 2) {
3957                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
3958                            "band");
3959                 if (wpa_s->best_24_freq > 0 &&
3960                     p2p_supported_freq(wpa_s->global->p2p,
3961                                        wpa_s->best_24_freq)) {
3962                         freq = wpa_s->best_24_freq;
3963                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
3964                                    "channel: %d MHz", freq);
3965                 } else {
3966                         os_get_random((u8 *) &r, sizeof(r));
3967                         freq = 2412 + (r % 3) * 25;
3968                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
3969                                    "channel: %d MHz", freq);
3970                 }
3971         }
3972
3973         if (freq == 5) {
3974                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
3975                            "band");
3976                 if (wpa_s->best_5_freq > 0 &&
3977                     p2p_supported_freq(wpa_s->global->p2p,
3978                                        wpa_s->best_5_freq)) {
3979                         freq = wpa_s->best_5_freq;
3980                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
3981                                    "channel: %d MHz", freq);
3982                 } else {
3983                         os_get_random((u8 *) &r, sizeof(r));
3984                         freq = 5180 + (r % 4) * 20;
3985                         if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3986                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
3987                                            "5 GHz channel for P2P group");
3988                                 return -1;
3989                         }
3990                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
3991                                    "channel: %d MHz", freq);
3992                 }
3993         }
3994
3995         if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) {
3996                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
3997                            "(%u MHz) is not supported for P2P uses",
3998                            freq);
3999                 return -1;
4000         }
4001
4002         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
4003                 return -1;
4004         if (params.freq &&
4005             !p2p_supported_freq(wpa_s->global->p2p, params.freq)) {
4006                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
4007                            "(%u MHz) is not supported for P2P uses",
4008                            params.freq);
4009                 return -1;
4010         }
4011         p2p_go_params(wpa_s->global->p2p, &params);
4012         params.persistent_group = persistent_group;
4013
4014         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
4015         if (wpa_s == NULL)
4016                 return -1;
4017         wpas_start_wps_go(wpa_s, &params, 0);
4018
4019         return 0;
4020 }
4021
4022
4023 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
4024                                  struct wpa_ssid *params, int addr_allocated)
4025 {
4026         struct wpa_ssid *ssid;
4027
4028         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
4029         if (wpa_s == NULL)
4030                 return -1;
4031
4032         wpa_supplicant_ap_deinit(wpa_s);
4033
4034         ssid = wpa_config_add_network(wpa_s->conf);
4035         if (ssid == NULL)
4036                 return -1;
4037         wpa_config_set_network_defaults(ssid);
4038         ssid->temporary = 1;
4039         ssid->proto = WPA_PROTO_RSN;
4040         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
4041         ssid->group_cipher = WPA_CIPHER_CCMP;
4042         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
4043         ssid->ssid = os_malloc(params->ssid_len);
4044         if (ssid->ssid == NULL) {
4045                 wpa_config_remove_network(wpa_s->conf, ssid->id);
4046                 return -1;
4047         }
4048         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
4049         ssid->ssid_len = params->ssid_len;
4050         ssid->p2p_group = 1;
4051         ssid->export_keys = 1;
4052         if (params->psk_set) {
4053                 os_memcpy(ssid->psk, params->psk, 32);
4054                 ssid->psk_set = 1;
4055         }
4056         if (params->passphrase)
4057                 ssid->passphrase = os_strdup(params->passphrase);
4058
4059         wpa_supplicant_select_network(wpa_s, ssid);
4060
4061         wpa_s->show_group_started = 1;
4062
4063         return 0;
4064 }
4065
4066
4067 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
4068                                   struct wpa_ssid *ssid, int addr_allocated,
4069                                   int freq, int ht40)
4070 {
4071         struct p2p_go_neg_results params;
4072         int go = 0;
4073
4074         if (ssid->disabled != 2 || ssid->ssid == NULL)
4075                 return -1;
4076
4077         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
4078             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
4079                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
4080                            "already running");
4081                 return 0;
4082         }
4083
4084         /* Make sure we are not running find during connection establishment */
4085         wpas_p2p_stop_find_oper(wpa_s);
4086
4087         wpa_s->p2p_fallback_to_go_neg = 0;
4088
4089         if (ssid->mode == WPAS_MODE_INFRA)
4090                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
4091
4092         if (ssid->mode != WPAS_MODE_P2P_GO)
4093                 return -1;
4094
4095         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
4096                 return -1;
4097
4098         params.role_go = 1;
4099         params.psk_set = ssid->psk_set;
4100         if (params.psk_set)
4101                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
4102         if (ssid->passphrase == NULL ||
