contrib/wpa/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->age, 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                 if (os_strlen(params->passphrase) > 0) {
 800                         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 801                                 "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 802                                 "go_dev_addr=" MACSTR "%s", wpa_s->ifname,
 803                                 wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
 804                                 ssid->frequency, params->passphrase,
 805                                 MAC2STR(wpa_s->global->p2p_dev_addr),
 806                                 params->persistent_group ? " [PERSISTENT]" :
 807                                 "");
 808                 } else {
 809                         char psk[65];
 810                         wpa_snprintf_hex(psk, sizeof(psk), params->psk,
 811                                          sizeof(params->psk));
 812                         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 813                                 "%s GO ssid=\"%s\" freq=%d psk=%s "
 814                                 "go_dev_addr=" MACSTR "%s", wpa_s->ifname,
 815                                 wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
 816                                 ssid->frequency, psk,
 817                                 MAC2STR(wpa_s->global->p2p_dev_addr),
 818                                 params->persistent_group ? " [PERSISTENT]" :
 819                                 "");
 820                 }
 821
 822                 if (params->persistent_group)
 823                         network_id = wpas_p2p_store_persistent_group(
 824                                 wpa_s->parent, ssid,
 825                                 wpa_s->global->p2p_dev_addr);
 826                 if (network_id < 0)
 827                         network_id = ssid->id;
 828                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 829                 wpas_p2p_cross_connect_setup(wpa_s);
 830                 wpas_p2p_set_group_idle_timeout(wpa_s);
 831                 return;
 832         }
 833
 834         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
 835         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
 836                                               params->peer_interface_addr)) {
 837                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
 838                            "filtering");
 839                 return;
 840         }
 841         if (params->wps_method == WPS_PBC)
 842                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
 843                                           params->peer_device_addr);
 844         else if (wpa_s->p2p_pin[0])
 845                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
 846                                           wpa_s->p2p_pin, NULL, 0, 0);
 847         os_free(wpa_s->go_params);
 848         wpa_s->go_params = NULL;
 849 }
 850
 851
 852 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
 853                               struct p2p_go_neg_results *params,
 854                               int group_formation)
 855 {
 856         struct wpa_ssid *ssid;
 857
 858         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
 859         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
 860                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
 861                         "results");
 862                 return;
 863         }
 864
 865         ssid = wpa_config_add_network(wpa_s->conf);
 866         if (ssid == NULL) {
 867                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
 868                 return;
 869         }
 870
 871         wpa_s->show_group_started = 0;
 872
 873         wpa_config_set_network_defaults(ssid);
 874         ssid->temporary = 1;
 875         ssid->p2p_group = 1;
 876         ssid->p2p_persistent_group = params->persistent_group;
 877         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
 878                 WPAS_MODE_P2P_GO;
 879         ssid->frequency = params->freq;
 880         ssid->ht40 = params->ht40;
 881         ssid->ssid = os_zalloc(params->ssid_len + 1);
 882         if (ssid->ssid) {
 883                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
 884                 ssid->ssid_len = params->ssid_len;
 885         }
 886         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 887         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 888         ssid->proto = WPA_PROTO_RSN;
 889         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 890         if (os_strlen(params->passphrase) > 0) {
 891                 ssid->passphrase = os_strdup(params->passphrase);
 892                 if (ssid->passphrase == NULL) {
 893                         wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to copy "
 894                                 "passphrase for GO");
 895                         wpa_config_remove_network(wpa_s->conf, ssid->id);
 896                         return;
 897                 }
 898         } else
 899                 ssid->passphrase = NULL;
 900         ssid->psk_set = params->psk_set;
 901         if (ssid->psk_set)
 902                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
 903         else if (ssid->passphrase)
 904                 wpa_config_update_psk(ssid);
 905         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
 906
 907         wpa_s->ap_configured_cb = p2p_go_configured;
 908         wpa_s->ap_configured_cb_ctx = wpa_s;
 909         wpa_s->ap_configured_cb_data = wpa_s->go_params;
 910         wpa_s->connect_without_scan = ssid;
 911         wpa_s->reassociate = 1;
 912         wpa_s->disconnected = 0;
 913         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
 914                 "start GO)");
 915         wpa_supplicant_req_scan(wpa_s, 0, 0);
 916 }
 917
 918
 919 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
 920                                   const struct wpa_supplicant *src)
 921 {
 922         struct wpa_config *d;
 923         const struct wpa_config *s;
 924
 925         d = dst->conf;
 926         s = src->conf;
 927
 928 #define C(n) if (s->n) d->n = os_strdup(s->n)
 929         C(device_name);
 930         C(manufacturer);
 931         C(model_name);
 932         C(model_number);
 933         C(serial_number);
 934         C(config_methods);
 935 #undef C
 936
 937         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
 938         os_memcpy(d->sec_device_type, s->sec_device_type,
 939                   sizeof(d->sec_device_type));
 940         d->num_sec_device_types = s->num_sec_device_types;
 941
 942         d->p2p_group_idle = s->p2p_group_idle;
 943         d->p2p_intra_bss = s->p2p_intra_bss;
 944         d->persistent_reconnect = s->persistent_reconnect;
 945         d->max_num_sta = s->max_num_sta;
 946         d->pbc_in_m1 = s->pbc_in_m1;
 947 }
 948
 949
 950 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 951                                         enum wpa_driver_if_type type)
 952 {
 953         char ifname[120], force_ifname[120];
 954
 955         if (wpa_s->pending_interface_name[0]) {
 956                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
 957                            "- skip creation of a new one");
 958                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
 959                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
 960                                    "unknown?! ifname='%s'",
 961                                    wpa_s->pending_interface_name);
 962                         return -1;
 963                 }
 964                 return 0;
 965         }
 966
 967         os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname,
 968                     wpa_s->p2p_group_idx);
 969         if (os_strlen(ifname) >= IFNAMSIZ &&
 970             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
 971                 /* Try to avoid going over the IFNAMSIZ length limit */
 972                 os_snprintf(ifname, sizeof(ifname), "p2p-%d",
 973                             wpa_s->p2p_group_idx);
 974         }
 975         force_ifname[0] = '\0';
 976
 977         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
 978                    ifname);
 979         wpa_s->p2p_group_idx++;
 980
 981         wpa_s->pending_interface_type = type;
 982         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
 983                            wpa_s->pending_interface_addr, NULL) < 0) {
 984                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
 985                            "interface");
 986                 return -1;
 987         }
 988
 989         if (force_ifname[0]) {
 990                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
 991                            force_ifname);
 992                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
 993                            sizeof(wpa_s->pending_interface_name));
 994         } else
 995                 os_strlcpy(wpa_s->pending_interface_name, ifname,
 996                            sizeof(wpa_s->pending_interface_name));
 997         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
 998                    MACSTR, wpa_s->pending_interface_name,
 999                    MAC2STR(wpa_s->pending_interface_addr));
1000
1001         return 0;
1002 }
1003
1004
1005 static void wpas_p2p_remove_pending_group_interface(
1006         struct wpa_supplicant *wpa_s)
1007 {
1008         if (!wpa_s->pending_interface_name[0] ||
1009             is_zero_ether_addr(wpa_s->pending_interface_addr))
1010                 return; /* No pending virtual interface */
1011
1012         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1013                    wpa_s->pending_interface_name);
1014         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1015                           wpa_s->pending_interface_name);
1016         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1017         wpa_s->pending_interface_name[0] = '\0';
1018 }
1019
1020
1021 static struct wpa_supplicant *
1022 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1023 {
1024         struct wpa_interface iface;
1025         struct wpa_supplicant *group_wpa_s;
1026
1027         if (!wpa_s->pending_interface_name[0]) {
1028                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1029                 if (!wpas_p2p_create_iface(wpa_s))
1030                         return NULL;
1031                 /*
1032                  * Something has forced us to remove the pending interface; try
1033                  * to create a new one and hope for the best that we will get
1034                  * the same local address.
1035                  */
1036                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1037                                                  WPA_IF_P2P_CLIENT) < 0)
1038                         return NULL;
1039         }
1040
1041         os_memset(&iface, 0, sizeof(iface));
1042         iface.ifname = wpa_s->pending_interface_name;
1043         iface.driver = wpa_s->driver->name;
1044         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1045         iface.driver_param = wpa_s->conf->driver_param;
1046         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1047         if (group_wpa_s == NULL) {
1048                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1049                            "wpa_supplicant interface");
1050                 return NULL;
1051         }
1052         wpa_s->pending_interface_name[0] = '\0';
1053         group_wpa_s->parent = wpa_s;
1054         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1055                 P2P_GROUP_INTERFACE_CLIENT;
1056         wpa_s->global->p2p_group_formation = group_wpa_s;
1057
1058         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1059
1060         return group_wpa_s;
1061 }
1062
1063
1064 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1065                                              void *timeout_ctx)
1066 {
1067         struct wpa_supplicant *wpa_s = eloop_ctx;
1068         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1069         if (wpa_s->global->p2p)
1070                 p2p_group_formation_failed(wpa_s->global->p2p);
1071         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1072                 wpa_drv_p2p_group_formation_failed(wpa_s);
1073         wpas_group_formation_completed(wpa_s, 0);
1074 }
1075
1076
1077 void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1078 {
1079         struct wpa_supplicant *wpa_s = ctx;
1080
1081         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1082                 wpa_drv_cancel_remain_on_channel(wpa_s);
1083                 wpa_s->off_channel_freq = 0;
1084                 wpa_s->roc_waiting_drv_freq = 0;
1085         }
1086
1087         if (res->status) {
1088                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d",
1089                         res->status);
1090                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1091                 wpas_p2p_remove_pending_group_interface(wpa_s);
1092                 return;
1093         }
1094
1095         if (wpa_s->p2p_go_ht40)
1096                 res->ht40 = 1;
1097
1098         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS);
1099         wpas_notify_p2p_go_neg_completed(wpa_s, res);
1100
1101         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1102                 struct wpa_ssid *ssid;
1103                 ssid = wpa_config_get_network(wpa_s->conf,
1104                                               wpa_s->p2p_persistent_id);
1105                 if (ssid && ssid->disabled == 2 &&
1106                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1107                         size_t len = os_strlen(ssid->passphrase);
1108                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1109                                    "on requested persistent group");
1110                         os_memcpy(res->passphrase, ssid->passphrase, len);
1111                         res->passphrase[len] = '\0';
1112                 }
1113         }
1114
1115         if (wpa_s->create_p2p_iface) {
1116                 struct wpa_supplicant *group_wpa_s =
1117                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1118                 if (group_wpa_s == NULL) {
1119                         wpas_p2p_remove_pending_group_interface(wpa_s);
1120                         return;
1121                 }
1122                 if (group_wpa_s != wpa_s) {
1123                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1124                                   sizeof(group_wpa_s->p2p_pin));
1125                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1126                 }
1127                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1128                 wpa_s->pending_interface_name[0] = '\0';
1129                 group_wpa_s->p2p_in_provisioning = 1;
1130
1131                 if (res->role_go)
1132                         wpas_start_wps_go(group_wpa_s, res, 1);
1133                 else
1134                         wpas_start_wps_enrollee(group_wpa_s, res);
1135         } else {
1136                 wpa_s->p2p_in_provisioning = 1;
1137                 wpa_s->global->p2p_group_formation = wpa_s;
1138
1139                 if (res->role_go)
1140                         wpas_start_wps_go(wpa_s, res, 1);
1141                 else
1142                         wpas_start_wps_enrollee(ctx, res);
1143         }
1144
1145         wpa_s->p2p_long_listen = 0;
1146         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1147
1148         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1149         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1150                                (res->peer_config_timeout % 100) * 10000,
1151                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1152 }
1153
1154
1155 void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1156 {
1157         struct wpa_supplicant *wpa_s = ctx;
1158         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1159                 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1160
1161         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1162 }
1163
1164
1165 void wpas_dev_found(void *ctx, const u8 *addr,
1166                     const struct p2p_peer_info *info,
1167                     int new_device)
1168 {
1169 #ifndef CONFIG_NO_STDOUT_DEBUG
1170         struct wpa_supplicant *wpa_s = ctx;
1171         char devtype[WPS_DEV_TYPE_BUFSIZE];
1172
1173         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1174                 " p2p_dev_addr=" MACSTR
1175                 " pri_dev_type=%s name='%s' config_methods=0x%x "
1176                 "dev_capab=0x%x group_capab=0x%x",
1177                 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1178                 wps_dev_type_bin2str(info->pri_dev_type, devtype,
1179                                      sizeof(devtype)),
1180                 info->device_name, info->config_methods,
1181                 info->dev_capab, info->group_capab);
1182 #endif /* CONFIG_NO_STDOUT_DEBUG */
1183
1184         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1185 }
1186
1187
1188 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1189 {
1190         struct wpa_supplicant *wpa_s = ctx;
1191
1192         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1193                 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1194
1195         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1196 }
1197
1198
1199 static int wpas_start_listen(void *ctx, unsigned int freq,
1200                              unsigned int duration,
1201                              const struct wpabuf *probe_resp_ie)
1202 {
1203         struct wpa_supplicant *wpa_s = ctx;
1204
1205         wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL);
1206
1207         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1208                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1209                            "report received Probe Request frames");
1210                 return -1;
1211         }
1212
1213         wpa_s->pending_listen_freq = freq;
1214         wpa_s->pending_listen_duration = duration;
1215
1216         if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) {
1217                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1218                            "to remain on channel (%u MHz) for Listen "
1219                            "state", freq);
1220                 wpa_s->pending_listen_freq = 0;
1221                 return -1;
1222         }
1223         wpa_s->off_channel_freq = 0;
1224         wpa_s->roc_waiting_drv_freq = freq;
1225
1226         return 0;
1227 }
1228
1229
1230 static void wpas_stop_listen(void *ctx)
1231 {
1232         struct wpa_supplicant *wpa_s = ctx;
1233         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1234                 wpa_drv_cancel_remain_on_channel(wpa_s);
1235                 wpa_s->off_channel_freq = 0;
1236                 wpa_s->roc_waiting_drv_freq = 0;
1237         }
1238         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1239         wpa_drv_probe_req_report(wpa_s, 0);
1240 }
1241
1242
1243 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1244 {
1245         struct wpa_supplicant *wpa_s = ctx;
1246         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1247 }
1248
1249
1250 /*
1251  * DNS Header section is used only to calculate compression pointers, so the
1252  * contents of this data does not matter, but the length needs to be reserved
1253  * in the virtual packet.
1254  */
1255 #define DNS_HEADER_LEN 12
1256
1257 /*
1258  * 27-octet in-memory packet from P2P specification containing two implied
1259  * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN
1260  */
1261 #define P2P_SD_IN_MEMORY_LEN 27
1262
1263 static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start,
1264                                        u8 **spos, const u8 *end)
1265 {
1266         while (*spos < end) {
1267                 u8 val = ((*spos)[0] & 0xc0) >> 6;
1268                 int len;
1269
1270                 if (val == 1 || val == 2) {
1271                         /* These are reserved values in RFC 1035 */
1272                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1273                                    "sequence starting with 0x%x", val);
1274                         return -1;
1275                 }
1276
1277                 if (val == 3) {
1278                         u16 offset;
1279                         u8 *spos_tmp;
1280
1281                         /* Offset */
1282                         if (*spos + 2 > end) {
1283                                 wpa_printf(MSG_DEBUG, "P2P: No room for full "
1284                                            "DNS offset field");
1285                                 return -1;
1286                         }
1287
1288                         offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1];
1289                         if (offset >= *spos - start) {
1290                                 wpa_printf(MSG_DEBUG, "P2P: Invalid DNS "
1291                                            "pointer offset %u", offset);
1292                                 return -1;
1293                         }
1294
1295                         (*spos) += 2;
1296                         spos_tmp = start + offset;
1297                         return p2p_sd_dns_uncompress_label(upos, uend, start,
1298                                                            &spos_tmp,
1299                                                            *spos - 2);
1300                 }
1301
1302                 /* Label */
1303                 len = (*spos)[0] & 0x3f;
1304                 if (len == 0)
1305                         return 0;
1306
1307                 (*spos)++;
1308                 if (*spos + len > end) {
1309                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1310                                    "sequence - no room for label with length "
1311                                    "%u", len);
1312                         return -1;
1313                 }
1314
1315                 if (*upos + len + 2 > uend)
1316                         return -2;
1317
1318                 os_memcpy(*upos, *spos, len);
1319                 *spos += len;
1320                 *upos += len;
1321                 (*upos)[0] = '.';
1322                 (*upos)++;
1323                 (*upos)[0] = '\0';
1324         }
1325
1326         return 0;
1327 }
1328
1329
1330 /* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet.
