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 #ifdef ANDROID_P2P
  50 #define P2P_MAX_CLIENT_IDLE 20
  51 #else
  52 #define P2P_MAX_CLIENT_IDLE 10
  53 #endif /* ANDROID_P2P */
  54 #endif /* P2P_MAX_CLIENT_IDLE */
  55
  56 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  57 /*
  58  * How many seconds to wait for initial 4-way handshake to get completed after
  59  * WPS provisioning step.
  60  */
  61 #define P2P_MAX_INITIAL_CONN_WAIT 10
  62 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  63
  64 #ifndef P2P_CONCURRENT_SEARCH_DELAY
  65 #ifdef ANDROID_P2P
  66 #define P2P_CONCURRENT_SEARCH_DELAY 0
  67 #else
  68 #define P2P_CONCURRENT_SEARCH_DELAY 500
  69 #endif
  70 #endif /* P2P_CONCURRENT_SEARCH_DELAY */
  71
  72 enum p2p_group_removal_reason {
  73         P2P_GROUP_REMOVAL_UNKNOWN,
  74         P2P_GROUP_REMOVAL_SILENT,
  75         P2P_GROUP_REMOVAL_FORMATION_FAILED,
  76         P2P_GROUP_REMOVAL_REQUESTED,
  77         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
  78         P2P_GROUP_REMOVAL_UNAVAILABLE,
  79         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
  80 #ifdef ANDROID_P2P
  81         P2P_GROUP_REMOVAL_FREQ_CONFLICT
  82 #endif
  83 };
  84
  85 #ifdef ANDROID_P2P
  86 static int wpas_global_scan_in_progress(struct wpa_supplicant *wpa_s);
  87 #endif
  88 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  89 static struct wpa_supplicant *
  90 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
  91                          int go);
  92 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s);
  93 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq);
  94 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
  95 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
  96                          const u8 *dev_addr, enum p2p_wps_method wps_method,
  97                          int auto_join);
  98 static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx,
  99                                             void *timeout_ctx);
 100 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 101 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 102 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 103 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 104 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 105                                         int group_added);
 106
 107 #ifdef ANDROID_P2P
 108 static int wpas_global_scan_in_progress(struct wpa_supplicant *wpa_s)
 109 {
 110         struct wpa_supplicant *iface = NULL;
 111
 112         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
 113                 if(iface->scanning  || iface->wpa_state == WPA_SCANNING) {
 114                         wpa_printf(MSG_DEBUG, "P2P: Scan in progress on %s,"
 115                         "defer P2P SEARCH", iface->ifname);
 116                         return 1;
 117                 }
 118         }
 119
 120         return 0;
 121 }
 122 #endif
 123
 124 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 125                                       struct wpa_scan_results *scan_res)
 126 {
 127         size_t i;
 128
 129         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 130                 return;
 131
 132         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 133                    (int) scan_res->num);
 134
 135         for (i = 0; i < scan_res->num; i++) {
 136                 struct wpa_scan_res *bss = scan_res->res[i];
 137                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 138                                          bss->freq, bss->level,
 139                                          (const u8 *) (bss + 1),
 140                                          bss->ie_len) > 0)
 141                         break;
 142         }
 143
 144         p2p_scan_res_handled(wpa_s->global->p2p);
 145 }
 146
 147
 148 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 149                          unsigned int num_req_dev_types,
 150                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 151 {
 152         struct wpa_supplicant *wpa_s = ctx;
 153         struct wpa_supplicant *ifs;
 154         struct wpa_driver_scan_params params;
 155         int ret;
 156         struct wpabuf *wps_ie, *ies;
 157         int social_channels[] = { 2412, 2437, 2462, 0, 0 };
 158         size_t ielen;
 159
 160         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 161                 return -1;
 162
 163         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
 164                 if (ifs->sta_scan_pending &&
 165                     wpas_p2p_in_progress(wpa_s) == 2) {
 166                         wpa_printf(MSG_DEBUG, "Delaying P2P scan to allow "
 167                                    "pending station mode scan to be "
 168                                    "completed on interface %s", ifs->ifname);
 169                         wpa_s->p2p_cb_on_scan_complete = 1;
 170                         wpa_supplicant_req_scan(ifs, 0, 0);
 171                         return 1;
 172                 }
 173         }
 174
 175         os_memset(&params, 0, sizeof(params));
 176
 177         /* P2P Wildcard SSID */
 178         params.num_ssids = 1;
 179         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
 180         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 181
 182         wpa_s->wps->dev.p2p = 1;
 183         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 184                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 185                                         num_req_dev_types, req_dev_types);
 186         if (wps_ie == NULL)
 187                 return -1;
 188
 189         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 190         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 191         if (ies == NULL) {
 192                 wpabuf_free(wps_ie);
 193                 return -1;
 194         }
 195         wpabuf_put_buf(ies, wps_ie);
 196         wpabuf_free(wps_ie);
 197
 198         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 199
 200         params.p2p_probe = 1;
 201         params.extra_ies = wpabuf_head(ies);
 202         params.extra_ies_len = wpabuf_len(ies);
 203
 204         switch (type) {
 205         case P2P_SCAN_SOCIAL:
 206                 params.freqs = social_channels;
 207                 break;
 208         case P2P_SCAN_FULL:
 209                 break;
 210         case P2P_SCAN_SPECIFIC:
 211                 social_channels[0] = freq;
 212                 social_channels[1] = 0;
 213                 params.freqs = social_channels;
 214                 break;
 215         case P2P_SCAN_SOCIAL_PLUS_ONE:
 216                 social_channels[3] = freq;
 217                 params.freqs = social_channels;
 218                 break;
 219         }
 220
 221         ret = wpa_drv_scan(wpa_s, &params);
 222
 223         wpabuf_free(ies);
 224
 225         if (ret) {
 226                 if (wpa_s->scanning ||
 227                     wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
 228                         wpa_s->p2p_cb_on_scan_complete = 1;
 229                         ret = 1;
 230                 }
 231         } else
 232                 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 233
 234         return ret;
 235 }
 236
 237
 238 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 239 {
 240         switch (p2p_group_interface) {
 241         case P2P_GROUP_INTERFACE_PENDING:
 242                 return WPA_IF_P2P_GROUP;
 243         case P2P_GROUP_INTERFACE_GO:
 244                 return WPA_IF_P2P_GO;
 245         case P2P_GROUP_INTERFACE_CLIENT:
 246                 return WPA_IF_P2P_CLIENT;
 247         }
 248
 249         return WPA_IF_P2P_GROUP;
 250 }
 251
 252
 253 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 254                                                   const u8 *ssid,
 255                                                   size_t ssid_len, int *go)
 256 {
 257         struct wpa_ssid *s;
 258
 259         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 260                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 261                         if (s->disabled != 0 || !s->p2p_group ||
 262                             s->ssid_len != ssid_len ||
 263                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 264                                 continue;
 265                         if (s->mode == WPAS_MODE_P2P_GO &&
 266                             s != wpa_s->current_ssid)
 267                                 continue;
 268                         if (go)
 269                                 *go = s->mode == WPAS_MODE_P2P_GO;
 270                         return wpa_s;
 271                 }
 272         }
 273
 274         return NULL;
 275 }
 276
 277
 278 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 279                                  enum p2p_group_removal_reason removal_reason)
 280 {
 281         struct wpa_ssid *ssid;
 282         char *gtype;
 283         const char *reason;
 284
 285         ssid = wpa_s->current_ssid;
 286 #ifdef ANDROID_P2P
 287         if ((ssid == NULL) && (wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
 288 #else
 289         if (ssid == NULL) {
 290 #endif
 291                 /*
 292                  * The current SSID was not known, but there may still be a
 293                  * pending P2P group interface waiting for provisioning.
 294                  */
 295                 ssid = wpa_s->conf->ssid;
 296                 while (ssid) {
 297                         if (ssid->p2p_group &&
 298                             (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 299                              (ssid->key_mgmt & WPA_KEY_MGMT_WPS)))
 300                                 break;
 301                         ssid = ssid->next;
 302                 }
 303                 if (ssid == NULL &&
 304                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 305                 {
 306                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 307                                    "not found");
 308                         return -1;
 309                 }
 310         }
 311         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 312                 gtype = "GO";
 313         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 314                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 315                 wpa_s->reassociate = 0;
 316                 wpa_s->disconnected = 1;
 317                 wpa_supplicant_deauthenticate(wpa_s,
 318                                               WLAN_REASON_DEAUTH_LEAVING);
 319                 gtype = "client";
 320         } else
 321                 gtype = "GO";
 322         if (wpa_s->cross_connect_in_use) {
 323                 wpa_s->cross_connect_in_use = 0;
 324                 wpa_msg(wpa_s->parent, MSG_INFO,
 325                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 326                         wpa_s->ifname, wpa_s->cross_connect_uplink);
 327         }
 328         switch (removal_reason) {
 329         case P2P_GROUP_REMOVAL_REQUESTED:
 330                 reason = " reason=REQUESTED";
 331                 break;
 332         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 333                 reason = " reason=FORMATION_FAILED";
 334                 break;
 335         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 336                 reason = " reason=IDLE";
 337                 break;
 338         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 339                 reason = " reason=UNAVAILABLE";
 340                 break;
 341         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 342                 reason = " reason=GO_ENDING_SESSION";
 343                 break;
 344 #ifdef ANDROID_P2P
 345         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 346                 reason = " reason=FREQ_CONFLICT";
 347                 break;
 348 #endif
 349         default:
 350                 reason = "";
 351                 break;
 352         }
 353         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 354                 wpa_msg(wpa_s->parent, MSG_INFO,
 355                         P2P_EVENT_GROUP_REMOVED "%s %s%s",
 356                         wpa_s->ifname, gtype, reason);
 357         }
 358
 359         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 360                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 361
 362         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 363                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 364
 365         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 366                 struct wpa_global *global;
 367                 char *ifname;
 368                 enum wpa_driver_if_type type;
 369                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 370                         wpa_s->ifname);
 371                 global = wpa_s->global;
 372                 ifname = os_strdup(wpa_s->ifname);
 373                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 374                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 375                 wpa_s = global->ifaces;
 376                 if (wpa_s && ifname)
 377                         wpa_drv_if_remove(wpa_s, type, ifname);
 378                 os_free(ifname);
 379                 return 1;
 380         }
 381
 382         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 383         if (ssid && (ssid->p2p_group ||
 384                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 385                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 386                 int id = ssid->id;
 387                 if (ssid == wpa_s->current_ssid) {
 388                         wpa_sm_set_config(wpa_s->wpa, NULL);
 389                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 390                         wpa_s->current_ssid = NULL;
 391                 }
 392                 /*
 393                  * Networks objects created during any P2P activities are not
 394                  * exposed out as they might/will confuse certain non-P2P aware
 395                  * applications since these network objects won't behave like
 396                  * regular ones.
 397                  *
 398                  * Likewise, we don't send out network removed signals for such
 399                  * network objects.
 400                  */
 401                 wpa_config_remove_network(wpa_s->conf, id);
 402                 wpa_supplicant_clear_status(wpa_s);
 403                 wpa_supplicant_cancel_sched_scan(wpa_s);
 404         } else {
 405                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 406                            "found");
 407         }
 408         if (wpa_s->ap_iface)
 409                 wpa_supplicant_ap_deinit(wpa_s);
 410         else
 411                 wpa_drv_deinit_p2p_cli(wpa_s);
 412
 413         return 0;
 414 }
 415
 416
 417 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 418                                      u8 *go_dev_addr,
 419                                      const u8 *ssid, size_t ssid_len)
 420 {
 421         struct wpa_bss *bss;
 422         const u8 *bssid;
 423         struct wpabuf *p2p;
 424         u8 group_capab;
 425         const u8 *addr;
 426
 427         if (wpa_s->go_params)
 428                 bssid = wpa_s->go_params->peer_interface_addr;
 429         else
 430                 bssid = wpa_s->bssid;
 431
 432         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 433         if (bss == NULL) {
 434                 u8 iface_addr[ETH_ALEN];
 435                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 436                                            iface_addr) == 0)
 437                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 438         }
 439         if (bss == NULL) {
 440                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 441                            "group is persistent - BSS " MACSTR " not found",
 442                            MAC2STR(bssid));
 443                 return 0;
 444         }
 445
 446         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 447         if (p2p == NULL) {
 448                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 449                            "group is persistent - BSS " MACSTR
 450                            " did not include P2P IE", MAC2STR(bssid));
 451                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 452                             (u8 *) (bss + 1), bss->ie_len);
 453                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 454                             ((u8 *) bss + 1) + bss->ie_len,
 455                             bss->beacon_ie_len);
 456                 return 0;
 457         }
 458
 459         group_capab = p2p_get_group_capab(p2p);
 460         addr = p2p_get_go_dev_addr(p2p);
 461         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 462                    "group_capab=0x%x", group_capab);
 463         if (addr) {
 464                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
 465                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
 466                            MAC2STR(addr));
 467         } else
 468                 os_memset(go_dev_addr, 0, ETH_ALEN);
 469         wpabuf_free(p2p);
 470
 471         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
 472                    "go_dev_addr=" MACSTR,
 473                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
 474
 475         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
 476 }
 477
 478
 479 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
 480                                            struct wpa_ssid *ssid,
 481                                            const u8 *go_dev_addr)
 482 {
 483         struct wpa_ssid *s;
 484         int changed = 0;
 485
 486         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
 487                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
 488         for (s = wpa_s->conf->ssid; s; s = s->next) {
 489                 if (s->disabled == 2 &&
 490                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
 491                     s->ssid_len == ssid->ssid_len &&
 492                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
 493                         break;
 494         }
 495
 496         if (s) {
 497                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
 498                            "entry");
 499                 if (ssid->passphrase && !s->passphrase)
 500                         changed = 1;
 501                 else if (ssid->passphrase && s->passphrase &&
 502                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
 503                         changed = 1;
 504         } else {
 505                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
 506                            "entry");
 507                 changed = 1;
 508                 s = wpa_config_add_network(wpa_s->conf);
 509                 if (s == NULL)
 510                         return -1;
 511
 512                 /*
 513                  * Instead of network_added we emit persistent_group_added
 514                  * notification. Also to keep the defense checks in
 515                  * persistent_group obj registration method, we set the
 516                  * relevant flags in s to designate it as a persistent group.
 517                  */
 518                 s->p2p_group = 1;
 519                 s->p2p_persistent_group = 1;
 520                 wpas_notify_persistent_group_added(wpa_s, s);
 521                 wpa_config_set_network_defaults(s);
 522         }
 523
 524         s->p2p_group = 1;
 525         s->p2p_persistent_group = 1;
 526         s->disabled = 2;
 527         s->bssid_set = 1;
 528         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
 529         s->mode = ssid->mode;
 530         s->auth_alg = WPA_AUTH_ALG_OPEN;
 531         s->key_mgmt = WPA_KEY_MGMT_PSK;
 532         s->proto = WPA_PROTO_RSN;
 533         s->pairwise_cipher = WPA_CIPHER_CCMP;
 534         s->export_keys = 1;
 535         if (ssid->passphrase) {
 536                 os_free(s->passphrase);
 537                 s->passphrase = os_strdup(ssid->passphrase);
 538         }
 539         if (ssid->psk_set) {
 540                 s->psk_set = 1;
 541                 os_memcpy(s->psk, ssid->psk, 32);
 542         }
 543         if (s->passphrase && !s->psk_set)
 544                 wpa_config_update_psk(s);
 545         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
 546                 os_free(s->ssid);
 547                 s->ssid = os_malloc(ssid->ssid_len);
 548         }
 549         if (s->ssid) {
 550                 s->ssid_len = ssid->ssid_len;
 551                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
 552         }
 553
 554 #ifndef CONFIG_NO_CONFIG_WRITE
 555         if (changed && wpa_s->conf->update_config &&
 556             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 557                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 558         }
 559 #endif /* CONFIG_NO_CONFIG_WRITE */
 560
 561         return s->id;
 562 }
 563
 564
 565 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
 566                                                  const u8 *addr)
 567 {
 568         struct wpa_ssid *ssid, *s;
 569         u8 *n;
 570         size_t i;
 571         int found = 0;
 572
 573         ssid = wpa_s->current_ssid;
 574         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
 575             !ssid->p2p_persistent_group)
 576                 return;
 577
 578         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
 579                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
 580                         continue;
 581
 582                 if (s->ssid_len == ssid->ssid_len &&
 583                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
 584                         break;
 585         }
 586
 587         if (s == NULL)
 588                 return;
 589
 590         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
 591                 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
 592                               ETH_ALEN) != 0)
 593                         continue;
 594
 595                 if (i == s->num_p2p_clients - 1)
 596                         return; /* already the most recent entry */
 597
 598                 /* move the entry to mark it most recent */
 599                 os_memmove(s->p2p_client_list + i * ETH_ALEN,
 600                            s->p2p_client_list + (i + 1) * ETH_ALEN,
 601                            (s->num_p2p_clients - i - 1) * ETH_ALEN);
 602                 os_memcpy(s->p2p_client_list +
 603                           (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
 604                 found = 1;
 605                 break;
 606         }
 607
 608         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
 609                 n = os_realloc_array(s->p2p_client_list,
 610                                      s->num_p2p_clients + 1, ETH_ALEN);
 611                 if (n == NULL)
 612                         return;
 613                 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
 614                 s->p2p_client_list = n;
 615                 s->num_p2p_clients++;
 616         } else if (!found) {
 617                 /* Not enough room for an additional entry - drop the oldest
 618                  * entry */
 619                 os_memmove(s->p2p_client_list,
 620                            s->p2p_client_list + ETH_ALEN,
 621                            (s->num_p2p_clients - 1) * ETH_ALEN);
 622                 os_memcpy(s->p2p_client_list +
 623                           (s->num_p2p_clients - 1) * ETH_ALEN,
 624                           addr, ETH_ALEN);
 625         }
 626
 627 #ifndef CONFIG_NO_CONFIG_WRITE
 628         if (wpa_s->parent->conf->update_config &&
 629             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
 630                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 631 #endif /* CONFIG_NO_CONFIG_WRITE */
 632 }
 633
 634
 635 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 636                                            int success)
 637 {
 638         struct wpa_ssid *ssid;
 639         const char *ssid_txt;
 640         int client;
 641         int persistent;
 642         u8 go_dev_addr[ETH_ALEN];
 643         int network_id = -1;
 644
 645         /*
 646          * This callback is likely called for the main interface. Update wpa_s
 647          * to use the group interface if a new interface was created for the
 648          * group.
 649          */
 650         if (wpa_s->global->p2p_group_formation)
 651                 wpa_s = wpa_s->global->p2p_group_formation;
 652         wpa_s->global->p2p_group_formation = NULL;
 653         wpa_s->p2p_in_provisioning = 0;
 654
 655         if (!success) {
 656                 wpa_msg(wpa_s->parent, MSG_INFO,
 657                         P2P_EVENT_GROUP_FORMATION_FAILURE);
 658                 wpas_p2p_group_delete(wpa_s,
 659                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
 660                 return;
 661         }
 662
 663         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS);
 664
 665         ssid = wpa_s->current_ssid;
 666         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 667                 ssid->mode = WPAS_MODE_P2P_GO;
 668                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 669                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 670         }
 671
 672         persistent = 0;
 673         if (ssid) {
 674                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 675                 client = ssid->mode == WPAS_MODE_INFRA;
 676                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 677                         persistent = ssid->p2p_persistent_group;
 678                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
 679                                   ETH_ALEN);
 680                 } else
 681                         persistent = wpas_p2p_persistent_group(wpa_s,
 682                                                                go_dev_addr,
 683                                                                ssid->ssid,
 684                                                                ssid->ssid_len);
 685         } else {
 686                 ssid_txt = "";
 687                 client = wpa_s->p2p_group_interface ==
 688                         P2P_GROUP_INTERFACE_CLIENT;
 689                 os_memset(go_dev_addr, 0, ETH_ALEN);
 690         }
 691
 692         wpa_s->show_group_started = 0;
 693         if (client) {
 694                 /*
 695                  * Indicate event only after successfully completed 4-way
 696                  * handshake, i.e., when the interface is ready for data
 697                  * packets.
