wpa_supplicant/p2p_supplicant.c

   1 /*
   2  * wpa_supplicant - P2P
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eloop.h"
  13 #include "common/ieee802_11_common.h"
  14 #include "common/ieee802_11_defs.h"
  15 #include "common/wpa_ctrl.h"
  16 #include "wps/wps_i.h"
  17 #include "p2p/p2p.h"
  18 #include "ap/hostapd.h"
  19 #include "ap/ap_config.h"
  20 #include "ap/p2p_hostapd.h"
  21 #include "eapol_supp/eapol_supp_sm.h"
  22 #include "rsn_supp/wpa.h"
  23 #include "wpa_supplicant_i.h"
  24 #include "driver_i.h"
  25 #include "ap.h"
  26 #include "config_ssid.h"
  27 #include "config.h"
  28 #include "notify.h"
  29 #include "scan.h"
  30 #include "bss.h"
  31 #include "offchannel.h"
  32 #include "wps_supplicant.h"
  33 #include "p2p_supplicant.h"
  34
  35
  36 /*
  37  * How many times to try to scan to find the GO before giving up on join
  38  * request.
  39  */
  40 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  41
  42 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
  43
  44 #ifndef P2P_MAX_CLIENT_IDLE
  45 /*
  46  * How many seconds to try to reconnect to the GO when connection in P2P client
  47  * role has been lost.
  48  */
  49 #define P2P_MAX_CLIENT_IDLE 10
  50 #endif /* P2P_MAX_CLIENT_IDLE */
  51
  52 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  53 /*
  54  * How many seconds to wait for initial 4-way handshake to get completed after
  55  * WPS provisioning step.
  56  */
  57 #define P2P_MAX_INITIAL_CONN_WAIT 10
  58 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  59
  60 #ifndef P2P_CONCURRENT_SEARCH_DELAY
  61 #define P2P_CONCURRENT_SEARCH_DELAY 500
  62 #endif /* P2P_CONCURRENT_SEARCH_DELAY */
  63
  64 enum p2p_group_removal_reason {
  65         P2P_GROUP_REMOVAL_UNKNOWN,
  66         P2P_GROUP_REMOVAL_SILENT,
  67         P2P_GROUP_REMOVAL_FORMATION_FAILED,
  68         P2P_GROUP_REMOVAL_REQUESTED,
  69         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
  70         P2P_GROUP_REMOVAL_UNAVAILABLE,
  71         P2P_GROUP_REMOVAL_GO_ENDING_SESSION
  72 };
  73
  74
  75 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  76 static struct wpa_supplicant *
  77 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
  78                          int go);
  79 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s);
  80 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq);
  81 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
  82 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
  83                          const u8 *dev_addr, enum p2p_wps_method wps_method,
  84                          int auto_join);
  85 static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx,
  86                                             void *timeout_ctx);
  87 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
  88 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
  89 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
  90 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
  91 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
  92                                         int group_added);
  93
  94
  95 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
  96                                       struct wpa_scan_results *scan_res)
  97 {
  98         size_t i;
  99
 100         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 101                 return;
 102
 103         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 104                    (int) scan_res->num);
 105
 106         for (i = 0; i < scan_res->num; i++) {
 107                 struct wpa_scan_res *bss = scan_res->res[i];
 108                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 109                                          bss->freq, bss->level,
 110                                          (const u8 *) (bss + 1),
 111                                          bss->ie_len) > 0)
 112                         break;
 113         }
 114
 115         p2p_scan_res_handled(wpa_s->global->p2p);
 116 }
 117
 118
 119 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 120                          unsigned int num_req_dev_types,
 121                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 122 {
 123         struct wpa_supplicant *wpa_s = ctx;
 124         struct wpa_supplicant *ifs;
 125         struct wpa_driver_scan_params params;
 126         int ret;
 127         struct wpabuf *wps_ie, *ies;
 128         int social_channels[] = { 2412, 2437, 2462, 0, 0 };
 129         size_t ielen;
 130
 131         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 132                 return -1;
 133
 134         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
 135                 if (ifs->sta_scan_pending &&
 136                     wpas_p2p_in_progress(wpa_s) == 2) {
 137                         wpa_printf(MSG_DEBUG, "Delaying P2P scan to allow "
 138                                    "pending station mode scan to be "
 139                                    "completed on interface %s", ifs->ifname);
 140                         wpa_s->global->p2p_cb_on_scan_complete = 1;
 141                         wpa_supplicant_req_scan(ifs, 0, 0);
 142                         return 1;
 143                 }
 144         }
 145
 146         os_memset(&params, 0, sizeof(params));
 147
 148         /* P2P Wildcard SSID */
 149         params.num_ssids = 1;
 150         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
 151         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 152
 153         wpa_s->wps->dev.p2p = 1;
 154         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 155                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 156                                         num_req_dev_types, req_dev_types);
 157         if (wps_ie == NULL)
 158                 return -1;
 159
 160         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 161         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 162         if (ies == NULL) {
 163                 wpabuf_free(wps_ie);
 164                 return -1;
 165         }
 166         wpabuf_put_buf(ies, wps_ie);
 167         wpabuf_free(wps_ie);
 168
 169         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 170
 171         params.p2p_probe = 1;
 172         params.extra_ies = wpabuf_head(ies);
 173         params.extra_ies_len = wpabuf_len(ies);
 174
 175         switch (type) {
 176         case P2P_SCAN_SOCIAL:
 177                 params.freqs = social_channels;
 178                 break;
 179         case P2P_SCAN_FULL:
 180                 break;
 181         case P2P_SCAN_SOCIAL_PLUS_ONE:
 182                 social_channels[3] = freq;
 183                 params.freqs = social_channels;
 184                 break;
 185         }
 186
 187         ret = wpa_drv_scan(wpa_s, &params);
 188
 189         wpabuf_free(ies);
 190
 191         if (ret) {
 192                 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
 193                         if (ifs->scanning ||
 194                             ifs->scan_res_handler == wpas_p2p_scan_res_handler) {
 195                                 wpa_s->global->p2p_cb_on_scan_complete = 1;
 196                                 ret = 1;
 197                                 break;
 198                         }
 199                 }
 200         } else
 201                 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 202
 203         return ret;
 204 }
 205
 206
 207 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 208 {
 209         switch (p2p_group_interface) {
 210         case P2P_GROUP_INTERFACE_PENDING:
 211                 return WPA_IF_P2P_GROUP;
 212         case P2P_GROUP_INTERFACE_GO:
 213                 return WPA_IF_P2P_GO;
 214         case P2P_GROUP_INTERFACE_CLIENT:
 215                 return WPA_IF_P2P_CLIENT;
 216         }
 217
 218         return WPA_IF_P2P_GROUP;
 219 }
 220
 221
 222 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 223                                                   const u8 *ssid,
 224                                                   size_t ssid_len, int *go)
 225 {
 226         struct wpa_ssid *s;
 227
 228         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 229                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 230                         if (s->disabled != 0 || !s->p2p_group ||
 231                             s->ssid_len != ssid_len ||
 232                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 233                                 continue;
 234                         if (s->mode == WPAS_MODE_P2P_GO &&
 235                             s != wpa_s->current_ssid)
 236                                 continue;
 237                         if (go)
 238                                 *go = s->mode == WPAS_MODE_P2P_GO;
 239                         return wpa_s;
 240                 }
 241         }
 242
 243         return NULL;
 244 }
 245
 246
 247 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 248                                  enum p2p_group_removal_reason removal_reason)
 249 {
 250         struct wpa_ssid *ssid;
 251         char *gtype;
 252         const char *reason;
 253
 254         ssid = wpa_s->current_ssid;
 255         if (ssid == NULL) {
 256                 /*
 257                  * The current SSID was not known, but there may still be a
 258                  * pending P2P group interface waiting for provisioning or a
 259                  * P2P group that is trying to reconnect.
 260                  */
 261                 ssid = wpa_s->conf->ssid;
 262                 while (ssid) {
 263                         if (ssid->p2p_group && ssid->disabled != 2)
 264                                 break;
 265                         ssid = ssid->next;
 266                 }
 267                 if (ssid == NULL &&
 268                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 269                 {
 270                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 271                                    "not found");
 272                         return -1;
 273                 }
 274         }
 275         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 276                 gtype = "GO";
 277         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 278                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 279                 wpa_s->reassociate = 0;
 280                 wpa_s->disconnected = 1;
 281                 wpa_supplicant_deauthenticate(wpa_s,
 282                                               WLAN_REASON_DEAUTH_LEAVING);
 283                 gtype = "client";
 284         } else
 285                 gtype = "GO";
 286         if (wpa_s->cross_connect_in_use) {
 287                 wpa_s->cross_connect_in_use = 0;
 288                 wpa_msg(wpa_s->parent, MSG_INFO,
 289                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 290                         wpa_s->ifname, wpa_s->cross_connect_uplink);
 291         }
 292         switch (removal_reason) {
 293         case P2P_GROUP_REMOVAL_REQUESTED:
 294                 reason = " reason=REQUESTED";
 295                 break;
 296         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 297                 reason = " reason=FORMATION_FAILED";
 298                 break;
 299         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 300                 reason = " reason=IDLE";
 301                 break;
 302         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 303                 reason = " reason=UNAVAILABLE";
 304                 break;
 305         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 306                 reason = " reason=GO_ENDING_SESSION";
 307                 break;
 308         default:
 309                 reason = "";
 310                 break;
 311         }
 312         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 313                 wpa_msg(wpa_s->parent, MSG_INFO,
 314                         P2P_EVENT_GROUP_REMOVED "%s %s%s",
 315                         wpa_s->ifname, gtype, reason);
 316         }
 317
 318         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 319                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 320
 321         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 322                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 323
 324         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 325                 struct wpa_global *global;
 326                 char *ifname;
 327                 enum wpa_driver_if_type type;
 328                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 329                         wpa_s->ifname);
 330                 global = wpa_s->global;
 331                 ifname = os_strdup(wpa_s->ifname);
 332                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 333                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 334                 wpa_s = global->ifaces;
 335                 if (wpa_s && ifname)
 336                         wpa_drv_if_remove(wpa_s, type, ifname);
 337                 os_free(ifname);
 338                 return 1;
 339         }
 340
 341         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 342         if (ssid && (ssid->p2p_group ||
 343                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 344                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 345                 int id = ssid->id;
 346                 if (ssid == wpa_s->current_ssid) {
 347                         wpa_sm_set_config(wpa_s->wpa, NULL);
 348                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 349                         wpa_s->current_ssid = NULL;
 350                 }
 351                 /*
 352                  * Networks objects created during any P2P activities are not
 353                  * exposed out as they might/will confuse certain non-P2P aware
 354                  * applications since these network objects won't behave like
 355                  * regular ones.
 356                  *
 357                  * Likewise, we don't send out network removed signals for such
 358                  * network objects.
 359                  */
 360                 wpa_config_remove_network(wpa_s->conf, id);
 361                 wpa_supplicant_clear_status(wpa_s);
 362                 wpa_supplicant_cancel_sched_scan(wpa_s);
 363                 wpa_s->sta_scan_pending = 0;
 364         } else {
 365                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 366                            "found");
 367         }
 368         if (wpa_s->ap_iface)
 369                 wpa_supplicant_ap_deinit(wpa_s);
 370         else
 371                 wpa_drv_deinit_p2p_cli(wpa_s);
 372
 373         return 0;
 374 }
 375
 376
 377 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 378                                      u8 *go_dev_addr,
 379                                      const u8 *ssid, size_t ssid_len)
 380 {
 381         struct wpa_bss *bss;
 382         const u8 *bssid;
 383         struct wpabuf *p2p;
 384         u8 group_capab;
 385         const u8 *addr;
 386
 387         if (wpa_s->go_params)
 388                 bssid = wpa_s->go_params->peer_interface_addr;
 389         else
 390                 bssid = wpa_s->bssid;
 391
 392         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 393         if (bss == NULL) {
 394                 u8 iface_addr[ETH_ALEN];
 395                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 396                                            iface_addr) == 0)
 397                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 398         }
 399         if (bss == NULL) {
 400                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 401                            "group is persistent - BSS " MACSTR " not found",
 402                            MAC2STR(bssid));
 403                 return 0;
 404         }
 405
 406         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 407         if (p2p == NULL) {
 408                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 409                            "group is persistent - BSS " MACSTR
 410                            " did not include P2P IE", MAC2STR(bssid));
 411                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 412                             (u8 *) (bss + 1), bss->ie_len);
 413                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 414                             ((u8 *) bss + 1) + bss->ie_len,
 415                             bss->beacon_ie_len);
 416                 return 0;
 417         }
 418
 419         group_capab = p2p_get_group_capab(p2p);
 420         addr = p2p_get_go_dev_addr(p2p);
 421         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 422                    "group_capab=0x%x", group_capab);
 423         if (addr) {
 424                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
 425                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
 426                            MAC2STR(addr));
 427         } else
 428                 os_memset(go_dev_addr, 0, ETH_ALEN);
 429         wpabuf_free(p2p);
 430
 431         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
 432                    "go_dev_addr=" MACSTR,
 433                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
 434
 435         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
 436 }
 437
 438
 439 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
 440                                            struct wpa_ssid *ssid,
 441                                            const u8 *go_dev_addr)
 442 {
 443         struct wpa_ssid *s;
 444         int changed = 0;
 445
 446         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
 447                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
 448         for (s = wpa_s->conf->ssid; s; s = s->next) {
 449                 if (s->disabled == 2 &&
 450                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
 451                     s->ssid_len == ssid->ssid_len &&
 452                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
 453                         break;
 454         }
 455
 456         if (s) {
 457                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
 458                            "entry");
 459                 if (ssid->passphrase && !s->passphrase)
 460                         changed = 1;
 461                 else if (ssid->passphrase && s->passphrase &&
 462                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
 463                         changed = 1;
 464         } else {
 465                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
 466                            "entry");
 467                 changed = 1;
 468                 s = wpa_config_add_network(wpa_s->conf);
 469                 if (s == NULL)
 470                         return -1;
 471
 472                 /*
 473                  * Instead of network_added we emit persistent_group_added
 474                  * notification. Also to keep the defense checks in
 475                  * persistent_group obj registration method, we set the
 476                  * relevant flags in s to designate it as a persistent group.
 477                  */
 478                 s->p2p_group = 1;
 479                 s->p2p_persistent_group = 1;
 480                 wpas_notify_persistent_group_added(wpa_s, s);
 481                 wpa_config_set_network_defaults(s);
 482         }
 483
 484         s->p2p_group = 1;
 485         s->p2p_persistent_group = 1;
 486         s->disabled = 2;
 487         s->bssid_set = 1;
 488         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
 489         s->mode = ssid->mode;
 490         s->auth_alg = WPA_AUTH_ALG_OPEN;
 491         s->key_mgmt = WPA_KEY_MGMT_PSK;
 492         s->proto = WPA_PROTO_RSN;
 493         s->pairwise_cipher = WPA_CIPHER_CCMP;
 494         s->export_keys = 1;
 495         if (ssid->passphrase) {
 496                 os_free(s->passphrase);
 497                 s->passphrase = os_strdup(ssid->passphrase);
 498         }
 499         if (ssid->psk_set) {
 500                 s->psk_set = 1;
 501                 os_memcpy(s->psk, ssid->psk, 32);
 502         }
 503         if (s->passphrase && !s->psk_set)
 504                 wpa_config_update_psk(s);
 505         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
 506                 os_free(s->ssid);
 507                 s->ssid = os_malloc(ssid->ssid_len);
 508         }
 509         if (s->ssid) {
 510                 s->ssid_len = ssid->ssid_len;
 511                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
 512         }
 513
 514 #ifndef CONFIG_NO_CONFIG_WRITE
 515         if (changed && wpa_s->conf->update_config &&
 516             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 517                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 518         }
 519 #endif /* CONFIG_NO_CONFIG_WRITE */
 520
 521         return s->id;
 522 }
 523
 524
 525 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
 526                                                  const u8 *addr)
 527 {
 528         struct wpa_ssid *ssid, *s;
 529         u8 *n;
 530         size_t i;
 531         int found = 0;
 532
 533         ssid = wpa_s->current_ssid;
 534         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
 535             !ssid->p2p_persistent_group)
 536                 return;
 537
 538         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
 539                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
 540                         continue;
 541
 542                 if (s->ssid_len == ssid->ssid_len &&
 543                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
 544                         break;
 545         }
 546
 547         if (s == NULL)
 548                 return;
 549
 550         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
 551                 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
 552                               ETH_ALEN) != 0)
 553                         continue;
 554
 555                 if (i == s->num_p2p_clients - 1)
 556                         return; /* already the most recent entry */
 557
 558                 /* move the entry to mark it most recent */
 559                 os_memmove(s->p2p_client_list + i * ETH_ALEN,
 560                            s->p2p_client_list + (i + 1) * ETH_ALEN,
 561                            (s->num_p2p_clients - i - 1) * ETH_ALEN);
 562                 os_memcpy(s->p2p_client_list +
 563                           (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
 564                 found = 1;
 565                 break;
 566         }
 567
 568         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
 569                 n = os_realloc_array(s->p2p_client_list,
 570                                      s->num_p2p_clients + 1, ETH_ALEN);
 571                 if (n == NULL)
 572                         return;
 573                 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
 574                 s->p2p_client_list = n;
 575                 s->num_p2p_clients++;
 576         } else if (!found) {
 577                 /* Not enough room for an additional entry - drop the oldest
 578                  * entry */
 579                 os_memmove(s->p2p_client_list,
 580                            s->p2p_client_list + ETH_ALEN,
 581                            (s->num_p2p_clients - 1) * ETH_ALEN);
 582                 os_memcpy(s->p2p_client_list +
 583                           (s->num_p2p_clients - 1) * ETH_ALEN,
 584                           addr, ETH_ALEN);
 585         }
 586
 587 #ifndef CONFIG_NO_CONFIG_WRITE
 588         if (wpa_s->parent->conf->update_config &&
 589             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
 590                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 591 #endif /* CONFIG_NO_CONFIG_WRITE */
 592 }
 593
 594
 595 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 596                                            int success)
 597 {
 598         struct wpa_ssid *ssid;
 599         const char *ssid_txt;
 600         int client;
 601         int persistent;
 602         u8 go_dev_addr[ETH_ALEN];
 603         int network_id = -1;
 604
 605         /*
 606          * This callback is likely called for the main interface. Update wpa_s
 607          * to use the group interface if a new interface was created for the
 608          * group.
