wpa_supplicant/p2p_supplicant.c

   1 /*
   2  * wpa_supplicant - P2P
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "common.h"
  18 #include "eloop.h"
  19 #include "common/ieee802_11_common.h"
  20 #include "common/ieee802_11_defs.h"
  21 #include "common/wpa_ctrl.h"
  22 #include "wps/wps_i.h"
  23 #include "p2p/p2p.h"
  24 #include "ap/hostapd.h"
  25 #include "ap/p2p_hostapd.h"
  26 #include "eapol_supp/eapol_supp_sm.h"
  27 #include "rsn_supp/wpa.h"
  28 #include "wpa_supplicant_i.h"
  29 #include "driver_i.h"
  30 #include "ap.h"
  31 #include "config_ssid.h"
  32 #include "config.h"
  33 #include "mlme.h"
  34 #include "notify.h"
  35 #include "scan.h"
  36 #include "bss.h"
  37 #include "wps_supplicant.h"
  38 #include "p2p_supplicant.h"
  39
  40
  41 /*
  42  * How many times to try to scan to find the GO before giving up on join
  43  * request.
  44  */
  45 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  46
  47
  48 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  49 static struct wpa_supplicant *
  50 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
  51                          int go);
  52 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s);
  53 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
  54 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
  55                          const u8 *dev_addr, enum p2p_wps_method wps_method);
  56 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
  57 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
  58 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
  59 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
  60
  61
  62 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
  63                                       struct wpa_scan_results *scan_res)
  64 {
  65         size_t i;
  66
  67         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  68                 return;
  69
  70         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
  71                    (int) scan_res->num);
  72
  73         for (i = 0; i < scan_res->num; i++) {
  74                 struct wpa_scan_res *bss = scan_res->res[i];
  75                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
  76                                          bss->freq, bss->level,
  77                                          (const u8 *) (bss + 1),
  78                                          bss->ie_len) > 0)
  79                         break;
  80         }
  81
  82         p2p_scan_res_handled(wpa_s->global->p2p);
  83 }
  84
  85
  86 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
  87                          unsigned int num_req_dev_types,
  88                          const u8 *req_dev_types)
  89 {
  90         struct wpa_supplicant *wpa_s = ctx;
  91         struct wpa_driver_scan_params params;
  92         int ret;
  93         struct wpabuf *wps_ie, *ies;
  94         int social_channels[] = { 2412, 2437, 2462, 0, 0 };
  95
  96         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
  97                 return -1;
  98
  99         os_memset(&params, 0, sizeof(params));
 100
 101         /* P2P Wildcard SSID */
 102         params.num_ssids = 1;
 103         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
 104         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 105
 106         wpa_s->wps->dev.p2p = 1;
 107         wps_ie = wps_build_probe_req_ie(0, &wpa_s->wps->dev, wpa_s->wps->uuid,
 108                                         WPS_REQ_ENROLLEE,
 109                                         num_req_dev_types, req_dev_types);
 110         if (wps_ie == NULL)
 111                 return -1;
 112
 113         ies = wpabuf_alloc(wpabuf_len(wps_ie) + 100);
 114         if (ies == NULL) {
 115                 wpabuf_free(wps_ie);
 116                 return -1;
 117         }
 118         wpabuf_put_buf(ies, wps_ie);
 119         wpabuf_free(wps_ie);
 120
 121         p2p_scan_ie(wpa_s->global->p2p, ies);
 122
 123         params.extra_ies = wpabuf_head(ies);
 124         params.extra_ies_len = wpabuf_len(ies);
 125
 126         switch (type) {
 127         case P2P_SCAN_SOCIAL:
 128                 params.freqs = social_channels;
 129                 break;
 130         case P2P_SCAN_FULL:
 131                 break;
 132         case P2P_SCAN_SPECIFIC:
 133                 social_channels[0] = freq;
 134                 social_channels[1] = 0;
 135                 params.freqs = social_channels;
 136                 break;
 137         case P2P_SCAN_SOCIAL_PLUS_ONE:
 138                 social_channels[3] = freq;
 139                 params.freqs = social_channels;
 140                 break;
 141         }
 142
 143         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 144         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
 145                 ret = ieee80211_sta_req_scan(wpa_s, &params);
 146         else
 147                 ret = wpa_drv_scan(wpa_s, &params);
 148
 149         wpabuf_free(ies);
 150
 151         return ret;
 152 }
 153
 154
 155 #ifdef CONFIG_CLIENT_MLME
 156 static void p2p_rx_action_mlme(void *ctx, const u8 *buf, size_t len, int freq)
 157 {
 158         struct wpa_supplicant *wpa_s = ctx;
 159         const struct ieee80211_mgmt *mgmt;
 160         size_t hdr_len;
 161
 162         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
 163                 return;
 164         mgmt = (const struct ieee80211_mgmt *) buf;
 165         hdr_len = (const u8 *) &mgmt->u.action.u.vs_public_action.action - buf;
 166         if (hdr_len > len)
 167                 return;
 168         p2p_rx_action(wpa_s->global->p2p, mgmt->da, mgmt->sa, mgmt->bssid,
 169                       mgmt->u.action.category,
 170                       &mgmt->u.action.u.vs_public_action.action,
 171                       len - hdr_len, freq);
 172 }
 173 #endif /* CONFIG_CLIENT_MLME */
 174
 175
 176 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 177 {
 178         switch (p2p_group_interface) {
 179         case P2P_GROUP_INTERFACE_PENDING:
 180                 return WPA_IF_P2P_GROUP;
 181         case P2P_GROUP_INTERFACE_GO:
 182                 return WPA_IF_P2P_GO;
 183         case P2P_GROUP_INTERFACE_CLIENT:
 184                 return WPA_IF_P2P_CLIENT;
 185         }
 186
 187         return WPA_IF_P2P_GROUP;
 188 }
 189
 190
 191 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 192                                                   const u8 *ssid,
 193                                                   size_t ssid_len, int *go)
 194 {
 195         struct wpa_ssid *s;
 196
 197         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 198                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 199                         if (s->disabled != 0 || !s->p2p_group ||
 200                             s->ssid_len != ssid_len ||
 201                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 202                                 continue;
 203                         if (s->mode == WPAS_MODE_P2P_GO &&
 204                             s != wpa_s->current_ssid)
 205                                 continue;
 206                         if (go)
 207                                 *go = s->mode == WPAS_MODE_P2P_GO;
 208                         return wpa_s;
 209                 }
 210         }
 211
 212         return NULL;
 213 }
 214
 215
 216 static void wpas_p2p_group_delete(struct wpa_supplicant *wpa_s)
 217 {
 218         struct wpa_ssid *ssid;
 219         char *gtype;
 220         const char *reason;
 221
 222         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
 223
 224         ssid = wpa_s->current_ssid;
 225         if (ssid == NULL) {
 226                 /*
 227                  * The current SSID was not known, but there may still be a
 228                  * pending P2P group interface waiting for provisioning.
 229                  */
 230                 ssid = wpa_s->conf->ssid;
 231                 while (ssid) {
 232                         if (ssid->p2p_group &&
 233                             (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 234                              (ssid->key_mgmt & WPA_KEY_MGMT_WPS)))
 235                                 break;
 236                         ssid = ssid->next;
 237                 }
 238         }
 239         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 240                 gtype = "GO";
 241         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 242                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 243                 wpa_s->reassociate = 0;
 244                 wpa_s->disconnected = 1;
 245                 wpa_supplicant_deauthenticate(wpa_s,
 246                                               WLAN_REASON_DEAUTH_LEAVING);
 247                 gtype = "client";
 248         } else
 249                 gtype = "GO";
 250         if (wpa_s->cross_connect_in_use) {
 251                 wpa_s->cross_connect_in_use = 0;
 252                 wpa_msg(wpa_s->parent, MSG_INFO,
 253                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 254                         wpa_s->ifname, wpa_s->cross_connect_uplink);
 255         }
 256         switch (wpa_s->removal_reason) {
 257         case P2P_GROUP_REMOVAL_REQUESTED:
 258                 reason = " reason=REQUESTED";
 259                 break;
 260         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 261                 reason = " reason=IDLE";
 262                 break;
 263         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 264                 reason = " reason=UNAVAILABLE";
 265                 break;
 266         default:
 267                 reason = "";
 268                 break;
 269         }
 270         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_REMOVED "%s %s%s",
 271                 wpa_s->ifname, gtype, reason);
 272
 273         if (ssid)
 274                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 275
 276         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 277                 struct wpa_global *global;
 278                 char *ifname;
 279                 enum wpa_driver_if_type type;
 280                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 281                         wpa_s->ifname);
 282                 global = wpa_s->global;
 283                 ifname = os_strdup(wpa_s->ifname);
 284                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 285                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 286                 wpa_s = global->ifaces;
 287                 if (wpa_s && ifname)
 288                         wpa_drv_if_remove(wpa_s, type, ifname);
 289                 os_free(ifname);
 290                 return;
 291         }
 292
 293         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 294         if (ssid && (ssid->p2p_group ||
 295                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 296                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 297                 int id = ssid->id;
 298                 if (ssid == wpa_s->current_ssid) {
 299                         wpa_sm_set_config(wpa_s->wpa, NULL);
 300                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 301                         wpa_s->current_ssid = NULL;
 302                 }
 303                 /*
 304                  * Networks objects created during any P2P activities are not
 305                  * exposed out as they might/will confuse certain non-P2P aware
 306                  * applications since these network objects won't behave like
 307                  * regular ones.
 308                  *
 309                  * Likewise, we don't send out network removed signals for such
 310                  * network objects.
 311                  */
 312                 wpa_config_remove_network(wpa_s->conf, id);
 313                 wpa_supplicant_clear_status(wpa_s);
 314         } else {
 315                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 316                            "found");
 317         }
 318         wpa_supplicant_ap_deinit(wpa_s);
 319 }
 320
 321
 322 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 323                                      u8 *go_dev_addr,
 324                                      const u8 *ssid, size_t ssid_len)
 325 {
 326         struct wpa_bss *bss;
 327         const u8 *bssid;
 328         struct wpabuf *p2p;
 329         u8 group_capab;
 330         const u8 *addr;
 331
 332         if (wpa_s->go_params)
 333                 bssid = wpa_s->go_params->peer_interface_addr;
 334         else
 335                 bssid = wpa_s->bssid;
 336
 337         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 338         if (bss == NULL) {
 339                 u8 iface_addr[ETH_ALEN];
 340                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 341                                            iface_addr) == 0)
 342                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 343         }
 344         if (bss == NULL) {
 345                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 346                            "group is persistent - BSS " MACSTR " not found",
 347                            MAC2STR(bssid));
 348                 return 0;
 349         }
 350
 351         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 352         if (p2p == NULL) {
 353                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 354                            "group is persistent - BSS " MACSTR
 355                            " did not include P2P IE", MAC2STR(bssid));
 356                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 357                             (u8 *) (bss + 1), bss->ie_len);
 358                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 359                             ((u8 *) bss + 1) + bss->ie_len,
 360                             bss->beacon_ie_len);
 361                 return 0;
 362         }
 363
 364         group_capab = p2p_get_group_capab(p2p);
 365         addr = p2p_get_go_dev_addr(p2p);
 366         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 367                    "group_capab=0x%x", group_capab);
 368         if (addr) {
 369                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
 370                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
 371                            MAC2STR(addr));
 372         } else
 373                 os_memset(go_dev_addr, 0, ETH_ALEN);
 374         wpabuf_free(p2p);
 375
 376         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
 377                    "go_dev_addr=" MACSTR,
 378                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
 379
 380         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
 381 }
 382
 383
 384 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
 385                                            struct wpa_ssid *ssid,
 386                                            const u8 *go_dev_addr)
 387 {
 388         struct wpa_ssid *s;
 389         int changed = 0;
 390
 391         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
 392                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
 393         for (s = wpa_s->conf->ssid; s; s = s->next) {
 394                 if (s->disabled == 2 &&
 395                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
 396                     s->ssid_len == ssid->ssid_len &&
 397                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
 398                         break;
 399         }
 400
 401         if (s) {
 402                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
 403                            "entry");
 404                 if (ssid->passphrase && !s->passphrase)
 405                         changed = 1;
 406                 else if (ssid->passphrase && s->passphrase &&
 407                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
 408                         changed = 1;
 409         } else {
 410                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
 411                            "entry");
 412                 changed = 1;
 413                 s = wpa_config_add_network(wpa_s->conf);
 414                 if (s == NULL)
 415                         return -1;
 416
 417                 /*
 418                  * Instead of network_added we emit persistent_group_added
 419                  * notification. Also to keep the defense checks in
 420                  * persistent_group obj registration method, we set the
 421                  * relevant flags in s to designate it as a persistent group.
 422                  */
 423                 s->p2p_group = 1;
 424                 s->p2p_persistent_group = 1;
 425                 wpas_notify_persistent_group_added(wpa_s, s);
 426                 wpa_config_set_network_defaults(s);
 427         }
 428
 429         s->p2p_group = 1;
 430         s->p2p_persistent_group = 1;
 431         s->disabled = 2;
 432         s->bssid_set = 1;
 433         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
 434         s->mode = ssid->mode;
 435         s->auth_alg = WPA_AUTH_ALG_OPEN;
 436         s->key_mgmt = WPA_KEY_MGMT_PSK;
 437         s->proto = WPA_PROTO_RSN;
 438         s->pairwise_cipher = WPA_CIPHER_CCMP;
 439         s->export_keys = 1;
 440         if (ssid->passphrase) {
 441                 os_free(s->passphrase);
 442                 s->passphrase = os_strdup(ssid->passphrase);
 443         }
 444         if (ssid->psk_set) {
 445                 s->psk_set = 1;
 446                 os_memcpy(s->psk, ssid->psk, 32);
 447         }
 448         if (s->passphrase && !s->psk_set)
 449                 wpa_config_update_psk(s);
 450         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
 451                 os_free(s->ssid);
 452                 s->ssid = os_malloc(ssid->ssid_len);
 453         }
 454         if (s->ssid) {
 455                 s->ssid_len = ssid->ssid_len;
 456                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
 457         }
 458
 459 #ifndef CONFIG_NO_CONFIG_WRITE
 460         if (changed && wpa_s->conf->update_config &&
 461             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 462                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 463         }
 464 #endif /* CONFIG_NO_CONFIG_WRITE */
 465
 466         return s->id;
 467 }
 468
 469
 470 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 471                                            int success)
 472 {
 473         struct wpa_ssid *ssid;
 474         const char *ssid_txt;
 475         int client;
 476         int persistent;
 477         u8 go_dev_addr[ETH_ALEN];
 478         int network_id = -1;
 479
 480         /*
 481          * This callback is likely called for the main interface. Update wpa_s
 482          * to use the group interface if a new interface was created for the
 483          * group.
 484          */
 485         if (wpa_s->global->p2p_group_formation)
 486                 wpa_s = wpa_s->global->p2p_group_formation;
 487         wpa_s->global->p2p_group_formation = NULL;
 488         wpa_s->p2p_in_provisioning = 0;
 489
 490         if (!success) {
 491                 wpa_msg(wpa_s->parent, MSG_INFO,
 492                         P2P_EVENT_GROUP_FORMATION_FAILURE);
 493                 wpas_p2p_group_delete(wpa_s);
 494                 return;
 495         }
 496
 497         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS);
 498
 499         ssid = wpa_s->current_ssid;
 500         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 501                 ssid->mode = WPAS_MODE_P2P_GO;
 502                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 503                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 504         }
 505
 506         persistent = 0;
 507         if (ssid) {
 508                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 509                 client = ssid->mode == WPAS_MODE_INFRA;
 510                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 511                         persistent = ssid->p2p_persistent_group;
 512 #ifndef ANDROID_BRCM_P2P_PATCH
 513                         os_memcpy(go_dev_addr, wpa_s->parent->own_addr,
 514                                   ETH_ALEN);
 515 #else
 516                         /* P2P_ADDR: Use p2p_dev_addr instead of own mac addr */
 517                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
 518                                   ETH_ALEN);
 519
 520 #endif
 521                 } else
 522                         persistent = wpas_p2p_persistent_group(wpa_s,
 523                                                                go_dev_addr,
 524                                                                ssid->ssid,
 525                                                                ssid->ssid_len);
 526         } else {
 527                 ssid_txt = "";
 528                 client = wpa_s->p2p_group_interface ==
 529                         P2P_GROUP_INTERFACE_CLIENT;
 530                 os_memset(go_dev_addr, 0, ETH_ALEN);
 531         }
 532
 533         wpa_s->show_group_started = 0;
 534         if (client) {
 535                 /*
 536                  * Indicate event only after successfully completed 4-way
 537                  * handshake, i.e., when the interface is ready for data
 538                  * packets.