1331  * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is
1332  * not large enough */
1333 static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg,
1334                                  size_t msg_len, size_t offset)
1335 {
1336         /* 27-octet in-memory packet from P2P specification */
1337         const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01"
1338                 "\x04_udp\xC0\x11\x00\x0C\x00\x01";
1339         u8 *tmp, *end, *spos;
1340         char *upos, *uend;
1341         int ret = 0;
1342
1343         if (buf_len < 2)
1344                 return -1;
1345         if (offset > msg_len)
1346                 return -1;
1347
1348         tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len);
1349         if (tmp == NULL)
1350                 return -1;
1351         spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN;
1352         end = spos + msg_len;
1353         spos += offset;
1354
1355         os_memset(tmp, 0, DNS_HEADER_LEN);
1356         os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN);
1357         os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len);
1358
1359         upos = buf;
1360         uend = buf + buf_len;
1361
1362         ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end);
1363         if (ret) {
1364                 os_free(tmp);
1365                 return ret;
1366         }
1367
1368         if (upos == buf) {
1369                 upos[0] = '.';
1370                 upos[1] = '\0';
1371         } else if (upos[-1] == '.')
1372                 upos[-1] = '\0';
1373
1374         os_free(tmp);
1375         return 0;
1376 }
1377
1378
1379 static struct p2p_srv_bonjour *
1380 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1381                              const struct wpabuf *query)
1382 {
1383         struct p2p_srv_bonjour *bsrv;
1384         size_t len;
1385
1386         len = wpabuf_len(query);
1387         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1388                          struct p2p_srv_bonjour, list) {
1389                 if (len == wpabuf_len(bsrv->query) &&
1390                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1391                               len) == 0)
1392                         return bsrv;
1393         }
1394         return NULL;
1395 }
1396
1397
1398 static struct p2p_srv_upnp *
1399 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
1400                           const char *service)
1401 {
1402         struct p2p_srv_upnp *usrv;
1403
1404         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1405                          struct p2p_srv_upnp, list) {
1406                 if (version == usrv->version &&
1407                     os_strcmp(service, usrv->service) == 0)
1408                         return usrv;
1409         }
1410         return NULL;
1411 }
1412
1413
1414 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
1415                                         u8 srv_trans_id)
1416 {
1417         u8 *len_pos;
1418
1419         if (wpabuf_tailroom(resp) < 5)
1420                 return;
1421
1422         /* Length (to be filled) */
1423         len_pos = wpabuf_put(resp, 2);
1424         wpabuf_put_u8(resp, srv_proto);
1425         wpabuf_put_u8(resp, srv_trans_id);
1426         /* Status Code */
1427         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
1428         /* Response Data: empty */
1429         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1430 }
1431
1432
1433 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
1434                                 struct wpabuf *resp, u8 srv_trans_id)
1435 {
1436         struct p2p_srv_bonjour *bsrv;
1437         u8 *len_pos;
1438
1439         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
1440
1441         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1442                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1443                 return;
1444         }
1445
1446         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1447                          struct p2p_srv_bonjour, list) {
1448                 if (wpabuf_tailroom(resp) <
1449                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
1450                         return;
1451                 /* Length (to be filled) */
1452                 len_pos = wpabuf_put(resp, 2);
1453                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1454                 wpabuf_put_u8(resp, srv_trans_id);
1455                 /* Status Code */
1456                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1457                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1458                                   wpabuf_head(bsrv->resp),
1459                                   wpabuf_len(bsrv->resp));
1460                 /* Response Data */
1461                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1462                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1463                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1464                              2);
1465         }
1466 }
1467
1468
1469 static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query,
1470                                size_t query_len)
1471 {
1472         char str_rx[256], str_srv[256];
1473
1474         if (query_len < 3 || wpabuf_len(bsrv->query) < 3)
1475                 return 0; /* Too short to include DNS Type and Version */
1476         if (os_memcmp(query + query_len - 3,
1477                       wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3,
1478                       3) != 0)
1479                 return 0; /* Mismatch in DNS Type or Version */
1480         if (query_len == wpabuf_len(bsrv->query) &&
1481             os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0)
1482                 return 1; /* Binary match */
1483
1484         if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3,
1485                                   0))
1486                 return 0; /* Failed to uncompress query */
1487         if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv),
1488                                   wpabuf_head(bsrv->query),
1489                                   wpabuf_len(bsrv->query) - 3, 0))
1490                 return 0; /* Failed to uncompress service */
1491
1492         return os_strcmp(str_rx, str_srv) == 0;
1493 }
1494
1495
1496 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
1497                                 struct wpabuf *resp, u8 srv_trans_id,
1498                                 const u8 *query, size_t query_len)
1499 {
1500         struct p2p_srv_bonjour *bsrv;
1501         u8 *len_pos;
1502         int matches = 0;
1503
1504         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
1505                           query, query_len);
1506         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1507                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1508                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
1509                                             srv_trans_id);
1510                 return;
1511         }
1512
1513         if (query_len == 0) {
1514                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1515                 return;
1516         }
1517
1518         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1519                          struct p2p_srv_bonjour, list) {
1520                 if (!match_bonjour_query(bsrv, query, query_len))
1521                         continue;
1522
1523                 if (wpabuf_tailroom(resp) <
1524                     5 + query_len + wpabuf_len(bsrv->resp))
1525                         return;
1526
1527                 matches++;
1528
1529                 /* Length (to be filled) */
1530                 len_pos = wpabuf_put(resp, 2);
1531                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1532                 wpabuf_put_u8(resp, srv_trans_id);
1533
1534                 /* Status Code */
1535                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1536                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1537                                   wpabuf_head(bsrv->resp),
1538                                   wpabuf_len(bsrv->resp));
1539
1540                 /* Response Data */
1541                 wpabuf_put_data(resp, query, query_len); /* Key */
1542                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1543
1544                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1545         }
1546
1547         if (matches == 0) {
1548                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
1549                            "available");
1550                 if (wpabuf_tailroom(resp) < 5)
1551                         return;
1552
1553                 /* Length (to be filled) */
1554                 len_pos = wpabuf_put(resp, 2);
1555                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1556                 wpabuf_put_u8(resp, srv_trans_id);
1557
1558                 /* Status Code */
1559                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1560                 /* Response Data: empty */
1561                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1562                              2);
1563         }
1564 }
1565
1566
1567 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
1568                              struct wpabuf *resp, u8 srv_trans_id)
1569 {
1570         struct p2p_srv_upnp *usrv;
1571         u8 *len_pos;
1572
1573         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
1574
1575         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1576                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1577                 return;
1578         }
1579
1580         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1581                          struct p2p_srv_upnp, list) {
1582                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
1583                         return;
1584
1585                 /* Length (to be filled) */
1586                 len_pos = wpabuf_put(resp, 2);
1587                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
1588                 wpabuf_put_u8(resp, srv_trans_id);
1589
1590                 /* Status Code */
1591                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1592                 /* Response Data */
1593                 wpabuf_put_u8(resp, usrv->version);
1594                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1595                            usrv->service);
1596                 wpabuf_put_str(resp, usrv->service);
1597                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1598                              2);
1599         }
1600 }
1601
1602
1603 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
1604                              struct wpabuf *resp, u8 srv_trans_id,
1605                              const u8 *query, size_t query_len)
1606 {
1607         struct p2p_srv_upnp *usrv;
1608         u8 *len_pos;
1609         u8 version;
1610         char *str;
1611         int count = 0;
1612
1613         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
1614                           query, query_len);
1615
1616         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1617                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1618                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
1619                                             srv_trans_id);
1620                 return;
1621         }
1622
1623         if (query_len == 0) {
1624                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1625                 return;
1626         }
1627
1628         if (wpabuf_tailroom(resp) < 5)
1629                 return;
1630
1631         /* Length (to be filled) */
1632         len_pos = wpabuf_put(resp, 2);
1633         wpabuf_put_u8(resp, P2P_SERV_UPNP);
1634         wpabuf_put_u8(resp, srv_trans_id);
1635
1636         version = query[0];
1637         str = os_malloc(query_len);
1638         if (str == NULL)
1639                 return;
1640         os_memcpy(str, query + 1, query_len - 1);
1641         str[query_len - 1] = '\0';
1642
1643         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1644                          struct p2p_srv_upnp, list) {
1645                 if (version != usrv->version)
1646                         continue;
1647
1648                 if (os_strcmp(str, "ssdp:all") != 0 &&
1649                     os_strstr(usrv->service, str) == NULL)
1650                         continue;
1651
1652                 if (wpabuf_tailroom(resp) < 2)
1653                         break;
1654                 if (count == 0) {
1655                         /* Status Code */
1656                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1657                         /* Response Data */
1658                         wpabuf_put_u8(resp, version);
1659                 } else
1660                         wpabuf_put_u8(resp, ',');
1661
1662                 count++;
1663
1664                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1665                            usrv->service);
1666                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
1667                         break;
1668                 wpabuf_put_str(resp, usrv->service);
1669         }
1670         os_free(str);
1671
1672         if (count == 0) {
1673                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
1674                            "available");
1675                 /* Status Code */
1676                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1677                 /* Response Data: empty */
1678         }
1679
1680         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1681 }
1682
1683
1684 #ifdef CONFIG_WIFI_DISPLAY
1685 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
1686                             struct wpabuf *resp, u8 srv_trans_id,
1687                             const u8 *query, size_t query_len)
1688 {
1689         const u8 *pos;
1690         u8 role;
1691         u8 *len_pos;
1692
1693         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
1694
1695         if (!wpa_s->global->wifi_display) {
1696                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
1697                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
1698                                             srv_trans_id);
1699                 return;
1700         }
1701
1702         if (query_len < 1) {
1703                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
1704                            "Role");
1705                 return;
1706         }
1707
1708         if (wpabuf_tailroom(resp) < 5)
1709                 return;
1710
1711         pos = query;
1712         role = *pos++;
1713         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
1714
1715         /* TODO: role specific handling */
1716
1717         /* Length (to be filled) */
1718         len_pos = wpabuf_put(resp, 2);
1719         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
1720         wpabuf_put_u8(resp, srv_trans_id);
1721         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
1722
1723         while (pos < query + query_len) {
1724                 if (*pos < MAX_WFD_SUBELEMS &&
1725                     wpa_s->global->wfd_subelem[*pos] &&
1726                     wpabuf_tailroom(resp) >=
1727                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
1728                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
1729                                    "subelement %u", *pos);
1730                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
1731                 }
1732                 pos++;
1733         }
1734
1735         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1736 }
1737 #endif /* CONFIG_WIFI_DISPLAY */
1738
1739
1740 void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
1741                      u16 update_indic, const u8 *tlvs, size_t tlvs_len)
1742 {
1743         struct wpa_supplicant *wpa_s = ctx;
1744         const u8 *pos = tlvs;
1745         const u8 *end = tlvs + tlvs_len;
1746         const u8 *tlv_end;
1747         u16 slen;
1748         struct wpabuf *resp;
1749         u8 srv_proto, srv_trans_id;
1750         size_t buf_len;
1751         char *buf;
1752
1753         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
1754                     tlvs, tlvs_len);
1755         buf_len = 2 * tlvs_len + 1;
1756         buf = os_malloc(buf_len);
1757         if (buf) {
1758                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1759                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
1760                              MACSTR " %u %u %s",
1761                              freq, MAC2STR(sa), dialog_token, update_indic,
1762                              buf);
1763                 os_free(buf);
1764         }
1765
1766         if (wpa_s->p2p_sd_over_ctrl_iface) {
1767                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1768                                            update_indic, tlvs, tlvs_len);
1769                 return; /* to be processed by an external program */
1770         }
1771
1772         resp = wpabuf_alloc(10000);
1773         if (resp == NULL)
1774                 return;
1775
1776         while (pos + 1 < end) {
1777                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
1778                 slen = WPA_GET_LE16(pos);
1779                 pos += 2;
1780                 if (pos + slen > end || slen < 2) {
1781                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
1782                                    "length");
1783                         wpabuf_free(resp);
1784                         return;
1785                 }
1786                 tlv_end = pos + slen;
1787
1788                 srv_proto = *pos++;
1789                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1790                            srv_proto);
1791                 srv_trans_id = *pos++;
1792                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1793                            srv_trans_id);
1794
1795                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
1796                             pos, tlv_end - pos);
1797
1798
1799                 if (wpa_s->force_long_sd) {
1800                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
1801                                    "response");
1802                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1803                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1804                         goto done;
1805                 }
1806
1807                 switch (srv_proto) {
1808                 case P2P_SERV_ALL_SERVICES:
1809                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
1810                                    "for all services");
1811                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
1812                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1813                                 wpa_printf(MSG_DEBUG, "P2P: No service "
1814                                            "discovery protocols available");
1815                                 wpas_sd_add_proto_not_avail(
1816                                         resp, P2P_SERV_ALL_SERVICES,
1817                                         srv_trans_id);
1818                                 break;
1819                         }
1820                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1821                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1822                         break;
1823                 case P2P_SERV_BONJOUR:
1824                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
1825                                             pos, tlv_end - pos);
1826                         break;
1827                 case P2P_SERV_UPNP:
1828                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
1829                                          pos, tlv_end - pos);
1830                         break;
1831 #ifdef CONFIG_WIFI_DISPLAY
1832                 case P2P_SERV_WIFI_DISPLAY:
1833                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
1834                                         pos, tlv_end - pos);
1835                         break;
1836 #endif /* CONFIG_WIFI_DISPLAY */
1837                 default:
1838                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
1839                                    "protocol %u", srv_proto);
1840                         wpas_sd_add_proto_not_avail(resp, srv_proto,
1841                                                     srv_trans_id);
1842                         break;
1843                 }
1844
1845                 pos = tlv_end;
1846         }
1847
1848 done:
1849         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1850                                    update_indic, tlvs, tlvs_len);
1851
1852         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
1853
1854         wpabuf_free(resp);
1855 }
1856
1857
1858 void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
1859                       const u8 *tlvs, size_t tlvs_len)
1860 {
1861         struct wpa_supplicant *wpa_s = ctx;
1862         const u8 *pos = tlvs;
1863         const u8 *end = tlvs + tlvs_len;
1864         const u8 *tlv_end;
1865         u16 slen;
1866         size_t buf_len;
1867         char *buf;
1868
1869         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
1870                     tlvs, tlvs_len);
1871         if (tlvs_len > 1500) {
1872                 /* TODO: better way for handling this */
1873                 wpa_msg_ctrl(wpa_s, MSG_INFO,
1874                              P2P_EVENT_SERV_DISC_RESP MACSTR
1875                              " %u <long response: %u bytes>",
1876                              MAC2STR(sa), update_indic,
1877                              (unsigned int) tlvs_len);
1878         } else {
1879                 buf_len = 2 * tlvs_len + 1;
1880                 buf = os_malloc(buf_len);
1881                 if (buf) {
1882                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1883                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1884                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
1885                                      MAC2STR(sa), update_indic, buf);
1886                         os_free(buf);
1887                 }
1888         }
1889
1890         while (pos < end) {
1891                 u8 srv_proto, srv_trans_id, status;
1892
1893                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
1894                 slen = WPA_GET_LE16(pos);
1895                 pos += 2;
1896                 if (pos + slen > end || slen < 3) {
1897                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
1898                                    "length");
1899                         return;
1900                 }
1901                 tlv_end = pos + slen;
1902
1903                 srv_proto = *pos++;
1904                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1905                            srv_proto);
1906                 srv_trans_id = *pos++;
1907                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1908                            srv_trans_id);
1909                 status = *pos++;
1910                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
1911                            status);
1912
1913                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
1914                             pos, tlv_end - pos);
1915
1916                 pos = tlv_end;
1917         }
1918
1919         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
