wpa_supplicant/p2p_supplicant.c

   1 /*
   2  * wpa_supplicant - P2P
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eloop.h"
  13 #include "common/ieee802_11_common.h"
  14 #include "common/ieee802_11_defs.h"
  15 #include "common/wpa_ctrl.h"
  16 #include "wps/wps_i.h"
  17 #include "p2p/p2p.h"
  18 #include "ap/hostapd.h"
  19 #include "ap/ap_config.h"
  20 #include "ap/p2p_hostapd.h"
  21 #include "eapol_supp/eapol_supp_sm.h"
  22 #include "rsn_supp/wpa.h"
  23 #include "wpa_supplicant_i.h"
  24 #include "driver_i.h"
  25 #include "ap.h"
  26 #include "config_ssid.h"
  27 #include "config.h"
  28 #include "notify.h"
  29 #include "scan.h"
  30 #include "bss.h"
  31 #include "offchannel.h"
  32 #include "wps_supplicant.h"
  33 #include "p2p_supplicant.h"
  34
  35
  36 /*
  37  * How many times to try to scan to find the GO before giving up on join
  38  * request.
  39  */
  40 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  41
  42 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
  43
  44 #ifndef P2P_MAX_CLIENT_IDLE
  45 /*
  46  * How many seconds to try to reconnect to the GO when connection in P2P client
  47  * role has been lost.
  48  */
  49 #define P2P_MAX_CLIENT_IDLE 10
  50 #endif /* P2P_MAX_CLIENT_IDLE */
  51
  52 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  53 /*
  54  * How many seconds to wait for initial 4-way handshake to get completed after
  55  * WPS provisioning step.
  56  */
  57 #define P2P_MAX_INITIAL_CONN_WAIT 10
  58 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  59
  60 #ifndef P2P_CONCURRENT_SEARCH_DELAY
  61 #define P2P_CONCURRENT_SEARCH_DELAY 500
  62 #endif /* P2P_CONCURRENT_SEARCH_DELAY */
  63
  64 enum p2p_group_removal_reason {
  65         P2P_GROUP_REMOVAL_UNKNOWN,
  66         P2P_GROUP_REMOVAL_SILENT,
  67         P2P_GROUP_REMOVAL_FORMATION_FAILED,
  68         P2P_GROUP_REMOVAL_REQUESTED,
  69         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
  70         P2P_GROUP_REMOVAL_UNAVAILABLE,
  71         P2P_GROUP_REMOVAL_GO_ENDING_SESSION
  72 };
  73
  74
  75 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
  76 static struct wpa_supplicant *
  77 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
  78                          int go);
  79 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s);
  80 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq);
  81 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
  82 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
  83                          const u8 *dev_addr, enum p2p_wps_method wps_method,
  84                          int auto_join);
  85 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
  86 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
  87 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
  88 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
  89 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
  90                                              void *timeout_ctx);
  91 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
  92                                         int group_added);
  93 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
  94
  95
  96 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
  97                                       struct wpa_scan_results *scan_res)
  98 {
  99         size_t i;
 100
 101         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 102                 return;
 103
 104         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 105                    (int) scan_res->num);
 106
 107         for (i = 0; i < scan_res->num; i++) {
 108                 struct wpa_scan_res *bss = scan_res->res[i];
 109                 struct os_time time_tmp_age, entry_ts;
 110                 time_tmp_age.sec = bss->age / 1000;
 111                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 112                 os_time_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 113                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 114                                          bss->freq, &entry_ts, bss->level,
 115                                          (const u8 *) (bss + 1),
 116                                          bss->ie_len) > 0)
 117                         break;
 118         }
 119
 120         p2p_scan_res_handled(wpa_s->global->p2p);
 121 }
 122
 123
 124 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 125                          unsigned int num_req_dev_types,
 126                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 127 {
 128         struct wpa_supplicant *wpa_s = ctx;
 129         struct wpa_supplicant *ifs;
 130         struct wpa_driver_scan_params params;
 131         int ret;
 132         struct wpabuf *wps_ie, *ies;
 133         int social_channels[] = { 2412, 2437, 2462, 0, 0 };
 134         size_t ielen;
 135
 136         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 137                 return -1;
 138
 139         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
 140                 if (ifs->sta_scan_pending &&
 141                     wpas_p2p_in_progress(wpa_s) == 2) {
 142                         wpa_printf(MSG_DEBUG, "Delaying P2P scan to allow "
 143                                    "pending station mode scan to be "
 144                                    "completed on interface %s", ifs->ifname);
 145                         wpa_s->global->p2p_cb_on_scan_complete = 1;
 146                         wpa_supplicant_req_scan(ifs, 0, 0);
 147                         return 1;
 148                 }
 149         }
 150
 151         os_memset(&params, 0, sizeof(params));
 152
 153         /* P2P Wildcard SSID */
 154         params.num_ssids = 1;
 155         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
 156         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 157
 158         wpa_s->wps->dev.p2p = 1;
 159         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 160                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 161                                         num_req_dev_types, req_dev_types);
 162         if (wps_ie == NULL)
 163                 return -1;
 164
 165         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 166         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 167         if (ies == NULL) {
 168                 wpabuf_free(wps_ie);
 169                 return -1;
 170         }
 171         wpabuf_put_buf(ies, wps_ie);
 172         wpabuf_free(wps_ie);
 173
 174         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 175
 176         params.p2p_probe = 1;
 177         params.extra_ies = wpabuf_head(ies);
 178         params.extra_ies_len = wpabuf_len(ies);
 179
 180         switch (type) {
 181         case P2P_SCAN_SOCIAL:
 182                 params.freqs = social_channels;
 183                 break;
 184         case P2P_SCAN_FULL:
 185                 break;
 186         case P2P_SCAN_SOCIAL_PLUS_ONE:
 187                 social_channels[3] = freq;
 188                 params.freqs = social_channels;
 189                 break;
 190         }
 191
 192         ret = wpa_drv_scan(wpa_s, &params);
 193
 194         wpabuf_free(ies);
 195
 196         if (ret) {
 197                 for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
 198                         if (ifs->scanning ||
 199                             ifs->scan_res_handler == wpas_p2p_scan_res_handler) {
 200                                 wpa_s->global->p2p_cb_on_scan_complete = 1;
 201                                 ret = 1;
 202                                 break;
 203                         }
 204                 }
 205         } else
 206                 wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 207
 208         return ret;
 209 }
 210
 211
 212 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 213 {
 214         switch (p2p_group_interface) {
 215         case P2P_GROUP_INTERFACE_PENDING:
 216                 return WPA_IF_P2P_GROUP;
 217         case P2P_GROUP_INTERFACE_GO:
 218                 return WPA_IF_P2P_GO;
 219         case P2P_GROUP_INTERFACE_CLIENT:
 220                 return WPA_IF_P2P_CLIENT;
 221         }
 222
 223         return WPA_IF_P2P_GROUP;
 224 }
 225
 226
 227 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 228                                                   const u8 *ssid,
 229                                                   size_t ssid_len, int *go)
 230 {
 231         struct wpa_ssid *s;
 232
 233         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 234                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 235                         if (s->disabled != 0 || !s->p2p_group ||
 236                             s->ssid_len != ssid_len ||
 237                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 238                                 continue;
 239                         if (s->mode == WPAS_MODE_P2P_GO &&
 240                             s != wpa_s->current_ssid)
 241                                 continue;
 242                         if (go)
 243                                 *go = s->mode == WPAS_MODE_P2P_GO;
 244                         return wpa_s;
 245                 }
 246         }
 247
 248         return NULL;
 249 }
 250
 251
 252 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 253                                  enum p2p_group_removal_reason removal_reason)
 254 {
 255         struct wpa_ssid *ssid;
 256         char *gtype;
 257         const char *reason;
 258
 259         ssid = wpa_s->current_ssid;
 260         if (ssid == NULL) {
 261                 /*
 262                  * The current SSID was not known, but there may still be a
 263                  * pending P2P group interface waiting for provisioning or a
 264                  * P2P group that is trying to reconnect.
 265                  */
 266                 ssid = wpa_s->conf->ssid;
 267                 while (ssid) {
 268                         if (ssid->p2p_group && ssid->disabled != 2)
 269                                 break;
 270                         ssid = ssid->next;
 271                 }
 272                 if (ssid == NULL &&
 273                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 274                 {
 275                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 276                                    "not found");
 277                         return -1;
 278                 }
 279         }
 280         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 281                 gtype = "GO";
 282         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 283                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 284                 wpa_s->reassociate = 0;
 285                 wpa_s->disconnected = 1;
 286                 wpa_supplicant_deauthenticate(wpa_s,
 287                                               WLAN_REASON_DEAUTH_LEAVING);
 288                 gtype = "client";
 289         } else
 290                 gtype = "GO";
 291         if (wpa_s->cross_connect_in_use) {
 292                 wpa_s->cross_connect_in_use = 0;
 293                 wpa_msg(wpa_s->parent, MSG_INFO,
 294                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 295                         wpa_s->ifname, wpa_s->cross_connect_uplink);
 296         }
 297         switch (removal_reason) {
 298         case P2P_GROUP_REMOVAL_REQUESTED:
 299                 reason = " reason=REQUESTED";
 300                 break;
 301         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 302                 reason = " reason=FORMATION_FAILED";
 303                 break;
 304         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 305                 reason = " reason=IDLE";
 306                 break;
 307         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 308                 reason = " reason=UNAVAILABLE";
 309                 break;
 310         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 311                 reason = " reason=GO_ENDING_SESSION";
 312                 break;
 313         default:
 314                 reason = "";
 315                 break;
 316         }
 317         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 318                 wpa_msg(wpa_s->parent, MSG_INFO,
 319                         P2P_EVENT_GROUP_REMOVED "%s %s%s",
 320                         wpa_s->ifname, gtype, reason);
 321         }
 322
 323         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 324                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 325         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 326                                  wpa_s->parent, NULL) > 0)
 327                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 328                            "timeout");
 329
 330         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 331                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 332
 333         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 334                 struct wpa_global *global;
 335                 char *ifname;
 336                 enum wpa_driver_if_type type;
 337                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 338                         wpa_s->ifname);
 339                 global = wpa_s->global;
 340                 ifname = os_strdup(wpa_s->ifname);
 341                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 342                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 343                 wpa_s = global->ifaces;
 344                 if (wpa_s && ifname)
 345                         wpa_drv_if_remove(wpa_s, type, ifname);
 346                 os_free(ifname);
 347                 return 1;
 348         }
 349
 350         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 351         if (ssid && (ssid->p2p_group ||
 352                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 353                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 354                 int id = ssid->id;
 355                 if (ssid == wpa_s->current_ssid) {
 356                         wpa_sm_set_config(wpa_s->wpa, NULL);
 357                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 358                         wpa_s->current_ssid = NULL;
 359                 }
 360                 /*
 361                  * Networks objects created during any P2P activities are not
 362                  * exposed out as they might/will confuse certain non-P2P aware
 363                  * applications since these network objects won't behave like
 364                  * regular ones.
 365                  *
 366                  * Likewise, we don't send out network removed signals for such
 367                  * network objects.
 368                  */
 369                 wpa_config_remove_network(wpa_s->conf, id);
 370                 wpa_supplicant_clear_status(wpa_s);
 371                 wpa_supplicant_cancel_sched_scan(wpa_s);
 372                 wpa_s->sta_scan_pending = 0;
 373         } else {
 374                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 375                            "found");
 376         }
 377         if (wpa_s->ap_iface)
 378                 wpa_supplicant_ap_deinit(wpa_s);
 379         else
 380                 wpa_drv_deinit_p2p_cli(wpa_s);
 381
 382         return 0;
 383 }
 384
 385
 386 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 387                                      u8 *go_dev_addr,
 388                                      const u8 *ssid, size_t ssid_len)
 389 {
 390         struct wpa_bss *bss;
 391         const u8 *bssid;
 392         struct wpabuf *p2p;
 393         u8 group_capab;
 394         const u8 *addr;
 395
 396         if (wpa_s->go_params)
 397                 bssid = wpa_s->go_params->peer_interface_addr;
 398         else
 399                 bssid = wpa_s->bssid;
 400
 401         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 402         if (bss == NULL) {
 403                 u8 iface_addr[ETH_ALEN];
 404                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 405                                            iface_addr) == 0)
 406                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 407         }
 408         if (bss == NULL) {
 409                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 410                            "group is persistent - BSS " MACSTR " not found",
 411                            MAC2STR(bssid));
 412                 return 0;
 413         }
 414
 415         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 416         if (p2p == NULL) {
 417                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 418                            "group is persistent - BSS " MACSTR
 419                            " did not include P2P IE", MAC2STR(bssid));
 420                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 421                             (u8 *) (bss + 1), bss->ie_len);
 422                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 423                             ((u8 *) bss + 1) + bss->ie_len,
 424                             bss->beacon_ie_len);
 425                 return 0;
 426         }
 427
 428         group_capab = p2p_get_group_capab(p2p);
 429         addr = p2p_get_go_dev_addr(p2p);
 430         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 431                    "group_capab=0x%x", group_capab);
 432         if (addr) {
 433                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
 434                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
 435                            MAC2STR(addr));
 436         } else
 437                 os_memset(go_dev_addr, 0, ETH_ALEN);
 438         wpabuf_free(p2p);
 439
 440         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
 441                    "go_dev_addr=" MACSTR,
 442                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
 443
 444         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
 445 }
 446
 447
 448 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
 449                                            struct wpa_ssid *ssid,
 450                                            const u8 *go_dev_addr)
 451 {
 452         struct wpa_ssid *s;
 453         int changed = 0;
 454
 455         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
 456                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
 457         for (s = wpa_s->conf->ssid; s; s = s->next) {
 458                 if (s->disabled == 2 &&
 459                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
 460                     s->ssid_len == ssid->ssid_len &&
 461                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
 462                         break;
 463         }
 464
 465         if (s) {
 466                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
 467                            "entry");
 468                 if (ssid->passphrase && !s->passphrase)
 469                         changed = 1;
 470                 else if (ssid->passphrase && s->passphrase &&
 471                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
 472                         changed = 1;
 473         } else {
 474                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
 475                            "entry");
 476                 changed = 1;
 477                 s = wpa_config_add_network(wpa_s->conf);
 478                 if (s == NULL)
 479                         return -1;
 480
 481                 /*
 482                  * Instead of network_added we emit persistent_group_added
 483                  * notification. Also to keep the defense checks in
 484                  * persistent_group obj registration method, we set the
 485                  * relevant flags in s to designate it as a persistent group.
 486                  */
 487                 s->p2p_group = 1;
 488                 s->p2p_persistent_group = 1;
 489                 wpas_notify_persistent_group_added(wpa_s, s);
 490                 wpa_config_set_network_defaults(s);
 491         }
 492
 493         s->p2p_group = 1;
 494         s->p2p_persistent_group = 1;
 495         s->disabled = 2;
 496         s->bssid_set = 1;
 497         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
 498         s->mode = ssid->mode;
 499         s->auth_alg = WPA_AUTH_ALG_OPEN;
 500         s->key_mgmt = WPA_KEY_MGMT_PSK;
 501         s->proto = WPA_PROTO_RSN;
 502         s->pairwise_cipher = WPA_CIPHER_CCMP;
 503         s->export_keys = 1;
 504         if (ssid->passphrase) {
 505                 os_free(s->passphrase);
 506                 s->passphrase = os_strdup(ssid->passphrase);
 507         }
 508         if (ssid->psk_set) {
 509                 s->psk_set = 1;
 510                 os_memcpy(s->psk, ssid->psk, 32);
 511         }
 512         if (s->passphrase && !s->psk_set)
 513                 wpa_config_update_psk(s);
 514         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
 515                 os_free(s->ssid);
 516                 s->ssid = os_malloc(ssid->ssid_len);
 517         }
 518         if (s->ssid) {
 519                 s->ssid_len = ssid->ssid_len;
 520                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
 521         }
 522
 523 #ifndef CONFIG_NO_CONFIG_WRITE
 524         if (changed && wpa_s->conf->update_config &&
 525             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 526                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 527         }
 528 #endif /* CONFIG_NO_CONFIG_WRITE */
 529
 530         return s->id;
 531 }
 532
 533
 534 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
 535                                                  const u8 *addr)
 536 {
 537         struct wpa_ssid *ssid, *s;
 538         u8 *n;
 539         size_t i;
 540         int found = 0;
 541
 542         ssid = wpa_s->current_ssid;
 543         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
 544             !ssid->p2p_persistent_group)
 545                 return;
 546
 547         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
 548                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
 549                         continue;
 550
 551                 if (s->ssid_len == ssid->ssid_len &&
 552                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
 553                         break;
 554         }
 555
 556         if (s == NULL)
 557                 return;
 558
 559         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
 560                 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
 561                               ETH_ALEN) != 0)
 562                         continue;
 563
 564                 if (i == s->num_p2p_clients - 1)
 565                         return; /* already the most recent entry */
 566
 567                 /* move the entry to mark it most recent */
 568                 os_memmove(s->p2p_client_list + i * ETH_ALEN,
 569                            s->p2p_client_list + (i + 1) * ETH_ALEN,
 570                            (s->num_p2p_clients - i - 1) * ETH_ALEN);
 571                 os_memcpy(s->p2p_client_list +
 572                           (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
 573                 found = 1;
 574                 break;
 575         }
 576
 577         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
 578                 n = os_realloc_array(s->p2p_client_list,
 579                                      s->num_p2p_clients + 1, ETH_ALEN);
 580                 if (n == NULL)
 581                         return;
 582                 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
 583                 s->p2p_client_list = n;
 584                 s->num_p2p_clients++;
 585         } else if (!found) {
 586                 /* Not enough room for an additional entry - drop the oldest
 587                  * entry */
 588                 os_memmove(s->p2p_client_list,
 589                            s->p2p_client_list + ETH_ALEN,
 590                            (s->num_p2p_clients - 1) * ETH_ALEN);
 591                 os_memcpy(s->p2p_client_list +
 592                           (s->num_p2p_clients - 1) * ETH_ALEN,
 593                           addr, ETH_ALEN);
 594         }
 595
 596 #ifndef CONFIG_NO_CONFIG_WRITE
 597         if (wpa_s->parent->conf->update_config &&
 598             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
 599                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 600 #endif /* CONFIG_NO_CONFIG_WRITE */
 601 }
 602
 603
 604 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 605                                            int success)
 606 {
 607         struct wpa_ssid *ssid;
 608         const char *ssid_txt;
 609         int client;
 610         int persistent;
 611         u8 go_dev_addr[ETH_ALEN];
 612         int network_id = -1;
 613
 614         /*
 615          * This callback is likely called for the main interface. Update wpa_s
 616          * to use the group interface if a new interface was created for the
 617          * group.