 698                  */
 699                 wpa_s->show_group_started = 1;
 700 #ifdef ANDROID_P2P
 701                 /* For client Second phase of Group formation (4-way handshake) can be still pending
 702                  * So we need to restore wpa_s->global->p2p_group_formation */
 703                 wpa_s->global->p2p_group_formation = wpa_s;
 704 #endif
 705
 706         } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
 707                 char psk[65];
 708                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
 709                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 710                         "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR
 711                         "%s",
 712                         wpa_s->ifname, ssid_txt, ssid->frequency, psk,
 713                         MAC2STR(go_dev_addr),
 714                         persistent ? " [PERSISTENT]" : "");
 715                 wpas_p2p_cross_connect_setup(wpa_s);
 716                 wpas_p2p_set_group_idle_timeout(wpa_s);
 717         } else {
 718                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 719                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 720                         "go_dev_addr=" MACSTR "%s",
 721                         wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0,
 722                         ssid && ssid->passphrase ? ssid->passphrase : "",
 723                         MAC2STR(go_dev_addr),
 724                         persistent ? " [PERSISTENT]" : "");
 725                 wpas_p2p_cross_connect_setup(wpa_s);
 726                 wpas_p2p_set_group_idle_timeout(wpa_s);
 727         }
 728
 729         if (persistent)
 730                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
 731                                                              ssid, go_dev_addr);
 732         if (network_id < 0 && ssid)
 733                 network_id = ssid->id;
 734         if (!client)
 735                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 736 }
 737
 738
 739 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
 740                                            unsigned int freq,
 741                                            const u8 *dst, const u8 *src,
 742                                            const u8 *bssid,
 743                                            const u8 *data, size_t data_len,
 744                                            enum offchannel_send_action_result
 745                                            result)
 746 {
 747         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
 748
 749         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
 750                 return;
 751         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
 752                 return;
 753
 754         switch (result) {
 755         case OFFCHANNEL_SEND_ACTION_SUCCESS:
 756                 res = P2P_SEND_ACTION_SUCCESS;
 757                 break;
 758         case OFFCHANNEL_SEND_ACTION_NO_ACK:
 759                 res = P2P_SEND_ACTION_NO_ACK;
 760                 break;
 761         case OFFCHANNEL_SEND_ACTION_FAILED:
 762                 res = P2P_SEND_ACTION_FAILED;
 763                 break;
 764         }
 765
 766         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
 767
 768         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
 769             wpa_s->pending_pd_before_join &&
 770             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
 771              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
 772                 wpa_s->pending_pd_before_join = 0;
 773                 if (wpa_s->p2p_fallback_to_go_neg) {
 774                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
 775                                 "during p2p_connect-auto");
 776                         wpas_p2p_fallback_to_go_neg(wpa_s, 0);
 777                         return;
 778                 }
 779
 780                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
 781                            "join-existing-group operation (no ACK for PD "
 782                            "Req)");
 783                 wpas_p2p_join_start(wpa_s);
 784         }
 785 }
 786
 787
 788 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
 789                             const u8 *src, const u8 *bssid, const u8 *buf,
 790                             size_t len, unsigned int wait_time)
 791 {
 792         struct wpa_supplicant *wpa_s = ctx;
 793         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
 794                                       wait_time,
 795                                       wpas_p2p_send_action_tx_status, 1);
 796 }
 797
 798
 799 static void wpas_send_action_done(void *ctx)
 800 {
 801         struct wpa_supplicant *wpa_s = ctx;
 802         offchannel_send_action_done(wpa_s);
 803 }
 804
 805
 806 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
 807                                     struct p2p_go_neg_results *params)
 808 {
 809         if (wpa_s->go_params == NULL) {
 810                 wpa_s->go_params = os_malloc(sizeof(*params));
 811                 if (wpa_s->go_params == NULL)
 812                         return -1;
 813         }
 814         os_memcpy(wpa_s->go_params, params, sizeof(*params));
 815         return 0;
 816 }
 817
 818
 819 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
 820                                     struct p2p_go_neg_results *res)
 821 {
 822         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR,
 823                    MAC2STR(res->peer_interface_addr));
 824         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
 825                           res->ssid, res->ssid_len);
 826         wpa_supplicant_ap_deinit(wpa_s);
 827         wpas_copy_go_neg_results(wpa_s, res);
 828         if (res->wps_method == WPS_PBC)
 829                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
 830         else {
 831                 u16 dev_pw_id = DEV_PW_DEFAULT;
 832                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
 833                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
 834                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
 835                                    wpa_s->p2p_pin, 1, dev_pw_id);
 836         }
 837 }
 838
 839
 840 static void p2p_go_configured(void *ctx, void *data)
 841 {
 842         struct wpa_supplicant *wpa_s = ctx;
 843         struct p2p_go_neg_results *params = data;
 844         struct wpa_ssid *ssid;
 845         int network_id = -1;
 846
 847         ssid = wpa_s->current_ssid;
 848         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
 849                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
 850                 if (wpa_s->global->p2p_group_formation == wpa_s)
 851                         wpa_s->global->p2p_group_formation = NULL;
 852                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 853                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 854                         "go_dev_addr=" MACSTR "%s",
 855                         wpa_s->ifname,
 856                         wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
 857                         ssid->frequency,
 858                         params->passphrase ? params->passphrase : "",
 859                         MAC2STR(wpa_s->global->p2p_dev_addr),
 860                         params->persistent_group ? " [PERSISTENT]" : "");
 861
 862                 if (params->persistent_group)
 863                         network_id = wpas_p2p_store_persistent_group(
 864                                 wpa_s->parent, ssid,
 865                                 wpa_s->global->p2p_dev_addr);
 866                 if (network_id < 0)
 867                         network_id = ssid->id;
 868                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 869                 wpas_p2p_cross_connect_setup(wpa_s);
 870                 wpas_p2p_set_group_idle_timeout(wpa_s);
 871                 return;
 872         }
 873
 874         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
 875         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
 876                                               params->peer_interface_addr)) {
 877                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
 878                            "filtering");
 879                 return;
 880         }
 881         if (params->wps_method == WPS_PBC)
 882                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
 883                                           params->peer_device_addr);
 884         else if (wpa_s->p2p_pin[0])
 885                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
 886                                           wpa_s->p2p_pin, NULL, 0);
 887         os_free(wpa_s->go_params);
 888         wpa_s->go_params = NULL;
 889 }
 890
 891
 892 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
 893                               struct p2p_go_neg_results *params,
 894                               int group_formation)
 895 {
 896         struct wpa_ssid *ssid;
 897
 898         if (wpas_copy_go_neg_results(wpa_s, params) < 0)
 899                 return;
 900
 901         ssid = wpa_config_add_network(wpa_s->conf);
 902         if (ssid == NULL)
 903                 return;
 904
 905         wpa_s->show_group_started = 0;
 906
 907         wpa_config_set_network_defaults(ssid);
 908         ssid->temporary = 1;
 909         ssid->p2p_group = 1;
 910         ssid->p2p_persistent_group = params->persistent_group;
 911         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
 912                 WPAS_MODE_P2P_GO;
 913         ssid->frequency = params->freq;
 914         ssid->ht40 = params->ht40;
 915         ssid->ssid = os_zalloc(params->ssid_len + 1);
 916         if (ssid->ssid) {
 917                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
 918                 ssid->ssid_len = params->ssid_len;
 919         }
 920         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 921         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 922         ssid->proto = WPA_PROTO_RSN;
 923         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 924         ssid->passphrase = os_strdup(params->passphrase);
 925         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
 926
 927         wpa_s->ap_configured_cb = p2p_go_configured;
 928         wpa_s->ap_configured_cb_ctx = wpa_s;
 929         wpa_s->ap_configured_cb_data = wpa_s->go_params;
 930         wpa_s->connect_without_scan = ssid;
 931         wpa_s->reassociate = 1;
 932         wpa_s->disconnected = 0;
 933         wpa_supplicant_req_scan(wpa_s, 0, 0);
 934 }
 935
 936
 937 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
 938                                   const struct wpa_supplicant *src)
 939 {
 940         struct wpa_config *d;
 941         const struct wpa_config *s;
 942
 943         d = dst->conf;
 944         s = src->conf;
 945
 946 #define C(n) if (s->n) d->n = os_strdup(s->n)
 947         C(device_name);
 948         C(manufacturer);
 949         C(model_name);
 950         C(model_number);
 951         C(serial_number);
 952         C(config_methods);
 953 #undef C
 954
 955         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
 956         os_memcpy(d->sec_device_type, s->sec_device_type,
 957                   sizeof(d->sec_device_type));
 958         d->num_sec_device_types = s->num_sec_device_types;
 959
 960         d->p2p_group_idle = s->p2p_group_idle;
 961         d->p2p_intra_bss = s->p2p_intra_bss;
 962         d->persistent_reconnect = s->persistent_reconnect;
 963         d->max_num_sta = s->max_num_sta;
 964         d->pbc_in_m1 = s->pbc_in_m1;
 965 }
 966
 967
 968 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 969                                         enum wpa_driver_if_type type)
 970 {
 971         char ifname[120], force_ifname[120];
 972
 973         if (wpa_s->pending_interface_name[0]) {
 974                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
 975                            "- skip creation of a new one");
 976                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
 977                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
 978                                    "unknown?! ifname='%s'",
 979                                    wpa_s->pending_interface_name);
 980                         return -1;
 981                 }
 982                 return 0;
 983         }
 984
 985         os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname,
 986                     wpa_s->p2p_group_idx);
 987         if (os_strlen(ifname) >= IFNAMSIZ &&
 988             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
 989                 /* Try to avoid going over the IFNAMSIZ length limit */
 990                 os_snprintf(ifname, sizeof(ifname), "p2p-%d",
 991                             wpa_s->p2p_group_idx);
 992         }
 993         force_ifname[0] = '\0';
 994
 995         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
 996                    ifname);
 997         wpa_s->p2p_group_idx++;
 998
 999         wpa_s->pending_interface_type = type;
1000         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1001                            wpa_s->pending_interface_addr, NULL) < 0) {
1002                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1003                            "interface");
1004                 return -1;
1005         }
1006
1007         if (force_ifname[0]) {
1008                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1009                            force_ifname);
1010                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1011                            sizeof(wpa_s->pending_interface_name));
1012         } else
1013                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1014                            sizeof(wpa_s->pending_interface_name));
1015         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1016                    MACSTR, wpa_s->pending_interface_name,
1017                    MAC2STR(wpa_s->pending_interface_addr));
1018
1019         return 0;
1020 }
1021
1022
1023 static void wpas_p2p_remove_pending_group_interface(
1024         struct wpa_supplicant *wpa_s)
1025 {
1026         if (!wpa_s->pending_interface_name[0] ||
1027             is_zero_ether_addr(wpa_s->pending_interface_addr))
1028                 return; /* No pending virtual interface */
1029
1030         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1031                    wpa_s->pending_interface_name);
1032         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1033                           wpa_s->pending_interface_name);
1034         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1035         wpa_s->pending_interface_name[0] = '\0';
1036 }
1037
1038
1039 static struct wpa_supplicant *
1040 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1041 {
1042         struct wpa_interface iface;
1043         struct wpa_supplicant *group_wpa_s;
1044
1045         if (!wpa_s->pending_interface_name[0]) {
1046                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1047                 if (!wpas_p2p_create_iface(wpa_s))
1048                         return NULL;
1049                 /*
1050                  * Something has forced us to remove the pending interface; try
1051                  * to create a new one and hope for the best that we will get
1052                  * the same local address.
1053                  */
1054                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1055                                                  WPA_IF_P2P_CLIENT) < 0)
1056                         return NULL;
1057         }
1058
1059         os_memset(&iface, 0, sizeof(iface));
1060         iface.ifname = wpa_s->pending_interface_name;
1061         iface.driver = wpa_s->driver->name;
1062         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1063         iface.driver_param = wpa_s->conf->driver_param;
1064         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1065         if (group_wpa_s == NULL) {
1066                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1067                            "wpa_supplicant interface");
1068                 return NULL;
1069         }
1070         wpa_s->pending_interface_name[0] = '\0';
1071         group_wpa_s->parent = wpa_s;
1072         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1073                 P2P_GROUP_INTERFACE_CLIENT;
1074         wpa_s->global->p2p_group_formation = group_wpa_s;
1075
1076         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1077
1078         return group_wpa_s;
1079 }
1080
1081
1082 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1083                                              void *timeout_ctx)
1084 {
1085         struct wpa_supplicant *wpa_s = eloop_ctx;
1086         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1087         if (wpa_s->global->p2p)
1088                 p2p_group_formation_failed(wpa_s->global->p2p);
1089         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1090                 wpa_drv_p2p_group_formation_failed(wpa_s);
1091         wpas_group_formation_completed(wpa_s, 0);
1092 }
1093
1094
1095 void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1096 {
1097         struct wpa_supplicant *wpa_s = ctx;
1098
1099         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1100                 wpa_drv_cancel_remain_on_channel(wpa_s);
1101                 wpa_s->off_channel_freq = 0;
1102                 wpa_s->roc_waiting_drv_freq = 0;
1103         }
1104
1105         if (res->status) {
1106                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d",
1107                         res->status);
1108                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1109                 wpas_p2p_remove_pending_group_interface(wpa_s);
1110                 return;
1111         }
1112
1113         if (wpa_s->p2p_go_ht40)
1114                 res->ht40 = 1;
1115
1116         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS);
1117         wpas_notify_p2p_go_neg_completed(wpa_s, res);
1118
1119         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1120                 struct wpa_ssid *ssid;
1121                 ssid = wpa_config_get_network(wpa_s->conf,
1122                                               wpa_s->p2p_persistent_id);
1123                 if (ssid && ssid->disabled == 2 &&
1124                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1125                         size_t len = os_strlen(ssid->passphrase);
1126                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1127                                    "on requested persistent group");
1128                         os_memcpy(res->passphrase, ssid->passphrase, len);
1129                         res->passphrase[len] = '\0';
1130                 }
1131         }
1132
1133         if (wpa_s->create_p2p_iface) {
1134                 struct wpa_supplicant *group_wpa_s =
1135                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1136                 if (group_wpa_s == NULL) {
1137                         wpas_p2p_remove_pending_group_interface(wpa_s);
1138                         return;
1139                 }
1140                 if (group_wpa_s != wpa_s) {
1141                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1142                                   sizeof(group_wpa_s->p2p_pin));
1143                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1144                 }
1145                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1146                 wpa_s->pending_interface_name[0] = '\0';
1147                 group_wpa_s->p2p_in_provisioning = 1;
1148
1149                 if (res->role_go)
1150                         wpas_start_wps_go(group_wpa_s, res, 1);
1151                 else
1152                         wpas_start_wps_enrollee(group_wpa_s, res);
1153         } else {
1154                 wpa_s->p2p_in_provisioning = 1;
1155                 wpa_s->global->p2p_group_formation = wpa_s;
1156
1157                 if (res->role_go)
1158                         wpas_start_wps_go(wpa_s, res, 1);
1159                 else
1160                         wpas_start_wps_enrollee(ctx, res);
1161         }
1162
1163         wpa_s->p2p_long_listen = 0;
1164         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1165
1166         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1167         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1168                                (res->peer_config_timeout % 100) * 10000,
1169                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1170 }
1171
1172
1173 void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1174 {
1175         struct wpa_supplicant *wpa_s = ctx;
1176         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1177                 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1178
1179         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1180 }
1181
1182
1183 void wpas_dev_found(void *ctx, const u8 *addr,
1184                     const struct p2p_peer_info *info,
1185                     int new_device)
1186 {
1187 #ifndef CONFIG_NO_STDOUT_DEBUG
1188         struct wpa_supplicant *wpa_s = ctx;
1189         char devtype[WPS_DEV_TYPE_BUFSIZE];
1190
1191         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1192                 " p2p_dev_addr=" MACSTR
1193                 " pri_dev_type=%s name='%s' config_methods=0x%x "
1194                 "dev_capab=0x%x group_capab=0x%x",
1195                 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1196                 wps_dev_type_bin2str(info->pri_dev_type, devtype,
1197                                      sizeof(devtype)),
1198                 info->device_name, info->config_methods,
1199                 info->dev_capab, info->group_capab);
1200 #endif /* CONFIG_NO_STDOUT_DEBUG */
1201
1202         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1203 }
1204
1205
1206 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1207 {
1208         struct wpa_supplicant *wpa_s = ctx;
1209
1210         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1211                 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1212
1213         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1214 }
1215
1216
1217 static int wpas_start_listen(void *ctx, unsigned int freq,
1218                              unsigned int duration,
1219                              const struct wpabuf *probe_resp_ie)
1220 {
1221         struct wpa_supplicant *wpa_s = ctx;
1222
1223         wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL);
1224
1225         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1226                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1227                            "report received Probe Request frames");
1228                 return -1;
1229         }
1230
1231         wpa_s->pending_listen_freq = freq;
1232         wpa_s->pending_listen_duration = duration;
1233
1234         if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) {
1235                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1236                            "to remain on channel (%u MHz) for Listen "
1237                            "state", freq);
1238                 wpa_s->pending_listen_freq = 0;
1239                 return -1;
1240         }
1241         wpa_s->off_channel_freq = 0;
1242         wpa_s->roc_waiting_drv_freq = freq;
1243
1244         return 0;
1245 }
1246
1247
1248 static void wpas_stop_listen(void *ctx)
1249 {
1250         struct wpa_supplicant *wpa_s = ctx;
1251         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1252                 wpa_drv_cancel_remain_on_channel(wpa_s);
1253                 wpa_s->off_channel_freq = 0;
1254                 wpa_s->roc_waiting_drv_freq = 0;
1255         }
1256         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1257         wpa_drv_probe_req_report(wpa_s, 0);
1258 }
1259
1260
1261 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1262 {
1263         struct wpa_supplicant *wpa_s = ctx;
1264         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1265 }
1266
1267
1268 static struct p2p_srv_bonjour *
1269 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1270                              const struct wpabuf *query)
1271 {
1272         struct p2p_srv_bonjour *bsrv;
1273         size_t len;
1274
1275         len = wpabuf_len(query);
1276         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1277                          struct p2p_srv_bonjour, list) {
1278                 if (len == wpabuf_len(bsrv->query) &&
1279                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1280                               len) == 0)
1281                         return bsrv;
1282         }
1283         return NULL;
1284 }
1285
1286
1287 static struct p2p_srv_upnp *
1288 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
1289                           const char *service)
1290 {
1291         struct p2p_srv_upnp *usrv;
1292
1293         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1294                          struct p2p_srv_upnp, list) {
1295                 if (version == usrv->version &&
1296                     os_strcmp(service, usrv->service) == 0)
1297                         return usrv;
1298         }
1299         return NULL;
1300 }
1301
1302
1303 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
1304                                         u8 srv_trans_id)
1305 {
1306         u8 *len_pos;
1307
1308         if (wpabuf_tailroom(resp) < 5)
1309                 return;
1310
1311         /* Length (to be filled) */
1312         len_pos = wpabuf_put(resp, 2);
1313         wpabuf_put_u8(resp, srv_proto);
1314         wpabuf_put_u8(resp, srv_trans_id);
1315         /* Status Code */
1316         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
1317         /* Response Data: empty */
1318         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1319 }
1320
1321
1322 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
1323                                 struct wpabuf *resp, u8 srv_trans_id)
1324 {
1325         struct p2p_srv_bonjour *bsrv;
1326         u8 *len_pos;
1327
1328         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
1329
1330         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1331                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1332                 return;
1333         }
1334
1335         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1336                          struct p2p_srv_bonjour, list) {
1337                 if (wpabuf_tailroom(resp) <
1338                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
1339                         return;
1340                 /* Length (to be filled) */
1341                 len_pos = wpabuf_put(resp, 2);
1342                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1343                 wpabuf_put_u8(resp, srv_trans_id);
1344                 /* Status Code */
1345                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1346                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1347                                   wpabuf_head(bsrv->resp),
1348                                   wpabuf_len(bsrv->resp));
1349                 /* Response Data */
1350                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1351                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1352                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1353                              2);
1354         }
1355 }
1356
1357
1358 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
1359                                 struct wpabuf *resp, u8 srv_trans_id,
1360                                 const u8 *query, size_t query_len)
1361 {
1362         struct p2p_srv_bonjour *bsrv;
1363         struct wpabuf buf;
1364         u8 *len_pos;
1365
1366         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
1367                           query, query_len);
1368         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1369                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1370                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
1371                                             srv_trans_id);
1372                 return;
1373         }
1374
1375         if (query_len == 0) {
1376                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1377                 return;
1378         }
1379
1380         if (wpabuf_tailroom(resp) < 5)
1381                 return;
1382         /* Length (to be filled) */
1383         len_pos = wpabuf_put(resp, 2);
1384         wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1385         wpabuf_put_u8(resp, srv_trans_id);
1386
1387         wpabuf_set(&buf, query, query_len);
1388         bsrv = wpas_p2p_service_get_bonjour(wpa_s, &buf);
1389         if (bsrv == NULL) {
1390                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
1391                            "available");
1392
1393                 /* Status Code */
1394                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1395                 /* Response Data: empty */
1396                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1397                              2);
1398                 return;
1399         }
1400
1401         /* Status Code */
1402         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1403         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1404                           wpabuf_head(bsrv->resp), wpabuf_len(bsrv->resp));
1405
1406         if (wpabuf_tailroom(resp) >=
1407             wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) {
1408                 /* Response Data */
1409                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1410                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1411         }
1412         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1413 }
1414
1415
1416 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
1417                              struct wpabuf *resp, u8 srv_trans_id)
1418 {
1419         struct p2p_srv_upnp *usrv;
1420         u8 *len_pos;
1421
1422         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
1423
1424         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1425                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1426                 return;
1427         }
1428
1429         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1430                          struct p2p_srv_upnp, list) {