 609          */
 610         if (wpa_s->global->p2p_group_formation)
 611                 wpa_s = wpa_s->global->p2p_group_formation;
 612         wpa_s->global->p2p_group_formation = NULL;
 613         wpa_s->p2p_in_provisioning = 0;
 614
 615         if (!success) {
 616                 wpa_msg(wpa_s->parent, MSG_INFO,
 617                         P2P_EVENT_GROUP_FORMATION_FAILURE);
 618                 wpas_p2p_group_delete(wpa_s,
 619                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
 620                 return;
 621         }
 622
 623         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS);
 624
 625         ssid = wpa_s->current_ssid;
 626         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 627                 ssid->mode = WPAS_MODE_P2P_GO;
 628                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 629                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 630         }
 631
 632         persistent = 0;
 633         if (ssid) {
 634                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 635                 client = ssid->mode == WPAS_MODE_INFRA;
 636                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 637                         persistent = ssid->p2p_persistent_group;
 638                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
 639                                   ETH_ALEN);
 640                 } else
 641                         persistent = wpas_p2p_persistent_group(wpa_s,
 642                                                                go_dev_addr,
 643                                                                ssid->ssid,
 644                                                                ssid->ssid_len);
 645         } else {
 646                 ssid_txt = "";
 647                 client = wpa_s->p2p_group_interface ==
 648                         P2P_GROUP_INTERFACE_CLIENT;
 649                 os_memset(go_dev_addr, 0, ETH_ALEN);
 650         }
 651
 652         wpa_s->show_group_started = 0;
 653         if (client) {
 654                 /*
 655                  * Indicate event only after successfully completed 4-way
 656                  * handshake, i.e., when the interface is ready for data
 657                  * packets.
 658                  */
 659                 wpa_s->show_group_started = 1;
 660         } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
 661                 char psk[65];
 662                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
 663                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 664                         "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR
 665                         "%s",
 666                         wpa_s->ifname, ssid_txt, ssid->frequency, psk,
 667                         MAC2STR(go_dev_addr),
 668                         persistent ? " [PERSISTENT]" : "");
 669                 wpas_p2p_cross_connect_setup(wpa_s);
 670                 wpas_p2p_set_group_idle_timeout(wpa_s);
 671         } else {
 672                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 673                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 674                         "go_dev_addr=" MACSTR "%s",
 675                         wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0,
 676                         ssid && ssid->passphrase ? ssid->passphrase : "",
 677                         MAC2STR(go_dev_addr),
 678                         persistent ? " [PERSISTENT]" : "");
 679                 wpas_p2p_cross_connect_setup(wpa_s);
 680                 wpas_p2p_set_group_idle_timeout(wpa_s);
 681         }
 682
 683         if (persistent)
 684                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
 685                                                              ssid, go_dev_addr);
 686         if (network_id < 0 && ssid)
 687                 network_id = ssid->id;
 688         if (!client)
 689                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 690 }
 691
 692
 693 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
 694                                            unsigned int freq,
 695                                            const u8 *dst, const u8 *src,
 696                                            const u8 *bssid,
 697                                            const u8 *data, size_t data_len,
 698                                            enum offchannel_send_action_result
 699                                            result)
 700 {
 701         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
 702
 703         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
 704                 return;
 705         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
 706                 return;
 707
 708         switch (result) {
 709         case OFFCHANNEL_SEND_ACTION_SUCCESS:
 710                 res = P2P_SEND_ACTION_SUCCESS;
 711                 break;
 712         case OFFCHANNEL_SEND_ACTION_NO_ACK:
 713                 res = P2P_SEND_ACTION_NO_ACK;
 714                 break;
 715         case OFFCHANNEL_SEND_ACTION_FAILED:
 716                 res = P2P_SEND_ACTION_FAILED;
 717                 break;
 718         }
 719
 720         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
 721
 722         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
 723             wpa_s->pending_pd_before_join &&
 724             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
 725              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
 726                 wpa_s->pending_pd_before_join = 0;
 727                 if (wpa_s->p2p_fallback_to_go_neg) {
 728                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
 729                                 "during p2p_connect-auto");
 730                         wpas_p2p_fallback_to_go_neg(wpa_s, 0);
 731                         return;
 732                 }
 733
 734                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
 735                            "join-existing-group operation (no ACK for PD "
 736                            "Req)");
 737                 wpas_p2p_join_start(wpa_s);
 738         }
 739 }
 740
 741
 742 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
 743                             const u8 *src, const u8 *bssid, const u8 *buf,
 744                             size_t len, unsigned int wait_time)
 745 {
 746         struct wpa_supplicant *wpa_s = ctx;
 747         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
 748                                       wait_time,
 749                                       wpas_p2p_send_action_tx_status, 1);
 750 }
 751
 752
 753 static void wpas_send_action_done(void *ctx)
 754 {
 755         struct wpa_supplicant *wpa_s = ctx;
 756         offchannel_send_action_done(wpa_s);
 757 }
 758
 759
 760 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
 761                                     struct p2p_go_neg_results *params)
 762 {
 763         if (wpa_s->go_params == NULL) {
 764                 wpa_s->go_params = os_malloc(sizeof(*params));
 765                 if (wpa_s->go_params == NULL)
 766                         return -1;
 767         }
 768         os_memcpy(wpa_s->go_params, params, sizeof(*params));
 769         return 0;
 770 }
 771
 772
 773 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
 774                                     struct p2p_go_neg_results *res)
 775 {
 776         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR,
 777                    MAC2STR(res->peer_interface_addr));
 778         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
 779                           res->ssid, res->ssid_len);
 780         wpa_supplicant_ap_deinit(wpa_s);
 781         wpas_copy_go_neg_results(wpa_s, res);
 782         if (res->wps_method == WPS_PBC)
 783                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
 784         else {
 785                 u16 dev_pw_id = DEV_PW_DEFAULT;
 786                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
 787                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
 788                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
 789                                    wpa_s->p2p_pin, 1, dev_pw_id);
 790         }
 791 }
 792
 793
 794 static void p2p_go_configured(void *ctx, void *data)
 795 {
 796         struct wpa_supplicant *wpa_s = ctx;
 797         struct p2p_go_neg_results *params = data;
 798         struct wpa_ssid *ssid;
 799         int network_id = -1;
 800
 801         ssid = wpa_s->current_ssid;
 802         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
 803                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
 804                 if (wpa_s->global->p2p_group_formation == wpa_s)
 805                         wpa_s->global->p2p_group_formation = NULL;
 806                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 807                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 808                         "go_dev_addr=" MACSTR "%s",
 809                         wpa_s->ifname,
 810                         wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
 811                         ssid->frequency,
 812                         params->passphrase ? params->passphrase : "",
 813                         MAC2STR(wpa_s->global->p2p_dev_addr),
 814                         params->persistent_group ? " [PERSISTENT]" : "");
 815
 816                 if (params->persistent_group)
 817                         network_id = wpas_p2p_store_persistent_group(
 818                                 wpa_s->parent, ssid,
 819                                 wpa_s->global->p2p_dev_addr);
 820                 if (network_id < 0)
 821                         network_id = ssid->id;
 822                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 823                 wpas_p2p_cross_connect_setup(wpa_s);
 824                 wpas_p2p_set_group_idle_timeout(wpa_s);
 825                 return;
 826         }
 827
 828         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
 829         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
 830                                               params->peer_interface_addr)) {
 831                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
 832                            "filtering");
 833                 return;
 834         }
 835         if (params->wps_method == WPS_PBC)
 836                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
 837                                           params->peer_device_addr);
 838         else if (wpa_s->p2p_pin[0])
 839                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
 840                                           wpa_s->p2p_pin, NULL, 0, 0);
 841         os_free(wpa_s->go_params);
 842         wpa_s->go_params = NULL;
 843 }
 844
 845
 846 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
 847                               struct p2p_go_neg_results *params,
 848                               int group_formation)
 849 {
 850         struct wpa_ssid *ssid;
 851
 852         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
 853         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
 854                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
 855                         "results");
 856                 return;
 857         }
 858
 859         ssid = wpa_config_add_network(wpa_s->conf);
 860         if (ssid == NULL) {
 861                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
 862                 return;
 863         }
 864
 865         wpa_s->show_group_started = 0;
 866
 867         wpa_config_set_network_defaults(ssid);
 868         ssid->temporary = 1;
 869         ssid->p2p_group = 1;
 870         ssid->p2p_persistent_group = params->persistent_group;
 871         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
 872                 WPAS_MODE_P2P_GO;
 873         ssid->frequency = params->freq;
 874         ssid->ht40 = params->ht40;
 875         ssid->ssid = os_zalloc(params->ssid_len + 1);
 876         if (ssid->ssid) {
 877                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
 878                 ssid->ssid_len = params->ssid_len;
 879         }
 880         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 881         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 882         ssid->proto = WPA_PROTO_RSN;
 883         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 884         ssid->passphrase = os_strdup(params->passphrase);
 885         if (ssid->passphrase == NULL) {
 886                 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to copy passphrase for "
 887                         "GO");
 888                 wpa_config_remove_network(wpa_s->conf, ssid->id);
 889                 return;
 890         }
 891         wpa_config_update_psk(ssid);
 892         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
 893
 894         wpa_s->ap_configured_cb = p2p_go_configured;
 895         wpa_s->ap_configured_cb_ctx = wpa_s;
 896         wpa_s->ap_configured_cb_data = wpa_s->go_params;
 897         wpa_s->connect_without_scan = ssid;
 898         wpa_s->reassociate = 1;
 899         wpa_s->disconnected = 0;
 900         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
 901                 "start GO)");
 902         wpa_supplicant_req_scan(wpa_s, 0, 0);
 903 }
 904
 905
 906 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
 907                                   const struct wpa_supplicant *src)
 908 {
 909         struct wpa_config *d;
 910         const struct wpa_config *s;
 911
 912         d = dst->conf;
 913         s = src->conf;
 914
 915 #define C(n) if (s->n) d->n = os_strdup(s->n)
 916         C(device_name);
 917         C(manufacturer);
 918         C(model_name);
 919         C(model_number);
 920         C(serial_number);
 921         C(config_methods);
 922 #undef C
 923
 924         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
 925         os_memcpy(d->sec_device_type, s->sec_device_type,
 926                   sizeof(d->sec_device_type));
 927         d->num_sec_device_types = s->num_sec_device_types;
 928
 929         d->p2p_group_idle = s->p2p_group_idle;
 930         d->p2p_intra_bss = s->p2p_intra_bss;
 931         d->persistent_reconnect = s->persistent_reconnect;
 932         d->max_num_sta = s->max_num_sta;
 933         d->pbc_in_m1 = s->pbc_in_m1;
 934 }
 935
 936
 937 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 938                                         enum wpa_driver_if_type type)
 939 {
 940         char ifname[120], force_ifname[120];
 941
 942         if (wpa_s->pending_interface_name[0]) {
 943                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
 944                            "- skip creation of a new one");
 945                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
 946                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
 947                                    "unknown?! ifname='%s'",
 948                                    wpa_s->pending_interface_name);
 949                         return -1;
 950                 }
 951                 return 0;
 952         }
 953
 954         os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname,
 955                     wpa_s->p2p_group_idx);
 956         if (os_strlen(ifname) >= IFNAMSIZ &&
 957             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
 958                 /* Try to avoid going over the IFNAMSIZ length limit */
 959                 os_snprintf(ifname, sizeof(ifname), "p2p-%d",
 960                             wpa_s->p2p_group_idx);
 961         }
 962         force_ifname[0] = '\0';
 963
 964         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
 965                    ifname);
 966         wpa_s->p2p_group_idx++;
 967
 968         wpa_s->pending_interface_type = type;
 969         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
 970                            wpa_s->pending_interface_addr, NULL) < 0) {
 971                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
 972                            "interface");
 973                 return -1;
 974         }
 975
 976         if (force_ifname[0]) {
 977                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
 978                            force_ifname);
 979                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
 980                            sizeof(wpa_s->pending_interface_name));
 981         } else
 982                 os_strlcpy(wpa_s->pending_interface_name, ifname,
 983                            sizeof(wpa_s->pending_interface_name));
 984         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
 985                    MACSTR, wpa_s->pending_interface_name,
 986                    MAC2STR(wpa_s->pending_interface_addr));
 987
 988         return 0;
 989 }
 990
 991
 992 static void wpas_p2p_remove_pending_group_interface(
 993         struct wpa_supplicant *wpa_s)
 994 {
 995         if (!wpa_s->pending_interface_name[0] ||
 996             is_zero_ether_addr(wpa_s->pending_interface_addr))
 997                 return; /* No pending virtual interface */
 998
 999         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1000                    wpa_s->pending_interface_name);
1001         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1002                           wpa_s->pending_interface_name);
1003         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1004         wpa_s->pending_interface_name[0] = '\0';
1005 }
1006
1007
1008 static struct wpa_supplicant *
1009 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1010 {
1011         struct wpa_interface iface;
1012         struct wpa_supplicant *group_wpa_s;
1013
1014         if (!wpa_s->pending_interface_name[0]) {
1015                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1016                 if (!wpas_p2p_create_iface(wpa_s))
1017                         return NULL;
1018                 /*
1019                  * Something has forced us to remove the pending interface; try
1020                  * to create a new one and hope for the best that we will get
1021                  * the same local address.
1022                  */
1023                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1024                                                  WPA_IF_P2P_CLIENT) < 0)
1025                         return NULL;
1026         }
1027
1028         os_memset(&iface, 0, sizeof(iface));
1029         iface.ifname = wpa_s->pending_interface_name;
1030         iface.driver = wpa_s->driver->name;
1031         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1032         iface.driver_param = wpa_s->conf->driver_param;
1033         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1034         if (group_wpa_s == NULL) {
1035                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1036                            "wpa_supplicant interface");
1037                 return NULL;
1038         }
1039         wpa_s->pending_interface_name[0] = '\0';
1040         group_wpa_s->parent = wpa_s;
1041         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1042                 P2P_GROUP_INTERFACE_CLIENT;
1043         wpa_s->global->p2p_group_formation = group_wpa_s;
1044
1045         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1046
1047         return group_wpa_s;
1048 }
1049
1050
1051 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1052                                              void *timeout_ctx)
1053 {
1054         struct wpa_supplicant *wpa_s = eloop_ctx;
1055         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1056         if (wpa_s->global->p2p)
1057                 p2p_group_formation_failed(wpa_s->global->p2p);
1058         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1059                 wpa_drv_p2p_group_formation_failed(wpa_s);
1060         wpas_group_formation_completed(wpa_s, 0);
1061 }
1062
1063
1064 void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1065 {
1066         struct wpa_supplicant *wpa_s = ctx;
1067
1068         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1069                 wpa_drv_cancel_remain_on_channel(wpa_s);
1070                 wpa_s->off_channel_freq = 0;
1071                 wpa_s->roc_waiting_drv_freq = 0;
1072         }
1073
1074         if (res->status) {
1075                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d",
1076                         res->status);
1077                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1078                 wpas_p2p_remove_pending_group_interface(wpa_s);
1079                 return;
1080         }
1081
1082         if (wpa_s->p2p_go_ht40)
1083                 res->ht40 = 1;
1084
1085         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS);
1086         wpas_notify_p2p_go_neg_completed(wpa_s, res);
1087
1088         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1089                 struct wpa_ssid *ssid;
1090                 ssid = wpa_config_get_network(wpa_s->conf,
1091                                               wpa_s->p2p_persistent_id);
1092                 if (ssid && ssid->disabled == 2 &&
1093                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1094                         size_t len = os_strlen(ssid->passphrase);
1095                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1096                                    "on requested persistent group");
1097                         os_memcpy(res->passphrase, ssid->passphrase, len);
1098                         res->passphrase[len] = '\0';
1099                 }
1100         }
1101
1102         if (wpa_s->create_p2p_iface) {
1103                 struct wpa_supplicant *group_wpa_s =
1104                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1105                 if (group_wpa_s == NULL) {
1106                         wpas_p2p_remove_pending_group_interface(wpa_s);
1107                         return;
1108                 }
1109                 if (group_wpa_s != wpa_s) {
1110                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1111                                   sizeof(group_wpa_s->p2p_pin));
1112                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1113                 }
1114                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1115                 wpa_s->pending_interface_name[0] = '\0';
1116                 group_wpa_s->p2p_in_provisioning = 1;
1117
1118                 if (res->role_go)
1119                         wpas_start_wps_go(group_wpa_s, res, 1);
1120                 else
1121                         wpas_start_wps_enrollee(group_wpa_s, res);
1122         } else {
1123                 wpa_s->p2p_in_provisioning = 1;
1124                 wpa_s->global->p2p_group_formation = wpa_s;
1125
1126                 if (res->role_go)
1127                         wpas_start_wps_go(wpa_s, res, 1);
1128                 else
1129                         wpas_start_wps_enrollee(ctx, res);
1130         }
1131
1132         wpa_s->p2p_long_listen = 0;
1133         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1134
1135         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1136         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1137                                (res->peer_config_timeout % 100) * 10000,
1138                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1139 }
1140
1141
1142 void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1143 {
1144         struct wpa_supplicant *wpa_s = ctx;
1145         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1146                 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1147
1148         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1149 }
1150
1151
1152 void wpas_dev_found(void *ctx, const u8 *addr,
1153                     const struct p2p_peer_info *info,
1154                     int new_device)
1155 {
1156 #ifndef CONFIG_NO_STDOUT_DEBUG
1157         struct wpa_supplicant *wpa_s = ctx;
1158         char devtype[WPS_DEV_TYPE_BUFSIZE];
1159
1160         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1161                 " p2p_dev_addr=" MACSTR
1162                 " pri_dev_type=%s name='%s' config_methods=0x%x "
1163                 "dev_capab=0x%x group_capab=0x%x",
1164                 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1165                 wps_dev_type_bin2str(info->pri_dev_type, devtype,
1166                                      sizeof(devtype)),
1167                 info->device_name, info->config_methods,
1168                 info->dev_capab, info->group_capab);
1169 #endif /* CONFIG_NO_STDOUT_DEBUG */
1170
1171         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1172 }
1173
1174
1175 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1176 {
1177         struct wpa_supplicant *wpa_s = ctx;
1178
1179         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1180                 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1181
1182         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1183 }
1184
1185
1186 static int wpas_start_listen(void *ctx, unsigned int freq,
1187                              unsigned int duration,
1188                              const struct wpabuf *probe_resp_ie)
1189 {
1190         struct wpa_supplicant *wpa_s = ctx;
1191
1192         wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL);
1193
1194         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1195                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1196                            "report received Probe Request frames");
1197                 return -1;
1198         }
1199
1200         wpa_s->pending_listen_freq = freq;
1201         wpa_s->pending_listen_duration = duration;
1202
1203         if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) {
1204                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1205                            "to remain on channel (%u MHz) for Listen "
1206                            "state", freq);
1207                 wpa_s->pending_listen_freq = 0;
1208                 return -1;
1209         }
1210         wpa_s->off_channel_freq = 0;
1211         wpa_s->roc_waiting_drv_freq = freq;
1212
1213         return 0;
1214 }
1215
1216
1217 static void wpas_stop_listen(void *ctx)
1218 {
1219         struct wpa_supplicant *wpa_s = ctx;
1220         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1221                 wpa_drv_cancel_remain_on_channel(wpa_s);
1222                 wpa_s->off_channel_freq = 0;
1223                 wpa_s->roc_waiting_drv_freq = 0;
1224         }
1225         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1226         wpa_drv_probe_req_report(wpa_s, 0);
1227 }
1228
1229
1230 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1231 {
1232         struct wpa_supplicant *wpa_s = ctx;
1233         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1234 }
1235
1236
1237 static struct p2p_srv_bonjour *
1238 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1239                              const struct wpabuf *query)
1240 {
1241         struct p2p_srv_bonjour *bsrv;
1242         size_t len;
1243
1244         len = wpabuf_len(query);
1245         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1246                          struct p2p_srv_bonjour, list) {
1247                 if (len == wpabuf_len(bsrv->query) &&
1248                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1249                               len) == 0)
1250                         return bsrv;
1251         }
1252         return NULL;
1253 }
1254
1255
1256 static struct p2p_srv_upnp *
1257 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
1258                           const char *service)
1259 {
1260         struct p2p_srv_upnp *usrv;
1261
1262         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1263                          struct p2p_srv_upnp, list) {
1264                 if (version == usrv->version &&
1265                     os_strcmp(service, usrv->service) == 0)
1266                         return usrv;
1267         }
1268         return NULL;
1269 }
1270
1271
1272 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
1273                                         u8 srv_trans_id)
1274 {
1275         u8 *len_pos;
1276
1277         if (wpabuf_tailroom(resp) < 5)
1278                 return;
1279
1280         /* Length (to be filled) */
1281         len_pos = wpabuf_put(resp, 2);
1282         wpabuf_put_u8(resp, srv_proto);
1283         wpabuf_put_u8(resp, srv_trans_id);
1284         /* Status Code */
1285         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
1286         /* Response Data: empty */
1287         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1288 }
1289
1290
1291 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
1292                                 struct wpabuf *resp, u8 srv_trans_id)
1293 {
1294         struct p2p_srv_bonjour *bsrv;
1295         u8 *len_pos;
1296
1297         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
1298
1299         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1300                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1301                 return;
1302         }
1303
1304         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1305                          struct p2p_srv_bonjour, list) {
1306                 if (wpabuf_tailroom(resp) <
1307                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
1308                         return;
1309                 /* Length (to be filled) */
1310                 len_pos = wpabuf_put(resp, 2);
1311                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1312                 wpabuf_put_u8(resp, srv_trans_id);
1313                 /* Status Code */
1314                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1315                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1316                                   wpabuf_head(bsrv->resp),
1317                                   wpabuf_len(bsrv->resp));
1318                 /* Response Data */
1319                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1320                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1321                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1322                              2);
1323         }
1324 }
1325
1326
1327 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
1328                                 struct wpabuf *resp, u8 srv_trans_id,
1329                                 const u8 *query, size_t query_len)
1330 {
1331         struct p2p_srv_bonjour *bsrv;
1332         u8 *len_pos;
1333         int matches = 0;
1334
1335         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
1336                           query, query_len);
1337         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1338                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1339                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
1340                                             srv_trans_id);
1341                 return;
1342         }
1343
1344         if (query_len == 0) {
1345                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1346                 return;
1347         }
1348
1349         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1350                          struct p2p_srv_bonjour, list) {
1351                 if (query_len != wpabuf_len(bsrv->query) ||
1352                     os_memcmp(query, wpabuf_head(bsrv->query), query_len) != 0)
1353                         continue;
1354
1355                 if (wpabuf_tailroom(resp) <
1356                     5 + query_len + wpabuf_len(bsrv->resp))
1357                         return;
1358
1359                 matches++;
1360