4103             os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
4104                 wpa_printf(MSG_DEBUG, "P2P: Invalid passphrase in persistent "
4105                            "group");
4106                 return -1;
4107         }
4108         os_strlcpy(params.passphrase, ssid->passphrase,
4109                    sizeof(params.passphrase));
4110         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
4111         params.ssid_len = ssid->ssid_len;
4112         params.persistent_group = 1;
4113
4114         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
4115         if (wpa_s == NULL)
4116                 return -1;
4117
4118         wpas_start_wps_go(wpa_s, &params, 0);
4119
4120         return 0;
4121 }
4122
4123
4124 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
4125                                struct wpabuf *proberesp_ies)
4126 {
4127         struct wpa_supplicant *wpa_s = ctx;
4128         if (wpa_s->ap_iface) {
4129                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
4130                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
4131                         wpabuf_free(beacon_ies);
4132                         wpabuf_free(proberesp_ies);
4133                         return;
4134                 }
4135                 if (beacon_ies) {
4136                         wpabuf_free(hapd->p2p_beacon_ie);
4137                         hapd->p2p_beacon_ie = beacon_ies;
4138                 }
4139                 wpabuf_free(hapd->p2p_probe_resp_ie);
4140                 hapd->p2p_probe_resp_ie = proberesp_ies;
4141         } else {
4142                 wpabuf_free(beacon_ies);
4143                 wpabuf_free(proberesp_ies);
4144         }
4145         wpa_supplicant_ap_update_beacon(wpa_s);
4146 }
4147
4148
4149 static void wpas_p2p_idle_update(void *ctx, int idle)
4150 {
4151         struct wpa_supplicant *wpa_s = ctx;
4152         if (!wpa_s->ap_iface)
4153                 return;
4154         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
4155         if (idle)
4156                 wpas_p2p_set_group_idle_timeout(wpa_s);
4157         else
4158                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4159 }
4160
4161
4162 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
4163                                        struct wpa_ssid *ssid)
4164 {
4165         struct p2p_group *group;
4166         struct p2p_group_config *cfg;
4167
4168         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4169                 return NULL;
4170         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4171                 return NULL;
4172
4173         cfg = os_zalloc(sizeof(*cfg));
4174         if (cfg == NULL)
4175                 return NULL;
4176
4177         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
4178                 cfg->persistent_group = 2;
4179         else if (ssid->p2p_persistent_group)
4180                 cfg->persistent_group = 1;
4181         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
4182         if (wpa_s->max_stations &&
4183             wpa_s->max_stations < wpa_s->conf->max_num_sta)
4184                 cfg->max_clients = wpa_s->max_stations;
4185         else
4186                 cfg->max_clients = wpa_s->conf->max_num_sta;
4187         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
4188         cfg->ssid_len = ssid->ssid_len;
4189         cfg->cb_ctx = wpa_s;
4190         cfg->ie_update = wpas_p2p_ie_update;
4191         cfg->idle_update = wpas_p2p_idle_update;
4192
4193         group = p2p_group_init(wpa_s->global->p2p, cfg);
4194         if (group == NULL)
4195                 os_free(cfg);
4196         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
4197                 p2p_group_notif_formation_done(group);
4198         wpa_s->p2p_group = group;
4199         return group;
4200 }
4201
4202
4203 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4204                           int registrar)
4205 {
4206         struct wpa_ssid *ssid = wpa_s->current_ssid;
4207
4208         if (!wpa_s->p2p_in_provisioning) {
4209                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
4210                            "provisioning not in progress");
4211                 return;
4212         }
4213
4214         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4215                 u8 go_dev_addr[ETH_ALEN];
4216                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
4217                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4218                                           ssid->ssid_len);
4219                 /* Clear any stored provisioning info */
4220                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
4221         }
4222
4223         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
4224                              NULL);
4225         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4226                 /*
4227                  * Use a separate timeout for initial data connection to
4228                  * complete to allow the group to be removed automatically if
4229                  * something goes wrong in this step before the P2P group idle
4230                  * timeout mechanism is taken into use.
4231                  */
4232                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
4233                                        wpas_p2p_group_formation_timeout,
4234                                        wpa_s->parent, NULL);
4235         }
4236         if (wpa_s->global->p2p)
4237                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
4238         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4239                 wpa_drv_wps_success_cb(wpa_s, peer_addr);
4240         wpas_group_formation_completed(wpa_s, 1);
4241 }
4242
4243
4244 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
4245                          struct wps_event_fail *fail)
4246 {
4247         if (!wpa_s->p2p_in_provisioning) {
4248                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
4249                            "provisioning not in progress");
4250                 return;
4251         }