1431                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
1432                         return;
1433
1434                 /* Length (to be filled) */
1435                 len_pos = wpabuf_put(resp, 2);
1436                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
1437                 wpabuf_put_u8(resp, srv_trans_id);
1438
1439                 /* Status Code */
1440                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1441                 /* Response Data */
1442                 wpabuf_put_u8(resp, usrv->version);
1443                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1444                            usrv->service);
1445                 wpabuf_put_str(resp, usrv->service);
1446                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1447                              2);
1448         }
1449 }
1450
1451
1452 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
1453                              struct wpabuf *resp, u8 srv_trans_id,
1454                              const u8 *query, size_t query_len)
1455 {
1456         struct p2p_srv_upnp *usrv;
1457         u8 *len_pos;
1458         u8 version;
1459         char *str;
1460         int count = 0;
1461
1462         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
1463                           query, query_len);
1464
1465         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1466                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1467                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
1468                                             srv_trans_id);
1469                 return;
1470         }
1471
1472         if (query_len == 0) {
1473                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1474                 return;
1475         }
1476
1477         if (wpabuf_tailroom(resp) < 5)
1478                 return;
1479
1480         /* Length (to be filled) */
1481         len_pos = wpabuf_put(resp, 2);
1482         wpabuf_put_u8(resp, P2P_SERV_UPNP);
1483         wpabuf_put_u8(resp, srv_trans_id);
1484
1485         version = query[0];
1486         str = os_malloc(query_len);
1487         if (str == NULL)
1488                 return;
1489         os_memcpy(str, query + 1, query_len - 1);
1490         str[query_len - 1] = '\0';
1491
1492         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1493                          struct p2p_srv_upnp, list) {
1494                 if (version != usrv->version)
1495                         continue;
1496
1497                 if (os_strcmp(str, "ssdp:all") != 0 &&
1498                     os_strstr(usrv->service, str) == NULL)
1499                         continue;
1500
1501                 if (wpabuf_tailroom(resp) < 2)
1502                         break;
1503                 if (count == 0) {
1504                         /* Status Code */
1505                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1506                         /* Response Data */
1507                         wpabuf_put_u8(resp, version);
1508                 } else
1509                         wpabuf_put_u8(resp, ',');
1510
1511                 count++;
1512
1513                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1514                            usrv->service);
1515                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
1516                         break;
1517                 wpabuf_put_str(resp, usrv->service);
1518         }
1519         os_free(str);
1520
1521         if (count == 0) {
1522                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
1523                            "available");
1524                 /* Status Code */
1525                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1526                 /* Response Data: empty */
1527         }
1528
1529         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1530 }
1531
1532
1533 #ifdef CONFIG_WIFI_DISPLAY
1534 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
1535                             struct wpabuf *resp, u8 srv_trans_id,
1536                             const u8 *query, size_t query_len)
1537 {
1538         const u8 *pos;
1539         u8 role;
1540         u8 *len_pos;
1541
1542         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
1543
1544         if (!wpa_s->global->wifi_display) {
1545                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
1546                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
1547                                             srv_trans_id);
1548                 return;
1549         }
1550
1551         if (query_len < 1) {
1552                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
1553                            "Role");
1554                 return;
1555         }
1556
1557         if (wpabuf_tailroom(resp) < 5)
1558                 return;
1559
1560         pos = query;
1561         role = *pos++;
1562         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
1563
1564         /* TODO: role specific handling */
1565
1566         /* Length (to be filled) */
1567         len_pos = wpabuf_put(resp, 2);
1568         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
1569         wpabuf_put_u8(resp, srv_trans_id);
1570         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
1571
1572         while (pos < query + query_len) {
1573                 if (*pos < MAX_WFD_SUBELEMS &&
1574                     wpa_s->global->wfd_subelem[*pos] &&
1575                     wpabuf_tailroom(resp) >=
1576                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
1577                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
1578                                    "subelement %u", *pos);
1579                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
1580                 }
1581                 pos++;
1582         }
1583
1584         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1585 }
1586 #endif /* CONFIG_WIFI_DISPLAY */
1587
1588
1589 void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
1590                      u16 update_indic, const u8 *tlvs, size_t tlvs_len)
1591 {
1592         struct wpa_supplicant *wpa_s = ctx;
1593         const u8 *pos = tlvs;
1594         const u8 *end = tlvs + tlvs_len;
1595         const u8 *tlv_end;
1596         u16 slen;
1597         struct wpabuf *resp;
1598         u8 srv_proto, srv_trans_id;
1599         size_t buf_len;
1600         char *buf;
1601
1602         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
1603                     tlvs, tlvs_len);
1604         buf_len = 2 * tlvs_len + 1;
1605         buf = os_malloc(buf_len);
1606         if (buf) {
1607                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1608                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
1609                              MACSTR " %u %u %s",
1610                              freq, MAC2STR(sa), dialog_token, update_indic,
1611                              buf);
1612                 os_free(buf);
1613         }
1614
1615         if (wpa_s->p2p_sd_over_ctrl_iface) {
1616                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1617                                            update_indic, tlvs, tlvs_len);
1618                 return; /* to be processed by an external program */
1619         }
1620
1621         resp = wpabuf_alloc(10000);
1622         if (resp == NULL)
1623                 return;
1624
1625         while (pos + 1 < end) {
1626                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
1627                 slen = WPA_GET_LE16(pos);
1628                 pos += 2;
1629                 if (pos + slen > end || slen < 2) {
1630                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
1631                                    "length");
1632                         wpabuf_free(resp);
1633                         return;
1634                 }
1635                 tlv_end = pos + slen;
1636
1637                 srv_proto = *pos++;
1638                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1639                            srv_proto);
1640                 srv_trans_id = *pos++;
1641                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1642                            srv_trans_id);
1643
1644                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
1645                             pos, tlv_end - pos);
1646
1647
1648                 if (wpa_s->force_long_sd) {
1649                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
1650                                    "response");
1651                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1652                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1653                         goto done;
1654                 }
1655
1656                 switch (srv_proto) {
1657                 case P2P_SERV_ALL_SERVICES:
1658                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
1659                                    "for all services");
1660                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
1661                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1662                                 wpa_printf(MSG_DEBUG, "P2P: No service "
1663                                            "discovery protocols available");
1664                                 wpas_sd_add_proto_not_avail(
1665                                         resp, P2P_SERV_ALL_SERVICES,
1666                                         srv_trans_id);
1667                                 break;
1668                         }
1669                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1670                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1671                         break;
1672                 case P2P_SERV_BONJOUR:
1673                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
1674                                             pos, tlv_end - pos);
1675                         break;
1676                 case P2P_SERV_UPNP:
1677                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
1678                                          pos, tlv_end - pos);
1679                         break;
1680 #ifdef CONFIG_WIFI_DISPLAY
1681                 case P2P_SERV_WIFI_DISPLAY:
1682                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
1683                                         pos, tlv_end - pos);
1684                         break;
1685 #endif /* CONFIG_WIFI_DISPLAY */
1686                 default:
1687                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
1688                                    "protocol %u", srv_proto);
1689                         wpas_sd_add_proto_not_avail(resp, srv_proto,
1690                                                     srv_trans_id);
1691                         break;
1692                 }
1693
1694                 pos = tlv_end;
1695         }
1696
1697 done:
1698         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1699                                    update_indic, tlvs, tlvs_len);
1700
1701         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
1702
1703         wpabuf_free(resp);
1704 }
1705
1706
1707 void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
1708                       const u8 *tlvs, size_t tlvs_len)
1709 {
1710         struct wpa_supplicant *wpa_s = ctx;
1711         const u8 *pos = tlvs;
1712         const u8 *end = tlvs + tlvs_len;
1713         const u8 *tlv_end;
1714         u16 slen;
1715         size_t buf_len;
1716         char *buf;
1717
1718         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
1719                     tlvs, tlvs_len);
1720         if (tlvs_len > 1500) {
1721                 /* TODO: better way for handling this */
1722                 wpa_msg_ctrl(wpa_s, MSG_INFO,
1723                              P2P_EVENT_SERV_DISC_RESP MACSTR
1724                              " %u <long response: %u bytes>",
1725                              MAC2STR(sa), update_indic,
1726                              (unsigned int) tlvs_len);
1727         } else {
1728                 buf_len = 2 * tlvs_len + 1;
1729                 buf = os_malloc(buf_len);
1730                 if (buf) {
1731                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1732                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1733                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
1734                                      MAC2STR(sa), update_indic, buf);
1735                         os_free(buf);
1736                 }
1737         }
1738
1739         while (pos < end) {
1740                 u8 srv_proto, srv_trans_id, status;
1741
1742                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
1743                 slen = WPA_GET_LE16(pos);
1744                 pos += 2;
1745                 if (pos + slen > end || slen < 3) {
1746                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
1747                                    "length");
1748                         return;
1749                 }
1750                 tlv_end = pos + slen;
1751
1752                 srv_proto = *pos++;
1753                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1754                            srv_proto);
1755                 srv_trans_id = *pos++;
1756                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1757                            srv_trans_id);
1758                 status = *pos++;
1759                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
1760                            status);
1761
1762                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
1763                             pos, tlv_end - pos);
1764
1765                 pos = tlv_end;
1766         }
1767
1768         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
1769 }
1770
1771
1772 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
1773                         const struct wpabuf *tlvs)
1774 {
1775         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1776                 return wpa_drv_p2p_sd_request(wpa_s, dst, tlvs);
1777         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1778                 return 0;
1779         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
1780 }
1781
1782
1783 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
1784                              u8 version, const char *query)
1785 {
1786         struct wpabuf *tlvs;
1787         u64 ret;
1788
1789         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
1790         if (tlvs == NULL)
1791                 return 0;
1792         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
1793         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
1794         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
1795         wpabuf_put_u8(tlvs, version);
1796         wpabuf_put_str(tlvs, query);
1797         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
1798         wpabuf_free(tlvs);
1799         return ret;
1800 }
1801
1802
1803 #ifdef CONFIG_WIFI_DISPLAY
1804
1805 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
1806                                    const struct wpabuf *tlvs)
1807 {
1808         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1809                 return 0;
1810         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1811                 return 0;
1812         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
1813 }
1814
1815
1816 #define MAX_WFD_SD_SUBELEMS 20
1817
1818 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
1819                                 const char *subelems)
1820 {
1821         u8 *len;
1822         const char *pos;
1823         int val;
1824         int count = 0;
1825
1826         len = wpabuf_put(tlvs, 2);
1827         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
1828         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
1829
1830         wpabuf_put_u8(tlvs, role);
1831
1832         pos = subelems;
1833         while (*pos) {
1834                 val = atoi(pos);
1835                 if (val >= 0 && val < 256) {
1836                         wpabuf_put_u8(tlvs, val);
1837                         count++;
1838                         if (count == MAX_WFD_SD_SUBELEMS)
1839                                 break;
1840                 }
1841                 pos = os_strchr(pos + 1, ',');
1842                 if (pos == NULL)
1843                         break;
1844                 pos++;
1845         }
1846
1847         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
1848 }
1849
1850
1851 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
1852                                      const u8 *dst, const char *role)
1853 {
1854         struct wpabuf *tlvs;
1855         u64 ret;
1856         const char *subelems;
1857         u8 id = 1;
1858
1859         subelems = os_strchr(role, ' ');
1860         if (subelems == NULL)
1861                 return 0;
1862         subelems++;
1863
1864         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
1865         if (tlvs == NULL)
1866                 return 0;
1867
1868         if (os_strstr(role, "[source]"))
1869                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
1870         if (os_strstr(role, "[pri-sink]"))
1871                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
1872         if (os_strstr(role, "[sec-sink]"))
1873                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
1874         if (os_strstr(role, "[source+sink]"))
1875                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
1876
1877         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
1878         wpabuf_free(tlvs);
1879         return ret;
1880 }
1881
1882 #endif /* CONFIG_WIFI_DISPLAY */
1883
1884
1885 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
1886 {
1887         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1888                 return wpa_drv_p2p_sd_cancel_request(wpa_s, req);
1889         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1890                 return -1;
1891         return p2p_sd_cancel_request(wpa_s->global->p2p,
1892                                      (void *) (uintptr_t) req);
1893 }
1894
1895
1896 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
1897                           const u8 *dst, u8 dialog_token,
1898                           const struct wpabuf *resp_tlvs)
1899 {
1900         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
1901                 wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token,
1902                                         resp_tlvs);
1903                 return;
1904         }
1905         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1906                 return;
1907         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
1908                         resp_tlvs);
1909 }
1910
1911 #ifdef ANDROID_P2P
1912 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s, int action)
1913 #else
1914 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
1915 #endif
1916 {
1917         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
1918                 wpa_drv_p2p_service_update(wpa_s);
1919                 return;
1920         }
1921         if (wpa_s->global->p2p)
1922 #ifdef ANDROID_P2P
1923                 p2p_sd_service_update(wpa_s->global->p2p, action);
1924 #else
1925                 p2p_sd_service_update(wpa_s->global->p2p);
1926 #endif
1927 }
1928
1929
1930 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
1931 {
1932         dl_list_del(&bsrv->list);
1933         wpabuf_free(bsrv->query);
1934         wpabuf_free(bsrv->resp);
1935         os_free(bsrv);
1936 }
1937
1938
1939 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
1940 {
1941         dl_list_del(&usrv->list);
1942         os_free(usrv->service);
1943         os_free(usrv);
1944 }
1945
1946
1947 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
1948 {
1949         struct p2p_srv_bonjour *bsrv, *bn;
1950         struct p2p_srv_upnp *usrv, *un;
1951
1952         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
1953                               struct p2p_srv_bonjour, list)
1954                 wpas_p2p_srv_bonjour_free(bsrv);
1955
1956         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
1957                               struct p2p_srv_upnp, list)
1958                 wpas_p2p_srv_upnp_free(usrv);
1959
1960 #ifdef ANDROID_P2P
1961         wpas_p2p_sd_service_update(wpa_s, SRV_FLUSH);
1962 #else
1963         wpas_p2p_sd_service_update(wpa_s);
1964 #endif
1965 }
1966
1967
1968 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
1969                                  struct wpabuf *query, struct wpabuf *resp)
1970 {
1971         struct p2p_srv_bonjour *bsrv;
1972
1973         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
1974         if (bsrv) {
1975                 wpabuf_free(query);
1976                 wpabuf_free(bsrv->resp);
1977                 bsrv->resp = resp;
1978                 return 0;
1979         }
1980
1981         bsrv = os_zalloc(sizeof(*bsrv));
1982         if (bsrv == NULL)
1983                 return -1;
1984         bsrv->query = query;
1985         bsrv->resp = resp;
1986         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
1987
1988 #ifdef ANDROID_P2P
1989         wpas_p2p_sd_service_update(wpa_s, SRV_ADD);
1990 #else
1991         wpas_p2p_sd_service_update(wpa_s);
1992 #endif
1993         return 0;
1994 }
1995
1996
1997 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
1998                                  const struct wpabuf *query)
1999 {
2000         struct p2p_srv_bonjour *bsrv;
2001
2002         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
2003         if (bsrv == NULL)
2004                 return -1;
2005         wpas_p2p_srv_bonjour_free(bsrv);
2006 #ifdef ANDROID_P2P
2007         wpas_p2p_sd_service_update(wpa_s, SRV_DEL);
2008 #else
2009         wpas_p2p_sd_service_update(wpa_s);
2010 #endif
2011         return 0;
2012 }
2013
2014
2015 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2016                               const char *service)
2017 {
2018         struct p2p_srv_upnp *usrv;
2019
2020         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2021                 return 0; /* Already listed */
2022         usrv = os_zalloc(sizeof(*usrv));
2023         if (usrv == NULL)
2024                 return -1;
2025         usrv->version = version;
2026         usrv->service = os_strdup(service);
2027         if (usrv->service == NULL) {
2028                 os_free(usrv);
2029                 return -1;
2030         }
2031         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2032
2033 #ifdef ANDROID_P2P
2034         wpas_p2p_sd_service_update(wpa_s, SRV_ADD);
2035 #else
2036         wpas_p2p_sd_service_update(wpa_s);
2037 #endif
2038         return 0;
2039 }
2040
2041
2042 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2043                               const char *service)
2044 {
2045         struct p2p_srv_upnp *usrv;
2046
2047         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2048         if (usrv == NULL)
2049                 return -1;
2050         wpas_p2p_srv_upnp_free(usrv);
2051 #ifdef ANDROID_P2P
2052         wpas_p2p_sd_service_update(wpa_s, SRV_DEL);
2053 #else
2054         wpas_p2p_sd_service_update(wpa_s);
2055 #endif
2056         return 0;
2057 }
2058
2059
2060 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2061                                          const u8 *peer, const char *params,
2062                                          unsigned int generated_pin)
2063 {
2064         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s",
2065                 MAC2STR(peer), generated_pin, params);
2066 }
2067
2068
2069 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2070                                         const u8 *peer, const char *params)
2071 {
2072         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s",
2073                 MAC2STR(peer), params);
2074 }
2075
2076
2077 void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2078                         const u8 *dev_addr, const u8 *pri_dev_type,
2079                         const char *dev_name, u16 supp_config_methods,
2080                         u8 dev_capab, u8 group_capab, const u8 *group_id,
2081                         size_t group_id_len)
2082 {
2083         struct wpa_supplicant *wpa_s = ctx;
2084         char devtype[WPS_DEV_TYPE_BUFSIZE];
2085         char params[300];
2086         u8 empty_dev_type[8];
2087         unsigned int generated_pin = 0;
2088         struct wpa_supplicant *group = NULL;
2089
2090         if (group_id) {
2091                 for (group = wpa_s->global->ifaces; group; group = group->next)
2092                 {
2093                         struct wpa_ssid *s = group->current_ssid;
2094                         if (s != NULL &&
2095                             s->mode == WPAS_MODE_P2P_GO &&
2096                             group_id_len - ETH_ALEN == s->ssid_len &&
2097                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2098                                       s->ssid_len) == 0)
2099                                 break;
2100                 }
2101         }
2102
2103         if (pri_dev_type == NULL) {
2104                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2105                 pri_dev_type = empty_dev_type;
2106         }
2107         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2108                     " pri_dev_type=%s name='%s' config_methods=0x%x "
2109                     "dev_capab=0x%x group_capab=0x%x%s%s",
2110                     MAC2STR(dev_addr),
2111                     wps_dev_type_bin2str(pri_dev_type, devtype,
2112                                          sizeof(devtype)),
2113                     dev_name, supp_config_methods, dev_capab, group_capab,
2114                     group ? " group=" : "",
2115                     group ? group->ifname : "");
2116         params[sizeof(params) - 1] = '\0';
2117
2118         if (config_methods & WPS_CONFIG_DISPLAY) {
2119                 generated_pin = wps_generate_pin();
2120                 wpas_prov_disc_local_display(wpa_s, peer, params,
2121                                              generated_pin);
2122         } else if (config_methods & WPS_CONFIG_KEYPAD)
2123                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2124         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2125                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR
2126                         "%s", MAC2STR(peer), params);
2127
2128         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2129                                             P2P_PROV_DISC_SUCCESS,
2130                                             config_methods, generated_pin);
2131 }
2132
2133
2134 void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2135 {
2136         struct wpa_supplicant *wpa_s = ctx;
2137         unsigned int generated_pin = 0;
2138         char params[20];
2139
2140         if (wpa_s->pending_pd_before_join &&
2141             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2142              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2143                 wpa_s->pending_pd_before_join = 0;
2144                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2145                            "join-existing-group operation");
2146                 wpas_p2p_join_start(wpa_s);
2147                 return;
2148         }
2149
2150         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2151             wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2152                 os_snprintf(params, sizeof(params), " peer_go=%d",
2153                             wpa_s->pending_pd_use == AUTO_PD_JOIN);
2154         else
2155                 params[0] = '\0';
2156
2157         if (config_methods & WPS_CONFIG_DISPLAY)
2158                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2159         else if (config_methods & WPS_CONFIG_KEYPAD) {
2160                 generated_pin = wps_generate_pin();
2161                 wpas_prov_disc_local_display(wpa_s, peer, params,
2162                                              generated_pin);
2163         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2164                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR
2165                         "%s", MAC2STR(peer), params);
2166
2167         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2168                                             P2P_PROV_DISC_SUCCESS,
2169                                             config_methods, generated_pin);
2170 }
2171
2172
2173 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2174                                 enum p2p_prov_disc_status status)
2175 {
2176         struct wpa_supplicant *wpa_s = ctx;
2177
2178         if (wpa_s->p2p_fallback_to_go_neg) {
2179                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2180                         "failed - fall back to GO Negotiation");
2181                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2182                 return;
2183         }
2184
2185         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2186                 " p2p_dev_addr=" MACSTR " status=%d",
2187                 MAC2STR(peer), status);
2188
2189         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2190                                             status, 0, 0);
2191 }
2192
2193
2194 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2195                                   const u8 *go_dev_addr, const u8 *ssid,
2196                                   size_t ssid_len, int *go, u8 *group_bssid,
2197                                   int *force_freq, int persistent_group)
2198 {
2199         struct wpa_supplicant *wpa_s = ctx;
2200         struct wpa_ssid *s;
2201         u8 cur_bssid[ETH_ALEN];
2202         int res;
2203         struct wpa_supplicant *grp;
2204
2205         if (!persistent_group) {
2206                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2207                            " to join an active group", MAC2STR(sa));
2208                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2209                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2210                      == 0 ||
2211                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2212                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2213                                    "authorized invitation");
2214                         goto accept_inv;
2215                 }
2216                 /*
2217                  * Do not accept the invitation automatically; notify user and
2218                  * request approval.