1361                 /* Length (to be filled) */
1362                 len_pos = wpabuf_put(resp, 2);
1363                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1364                 wpabuf_put_u8(resp, srv_trans_id);
1365
1366                 /* Status Code */
1367                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1368                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1369                                   wpabuf_head(bsrv->resp),
1370                                   wpabuf_len(bsrv->resp));
1371
1372                 /* Response Data */
1373                 wpabuf_put_data(resp, query, query_len); /* Key */
1374                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1375
1376                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1377         }
1378
1379         if (matches == 0) {
1380                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
1381                            "available");
1382                 if (wpabuf_tailroom(resp) < 5)
1383                         return;
1384
1385                 /* Length (to be filled) */
1386                 len_pos = wpabuf_put(resp, 2);
1387                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1388                 wpabuf_put_u8(resp, srv_trans_id);
1389
1390                 /* Status Code */
1391                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1392                 /* Response Data: empty */
1393                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1394                              2);
1395         }
1396 }
1397
1398
1399 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
1400                              struct wpabuf *resp, u8 srv_trans_id)
1401 {
1402         struct p2p_srv_upnp *usrv;
1403         u8 *len_pos;
1404
1405         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
1406
1407         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1408                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1409                 return;
1410         }
1411
1412         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1413                          struct p2p_srv_upnp, list) {
1414                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
1415                         return;
1416
1417                 /* Length (to be filled) */
1418                 len_pos = wpabuf_put(resp, 2);
1419                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
1420                 wpabuf_put_u8(resp, srv_trans_id);
1421
1422                 /* Status Code */
1423                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1424                 /* Response Data */
1425                 wpabuf_put_u8(resp, usrv->version);
1426                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1427                            usrv->service);
1428                 wpabuf_put_str(resp, usrv->service);
1429                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1430                              2);
1431         }
1432 }
1433
1434
1435 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
1436                              struct wpabuf *resp, u8 srv_trans_id,
1437                              const u8 *query, size_t query_len)
1438 {
1439         struct p2p_srv_upnp *usrv;
1440         u8 *len_pos;
1441         u8 version;
1442         char *str;
1443         int count = 0;
1444
1445         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
1446                           query, query_len);
1447
1448         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1449                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1450                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
1451                                             srv_trans_id);
1452                 return;
1453         }
1454
1455         if (query_len == 0) {
1456                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1457                 return;
1458         }
1459
1460         if (wpabuf_tailroom(resp) < 5)
1461                 return;
1462
1463         /* Length (to be filled) */
1464         len_pos = wpabuf_put(resp, 2);
1465         wpabuf_put_u8(resp, P2P_SERV_UPNP);
1466         wpabuf_put_u8(resp, srv_trans_id);
1467
1468         version = query[0];
1469         str = os_malloc(query_len);
1470         if (str == NULL)
1471                 return;
1472         os_memcpy(str, query + 1, query_len - 1);
1473         str[query_len - 1] = '\0';
1474
1475         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1476                          struct p2p_srv_upnp, list) {
1477                 if (version != usrv->version)
1478                         continue;
1479
1480                 if (os_strcmp(str, "ssdp:all") != 0 &&
1481                     os_strstr(usrv->service, str) == NULL)
1482                         continue;
1483
1484                 if (wpabuf_tailroom(resp) < 2)
1485                         break;
1486                 if (count == 0) {
1487                         /* Status Code */
1488                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1489                         /* Response Data */
1490                         wpabuf_put_u8(resp, version);
1491                 } else
1492                         wpabuf_put_u8(resp, ',');
1493
1494                 count++;
1495
1496                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1497                            usrv->service);
1498                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
1499                         break;
1500                 wpabuf_put_str(resp, usrv->service);
1501         }
1502         os_free(str);
1503
1504         if (count == 0) {
1505                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
1506                            "available");
1507                 /* Status Code */
1508                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1509                 /* Response Data: empty */
1510         }
1511
1512         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1513 }
1514
1515
1516 #ifdef CONFIG_WIFI_DISPLAY
1517 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
1518                             struct wpabuf *resp, u8 srv_trans_id,
1519                             const u8 *query, size_t query_len)
1520 {
1521         const u8 *pos;
1522         u8 role;
1523         u8 *len_pos;
1524
1525         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
1526
1527         if (!wpa_s->global->wifi_display) {
1528                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
1529                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
1530                                             srv_trans_id);
1531                 return;
1532         }
1533
1534         if (query_len < 1) {
1535                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
1536                            "Role");
1537                 return;
1538         }
1539
1540         if (wpabuf_tailroom(resp) < 5)
1541                 return;
1542
1543         pos = query;
1544         role = *pos++;
1545         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
1546
1547         /* TODO: role specific handling */
1548
1549         /* Length (to be filled) */
1550         len_pos = wpabuf_put(resp, 2);
1551         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
1552         wpabuf_put_u8(resp, srv_trans_id);
1553         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
1554
1555         while (pos < query + query_len) {
1556                 if (*pos < MAX_WFD_SUBELEMS &&
1557                     wpa_s->global->wfd_subelem[*pos] &&
1558                     wpabuf_tailroom(resp) >=
1559                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
1560                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
1561                                    "subelement %u", *pos);
1562                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
1563                 }
1564                 pos++;
1565         }
1566
1567         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1568 }
1569 #endif /* CONFIG_WIFI_DISPLAY */
1570
1571
1572 void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
1573                      u16 update_indic, const u8 *tlvs, size_t tlvs_len)
1574 {
1575         struct wpa_supplicant *wpa_s = ctx;
1576         const u8 *pos = tlvs;
1577         const u8 *end = tlvs + tlvs_len;
1578         const u8 *tlv_end;
1579         u16 slen;
1580         struct wpabuf *resp;
1581         u8 srv_proto, srv_trans_id;
1582         size_t buf_len;
1583         char *buf;
1584
1585         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
1586                     tlvs, tlvs_len);
1587         buf_len = 2 * tlvs_len + 1;
1588         buf = os_malloc(buf_len);
1589         if (buf) {
1590                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1591                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
1592                              MACSTR " %u %u %s",
1593                              freq, MAC2STR(sa), dialog_token, update_indic,
1594                              buf);
1595                 os_free(buf);
1596         }
1597
1598         if (wpa_s->p2p_sd_over_ctrl_iface) {
1599                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1600                                            update_indic, tlvs, tlvs_len);
1601                 return; /* to be processed by an external program */
1602         }
1603
1604         resp = wpabuf_alloc(10000);
1605         if (resp == NULL)
1606                 return;
1607
1608         while (pos + 1 < end) {
1609                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
1610                 slen = WPA_GET_LE16(pos);
1611                 pos += 2;
1612                 if (pos + slen > end || slen < 2) {
1613                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
1614                                    "length");
1615                         wpabuf_free(resp);
1616                         return;
1617                 }
1618                 tlv_end = pos + slen;
1619
1620                 srv_proto = *pos++;
1621                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1622                            srv_proto);
1623                 srv_trans_id = *pos++;
1624                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1625                            srv_trans_id);
1626
1627                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
1628                             pos, tlv_end - pos);
1629
1630
1631                 if (wpa_s->force_long_sd) {
1632                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
1633                                    "response");
1634                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1635                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1636                         goto done;
1637                 }
1638
1639                 switch (srv_proto) {
1640                 case P2P_SERV_ALL_SERVICES:
1641                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
1642                                    "for all services");
1643                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
1644                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1645                                 wpa_printf(MSG_DEBUG, "P2P: No service "
1646                                            "discovery protocols available");
1647                                 wpas_sd_add_proto_not_avail(
1648                                         resp, P2P_SERV_ALL_SERVICES,
1649                                         srv_trans_id);
1650                                 break;
1651                         }
1652                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1653                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1654                         break;
1655                 case P2P_SERV_BONJOUR:
1656                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
1657                                             pos, tlv_end - pos);
1658                         break;
1659                 case P2P_SERV_UPNP:
1660                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
1661                                          pos, tlv_end - pos);
1662                         break;
1663 #ifdef CONFIG_WIFI_DISPLAY
1664                 case P2P_SERV_WIFI_DISPLAY:
1665                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
1666                                         pos, tlv_end - pos);
1667                         break;
1668 #endif /* CONFIG_WIFI_DISPLAY */
1669                 default:
1670                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
1671                                    "protocol %u", srv_proto);
1672                         wpas_sd_add_proto_not_avail(resp, srv_proto,
1673                                                     srv_trans_id);
1674                         break;
1675                 }
1676
1677                 pos = tlv_end;
1678         }
1679
1680 done:
1681         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1682                                    update_indic, tlvs, tlvs_len);
1683
1684         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
1685
1686         wpabuf_free(resp);
1687 }
1688
1689
1690 void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
1691                       const u8 *tlvs, size_t tlvs_len)
1692 {
1693         struct wpa_supplicant *wpa_s = ctx;
1694         const u8 *pos = tlvs;
1695         const u8 *end = tlvs + tlvs_len;
1696         const u8 *tlv_end;
1697         u16 slen;
1698         size_t buf_len;
1699         char *buf;
1700
1701         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
1702                     tlvs, tlvs_len);
1703         if (tlvs_len > 1500) {
1704                 /* TODO: better way for handling this */
1705                 wpa_msg_ctrl(wpa_s, MSG_INFO,
1706                              P2P_EVENT_SERV_DISC_RESP MACSTR
1707                              " %u <long response: %u bytes>",
1708                              MAC2STR(sa), update_indic,
1709                              (unsigned int) tlvs_len);
1710         } else {
1711                 buf_len = 2 * tlvs_len + 1;
1712                 buf = os_malloc(buf_len);
1713                 if (buf) {
1714                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1715                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1716                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
1717                                      MAC2STR(sa), update_indic, buf);
1718                         os_free(buf);
1719                 }
1720         }
1721
1722         while (pos < end) {
1723                 u8 srv_proto, srv_trans_id, status;
1724
1725                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
1726                 slen = WPA_GET_LE16(pos);
1727                 pos += 2;
1728                 if (pos + slen > end || slen < 3) {
1729                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
1730                                    "length");
1731                         return;
1732                 }
1733                 tlv_end = pos + slen;
1734
1735                 srv_proto = *pos++;
1736                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1737                            srv_proto);
1738                 srv_trans_id = *pos++;
1739                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1740                            srv_trans_id);
1741                 status = *pos++;
1742                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
1743                            status);
1744
1745                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
1746                             pos, tlv_end - pos);
1747
1748                 pos = tlv_end;
1749         }
1750
1751         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
1752 }
1753
1754
1755 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
1756                         const struct wpabuf *tlvs)
1757 {
1758         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1759                 return wpa_drv_p2p_sd_request(wpa_s, dst, tlvs);
1760         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1761                 return 0;
1762         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
1763 }
1764
1765
1766 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
1767                              u8 version, const char *query)
1768 {
1769         struct wpabuf *tlvs;
1770         u64 ret;
1771
1772         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
1773         if (tlvs == NULL)
1774                 return 0;
1775         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
1776         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
1777         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
1778         wpabuf_put_u8(tlvs, version);
1779         wpabuf_put_str(tlvs, query);
1780         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
1781         wpabuf_free(tlvs);
1782         return ret;
1783 }
1784
1785
1786 #ifdef CONFIG_WIFI_DISPLAY
1787
1788 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
1789                                    const struct wpabuf *tlvs)
1790 {
1791         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1792                 return 0;
1793         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1794                 return 0;
1795         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
1796 }
1797
1798
1799 #define MAX_WFD_SD_SUBELEMS 20
1800
1801 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
1802                                 const char *subelems)
1803 {
1804         u8 *len;
1805         const char *pos;
1806         int val;
1807         int count = 0;
1808
1809         len = wpabuf_put(tlvs, 2);
1810         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
1811         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
1812
1813         wpabuf_put_u8(tlvs, role);
1814
1815         pos = subelems;
1816         while (*pos) {
1817                 val = atoi(pos);
1818                 if (val >= 0 && val < 256) {
1819                         wpabuf_put_u8(tlvs, val);
1820                         count++;
1821                         if (count == MAX_WFD_SD_SUBELEMS)
1822                                 break;
1823                 }
1824                 pos = os_strchr(pos + 1, ',');
1825                 if (pos == NULL)
1826                         break;
1827                 pos++;
1828         }
1829
1830         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
1831 }
1832
1833
1834 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
1835                                      const u8 *dst, const char *role)
1836 {
1837         struct wpabuf *tlvs;
1838         u64 ret;
1839         const char *subelems;
1840         u8 id = 1;
1841
1842         subelems = os_strchr(role, ' ');
1843         if (subelems == NULL)
1844                 return 0;
1845         subelems++;
1846
1847         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
1848         if (tlvs == NULL)
1849                 return 0;
1850
1851         if (os_strstr(role, "[source]"))
1852                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
1853         if (os_strstr(role, "[pri-sink]"))
1854                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
1855         if (os_strstr(role, "[sec-sink]"))
1856                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
1857         if (os_strstr(role, "[source+sink]"))
1858                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
1859
1860         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
1861         wpabuf_free(tlvs);
1862         return ret;
1863 }
1864
1865 #endif /* CONFIG_WIFI_DISPLAY */
1866
1867
1868 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
1869 {
1870         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1871                 return wpa_drv_p2p_sd_cancel_request(wpa_s, req);
1872         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1873                 return -1;
1874         return p2p_sd_cancel_request(wpa_s->global->p2p,
1875                                      (void *) (uintptr_t) req);
1876 }
1877
1878
1879 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
1880                           const u8 *dst, u8 dialog_token,
1881                           const struct wpabuf *resp_tlvs)
1882 {
1883         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
1884                 wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token,
1885                                         resp_tlvs);
1886                 return;
1887         }
1888         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1889                 return;
1890         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
1891                         resp_tlvs);
1892 }
1893
1894
1895 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
1896 {
1897         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
1898                 wpa_drv_p2p_service_update(wpa_s);
1899                 return;
1900         }
1901         if (wpa_s->global->p2p)
1902                 p2p_sd_service_update(wpa_s->global->p2p);
1903 }
1904
1905
1906 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
1907 {
1908         dl_list_del(&bsrv->list);
1909         wpabuf_free(bsrv->query);
1910         wpabuf_free(bsrv->resp);
1911         os_free(bsrv);
1912 }
1913
1914
1915 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
1916 {
1917         dl_list_del(&usrv->list);
1918         os_free(usrv->service);
1919         os_free(usrv);
1920 }
1921
1922
1923 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
1924 {
1925         struct p2p_srv_bonjour *bsrv, *bn;
1926         struct p2p_srv_upnp *usrv, *un;
1927
1928         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
1929                               struct p2p_srv_bonjour, list)
1930                 wpas_p2p_srv_bonjour_free(bsrv);
1931
1932         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
1933                               struct p2p_srv_upnp, list)
1934                 wpas_p2p_srv_upnp_free(usrv);
1935
1936         wpas_p2p_sd_service_update(wpa_s);
1937 }
1938
1939
1940 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
1941                                  struct wpabuf *query, struct wpabuf *resp)
1942 {
1943         struct p2p_srv_bonjour *bsrv;
1944
1945         bsrv = os_zalloc(sizeof(*bsrv));
1946         if (bsrv == NULL)
1947                 return -1;
1948         bsrv->query = query;
1949         bsrv->resp = resp;
1950         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
1951
1952         wpas_p2p_sd_service_update(wpa_s);
1953         return 0;
1954 }
1955
1956
1957 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
1958                                  const struct wpabuf *query)
1959 {
1960         struct p2p_srv_bonjour *bsrv;
1961
1962         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
1963         if (bsrv == NULL)
1964                 return -1;
1965         wpas_p2p_srv_bonjour_free(bsrv);
1966         wpas_p2p_sd_service_update(wpa_s);
1967         return 0;
1968 }
1969
1970
1971 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
1972                               const char *service)
1973 {
1974         struct p2p_srv_upnp *usrv;
1975
1976         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
1977                 return 0; /* Already listed */
1978         usrv = os_zalloc(sizeof(*usrv));
1979         if (usrv == NULL)
1980                 return -1;
1981         usrv->version = version;
1982         usrv->service = os_strdup(service);
1983         if (usrv->service == NULL) {
1984                 os_free(usrv);
1985                 return -1;
1986         }
1987         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
1988
1989         wpas_p2p_sd_service_update(wpa_s);
1990         return 0;
1991 }
1992
1993
1994 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
1995                               const char *service)
1996 {
1997         struct p2p_srv_upnp *usrv;
1998
1999         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2000         if (usrv == NULL)
2001                 return -1;
2002         wpas_p2p_srv_upnp_free(usrv);
2003         wpas_p2p_sd_service_update(wpa_s);
2004         return 0;
2005 }
2006
2007
2008 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2009                                          const u8 *peer, const char *params,
2010                                          unsigned int generated_pin)
2011 {
2012         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s",
2013                 MAC2STR(peer), generated_pin, params);
2014 }
2015
2016
2017 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2018                                         const u8 *peer, const char *params)
2019 {
2020         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s",
2021                 MAC2STR(peer), params);
2022 }
2023
2024
2025 void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2026                         const u8 *dev_addr, const u8 *pri_dev_type,
2027                         const char *dev_name, u16 supp_config_methods,
2028                         u8 dev_capab, u8 group_capab, const u8 *group_id,
2029                         size_t group_id_len)
2030 {
2031         struct wpa_supplicant *wpa_s = ctx;
2032         char devtype[WPS_DEV_TYPE_BUFSIZE];
2033         char params[300];
2034         u8 empty_dev_type[8];
2035         unsigned int generated_pin = 0;
2036         struct wpa_supplicant *group = NULL;
2037
2038         if (group_id) {
2039                 for (group = wpa_s->global->ifaces; group; group = group->next)
2040                 {
2041                         struct wpa_ssid *s = group->current_ssid;
2042                         if (s != NULL &&
2043                             s->mode == WPAS_MODE_P2P_GO &&
2044                             group_id_len - ETH_ALEN == s->ssid_len &&
2045                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2046                                       s->ssid_len) == 0)
2047                                 break;
2048                 }
2049         }
2050
2051         if (pri_dev_type == NULL) {
2052                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2053                 pri_dev_type = empty_dev_type;
2054         }
2055         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2056                     " pri_dev_type=%s name='%s' config_methods=0x%x "
2057                     "dev_capab=0x%x group_capab=0x%x%s%s",
2058                     MAC2STR(dev_addr),
2059                     wps_dev_type_bin2str(pri_dev_type, devtype,
2060                                          sizeof(devtype)),
2061                     dev_name, supp_config_methods, dev_capab, group_capab,
2062                     group ? " group=" : "",
2063                     group ? group->ifname : "");
2064         params[sizeof(params) - 1] = '\0';
2065
2066         if (config_methods & WPS_CONFIG_DISPLAY) {
2067                 generated_pin = wps_generate_pin();
2068                 wpas_prov_disc_local_display(wpa_s, peer, params,
2069                                              generated_pin);
2070         } else if (config_methods & WPS_CONFIG_KEYPAD)
2071                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2072         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2073                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR
2074                         "%s", MAC2STR(peer), params);
2075
2076         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2077                                             P2P_PROV_DISC_SUCCESS,
2078                                             config_methods, generated_pin);
2079 }
2080
2081
2082 void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2083 {
2084         struct wpa_supplicant *wpa_s = ctx;
2085         unsigned int generated_pin = 0;
2086         char params[20];
2087
2088         if (wpa_s->pending_pd_before_join &&
2089             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2090              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2091                 wpa_s->pending_pd_before_join = 0;
2092                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2093                            "join-existing-group operation");
2094                 wpas_p2p_join_start(wpa_s);
2095                 return;
2096         }
2097
2098         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2099             wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2100                 os_snprintf(params, sizeof(params), " peer_go=%d",
2101                             wpa_s->pending_pd_use == AUTO_PD_JOIN);
2102         else
2103                 params[0] = '\0';
2104
2105         if (config_methods & WPS_CONFIG_DISPLAY)
2106                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2107         else if (config_methods & WPS_CONFIG_KEYPAD) {
2108                 generated_pin = wps_generate_pin();
2109                 wpas_prov_disc_local_display(wpa_s, peer, params,
2110                                              generated_pin);
2111         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2112                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR
2113                         "%s", MAC2STR(peer), params);
2114
2115         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2116                                             P2P_PROV_DISC_SUCCESS,
2117                                             config_methods, generated_pin);
2118 }
2119
2120
2121 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2122                                 enum p2p_prov_disc_status status)
2123 {
2124         struct wpa_supplicant *wpa_s = ctx;
2125
2126         if (wpa_s->p2p_fallback_to_go_neg) {
2127                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2128                         "failed - fall back to GO Negotiation");
2129                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2130                 return;
2131         }
2132
2133         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2134                 " p2p_dev_addr=" MACSTR " status=%d",
2135                 MAC2STR(peer), status);
2136
2137         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2138                                             status, 0, 0);
2139 }
2140
2141
2142 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2143                                   const u8 *go_dev_addr, const u8 *ssid,
2144                                   size_t ssid_len, int *go, u8 *group_bssid,
2145                                   int *force_freq, int persistent_group)
2146 {
2147         struct wpa_supplicant *wpa_s = ctx;
2148         struct wpa_ssid *s;
2149         u8 cur_bssid[ETH_ALEN];
2150         int res;
2151         struct wpa_supplicant *grp;
2152
2153         if (!persistent_group) {
2154                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2155                            " to join an active group", MAC2STR(sa));
2156                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2157                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2158                      == 0 ||
2159                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2160                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2161                                    "authorized invitation");
2162                         goto accept_inv;
2163                 }
2164                 /*
2165                  * Do not accept the invitation automatically; notify user and
2166                  * request approval.