4252
4253         if (wpa_s->go_params) {
4254                 p2p_clear_provisioning_info(
4255                         wpa_s->global->p2p,
4256                         wpa_s->go_params->peer_device_addr);
4257         }
4258
4259         wpas_notify_p2p_wps_failed(wpa_s, fail);
4260 }
4261
4262
4263 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4264                        const char *config_method,
4265                        enum wpas_p2p_prov_disc_use use)
4266 {
4267         u16 config_methods;
4268
4269         wpa_s->p2p_fallback_to_go_neg = 0;
4270         wpa_s->pending_pd_use = NORMAL_PD;
4271         if (os_strncmp(config_method, "display", 7) == 0)
4272                 config_methods = WPS_CONFIG_DISPLAY;
4273         else if (os_strncmp(config_method, "keypad", 6) == 0)
4274                 config_methods = WPS_CONFIG_KEYPAD;
4275         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
4276                  os_strncmp(config_method, "pushbutton", 10) == 0)
4277                 config_methods = WPS_CONFIG_PUSHBUTTON;
4278         else {
4279                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
4280                 return -1;
4281         }
4282
4283         if (use == WPAS_P2P_PD_AUTO) {
4284                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
4285                 wpa_s->pending_pd_config_methods = config_methods;
4286                 wpa_s->p2p_auto_pd = 1;
4287                 wpa_s->p2p_auto_join = 0;
4288                 wpa_s->pending_pd_before_join = 0;
4289                 wpa_s->auto_pd_scan_retry = 0;
4290                 wpas_p2p_stop_find(wpa_s);
4291                 wpa_s->p2p_join_scan_count = 0;
4292                 os_get_time(&wpa_s->p2p_auto_started);
4293                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
4294                            wpa_s->p2p_auto_started.sec,
4295                            wpa_s->p2p_auto_started.usec);
4296                 wpas_p2p_join_scan(wpa_s, NULL);
4297                 return 0;
4298         }
4299
4300         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4301                 return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr,
4302                                                  config_methods,
4303                                                  use == WPAS_P2P_PD_FOR_JOIN);
4304         }
4305
4306         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
4307                 return -1;
4308
4309         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
4310                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
4311                                  0, 1);
4312 }
4313
4314
4315 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
4316                               char *end)
4317 {
4318         return p2p_scan_result_text(ies, ies_len, buf, end);
4319 }
4320
4321
4322 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
4323 {
4324         if (!wpa_s->pending_action_tx)
4325                 return;
4326
4327         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
4328                    "operation request");
4329         wpabuf_free(wpa_s->pending_action_tx);
4330         wpa_s->pending_action_tx = NULL;
4331 }
4332
4333
4334 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
4335                   enum p2p_discovery_type type,
4336                   unsigned int num_req_dev_types, const u8 *req_dev_types,
4337                   const u8 *dev_id, unsigned int search_delay)
4338 {
4339         wpas_p2p_clear_pending_action_tx(wpa_s);
4340         wpa_s->p2p_long_listen = 0;
4341
4342         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4343                 return wpa_drv_p2p_find(wpa_s, timeout, type);
4344
4345         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
4346             wpa_s->p2p_in_provisioning)
4347                 return -1;
4348
4349         wpa_supplicant_cancel_sched_scan(wpa_s);
4350
4351         return p2p_find(wpa_s->global->p2p, timeout, type,
4352                         num_req_dev_types, req_dev_types, dev_id,
4353                         search_delay);
4354 }
4355
4356
4357 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
4358 {
4359         wpas_p2p_clear_pending_action_tx(wpa_s);
4360         wpa_s->p2p_long_listen = 0;
4361         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4362         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4363         wpa_s->global->p2p_cb_on_scan_complete = 0;
4364
4365         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4366                 wpa_drv_p2p_stop_find(wpa_s);
4367                 return 1;
4368         }
4369
4370         if (wpa_s->global->p2p)
4371                 p2p_stop_find(wpa_s->global->p2p);
4372
4373         return 0;
4374 }
4375
4376
4377 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
4378 {
4379         if (wpas_p2p_stop_find_oper(wpa_s) > 0)
4380                 return;
4381         wpas_p2p_remove_pending_group_interface(wpa_s);
4382 }
4383
4384
4385 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4386 {
4387         struct wpa_supplicant *wpa_s = eloop_ctx;
4388         wpa_s->p2p_long_listen = 0;
4389 }
4390
4391
4392 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
4393 {
4394         int res;
4395
4396         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4397                 return -1;
4398
4399         wpa_supplicant_cancel_sched_scan(wpa_s);
4400         wpas_p2p_clear_pending_action_tx(wpa_s);
4401
4402         if (timeout == 0) {
4403                 /*
4404                  * This is a request for unlimited Listen state. However, at
4405                  * least for now, this is mapped to a Listen state for one
4406                  * hour.
4407                  */
4408                 timeout = 3600;
4409         }
4410         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4411         wpa_s->p2p_long_listen = 0;
4412
4413         /*
4414          * Stop previous find/listen operation to avoid trying to request a new
4415          * remain-on-channel operation while the driver is still running the
4416          * previous one.