 539                  */
 540                 wpa_s->show_group_started = 1;
 541         } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
 542                 char psk[65];
 543                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
 544                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 545                         "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR
 546                         "%s",
 547                         wpa_s->ifname, ssid_txt, ssid->frequency, psk,
 548                         MAC2STR(go_dev_addr),
 549                         persistent ? " [PERSISTENT]" : "");
 550                 wpas_p2p_cross_connect_setup(wpa_s);
 551                 wpas_p2p_set_group_idle_timeout(wpa_s);
 552         } else {
 553                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 554                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 555                         "go_dev_addr=" MACSTR "%s",
 556                         wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0,
 557                         ssid && ssid->passphrase ? ssid->passphrase : "",
 558                         MAC2STR(go_dev_addr),
 559                         persistent ? " [PERSISTENT]" : "");
 560                 wpas_p2p_cross_connect_setup(wpa_s);
 561                 wpas_p2p_set_group_idle_timeout(wpa_s);
 562         }
 563
 564         if (persistent)
 565                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
 566                                                              ssid, go_dev_addr);
 567         if (network_id < 0)
 568                 network_id = ssid->id;
 569         if (!client)
 570                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 571 }
 572
 573
 574 static struct wpa_supplicant *
 575 wpas_get_tx_interface(struct wpa_supplicant *wpa_s, const u8 *src)
 576 {
 577         struct wpa_supplicant *iface;
 578
 579         if (os_memcmp(src, wpa_s->own_addr, ETH_ALEN) == 0)
 580                 return wpa_s;
 581
 582         /*
 583          * Try to find a group interface that matches with the source address.
 584          */
 585         iface = wpa_s->global->ifaces;
 586         while (iface) {
 587                 if (os_memcmp(wpa_s->pending_action_src,
 588                               iface->own_addr, ETH_ALEN) == 0)
 589                         break;
 590                 iface = iface->next;
 591         }
 592         if (iface) {
 593                 wpa_printf(MSG_DEBUG, "P2P: Use group interface %s "
 594                            "instead of interface %s for Action TX",
 595                            iface->ifname, wpa_s->ifname);
 596                 return iface;
 597         }
 598
 599         return wpa_s;
 600 }
 601
 602
 603 static void wpas_send_action_cb(void *eloop_ctx, void *timeout_ctx)
 604 {
 605         struct wpa_supplicant *wpa_s = eloop_ctx;
 606         struct wpa_supplicant *iface;
 607         int res;
 608         int without_roc;
 609
 610         without_roc = wpa_s->pending_action_without_roc;
 611         wpa_s->pending_action_without_roc = 0;
 612         wpa_printf(MSG_DEBUG, "P2P: Send Action callback (without_roc=%d "
 613                    "pending_action_tx=%p)",
 614                    without_roc, wpa_s->pending_action_tx);
 615
 616         if (wpa_s->pending_action_tx == NULL)
 617                 return;
 618
 619         /*
 620          * This call is likely going to be on the P2P device instance if the
 621          * driver uses a separate interface for that purpose. However, some
 622          * Action frames are actually sent within a P2P Group and when that is
 623          * the case, we need to follow power saving (e.g., GO buffering the
 624          * frame for a client in PS mode or a client following the advertised
 625          * NoA from its GO). To make that easier for the driver, select the
 626          * correct group interface here.
 627          */
 628         iface = wpas_get_tx_interface(wpa_s, wpa_s->pending_action_src);
 629
 630         if (wpa_s->off_channel_freq != wpa_s->pending_action_freq &&
 631             wpa_s->pending_action_freq != 0 &&
 632             wpa_s->pending_action_freq != iface->assoc_freq) {
 633                 wpa_printf(MSG_DEBUG, "P2P: Pending Action frame TX "
 634                            "waiting for another freq=%u (off_channel_freq=%u "
 635                            "assoc_freq=%u)",
 636                            wpa_s->pending_action_freq,
 637                            wpa_s->off_channel_freq,
 638                            iface->assoc_freq);
 639                 if (without_roc && wpa_s->off_channel_freq == 0) {
 640                         /*
 641                          * We may get here if wpas_send_action() found us to be
 642                          * on the correct channel, but remain-on-channel cancel
 643                          * event was received before getting here.
 644                          */
 645                         wpa_printf(MSG_DEBUG, "P2P: Schedule "
 646                                    "remain-on-channel to send Action frame");
 647                         if (wpa_drv_remain_on_channel(
 648                                     wpa_s, wpa_s->pending_action_freq, 200) <
 649                             0) {
 650                                 wpa_printf(MSG_DEBUG, "P2P: Failed to request "
 651                                            "driver to remain on channel (%u "
 652                                            "MHz) for Action Frame TX",
 653                                            wpa_s->pending_action_freq);
 654                         } else {
 655                                 wpa_s->off_channel_freq = 0;
 656                                 wpa_s->roc_waiting_drv_freq =
 657                                         wpa_s->pending_action_freq;
 658                         }
 659                 }
 660                 return;
 661         }
 662
 663         wpa_printf(MSG_DEBUG, "P2P: Sending pending Action frame to "
 664                    MACSTR " using interface %s",
 665                    MAC2STR(wpa_s->pending_action_dst), iface->ifname);
 666         res = wpa_drv_send_action(iface, wpa_s->pending_action_freq, 0,
 667                                   wpa_s->pending_action_dst,
 668                                   wpa_s->pending_action_src,
 669                                   wpa_s->pending_action_bssid,
 670                                   wpabuf_head(wpa_s->pending_action_tx),
 671                                   wpabuf_len(wpa_s->pending_action_tx));
 672         if (res) {
 673                 wpa_printf(MSG_DEBUG, "P2P: Failed to send the pending "
 674                            "Action frame");
 675                 /*
 676                  * Use fake TX status event to allow P2P state machine to
 677                  * continue.
 678                  */
 679                 wpas_send_action_tx_status(
 680                         wpa_s, wpa_s->pending_action_dst,
 681                         wpabuf_head(wpa_s->pending_action_tx),
 682                         wpabuf_len(wpa_s->pending_action_tx),
 683                         P2P_SEND_ACTION_FAILED);
 684         }
 685 }
 686
 687
 688 void wpas_send_action_tx_status(struct wpa_supplicant *wpa_s, const u8 *dst,
 689                                 const u8 *data, size_t data_len,
 690                                 enum p2p_send_action_result result)
 691 {
 692         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
 693                 return;
 694         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
 695                 return;
 696
 697         if (wpa_s->pending_action_tx == NULL) {
 698                 wpa_printf(MSG_DEBUG, "P2P: Ignore Action TX status - no "
 699                            "pending operation");
 700                 return;
 701         }
 702
 703         if (os_memcmp(dst, wpa_s->pending_action_dst, ETH_ALEN) != 0) {
 704                 wpa_printf(MSG_DEBUG, "P2P: Ignore Action TX status - unknown "
 705                            "destination address");
 706                 return;
 707         }
 708
 709         wpabuf_free(wpa_s->pending_action_tx);
 710         wpa_s->pending_action_tx = NULL;
 711
 712         p2p_send_action_cb(wpa_s->global->p2p, wpa_s->pending_action_freq,
 713                            wpa_s->pending_action_dst,
 714                            wpa_s->pending_action_src,
 715                            wpa_s->pending_action_bssid,
 716                            result);
 717
 718         if (wpa_s->pending_pd_before_join &&
 719             (os_memcmp(wpa_s->pending_action_dst, wpa_s->pending_join_dev_addr,
 720                        ETH_ALEN) == 0 ||
 721              os_memcmp(wpa_s->pending_action_dst,
 722                        wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
 723                 wpa_s->pending_pd_before_join = 0;
 724                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
 725                            "join-existing-group operation");
 726                 wpas_p2p_join_start(wpa_s);
 727         }
 728 }
 729
 730
 731 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
 732                             const u8 *src, const u8 *bssid, const u8 *buf,
 733                             size_t len, unsigned int wait_time)
 734 {
 735         struct wpa_supplicant *wpa_s = ctx;
 736
 737         wpa_printf(MSG_DEBUG, "P2P: Send action frame: freq=%d dst=" MACSTR
 738                    " src=" MACSTR " bssid=" MACSTR " len=%d",
 739                    freq, MAC2STR(dst), MAC2STR(src), MAC2STR(bssid),
 740                    (int) len);
 741
 742         if (wpa_s->pending_action_tx) {
 743                 wpa_printf(MSG_DEBUG, "P2P: Dropped pending Action frame TX "
 744                            "to " MACSTR, MAC2STR(wpa_s->pending_action_dst));
 745                 wpabuf_free(wpa_s->pending_action_tx);
 746         }
 747         wpa_s->pending_action_tx = wpabuf_alloc(len);
 748         if (wpa_s->pending_action_tx == NULL) {
 749                 wpa_printf(MSG_DEBUG, "P2P: Failed to allocate Action frame "
 750                            "TX buffer (len=%llu)", (unsigned long long) len);
 751                 return -1;
 752         }
 753         wpabuf_put_data(wpa_s->pending_action_tx, buf, len);
 754         os_memcpy(wpa_s->pending_action_src, src, ETH_ALEN);
 755         os_memcpy(wpa_s->pending_action_dst, dst, ETH_ALEN);
 756         os_memcpy(wpa_s->pending_action_bssid, bssid, ETH_ALEN);
 757         wpa_s->pending_action_freq = freq;
 758
 759         if (freq != 0 && wpa_s->drv_flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) {
 760                 struct wpa_supplicant *iface;
 761
 762                 iface = wpas_get_tx_interface(wpa_s, wpa_s->pending_action_src);
 763                 wpa_s->action_tx_wait_time = wait_time;
 764
 765                 return wpa_drv_send_action(iface, wpa_s->pending_action_freq,
 766                                         wait_time, wpa_s->pending_action_dst,
 767                                         wpa_s->pending_action_src,
 768                                         wpa_s->pending_action_bssid,
 769                                         wpabuf_head(wpa_s->pending_action_tx),
 770                                         wpabuf_len(wpa_s->pending_action_tx));
 771         }
 772
 773         if (freq) {
 774                 struct wpa_supplicant *tx_iface;
 775                 tx_iface = wpas_get_tx_interface(wpa_s, src);
 776                 if (tx_iface->assoc_freq == freq) {
 777                         wpa_printf(MSG_DEBUG, "P2P: Already on requested "
 778                                    "channel (TX interface operating channel)");
 779                         freq = 0;
 780                 }
 781         }
 782
 783         if (wpa_s->off_channel_freq == freq || freq == 0) {
 784                 wpa_printf(MSG_DEBUG, "P2P: Already on requested channel; "
 785                            "send Action frame immediately");
 786                 /* TODO: Would there ever be need to extend the current
 787                  * duration on the channel? */
 788                 wpa_s->pending_action_without_roc = 1;
 789                 eloop_cancel_timeout(wpas_send_action_cb, wpa_s, NULL);
 790                 eloop_register_timeout(0, 0, wpas_send_action_cb, wpa_s, NULL);
 791                 return 0;
 792         }
 793         wpa_s->pending_action_without_roc = 0;
 794
 795         if (wpa_s->roc_waiting_drv_freq == freq) {
 796                 wpa_printf(MSG_DEBUG, "P2P: Already waiting for driver to get "
 797                            "to frequency %u MHz; continue waiting to send the "
 798                            "Action frame", freq);
 799                 return 0;
 800         }
 801
 802         wpa_printf(MSG_DEBUG, "P2P: Schedule Action frame to be transmitted "
 803                    "once the driver gets to the requested channel");
 804         if (wait_time > wpa_s->max_remain_on_chan)
 805                 wait_time = wpa_s->max_remain_on_chan;
 806         if (wpa_drv_remain_on_channel(wpa_s, freq, wait_time) < 0) {
 807                 wpa_printf(MSG_DEBUG, "P2P: Failed to request driver "
 808                            "to remain on channel (%u MHz) for Action "
 809                            "Frame TX", freq);
 810                 return -1;
 811         }
 812         wpa_s->off_channel_freq = 0;
 813         wpa_s->roc_waiting_drv_freq = freq;
 814
 815         return 0;
 816 }
 817
 818
 819 static void wpas_send_action_done(void *ctx)
 820 {
 821         struct wpa_supplicant *wpa_s = ctx;
 822         wpa_printf(MSG_DEBUG, "P2P: Action frame sequence done notification");
 823         wpabuf_free(wpa_s->pending_action_tx);
 824         wpa_s->pending_action_tx = NULL;
 825         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OFFCHANNEL_TX) {
 826                 if (wpa_s->action_tx_wait_time)
 827                         wpa_drv_send_action_cancel_wait(wpa_s);
 828                 wpa_s->off_channel_freq = 0;
 829         } else if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
 830                 wpa_drv_cancel_remain_on_channel(wpa_s);
 831                 wpa_s->off_channel_freq = 0;
 832                 wpa_s->roc_waiting_drv_freq = 0;
 833         }
 834 }
 835
 836
 837 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
 838                                     struct p2p_go_neg_results *params)
 839 {
 840         if (wpa_s->go_params == NULL) {
 841                 wpa_s->go_params = os_malloc(sizeof(*params));
 842                 if (wpa_s->go_params == NULL)
 843                         return -1;
 844         }
 845         os_memcpy(wpa_s->go_params, params, sizeof(*params));
 846         return 0;
 847 }
 848
 849
 850 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
 851                                     struct p2p_go_neg_results *res)
 852 {
 853         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR,
 854                    MAC2STR(res->peer_interface_addr));
 855         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
 856                           res->ssid, res->ssid_len);
 857         wpa_supplicant_ap_deinit(wpa_s);
 858         wpas_copy_go_neg_results(wpa_s, res);
 859         if (res->wps_method == WPS_PBC)
 860                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
 861         else {
 862                 u16 dev_pw_id = DEV_PW_DEFAULT;
 863                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
 864                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
 865                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
 866                                    wpa_s->p2p_pin, 1, dev_pw_id);
 867         }
 868 }
 869
 870
 871 static void p2p_go_configured(void *ctx, void *data)
 872 {
 873         struct wpa_supplicant *wpa_s = ctx;
 874         struct p2p_go_neg_results *params = data;
 875         struct wpa_ssid *ssid;
 876         int network_id = -1;
 877
 878         ssid = wpa_s->current_ssid;
 879         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
 880                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
 881                 if (wpa_s->global->p2p_group_formation == wpa_s)
 882                         wpa_s->global->p2p_group_formation = NULL;
 883                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 884                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 885                         "go_dev_addr=" MACSTR "%s",
 886                         wpa_s->ifname,
 887                         wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
 888                         ssid->frequency,
 889                         params->passphrase ? params->passphrase : "",
 890 #ifndef ANDROID_BRCM_P2P_PATCH
 891                         MAC2STR(wpa_s->parent->own_addr),
 892 #else
 893                         /* P2P_ADDR: use p2p_dev_addr instead of own addr */
 894                         MAC2STR(wpa_s->global->p2p_dev_addr),
 895 #endif
 896                         params->persistent_group ? " [PERSISTENT]" : "");
 897                 if (params->persistent_group)
 898                         network_id = wpas_p2p_store_persistent_group(
 899                                 wpa_s->parent, ssid,
 900 #ifndef ANDROID_BRCM_P2P_PATCH
 901                                 wpa_s->parent->own_addr);
 902 #else
 903                                 /* P2P_ADDR: Use p2p device address */
 904                                 wpa_s->global->p2p_dev_addr);
 905 #endif
 906                 if (network_id < 0)
 907                         network_id = ssid->id;
 908                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 909                 wpas_p2p_cross_connect_setup(wpa_s);
 910                 wpas_p2p_set_group_idle_timeout(wpa_s);
 911                 return;
 912         }
 913
 914         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
 915         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
 916                                               params->peer_interface_addr)) {
 917                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
 918                            "filtering");
 919                 return;
 920         }
 921         if (params->wps_method == WPS_PBC)
 922                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
 923                                           NULL);
 924         else if (wpa_s->p2p_pin[0])
 925                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
 926                                           wpa_s->p2p_pin, NULL, 0);
 927         os_free(wpa_s->go_params);
 928         wpa_s->go_params = NULL;
 929 }
 930
 931
 932 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
 933                               struct p2p_go_neg_results *params,
 934                               int group_formation)
 935 {
 936         struct wpa_ssid *ssid;
 937
 938         if (wpas_copy_go_neg_results(wpa_s, params) < 0)
 939                 return;
 940
 941         ssid = wpa_config_add_network(wpa_s->conf);
 942         if (ssid == NULL)
 943                 return;
 944
 945         wpa_config_set_network_defaults(ssid);
 946         ssid->temporary = 1;
 947         ssid->p2p_group = 1;
 948         ssid->p2p_persistent_group = params->persistent_group;
 949         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
 950                 WPAS_MODE_P2P_GO;
 951         ssid->frequency = params->freq;
 952         ssid->ssid = os_zalloc(params->ssid_len + 1);
 953         if (ssid->ssid) {
 954                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
 955                 ssid->ssid_len = params->ssid_len;
 956         }
 957         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 958         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 959         ssid->proto = WPA_PROTO_RSN;
 960         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 961         ssid->passphrase = os_strdup(params->passphrase);
 962
 963         wpa_s->ap_configured_cb = p2p_go_configured;
 964         wpa_s->ap_configured_cb_ctx = wpa_s;
 965         wpa_s->ap_configured_cb_data = wpa_s->go_params;
 966         wpa_s->connect_without_scan = ssid;
 967         wpa_s->reassociate = 1;
 968         wpa_s->disconnected = 0;
 969         wpa_supplicant_req_scan(wpa_s, 0, 0);
 970 }
 971
 972
 973 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
 974                                   const struct wpa_supplicant *src)
 975 {
 976         struct wpa_config *d;
 977         const struct wpa_config *s;
 978
 979         d = dst->conf;
 980         s = src->conf;
 981
 982 #define C(n) if (s->n) d->n = os_strdup(s->n)
 983         C(device_name);
 984         C(manufacturer);
 985         C(model_name);
 986         C(model_number);
 987         C(serial_number);
 988         C(config_methods);
 989 #undef C
 990
 991         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
 992         os_memcpy(d->sec_device_type, s->sec_device_type,
 993                   sizeof(d->sec_device_type));
 994         d->num_sec_device_types = s->num_sec_device_types;
 995
 996         d->p2p_group_idle = s->p2p_group_idle;
 997         d->p2p_intra_bss = s->p2p_intra_bss;
 998 }
 999
1000
1001 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1002                                         enum wpa_driver_if_type type)
1003 {
1004         char ifname[120], force_ifname[120];
1005
1006         if (wpa_s->pending_interface_name[0]) {
1007                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1008                            "- skip creation of a new one");
1009                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1010                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1011                                    "unknown?! ifname='%s'",
1012                                    wpa_s->pending_interface_name);
1013                         return -1;
1014                 }
1015                 return 0;
1016         }
1017
1018         os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname,
1019                     wpa_s->p2p_group_idx);
1020
1021 #ifdef ANDROID_BRCM_P2P_PATCH
1022         /**
1023          * Monitor interface name is derived from p2p interface name
1024          * We need to reset p2p interface name early to take care of extra character in monitor interface name
1025          */
1026         if (os_strlen(ifname) + os_strlen(WPA_MONITOR_IFNAME_PREFIX)  >= IFNAMSIZ &&
1027 #else
1028         if (os_strlen(ifname) >= IFNAMSIZ  &&
1029 #endif
1030             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1031                 /* Try to avoid going over the IFNAMSIZ length limit */
1032                 os_snprintf(ifname, sizeof(ifname), "p2p-%d",
1033                             wpa_s->p2p_group_idx);
1034         }
1035         force_ifname[0] = '\0';
1036
1037         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1038                    ifname);
1039         wpa_s->p2p_group_idx++;
1040
1041         wpa_s->pending_interface_type = type;
1042         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1043                            wpa_s->pending_interface_addr, NULL) < 0) {
1044                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1045                            "interface");
1046                 return -1;
1047         }
1048
1049         if (force_ifname[0]) {
1050                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1051                            force_ifname);
1052                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1053                            sizeof(wpa_s->pending_interface_name));
1054         } else
1055                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1056                            sizeof(wpa_s->pending_interface_name));
1057         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1058                    MACSTR, wpa_s->pending_interface_name,
1059                    MAC2STR(wpa_s->pending_interface_addr));
1060
1061         return 0;
1062 }
1063
1064
1065 static void wpas_p2p_remove_pending_group_interface(
1066         struct wpa_supplicant *wpa_s)
1067 {
1068         if (!wpa_s->pending_interface_name[0] ||
1069             is_zero_ether_addr(wpa_s->pending_interface_addr))
1070                 return; /* No pending virtual interface */
1071
1072         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1073                    wpa_s->pending_interface_name);
1074         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1075                           wpa_s->pending_interface_name);
1076         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1077         wpa_s->pending_interface_name[0] = '\0';
1078 }
1079
1080
1081 static struct wpa_supplicant *
1082 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1083 {
1084         struct wpa_interface iface;
1085         struct wpa_supplicant *group_wpa_s;
1086
1087         if (!wpa_s->pending_interface_name[0]) {
1088                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1089                 if (!wpas_p2p_create_iface(wpa_s))
1090                         return NULL;
1091                 /*
1092                  * Something has forced us to remove the pending interface; try
1093                  * to create a new one and hope for the best that we will get
1094                  * the same local address.