2167                  */
2168                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2169         }
2170
2171         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2172         if (grp) {
2173                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2174                            "running persistent group");
2175                 if (*go)
2176                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2177                 goto accept_inv;
2178         }
2179
2180         if (!wpa_s->conf->persistent_reconnect)
2181                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2182
2183         for (s = wpa_s->conf->ssid; s; s = s->next) {
2184                 if (s->disabled == 2 &&
2185                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2186                     s->ssid_len == ssid_len &&
2187                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2188                         break;
2189         }
2190
2191         if (!s) {
2192                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2193                            " requested reinvocation of an unknown group",
2194                            MAC2STR(sa));
2195                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2196         }
2197
2198         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2199                 *go = 1;
2200                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2201                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2202                                    "interface is already in use - reject "
2203                                    "invitation");
2204                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2205                 }
2206                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2207         } else if (s->mode == WPAS_MODE_P2P_GO) {
2208                 *go = 1;
2209                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2210                 {
2211                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2212                                    "interface address for the group");
2213                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2214                 }
2215                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2216                           ETH_ALEN);
2217         }
2218
2219 accept_inv:
2220         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 &&
2221             wpa_s->assoc_freq) {
2222                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2223                            "the channel we are already using");
2224                 *force_freq = wpa_s->assoc_freq;
2225         }
2226
2227         res = wpa_drv_shared_freq(wpa_s);
2228         if (res > 0) {
2229                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2230                            "with the channel we are already using on a "
2231                            "shared interface");
2232                 *force_freq = res;
2233         }
2234
2235         return P2P_SC_SUCCESS;
2236 }
2237
2238
2239 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2240                                      const u8 *ssid, size_t ssid_len,
2241                                      const u8 *go_dev_addr, u8 status,
2242                                      int op_freq)
2243 {
2244         struct wpa_supplicant *wpa_s = ctx;
2245         struct wpa_ssid *s;
2246
2247         for (s = wpa_s->conf->ssid; s; s = s->next) {
2248                 if (s->disabled == 2 &&
2249                     s->ssid_len == ssid_len &&
2250                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2251                         break;
2252         }
2253
2254         if (status == P2P_SC_SUCCESS) {
2255                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2256                            " was accepted; op_freq=%d MHz",
2257                            MAC2STR(sa), op_freq);
2258                 if (s) {
2259                         int go = s->mode == WPAS_MODE_P2P_GO;
2260                         wpas_p2p_group_add_persistent(
2261                                 wpa_s, s, go, go ? op_freq : 0, 0);
2262                 } else if (bssid) {
2263                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2264                                       wpa_s->p2p_wps_method, 0);
2265                 }
2266                 return;
2267         }
2268
2269         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2270                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2271                            " was rejected (status %u)", MAC2STR(sa), status);
2272                 return;
2273         }
2274
2275         if (!s) {
2276                 if (bssid) {
2277                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2278                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2279                                 " bssid=" MACSTR " unknown-network",
2280                                 MAC2STR(sa), MAC2STR(go_dev_addr),
2281                                 MAC2STR(bssid));
2282                 } else {
2283                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2284                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2285                                 " unknown-network",
2286                                 MAC2STR(sa), MAC2STR(go_dev_addr));
2287                 }
2288                 return;
2289         }
2290
2291         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR
2292                 " persistent=%d", MAC2STR(sa), s->id);
2293 }
2294
2295
2296 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid)
2297 {
2298         struct wpa_supplicant *wpa_s = ctx;
2299         struct wpa_ssid *ssid;
2300
2301         if (bssid) {
2302                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2303                         "status=%d " MACSTR,
2304                         status, MAC2STR(bssid));
2305         } else {
2306                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2307                         "status=%d ", status);
2308         }
2309         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2310
2311         if (wpa_s->pending_invite_ssid_id == -1)
2312                 return; /* Invitation to active group */
2313
2314         if (status != P2P_SC_SUCCESS) {
2315                 wpas_p2p_remove_pending_group_interface(wpa_s);
2316                 return;
2317         }
2318
2319         ssid = wpa_config_get_network(wpa_s->conf,
2320                                       wpa_s->pending_invite_ssid_id);
2321         if (ssid == NULL) {
2322                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2323                            "data matching with invitation");
2324                 return;
2325         }
2326
2327         /*
2328          * The peer could have missed our ctrl::ack frame for Invitation
2329          * Response and continue retransmitting the frame. To reduce the
2330          * likelihood of the peer not getting successful TX status for the
2331          * Invitation Response frame, wait a short time here before starting
2332          * the persistent group so that we will remain on the current channel to
2333          * acknowledge any possible retransmission from the peer.
2334          */
2335         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
2336                 "starting persistent group");
2337         os_sleep(0, 50000);
2338
2339         wpas_p2p_group_add_persistent(wpa_s, ssid,
2340                                       ssid->mode == WPAS_MODE_P2P_GO,
2341                                       wpa_s->p2p_persistent_go_freq,
2342                                       wpa_s->p2p_go_ht40);
2343 }
2344
2345
2346 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
2347                                     unsigned int freq)
2348 {
2349         unsigned int i;
2350
2351         if (global->p2p_disallow_freq == NULL)
2352                 return 0;
2353
2354         for (i = 0; i < global->num_p2p_disallow_freq; i++) {
2355                 if (freq >= global->p2p_disallow_freq[i].min &&
2356                     freq <= global->p2p_disallow_freq[i].max)
2357                         return 1;
2358         }
2359
2360         return 0;
2361 }
2362
2363
2364 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
2365 {
2366         reg->channel[reg->channels] = chan;
2367         reg->channels++;
2368 }
2369
2370
2371 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
2372                                      struct p2p_channels *chan)
2373 {
2374         int i, cla = 0;
2375
2376         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
2377                    "band");
2378
2379         /* Operating class 81 - 2.4 GHz band channels 1..13 */
2380         chan->reg_class[cla].reg_class = 81;
2381         chan->reg_class[cla].channels = 0;
2382         for (i = 0; i < 11; i++) {
2383                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
2384                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
2385         }
2386         if (chan->reg_class[cla].channels)
2387                 cla++;
2388
2389         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
2390                    "band");
2391
2392         /* Operating class 115 - 5 GHz, channels 36-48 */
2393         chan->reg_class[cla].reg_class = 115;
2394         chan->reg_class[cla].channels = 0;
2395         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
2396                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
2397         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
2398                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
2399         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
2400                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
2401         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
2402                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
2403         if (chan->reg_class[cla].channels)
2404                 cla++;
2405
2406         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
2407                    "band");
2408
2409         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
2410         chan->reg_class[cla].reg_class = 124;
2411         chan->reg_class[cla].channels = 0;
2412         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
2413                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
2414         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
2415                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
2416         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
2417                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
2418         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
2419                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
2420         if (chan->reg_class[cla].channels)
2421                 cla++;
2422
2423         chan->reg_classes = cla;
2424         return 0;
2425 }
2426
2427
2428 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
2429                                           u16 num_modes,
2430                                           enum hostapd_hw_mode mode)
2431 {
2432         u16 i;
2433
2434         for (i = 0; i < num_modes; i++) {
2435                 if (modes[i].mode == mode)
2436                         return &modes[i];
2437         }
2438
2439         return NULL;
2440 }
2441
2442
2443 static int has_channel(struct wpa_global *global,
2444                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
2445 {
2446         int i;
2447         unsigned int freq;
2448
2449         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
2450                 chan * 5;
2451         if (wpas_p2p_disallowed_freq(global, freq))
2452                 return 0;
2453
2454         for (i = 0; i < mode->num_channels; i++) {
2455                 if (mode->channels[i].chan == chan) {
2456                         if (flags)
2457                                 *flags = mode->channels[i].flag;
2458                         return !(mode->channels[i].flag &
2459                                  (HOSTAPD_CHAN_DISABLED |
2460                                   HOSTAPD_CHAN_PASSIVE_SCAN |
2461                                   HOSTAPD_CHAN_NO_IBSS |
2462                                   HOSTAPD_CHAN_RADAR));
2463                 }
2464         }
2465
2466         return 0;
2467 }
2468
2469
2470 struct p2p_oper_class_map {
2471         enum hostapd_hw_mode mode;
2472         u8 op_class;
2473         u8 min_chan;
2474         u8 max_chan;
2475         u8 inc;
2476         enum { BW20, BW40PLUS, BW40MINUS } bw;
2477 };
2478
2479 static struct p2p_oper_class_map op_class[] = {
2480         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
2481 #if 0 /* Do not enable HT40 on 2 GHz for now */
2482         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
2483         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
2484 #endif
2485         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
2486         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
2487         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
2488         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
2489         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
2490         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
2491         { -1, 0, 0, 0, 0, BW20 }
2492 };
2493
2494
2495 static int wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
2496                                    struct hostapd_hw_modes *mode,
2497                                    u8 channel, u8 bw)
2498 {
2499         int flag;
2500
2501         if (!has_channel(wpa_s->global, mode, channel, &flag))
2502                 return -1;
2503         if (bw == BW40MINUS &&
2504             (!(flag & HOSTAPD_CHAN_HT40MINUS) ||
2505              !has_channel(wpa_s->global, mode, channel - 4, NULL)))
2506                 return 0;
2507         if (bw == BW40PLUS &&
2508             (!(flag & HOSTAPD_CHAN_HT40PLUS) ||
2509              !has_channel(wpa_s->global, mode, channel + 4, NULL)))
2510                 return 0;
2511         return 1;
2512 }
2513
2514
2515 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
2516                                    struct p2p_channels *chan)
2517 {
2518         struct hostapd_hw_modes *mode;
2519         int cla, op;
2520
2521         if (wpa_s->hw.modes == NULL) {
2522                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
2523                            "of all supported channels; assume dualband "
2524                            "support");
2525                 return wpas_p2p_default_channels(wpa_s, chan);
2526         }
2527
2528         cla = 0;
2529
2530         for (op = 0; op_class[op].op_class; op++) {
2531                 struct p2p_oper_class_map *o = &op_class[op];
2532                 u8 ch;
2533                 struct p2p_reg_class *reg = NULL;
2534
2535                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
2536                 if (mode == NULL)
2537                         continue;
2538                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2539                         if (wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw) < 1)
2540                                 continue;
2541                         if (reg == NULL) {
2542                                 wpa_printf(MSG_DEBUG, "P2P: Add operating "
2543                                            "class %u", o->op_class);
2544                                 reg = &chan->reg_class[cla];
2545                                 cla++;
2546                                 reg->reg_class = o->op_class;
2547                         }
2548                         reg->channel[reg->channels] = ch;
2549                         reg->channels++;
2550                 }
2551                 if (reg) {
2552                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
2553                                     reg->channel, reg->channels);
2554                 }
2555         }
2556
2557         chan->reg_classes = cla;
2558
2559         return 0;
2560 }
2561
2562
2563 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
2564                            struct hostapd_hw_modes *mode, u8 channel)
2565 {
2566         int op, ret;
2567
2568         for (op = 0; op_class[op].op_class; op++) {
2569                 struct p2p_oper_class_map *o = &op_class[op];
2570                 u8 ch;
2571
2572                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2573                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
2574                             o->bw == BW20 || ch != channel)
2575                                 continue;
2576                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
2577                         if (ret < 0)
2578                                 continue;
2579                         else if (ret > 0)
2580                                 return (o->bw == BW40MINUS) ? -1 : 1;
2581                         else
2582                                 return 0;
2583                 }
2584         }
2585         return 0;
2586 }
2587
2588
2589 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
2590                         size_t buf_len)
2591 {
2592         struct wpa_supplicant *wpa_s = ctx;
2593
2594         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2595                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
2596                         break;
2597         }
2598         if (wpa_s == NULL)
2599                 return -1;
2600
2601         return wpa_drv_get_noa(wpa_s, buf, buf_len);
2602 }
2603
2604
2605 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
2606 {
2607         struct wpa_supplicant *wpa_s = ctx;
2608
2609         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2610                 struct wpa_ssid *ssid = wpa_s->current_ssid;
2611                 if (ssid == NULL)
2612                         continue;
2613                 if (ssid->mode != WPAS_MODE_INFRA)
2614                         continue;
2615                 if (wpa_s->wpa_state != WPA_COMPLETED &&
2616                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
2617                         continue;
2618                 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
2619                         return 1;
2620         }
2621
2622         return 0;
2623 }
2624
2625
2626 /**
2627  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
2628  * @global: Pointer to global data from wpa_supplicant_init()
2629  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2630  * Returns: 0 on success, -1 on failure
2631  */
2632 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
2633 {
2634         struct p2p_config p2p;
2635         unsigned int r;
2636         int i;
2637
2638         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
2639                 return 0;
2640
2641         if (global->p2p)
2642                 return 0;
2643
2644         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2645                 struct p2p_params params;
2646
2647                 wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management");
2648                 os_memset(&params, 0, sizeof(params));
2649                 params.dev_name = wpa_s->conf->device_name;
2650                 os_memcpy(params.pri_dev_type, wpa_s->conf->device_type,
2651                           WPS_DEV_TYPE_LEN);
2652                 params.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2653                 os_memcpy(params.sec_dev_type,
2654                           wpa_s->conf->sec_device_type,
2655                           params.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2656
2657                 if (wpa_drv_p2p_set_params(wpa_s, &params) < 0)
2658                         return -1;
2659
2660                 return 0;
2661         }
2662
2663         os_memset(&p2p, 0, sizeof(p2p));
2664         p2p.msg_ctx = wpa_s;
2665         p2p.cb_ctx = wpa_s;
2666         p2p.p2p_scan = wpas_p2p_scan;
2667         p2p.send_action = wpas_send_action;
2668         p2p.send_action_done = wpas_send_action_done;
2669         p2p.go_neg_completed = wpas_go_neg_completed;
2670         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
2671         p2p.dev_found = wpas_dev_found;
2672         p2p.dev_lost = wpas_dev_lost;
2673         p2p.start_listen = wpas_start_listen;
2674         p2p.stop_listen = wpas_stop_listen;
2675         p2p.send_probe_resp = wpas_send_probe_resp;
2676         p2p.sd_request = wpas_sd_request;
2677         p2p.sd_response = wpas_sd_response;
2678         p2p.prov_disc_req = wpas_prov_disc_req;
2679         p2p.prov_disc_resp = wpas_prov_disc_resp;
2680         p2p.prov_disc_fail = wpas_prov_disc_fail;
2681         p2p.invitation_process = wpas_invitation_process;
2682         p2p.invitation_received = wpas_invitation_received;
2683         p2p.invitation_result = wpas_invitation_result;
2684         p2p.get_noa = wpas_get_noa;
2685         p2p.go_connected = wpas_go_connected;
2686
2687         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
2688         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
2689         p2p.dev_name = wpa_s->conf->device_name;
2690         p2p.manufacturer = wpa_s->conf->manufacturer;
2691         p2p.model_name = wpa_s->conf->model_name;
2692         p2p.model_number = wpa_s->conf->model_number;
2693         p2p.serial_number = wpa_s->conf->serial_number;
2694         if (wpa_s->wps) {
2695                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
2696                 p2p.config_methods = wpa_s->wps->config_methods;
2697         }
2698
2699         if (wpa_s->conf->p2p_listen_reg_class &&
2700             wpa_s->conf->p2p_listen_channel) {
2701                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
2702                 p2p.channel = wpa_s->conf->p2p_listen_channel;
2703         } else {
2704                 p2p.reg_class = 81;
2705                 /*
2706                  * Pick one of the social channels randomly as the listen
2707                  * channel.