2219                  */
2220                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2221         }
2222
2223         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2224         if (grp) {
2225                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2226                            "running persistent group");
2227                 if (*go)
2228                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2229                 goto accept_inv;
2230         }
2231
2232         if (!wpa_s->conf->persistent_reconnect)
2233                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2234
2235         for (s = wpa_s->conf->ssid; s; s = s->next) {
2236                 if (s->disabled == 2 &&
2237                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2238                     s->ssid_len == ssid_len &&
2239                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2240                         break;
2241         }
2242
2243         if (!s) {
2244                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2245                            " requested reinvocation of an unknown group",
2246                            MAC2STR(sa));
2247                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2248         }
2249
2250         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2251                 *go = 1;
2252                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2253                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2254                                    "interface is already in use - reject "
2255                                    "invitation");
2256                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2257                 }
2258                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2259         } else if (s->mode == WPAS_MODE_P2P_GO) {
2260                 *go = 1;
2261                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2262                 {
2263                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2264                                    "interface address for the group");
2265                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2266                 }
2267                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2268                           ETH_ALEN);
2269         }
2270
2271 accept_inv:
2272         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 &&
2273             wpa_s->assoc_freq) {
2274                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2275                            "the channel we are already using");
2276                 *force_freq = wpa_s->assoc_freq;
2277         }
2278
2279         res = wpa_drv_shared_freq(wpa_s);
2280         if (res > 0) {
2281                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2282                            "with the channel we are already using on a "
2283                            "shared interface");
2284                 *force_freq = res;
2285         }
2286
2287         return P2P_SC_SUCCESS;
2288 }
2289
2290
2291 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2292                                      const u8 *ssid, size_t ssid_len,
2293                                      const u8 *go_dev_addr, u8 status,
2294                                      int op_freq)
2295 {
2296         struct wpa_supplicant *wpa_s = ctx;
2297         struct wpa_ssid *s;
2298
2299         for (s = wpa_s->conf->ssid; s; s = s->next) {
2300                 if (s->disabled == 2 &&
2301                     s->ssid_len == ssid_len &&
2302                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2303                         break;
2304         }
2305
2306         if (status == P2P_SC_SUCCESS) {
2307                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2308                            " was accepted; op_freq=%d MHz",
2309                            MAC2STR(sa), op_freq);
2310                 if (s) {
2311                         wpas_p2p_group_add_persistent(
2312                                 wpa_s, s, s->mode == WPAS_MODE_P2P_GO, 0, 0);
2313                 } else if (bssid) {
2314                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2315                                       wpa_s->p2p_wps_method, 0);
2316                 }
2317                 return;
2318         }
2319
2320         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2321                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2322                            " was rejected (status %u)", MAC2STR(sa), status);
2323                 return;
2324         }
2325
2326         if (!s) {
2327                 if (bssid) {
2328                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2329                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2330                                 " bssid=" MACSTR " unknown-network",
2331                                 MAC2STR(sa), MAC2STR(go_dev_addr),
2332                                 MAC2STR(bssid));
2333                 } else {
2334                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2335                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2336                                 " unknown-network",
2337                                 MAC2STR(sa), MAC2STR(go_dev_addr));
2338                 }
2339                 return;
2340         }
2341
2342         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR
2343                 " persistent=%d", MAC2STR(sa), s->id);
2344 }
2345
2346
2347 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid)
2348 {
2349         struct wpa_supplicant *wpa_s = ctx;
2350         struct wpa_ssid *ssid;
2351
2352         if (bssid) {
2353                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2354                         "status=%d " MACSTR,
2355                         status, MAC2STR(bssid));
2356         } else {
2357                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2358                         "status=%d ", status);
2359         }
2360         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2361
2362         if (wpa_s->pending_invite_ssid_id == -1)
2363                 return; /* Invitation to active group */
2364
2365         if (status != P2P_SC_SUCCESS) {
2366                 wpas_p2p_remove_pending_group_interface(wpa_s);
2367                 return;
2368         }
2369
2370         ssid = wpa_config_get_network(wpa_s->conf,
2371                                       wpa_s->pending_invite_ssid_id);
2372         if (ssid == NULL) {
2373                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2374                            "data matching with invitation");
2375                 return;
2376         }
2377
2378         wpas_p2p_group_add_persistent(wpa_s, ssid,
2379                                       ssid->mode == WPAS_MODE_P2P_GO,
2380                                       wpa_s->p2p_persistent_go_freq,
2381                                       wpa_s->p2p_go_ht40);
2382 }
2383
2384
2385 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
2386                                     unsigned int freq)
2387 {
2388         unsigned int i;
2389
2390         if (global->p2p_disallow_freq == NULL)
2391                 return 0;
2392
2393         for (i = 0; i < global->num_p2p_disallow_freq; i++) {
2394                 if (freq >= global->p2p_disallow_freq[i].min &&
2395                     freq <= global->p2p_disallow_freq[i].max)
2396                         return 1;
2397         }
2398
2399         return 0;
2400 }
2401
2402
2403 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
2404 {
2405         reg->channel[reg->channels] = chan;
2406         reg->channels++;
2407 }
2408
2409
2410 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
2411                                      struct p2p_channels *chan)
2412 {
2413         int i, cla = 0;
2414
2415         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
2416                    "band");
2417
2418         /* Operating class 81 - 2.4 GHz band channels 1..13 */
2419         chan->reg_class[cla].reg_class = 81;
2420         chan->reg_class[cla].channels = 0;
2421         for (i = 0; i < 11; i++) {
2422                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
2423                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
2424         }
2425         if (chan->reg_class[cla].channels)
2426                 cla++;
2427
2428         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
2429                    "band");
2430
2431         /* Operating class 115 - 5 GHz, channels 36-48 */
2432         chan->reg_class[cla].reg_class = 115;
2433         chan->reg_class[cla].channels = 0;
2434         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
2435                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
2436         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
2437                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
2438         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
2439                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
2440         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
2441                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
2442         if (chan->reg_class[cla].channels)
2443                 cla++;
2444
2445         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
2446                    "band");
2447
2448         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
2449         chan->reg_class[cla].reg_class = 124;
2450         chan->reg_class[cla].channels = 0;
2451         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
2452                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
2453         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
2454                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
2455         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
2456                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
2457         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
2458                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
2459         if (chan->reg_class[cla].channels)
2460                 cla++;
2461
2462         chan->reg_classes = cla;
2463         return 0;
2464 }
2465
2466
2467 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
2468                                           u16 num_modes,
2469                                           enum hostapd_hw_mode mode)
2470 {
2471         u16 i;
2472
2473         for (i = 0; i < num_modes; i++) {
2474                 if (modes[i].mode == mode)
2475                         return &modes[i];
2476         }
2477
2478         return NULL;
2479 }
2480
2481
2482 static int has_channel(struct wpa_global *global,
2483                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
2484 {
2485         int i;
2486         unsigned int freq;
2487
2488         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
2489                 chan * 5;
2490         if (wpas_p2p_disallowed_freq(global, freq))
2491                 return 0;
2492
2493         for (i = 0; i < mode->num_channels; i++) {
2494                 if (mode->channels[i].chan == chan) {
2495                         if (flags)
2496                                 *flags = mode->channels[i].flag;
2497                         return !(mode->channels[i].flag &
2498                                  (HOSTAPD_CHAN_DISABLED |
2499                                   HOSTAPD_CHAN_PASSIVE_SCAN |
2500                                   HOSTAPD_CHAN_NO_IBSS |
2501                                   HOSTAPD_CHAN_RADAR));
2502                 }
2503         }
2504
2505         return 0;
2506 }
2507
2508
2509 struct p2p_oper_class_map {
2510         enum hostapd_hw_mode mode;
2511         u8 op_class;
2512         u8 min_chan;
2513         u8 max_chan;
2514         u8 inc;
2515         enum { BW20, BW40PLUS, BW40MINUS } bw;
2516 };
2517
2518 static struct p2p_oper_class_map op_class[] = {
2519         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
2520         { HOSTAPD_MODE_IEEE80211G, 82, 14, 14, 1, BW20 },
2521 #if 0 /* Do not enable HT40 on 2 GHz for now */
2522         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
2523         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
2524 #endif
2525         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
2526         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
2527         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
2528         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
2529         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
2530         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
2531         { -1, 0, 0, 0, 0, BW20 }
2532 };
2533
2534
2535 static int wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
2536                                    struct hostapd_hw_modes *mode,
2537                                    u8 channel, u8 bw)
2538 {
2539         int flag;
2540
2541         if (!has_channel(wpa_s->global, mode, channel, &flag))
2542                 return -1;
2543         if (bw == BW40MINUS &&
2544             (!(flag & HOSTAPD_CHAN_HT40MINUS) ||
2545              !has_channel(wpa_s->global, mode, channel - 4, NULL)))
2546                 return 0;
2547         if (bw == BW40PLUS &&
2548             (!(flag & HOSTAPD_CHAN_HT40PLUS) ||
2549              !has_channel(wpa_s->global, mode, channel + 4, NULL)))
2550                 return 0;
2551         return 1;
2552 }
2553
2554
2555 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
2556                                    struct p2p_channels *chan)
2557 {
2558         struct hostapd_hw_modes *mode;
2559         int cla, op;
2560
2561         if (wpa_s->hw.modes == NULL) {
2562                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
2563                            "of all supported channels; assume dualband "
2564                            "support");
2565                 return wpas_p2p_default_channels(wpa_s, chan);
2566         }
2567
2568         cla = 0;
2569
2570         for (op = 0; op_class[op].op_class; op++) {
2571                 struct p2p_oper_class_map *o = &op_class[op];
2572                 u8 ch;
2573                 struct p2p_reg_class *reg = NULL;
2574
2575                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
2576                 if (mode == NULL)
2577                         continue;
2578                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2579                         if (wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw) < 1)
2580                                 continue;
2581                         if (reg == NULL) {
2582                                 wpa_printf(MSG_DEBUG, "P2P: Add operating "
2583                                            "class %u", o->op_class);
2584                                 reg = &chan->reg_class[cla];
2585                                 cla++;
2586                                 reg->reg_class = o->op_class;
2587                         }
2588                         reg->channel[reg->channels] = ch;
2589                         reg->channels++;
2590                 }
2591                 if (reg) {
2592                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
2593                                     reg->channel, reg->channels);
2594                 }
2595         }
2596
2597         chan->reg_classes = cla;
2598
2599         return 0;
2600 }
2601
2602
2603 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
2604                            struct hostapd_hw_modes *mode, u8 channel)
2605 {
2606         int op, ret;
2607
2608         for (op = 0; op_class[op].op_class; op++) {
2609                 struct p2p_oper_class_map *o = &op_class[op];
2610                 u8 ch;
2611
2612                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2613                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
2614                             o->bw == BW20 || ch != channel)
2615                                 continue;
2616                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
2617                         if (ret < 0)
2618                                 continue;
2619                         else if (ret > 0)
2620                                 return (o->bw == BW40MINUS) ? -1 : 1;
2621                         else
2622                                 return 0;
2623                 }
2624         }
2625         return 0;
2626 }
2627
2628
2629 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
2630                         size_t buf_len)
2631 {
2632         struct wpa_supplicant *wpa_s = ctx;
2633
2634         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2635                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
2636                         break;
2637         }
2638         if (wpa_s == NULL)
2639                 return -1;
2640
2641         return wpa_drv_get_noa(wpa_s, buf, buf_len);
2642 }
2643
2644
2645 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
2646 {
2647         struct wpa_supplicant *wpa_s = ctx;
2648
2649         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2650                 struct wpa_ssid *ssid = wpa_s->current_ssid;
2651                 if (ssid == NULL)
2652                         continue;
2653                 if (ssid->mode != WPAS_MODE_INFRA)
2654                         continue;
2655                 if (wpa_s->wpa_state != WPA_COMPLETED &&
2656                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
2657                         continue;
2658                 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
2659                         return 1;
2660         }
2661
2662         return 0;
2663 }
2664
2665
2666 /**
2667  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
2668  * @global: Pointer to global data from wpa_supplicant_init()
2669  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2670  * Returns: 0 on success, -1 on failure
2671  */
2672 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
2673 {
2674         struct p2p_config p2p;
2675         unsigned int r;
2676         int i;
2677
2678         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
2679                 return 0;
2680
2681         if (global->p2p)
2682                 return 0;
2683
2684         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2685                 struct p2p_params params;
2686
2687                 wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management");
2688                 os_memset(&params, 0, sizeof(params));
2689                 params.dev_name = wpa_s->conf->device_name;
2690                 os_memcpy(params.pri_dev_type, wpa_s->conf->device_type,
2691                           WPS_DEV_TYPE_LEN);
2692                 params.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2693                 os_memcpy(params.sec_dev_type,
2694                           wpa_s->conf->sec_device_type,
2695                           params.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2696
2697                 if (wpa_drv_p2p_set_params(wpa_s, &params) < 0)
2698                         return -1;
2699
2700                 return 0;
2701         }
2702
2703         os_memset(&p2p, 0, sizeof(p2p));
2704         p2p.msg_ctx = wpa_s;
2705         p2p.cb_ctx = wpa_s;
2706         p2p.p2p_scan = wpas_p2p_scan;
2707         p2p.send_action = wpas_send_action;
2708         p2p.send_action_done = wpas_send_action_done;
2709         p2p.go_neg_completed = wpas_go_neg_completed;
2710         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
2711         p2p.dev_found = wpas_dev_found;
2712         p2p.dev_lost = wpas_dev_lost;
2713         p2p.start_listen = wpas_start_listen;
2714         p2p.stop_listen = wpas_stop_listen;
2715         p2p.send_probe_resp = wpas_send_probe_resp;
2716         p2p.sd_request = wpas_sd_request;
2717         p2p.sd_response = wpas_sd_response;
2718         p2p.prov_disc_req = wpas_prov_disc_req;
2719         p2p.prov_disc_resp = wpas_prov_disc_resp;
2720         p2p.prov_disc_fail = wpas_prov_disc_fail;
2721         p2p.invitation_process = wpas_invitation_process;
2722         p2p.invitation_received = wpas_invitation_received;
2723         p2p.invitation_result = wpas_invitation_result;
2724         p2p.get_noa = wpas_get_noa;
2725         p2p.go_connected = wpas_go_connected;
2726
2727         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
2728         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
2729         p2p.dev_name = wpa_s->conf->device_name;
2730         p2p.manufacturer = wpa_s->conf->manufacturer;
2731         p2p.model_name = wpa_s->conf->model_name;
2732         p2p.model_number = wpa_s->conf->model_number;
2733         p2p.serial_number = wpa_s->conf->serial_number;
2734         if (wpa_s->wps) {
2735                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
2736                 p2p.config_methods = wpa_s->wps->config_methods;
2737         }
2738
2739         if (wpa_s->conf->p2p_listen_reg_class &&
2740             wpa_s->conf->p2p_listen_channel) {
2741                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
2742                 p2p.channel = wpa_s->conf->p2p_listen_channel;
2743         } else {
2744                 p2p.reg_class = 81;
2745                 /*
2746                  * Pick one of the social channels randomly as the listen
2747                  * channel.