1920 }
1921
1922
1923 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
1924                         const struct wpabuf *tlvs)
1925 {
1926         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1927                 return wpa_drv_p2p_sd_request(wpa_s, dst, tlvs);
1928         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1929                 return 0;
1930         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
1931 }
1932
1933
1934 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
1935                              u8 version, const char *query)
1936 {
1937         struct wpabuf *tlvs;
1938         u64 ret;
1939
1940         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
1941         if (tlvs == NULL)
1942                 return 0;
1943         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
1944         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
1945         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
1946         wpabuf_put_u8(tlvs, version);
1947         wpabuf_put_str(tlvs, query);
1948         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
1949         wpabuf_free(tlvs);
1950         return ret;
1951 }
1952
1953
1954 #ifdef CONFIG_WIFI_DISPLAY
1955
1956 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
1957                                    const struct wpabuf *tlvs)
1958 {
1959         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1960                 return 0;
1961         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1962                 return 0;
1963         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
1964 }
1965
1966
1967 #define MAX_WFD_SD_SUBELEMS 20
1968
1969 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
1970                                 const char *subelems)
1971 {
1972         u8 *len;
1973         const char *pos;
1974         int val;
1975         int count = 0;
1976
1977         len = wpabuf_put(tlvs, 2);
1978         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
1979         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
1980
1981         wpabuf_put_u8(tlvs, role);
1982
1983         pos = subelems;
1984         while (*pos) {
1985                 val = atoi(pos);
1986                 if (val >= 0 && val < 256) {
1987                         wpabuf_put_u8(tlvs, val);
1988                         count++;
1989                         if (count == MAX_WFD_SD_SUBELEMS)
1990                                 break;
1991                 }
1992                 pos = os_strchr(pos + 1, ',');
1993                 if (pos == NULL)
1994                         break;
1995                 pos++;
1996         }
1997
1998         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
1999 }
2000
2001
2002 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
2003                                      const u8 *dst, const char *role)
2004 {
2005         struct wpabuf *tlvs;
2006         u64 ret;
2007         const char *subelems;
2008         u8 id = 1;
2009
2010         subelems = os_strchr(role, ' ');
2011         if (subelems == NULL)
2012                 return 0;
2013         subelems++;
2014
2015         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
2016         if (tlvs == NULL)
2017                 return 0;
2018
2019         if (os_strstr(role, "[source]"))
2020                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
2021         if (os_strstr(role, "[pri-sink]"))
2022                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
2023         if (os_strstr(role, "[sec-sink]"))
2024                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
2025         if (os_strstr(role, "[source+sink]"))
2026                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
2027
2028         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
2029         wpabuf_free(tlvs);
2030         return ret;
2031 }
2032
2033 #endif /* CONFIG_WIFI_DISPLAY */
2034
2035
2036 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
2037 {
2038         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
2039                 return wpa_drv_p2p_sd_cancel_request(wpa_s, req);
2040         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2041                 return -1;
2042         return p2p_sd_cancel_request(wpa_s->global->p2p,
2043                                      (void *) (uintptr_t) req);
2044 }
2045
2046
2047 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
2048                           const u8 *dst, u8 dialog_token,
2049                           const struct wpabuf *resp_tlvs)
2050 {
2051         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2052                 wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token,
2053                                         resp_tlvs);
2054                 return;
2055         }
2056         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2057                 return;
2058         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
2059                         resp_tlvs);
2060 }
2061
2062
2063 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
2064 {
2065         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2066                 wpa_drv_p2p_service_update(wpa_s);
2067                 return;
2068         }
2069         if (wpa_s->global->p2p)
2070                 p2p_sd_service_update(wpa_s->global->p2p);
2071 }
2072
2073
2074 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
2075 {
2076         dl_list_del(&bsrv->list);
2077         wpabuf_free(bsrv->query);
2078         wpabuf_free(bsrv->resp);
2079         os_free(bsrv);
2080 }
2081
2082
2083 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
2084 {
2085         dl_list_del(&usrv->list);
2086         os_free(usrv->service);
2087         os_free(usrv);
2088 }
2089
2090
2091 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
2092 {
2093         struct p2p_srv_bonjour *bsrv, *bn;
2094         struct p2p_srv_upnp *usrv, *un;
2095
2096         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
2097                               struct p2p_srv_bonjour, list)
2098                 wpas_p2p_srv_bonjour_free(bsrv);
2099
2100         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
2101                               struct p2p_srv_upnp, list)
2102                 wpas_p2p_srv_upnp_free(usrv);
2103
2104         wpas_p2p_sd_service_update(wpa_s);
2105 }
2106
2107
2108 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
2109                                  struct wpabuf *query, struct wpabuf *resp)
2110 {
2111         struct p2p_srv_bonjour *bsrv;
2112
2113         bsrv = os_zalloc(sizeof(*bsrv));
2114         if (bsrv == NULL)
2115                 return -1;
2116         bsrv->query = query;
2117         bsrv->resp = resp;
2118         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
2119
2120         wpas_p2p_sd_service_update(wpa_s);
2121         return 0;
2122 }
2123
2124
2125 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
2126                                  const struct wpabuf *query)
2127 {
2128         struct p2p_srv_bonjour *bsrv;
2129
2130         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
2131         if (bsrv == NULL)
2132                 return -1;
2133         wpas_p2p_srv_bonjour_free(bsrv);
2134         wpas_p2p_sd_service_update(wpa_s);
2135         return 0;
2136 }
2137
2138
2139 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2140                               const char *service)
2141 {
2142         struct p2p_srv_upnp *usrv;
2143
2144         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2145                 return 0; /* Already listed */
2146         usrv = os_zalloc(sizeof(*usrv));
2147         if (usrv == NULL)
2148                 return -1;
2149         usrv->version = version;
2150         usrv->service = os_strdup(service);
2151         if (usrv->service == NULL) {
2152                 os_free(usrv);
2153                 return -1;
2154         }
2155         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2156
2157         wpas_p2p_sd_service_update(wpa_s);
2158         return 0;
2159 }
2160
2161
2162 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2163                               const char *service)
2164 {
2165         struct p2p_srv_upnp *usrv;
2166
2167         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2168         if (usrv == NULL)
2169                 return -1;
2170         wpas_p2p_srv_upnp_free(usrv);
2171         wpas_p2p_sd_service_update(wpa_s);
2172         return 0;
2173 }
2174
2175
2176 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2177                                          const u8 *peer, const char *params,
2178                                          unsigned int generated_pin)
2179 {
2180         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s",
2181                 MAC2STR(peer), generated_pin, params);
2182 }
2183
2184
2185 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2186                                         const u8 *peer, const char *params)
2187 {
2188         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s",
2189                 MAC2STR(peer), params);
2190 }
2191
2192
2193 void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2194                         const u8 *dev_addr, const u8 *pri_dev_type,
2195                         const char *dev_name, u16 supp_config_methods,
2196                         u8 dev_capab, u8 group_capab, const u8 *group_id,
2197                         size_t group_id_len)
2198 {
2199         struct wpa_supplicant *wpa_s = ctx;
2200         char devtype[WPS_DEV_TYPE_BUFSIZE];
2201         char params[300];
2202         u8 empty_dev_type[8];
2203         unsigned int generated_pin = 0;
2204         struct wpa_supplicant *group = NULL;
2205
2206         if (group_id) {
2207                 for (group = wpa_s->global->ifaces; group; group = group->next)
2208                 {
2209                         struct wpa_ssid *s = group->current_ssid;
2210                         if (s != NULL &&
2211                             s->mode == WPAS_MODE_P2P_GO &&
2212                             group_id_len - ETH_ALEN == s->ssid_len &&
2213                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2214                                       s->ssid_len) == 0)
2215                                 break;
2216                 }
2217         }
2218
2219         if (pri_dev_type == NULL) {
2220                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2221                 pri_dev_type = empty_dev_type;
2222         }
2223         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2224                     " pri_dev_type=%s name='%s' config_methods=0x%x "
2225                     "dev_capab=0x%x group_capab=0x%x%s%s",
2226                     MAC2STR(dev_addr),
2227                     wps_dev_type_bin2str(pri_dev_type, devtype,
2228                                          sizeof(devtype)),
2229                     dev_name, supp_config_methods, dev_capab, group_capab,
2230                     group ? " group=" : "",
2231                     group ? group->ifname : "");
2232         params[sizeof(params) - 1] = '\0';
2233
2234         if (config_methods & WPS_CONFIG_DISPLAY) {
2235                 generated_pin = wps_generate_pin();
2236                 wpas_prov_disc_local_display(wpa_s, peer, params,
2237                                              generated_pin);
2238         } else if (config_methods & WPS_CONFIG_KEYPAD)
2239                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2240         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2241                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR
2242                         "%s", MAC2STR(peer), params);
2243
2244         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2245                                             P2P_PROV_DISC_SUCCESS,
2246                                             config_methods, generated_pin);
2247 }
2248
2249
2250 void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2251 {
2252         struct wpa_supplicant *wpa_s = ctx;
2253         unsigned int generated_pin = 0;
2254         char params[20];
2255
2256         if (wpa_s->pending_pd_before_join &&
2257             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2258              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2259                 wpa_s->pending_pd_before_join = 0;
2260                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2261                            "join-existing-group operation");
2262                 wpas_p2p_join_start(wpa_s);
2263                 return;
2264         }
2265
2266         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2267             wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2268                 os_snprintf(params, sizeof(params), " peer_go=%d",
2269                             wpa_s->pending_pd_use == AUTO_PD_JOIN);
2270         else
2271                 params[0] = '\0';
2272
2273         if (config_methods & WPS_CONFIG_DISPLAY)
2274                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2275         else if (config_methods & WPS_CONFIG_KEYPAD) {
2276                 generated_pin = wps_generate_pin();
2277                 wpas_prov_disc_local_display(wpa_s, peer, params,
2278                                              generated_pin);
2279         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2280                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR
2281                         "%s", MAC2STR(peer), params);
2282
2283         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2284                                             P2P_PROV_DISC_SUCCESS,
2285                                             config_methods, generated_pin);
2286 }
2287
2288
2289 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2290                                 enum p2p_prov_disc_status status)
2291 {
2292         struct wpa_supplicant *wpa_s = ctx;
2293
2294         if (wpa_s->p2p_fallback_to_go_neg) {
2295                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2296                         "failed - fall back to GO Negotiation");
2297                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2298                 return;
2299         }
2300
2301         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2302                 wpa_s->pending_pd_before_join = 0;
2303                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2304                            "join-existing-group operation (no ACK for PD "
2305                            "Req attempts)");
2306                 wpas_p2p_join_start(wpa_s);
2307                 return;
2308         }
2309
2310         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2311                 " p2p_dev_addr=" MACSTR " status=%d",
2312                 MAC2STR(peer), status);
2313
2314         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2315                                             status, 0, 0);
2316 }
2317
2318
2319 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2320                                   const u8 *go_dev_addr, const u8 *ssid,
2321                                   size_t ssid_len, int *go, u8 *group_bssid,
2322                                   int *force_freq, int persistent_group)
2323 {
2324         struct wpa_supplicant *wpa_s = ctx;
2325         struct wpa_ssid *s;
2326         u8 cur_bssid[ETH_ALEN];
2327         int res;
2328         struct wpa_supplicant *grp;
2329
2330         if (!persistent_group) {
2331                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2332                            " to join an active group", MAC2STR(sa));
2333                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2334                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2335                      == 0 ||
2336                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2337                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2338                                    "authorized invitation");
2339                         goto accept_inv;
2340                 }
2341                 /*
2342                  * Do not accept the invitation automatically; notify user and
2343                  * request approval.
2344                  */
2345                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2346         }
2347
2348         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2349         if (grp) {
2350                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2351                            "running persistent group");
2352                 if (*go)
2353                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2354                 goto accept_inv;
2355         }
2356
2357         if (!wpa_s->conf->persistent_reconnect)
2358                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2359
2360         for (s = wpa_s->conf->ssid; s; s = s->next) {
2361                 if (s->disabled == 2 &&
2362                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2363                     s->ssid_len == ssid_len &&
2364                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2365                         break;
2366         }
2367
2368         if (!s) {
2369                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2370                            " requested reinvocation of an unknown group",
2371                            MAC2STR(sa));
2372                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2373         }
2374
2375         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2376                 *go = 1;
2377                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2378                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2379                                    "interface is already in use - reject "
2380                                    "invitation");
2381                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2382                 }
2383                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2384         } else if (s->mode == WPAS_MODE_P2P_GO) {
2385                 *go = 1;
2386                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2387                 {
2388                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2389                                    "interface address for the group");
2390                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2391                 }
2392                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2393                           ETH_ALEN);
2394         }
2395
2396 accept_inv:
2397         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 &&
2398             wpa_s->assoc_freq) {
2399                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2400                            "the channel we are already using");
2401                 *force_freq = wpa_s->assoc_freq;
2402         }
2403
2404         res = wpa_drv_shared_freq(wpa_s);
2405         if (res > 0) {
2406                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2407                            "with the channel we are already using on a "
2408                            "shared interface");
2409                 *force_freq = res;
2410         }
2411
2412         return P2P_SC_SUCCESS;
2413 }
2414
2415
2416 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2417                                      const u8 *ssid, size_t ssid_len,
2418                                      const u8 *go_dev_addr, u8 status,
2419                                      int op_freq)
2420 {
2421         struct wpa_supplicant *wpa_s = ctx;
2422         struct wpa_ssid *s;
2423
2424         for (s = wpa_s->conf->ssid; s; s = s->next) {
2425                 if (s->disabled == 2 &&
2426                     s->ssid_len == ssid_len &&
2427                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2428                         break;
2429         }
2430
2431         if (status == P2P_SC_SUCCESS) {
2432                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2433                            " was accepted; op_freq=%d MHz",
2434                            MAC2STR(sa), op_freq);
2435                 if (s) {
2436                         int go = s->mode == WPAS_MODE_P2P_GO;
2437                         wpas_p2p_group_add_persistent(
2438                                 wpa_s, s, go, go ? op_freq : 0, 0);
2439                 } else if (bssid) {
2440                         wpa_s->user_initiated_pd = 0;
2441                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2442                                       wpa_s->p2p_wps_method, 0);
2443                 }
2444                 return;
2445         }
2446
2447         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2448                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2449                            " was rejected (status %u)", MAC2STR(sa), status);
2450                 return;
2451         }
2452
2453         if (!s) {
2454                 if (bssid) {
2455                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2456                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2457                                 " bssid=" MACSTR " unknown-network",
2458                                 MAC2STR(sa), MAC2STR(go_dev_addr),
2459                                 MAC2STR(bssid));
2460                 } else {
2461                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2462                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2463                                 " unknown-network",
2464                                 MAC2STR(sa), MAC2STR(go_dev_addr));
2465                 }
2466                 return;
2467         }
2468
2469         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR
2470                 " persistent=%d", MAC2STR(sa), s->id);
2471 }
2472
2473
2474 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid)
2475 {
2476         struct wpa_supplicant *wpa_s = ctx;
2477         struct wpa_ssid *ssid;
2478
2479         if (bssid) {
2480                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2481                         "status=%d " MACSTR,
2482                         status, MAC2STR(bssid));
2483         } else {
2484                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2485                         "status=%d ", status);
2486         }
2487         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2488
2489         if (wpa_s->pending_invite_ssid_id == -1)
2490                 return; /* Invitation to active group */
2491
2492         if (status != P2P_SC_SUCCESS) {
2493                 wpas_p2p_remove_pending_group_interface(wpa_s);
2494                 return;
2495         }
2496
2497         ssid = wpa_config_get_network(wpa_s->conf,
2498                                       wpa_s->pending_invite_ssid_id);
2499         if (ssid == NULL) {
2500                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2501                            "data matching with invitation");
2502                 return;
2503         }
2504
2505         /*
2506          * The peer could have missed our ctrl::ack frame for Invitation
2507          * Response and continue retransmitting the frame. To reduce the
2508          * likelihood of the peer not getting successful TX status for the
2509          * Invitation Response frame, wait a short time here before starting
2510          * the persistent group so that we will remain on the current channel to
2511          * acknowledge any possible retransmission from the peer.