1095                  */
1096                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1097                                                  WPA_IF_P2P_CLIENT) < 0)
1098                         return NULL;
1099         }
1100
1101         os_memset(&iface, 0, sizeof(iface));
1102         iface.ifname = wpa_s->pending_interface_name;
1103         iface.driver = wpa_s->driver->name;
1104         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1105         iface.driver_param = wpa_s->conf->driver_param;
1106         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1107         if (group_wpa_s == NULL) {
1108                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1109                            "wpa_supplicant interface");
1110                 return NULL;
1111         }
1112         wpa_s->pending_interface_name[0] = '\0';
1113         group_wpa_s->parent = wpa_s;
1114         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1115                 P2P_GROUP_INTERFACE_CLIENT;
1116         wpa_s->global->p2p_group_formation = group_wpa_s;
1117
1118         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1119
1120         return group_wpa_s;
1121 }
1122
1123
1124 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1125                                              void *timeout_ctx)
1126 {
1127         struct wpa_supplicant *wpa_s = eloop_ctx;
1128         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1129         if (wpa_s->global->p2p)
1130                 p2p_group_formation_failed(wpa_s->global->p2p);
1131         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1132                 wpa_drv_p2p_group_formation_failed(wpa_s);
1133         wpas_group_formation_completed(wpa_s, 0);
1134 }
1135
1136
1137 void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1138 {
1139         struct wpa_supplicant *wpa_s = ctx;
1140
1141         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1142                 wpa_drv_cancel_remain_on_channel(wpa_s);
1143                 wpa_s->off_channel_freq = 0;
1144                 wpa_s->roc_waiting_drv_freq = 0;
1145         }
1146
1147         if (res->status) {
1148                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d",
1149                         res->status);
1150                 wpas_notify_p2p_go_neg_completed(wpa_s, res->status);
1151                 wpas_p2p_remove_pending_group_interface(wpa_s);
1152                 return;
1153         }
1154
1155         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS);
1156         wpas_notify_p2p_go_neg_completed(wpa_s, P2P_SC_SUCCESS);
1157
1158         if (wpa_s->create_p2p_iface) {
1159                 struct wpa_supplicant *group_wpa_s =
1160                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1161                 if (group_wpa_s == NULL) {
1162                         wpas_p2p_remove_pending_group_interface(wpa_s);
1163                         return;
1164                 }
1165                 if (group_wpa_s != wpa_s) {
1166                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1167                                   sizeof(group_wpa_s->p2p_pin));
1168                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1169                 }
1170                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1171                 wpa_s->pending_interface_name[0] = '\0';
1172                 group_wpa_s->p2p_in_provisioning = 1;
1173
1174                 if (res->role_go)
1175                         wpas_start_wps_go(group_wpa_s, res, 1);
1176                 else
1177                         wpas_start_wps_enrollee(group_wpa_s, res);
1178         } else {
1179                 wpa_s->p2p_in_provisioning = 1;
1180                 wpa_s->global->p2p_group_formation = wpa_s;
1181
1182                 if (res->role_go)
1183                         wpas_start_wps_go(wpa_s, res, 1);
1184                 else
1185                         wpas_start_wps_enrollee(ctx, res);
1186         }
1187
1188         wpa_s->p2p_long_listen = 0;
1189         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1190
1191         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1192         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1193                                (res->peer_config_timeout % 100) * 10000,
1194                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1195 }
1196
1197
1198 void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1199 {
1200         struct wpa_supplicant *wpa_s = ctx;
1201         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1202                 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1203
1204         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1205 }
1206
1207
1208 void wpas_dev_found(void *ctx, const u8 *addr,
1209                     const struct p2p_peer_info *info,
1210                     int new_device)
1211 {
1212         struct wpa_supplicant *wpa_s = ctx;
1213         char devtype[WPS_DEV_TYPE_BUFSIZE];
1214
1215         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1216                 " p2p_dev_addr=" MACSTR
1217                 " pri_dev_type=%s name='%s' config_methods=0x%x "
1218                 "dev_capab=0x%x group_capab=0x%x",
1219                 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1220                 wps_dev_type_bin2str(info->pri_dev_type, devtype,
1221                                      sizeof(devtype)),
1222                 info->device_name, info->config_methods,
1223                 info->dev_capab, info->group_capab);
1224
1225         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1226 }
1227
1228
1229 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1230 {
1231         struct wpa_supplicant *wpa_s = ctx;
1232 #ifdef ANDROID_BRCM_P2P_PATCH
1233         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1234                 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1235 #endif
1236         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1237 }
1238
1239
1240 static int wpas_start_listen(void *ctx, unsigned int freq,
1241                              unsigned int duration,
1242                              const struct wpabuf *probe_resp_ie)
1243 {
1244         struct wpa_supplicant *wpa_s = ctx;
1245
1246         wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL);
1247
1248         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1249                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1250                            "report received Probe Request frames");
1251                 return -1;
1252         }
1253
1254         wpa_s->pending_listen_freq = freq;
1255         wpa_s->pending_listen_duration = duration;
1256
1257         if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) {
1258                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1259                            "to remain on channel (%u MHz) for Listen "
1260                            "state", freq);
1261                 wpa_s->pending_listen_freq = 0;
1262                 return -1;
1263         }
1264         wpa_s->off_channel_freq = 0;
1265         wpa_s->roc_waiting_drv_freq = freq;
1266
1267         return 0;
1268 }
1269
1270
1271 static void wpas_stop_listen(void *ctx)
1272 {
1273         struct wpa_supplicant *wpa_s = ctx;
1274         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1275                 wpa_drv_cancel_remain_on_channel(wpa_s);
1276                 wpa_s->off_channel_freq = 0;
1277                 wpa_s->roc_waiting_drv_freq = 0;
1278         }
1279         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1280         wpa_drv_probe_req_report(wpa_s, 0);
1281 }
1282
1283
1284 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1285 {
1286         struct wpa_supplicant *wpa_s = ctx;
1287         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf));
1288 }
1289
1290
1291 static struct p2p_srv_bonjour *
1292 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1293                              const struct wpabuf *query)
1294 {
1295         struct p2p_srv_bonjour *bsrv;
1296         size_t len;
1297
1298         len = wpabuf_len(query);
1299         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1300                          struct p2p_srv_bonjour, list) {
1301                 if (len == wpabuf_len(bsrv->query) &&
1302                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1303                               len) == 0)
1304                         return bsrv;
1305         }
1306         return NULL;
1307 }
1308
1309
1310 static struct p2p_srv_upnp *
1311 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
1312                           const char *service)
1313 {
1314         struct p2p_srv_upnp *usrv;
1315
1316         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1317                          struct p2p_srv_upnp, list) {
1318                 if (version == usrv->version &&
1319                     os_strcmp(service, usrv->service) == 0)
1320                         return usrv;
1321         }
1322         return NULL;
1323 }
1324
1325
1326 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
1327                                         u8 srv_trans_id)
1328 {
1329         u8 *len_pos;
1330
1331         if (wpabuf_tailroom(resp) < 5)
1332                 return;
1333
1334         /* Length (to be filled) */
1335         len_pos = wpabuf_put(resp, 2);
1336         wpabuf_put_u8(resp, srv_proto);
1337         wpabuf_put_u8(resp, srv_trans_id);
1338         /* Status Code */
1339         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
1340         /* Response Data: empty */
1341         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1342 }
1343
1344
1345 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
1346                                 struct wpabuf *resp, u8 srv_trans_id)
1347 {
1348         struct p2p_srv_bonjour *bsrv;
1349         u8 *len_pos;
1350
1351         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
1352
1353         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1354                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1355                 return;
1356         }
1357
1358         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1359                          struct p2p_srv_bonjour, list) {
1360                 if (wpabuf_tailroom(resp) <
1361                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
1362                         return;
1363                 /* Length (to be filled) */
1364                 len_pos = wpabuf_put(resp, 2);
1365                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1366                 wpabuf_put_u8(resp, srv_trans_id);
1367                 /* Status Code */
1368                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1369                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1370                                   wpabuf_head(bsrv->resp),
1371                                   wpabuf_len(bsrv->resp));
1372                 /* Response Data */
1373                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1374                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1375                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1376                              2);
1377         }
1378 }
1379
1380
1381 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
1382                                 struct wpabuf *resp, u8 srv_trans_id,
1383                                 const u8 *query, size_t query_len)
1384 {
1385         struct p2p_srv_bonjour *bsrv;
1386         struct wpabuf buf;
1387         u8 *len_pos;
1388
1389         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
1390                           query, query_len);
1391         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1392                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1393                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
1394                                             srv_trans_id);
1395                 return;
1396         }
1397
1398         if (query_len == 0) {
1399                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1400                 return;
1401         }
1402
1403         if (wpabuf_tailroom(resp) < 5)
1404                 return;
1405         /* Length (to be filled) */
1406         len_pos = wpabuf_put(resp, 2);
1407         wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1408         wpabuf_put_u8(resp, srv_trans_id);
1409
1410         wpabuf_set(&buf, query, query_len);
1411         bsrv = wpas_p2p_service_get_bonjour(wpa_s, &buf);
1412         if (bsrv == NULL) {
1413                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
1414                            "available");
1415
1416                 /* Status Code */
1417                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1418                 /* Response Data: empty */
1419                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1420                              2);
1421                 return;
1422         }
1423
1424         /* Status Code */
1425         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1426         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1427                           wpabuf_head(bsrv->resp), wpabuf_len(bsrv->resp));
1428
1429         if (wpabuf_tailroom(resp) >=
1430             wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp)) {
1431                 /* Response Data */
1432                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1433                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1434         }
1435         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1436 }
1437
1438
1439 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
1440                              struct wpabuf *resp, u8 srv_trans_id)
1441 {
1442         struct p2p_srv_upnp *usrv;
1443         u8 *len_pos;
1444
1445         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
1446
1447         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1448                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1449                 return;
1450         }
1451
1452         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1453                          struct p2p_srv_upnp, list) {
1454                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
1455                         return;
1456
1457                 /* Length (to be filled) */
1458                 len_pos = wpabuf_put(resp, 2);
1459                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
1460                 wpabuf_put_u8(resp, srv_trans_id);
1461
1462                 /* Status Code */
1463                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1464                 /* Response Data */
1465                 wpabuf_put_u8(resp, usrv->version);
1466                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1467                            usrv->service);
1468                 wpabuf_put_str(resp, usrv->service);
1469                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1470                              2);
1471         }
1472 }
1473
1474
1475 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
1476                              struct wpabuf *resp, u8 srv_trans_id,
1477                              const u8 *query, size_t query_len)
1478 {
1479         struct p2p_srv_upnp *usrv;
1480         u8 *len_pos;
1481         u8 version;
1482         char *str;
1483         int count = 0;
1484
1485         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
1486                           query, query_len);
1487
1488         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1489                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1490                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
1491                                             srv_trans_id);
1492                 return;
1493         }
1494
1495         if (query_len == 0) {
1496                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1497                 return;
1498         }
1499
1500         if (wpabuf_tailroom(resp) < 5)
1501                 return;
1502
1503         /* Length (to be filled) */
1504         len_pos = wpabuf_put(resp, 2);
1505         wpabuf_put_u8(resp, P2P_SERV_UPNP);
1506         wpabuf_put_u8(resp, srv_trans_id);
1507
1508         version = query[0];
1509         str = os_malloc(query_len);
1510         if (str == NULL)
1511                 return;
1512         os_memcpy(str, query + 1, query_len - 1);
1513         str[query_len - 1] = '\0';
1514
1515         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1516                          struct p2p_srv_upnp, list) {
1517                 if (version != usrv->version)
1518                         continue;
1519
1520                 if (os_strcmp(str, "ssdp:all") != 0 &&
1521                     os_strstr(usrv->service, str) == NULL)
1522                         continue;
1523
1524                 if (wpabuf_tailroom(resp) < 2)
1525                         break;
1526                 if (count == 0) {
1527                         /* Status Code */
1528                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1529                         /* Response Data */
1530                         wpabuf_put_u8(resp, version);
1531                 } else
1532                         wpabuf_put_u8(resp, ',');
1533
1534                 count++;
1535
1536                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1537                            usrv->service);
1538                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
1539                         break;
1540                 wpabuf_put_str(resp, usrv->service);
1541         }
1542         os_free(str);
1543
1544         if (count == 0) {
1545                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
1546                            "available");
1547                 /* Status Code */
1548                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1549                 /* Response Data: empty */
1550         }
1551
1552         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1553 }
1554
1555
1556 void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
1557                      u16 update_indic, const u8 *tlvs, size_t tlvs_len)
1558 {
1559         struct wpa_supplicant *wpa_s = ctx;
1560         const u8 *pos = tlvs;
1561         const u8 *end = tlvs + tlvs_len;
1562         const u8 *tlv_end;
1563         u16 slen;
1564         struct wpabuf *resp;
1565         u8 srv_proto, srv_trans_id;
1566         size_t buf_len;
1567         char *buf;
1568
1569         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
1570                     tlvs, tlvs_len);
1571         buf_len = 2 * tlvs_len + 1;
1572         buf = os_malloc(buf_len);
1573         if (buf) {
1574                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1575                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
1576                              MACSTR " %u %u %s",
1577                              freq, MAC2STR(sa), dialog_token, update_indic,
1578                              buf);
1579                 os_free(buf);
1580         }
1581
1582         if (wpa_s->p2p_sd_over_ctrl_iface)
1583                 return; /* to be processed by an external program */
1584
1585         resp = wpabuf_alloc(10000);
1586         if (resp == NULL)
1587                 return;
1588
1589         while (pos + 1 < end) {
1590                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
1591                 slen = WPA_GET_LE16(pos);
1592                 pos += 2;
1593                 if (pos + slen > end || slen < 2) {
1594                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
1595                                    "length");
1596                         wpabuf_free(resp);
1597                         return;
1598                 }
1599                 tlv_end = pos + slen;
1600
1601                 srv_proto = *pos++;
1602                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1603                            srv_proto);
1604                 srv_trans_id = *pos++;
1605                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1606                            srv_trans_id);
1607
1608                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
1609                             pos, tlv_end - pos);
1610
1611
1612                 if (wpa_s->force_long_sd) {
1613                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
1614                                    "response");
1615                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1616                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1617                         goto done;
1618                 }
1619
1620                 switch (srv_proto) {
1621                 case P2P_SERV_ALL_SERVICES:
1622                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
1623                                    "for all services");
1624                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
1625                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1626                                 wpa_printf(MSG_DEBUG, "P2P: No service "
1627                                            "discovery protocols available");
1628                                 wpas_sd_add_proto_not_avail(
1629                                         resp, P2P_SERV_ALL_SERVICES,
1630                                         srv_trans_id);
1631                                 break;
1632                         }
1633                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1634                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1635                         break;
1636                 case P2P_SERV_BONJOUR:
1637                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
1638                                             pos, tlv_end - pos);
1639                         break;
1640                 case P2P_SERV_UPNP:
1641                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
1642                                          pos, tlv_end - pos);
1643                         break;
1644                 default:
1645                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
1646                                    "protocol %u", srv_proto);
1647                         wpas_sd_add_proto_not_avail(resp, srv_proto,
1648                                                     srv_trans_id);
1649                         break;
1650                 }
1651
1652                 pos = tlv_end;
1653         }
1654
1655 done:
1656         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1657                                    update_indic, tlvs, tlvs_len);
1658
1659         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
1660
1661         wpabuf_free(resp);
1662 }
1663
1664
1665 void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
1666                       const u8 *tlvs, size_t tlvs_len)