4417          */
4418         if (wpa_s->global->p2p)
4419                 p2p_stop_find(wpa_s->global->p2p);
4420
4421         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
4422         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
4423                 wpa_s->p2p_long_listen = timeout * 1000;
4424                 eloop_register_timeout(timeout, 0,
4425                                        wpas_p2p_long_listen_timeout,
4426                                        wpa_s, NULL);
4427         }
4428
4429         return res;
4430 }
4431
4432
4433 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
4434                           u8 *buf, size_t len, int p2p_group)
4435 {
4436         struct wpabuf *p2p_ie;
4437         int ret;
4438
4439         if (wpa_s->global->p2p_disabled)
4440                 return -1;
4441         if (wpa_s->global->p2p == NULL)
4442                 return -1;
4443         if (bss == NULL)
4444                 return -1;
4445
4446         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
4447         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
4448                                p2p_group, p2p_ie);
4449         wpabuf_free(p2p_ie);
4450
4451         return ret;
4452 }
4453
4454
4455 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
4456                           const u8 *dst, const u8 *bssid,
4457                           const u8 *ie, size_t ie_len, int ssi_signal)
4458 {
4459         if (wpa_s->global->p2p_disabled)
4460                 return 0;
4461         if (wpa_s->global->p2p == NULL)
4462                 return 0;
4463
4464         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
4465                                  ie, ie_len)) {
4466         case P2P_PREQ_NOT_P2P:
4467                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
4468                                  ssi_signal);
4469                 /* fall through */
4470         case P2P_PREQ_MALFORMED:
4471         case P2P_PREQ_NOT_LISTEN:
4472         case P2P_PREQ_NOT_PROCESSED:
4473         default: /* make gcc happy */
4474                 return 0;
4475         case P2P_PREQ_PROCESSED:
4476                 return 1;
4477         }
4478 }
4479
4480
4481 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
4482                         const u8 *sa, const u8 *bssid,
4483                         u8 category, const u8 *data, size_t len, int freq)
4484 {
4485         if (wpa_s->global->p2p_disabled)
4486                 return;
4487         if (wpa_s->global->p2p == NULL)
4488                 return;
4489
4490         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
4491                       freq);
4492 }
4493
4494
4495 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
4496 {
4497         if (wpa_s->global->p2p_disabled)
4498                 return;
4499         if (wpa_s->global->p2p == NULL)
4500                 return;
4501
4502         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4503 }
4504
4505
4506 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
4507 {
4508         p2p_group_deinit(wpa_s->p2p_group);
4509         wpa_s->p2p_group = NULL;
4510
4511         wpa_s->ap_configured_cb = NULL;
4512         wpa_s->ap_configured_cb_ctx = NULL;
4513         wpa_s->ap_configured_cb_data = NULL;
4514         wpa_s->connect_without_scan = NULL;
4515 }
4516
4517
4518 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
4519 {
4520         wpa_s->p2p_long_listen = 0;
4521
4522         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4523                 return wpa_drv_p2p_reject(wpa_s, addr);
4524
4525         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4526                 return -1;
4527
4528         return p2p_reject(wpa_s->global->p2p, addr);
4529 }
4530
4531
4532 /* Invite to reinvoke a persistent group */
4533 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4534                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
4535                     int ht40)
4536 {
4537         enum p2p_invite_role role;
4538         u8 *bssid = NULL;
4539
4540         wpa_s->p2p_persistent_go_freq = freq;
4541         wpa_s->p2p_go_ht40 = !!ht40;
4542         if (ssid->mode == WPAS_MODE_P2P_GO) {
4543                 role = P2P_INVITE_ROLE_GO;
4544                 if (peer_addr == NULL) {
4545                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
4546                                    "address in invitation command");
4547                         return -1;
4548                 }
4549                 if (wpas_p2p_create_iface(wpa_s)) {
4550                         if (wpas_p2p_add_group_interface(wpa_s,
4551                                                          WPA_IF_P2P_GO) < 0) {
4552                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
4553                                            "allocate a new interface for the "
4554                                            "group");
4555                                 return -1;
4556                         }
4557                         bssid = wpa_s->pending_interface_addr;
4558                 } else
4559                         bssid = wpa_s->own_addr;
4560         } else {
4561                 role = P2P_INVITE_ROLE_CLIENT;
4562                 peer_addr = ssid->bssid;
4563         }
4564         wpa_s->pending_invite_ssid_id = ssid->id;
4565
4566         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4567                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4568                                           ssid->ssid, ssid->ssid_len,
4569                                           go_dev_addr, 1);
4570
4571         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4572                 return -1;
4573
4574         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4575                           ssid->ssid, ssid->ssid_len, freq, go_dev_addr, 1);
4576 }
4577
4578
4579 /* Invite to join an active group */
4580 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
4581                           const u8 *peer_addr, const u8 *go_dev_addr)
4582 {
4583         struct wpa_global *global = wpa_s->global;
4584         enum p2p_invite_role role;
4585         u8 *bssid = NULL;
4586         struct wpa_ssid *ssid;
4587         int persistent;
4588
4589         wpa_s->p2p_persistent_go_freq = 0;
4590         wpa_s->p2p_go_ht40 = 0;
4591
4592         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4593                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4594                         break;
4595         }
4596         if (wpa_s == NULL) {
4597                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
4598                 return -1;
4599         }
4600
4601         ssid = wpa_s->current_ssid;
4602         if (ssid == NULL) {
4603                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
4604                            "invitation");
4605                 return -1;
4606         }
4607
4608         persistent = ssid->p2p_persistent_group &&
4609                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
4610                                         ssid->ssid, ssid->ssid_len);
4611
4612         if (ssid->mode == WPAS_MODE_P2P_GO) {
4613                 role = P2P_INVITE_ROLE_ACTIVE_GO;
4614                 bssid = wpa_s->own_addr;
4615                 if (go_dev_addr == NULL)
4616                         go_dev_addr = wpa_s->global->p2p_dev_addr;
4617         } else {
4618                 role = P2P_INVITE_ROLE_CLIENT;
4619                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
4620                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
4621                                    "invite to current group");
4622                         return -1;
4623                 }
4624                 bssid = wpa_s->bssid;
4625                 if (go_dev_addr == NULL &&
4626                     !is_zero_ether_addr(wpa_s->go_dev_addr))
4627                         go_dev_addr = wpa_s->go_dev_addr;
4628         }