2748                  */
2749                 os_get_random((u8 *) &r, sizeof(r));
2750                 p2p.channel = 1 + (r % 3) * 5;
2751         }
2752         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
2753
2754         if (wpa_s->conf->p2p_oper_reg_class &&
2755             wpa_s->conf->p2p_oper_channel) {
2756                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
2757                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
2758                 p2p.cfg_op_channel = 1;
2759                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
2760                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2761
2762         } else {
2763                 p2p.op_reg_class = 81;
2764                 /*
2765                  * Use random operation channel from (1, 6, 11) if no other
2766                  * preference is indicated.
2767                  */
2768                 os_get_random((u8 *) &r, sizeof(r));
2769                 p2p.op_channel = 1 + (r % 3) * 5;
2770                 p2p.cfg_op_channel = 0;
2771                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
2772                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2773         }
2774         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
2775                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
2776                 p2p.country[2] = 0x04;
2777         } else
2778                 os_memcpy(p2p.country, "XX\x04", 3);
2779
2780         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) {
2781                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
2782                            "channel list");
2783                 return -1;
2784         }
2785
2786         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
2787                   WPS_DEV_TYPE_LEN);
2788
2789         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2790         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
2791                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2792
2793         p2p.concurrent_operations = !!(wpa_s->drv_flags &
2794                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
2795
2796         p2p.max_peers = 100;
2797
2798         if (wpa_s->conf->p2p_ssid_postfix) {
2799                 p2p.ssid_postfix_len =
2800                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
2801                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
2802                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
2803                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
2804                           p2p.ssid_postfix_len);
2805         }
2806
2807         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
2808
2809 #ifdef ANDROID_P2P
2810         if(wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)
2811                 p2p.p2p_concurrency = P2P_MULTI_CHANNEL_CONCURRENT;
2812         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT)
2813                 p2p.p2p_concurrency = P2P_SINGLE_CHANNEL_CONCURRENT;
2814 #endif
2815
2816         global->p2p = p2p_init(&p2p);
2817         if (global->p2p == NULL)
2818                 return -1;
2819         global->p2p_init_wpa_s = wpa_s;
2820
2821         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
2822                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
2823                         continue;
2824                 p2p_add_wps_vendor_extension(
2825                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
2826         }
2827
2828         return 0;
2829 }
2830
2831
2832 /**
2833  * wpas_p2p_deinit - Deinitialize per-interface P2P data
2834  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2835  *
2836  * This function deinitialize per-interface P2P data.
2837  */
2838 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
2839 {
2840         if (wpa_s->driver && wpa_s->drv_priv)
2841                 wpa_drv_probe_req_report(wpa_s, 0);
2842
2843         if (wpa_s->go_params) {
2844                 /* Clear any stored provisioning info */
2845                 p2p_clear_provisioning_info(
2846                         wpa_s->global->p2p,
2847                         wpa_s->go_params->peer_device_addr);
2848         }
2849
2850         os_free(wpa_s->go_params);
2851         wpa_s->go_params = NULL;
2852         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2853         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2854         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
2855         wpa_s->p2p_long_listen = 0;
2856         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2857         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
2858         wpas_p2p_remove_pending_group_interface(wpa_s);
2859
2860         /* TODO: remove group interface from the driver if this wpa_s instance
2861          * is on top of a P2P group interface */
2862 }
2863
2864
2865 /**
2866  * wpas_p2p_deinit_global - Deinitialize global P2P module
2867  * @global: Pointer to global data from wpa_supplicant_init()
2868  *
2869  * This function deinitializes the global (per device) P2P module.
2870  */
2871 void wpas_p2p_deinit_global(struct wpa_global *global)
2872 {
2873         struct wpa_supplicant *wpa_s, *tmp;
2874
2875         wpa_s = global->ifaces;
2876         if (wpa_s)
2877                 wpas_p2p_service_flush(wpa_s);
2878
2879         if (global->p2p == NULL)
2880                 return;
2881
2882         /* Remove remaining P2P group interfaces */
2883         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
2884                 wpa_s = wpa_s->next;
2885         while (wpa_s) {
2886                 tmp = global->ifaces;
2887                 while (tmp &&
2888                        (tmp == wpa_s ||
2889                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
2890                         tmp = tmp->next;
2891                 }
2892                 if (tmp == NULL)
2893                         break;
2894                 /* Disconnect from the P2P group and deinit the interface */
2895                 wpas_p2p_disconnect(tmp);
2896         }
2897
2898         /*
2899          * Deinit GO data on any possibly remaining interface (if main
2900          * interface is used as GO).
2901          */
2902         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2903                 if (wpa_s->ap_iface)
2904                         wpas_p2p_group_deinit(wpa_s);
2905         }
2906
2907         p2p_deinit(global->p2p);
2908         global->p2p = NULL;
2909         global->p2p_init_wpa_s = NULL;
2910 }
2911
2912
2913 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
2914 {
2915         if (wpa_s->drv_flags &
2916             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
2917              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
2918                 return 1; /* P2P group requires a new interface in every case
2919                            */
2920         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
2921                 return 0; /* driver does not support concurrent operations */
2922         if (wpa_s->global->ifaces->next)
2923                 return 1; /* more that one interface already in use */
2924         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2925                 return 1; /* this interface is already in use */
2926         return 0;
2927 }
2928
2929
2930 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
2931                                  const u8 *peer_addr,
2932                                  enum p2p_wps_method wps_method,
2933                                  int go_intent, const u8 *own_interface_addr,
2934                                  unsigned int force_freq, int persistent_group,
2935                                  struct wpa_ssid *ssid)
2936 {
2937         if (persistent_group && wpa_s->conf->persistent_reconnect)
2938                 persistent_group = 2;
2939
2940         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2941                 return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method,
2942                                            go_intent, own_interface_addr,
2943                                            force_freq, persistent_group);
2944         }
2945
2946         /*
2947          * Increase GO config timeout if HT40 is used since it takes some time
2948          * to scan channels for coex purposes before the BSS can be started.
2949          */
2950         p2p_set_config_timeout(wpa_s->global->p2p,
2951                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
2952
2953         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
2954                            go_intent, own_interface_addr, force_freq,
2955                            persistent_group, ssid ? ssid->ssid : NULL,
2956                            ssid ? ssid->ssid_len : 0,
2957                            wpa_s->p2p_pd_before_go_neg);
2958 }
2959
2960
2961 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
2962                                 const u8 *peer_addr,
2963                                 enum p2p_wps_method wps_method,
2964                                 int go_intent, const u8 *own_interface_addr,
2965                                 unsigned int force_freq, int persistent_group,
2966                                 struct wpa_ssid *ssid)
2967 {
2968         if (persistent_group && wpa_s->conf->persistent_reconnect)
2969                 persistent_group = 2;
2970
2971         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
2972                 return -1;
2973
2974         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
2975                              go_intent, own_interface_addr, force_freq,
2976                              persistent_group, ssid ? ssid->ssid : NULL,
2977                              ssid ? ssid->ssid_len : 0);
2978 }
2979
2980
2981 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
2982 {
2983         wpa_s->p2p_join_scan_count++;
2984         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
2985                    wpa_s->p2p_join_scan_count);
2986         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
2987                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
2988                            " for join operationg - stop join attempt",
2989                            MAC2STR(wpa_s->pending_join_iface_addr));
2990                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2991                 if (wpa_s->p2p_auto_pd) {
2992                         wpa_s->p2p_auto_pd = 0;
2993                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2994                                 " p2p_dev_addr=" MACSTR " status=N/A",
2995                                 MAC2STR(wpa_s->pending_join_dev_addr));
2996                         return;
2997                 }
2998                 wpa_msg(wpa_s->parent, MSG_INFO,
2999                         P2P_EVENT_GROUP_FORMATION_FAILURE);
3000         }
3001 }
3002
3003
3004 static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx, void *timeout_ctx)
3005 {
3006         struct wpa_supplicant *wpa_s = eloop_ctx;
3007         if (!wpa_s->pending_pd_before_join)
3008                 return;
3009         /*
3010          * Provision Discovery Response may have been lost - try to connect
3011          * anyway since we do not need any information from this PD.
3012          */
3013         wpa_printf(MSG_DEBUG, "P2P: PD timeout for join-existing-group - "
3014                    "try to connect anyway");
3015         wpas_p2p_join_start(wpa_s);
3016 }
3017
3018
3019 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
3020 {
3021         struct wpa_supplicant *iface;
3022         int shared_freq;
3023         u8 bssid[ETH_ALEN];
3024
3025         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)
3026                 return 0;
3027
3028         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
3029                 if (!wpas_p2p_create_iface(wpa_s) && iface == wpa_s)
3030                         continue;
3031                 if (iface->current_ssid == NULL || iface->assoc_freq == 0)
3032                         continue;
3033                 if (iface->current_ssid->mode == WPAS_MODE_AP ||
3034                     iface->current_ssid->mode == WPAS_MODE_P2P_GO)
3035                         shared_freq = iface->current_ssid->frequency;
3036                 else if (wpa_drv_get_bssid(iface, bssid) == 0)
3037                         shared_freq = iface->assoc_freq;
3038                 else
3039                         shared_freq = 0;
3040
3041                 if (shared_freq && freq != shared_freq) {
3042                         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - %s "
3043                                    "connected on %d MHz - new connection on "
3044                                    "%d MHz", iface->ifname, shared_freq, freq);
3045                         return 1;
3046                 }
3047         }
3048
3049         shared_freq = wpa_drv_shared_freq(wpa_s);
3050         if (shared_freq > 0 && shared_freq != freq) {
3051                 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - shared "
3052                            "virtual interface connected on %d MHz - new "
3053                            "connection on %d MHz", shared_freq, freq);
3054                 return 1;
3055         }
3056
3057         return 0;
3058 }
3059
3060
3061 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
3062                             const u8 *peer_dev_addr)
3063 {
3064         struct wpa_bss *bss;
3065         int updated;
3066
3067         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
3068         if (bss == NULL)
3069                 return -1;
3070         if (bss->last_update_idx < wpa_s->bss_update_idx) {
3071                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
3072                            "last scan");
3073                 return 0;
3074         }
3075
3076         updated = os_time_before(&wpa_s->p2p_auto_started, &bss->last_update);
3077         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
3078                    "%ld.%06ld (%supdated in last scan)",
3079                    bss->last_update.sec, bss->last_update.usec,
3080                    updated ? "": "not ");
3081
3082         return updated;
3083 }
3084
3085
3086 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
3087                                    struct wpa_scan_results *scan_res)
3088 {
3089         struct wpa_bss *bss;
3090         int freq;
3091         u8 iface_addr[ETH_ALEN];
3092
3093         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3094
3095         if (wpa_s->global->p2p_disabled)
3096                 return;
3097
3098         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
3099                    scan_res ? (int) scan_res->num : -1,
3100                    wpa_s->p2p_auto_join ? "auto_" : "");
3101
3102         if (scan_res)
3103                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
3104
3105         if (wpa_s->p2p_auto_pd) {
3106                 int join = wpas_p2p_peer_go(wpa_s,
3107                                             wpa_s->pending_join_dev_addr);
3108                 if (join == 0 &&
3109                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
3110                         wpa_s->auto_pd_scan_retry++;
3111                         bss = wpa_bss_get_bssid(wpa_s,
3112                                                 wpa_s->pending_join_dev_addr);
3113                         if (bss) {
3114                                 freq = bss->freq;
3115                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
3116                                            "the peer " MACSTR " at %d MHz",
3117                                            wpa_s->auto_pd_scan_retry,
3118                                            MAC2STR(wpa_s->
3119                                                    pending_join_dev_addr),
3120                                            freq);
3121                                 wpas_p2p_join_scan_req(wpa_s, freq);
3122                                 return;
3123                         }
3124                 }
3125
3126                 if (join < 0)
3127                         join = 0;
3128
3129                 wpa_s->p2p_auto_pd = 0;
3130                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
3131                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
3132                            MAC2STR(wpa_s->pending_join_dev_addr), join);
3133                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3134                                       wpa_s->pending_join_dev_addr,
3135                                       wpa_s->pending_pd_config_methods, join,
3136                                       0) < 0) {
3137                         wpa_s->p2p_auto_pd = 0;
3138                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3139                                 " p2p_dev_addr=" MACSTR " status=N/A",
3140                                 MAC2STR(wpa_s->pending_join_dev_addr));
3141                 }
3142                 return;
3143         }
3144
3145         if (wpa_s->p2p_auto_join) {
3146                 int join = wpas_p2p_peer_go(wpa_s,
3147                                             wpa_s->pending_join_dev_addr);
3148                 if (join < 0) {
3149                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
3150                                    "running a GO -> use GO Negotiation");
3151                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
3152                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
3153                                          wpa_s->p2p_persistent_group, 0, 0, 0,
3154                                          wpa_s->p2p_go_intent,
3155                                          wpa_s->p2p_connect_freq,
3156                                          wpa_s->p2p_persistent_id,
3157                                          wpa_s->p2p_pd_before_go_neg,
3158                                          wpa_s->p2p_go_ht40);
3159                         return;
3160                 }
3161
3162                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
3163                            "try to join the group", join ? "" :
3164                            " in older scan");
3165                 if (!join)
3166                         wpa_s->p2p_fallback_to_go_neg = 1;
3167         }
3168
3169         freq = p2p_get_oper_freq(wpa_s->global->p2p,
3170                                  wpa_s->pending_join_iface_addr);
3171         if (freq < 0 &&
3172             p2p_get_interface_addr(wpa_s->global->p2p,
3173                                    wpa_s->pending_join_dev_addr,
3174                                    iface_addr) == 0 &&
3175             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
3176         {
3177                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
3178                            "address for join from " MACSTR " to " MACSTR
3179                            " based on newly discovered P2P peer entry",
3180                            MAC2STR(wpa_s->pending_join_iface_addr),
3181                            MAC2STR(iface_addr));
3182                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
3183                           ETH_ALEN);
3184
3185                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
3186                                          wpa_s->pending_join_iface_addr);
3187         }
3188         if (freq >= 0) {
3189                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3190                            "from P2P peer table: %d MHz", freq);
3191         }
3192         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3193         if (bss) {
3194                 freq = bss->freq;
3195                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3196                            "from BSS table: %d MHz", freq);
3197         }
3198         if (freq > 0) {
3199                 u16 method;
3200
3201                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
3202                         wpa_msg(wpa_s->parent, MSG_INFO,
3203                                 P2P_EVENT_GROUP_FORMATION_FAILURE
3204                                 "reason=FREQ_CONFLICT");
3205                         return;
3206                 }
3207
3208                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
3209                            "prior to joining an existing group (GO " MACSTR
3210                            " freq=%u MHz)",
3211                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
3212                 wpa_s->pending_pd_before_join = 1;
3213
3214                 switch (wpa_s->pending_join_wps_method) {
3215                 case WPS_PIN_DISPLAY:
3216                         method = WPS_CONFIG_KEYPAD;
3217                         break;
3218                 case WPS_PIN_KEYPAD:
3219                         method = WPS_CONFIG_DISPLAY;
3220                         break;
3221                 case WPS_PBC:
3222                         method = WPS_CONFIG_PUSHBUTTON;
3223                         break;
3224                 default:
3225                         method = 0;
3226                         break;
3227                 }
3228
3229                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
3230                                                wpa_s->pending_join_dev_addr) ==
3231                      method)) {
3232                         /*
3233                          * We have already performed provision discovery for
3234                          * joining the group. Proceed directly to join
3235                          * operation without duplicated provision discovery. */
3236                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
3237                                    "with " MACSTR " already done - proceed to "
3238                                    "join",
3239                                    MAC2STR(wpa_s->pending_join_dev_addr));
3240                         wpa_s->pending_pd_before_join = 0;
3241                         goto start;
3242                 }
3243
3244                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3245                                       wpa_s->pending_join_dev_addr, method, 1,
3246                                       freq) < 0) {
3247                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
3248                                    "Discovery Request before joining an "
3249                                    "existing group");
3250                         wpa_s->pending_pd_before_join = 0;
3251                         goto start;
3252                 }
3253
3254                 /*
3255                  * Actual join operation will be started from the Action frame
3256                  * TX status callback (if no ACK is received) or when the
3257                  * Provision Discovery Response is received. Use a short
3258                  * timeout as a backup mechanism should the Provision Discovery
3259                  * Response be lost for any reason.
3260                  */
3261                 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s,
3262                                      NULL);
3263                 eloop_register_timeout(2, 0, wpas_p2p_pd_before_join_timeout,
3264                                        wpa_s, NULL);
3265                 return;
3266         }
3267
3268         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
3269         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3270         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3271         wpas_p2p_check_join_scan_limit(wpa_s);
3272         return;
3273
3274 start:
3275         /* Start join operation immediately */
3276         wpas_p2p_join_start(wpa_s);
3277 }
3278
3279
3280 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq)
3281 {
3282         int ret;
3283         struct wpa_driver_scan_params params;
3284         struct wpabuf *wps_ie, *ies;
3285         size_t ielen;
3286         int freqs[2] = { 0, 0 };
3287 #ifdef ANDROID_P2P
3288         int oper_freq;
3289
3290         /* If freq is not provided, check the operating freq of the GO and do a
3291          * a directed scan to save time
3292          */
3293         if(!freq) {
3294                 freq = (oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
3295                          wpa_s->pending_join_iface_addr) == -1) ? 0 : oper_freq;
3296         }
3297 #endif
3298         os_memset(&params, 0, sizeof(params));
3299
3300         /* P2P Wildcard SSID */
3301         params.num_ssids = 1;
3302         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
3303         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
3304
3305         wpa_s->wps->dev.p2p = 1;
3306         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
3307                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
3308                                         NULL);
3309         if (wps_ie == NULL) {
3310                 wpas_p2p_scan_res_join(wpa_s, NULL);
3311                 return;
3312         }
3313
3314         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
3315         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
3316         if (ies == NULL) {
3317                 wpabuf_free(wps_ie);
3318                 wpas_p2p_scan_res_join(wpa_s, NULL);
3319                 return;
3320         }
3321         wpabuf_put_buf(ies, wps_ie);
3322         wpabuf_free(wps_ie);
3323
3324         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
3325
3326         params.p2p_probe = 1;
3327         params.extra_ies = wpabuf_head(ies);
3328         params.extra_ies_len = wpabuf_len(ies);
3329         if (freq > 0) {
3330                 freqs[0] = freq;
3331                 params.freqs = freqs;
3332         }
3333
3334         /*
3335          * Run a scan to update BSS table and start Provision Discovery once
3336          * the new scan results become available.