1667 {
1668         struct wpa_supplicant *wpa_s = ctx;
1669         const u8 *pos = tlvs;
1670         const u8 *end = tlvs + tlvs_len;
1671         const u8 *tlv_end;
1672         u16 slen;
1673         size_t buf_len;
1674         char *buf;
1675
1676         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
1677                     tlvs, tlvs_len);
1678         if (tlvs_len > 1500) {
1679                 /* TODO: better way for handling this */
1680                 wpa_msg_ctrl(wpa_s, MSG_INFO,
1681                              P2P_EVENT_SERV_DISC_RESP MACSTR
1682                              " %u <long response: %u bytes>",
1683                              MAC2STR(sa), update_indic,
1684                              (unsigned int) tlvs_len);
1685         } else {
1686                 buf_len = 2 * tlvs_len + 1;
1687                 buf = os_malloc(buf_len);
1688                 if (buf) {
1689                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1690                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1691                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
1692                                      MAC2STR(sa), update_indic, buf);
1693                         os_free(buf);
1694                 }
1695         }
1696
1697         while (pos < end) {
1698                 u8 srv_proto, srv_trans_id, status;
1699
1700                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
1701                 slen = WPA_GET_LE16(pos);
1702                 pos += 2;
1703                 if (pos + slen > end || slen < 3) {
1704                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
1705                                    "length");
1706                         return;
1707                 }
1708                 tlv_end = pos + slen;
1709
1710                 srv_proto = *pos++;
1711                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1712                            srv_proto);
1713                 srv_trans_id = *pos++;
1714                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1715                            srv_trans_id);
1716                 status = *pos++;
1717                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
1718                            status);
1719
1720                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
1721                             pos, tlv_end - pos);
1722
1723                 pos = tlv_end;
1724         }
1725
1726         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
1727 }
1728
1729
1730 void * wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
1731                            const struct wpabuf *tlvs)
1732 {
1733         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1734                 return (void *) wpa_drv_p2p_sd_request(wpa_s, dst, tlvs);
1735         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1736                 return NULL;
1737         return p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
1738 }
1739
1740
1741 void * wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
1742                                 u8 version, const char *query)
1743 {
1744         struct wpabuf *tlvs;
1745         void *ret;
1746
1747         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
1748         if (tlvs == NULL)
1749                 return NULL;
1750         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
1751         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
1752         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
1753         wpabuf_put_u8(tlvs, version);
1754         wpabuf_put_str(tlvs, query);
1755         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
1756         wpabuf_free(tlvs);
1757         return ret;
1758 }
1759
1760
1761 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, void *req)
1762 {
1763         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1764                 return wpa_drv_p2p_sd_cancel_request(wpa_s, (u64) req);
1765         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1766                 return -1;
1767         return p2p_sd_cancel_request(wpa_s->global->p2p, req);
1768 }
1769
1770
1771 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
1772                           const u8 *dst, u8 dialog_token,
1773                           const struct wpabuf *resp_tlvs)
1774 {
1775         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
1776                 wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token,
1777                                         resp_tlvs);
1778                 return;
1779         }
1780         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1781                 return;
1782         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
1783                         resp_tlvs);
1784 }
1785
1786
1787 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
1788 {
1789         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
1790                 wpa_drv_p2p_service_update(wpa_s);
1791                 return;
1792         }
1793         if (wpa_s->global->p2p)
1794                 p2p_sd_service_update(wpa_s->global->p2p);
1795 }
1796
1797
1798 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
1799 {
1800         dl_list_del(&bsrv->list);
1801         wpabuf_free(bsrv->query);
1802         wpabuf_free(bsrv->resp);
1803         os_free(bsrv);
1804 }
1805
1806
1807 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
1808 {
1809         dl_list_del(&usrv->list);
1810         os_free(usrv->service);
1811         os_free(usrv);
1812 }
1813
1814
1815 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
1816 {
1817         struct p2p_srv_bonjour *bsrv, *bn;
1818         struct p2p_srv_upnp *usrv, *un;
1819
1820         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
1821                               struct p2p_srv_bonjour, list)
1822                 wpas_p2p_srv_bonjour_free(bsrv);
1823
1824         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
1825                               struct p2p_srv_upnp, list)
1826                 wpas_p2p_srv_upnp_free(usrv);
1827
1828         wpas_p2p_sd_service_update(wpa_s);
1829 }
1830
1831
1832 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
1833                                  struct wpabuf *query, struct wpabuf *resp)
1834 {
1835         struct p2p_srv_bonjour *bsrv;
1836
1837         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
1838         if (bsrv) {
1839                 wpabuf_free(query);
1840                 wpabuf_free(bsrv->resp);
1841                 bsrv->resp = resp;
1842                 return 0;
1843         }
1844
1845         bsrv = os_zalloc(sizeof(*bsrv));
1846         if (bsrv == NULL)
1847                 return -1;
1848         bsrv->query = query;
1849         bsrv->resp = resp;
1850         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
1851
1852         wpas_p2p_sd_service_update(wpa_s);
1853         return 0;
1854 }
1855
1856
1857 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
1858                                  const struct wpabuf *query)
1859 {
1860         struct p2p_srv_bonjour *bsrv;
1861
1862         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
1863         if (bsrv == NULL)
1864                 return -1;
1865         wpas_p2p_srv_bonjour_free(bsrv);
1866         wpas_p2p_sd_service_update(wpa_s);
1867         return 0;
1868 }
1869
1870
1871 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
1872                               const char *service)
1873 {
1874         struct p2p_srv_upnp *usrv;
1875
1876         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
1877                 return 0; /* Already listed */
1878         usrv = os_zalloc(sizeof(*usrv));
1879         if (usrv == NULL)
1880                 return -1;
1881         usrv->version = version;
1882         usrv->service = os_strdup(service);
1883         if (usrv->service == NULL) {
1884                 os_free(usrv);
1885                 return -1;
1886         }
1887         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
1888
1889         wpas_p2p_sd_service_update(wpa_s);
1890         return 0;
1891 }
1892
1893
1894 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
1895                               const char *service)
1896 {
1897         struct p2p_srv_upnp *usrv;
1898
1899         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
1900         if (usrv == NULL)
1901                 return -1;
1902         wpas_p2p_srv_upnp_free(usrv);
1903         wpas_p2p_sd_service_update(wpa_s);
1904         return 0;
1905 }
1906
1907
1908 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
1909                                          const u8 *peer, const char *params,
1910                                          unsigned int generated_pin)
1911 {
1912         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s",
1913                 MAC2STR(peer), generated_pin, params);
1914 }
1915
1916
1917 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
1918                                         const u8 *peer, const char *params)
1919 {
1920         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s",
1921                 MAC2STR(peer), params);
1922 }
1923
1924
1925 void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
1926                         const u8 *dev_addr, const u8 *pri_dev_type,
1927                         const char *dev_name, u16 supp_config_methods,
1928                         u8 dev_capab, u8 group_capab)
1929 {
1930         struct wpa_supplicant *wpa_s = ctx;
1931         char devtype[WPS_DEV_TYPE_BUFSIZE];
1932         char params[200];
1933         u8 empty_dev_type[8];
1934         unsigned int generated_pin = 0;
1935
1936         if (pri_dev_type == NULL) {
1937                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
1938                 pri_dev_type = empty_dev_type;
1939         }
1940         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
1941                     " pri_dev_type=%s name='%s' config_methods=0x%x "
1942                     "dev_capab=0x%x group_capab=0x%x",
1943                     MAC2STR(dev_addr),
1944                     wps_dev_type_bin2str(pri_dev_type, devtype,
1945                                          sizeof(devtype)),
1946                     dev_name, supp_config_methods, dev_capab, group_capab);
1947         params[sizeof(params) - 1] = '\0';
1948
1949         if (config_methods & WPS_CONFIG_DISPLAY) {
1950                 generated_pin = wps_generate_pin();
1951                 wpas_prov_disc_local_display(wpa_s, peer, params,
1952                                              generated_pin);
1953         } else if (config_methods & WPS_CONFIG_KEYPAD)
1954                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
1955         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
1956                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR
1957                         "%s", MAC2STR(peer), params);
1958
1959         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
1960                                             P2P_PROV_DISC_SUCCESS,
1961                                             config_methods, generated_pin);
1962 }
1963
1964
1965 void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
1966 {
1967         struct wpa_supplicant *wpa_s = ctx;
1968         unsigned int generated_pin = 0;
1969
1970         if (config_methods & WPS_CONFIG_DISPLAY)
1971                 wpas_prov_disc_local_keypad(wpa_s, peer, "");
1972         else if (config_methods & WPS_CONFIG_KEYPAD) {
1973                 generated_pin = wps_generate_pin();
1974                 wpas_prov_disc_local_display(wpa_s, peer, "", generated_pin);
1975         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
1976                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR,
1977                         MAC2STR(peer));
1978
1979         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
1980                                             P2P_PROV_DISC_SUCCESS,
1981                                             config_methods, generated_pin);
1982
1983         if (wpa_s->pending_pd_before_join &&
1984             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1985              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
1986                 wpa_s->pending_pd_before_join = 0;
1987                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
1988                            "join-existing-group operation");
1989                 wpas_p2p_join_start(wpa_s);
1990         }
1991 }
1992
1993
1994 void wpas_prov_disc_fail(void *ctx, const u8 *peer,
1995                          enum p2p_prov_disc_status status)
1996 {
1997         struct wpa_supplicant *wpa_s = ctx;
1998
1999         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2000                                             status, 0, 0);
2001 }
2002
2003
2004 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2005                                   const u8 *go_dev_addr, const u8 *ssid,
2006                                   size_t ssid_len, int *go, u8 *group_bssid,
2007                                   int *force_freq, int persistent_group)
2008 {
2009         struct wpa_supplicant *wpa_s = ctx;
2010         struct wpa_ssid *s;
2011         u8 cur_bssid[ETH_ALEN];
2012         int res;
2013         struct wpa_supplicant *grp;
2014
2015         if (!persistent_group) {
2016                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2017                            " to join an active group", MAC2STR(sa));
2018                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2019                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2020                      == 0 ||
2021                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2022                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2023                                    "authorized invitation");
2024                         goto accept_inv;
2025                 }
2026                 /*
2027                  * Do not accept the invitation automatically; notify user and
2028                  * request approval.
2029                  */
2030                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2031         }
2032
2033         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2034         if (grp) {
2035                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2036                            "running persistent group");
2037                 if (*go)
2038                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2039                 goto accept_inv;
2040         }
2041
2042         if (!wpa_s->conf->persistent_reconnect)
2043                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2044
2045         for (s = wpa_s->conf->ssid; s; s = s->next) {
2046                 if (s->disabled == 2 &&
2047                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2048                     s->ssid_len == ssid_len &&
2049                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2050                         break;
2051         }
2052
2053         if (!s) {
2054                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2055                            " requested reinvocation of an unknown group",
2056                            MAC2STR(sa));
2057                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2058         }
2059
2060         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2061                 *go = 1;
2062                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2063                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2064                                    "interface is already in use - reject "
2065                                    "invitation");
2066                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2067                 }
2068                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2069         } else if (s->mode == WPAS_MODE_P2P_GO) {
2070                 *go = 1;
2071                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2072                 {
2073                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2074                                    "interface address for the group");
2075                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2076                 }
2077                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2078                           ETH_ALEN);
2079         }
2080
2081 accept_inv:
2082         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 &&
2083             wpa_s->assoc_freq) {
2084                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2085                            "the channel we are already using");
2086                 *force_freq = wpa_s->assoc_freq;
2087         }
2088
2089         res = wpa_drv_shared_freq(wpa_s);
2090         if (res > 0) {
2091                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2092                            "with the channel we are already using on a "
2093                            "shared interface");
2094                 *force_freq = res;
2095         }
2096
2097         return P2P_SC_SUCCESS;
2098 }
2099
2100
2101 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2102                                      const u8 *ssid, size_t ssid_len,
2103                                      const u8 *go_dev_addr, u8 status,
2104                                      int op_freq)
2105 {
2106         struct wpa_supplicant *wpa_s = ctx;
2107         struct wpa_ssid *s;
2108
2109         for (s = wpa_s->conf->ssid; s; s = s->next) {
2110                 if (s->disabled == 2 &&
2111                     s->ssid_len == ssid_len &&
2112                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2113                         break;
2114         }
2115
2116         if (status == P2P_SC_SUCCESS) {
2117                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2118                            " was accepted; op_freq=%d MHz",
2119                            MAC2STR(sa), op_freq);
2120                 if (s) {
2121                         wpas_p2p_group_add_persistent(
2122                                 wpa_s, s, s->mode == WPAS_MODE_P2P_GO, 0);
2123                 } else if (bssid) {
2124                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2125                                       wpa_s->p2p_wps_method);
2126                 }
2127                 return;
2128         }
2129
2130         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2131                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2132                            " was rejected (status %u)", MAC2STR(sa), status);
2133                 return;
2134         }
2135
2136         if (!s) {
2137                 if (bssid) {
2138                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2139                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2140                                 " bssid=" MACSTR " unknown-network",
2141                                 MAC2STR(sa), MAC2STR(go_dev_addr),
2142                                 MAC2STR(bssid));
2143                 } else {
2144                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2145                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2146                                 " unknown-network",
2147                                 MAC2STR(sa), MAC2STR(go_dev_addr));
2148                 }
2149                 return;
2150         }
2151
2152         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR
2153                 " persistent=%d", MAC2STR(sa), s->id);
2154 }
2155
2156
2157 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid)
2158 {
2159         struct wpa_supplicant *wpa_s = ctx;
2160         struct wpa_ssid *ssid;
2161
2162         if (bssid) {
2163                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2164                         "status=%d " MACSTR,
2165                         status, MAC2STR(bssid));
2166         } else {
2167                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2168                         "status=%d ", status);
2169         }
2170         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2171
2172         if (wpa_s->pending_invite_ssid_id == -1)
2173                 return; /* Invitation to active group */
2174
2175         if (status != P2P_SC_SUCCESS) {
2176                 wpas_p2p_remove_pending_group_interface(wpa_s);
2177                 return;
2178         }
2179
2180         ssid = wpa_config_get_network(wpa_s->conf,
2181                                       wpa_s->pending_invite_ssid_id);
2182         if (ssid == NULL) {
2183                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2184                            "data matching with invitation");
2185                 return;
2186         }
2187
2188         wpas_p2p_group_add_persistent(wpa_s, ssid,
2189                                       ssid->mode == WPAS_MODE_P2P_GO, 0);
2190 }
2191
2192
2193 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
2194                                      struct p2p_channels *chan)
2195 {
2196         int i, cla = 0;
2197
2198         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
2199                    "band");
2200
2201         /* Operating class 81 - 2.4 GHz band channels 1..13 */
2202         chan->reg_class[cla].reg_class = 81;
2203         chan->reg_class[cla].channels = 11;
2204         for (i = 0; i < 11; i++)
2205                 chan->reg_class[cla].channel[i] = i + 1;
2206         cla++;
2207
2208         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
2209                    "band");
2210
2211         /* Operating class 115 - 5 GHz, channels 36-48 */
2212         chan->reg_class[cla].reg_class = 115;
2213         chan->reg_class[cla].channels = 4;
2214         chan->reg_class[cla].channel[0] = 36;
2215         chan->reg_class[cla].channel[1] = 40;
2216         chan->reg_class[cla].channel[2] = 44;
2217         chan->reg_class[cla].channel[3] = 48;
2218         cla++;
2219
2220         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
2221                    "band");
2222
2223         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
2224         chan->reg_class[cla].reg_class = 124;
2225         chan->reg_class[cla].channels = 4;
2226         chan->reg_class[cla].channel[0] = 149;
2227         chan->reg_class[cla].channel[1] = 153;
2228         chan->reg_class[cla].channel[2] = 157;
2229         chan->reg_class[cla].channel[3] = 161;
2230         cla++;
2231
2232         chan->reg_classes = cla;
2233         return 0;
2234 }
2235
2236
2237 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
2238                                           u16 num_modes,
2239                                           enum hostapd_hw_mode mode)
2240 {
2241         u16 i;
2242
2243         for (i = 0; i < num_modes; i++) {
2244                 if (modes[i].mode == mode)
2245                         return &modes[i];