2708                  */
2709                 os_get_random((u8 *) &r, sizeof(r));
2710                 p2p.channel = 1 + (r % 3) * 5;
2711         }
2712         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
2713
2714         if (wpa_s->conf->p2p_oper_reg_class &&
2715             wpa_s->conf->p2p_oper_channel) {
2716                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
2717                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
2718                 p2p.cfg_op_channel = 1;
2719                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
2720                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2721
2722         } else {
2723                 p2p.op_reg_class = 81;
2724                 /*
2725                  * Use random operation channel from (1, 6, 11) if no other
2726                  * preference is indicated.
2727                  */
2728                 os_get_random((u8 *) &r, sizeof(r));
2729                 p2p.op_channel = 1 + (r % 3) * 5;
2730                 p2p.cfg_op_channel = 0;
2731                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
2732                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2733         }
2734         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
2735                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
2736                 p2p.country[2] = 0x04;
2737         } else
2738                 os_memcpy(p2p.country, "XX\x04", 3);
2739
2740         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) {
2741                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
2742                            "channel list");
2743                 return -1;
2744         }
2745
2746         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
2747                   WPS_DEV_TYPE_LEN);
2748
2749         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2750         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
2751                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2752
2753         p2p.concurrent_operations = !!(wpa_s->drv_flags &
2754                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
2755
2756         p2p.max_peers = 100;
2757
2758         if (wpa_s->conf->p2p_ssid_postfix) {
2759                 p2p.ssid_postfix_len =
2760                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
2761                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
2762                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
2763                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
2764                           p2p.ssid_postfix_len);
2765         }
2766
2767         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
2768
2769         p2p.max_listen = wpa_s->max_remain_on_chan;
2770
2771         global->p2p = p2p_init(&p2p);
2772         if (global->p2p == NULL)
2773                 return -1;
2774         global->p2p_init_wpa_s = wpa_s;
2775
2776         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
2777                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
2778                         continue;
2779                 p2p_add_wps_vendor_extension(
2780                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
2781         }
2782
2783         return 0;
2784 }
2785
2786
2787 /**
2788  * wpas_p2p_deinit - Deinitialize per-interface P2P data
2789  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2790  *
2791  * This function deinitialize per-interface P2P data.
2792  */
2793 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
2794 {
2795         if (wpa_s->driver && wpa_s->drv_priv)
2796                 wpa_drv_probe_req_report(wpa_s, 0);
2797
2798         if (wpa_s->go_params) {
2799                 /* Clear any stored provisioning info */
2800                 p2p_clear_provisioning_info(
2801                         wpa_s->global->p2p,
2802                         wpa_s->go_params->peer_device_addr);
2803         }
2804
2805         os_free(wpa_s->go_params);
2806         wpa_s->go_params = NULL;
2807         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2808         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2809         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
2810         wpa_s->p2p_long_listen = 0;
2811         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2812         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
2813         wpas_p2p_remove_pending_group_interface(wpa_s);
2814
2815         /* TODO: remove group interface from the driver if this wpa_s instance
2816          * is on top of a P2P group interface */
2817 }
2818
2819
2820 /**
2821  * wpas_p2p_deinit_global - Deinitialize global P2P module
2822  * @global: Pointer to global data from wpa_supplicant_init()
2823  *
2824  * This function deinitializes the global (per device) P2P module.
2825  */
2826 void wpas_p2p_deinit_global(struct wpa_global *global)
2827 {
2828         struct wpa_supplicant *wpa_s, *tmp;
2829
2830         wpa_s = global->ifaces;
2831         if (wpa_s)
2832                 wpas_p2p_service_flush(wpa_s);
2833
2834         if (global->p2p == NULL)
2835                 return;
2836
2837         /* Remove remaining P2P group interfaces */
2838         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
2839                 wpa_s = wpa_s->next;
2840         while (wpa_s) {
2841                 tmp = global->ifaces;
2842                 while (tmp &&
2843                        (tmp == wpa_s ||
2844                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
2845                         tmp = tmp->next;
2846                 }
2847                 if (tmp == NULL)
2848                         break;
2849                 /* Disconnect from the P2P group and deinit the interface */
2850                 wpas_p2p_disconnect(tmp);
2851         }
2852
2853         /*
2854          * Deinit GO data on any possibly remaining interface (if main
2855          * interface is used as GO).
2856          */
2857         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2858                 if (wpa_s->ap_iface)
2859                         wpas_p2p_group_deinit(wpa_s);
2860         }
2861
2862         p2p_deinit(global->p2p);
2863         global->p2p = NULL;
2864         global->p2p_init_wpa_s = NULL;
2865 }
2866
2867
2868 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
2869 {
2870         if (wpa_s->conf->p2p_no_group_iface)
2871                 return 0; /* separate interface disabled per configuration */
2872         if (wpa_s->drv_flags &
2873             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
2874              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
2875                 return 1; /* P2P group requires a new interface in every case
2876                            */
2877         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
2878                 return 0; /* driver does not support concurrent operations */
2879         if (wpa_s->global->ifaces->next)
2880                 return 1; /* more that one interface already in use */
2881         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2882                 return 1; /* this interface is already in use */
2883         return 0;
2884 }
2885
2886
2887 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
2888                                  const u8 *peer_addr,
2889                                  enum p2p_wps_method wps_method,
2890                                  int go_intent, const u8 *own_interface_addr,
2891                                  unsigned int force_freq, int persistent_group,
2892                                  struct wpa_ssid *ssid, unsigned int pref_freq)
2893 {
2894         if (persistent_group && wpa_s->conf->persistent_reconnect)
2895                 persistent_group = 2;
2896
2897         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2898                 return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method,
2899                                            go_intent, own_interface_addr,
2900                                            force_freq, persistent_group);
2901         }
2902
2903         /*
2904          * Increase GO config timeout if HT40 is used since it takes some time
2905          * to scan channels for coex purposes before the BSS can be started.
2906          */
2907         p2p_set_config_timeout(wpa_s->global->p2p,
2908                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
2909
2910         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
2911                            go_intent, own_interface_addr, force_freq,
2912                            persistent_group, ssid ? ssid->ssid : NULL,
2913                            ssid ? ssid->ssid_len : 0,
2914                            wpa_s->p2p_pd_before_go_neg, pref_freq);
2915 }
2916
2917
2918 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
2919                                 const u8 *peer_addr,
2920                                 enum p2p_wps_method wps_method,
2921                                 int go_intent, const u8 *own_interface_addr,
2922                                 unsigned int force_freq, int persistent_group,
2923                                 struct wpa_ssid *ssid, unsigned int pref_freq)
2924 {
2925         if (persistent_group && wpa_s->conf->persistent_reconnect)
2926                 persistent_group = 2;
2927
2928         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
2929                 return -1;
2930
2931         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
2932                              go_intent, own_interface_addr, force_freq,
2933                              persistent_group, ssid ? ssid->ssid : NULL,
2934                              ssid ? ssid->ssid_len : 0, pref_freq);
2935 }
2936
2937
2938 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
2939 {
2940         wpa_s->p2p_join_scan_count++;
2941         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
2942                    wpa_s->p2p_join_scan_count);
2943         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
2944                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
2945                            " for join operationg - stop join attempt",
2946                            MAC2STR(wpa_s->pending_join_iface_addr));
2947                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2948                 if (wpa_s->p2p_auto_pd) {
2949                         wpa_s->p2p_auto_pd = 0;
2950                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2951                                 " p2p_dev_addr=" MACSTR " status=N/A",
2952                                 MAC2STR(wpa_s->pending_join_dev_addr));
2953                         return;
2954                 }
2955                 wpa_msg(wpa_s->parent, MSG_INFO,
2956                         P2P_EVENT_GROUP_FORMATION_FAILURE);
2957         }
2958 }
2959
2960
2961 static void wpas_p2p_pd_before_join_timeout(void *eloop_ctx, void *timeout_ctx)
2962 {
2963         struct wpa_supplicant *wpa_s = eloop_ctx;
2964         if (!wpa_s->pending_pd_before_join)
2965                 return;
2966         wpa_s->pending_pd_before_join = 0;
2967         /*
2968          * Provision Discovery Response may have been lost - try to connect
2969          * anyway since we do not need any information from this PD.
2970          */
2971         wpa_printf(MSG_DEBUG, "P2P: PD timeout for join-existing-group - "
2972                    "try to connect anyway");
2973         wpas_p2p_join_start(wpa_s);
2974 }
2975
2976
2977 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
2978 {
2979         struct wpa_supplicant *iface;
2980         int shared_freq;
2981         u8 bssid[ETH_ALEN];
2982
2983         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)
2984                 return 0;
2985
2986         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
2987                 if (!wpas_p2p_create_iface(wpa_s) && iface == wpa_s)
2988                         continue;
2989                 if (iface->current_ssid == NULL || iface->assoc_freq == 0)
2990                         continue;
2991                 if (iface->current_ssid->mode == WPAS_MODE_AP ||
2992                     iface->current_ssid->mode == WPAS_MODE_P2P_GO)
2993                         shared_freq = iface->current_ssid->frequency;
2994                 else if (wpa_drv_get_bssid(iface, bssid) == 0)
2995                         shared_freq = iface->assoc_freq;
2996                 else
2997                         shared_freq = 0;
2998
2999                 if (shared_freq && freq != shared_freq) {
3000                         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - %s "
3001                                    "connected on %d MHz - new connection on "
3002                                    "%d MHz", iface->ifname, shared_freq, freq);
3003                         return 1;
3004                 }
3005         }
3006
3007         shared_freq = wpa_drv_shared_freq(wpa_s);
3008         if (shared_freq > 0 && shared_freq != freq) {
3009                 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - shared "
3010                            "virtual interface connected on %d MHz - new "
3011                            "connection on %d MHz", shared_freq, freq);
3012                 return 1;
3013         }
3014
3015         return 0;
3016 }
3017
3018
3019 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
3020                             const u8 *peer_dev_addr)
3021 {
3022         struct wpa_bss *bss;
3023         int updated;
3024
3025         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
3026         if (bss == NULL)
3027                 return -1;
3028         if (bss->last_update_idx < wpa_s->bss_update_idx) {
3029                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
3030                            "last scan");
3031                 return 0;
3032         }
3033
3034         updated = os_time_before(&wpa_s->p2p_auto_started, &bss->last_update);
3035         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
3036                    "%ld.%06ld (%supdated in last scan)",
3037                    bss->last_update.sec, bss->last_update.usec,
3038                    updated ? "": "not ");
3039
3040         return updated;
3041 }
3042
3043
3044 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
3045                                    struct wpa_scan_results *scan_res)
3046 {
3047         struct wpa_bss *bss;
3048         int freq;
3049         u8 iface_addr[ETH_ALEN];
3050
3051         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3052
3053         if (wpa_s->global->p2p_disabled)
3054                 return;
3055
3056         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
3057                    scan_res ? (int) scan_res->num : -1,
3058                    wpa_s->p2p_auto_join ? "auto_" : "");
3059
3060         if (scan_res)
3061                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
3062
3063         if (wpa_s->p2p_auto_pd) {
3064                 int join = wpas_p2p_peer_go(wpa_s,
3065                                             wpa_s->pending_join_dev_addr);
3066                 if (join == 0 &&
3067                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
3068                         wpa_s->auto_pd_scan_retry++;
3069                         bss = wpa_bss_get_bssid(wpa_s,
3070                                                 wpa_s->pending_join_dev_addr);
3071                         if (bss) {
3072                                 freq = bss->freq;
3073                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
3074                                            "the peer " MACSTR " at %d MHz",
3075                                            wpa_s->auto_pd_scan_retry,
3076                                            MAC2STR(wpa_s->
3077                                                    pending_join_dev_addr),
3078                                            freq);
3079                                 wpas_p2p_join_scan_req(wpa_s, freq);
3080                                 return;
3081                         }
3082                 }
3083
3084                 if (join < 0)
3085                         join = 0;
3086
3087                 wpa_s->p2p_auto_pd = 0;
3088                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
3089                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
3090                            MAC2STR(wpa_s->pending_join_dev_addr), join);
3091                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3092                                       wpa_s->pending_join_dev_addr,
3093                                       wpa_s->pending_pd_config_methods, join,
3094                                       0) < 0) {
3095                         wpa_s->p2p_auto_pd = 0;
3096                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3097                                 " p2p_dev_addr=" MACSTR " status=N/A",
3098                                 MAC2STR(wpa_s->pending_join_dev_addr));
3099                 }
3100                 return;
3101         }
3102
3103         if (wpa_s->p2p_auto_join) {
3104                 int join = wpas_p2p_peer_go(wpa_s,
3105                                             wpa_s->pending_join_dev_addr);
3106                 if (join < 0) {
3107                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
3108                                    "running a GO -> use GO Negotiation");
3109                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
3110                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
3111                                          wpa_s->p2p_persistent_group, 0, 0, 0,
3112                                          wpa_s->p2p_go_intent,
3113                                          wpa_s->p2p_connect_freq,
3114                                          wpa_s->p2p_persistent_id,
3115                                          wpa_s->p2p_pd_before_go_neg,
3116                                          wpa_s->p2p_go_ht40);
3117                         return;
3118                 }
3119
3120                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
3121                            "try to join the group", join ? "" :
3122                            " in older scan");
3123                 if (!join)
3124                         wpa_s->p2p_fallback_to_go_neg = 1;
3125         }
3126
3127         freq = p2p_get_oper_freq(wpa_s->global->p2p,
3128                                  wpa_s->pending_join_iface_addr);
3129         if (freq < 0 &&
3130             p2p_get_interface_addr(wpa_s->global->p2p,
3131                                    wpa_s->pending_join_dev_addr,
3132                                    iface_addr) == 0 &&
3133             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
3134         {
3135                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
3136                            "address for join from " MACSTR " to " MACSTR
3137                            " based on newly discovered P2P peer entry",
3138                            MAC2STR(wpa_s->pending_join_iface_addr),
3139                            MAC2STR(iface_addr));
3140                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
3141                           ETH_ALEN);
3142
3143                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
3144                                          wpa_s->pending_join_iface_addr);
3145         }
3146         if (freq >= 0) {
3147                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3148                            "from P2P peer table: %d MHz", freq);
3149         }
3150         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3151         if (bss) {
3152                 freq = bss->freq;
3153                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3154                            "from BSS table: %d MHz", freq);
3155         }
3156         if (freq > 0) {
3157                 u16 method;
3158
3159                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
3160                         wpa_msg(wpa_s->parent, MSG_INFO,
3161                                 P2P_EVENT_GROUP_FORMATION_FAILURE
3162                                 "reason=FREQ_CONFLICT");
3163                         return;
3164                 }
3165
3166                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
3167                            "prior to joining an existing group (GO " MACSTR
3168                            " freq=%u MHz)",
3169                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
3170                 wpa_s->pending_pd_before_join = 1;
3171
3172                 switch (wpa_s->pending_join_wps_method) {
3173                 case WPS_PIN_DISPLAY:
3174                         method = WPS_CONFIG_KEYPAD;
3175                         break;
3176                 case WPS_PIN_KEYPAD:
3177                         method = WPS_CONFIG_DISPLAY;
3178                         break;
3179                 case WPS_PBC:
3180                         method = WPS_CONFIG_PUSHBUTTON;
3181                         break;
3182                 default:
3183                         method = 0;
3184                         break;
3185                 }
3186
3187                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
3188                                                wpa_s->pending_join_dev_addr) ==
3189                      method)) {
3190                         /*
3191                          * We have already performed provision discovery for
3192                          * joining the group. Proceed directly to join
3193                          * operation without duplicated provision discovery. */
3194                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
3195                                    "with " MACSTR " already done - proceed to "
3196                                    "join",
3197                                    MAC2STR(wpa_s->pending_join_dev_addr));
3198                         wpa_s->pending_pd_before_join = 0;
3199                         goto start;
3200                 }
3201
3202                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3203                                       wpa_s->pending_join_dev_addr, method, 1,
3204                                       freq) < 0) {
3205                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
3206                                    "Discovery Request before joining an "
3207                                    "existing group");
3208                         wpa_s->pending_pd_before_join = 0;
3209                         goto start;
3210                 }
3211
3212                 /*
3213                  * Actual join operation will be started from the Action frame
3214                  * TX status callback (if no ACK is received) or when the
3215                  * Provision Discovery Response is received. Use a short
3216                  * timeout as a backup mechanism should the Provision Discovery
3217                  * Response be lost for any reason.
3218                  */
3219                 eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s,
3220                                      NULL);
3221                 eloop_register_timeout(2, 0, wpas_p2p_pd_before_join_timeout,
3222                                        wpa_s, NULL);
3223                 return;
3224         }
3225
3226         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
3227         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3228         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3229         wpas_p2p_check_join_scan_limit(wpa_s);
3230         return;
3231
3232 start:
3233         /* Start join operation immediately */
3234         wpas_p2p_join_start(wpa_s);
3235 }
3236
3237
3238 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq)
3239 {
3240         int ret;
3241         struct wpa_driver_scan_params params;
3242         struct wpabuf *wps_ie, *ies;
3243         size_t ielen;
3244         int freqs[2] = { 0, 0 };
3245
3246         os_memset(&params, 0, sizeof(params));
3247
3248         /* P2P Wildcard SSID */
3249         params.num_ssids = 1;
3250         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
3251         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
3252
3253         wpa_s->wps->dev.p2p = 1;
3254         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
3255                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
3256                                         NULL);
3257         if (wps_ie == NULL) {
3258                 wpas_p2p_scan_res_join(wpa_s, NULL);
3259                 return;
3260         }
3261
3262         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
3263         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
3264         if (ies == NULL) {
3265                 wpabuf_free(wps_ie);
3266                 wpas_p2p_scan_res_join(wpa_s, NULL);
3267                 return;
3268         }
3269         wpabuf_put_buf(ies, wps_ie);
3270         wpabuf_free(wps_ie);
3271
3272         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
3273
3274         params.p2p_probe = 1;
3275         params.extra_ies = wpabuf_head(ies);
3276         params.extra_ies_len = wpabuf_len(ies);
3277         if (freq > 0) {
3278                 freqs[0] = freq;
3279                 params.freqs = freqs;
3280         }
3281
3282         /*
3283          * Run a scan to update BSS table and start Provision Discovery once
3284          * the new scan results become available.