4629         wpa_s->parent->pending_invite_ssid_id = -1;
4630
4631         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4632                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4633                                           ssid->ssid, ssid->ssid_len,
4634                                           go_dev_addr, persistent);
4635
4636         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4637                 return -1;
4638
4639         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4640                           ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq,
4641                           go_dev_addr, persistent);
4642 }
4643
4644
4645 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
4646 {
4647         struct wpa_ssid *ssid = wpa_s->current_ssid;
4648         const char *ssid_txt;
4649         u8 go_dev_addr[ETH_ALEN];
4650         int network_id = -1;
4651         int persistent;
4652         int freq;
4653
4654         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
4655                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
4656                                      wpa_s->parent, NULL);
4657         }
4658
4659         if (!wpa_s->show_group_started || !ssid)
4660                 goto done;
4661
4662         wpa_s->show_group_started = 0;
4663
4664         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
4665         os_memset(go_dev_addr, 0, ETH_ALEN);
4666         if (ssid->bssid_set)
4667                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
4668         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4669                                                ssid->ssid_len);
4670         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
4671
4672         if (wpa_s->global->p2p_group_formation == wpa_s)
4673                 wpa_s->global->p2p_group_formation = NULL;
4674
4675         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
4676                 (int) wpa_s->assoc_freq;
4677         if (ssid->passphrase == NULL && ssid->psk_set) {
4678                 char psk[65];
4679                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
4680                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4681                         "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr="
4682                         MACSTR "%s",
4683                         wpa_s->ifname, ssid_txt, freq, psk,
4684                         MAC2STR(go_dev_addr),
4685                         persistent ? " [PERSISTENT]" : "");
4686         } else {
4687                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4688                         "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" "
4689                         "go_dev_addr=" MACSTR "%s",
4690                         wpa_s->ifname, ssid_txt, freq,
4691                         ssid->passphrase ? ssid->passphrase : "",
4692                         MAC2STR(go_dev_addr),
4693                         persistent ? " [PERSISTENT]" : "");
4694         }
4695
4696         if (persistent)
4697                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
4698                                                              ssid, go_dev_addr);
4699         if (network_id < 0)
4700                 network_id = ssid->id;
4701         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
4702
4703 done:
4704         if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
4705             wpa_s->global->p2p != NULL) {
4706                 wpa_s->global->p2p_cb_on_scan_complete = 0;
4707                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
4708                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
4709                                 "continued after successful connection");
4710                         p2p_increase_search_delay(
4711                                 wpa_s->global->p2p,
4712                                 wpas_p2p_search_delay(wpa_s));
4713                 }
4714         }
4715 }
4716
4717
4718 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
4719                           u32 interval1, u32 duration2, u32 interval2)
4720 {
4721         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4722                 return -1;
4723         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4724                 return -1;
4725
4726         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
4727             wpa_s->current_ssid == NULL ||
4728             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
4729                 return -1;
4730
4731         return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
4732                                 wpa_s->own_addr, wpa_s->assoc_freq,
4733                                 duration1, interval1, duration2, interval2);
4734 }
4735
4736
4737 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
4738                         unsigned int interval)
4739 {
4740         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4741                 return -1;
4742
4743         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4744                 return -1;
4745
4746         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
4747 }
4748
4749
4750 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
4751 {
4752         if (wpa_s->current_ssid == NULL) {
4753                 /*
4754                  * current_ssid can be cleared when P2P client interface gets
4755                  * disconnected, so assume this interface was used as P2P
4756                  * client.
4757                  */
4758                 return 1;
4759         }
4760         return wpa_s->current_ssid->p2p_group &&
4761                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
4762 }
4763
4764
4765 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
4766 {
4767         struct wpa_supplicant *wpa_s = eloop_ctx;
4768
4769         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
4770                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
4771                            "disabled");
4772                 return;
4773         }
4774
4775         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
4776                    "group");
4777         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
4778 }
4779
4780
4781 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
4782 {
4783         int timeout;
4784
4785         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
4786                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
4787
4788         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
4789                 return;
4790
4791         timeout = wpa_s->conf->p2p_group_idle;
4792         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
4793             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
4794             timeout = P2P_MAX_CLIENT_IDLE;
4795
4796         if (timeout == 0)
4797                 return;
4798
4799         if (timeout < 0) {
4800                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
4801                         timeout = 0; /* special client mode no-timeout */
4802                 else
4803                         return;
4804         }
4805
4806         if (wpa_s->p2p_in_provisioning) {
4807                 /*
4808                  * Use the normal group formation timeout during the
4809                  * provisioning phase to avoid terminating this process too
4810                  * early due to group idle timeout.
4811                  */
4812                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4813                            "during provisioning");
4814                 return;
4815         }
4816
4817         if (wpa_s->show_group_started) {
4818                 /*
4819                  * Use the normal group formation timeout between the end of
4820                  * the provisioning phase and completion of 4-way handshake to
4821                  * avoid terminating this process too early due to group idle
4822                  * timeout.