2512          */
2513         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
2514                 "starting persistent group");
2515         os_sleep(0, 50000);
2516
2517         wpas_p2p_group_add_persistent(wpa_s, ssid,
2518                                       ssid->mode == WPAS_MODE_P2P_GO,
2519                                       wpa_s->p2p_persistent_go_freq,
2520                                       wpa_s->p2p_go_ht40);
2521 }
2522
2523
2524 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
2525                                     unsigned int freq)
2526 {
2527         unsigned int i;
2528
2529         if (global->p2p_disallow_freq == NULL)
2530                 return 0;
2531
2532         for (i = 0; i < global->num_p2p_disallow_freq; i++) {
2533                 if (freq >= global->p2p_disallow_freq[i].min &&
2534                     freq <= global->p2p_disallow_freq[i].max)
2535                         return 1;
2536         }
2537
2538         return 0;
2539 }
2540
2541
2542 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
2543 {
2544         reg->channel[reg->channels] = chan;
2545         reg->channels++;
2546 }
2547
2548
2549 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
2550                                      struct p2p_channels *chan)
2551 {
2552         int i, cla = 0;
2553
2554         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
2555                    "band");
2556
2557         /* Operating class 81 - 2.4 GHz band channels 1..13 */
2558         chan->reg_class[cla].reg_class = 81;
2559         chan->reg_class[cla].channels = 0;
2560         for (i = 0; i < 11; i++) {
2561                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
2562                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
2563         }
2564         if (chan->reg_class[cla].channels)
2565                 cla++;
2566
2567         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
2568                    "band");
2569
2570         /* Operating class 115 - 5 GHz, channels 36-48 */
2571         chan->reg_class[cla].reg_class = 115;
2572         chan->reg_class[cla].channels = 0;
2573         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
2574                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
2575         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
2576                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
2577         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
2578                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
2579         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
2580                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
2581         if (chan->reg_class[cla].channels)
2582                 cla++;
2583
2584         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
2585                    "band");
2586
2587         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
2588         chan->reg_class[cla].reg_class = 124;
2589         chan->reg_class[cla].channels = 0;
2590         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
2591                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
2592         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
2593                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
2594         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
2595                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
2596         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
2597                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
2598         if (chan->reg_class[cla].channels)
2599                 cla++;
2600
2601         chan->reg_classes = cla;
2602         return 0;
2603 }
2604
2605
2606 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
2607                                           u16 num_modes,
2608                                           enum hostapd_hw_mode mode)
2609 {
2610         u16 i;
2611
2612         for (i = 0; i < num_modes; i++) {
2613                 if (modes[i].mode == mode)
2614                         return &modes[i];
2615         }
2616
2617         return NULL;
2618 }
2619
2620
2621 static int has_channel(struct wpa_global *global,
2622                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
2623 {
2624         int i;
2625         unsigned int freq;
2626
2627         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
2628                 chan * 5;
2629         if (wpas_p2p_disallowed_freq(global, freq))
2630                 return 0;
2631
2632         for (i = 0; i < mode->num_channels; i++) {
2633                 if (mode->channels[i].chan == chan) {
2634                         if (flags)
2635                                 *flags = mode->channels[i].flag;
2636                         return !(mode->channels[i].flag &
2637                                  (HOSTAPD_CHAN_DISABLED |
2638                                   HOSTAPD_CHAN_PASSIVE_SCAN |
2639                                   HOSTAPD_CHAN_NO_IBSS |
2640                                   HOSTAPD_CHAN_RADAR));
2641                 }
2642         }
2643
2644         return 0;
2645 }
2646
2647
2648 struct p2p_oper_class_map {
2649         enum hostapd_hw_mode mode;
2650         u8 op_class;
2651         u8 min_chan;
2652         u8 max_chan;
2653         u8 inc;
2654         enum { BW20, BW40PLUS, BW40MINUS } bw;
2655 };
2656
2657 static struct p2p_oper_class_map op_class[] = {
2658         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
2659 #if 0 /* Do not enable HT40 on 2 GHz for now */
2660         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
2661         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
2662 #endif
2663         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
2664         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
2665         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
2666         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
2667         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
2668         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
2669         { -1, 0, 0, 0, 0, BW20 }
2670 };
2671
2672
2673 static int wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
2674                                    struct hostapd_hw_modes *mode,
2675                                    u8 channel, u8 bw)
2676 {
2677         int flag;
2678
2679         if (!has_channel(wpa_s->global, mode, channel, &flag))
2680                 return -1;
2681         if (bw == BW40MINUS &&
2682             (!(flag & HOSTAPD_CHAN_HT40MINUS) ||
2683              !has_channel(wpa_s->global, mode, channel - 4, NULL)))
2684                 return 0;
2685         if (bw == BW40PLUS &&
2686             (!(flag & HOSTAPD_CHAN_HT40PLUS) ||
2687              !has_channel(wpa_s->global, mode, channel + 4, NULL)))
2688                 return 0;
2689         return 1;
2690 }
2691
2692
2693 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
2694                                    struct p2p_channels *chan)
2695 {
2696         struct hostapd_hw_modes *mode;
2697         int cla, op;
2698
2699         if (wpa_s->hw.modes == NULL) {
2700                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
2701                            "of all supported channels; assume dualband "
2702                            "support");
2703                 return wpas_p2p_default_channels(wpa_s, chan);
2704         }
2705
2706         cla = 0;
2707
2708         for (op = 0; op_class[op].op_class; op++) {
2709                 struct p2p_oper_class_map *o = &op_class[op];
2710                 u8 ch;
2711                 struct p2p_reg_class *reg = NULL;
2712
2713                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
2714                 if (mode == NULL)
2715                         continue;
2716                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2717                         if (wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw) < 1)
2718                                 continue;
2719                         if (reg == NULL) {
2720                                 wpa_printf(MSG_DEBUG, "P2P: Add operating "
2721                                            "class %u", o->op_class);
2722                                 reg = &chan->reg_class[cla];
2723                                 cla++;
2724                                 reg->reg_class = o->op_class;
2725                         }
2726                         reg->channel[reg->channels] = ch;
2727                         reg->channels++;
2728                 }
2729                 if (reg) {
2730                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
2731                                     reg->channel, reg->channels);
2732                 }
2733         }
2734
2735         chan->reg_classes = cla;
2736
2737         return 0;
2738 }
2739
2740
2741 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
2742                            struct hostapd_hw_modes *mode, u8 channel)
2743 {
2744         int op, ret;
2745
2746         for (op = 0; op_class[op].op_class; op++) {
2747                 struct p2p_oper_class_map *o = &op_class[op];
2748                 u8 ch;
2749
2750                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2751                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
2752                             o->bw == BW20 || ch != channel)
2753                                 continue;
2754                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
2755                         if (ret < 0)
2756                                 continue;
2757                         else if (ret > 0)
2758                                 return (o->bw == BW40MINUS) ? -1 : 1;
2759                         else
2760                                 return 0;
2761                 }
2762         }
2763         return 0;
2764 }
2765
2766
2767 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
2768                         size_t buf_len)
2769 {
2770         struct wpa_supplicant *wpa_s = ctx;
2771
2772         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2773                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
2774                         break;
2775         }
2776         if (wpa_s == NULL)
2777                 return -1;
2778
2779         return wpa_drv_get_noa(wpa_s, buf, buf_len);
2780 }
2781
2782
2783 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
2784 {
2785         struct wpa_supplicant *wpa_s = ctx;
2786
2787         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2788                 struct wpa_ssid *ssid = wpa_s->current_ssid;
2789                 if (ssid == NULL)
2790                         continue;
2791                 if (ssid->mode != WPAS_MODE_INFRA)
2792                         continue;
2793                 if (wpa_s->wpa_state != WPA_COMPLETED &&
2794                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
2795                         continue;
2796                 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
2797                         return 1;
2798         }
2799
2800         return 0;
2801 }
2802
2803
2804 /**
2805  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
2806  * @global: Pointer to global data from wpa_supplicant_init()
2807  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2808  * Returns: 0 on success, -1 on failure
2809  */
2810 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
2811 {
2812         struct p2p_config p2p;
2813         unsigned int r;
2814         int i;
2815
2816         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
2817                 return 0;
2818
2819         if (global->p2p)
2820                 return 0;
2821
2822         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2823                 struct p2p_params params;
2824
2825                 wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management");
2826                 os_memset(&params, 0, sizeof(params));
2827                 params.dev_name = wpa_s->conf->device_name;
2828                 os_memcpy(params.pri_dev_type, wpa_s->conf->device_type,
2829                           WPS_DEV_TYPE_LEN);
2830                 params.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2831                 os_memcpy(params.sec_dev_type,
2832                           wpa_s->conf->sec_device_type,
2833                           params.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2834
2835                 if (wpa_drv_p2p_set_params(wpa_s, &params) < 0)
2836                         return -1;
2837
2838                 return 0;
2839         }
2840
2841         os_memset(&p2p, 0, sizeof(p2p));
2842         p2p.msg_ctx = wpa_s;
2843         p2p.cb_ctx = wpa_s;
2844         p2p.p2p_scan = wpas_p2p_scan;
2845         p2p.send_action = wpas_send_action;
2846         p2p.send_action_done = wpas_send_action_done;
2847         p2p.go_neg_completed = wpas_go_neg_completed;
2848         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
2849         p2p.dev_found = wpas_dev_found;
2850         p2p.dev_lost = wpas_dev_lost;
2851         p2p.start_listen = wpas_start_listen;
2852         p2p.stop_listen = wpas_stop_listen;
2853         p2p.send_probe_resp = wpas_send_probe_resp;
2854         p2p.sd_request = wpas_sd_request;
2855         p2p.sd_response = wpas_sd_response;
2856         p2p.prov_disc_req = wpas_prov_disc_req;
2857         p2p.prov_disc_resp = wpas_prov_disc_resp;
2858         p2p.prov_disc_fail = wpas_prov_disc_fail;
2859         p2p.invitation_process = wpas_invitation_process;
2860         p2p.invitation_received = wpas_invitation_received;
2861         p2p.invitation_result = wpas_invitation_result;
2862         p2p.get_noa = wpas_get_noa;
2863         p2p.go_connected = wpas_go_connected;
2864
2865         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
2866         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
2867         p2p.dev_name = wpa_s->conf->device_name;
2868         p2p.manufacturer = wpa_s->conf->manufacturer;
2869         p2p.model_name = wpa_s->conf->model_name;
2870         p2p.model_number = wpa_s->conf->model_number;
2871         p2p.serial_number = wpa_s->conf->serial_number;
2872         if (wpa_s->wps) {
2873                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
2874                 p2p.config_methods = wpa_s->wps->config_methods;
2875         }
2876
2877         if (wpa_s->conf->p2p_listen_reg_class &&
2878             wpa_s->conf->p2p_listen_channel) {
2879                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
2880                 p2p.channel = wpa_s->conf->p2p_listen_channel;
2881         } else {
2882                 p2p.reg_class = 81;
2883                 /*
2884                  * Pick one of the social channels randomly as the listen
2885                  * channel.
2886                  */
2887                 os_get_random((u8 *) &r, sizeof(r));
2888                 p2p.channel = 1 + (r % 3) * 5;
2889         }
2890         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
2891
2892         if (wpa_s->conf->p2p_oper_reg_class &&
2893             wpa_s->conf->p2p_oper_channel) {
2894                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
2895                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
2896                 p2p.cfg_op_channel = 1;
2897                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
2898                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2899
2900         } else {
2901                 p2p.op_reg_class = 81;
2902                 /*
2903                  * Use random operation channel from (1, 6, 11) if no other
2904                  * preference is indicated.
2905                  */
2906                 os_get_random((u8 *) &r, sizeof(r));
2907                 p2p.op_channel = 1 + (r % 3) * 5;
2908                 p2p.cfg_op_channel = 0;
2909                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
2910                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2911         }
2912         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
2913                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
2914                 p2p.country[2] = 0x04;
2915         } else
2916                 os_memcpy(p2p.country, "XX\x04", 3);
2917
2918         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) {
2919                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
2920                            "channel list");
2921                 return -1;
2922         }
2923
2924         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
2925                   WPS_DEV_TYPE_LEN);
2926
2927         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2928         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
2929                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2930
2931         p2p.concurrent_operations = !!(wpa_s->drv_flags &
2932                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
2933
2934         p2p.max_peers = 100;
2935
2936         if (wpa_s->conf->p2p_ssid_postfix) {
2937                 p2p.ssid_postfix_len =
2938                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
2939                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
2940                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
2941                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
2942                           p2p.ssid_postfix_len);
2943         }
2944
2945         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
2946
2947         p2p.max_listen = wpa_s->max_remain_on_chan;
2948
2949         global->p2p = p2p_init(&p2p);
2950         if (global->p2p == NULL)
2951                 return -1;
2952         global->p2p_init_wpa_s = wpa_s;
2953
2954         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
2955                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
2956                         continue;
2957                 p2p_add_wps_vendor_extension(
2958                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
2959         }
2960
2961         return 0;
2962 }
2963
2964
2965 /**
2966  * wpas_p2p_deinit - Deinitialize per-interface P2P data
2967  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2968  *
2969  * This function deinitialize per-interface P2P data.
2970  */
2971 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
2972 {
2973         if (wpa_s->driver && wpa_s->drv_priv)
2974                 wpa_drv_probe_req_report(wpa_s, 0);
2975
2976         if (wpa_s->go_params) {
2977                 /* Clear any stored provisioning info */
2978                 p2p_clear_provisioning_info(
2979                         wpa_s->global->p2p,
2980                         wpa_s->go_params->peer_device_addr);
2981         }
2982
2983         os_free(wpa_s->go_params);
2984         wpa_s->go_params = NULL;
2985         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2986         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2987         wpa_s->p2p_long_listen = 0;
2988         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2989         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
2990         wpas_p2p_remove_pending_group_interface(wpa_s);
2991
2992         /* TODO: remove group interface from the driver if this wpa_s instance
2993          * is on top of a P2P group interface */
2994 }
2995
2996
2997 /**
2998  * wpas_p2p_deinit_global - Deinitialize global P2P module
2999  * @global: Pointer to global data from wpa_supplicant_init()
3000  *
3001  * This function deinitializes the global (per device) P2P module.
3002  */
3003 void wpas_p2p_deinit_global(struct wpa_global *global)
3004 {
3005         struct wpa_supplicant *wpa_s, *tmp;
3006
3007         wpa_s = global->ifaces;
3008         if (wpa_s)
3009                 wpas_p2p_service_flush(wpa_s);
3010
3011         if (global->p2p == NULL)
3012                 return;
3013
3014         /* Remove remaining P2P group interfaces */
3015         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
3016                 wpa_s = wpa_s->next;
3017         while (wpa_s) {
3018                 tmp = global->ifaces;
3019                 while (tmp &&
3020                        (tmp == wpa_s ||
3021                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
3022                         tmp = tmp->next;
3023                 }
3024                 if (tmp == NULL)
3025                         break;
3026                 /* Disconnect from the P2P group and deinit the interface */
3027                 wpas_p2p_disconnect(tmp);
3028         }
3029
3030         /*
3031          * Deinit GO data on any possibly remaining interface (if main
3032          * interface is used as GO).
3033          */
3034         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3035                 if (wpa_s->ap_iface)
3036                         wpas_p2p_group_deinit(wpa_s);
3037         }
3038
3039         p2p_deinit(global->p2p);
3040         global->p2p = NULL;
3041         global->p2p_init_wpa_s = NULL;
3042 }
3043
3044
3045 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
3046 {
3047         if (wpa_s->conf->p2p_no_group_iface)
3048                 return 0; /* separate interface disabled per configuration */
3049         if (wpa_s->drv_flags &
3050             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
3051              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
3052                 return 1; /* P2P group requires a new interface in every case
3053                            */
3054         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
3055                 return 0; /* driver does not support concurrent operations */
3056         if (wpa_s->global->ifaces->next)
3057                 return 1; /* more that one interface already in use */
3058         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
3059                 return 1; /* this interface is already in use */
3060         return 0;
3061 }
3062
3063
3064 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
3065                                  const u8 *peer_addr,
3066                                  enum p2p_wps_method wps_method,
3067                                  int go_intent, const u8 *own_interface_addr,
3068                                  unsigned int force_freq, int persistent_group,
3069                                  struct wpa_ssid *ssid, unsigned int pref_freq)
3070 {
3071         if (persistent_group && wpa_s->conf->persistent_reconnect)
3072                 persistent_group = 2;
3073
3074         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
3075                 return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method,
3076                                            go_intent, own_interface_addr,
3077                                            force_freq, persistent_group);
3078         }
3079
3080         /*
3081          * Increase GO config timeout if HT40 is used since it takes some time
3082          * to scan channels for coex purposes before the BSS can be started.