3285          */
3286         ret = wpa_drv_scan(wpa_s, &params);
3287         if (!ret)
3288                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
3289
3290         wpabuf_free(ies);
3291
3292         if (ret) {
3293                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
3294                            "try again later");
3295                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3296                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3297                 wpas_p2p_check_join_scan_limit(wpa_s);
3298         }
3299 }
3300
3301
3302 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
3303 {
3304         struct wpa_supplicant *wpa_s = eloop_ctx;
3305         wpas_p2p_join_scan_req(wpa_s, 0);
3306 }
3307
3308
3309 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
3310                          const u8 *dev_addr, enum p2p_wps_method wps_method,
3311                          int auto_join)
3312 {
3313         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
3314                    MACSTR " dev " MACSTR ")%s",
3315                    MAC2STR(iface_addr), MAC2STR(dev_addr),
3316                    auto_join ? " (auto_join)" : "");
3317
3318         wpa_s->p2p_auto_pd = 0;
3319         wpa_s->p2p_auto_join = !!auto_join;
3320         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
3321         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
3322         wpa_s->pending_join_wps_method = wps_method;
3323
3324         /* Make sure we are not running find during connection establishment */
3325         wpas_p2p_stop_find(wpa_s);
3326
3327         wpa_s->p2p_join_scan_count = 0;
3328         wpas_p2p_join_scan(wpa_s, NULL);
3329         return 0;
3330 }
3331
3332
3333 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
3334 {
3335         struct wpa_supplicant *group;
3336         struct p2p_go_neg_results res;
3337         struct wpa_bss *bss;
3338
3339         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
3340         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
3341         if (group == NULL)
3342                 return -1;
3343         if (group != wpa_s) {
3344                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
3345                           sizeof(group->p2p_pin));
3346                 group->p2p_wps_method = wpa_s->p2p_wps_method;
3347         }
3348
3349         group->p2p_in_provisioning = 1;
3350         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
3351
3352         os_memset(&res, 0, sizeof(res));
3353         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
3354                   ETH_ALEN);
3355         res.wps_method = wpa_s->pending_join_wps_method;
3356         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3357         if (bss) {
3358                 res.freq = bss->freq;
3359                 res.ssid_len = bss->ssid_len;
3360                 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
3361         }
3362
3363         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
3364                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
3365                            "starting client");
3366                 wpa_drv_cancel_remain_on_channel(wpa_s);
3367                 wpa_s->off_channel_freq = 0;
3368                 wpa_s->roc_waiting_drv_freq = 0;
3369         }
3370         wpas_start_wps_enrollee(group, &res);
3371
3372         /*
3373          * Allow a longer timeout for join-a-running-group than normal 15
3374          * second group formation timeout since the GO may not have authorized
3375          * our connection yet.
3376          */
3377         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3378         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
3379                                wpa_s, NULL);
3380
3381         return 0;
3382 }
3383
3384
3385 /**
3386  * wpas_p2p_connect - Request P2P Group Formation to be started
3387  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3388  * @peer_addr: Address of the peer P2P Device
3389  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
3390  * @persistent_group: Whether to create a persistent group
3391  * @auto_join: Whether to select join vs. GO Negotiation automatically
3392  * @join: Whether to join an existing group (as a client) instead of starting
3393  *      Group Owner negotiation; @peer_addr is BSSID in that case
3394  * @auth: Whether to only authorize the connection instead of doing that and
3395  *      initiating Group Owner negotiation
3396  * @go_intent: GO Intent or -1 to use default
3397  * @freq: Frequency for the group or 0 for auto-selection
3398  * @persistent_id: Persistent group credentials to use for forcing GO
3399  *      parameters or -1 to generate new values (SSID/passphrase)
3400  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
3401  *      interoperability workaround when initiating group formation
3402  * @ht40: Start GO with 40 MHz channel width
3403  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
3404  *      failure, -2 on failure due to channel not currently available,
3405  *      -3 if forced channel is not supported
3406  */
3407 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3408                      const char *pin, enum p2p_wps_method wps_method,
3409                      int persistent_group, int auto_join, int join, int auth,
3410                      int go_intent, int freq, int persistent_id, int pd,
3411                      int ht40)
3412 {
3413         int force_freq = 0, pref_freq = 0, oper_freq = 0;
3414         u8 bssid[ETH_ALEN];
3415         int ret = 0;
3416         enum wpa_driver_if_type iftype;
3417         const u8 *if_addr;
3418         struct wpa_ssid *ssid = NULL;
3419
3420         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3421                 return -1;
3422
3423         if (persistent_id >= 0) {
3424                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
3425                 if (ssid == NULL || ssid->disabled != 2 ||
3426                     ssid->mode != WPAS_MODE_P2P_GO)
3427                         return -1;
3428         }
3429
3430         if (go_intent < 0)
3431                 go_intent = wpa_s->conf->p2p_go_intent;
3432
3433         if (!auth)
3434                 wpa_s->p2p_long_listen = 0;
3435
3436         wpa_s->p2p_wps_method = wps_method;
3437         wpa_s->p2p_persistent_group = !!persistent_group;
3438         wpa_s->p2p_persistent_id = persistent_id;
3439         wpa_s->p2p_go_intent = go_intent;
3440         wpa_s->p2p_connect_freq = freq;
3441         wpa_s->p2p_fallback_to_go_neg = 0;
3442         wpa_s->p2p_pd_before_go_neg = !!pd;
3443         wpa_s->p2p_go_ht40 = !!ht40;
3444
3445         if (pin)
3446                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
3447         else if (wps_method == WPS_PIN_DISPLAY) {
3448                 ret = wps_generate_pin();
3449                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
3450                             ret);
3451                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
3452                            wpa_s->p2p_pin);
3453         } else
3454                 wpa_s->p2p_pin[0] = '\0';
3455
3456         if (join || auto_join) {
3457                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
3458                 if (auth) {
3459                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
3460                                    "connect a running group from " MACSTR,
3461                                    MAC2STR(peer_addr));
3462                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
3463                         return ret;
3464                 }
3465                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
3466                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
3467                                            iface_addr) < 0) {
3468                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
3469                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
3470                                          dev_addr);
3471                 }
3472                 if (auto_join) {
3473                         os_get_time(&wpa_s->p2p_auto_started);
3474                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
3475                                    "%ld.%06ld",
3476                                    wpa_s->p2p_auto_started.sec,
3477                                    wpa_s->p2p_auto_started.usec);
3478                 }
3479                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
3480                                   auto_join) < 0)
3481                         return -1;
3482                 return ret;
3483         }
3484
3485         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3486             wpa_s->assoc_freq)
3487                 oper_freq = wpa_s->assoc_freq;
3488         else {
3489                 oper_freq = wpa_drv_shared_freq(wpa_s);
3490                 if (oper_freq < 0)
3491                         oper_freq = 0;
3492         }
3493
3494         if (freq > 0) {
3495                 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3496                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
3497                                    "(%u MHz) is not supported for P2P uses",
3498                                    freq);
3499                         return -3;
3500                 }
3501
3502                 if (oper_freq > 0 && freq != oper_freq &&
3503                     !(wpa_s->drv_flags &
3504                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3505                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3506                                    "on %u MHz while connected on another "
3507                                    "channel (%u MHz)", freq, oper_freq);
3508                         return -2;
3509                 }
3510                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3511                            "requested channel (%u MHz)", freq);
3512                 force_freq = freq;
3513         } else if (oper_freq > 0 &&
3514                    !p2p_supported_freq(wpa_s->global->p2p, oper_freq)) {
3515                 if (!(wpa_s->drv_flags &
3516                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3517                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3518                                    "while connected on non-P2P supported "
3519                                    "channel (%u MHz)", oper_freq);
3520                         return -2;
3521                 }
3522                 wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
3523                            "(%u MHz) not available for P2P - try to use "
3524                            "another channel", oper_freq);
3525                 force_freq = 0;
3526         } else if (oper_freq > 0 &&
3527                    (wpa_s->drv_flags &
3528                     WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3529                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer the channel we "
3530                            "are already using (%u MHz) on another interface",
3531                            oper_freq);
3532                 pref_freq = oper_freq;
3533         } else if (oper_freq > 0) {
3534                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3535                            "channel we are already using (%u MHz) on another "
3536                            "interface", oper_freq);
3537                 force_freq = oper_freq;
3538         }
3539
3540         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
3541
3542         if (wpa_s->create_p2p_iface) {
3543                 /* Prepare to add a new interface for the group */
3544                 iftype = WPA_IF_P2P_GROUP;
3545                 if (go_intent == 15)
3546                         iftype = WPA_IF_P2P_GO;
3547                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
3548                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3549                                    "interface for the group");
3550                         return -1;
3551                 }
3552
3553                 if_addr = wpa_s->pending_interface_addr;
3554         } else
3555                 if_addr = wpa_s->own_addr;
3556
3557         if (auth) {
3558                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
3559                                          go_intent, if_addr,
3560                                          force_freq, persistent_group, ssid,
3561                                          pref_freq) < 0)
3562                         return -1;
3563                 return ret;
3564         }
3565
3566         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
3567                                   go_intent, if_addr, force_freq,
3568                                   persistent_group, ssid, pref_freq) < 0) {
3569                 if (wpa_s->create_p2p_iface)
3570                         wpas_p2p_remove_pending_group_interface(wpa_s);
3571                 return -1;
3572         }
3573         return ret;
3574 }
3575
3576
3577 /**
3578  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
3579  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3580  * @freq: Frequency of the channel in MHz
3581  * @duration: Duration of the stay on the channel in milliseconds
3582  *
3583  * This callback is called when the driver indicates that it has started the
3584  * requested remain-on-channel duration.
3585  */
3586 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3587                                    unsigned int freq, unsigned int duration)
3588 {
3589         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3590                 return;
3591         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
3592                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
3593                               wpa_s->pending_listen_duration);
3594                 wpa_s->pending_listen_freq = 0;
3595         }
3596 }
3597
3598
3599 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
3600                                  unsigned int timeout)
3601 {
3602         /* Limit maximum Listen state time based on driver limitation. */
3603         if (timeout > wpa_s->max_remain_on_chan)
3604                 timeout = wpa_s->max_remain_on_chan;
3605
3606         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3607                 return wpa_drv_p2p_listen(wpa_s, timeout);
3608
3609         return p2p_listen(wpa_s->global->p2p, timeout);
3610 }
3611
3612
3613 /**
3614  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
3615  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3616  * @freq: Frequency of the channel in MHz
3617  *
3618  * This callback is called when the driver indicates that a remain-on-channel
3619  * operation has been completed, i.e., the duration on the requested channel
3620  * has timed out.
3621  */
3622 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3623                                           unsigned int freq)
3624 {
3625         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
3626                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
3627                    wpa_s->p2p_long_listen, wpa_s->pending_action_tx);
3628         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3629                 return;
3630         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
3631                 return; /* P2P module started a new operation */
3632         if (wpa_s->pending_action_tx)
3633                 return;
3634         if (wpa_s->p2p_long_listen > 0)
3635                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
3636         if (wpa_s->p2p_long_listen > 0) {
3637                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
3638                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
3639         }
3640 }
3641
3642
3643 /**
3644  * wpas_p2p_group_remove - Remove a P2P group
3645  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3646  * @ifname: Network interface name of the group interface or "*" to remove all
3647  *      groups
3648  * Returns: 0 on success, -1 on failure
3649  *
3650  * This function is used to remove a P2P group. This can be used to disconnect
3651  * from a group in which the local end is a P2P Client or to end a P2P Group in
3652  * case the local end is the Group Owner. If a virtual network interface was
3653  * created for this group, that interface will be removed. Otherwise, only the
3654  * configured P2P group network will be removed from the interface.
3655  */
3656 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
3657 {
3658         struct wpa_global *global = wpa_s->global;
3659
3660         if (os_strcmp(ifname, "*") == 0) {
3661                 struct wpa_supplicant *prev;
3662                 wpa_s = global->ifaces;
3663                 while (wpa_s) {
3664                         prev = wpa_s;
3665                         wpa_s = wpa_s->next;
3666                         wpas_p2p_disconnect(prev);
3667                 }
3668                 return 0;
3669         }
3670
3671         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3672                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
3673                         break;
3674         }
3675
3676         return wpas_p2p_disconnect(wpa_s);
3677 }
3678
3679
3680 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
3681                                    struct p2p_go_neg_results *params,
3682                                    int freq, int ht40)
3683 {
3684         u8 bssid[ETH_ALEN];
3685         int res;
3686
3687         os_memset(params, 0, sizeof(*params));
3688         params->role_go = 1;
3689         params->ht40 = ht40;
3690         if (freq) {
3691                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
3692                            "frequency %d MHz", freq);
3693                 params->freq = freq;
3694         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
3695                    wpa_s->conf->p2p_oper_channel >= 1 &&
3696                    wpa_s->conf->p2p_oper_channel <= 11) {
3697                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
3698                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3699                            "frequency %d MHz", params->freq);
3700         } else if (wpa_s->conf->p2p_oper_reg_class == 115 ||
3701                    wpa_s->conf->p2p_oper_reg_class == 124) {
3702                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
3703                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3704                            "frequency %d MHz", params->freq);
3705         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3706                    wpa_s->best_overall_freq > 0 &&
3707                    p2p_supported_freq(wpa_s->global->p2p,
3708                                       wpa_s->best_overall_freq)) {
3709                 params->freq = wpa_s->best_overall_freq;
3710                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
3711                            "channel %d MHz", params->freq);
3712         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3713                    wpa_s->best_24_freq > 0 &&
3714                    p2p_supported_freq(wpa_s->global->p2p,
3715                                       wpa_s->best_24_freq)) {
3716                 params->freq = wpa_s->best_24_freq;
3717                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
3718                            "channel %d MHz", params->freq);
3719         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3720                    wpa_s->best_5_freq > 0 &&
3721                    p2p_supported_freq(wpa_s->global->p2p,
3722                                       wpa_s->best_5_freq)) {
3723                 params->freq = wpa_s->best_5_freq;
3724                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
3725                            "channel %d MHz", params->freq);
3726         } else {
3727                 int chan;
3728                 for (chan = 0; chan < 11; chan++) {
3729                         params->freq = 2412 + chan * 5;
3730                         if (!wpas_p2p_disallowed_freq(wpa_s->global,
3731                                                       params->freq))
3732                                 break;
3733                 }
3734                 if (chan == 11) {
3735                         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
3736                                    "allowed");
3737                         return -1;
3738                 }
3739                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
3740                            "known)", params->freq);
3741         }
3742
3743         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3744             wpa_s->assoc_freq && !freq) {
3745                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3746                            "already using");
3747                 params->freq = wpa_s->assoc_freq;
3748         }
3749
3750         res = wpa_drv_shared_freq(wpa_s);
3751         if (res > 0 && !freq) {
3752                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3753                            "already using on a shared interface");
3754                 params->freq = res;
3755         } else if (res > 0 && freq != res &&
3756                    !(wpa_s->drv_flags &
3757                      WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3758                 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz "
3759                            "while connected on another channel (%u MHz)",
3760                            freq, res);
3761                 return -1;
3762         }
3763
3764         return 0;
3765 }
3766
3767
3768 static struct wpa_supplicant *
3769 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
3770                          int go)
3771 {
3772         struct wpa_supplicant *group_wpa_s;
3773
3774         if (!wpas_p2p_create_iface(wpa_s)) {
3775                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
3776                         "operations");
3777                 return wpa_s;
3778         }
3779
3780         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
3781                                          WPA_IF_P2P_CLIENT) < 0) {
3782                 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to add group interface");
3783                 return NULL;
3784         }
3785         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
3786         if (group_wpa_s == NULL) {
3787                 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to initialize group "
3788                         "interface");
3789                 wpas_p2p_remove_pending_group_interface(wpa_s);
3790                 return NULL;
3791         }
3792
3793         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
3794                 group_wpa_s->ifname);
3795         return group_wpa_s;
3796 }
3797
3798
3799 /**
3800  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
3801  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3802  * @persistent_group: Whether to create a persistent group
3803  * @freq: Frequency for the group or 0 to indicate no hardcoding
3804  * Returns: 0 on success, -1 on failure
3805  *
3806  * This function creates a new P2P group with the local end as the Group Owner,
3807  * i.e., without using Group Owner Negotiation.