 618          */
 619         if (wpa_s->global->p2p_group_formation)
 620                 wpa_s = wpa_s->global->p2p_group_formation;
 621         wpa_s->global->p2p_group_formation = NULL;
 622         wpa_s->p2p_in_provisioning = 0;
 623
 624         if (!success) {
 625                 wpa_msg(wpa_s->parent, MSG_INFO,
 626                         P2P_EVENT_GROUP_FORMATION_FAILURE);
 627                 wpas_p2p_group_delete(wpa_s,
 628                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
 629                 return;
 630         }
 631
 632         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_FORMATION_SUCCESS);
 633
 634         ssid = wpa_s->current_ssid;
 635         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 636                 ssid->mode = WPAS_MODE_P2P_GO;
 637                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 638                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 639         }
 640
 641         persistent = 0;
 642         if (ssid) {
 643                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 644                 client = ssid->mode == WPAS_MODE_INFRA;
 645                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 646                         persistent = ssid->p2p_persistent_group;
 647                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
 648                                   ETH_ALEN);
 649                 } else
 650                         persistent = wpas_p2p_persistent_group(wpa_s,
 651                                                                go_dev_addr,
 652                                                                ssid->ssid,
 653                                                                ssid->ssid_len);
 654         } else {
 655                 ssid_txt = "";
 656                 client = wpa_s->p2p_group_interface ==
 657                         P2P_GROUP_INTERFACE_CLIENT;
 658                 os_memset(go_dev_addr, 0, ETH_ALEN);
 659         }
 660
 661         wpa_s->show_group_started = 0;
 662         if (client) {
 663                 /*
 664                  * Indicate event only after successfully completed 4-way
 665                  * handshake, i.e., when the interface is ready for data
 666                  * packets.
 667                  */
 668                 wpa_s->show_group_started = 1;
 669         } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
 670                 char psk[65];
 671                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
 672                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 673                         "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr=" MACSTR
 674                         "%s",
 675                         wpa_s->ifname, ssid_txt, ssid->frequency, psk,
 676                         MAC2STR(go_dev_addr),
 677                         persistent ? " [PERSISTENT]" : "");
 678                 wpas_p2p_cross_connect_setup(wpa_s);
 679                 wpas_p2p_set_group_idle_timeout(wpa_s);
 680         } else {
 681                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 682                         "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 683                         "go_dev_addr=" MACSTR "%s",
 684                         wpa_s->ifname, ssid_txt, ssid ? ssid->frequency : 0,
 685                         ssid && ssid->passphrase ? ssid->passphrase : "",
 686                         MAC2STR(go_dev_addr),
 687                         persistent ? " [PERSISTENT]" : "");
 688                 wpas_p2p_cross_connect_setup(wpa_s);
 689                 wpas_p2p_set_group_idle_timeout(wpa_s);
 690         }
 691
 692         if (persistent)
 693                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
 694                                                              ssid, go_dev_addr);
 695         if (network_id < 0 && ssid)
 696                 network_id = ssid->id;
 697         if (!client)
 698                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 699 }
 700
 701
 702 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
 703                                            unsigned int freq,
 704                                            const u8 *dst, const u8 *src,
 705                                            const u8 *bssid,
 706                                            const u8 *data, size_t data_len,
 707                                            enum offchannel_send_action_result
 708                                            result)
 709 {
 710         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
 711
 712         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
 713                 return;
 714         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
 715                 return;
 716
 717         switch (result) {
 718         case OFFCHANNEL_SEND_ACTION_SUCCESS:
 719                 res = P2P_SEND_ACTION_SUCCESS;
 720                 break;
 721         case OFFCHANNEL_SEND_ACTION_NO_ACK:
 722                 res = P2P_SEND_ACTION_NO_ACK;
 723                 break;
 724         case OFFCHANNEL_SEND_ACTION_FAILED:
 725                 res = P2P_SEND_ACTION_FAILED;
 726                 break;
 727         }
 728
 729         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
 730
 731         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
 732             wpa_s->pending_pd_before_join &&
 733             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
 734              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
 735             wpa_s->p2p_fallback_to_go_neg) {
 736                 wpa_s->pending_pd_before_join = 0;
 737                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
 738                         "during p2p_connect-auto");
 739                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
 740                 return;
 741         }
 742 }
 743
 744
 745 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
 746                             const u8 *src, const u8 *bssid, const u8 *buf,
 747                             size_t len, unsigned int wait_time)
 748 {
 749         struct wpa_supplicant *wpa_s = ctx;
 750         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
 751                                       wait_time,
 752                                       wpas_p2p_send_action_tx_status, 1);
 753 }
 754
 755
 756 static void wpas_send_action_done(void *ctx)
 757 {
 758         struct wpa_supplicant *wpa_s = ctx;
 759         offchannel_send_action_done(wpa_s);
 760 }
 761
 762
 763 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
 764                                     struct p2p_go_neg_results *params)
 765 {
 766         if (wpa_s->go_params == NULL) {
 767                 wpa_s->go_params = os_malloc(sizeof(*params));
 768                 if (wpa_s->go_params == NULL)
 769                         return -1;
 770         }
 771         os_memcpy(wpa_s->go_params, params, sizeof(*params));
 772         return 0;
 773 }
 774
 775
 776 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
 777                                     struct p2p_go_neg_results *res)
 778 {
 779         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR,
 780                    MAC2STR(res->peer_interface_addr));
 781         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
 782                           res->ssid, res->ssid_len);
 783         wpa_supplicant_ap_deinit(wpa_s);
 784         wpas_copy_go_neg_results(wpa_s, res);
 785         if (res->wps_method == WPS_PBC)
 786                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
 787         else {
 788                 u16 dev_pw_id = DEV_PW_DEFAULT;
 789                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
 790                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
 791                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
 792                                    wpa_s->p2p_pin, 1, dev_pw_id);
 793         }
 794 }
 795
 796
 797 static void p2p_go_configured(void *ctx, void *data)
 798 {
 799         struct wpa_supplicant *wpa_s = ctx;
 800         struct p2p_go_neg_results *params = data;
 801         struct wpa_ssid *ssid;
 802         int network_id = -1;
 803
 804         ssid = wpa_s->current_ssid;
 805         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
 806                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
 807                 if (wpa_s->global->p2p_group_formation == wpa_s)
 808                         wpa_s->global->p2p_group_formation = NULL;
 809                 if (os_strlen(params->passphrase) > 0) {
 810                         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 811                                 "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 812                                 "go_dev_addr=" MACSTR "%s", wpa_s->ifname,
 813                                 wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
 814                                 ssid->frequency, params->passphrase,
 815                                 MAC2STR(wpa_s->global->p2p_dev_addr),
 816                                 params->persistent_group ? " [PERSISTENT]" :
 817                                 "");
 818                 } else {
 819                         char psk[65];
 820                         wpa_snprintf_hex(psk, sizeof(psk), params->psk,
 821                                          sizeof(params->psk));
 822                         wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 823                                 "%s GO ssid=\"%s\" freq=%d psk=%s "
 824                                 "go_dev_addr=" MACSTR "%s", wpa_s->ifname,
 825                                 wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
 826                                 ssid->frequency, psk,
 827                                 MAC2STR(wpa_s->global->p2p_dev_addr),
 828                                 params->persistent_group ? " [PERSISTENT]" :
 829                                 "");
 830                 }
 831
 832                 if (params->persistent_group)
 833                         network_id = wpas_p2p_store_persistent_group(
 834                                 wpa_s->parent, ssid,
 835                                 wpa_s->global->p2p_dev_addr);
 836                 if (network_id < 0)
 837                         network_id = ssid->id;
 838                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 839                 wpas_p2p_cross_connect_setup(wpa_s);
 840                 wpas_p2p_set_group_idle_timeout(wpa_s);
 841                 return;
 842         }
 843
 844         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
 845         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
 846                                               params->peer_interface_addr)) {
 847                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
 848                            "filtering");
 849                 return;
 850         }
 851         if (params->wps_method == WPS_PBC)
 852                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
 853                                           params->peer_device_addr);
 854         else if (wpa_s->p2p_pin[0])
 855                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
 856                                           wpa_s->p2p_pin, NULL, 0, 0);
 857         os_free(wpa_s->go_params);
 858         wpa_s->go_params = NULL;
 859 }
 860
 861
 862 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
 863                               struct p2p_go_neg_results *params,
 864                               int group_formation)
 865 {
 866         struct wpa_ssid *ssid;
 867
 868         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
 869         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
 870                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
 871                         "results");
 872                 return;
 873         }
 874
 875         ssid = wpa_config_add_network(wpa_s->conf);
 876         if (ssid == NULL) {
 877                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
 878                 return;
 879         }
 880
 881         wpa_s->show_group_started = 0;
 882
 883         wpa_config_set_network_defaults(ssid);
 884         ssid->temporary = 1;
 885         ssid->p2p_group = 1;
 886         ssid->p2p_persistent_group = params->persistent_group;
 887         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
 888                 WPAS_MODE_P2P_GO;
 889         ssid->frequency = params->freq;
 890         ssid->ht40 = params->ht40;
 891         ssid->ssid = os_zalloc(params->ssid_len + 1);
 892         if (ssid->ssid) {
 893                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
 894                 ssid->ssid_len = params->ssid_len;
 895         }
 896         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
 897         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
 898         ssid->proto = WPA_PROTO_RSN;
 899         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
 900         if (os_strlen(params->passphrase) > 0) {
 901                 ssid->passphrase = os_strdup(params->passphrase);
 902                 if (ssid->passphrase == NULL) {
 903                         wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to copy "
 904                                 "passphrase for GO");
 905                         wpa_config_remove_network(wpa_s->conf, ssid->id);
 906                         return;
 907                 }
 908         } else
 909                 ssid->passphrase = NULL;
 910         ssid->psk_set = params->psk_set;
 911         if (ssid->psk_set)
 912                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
 913         else if (ssid->passphrase)
 914                 wpa_config_update_psk(ssid);
 915         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
 916
 917         wpa_s->ap_configured_cb = p2p_go_configured;
 918         wpa_s->ap_configured_cb_ctx = wpa_s;
 919         wpa_s->ap_configured_cb_data = wpa_s->go_params;
 920         wpa_s->connect_without_scan = ssid;
 921         wpa_s->reassociate = 1;
 922         wpa_s->disconnected = 0;
 923         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
 924                 "start GO)");
 925         wpa_supplicant_req_scan(wpa_s, 0, 0);
 926 }
 927
 928
 929 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
 930                                   const struct wpa_supplicant *src)
 931 {
 932         struct wpa_config *d;
 933         const struct wpa_config *s;
 934
 935         d = dst->conf;
 936         s = src->conf;
 937
 938 #define C(n) if (s->n) d->n = os_strdup(s->n)
 939         C(device_name);
 940         C(manufacturer);
 941         C(model_name);
 942         C(model_number);
 943         C(serial_number);
 944         C(config_methods);
 945 #undef C
 946
 947         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
 948         os_memcpy(d->sec_device_type, s->sec_device_type,
 949                   sizeof(d->sec_device_type));
 950         d->num_sec_device_types = s->num_sec_device_types;
 951
 952         d->p2p_group_idle = s->p2p_group_idle;
 953         d->p2p_intra_bss = s->p2p_intra_bss;
 954         d->persistent_reconnect = s->persistent_reconnect;
 955         d->max_num_sta = s->max_num_sta;
 956         d->pbc_in_m1 = s->pbc_in_m1;
 957 }
 958
 959
 960 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 961                                         enum wpa_driver_if_type type)
 962 {
 963         char ifname[120], force_ifname[120];
 964
 965         if (wpa_s->pending_interface_name[0]) {
 966                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
 967                            "- skip creation of a new one");
 968                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
 969                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
 970                                    "unknown?! ifname='%s'",
 971                                    wpa_s->pending_interface_name);
 972                         return -1;
 973                 }
 974                 return 0;
 975         }
 976
 977         os_snprintf(ifname, sizeof(ifname), "p2p-%s-%d", wpa_s->ifname,
 978                     wpa_s->p2p_group_idx);
 979         if (os_strlen(ifname) >= IFNAMSIZ &&
 980             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
 981                 /* Try to avoid going over the IFNAMSIZ length limit */
 982                 os_snprintf(ifname, sizeof(ifname), "p2p-%d",
 983                             wpa_s->p2p_group_idx);
 984         }
 985         force_ifname[0] = '\0';
 986
 987         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
 988                    ifname);
 989         wpa_s->p2p_group_idx++;
 990
 991         wpa_s->pending_interface_type = type;
 992         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
 993                            wpa_s->pending_interface_addr, NULL) < 0) {
 994                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
 995                            "interface");
 996                 return -1;
 997         }
 998
 999         if (force_ifname[0]) {
1000                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1001                            force_ifname);
1002                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1003                            sizeof(wpa_s->pending_interface_name));
1004         } else
1005                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1006                            sizeof(wpa_s->pending_interface_name));
1007         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1008                    MACSTR, wpa_s->pending_interface_name,
1009                    MAC2STR(wpa_s->pending_interface_addr));
1010
1011         return 0;
1012 }
1013
1014
1015 static void wpas_p2p_remove_pending_group_interface(
1016         struct wpa_supplicant *wpa_s)
1017 {
1018         if (!wpa_s->pending_interface_name[0] ||
1019             is_zero_ether_addr(wpa_s->pending_interface_addr))
1020                 return; /* No pending virtual interface */
1021
1022         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1023                    wpa_s->pending_interface_name);
1024         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1025                           wpa_s->pending_interface_name);
1026         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1027         wpa_s->pending_interface_name[0] = '\0';
1028 }
1029
1030
1031 static struct wpa_supplicant *
1032 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1033 {
1034         struct wpa_interface iface;
1035         struct wpa_supplicant *group_wpa_s;
1036
1037         if (!wpa_s->pending_interface_name[0]) {
1038                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1039                 if (!wpas_p2p_create_iface(wpa_s))
1040                         return NULL;
1041                 /*
1042                  * Something has forced us to remove the pending interface; try
1043                  * to create a new one and hope for the best that we will get
1044                  * the same local address.
1045                  */
1046                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1047                                                  WPA_IF_P2P_CLIENT) < 0)
1048                         return NULL;
1049         }
1050
1051         os_memset(&iface, 0, sizeof(iface));
1052         iface.ifname = wpa_s->pending_interface_name;
1053         iface.driver = wpa_s->driver->name;
1054         iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1055         iface.driver_param = wpa_s->conf->driver_param;
1056         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1057         if (group_wpa_s == NULL) {
1058                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1059                            "wpa_supplicant interface");
1060                 return NULL;
1061         }
1062         wpa_s->pending_interface_name[0] = '\0';
1063         group_wpa_s->parent = wpa_s;
1064         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1065                 P2P_GROUP_INTERFACE_CLIENT;
1066         wpa_s->global->p2p_group_formation = group_wpa_s;
1067
1068         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1069
1070         return group_wpa_s;
1071 }
1072
1073
1074 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1075                                              void *timeout_ctx)
1076 {
1077         struct wpa_supplicant *wpa_s = eloop_ctx;
1078         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1079         if (wpa_s->global->p2p)
1080                 p2p_group_formation_failed(wpa_s->global->p2p);
1081         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1082                 wpa_drv_p2p_group_formation_failed(wpa_s);
1083         wpas_group_formation_completed(wpa_s, 0);
1084 }
1085
1086
1087 void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1088 {
1089         struct wpa_supplicant *wpa_s = ctx;
1090
1091         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1092                 wpa_drv_cancel_remain_on_channel(wpa_s);
1093                 wpa_s->off_channel_freq = 0;
1094                 wpa_s->roc_waiting_drv_freq = 0;
1095         }
1096
1097         if (res->status) {
1098                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_FAILURE "status=%d",
1099                         res->status);
1100                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1101                 wpas_p2p_remove_pending_group_interface(wpa_s);
1102                 return;
1103         }
1104
1105         if (wpa_s->p2p_go_ht40)
1106                 res->ht40 = 1;
1107
1108         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS);
1109         wpas_notify_p2p_go_neg_completed(wpa_s, res);
1110
1111         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1112                 struct wpa_ssid *ssid;
1113                 ssid = wpa_config_get_network(wpa_s->conf,
1114                                               wpa_s->p2p_persistent_id);
1115                 if (ssid && ssid->disabled == 2 &&
1116                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1117                         size_t len = os_strlen(ssid->passphrase);
1118                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1119                                    "on requested persistent group");
1120                         os_memcpy(res->passphrase, ssid->passphrase, len);
1121                         res->passphrase[len] = '\0';
1122                 }
1123         }
1124
1125         if (wpa_s->create_p2p_iface) {
1126                 struct wpa_supplicant *group_wpa_s =
1127                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1128                 if (group_wpa_s == NULL) {
1129                         wpas_p2p_remove_pending_group_interface(wpa_s);
1130                         return;
1131                 }
1132                 if (group_wpa_s != wpa_s) {
1133                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1134                                   sizeof(group_wpa_s->p2p_pin));
1135                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1136                 }
1137                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1138                 wpa_s->pending_interface_name[0] = '\0';
1139                 group_wpa_s->p2p_in_provisioning = 1;
1140
1141                 if (res->role_go)
1142                         wpas_start_wps_go(group_wpa_s, res, 1);
1143                 else
1144                         wpas_start_wps_enrollee(group_wpa_s, res);
1145         } else {
1146                 wpa_s->p2p_in_provisioning = 1;
1147                 wpa_s->global->p2p_group_formation = wpa_s;
1148
1149                 if (res->role_go)
1150                         wpas_start_wps_go(wpa_s, res, 1);
1151                 else
1152                         wpas_start_wps_enrollee(ctx, res);
1153         }
1154
1155         wpa_s->p2p_long_listen = 0;
1156         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1157
1158         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1159         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1160                                (res->peer_config_timeout % 100) * 10000,
1161                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1162 }
1163
1164
1165 void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1166 {
1167         struct wpa_supplicant *wpa_s = ctx;
1168         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1169                 " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1170
1171         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1172 }
1173
1174
1175 void wpas_dev_found(void *ctx, const u8 *addr,
1176                     const struct p2p_peer_info *info,
1177                     int new_device)
1178 {
1179 #ifndef CONFIG_NO_STDOUT_DEBUG
1180         struct wpa_supplicant *wpa_s = ctx;
1181         char devtype[WPS_DEV_TYPE_BUFSIZE];
1182
1183         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1184                 " p2p_dev_addr=" MACSTR
1185                 " pri_dev_type=%s name='%s' config_methods=0x%x "
1186                 "dev_capab=0x%x group_capab=0x%x",
1187                 MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1188                 wps_dev_type_bin2str(info->pri_dev_type, devtype,
1189                                      sizeof(devtype)),
1190                 info->device_name, info->config_methods,
1191                 info->dev_capab, info->group_capab);
1192 #endif /* CONFIG_NO_STDOUT_DEBUG */
1193
1194         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1195 }
1196
1197
1198 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1199 {
1200         struct wpa_supplicant *wpa_s = ctx;
1201
1202         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1203                 "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1204
1205         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1206 }
1207
1208
1209 static int wpas_start_listen(void *ctx, unsigned int freq,
1210                              unsigned int duration,
1211                              const struct wpabuf *probe_resp_ie)
1212 {
1213         struct wpa_supplicant *wpa_s = ctx;
1214
1215         wpa_drv_set_ap_wps_ie(wpa_s, NULL, probe_resp_ie, NULL);
1216
1217         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1218                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1219                            "report received Probe Request frames");
1220                 return -1;
1221         }
1222
1223         wpa_s->pending_listen_freq = freq;
1224         wpa_s->pending_listen_duration = duration;
1225
1226         if (wpa_drv_remain_on_channel(wpa_s, freq, duration) < 0) {
1227                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1228                            "to remain on channel (%u MHz) for Listen "
1229                            "state", freq);
1230                 wpa_s->pending_listen_freq = 0;
1231                 return -1;
1232         }
1233         wpa_s->off_channel_freq = 0;
1234         wpa_s->roc_waiting_drv_freq = freq;
1235
1236         return 0;
1237 }
1238
1239
1240 static void wpas_stop_listen(void *ctx)
1241 {
1242         struct wpa_supplicant *wpa_s = ctx;
1243         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1244                 wpa_drv_cancel_remain_on_channel(wpa_s);
1245                 wpa_s->off_channel_freq = 0;
1246                 wpa_s->roc_waiting_drv_freq = 0;
1247         }
1248         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1249         wpa_drv_probe_req_report(wpa_s, 0);
1250 }
1251
1252
1253 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1254 {
1255         struct wpa_supplicant *wpa_s = ctx;
1256         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1257 }
1258
1259
1260 /*
1261  * DNS Header section is used only to calculate compression pointers, so the
1262  * contents of this data does not matter, but the length needs to be reserved
1263  * in the virtual packet.