2246         }
2247
2248         return NULL;
2249 }
2250
2251
2252 static int has_channel(struct hostapd_hw_modes *mode, u8 chan, int *flags)
2253 {
2254         int i;
2255
2256         for (i = 0; i < mode->num_channels; i++) {
2257                 if (mode->channels[i].chan == chan) {
2258                         if (flags)
2259                                 *flags = mode->channels[i].flag;
2260                         return !(mode->channels[i].flag &
2261                                  (HOSTAPD_CHAN_DISABLED |
2262                                   HOSTAPD_CHAN_PASSIVE_SCAN |
2263                                   HOSTAPD_CHAN_NO_IBSS |
2264                                   HOSTAPD_CHAN_RADAR));
2265                 }
2266         }
2267
2268         return 0;
2269 }
2270
2271
2272 struct p2p_oper_class_map {
2273         enum hostapd_hw_mode mode;
2274         u8 op_class;
2275         u8 min_chan;
2276         u8 max_chan;
2277         u8 inc;
2278         enum { BW20, BW40PLUS, BW40MINUS } bw;
2279 };
2280
2281 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
2282                                    struct p2p_channels *chan)
2283 {
2284         struct hostapd_hw_modes *modes, *mode;
2285         u16 num_modes, flags;
2286         int cla, op;
2287         struct p2p_oper_class_map op_class[] = {
2288                 { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
2289                 { HOSTAPD_MODE_IEEE80211G, 82, 14, 14, 1, BW20 },
2290 #if 0 /* Do not enable HT40 on 2 GHz for now */
2291                 { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
2292                 { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
2293 #endif
2294                 { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
2295                 { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
2296                 { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
2297                 { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
2298                 { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
2299                 { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
2300                 { -1, 0, 0, 0, 0, BW20 }
2301         };
2302
2303         modes = wpa_drv_get_hw_feature_data(wpa_s, &num_modes, &flags);
2304         if (modes == NULL) {
2305                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
2306                            "of all supported channels; assume dualband "
2307                            "support");
2308                 return wpas_p2p_default_channels(wpa_s, chan);
2309         }
2310
2311         cla = 0;
2312
2313         for (op = 0; op_class[op].op_class; op++) {
2314                 struct p2p_oper_class_map *o = &op_class[op];
2315                 u8 ch;
2316                 struct p2p_reg_class *reg = NULL;
2317
2318                 mode = get_mode(modes, num_modes, o->mode);
2319                 if (mode == NULL)
2320                         continue;
2321                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2322                         int flag;
2323                         if (!has_channel(mode, ch, &flag))
2324                                 continue;
2325                         if (o->bw == BW40MINUS &&
2326                             (!(flag & HOSTAPD_CHAN_HT40MINUS) ||
2327                              !has_channel(mode, ch - 4, NULL)))
2328                                 continue;
2329                         if (o->bw == BW40PLUS &&
2330                             (!(flag & HOSTAPD_CHAN_HT40PLUS) ||
2331                              !has_channel(mode, ch + 4, NULL)))
2332                                 continue;
2333                         if (reg == NULL) {
2334                                 wpa_printf(MSG_DEBUG, "P2P: Add operating "
2335                                            "class %u", o->op_class);
2336                                 reg = &chan->reg_class[cla];
2337                                 cla++;
2338                                 reg->reg_class = o->op_class;
2339                         }
2340                         reg->channel[reg->channels] = ch;
2341                         reg->channels++;
2342                 }
2343                 if (reg) {
2344                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
2345                                     reg->channel, reg->channels);
2346                 }
2347         }
2348
2349         chan->reg_classes = cla;
2350
2351         ieee80211_sta_free_hw_features(modes, num_modes);
2352
2353         return 0;
2354 }
2355
2356
2357 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
2358                         size_t buf_len)
2359 {
2360         struct wpa_supplicant *wpa_s = ctx;
2361
2362         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2363                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
2364                         break;
2365         }
2366         if (wpa_s == NULL)
2367                 return -1;
2368
2369         return wpa_drv_get_noa(wpa_s, buf, buf_len);
2370 }
2371
2372
2373 /**
2374  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
2375  * @global: Pointer to global data from wpa_supplicant_init()
2376  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2377  * Returns: 0 on success, -1 on failure
2378  */
2379 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
2380 {
2381         struct p2p_config p2p;
2382         unsigned int r;
2383         int i;
2384 #ifdef ANDROID_BRCM_P2P_PATCH
2385         char buf[200];
2386 #endif
2387
2388         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
2389                 return 0;
2390
2391 #ifdef CONFIG_CLIENT_MLME
2392         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)) {
2393                 wpa_s->mlme.public_action_cb = p2p_rx_action_mlme;
2394                 wpa_s->mlme.public_action_cb_ctx = wpa_s;
2395         }
2396 #endif /* CONFIG_CLIENT_MLME */
2397
2398         if (wpa_drv_disable_11b_rates(wpa_s, 1) < 0) {
2399                 wpa_printf(MSG_DEBUG, "P2P: Failed to disable 11b rates");
2400                 /* Continue anyway; this is not really a fatal error */
2401         }
2402
2403         if (global->p2p)
2404                 return 0;
2405
2406         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2407                 struct p2p_params params;
2408
2409                 wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management");
2410                 os_memset(&params, 0, sizeof(params));
2411                 params.dev_name = wpa_s->conf->device_name;
2412                 os_memcpy(params.pri_dev_type, wpa_s->conf->device_type,
2413                           WPS_DEV_TYPE_LEN);
2414                 params.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2415                 os_memcpy(params.sec_dev_type,
2416                           wpa_s->conf->sec_device_type,
2417                           params.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2418
2419                 if (wpa_drv_p2p_set_params(wpa_s, &params) < 0)
2420                         return -1;
2421
2422                 return 0;
2423         }
2424
2425         os_memset(&p2p, 0, sizeof(p2p));
2426         p2p.msg_ctx = wpa_s;
2427         p2p.cb_ctx = wpa_s;
2428         p2p.p2p_scan = wpas_p2p_scan;
2429         p2p.send_action = wpas_send_action;
2430         p2p.send_action_done = wpas_send_action_done;
2431         p2p.go_neg_completed = wpas_go_neg_completed;
2432         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
2433         p2p.dev_found = wpas_dev_found;
2434         p2p.dev_lost = wpas_dev_lost;
2435         p2p.start_listen = wpas_start_listen;
2436         p2p.stop_listen = wpas_stop_listen;
2437         p2p.send_probe_resp = wpas_send_probe_resp;
2438         p2p.sd_request = wpas_sd_request;
2439         p2p.sd_response = wpas_sd_response;
2440         p2p.prov_disc_req = wpas_prov_disc_req;
2441         p2p.prov_disc_resp = wpas_prov_disc_resp;
2442         p2p.prov_disc_fail = wpas_prov_disc_fail;
2443         p2p.invitation_process = wpas_invitation_process;
2444         p2p.invitation_received = wpas_invitation_received;
2445         p2p.invitation_result = wpas_invitation_result;
2446         p2p.get_noa = wpas_get_noa;
2447
2448 #ifdef ANDROID_BRCM_P2P_PATCH
2449         /* P2P_ADDR: Using p2p_dev_addr to hold the actual p2p device address incase if
2450          * we are not using the primary interface for p2p operations.
2451          */
2452         wpa_drv_driver_cmd(wpa_s,  "P2P_DEV_ADDR", buf, sizeof(buf));
2453         os_memcpy(p2p.p2p_dev_addr, buf, ETH_ALEN);
2454         os_memcpy(wpa_s->global->p2p_dev_addr, buf, ETH_ALEN);
2455         os_memcpy(p2p.dev_addr, buf, ETH_ALEN);
2456         wpa_printf(MSG_DEBUG, "P2P: Device address ("MACSTR")", MAC2STR(p2p.p2p_dev_addr));
2457 #else
2458         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
2459 #endif
2460
2461         os_memcpy(p2p.dev_addr, wpa_s->own_addr, ETH_ALEN);
2462         p2p.dev_name = wpa_s->conf->device_name;
2463         p2p.manufacturer = wpa_s->conf->manufacturer;
2464         p2p.model_name = wpa_s->conf->model_name;
2465         p2p.model_number = wpa_s->conf->model_number;
2466         p2p.serial_number = wpa_s->conf->serial_number;
2467         if (wpa_s->wps) {
2468                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
2469                 p2p.config_methods = wpa_s->wps->config_methods;
2470         }
2471
2472         if (wpa_s->conf->p2p_listen_reg_class &&
2473             wpa_s->conf->p2p_listen_channel) {
2474                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
2475                 p2p.channel = wpa_s->conf->p2p_listen_channel;
2476         } else {
2477                 p2p.reg_class = 81;
2478                 /*
2479                  * Pick one of the social channels randomly as the listen
2480                  * channel.
2481                  */
2482                 os_get_random((u8 *) &r, sizeof(r));
2483                 p2p.channel = 1 + (r % 3) * 5;
2484         }
2485         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
2486
2487         if (wpa_s->conf->p2p_oper_reg_class &&
2488             wpa_s->conf->p2p_oper_channel) {
2489                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
2490                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
2491                 p2p.cfg_op_channel = 1;
2492                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
2493                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2494
2495         } else {
2496                 p2p.op_reg_class = 81;
2497                 /*
2498                  * Use random operation channel from (1, 6, 11) if no other
2499                  * preference is indicated.
2500                  */
2501                 os_get_random((u8 *) &r, sizeof(r));
2502                 p2p.op_channel = 1 + (r % 3) * 5;
2503                 p2p.cfg_op_channel = 0;
2504                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
2505                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2506         }
2507         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
2508                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
2509                 p2p.country[2] = 0x04;
2510         } else
2511                 os_memcpy(p2p.country, "XX\x04", 3);
2512
2513         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) {
2514                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
2515                            "channel list");
2516                 return -1;
2517         }
2518
2519         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
2520                   WPS_DEV_TYPE_LEN);
2521
2522         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2523         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
2524                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2525
2526         p2p.concurrent_operations = !!(wpa_s->drv_flags &
2527                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
2528
2529         p2p.max_peers = 100;
2530
2531         if (wpa_s->conf->p2p_ssid_postfix) {
2532                 p2p.ssid_postfix_len =
2533                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
2534                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
2535                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
2536                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
2537                           p2p.ssid_postfix_len);
2538         }
2539
2540         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
2541
2542         global->p2p = p2p_init(&p2p);
2543         if (global->p2p == NULL)
2544                 return -1;
2545
2546         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
2547                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
2548                         continue;
2549                 p2p_add_wps_vendor_extension(
2550                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
2551         }
2552
2553         return 0;
2554 }
2555
2556
2557 /**
2558  * wpas_p2p_deinit - Deinitialize per-interface P2P data
2559  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2560  *
2561  * This function deinitialize per-interface P2P data.
2562  */
2563 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
2564 {
2565         if (wpa_s->driver && wpa_s->drv_priv)
2566                 wpa_drv_probe_req_report(wpa_s, 0);
2567         os_free(wpa_s->go_params);
2568         wpa_s->go_params = NULL;
2569         wpabuf_free(wpa_s->pending_action_tx);
2570         wpa_s->pending_action_tx = NULL;
2571         eloop_cancel_timeout(wpas_send_action_cb, wpa_s, NULL);
2572         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2573         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2574         wpa_s->p2p_long_listen = 0;
2575         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2576         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
2577         wpas_p2p_remove_pending_group_interface(wpa_s);
2578
2579         /* TODO: remove group interface from the driver if this wpa_s instance
2580          * is on top of a P2P group interface */
2581 }
2582
2583
2584 /**
2585  * wpas_p2p_deinit_global - Deinitialize global P2P module
2586  * @global: Pointer to global data from wpa_supplicant_init()
2587  *
2588  * This function deinitializes the global (per device) P2P module.
2589  */
2590 void wpas_p2p_deinit_global(struct wpa_global *global)
2591 {
2592         struct wpa_supplicant *wpa_s, *tmp;
2593         char *ifname;
2594
2595         if (global->p2p == NULL)
2596                 return;
2597
2598         /* Remove remaining P2P group interfaces */
2599         wpa_s = global->ifaces;
2600         if (wpa_s)
2601                 wpas_p2p_service_flush(wpa_s);
2602         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
2603                 wpa_s = wpa_s->next;
2604         while (wpa_s) {
2605                 enum wpa_driver_if_type type;
2606                 tmp = global->ifaces;
2607                 while (tmp &&
2608                        (tmp == wpa_s ||
2609                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
2610                         tmp = tmp->next;
2611                 }
2612                 if (tmp == NULL)
2613                         break;
2614                 ifname = os_strdup(tmp->ifname);
2615                 type = wpas_p2p_if_type(tmp->p2p_group_interface);
2616                 wpa_supplicant_remove_iface(global, tmp, 0);
2617                 if (ifname)
2618                         wpa_drv_if_remove(wpa_s, type, ifname);
2619                 os_free(ifname);
2620         }
2621
2622         /*
2623          * Deinit GO data on any possibly remaining interface (if main
2624          * interface is used as GO).
2625          */
2626         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2627                 if (wpa_s->ap_iface)
2628                         wpas_p2p_group_deinit(wpa_s);
2629         }
2630
2631         p2p_deinit(global->p2p);
2632         global->p2p = NULL;
2633 }
2634
2635
2636 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
2637 {
2638         if (wpa_s->drv_flags &
2639             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
2640              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
2641                 return 1; /* P2P group requires a new interface in every case
2642                            */
2643         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
2644                 return 0; /* driver does not support concurrent operations */
2645         if (wpa_s->global->ifaces->next)
2646                 return 1; /* more that one interface already in use */
2647         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2648                 return 1; /* this interface is already in use */
2649         return 0;
2650 }
2651
2652
2653 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
2654                                  const u8 *peer_addr,
2655                                  enum p2p_wps_method wps_method,
2656                                  int go_intent, const u8 *own_interface_addr,
2657                                  unsigned int force_freq, int persistent_group)
2658 {
2659         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2660                 return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method,
2661                                            go_intent, own_interface_addr,
2662                                            force_freq, persistent_group);
2663         }
2664
2665         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
2666                            go_intent, own_interface_addr, force_freq,
2667                            persistent_group);
2668 }
2669
2670
2671 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
2672                                 const u8 *peer_addr,
2673                                 enum p2p_wps_method wps_method,
2674                                 int go_intent, const u8 *own_interface_addr,
2675                                 unsigned int force_freq, int persistent_group)
2676 {
2677         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
2678                 return -1;
2679
2680         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
2681                              go_intent, own_interface_addr, force_freq,
2682                              persistent_group);
2683 }
2684
2685
2686 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
2687 {
2688         wpa_s->p2p_join_scan_count++;
2689         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
2690                    wpa_s->p2p_join_scan_count);
2691         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
2692                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
2693                            " for join operationg - stop join attempt",
2694                            MAC2STR(wpa_s->pending_join_iface_addr));
2695                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2696                 wpa_msg(wpa_s->parent, MSG_INFO,
2697                         P2P_EVENT_GROUP_FORMATION_FAILURE);
2698         }
2699 }
2700
2701
2702 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
2703                                    struct wpa_scan_results *scan_res)
2704 {
2705         struct wpa_bss *bss;
2706         int freq;
2707         u8 iface_addr[ETH_ALEN];
2708
2709         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2710
2711         if (wpa_s->global->p2p_disabled)
2712                 return;
2713
2714         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for join",
2715                    scan_res ? (int) scan_res->num : -1);
2716
2717         if (scan_res)
2718                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
2719
2720         freq = p2p_get_oper_freq(wpa_s->global->p2p,
2721                                  wpa_s->pending_join_iface_addr);
2722         if (freq < 0 &&
2723             p2p_get_interface_addr(wpa_s->global->p2p,
2724                                    wpa_s->pending_join_dev_addr,
2725                                    iface_addr) == 0 &&
2726             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
2727         {
2728                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
2729                            "address for join from " MACSTR " to " MACSTR
2730                            " based on newly discovered P2P peer entry",
2731                            MAC2STR(wpa_s->pending_join_iface_addr),
2732                            MAC2STR(iface_addr));
2733                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
2734                           ETH_ALEN);
2735
2736                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
2737                                          wpa_s->pending_join_iface_addr);
2738         }
2739         if (freq >= 0) {
2740                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
2741                            "from P2P peer table: %d MHz", freq);
2742         }
2743         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
2744         if (bss) {
2745                 freq = bss->freq;
2746                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
2747                            "from BSS table: %d MHz", freq);
2748         }
2749         if (freq > 0) {
2750                 u16 method;
2751
2752                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
2753                            "prior to joining an existing group (GO " MACSTR
2754                            " freq=%u MHz)",
2755                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
2756                 wpa_s->pending_pd_before_join = 1;
2757
2758                 switch (wpa_s->pending_join_wps_method) {
2759                 case WPS_PIN_LABEL:
2760                 case WPS_PIN_DISPLAY:
2761                         method = WPS_CONFIG_KEYPAD;
2762                         break;
2763                 case WPS_PIN_KEYPAD:
2764                         method = WPS_CONFIG_DISPLAY;
2765                         break;
2766                 case WPS_PBC:
2767                         method = WPS_CONFIG_PUSHBUTTON;
2768                         break;
2769                 default:
2770                         method = 0;
2771                         break;
2772                 }
2773
2774                 if (p2p_prov_disc_req(wpa_s->global->p2p,
2775                                       wpa_s->pending_join_dev_addr, method, 1)
2776                     < 0) {
2777                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
2778                                    "Discovery Request before joining an "
2779                                    "existing group");
2780                         wpa_s->pending_pd_before_join = 0;
2781                         goto start;
2782                 }
2783
2784                 /*
2785                  * Actual join operation will be started from the Action frame
2786                  * TX status callback.