3083          */
3084         p2p_set_config_timeout(wpa_s->global->p2p,
3085                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
3086
3087         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
3088                            go_intent, own_interface_addr, force_freq,
3089                            persistent_group, ssid ? ssid->ssid : NULL,
3090                            ssid ? ssid->ssid_len : 0,
3091                            wpa_s->p2p_pd_before_go_neg, pref_freq);
3092 }
3093
3094
3095 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
3096                                 const u8 *peer_addr,
3097                                 enum p2p_wps_method wps_method,
3098                                 int go_intent, const u8 *own_interface_addr,
3099                                 unsigned int force_freq, int persistent_group,
3100                                 struct wpa_ssid *ssid, unsigned int pref_freq)
3101 {
3102         if (persistent_group && wpa_s->conf->persistent_reconnect)
3103                 persistent_group = 2;
3104
3105         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3106                 return -1;
3107
3108         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
3109                              go_intent, own_interface_addr, force_freq,
3110                              persistent_group, ssid ? ssid->ssid : NULL,
3111                              ssid ? ssid->ssid_len : 0, pref_freq);
3112 }
3113
3114
3115 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
3116 {
3117         wpa_s->p2p_join_scan_count++;
3118         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
3119                    wpa_s->p2p_join_scan_count);
3120         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
3121                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
3122                            " for join operationg - stop join attempt",
3123                            MAC2STR(wpa_s->pending_join_iface_addr));
3124                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3125                 if (wpa_s->p2p_auto_pd) {
3126                         wpa_s->p2p_auto_pd = 0;
3127                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3128                                 " p2p_dev_addr=" MACSTR " status=N/A",
3129                                 MAC2STR(wpa_s->pending_join_dev_addr));
3130                         return;
3131                 }
3132                 wpa_msg(wpa_s->parent, MSG_INFO,
3133                         P2P_EVENT_GROUP_FORMATION_FAILURE);
3134         }
3135 }
3136
3137
3138 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
3139 {
3140         struct wpa_supplicant *iface;
3141         int shared_freq;
3142         u8 bssid[ETH_ALEN];
3143
3144         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)
3145                 return 0;
3146
3147         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
3148                 if (!wpas_p2p_create_iface(wpa_s) && iface == wpa_s)
3149                         continue;
3150                 if (iface->current_ssid == NULL || iface->assoc_freq == 0)
3151                         continue;
3152                 if (iface->current_ssid->mode == WPAS_MODE_AP ||
3153                     iface->current_ssid->mode == WPAS_MODE_P2P_GO)
3154                         shared_freq = iface->current_ssid->frequency;
3155                 else if (wpa_drv_get_bssid(iface, bssid) == 0)
3156                         shared_freq = iface->assoc_freq;
3157                 else
3158                         shared_freq = 0;
3159
3160                 if (shared_freq && freq != shared_freq) {
3161                         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - %s "
3162                                    "connected on %d MHz - new connection on "
3163                                    "%d MHz", iface->ifname, shared_freq, freq);
3164                         return 1;
3165                 }
3166         }
3167
3168         shared_freq = wpa_drv_shared_freq(wpa_s);
3169         if (shared_freq > 0 && shared_freq != freq) {
3170                 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - shared "
3171                            "virtual interface connected on %d MHz - new "
3172                            "connection on %d MHz", shared_freq, freq);
3173                 return 1;
3174         }
3175
3176         return 0;
3177 }
3178
3179
3180 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
3181                             const u8 *peer_dev_addr)
3182 {
3183         struct wpa_bss *bss;
3184         int updated;
3185
3186         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
3187         if (bss == NULL)
3188                 return -1;
3189         if (bss->last_update_idx < wpa_s->bss_update_idx) {
3190                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
3191                            "last scan");
3192                 return 0;
3193         }
3194
3195         updated = os_time_before(&wpa_s->p2p_auto_started, &bss->last_update);
3196         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
3197                    "%ld.%06ld (%supdated in last scan)",
3198                    bss->last_update.sec, bss->last_update.usec,
3199                    updated ? "": "not ");
3200
3201         return updated;
3202 }
3203
3204
3205 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
3206                                    struct wpa_scan_results *scan_res)
3207 {
3208         struct wpa_bss *bss;
3209         int freq;
3210         u8 iface_addr[ETH_ALEN];
3211
3212         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3213
3214         if (wpa_s->global->p2p_disabled)
3215                 return;
3216
3217         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
3218                    scan_res ? (int) scan_res->num : -1,
3219                    wpa_s->p2p_auto_join ? "auto_" : "");
3220
3221         if (scan_res)
3222                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
3223
3224         if (wpa_s->p2p_auto_pd) {
3225                 int join = wpas_p2p_peer_go(wpa_s,
3226                                             wpa_s->pending_join_dev_addr);
3227                 if (join == 0 &&
3228                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
3229                         wpa_s->auto_pd_scan_retry++;
3230                         bss = wpa_bss_get_bssid(wpa_s,
3231                                                 wpa_s->pending_join_dev_addr);
3232                         if (bss) {
3233                                 freq = bss->freq;
3234                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
3235                                            "the peer " MACSTR " at %d MHz",
3236                                            wpa_s->auto_pd_scan_retry,
3237                                            MAC2STR(wpa_s->
3238                                                    pending_join_dev_addr),
3239                                            freq);
3240                                 wpas_p2p_join_scan_req(wpa_s, freq);
3241                                 return;
3242                         }
3243                 }
3244
3245                 if (join < 0)
3246                         join = 0;
3247
3248                 wpa_s->p2p_auto_pd = 0;
3249                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
3250                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
3251                            MAC2STR(wpa_s->pending_join_dev_addr), join);
3252                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3253                                       wpa_s->pending_join_dev_addr,
3254                                       wpa_s->pending_pd_config_methods, join,
3255                                       0, wpa_s->user_initiated_pd) < 0) {
3256                         wpa_s->p2p_auto_pd = 0;
3257                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3258                                 " p2p_dev_addr=" MACSTR " status=N/A",
3259                                 MAC2STR(wpa_s->pending_join_dev_addr));
3260                 }
3261                 return;
3262         }
3263
3264         if (wpa_s->p2p_auto_join) {
3265                 int join = wpas_p2p_peer_go(wpa_s,
3266                                             wpa_s->pending_join_dev_addr);
3267                 if (join < 0) {
3268                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
3269                                    "running a GO -> use GO Negotiation");
3270                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
3271                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
3272                                          wpa_s->p2p_persistent_group, 0, 0, 0,
3273                                          wpa_s->p2p_go_intent,
3274                                          wpa_s->p2p_connect_freq,
3275                                          wpa_s->p2p_persistent_id,
3276                                          wpa_s->p2p_pd_before_go_neg,
3277                                          wpa_s->p2p_go_ht40);
3278                         return;
3279                 }
3280
3281                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
3282                            "try to join the group", join ? "" :
3283                            " in older scan");
3284                 if (!join)
3285                         wpa_s->p2p_fallback_to_go_neg = 1;
3286         }
3287
3288         freq = p2p_get_oper_freq(wpa_s->global->p2p,
3289                                  wpa_s->pending_join_iface_addr);
3290         if (freq < 0 &&
3291             p2p_get_interface_addr(wpa_s->global->p2p,
3292                                    wpa_s->pending_join_dev_addr,
3293                                    iface_addr) == 0 &&
3294             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
3295         {
3296                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
3297                            "address for join from " MACSTR " to " MACSTR
3298                            " based on newly discovered P2P peer entry",
3299                            MAC2STR(wpa_s->pending_join_iface_addr),
3300                            MAC2STR(iface_addr));
3301                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
3302                           ETH_ALEN);
3303
3304                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
3305                                          wpa_s->pending_join_iface_addr);
3306         }
3307         if (freq >= 0) {
3308                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3309                            "from P2P peer table: %d MHz", freq);
3310         }
3311         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3312         if (bss) {
3313                 freq = bss->freq;
3314                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3315                            "from BSS table: %d MHz", freq);
3316         }
3317         if (freq > 0) {
3318                 u16 method;
3319
3320                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
3321                         wpa_msg(wpa_s->parent, MSG_INFO,
3322                                 P2P_EVENT_GROUP_FORMATION_FAILURE
3323                                 "reason=FREQ_CONFLICT");
3324                         return;
3325                 }
3326
3327                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
3328                            "prior to joining an existing group (GO " MACSTR
3329                            " freq=%u MHz)",
3330                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
3331                 wpa_s->pending_pd_before_join = 1;
3332
3333                 switch (wpa_s->pending_join_wps_method) {
3334                 case WPS_PIN_DISPLAY:
3335                         method = WPS_CONFIG_KEYPAD;
3336                         break;
3337                 case WPS_PIN_KEYPAD:
3338                         method = WPS_CONFIG_DISPLAY;
3339                         break;
3340                 case WPS_PBC:
3341                         method = WPS_CONFIG_PUSHBUTTON;
3342                         break;
3343                 default:
3344                         method = 0;
3345                         break;
3346                 }
3347
3348                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
3349                                                wpa_s->pending_join_dev_addr) ==
3350                      method)) {
3351                         /*
3352                          * We have already performed provision discovery for
3353                          * joining the group. Proceed directly to join
3354                          * operation without duplicated provision discovery. */
3355                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
3356                                    "with " MACSTR " already done - proceed to "
3357                                    "join",
3358                                    MAC2STR(wpa_s->pending_join_dev_addr));
3359                         wpa_s->pending_pd_before_join = 0;
3360                         goto start;
3361                 }
3362
3363                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3364                                       wpa_s->pending_join_dev_addr, method, 1,
3365                                       freq, wpa_s->user_initiated_pd) < 0) {
3366                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
3367                                    "Discovery Request before joining an "
3368                                    "existing group");
3369                         wpa_s->pending_pd_before_join = 0;
3370                         goto start;
3371                 }
3372                 return;
3373         }
3374
3375         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
3376         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3377         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3378         wpas_p2p_check_join_scan_limit(wpa_s);
3379         return;
3380
3381 start:
3382         /* Start join operation immediately */
3383         wpas_p2p_join_start(wpa_s);
3384 }
3385
3386
3387 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq)
3388 {
3389         int ret;
3390         struct wpa_driver_scan_params params;
3391         struct wpabuf *wps_ie, *ies;
3392         size_t ielen;
3393         int freqs[2] = { 0, 0 };
3394
3395         os_memset(&params, 0, sizeof(params));
3396
3397         /* P2P Wildcard SSID */
3398         params.num_ssids = 1;
3399         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
3400         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
3401
3402         wpa_s->wps->dev.p2p = 1;
3403         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
3404                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
3405                                         NULL);
3406         if (wps_ie == NULL) {
3407                 wpas_p2p_scan_res_join(wpa_s, NULL);
3408                 return;
3409         }
3410
3411         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
3412         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
3413         if (ies == NULL) {
3414                 wpabuf_free(wps_ie);
3415                 wpas_p2p_scan_res_join(wpa_s, NULL);
3416                 return;
3417         }
3418         wpabuf_put_buf(ies, wps_ie);
3419         wpabuf_free(wps_ie);
3420
3421         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
3422
3423         params.p2p_probe = 1;
3424         params.extra_ies = wpabuf_head(ies);
3425         params.extra_ies_len = wpabuf_len(ies);
3426         if (freq > 0) {
3427                 freqs[0] = freq;
3428                 params.freqs = freqs;
3429         }
3430
3431         /*
3432          * Run a scan to update BSS table and start Provision Discovery once
3433          * the new scan results become available.
3434          */
3435         ret = wpa_drv_scan(wpa_s, &params);
3436         if (!ret)
3437                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
3438
3439         wpabuf_free(ies);
3440
3441         if (ret) {
3442                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
3443                            "try again later");
3444                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3445                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3446                 wpas_p2p_check_join_scan_limit(wpa_s);
3447         }
3448 }
3449
3450
3451 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
3452 {
3453         struct wpa_supplicant *wpa_s = eloop_ctx;
3454         wpas_p2p_join_scan_req(wpa_s, 0);
3455 }
3456
3457
3458 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
3459                          const u8 *dev_addr, enum p2p_wps_method wps_method,
3460                          int auto_join)
3461 {
3462         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
3463                    MACSTR " dev " MACSTR ")%s",
3464                    MAC2STR(iface_addr), MAC2STR(dev_addr),
3465                    auto_join ? " (auto_join)" : "");
3466
3467         wpa_s->p2p_auto_pd = 0;
3468         wpa_s->p2p_auto_join = !!auto_join;
3469         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
3470         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
3471         wpa_s->pending_join_wps_method = wps_method;
3472
3473         /* Make sure we are not running find during connection establishment */
3474         wpas_p2p_stop_find(wpa_s);
3475
3476         wpa_s->p2p_join_scan_count = 0;
3477         wpas_p2p_join_scan(wpa_s, NULL);
3478         return 0;
3479 }
3480
3481
3482 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
3483 {
3484         struct wpa_supplicant *group;
3485         struct p2p_go_neg_results res;
3486         struct wpa_bss *bss;
3487
3488         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
3489         if (group == NULL)
3490                 return -1;
3491         if (group != wpa_s) {
3492                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
3493                           sizeof(group->p2p_pin));
3494                 group->p2p_wps_method = wpa_s->p2p_wps_method;
3495         }
3496
3497         group->p2p_in_provisioning = 1;
3498         wpa_s->global->p2p_group_formation = wpa_s;
3499         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
3500
3501         os_memset(&res, 0, sizeof(res));
3502         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
3503                   ETH_ALEN);
3504         res.wps_method = wpa_s->pending_join_wps_method;
3505         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3506         if (bss) {
3507                 res.freq = bss->freq;
3508                 res.ssid_len = bss->ssid_len;
3509                 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
3510         }
3511
3512         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
3513                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
3514                            "starting client");
3515                 wpa_drv_cancel_remain_on_channel(wpa_s);
3516                 wpa_s->off_channel_freq = 0;
3517                 wpa_s->roc_waiting_drv_freq = 0;
3518         }
3519         wpas_start_wps_enrollee(group, &res);
3520
3521         /*
3522          * Allow a longer timeout for join-a-running-group than normal 15
3523          * second group formation timeout since the GO may not have authorized
3524          * our connection yet.
3525          */
3526         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3527         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
3528                                wpa_s, NULL);
3529
3530         return 0;
3531 }
3532
3533
3534 /**
3535  * wpas_p2p_connect - Request P2P Group Formation to be started
3536  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3537  * @peer_addr: Address of the peer P2P Device
3538  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
3539  * @persistent_group: Whether to create a persistent group
3540  * @auto_join: Whether to select join vs. GO Negotiation automatically
3541  * @join: Whether to join an existing group (as a client) instead of starting
3542  *      Group Owner negotiation; @peer_addr is BSSID in that case
3543  * @auth: Whether to only authorize the connection instead of doing that and
3544  *      initiating Group Owner negotiation
3545  * @go_intent: GO Intent or -1 to use default
3546  * @freq: Frequency for the group or 0 for auto-selection
3547  * @persistent_id: Persistent group credentials to use for forcing GO
3548  *      parameters or -1 to generate new values (SSID/passphrase)
3549  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
3550  *      interoperability workaround when initiating group formation
3551  * @ht40: Start GO with 40 MHz channel width
3552  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
3553  *      failure, -2 on failure due to channel not currently available,
3554  *      -3 if forced channel is not supported
3555  */
3556 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3557                      const char *pin, enum p2p_wps_method wps_method,
3558                      int persistent_group, int auto_join, int join, int auth,
3559                      int go_intent, int freq, int persistent_id, int pd,
3560                      int ht40)
3561 {
3562         int force_freq = 0, pref_freq = 0, oper_freq = 0;
3563         u8 bssid[ETH_ALEN];
3564         int ret = 0;
3565         enum wpa_driver_if_type iftype;
3566         const u8 *if_addr;
3567         struct wpa_ssid *ssid = NULL;
3568
3569         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3570                 return -1;
3571
3572         if (persistent_id >= 0) {
3573                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
3574                 if (ssid == NULL || ssid->disabled != 2 ||
3575                     ssid->mode != WPAS_MODE_P2P_GO)
3576                         return -1;
3577         }
3578
3579         if (go_intent < 0)
3580                 go_intent = wpa_s->conf->p2p_go_intent;
3581
3582         if (!auth)
3583                 wpa_s->p2p_long_listen = 0;
3584
3585         wpa_s->p2p_wps_method = wps_method;
3586         wpa_s->p2p_persistent_group = !!persistent_group;
3587         wpa_s->p2p_persistent_id = persistent_id;
3588         wpa_s->p2p_go_intent = go_intent;
3589         wpa_s->p2p_connect_freq = freq;
3590         wpa_s->p2p_fallback_to_go_neg = 0;
3591         wpa_s->p2p_pd_before_go_neg = !!pd;
3592         wpa_s->p2p_go_ht40 = !!ht40;
3593
3594         if (pin)
3595                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
3596         else if (wps_method == WPS_PIN_DISPLAY) {
3597                 ret = wps_generate_pin();
3598                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
3599                             ret);
3600                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
3601                            wpa_s->p2p_pin);
3602         } else
3603                 wpa_s->p2p_pin[0] = '\0';
3604
3605         if (join || auto_join) {
3606                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
3607                 if (auth) {
3608                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
3609                                    "connect a running group from " MACSTR,
3610                                    MAC2STR(peer_addr));
3611                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
3612                         return ret;
3613                 }
3614                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
3615                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
3616                                            iface_addr) < 0) {
3617                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
3618                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
3619                                          dev_addr);
3620                 }
3621                 if (auto_join) {
3622                         os_get_time(&wpa_s->p2p_auto_started);
3623                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
3624                                    "%ld.%06ld",
3625                                    wpa_s->p2p_auto_started.sec,
3626                                    wpa_s->p2p_auto_started.usec);
3627                 }
3628                 wpa_s->user_initiated_pd = 1;
3629                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
3630                                   auto_join) < 0)
3631                         return -1;
3632                 return ret;
3633         }
3634
3635         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3636             wpa_s->assoc_freq)
3637                 oper_freq = wpa_s->assoc_freq;
3638         else {
3639                 oper_freq = wpa_drv_shared_freq(wpa_s);
3640                 if (oper_freq < 0)
3641                         oper_freq = 0;
3642         }
3643
3644         if (freq > 0) {
3645                 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3646                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
3647                                    "(%u MHz) is not supported for P2P uses",
3648                                    freq);
3649                         return -3;
3650                 }
3651
3652                 if (oper_freq > 0 && freq != oper_freq &&
3653                     !(wpa_s->drv_flags &
3654                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3655                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3656                                    "on %u MHz while connected on another "
3657                                    "channel (%u MHz)", freq, oper_freq);
3658                         return -2;
3659                 }
3660                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3661                            "requested channel (%u MHz)", freq);
3662                 force_freq = freq;
3663         } else if (oper_freq > 0 &&
3664                    !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) {
3665                 if (!(wpa_s->drv_flags &
3666                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3667                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3668                                    "while connected on non-P2P supported "
3669                                    "channel (%u MHz)", oper_freq);
3670                         return -2;
3671                 }
3672                 wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
3673                            "(%u MHz) not available for P2P - try to use "
3674                            "another channel", oper_freq);
3675                 force_freq = 0;
3676         } else if (oper_freq > 0 &&
3677                    (wpa_s->drv_flags &
3678                     WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3679                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer the channel we "
3680                            "are already using (%u MHz) on another interface",
3681                            oper_freq);
3682                 pref_freq = oper_freq;
3683         } else if (oper_freq > 0) {
3684                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3685                            "channel we are already using (%u MHz) on another "
3686                            "interface", oper_freq);
3687                 force_freq = oper_freq;
3688         }
3689
3690         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
3691
3692         if (wpa_s->create_p2p_iface) {
3693                 /* Prepare to add a new interface for the group */
3694                 iftype = WPA_IF_P2P_GROUP;
3695                 if (go_intent == 15)
3696                         iftype = WPA_IF_P2P_GO;
3697                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
3698                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3699                                    "interface for the group");
3700                         return -1;
3701                 }
3702
3703                 if_addr = wpa_s->pending_interface_addr;
3704         } else
3705                 if_addr = wpa_s->own_addr;
3706
3707         if (auth) {
3708                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
3709                                          go_intent, if_addr,
3710                                          force_freq, persistent_group, ssid,
3711                                          pref_freq) < 0)
3712                         return -1;
3713                 return ret;
3714         }
3715
3716         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
3717                                   go_intent, if_addr, force_freq,
3718                                   persistent_group, ssid, pref_freq) < 0) {
3719                 if (wpa_s->create_p2p_iface)
3720                         wpas_p2p_remove_pending_group_interface(wpa_s);
3721                 return -1;
3722         }
3723         return ret;
3724 }
3725
3726
3727 /**
3728  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
3729  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3730  * @freq: Frequency of the channel in MHz
3731  * @duration: Duration of the stay on the channel in milliseconds
3732  *
3733  * This callback is called when the driver indicates that it has started the
3734  * requested remain-on-channel duration.