1264  */
1265 #define DNS_HEADER_LEN 12
1266
1267 /*
1268  * 27-octet in-memory packet from P2P specification containing two implied
1269  * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN
1270  */
1271 #define P2P_SD_IN_MEMORY_LEN 27
1272
1273 static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start,
1274                                        u8 **spos, const u8 *end)
1275 {
1276         while (*spos < end) {
1277                 u8 val = ((*spos)[0] & 0xc0) >> 6;
1278                 int len;
1279
1280                 if (val == 1 || val == 2) {
1281                         /* These are reserved values in RFC 1035 */
1282                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1283                                    "sequence starting with 0x%x", val);
1284                         return -1;
1285                 }
1286
1287                 if (val == 3) {
1288                         u16 offset;
1289                         u8 *spos_tmp;
1290
1291                         /* Offset */
1292                         if (*spos + 2 > end) {
1293                                 wpa_printf(MSG_DEBUG, "P2P: No room for full "
1294                                            "DNS offset field");
1295                                 return -1;
1296                         }
1297
1298                         offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1];
1299                         if (offset >= *spos - start) {
1300                                 wpa_printf(MSG_DEBUG, "P2P: Invalid DNS "
1301                                            "pointer offset %u", offset);
1302                                 return -1;
1303                         }
1304
1305                         (*spos) += 2;
1306                         spos_tmp = start + offset;
1307                         return p2p_sd_dns_uncompress_label(upos, uend, start,
1308                                                            &spos_tmp,
1309                                                            *spos - 2);
1310                 }
1311
1312                 /* Label */
1313                 len = (*spos)[0] & 0x3f;
1314                 if (len == 0)
1315                         return 0;
1316
1317                 (*spos)++;
1318                 if (*spos + len > end) {
1319                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1320                                    "sequence - no room for label with length "
1321                                    "%u", len);
1322                         return -1;
1323                 }
1324
1325                 if (*upos + len + 2 > uend)
1326                         return -2;
1327
1328                 os_memcpy(*upos, *spos, len);
1329                 *spos += len;
1330                 *upos += len;
1331                 (*upos)[0] = '.';
1332                 (*upos)++;
1333                 (*upos)[0] = '\0';
1334         }
1335
1336         return 0;
1337 }
1338
1339
1340 /* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet.
1341  * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is
1342  * not large enough */
1343 static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg,
1344                                  size_t msg_len, size_t offset)
1345 {
1346         /* 27-octet in-memory packet from P2P specification */
1347         const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01"
1348                 "\x04_udp\xC0\x11\x00\x0C\x00\x01";
1349         u8 *tmp, *end, *spos;
1350         char *upos, *uend;
1351         int ret = 0;
1352
1353         if (buf_len < 2)
1354                 return -1;
1355         if (offset > msg_len)
1356                 return -1;
1357
1358         tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len);
1359         if (tmp == NULL)
1360                 return -1;
1361         spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN;
1362         end = spos + msg_len;
1363         spos += offset;
1364
1365         os_memset(tmp, 0, DNS_HEADER_LEN);
1366         os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN);
1367         os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len);
1368
1369         upos = buf;
1370         uend = buf + buf_len;
1371
1372         ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end);
1373         if (ret) {
1374                 os_free(tmp);
1375                 return ret;
1376         }
1377
1378         if (upos == buf) {
1379                 upos[0] = '.';
1380                 upos[1] = '\0';
1381         } else if (upos[-1] == '.')
1382                 upos[-1] = '\0';
1383
1384         os_free(tmp);
1385         return 0;
1386 }
1387
1388
1389 static struct p2p_srv_bonjour *
1390 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1391                              const struct wpabuf *query)
1392 {
1393         struct p2p_srv_bonjour *bsrv;
1394         size_t len;
1395
1396         len = wpabuf_len(query);
1397         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1398                          struct p2p_srv_bonjour, list) {
1399                 if (len == wpabuf_len(bsrv->query) &&
1400                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1401                               len) == 0)
1402                         return bsrv;
1403         }
1404         return NULL;
1405 }
1406
1407
1408 static struct p2p_srv_upnp *
1409 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
1410                           const char *service)
1411 {
1412         struct p2p_srv_upnp *usrv;
1413
1414         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1415                          struct p2p_srv_upnp, list) {
1416                 if (version == usrv->version &&
1417                     os_strcmp(service, usrv->service) == 0)
1418                         return usrv;
1419         }
1420         return NULL;
1421 }
1422
1423
1424 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
1425                                         u8 srv_trans_id)
1426 {
1427         u8 *len_pos;
1428
1429         if (wpabuf_tailroom(resp) < 5)
1430                 return;
1431
1432         /* Length (to be filled) */
1433         len_pos = wpabuf_put(resp, 2);
1434         wpabuf_put_u8(resp, srv_proto);
1435         wpabuf_put_u8(resp, srv_trans_id);
1436         /* Status Code */
1437         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
1438         /* Response Data: empty */
1439         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1440 }
1441
1442
1443 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
1444                                 struct wpabuf *resp, u8 srv_trans_id)
1445 {
1446         struct p2p_srv_bonjour *bsrv;
1447         u8 *len_pos;
1448
1449         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
1450
1451         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1452                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1453                 return;
1454         }
1455
1456         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1457                          struct p2p_srv_bonjour, list) {
1458                 if (wpabuf_tailroom(resp) <
1459                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
1460                         return;
1461                 /* Length (to be filled) */
1462                 len_pos = wpabuf_put(resp, 2);
1463                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1464                 wpabuf_put_u8(resp, srv_trans_id);
1465                 /* Status Code */
1466                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1467                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1468                                   wpabuf_head(bsrv->resp),
1469                                   wpabuf_len(bsrv->resp));
1470                 /* Response Data */
1471                 wpabuf_put_buf(resp, bsrv->query); /* Key */
1472                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1473                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1474                              2);
1475         }
1476 }
1477
1478
1479 static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query,
1480                                size_t query_len)
1481 {
1482         char str_rx[256], str_srv[256];
1483
1484         if (query_len < 3 || wpabuf_len(bsrv->query) < 3)
1485                 return 0; /* Too short to include DNS Type and Version */
1486         if (os_memcmp(query + query_len - 3,
1487                       wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3,
1488                       3) != 0)
1489                 return 0; /* Mismatch in DNS Type or Version */
1490         if (query_len == wpabuf_len(bsrv->query) &&
1491             os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0)
1492                 return 1; /* Binary match */
1493
1494         if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3,
1495                                   0))
1496                 return 0; /* Failed to uncompress query */
1497         if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv),
1498                                   wpabuf_head(bsrv->query),
1499                                   wpabuf_len(bsrv->query) - 3, 0))
1500                 return 0; /* Failed to uncompress service */
1501
1502         return os_strcmp(str_rx, str_srv) == 0;
1503 }
1504
1505
1506 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
1507                                 struct wpabuf *resp, u8 srv_trans_id,
1508                                 const u8 *query, size_t query_len)
1509 {
1510         struct p2p_srv_bonjour *bsrv;
1511         u8 *len_pos;
1512         int matches = 0;
1513
1514         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
1515                           query, query_len);
1516         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1517                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
1518                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
1519                                             srv_trans_id);
1520                 return;
1521         }
1522
1523         if (query_len == 0) {
1524                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1525                 return;
1526         }
1527
1528         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1529                          struct p2p_srv_bonjour, list) {
1530                 if (!match_bonjour_query(bsrv, query, query_len))
1531                         continue;
1532
1533                 if (wpabuf_tailroom(resp) <
1534                     5 + query_len + wpabuf_len(bsrv->resp))
1535                         return;
1536
1537                 matches++;
1538
1539                 /* Length (to be filled) */
1540                 len_pos = wpabuf_put(resp, 2);
1541                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1542                 wpabuf_put_u8(resp, srv_trans_id);
1543
1544                 /* Status Code */
1545                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1546                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
1547                                   wpabuf_head(bsrv->resp),
1548                                   wpabuf_len(bsrv->resp));
1549
1550                 /* Response Data */
1551                 wpabuf_put_data(resp, query, query_len); /* Key */
1552                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
1553
1554                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1555         }
1556
1557         if (matches == 0) {
1558                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
1559                            "available");
1560                 if (wpabuf_tailroom(resp) < 5)
1561                         return;
1562
1563                 /* Length (to be filled) */
1564                 len_pos = wpabuf_put(resp, 2);
1565                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
1566                 wpabuf_put_u8(resp, srv_trans_id);
1567
1568                 /* Status Code */
1569                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1570                 /* Response Data: empty */
1571                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1572                              2);
1573         }
1574 }
1575
1576
1577 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
1578                              struct wpabuf *resp, u8 srv_trans_id)
1579 {
1580         struct p2p_srv_upnp *usrv;
1581         u8 *len_pos;
1582
1583         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
1584
1585         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1586                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1587                 return;
1588         }
1589
1590         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1591                          struct p2p_srv_upnp, list) {
1592                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
1593                         return;
1594
1595                 /* Length (to be filled) */
1596                 len_pos = wpabuf_put(resp, 2);
1597                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
1598                 wpabuf_put_u8(resp, srv_trans_id);
1599
1600                 /* Status Code */
1601                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1602                 /* Response Data */
1603                 wpabuf_put_u8(resp, usrv->version);
1604                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1605                            usrv->service);
1606                 wpabuf_put_str(resp, usrv->service);
1607                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
1608                              2);
1609         }
1610 }
1611
1612
1613 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
1614                              struct wpabuf *resp, u8 srv_trans_id,
1615                              const u8 *query, size_t query_len)
1616 {
1617         struct p2p_srv_upnp *usrv;
1618         u8 *len_pos;
1619         u8 version;
1620         char *str;
1621         int count = 0;
1622
1623         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
1624                           query, query_len);
1625
1626         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
1627                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
1628                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
1629                                             srv_trans_id);
1630                 return;
1631         }
1632
1633         if (query_len == 0) {
1634                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1635                 return;
1636         }
1637
1638         if (wpabuf_tailroom(resp) < 5)
1639                 return;
1640
1641         /* Length (to be filled) */
1642         len_pos = wpabuf_put(resp, 2);
1643         wpabuf_put_u8(resp, P2P_SERV_UPNP);
1644         wpabuf_put_u8(resp, srv_trans_id);
1645
1646         version = query[0];
1647         str = os_malloc(query_len);
1648         if (str == NULL)
1649                 return;
1650         os_memcpy(str, query + 1, query_len - 1);
1651         str[query_len - 1] = '\0';
1652
1653         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
1654                          struct p2p_srv_upnp, list) {
1655                 if (version != usrv->version)
1656                         continue;
1657
1658                 if (os_strcmp(str, "ssdp:all") != 0 &&
1659                     os_strstr(usrv->service, str) == NULL)
1660                         continue;
1661
1662                 if (wpabuf_tailroom(resp) < 2)
1663                         break;
1664                 if (count == 0) {
1665                         /* Status Code */
1666                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
1667                         /* Response Data */
1668                         wpabuf_put_u8(resp, version);
1669                 } else
1670                         wpabuf_put_u8(resp, ',');
1671
1672                 count++;
1673
1674                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
1675                            usrv->service);
1676                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
1677                         break;
1678                 wpabuf_put_str(resp, usrv->service);
1679         }
1680         os_free(str);
1681
1682         if (count == 0) {
1683                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
1684                            "available");
1685                 /* Status Code */
1686                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
1687                 /* Response Data: empty */
1688         }
1689
1690         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1691 }
1692
1693
1694 #ifdef CONFIG_WIFI_DISPLAY
1695 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
1696                             struct wpabuf *resp, u8 srv_trans_id,
1697                             const u8 *query, size_t query_len)
1698 {
1699         const u8 *pos;
1700         u8 role;
1701         u8 *len_pos;
1702
1703         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
1704
1705         if (!wpa_s->global->wifi_display) {
1706                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
1707                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
1708                                             srv_trans_id);
1709                 return;
1710         }
1711
1712         if (query_len < 1) {
1713                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
1714                            "Role");
1715                 return;
1716         }
1717
1718         if (wpabuf_tailroom(resp) < 5)
1719                 return;
1720
1721         pos = query;
1722         role = *pos++;
1723         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
1724
1725         /* TODO: role specific handling */
1726
1727         /* Length (to be filled) */
1728         len_pos = wpabuf_put(resp, 2);
1729         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
1730         wpabuf_put_u8(resp, srv_trans_id);
1731         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
1732
1733         while (pos < query + query_len) {
1734                 if (*pos < MAX_WFD_SUBELEMS &&
1735                     wpa_s->global->wfd_subelem[*pos] &&
1736                     wpabuf_tailroom(resp) >=
1737                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
1738                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
1739                                    "subelement %u", *pos);
1740                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
1741                 }
1742                 pos++;
1743         }
1744
1745         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
1746 }
1747 #endif /* CONFIG_WIFI_DISPLAY */
1748
1749
1750 void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
1751                      u16 update_indic, const u8 *tlvs, size_t tlvs_len)
1752 {
1753         struct wpa_supplicant *wpa_s = ctx;
1754         const u8 *pos = tlvs;
1755         const u8 *end = tlvs + tlvs_len;
1756         const u8 *tlv_end;
1757         u16 slen;
1758         struct wpabuf *resp;
1759         u8 srv_proto, srv_trans_id;
1760         size_t buf_len;
1761         char *buf;
1762
1763         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
1764                     tlvs, tlvs_len);
1765         buf_len = 2 * tlvs_len + 1;
1766         buf = os_malloc(buf_len);
1767         if (buf) {
1768                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1769                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
1770                              MACSTR " %u %u %s",
1771                              freq, MAC2STR(sa), dialog_token, update_indic,
1772                              buf);
1773                 os_free(buf);
1774         }
1775
1776         if (wpa_s->p2p_sd_over_ctrl_iface) {
1777                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1778                                            update_indic, tlvs, tlvs_len);
1779                 return; /* to be processed by an external program */
1780         }
1781
1782         resp = wpabuf_alloc(10000);
1783         if (resp == NULL)
1784                 return;
1785
1786         while (pos + 1 < end) {
1787                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
1788                 slen = WPA_GET_LE16(pos);
1789                 pos += 2;
1790                 if (pos + slen > end || slen < 2) {
1791                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
1792                                    "length");
1793                         wpabuf_free(resp);
1794                         return;
1795                 }
1796                 tlv_end = pos + slen;
1797
1798                 srv_proto = *pos++;
1799                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1800                            srv_proto);
1801                 srv_trans_id = *pos++;
1802                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1803                            srv_trans_id);
1804
1805                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
1806                             pos, tlv_end - pos);
1807
1808
1809                 if (wpa_s->force_long_sd) {
1810                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
1811                                    "response");
1812                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1813                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1814                         goto done;
1815                 }
1816
1817                 switch (srv_proto) {
1818                 case P2P_SERV_ALL_SERVICES:
1819                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
1820                                    "for all services");
1821                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
1822                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
1823                                 wpa_printf(MSG_DEBUG, "P2P: No service "
1824                                            "discovery protocols available");
1825                                 wpas_sd_add_proto_not_avail(
1826                                         resp, P2P_SERV_ALL_SERVICES,
1827                                         srv_trans_id);
1828                                 break;
1829                         }
1830                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
1831                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
1832                         break;
1833                 case P2P_SERV_BONJOUR:
1834                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
1835                                             pos, tlv_end - pos);
1836                         break;
1837                 case P2P_SERV_UPNP:
1838                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
1839                                          pos, tlv_end - pos);
1840                         break;
1841 #ifdef CONFIG_WIFI_DISPLAY
1842                 case P2P_SERV_WIFI_DISPLAY:
1843                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
1844                                         pos, tlv_end - pos);
1845                         break;
1846 #endif /* CONFIG_WIFI_DISPLAY */
1847                 default:
1848                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
1849                                    "protocol %u", srv_proto);
1850                         wpas_sd_add_proto_not_avail(resp, srv_proto,
1851                                                     srv_trans_id);
1852                         break;
1853                 }
1854
1855                 pos = tlv_end;
1856         }
1857
1858 done:
1859         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
1860                                    update_indic, tlvs, tlvs_len);
1861
1862         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
1863
1864         wpabuf_free(resp);
1865 }
1866
1867
1868 void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
1869                       const u8 *tlvs, size_t tlvs_len)
1870 {
1871         struct wpa_supplicant *wpa_s = ctx;
1872         const u8 *pos = tlvs;
1873         const u8 *end = tlvs + tlvs_len;
1874         const u8 *tlv_end;
1875         u16 slen;
1876         size_t buf_len;
1877         char *buf;
1878
1879         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
1880                     tlvs, tlvs_len);
1881         if (tlvs_len > 1500) {
1882                 /* TODO: better way for handling this */
1883                 wpa_msg_ctrl(wpa_s, MSG_INFO,
1884                              P2P_EVENT_SERV_DISC_RESP MACSTR
1885                              " %u <long response: %u bytes>",
1886                              MAC2STR(sa), update_indic,
1887                              (unsigned int) tlvs_len);
1888         } else {
1889                 buf_len = 2 * tlvs_len + 1;
1890                 buf = os_malloc(buf_len);
1891                 if (buf) {
1892                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
1893                         wpa_msg_ctrl(wpa_s, MSG_INFO,