2787                  */
2788                 return;
2789         }
2790
2791         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
2792         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2793         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
2794         wpas_p2p_check_join_scan_limit(wpa_s);
2795         return;
2796
2797 start:
2798         /* Start join operation immediately */
2799         wpas_p2p_join_start(wpa_s);
2800 }
2801
2802
2803 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
2804 {
2805         struct wpa_supplicant *wpa_s = eloop_ctx;
2806         int ret;
2807         struct wpa_driver_scan_params params;
2808         struct wpabuf *wps_ie, *ies;
2809
2810         os_memset(&params, 0, sizeof(params));
2811
2812         /* P2P Wildcard SSID */
2813         params.num_ssids = 1;
2814         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
2815         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
2816
2817         wpa_s->wps->dev.p2p = 1;
2818         wps_ie = wps_build_probe_req_ie(0, &wpa_s->wps->dev, wpa_s->wps->uuid,
2819                                         WPS_REQ_ENROLLEE, 0, NULL);
2820         if (wps_ie == NULL) {
2821                 wpas_p2p_scan_res_join(wpa_s, NULL);
2822                 return;
2823         }
2824
2825         ies = wpabuf_alloc(wpabuf_len(wps_ie) + 100);
2826         if (ies == NULL) {
2827                 wpabuf_free(wps_ie);
2828                 wpas_p2p_scan_res_join(wpa_s, NULL);
2829                 return;
2830         }
2831         wpabuf_put_buf(ies, wps_ie);
2832         wpabuf_free(wps_ie);
2833
2834         p2p_scan_ie(wpa_s->global->p2p, ies);
2835
2836         params.extra_ies = wpabuf_head(ies);
2837         params.extra_ies_len = wpabuf_len(ies);
2838
2839         /*
2840          * Run a scan to update BSS table and start Provision Discovery once
2841          * the new scan results become available.
2842          */
2843         wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
2844         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
2845                 ret = ieee80211_sta_req_scan(wpa_s, &params);
2846         else
2847                 ret = wpa_drv_scan(wpa_s, &params);
2848
2849         wpabuf_free(ies);
2850
2851         if (ret) {
2852                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
2853                            "try again later");
2854                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2855                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
2856                 wpas_p2p_check_join_scan_limit(wpa_s);
2857         }
2858 }
2859
2860
2861 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
2862                          const u8 *dev_addr, enum p2p_wps_method wps_method)
2863 {
2864         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
2865                    MACSTR " dev " MACSTR ")",
2866                    MAC2STR(iface_addr), MAC2STR(dev_addr));
2867
2868         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
2869         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
2870         wpa_s->pending_join_wps_method = wps_method;
2871
2872         /* Make sure we are not running find during connection establishment */
2873         wpas_p2p_stop_find(wpa_s);
2874
2875         wpa_s->p2p_join_scan_count = 0;
2876         wpas_p2p_join_scan(wpa_s, NULL);
2877         return 0;
2878 }
2879
2880
2881 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
2882 {
2883         struct wpa_supplicant *group;
2884         struct p2p_go_neg_results res;
2885
2886         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
2887         if (group == NULL)
2888                 return -1;
2889         if (group != wpa_s) {
2890                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
2891                           sizeof(group->p2p_pin));
2892                 group->p2p_wps_method = wpa_s->p2p_wps_method;
2893         }
2894
2895         group->p2p_in_provisioning = 1;
2896
2897         os_memset(&res, 0, sizeof(res));
2898         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
2899                   ETH_ALEN);
2900         res.wps_method = wpa_s->pending_join_wps_method;
2901         wpas_start_wps_enrollee(group, &res);
2902
2903         /*
2904          * Allow a longer timeout for join-a-running-group than normal 15
2905          * second group formation timeout since the GO may not have authorized
2906          * our connection yet.
2907          */
2908         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2909         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
2910                                wpa_s, NULL);
2911
2912         return 0;
2913 }
2914
2915
2916 /**
2917  * wpas_p2p_connect - Request P2P Group Formation to be started
2918  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2919  * @peer_addr: Address of the peer P2P Device
2920  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
2921  * @persistent_group: Whether to create a persistent group
2922  * @join: Whether to join an existing group (as a client) instead of starting
2923  *      Group Owner negotiation; @peer_addr is BSSID in that case
2924  * @auth: Whether to only authorize the connection instead of doing that and
2925  *      initiating Group Owner negotiation
2926  * @go_intent: GO Intent or -1 to use default
2927  * @freq: Frequency for the group or 0 for auto-selection
2928  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
2929  *      failure, -2 on failure due to channel not currently available,
2930  *      -3 if forced channel is not supported
2931  */
2932 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
2933                      const char *pin, enum p2p_wps_method wps_method,
2934                      int persistent_group, int join, int auth, int go_intent,
2935                      int freq)
2936 {
2937         int force_freq = 0, oper_freq = 0;
2938         u8 bssid[ETH_ALEN];
2939         int ret = 0;
2940         enum wpa_driver_if_type iftype;
2941
2942         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2943                 return -1;
2944
2945         if (go_intent < 0)
2946                 go_intent = wpa_s->conf->p2p_go_intent;
2947
2948         if (!auth)
2949                 wpa_s->p2p_long_listen = 0;
2950
2951         wpa_s->p2p_wps_method = wps_method;
2952
2953         if (pin)
2954                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
2955         else if (wps_method == WPS_PIN_DISPLAY) {
2956                 ret = wps_generate_pin();
2957                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
2958                             ret);
2959                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
2960                            wpa_s->p2p_pin);
2961         } else
2962                 wpa_s->p2p_pin[0] = '\0';
2963
2964         if (join) {
2965                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
2966                 if (auth) {
2967                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
2968                                    "connect a running group from " MACSTR,
2969                                    MAC2STR(peer_addr));
2970                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
2971                         return ret;
2972                 }
2973                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
2974                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
2975                                            iface_addr) < 0) {
2976                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
2977                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
2978                                          dev_addr);
2979                 }
2980                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method) <
2981                     0)
2982                         return -1;
2983                 return ret;
2984         }
2985
2986         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
2987             wpa_s->assoc_freq)
2988                 oper_freq = wpa_s->assoc_freq;
2989         else {
2990                 oper_freq = wpa_drv_shared_freq(wpa_s);
2991                 if (oper_freq < 0)
2992                         oper_freq = 0;
2993         }
2994
2995         if (freq > 0) {
2996                 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
2997                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
2998                                    "(%u MHz) is not supported for P2P uses",
2999                                    freq);
3000                         return -3;
3001                 }
3002
3003                 if (oper_freq > 0 && freq != oper_freq &&
3004                     !(wpa_s->drv_flags &
3005                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3006                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3007                                    "on %u MHz while connected on another "
3008                                    "channel (%u MHz)", freq, oper_freq);
3009                         return -2;
3010                 }
3011                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3012                            "requested channel (%u MHz)", freq);
3013                 force_freq = freq;
3014         } else if (oper_freq > 0 &&
3015                    !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) {
3016                 if (!(wpa_s->drv_flags &
3017                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3018                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3019                                    "while connected on non-P2P supported "
3020                                    "channel (%u MHz)", oper_freq);
3021                         return -2;
3022                 }
3023                 wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
3024                            "(%u MHz) not available for P2P - try to use "
3025                            "another channel", oper_freq);
3026                 force_freq = 0;
3027         } else if (oper_freq > 0) {
3028                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3029                            "channel we are already using (%u MHz) on another "
3030                            "interface", oper_freq);
3031                 force_freq = oper_freq;
3032         }
3033
3034         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
3035
3036         if (!wpa_s->create_p2p_iface) {
3037                 if (auth) {
3038                         if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
3039                                                  go_intent, wpa_s->own_addr,
3040                                                  force_freq, persistent_group)
3041                             < 0)
3042                                 return -1;
3043                         return ret;
3044                 }
3045                 if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
3046                                           go_intent, wpa_s->own_addr,
3047                                           force_freq, persistent_group) < 0)
3048                         return -1;
3049                 return ret;
3050         }
3051
3052         /* Prepare to add a new interface for the group */
3053         iftype = WPA_IF_P2P_GROUP;
3054         if (join)
3055                 iftype = WPA_IF_P2P_CLIENT;
3056         else if (go_intent == 15)
3057                 iftype = WPA_IF_P2P_GO;
3058         if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
3059                 wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3060                            "interface for the group");
3061                 return -1;
3062         }
3063
3064         if (auth) {
3065                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
3066                                          go_intent,
3067                                          wpa_s->pending_interface_addr,
3068                                          force_freq, persistent_group) < 0)
3069                         return -1;
3070                 return ret;
3071         }
3072         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method, go_intent,
3073                                   wpa_s->pending_interface_addr,
3074                                   force_freq, persistent_group) < 0) {
3075                 wpas_p2p_remove_pending_group_interface(wpa_s);
3076                 return -1;
3077         }
3078         return ret;
3079 }
3080
3081
3082 /**
3083  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
3084  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3085  * @freq: Frequency of the channel in MHz
3086  * @duration: Duration of the stay on the channel in milliseconds
3087  *
3088  * This callback is called when the driver indicates that it has started the
3089  * requested remain-on-channel duration.
3090  */
3091 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3092                                    unsigned int freq, unsigned int duration)
3093 {
3094         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3095                 return;
3096         wpa_s->roc_waiting_drv_freq = 0;
3097         wpa_s->off_channel_freq = freq;
3098         wpas_send_action_cb(wpa_s, NULL);
3099         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
3100                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
3101                               wpa_s->pending_listen_duration);
3102                 wpa_s->pending_listen_freq = 0;
3103         }
3104 }
3105
3106
3107 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
3108                                  unsigned int timeout)
3109 {
3110         /* Limit maximum Listen state time based on driver limitation. */
3111         if (timeout > wpa_s->max_remain_on_chan)
3112                 timeout = wpa_s->max_remain_on_chan;
3113
3114         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3115                 return wpa_drv_p2p_listen(wpa_s, timeout);
3116
3117         return p2p_listen(wpa_s->global->p2p, timeout);
3118 }
3119
3120
3121 /**
3122  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
3123  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3124  * @freq: Frequency of the channel in MHz
3125  *
3126  * This callback is called when the driver indicates that a remain-on-channel
3127  * operation has been completed, i.e., the duration on the requested channel
3128  * has timed out.
3129  */
3130 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3131                                           unsigned int freq)
3132 {
3133         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
3134                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
3135                    wpa_s->p2p_long_listen, wpa_s->pending_action_tx);
3136         wpa_s->off_channel_freq = 0;
3137         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3138                 return;
3139         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
3140                 return; /* P2P module started a new operation */
3141         if (wpa_s->pending_action_tx)
3142                 return;
3143         if (wpa_s->p2p_long_listen > 0)
3144                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
3145         if (wpa_s->p2p_long_listen > 0) {
3146                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
3147                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
3148         }
3149 }
3150
3151
3152 /**
3153  * wpas_p2p_group_remove - Remove a P2P group
3154  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3155  * @ifname: Network interface name of the group interface or "*" to remove all
3156  *      groups
3157  * Returns: 0 on success, -1 on failure
3158  *
3159  * This function is used to remove a P2P group. This can be used to disconnect
3160  * from a group in which the local end is a P2P Client or to end a P2P Group in
3161  * case the local end is the Group Owner. If a virtual network interface was
3162  * created for this group, that interface will be removed. Otherwise, only the
3163  * configured P2P group network will be removed from the interface.
3164  */
3165 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
3166 {
3167         struct wpa_global *global = wpa_s->global;
3168
3169         if (os_strcmp(ifname, "*") == 0) {
3170                 struct wpa_supplicant *prev;
3171                 wpa_s = global->ifaces;
3172                 while (wpa_s) {
3173                         prev = wpa_s;
3174                         wpa_s = wpa_s->next;
3175                         wpas_p2p_disconnect(prev);
3176                 }
3177                 return 0;
3178         }
3179
3180         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3181                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
3182                         break;
3183         }
3184
3185         return wpas_p2p_disconnect(wpa_s);
3186 }
3187
3188
3189 static void wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
3190                                     struct p2p_go_neg_results *params,
3191                                     int freq)
3192 {
3193         u8 bssid[ETH_ALEN];
3194         int res;
3195
3196         os_memset(params, 0, sizeof(*params));
3197         params->role_go = 1;
3198         if (freq) {
3199                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
3200                            "frequency %d MHz", freq);
3201                 params->freq = freq;
3202         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
3203                    wpa_s->conf->p2p_oper_channel >= 1 &&
3204                    wpa_s->conf->p2p_oper_channel <= 11) {
3205                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
3206                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3207                            "frequency %d MHz", params->freq);
3208         } else if (wpa_s->conf->p2p_oper_reg_class == 115 ||
3209                    wpa_s->conf->p2p_oper_reg_class == 124) {
3210                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
3211                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3212                            "frequency %d MHz", params->freq);
3213         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3214                    wpa_s->best_overall_freq > 0 &&
3215                    p2p_supported_freq(wpa_s->global->p2p,
3216                                       wpa_s->best_overall_freq)) {
3217                 params->freq = wpa_s->best_overall_freq;
3218                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
3219                            "channel %d MHz", params->freq);
3220         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3221                    wpa_s->best_24_freq > 0 &&
3222                    p2p_supported_freq(wpa_s->global->p2p,
3223                                       wpa_s->best_24_freq)) {
3224                 params->freq = wpa_s->best_24_freq;
3225                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
3226                            "channel %d MHz", params->freq);
3227         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3228                    wpa_s->best_5_freq > 0 &&
3229                    p2p_supported_freq(wpa_s->global->p2p,
3230                                       wpa_s->best_5_freq)) {
3231                 params->freq = wpa_s->best_5_freq;
3232                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
3233                            "channel %d MHz", params->freq);
3234         } else {
3235                 params->freq = 2412;
3236                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
3237                            "known)", params->freq);
3238         }
3239
3240         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3241             wpa_s->assoc_freq && !freq) {
3242                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3243                            "already using");
3244                 params->freq = wpa_s->assoc_freq;
3245         }
3246
3247         res = wpa_drv_shared_freq(wpa_s);
3248         if (res > 0 && !freq) {
3249                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3250                            "already using on a shared interface");
3251                 params->freq = res;
3252         }
3253 }
3254
3255
3256 static struct wpa_supplicant *
3257 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
3258                          int go)
3259 {
3260         struct wpa_supplicant *group_wpa_s;
3261
3262         if (!wpas_p2p_create_iface(wpa_s))
3263                 return wpa_s;
3264
3265         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
3266                                          WPA_IF_P2P_CLIENT) < 0)
3267                 return NULL;
3268         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
3269         if (group_wpa_s == NULL) {
3270                 wpas_p2p_remove_pending_group_interface(wpa_s);
3271                 return NULL;
3272         }
3273
3274         return group_wpa_s;
3275 }
3276
3277
3278 /**
3279  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
3280  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3281  * @persistent_group: Whether to create a persistent group
3282  * @freq: Frequency for the group or 0 to indicate no hardcoding
3283  * Returns: 0 on success, -1 on failure
3284  *
3285  * This function creates a new P2P group with the local end as the Group Owner,
3286  * i.e., without using Group Owner Negotiation.