4823                  */
4824                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4825                            "while waiting for initial 4-way handshake to "
4826                            "complete");
4827                 return;
4828         }
4829
4830         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
4831                    timeout);
4832         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
4833                                wpa_s, NULL);
4834 }
4835
4836
4837 /* Returns 1 if the interface was removed */
4838 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4839                           u16 reason_code, const u8 *ie, size_t ie_len,
4840                           int locally_generated)
4841 {
4842         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4843                 return 0;
4844         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4845                 return 0;
4846
4847         if (!locally_generated)
4848                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4849                                  ie_len);
4850
4851         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
4852             wpa_s->current_ssid &&
4853             wpa_s->current_ssid->p2p_group &&
4854             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
4855                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
4856                            "session is ending");
4857                 if (wpas_p2p_group_delete(wpa_s,
4858                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
4859                     > 0)
4860                         return 1;
4861         }
4862
4863         return 0;
4864 }
4865
4866
4867 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4868                              u16 reason_code, const u8 *ie, size_t ie_len,
4869                              int locally_generated)
4870 {
4871         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4872                 return;
4873         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4874                 return;
4875
4876         if (!locally_generated)
4877                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4878                                    ie_len);
4879 }
4880
4881
4882 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
4883 {
4884         struct p2p_data *p2p = wpa_s->global->p2p;
4885
4886         if (p2p == NULL)
4887                 return;
4888
4889         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4890                 return;
4891
4892         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
4893                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
4894
4895         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
4896                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
4897
4898         if (wpa_s->wps &&
4899             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
4900                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
4901
4902         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
4903                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
4904
4905         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
4906                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
4907                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
4908                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
4909                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
4910         }
4911
4912         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
4913                 p2p_set_sec_dev_types(p2p,
4914                                       (void *) wpa_s->conf->sec_device_type,
4915                                       wpa_s->conf->num_sec_device_types);
4916
4917         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
4918                 int i;
4919                 p2p_remove_wps_vendor_extensions(p2p);
4920                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4921                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4922                                 continue;
4923                         p2p_add_wps_vendor_extension(
4924                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
4925                 }
4926         }
4927
4928         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
4929             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4930                 char country[3];
4931                 country[0] = wpa_s->conf->country[0];
4932                 country[1] = wpa_s->conf->country[1];
4933                 country[2] = 0x04;
4934                 p2p_set_country(p2p, country);
4935         }
4936
4937         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
4938                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
4939                                      wpa_s->conf->p2p_ssid_postfix ?
4940                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
4941                                      0);
4942         }
4943
4944         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
4945                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
4946
4947         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
4948                 u8 reg_class, channel;
4949                 int ret;
4950                 unsigned int r;
4951                 if (wpa_s->conf->p2p_listen_reg_class &&
4952                     wpa_s->conf->p2p_listen_channel) {
4953                         reg_class = wpa_s->conf->p2p_listen_reg_class;
4954                         channel = wpa_s->conf->p2p_listen_channel;
4955                 } else {
4956                         reg_class = 81;
4957                         /*
4958                          * Pick one of the social channels randomly as the
4959                          * listen channel.
4960                          */
4961                         os_get_random((u8 *) &r, sizeof(r));
4962                         channel = 1 + (r % 3) * 5;
4963                 }
4964                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
4965                 if (ret)
4966                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
4967                                    "failed: %d", ret);
4968         }
4969         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
4970                 u8 op_reg_class, op_channel, cfg_op_channel;
4971                 int ret = 0;
4972                 unsigned int r;
4973                 if (wpa_s->conf->p2p_oper_reg_class &&
4974                     wpa_s->conf->p2p_oper_channel) {
4975                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4976                         op_channel = wpa_s->conf->p2p_oper_channel;
4977                         cfg_op_channel = 1;
4978                 } else {
4979                         op_reg_class = 81;
4980                         /*
4981                          * Use random operation channel from (1, 6, 11)
4982                          *if no other preference is indicated.
4983                          */
4984                         os_get_random((u8 *) &r, sizeof(r));
4985                         op_channel = 1 + (r % 3) * 5;
4986                         cfg_op_channel = 0;
4987                 }
4988                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
4989                                            cfg_op_channel);
4990                 if (ret)
4991                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
4992                                    "failed: %d", ret);
4993         }
4994
4995         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
4996                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
4997                                       wpa_s->conf->p2p_pref_chan) < 0) {
4998                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
4999                                    "update failed");
5000                 }
5001         }
5002 }
5003
5004
5005 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
5006                      int duration)
5007 {
5008         if (!wpa_s->ap_iface)
5009                 return -1;
5010         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
5011                                    duration);
5012 }
5013
5014
5015 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
5016 {
5017         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5018                 return -1;
5019         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
5020                 return -1;
5021
5022         wpa_s->global->cross_connection = enabled;
5023         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
5024
5025         if (!enabled) {
5026                 struct wpa_supplicant *iface;
5027
5028                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
5029                 {
5030                         if (iface->cross_connect_enabled == 0)
5031                                 continue;
5032
5033                         iface->cross_connect_enabled = 0;
5034                         iface->cross_connect_in_use = 0;
5035                         wpa_msg(iface->parent, MSG_INFO,
5036                                 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
5037                                 iface->ifname, iface->cross_connect_uplink);
5038                 }
5039         }
5040
5041         return 0;
5042 }
5043
5044
5045 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
5046 {
5047         struct wpa_supplicant *iface;
5048
5049         if (!uplink->global->cross_connection)
5050                 return;
5051
5052         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
5053                 if (!iface->cross_connect_enabled)
5054                         continue;