3735  */
3736 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3737                                    unsigned int freq, unsigned int duration)
3738 {
3739         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3740                 return;
3741         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
3742                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
3743                               wpa_s->pending_listen_duration);
3744                 wpa_s->pending_listen_freq = 0;
3745         }
3746 }
3747
3748
3749 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
3750                                  unsigned int timeout)
3751 {
3752         /* Limit maximum Listen state time based on driver limitation. */
3753         if (timeout > wpa_s->max_remain_on_chan)
3754                 timeout = wpa_s->max_remain_on_chan;
3755
3756         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3757                 return wpa_drv_p2p_listen(wpa_s, timeout);
3758
3759         return p2p_listen(wpa_s->global->p2p, timeout);
3760 }
3761
3762
3763 /**
3764  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
3765  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3766  * @freq: Frequency of the channel in MHz
3767  *
3768  * This callback is called when the driver indicates that a remain-on-channel
3769  * operation has been completed, i.e., the duration on the requested channel
3770  * has timed out.
3771  */
3772 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3773                                           unsigned int freq)
3774 {
3775         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
3776                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
3777                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
3778         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3779                 return;
3780         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
3781                 return; /* P2P module started a new operation */
3782         if (offchannel_pending_action_tx(wpa_s))
3783                 return;
3784         if (wpa_s->p2p_long_listen > 0)
3785                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
3786         if (wpa_s->p2p_long_listen > 0) {
3787                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
3788                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
3789         }
3790 }
3791
3792
3793 /**
3794  * wpas_p2p_group_remove - Remove a P2P group
3795  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3796  * @ifname: Network interface name of the group interface or "*" to remove all
3797  *      groups
3798  * Returns: 0 on success, -1 on failure
3799  *
3800  * This function is used to remove a P2P group. This can be used to disconnect
3801  * from a group in which the local end is a P2P Client or to end a P2P Group in
3802  * case the local end is the Group Owner. If a virtual network interface was
3803  * created for this group, that interface will be removed. Otherwise, only the
3804  * configured P2P group network will be removed from the interface.
3805  */
3806 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
3807 {
3808         struct wpa_global *global = wpa_s->global;
3809
3810         if (os_strcmp(ifname, "*") == 0) {
3811                 struct wpa_supplicant *prev;
3812                 wpa_s = global->ifaces;
3813                 while (wpa_s) {
3814                         prev = wpa_s;
3815                         wpa_s = wpa_s->next;
3816                         wpas_p2p_disconnect(prev);
3817                 }
3818                 return 0;
3819         }
3820
3821         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3822                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
3823                         break;
3824         }
3825
3826         return wpas_p2p_disconnect(wpa_s);
3827 }
3828
3829
3830 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
3831                                    struct p2p_go_neg_results *params,
3832                                    int freq, int ht40)
3833 {
3834         u8 bssid[ETH_ALEN];
3835         int res;
3836
3837         os_memset(params, 0, sizeof(*params));
3838         params->role_go = 1;
3839         params->ht40 = ht40;
3840         if (freq) {
3841                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
3842                            "frequency %d MHz", freq);
3843                 params->freq = freq;
3844         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
3845                    wpa_s->conf->p2p_oper_channel >= 1 &&
3846                    wpa_s->conf->p2p_oper_channel <= 11) {
3847                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
3848                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3849                            "frequency %d MHz", params->freq);
3850         } else if (wpa_s->conf->p2p_oper_reg_class == 115 ||
3851                    wpa_s->conf->p2p_oper_reg_class == 124) {
3852                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
3853                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3854                            "frequency %d MHz", params->freq);
3855         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3856                    wpa_s->best_overall_freq > 0 &&
3857                    p2p_supported_freq(wpa_s->global->p2p,
3858                                       wpa_s->best_overall_freq)) {
3859                 params->freq = wpa_s->best_overall_freq;
3860                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
3861                            "channel %d MHz", params->freq);
3862         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3863                    wpa_s->best_24_freq > 0 &&
3864                    p2p_supported_freq(wpa_s->global->p2p,
3865                                       wpa_s->best_24_freq)) {
3866                 params->freq = wpa_s->best_24_freq;
3867                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
3868                            "channel %d MHz", params->freq);
3869         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3870                    wpa_s->best_5_freq > 0 &&
3871                    p2p_supported_freq(wpa_s->global->p2p,
3872                                       wpa_s->best_5_freq)) {
3873                 params->freq = wpa_s->best_5_freq;
3874                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
3875                            "channel %d MHz", params->freq);
3876         } else {
3877                 int chan;
3878                 for (chan = 0; chan < 11; chan++) {
3879                         params->freq = 2412 + chan * 5;
3880                         if (!wpas_p2p_disallowed_freq(wpa_s->global,
3881                                                       params->freq))
3882                                 break;
3883                 }
3884                 if (chan == 11) {
3885                         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
3886                                    "allowed");
3887                         return -1;
3888                 }
3889                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
3890                            "known)", params->freq);
3891         }
3892
3893         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3894             wpa_s->assoc_freq && !freq) {
3895                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3896                            "already using");
3897                 params->freq = wpa_s->assoc_freq;
3898         }
3899
3900         res = wpa_drv_shared_freq(wpa_s);
3901         if (res > 0 && !freq) {
3902                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3903                            "already using on a shared interface");
3904                 params->freq = res;
3905         } else if (res > 0 && freq != res &&
3906                    !(wpa_s->drv_flags &
3907                      WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3908                 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz "
3909                            "while connected on another channel (%u MHz)",
3910                            freq, res);
3911                 return -1;
3912         }
3913
3914         return 0;
3915 }
3916
3917
3918 static struct wpa_supplicant *
3919 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
3920                          int go)
3921 {
3922         struct wpa_supplicant *group_wpa_s;
3923
3924         if (!wpas_p2p_create_iface(wpa_s)) {
3925                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
3926                         "operations");
3927                 return wpa_s;
3928         }
3929
3930         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
3931                                          WPA_IF_P2P_CLIENT) < 0) {
3932                 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to add group interface");
3933                 return NULL;
3934         }
3935         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
3936         if (group_wpa_s == NULL) {
3937                 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to initialize group "
3938                         "interface");
3939                 wpas_p2p_remove_pending_group_interface(wpa_s);
3940                 return NULL;
3941         }
3942
3943         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
3944                 group_wpa_s->ifname);
3945         return group_wpa_s;
3946 }
3947
3948
3949 /**
3950  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
3951  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3952  * @persistent_group: Whether to create a persistent group
3953  * @freq: Frequency for the group or 0 to indicate no hardcoding
3954  * Returns: 0 on success, -1 on failure
3955  *
3956  * This function creates a new P2P group with the local end as the Group Owner,
3957  * i.e., without using Group Owner Negotiation.
3958  */
3959 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
3960                        int freq, int ht40)
3961 {
3962         struct p2p_go_neg_results params;
3963         unsigned int r;
3964
3965         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3966                 return -1;
3967
3968         /* Make sure we are not running find during connection establishment */
3969         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
3970         wpas_p2p_stop_find_oper(wpa_s);
3971
3972         if (freq == 2) {
3973                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
3974                            "band");
3975                 if (wpa_s->best_24_freq > 0 &&
3976                     p2p_supported_freq(wpa_s->global->p2p,
3977                                        wpa_s->best_24_freq)) {
3978                         freq = wpa_s->best_24_freq;
3979                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
3980                                    "channel: %d MHz", freq);
3981                 } else {
3982                         os_get_random((u8 *) &r, sizeof(r));
3983                         freq = 2412 + (r % 3) * 25;
3984                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
3985                                    "channel: %d MHz", freq);
3986                 }
3987         }
3988
3989         if (freq == 5) {
3990                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
3991                            "band");
3992                 if (wpa_s->best_5_freq > 0 &&
3993                     p2p_supported_freq(wpa_s->global->p2p,
3994                                        wpa_s->best_5_freq)) {
3995                         freq = wpa_s->best_5_freq;
3996                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
3997                                    "channel: %d MHz", freq);
3998                 } else {
3999                         os_get_random((u8 *) &r, sizeof(r));
4000                         freq = 5180 + (r % 4) * 20;
4001                         if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
4002                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
4003                                            "5 GHz channel for P2P group");
4004                                 return -1;
4005                         }
4006                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
4007                                    "channel: %d MHz", freq);
4008                 }
4009         }
4010
4011         if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) {
4012                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
4013                            "(%u MHz) is not supported for P2P uses",
4014                            freq);
4015                 return -1;
4016         }
4017
4018         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
4019                 return -1;
4020         if (params.freq &&
4021             !p2p_supported_freq(wpa_s->global->p2p, params.freq)) {
4022                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
4023                            "(%u MHz) is not supported for P2P uses",
4024                            params.freq);
4025                 return -1;
4026         }
4027         p2p_go_params(wpa_s->global->p2p, &params);
4028         params.persistent_group = persistent_group;
4029
4030         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
4031         if (wpa_s == NULL)
4032                 return -1;
4033         wpas_start_wps_go(wpa_s, &params, 0);
4034
4035         return 0;
4036 }
4037
4038
4039 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
4040                                  struct wpa_ssid *params, int addr_allocated)
4041 {
4042         struct wpa_ssid *ssid;
4043
4044         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
4045         if (wpa_s == NULL)
4046                 return -1;
4047
4048         wpa_supplicant_ap_deinit(wpa_s);
4049
4050         ssid = wpa_config_add_network(wpa_s->conf);
4051         if (ssid == NULL)
4052                 return -1;
4053         wpa_config_set_network_defaults(ssid);
4054         ssid->temporary = 1;
4055         ssid->proto = WPA_PROTO_RSN;
4056         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
4057         ssid->group_cipher = WPA_CIPHER_CCMP;
4058         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
4059         ssid->ssid = os_malloc(params->ssid_len);
4060         if (ssid->ssid == NULL) {
4061                 wpa_config_remove_network(wpa_s->conf, ssid->id);
4062                 return -1;
4063         }
4064         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
4065         ssid->ssid_len = params->ssid_len;
4066         ssid->p2p_group = 1;
4067         ssid->export_keys = 1;
4068         if (params->psk_set) {
4069                 os_memcpy(ssid->psk, params->psk, 32);
4070                 ssid->psk_set = 1;
4071         }
4072         if (params->passphrase)
4073                 ssid->passphrase = os_strdup(params->passphrase);
4074
4075         wpa_supplicant_select_network(wpa_s, ssid);
4076
4077         wpa_s->show_group_started = 1;
4078
4079         return 0;
4080 }
4081
4082
4083 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
4084                                   struct wpa_ssid *ssid, int addr_allocated,
4085                                   int freq, int ht40)
4086 {
4087         struct p2p_go_neg_results params;
4088         int go = 0;
4089
4090         if (ssid->disabled != 2 || ssid->ssid == NULL)
4091                 return -1;
4092
4093         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
4094             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
4095                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
4096                            "already running");
4097                 return 0;
4098         }
4099
4100         /* Make sure we are not running find during connection establishment */
4101         wpas_p2p_stop_find_oper(wpa_s);
4102
4103         wpa_s->p2p_fallback_to_go_neg = 0;
4104
4105         if (ssid->mode == WPAS_MODE_INFRA)
4106                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
4107
4108         if (ssid->mode != WPAS_MODE_P2P_GO)
4109                 return -1;
4110
4111         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
4112                 return -1;
4113
4114         params.role_go = 1;
4115         params.psk_set = ssid->psk_set;
4116         if (params.psk_set)
4117                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
4118         if (ssid->passphrase) {
4119                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
4120                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
4121                                    "persistent group");
4122                         return -1;
4123                 }
4124                 os_strlcpy(params.passphrase, ssid->passphrase,
4125                            sizeof(params.passphrase));
4126         }
4127         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
4128         params.ssid_len = ssid->ssid_len;
4129         params.persistent_group = 1;
4130
4131         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
4132         if (wpa_s == NULL)
4133                 return -1;
4134
4135         wpas_start_wps_go(wpa_s, &params, 0);
4136
4137         return 0;
4138 }
4139
4140
4141 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
4142                                struct wpabuf *proberesp_ies)
4143 {
4144         struct wpa_supplicant *wpa_s = ctx;
4145         if (wpa_s->ap_iface) {
4146                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
4147                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
4148                         wpabuf_free(beacon_ies);
4149                         wpabuf_free(proberesp_ies);
4150                         return;
4151                 }
4152                 if (beacon_ies) {
4153                         wpabuf_free(hapd->p2p_beacon_ie);
4154                         hapd->p2p_beacon_ie = beacon_ies;
4155                 }
4156                 wpabuf_free(hapd->p2p_probe_resp_ie);
4157                 hapd->p2p_probe_resp_ie = proberesp_ies;
4158         } else {
4159                 wpabuf_free(beacon_ies);
4160                 wpabuf_free(proberesp_ies);
4161         }
4162         wpa_supplicant_ap_update_beacon(wpa_s);
4163 }
4164
4165
4166 static void wpas_p2p_idle_update(void *ctx, int idle)
4167 {
4168         struct wpa_supplicant *wpa_s = ctx;
4169         if (!wpa_s->ap_iface)
4170                 return;
4171         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
4172         if (idle)
4173                 wpas_p2p_set_group_idle_timeout(wpa_s);
4174         else
4175                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4176 }
4177
4178
4179 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
4180                                        struct wpa_ssid *ssid)
4181 {
4182         struct p2p_group *group;
4183         struct p2p_group_config *cfg;
4184
4185         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4186                 return NULL;
4187         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4188                 return NULL;
4189
4190         cfg = os_zalloc(sizeof(*cfg));
4191         if (cfg == NULL)
4192                 return NULL;
4193
4194         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
4195                 cfg->persistent_group = 2;
4196         else if (ssid->p2p_persistent_group)
4197                 cfg->persistent_group = 1;
4198         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
4199         if (wpa_s->max_stations &&
4200             wpa_s->max_stations < wpa_s->conf->max_num_sta)
4201                 cfg->max_clients = wpa_s->max_stations;
4202         else
4203                 cfg->max_clients = wpa_s->conf->max_num_sta;
4204         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
4205         cfg->ssid_len = ssid->ssid_len;
4206         cfg->cb_ctx = wpa_s;
4207         cfg->ie_update = wpas_p2p_ie_update;
4208         cfg->idle_update = wpas_p2p_idle_update;
4209
4210         group = p2p_group_init(wpa_s->global->p2p, cfg);
4211         if (group == NULL)
4212                 os_free(cfg);
4213         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
4214                 p2p_group_notif_formation_done(group);
4215         wpa_s->p2p_group = group;
4216         return group;
4217 }
4218
4219
4220 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4221                           int registrar)
4222 {
4223         struct wpa_ssid *ssid = wpa_s->current_ssid;
4224
4225         if (!wpa_s->p2p_in_provisioning) {
4226                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
4227                            "provisioning not in progress");
4228                 return;
4229         }
4230
4231         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4232                 u8 go_dev_addr[ETH_ALEN];
4233                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
4234                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4235                                           ssid->ssid_len);
4236                 /* Clear any stored provisioning info */
4237                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
4238         }
4239
4240         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
4241                              NULL);
4242         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4243                 /*
4244                  * Use a separate timeout for initial data connection to
4245                  * complete to allow the group to be removed automatically if
4246                  * something goes wrong in this step before the P2P group idle
4247                  * timeout mechanism is taken into use.