3337          */
3338         ret = wpa_drv_scan(wpa_s, &params);
3339         if (!ret)
3340                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
3341
3342         wpabuf_free(ies);
3343
3344         if (ret) {
3345                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
3346                            "try again later");
3347                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3348                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3349                 wpas_p2p_check_join_scan_limit(wpa_s);
3350         }
3351 }
3352
3353
3354 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
3355 {
3356         struct wpa_supplicant *wpa_s = eloop_ctx;
3357         wpas_p2p_join_scan_req(wpa_s, 0);
3358 }
3359
3360
3361 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
3362                          const u8 *dev_addr, enum p2p_wps_method wps_method,
3363                          int auto_join)
3364 {
3365         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
3366                    MACSTR " dev " MACSTR ")%s",
3367                    MAC2STR(iface_addr), MAC2STR(dev_addr),
3368                    auto_join ? " (auto_join)" : "");
3369
3370         wpa_s->p2p_auto_pd = 0;
3371         wpa_s->p2p_auto_join = !!auto_join;
3372         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
3373         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
3374         wpa_s->pending_join_wps_method = wps_method;
3375
3376         /* Make sure we are not running find during connection establishment */
3377         wpas_p2p_stop_find(wpa_s);
3378
3379         wpa_s->p2p_join_scan_count = 0;
3380         wpas_p2p_join_scan(wpa_s, NULL);
3381         return 0;
3382 }
3383
3384
3385 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
3386 {
3387         struct wpa_supplicant *group;
3388         struct p2p_go_neg_results res;
3389         struct wpa_bss *bss;
3390
3391         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
3392         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
3393         if (group == NULL)
3394                 return -1;
3395         if (group != wpa_s) {
3396                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
3397                           sizeof(group->p2p_pin));
3398                 group->p2p_wps_method = wpa_s->p2p_wps_method;
3399         }
3400
3401         group->p2p_in_provisioning = 1;
3402         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
3403
3404         os_memset(&res, 0, sizeof(res));
3405         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
3406                   ETH_ALEN);
3407         res.wps_method = wpa_s->pending_join_wps_method;
3408         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3409         if (bss) {
3410                 res.freq = bss->freq;
3411                 res.ssid_len = bss->ssid_len;
3412                 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
3413         }
3414
3415         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
3416                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
3417                            "starting client");
3418                 wpa_drv_cancel_remain_on_channel(wpa_s);
3419                 wpa_s->off_channel_freq = 0;
3420                 wpa_s->roc_waiting_drv_freq = 0;
3421         }
3422         wpas_start_wps_enrollee(group, &res);
3423
3424         /*
3425          * Allow a longer timeout for join-a-running-group than normal 15
3426          * second group formation timeout since the GO may not have authorized
3427          * our connection yet.
3428          */
3429         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3430         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
3431                                wpa_s, NULL);
3432
3433         return 0;
3434 }
3435
3436
3437 /**
3438  * wpas_p2p_connect - Request P2P Group Formation to be started
3439  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3440  * @peer_addr: Address of the peer P2P Device
3441  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
3442  * @persistent_group: Whether to create a persistent group
3443  * @auto_join: Whether to select join vs. GO Negotiation automatically
3444  * @join: Whether to join an existing group (as a client) instead of starting
3445  *      Group Owner negotiation; @peer_addr is BSSID in that case
3446  * @auth: Whether to only authorize the connection instead of doing that and
3447  *      initiating Group Owner negotiation
3448  * @go_intent: GO Intent or -1 to use default
3449  * @freq: Frequency for the group or 0 for auto-selection
3450  * @persistent_id: Persistent group credentials to use for forcing GO
3451  *      parameters or -1 to generate new values (SSID/passphrase)
3452  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
3453  *      interoperability workaround when initiating group formation
3454  * @ht40: Start GO with 40 MHz channel width
3455  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
3456  *      failure, -2 on failure due to channel not currently available,
3457  *      -3 if forced channel is not supported
3458  */
3459 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3460                      const char *pin, enum p2p_wps_method wps_method,
3461                      int persistent_group, int auto_join, int join, int auth,
3462                      int go_intent, int freq, int persistent_id, int pd,
3463                      int ht40)
3464 {
3465         int force_freq = 0, oper_freq = 0;
3466         u8 bssid[ETH_ALEN];
3467         int ret = 0;
3468         enum wpa_driver_if_type iftype;
3469         const u8 *if_addr;
3470         struct wpa_ssid *ssid = NULL;
3471
3472         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3473                 return -1;
3474
3475         if (persistent_id >= 0) {
3476                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
3477                 if (ssid == NULL || ssid->disabled != 2 ||
3478                     ssid->mode != WPAS_MODE_P2P_GO)
3479                         return -1;
3480         }
3481
3482         if (go_intent < 0)
3483                 go_intent = wpa_s->conf->p2p_go_intent;
3484
3485         if (!auth)
3486                 wpa_s->p2p_long_listen = 0;
3487
3488         wpa_s->p2p_wps_method = wps_method;
3489         wpa_s->p2p_persistent_group = !!persistent_group;
3490         wpa_s->p2p_persistent_id = persistent_id;
3491         wpa_s->p2p_go_intent = go_intent;
3492         wpa_s->p2p_connect_freq = freq;
3493         wpa_s->p2p_fallback_to_go_neg = 0;
3494         wpa_s->p2p_pd_before_go_neg = !!pd;
3495         wpa_s->p2p_go_ht40 = !!ht40;
3496
3497         if (pin)
3498                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
3499         else if (wps_method == WPS_PIN_DISPLAY) {
3500                 ret = wps_generate_pin();
3501                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
3502                             ret);
3503                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
3504                            wpa_s->p2p_pin);
3505         } else
3506                 wpa_s->p2p_pin[0] = '\0';
3507
3508         if (join || auto_join) {
3509                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
3510                 if (auth) {
3511                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
3512                                    "connect a running group from " MACSTR,
3513                                    MAC2STR(peer_addr));
3514                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
3515                         return ret;
3516                 }
3517                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
3518                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
3519                                            iface_addr) < 0) {
3520                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
3521                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
3522                                          dev_addr);
3523                 }
3524                 if (auto_join) {
3525                         os_get_time(&wpa_s->p2p_auto_started);
3526                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
3527                                    "%ld.%06ld",
3528                                    wpa_s->p2p_auto_started.sec,
3529                                    wpa_s->p2p_auto_started.usec);
3530                 }
3531                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
3532                                   auto_join) < 0)
3533                         return -1;
3534                 return ret;
3535         }
3536
3537         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3538             wpa_s->assoc_freq)
3539                 oper_freq = wpa_s->assoc_freq;
3540         else {
3541                 oper_freq = wpa_drv_shared_freq(wpa_s);
3542                 if (oper_freq < 0)
3543                         oper_freq = 0;
3544         }
3545
3546         if (freq > 0) {
3547                 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3548                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
3549                                    "(%u MHz) is not supported for P2P uses",
3550                                    freq);
3551                         return -3;
3552                 }
3553
3554                 if (oper_freq > 0 && freq != oper_freq &&
3555                     !(wpa_s->drv_flags &
3556                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3557                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3558                                    "on %u MHz while connected on another "
3559                                    "channel (%u MHz)", freq, oper_freq);
3560                         return -2;
3561                 }
3562                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3563                            "requested channel (%u MHz)", freq);
3564                 force_freq = freq;
3565         } else if (oper_freq > 0 &&
3566                    !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) {
3567                 if (!(wpa_s->drv_flags &
3568                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3569                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3570                                    "while connected on non-P2P supported "
3571                                    "channel (%u MHz)", oper_freq);
3572                         return -2;
3573                 }
3574                 wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
3575                            "(%u MHz) not available for P2P - try to use "
3576                            "another channel", oper_freq);
3577                 force_freq = 0;
3578         } else if (oper_freq > 0) {
3579                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3580                            "channel we are already using (%u MHz) on another "
3581                            "interface", oper_freq);
3582                 force_freq = oper_freq;
3583         }
3584
3585         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
3586
3587         if (wpa_s->create_p2p_iface) {
3588                 /* Prepare to add a new interface for the group */
3589                 iftype = WPA_IF_P2P_GROUP;
3590                 if (go_intent == 15)
3591                         iftype = WPA_IF_P2P_GO;
3592                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
3593                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3594                                    "interface for the group");
3595                         return -1;
3596                 }
3597
3598                 if_addr = wpa_s->pending_interface_addr;
3599         } else
3600                 if_addr = wpa_s->own_addr;
3601
3602         if (auth) {
3603                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
3604                                          go_intent, if_addr,
3605                                          force_freq, persistent_group, ssid) <
3606                     0)
3607                         return -1;
3608                 return ret;
3609         }
3610
3611         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
3612                                   go_intent, if_addr, force_freq,
3613                                   persistent_group, ssid) < 0) {
3614                 if (wpa_s->create_p2p_iface)
3615                         wpas_p2p_remove_pending_group_interface(wpa_s);
3616                 return -1;
3617         }
3618         return ret;
3619 }
3620
3621
3622 /**
3623  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
3624  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3625  * @freq: Frequency of the channel in MHz
3626  * @duration: Duration of the stay on the channel in milliseconds
3627  *
3628  * This callback is called when the driver indicates that it has started the
3629  * requested remain-on-channel duration.
3630  */
3631 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3632                                    unsigned int freq, unsigned int duration)
3633 {
3634         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3635                 return;
3636         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
3637                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
3638                               wpa_s->pending_listen_duration);
3639                 wpa_s->pending_listen_freq = 0;
3640         }
3641 }
3642
3643
3644 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
3645                                  unsigned int timeout)
3646 {
3647         /* Limit maximum Listen state time based on driver limitation. */
3648         if (timeout > wpa_s->max_remain_on_chan)
3649                 timeout = wpa_s->max_remain_on_chan;
3650
3651         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3652                 return wpa_drv_p2p_listen(wpa_s, timeout);
3653
3654         return p2p_listen(wpa_s->global->p2p, timeout);
3655 }
3656
3657
3658 /**
3659  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
3660  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3661  * @freq: Frequency of the channel in MHz
3662  *
3663  * This callback is called when the driver indicates that a remain-on-channel
3664  * operation has been completed, i.e., the duration on the requested channel
3665  * has timed out.
3666  */
3667 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3668                                           unsigned int freq)
3669 {
3670         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
3671                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
3672                    wpa_s->p2p_long_listen, wpa_s->pending_action_tx);
3673         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3674                 return;
3675         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
3676                 return; /* P2P module started a new operation */
3677         if (wpa_s->pending_action_tx)
3678                 return;
3679         if (wpa_s->p2p_long_listen > 0)
3680                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
3681         if (wpa_s->p2p_long_listen > 0) {
3682                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
3683                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
3684         }
3685 }
3686
3687
3688 /**
3689  * wpas_p2p_group_remove - Remove a P2P group
3690  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3691  * @ifname: Network interface name of the group interface or "*" to remove all
3692  *      groups
3693  * Returns: 0 on success, -1 on failure
3694  *
3695  * This function is used to remove a P2P group. This can be used to disconnect
3696  * from a group in which the local end is a P2P Client or to end a P2P Group in
3697  * case the local end is the Group Owner. If a virtual network interface was
3698  * created for this group, that interface will be removed. Otherwise, only the
3699  * configured P2P group network will be removed from the interface.
3700  */
3701 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
3702 {
3703         struct wpa_global *global = wpa_s->global;
3704
3705         if (os_strcmp(ifname, "*") == 0) {
3706                 struct wpa_supplicant *prev;
3707                 wpa_s = global->ifaces;
3708                 while (wpa_s) {
3709                         prev = wpa_s;
3710                         wpa_s = wpa_s->next;
3711                         wpas_p2p_disconnect(prev);
3712                 }
3713                 return 0;
3714         }
3715
3716         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3717                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
3718                         break;
3719         }
3720
3721         return wpas_p2p_disconnect(wpa_s);
3722 }
3723
3724
3725 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
3726                                    struct p2p_go_neg_results *params,
3727                                    int freq, int ht40)
3728 {
3729         u8 bssid[ETH_ALEN];
3730         int res;
3731
3732         os_memset(params, 0, sizeof(*params));
3733         params->role_go = 1;
3734         params->ht40 = ht40;
3735         if (freq) {
3736                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
3737                            "frequency %d MHz", freq);
3738                 params->freq = freq;
3739         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
3740                    wpa_s->conf->p2p_oper_channel >= 1 &&
3741                    wpa_s->conf->p2p_oper_channel <= 11) {
3742                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
3743                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3744                            "frequency %d MHz", params->freq);
3745         } else if (wpa_s->conf->p2p_oper_reg_class == 115 ||
3746                    wpa_s->conf->p2p_oper_reg_class == 124) {
3747                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
3748                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3749                            "frequency %d MHz", params->freq);
3750         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3751                    wpa_s->best_overall_freq > 0 &&
3752                    p2p_supported_freq(wpa_s->global->p2p,
3753                                       wpa_s->best_overall_freq)) {
3754                 params->freq = wpa_s->best_overall_freq;
3755                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
3756                            "channel %d MHz", params->freq);
3757         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3758                    wpa_s->best_24_freq > 0 &&
3759                    p2p_supported_freq(wpa_s->global->p2p,
3760                                       wpa_s->best_24_freq)) {
3761                 params->freq = wpa_s->best_24_freq;
3762                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
3763                            "channel %d MHz", params->freq);
3764         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3765                    wpa_s->best_5_freq > 0 &&
3766                    p2p_supported_freq(wpa_s->global->p2p,
3767                                       wpa_s->best_5_freq)) {
3768                 params->freq = wpa_s->best_5_freq;
3769                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
3770                            "channel %d MHz", params->freq);
3771         } else {
3772                 int chan;
3773                 for (chan = 0; chan < 11; chan++) {
3774                         params->freq = 2412 + chan * 5;
3775                         if (!wpas_p2p_disallowed_freq(wpa_s->global,
3776                                                       params->freq))
3777                                 break;
3778                 }
3779                 if (chan == 11) {
3780                         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
3781                                    "allowed");
3782                         return -1;
3783                 }
3784                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
3785                            "known)", params->freq);
3786         }
3787
3788         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3789             wpa_s->assoc_freq && !freq) {
3790                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3791                            "already using");
3792                 params->freq = wpa_s->assoc_freq;
3793         }
3794
3795         res = wpa_drv_shared_freq(wpa_s);
3796         if (res > 0 && !freq) {
3797                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3798                            "already using on a shared interface");
3799                 params->freq = res;
3800         } else if (res > 0 && freq != res &&
3801                    !(wpa_s->drv_flags &
3802                      WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3803                 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz "
3804                            "while connected on another channel (%u MHz)",
3805                            freq, res);
3806                 return -1;
3807         }
3808
3809         return 0;
3810 }
3811
3812
3813 static struct wpa_supplicant *
3814 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
3815                          int go)
3816 {
3817         struct wpa_supplicant *group_wpa_s;
3818
3819         if (!wpas_p2p_create_iface(wpa_s))
3820                 return wpa_s;
3821
3822         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
3823                                          WPA_IF_P2P_CLIENT) < 0)
3824                 return NULL;
3825         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
3826         if (group_wpa_s == NULL) {
3827                 wpas_p2p_remove_pending_group_interface(wpa_s);
3828                 return NULL;
3829         }
3830
3831         return group_wpa_s;
3832 }
3833
3834
3835 /**
3836  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
3837  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3838  * @persistent_group: Whether to create a persistent group
3839  * @freq: Frequency for the group or 0 to indicate no hardcoding
3840  * Returns: 0 on success, -1 on failure
3841  *
3842  * This function creates a new P2P group with the local end as the Group Owner,
3843  * i.e., without using Group Owner Negotiation.