5055                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
5056                     0)
5057                         continue;
5058                 if (iface->ap_iface == NULL)
5059                         continue;
5060                 if (iface->cross_connect_in_use)
5061                         continue;
5062
5063                 iface->cross_connect_in_use = 1;
5064                 wpa_msg(iface->parent, MSG_INFO,
5065                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
5066                         iface->ifname, iface->cross_connect_uplink);
5067         }
5068 }
5069
5070
5071 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
5072 {
5073         struct wpa_supplicant *iface;
5074
5075         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
5076                 if (!iface->cross_connect_enabled)
5077                         continue;
5078                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
5079                     0)
5080                         continue;
5081                 if (!iface->cross_connect_in_use)
5082                         continue;
5083
5084                 wpa_msg(iface->parent, MSG_INFO,
5085                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
5086                         iface->ifname, iface->cross_connect_uplink);
5087                 iface->cross_connect_in_use = 0;
5088         }
5089 }
5090
5091
5092 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
5093 {
5094         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
5095             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
5096             wpa_s->cross_connect_disallowed)
5097                 wpas_p2p_disable_cross_connect(wpa_s);
5098         else
5099                 wpas_p2p_enable_cross_connect(wpa_s);
5100         if (!wpa_s->ap_iface &&
5101             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
5102                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
5103 }
5104
5105
5106 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
5107 {
5108         wpas_p2p_disable_cross_connect(wpa_s);
5109         if (!wpa_s->ap_iface &&
5110             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
5111                                          wpa_s, NULL))
5112                 wpas_p2p_set_group_idle_timeout(wpa_s);
5113 }
5114
5115
5116 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
5117 {
5118         struct wpa_supplicant *iface;
5119
5120         if (!wpa_s->global->cross_connection)
5121                 return;
5122
5123         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
5124                 if (iface == wpa_s)
5125                         continue;
5126                 if (iface->drv_flags &
5127                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
5128                         continue;
5129                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
5130                         continue;
5131
5132                 wpa_s->cross_connect_enabled = 1;
5133                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
5134                            sizeof(wpa_s->cross_connect_uplink));
5135                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
5136                            "%s to %s whenever uplink is available",
5137                            wpa_s->ifname, wpa_s->cross_connect_uplink);
5138
5139                 if (iface->ap_iface || iface->current_ssid == NULL ||
5140                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
5141                     iface->cross_connect_disallowed ||
5142                     iface->wpa_state != WPA_COMPLETED)
5143                         break;
5144
5145                 wpa_s->cross_connect_in_use = 1;
5146                 wpa_msg(wpa_s->parent, MSG_INFO,
5147                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
5148                         wpa_s->ifname, wpa_s->cross_connect_uplink);
5149                 break;
5150         }
5151 }
5152
5153
5154 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
5155 {
5156         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
5157             !wpa_s->p2p_in_provisioning)
5158                 return 0; /* not P2P client operation */
5159
5160         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
5161                    "session overlap");
5162         if (wpa_s != wpa_s->parent)
5163                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
5164
5165         if (wpa_s->global->p2p)
5166                 p2p_group_formation_failed(wpa_s->global->p2p);
5167
5168         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5169                              wpa_s->parent, NULL);
5170
5171         wpas_group_formation_completed(wpa_s, 0);
5172         return 1;
5173 }
5174
5175
5176 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
5177 {
5178         struct p2p_channels chan;
5179
5180         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
5181                 return;
5182
5183         os_memset(&chan, 0, sizeof(chan));
5184         if (wpas_p2p_setup_channels(wpa_s, &chan)) {
5185                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
5186                            "channel list");
5187                 return;
5188         }
5189
5190         p2p_update_channel_list(wpa_s->global->p2p, &chan);
5191 }
5192
5193
5194 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
5195                                      struct wpa_scan_results *scan_res)
5196 {
5197         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
5198 }
5199
5200
5201 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
5202 {
5203         struct wpa_global *global = wpa_s->global;
5204         int found = 0;
5205         const u8 *peer;
5206
5207         if (global->p2p == NULL)
5208                 return -1;
5209
5210         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
5211
5212         if (wpa_s->pending_interface_name[0] &&
5213             !is_zero_ether_addr(wpa_s->pending_interface_addr))
5214                 found = 1;
5215
5216         peer = p2p_get_go_neg_peer(global->p2p);
5217         if (peer) {
5218                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
5219                            MACSTR, MAC2STR(peer));
5220                 p2p_unauthorize(global->p2p, peer);
5221                 found = 1;
5222         }
5223
5224         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
5225                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
5226                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
5227                 found = 1;
5228         }
5229
5230         if (wpa_s->pending_pd_before_join) {
5231                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
5232                 wpa_s->pending_pd_before_join = 0;
5233                 found = 1;
5234         }
5235
5236         wpas_p2p_stop_find(wpa_s);
5237
5238         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5239                 if (wpa_s == global->p2p_group_formation &&
5240                     (wpa_s->p2p_in_provisioning ||
5241                      wpa_s->parent->pending_interface_type ==
5242                      WPA_IF_P2P_CLIENT)) {
5243                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
5244                                    "formation found - cancelling",
5245                                    wpa_s->ifname);
5246                         found = 1;
5247                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5248                                              wpa_s->parent, NULL);
5249                         if (wpa_s->p2p_in_provisioning) {
5250                                 wpas_group_formation_completed(wpa_s, 0);
5251                                 break;
5252                         }
5253                         wpas_p2p_group_delete(wpa_s,
5254                                               P2P_GROUP_REMOVAL_REQUESTED);
5255                         break;
5256                 }
5257         }
5258
5259         if (!found) {
5260                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
5261                 return -1;
5262         }
5263
5264         return 0;
5265 }
5266
5267
5268 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
5269 {
5270         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
5271                 return;
5272
5273         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
5274                    "being available anymore");
5275         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
5276 }
5277
5278
5279 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
5280                                    int freq_24, int freq_5, int freq_overall)
5281 {
5282         struct p2p_data *p2p = wpa_s->global->p2p;
5283         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5284                 return;
5285         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
5286 }
5287
5288
5289 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
5290 {
5291         u8 peer[ETH_ALEN];
5292         struct p2p_data *p2p = wpa_s->global->p2p;
5293
5294         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5295                 return -1;
5296
5297         if (hwaddr_aton(addr, peer))
5298                 return -1;
5299
5300         return p2p_unauthorize(p2p, peer);
5301 }
5302
5303
5304 /**
5305  * wpas_p2p_disconnect - Disconnect from a P2P Group
5306  * @wpa_s: Pointer to wpa_supplicant data
5307  * Returns: 0 on success, -1 on failure
5308  *
5309  * This can be used to disconnect from a group in which the local end is a P2P
5310  * Client or to end a P2P Group in case the local end is the Group Owner. If a
5311  * virtual network interface was created for this group, that interface will be
5312  * removed. Otherwise, only the configured P2P group network will be removed
5313  * from the interface.