4248                  */
4249                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
4250                                        wpas_p2p_group_formation_timeout,
4251                                        wpa_s->parent, NULL);
4252         }
4253         if (wpa_s->global->p2p)
4254                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
4255         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4256                 wpa_drv_wps_success_cb(wpa_s, peer_addr);
4257         wpas_group_formation_completed(wpa_s, 1);
4258 }
4259
4260
4261 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
4262                          struct wps_event_fail *fail)
4263 {
4264         if (!wpa_s->p2p_in_provisioning) {
4265                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
4266                            "provisioning not in progress");
4267                 return;
4268         }
4269
4270         if (wpa_s->go_params) {
4271                 p2p_clear_provisioning_info(
4272                         wpa_s->global->p2p,
4273                         wpa_s->go_params->peer_device_addr);
4274         }
4275
4276         wpas_notify_p2p_wps_failed(wpa_s, fail);
4277 }
4278
4279
4280 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4281                        const char *config_method,
4282                        enum wpas_p2p_prov_disc_use use)
4283 {
4284         u16 config_methods;
4285
4286         wpa_s->p2p_fallback_to_go_neg = 0;
4287         wpa_s->pending_pd_use = NORMAL_PD;
4288         if (os_strncmp(config_method, "display", 7) == 0)
4289                 config_methods = WPS_CONFIG_DISPLAY;
4290         else if (os_strncmp(config_method, "keypad", 6) == 0)
4291                 config_methods = WPS_CONFIG_KEYPAD;
4292         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
4293                  os_strncmp(config_method, "pushbutton", 10) == 0)
4294                 config_methods = WPS_CONFIG_PUSHBUTTON;
4295         else {
4296                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
4297                 return -1;
4298         }
4299
4300         if (use == WPAS_P2P_PD_AUTO) {
4301                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
4302                 wpa_s->pending_pd_config_methods = config_methods;
4303                 wpa_s->p2p_auto_pd = 1;
4304                 wpa_s->p2p_auto_join = 0;
4305                 wpa_s->pending_pd_before_join = 0;
4306                 wpa_s->auto_pd_scan_retry = 0;
4307                 wpas_p2p_stop_find(wpa_s);
4308                 wpa_s->p2p_join_scan_count = 0;
4309                 os_get_time(&wpa_s->p2p_auto_started);
4310                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
4311                            wpa_s->p2p_auto_started.sec,
4312                            wpa_s->p2p_auto_started.usec);
4313                 wpas_p2p_join_scan(wpa_s, NULL);
4314                 return 0;
4315         }
4316
4317         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4318                 return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr,
4319                                                  config_methods,
4320                                                  use == WPAS_P2P_PD_FOR_JOIN);
4321         }
4322
4323         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
4324                 return -1;
4325
4326         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
4327                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
4328                                  0, 1);
4329 }
4330
4331
4332 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
4333                               char *end)
4334 {
4335         return p2p_scan_result_text(ies, ies_len, buf, end);
4336 }
4337
4338
4339 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
4340 {
4341         if (!offchannel_pending_action_tx(wpa_s))
4342                 return;
4343
4344         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
4345                    "operation request");
4346         offchannel_clear_pending_action_tx(wpa_s);
4347 }
4348
4349
4350 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
4351                   enum p2p_discovery_type type,
4352                   unsigned int num_req_dev_types, const u8 *req_dev_types,
4353                   const u8 *dev_id, unsigned int search_delay)
4354 {
4355         wpas_p2p_clear_pending_action_tx(wpa_s);
4356         wpa_s->p2p_long_listen = 0;
4357
4358         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4359                 return wpa_drv_p2p_find(wpa_s, timeout, type);
4360
4361         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
4362             wpa_s->p2p_in_provisioning)
4363                 return -1;
4364
4365         wpa_supplicant_cancel_sched_scan(wpa_s);
4366
4367         return p2p_find(wpa_s->global->p2p, timeout, type,
4368                         num_req_dev_types, req_dev_types, dev_id,
4369                         search_delay);
4370 }
4371
4372
4373 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
4374 {
4375         wpas_p2p_clear_pending_action_tx(wpa_s);
4376         wpa_s->p2p_long_listen = 0;
4377         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4378         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4379         wpa_s->global->p2p_cb_on_scan_complete = 0;
4380
4381         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4382                 wpa_drv_p2p_stop_find(wpa_s);
4383                 return 1;
4384         }
4385
4386         if (wpa_s->global->p2p)
4387                 p2p_stop_find(wpa_s->global->p2p);
4388
4389         return 0;
4390 }
4391
4392
4393 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
4394 {
4395         if (wpas_p2p_stop_find_oper(wpa_s) > 0)
4396                 return;
4397         wpas_p2p_remove_pending_group_interface(wpa_s);
4398 }
4399
4400
4401 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4402 {
4403         struct wpa_supplicant *wpa_s = eloop_ctx;
4404         wpa_s->p2p_long_listen = 0;
4405 }
4406
4407
4408 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
4409 {
4410         int res;
4411
4412         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4413                 return -1;
4414
4415         wpa_supplicant_cancel_sched_scan(wpa_s);
4416         wpas_p2p_clear_pending_action_tx(wpa_s);
4417
4418         if (timeout == 0) {
4419                 /*
4420                  * This is a request for unlimited Listen state. However, at
4421                  * least for now, this is mapped to a Listen state for one
4422                  * hour.
4423                  */
4424                 timeout = 3600;
4425         }
4426         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4427         wpa_s->p2p_long_listen = 0;
4428
4429         /*
4430          * Stop previous find/listen operation to avoid trying to request a new
4431          * remain-on-channel operation while the driver is still running the
4432          * previous one.
4433          */
4434         if (wpa_s->global->p2p)
4435                 p2p_stop_find(wpa_s->global->p2p);
4436
4437         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
4438         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
4439                 wpa_s->p2p_long_listen = timeout * 1000;
4440                 eloop_register_timeout(timeout, 0,
4441                                        wpas_p2p_long_listen_timeout,
4442                                        wpa_s, NULL);
4443         }
4444
4445         return res;
4446 }
4447
4448
4449 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
4450                           u8 *buf, size_t len, int p2p_group)
4451 {
4452         struct wpabuf *p2p_ie;
4453         int ret;
4454
4455         if (wpa_s->global->p2p_disabled)
4456                 return -1;
4457         if (wpa_s->global->p2p == NULL)
4458                 return -1;
4459         if (bss == NULL)
4460                 return -1;
4461
4462         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
4463         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
4464                                p2p_group, p2p_ie);
4465         wpabuf_free(p2p_ie);
4466
4467         return ret;
4468 }
4469
4470
4471 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
4472                           const u8 *dst, const u8 *bssid,
4473                           const u8 *ie, size_t ie_len, int ssi_signal)
4474 {
4475         if (wpa_s->global->p2p_disabled)
4476                 return 0;
4477         if (wpa_s->global->p2p == NULL)
4478                 return 0;
4479
4480         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
4481                                  ie, ie_len)) {
4482         case P2P_PREQ_NOT_P2P:
4483                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
4484                                  ssi_signal);
4485                 /* fall through */
4486         case P2P_PREQ_MALFORMED:
4487         case P2P_PREQ_NOT_LISTEN:
4488         case P2P_PREQ_NOT_PROCESSED:
4489         default: /* make gcc happy */
4490                 return 0;
4491         case P2P_PREQ_PROCESSED:
4492                 return 1;
4493         }
4494 }
4495
4496
4497 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
4498                         const u8 *sa, const u8 *bssid,
4499                         u8 category, const u8 *data, size_t len, int freq)
4500 {
4501         if (wpa_s->global->p2p_disabled)
4502                 return;
4503         if (wpa_s->global->p2p == NULL)
4504                 return;
4505
4506         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
4507                       freq);
4508 }
4509
4510
4511 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
4512 {
4513         if (wpa_s->global->p2p_disabled)
4514                 return;
4515         if (wpa_s->global->p2p == NULL)
4516                 return;
4517
4518         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4519 }
4520
4521
4522 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
4523 {
4524         p2p_group_deinit(wpa_s->p2p_group);
4525         wpa_s->p2p_group = NULL;
4526
4527         wpa_s->ap_configured_cb = NULL;
4528         wpa_s->ap_configured_cb_ctx = NULL;
4529         wpa_s->ap_configured_cb_data = NULL;
4530         wpa_s->connect_without_scan = NULL;
4531 }
4532
4533
4534 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
4535 {
4536         wpa_s->p2p_long_listen = 0;
4537
4538         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4539                 return wpa_drv_p2p_reject(wpa_s, addr);
4540
4541         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4542                 return -1;
4543
4544         return p2p_reject(wpa_s->global->p2p, addr);
4545 }
4546
4547
4548 /* Invite to reinvoke a persistent group */
4549 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4550                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
4551                     int ht40)
4552 {
4553         enum p2p_invite_role role;
4554         u8 *bssid = NULL;
4555
4556         wpa_s->p2p_persistent_go_freq = freq;
4557         wpa_s->p2p_go_ht40 = !!ht40;
4558         if (ssid->mode == WPAS_MODE_P2P_GO) {
4559                 role = P2P_INVITE_ROLE_GO;
4560                 if (peer_addr == NULL) {
4561                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
4562                                    "address in invitation command");
4563                         return -1;
4564                 }
4565                 if (wpas_p2p_create_iface(wpa_s)) {
4566                         if (wpas_p2p_add_group_interface(wpa_s,
4567                                                          WPA_IF_P2P_GO) < 0) {
4568                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
4569                                            "allocate a new interface for the "
4570                                            "group");
4571                                 return -1;
4572                         }
4573                         bssid = wpa_s->pending_interface_addr;
4574                 } else
4575                         bssid = wpa_s->own_addr;
4576         } else {
4577                 role = P2P_INVITE_ROLE_CLIENT;
4578                 peer_addr = ssid->bssid;
4579         }
4580         wpa_s->pending_invite_ssid_id = ssid->id;
4581
4582         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4583                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4584                                           ssid->ssid, ssid->ssid_len,
4585                                           go_dev_addr, 1);
4586
4587         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4588                 return -1;
4589
4590         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4591                           ssid->ssid, ssid->ssid_len, freq, go_dev_addr, 1);
4592 }
4593
4594
4595 /* Invite to join an active group */
4596 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
4597                           const u8 *peer_addr, const u8 *go_dev_addr)
4598 {
4599         struct wpa_global *global = wpa_s->global;
4600         enum p2p_invite_role role;
4601         u8 *bssid = NULL;
4602         struct wpa_ssid *ssid;
4603         int persistent;
4604
4605         wpa_s->p2p_persistent_go_freq = 0;
4606         wpa_s->p2p_go_ht40 = 0;
4607
4608         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4609                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4610                         break;
4611         }
4612         if (wpa_s == NULL) {
4613                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
4614                 return -1;
4615         }
4616
4617         ssid = wpa_s->current_ssid;
4618         if (ssid == NULL) {
4619                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
4620                            "invitation");
4621                 return -1;
4622         }
4623
4624         persistent = ssid->p2p_persistent_group &&
4625                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
4626                                         ssid->ssid, ssid->ssid_len);
4627
4628         if (ssid->mode == WPAS_MODE_P2P_GO) {
4629                 role = P2P_INVITE_ROLE_ACTIVE_GO;
4630                 bssid = wpa_s->own_addr;
4631                 if (go_dev_addr == NULL)
4632                         go_dev_addr = wpa_s->global->p2p_dev_addr;
4633         } else {
4634                 role = P2P_INVITE_ROLE_CLIENT;
4635                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
4636                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
4637                                    "invite to current group");
4638                         return -1;
4639                 }
4640                 bssid = wpa_s->bssid;
4641                 if (go_dev_addr == NULL &&
4642                     !is_zero_ether_addr(wpa_s->go_dev_addr))
4643                         go_dev_addr = wpa_s->go_dev_addr;
4644         }
4645         wpa_s->parent->pending_invite_ssid_id = -1;
4646
4647         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4648                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4649                                           ssid->ssid, ssid->ssid_len,
4650                                           go_dev_addr, persistent);
4651
4652         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4653                 return -1;
4654
4655         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4656                           ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq,
4657                           go_dev_addr, persistent);
4658 }
4659
4660
4661 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
4662 {
4663         struct wpa_ssid *ssid = wpa_s->current_ssid;
4664         const char *ssid_txt;
4665         u8 go_dev_addr[ETH_ALEN];
4666         int network_id = -1;
4667         int persistent;
4668         int freq;
4669
4670         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
4671                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
4672                                      wpa_s->parent, NULL);
4673         }
4674
4675         if (!wpa_s->show_group_started || !ssid)
4676                 goto done;
4677
4678         wpa_s->show_group_started = 0;
4679
4680         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
4681         os_memset(go_dev_addr, 0, ETH_ALEN);
4682         if (ssid->bssid_set)
4683                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
4684         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4685                                                ssid->ssid_len);
4686         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
4687
4688         if (wpa_s->global->p2p_group_formation == wpa_s)
4689                 wpa_s->global->p2p_group_formation = NULL;
4690
4691         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
4692                 (int) wpa_s->assoc_freq;
4693         if (ssid->passphrase == NULL && ssid->psk_set) {
4694                 char psk[65];
4695                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
4696                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4697                         "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr="
4698                         MACSTR "%s",
4699                         wpa_s->ifname, ssid_txt, freq, psk,
4700                         MAC2STR(go_dev_addr),
4701                         persistent ? " [PERSISTENT]" : "");
4702         } else {
4703                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4704                         "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" "
4705                         "go_dev_addr=" MACSTR "%s",
4706                         wpa_s->ifname, ssid_txt, freq,
4707                         ssid->passphrase ? ssid->passphrase : "",
4708                         MAC2STR(go_dev_addr),
4709                         persistent ? " [PERSISTENT]" : "");
4710         }
4711
4712         if (persistent)
4713                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
4714                                                              ssid, go_dev_addr);
4715         if (network_id < 0)
4716                 network_id = ssid->id;
4717         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
4718
4719 done:
4720         if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
4721             wpa_s->global->p2p != NULL) {
4722                 wpa_s->global->p2p_cb_on_scan_complete = 0;
4723                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
4724                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
4725                                 "continued after successful connection");
4726                         p2p_increase_search_delay(
4727                                 wpa_s->global->p2p,
4728                                 wpas_p2p_search_delay(wpa_s));
4729                 }
4730         }
4731 }
4732
4733
4734 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
4735                           u32 interval1, u32 duration2, u32 interval2)
4736 {
4737         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4738                 return -1;
4739         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4740                 return -1;
4741
4742         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
4743             wpa_s->current_ssid == NULL ||
4744             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
4745                 return -1;
4746
4747         return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
4748                                 wpa_s->own_addr, wpa_s->assoc_freq,
4749                                 duration1, interval1, duration2, interval2);
4750 }
4751
4752
4753 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
4754                         unsigned int interval)
4755 {
4756         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4757                 return -1;
4758
4759         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4760                 return -1;
4761
4762         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
4763 }
4764
4765
4766 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
4767 {
4768         if (wpa_s->current_ssid == NULL) {
4769                 /*
4770                  * current_ssid can be cleared when P2P client interface gets
4771                  * disconnected, so assume this interface was used as P2P
4772                  * client.
4773                  */
4774                 return 1;
4775         }
4776         return wpa_s->current_ssid->p2p_group &&
4777                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
4778 }
4779
4780
4781 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
4782 {
4783         struct wpa_supplicant *wpa_s = eloop_ctx;
4784
4785         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
4786                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
4787                            "disabled");
4788                 return;
4789         }
4790
4791         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
4792                    "group");
4793         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
4794 }
4795
4796
4797 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
4798 {
4799         int timeout;
4800
4801         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
4802                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
4803
4804         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
4805                 return;
4806
4807         timeout = wpa_s->conf->p2p_group_idle;
4808         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
4809             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
4810             timeout = P2P_MAX_CLIENT_IDLE;
4811
4812         if (timeout == 0)
4813                 return;
4814
4815         if (timeout < 0) {
4816                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
4817                         timeout = 0; /* special client mode no-timeout */
4818                 else
4819                         return;
4820         }
4821
4822         if (wpa_s->p2p_in_provisioning) {
4823                 /*
4824                  * Use the normal group formation timeout during the
4825                  * provisioning phase to avoid terminating this process too
4826                  * early due to group idle timeout.