3287  */
3288 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
3289                        int freq)
3290 {
3291         struct p2p_go_neg_results params;
3292         unsigned int r;
3293
3294         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3295                 return -1;
3296
3297 #ifdef ANDROID_BRCM_P2P_PATCH
3298         /* Make sure we are not running find during connection establishment */
3299         wpa_printf(MSG_DEBUG, "P2P: Stopping P2P FIND, if any");
3300         wpas_p2p_stop_find(wpa_s);
3301 #endif
3302
3303         if (freq == 2) {
3304                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
3305                            "band");
3306                 if (wpa_s->best_24_freq > 0 &&
3307                     p2p_supported_freq(wpa_s->global->p2p,
3308                                        wpa_s->best_24_freq)) {
3309                         freq = wpa_s->best_24_freq;
3310                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
3311                                    "channel: %d MHz", freq);
3312                 } else {
3313                         os_get_random((u8 *) &r, sizeof(r));
3314                         freq = 2412 + (r % 3) * 25;
3315                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
3316                                    "channel: %d MHz", freq);
3317                 }
3318         }
3319
3320         if (freq == 5) {
3321                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
3322                            "band");
3323                 if (wpa_s->best_5_freq > 0 &&
3324                     p2p_supported_freq(wpa_s->global->p2p,
3325                                        wpa_s->best_5_freq)) {
3326                         freq = wpa_s->best_5_freq;
3327                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
3328                                    "channel: %d MHz", freq);
3329                 } else {
3330                         os_get_random((u8 *) &r, sizeof(r));
3331                         freq = 5180 + (r % 4) * 20;
3332                         if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3333                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
3334                                            "5 GHz channel for P2P group");
3335                                 return -1;
3336                         }
3337                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
3338                                    "channel: %d MHz", freq);
3339                 }
3340         }
3341
3342         if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) {
3343                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
3344                            "(%u MHz) is not supported for P2P uses",
3345                            freq);
3346                 return -1;
3347         }
3348
3349         wpas_p2p_init_go_params(wpa_s, &params, freq);
3350         p2p_go_params(wpa_s->global->p2p, &params);
3351         params.persistent_group = persistent_group;
3352
3353         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
3354         if (wpa_s == NULL)
3355                 return -1;
3356         wpas_start_wps_go(wpa_s, &params, 0);
3357
3358         return 0;
3359 }
3360
3361
3362 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
3363                                  struct wpa_ssid *params, int addr_allocated)
3364 {
3365         struct wpa_ssid *ssid;
3366
3367         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
3368         if (wpa_s == NULL)
3369                 return -1;
3370
3371         wpa_supplicant_ap_deinit(wpa_s);
3372
3373         ssid = wpa_config_add_network(wpa_s->conf);
3374         if (ssid == NULL)
3375                 return -1;
3376         wpa_config_set_network_defaults(ssid);
3377         ssid->temporary = 1;
3378         ssid->proto = WPA_PROTO_RSN;
3379         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
3380         ssid->group_cipher = WPA_CIPHER_CCMP;
3381         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
3382         ssid->ssid = os_malloc(params->ssid_len);
3383         if (ssid->ssid == NULL) {
3384                 wpa_config_remove_network(wpa_s->conf, ssid->id);
3385                 return -1;
3386         }
3387         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
3388         ssid->ssid_len = params->ssid_len;
3389         ssid->p2p_group = 1;
3390         ssid->export_keys = 1;
3391         if (params->psk_set) {
3392                 os_memcpy(ssid->psk, params->psk, 32);
3393                 ssid->psk_set = 1;
3394         }
3395         if (params->passphrase)
3396                 ssid->passphrase = os_strdup(params->passphrase);
3397
3398         wpa_supplicant_select_network(wpa_s, ssid);
3399
3400         wpa_s->show_group_started = 1;
3401
3402         return 0;
3403 }
3404
3405
3406 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
3407                                   struct wpa_ssid *ssid, int addr_allocated,
3408                                   int freq)
3409 {
3410         struct p2p_go_neg_results params;
3411         int go = 0;
3412
3413         if (ssid->disabled != 2 || ssid->ssid == NULL)
3414                 return -1;
3415
3416         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
3417             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
3418                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
3419                            "already running");
3420                 return 0;
3421         }
3422
3423         /* Make sure we are not running find during connection establishment */
3424         wpas_p2p_stop_find(wpa_s);
3425
3426         if (ssid->mode == WPAS_MODE_INFRA)
3427                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
3428
3429         if (ssid->mode != WPAS_MODE_P2P_GO)
3430                 return -1;
3431
3432         wpas_p2p_init_go_params(wpa_s, &params, freq);
3433
3434         params.role_go = 1;
3435         if (ssid->passphrase == NULL ||
3436             os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
3437                 wpa_printf(MSG_DEBUG, "P2P: Invalid passphrase in persistent "
3438                            "group");
3439                 return -1;
3440         }
3441         os_strlcpy(params.passphrase, ssid->passphrase,
3442                    sizeof(params.passphrase));
3443         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
3444         params.ssid_len = ssid->ssid_len;
3445         params.persistent_group = 1;
3446
3447         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
3448         if (wpa_s == NULL)
3449                 return -1;
3450
3451         wpas_start_wps_go(wpa_s, &params, 0);
3452
3453         return 0;
3454 }
3455
3456
3457 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
3458                                struct wpabuf *proberesp_ies)
3459 {
3460         struct wpa_supplicant *wpa_s = ctx;
3461         if (wpa_s->ap_iface) {
3462                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
3463                 if (beacon_ies) {
3464                         wpabuf_free(hapd->p2p_beacon_ie);
3465                         hapd->p2p_beacon_ie = beacon_ies;
3466                 }
3467                 wpabuf_free(hapd->p2p_probe_resp_ie);
3468                 hapd->p2p_probe_resp_ie = proberesp_ies;
3469         } else {
3470                 wpabuf_free(beacon_ies);
3471                 wpabuf_free(proberesp_ies);
3472         }
3473         wpa_supplicant_ap_update_beacon(wpa_s);
3474 }
3475
3476
3477 static void wpas_p2p_idle_update(void *ctx, int idle)
3478 {
3479         struct wpa_supplicant *wpa_s = ctx;
3480         if (!wpa_s->ap_iface)
3481                 return;
3482         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
3483         if (idle)
3484                 wpas_p2p_set_group_idle_timeout(wpa_s);
3485         else
3486                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
3487 }
3488
3489
3490 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
3491                                        int persistent_group,
3492                                        int group_formation)
3493 {
3494         struct p2p_group *group;
3495         struct p2p_group_config *cfg;
3496
3497         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3498                 return NULL;
3499         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3500                 return NULL;
3501
3502         cfg = os_zalloc(sizeof(*cfg));
3503         if (cfg == NULL)
3504                 return NULL;
3505
3506         cfg->persistent_group = persistent_group;
3507         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
3508         if (wpa_s->max_stations &&
3509             wpa_s->max_stations < wpa_s->conf->max_num_sta)
3510                 cfg->max_clients = wpa_s->max_stations;
3511         else
3512                 cfg->max_clients = wpa_s->conf->max_num_sta;
3513         cfg->cb_ctx = wpa_s;
3514         cfg->ie_update = wpas_p2p_ie_update;
3515         cfg->idle_update = wpas_p2p_idle_update;
3516
3517         group = p2p_group_init(wpa_s->global->p2p, cfg);
3518         if (group == NULL)
3519                 os_free(cfg);
3520         if (!group_formation)
3521                 p2p_group_notif_formation_done(group);
3522         wpa_s->p2p_group = group;
3523         return group;
3524 }
3525
3526
3527 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3528                           int registrar)
3529 {
3530         if (!wpa_s->p2p_in_provisioning) {
3531                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
3532                            "provisioning not in progress");
3533                 return;
3534         }
3535
3536         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
3537                              NULL);
3538         if (wpa_s->global->p2p)
3539                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
3540         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3541                 wpa_drv_wps_success_cb(wpa_s, peer_addr);
3542         wpas_group_formation_completed(wpa_s, 1);
3543 }
3544
3545
3546 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
3547                          struct wps_event_fail *fail)
3548 {
3549         if (!wpa_s->p2p_in_provisioning) {
3550                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
3551                            "provisioning not in progress");
3552                 return;
3553         }
3554         wpas_notify_p2p_wps_failed(wpa_s, fail);
3555 }
3556
3557
3558 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3559                        const char *config_method)
3560 {
3561         u16 config_methods;
3562
3563         if (os_strcmp(config_method, "display") == 0)
3564                 config_methods = WPS_CONFIG_DISPLAY;
3565         else if (os_strcmp(config_method, "keypad") == 0)
3566                 config_methods = WPS_CONFIG_KEYPAD;
3567         else if (os_strcmp(config_method, "pbc") == 0 ||
3568                  os_strcmp(config_method, "pushbutton") == 0)
3569                 config_methods = WPS_CONFIG_PUSHBUTTON;
3570         else
3571                 return -1;
3572
3573         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
3574                 return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr,
3575                                                  config_methods);
3576         }
3577
3578         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
3579                 return -1;
3580
3581         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
3582                                  config_methods, 0);
3583 }
3584
3585
3586 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
3587                               char *end)
3588 {
3589         return p2p_scan_result_text(ies, ies_len, buf, end);
3590 }
3591
3592
3593 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
3594 {
3595         if (!wpa_s->pending_action_tx)
3596                 return;
3597
3598         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
3599                    "operation request");
3600         wpabuf_free(wpa_s->pending_action_tx);
3601         wpa_s->pending_action_tx = NULL;
3602 }
3603
3604
3605 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
3606                   enum p2p_discovery_type type,
3607                   unsigned int num_req_dev_types, const u8 *req_dev_types)
3608 {
3609         wpas_p2p_clear_pending_action_tx(wpa_s);
3610         wpa_s->p2p_long_listen = 0;
3611
3612         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3613                 return wpa_drv_p2p_find(wpa_s, timeout, type);
3614
3615         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3616                 return -1;
3617
3618         return p2p_find(wpa_s->global->p2p, timeout, type,
3619                         num_req_dev_types, req_dev_types);
3620 }
3621
3622
3623 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
3624 {
3625         wpas_p2p_clear_pending_action_tx(wpa_s);
3626         wpa_s->p2p_long_listen = 0;
3627         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
3628         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3629
3630         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
3631                 wpa_drv_p2p_stop_find(wpa_s);
3632                 return;
3633         }
3634
3635         if (wpa_s->global->p2p)
3636                 p2p_stop_find(wpa_s->global->p2p);
3637
3638         wpas_p2p_remove_pending_group_interface(wpa_s);
3639 }
3640
3641
3642 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
3643 {
3644         struct wpa_supplicant *wpa_s = eloop_ctx;
3645         wpa_s->p2p_long_listen = 0;
3646 }
3647
3648
3649 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
3650 {
3651         int res;
3652
3653         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3654                 return -1;
3655
3656         wpas_p2p_clear_pending_action_tx(wpa_s);
3657
3658         if (timeout == 0) {
3659                 /*
3660                  * This is a request for unlimited Listen state. However, at
3661                  * least for now, this is mapped to a Listen state for one
3662                  * hour.
3663                  */
3664                 timeout = 3600;
3665         }
3666         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
3667         wpa_s->p2p_long_listen = 0;
3668
3669         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
3670         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
3671                 wpa_s->p2p_long_listen = timeout * 1000;
3672                 eloop_register_timeout(timeout, 0,
3673                                        wpas_p2p_long_listen_timeout,
3674                                        wpa_s, NULL);
3675         }
3676
3677         return res;
3678 }
3679
3680
3681 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
3682                           u8 *buf, size_t len, int p2p_group)
3683 {
3684         struct wpabuf *p2p_ie;
3685         int ret;
3686
3687         if (wpa_s->global->p2p_disabled)
3688                 return -1;
3689         if (wpa_s->global->p2p == NULL)
3690                 return -1;
3691         if (bss == NULL)
3692                 return -1;
3693
3694         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
3695 #ifdef ANDROID_BRCM_P2P_PATCH
3696         if (p2p_ie == NULL) return -1;
3697 #endif
3698         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
3699                                p2p_group, p2p_ie);
3700         wpabuf_free(p2p_ie);
3701
3702         return ret;
3703 }
3704
3705
3706 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
3707                           const u8 *ie, size_t ie_len)
3708 {
3709         if (wpa_s->global->p2p_disabled)
3710                 return 0;
3711         if (wpa_s->global->p2p == NULL)
3712                 return 0;
3713
3714         return p2p_probe_req_rx(wpa_s->global->p2p, addr, ie, ie_len);
3715 }
3716
3717
3718 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
3719                         const u8 *sa, const u8 *bssid,
3720                         u8 category, const u8 *data, size_t len, int freq)
3721 {
3722         if (wpa_s->global->p2p_disabled)
3723                 return;
3724         if (wpa_s->global->p2p == NULL)
3725                 return;
3726
3727         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
3728                       freq);
3729 }
3730
3731
3732 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
3733 {
3734         if (wpa_s->global->p2p_disabled)
3735                 return;
3736         if (wpa_s->global->p2p == NULL)
3737                 return;
3738
3739         p2p_scan_ie(wpa_s->global->p2p, ies);
3740 }
3741
3742
3743 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
3744 {
3745         p2p_group_deinit(wpa_s->p2p_group);
3746         wpa_s->p2p_group = NULL;
3747 }
3748
3749
3750 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
3751 {
3752         wpa_s->p2p_long_listen = 0;
3753
3754         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3755                 return wpa_drv_p2p_reject(wpa_s, addr);
3756
3757         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3758                 return -1;
3759
3760         return p2p_reject(wpa_s->global->p2p, addr);
3761 }
3762
3763
3764 /* Invite to reinvoke a persistent group */
3765 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3766                     struct wpa_ssid *ssid, const u8 *go_dev_addr)
3767 {
3768         enum p2p_invite_role role;
3769         u8 *bssid = NULL;
3770 #ifdef ANDROID_BRCM_P2P_PATCH
3771         int go;
3772 #endif
3773
3774         if (ssid->mode == WPAS_MODE_P2P_GO) {
3775                 role = P2P_INVITE_ROLE_GO;
3776                 if (peer_addr == NULL) {
3777                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
3778                                    "address in invitation command");
3779                         return -1;
3780                 }
3781
3782 #ifdef ANDROID_BRCM_P2P_PATCH
3783         wpa_printf(MSG_DEBUG, "P2P: Check to see if already runnig persistent wpa_s %p grp ssid %s ssid_len %d", wpa_s, ssid->ssid, ssid->ssid_len);
3784         if(wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go)) {
3785                 wpa_printf(MSG_DEBUG, "P2P: We are already running persistent group");
3786                 if (go)
3787                         bssid = wpa_s->own_addr;
3788                 else
3789                         wpa_printf(MSG_DEBUG, "P2P: We are running persistent group but go is not set");
3790         } else {
3791                 wpa_printf(MSG_DEBUG, "P2P: We are NOT already running persistent group");
3792 #endif
3793
3794                 if (wpas_p2p_create_iface(wpa_s)) {
3795                         if (wpas_p2p_add_group_interface(wpa_s,
3796                                                          WPA_IF_P2P_GO) < 0) {
3797                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
3798                                            "allocate a new interface for the "
3799                                            "group");
3800                                 return -1;
3801                         }
3802                         bssid = wpa_s->pending_interface_addr;
3803                 } else
3804                         bssid = wpa_s->own_addr;
3805 #ifdef ANDROID_BRCM_P2P_PATCH
3806         }
3807 #endif
3808         } else {
3809                 role = P2P_INVITE_ROLE_CLIENT;
3810                 peer_addr = ssid->bssid;
3811         }
3812         wpa_s->pending_invite_ssid_id = ssid->id;
3813
3814         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3815                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
3816                                           ssid->ssid, ssid->ssid_len,
3817                                           go_dev_addr, 1);
3818
3819         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3820                 return -1;
3821
3822         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
3823                           ssid->ssid, ssid->ssid_len, 0, go_dev_addr, 1);
3824 }
3825
3826
3827 /* Invite to join an active group */
3828 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
3829                           const u8 *peer_addr, const u8 *go_dev_addr)
3830 {
3831         struct wpa_global *global = wpa_s->global;
3832         enum p2p_invite_role role;
3833         u8 *bssid = NULL;
3834         struct wpa_ssid *ssid;
3835
3836         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3837                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
3838                         break;
3839         }
3840         if (wpa_s == NULL) {
3841                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
3842                 return -1;
3843         }
3844
3845         ssid = wpa_s->current_ssid;
3846         if (ssid == NULL) {
3847                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
3848                            "invitation");
3849                 return -1;
3850         }
3851
3852         if (ssid->mode == WPAS_MODE_P2P_GO) {
3853                 role = P2P_INVITE_ROLE_ACTIVE_GO;
3854                 bssid = wpa_s->own_addr;
3855                 if (go_dev_addr == NULL)
3856                         go_dev_addr = wpa_s->parent->own_addr;
3857         } else {
3858                 role = P2P_INVITE_ROLE_CLIENT;
3859                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
3860                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
3861                                    "invite to current group");
3862                         return -1;
3863                 }
3864                 bssid = wpa_s->bssid;
3865                 if (go_dev_addr == NULL &&
3866                     !is_zero_ether_addr(wpa_s->go_dev_addr))
3867                         go_dev_addr = wpa_s->go_dev_addr;
3868         }
3869         wpa_s->parent->pending_invite_ssid_id = -1;
3870
3871         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3872                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
3873                                           ssid->ssid, ssid->ssid_len,
3874                                           go_dev_addr, 0);
3875
3876         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3877                 return -1;
3878
3879         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
3880                           ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq,
3881                           go_dev_addr, 0);
3882 }
3883
3884
3885 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
3886 {
3887         struct wpa_ssid *ssid = wpa_s->current_ssid;
3888         const char *ssid_txt;
3889         u8 go_dev_addr[ETH_ALEN];
3890         int network_id = -1;
3891         int persistent;
3892
3893         if (!wpa_s->show_group_started || !ssid)
3894                 return;
3895
3896         wpa_s->show_group_started = 0;
3897
3898         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
3899         os_memset(go_dev_addr, 0, ETH_ALEN);
3900         if (ssid->bssid_set)
3901                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
3902         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
3903                                                ssid->ssid_len);
3904         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
3905
3906         if (wpa_s->global->p2p_group_formation == wpa_s)
3907                 wpa_s->global->p2p_group_formation = NULL;
3908
3909         if (ssid->passphrase == NULL && ssid->psk_set) {
3910                 char psk[65];