5314  */
5315 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
5316 {
5317
5318         if (wpa_s == NULL)
5319                 return -1;
5320
5321         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
5322                 -1 : 0;
5323 }
5324
5325
5326 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
5327 {
5328         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5329                 return 0;
5330
5331         return p2p_in_progress(wpa_s->global->p2p);
5332 }
5333
5334
5335 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
5336                               struct wpa_ssid *ssid)
5337 {
5338         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
5339             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5340                                  wpa_s->parent, NULL) > 0) {
5341                 /**
5342                  * Remove the network by scheduling the group formation
5343                  * timeout to happen immediately. The teardown code
5344                  * needs to be scheduled to run asynch later so that we
5345                  * don't delete data from under ourselves unexpectedly.
5346                  * Calling wpas_p2p_group_formation_timeout directly
5347                  * causes a series of crashes in WPS failure scenarios.
5348                  */
5349                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
5350                            "P2P group network getting removed");
5351                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
5352                                        wpa_s->parent, NULL);
5353         }
5354 }
5355
5356
5357 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
5358                                           const u8 *addr, const u8 *ssid,
5359                                           size_t ssid_len)
5360 {
5361         struct wpa_ssid *s;
5362         size_t i;
5363
5364         for (s = wpa_s->conf->ssid; s; s = s->next) {
5365                 if (s->disabled != 2)
5366                         continue;
5367                 if (ssid &&
5368                     (ssid_len != s->ssid_len ||
5369                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
5370                         continue;
5371                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
5372                         return s; /* peer is GO in the persistent group */
5373                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
5374                         continue;
5375                 for (i = 0; i < s->num_p2p_clients; i++) {
5376                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
5377                                       addr, ETH_ALEN) == 0)
5378                                 return s; /* peer is P2P client in persistent
5379                                            * group */
5380                 }
5381         }
5382
5383         return NULL;
5384 }
5385
5386
5387 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
5388                                        const u8 *addr)
5389 {
5390         if (addr == NULL)
5391                 return;
5392         wpas_p2p_add_persistent_group_client(wpa_s, addr);
5393 }
5394
5395
5396 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
5397                                         int group_added)
5398 {
5399         struct wpa_supplicant *group = wpa_s;
5400         if (wpa_s->global->p2p_group_formation)
5401                 group = wpa_s->global->p2p_group_formation;
5402         wpa_s = wpa_s->parent;
5403         offchannel_send_action_done(wpa_s);
5404         if (group_added)
5405                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
5406         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
5407         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
5408                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
5409                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
5410                          wpa_s->p2p_persistent_id,
5411                          wpa_s->p2p_pd_before_go_neg,
5412                          wpa_s->p2p_go_ht40);
5413 }
5414
5415
5416 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
5417 {
5418         if (!wpa_s->p2p_fallback_to_go_neg ||
5419             wpa_s->p2p_in_provisioning <= 5)
5420                 return 0;
5421
5422         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
5423                 return 0; /* peer operating as a GO */
5424
5425         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
5426                 "fallback to GO Negotiation");
5427         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
5428
5429         return 1;
5430 }
5431
5432
5433 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
5434 {
5435         const char *rn, *rn2;
5436         struct wpa_supplicant *ifs;
5437
5438         if (wpa_s->wpa_state > WPA_SCANNING) {
5439                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
5440                         "concurrent operation",
5441                         P2P_CONCURRENT_SEARCH_DELAY);
5442                 return P2P_CONCURRENT_SEARCH_DELAY;
5443         }
5444
5445         if (!wpa_s->driver->get_radio_name)
5446                 return 0;
5447         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
5448         if (rn == NULL || rn[0] == '\0')
5449                 return 0;
5450
5451         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
5452                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
5453                         continue;
5454
5455                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
5456                 if (!rn2 || os_strcmp(rn, rn2) != 0)
5457                         continue;
5458                 if (ifs->wpa_state > WPA_SCANNING) {
5459                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
5460                                 "delay due to concurrent operation on "
5461                                 "interface %s",
5462                                 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
5463                         return P2P_CONCURRENT_SEARCH_DELAY;
5464                 }
5465         }
5466
5467         return 0;
5468 }