3808  */
3809 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
3810                        int freq, int ht40)
3811 {
3812         struct p2p_go_neg_results params;
3813         unsigned int r;
3814
3815         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3816                 return -1;
3817
3818         /* Make sure we are not running find during connection establishment */
3819         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
3820         wpas_p2p_stop_find(wpa_s);
3821
3822         if (freq == 2) {
3823                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
3824                            "band");
3825                 if (wpa_s->best_24_freq > 0 &&
3826                     p2p_supported_freq(wpa_s->global->p2p,
3827                                        wpa_s->best_24_freq)) {
3828                         freq = wpa_s->best_24_freq;
3829                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
3830                                    "channel: %d MHz", freq);
3831                 } else {
3832                         os_get_random((u8 *) &r, sizeof(r));
3833                         freq = 2412 + (r % 3) * 25;
3834                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
3835                                    "channel: %d MHz", freq);
3836                 }
3837         }
3838
3839         if (freq == 5) {
3840                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
3841                            "band");
3842                 if (wpa_s->best_5_freq > 0 &&
3843                     p2p_supported_freq(wpa_s->global->p2p,
3844                                        wpa_s->best_5_freq)) {
3845                         freq = wpa_s->best_5_freq;
3846                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
3847                                    "channel: %d MHz", freq);
3848                 } else {
3849                         os_get_random((u8 *) &r, sizeof(r));
3850                         freq = 5180 + (r % 4) * 20;
3851                         if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3852                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
3853                                            "5 GHz channel for P2P group");
3854                                 return -1;
3855                         }
3856                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
3857                                    "channel: %d MHz", freq);
3858                 }
3859         }
3860
3861         if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) {
3862                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
3863                            "(%u MHz) is not supported for P2P uses",
3864                            freq);
3865                 return -1;
3866         }
3867
3868         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
3869                 return -1;
3870         if (params.freq &&
3871             !p2p_supported_freq(wpa_s->global->p2p, params.freq)) {
3872                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
3873                            "(%u MHz) is not supported for P2P uses",
3874                            params.freq);
3875                 return -1;
3876         }
3877         p2p_go_params(wpa_s->global->p2p, &params);
3878         params.persistent_group = persistent_group;
3879
3880         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
3881         if (wpa_s == NULL)
3882                 return -1;
3883         wpas_start_wps_go(wpa_s, &params, 0);
3884
3885         return 0;
3886 }
3887
3888
3889 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
3890                                  struct wpa_ssid *params, int addr_allocated)
3891 {
3892         struct wpa_ssid *ssid;
3893
3894         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
3895         if (wpa_s == NULL)
3896                 return -1;
3897
3898         wpa_supplicant_ap_deinit(wpa_s);
3899
3900         ssid = wpa_config_add_network(wpa_s->conf);
3901         if (ssid == NULL)
3902                 return -1;
3903         wpa_config_set_network_defaults(ssid);
3904         ssid->temporary = 1;
3905         ssid->proto = WPA_PROTO_RSN;
3906         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
3907         ssid->group_cipher = WPA_CIPHER_CCMP;
3908         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
3909         ssid->ssid = os_malloc(params->ssid_len);
3910         if (ssid->ssid == NULL) {
3911                 wpa_config_remove_network(wpa_s->conf, ssid->id);
3912                 return -1;
3913         }
3914         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
3915         ssid->ssid_len = params->ssid_len;
3916         ssid->p2p_group = 1;
3917         ssid->export_keys = 1;
3918         if (params->psk_set) {
3919                 os_memcpy(ssid->psk, params->psk, 32);
3920                 ssid->psk_set = 1;
3921         }
3922         if (params->passphrase)
3923                 ssid->passphrase = os_strdup(params->passphrase);
3924
3925         wpa_supplicant_select_network(wpa_s, ssid);
3926
3927         wpa_s->show_group_started = 1;
3928
3929         return 0;
3930 }
3931
3932
3933 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
3934                                   struct wpa_ssid *ssid, int addr_allocated,
3935                                   int freq, int ht40)
3936 {
3937         struct p2p_go_neg_results params;
3938         int go = 0;
3939
3940         if (ssid->disabled != 2 || ssid->ssid == NULL)
3941                 return -1;
3942
3943         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
3944             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
3945                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
3946                            "already running");
3947                 return 0;
3948         }
3949
3950         /* Make sure we are not running find during connection establishment */
3951         wpas_p2p_stop_find(wpa_s);
3952
3953         wpa_s->p2p_fallback_to_go_neg = 0;
3954
3955         if (ssid->mode == WPAS_MODE_INFRA)
3956                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
3957
3958         if (ssid->mode != WPAS_MODE_P2P_GO)
3959                 return -1;
3960
3961         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
3962                 return -1;
3963
3964         params.role_go = 1;
3965         if (ssid->passphrase == NULL ||
3966             os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
3967                 wpa_printf(MSG_DEBUG, "P2P: Invalid passphrase in persistent "
3968                            "group");
3969                 return -1;
3970         }
3971         os_strlcpy(params.passphrase, ssid->passphrase,
3972                    sizeof(params.passphrase));
3973         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
3974         params.ssid_len = ssid->ssid_len;
3975         params.persistent_group = 1;
3976
3977         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
3978         if (wpa_s == NULL)
3979                 return -1;
3980
3981         wpas_start_wps_go(wpa_s, &params, 0);
3982
3983         return 0;
3984 }
3985
3986
3987 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
3988                                struct wpabuf *proberesp_ies)
3989 {
3990         struct wpa_supplicant *wpa_s = ctx;
3991         if (wpa_s->ap_iface) {
3992                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
3993                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
3994                         wpabuf_free(beacon_ies);
3995                         wpabuf_free(proberesp_ies);
3996                         return;
3997                 }
3998                 if (beacon_ies) {
3999                         wpabuf_free(hapd->p2p_beacon_ie);
4000                         hapd->p2p_beacon_ie = beacon_ies;
4001                 }
4002                 wpabuf_free(hapd->p2p_probe_resp_ie);
4003                 hapd->p2p_probe_resp_ie = proberesp_ies;
4004         } else {
4005                 wpabuf_free(beacon_ies);
4006                 wpabuf_free(proberesp_ies);
4007         }
4008         wpa_supplicant_ap_update_beacon(wpa_s);
4009 }
4010
4011
4012 static void wpas_p2p_idle_update(void *ctx, int idle)
4013 {
4014         struct wpa_supplicant *wpa_s = ctx;
4015         if (!wpa_s->ap_iface)
4016                 return;
4017         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
4018         if (idle)
4019                 wpas_p2p_set_group_idle_timeout(wpa_s);
4020         else
4021                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4022 }
4023
4024
4025 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
4026                                        struct wpa_ssid *ssid)
4027 {
4028         struct p2p_group *group;
4029         struct p2p_group_config *cfg;
4030
4031         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4032                 return NULL;
4033         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4034                 return NULL;
4035
4036         cfg = os_zalloc(sizeof(*cfg));
4037         if (cfg == NULL)
4038                 return NULL;
4039
4040         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
4041                 cfg->persistent_group = 2;
4042         else if (ssid->p2p_persistent_group)
4043                 cfg->persistent_group = 1;
4044         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
4045         if (wpa_s->max_stations &&
4046             wpa_s->max_stations < wpa_s->conf->max_num_sta)
4047                 cfg->max_clients = wpa_s->max_stations;
4048         else
4049                 cfg->max_clients = wpa_s->conf->max_num_sta;
4050         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
4051         cfg->ssid_len = ssid->ssid_len;
4052         cfg->cb_ctx = wpa_s;
4053         cfg->ie_update = wpas_p2p_ie_update;
4054         cfg->idle_update = wpas_p2p_idle_update;
4055
4056         group = p2p_group_init(wpa_s->global->p2p, cfg);
4057         if (group == NULL)
4058                 os_free(cfg);
4059         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
4060                 p2p_group_notif_formation_done(group);
4061         wpa_s->p2p_group = group;
4062         return group;
4063 }
4064
4065
4066 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4067                           int registrar)
4068 {
4069         struct wpa_ssid *ssid = wpa_s->current_ssid;
4070
4071         if (!wpa_s->p2p_in_provisioning) {
4072                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
4073                            "provisioning not in progress");
4074                 return;
4075         }
4076
4077         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4078                 u8 go_dev_addr[ETH_ALEN];
4079                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
4080                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4081                                           ssid->ssid_len);
4082                 /* Clear any stored provisioning info */
4083                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
4084         }
4085
4086         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
4087                              NULL);
4088         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4089                 /*
4090                  * Use a separate timeout for initial data connection to
4091                  * complete to allow the group to be removed automatically if
4092                  * something goes wrong in this step before the P2P group idle
4093                  * timeout mechanism is taken into use.
4094                  */
4095                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
4096                                        wpas_p2p_group_formation_timeout,
4097                                        wpa_s->parent, NULL);
4098         }
4099         if (wpa_s->global->p2p)
4100                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
4101         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4102                 wpa_drv_wps_success_cb(wpa_s, peer_addr);
4103         wpas_group_formation_completed(wpa_s, 1);
4104 }
4105
4106
4107 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
4108                          struct wps_event_fail *fail)
4109 {
4110         if (!wpa_s->p2p_in_provisioning) {
4111                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
4112                            "provisioning not in progress");
4113                 return;
4114         }
4115
4116         if (wpa_s->go_params) {
4117                 p2p_clear_provisioning_info(
4118                         wpa_s->global->p2p,
4119                         wpa_s->go_params->peer_device_addr);
4120         }
4121
4122         wpas_notify_p2p_wps_failed(wpa_s, fail);
4123 }
4124
4125
4126 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4127                        const char *config_method,
4128                        enum wpas_p2p_prov_disc_use use)
4129 {
4130         u16 config_methods;
4131
4132         wpa_s->p2p_fallback_to_go_neg = 0;
4133         wpa_s->pending_pd_use = NORMAL_PD;
4134         if (os_strncmp(config_method, "display", 7) == 0)
4135                 config_methods = WPS_CONFIG_DISPLAY;
4136         else if (os_strncmp(config_method, "keypad", 6) == 0)
4137                 config_methods = WPS_CONFIG_KEYPAD;
4138         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
4139                  os_strncmp(config_method, "pushbutton", 10) == 0)
4140                 config_methods = WPS_CONFIG_PUSHBUTTON;
4141         else {
4142                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
4143                 return -1;
4144         }
4145
4146         if (use == WPAS_P2P_PD_AUTO) {
4147                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
4148                 wpa_s->pending_pd_config_methods = config_methods;
4149                 wpa_s->p2p_auto_pd = 1;
4150                 wpa_s->p2p_auto_join = 0;
4151                 wpa_s->pending_pd_before_join = 0;
4152                 wpa_s->auto_pd_scan_retry = 0;
4153                 wpas_p2p_stop_find(wpa_s);
4154                 wpa_s->p2p_join_scan_count = 0;
4155                 os_get_time(&wpa_s->p2p_auto_started);
4156                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
4157                            wpa_s->p2p_auto_started.sec,
4158                            wpa_s->p2p_auto_started.usec);
4159                 wpas_p2p_join_scan(wpa_s, NULL);
4160                 return 0;
4161         }
4162
4163         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4164                 return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr,
4165                                                  config_methods,
4166                                                  use == WPAS_P2P_PD_FOR_JOIN);
4167         }
4168
4169         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
4170                 return -1;
4171
4172         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
4173                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
4174                                  0);
4175 }
4176
4177
4178 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
4179                               char *end)
4180 {
4181         return p2p_scan_result_text(ies, ies_len, buf, end);
4182 }
4183
4184
4185 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
4186 {
4187         if (!wpa_s->pending_action_tx)
4188                 return;
4189
4190         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
4191                    "operation request");
4192         wpabuf_free(wpa_s->pending_action_tx);
4193         wpa_s->pending_action_tx = NULL;
4194 }
4195
4196
4197 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
4198                   enum p2p_discovery_type type,
4199                   unsigned int num_req_dev_types, const u8 *req_dev_types,
4200                   const u8 *dev_id, unsigned int search_delay)
4201 {
4202         wpas_p2p_clear_pending_action_tx(wpa_s);
4203         wpa_s->p2p_long_listen = 0;
4204
4205         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4206                 return wpa_drv_p2p_find(wpa_s, timeout, type);
4207
4208         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
4209             wpa_s->p2p_in_provisioning)
4210                 return -1;
4211
4212         wpa_supplicant_cancel_sched_scan(wpa_s);
4213
4214         return p2p_find(wpa_s->global->p2p, timeout, type,
4215                         num_req_dev_types, req_dev_types, dev_id,
4216                         search_delay);
4217 }
4218
4219
4220 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
4221 {
4222         wpas_p2p_clear_pending_action_tx(wpa_s);
4223         wpa_s->p2p_long_listen = 0;
4224         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4225         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4226         wpa_s->global->p2p_cb_on_scan_complete = 0;
4227
4228         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4229                 wpa_drv_p2p_stop_find(wpa_s);
4230                 return;
4231         }
4232
4233         if (wpa_s->global->p2p)
4234                 p2p_stop_find(wpa_s->global->p2p);
4235
4236         wpas_p2p_remove_pending_group_interface(wpa_s);
4237 }
4238
4239
4240 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4241 {
4242         struct wpa_supplicant *wpa_s = eloop_ctx;
4243         wpa_s->p2p_long_listen = 0;
4244 }
4245
4246
4247 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
4248 {
4249         int res;
4250
4251         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4252                 return -1;
4253
4254         wpa_supplicant_cancel_sched_scan(wpa_s);
4255         wpas_p2p_clear_pending_action_tx(wpa_s);
4256
4257         if (timeout == 0) {
4258                 /*
4259                  * This is a request for unlimited Listen state. However, at
4260                  * least for now, this is mapped to a Listen state for one
4261                  * hour.
4262                  */
4263                 timeout = 3600;
4264         }
4265         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4266         wpa_s->p2p_long_listen = 0;
4267
4268         /*
4269          * Stop previous find/listen operation to avoid trying to request a new
4270          * remain-on-channel operation while the driver is still running the
4271          * previous one.
4272          */
4273         if (wpa_s->global->p2p)
4274                 p2p_stop_find(wpa_s->global->p2p);
4275
4276         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
4277         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
4278                 wpa_s->p2p_long_listen = timeout * 1000;
4279                 eloop_register_timeout(timeout, 0,
4280                                        wpas_p2p_long_listen_timeout,
4281                                        wpa_s, NULL);
4282         }
4283
4284         return res;
4285 }
4286
4287
4288 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
4289                           u8 *buf, size_t len, int p2p_group)
4290 {
4291         struct wpabuf *p2p_ie;
4292         int ret;
4293
4294         if (wpa_s->global->p2p_disabled)
4295                 return -1;
4296         if (wpa_s->global->p2p == NULL)
4297                 return -1;
4298         if (bss == NULL)
4299                 return -1;
4300
4301         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
4302         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
4303                                p2p_group, p2p_ie);
4304         wpabuf_free(p2p_ie);
4305
4306         return ret;
4307 }
4308
4309
4310 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
4311                           const u8 *dst, const u8 *bssid,
4312                           const u8 *ie, size_t ie_len, int ssi_signal)
4313 {
4314         if (wpa_s->global->p2p_disabled)
4315                 return 0;
4316         if (wpa_s->global->p2p == NULL)
4317                 return 0;
4318
4319         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
4320                                  ie, ie_len)) {
4321         case P2P_PREQ_NOT_P2P:
4322                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
4323                                  ssi_signal);
4324                 /* fall through */
4325         case P2P_PREQ_MALFORMED:
4326         case P2P_PREQ_NOT_LISTEN:
4327         case P2P_PREQ_NOT_PROCESSED:
4328         default: /* make gcc happy */
4329                 return 0;
4330         case P2P_PREQ_PROCESSED:
4331                 return 1;
4332         }
4333 }
4334
4335
4336 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
4337                         const u8 *sa, const u8 *bssid,
4338                         u8 category, const u8 *data, size_t len, int freq)
4339 {
4340         if (wpa_s->global->p2p_disabled)
4341                 return;
4342         if (wpa_s->global->p2p == NULL)
4343                 return;
4344
4345         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
4346                       freq);
4347 }
4348
4349
4350 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
4351 {
4352         if (wpa_s->global->p2p_disabled)
4353                 return;
4354         if (wpa_s->global->p2p == NULL)
4355                 return;
4356
4357         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4358 }
4359
4360
4361 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
4362 {
4363         p2p_group_deinit(wpa_s->p2p_group);
4364         wpa_s->p2p_group = NULL;
4365
4366         wpa_s->ap_configured_cb = NULL;
4367         wpa_s->ap_configured_cb_ctx = NULL;
4368         wpa_s->ap_configured_cb_data = NULL;
4369         wpa_s->connect_without_scan = NULL;
4370 }
4371
4372
4373 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
4374 {
4375         wpa_s->p2p_long_listen = 0;
4376
4377         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4378                 return wpa_drv_p2p_reject(wpa_s, addr);
4379
4380         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4381                 return -1;
4382
4383         return p2p_reject(wpa_s->global->p2p, addr);
4384 }
4385
4386
4387 /* Invite to reinvoke a persistent group */
4388 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4389                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
4390                     int ht40)
4391 {
4392         enum p2p_invite_role role;
4393         u8 *bssid = NULL;
4394
4395         wpa_s->p2p_persistent_go_freq = freq;
4396         wpa_s->p2p_go_ht40 = !!ht40;
4397         if (ssid->mode == WPAS_MODE_P2P_GO) {
4398                 role = P2P_INVITE_ROLE_GO;
4399                 if (peer_addr == NULL) {
4400                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
4401                                    "address in invitation command");
4402                         return -1;
4403                 }
4404                 if (wpas_p2p_create_iface(wpa_s)) {
4405                         if (wpas_p2p_add_group_interface(wpa_s,
4406                                                          WPA_IF_P2P_GO) < 0) {
4407                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
4408                                            "allocate a new interface for the "
4409                                            "group");
4410                                 return -1;
4411                         }
4412                         bssid = wpa_s->pending_interface_addr;
4413                 } else
4414                         bssid = wpa_s->own_addr;
4415         } else {
4416                 role = P2P_INVITE_ROLE_CLIENT;
4417                 peer_addr = ssid->bssid;
4418         }
4419         wpa_s->pending_invite_ssid_id = ssid->id;
4420
4421         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4422                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4423                                           ssid->ssid, ssid->ssid_len,
4424                                           go_dev_addr, 1);
4425
4426         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4427                 return -1;
4428
4429         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4430                           ssid->ssid, ssid->ssid_len, freq, go_dev_addr, 1);
4431 }
4432
4433
4434 /* Invite to join an active group */
4435 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
4436                           const u8 *peer_addr, const u8 *go_dev_addr)
4437 {
4438         struct wpa_global *global = wpa_s->global;
4439         enum p2p_invite_role role;
4440         u8 *bssid = NULL;
4441         struct wpa_ssid *ssid;
4442         int persistent;
4443
4444         wpa_s->p2p_persistent_go_freq = 0;
4445         wpa_s->p2p_go_ht40 = 0;
4446
4447         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4448                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4449                         break;
4450         }
4451         if (wpa_s == NULL) {
4452                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
4453                 return -1;
4454         }
4455
4456         ssid = wpa_s->current_ssid;
4457         if (ssid == NULL) {
4458                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
4459                            "invitation");
4460                 return -1;
4461         }
4462
4463         persistent = ssid->p2p_persistent_group &&
4464                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
4465                                         ssid->ssid, ssid->ssid_len);
4466
4467         if (ssid->mode == WPAS_MODE_P2P_GO) {
4468                 role = P2P_INVITE_ROLE_ACTIVE_GO;
4469                 bssid = wpa_s->own_addr;
4470                 if (go_dev_addr == NULL)
4471                         go_dev_addr = wpa_s->global->p2p_dev_addr;
4472         } else {
4473                 role = P2P_INVITE_ROLE_CLIENT;
4474                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
4475                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
4476                                    "invite to current group");
4477                         return -1;
4478                 }
4479                 bssid = wpa_s->bssid;
4480                 if (go_dev_addr == NULL &&
4481                     !is_zero_ether_addr(wpa_s->go_dev_addr))
4482                         go_dev_addr = wpa_s->go_dev_addr;
4483         }
4484         wpa_s->parent->pending_invite_ssid_id = -1;
4485
4486         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4487                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4488                                           ssid->ssid, ssid->ssid_len,
4489                                           go_dev_addr, persistent);
4490
4491         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4492                 return -1;
4493
4494         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4495                           ssid->ssid, ssid->ssid_len, wpa_s->assoc_freq,
4496                           go_dev_addr, persistent);
4497 }
4498
4499
4500 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
4501 {
4502         struct wpa_ssid *ssid = wpa_s->current_ssid;
4503         const char *ssid_txt;
4504         u8 go_dev_addr[ETH_ALEN];
4505         int network_id = -1;
4506         int persistent;
4507         int freq;
4508
4509         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
4510                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
4511                                      wpa_s->parent, NULL);
4512         }
4513
4514         if (!wpa_s->show_group_started || !ssid)
4515                 goto done;
4516
4517         wpa_s->show_group_started = 0;
4518
4519         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
4520         os_memset(go_dev_addr, 0, ETH_ALEN);
4521         if (ssid->bssid_set)
4522                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
4523         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4524                                                ssid->ssid_len);
4525         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
4526
4527         if (wpa_s->global->p2p_group_formation == wpa_s)
4528                 wpa_s->global->p2p_group_formation = NULL;
4529
4530         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
4531                 (int) wpa_s->assoc_freq;
4532         if (ssid->passphrase == NULL && ssid->psk_set) {
4533                 char psk[65];
4534                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
4535                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4536                         "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr="
4537                         MACSTR "%s",
4538                         wpa_s->ifname, ssid_txt, freq, psk,
4539                         MAC2STR(go_dev_addr),
4540                         persistent ? " [PERSISTENT]" : "");
4541         } else {
4542                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4543                         "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" "
4544                         "go_dev_addr=" MACSTR "%s",
4545                         wpa_s->ifname, ssid_txt, freq,
4546                         ssid->passphrase ? ssid->passphrase : "",
4547                         MAC2STR(go_dev_addr),
4548                         persistent ? " [PERSISTENT]" : "");
4549         }
4550
4551         if (persistent)
4552                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
4553                                                              ssid, go_dev_addr);
4554         if (network_id < 0)
4555                 network_id = ssid->id;
4556         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
4557
4558 done:
4559         if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
4560             wpa_s->global->p2p != NULL) {
4561                 wpa_s->global->p2p_cb_on_scan_complete = 0;
4562                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
4563                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
4564                                 "continued after successful connection");
4565                         p2p_increase_search_delay(
4566                                 wpa_s->global->p2p,
4567                                 wpas_p2p_search_delay(wpa_s));
4568                 }
4569         }
4570 }
4571
4572
4573 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
4574                           u32 interval1, u32 duration2, u32 interval2)
4575 {
4576         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4577                 return -1;
4578         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4579                 return -1;
4580
4581         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
4582             wpa_s->current_ssid == NULL ||
4583             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
4584                 return -1;
4585
4586         return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
4587                                 wpa_s->own_addr, wpa_s->assoc_freq,
4588                                 duration1, interval1, duration2, interval2);
4589 }
4590
4591
4592 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
4593                         unsigned int interval)
4594 {
4595         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4596                 return -1;
4597
4598         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4599                 return -1;
4600
4601         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
4602 }
4603
4604
4605 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
4606 {
4607         if (wpa_s->current_ssid == NULL) {
4608                 /*
4609                  * current_ssid can be clearead when P2P client interface gets
4610                  * disconnected, so assume this interface was used as P2P
4611                  * client.