3844  */
3845 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
3846                        int freq, int ht40)
3847 {
3848         struct p2p_go_neg_results params;
3849         unsigned int r;
3850
3851         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3852                 return -1;
3853
3854         /* Make sure we are not running find during connection establishment */
3855         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
3856         wpas_p2p_stop_find(wpa_s);
3857
3858         if (freq == 2) {
3859                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
3860                            "band");
3861                 if (wpa_s->best_24_freq > 0 &&
3862                     p2p_supported_freq(wpa_s->global->p2p,
3863                                        wpa_s->best_24_freq)) {
3864                         freq = wpa_s->best_24_freq;
3865                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
3866                                    "channel: %d MHz", freq);
3867                 } else {
3868                         os_get_random((u8 *) &r, sizeof(r));
3869                         freq = 2412 + (r % 3) * 25;
3870                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
3871                                    "channel: %d MHz", freq);
3872                 }
3873         }
3874
3875         if (freq == 5) {
3876                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
3877                            "band");
3878                 if (wpa_s->best_5_freq > 0 &&
3879                     p2p_supported_freq(wpa_s->global->p2p,
3880                                        wpa_s->best_5_freq)) {
3881                         freq = wpa_s->best_5_freq;
3882                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
3883                                    "channel: %d MHz", freq);
3884                 } else {
3885                         os_get_random((u8 *) &r, sizeof(r));
3886                         freq = 5180 + (r % 4) * 20;
3887                         if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3888                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
3889                                            "5 GHz channel for P2P group");
3890                                 return -1;
3891                         }
3892                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
3893                                    "channel: %d MHz", freq);
3894                 }
3895         }
3896
3897         if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) {
3898                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
3899                            "(%u MHz) is not supported for P2P uses",
3900                            freq);
3901                 return -1;
3902         }
3903
3904         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
3905                 return -1;
3906         if (params.freq &&
3907             !p2p_supported_freq(wpa_s->global->p2p, params.freq)) {
3908                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
3909                            "(%u MHz) is not supported for P2P uses",
3910                            params.freq);
3911                 return -1;
3912         }
3913         p2p_go_params(wpa_s->global->p2p, &params);
3914         params.persistent_group = persistent_group;
3915
3916         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
3917         if (wpa_s == NULL)
3918                 return -1;
3919         wpas_start_wps_go(wpa_s, &params, 0);
3920
3921         return 0;
3922 }
3923
3924
3925 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
3926                                  struct wpa_ssid *params, int addr_allocated)
3927 {
3928         struct wpa_ssid *ssid;
3929
3930         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
3931         if (wpa_s == NULL)
3932                 return -1;
3933
3934         wpa_supplicant_ap_deinit(wpa_s);
3935
3936         ssid = wpa_config_add_network(wpa_s->conf);
3937         if (ssid == NULL)
3938                 return -1;
3939         wpa_config_set_network_defaults(ssid);
3940         ssid->temporary = 1;
3941         ssid->proto = WPA_PROTO_RSN;
3942         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
3943         ssid->group_cipher = WPA_CIPHER_CCMP;
3944         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
3945         ssid->ssid = os_malloc(params->ssid_len);
3946         if (ssid->ssid == NULL) {
3947                 wpa_config_remove_network(wpa_s->conf, ssid->id);
3948                 return -1;
3949         }
3950         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
3951         ssid->ssid_len = params->ssid_len;
3952         ssid->p2p_group = 1;
3953         ssid->export_keys = 1;
3954         if (params->psk_set) {
3955                 os_memcpy(ssid->psk, params->psk, 32);
3956                 ssid->psk_set = 1;
3957         }
3958         if (params->passphrase)
3959                 ssid->passphrase = os_strdup(params->passphrase);
3960
3961         wpa_supplicant_select_network(wpa_s, ssid);
3962
3963         wpa_s->show_group_started = 1;
3964
3965         return 0;
3966 }
3967
3968
3969 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
3970                                   struct wpa_ssid *ssid, int addr_allocated,
3971                                   int freq, int ht40)
3972 {
3973         struct p2p_go_neg_results params;
3974         int go = 0;
3975
3976         if (ssid->disabled != 2 || ssid->ssid == NULL)
3977                 return -1;
3978
3979         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
3980             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
3981                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
3982                            "already running");
3983                 return 0;
3984         }
3985
3986         /* Make sure we are not running find during connection establishment */
3987         wpas_p2p_stop_find(wpa_s);
3988
3989         wpa_s->p2p_fallback_to_go_neg = 0;
3990
3991         if (ssid->mode == WPAS_MODE_INFRA)
3992                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
3993
3994         if (ssid->mode != WPAS_MODE_P2P_GO)
3995                 return -1;
3996
3997         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
3998                 return -1;
3999
4000         params.role_go = 1;
4001         if (ssid->passphrase == NULL ||
4002             os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
4003                 wpa_printf(MSG_DEBUG, "P2P: Invalid passphrase in persistent "
4004                            "group");
4005                 return -1;
4006         }
4007         os_strlcpy(params.passphrase, ssid->passphrase,
4008                    sizeof(params.passphrase));
4009         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
4010         params.ssid_len = ssid->ssid_len;
4011         params.persistent_group = 1;
4012
4013         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
4014         if (wpa_s == NULL)
4015                 return -1;
4016
4017         wpas_start_wps_go(wpa_s, &params, 0);
4018
4019         return 0;
4020 }
4021
4022
4023 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
4024                                struct wpabuf *proberesp_ies)
4025 {
4026         struct wpa_supplicant *wpa_s = ctx;
4027         if (wpa_s->ap_iface) {
4028                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
4029                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
4030                         wpabuf_free(beacon_ies);
4031                         wpabuf_free(proberesp_ies);
4032                         return;
4033                 }
4034                 if (beacon_ies) {
4035                         wpabuf_free(hapd->p2p_beacon_ie);
4036                         hapd->p2p_beacon_ie = beacon_ies;
4037                 }
4038                 wpabuf_free(hapd->p2p_probe_resp_ie);
4039                 hapd->p2p_probe_resp_ie = proberesp_ies;
4040         } else {
4041                 wpabuf_free(beacon_ies);
4042                 wpabuf_free(proberesp_ies);
4043         }
4044         wpa_supplicant_ap_update_beacon(wpa_s);
4045 }
4046
4047
4048 static void wpas_p2p_idle_update(void *ctx, int idle)
4049 {
4050         struct wpa_supplicant *wpa_s = ctx;
4051         if (!wpa_s->ap_iface)
4052                 return;
4053         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
4054         if (idle)
4055                 wpas_p2p_set_group_idle_timeout(wpa_s);
4056         else
4057                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4058 }
4059
4060
4061 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
4062                                        struct wpa_ssid *ssid)
4063 {
4064         struct p2p_group *group;
4065         struct p2p_group_config *cfg;
4066
4067         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4068                 return NULL;
4069         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4070                 return NULL;
4071
4072         cfg = os_zalloc(sizeof(*cfg));
4073         if (cfg == NULL)
4074                 return NULL;
4075
4076         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
4077                 cfg->persistent_group = 2;
4078         else if (ssid->p2p_persistent_group)
4079                 cfg->persistent_group = 1;
4080         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
4081         if (wpa_s->max_stations &&
4082             wpa_s->max_stations < wpa_s->conf->max_num_sta)
4083                 cfg->max_clients = wpa_s->max_stations;
4084         else
4085                 cfg->max_clients = wpa_s->conf->max_num_sta;
4086         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
4087         cfg->ssid_len = ssid->ssid_len;
4088         cfg->cb_ctx = wpa_s;
4089         cfg->ie_update = wpas_p2p_ie_update;
4090         cfg->idle_update = wpas_p2p_idle_update;
4091
4092         group = p2p_group_init(wpa_s->global->p2p, cfg);
4093         if (group == NULL)
4094                 os_free(cfg);
4095         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
4096                 p2p_group_notif_formation_done(group);
4097         wpa_s->p2p_group = group;
4098         return group;
4099 }
4100
4101
4102 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4103                           int registrar)
4104 {
4105         struct wpa_ssid *ssid = wpa_s->current_ssid;
4106
4107         if (!wpa_s->p2p_in_provisioning) {
4108                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
4109                            "provisioning not in progress");
4110                 return;
4111         }
4112
4113         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4114                 u8 go_dev_addr[ETH_ALEN];
4115                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
4116                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4117                                           ssid->ssid_len);
4118                 /* Clear any stored provisioning info */
4119                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
4120         }
4121
4122         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
4123                              NULL);
4124         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4125                 /*
4126                  * Use a separate timeout for initial data connection to
4127                  * complete to allow the group to be removed automatically if
4128                  * something goes wrong in this step before the P2P group idle
4129                  * timeout mechanism is taken into use.
4130                  */
4131                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
4132                                        wpas_p2p_group_formation_timeout,
4133                                        wpa_s->parent, NULL);
4134         }
4135         if (wpa_s->global->p2p)
4136                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
4137         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4138                 wpa_drv_wps_success_cb(wpa_s, peer_addr);
4139         wpas_group_formation_completed(wpa_s, 1);
4140 }
4141
4142
4143 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
4144                          struct wps_event_fail *fail)
4145 {
4146         if (!wpa_s->p2p_in_provisioning) {
4147                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
4148                            "provisioning not in progress");
4149                 return;
4150         }
4151
4152         if (wpa_s->go_params) {
4153                 p2p_clear_provisioning_info(
4154                         wpa_s->global->p2p,
4155                         wpa_s->go_params->peer_device_addr);
4156         }
4157
4158         wpas_notify_p2p_wps_failed(wpa_s, fail);
4159 }
4160
4161
4162 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4163                        const char *config_method,
4164                        enum wpas_p2p_prov_disc_use use)
4165 {
4166         u16 config_methods;
4167
4168         wpa_s->p2p_fallback_to_go_neg = 0;
4169         wpa_s->pending_pd_use = NORMAL_PD;
4170         if (os_strncmp(config_method, "display", 7) == 0)
4171                 config_methods = WPS_CONFIG_DISPLAY;
4172         else if (os_strncmp(config_method, "keypad", 6) == 0)
4173                 config_methods = WPS_CONFIG_KEYPAD;
4174         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
4175                  os_strncmp(config_method, "pushbutton", 10) == 0)
4176                 config_methods = WPS_CONFIG_PUSHBUTTON;
4177         else {
4178                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
4179                 return -1;
4180         }
4181
4182         if (use == WPAS_P2P_PD_AUTO) {
4183                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
4184                 wpa_s->pending_pd_config_methods = config_methods;
4185                 wpa_s->p2p_auto_pd = 1;
4186                 wpa_s->p2p_auto_join = 0;
4187                 wpa_s->pending_pd_before_join = 0;
4188                 wpa_s->auto_pd_scan_retry = 0;
4189                 wpas_p2p_stop_find(wpa_s);
4190                 wpa_s->p2p_join_scan_count = 0;
4191                 os_get_time(&wpa_s->p2p_auto_started);
4192                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
4193                            wpa_s->p2p_auto_started.sec,
4194                            wpa_s->p2p_auto_started.usec);
4195                 wpas_p2p_join_scan(wpa_s, NULL);
4196                 return 0;
4197         }
4198
4199         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4200                 return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr,
4201                                                  config_methods,
4202                                                  use == WPAS_P2P_PD_FOR_JOIN);
4203         }
4204
4205         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
4206                 return -1;
4207
4208         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
4209                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
4210                                  0);
4211 }
4212
4213
4214 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
4215                               char *end)
4216 {
4217         return p2p_scan_result_text(ies, ies_len, buf, end);
4218 }
4219
4220
4221 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
4222 {
4223         if (!wpa_s->pending_action_tx)
4224                 return;
4225
4226         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
4227                    "operation request");
4228         wpabuf_free(wpa_s->pending_action_tx);
4229         wpa_s->pending_action_tx = NULL;
4230 }
4231
4232
4233 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
4234                   enum p2p_discovery_type type,
4235                   unsigned int num_req_dev_types, const u8 *req_dev_types,
4236                   const u8 *dev_id, unsigned int search_delay)
4237 {
4238         wpas_p2p_clear_pending_action_tx(wpa_s);
4239         wpa_s->p2p_long_listen = 0;
4240
4241         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4242                 return wpa_drv_p2p_find(wpa_s, timeout, type);
4243
4244         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
4245             wpa_s->p2p_in_provisioning)
4246                 return -1;
4247
4248         wpa_supplicant_cancel_sched_scan(wpa_s);
4249
4250         return p2p_find(wpa_s->global->p2p, timeout, type,
4251                         num_req_dev_types, req_dev_types, dev_id,
4252                         search_delay);
4253 }
4254
4255
4256 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
4257 {
4258         wpas_p2p_clear_pending_action_tx(wpa_s);
4259         wpa_s->p2p_long_listen = 0;
4260         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4261         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4262         wpa_s->p2p_cb_on_scan_complete = 0;
4263
4264         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4265                 wpa_drv_p2p_stop_find(wpa_s);
4266                 return;
4267         }
4268
4269         if (wpa_s->global->p2p)
4270                 p2p_stop_find(wpa_s->global->p2p);
4271
4272         wpas_p2p_remove_pending_group_interface(wpa_s);
4273 }
4274
4275
4276 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4277 {
4278         struct wpa_supplicant *wpa_s = eloop_ctx;
4279         wpa_s->p2p_long_listen = 0;
4280 }
4281
4282
4283 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
4284 {
4285         int res;
4286
4287         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4288                 return -1;
4289
4290         wpa_supplicant_cancel_sched_scan(wpa_s);
4291         wpas_p2p_clear_pending_action_tx(wpa_s);
4292
4293         if (timeout == 0) {
4294                 /*
4295                  * This is a request for unlimited Listen state. However, at
4296                  * least for now, this is mapped to a Listen state for one
4297                  * hour.
4298                  */
4299                 timeout = 3600;
4300         }
4301         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4302         wpa_s->p2p_long_listen = 0;
4303
4304         /*
4305          * Stop previous find/listen operation to avoid trying to request a new
4306          * remain-on-channel operation while the driver is still running the
4307          * previous one.
4308          */
4309         if (wpa_s->global->p2p)
4310                 p2p_stop_find(wpa_s->global->p2p);
4311
4312         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
4313         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
4314                 wpa_s->p2p_long_listen = timeout * 1000;
4315                 eloop_register_timeout(timeout, 0,
4316                                        wpas_p2p_long_listen_timeout,
4317                                        wpa_s, NULL);
4318         }
4319
4320         return res;
4321 }
4322
4323
4324 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
4325                           u8 *buf, size_t len, int p2p_group)
4326 {
4327         struct wpabuf *p2p_ie;
4328         int ret;
4329
4330         if (wpa_s->global->p2p_disabled)
4331                 return -1;
4332         if (wpa_s->global->p2p == NULL)
4333                 return -1;
4334         if (bss == NULL)
4335                 return -1;
4336
4337         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
4338         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
4339                                p2p_group, p2p_ie);
4340         wpabuf_free(p2p_ie);
4341
4342         return ret;
4343 }
4344
4345
4346 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
4347                           const u8 *dst, const u8 *bssid,
4348                           const u8 *ie, size_t ie_len, int ssi_signal)
4349 {
4350         if (wpa_s->global->p2p_disabled)
4351                 return 0;
4352         if (wpa_s->global->p2p == NULL)
4353                 return 0;
4354
4355         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
4356                                  ie, ie_len)) {
4357         case P2P_PREQ_NOT_P2P:
4358                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
4359                                  ssi_signal);
4360                 /* fall through */
4361         case P2P_PREQ_MALFORMED:
4362         case P2P_PREQ_NOT_LISTEN:
4363         case P2P_PREQ_NOT_PROCESSED:
4364         default: /* make gcc happy */
4365                 return 0;
4366         case P2P_PREQ_PROCESSED:
4367                 return 1;
4368         }
4369 }
4370
4371
4372 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
4373                         const u8 *sa, const u8 *bssid,
4374                         u8 category, const u8 *data, size_t len, int freq)
4375 {
4376         if (wpa_s->global->p2p_disabled)
4377                 return;
4378         if (wpa_s->global->p2p == NULL)
4379                 return;
4380
4381         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
4382                       freq);
4383 }
4384
4385
4386 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
4387 {
4388         if (wpa_s->global->p2p_disabled)
4389                 return;
4390         if (wpa_s->global->p2p == NULL)
4391                 return;
4392
4393         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4394 }
4395
4396
4397 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
4398 {
4399         p2p_group_deinit(wpa_s->p2p_group);
4400         wpa_s->p2p_group = NULL;
4401
4402         wpa_s->ap_configured_cb = NULL;
4403         wpa_s->ap_configured_cb_ctx = NULL;
4404         wpa_s->ap_configured_cb_data = NULL;
4405         wpa_s->connect_without_scan = NULL;
4406 }
4407
4408
4409 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
4410 {
4411         wpa_s->p2p_long_listen = 0;
4412
4413         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4414                 return wpa_drv_p2p_reject(wpa_s, addr);
4415
4416         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4417                 return -1;
4418
4419         return p2p_reject(wpa_s->global->p2p, addr);
4420 }
4421
4422
4423 /* Invite to reinvoke a persistent group */
4424 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4425                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
4426                     int ht40)
4427 {
4428         enum p2p_invite_role role;
4429         u8 *bssid = NULL;
4430
4431         wpa_s->p2p_persistent_go_freq = freq;
4432         wpa_s->p2p_go_ht40 = !!ht40;
4433         if (ssid->mode == WPAS_MODE_P2P_GO) {
4434                 role = P2P_INVITE_ROLE_GO;
4435                 if (peer_addr == NULL) {
4436                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
4437                                    "address in invitation command");
4438                         return -1;
4439                 }
4440                 if (wpas_p2p_create_iface(wpa_s)) {
4441                         if (wpas_p2p_add_group_interface(wpa_s,
4442                                                          WPA_IF_P2P_GO) < 0) {
4443                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
4444                                            "allocate a new interface for the "
4445                                            "group");
4446                                 return -1;
4447                         }
4448                         bssid = wpa_s->pending_interface_addr;
4449                 } else
4450                         bssid = wpa_s->own_addr;
4451         } else {
4452                 role = P2P_INVITE_ROLE_CLIENT;
4453                 peer_addr = ssid->bssid;
4454         }
4455         wpa_s->pending_invite_ssid_id = ssid->id;
4456
4457         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4458                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4459                                           ssid->ssid, ssid->ssid_len,
4460                                           go_dev_addr, 1);
4461
4462         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4463                 return -1;
4464
4465         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4466                           ssid->ssid, ssid->ssid_len, freq, go_dev_addr, 1);
4467 }
4468
4469
4470 /* Invite to join an active group */
4471 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
4472                           const u8 *peer_addr, const u8 *go_dev_addr)
4473 {
4474         struct wpa_global *global = wpa_s->global;
4475         enum p2p_invite_role role;
4476         u8 *bssid = NULL;
4477         struct wpa_ssid *ssid;
4478         int persistent;
4479
4480         wpa_s->p2p_persistent_go_freq = 0;
4481         wpa_s->p2p_go_ht40 = 0;
4482
4483         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4484                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4485                         break;
4486         }
4487         if (wpa_s == NULL) {
4488                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
4489                 return -1;
4490         }
4491
4492         ssid = wpa_s->current_ssid;
4493         if (ssid == NULL) {
4494                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
4495                            "invitation");
4496                 return -1;
4497         }
4498
4499         persistent = ssid->p2p_persistent_group &&
4500                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
4501                                         ssid->ssid, ssid->ssid_len);
4502
4503         if (ssid->mode == WPAS_MODE_P2P_GO) {
4504                 role = P2P_INVITE_ROLE_ACTIVE_GO;
4505                 bssid = wpa_s->own_addr;
4506                 if (go_dev_addr == NULL)
4507                         go_dev_addr = wpa_s->global->p2p_dev_addr;
4508         } else {
4509                 role = P2P_INVITE_ROLE_CLIENT;
4510                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
4511                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
4512                                    "invite to current group");
4513                         return -1;
4514                 }
4515                 bssid = wpa_s->bssid;
4516                 if (go_dev_addr == NULL &&
4517                     !is_zero_ether_addr(wpa_s->go_dev_addr))
4518                         go_dev_addr = wpa_s->go_dev_addr;
4519         }
4520         wpa_s->parent->pending_invite_ssid_id = -1;
4521
4522         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4523                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4524                                           ssid->ssid, ssid->ssid_len,
4525                                           go_dev_addr, persistent);
4526
4527         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4528                 return -1;
4529
4530         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4531                           ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq,
4532                           go_dev_addr, persistent);
4533 }
4534
4535
4536 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
4537 {
4538         struct wpa_ssid *ssid = wpa_s->current_ssid;
4539         const char *ssid_txt;
4540         u8 go_dev_addr[ETH_ALEN];
4541         int network_id = -1;
4542         int persistent;
4543         int freq;
4544
4545         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
4546                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
4547                                      wpa_s->parent, NULL);
4548         }
4549
4550         if (!wpa_s->show_group_started || !ssid)
4551                 goto done;
4552
4553         wpa_s->show_group_started = 0;
4554
4555         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
4556         os_memset(go_dev_addr, 0, ETH_ALEN);
4557         if (ssid->bssid_set)
4558                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
4559         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4560                                                ssid->ssid_len);
4561         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
4562
4563         if (wpa_s->global->p2p_group_formation == wpa_s)
4564                 wpa_s->global->p2p_group_formation = NULL;
4565
4566         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
4567                 (int) wpa_s->assoc_freq;
4568         if (ssid->passphrase == NULL && ssid->psk_set) {
4569                 char psk[65];
4570                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
4571                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4572                         "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr="
4573                         MACSTR "%s",
4574                         wpa_s->ifname, ssid_txt, freq, psk,
4575                         MAC2STR(go_dev_addr),
4576                         persistent ? " [PERSISTENT]" : "");
4577         } else {
4578                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4579                         "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" "
4580                         "go_dev_addr=" MACSTR "%s",
4581                         wpa_s->ifname, ssid_txt, freq,
4582                         ssid->passphrase ? ssid->passphrase : "",
4583                         MAC2STR(go_dev_addr),
4584                         persistent ? " [PERSISTENT]" : "");
4585         }
4586
4587         if (persistent)
4588                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
4589                                                              ssid, go_dev_addr);
4590         if (network_id < 0)
4591                 network_id = ssid->id;
4592         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
4593
4594 done:
4595         if (wpa_s->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
4596             wpa_s->global->p2p != NULL) {
4597                 wpa_s->p2p_cb_on_scan_complete = 0;
4598                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
4599                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
4600                                 "continued after successful connection");
4601                         p2p_increase_search_delay(
4602                                 wpa_s->global->p2p,
4603                                 wpas_p2p_search_delay(wpa_s));
4604                 }
4605         }
4606 }
4607
4608
4609 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
4610                           u32 interval1, u32 duration2, u32 interval2)
4611 {
4612         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4613                 return -1;
4614         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4615                 return -1;
4616
4617         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
4618             wpa_s->current_ssid == NULL ||
4619             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
4620                 return -1;
4621
4622         return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
4623                                 wpa_s->own_addr, wpa_s->assoc_freq,
4624                                 duration1, interval1, duration2, interval2);
4625 }
4626
4627
4628 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
4629                         unsigned int interval)
4630 {
4631         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4632                 return -1;
4633
4634         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4635                 return -1;
4636
4637         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
4638 }
4639
4640
4641 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
4642 {
4643         return wpa_s->current_ssid != NULL &&
4644                 wpa_s->current_ssid->p2p_group &&
4645                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
4646 }
4647
4648
4649 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
4650 {
4651         struct wpa_supplicant *wpa_s = eloop_ctx;
4652
4653         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
4654                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
4655                            "disabled");
4656                 return;
4657         }
4658
4659         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
4660                    "group");
4661         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
4662 }
4663
4664
4665 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
4666 {
4667         int timeout;
4668
4669         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
4670                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
4671
4672         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
4673                 return;
4674
4675         timeout = wpa_s->conf->p2p_group_idle;
4676         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
4677             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
4678             timeout = P2P_MAX_CLIENT_IDLE;
4679
4680         if (timeout == 0)
4681                 return;
4682
4683         if (timeout < 0) {
4684                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
4685                         timeout = 0; /* special client mode no-timeout */
4686                 else
4687                         return;
4688         }
4689
4690         if (wpa_s->p2p_in_provisioning) {
4691                 /*
4692                  * Use the normal group formation timeout during the
4693                  * provisioning phase to avoid terminating this process too
4694                  * early due to group idle timeout.