4827                  */
4828                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4829                            "during provisioning");
4830                 return;
4831         }
4832
4833         if (wpa_s->show_group_started) {
4834                 /*
4835                  * Use the normal group formation timeout between the end of
4836                  * the provisioning phase and completion of 4-way handshake to
4837                  * avoid terminating this process too early due to group idle
4838                  * timeout.
4839                  */
4840                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4841                            "while waiting for initial 4-way handshake to "
4842                            "complete");
4843                 return;
4844         }
4845
4846         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
4847                    timeout);
4848         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
4849                                wpa_s, NULL);
4850 }
4851
4852
4853 /* Returns 1 if the interface was removed */
4854 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4855                           u16 reason_code, const u8 *ie, size_t ie_len,
4856                           int locally_generated)
4857 {
4858         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4859                 return 0;
4860         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4861                 return 0;
4862
4863         if (!locally_generated)
4864                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4865                                  ie_len);
4866
4867         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
4868             wpa_s->current_ssid &&
4869             wpa_s->current_ssid->p2p_group &&
4870             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
4871                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
4872                            "session is ending");
4873                 if (wpas_p2p_group_delete(wpa_s,
4874                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
4875                     > 0)
4876                         return 1;
4877         }
4878
4879         return 0;
4880 }
4881
4882
4883 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4884                              u16 reason_code, const u8 *ie, size_t ie_len,
4885                              int locally_generated)
4886 {
4887         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4888                 return;
4889         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4890                 return;
4891
4892         if (!locally_generated)
4893                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4894                                    ie_len);
4895 }
4896
4897
4898 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
4899 {
4900         struct p2p_data *p2p = wpa_s->global->p2p;
4901
4902         if (p2p == NULL)
4903                 return;
4904
4905         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4906                 return;
4907
4908         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
4909                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
4910
4911         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
4912                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
4913
4914         if (wpa_s->wps &&
4915             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
4916                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
4917
4918         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
4919                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
4920
4921         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
4922                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
4923                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
4924                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
4925                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
4926         }
4927
4928         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
4929                 p2p_set_sec_dev_types(p2p,
4930                                       (void *) wpa_s->conf->sec_device_type,
4931                                       wpa_s->conf->num_sec_device_types);
4932
4933         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
4934                 int i;
4935                 p2p_remove_wps_vendor_extensions(p2p);
4936                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4937                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4938                                 continue;
4939                         p2p_add_wps_vendor_extension(
4940                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
4941                 }
4942         }
4943
4944         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
4945             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4946                 char country[3];
4947                 country[0] = wpa_s->conf->country[0];
4948                 country[1] = wpa_s->conf->country[1];
4949                 country[2] = 0x04;
4950                 p2p_set_country(p2p, country);
4951         }
4952
4953         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
4954                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
4955                                      wpa_s->conf->p2p_ssid_postfix ?
4956                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
4957                                      0);
4958         }
4959
4960         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
4961                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
4962
4963         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
4964                 u8 reg_class, channel;
4965                 int ret;
4966                 unsigned int r;
4967                 if (wpa_s->conf->p2p_listen_reg_class &&
4968                     wpa_s->conf->p2p_listen_channel) {
4969                         reg_class = wpa_s->conf->p2p_listen_reg_class;
4970                         channel = wpa_s->conf->p2p_listen_channel;
4971                 } else {
4972                         reg_class = 81;
4973                         /*
4974                          * Pick one of the social channels randomly as the
4975                          * listen channel.
4976                          */
4977                         os_get_random((u8 *) &r, sizeof(r));
4978                         channel = 1 + (r % 3) * 5;
4979                 }
4980                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
4981                 if (ret)
4982                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
4983                                    "failed: %d", ret);
4984         }
4985         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
4986                 u8 op_reg_class, op_channel, cfg_op_channel;
4987                 int ret = 0;
4988                 unsigned int r;
4989                 if (wpa_s->conf->p2p_oper_reg_class &&
4990                     wpa_s->conf->p2p_oper_channel) {
4991                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4992                         op_channel = wpa_s->conf->p2p_oper_channel;
4993                         cfg_op_channel = 1;
4994                 } else {
4995                         op_reg_class = 81;
4996                         /*
4997                          * Use random operation channel from (1, 6, 11)
4998                          *if no other preference is indicated.
4999                          */
5000                         os_get_random((u8 *) &r, sizeof(r));
5001                         op_channel = 1 + (r % 3) * 5;
5002                         cfg_op_channel = 0;
5003                 }
5004                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
5005                                            cfg_op_channel);
5006                 if (ret)
5007                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
5008                                    "failed: %d", ret);
5009         }
5010
5011         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
5012                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
5013                                       wpa_s->conf->p2p_pref_chan) < 0) {
5014                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
5015                                    "update failed");
5016                 }
5017         }
5018 }
5019
5020
5021 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
5022                      int duration)
5023 {
5024         if (!wpa_s->ap_iface)
5025                 return -1;
5026         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
5027                                    duration);
5028 }
5029
5030
5031 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
5032 {
5033         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5034                 return -1;
5035         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
5036                 return -1;
5037
5038         wpa_s->global->cross_connection = enabled;
5039         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
5040
5041         if (!enabled) {
5042                 struct wpa_supplicant *iface;
5043
5044                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
5045                 {
5046                         if (iface->cross_connect_enabled == 0)
5047                                 continue;
5048
5049                         iface->cross_connect_enabled = 0;
5050                         iface->cross_connect_in_use = 0;
5051                         wpa_msg(iface->parent, MSG_INFO,
5052                                 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
5053                                 iface->ifname, iface->cross_connect_uplink);
5054                 }
5055         }
5056
5057         return 0;
5058 }
5059
5060
5061 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
5062 {
5063         struct wpa_supplicant *iface;
5064
5065         if (!uplink->global->cross_connection)
5066                 return;
5067
5068         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
5069                 if (!iface->cross_connect_enabled)
5070                         continue;
5071                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
5072                     0)
5073                         continue;
5074                 if (iface->ap_iface == NULL)
5075                         continue;
5076                 if (iface->cross_connect_in_use)
5077                         continue;
5078
5079                 iface->cross_connect_in_use = 1;
5080                 wpa_msg(iface->parent, MSG_INFO,
5081                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
5082                         iface->ifname, iface->cross_connect_uplink);
5083         }
5084 }
5085
5086
5087 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
5088 {
5089         struct wpa_supplicant *iface;
5090
5091         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
5092                 if (!iface->cross_connect_enabled)
5093                         continue;
5094                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
5095                     0)
5096                         continue;
5097                 if (!iface->cross_connect_in_use)
5098                         continue;
5099
5100                 wpa_msg(iface->parent, MSG_INFO,
5101                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
5102                         iface->ifname, iface->cross_connect_uplink);
5103                 iface->cross_connect_in_use = 0;
5104         }
5105 }
5106
5107
5108 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
5109 {
5110         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
5111             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
5112             wpa_s->cross_connect_disallowed)
5113                 wpas_p2p_disable_cross_connect(wpa_s);
5114         else
5115                 wpas_p2p_enable_cross_connect(wpa_s);
5116         if (!wpa_s->ap_iface &&
5117             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
5118                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
5119 }
5120
5121
5122 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
5123 {
5124         wpas_p2p_disable_cross_connect(wpa_s);
5125         if (!wpa_s->ap_iface &&
5126             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
5127                                          wpa_s, NULL))
5128                 wpas_p2p_set_group_idle_timeout(wpa_s);
5129 }
5130
5131
5132 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
5133 {
5134         struct wpa_supplicant *iface;
5135
5136         if (!wpa_s->global->cross_connection)
5137                 return;
5138
5139         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
5140                 if (iface == wpa_s)
5141                         continue;
5142                 if (iface->drv_flags &
5143                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
5144                         continue;
5145                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
5146                         continue;
5147
5148                 wpa_s->cross_connect_enabled = 1;
5149                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
5150                            sizeof(wpa_s->cross_connect_uplink));
5151                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
5152                            "%s to %s whenever uplink is available",
5153                            wpa_s->ifname, wpa_s->cross_connect_uplink);
5154
5155                 if (iface->ap_iface || iface->current_ssid == NULL ||
5156                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
5157                     iface->cross_connect_disallowed ||
5158                     iface->wpa_state != WPA_COMPLETED)
5159                         break;
5160
5161                 wpa_s->cross_connect_in_use = 1;
5162                 wpa_msg(wpa_s->parent, MSG_INFO,
5163                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
5164                         wpa_s->ifname, wpa_s->cross_connect_uplink);
5165                 break;
5166         }
5167 }
5168
5169
5170 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
5171 {
5172         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
5173             !wpa_s->p2p_in_provisioning)
5174                 return 0; /* not P2P client operation */
5175
5176         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
5177                    "session overlap");
5178         if (wpa_s != wpa_s->parent)
5179                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
5180
5181         if (wpa_s->global->p2p)
5182                 p2p_group_formation_failed(wpa_s->global->p2p);
5183
5184         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5185                              wpa_s->parent, NULL);
5186
5187         wpas_group_formation_completed(wpa_s, 0);
5188         return 1;
5189 }
5190
5191
5192 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
5193 {
5194         struct p2p_channels chan;
5195
5196         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
5197                 return;
5198
5199         os_memset(&chan, 0, sizeof(chan));
5200         if (wpas_p2p_setup_channels(wpa_s, &chan)) {
5201                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
5202                            "channel list");
5203                 return;
5204         }
5205
5206         p2p_update_channel_list(wpa_s->global->p2p, &chan);
5207 }
5208
5209
5210 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
5211                                      struct wpa_scan_results *scan_res)
5212 {
5213         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
5214 }
5215
5216
5217 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
5218 {
5219         struct wpa_global *global = wpa_s->global;
5220         int found = 0;
5221         const u8 *peer;
5222
5223         if (global->p2p == NULL)
5224                 return -1;
5225
5226         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
5227
5228         if (wpa_s->pending_interface_name[0] &&
5229             !is_zero_ether_addr(wpa_s->pending_interface_addr))
5230                 found = 1;
5231
5232         peer = p2p_get_go_neg_peer(global->p2p);
5233         if (peer) {
5234                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
5235                            MACSTR, MAC2STR(peer));
5236                 p2p_unauthorize(global->p2p, peer);
5237                 found = 1;
5238         }
5239
5240         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
5241                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
5242                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
5243                 found = 1;
5244         }
5245
5246         if (wpa_s->pending_pd_before_join) {
5247                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
5248                 wpa_s->pending_pd_before_join = 0;
5249                 found = 1;
5250         }
5251
5252         wpas_p2p_stop_find(wpa_s);
5253
5254         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5255                 if (wpa_s == global->p2p_group_formation &&
5256                     (wpa_s->p2p_in_provisioning ||
5257                      wpa_s->parent->pending_interface_type ==
5258                      WPA_IF_P2P_CLIENT)) {
5259                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
5260                                    "formation found - cancelling",
5261                                    wpa_s->ifname);
5262                         found = 1;
5263                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5264                                              wpa_s->parent, NULL);
5265                         if (wpa_s->p2p_in_provisioning) {
5266                                 wpas_group_formation_completed(wpa_s, 0);
5267                                 break;
5268                         }
5269                         wpas_p2p_group_delete(wpa_s,
5270                                               P2P_GROUP_REMOVAL_REQUESTED);
5271                         break;
5272                 }
5273         }
5274
5275         if (!found) {
5276                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
5277                 return -1;
5278         }
5279
5280         return 0;
5281 }
5282
5283
5284 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
5285 {
5286         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
5287                 return;
5288
5289         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
5290                    "being available anymore");
5291         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
5292 }
5293
5294
5295 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
5296                                    int freq_24, int freq_5, int freq_overall)
5297 {
5298         struct p2p_data *p2p = wpa_s->global->p2p;
5299         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5300                 return;
5301         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
5302 }
5303
5304
5305 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
5306 {
5307         u8 peer[ETH_ALEN];
5308         struct p2p_data *p2p = wpa_s->global->p2p;
5309
5310         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5311                 return -1;
5312
5313         if (hwaddr_aton(addr, peer))
5314                 return -1;
5315
5316         return p2p_unauthorize(p2p, peer);
5317 }
5318
5319
5320 /**
5321  * wpas_p2p_disconnect - Disconnect from a P2P Group
5322  * @wpa_s: Pointer to wpa_supplicant data
5323  * Returns: 0 on success, -1 on failure
5324  *
5325  * This can be used to disconnect from a group in which the local end is a P2P
5326  * Client or to end a P2P Group in case the local end is the Group Owner. If a
5327  * virtual network interface was created for this group, that interface will be
5328  * removed. Otherwise, only the configured P2P group network will be removed
5329  * from the interface.
5330  */
5331 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
5332 {
5333
5334         if (wpa_s == NULL)
5335                 return -1;
5336
5337         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
5338                 -1 : 0;
5339 }
5340
5341
5342 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
5343 {
5344         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5345                 return 0;
5346
5347         return p2p_in_progress(wpa_s->global->p2p);
5348 }
5349
5350
5351 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
5352                               struct wpa_ssid *ssid)
5353 {
5354         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
5355             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5356                                  wpa_s->parent, NULL) > 0) {
5357                 /**
5358                  * Remove the network by scheduling the group formation
5359                  * timeout to happen immediately. The teardown code
5360                  * needs to be scheduled to run asynch later so that we
5361                  * don't delete data from under ourselves unexpectedly.
5362                  * Calling wpas_p2p_group_formation_timeout directly
5363                  * causes a series of crashes in WPS failure scenarios.
5364                  */
5365                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
5366                            "P2P group network getting removed");
5367                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
5368                                        wpa_s->parent, NULL);
5369         }
5370 }
5371
5372
5373 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
5374                                           const u8 *addr, const u8 *ssid,
5375                                           size_t ssid_len)
5376 {
5377         struct wpa_ssid *s;
5378         size_t i;
5379
5380         for (s = wpa_s->conf->ssid; s; s = s->next) {
5381                 if (s->disabled != 2)
5382                         continue;
5383                 if (ssid &&
5384                     (ssid_len != s->ssid_len ||
5385                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
5386                         continue;
5387                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
5388                         return s; /* peer is GO in the persistent group */
5389                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
5390                         continue;
5391                 for (i = 0; i < s->num_p2p_clients; i++) {
5392                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
5393                                       addr, ETH_ALEN) == 0)
5394                                 return s; /* peer is P2P client in persistent
5395                                            * group */
5396                 }
5397         }
5398
5399         return NULL;
5400 }
5401
5402
5403 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
5404                                        const u8 *addr)
5405 {
5406         if (addr == NULL)
5407                 return;
5408         wpas_p2p_add_persistent_group_client(wpa_s, addr);
5409 }
5410
5411
5412 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
5413                                         int group_added)
5414 {
5415         struct wpa_supplicant *group = wpa_s;
5416         if (wpa_s->global->p2p_group_formation)
5417                 group = wpa_s->global->p2p_group_formation;
5418         wpa_s = wpa_s->parent;
5419         offchannel_send_action_done(wpa_s);
5420         if (group_added)
5421                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
5422         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
5423         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
5424                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
5425                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
5426                          wpa_s->p2p_persistent_id,
5427                          wpa_s->p2p_pd_before_go_neg,
5428                          wpa_s->p2p_go_ht40);
5429 }
5430
5431
5432 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
5433 {
5434         if (!wpa_s->p2p_fallback_to_go_neg ||
5435             wpa_s->p2p_in_provisioning <= 5)
5436                 return 0;
5437
5438         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
5439                 return 0; /* peer operating as a GO */
5440
5441         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
5442                 "fallback to GO Negotiation");
5443         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
5444
5445         return 1;
5446 }
5447
5448
5449 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
5450 {
5451         const char *rn, *rn2;
5452         struct wpa_supplicant *ifs;
5453
5454         if (wpa_s->wpa_state > WPA_SCANNING) {
5455                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
5456                         "concurrent operation",
5457                         P2P_CONCURRENT_SEARCH_DELAY);
5458                 return P2P_CONCURRENT_SEARCH_DELAY;
5459         }
5460
5461         if (!wpa_s->driver->get_radio_name)
5462                 return 0;
5463         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
5464         if (rn == NULL || rn[0] == '\0')
5465                 return 0;
5466
5467         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
5468                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
5469                         continue;
5470
5471                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
5472                 if (!rn2 || os_strcmp(rn, rn2) != 0)
5473                         continue;
5474                 if (ifs->wpa_state > WPA_SCANNING) {
5475                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
5476                                 "delay due to concurrent operation on "
5477                                 "interface %s",
5478                                 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
5479                         return P2P_CONCURRENT_SEARCH_DELAY;
5480                 }
5481         }
5482
5483         return 0;
5484 }