4612                  */
4613                 return 1;
4614         }
4615         return wpa_s->current_ssid->p2p_group &&
4616                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
4617 }
4618
4619
4620 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
4621 {
4622         struct wpa_supplicant *wpa_s = eloop_ctx;
4623
4624         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
4625                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
4626                            "disabled");
4627                 return;
4628         }
4629
4630         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
4631                    "group");
4632         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
4633 }
4634
4635
4636 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
4637 {
4638         int timeout;
4639
4640         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
4641                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
4642
4643         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
4644                 return;
4645
4646         timeout = wpa_s->conf->p2p_group_idle;
4647         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
4648             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
4649             timeout = P2P_MAX_CLIENT_IDLE;
4650
4651         if (timeout == 0)
4652                 return;
4653
4654         if (timeout < 0) {
4655                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
4656                         timeout = 0; /* special client mode no-timeout */
4657                 else
4658                         return;
4659         }
4660
4661         if (wpa_s->p2p_in_provisioning) {
4662                 /*
4663                  * Use the normal group formation timeout during the
4664                  * provisioning phase to avoid terminating this process too
4665                  * early due to group idle timeout.
4666                  */
4667                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4668                            "during provisioning");
4669                 return;
4670         }
4671
4672         if (wpa_s->show_group_started) {
4673                 /*
4674                  * Use the normal group formation timeout between the end of
4675                  * the provisioning phase and completion of 4-way handshake to
4676                  * avoid terminating this process too early due to group idle
4677                  * timeout.
4678                  */
4679                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4680                            "while waiting for initial 4-way handshake to "
4681                            "complete");
4682                 return;
4683         }
4684
4685         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
4686                    timeout);
4687         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
4688                                wpa_s, NULL);
4689 }
4690
4691
4692 /* Returns 1 if the interface was removed */
4693 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4694                           u16 reason_code, const u8 *ie, size_t ie_len,
4695                           int locally_generated)
4696 {
4697         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4698                 return 0;
4699         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4700                 return 0;
4701
4702         if (!locally_generated)
4703                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4704                                  ie_len);
4705
4706         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
4707             wpa_s->current_ssid &&
4708             wpa_s->current_ssid->p2p_group &&
4709             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
4710                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
4711                            "session is ending");
4712                 if (wpas_p2p_group_delete(wpa_s,
4713                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
4714                     > 0)
4715                         return 1;
4716         }
4717
4718         return 0;
4719 }
4720
4721
4722 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4723                              u16 reason_code, const u8 *ie, size_t ie_len,
4724                              int locally_generated)
4725 {
4726         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4727                 return;
4728         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4729                 return;
4730
4731         if (!locally_generated)
4732                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4733                                    ie_len);
4734 }
4735
4736
4737 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
4738 {
4739         struct p2p_data *p2p = wpa_s->global->p2p;
4740
4741         if (p2p == NULL)
4742                 return;
4743
4744         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4745                 return;
4746
4747         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
4748                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
4749
4750         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
4751                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
4752
4753         if (wpa_s->wps &&
4754             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
4755                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
4756
4757         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
4758                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
4759
4760         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
4761                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
4762                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
4763                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
4764                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
4765         }
4766
4767         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
4768                 p2p_set_sec_dev_types(p2p,
4769                                       (void *) wpa_s->conf->sec_device_type,
4770                                       wpa_s->conf->num_sec_device_types);
4771
4772         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
4773                 int i;
4774                 p2p_remove_wps_vendor_extensions(p2p);
4775                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4776                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4777                                 continue;
4778                         p2p_add_wps_vendor_extension(
4779                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
4780                 }
4781         }
4782
4783         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
4784             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4785                 char country[3];
4786                 country[0] = wpa_s->conf->country[0];
4787                 country[1] = wpa_s->conf->country[1];
4788                 country[2] = 0x04;
4789                 p2p_set_country(p2p, country);
4790         }
4791
4792         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
4793                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
4794                                      wpa_s->conf->p2p_ssid_postfix ?
4795                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
4796                                      0);
4797         }
4798
4799         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
4800                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
4801
4802         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
4803                 u8 reg_class, channel;
4804                 int ret;
4805                 unsigned int r;
4806                 if (wpa_s->conf->p2p_listen_reg_class &&
4807                     wpa_s->conf->p2p_listen_channel) {
4808                         reg_class = wpa_s->conf->p2p_listen_reg_class;
4809                         channel = wpa_s->conf->p2p_listen_channel;
4810                 } else {
4811                         reg_class = 81;
4812                         /*
4813                          * Pick one of the social channels randomly as the
4814                          * listen channel.
4815                          */
4816                         os_get_random((u8 *) &r, sizeof(r));
4817                         channel = 1 + (r % 3) * 5;
4818                 }
4819                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
4820                 if (ret)
4821                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
4822                                    "failed: %d", ret);
4823         }
4824         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
4825                 u8 op_reg_class, op_channel, cfg_op_channel;
4826                 int ret = 0;
4827                 unsigned int r;
4828                 if (wpa_s->conf->p2p_oper_reg_class &&
4829                     wpa_s->conf->p2p_oper_channel) {
4830                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4831                         op_channel = wpa_s->conf->p2p_oper_channel;
4832                         cfg_op_channel = 1;
4833                 } else {
4834                         op_reg_class = 81;
4835                         /*
4836                          * Use random operation channel from (1, 6, 11)
4837                          *if no other preference is indicated.
4838                          */
4839                         os_get_random((u8 *) &r, sizeof(r));
4840                         op_channel = 1 + (r % 3) * 5;
4841                         cfg_op_channel = 0;
4842                 }
4843                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
4844                                            cfg_op_channel);
4845                 if (ret)
4846                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
4847                                    "failed: %d", ret);
4848         }
4849
4850         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
4851                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
4852                                       wpa_s->conf->p2p_pref_chan) < 0) {
4853                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
4854                                    "update failed");
4855                 }
4856         }
4857 }
4858
4859
4860 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
4861                      int duration)
4862 {
4863         if (!wpa_s->ap_iface)
4864                 return -1;
4865         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
4866                                    duration);
4867 }
4868
4869
4870 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
4871 {
4872         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4873                 return -1;
4874         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4875                 return -1;
4876
4877         wpa_s->global->cross_connection = enabled;
4878         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
4879
4880         if (!enabled) {
4881                 struct wpa_supplicant *iface;
4882
4883                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
4884                 {
4885                         if (iface->cross_connect_enabled == 0)
4886                                 continue;
4887
4888                         iface->cross_connect_enabled = 0;
4889                         iface->cross_connect_in_use = 0;
4890                         wpa_msg(iface->parent, MSG_INFO,
4891                                 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
4892                                 iface->ifname, iface->cross_connect_uplink);
4893                 }
4894         }
4895
4896         return 0;
4897 }
4898
4899
4900 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
4901 {
4902         struct wpa_supplicant *iface;
4903
4904         if (!uplink->global->cross_connection)
4905                 return;
4906
4907         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
4908                 if (!iface->cross_connect_enabled)
4909                         continue;
4910                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
4911                     0)
4912                         continue;
4913                 if (iface->ap_iface == NULL)
4914                         continue;
4915                 if (iface->cross_connect_in_use)
4916                         continue;
4917
4918                 iface->cross_connect_in_use = 1;
4919                 wpa_msg(iface->parent, MSG_INFO,
4920                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
4921                         iface->ifname, iface->cross_connect_uplink);
4922         }
4923 }
4924
4925
4926 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
4927 {
4928         struct wpa_supplicant *iface;
4929
4930         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
4931                 if (!iface->cross_connect_enabled)
4932                         continue;
4933                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
4934                     0)
4935                         continue;
4936                 if (!iface->cross_connect_in_use)
4937                         continue;
4938
4939                 wpa_msg(iface->parent, MSG_INFO,
4940                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
4941                         iface->ifname, iface->cross_connect_uplink);
4942                 iface->cross_connect_in_use = 0;
4943         }
4944 }
4945
4946
4947 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
4948 {
4949         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
4950             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
4951             wpa_s->cross_connect_disallowed)
4952                 wpas_p2p_disable_cross_connect(wpa_s);
4953         else
4954                 wpas_p2p_enable_cross_connect(wpa_s);
4955         if (!wpa_s->ap_iface &&
4956             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
4957                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
4958 }
4959
4960
4961 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
4962 {
4963         wpas_p2p_disable_cross_connect(wpa_s);
4964         if (!wpa_s->ap_iface &&
4965             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
4966                                          wpa_s, NULL))
4967                 wpas_p2p_set_group_idle_timeout(wpa_s);
4968 }
4969
4970
4971 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
4972 {
4973         struct wpa_supplicant *iface;
4974
4975         if (!wpa_s->global->cross_connection)
4976                 return;
4977
4978         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
4979                 if (iface == wpa_s)
4980                         continue;
4981                 if (iface->drv_flags &
4982                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
4983                         continue;
4984                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
4985                         continue;
4986
4987                 wpa_s->cross_connect_enabled = 1;
4988                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
4989                            sizeof(wpa_s->cross_connect_uplink));
4990                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
4991                            "%s to %s whenever uplink is available",
4992                            wpa_s->ifname, wpa_s->cross_connect_uplink);
4993
4994                 if (iface->ap_iface || iface->current_ssid == NULL ||
4995                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
4996                     iface->cross_connect_disallowed ||
4997                     iface->wpa_state != WPA_COMPLETED)
4998                         break;
4999
5000                 wpa_s->cross_connect_in_use = 1;
5001                 wpa_msg(wpa_s->parent, MSG_INFO,
5002                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
5003                         wpa_s->ifname, wpa_s->cross_connect_uplink);
5004                 break;
5005         }
5006 }
5007
5008
5009 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
5010 {
5011         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
5012             !wpa_s->p2p_in_provisioning)
5013                 return 0; /* not P2P client operation */
5014
5015         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
5016                    "session overlap");
5017         if (wpa_s != wpa_s->parent)
5018                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
5019
5020         if (wpa_s->global->p2p)
5021                 p2p_group_formation_failed(wpa_s->global->p2p);
5022
5023         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5024                              wpa_s->parent, NULL);
5025
5026         wpas_group_formation_completed(wpa_s, 0);
5027         return 1;
5028 }
5029
5030
5031 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
5032 {
5033         struct p2p_channels chan;
5034
5035         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
5036                 return;
5037
5038         os_memset(&chan, 0, sizeof(chan));
5039         if (wpas_p2p_setup_channels(wpa_s, &chan)) {
5040                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
5041                            "channel list");
5042                 return;
5043         }
5044
5045         p2p_update_channel_list(wpa_s->global->p2p, &chan);
5046 }
5047
5048
5049 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
5050 {
5051         struct wpa_global *global = wpa_s->global;
5052         int found = 0;
5053         const u8 *peer;
5054
5055         if (global->p2p == NULL)
5056                 return -1;
5057
5058         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
5059
5060         if (wpa_s->pending_interface_name[0] &&
5061             !is_zero_ether_addr(wpa_s->pending_interface_addr))
5062                 found = 1;
5063
5064         peer = p2p_get_go_neg_peer(global->p2p);
5065         if (peer) {
5066                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
5067                            MACSTR, MAC2STR(peer));
5068                 p2p_unauthorize(global->p2p, peer);
5069                 found = 1;
5070         }
5071
5072         wpas_p2p_stop_find(wpa_s);
5073
5074         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5075                 if (wpa_s == global->p2p_group_formation &&
5076                     (wpa_s->p2p_in_provisioning ||
5077                      wpa_s->parent->pending_interface_type ==
5078                      WPA_IF_P2P_CLIENT)) {
5079                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
5080                                    "formation found - cancelling",
5081                                    wpa_s->ifname);
5082                         found = 1;
5083                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5084                                              wpa_s->parent, NULL);
5085                         if (wpa_s->p2p_in_provisioning) {
5086                                 wpas_group_formation_completed(wpa_s, 0);
5087                                 break;
5088                         }
5089                         wpas_p2p_group_delete(wpa_s,
5090                                               P2P_GROUP_REMOVAL_REQUESTED);
5091                         break;
5092                 }
5093         }
5094
5095         if (!found) {
5096                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
5097                 return -1;
5098         }
5099
5100         return 0;
5101 }
5102
5103
5104 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
5105 {
5106         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
5107                 return;
5108
5109         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
5110                    "being available anymore");
5111         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
5112 }
5113
5114
5115 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
5116                                    int freq_24, int freq_5, int freq_overall)
5117 {
5118         struct p2p_data *p2p = wpa_s->global->p2p;
5119         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5120                 return;
5121         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
5122 }
5123
5124
5125 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
5126 {
5127         u8 peer[ETH_ALEN];
5128         struct p2p_data *p2p = wpa_s->global->p2p;
5129
5130         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5131                 return -1;
5132
5133         if (hwaddr_aton(addr, peer))
5134                 return -1;
5135
5136         return p2p_unauthorize(p2p, peer);
5137 }
5138
5139
5140 /**
5141  * wpas_p2p_disconnect - Disconnect from a P2P Group
5142  * @wpa_s: Pointer to wpa_supplicant data
5143  * Returns: 0 on success, -1 on failure
5144  *
5145  * This can be used to disconnect from a group in which the local end is a P2P
5146  * Client or to end a P2P Group in case the local end is the Group Owner. If a
5147  * virtual network interface was created for this group, that interface will be
5148  * removed. Otherwise, only the configured P2P group network will be removed
5149  * from the interface.
5150  */
5151 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
5152 {
5153
5154         if (wpa_s == NULL)
5155                 return -1;
5156
5157         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
5158                 -1 : 0;
5159 }
5160
5161
5162 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
5163 {
5164         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5165                 return 0;
5166
5167         return p2p_in_progress(wpa_s->global->p2p);
5168 }
5169
5170
5171 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
5172                               struct wpa_ssid *ssid)
5173 {
5174         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
5175             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5176                                  wpa_s->parent, NULL) > 0) {
5177                 /**
5178                  * Remove the network by scheduling the group formation
5179                  * timeout to happen immediately. The teardown code
5180                  * needs to be scheduled to run asynch later so that we
5181                  * don't delete data from under ourselves unexpectedly.
5182                  * Calling wpas_p2p_group_formation_timeout directly
5183                  * causes a series of crashes in WPS failure scenarios.
5184                  */
5185                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
5186                            "P2P group network getting removed");
5187                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
5188                                        wpa_s->parent, NULL);
5189         }
5190 }
5191
5192
5193 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
5194                                           const u8 *addr, const u8 *ssid,
5195                                           size_t ssid_len)
5196 {
5197         struct wpa_ssid *s;
5198         size_t i;
5199
5200         for (s = wpa_s->conf->ssid; s; s = s->next) {
5201                 if (s->disabled != 2)
5202                         continue;
5203                 if (ssid &&
5204                     (ssid_len != s->ssid_len ||
5205                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
5206                         continue;
5207                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
5208                         return s; /* peer is GO in the persistent group */
5209                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
5210                         continue;
5211                 for (i = 0; i < s->num_p2p_clients; i++) {
5212                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
5213                                       addr, ETH_ALEN) == 0)
5214                                 return s; /* peer is P2P client in persistent
5215                                            * group */
5216                 }
5217         }
5218
5219         return NULL;
5220 }
5221
5222
5223 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
5224                                        const u8 *addr)
5225 {
5226         if (addr == NULL)
5227                 return;
5228         wpas_p2p_add_persistent_group_client(wpa_s, addr);
5229 }
5230
5231
5232 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
5233                                         int group_added)
5234 {
5235         struct wpa_supplicant *group = wpa_s;
5236         eloop_cancel_timeout(wpas_p2p_pd_before_join_timeout, wpa_s, NULL);
5237         if (wpa_s->global->p2p_group_formation)
5238                 group = wpa_s->global->p2p_group_formation;
5239         wpa_s = wpa_s->parent;
5240         offchannel_send_action_done(wpa_s);
5241         if (group_added)
5242                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
5243         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
5244         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
5245                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
5246                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
5247                          wpa_s->p2p_persistent_id,
5248                          wpa_s->p2p_pd_before_go_neg,
5249                          wpa_s->p2p_go_ht40);
5250 }
5251
5252
5253 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
5254 {
5255         if (!wpa_s->p2p_fallback_to_go_neg ||
5256             wpa_s->p2p_in_provisioning <= 5)
5257                 return 0;
5258
5259         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
5260                 return 0; /* peer operating as a GO */
5261
5262         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
5263                 "fallback to GO Negotiation");
5264         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
5265
5266         return 1;
5267 }
5268
5269
5270 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
5271 {
5272         const char *rn, *rn2;
5273         struct wpa_supplicant *ifs;
5274
5275         if (wpa_s->wpa_state > WPA_SCANNING) {
5276                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
5277                         "concurrent operation",
5278                         P2P_CONCURRENT_SEARCH_DELAY);
5279                 return P2P_CONCURRENT_SEARCH_DELAY;
5280         }
5281
5282         if (!wpa_s->driver->get_radio_name)
5283                 return 0;
5284         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
5285         if (rn == NULL || rn[0] == '\0')
5286                 return 0;
5287
5288         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
5289                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
5290                         continue;
5291
5292                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
5293                 if (!rn2 || os_strcmp(rn, rn2) != 0)
5294                         continue;
5295                 if (ifs->wpa_state > WPA_SCANNING) {
5296                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
5297                                 "delay due to concurrent operation on "
5298                                 "interface %s",
5299                                 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
5300                         return P2P_CONCURRENT_SEARCH_DELAY;
5301                 }
5302         }
5303
5304         return 0;
5305 }