1894                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
1895                                      MAC2STR(sa), update_indic, buf);
1896                         os_free(buf);
1897                 }
1898         }
1899
1900         while (pos < end) {
1901                 u8 srv_proto, srv_trans_id, status;
1902
1903                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
1904                 slen = WPA_GET_LE16(pos);
1905                 pos += 2;
1906                 if (pos + slen > end || slen < 3) {
1907                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
1908                                    "length");
1909                         return;
1910                 }
1911                 tlv_end = pos + slen;
1912
1913                 srv_proto = *pos++;
1914                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
1915                            srv_proto);
1916                 srv_trans_id = *pos++;
1917                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
1918                            srv_trans_id);
1919                 status = *pos++;
1920                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
1921                            status);
1922
1923                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
1924                             pos, tlv_end - pos);
1925
1926                 pos = tlv_end;
1927         }
1928
1929         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
1930 }
1931
1932
1933 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
1934                         const struct wpabuf *tlvs)
1935 {
1936         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1937                 return wpa_drv_p2p_sd_request(wpa_s, dst, tlvs);
1938         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1939                 return 0;
1940         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
1941 }
1942
1943
1944 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
1945                              u8 version, const char *query)
1946 {
1947         struct wpabuf *tlvs;
1948         u64 ret;
1949
1950         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
1951         if (tlvs == NULL)
1952                 return 0;
1953         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
1954         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
1955         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
1956         wpabuf_put_u8(tlvs, version);
1957         wpabuf_put_str(tlvs, query);
1958         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
1959         wpabuf_free(tlvs);
1960         return ret;
1961 }
1962
1963
1964 #ifdef CONFIG_WIFI_DISPLAY
1965
1966 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
1967                                    const struct wpabuf *tlvs)
1968 {
1969         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
1970                 return 0;
1971         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
1972                 return 0;
1973         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
1974 }
1975
1976
1977 #define MAX_WFD_SD_SUBELEMS 20
1978
1979 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
1980                                 const char *subelems)
1981 {
1982         u8 *len;
1983         const char *pos;
1984         int val;
1985         int count = 0;
1986
1987         len = wpabuf_put(tlvs, 2);
1988         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
1989         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
1990
1991         wpabuf_put_u8(tlvs, role);
1992
1993         pos = subelems;
1994         while (*pos) {
1995                 val = atoi(pos);
1996                 if (val >= 0 && val < 256) {
1997                         wpabuf_put_u8(tlvs, val);
1998                         count++;
1999                         if (count == MAX_WFD_SD_SUBELEMS)
2000                                 break;
2001                 }
2002                 pos = os_strchr(pos + 1, ',');
2003                 if (pos == NULL)
2004                         break;
2005                 pos++;
2006         }
2007
2008         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
2009 }
2010
2011
2012 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
2013                                      const u8 *dst, const char *role)
2014 {
2015         struct wpabuf *tlvs;
2016         u64 ret;
2017         const char *subelems;
2018         u8 id = 1;
2019
2020         subelems = os_strchr(role, ' ');
2021         if (subelems == NULL)
2022                 return 0;
2023         subelems++;
2024
2025         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
2026         if (tlvs == NULL)
2027                 return 0;
2028
2029         if (os_strstr(role, "[source]"))
2030                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
2031         if (os_strstr(role, "[pri-sink]"))
2032                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
2033         if (os_strstr(role, "[sec-sink]"))
2034                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
2035         if (os_strstr(role, "[source+sink]"))
2036                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
2037
2038         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
2039         wpabuf_free(tlvs);
2040         return ret;
2041 }
2042
2043 #endif /* CONFIG_WIFI_DISPLAY */
2044
2045
2046 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
2047 {
2048         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
2049                 return wpa_drv_p2p_sd_cancel_request(wpa_s, req);
2050         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2051                 return -1;
2052         return p2p_sd_cancel_request(wpa_s->global->p2p,
2053                                      (void *) (uintptr_t) req);
2054 }
2055
2056
2057 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
2058                           const u8 *dst, u8 dialog_token,
2059                           const struct wpabuf *resp_tlvs)
2060 {
2061         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2062                 wpa_drv_p2p_sd_response(wpa_s, freq, dst, dialog_token,
2063                                         resp_tlvs);
2064                 return;
2065         }
2066         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2067                 return;
2068         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
2069                         resp_tlvs);
2070 }
2071
2072
2073 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
2074 {
2075         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2076                 wpa_drv_p2p_service_update(wpa_s);
2077                 return;
2078         }
2079         if (wpa_s->global->p2p)
2080                 p2p_sd_service_update(wpa_s->global->p2p);
2081 }
2082
2083
2084 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
2085 {
2086         dl_list_del(&bsrv->list);
2087         wpabuf_free(bsrv->query);
2088         wpabuf_free(bsrv->resp);
2089         os_free(bsrv);
2090 }
2091
2092
2093 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
2094 {
2095         dl_list_del(&usrv->list);
2096         os_free(usrv->service);
2097         os_free(usrv);
2098 }
2099
2100
2101 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
2102 {
2103         struct p2p_srv_bonjour *bsrv, *bn;
2104         struct p2p_srv_upnp *usrv, *un;
2105
2106         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
2107                               struct p2p_srv_bonjour, list)
2108                 wpas_p2p_srv_bonjour_free(bsrv);
2109
2110         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
2111                               struct p2p_srv_upnp, list)
2112                 wpas_p2p_srv_upnp_free(usrv);
2113
2114         wpas_p2p_sd_service_update(wpa_s);
2115 }
2116
2117
2118 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
2119                                  struct wpabuf *query, struct wpabuf *resp)
2120 {
2121         struct p2p_srv_bonjour *bsrv;
2122
2123         bsrv = os_zalloc(sizeof(*bsrv));
2124         if (bsrv == NULL)
2125                 return -1;
2126         bsrv->query = query;
2127         bsrv->resp = resp;
2128         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
2129
2130         wpas_p2p_sd_service_update(wpa_s);
2131         return 0;
2132 }
2133
2134
2135 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
2136                                  const struct wpabuf *query)
2137 {
2138         struct p2p_srv_bonjour *bsrv;
2139
2140         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
2141         if (bsrv == NULL)
2142                 return -1;
2143         wpas_p2p_srv_bonjour_free(bsrv);
2144         wpas_p2p_sd_service_update(wpa_s);
2145         return 0;
2146 }
2147
2148
2149 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2150                               const char *service)
2151 {
2152         struct p2p_srv_upnp *usrv;
2153
2154         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2155                 return 0; /* Already listed */
2156         usrv = os_zalloc(sizeof(*usrv));
2157         if (usrv == NULL)
2158                 return -1;
2159         usrv->version = version;
2160         usrv->service = os_strdup(service);
2161         if (usrv->service == NULL) {
2162                 os_free(usrv);
2163                 return -1;
2164         }
2165         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2166
2167         wpas_p2p_sd_service_update(wpa_s);
2168         return 0;
2169 }
2170
2171
2172 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2173                               const char *service)
2174 {
2175         struct p2p_srv_upnp *usrv;
2176
2177         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2178         if (usrv == NULL)
2179                 return -1;
2180         wpas_p2p_srv_upnp_free(usrv);
2181         wpas_p2p_sd_service_update(wpa_s);
2182         return 0;
2183 }
2184
2185
2186 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2187                                          const u8 *peer, const char *params,
2188                                          unsigned int generated_pin)
2189 {
2190         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR " %08d%s",
2191                 MAC2STR(peer), generated_pin, params);
2192 }
2193
2194
2195 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2196                                         const u8 *peer, const char *params)
2197 {
2198         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR "%s",
2199                 MAC2STR(peer), params);
2200 }
2201
2202
2203 void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2204                         const u8 *dev_addr, const u8 *pri_dev_type,
2205                         const char *dev_name, u16 supp_config_methods,
2206                         u8 dev_capab, u8 group_capab, const u8 *group_id,
2207                         size_t group_id_len)
2208 {
2209         struct wpa_supplicant *wpa_s = ctx;
2210         char devtype[WPS_DEV_TYPE_BUFSIZE];
2211         char params[300];
2212         u8 empty_dev_type[8];
2213         unsigned int generated_pin = 0;
2214         struct wpa_supplicant *group = NULL;
2215
2216         if (group_id) {
2217                 for (group = wpa_s->global->ifaces; group; group = group->next)
2218                 {
2219                         struct wpa_ssid *s = group->current_ssid;
2220                         if (s != NULL &&
2221                             s->mode == WPAS_MODE_P2P_GO &&
2222                             group_id_len - ETH_ALEN == s->ssid_len &&
2223                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2224                                       s->ssid_len) == 0)
2225                                 break;
2226                 }
2227         }
2228
2229         if (pri_dev_type == NULL) {
2230                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2231                 pri_dev_type = empty_dev_type;
2232         }
2233         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2234                     " pri_dev_type=%s name='%s' config_methods=0x%x "
2235                     "dev_capab=0x%x group_capab=0x%x%s%s",
2236                     MAC2STR(dev_addr),
2237                     wps_dev_type_bin2str(pri_dev_type, devtype,
2238                                          sizeof(devtype)),
2239                     dev_name, supp_config_methods, dev_capab, group_capab,
2240                     group ? " group=" : "",
2241                     group ? group->ifname : "");
2242         params[sizeof(params) - 1] = '\0';
2243
2244         if (config_methods & WPS_CONFIG_DISPLAY) {
2245                 generated_pin = wps_generate_pin();
2246                 wpas_prov_disc_local_display(wpa_s, peer, params,
2247                                              generated_pin);
2248         } else if (config_methods & WPS_CONFIG_KEYPAD)
2249                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2250         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2251                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ MACSTR
2252                         "%s", MAC2STR(peer), params);
2253
2254         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2255                                             P2P_PROV_DISC_SUCCESS,
2256                                             config_methods, generated_pin);
2257 }
2258
2259
2260 void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2261 {
2262         struct wpa_supplicant *wpa_s = ctx;
2263         unsigned int generated_pin = 0;
2264         char params[20];
2265
2266         if (wpa_s->pending_pd_before_join &&
2267             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2268              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2269                 wpa_s->pending_pd_before_join = 0;
2270                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2271                            "join-existing-group operation");
2272                 wpas_p2p_join_start(wpa_s);
2273                 return;
2274         }
2275
2276         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2277             wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2278                 os_snprintf(params, sizeof(params), " peer_go=%d",
2279                             wpa_s->pending_pd_use == AUTO_PD_JOIN);
2280         else
2281                 params[0] = '\0';
2282
2283         if (config_methods & WPS_CONFIG_DISPLAY)
2284                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2285         else if (config_methods & WPS_CONFIG_KEYPAD) {
2286                 generated_pin = wps_generate_pin();
2287                 wpas_prov_disc_local_display(wpa_s, peer, params,
2288                                              generated_pin);
2289         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2290                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP MACSTR
2291                         "%s", MAC2STR(peer), params);
2292
2293         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2294                                             P2P_PROV_DISC_SUCCESS,
2295                                             config_methods, generated_pin);
2296 }
2297
2298
2299 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2300                                 enum p2p_prov_disc_status status)
2301 {
2302         struct wpa_supplicant *wpa_s = ctx;
2303
2304         if (wpa_s->p2p_fallback_to_go_neg) {
2305                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2306                         "failed - fall back to GO Negotiation");
2307                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2308                 return;
2309         }
2310
2311         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2312                 wpa_s->pending_pd_before_join = 0;
2313                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2314                            "join-existing-group operation (no ACK for PD "
2315                            "Req attempts)");
2316                 wpas_p2p_join_start(wpa_s);
2317                 return;
2318         }
2319
2320         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2321                 " p2p_dev_addr=" MACSTR " status=%d",
2322                 MAC2STR(peer), status);
2323
2324         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2325                                             status, 0, 0);
2326 }
2327
2328
2329 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2330                                   const u8 *go_dev_addr, const u8 *ssid,
2331                                   size_t ssid_len, int *go, u8 *group_bssid,
2332                                   int *force_freq, int persistent_group)
2333 {
2334         struct wpa_supplicant *wpa_s = ctx;
2335         struct wpa_ssid *s;
2336         u8 cur_bssid[ETH_ALEN];
2337         int res;
2338         struct wpa_supplicant *grp;
2339
2340         if (!persistent_group) {
2341                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2342                            " to join an active group", MAC2STR(sa));
2343                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2344                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2345                      == 0 ||
2346                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2347                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2348                                    "authorized invitation");
2349                         goto accept_inv;
2350                 }
2351                 /*
2352                  * Do not accept the invitation automatically; notify user and
2353                  * request approval.
2354                  */
2355                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2356         }
2357
2358         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2359         if (grp) {
2360                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2361                            "running persistent group");
2362                 if (*go)
2363                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2364                 goto accept_inv;
2365         }
2366
2367         if (!wpa_s->conf->persistent_reconnect)
2368                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2369
2370         for (s = wpa_s->conf->ssid; s; s = s->next) {
2371                 if (s->disabled == 2 &&
2372                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2373                     s->ssid_len == ssid_len &&
2374                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2375                         break;
2376         }
2377
2378         if (!s) {
2379                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2380                            " requested reinvocation of an unknown group",
2381                            MAC2STR(sa));
2382                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2383         }
2384
2385         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2386                 *go = 1;
2387                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2388                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2389                                    "interface is already in use - reject "
2390                                    "invitation");
2391                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2392                 }
2393                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2394         } else if (s->mode == WPAS_MODE_P2P_GO) {
2395                 *go = 1;
2396                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2397                 {
2398                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2399                                    "interface address for the group");
2400                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2401                 }
2402                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2403                           ETH_ALEN);
2404         }
2405
2406 accept_inv:
2407         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, cur_bssid) == 0 &&
2408             wpa_s->assoc_freq) {
2409                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2410                            "the channel we are already using");
2411                 *force_freq = wpa_s->assoc_freq;
2412         }
2413
2414         res = wpa_drv_shared_freq(wpa_s);
2415         if (res > 0) {
2416                 wpa_printf(MSG_DEBUG, "P2P: Trying to force channel to match "
2417                            "with the channel we are already using on a "
2418                            "shared interface");
2419                 *force_freq = res;
2420         }
2421
2422         return P2P_SC_SUCCESS;
2423 }
2424
2425
2426 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2427                                      const u8 *ssid, size_t ssid_len,
2428                                      const u8 *go_dev_addr, u8 status,
2429                                      int op_freq)
2430 {
2431         struct wpa_supplicant *wpa_s = ctx;
2432         struct wpa_ssid *s;
2433
2434         for (s = wpa_s->conf->ssid; s; s = s->next) {
2435                 if (s->disabled == 2 &&
2436                     s->ssid_len == ssid_len &&
2437                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2438                         break;
2439         }
2440
2441         if (status == P2P_SC_SUCCESS) {
2442                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2443                            " was accepted; op_freq=%d MHz",
2444                            MAC2STR(sa), op_freq);
2445                 if (s) {
2446                         int go = s->mode == WPAS_MODE_P2P_GO;
2447                         wpas_p2p_group_add_persistent(
2448                                 wpa_s, s, go, go ? op_freq : 0, 0);
2449                 } else if (bssid) {
2450                         wpa_s->user_initiated_pd = 0;
2451                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2452                                       wpa_s->p2p_wps_method, 0);
2453                 }
2454                 return;
2455         }
2456
2457         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2458                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2459                            " was rejected (status %u)", MAC2STR(sa), status);
2460                 return;
2461         }
2462
2463         if (!s) {
2464                 if (bssid) {
2465                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2466                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2467                                 " bssid=" MACSTR " unknown-network",
2468                                 MAC2STR(sa), MAC2STR(go_dev_addr),
2469                                 MAC2STR(bssid));
2470                 } else {
2471                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2472                                 "sa=" MACSTR " go_dev_addr=" MACSTR
2473                                 " unknown-network",
2474                                 MAC2STR(sa), MAC2STR(go_dev_addr));
2475                 }
2476                 return;
2477         }
2478
2479         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED "sa=" MACSTR
2480                 " persistent=%d", MAC2STR(sa), s->id);
2481 }
2482
2483
2484 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid)
2485 {
2486         struct wpa_supplicant *wpa_s = ctx;
2487         struct wpa_ssid *ssid;
2488
2489         if (bssid) {
2490                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2491                         "status=%d " MACSTR,
2492                         status, MAC2STR(bssid));
2493         } else {
2494                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
2495                         "status=%d ", status);
2496         }
2497         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
2498
2499         if (wpa_s->pending_invite_ssid_id == -1)
2500                 return; /* Invitation to active group */
2501
2502         if (status != P2P_SC_SUCCESS) {
2503                 wpas_p2p_remove_pending_group_interface(wpa_s);
2504                 return;
2505         }
2506
2507         ssid = wpa_config_get_network(wpa_s->conf,
2508                                       wpa_s->pending_invite_ssid_id);
2509         if (ssid == NULL) {
2510                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
2511                            "data matching with invitation");
2512                 return;
2513         }
2514
2515         /*
2516          * The peer could have missed our ctrl::ack frame for Invitation
2517          * Response and continue retransmitting the frame. To reduce the
2518          * likelihood of the peer not getting successful TX status for the
2519          * Invitation Response frame, wait a short time here before starting
2520          * the persistent group so that we will remain on the current channel to
2521          * acknowledge any possible retransmission from the peer.