3911                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
3912                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
3913                         "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr="
3914                         MACSTR "%s",
3915                 #ifdef ANDROID_BRCM_P2P_PATCH
3916                         wpa_s->ifname, ssid_txt, wpa_s->current_bss->freq, psk,
3917                 #else
3918                         wpa_s->ifname, ssid_txt, ssid->frequency, psk,
3919                 #endif
3920                         MAC2STR(go_dev_addr),
3921                         persistent ? " [PERSISTENT]" : "");
3922         } else {
3923                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
3924                         "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" "
3925                         "go_dev_addr=" MACSTR "%s",
3926                 #ifdef ANDROID_BRCM_P2P_PATCH
3927                         wpa_s->ifname, ssid_txt, wpa_s->current_bss->freq,
3928                 #else
3929                         wpa_s->ifname, ssid_txt, ssid->frequency,
3930                 #endif
3931                         ssid->passphrase ? ssid->passphrase : "",
3932                         MAC2STR(go_dev_addr),
3933                         persistent ? " [PERSISTENT]" : "");
3934         }
3935
3936         if (persistent)
3937                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
3938                                                              ssid, go_dev_addr);
3939         if (network_id < 0)
3940                 network_id = ssid->id;
3941         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
3942 }
3943
3944
3945 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
3946                           u32 interval1, u32 duration2, u32 interval2)
3947 {
3948         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3949                 return -1;
3950         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3951                 return -1;
3952
3953         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
3954             wpa_s->current_ssid == NULL ||
3955             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
3956                 return -1;
3957
3958         return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
3959                                 wpa_s->own_addr, wpa_s->assoc_freq,
3960                                 duration1, interval1, duration2, interval2);
3961 }
3962
3963
3964 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
3965                         unsigned int interval)
3966 {
3967         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3968                 return -1;
3969
3970         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3971                 return -1;
3972
3973         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
3974 }
3975
3976
3977 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
3978 {
3979         struct wpa_supplicant *wpa_s = eloop_ctx;
3980
3981         if (wpa_s->conf->p2p_group_idle == 0) {
3982                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
3983                            "disabled");
3984                 return;
3985         }
3986
3987         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
3988                    "group");
3989         wpa_s->removal_reason = P2P_GROUP_REMOVAL_IDLE_TIMEOUT;
3990         wpas_p2p_group_delete(wpa_s);
3991 }
3992
3993
3994 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
3995 {
3996         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
3997         if (wpa_s->conf->p2p_group_idle == 0)
3998                 return;
3999
4000         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
4001                 return;
4002
4003         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
4004                    wpa_s->conf->p2p_group_idle);
4005         eloop_register_timeout(wpa_s->conf->p2p_group_idle, 0,
4006                                wpas_p2p_group_idle_timeout, wpa_s, NULL);
4007 }
4008
4009
4010 void wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4011                            u16 reason_code, const u8 *ie, size_t ie_len)
4012 {
4013         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4014                 return;
4015         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4016                 return;
4017
4018         p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie, ie_len);
4019 }
4020
4021 #ifdef ANDROID_BRCM_P2P_PATCH
4022 void wpas_p2p_group_remove_notif(struct wpa_supplicant *wpa_s, u16 reason_code)
4023 {
4024         if(wpa_s->global->p2p_disabled)
4025                 return;
4026
4027         /* If we are running a P2P Client and we received a Deauth/Disassoc from the Go, then remove
4028            the virutal interface on which the client is running. */
4029         if((wpa_s != wpa_s->parent) && (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) && (wpa_s->key_mgmt != WPA_KEY_MGMT_WPS)) {
4030
4031                 wpa_printf(MSG_DEBUG, "P2P: [EVENT_DEAUTH] Removing P2P_CLIENT virtual intf.");
4032                 wpa_supplicant_cancel_scan(wpa_s);
4033                 wpa_s->removal_reason = P2P_GROUP_REMOVAL_UNAVAILABLE;
4034                 wpas_p2p_group_delete(wpa_s);
4035         }
4036 }
4037 #endif
4038
4039 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4040                              u16 reason_code, const u8 *ie, size_t ie_len)
4041 {
4042         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4043                 return;
4044         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4045                 return;
4046
4047         p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie, ie_len);
4048 }
4049
4050
4051 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
4052 {
4053         struct p2p_data *p2p = wpa_s->global->p2p;
4054
4055         if (p2p == NULL)
4056                 return;
4057
4058         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4059                 return;
4060
4061         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
4062                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
4063
4064         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
4065                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
4066
4067         if (wpa_s->wps &&
4068             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
4069                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
4070
4071         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
4072                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
4073
4074         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
4075                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
4076                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
4077                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
4078                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
4079         }
4080
4081         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
4082                 p2p_set_sec_dev_types(p2p,
4083                                       (void *) wpa_s->conf->sec_device_type,
4084                                       wpa_s->conf->num_sec_device_types);
4085
4086         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
4087                 int i;
4088                 p2p_remove_wps_vendor_extensions(p2p);
4089                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4090                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4091                                 continue;
4092                         p2p_add_wps_vendor_extension(
4093                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
4094                 }
4095         }
4096
4097         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
4098             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4099                 char country[3];
4100                 country[0] = wpa_s->conf->country[0];
4101                 country[1] = wpa_s->conf->country[1];
4102                 country[2] = 0x04;
4103                 p2p_set_country(p2p, country);
4104         }
4105
4106         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
4107                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
4108                                      wpa_s->conf->p2p_ssid_postfix ?
4109                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
4110                                      0);
4111         }
4112
4113         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
4114                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
4115
4116         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
4117                 u8 reg_class, channel;
4118                 int ret;
4119                 unsigned int r;
4120                 if (wpa_s->conf->p2p_listen_reg_class &&
4121                     wpa_s->conf->p2p_listen_channel) {
4122                         reg_class = wpa_s->conf->p2p_listen_reg_class;
4123                         channel = wpa_s->conf->p2p_listen_channel;
4124                 } else {
4125                         reg_class = 81;
4126                         /*
4127                          * Pick one of the social channels randomly as the
4128                          * listen channel.
4129                          */
4130                         os_get_random((u8 *) &r, sizeof(r));
4131                         channel = 1 + (r % 3) * 5;
4132                 }
4133                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
4134                 if (ret)
4135                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
4136                                    "failed: %d", ret);
4137         }
4138         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
4139                 u8 op_reg_class, op_channel, cfg_op_channel;
4140                 int ret = 0;
4141                 unsigned int r;
4142                 if (wpa_s->conf->p2p_oper_reg_class &&
4143                     wpa_s->conf->p2p_oper_channel) {
4144                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4145                         op_channel = wpa_s->conf->p2p_oper_channel;
4146                         cfg_op_channel = 1;
4147                 } else {
4148                         op_reg_class = 81;
4149                         /*
4150                          * Use random operation channel from (1, 6, 11)
4151                          *if no other preference is indicated.
4152                          */
4153                         os_get_random((u8 *) &r, sizeof(r));
4154                         op_channel = 1 + (r % 3) * 5;
4155                         cfg_op_channel = 0;
4156                 }
4157                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
4158                                            cfg_op_channel);
4159                 if (ret)
4160                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
4161                                    "failed: %d", ret);
4162         }
4163 }
4164
4165
4166 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
4167                      int duration)
4168 {
4169         if (!wpa_s->ap_iface)
4170                 return -1;
4171
4172 #ifdef ANDROID_BRCM_P2P_PATCH
4173 #define NOA_BUF_LEN 50
4174         /* Now get the NOA descriptor from the driver */
4175         hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
4176                                                    duration);
4177         if(count > 0) {
4178                 u8 noa[NOA_BUF_LEN];
4179                 int noa_len = 0;
4180                 wpa_printf(MSG_DEBUG, "P2P: Get NOA attribute from driver");
4181                 noa_len = wpa_drv_get_noa(wpa_s, noa, NOA_BUF_LEN);
4182                 if (noa_len) {
4183                         wpa_printf(MSG_DEBUG, "P2P: Now Update NOA attributes in Beacons/ProbeRsps noa_len %d", noa_len);
4184                         return p2p_group_notif_noa(wpa_s->p2p_group, noa, noa_len);
4185                 }
4186                 else
4187                         return 0;
4188         }
4189         else
4190                 return 0;
4191 #else
4192         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
4193                                    duration);
4194 #endif
4195 }
4196
4197 #ifdef ANDROID_BRCM_P2P_PATCH
4198 int wpas_drv_set_p2p_powersave(struct wpa_supplicant *wpa_s, int legacy_ps, int opp_ps, int ctwindow)
4199 {
4200 #define NOA_BUF_LEN 50
4201         u8 noa[NOA_BUF_LEN];
4202         int noa_len = 0;
4203         wpa_drv_set_p2p_powersave(wpa_s, legacy_ps, opp_ps, ctwindow);
4204         wpa_printf(MSG_DEBUG, "P2P: Get NOA attribute from driver");
4205         noa_len = wpa_drv_get_noa(wpa_s, noa, NOA_BUF_LEN);
4206         if (noa_len) {
4207                 wpa_printf(MSG_DEBUG, "P2P: Now Update NOA attributes in Beacons/ProbeRsps noa_len %d", noa_len);
4208                 return p2p_group_notif_noa(wpa_s->p2p_group, noa, noa_len);
4209         }
4210         else
4211                 return 0;
4212 }
4213 #endif
4214
4215 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
4216 {
4217         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4218                 return -1;
4219         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4220                 return -1;
4221
4222         wpa_s->global->cross_connection = enabled;
4223         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
4224
4225         if (!enabled) {
4226                 struct wpa_supplicant *iface;
4227
4228                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
4229                 {
4230                         if (iface->cross_connect_enabled == 0)
4231                                 continue;
4232
4233                         iface->cross_connect_enabled = 0;
4234                         iface->cross_connect_in_use = 0;
4235                         wpa_msg(iface->parent, MSG_INFO,
4236                                 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
4237                                 iface->ifname, iface->cross_connect_uplink);
4238                 }
4239         }
4240
4241         return 0;
4242 }
4243
4244
4245 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
4246 {
4247         struct wpa_supplicant *iface;
4248
4249         if (!uplink->global->cross_connection)
4250                 return;
4251
4252         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
4253                 if (!iface->cross_connect_enabled)
4254                         continue;
4255                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
4256                     0)
4257                         continue;
4258                 if (iface->ap_iface == NULL)
4259                         continue;
4260                 if (iface->cross_connect_in_use)
4261                         continue;
4262
4263                 iface->cross_connect_in_use = 1;
4264                 wpa_msg(iface->parent, MSG_INFO,
4265                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
4266                         iface->ifname, iface->cross_connect_uplink);
4267         }
4268 }
4269
4270
4271 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
4272 {
4273         struct wpa_supplicant *iface;
4274
4275         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
4276                 if (!iface->cross_connect_enabled)
4277                         continue;
4278                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
4279                     0)
4280                         continue;
4281                 if (!iface->cross_connect_in_use)
4282                         continue;
4283
4284                 wpa_msg(iface->parent, MSG_INFO,
4285                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
4286                         iface->ifname, iface->cross_connect_uplink);
4287                 iface->cross_connect_in_use = 0;
4288         }
4289 }
4290
4291
4292 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
4293 {
4294         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
4295             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
4296             wpa_s->cross_connect_disallowed)
4297                 wpas_p2p_disable_cross_connect(wpa_s);
4298         else
4299                 wpas_p2p_enable_cross_connect(wpa_s);
4300         if (!wpa_s->ap_iface)
4301                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4302 }
4303
4304
4305 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
4306 {
4307         wpas_p2p_disable_cross_connect(wpa_s);
4308         if (!wpa_s->ap_iface)
4309                 wpas_p2p_set_group_idle_timeout(wpa_s);
4310 }
4311
4312
4313 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
4314 {
4315         struct wpa_supplicant *iface;
4316
4317         if (!wpa_s->global->cross_connection)
4318                 return;
4319
4320         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
4321                 if (iface == wpa_s)
4322                         continue;
4323                 if (iface->drv_flags &
4324                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
4325                         continue;
4326                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
4327                         continue;
4328
4329                 wpa_s->cross_connect_enabled = 1;
4330                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
4331                            sizeof(wpa_s->cross_connect_uplink));
4332                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
4333                            "%s to %s whenever uplink is available",
4334                            wpa_s->ifname, wpa_s->cross_connect_uplink);
4335
4336                 if (iface->ap_iface || iface->current_ssid == NULL ||
4337                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
4338                     iface->cross_connect_disallowed ||
4339                     iface->wpa_state != WPA_COMPLETED)
4340                         break;
4341
4342                 wpa_s->cross_connect_in_use = 1;
4343                 wpa_msg(wpa_s->parent, MSG_INFO,
4344                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
4345                         wpa_s->ifname, wpa_s->cross_connect_uplink);
4346                 break;
4347         }
4348 }
4349
4350
4351 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
4352 {
4353         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
4354             !wpa_s->p2p_in_provisioning)
4355                 return 0; /* not P2P client operation */
4356
4357         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
4358                    "session overlap");
4359         if (wpa_s != wpa_s->parent)
4360                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
4361
4362         if (wpa_s->global->p2p)
4363                 p2p_group_formation_failed(wpa_s->global->p2p);
4364
4365         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
4366                              wpa_s->parent, NULL);
4367
4368         wpas_group_formation_completed(wpa_s, 0);
4369         return 1;
4370 }
4371
4372
4373 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
4374 {
4375         struct p2p_channels chan;
4376
4377         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
4378                 return;
4379
4380         os_memset(&chan, 0, sizeof(chan));
4381         if (wpas_p2p_setup_channels(wpa_s, &chan)) {
4382                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
4383                            "channel list");
4384                 return;
4385         }
4386
4387         p2p_update_channel_list(wpa_s->global->p2p, &chan);
4388 }
4389
4390
4391 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
4392 {
4393         struct wpa_global *global = wpa_s->global;
4394         int found = 0;
4395         const u8 *peer;
4396
4397         if (global->p2p == NULL)
4398                 return -1;
4399
4400         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
4401
4402         if (wpa_s->pending_interface_name[0] &&
4403             !is_zero_ether_addr(wpa_s->pending_interface_addr))
4404                 found = 1;
4405
4406         peer = p2p_get_go_neg_peer(global->p2p);
4407         if (peer) {
4408                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
4409                            MACSTR, MAC2STR(peer));
4410                 p2p_unauthorize(global->p2p, peer);
4411         }
4412
4413         wpas_p2p_stop_find(wpa_s);
4414
4415         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4416                 if (wpa_s == global->p2p_group_formation &&
4417                     (wpa_s->p2p_in_provisioning ||
4418                      wpa_s->parent->pending_interface_type ==
4419                      WPA_IF_P2P_CLIENT)) {
4420                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
4421                                    "formation found - cancelling",
4422                                    wpa_s->ifname);
4423                         found = 1;
4424                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
4425                                              wpa_s->parent, NULL);
4426                         wpas_p2p_group_delete(wpa_s);
4427                         break;
4428                 }
4429         }
4430
4431         if (!found) {
4432                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
4433                 return -1;
4434         }
4435
4436         return 0;
4437 }
4438
4439
4440 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
4441 {
4442         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
4443                 return;
4444
4445         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
4446                    "being available anymore");
4447         wpa_s->removal_reason = P2P_GROUP_REMOVAL_UNAVAILABLE;
4448         wpas_p2p_group_delete(wpa_s);
4449 }
4450
4451
4452 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
4453                                    int freq_24, int freq_5, int freq_overall)
4454 {
4455         struct p2p_data *p2p = wpa_s->global->p2p;
4456         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
4457                 return;
4458         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
4459 }
4460
4461
4462 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
4463 {
4464         u8 peer[ETH_ALEN];
4465         struct p2p_data *p2p = wpa_s->global->p2p;
4466
4467         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
4468                 return -1;
4469
4470         if (hwaddr_aton(addr, peer))
4471                 return -1;
4472
4473         return p2p_unauthorize(p2p, peer);
4474 }
4475
4476
4477 /**
4478  * wpas_p2p_disconnect - Disconnect from a P2P Group
4479  * @wpa_s: Pointer to wpa_supplicant data
4480  * Returns: 0 on success, -1 on failure
4481  *
4482  * This can be used to disconnect from a group in which the local end is a P2P
4483  * Client or to end a P2P Group in case the local end is the Group Owner. If a
4484  * virtual network interface was created for this group, that interface will be
4485  * removed. Otherwise, only the configured P2P group network will be removed
4486  * from the interface.
4487  */
4488 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
4489 {
4490
4491         if (wpa_s == NULL)
4492                 return -1;
4493
4494         wpa_s->removal_reason = P2P_GROUP_REMOVAL_REQUESTED;
4495         wpas_p2p_group_delete(wpa_s);
4496
4497         return 0;
4498 }