4695                  */
4696                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4697                            "during provisioning");
4698                 return;
4699         }
4700 #ifndef ANDROID_P2P
4701         if (wpa_s->show_group_started) {
4702                 /*
4703                  * Use the normal group formation timeout between the end of
4704                  * the provisioning phase and completion of 4-way handshake to
4705                  * avoid terminating this process too early due to group idle
4706                  * timeout.
4707                  */
4708                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4709                            "while waiting for initial 4-way handshake to "
4710                            "complete");
4711                 return;
4712         }
4713 #endif
4714
4715         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
4716                    timeout);
4717         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
4718                                wpa_s, NULL);
4719 }
4720
4721
4722 /* Returns 1 if the interface was removed */
4723 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4724                           u16 reason_code, const u8 *ie, size_t ie_len,
4725                           int locally_generated)
4726 {
4727         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4728                 return 0;
4729         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4730                 return 0;
4731
4732         if (!locally_generated)
4733                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4734                                  ie_len);
4735
4736         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
4737             wpa_s->current_ssid &&
4738             wpa_s->current_ssid->p2p_group &&
4739             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
4740                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
4741                            "session is ending");
4742                 if (wpas_p2p_group_delete(wpa_s,
4743                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
4744                     > 0)
4745                         return 1;
4746         }
4747
4748         return 0;
4749 }
4750
4751
4752 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4753                              u16 reason_code, const u8 *ie, size_t ie_len,
4754                              int locally_generated)
4755 {
4756         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4757                 return;
4758         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4759                 return;
4760
4761         if (!locally_generated)
4762                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4763                                    ie_len);
4764 }
4765
4766
4767 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
4768 {
4769         struct p2p_data *p2p = wpa_s->global->p2p;
4770
4771         if (p2p == NULL)
4772                 return;
4773
4774         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4775                 return;
4776
4777         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
4778                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
4779
4780         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
4781                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
4782
4783         if (wpa_s->wps &&
4784             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
4785                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
4786
4787         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
4788                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
4789
4790         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
4791                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
4792                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
4793                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
4794                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
4795         }
4796
4797         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
4798                 p2p_set_sec_dev_types(p2p,
4799                                       (void *) wpa_s->conf->sec_device_type,
4800                                       wpa_s->conf->num_sec_device_types);
4801
4802         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
4803                 int i;
4804                 p2p_remove_wps_vendor_extensions(p2p);
4805                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4806                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4807                                 continue;
4808                         p2p_add_wps_vendor_extension(
4809                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
4810                 }
4811         }
4812
4813         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
4814             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4815                 char country[3];
4816                 country[0] = wpa_s->conf->country[0];
4817                 country[1] = wpa_s->conf->country[1];
4818                 country[2] = 0x04;
4819                 p2p_set_country(p2p, country);
4820         }
4821
4822         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
4823                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
4824                                      wpa_s->conf->p2p_ssid_postfix ?
4825                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
4826                                      0);
4827         }
4828
4829         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
4830                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
4831
4832         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
4833                 u8 reg_class, channel;
4834                 int ret;
4835                 unsigned int r;
4836                 if (wpa_s->conf->p2p_listen_reg_class &&
4837                     wpa_s->conf->p2p_listen_channel) {
4838                         reg_class = wpa_s->conf->p2p_listen_reg_class;
4839                         channel = wpa_s->conf->p2p_listen_channel;
4840                 } else {
4841                         reg_class = 81;
4842                         /*
4843                          * Pick one of the social channels randomly as the
4844                          * listen channel.
4845                          */
4846                         os_get_random((u8 *) &r, sizeof(r));
4847                         channel = 1 + (r % 3) * 5;
4848                 }
4849                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
4850                 if (ret)
4851                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
4852                                    "failed: %d", ret);
4853         }
4854         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
4855                 u8 op_reg_class, op_channel, cfg_op_channel;
4856                 int ret = 0;
4857                 unsigned int r;
4858                 if (wpa_s->conf->p2p_oper_reg_class &&
4859                     wpa_s->conf->p2p_oper_channel) {
4860                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4861                         op_channel = wpa_s->conf->p2p_oper_channel;
4862                         cfg_op_channel = 1;
4863                 } else {
4864                         op_reg_class = 81;
4865                         /*
4866                          * Use random operation channel from (1, 6, 11)
4867                          *if no other preference is indicated.
4868                          */
4869                         os_get_random((u8 *) &r, sizeof(r));
4870                         op_channel = 1 + (r % 3) * 5;
4871                         cfg_op_channel = 0;
4872                 }
4873                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
4874                                            cfg_op_channel);
4875                 if (ret)
4876                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
4877                                    "failed: %d", ret);
4878         }
4879
4880         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
4881                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
4882                                       wpa_s->conf->p2p_pref_chan) < 0) {
4883                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
4884                                    "update failed");
4885                 }
4886         }
4887 }
4888
4889
4890 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
4891                      int duration)
4892 {
4893         if (!wpa_s->ap_iface)
4894                 return -1;
4895         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
4896                                    duration);
4897 }
4898
4899
4900 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
4901 {
4902         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4903                 return -1;
4904         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4905                 return -1;
4906
4907         wpa_s->global->cross_connection = enabled;
4908         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
4909
4910         if (!enabled) {
4911                 struct wpa_supplicant *iface;
4912
4913                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
4914                 {
4915                         if (iface->cross_connect_enabled == 0)
4916                                 continue;
4917
4918                         iface->cross_connect_enabled = 0;
4919                         iface->cross_connect_in_use = 0;
4920                         wpa_msg(iface->parent, MSG_INFO,
4921                                 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
4922                                 iface->ifname, iface->cross_connect_uplink);
4923                 }
4924         }
4925
4926         return 0;
4927 }
4928
4929
4930 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
4931 {
4932         struct wpa_supplicant *iface;
4933
4934         if (!uplink->global->cross_connection)
4935                 return;
4936
4937         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
4938                 if (!iface->cross_connect_enabled)
4939                         continue;
4940                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
4941                     0)
4942                         continue;
4943                 if (iface->ap_iface == NULL)
4944                         continue;
4945                 if (iface->cross_connect_in_use)
4946                         continue;
4947
4948                 iface->cross_connect_in_use = 1;
4949                 wpa_msg(iface->parent, MSG_INFO,
4950                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
4951                         iface->ifname, iface->cross_connect_uplink);
4952         }
4953 }
4954
4955
4956 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
4957 {
4958         struct wpa_supplicant *iface;
4959
4960         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
4961                 if (!iface->cross_connect_enabled)
4962                         continue;
4963                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
4964                     0)
4965                         continue;
4966                 if (!iface->cross_connect_in_use)
4967                         continue;
4968
4969                 wpa_msg(iface->parent, MSG_INFO,
4970                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
4971                         iface->ifname, iface->cross_connect_uplink);
4972                 iface->cross_connect_in_use = 0;
4973         }
4974 }
4975
4976
4977 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
4978 {
4979         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
4980             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
4981             wpa_s->cross_connect_disallowed)
4982                 wpas_p2p_disable_cross_connect(wpa_s);
4983         else
4984                 wpas_p2p_enable_cross_connect(wpa_s);
4985         if (!wpa_s->ap_iface &&
4986             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
4987                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
4988 }
4989
4990
4991 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
4992 {
4993         wpas_p2p_disable_cross_connect(wpa_s);
4994         if (!wpa_s->ap_iface &&
4995             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
4996                                          wpa_s, NULL))
4997                 wpas_p2p_set_group_idle_timeout(wpa_s);
4998 }
4999
5000
5001 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
5002 {
5003         struct wpa_supplicant *iface;
5004
5005         if (!wpa_s->global->cross_connection)
5006                 return;
5007
5008         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
5009                 if (iface == wpa_s)
5010                         continue;
5011                 if (iface->drv_flags &
5012                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
5013                         continue;
5014                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
5015                         continue;
5016
5017                 wpa_s->cross_connect_enabled = 1;
5018                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
5019                            sizeof(wpa_s->cross_connect_uplink));
5020                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
5021                            "%s to %s whenever uplink is available",
5022                            wpa_s->ifname, wpa_s->cross_connect_uplink);
5023
5024                 if (iface->ap_iface || iface->current_ssid == NULL ||
5025                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
5026                     iface->cross_connect_disallowed ||
5027                     iface->wpa_state != WPA_COMPLETED)
5028                         break;
5029
5030                 wpa_s->cross_connect_in_use = 1;
5031                 wpa_msg(wpa_s->parent, MSG_INFO,
5032                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
5033                         wpa_s->ifname, wpa_s->cross_connect_uplink);
5034                 break;
5035         }
5036 }
5037
5038
5039 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
5040 {
5041         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
5042             !wpa_s->p2p_in_provisioning)
5043                 return 0; /* not P2P client operation */
5044
5045         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
5046                    "session overlap");
5047         if (wpa_s != wpa_s->parent)
5048                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
5049
5050         if (wpa_s->global->p2p)
5051                 p2p_group_formation_failed(wpa_s->global->p2p);
5052
5053         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5054                              wpa_s->parent, NULL);
5055
5056         wpas_group_formation_completed(wpa_s, 0);
5057         return 1;
5058 }
5059
5060
5061 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
5062 {
5063         struct p2p_channels chan;
5064
5065         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
5066                 return;
5067
5068         os_memset(&chan, 0, sizeof(chan));
5069         if (wpas_p2p_setup_channels(wpa_s, &chan)) {
5070                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
5071                            "channel list");
5072                 return;
5073         }
5074
5075         p2p_update_channel_list(wpa_s->global->p2p, &chan);
5076 }
5077
5078
5079 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
5080 {
5081         struct wpa_global *global = wpa_s->global;
5082         int found = 0;
5083         const u8 *peer;
5084
5085         if (global->p2p == NULL)
5086                 return -1;
5087
5088         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
5089
5090         if (wpa_s->pending_interface_name[0] &&
5091             !is_zero_ether_addr(wpa_s->pending_interface_addr))
5092                 found = 1;
5093
5094         peer = p2p_get_go_neg_peer(global->p2p);
5095         if (peer) {
5096                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
5097                            MACSTR, MAC2STR(peer));
5098                 p2p_unauthorize(global->p2p, peer);
5099                 found = 1;
5100         }
5101
5102         wpas_p2p_stop_find(wpa_s);
5103
5104         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5105                 if (wpa_s == global->p2p_group_formation &&
5106                     (wpa_s->p2p_in_provisioning ||
5107                      wpa_s->parent->pending_interface_type ==
5108                      WPA_IF_P2P_CLIENT)) {
5109                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
5110                                    "formation found - cancelling",
5111                                    wpa_s->ifname);
5112                         found = 1;
5113                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5114                                              wpa_s->parent, NULL);
5115                         wpas_p2p_group_delete(wpa_s,
5116                                               P2P_GROUP_REMOVAL_REQUESTED);
5117                         break;
5118                 }
5119         }
5120
5121         if (!found) {
5122                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
5123                 return -1;
5124         }
5125
5126         return 0;
5127 }
5128
5129
5130 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
5131 {
5132         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
5133                 return;
5134
5135         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
5136                    "being available anymore");
5137         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
5138 }
5139
5140
5141 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
5142                                    int freq_24, int freq_5, int freq_overall)
5143 {
5144         struct p2p_data *p2p = wpa_s->global->p2p;
5145         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5146                 return;
5147         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
5148 }
5149
5150
5151 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
5152 {
5153         u8 peer[ETH_ALEN];
5154         struct p2p_data *p2p = wpa_s->global->p2p;
5155
5156         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5157                 return -1;
5158
5159         if (hwaddr_aton(addr, peer))
5160                 return -1;
5161
5162         return p2p_unauthorize(p2p, peer);
5163 }
5164
5165
5166 /**
5167  * wpas_p2p_disconnect - Disconnect from a P2P Group
5168  * @wpa_s: Pointer to wpa_supplicant data
5169  * Returns: 0 on success, -1 on failure
5170  *
5171  * This can be used to disconnect from a group in which the local end is a P2P
5172  * Client or to end a P2P Group in case the local end is the Group Owner. If a
5173  * virtual network interface was created for this group, that interface will be
5174  * removed. Otherwise, only the configured P2P group network will be removed
5175  * from the interface.
5176  */
5177 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
5178 {
5179
5180         if (wpa_s == NULL)
5181                 return -1;
5182
5183         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
5184                 -1 : 0;
5185 }
5186
5187
5188 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
5189 {
5190 #ifdef ANDROID_P2P
5191         struct wpa_supplicant *group = wpa_s;
5192 #endif
5193
5194         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5195                 return 0;
5196
5197 #ifdef ANDROID_P2P
5198         while (group && (group->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)) {
5199                 if(group->wpa_state == WPA_ASSOCIATED) {
5200                         /* WPA_ASSOCIATED hasn't moved to WPA_COMPLETED. So it could be in WPS
5201                          * or 4Way Hanshake phase. Avoid allowing scan during this time critical
5202                          * phase
5203                          */
5204                         wpa_printf(MSG_ERROR, "P2P: WPS/4way handshake in Progress."
5205                         " Defer SCAN ");
5206                         return 1;
5207                 }
5208                 group = group->next;
5209         }
5210 #endif
5211
5212         return p2p_in_progress(wpa_s->global->p2p);
5213 }
5214
5215
5216 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
5217                               struct wpa_ssid *ssid)
5218 {
5219         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
5220             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5221                                  wpa_s->parent, NULL) > 0) {
5222                 /**
5223                  * Remove the network by scheduling the group formation
5224                  * timeout to happen immediately. The teardown code
5225                  * needs to be scheduled to run asynch later so that we
5226                  * don't delete data from under ourselves unexpectedly.
5227                  * Calling wpas_p2p_group_formation_timeout directly
5228                  * causes a series of crashes in WPS failure scenarios.
5229                  */
5230                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
5231                            "P2P group network getting removed");
5232                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
5233                                        wpa_s->parent, NULL);
5234         }
5235 }
5236
5237
5238 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
5239                                           const u8 *addr, const u8 *ssid,
5240                                           size_t ssid_len)
5241 {
5242         struct wpa_ssid *s;
5243         size_t i;
5244
5245         for (s = wpa_s->conf->ssid; s; s = s->next) {
5246                 if (s->disabled != 2)
5247                         continue;
5248                 if (ssid &&
5249                     (ssid_len != s->ssid_len ||
5250                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
5251                         continue;
5252                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
5253                         return s; /* peer is GO in the persistent group */
5254                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
5255                         continue;
5256                 for (i = 0; i < s->num_p2p_clients; i++) {
5257                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
5258                                       addr, ETH_ALEN) == 0)
5259                                 return s; /* peer is P2P client in persistent
5260                                            * group */
5261                 }
5262         }
5263
5264         return NULL;
5265 }
5266
5267
5268 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
5269                                        const u8 *addr)
5270 {
5271         if (addr == NULL)
5272                 return;
5273         wpas_p2p_add_persistent_group_client(wpa_s, addr);
5274 }
5275
5276
5277 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
5278                                         int group_added)
5279 {
5280         struct wpa_supplicant *group = wpa_s;
5281         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
5282         if (wpa_s->global->p2p_group_formation)
5283                 group = wpa_s->global->p2p_group_formation;
5284         wpa_s = wpa_s->parent;
5285         offchannel_send_action_done(wpa_s);
5286         if (group_added)
5287                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
5288         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
5289         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
5290                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
5291                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
5292                          wpa_s->p2p_persistent_id,
5293                          wpa_s->p2p_pd_before_go_neg,
5294                          wpa_s->p2p_go_ht40);
5295 }
5296
5297
5298 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
5299 {
5300         if (!wpa_s->p2p_fallback_to_go_neg ||
5301             wpa_s->p2p_in_provisioning <= 5)
5302                 return 0;
5303
5304         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
5305                 return 0; /* peer operating as a GO */
5306
5307         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
5308                 "fallback to GO Negotiation");
5309         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
5310
5311         return 1;
5312 }
5313
5314
5315 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
5316 {
5317         const char *rn, *rn2;
5318         struct wpa_supplicant *ifs;
5319
5320         if (wpa_s->wpa_state > WPA_SCANNING) {
5321                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
5322                         "concurrent operation",
5323                         P2P_CONCURRENT_SEARCH_DELAY);
5324                 return P2P_CONCURRENT_SEARCH_DELAY;
5325         }
5326
5327         if (!wpa_s->driver->get_radio_name)
5328                 return 0;
5329         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
5330         if (rn == NULL || rn[0] == '\0')
5331                 return 0;
5332
5333         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
5334                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
5335                         continue;
5336
5337                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
5338                 if (!rn2 || os_strcmp(rn, rn2) != 0)
5339                         continue;
5340                 if (ifs->wpa_state > WPA_SCANNING) {
5341                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
5342                                 "delay due to concurrent operation on "
5343                                 "interface %s",
5344                                 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
5345                         return P2P_CONCURRENT_SEARCH_DELAY;
5346                 }
5347         }
5348
5349         return 0;
5350 }
5351
5352 #ifdef ANDROID_P2P
5353 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq)
5354 {
5355         struct wpa_supplicant *iface = NULL;
5356         struct p2p_data *p2p = wpa_s->global->p2p;
5357
5358         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
5359                 if((iface->p2p_group_interface) && (iface->current_ssid) &&
5360                         (iface->current_ssid->frequency != freq)) {
5361
5362                         if (iface->p2p_group_interface == P2P_GROUP_INTERFACE_GO) {
5363                                         /* Try to see whether we can move the GO. If it
5364                                          * is not possible, remove the GO interface
5365                                          */
5366                                         if(wpa_drv_switch_channel(iface, freq) == 0) {
5367                                                         wpa_printf(MSG_ERROR, "P2P: GO Moved to freq(%d)", freq);
5368                                                         iface->current_ssid->frequency = freq;
5369                                                         continue;
5370                                         }
5371                         }
5372
5373                         /* If GO cannot be moved or if the conflicting interface is a
5374                          * P2P Client, remove the interface depending up on the connection
5375                          * priority */
5376                         if(!wpas_is_p2p_prioritized(wpa_s)) {
5377                                 /* STA connection has priority over existing
5378                                  * P2P connection. So remove the interface */
5379                                 wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to Single channel"
5380                                                 "concurrent mode frequency conflict");
5381                                 wpas_p2p_group_delete(iface, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
5382                         } else {
5383                                 /* Existing connection has the priority. Disable the newly
5384                  * selected network and let the application know about it.
5385                                  */
5386                                 return -1;
5387                         }
5388                 }
5389         }
5390         return 0;
5391 }
5392 #endif