2522          */
2523         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
2524                 "starting persistent group");
2525         os_sleep(0, 50000);
2526
2527         wpas_p2p_group_add_persistent(wpa_s, ssid,
2528                                       ssid->mode == WPAS_MODE_P2P_GO,
2529                                       wpa_s->p2p_persistent_go_freq,
2530                                       wpa_s->p2p_go_ht40);
2531 }
2532
2533
2534 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
2535                                     unsigned int freq)
2536 {
2537         unsigned int i;
2538
2539         if (global->p2p_disallow_freq == NULL)
2540                 return 0;
2541
2542         for (i = 0; i < global->num_p2p_disallow_freq; i++) {
2543                 if (freq >= global->p2p_disallow_freq[i].min &&
2544                     freq <= global->p2p_disallow_freq[i].max)
2545                         return 1;
2546         }
2547
2548         return 0;
2549 }
2550
2551
2552 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
2553 {
2554         reg->channel[reg->channels] = chan;
2555         reg->channels++;
2556 }
2557
2558
2559 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
2560                                      struct p2p_channels *chan)
2561 {
2562         int i, cla = 0;
2563
2564         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
2565                    "band");
2566
2567         /* Operating class 81 - 2.4 GHz band channels 1..13 */
2568         chan->reg_class[cla].reg_class = 81;
2569         chan->reg_class[cla].channels = 0;
2570         for (i = 0; i < 11; i++) {
2571                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
2572                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
2573         }
2574         if (chan->reg_class[cla].channels)
2575                 cla++;
2576
2577         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
2578                    "band");
2579
2580         /* Operating class 115 - 5 GHz, channels 36-48 */
2581         chan->reg_class[cla].reg_class = 115;
2582         chan->reg_class[cla].channels = 0;
2583         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
2584                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
2585         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
2586                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
2587         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
2588                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
2589         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
2590                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
2591         if (chan->reg_class[cla].channels)
2592                 cla++;
2593
2594         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
2595                    "band");
2596
2597         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
2598         chan->reg_class[cla].reg_class = 124;
2599         chan->reg_class[cla].channels = 0;
2600         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
2601                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
2602         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
2603                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
2604         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
2605                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
2606         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
2607                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
2608         if (chan->reg_class[cla].channels)
2609                 cla++;
2610
2611         chan->reg_classes = cla;
2612         return 0;
2613 }
2614
2615
2616 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
2617                                           u16 num_modes,
2618                                           enum hostapd_hw_mode mode)
2619 {
2620         u16 i;
2621
2622         for (i = 0; i < num_modes; i++) {
2623                 if (modes[i].mode == mode)
2624                         return &modes[i];
2625         }
2626
2627         return NULL;
2628 }
2629
2630
2631 static int has_channel(struct wpa_global *global,
2632                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
2633 {
2634         int i;
2635         unsigned int freq;
2636
2637         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
2638                 chan * 5;
2639         if (wpas_p2p_disallowed_freq(global, freq))
2640                 return 0;
2641
2642         for (i = 0; i < mode->num_channels; i++) {
2643                 if (mode->channels[i].chan == chan) {
2644                         if (flags)
2645                                 *flags = mode->channels[i].flag;
2646                         return !(mode->channels[i].flag &
2647                                  (HOSTAPD_CHAN_DISABLED |
2648                                   HOSTAPD_CHAN_PASSIVE_SCAN |
2649                                   HOSTAPD_CHAN_NO_IBSS |
2650                                   HOSTAPD_CHAN_RADAR));
2651                 }
2652         }
2653
2654         return 0;
2655 }
2656
2657
2658 struct p2p_oper_class_map {
2659         enum hostapd_hw_mode mode;
2660         u8 op_class;
2661         u8 min_chan;
2662         u8 max_chan;
2663         u8 inc;
2664         enum { BW20, BW40PLUS, BW40MINUS } bw;
2665 };
2666
2667 static struct p2p_oper_class_map op_class[] = {
2668         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
2669 #if 0 /* Do not enable HT40 on 2 GHz for now */
2670         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
2671         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
2672 #endif
2673         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
2674         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
2675         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
2676         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
2677         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
2678         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
2679         { -1, 0, 0, 0, 0, BW20 }
2680 };
2681
2682
2683 static int wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
2684                                    struct hostapd_hw_modes *mode,
2685                                    u8 channel, u8 bw)
2686 {
2687         int flag;
2688
2689         if (!has_channel(wpa_s->global, mode, channel, &flag))
2690                 return -1;
2691         if (bw == BW40MINUS &&
2692             (!(flag & HOSTAPD_CHAN_HT40MINUS) ||
2693              !has_channel(wpa_s->global, mode, channel - 4, NULL)))
2694                 return 0;
2695         if (bw == BW40PLUS &&
2696             (!(flag & HOSTAPD_CHAN_HT40PLUS) ||
2697              !has_channel(wpa_s->global, mode, channel + 4, NULL)))
2698                 return 0;
2699         return 1;
2700 }
2701
2702
2703 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
2704                                    struct p2p_channels *chan)
2705 {
2706         struct hostapd_hw_modes *mode;
2707         int cla, op;
2708
2709         if (wpa_s->hw.modes == NULL) {
2710                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
2711                            "of all supported channels; assume dualband "
2712                            "support");
2713                 return wpas_p2p_default_channels(wpa_s, chan);
2714         }
2715
2716         cla = 0;
2717
2718         for (op = 0; op_class[op].op_class; op++) {
2719                 struct p2p_oper_class_map *o = &op_class[op];
2720                 u8 ch;
2721                 struct p2p_reg_class *reg = NULL;
2722
2723                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
2724                 if (mode == NULL)
2725                         continue;
2726                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2727                         if (wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw) < 1)
2728                                 continue;
2729                         if (reg == NULL) {
2730                                 wpa_printf(MSG_DEBUG, "P2P: Add operating "
2731                                            "class %u", o->op_class);
2732                                 reg = &chan->reg_class[cla];
2733                                 cla++;
2734                                 reg->reg_class = o->op_class;
2735                         }
2736                         reg->channel[reg->channels] = ch;
2737                         reg->channels++;
2738                 }
2739                 if (reg) {
2740                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
2741                                     reg->channel, reg->channels);
2742                 }
2743         }
2744
2745         chan->reg_classes = cla;
2746
2747         return 0;
2748 }
2749
2750
2751 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
2752                            struct hostapd_hw_modes *mode, u8 channel)
2753 {
2754         int op, ret;
2755
2756         for (op = 0; op_class[op].op_class; op++) {
2757                 struct p2p_oper_class_map *o = &op_class[op];
2758                 u8 ch;
2759
2760                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
2761                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
2762                             o->bw == BW20 || ch != channel)
2763                                 continue;
2764                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
2765                         if (ret < 0)
2766                                 continue;
2767                         else if (ret > 0)
2768                                 return (o->bw == BW40MINUS) ? -1 : 1;
2769                         else
2770                                 return 0;
2771                 }
2772         }
2773         return 0;
2774 }
2775
2776
2777 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
2778                         size_t buf_len)
2779 {
2780         struct wpa_supplicant *wpa_s = ctx;
2781
2782         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2783                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
2784                         break;
2785         }
2786         if (wpa_s == NULL)
2787                 return -1;
2788
2789         return wpa_drv_get_noa(wpa_s, buf, buf_len);
2790 }
2791
2792
2793 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
2794 {
2795         struct wpa_supplicant *wpa_s = ctx;
2796
2797         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2798                 struct wpa_ssid *ssid = wpa_s->current_ssid;
2799                 if (ssid == NULL)
2800                         continue;
2801                 if (ssid->mode != WPAS_MODE_INFRA)
2802                         continue;
2803                 if (wpa_s->wpa_state != WPA_COMPLETED &&
2804                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
2805                         continue;
2806                 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
2807                         return 1;
2808         }
2809
2810         return 0;
2811 }
2812
2813
2814 /**
2815  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
2816  * @global: Pointer to global data from wpa_supplicant_init()
2817  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2818  * Returns: 0 on success, -1 on failure
2819  */
2820 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
2821 {
2822         struct p2p_config p2p;
2823         unsigned int r;
2824         int i;
2825
2826         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
2827                 return 0;
2828
2829         if (global->p2p)
2830                 return 0;
2831
2832         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
2833                 struct p2p_params params;
2834
2835                 wpa_printf(MSG_DEBUG, "P2P: Use driver-based P2P management");
2836                 os_memset(&params, 0, sizeof(params));
2837                 params.dev_name = wpa_s->conf->device_name;
2838                 os_memcpy(params.pri_dev_type, wpa_s->conf->device_type,
2839                           WPS_DEV_TYPE_LEN);
2840                 params.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2841                 os_memcpy(params.sec_dev_type,
2842                           wpa_s->conf->sec_device_type,
2843                           params.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2844
2845                 if (wpa_drv_p2p_set_params(wpa_s, &params) < 0)
2846                         return -1;
2847
2848                 return 0;
2849         }
2850
2851         os_memset(&p2p, 0, sizeof(p2p));
2852         p2p.msg_ctx = wpa_s;
2853         p2p.cb_ctx = wpa_s;
2854         p2p.p2p_scan = wpas_p2p_scan;
2855         p2p.send_action = wpas_send_action;
2856         p2p.send_action_done = wpas_send_action_done;
2857         p2p.go_neg_completed = wpas_go_neg_completed;
2858         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
2859         p2p.dev_found = wpas_dev_found;
2860         p2p.dev_lost = wpas_dev_lost;
2861         p2p.start_listen = wpas_start_listen;
2862         p2p.stop_listen = wpas_stop_listen;
2863         p2p.send_probe_resp = wpas_send_probe_resp;
2864         p2p.sd_request = wpas_sd_request;
2865         p2p.sd_response = wpas_sd_response;
2866         p2p.prov_disc_req = wpas_prov_disc_req;
2867         p2p.prov_disc_resp = wpas_prov_disc_resp;
2868         p2p.prov_disc_fail = wpas_prov_disc_fail;
2869         p2p.invitation_process = wpas_invitation_process;
2870         p2p.invitation_received = wpas_invitation_received;
2871         p2p.invitation_result = wpas_invitation_result;
2872         p2p.get_noa = wpas_get_noa;
2873         p2p.go_connected = wpas_go_connected;
2874
2875         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
2876         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
2877         p2p.dev_name = wpa_s->conf->device_name;
2878         p2p.manufacturer = wpa_s->conf->manufacturer;
2879         p2p.model_name = wpa_s->conf->model_name;
2880         p2p.model_number = wpa_s->conf->model_number;
2881         p2p.serial_number = wpa_s->conf->serial_number;
2882         if (wpa_s->wps) {
2883                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
2884                 p2p.config_methods = wpa_s->wps->config_methods;
2885         }
2886
2887         if (wpa_s->conf->p2p_listen_reg_class &&
2888             wpa_s->conf->p2p_listen_channel) {
2889                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
2890                 p2p.channel = wpa_s->conf->p2p_listen_channel;
2891         } else {
2892                 p2p.reg_class = 81;
2893                 /*
2894                  * Pick one of the social channels randomly as the listen
2895                  * channel.
2896                  */
2897                 os_get_random((u8 *) &r, sizeof(r));
2898                 p2p.channel = 1 + (r % 3) * 5;
2899         }
2900         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
2901
2902         if (wpa_s->conf->p2p_oper_reg_class &&
2903             wpa_s->conf->p2p_oper_channel) {
2904                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
2905                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
2906                 p2p.cfg_op_channel = 1;
2907                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
2908                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2909
2910         } else {
2911                 p2p.op_reg_class = 81;
2912                 /*
2913                  * Use random operation channel from (1, 6, 11) if no other
2914                  * preference is indicated.
2915                  */
2916                 os_get_random((u8 *) &r, sizeof(r));
2917                 p2p.op_channel = 1 + (r % 3) * 5;
2918                 p2p.cfg_op_channel = 0;
2919                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
2920                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
2921         }
2922         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
2923                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
2924                 p2p.country[2] = 0x04;
2925         } else
2926                 os_memcpy(p2p.country, "XX\x04", 3);
2927
2928         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels)) {
2929                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
2930                            "channel list");
2931                 return -1;
2932         }
2933
2934         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
2935                   WPS_DEV_TYPE_LEN);
2936
2937         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
2938         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
2939                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
2940
2941         p2p.concurrent_operations = !!(wpa_s->drv_flags &
2942                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
2943
2944         p2p.max_peers = 100;
2945
2946         if (wpa_s->conf->p2p_ssid_postfix) {
2947                 p2p.ssid_postfix_len =
2948                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
2949                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
2950                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
2951                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
2952                           p2p.ssid_postfix_len);
2953         }
2954
2955         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
2956
2957         p2p.max_listen = wpa_s->max_remain_on_chan;
2958
2959         global->p2p = p2p_init(&p2p);
2960         if (global->p2p == NULL)
2961                 return -1;
2962         global->p2p_init_wpa_s = wpa_s;
2963
2964         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
2965                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
2966                         continue;
2967                 p2p_add_wps_vendor_extension(
2968                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
2969         }
2970
2971         return 0;
2972 }
2973
2974
2975 /**
2976  * wpas_p2p_deinit - Deinitialize per-interface P2P data
2977  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
2978  *
2979  * This function deinitialize per-interface P2P data.
2980  */
2981 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
2982 {
2983         if (wpa_s->driver && wpa_s->drv_priv)
2984                 wpa_drv_probe_req_report(wpa_s, 0);
2985
2986         if (wpa_s->go_params) {
2987                 /* Clear any stored provisioning info */
2988                 p2p_clear_provisioning_info(
2989                         wpa_s->global->p2p,
2990                         wpa_s->go_params->peer_device_addr);
2991         }
2992
2993         os_free(wpa_s->go_params);
2994         wpa_s->go_params = NULL;
2995         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2996         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
2997         wpa_s->p2p_long_listen = 0;
2998         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2999         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
3000         wpas_p2p_remove_pending_group_interface(wpa_s);
3001
3002         /* TODO: remove group interface from the driver if this wpa_s instance
3003          * is on top of a P2P group interface */
3004 }
3005
3006
3007 /**
3008  * wpas_p2p_deinit_global - Deinitialize global P2P module
3009  * @global: Pointer to global data from wpa_supplicant_init()
3010  *
3011  * This function deinitializes the global (per device) P2P module.
3012  */
3013 void wpas_p2p_deinit_global(struct wpa_global *global)
3014 {
3015         struct wpa_supplicant *wpa_s, *tmp;
3016
3017         wpa_s = global->ifaces;
3018         if (wpa_s)
3019                 wpas_p2p_service_flush(wpa_s);
3020
3021         if (global->p2p == NULL)
3022                 return;
3023
3024         /* Remove remaining P2P group interfaces */
3025         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
3026                 wpa_s = wpa_s->next;
3027         while (wpa_s) {
3028                 tmp = global->ifaces;
3029                 while (tmp &&
3030                        (tmp == wpa_s ||
3031                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
3032                         tmp = tmp->next;
3033                 }
3034                 if (tmp == NULL)
3035                         break;
3036                 /* Disconnect from the P2P group and deinit the interface */
3037                 wpas_p2p_disconnect(tmp);
3038         }
3039
3040         /*
3041          * Deinit GO data on any possibly remaining interface (if main
3042          * interface is used as GO).
3043          */
3044         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3045                 if (wpa_s->ap_iface)
3046                         wpas_p2p_group_deinit(wpa_s);
3047         }
3048
3049         p2p_deinit(global->p2p);
3050         global->p2p = NULL;
3051         global->p2p_init_wpa_s = NULL;
3052 }
3053
3054
3055 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
3056 {
3057         if (wpa_s->conf->p2p_no_group_iface)
3058                 return 0; /* separate interface disabled per configuration */
3059         if (wpa_s->drv_flags &
3060             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
3061              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
3062                 return 1; /* P2P group requires a new interface in every case
3063                            */
3064         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
3065                 return 0; /* driver does not support concurrent operations */
3066         if (wpa_s->global->ifaces->next)
3067                 return 1; /* more that one interface already in use */
3068         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
3069                 return 1; /* this interface is already in use */
3070         return 0;
3071 }
3072
3073
3074 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
3075                                  const u8 *peer_addr,
3076                                  enum p2p_wps_method wps_method,
3077                                  int go_intent, const u8 *own_interface_addr,
3078                                  unsigned int force_freq, int persistent_group,
3079                                  struct wpa_ssid *ssid, unsigned int pref_freq)
3080 {
3081         if (persistent_group && wpa_s->conf->persistent_reconnect)
3082                 persistent_group = 2;
3083
3084         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
3085                 return wpa_drv_p2p_connect(wpa_s, peer_addr, wps_method,
3086                                            go_intent, own_interface_addr,
3087                                            force_freq, persistent_group);
3088         }
3089
3090         /*
3091          * Increase GO config timeout if HT40 is used since it takes some time
3092          * to scan channels for coex purposes before the BSS can be started.
3093          */
3094         p2p_set_config_timeout(wpa_s->global->p2p,
3095                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
3096
3097         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
3098                            go_intent, own_interface_addr, force_freq,
3099                            persistent_group, ssid ? ssid->ssid : NULL,
3100                            ssid ? ssid->ssid_len : 0,
3101                            wpa_s->p2p_pd_before_go_neg, pref_freq);
3102 }
3103
3104
3105 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
3106                                 const u8 *peer_addr,
3107                                 enum p2p_wps_method wps_method,
3108                                 int go_intent, const u8 *own_interface_addr,
3109                                 unsigned int force_freq, int persistent_group,
3110                                 struct wpa_ssid *ssid, unsigned int pref_freq)
3111 {
3112         if (persistent_group && wpa_s->conf->persistent_reconnect)
3113                 persistent_group = 2;
3114
3115         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3116                 return -1;
3117
3118         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
3119                              go_intent, own_interface_addr, force_freq,
3120                              persistent_group, ssid ? ssid->ssid : NULL,
3121                              ssid ? ssid->ssid_len : 0, pref_freq);
3122 }
3123
3124
3125 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
3126 {
3127         wpa_s->p2p_join_scan_count++;
3128         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
3129                    wpa_s->p2p_join_scan_count);
3130         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
3131                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
3132                            " for join operationg - stop join attempt",
3133                            MAC2STR(wpa_s->pending_join_iface_addr));
3134                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3135                 if (wpa_s->p2p_auto_pd) {
3136                         wpa_s->p2p_auto_pd = 0;
3137                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3138                                 " p2p_dev_addr=" MACSTR " status=N/A",
3139                                 MAC2STR(wpa_s->pending_join_dev_addr));
3140                         return;
3141                 }
3142                 wpa_msg(wpa_s->parent, MSG_INFO,
3143                         P2P_EVENT_GROUP_FORMATION_FAILURE);
3144         }
3145 }
3146
3147
3148 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
3149 {
3150         struct wpa_supplicant *iface;
3151         int shared_freq;
3152         u8 bssid[ETH_ALEN];
3153
3154         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)
3155                 return 0;
3156
3157         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
3158                 if (!wpas_p2p_create_iface(wpa_s) && iface == wpa_s)
3159                         continue;
3160                 if (iface->current_ssid == NULL || iface->assoc_freq == 0)
3161                         continue;
3162                 if (iface->current_ssid->mode == WPAS_MODE_AP ||
3163                     iface->current_ssid->mode == WPAS_MODE_P2P_GO)
3164                         shared_freq = iface->current_ssid->frequency;
3165                 else if (wpa_drv_get_bssid(iface, bssid) == 0)
3166                         shared_freq = iface->assoc_freq;
3167                 else
3168                         shared_freq = 0;
3169
3170                 if (shared_freq && freq != shared_freq) {
3171                         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - %s "
3172                                    "connected on %d MHz - new connection on "
3173                                    "%d MHz", iface->ifname, shared_freq, freq);
3174                         return 1;
3175                 }
3176         }
3177
3178         shared_freq = wpa_drv_shared_freq(wpa_s);
3179         if (shared_freq > 0 && shared_freq != freq) {
3180                 wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - shared "
3181                            "virtual interface connected on %d MHz - new "
3182                            "connection on %d MHz", shared_freq, freq);
3183                 return 1;
3184         }
3185
3186         return 0;
3187 }
3188
3189
3190 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
3191                             const u8 *peer_dev_addr)
3192 {
3193         struct wpa_bss *bss;
3194         int updated;
3195
3196         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
3197         if (bss == NULL)
3198                 return -1;
3199         if (bss->last_update_idx < wpa_s->bss_update_idx) {
3200                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
3201                            "last scan");
3202                 return 0;
3203         }
3204
3205         updated = os_time_before(&wpa_s->p2p_auto_started, &bss->last_update);
3206         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
3207                    "%ld.%06ld (%supdated in last scan)",
3208                    bss->last_update.sec, bss->last_update.usec,
3209                    updated ? "": "not ");
3210
3211         return updated;
3212 }
3213
3214
3215 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
3216                                    struct wpa_scan_results *scan_res)
3217 {
3218         struct wpa_bss *bss;
3219         int freq;
3220         u8 iface_addr[ETH_ALEN];
3221
3222         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3223
3224         if (wpa_s->global->p2p_disabled)
3225                 return;
3226
3227         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
3228                    scan_res ? (int) scan_res->num : -1,
3229                    wpa_s->p2p_auto_join ? "auto_" : "");
3230
3231         if (scan_res)
3232                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
3233
3234         if (wpa_s->p2p_auto_pd) {
3235                 int join = wpas_p2p_peer_go(wpa_s,
3236                                             wpa_s->pending_join_dev_addr);
3237                 if (join == 0 &&
3238                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
3239                         wpa_s->auto_pd_scan_retry++;
3240                         bss = wpa_bss_get_bssid(wpa_s,
3241                                                 wpa_s->pending_join_dev_addr);
3242                         if (bss) {
3243                                 freq = bss->freq;
3244                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
3245                                            "the peer " MACSTR " at %d MHz",
3246                                            wpa_s->auto_pd_scan_retry,
3247                                            MAC2STR(wpa_s->
3248                                                    pending_join_dev_addr),
3249                                            freq);
3250                                 wpas_p2p_join_scan_req(wpa_s, freq);
3251                                 return;
3252                         }
3253                 }
3254
3255                 if (join < 0)
3256                         join = 0;
3257
3258                 wpa_s->p2p_auto_pd = 0;
3259                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
3260                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
3261                            MAC2STR(wpa_s->pending_join_dev_addr), join);
3262                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3263                                       wpa_s->pending_join_dev_addr,
3264                                       wpa_s->pending_pd_config_methods, join,
3265                                       0, wpa_s->user_initiated_pd) < 0) {
3266                         wpa_s->p2p_auto_pd = 0;
3267                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
3268                                 " p2p_dev_addr=" MACSTR " status=N/A",
3269                                 MAC2STR(wpa_s->pending_join_dev_addr));
3270                 }
3271                 return;
3272         }
3273
3274         if (wpa_s->p2p_auto_join) {
3275                 int join = wpas_p2p_peer_go(wpa_s,
3276                                             wpa_s->pending_join_dev_addr);
3277                 if (join < 0) {
3278                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
3279                                    "running a GO -> use GO Negotiation");
3280                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
3281                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
3282                                          wpa_s->p2p_persistent_group, 0, 0, 0,
3283                                          wpa_s->p2p_go_intent,
3284                                          wpa_s->p2p_connect_freq,
3285                                          wpa_s->p2p_persistent_id,
3286                                          wpa_s->p2p_pd_before_go_neg,
3287                                          wpa_s->p2p_go_ht40);
3288                         return;
3289                 }
3290
3291                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
3292                            "try to join the group", join ? "" :
3293                            " in older scan");
3294                 if (!join)
3295                         wpa_s->p2p_fallback_to_go_neg = 1;
3296         }
3297
3298         freq = p2p_get_oper_freq(wpa_s->global->p2p,
3299                                  wpa_s->pending_join_iface_addr);
3300         if (freq < 0 &&
3301             p2p_get_interface_addr(wpa_s->global->p2p,
3302                                    wpa_s->pending_join_dev_addr,
3303                                    iface_addr) == 0 &&
3304             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
3305         {
3306                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
3307                            "address for join from " MACSTR " to " MACSTR
3308                            " based on newly discovered P2P peer entry",
3309                            MAC2STR(wpa_s->pending_join_iface_addr),
3310                            MAC2STR(iface_addr));
3311                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
3312                           ETH_ALEN);
3313
3314                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
3315                                          wpa_s->pending_join_iface_addr);
3316         }
3317         if (freq >= 0) {
3318                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3319                            "from P2P peer table: %d MHz", freq);
3320         }
3321         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3322         if (bss) {
3323                 freq = bss->freq;
3324                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
3325                            "from BSS table: %d MHz", freq);
3326         }
3327         if (freq > 0) {
3328                 u16 method;
3329
3330                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
3331                         wpa_msg(wpa_s->parent, MSG_INFO,
3332                                 P2P_EVENT_GROUP_FORMATION_FAILURE
3333                                 "reason=FREQ_CONFLICT");
3334                         return;
3335                 }
3336
3337                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
3338                            "prior to joining an existing group (GO " MACSTR
3339                            " freq=%u MHz)",
3340                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
3341                 wpa_s->pending_pd_before_join = 1;
3342
3343                 switch (wpa_s->pending_join_wps_method) {
3344                 case WPS_PIN_DISPLAY:
3345                         method = WPS_CONFIG_KEYPAD;
3346                         break;
3347                 case WPS_PIN_KEYPAD:
3348                         method = WPS_CONFIG_DISPLAY;
3349                         break;
3350                 case WPS_PBC:
3351                         method = WPS_CONFIG_PUSHBUTTON;
3352                         break;
3353                 default:
3354                         method = 0;
3355                         break;
3356                 }
3357
3358                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
3359                                                wpa_s->pending_join_dev_addr) ==
3360                      method)) {
3361                         /*
3362                          * We have already performed provision discovery for
3363                          * joining the group. Proceed directly to join
3364                          * operation without duplicated provision discovery. */
3365                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
3366                                    "with " MACSTR " already done - proceed to "
3367                                    "join",
3368                                    MAC2STR(wpa_s->pending_join_dev_addr));
3369                         wpa_s->pending_pd_before_join = 0;
3370                         goto start;
3371                 }
3372
3373                 if (p2p_prov_disc_req(wpa_s->global->p2p,
3374                                       wpa_s->pending_join_dev_addr, method, 1,
3375                                       freq, wpa_s->user_initiated_pd) < 0) {
3376                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
3377                                    "Discovery Request before joining an "
3378                                    "existing group");
3379                         wpa_s->pending_pd_before_join = 0;
3380                         goto start;
3381                 }
3382                 return;
3383         }
3384
3385         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
3386         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3387         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3388         wpas_p2p_check_join_scan_limit(wpa_s);
3389         return;
3390
3391 start:
3392         /* Start join operation immediately */
3393         wpas_p2p_join_start(wpa_s);
3394 }
3395
3396
3397 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq)
3398 {
3399         int ret;
3400         struct wpa_driver_scan_params params;
3401         struct wpabuf *wps_ie, *ies;
3402         size_t ielen;
3403         int freqs[2] = { 0, 0 };
3404
3405         os_memset(&params, 0, sizeof(params));
3406
3407         /* P2P Wildcard SSID */
3408         params.num_ssids = 1;
3409         params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
3410         params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
3411
3412         wpa_s->wps->dev.p2p = 1;
3413         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
3414                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
3415                                         NULL);
3416         if (wps_ie == NULL) {
3417                 wpas_p2p_scan_res_join(wpa_s, NULL);
3418                 return;
3419         }
3420
3421         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
3422         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
3423         if (ies == NULL) {
3424                 wpabuf_free(wps_ie);
3425                 wpas_p2p_scan_res_join(wpa_s, NULL);
3426                 return;
3427         }
3428         wpabuf_put_buf(ies, wps_ie);
3429         wpabuf_free(wps_ie);
3430
3431         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
3432
3433         params.p2p_probe = 1;
3434         params.extra_ies = wpabuf_head(ies);
3435         params.extra_ies_len = wpabuf_len(ies);
3436         if (freq > 0) {
3437                 freqs[0] = freq;
3438                 params.freqs = freqs;
3439         }
3440
3441         /*
3442          * Run a scan to update BSS table and start Provision Discovery once
3443          * the new scan results become available.
3444          */
3445         ret = wpa_drv_scan(wpa_s, &params);
3446         if (!ret)
3447                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
3448
3449         wpabuf_free(ies);
3450
3451         if (ret) {
3452                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
3453                            "try again later");
3454                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3455                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
3456                 wpas_p2p_check_join_scan_limit(wpa_s);
3457         }
3458 }
3459
3460
3461 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
3462 {
3463         struct wpa_supplicant *wpa_s = eloop_ctx;
3464         wpas_p2p_join_scan_req(wpa_s, 0);
3465 }
3466
3467
3468 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
3469                          const u8 *dev_addr, enum p2p_wps_method wps_method,
3470                          int auto_join)
3471 {
3472         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
3473                    MACSTR " dev " MACSTR ")%s",
3474                    MAC2STR(iface_addr), MAC2STR(dev_addr),
3475                    auto_join ? " (auto_join)" : "");
3476
3477         wpa_s->p2p_auto_pd = 0;
3478         wpa_s->p2p_auto_join = !!auto_join;
3479         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
3480         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
3481         wpa_s->pending_join_wps_method = wps_method;
3482
3483         /* Make sure we are not running find during connection establishment */
3484         wpas_p2p_stop_find(wpa_s);
3485
3486         wpa_s->p2p_join_scan_count = 0;
3487         wpas_p2p_join_scan(wpa_s, NULL);
3488         return 0;
3489 }
3490
3491
3492 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s)
3493 {
3494         struct wpa_supplicant *group;
3495         struct p2p_go_neg_results res;
3496         struct wpa_bss *bss;
3497
3498         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
3499         if (group == NULL)
3500                 return -1;
3501         if (group != wpa_s) {
3502                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
3503                           sizeof(group->p2p_pin));
3504                 group->p2p_wps_method = wpa_s->p2p_wps_method;
3505         } else {
3506                 /*
3507                  * Need to mark the current interface for p2p_group_formation
3508                  * when a separate group interface is not used. This is needed
3509                  * to allow p2p_cancel stop a pending p2p_connect-join.
3510                  * wpas_p2p_init_group_interface() addresses this for the case
3511                  * where a separate group interface is used.
3512                  */
3513                 wpa_s->global->p2p_group_formation = wpa_s;
3514         }
3515
3516         group->p2p_in_provisioning = 1;
3517         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
3518
3519         os_memset(&res, 0, sizeof(res));
3520         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
3521                   ETH_ALEN);
3522         res.wps_method = wpa_s->pending_join_wps_method;
3523         bss = wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr);
3524         if (bss) {
3525                 res.freq = bss->freq;
3526                 res.ssid_len = bss->ssid_len;
3527                 os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
3528         }
3529
3530         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
3531                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
3532                            "starting client");
3533                 wpa_drv_cancel_remain_on_channel(wpa_s);
3534                 wpa_s->off_channel_freq = 0;
3535                 wpa_s->roc_waiting_drv_freq = 0;
3536         }
3537         wpas_start_wps_enrollee(group, &res);
3538
3539         /*
3540          * Allow a longer timeout for join-a-running-group than normal 15
3541          * second group formation timeout since the GO may not have authorized
3542          * our connection yet.
3543          */
3544         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3545         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
3546                                wpa_s, NULL);
3547
3548         return 0;
3549 }
3550
3551
3552 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
3553                                 int *force_freq, int *pref_freq,
3554                                 int *oper_freq)
3555 {
3556         if (freq > 0) {
3557                 if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
3558                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
3559                                    "(%u MHz) is not supported for P2P uses",
3560                                    freq);
3561                         return -3;
3562                 }
3563
3564                 if (*oper_freq > 0 && freq != *oper_freq &&
3565                     !(wpa_s->drv_flags &
3566                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3567                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3568                                    "on %u MHz while connected on another "
3569                                    "channel (%u MHz)", freq, *oper_freq);
3570                         return -2;
3571                 }
3572                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3573                            "requested channel (%u MHz)", freq);
3574                 *force_freq = freq;
3575         } else if (*oper_freq > 0 &&
3576                    !p2p_supported_freq(wpa_s->global->p2p, *oper_freq)) {
3577                 if (!(wpa_s->drv_flags &
3578                       WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3579                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group "
3580                                    "while connected on non-P2P supported "
3581                                    "channel (%u MHz)", *oper_freq);
3582                         return -2;
3583                 }
3584                 wpa_printf(MSG_DEBUG, "P2P: Current operating channel "
3585                            "(%u MHz) not available for P2P - try to use "
3586                            "another channel", *oper_freq);
3587                 *force_freq = 0;
3588         } else if (*oper_freq > 0 && *pref_freq == 0 &&
3589                    (wpa_s->drv_flags &
3590                     WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3591                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer the channel we "
3592                            "are already using (%u MHz) on another interface",
3593                            *oper_freq);
3594                 *pref_freq = *oper_freq;
3595         } else if (*oper_freq > 0) {
3596                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
3597                            "channel we are already using (%u MHz) on another "
3598                            "interface", *oper_freq);
3599                 *force_freq = *oper_freq;
3600         }
3601
3602         return 0;
3603 }
3604
3605
3606 /**
3607  * wpas_p2p_connect - Request P2P Group Formation to be started
3608  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3609  * @peer_addr: Address of the peer P2P Device
3610  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
3611  * @persistent_group: Whether to create a persistent group
3612  * @auto_join: Whether to select join vs. GO Negotiation automatically
3613  * @join: Whether to join an existing group (as a client) instead of starting
3614  *      Group Owner negotiation; @peer_addr is BSSID in that case
3615  * @auth: Whether to only authorize the connection instead of doing that and
3616  *      initiating Group Owner negotiation
3617  * @go_intent: GO Intent or -1 to use default
3618  * @freq: Frequency for the group or 0 for auto-selection
3619  * @persistent_id: Persistent group credentials to use for forcing GO
3620  *      parameters or -1 to generate new values (SSID/passphrase)
3621  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
3622  *      interoperability workaround when initiating group formation
3623  * @ht40: Start GO with 40 MHz channel width
3624  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
3625  *      failure, -2 on failure due to channel not currently available,
3626  *      -3 if forced channel is not supported
3627  */
3628 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
3629                      const char *pin, enum p2p_wps_method wps_method,
3630                      int persistent_group, int auto_join, int join, int auth,
3631                      int go_intent, int freq, int persistent_id, int pd,
3632                      int ht40)
3633 {
3634         int force_freq = 0, pref_freq = 0, oper_freq = 0;
3635         u8 bssid[ETH_ALEN];
3636         int ret = 0, res;
3637         enum wpa_driver_if_type iftype;
3638         const u8 *if_addr;
3639         struct wpa_ssid *ssid = NULL;
3640
3641         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3642                 return -1;
3643
3644         if (persistent_id >= 0) {
3645                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
3646                 if (ssid == NULL || ssid->disabled != 2 ||
3647                     ssid->mode != WPAS_MODE_P2P_GO)
3648                         return -1;
3649         }
3650
3651         if (go_intent < 0)
3652                 go_intent = wpa_s->conf->p2p_go_intent;
3653
3654         if (!auth)
3655                 wpa_s->p2p_long_listen = 0;
3656
3657         wpa_s->p2p_wps_method = wps_method;
3658         wpa_s->p2p_persistent_group = !!persistent_group;
3659         wpa_s->p2p_persistent_id = persistent_id;
3660         wpa_s->p2p_go_intent = go_intent;
3661         wpa_s->p2p_connect_freq = freq;
3662         wpa_s->p2p_fallback_to_go_neg = 0;
3663         wpa_s->p2p_pd_before_go_neg = !!pd;
3664         wpa_s->p2p_go_ht40 = !!ht40;
3665
3666         if (pin)
3667                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
3668         else if (wps_method == WPS_PIN_DISPLAY) {
3669                 ret = wps_generate_pin();
3670                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
3671                             ret);
3672                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
3673                            wpa_s->p2p_pin);
3674         } else
3675                 wpa_s->p2p_pin[0] = '\0';
3676
3677         if (join || auto_join) {
3678                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
3679                 if (auth) {
3680                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
3681                                    "connect a running group from " MACSTR,
3682                                    MAC2STR(peer_addr));
3683                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
3684                         return ret;
3685                 }
3686                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
3687                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
3688                                            iface_addr) < 0) {
3689                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
3690                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
3691                                          dev_addr);
3692                 }
3693                 if (auto_join) {
3694                         os_get_time(&wpa_s->p2p_auto_started);
3695                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
3696                                    "%ld.%06ld",
3697                                    wpa_s->p2p_auto_started.sec,
3698                                    wpa_s->p2p_auto_started.usec);
3699                 }
3700                 wpa_s->user_initiated_pd = 1;
3701                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
3702                                   auto_join) < 0)
3703                         return -1;
3704                 return ret;
3705         }
3706
3707         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3708             wpa_s->assoc_freq) {
3709                 oper_freq = wpa_s->assoc_freq;
3710         } else {
3711                 oper_freq = wpa_drv_shared_freq(wpa_s);
3712                 if (oper_freq < 0)
3713                         oper_freq = 0;
3714         }
3715
3716         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
3717                                    &oper_freq);
3718         if (res)
3719                 return res;
3720
3721         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
3722
3723         if (wpa_s->create_p2p_iface) {
3724                 /* Prepare to add a new interface for the group */
3725                 iftype = WPA_IF_P2P_GROUP;
3726                 if (go_intent == 15)
3727                         iftype = WPA_IF_P2P_GO;
3728                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
3729                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3730                                    "interface for the group");
3731                         return -1;
3732                 }
3733
3734                 if_addr = wpa_s->pending_interface_addr;
3735         } else
3736                 if_addr = wpa_s->own_addr;
3737
3738         if (auth) {
3739                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
3740                                          go_intent, if_addr,
3741                                          force_freq, persistent_group, ssid,
3742                                          pref_freq) < 0)
3743                         return -1;
3744                 return ret;
3745         }
3746
3747         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
3748                                   go_intent, if_addr, force_freq,
3749                                   persistent_group, ssid, pref_freq) < 0) {
3750                 if (wpa_s->create_p2p_iface)
3751                         wpas_p2p_remove_pending_group_interface(wpa_s);
3752                 return -1;
3753         }
3754         return ret;
3755 }
3756
3757
3758 /**
3759  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
3760  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3761  * @freq: Frequency of the channel in MHz
3762  * @duration: Duration of the stay on the channel in milliseconds
3763  *
3764  * This callback is called when the driver indicates that it has started the
3765  * requested remain-on-channel duration.
3766  */
3767 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3768                                    unsigned int freq, unsigned int duration)
3769 {
3770         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3771                 return;
3772         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
3773                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
3774                               wpa_s->pending_listen_duration);
3775                 wpa_s->pending_listen_freq = 0;
3776         }
3777 }
3778
3779
3780 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
3781                                  unsigned int timeout)
3782 {
3783         /* Limit maximum Listen state time based on driver limitation. */
3784         if (timeout > wpa_s->max_remain_on_chan)
3785                 timeout = wpa_s->max_remain_on_chan;
3786
3787         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
3788                 return wpa_drv_p2p_listen(wpa_s, timeout);
3789
3790         return p2p_listen(wpa_s->global->p2p, timeout);
3791 }
3792
3793
3794 /**
3795  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
3796  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3797  * @freq: Frequency of the channel in MHz
3798  *
3799  * This callback is called when the driver indicates that a remain-on-channel
3800  * operation has been completed, i.e., the duration on the requested channel
3801  * has timed out.
3802  */
3803 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
3804                                           unsigned int freq)
3805 {
3806         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
3807                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
3808                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
3809         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
3810                 return;
3811         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
3812                 return; /* P2P module started a new operation */
3813         if (offchannel_pending_action_tx(wpa_s))
3814                 return;
3815         if (wpa_s->p2p_long_listen > 0)
3816                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
3817         if (wpa_s->p2p_long_listen > 0) {
3818                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
3819                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
3820         }
3821 }
3822
3823
3824 /**
3825  * wpas_p2p_group_remove - Remove a P2P group
3826  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3827  * @ifname: Network interface name of the group interface or "*" to remove all
3828  *      groups
3829  * Returns: 0 on success, -1 on failure
3830  *
3831  * This function is used to remove a P2P group. This can be used to disconnect
3832  * from a group in which the local end is a P2P Client or to end a P2P Group in
3833  * case the local end is the Group Owner. If a virtual network interface was
3834  * created for this group, that interface will be removed. Otherwise, only the
3835  * configured P2P group network will be removed from the interface.
3836  */
3837 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
3838 {
3839         struct wpa_global *global = wpa_s->global;
3840
3841         if (os_strcmp(ifname, "*") == 0) {
3842                 struct wpa_supplicant *prev;
3843                 wpa_s = global->ifaces;
3844                 while (wpa_s) {
3845                         prev = wpa_s;
3846                         wpa_s = wpa_s->next;
3847                         wpas_p2p_disconnect(prev);
3848                 }
3849                 return 0;
3850         }
3851
3852         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3853                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
3854                         break;
3855         }
3856
3857         return wpas_p2p_disconnect(wpa_s);
3858 }
3859
3860
3861 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
3862                                    struct p2p_go_neg_results *params,
3863                                    int freq, int ht40)
3864 {
3865         u8 bssid[ETH_ALEN];
3866         int res;
3867
3868         os_memset(params, 0, sizeof(*params));
3869         params->role_go = 1;
3870         params->ht40 = ht40;
3871         if (freq) {
3872                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
3873                            "frequency %d MHz", freq);
3874                 params->freq = freq;
3875         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
3876                    wpa_s->conf->p2p_oper_channel >= 1 &&
3877                    wpa_s->conf->p2p_oper_channel <= 11) {
3878                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
3879                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3880                            "frequency %d MHz", params->freq);
3881         } else if (wpa_s->conf->p2p_oper_reg_class == 115 ||
3882                    wpa_s->conf->p2p_oper_reg_class == 116 ||
3883                    wpa_s->conf->p2p_oper_reg_class == 117 ||
3884                    wpa_s->conf->p2p_oper_reg_class == 124 ||
3885                    wpa_s->conf->p2p_oper_reg_class == 126 ||
3886                    wpa_s->conf->p2p_oper_reg_class == 127) {
3887                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
3888                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
3889                            "frequency %d MHz", params->freq);
3890         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3891                    wpa_s->best_overall_freq > 0 &&
3892                    p2p_supported_freq(wpa_s->global->p2p,
3893                                       wpa_s->best_overall_freq)) {
3894                 params->freq = wpa_s->best_overall_freq;
3895                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
3896                            "channel %d MHz", params->freq);
3897         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3898                    wpa_s->best_24_freq > 0 &&
3899                    p2p_supported_freq(wpa_s->global->p2p,
3900                                       wpa_s->best_24_freq)) {
3901                 params->freq = wpa_s->best_24_freq;
3902                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
3903                            "channel %d MHz", params->freq);
3904         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
3905                    wpa_s->best_5_freq > 0 &&
3906                    p2p_supported_freq(wpa_s->global->p2p,
3907                                       wpa_s->best_5_freq)) {
3908                 params->freq = wpa_s->best_5_freq;
3909                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
3910                            "channel %d MHz", params->freq);
3911         } else {
3912                 int chan;
3913                 for (chan = 0; chan < 11; chan++) {
3914                         params->freq = 2412 + chan * 5;
3915                         if (!wpas_p2p_disallowed_freq(wpa_s->global,
3916                                                       params->freq))
3917                                 break;
3918                 }
3919                 if (chan == 11) {
3920                         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
3921                                    "allowed");
3922                         return -1;
3923                 }
3924                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
3925                            "known)", params->freq);
3926         }
3927
3928         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
3929             wpa_s->assoc_freq && !freq) {
3930                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3931                            "already using");
3932                 params->freq = wpa_s->assoc_freq;
3933         }
3934
3935         res = wpa_drv_shared_freq(wpa_s);
3936         if (res > 0 && !freq) {
3937                 wpa_printf(MSG_DEBUG, "P2P: Force GO on the channel we are "
3938                            "already using on a shared interface");
3939                 params->freq = res;
3940         } else if (res > 0 && freq != res &&
3941                    !(wpa_s->drv_flags &
3942                      WPA_DRIVER_FLAGS_MULTI_CHANNEL_CONCURRENT)) {
3943                 wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz "
3944                            "while connected on another channel (%u MHz)",
3945                            freq, res);
3946                 return -1;
3947         }
3948
3949         return 0;
3950 }
3951
3952
3953 static struct wpa_supplicant *
3954 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
3955                          int go)
3956 {
3957         struct wpa_supplicant *group_wpa_s;
3958
3959         if (!wpas_p2p_create_iface(wpa_s)) {
3960                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
3961                         "operations");
3962                 return wpa_s;
3963         }
3964
3965         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
3966                                          WPA_IF_P2P_CLIENT) < 0) {
3967                 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to add group interface");
3968                 return NULL;
3969         }
3970         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
3971         if (group_wpa_s == NULL) {
3972                 wpa_msg(wpa_s, MSG_ERROR, "P2P: Failed to initialize group "
3973                         "interface");
3974                 wpas_p2p_remove_pending_group_interface(wpa_s);
3975                 return NULL;
3976         }
3977
3978         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
3979                 group_wpa_s->ifname);
3980         return group_wpa_s;
3981 }
3982
3983
3984 /**
3985  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
3986  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3987  * @persistent_group: Whether to create a persistent group
3988  * @freq: Frequency for the group or 0 to indicate no hardcoding
3989  * Returns: 0 on success, -1 on failure
3990  *
3991  * This function creates a new P2P group with the local end as the Group Owner,
3992  * i.e., without using Group Owner Negotiation.
3993  */
3994 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
3995                        int freq, int ht40)
3996 {
3997         struct p2p_go_neg_results params;
3998         unsigned int r;
3999
4000         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4001                 return -1;
4002
4003         /* Make sure we are not running find during connection establishment */
4004         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
4005         wpas_p2p_stop_find_oper(wpa_s);
4006
4007         if (freq == 2) {
4008                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
4009                            "band");
4010                 if (wpa_s->best_24_freq > 0 &&
4011                     p2p_supported_freq(wpa_s->global->p2p,
4012                                        wpa_s->best_24_freq)) {
4013                         freq = wpa_s->best_24_freq;
4014                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
4015                                    "channel: %d MHz", freq);
4016                 } else {
4017                         os_get_random((u8 *) &r, sizeof(r));
4018                         freq = 2412 + (r % 3) * 25;
4019                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
4020                                    "channel: %d MHz", freq);
4021                 }
4022         }
4023
4024         if (freq == 5) {
4025                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
4026                            "band");
4027                 if (wpa_s->best_5_freq > 0 &&
4028                     p2p_supported_freq(wpa_s->global->p2p,
4029                                        wpa_s->best_5_freq)) {
4030                         freq = wpa_s->best_5_freq;
4031                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
4032                                    "channel: %d MHz", freq);
4033                 } else {
4034                         os_get_random((u8 *) &r, sizeof(r));
4035                         freq = 5180 + (r % 4) * 20;
4036                         if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
4037                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
4038                                            "5 GHz channel for P2P group");
4039                                 return -1;
4040                         }
4041                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
4042                                    "channel: %d MHz", freq);
4043                 }
4044         }
4045
4046         if (freq > 0 && !p2p_supported_freq(wpa_s->global->p2p, freq)) {
4047                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
4048                            "(%u MHz) is not supported for P2P uses",
4049                            freq);
4050                 return -1;
4051         }
4052
4053         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
4054                 return -1;
4055         if (params.freq &&
4056             !p2p_supported_freq(wpa_s->global->p2p, params.freq)) {
4057                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
4058                            "(%u MHz) is not supported for P2P uses",
4059                            params.freq);
4060                 return -1;
4061         }
4062         p2p_go_params(wpa_s->global->p2p, &params);
4063         params.persistent_group = persistent_group;
4064
4065         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
4066         if (wpa_s == NULL)
4067                 return -1;
4068         wpas_start_wps_go(wpa_s, &params, 0);
4069
4070         return 0;
4071 }
4072
4073
4074 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
4075                                  struct wpa_ssid *params, int addr_allocated)
4076 {
4077         struct wpa_ssid *ssid;
4078
4079         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
4080         if (wpa_s == NULL)
4081                 return -1;
4082
4083         wpa_supplicant_ap_deinit(wpa_s);
4084
4085         ssid = wpa_config_add_network(wpa_s->conf);
4086         if (ssid == NULL)
4087                 return -1;
4088         wpa_config_set_network_defaults(ssid);
4089         ssid->temporary = 1;
4090         ssid->proto = WPA_PROTO_RSN;
4091         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
4092         ssid->group_cipher = WPA_CIPHER_CCMP;
4093         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
4094         ssid->ssid = os_malloc(params->ssid_len);
4095         if (ssid->ssid == NULL) {
4096                 wpa_config_remove_network(wpa_s->conf, ssid->id);
4097                 return -1;
4098         }
4099         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
4100         ssid->ssid_len = params->ssid_len;
4101         ssid->p2p_group = 1;
4102         ssid->export_keys = 1;
4103         if (params->psk_set) {
4104                 os_memcpy(ssid->psk, params->psk, 32);
4105                 ssid->psk_set = 1;
4106         }
4107         if (params->passphrase)
4108                 ssid->passphrase = os_strdup(params->passphrase);
4109
4110         wpa_supplicant_select_network(wpa_s, ssid);
4111
4112         wpa_s->show_group_started = 1;
4113
4114         return 0;
4115 }
4116
4117
4118 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
4119                                   struct wpa_ssid *ssid, int addr_allocated,
4120                                   int freq, int ht40)
4121 {
4122         struct p2p_go_neg_results params;
4123         int go = 0;
4124
4125         if (ssid->disabled != 2 || ssid->ssid == NULL)
4126                 return -1;
4127
4128         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
4129             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
4130                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
4131                            "already running");
4132                 return 0;
4133         }
4134
4135         /* Make sure we are not running find during connection establishment */
4136         wpas_p2p_stop_find_oper(wpa_s);
4137
4138         wpa_s->p2p_fallback_to_go_neg = 0;
4139
4140         if (ssid->mode == WPAS_MODE_INFRA)
4141                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated);
4142
4143         if (ssid->mode != WPAS_MODE_P2P_GO)
4144                 return -1;
4145
4146         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40))
4147                 return -1;
4148
4149         params.role_go = 1;
4150         params.psk_set = ssid->psk_set;
4151         if (params.psk_set)
4152                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
4153         if (ssid->passphrase) {
4154                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
4155                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
4156                                    "persistent group");
4157                         return -1;
4158                 }
4159                 os_strlcpy(params.passphrase, ssid->passphrase,
4160                            sizeof(params.passphrase));
4161         }
4162         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
4163         params.ssid_len = ssid->ssid_len;
4164         params.persistent_group = 1;
4165
4166         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
4167         if (wpa_s == NULL)
4168                 return -1;
4169
4170         wpas_start_wps_go(wpa_s, &params, 0);
4171
4172         return 0;
4173 }
4174
4175
4176 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
4177                                struct wpabuf *proberesp_ies)
4178 {
4179         struct wpa_supplicant *wpa_s = ctx;
4180         if (wpa_s->ap_iface) {
4181                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
4182                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
4183                         wpabuf_free(beacon_ies);
4184                         wpabuf_free(proberesp_ies);
4185                         return;
4186                 }
4187                 if (beacon_ies) {
4188                         wpabuf_free(hapd->p2p_beacon_ie);
4189                         hapd->p2p_beacon_ie = beacon_ies;
4190                 }
4191                 wpabuf_free(hapd->p2p_probe_resp_ie);
4192                 hapd->p2p_probe_resp_ie = proberesp_ies;
4193         } else {
4194                 wpabuf_free(beacon_ies);
4195                 wpabuf_free(proberesp_ies);
4196         }
4197         wpa_supplicant_ap_update_beacon(wpa_s);
4198 }
4199
4200
4201 static void wpas_p2p_idle_update(void *ctx, int idle)
4202 {
4203         struct wpa_supplicant *wpa_s = ctx;
4204         if (!wpa_s->ap_iface)
4205                 return;
4206         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
4207         if (idle)
4208                 wpas_p2p_set_group_idle_timeout(wpa_s);
4209         else
4210                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4211 }
4212
4213
4214 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
4215                                        struct wpa_ssid *ssid)
4216 {
4217         struct p2p_group *group;
4218         struct p2p_group_config *cfg;
4219
4220         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4221                 return NULL;
4222         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4223                 return NULL;
4224
4225         cfg = os_zalloc(sizeof(*cfg));
4226         if (cfg == NULL)
4227                 return NULL;
4228
4229         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
4230                 cfg->persistent_group = 2;
4231         else if (ssid->p2p_persistent_group)
4232                 cfg->persistent_group = 1;
4233         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
4234         if (wpa_s->max_stations &&
4235             wpa_s->max_stations < wpa_s->conf->max_num_sta)
4236                 cfg->max_clients = wpa_s->max_stations;
4237         else
4238                 cfg->max_clients = wpa_s->conf->max_num_sta;
4239         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
4240         cfg->ssid_len = ssid->ssid_len;
4241         cfg->cb_ctx = wpa_s;
4242         cfg->ie_update = wpas_p2p_ie_update;
4243         cfg->idle_update = wpas_p2p_idle_update;
4244
4245         group = p2p_group_init(wpa_s->global->p2p, cfg);
4246         if (group == NULL)
4247                 os_free(cfg);
4248         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
4249                 p2p_group_notif_formation_done(group);
4250         wpa_s->p2p_group = group;
4251         return group;
4252 }
4253
4254
4255 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4256                           int registrar)
4257 {
4258         struct wpa_ssid *ssid = wpa_s->current_ssid;
4259
4260         if (!wpa_s->p2p_in_provisioning) {
4261                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
4262                            "provisioning not in progress");
4263                 return;
4264         }
4265
4266         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4267                 u8 go_dev_addr[ETH_ALEN];
4268                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
4269                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4270                                           ssid->ssid_len);
4271                 /* Clear any stored provisioning info */
4272                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
4273         }
4274
4275         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
4276                              NULL);
4277         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
4278                 /*
4279                  * Use a separate timeout for initial data connection to
4280                  * complete to allow the group to be removed automatically if
4281                  * something goes wrong in this step before the P2P group idle
4282                  * timeout mechanism is taken into use.
4283                  */
4284                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
4285                                        wpas_p2p_group_formation_timeout,
4286                                        wpa_s->parent, NULL);
4287         }
4288         if (wpa_s->global->p2p)
4289                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
4290         else if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4291                 wpa_drv_wps_success_cb(wpa_s, peer_addr);
4292         wpas_group_formation_completed(wpa_s, 1);
4293 }
4294
4295
4296 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
4297                          struct wps_event_fail *fail)
4298 {
4299         if (!wpa_s->p2p_in_provisioning) {
4300                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
4301                            "provisioning not in progress");
4302                 return;
4303         }
4304
4305         if (wpa_s->go_params) {
4306                 p2p_clear_provisioning_info(
4307                         wpa_s->global->p2p,
4308                         wpa_s->go_params->peer_device_addr);
4309         }
4310
4311         wpas_notify_p2p_wps_failed(wpa_s, fail);
4312 }
4313
4314
4315 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4316                        const char *config_method,
4317                        enum wpas_p2p_prov_disc_use use)
4318 {
4319         u16 config_methods;
4320
4321         wpa_s->p2p_fallback_to_go_neg = 0;
4322         wpa_s->pending_pd_use = NORMAL_PD;
4323         if (os_strncmp(config_method, "display", 7) == 0)
4324                 config_methods = WPS_CONFIG_DISPLAY;
4325         else if (os_strncmp(config_method, "keypad", 6) == 0)
4326                 config_methods = WPS_CONFIG_KEYPAD;
4327         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
4328                  os_strncmp(config_method, "pushbutton", 10) == 0)
4329                 config_methods = WPS_CONFIG_PUSHBUTTON;
4330         else {
4331                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
4332                 return -1;
4333         }
4334
4335         if (use == WPAS_P2P_PD_AUTO) {
4336                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
4337                 wpa_s->pending_pd_config_methods = config_methods;
4338                 wpa_s->p2p_auto_pd = 1;
4339                 wpa_s->p2p_auto_join = 0;
4340                 wpa_s->pending_pd_before_join = 0;
4341                 wpa_s->auto_pd_scan_retry = 0;
4342                 wpas_p2p_stop_find(wpa_s);
4343                 wpa_s->p2p_join_scan_count = 0;
4344                 os_get_time(&wpa_s->p2p_auto_started);
4345                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
4346                            wpa_s->p2p_auto_started.sec,
4347                            wpa_s->p2p_auto_started.usec);
4348                 wpas_p2p_join_scan(wpa_s, NULL);
4349                 return 0;
4350         }
4351
4352         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4353                 return wpa_drv_p2p_prov_disc_req(wpa_s, peer_addr,
4354                                                  config_methods,
4355                                                  use == WPAS_P2P_PD_FOR_JOIN);
4356         }
4357
4358         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
4359                 return -1;
4360
4361         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
4362                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
4363                                  0, 1);
4364 }
4365
4366
4367 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
4368                               char *end)
4369 {
4370         return p2p_scan_result_text(ies, ies_len, buf, end);
4371 }
4372
4373
4374 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
4375 {
4376         if (!offchannel_pending_action_tx(wpa_s))
4377                 return;
4378
4379         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
4380                    "operation request");
4381         offchannel_clear_pending_action_tx(wpa_s);
4382 }
4383
4384
4385 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
4386                   enum p2p_discovery_type type,
4387                   unsigned int num_req_dev_types, const u8 *req_dev_types,
4388                   const u8 *dev_id, unsigned int search_delay)
4389 {
4390         wpas_p2p_clear_pending_action_tx(wpa_s);
4391         wpa_s->p2p_long_listen = 0;
4392
4393         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4394                 return wpa_drv_p2p_find(wpa_s, timeout, type);
4395
4396         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
4397             wpa_s->p2p_in_provisioning)
4398                 return -1;
4399
4400         wpa_supplicant_cancel_sched_scan(wpa_s);
4401
4402         return p2p_find(wpa_s->global->p2p, timeout, type,
4403                         num_req_dev_types, req_dev_types, dev_id,
4404                         search_delay);
4405 }
4406
4407
4408 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
4409 {
4410         wpas_p2p_clear_pending_action_tx(wpa_s);
4411         wpa_s->p2p_long_listen = 0;
4412         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4413         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4414         wpa_s->global->p2p_cb_on_scan_complete = 0;
4415
4416         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT) {
4417                 wpa_drv_p2p_stop_find(wpa_s);
4418                 return 1;
4419         }
4420
4421         if (wpa_s->global->p2p)
4422                 p2p_stop_find(wpa_s->global->p2p);
4423
4424         return 0;
4425 }
4426
4427
4428 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
4429 {
4430         if (wpas_p2p_stop_find_oper(wpa_s) > 0)
4431                 return;
4432         wpas_p2p_remove_pending_group_interface(wpa_s);
4433 }
4434
4435
4436 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
4437 {
4438         struct wpa_supplicant *wpa_s = eloop_ctx;
4439         wpa_s->p2p_long_listen = 0;
4440 }
4441
4442
4443 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
4444 {
4445         int res;
4446
4447         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4448                 return -1;
4449
4450         wpa_supplicant_cancel_sched_scan(wpa_s);
4451         wpas_p2p_clear_pending_action_tx(wpa_s);
4452
4453         if (timeout == 0) {
4454                 /*
4455                  * This is a request for unlimited Listen state. However, at
4456                  * least for now, this is mapped to a Listen state for one
4457                  * hour.
4458                  */
4459                 timeout = 3600;
4460         }
4461         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4462         wpa_s->p2p_long_listen = 0;
4463
4464         /*
4465          * Stop previous find/listen operation to avoid trying to request a new
4466          * remain-on-channel operation while the driver is still running the
4467          * previous one.
4468          */
4469         if (wpa_s->global->p2p)
4470                 p2p_stop_find(wpa_s->global->p2p);
4471
4472         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
4473         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
4474                 wpa_s->p2p_long_listen = timeout * 1000;
4475                 eloop_register_timeout(timeout, 0,
4476                                        wpas_p2p_long_listen_timeout,
4477                                        wpa_s, NULL);
4478         }
4479
4480         return res;
4481 }
4482
4483
4484 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
4485                           u8 *buf, size_t len, int p2p_group)
4486 {
4487         struct wpabuf *p2p_ie;
4488         int ret;
4489
4490         if (wpa_s->global->p2p_disabled)
4491                 return -1;
4492         if (wpa_s->global->p2p == NULL)
4493                 return -1;
4494         if (bss == NULL)
4495                 return -1;
4496
4497         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
4498         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
4499                                p2p_group, p2p_ie);
4500         wpabuf_free(p2p_ie);
4501
4502         return ret;
4503 }
4504
4505
4506 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
4507                           const u8 *dst, const u8 *bssid,
4508                           const u8 *ie, size_t ie_len, int ssi_signal)
4509 {
4510         if (wpa_s->global->p2p_disabled)
4511                 return 0;
4512         if (wpa_s->global->p2p == NULL)
4513                 return 0;
4514
4515         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
4516                                  ie, ie_len)) {
4517         case P2P_PREQ_NOT_P2P:
4518                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
4519                                  ssi_signal);
4520                 /* fall through */
4521         case P2P_PREQ_MALFORMED:
4522         case P2P_PREQ_NOT_LISTEN:
4523         case P2P_PREQ_NOT_PROCESSED:
4524         default: /* make gcc happy */
4525                 return 0;
4526         case P2P_PREQ_PROCESSED:
4527                 return 1;
4528         }
4529 }
4530
4531
4532 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
4533                         const u8 *sa, const u8 *bssid,
4534                         u8 category, const u8 *data, size_t len, int freq)
4535 {
4536         if (wpa_s->global->p2p_disabled)
4537                 return;
4538         if (wpa_s->global->p2p == NULL)
4539                 return;
4540
4541         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
4542                       freq);
4543 }
4544
4545
4546 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
4547 {
4548         if (wpa_s->global->p2p_disabled)
4549                 return;
4550         if (wpa_s->global->p2p == NULL)
4551                 return;
4552
4553         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4554 }
4555
4556
4557 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
4558 {
4559         p2p_group_deinit(wpa_s->p2p_group);
4560         wpa_s->p2p_group = NULL;
4561
4562         wpa_s->ap_configured_cb = NULL;
4563         wpa_s->ap_configured_cb_ctx = NULL;
4564         wpa_s->ap_configured_cb_data = NULL;
4565         wpa_s->connect_without_scan = NULL;
4566 }
4567
4568
4569 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
4570 {
4571         wpa_s->p2p_long_listen = 0;
4572
4573         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4574                 return wpa_drv_p2p_reject(wpa_s, addr);
4575
4576         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4577                 return -1;
4578
4579         return p2p_reject(wpa_s->global->p2p, addr);
4580 }
4581
4582
4583 /* Invite to reinvoke a persistent group */
4584 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4585                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
4586                     int ht40, int pref_freq)
4587 {
4588         enum p2p_invite_role role;
4589         u8 *bssid = NULL, bssid_buf[ETH_ALEN];
4590         int force_freq = 0, oper_freq = 0;
4591         int res;
4592
4593         wpa_s->p2p_persistent_go_freq = freq;
4594         wpa_s->p2p_go_ht40 = !!ht40;
4595         if (ssid->mode == WPAS_MODE_P2P_GO) {
4596                 role = P2P_INVITE_ROLE_GO;
4597                 if (peer_addr == NULL) {
4598                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
4599                                    "address in invitation command");
4600                         return -1;
4601                 }
4602                 if (wpas_p2p_create_iface(wpa_s)) {
4603                         if (wpas_p2p_add_group_interface(wpa_s,
4604                                                          WPA_IF_P2P_GO) < 0) {
4605                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
4606                                            "allocate a new interface for the "
4607                                            "group");
4608                                 return -1;
4609                         }
4610                         bssid = wpa_s->pending_interface_addr;
4611                 } else
4612                         bssid = wpa_s->own_addr;
4613         } else {
4614                 role = P2P_INVITE_ROLE_CLIENT;
4615                 peer_addr = ssid->bssid;
4616         }
4617         wpa_s->pending_invite_ssid_id = ssid->id;
4618
4619         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid_buf) == 0 &&
4620             wpa_s->assoc_freq) {
4621                 oper_freq = wpa_s->assoc_freq;
4622                 if (bssid == NULL)
4623                         bssid = bssid_buf;
4624         } else {
4625                 oper_freq = wpa_drv_shared_freq(wpa_s);
4626                 if (oper_freq < 0)
4627                         oper_freq = 0;
4628         }
4629
4630         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
4631                                    &oper_freq);
4632         if (res)
4633                 return res;
4634
4635         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4636                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4637                                           ssid->ssid, ssid->ssid_len,
4638                                           go_dev_addr, 1);
4639
4640         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4641                 return -1;
4642
4643         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4644                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
4645                           1, pref_freq);
4646 }
4647
4648
4649 /* Invite to join an active group */
4650 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
4651                           const u8 *peer_addr, const u8 *go_dev_addr)
4652 {
4653         struct wpa_global *global = wpa_s->global;
4654         enum p2p_invite_role role;
4655         u8 *bssid = NULL, bssid_buf[ETH_ALEN];
4656         struct wpa_ssid *ssid;
4657         int persistent;
4658         int force_freq = 0, oper_freq = 0, pref_freq = 0;
4659         int res;
4660
4661         wpa_s->p2p_persistent_go_freq = 0;
4662         wpa_s->p2p_go_ht40 = 0;
4663
4664         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4665                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4666                         break;
4667         }
4668         if (wpa_s == NULL) {
4669                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
4670                 return -1;
4671         }
4672
4673         ssid = wpa_s->current_ssid;
4674         if (ssid == NULL) {
4675                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
4676                            "invitation");
4677                 return -1;
4678         }
4679
4680         persistent = ssid->p2p_persistent_group &&
4681                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
4682                                         ssid->ssid, ssid->ssid_len);
4683
4684         if (ssid->mode == WPAS_MODE_P2P_GO) {
4685                 role = P2P_INVITE_ROLE_ACTIVE_GO;
4686                 bssid = wpa_s->own_addr;
4687                 if (go_dev_addr == NULL)
4688                         go_dev_addr = wpa_s->global->p2p_dev_addr;
4689         } else {
4690                 role = P2P_INVITE_ROLE_CLIENT;
4691                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
4692                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
4693                                    "invite to current group");
4694                         return -1;
4695                 }
4696                 bssid = wpa_s->bssid;
4697                 if (go_dev_addr == NULL &&
4698                     !is_zero_ether_addr(wpa_s->go_dev_addr))
4699                         go_dev_addr = wpa_s->go_dev_addr;
4700         }
4701         wpa_s->parent->pending_invite_ssid_id = -1;
4702
4703         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4704                 return wpa_drv_p2p_invite(wpa_s, peer_addr, role, bssid,
4705                                           ssid->ssid, ssid->ssid_len,
4706                                           go_dev_addr, persistent);
4707
4708         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4709                 return -1;
4710
4711         if (wpa_s->current_ssid && wpa_drv_get_bssid(wpa_s, bssid_buf) == 0 &&
4712             wpa_s->assoc_freq) {
4713                 oper_freq = wpa_s->assoc_freq;
4714                 if (bssid == NULL)
4715                         bssid = bssid_buf;
4716         } else {
4717                 oper_freq = wpa_drv_shared_freq(wpa_s);
4718                 if (oper_freq < 0)
4719                         oper_freq = 0;
4720         }
4721
4722         res = wpas_p2p_setup_freqs(wpa_s, 0, &force_freq, &pref_freq,
4723                                    &oper_freq);
4724         if (res)
4725                 return res;
4726
4727         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
4728                           ssid->ssid, ssid->ssid_len, force_freq,
4729                           go_dev_addr, persistent, pref_freq);
4730 }
4731
4732
4733 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
4734 {
4735         struct wpa_ssid *ssid = wpa_s->current_ssid;
4736         const char *ssid_txt;
4737         u8 go_dev_addr[ETH_ALEN];
4738         int network_id = -1;
4739         int persistent;
4740         int freq;
4741
4742         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
4743                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
4744                                      wpa_s->parent, NULL);
4745         }
4746
4747         if (!wpa_s->show_group_started || !ssid)
4748                 goto done;
4749
4750         wpa_s->show_group_started = 0;
4751
4752         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
4753         os_memset(go_dev_addr, 0, ETH_ALEN);
4754         if (ssid->bssid_set)
4755                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
4756         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
4757                                                ssid->ssid_len);
4758         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
4759
4760         if (wpa_s->global->p2p_group_formation == wpa_s)
4761                 wpa_s->global->p2p_group_formation = NULL;
4762
4763         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
4764                 (int) wpa_s->assoc_freq;
4765         if (ssid->passphrase == NULL && ssid->psk_set) {
4766                 char psk[65];
4767                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
4768                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4769                         "%s client ssid=\"%s\" freq=%d psk=%s go_dev_addr="
4770                         MACSTR "%s",
4771                         wpa_s->ifname, ssid_txt, freq, psk,
4772                         MAC2STR(go_dev_addr),
4773                         persistent ? " [PERSISTENT]" : "");
4774         } else {
4775                 wpa_msg(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
4776                         "%s client ssid=\"%s\" freq=%d passphrase=\"%s\" "
4777                         "go_dev_addr=" MACSTR "%s",
4778                         wpa_s->ifname, ssid_txt, freq,
4779                         ssid->passphrase ? ssid->passphrase : "",
4780                         MAC2STR(go_dev_addr),
4781                         persistent ? " [PERSISTENT]" : "");
4782         }
4783
4784         if (persistent)
4785                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
4786                                                              ssid, go_dev_addr);
4787         if (network_id < 0)
4788                 network_id = ssid->id;
4789         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
4790
4791 done:
4792         if (wpa_s->global->p2p_cb_on_scan_complete && !wpa_s->global->p2p_disabled &&
4793             wpa_s->global->p2p != NULL) {
4794                 wpa_s->global->p2p_cb_on_scan_complete = 0;
4795                 if (p2p_other_scan_completed(wpa_s->global->p2p) == 1) {
4796                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Pending P2P operation "
4797                                 "continued after successful connection");
4798                         p2p_increase_search_delay(
4799                                 wpa_s->global->p2p,
4800                                 wpas_p2p_search_delay(wpa_s));
4801                 }
4802         }
4803 }
4804
4805
4806 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
4807                           u32 interval1, u32 duration2, u32 interval2)
4808 {
4809         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4810                 return -1;
4811         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4812                 return -1;
4813
4814         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
4815             wpa_s->current_ssid == NULL ||
4816             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
4817                 return -1;
4818
4819         return p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
4820                                 wpa_s->own_addr, wpa_s->assoc_freq,
4821                                 duration1, interval1, duration2, interval2);
4822 }
4823
4824
4825 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
4826                         unsigned int interval)
4827 {
4828         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4829                 return -1;
4830
4831         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4832                 return -1;
4833
4834         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
4835 }
4836
4837
4838 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
4839 {
4840         if (wpa_s->current_ssid == NULL) {
4841                 /*
4842                  * current_ssid can be cleared when P2P client interface gets
4843                  * disconnected, so assume this interface was used as P2P
4844                  * client.
4845                  */
4846                 return 1;
4847         }
4848         return wpa_s->current_ssid->p2p_group &&
4849                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
4850 }
4851
4852
4853 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
4854 {
4855         struct wpa_supplicant *wpa_s = eloop_ctx;
4856
4857         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
4858                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
4859                            "disabled");
4860                 return;
4861         }
4862
4863         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
4864                    "group");
4865         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
4866 }
4867
4868
4869 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
4870 {
4871         int timeout;
4872
4873         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
4874                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
4875
4876         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
4877                 return;
4878
4879         timeout = wpa_s->conf->p2p_group_idle;
4880         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
4881             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
4882             timeout = P2P_MAX_CLIENT_IDLE;
4883
4884         if (timeout == 0)
4885                 return;
4886
4887         if (timeout < 0) {
4888                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
4889                         timeout = 0; /* special client mode no-timeout */
4890                 else
4891                         return;
4892         }
4893
4894         if (wpa_s->p2p_in_provisioning) {
4895                 /*
4896                  * Use the normal group formation timeout during the
4897                  * provisioning phase to avoid terminating this process too
4898                  * early due to group idle timeout.
4899                  */
4900                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4901                            "during provisioning");
4902                 return;
4903         }
4904
4905         if (wpa_s->show_group_started) {
4906                 /*
4907                  * Use the normal group formation timeout between the end of
4908                  * the provisioning phase and completion of 4-way handshake to
4909                  * avoid terminating this process too early due to group idle
4910                  * timeout.
4911                  */
4912                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
4913                            "while waiting for initial 4-way handshake to "
4914                            "complete");
4915                 return;
4916         }
4917
4918         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
4919                    timeout);
4920         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
4921                                wpa_s, NULL);
4922 }
4923
4924
4925 /* Returns 1 if the interface was removed */
4926 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4927                           u16 reason_code, const u8 *ie, size_t ie_len,
4928                           int locally_generated)
4929 {
4930         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4931                 return 0;
4932         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4933                 return 0;
4934
4935         if (!locally_generated)
4936                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4937                                  ie_len);
4938
4939         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
4940             wpa_s->current_ssid &&
4941             wpa_s->current_ssid->p2p_group &&
4942             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
4943                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
4944                            "session is ending");
4945                 if (wpas_p2p_group_delete(wpa_s,
4946                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
4947                     > 0)
4948                         return 1;
4949         }
4950
4951         return 0;
4952 }
4953
4954
4955 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
4956                              u16 reason_code, const u8 *ie, size_t ie_len,
4957                              int locally_generated)
4958 {
4959         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4960                 return;
4961         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
4962                 return;
4963
4964         if (!locally_generated)
4965                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
4966                                    ie_len);
4967 }
4968
4969
4970 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
4971 {
4972         struct p2p_data *p2p = wpa_s->global->p2p;
4973
4974         if (p2p == NULL)
4975                 return;
4976
4977         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4978                 return;
4979
4980         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
4981                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
4982
4983         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
4984                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
4985
4986         if (wpa_s->wps &&
4987             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
4988                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
4989
4990         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
4991                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
4992
4993         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
4994                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
4995                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
4996                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
4997                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
4998         }
4999
5000         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
5001                 p2p_set_sec_dev_types(p2p,
5002                                       (void *) wpa_s->conf->sec_device_type,
5003                                       wpa_s->conf->num_sec_device_types);
5004
5005         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
5006                 int i;
5007                 p2p_remove_wps_vendor_extensions(p2p);
5008                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
5009                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
5010                                 continue;
5011                         p2p_add_wps_vendor_extension(
5012                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
5013                 }
5014         }
5015
5016         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
5017             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
5018                 char country[3];
5019                 country[0] = wpa_s->conf->country[0];
5020                 country[1] = wpa_s->conf->country[1];
5021                 country[2] = 0x04;
5022                 p2p_set_country(p2p, country);
5023         }
5024
5025         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
5026                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
5027                                      wpa_s->conf->p2p_ssid_postfix ?
5028                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
5029                                      0);
5030         }
5031
5032         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
5033                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
5034
5035         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
5036                 u8 reg_class, channel;
5037                 int ret;
5038                 unsigned int r;
5039                 if (wpa_s->conf->p2p_listen_reg_class &&
5040                     wpa_s->conf->p2p_listen_channel) {
5041                         reg_class = wpa_s->conf->p2p_listen_reg_class;
5042                         channel = wpa_s->conf->p2p_listen_channel;
5043                 } else {
5044                         reg_class = 81;
5045                         /*
5046                          * Pick one of the social channels randomly as the
5047                          * listen channel.
5048                          */
5049                         os_get_random((u8 *) &r, sizeof(r));
5050                         channel = 1 + (r % 3) * 5;
5051                 }
5052                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
5053                 if (ret)
5054                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
5055                                    "failed: %d", ret);
5056         }
5057         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
5058                 u8 op_reg_class, op_channel, cfg_op_channel;
5059                 int ret = 0;
5060                 unsigned int r;
5061                 if (wpa_s->conf->p2p_oper_reg_class &&
5062                     wpa_s->conf->p2p_oper_channel) {
5063                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
5064                         op_channel = wpa_s->conf->p2p_oper_channel;
5065                         cfg_op_channel = 1;
5066                 } else {
5067                         op_reg_class = 81;
5068                         /*
5069                          * Use random operation channel from (1, 6, 11)
5070                          *if no other preference is indicated.
5071                          */
5072                         os_get_random((u8 *) &r, sizeof(r));
5073                         op_channel = 1 + (r % 3) * 5;
5074                         cfg_op_channel = 0;
5075                 }
5076                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
5077                                            cfg_op_channel);
5078                 if (ret)
5079                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
5080                                    "failed: %d", ret);
5081         }
5082
5083         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
5084                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
5085                                       wpa_s->conf->p2p_pref_chan) < 0) {
5086                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
5087                                    "update failed");
5088                 }
5089         }
5090 }
5091
5092
5093 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
5094                      int duration)
5095 {
5096         if (!wpa_s->ap_iface)
5097                 return -1;
5098         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
5099                                    duration);
5100 }
5101
5102
5103 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
5104 {
5105         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5106                 return -1;
5107         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT)
5108                 return -1;
5109
5110         wpa_s->global->cross_connection = enabled;
5111         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
5112
5113         if (!enabled) {
5114                 struct wpa_supplicant *iface;
5115
5116                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
5117                 {
5118                         if (iface->cross_connect_enabled == 0)
5119                                 continue;
5120
5121                         iface->cross_connect_enabled = 0;
5122                         iface->cross_connect_in_use = 0;
5123                         wpa_msg(iface->parent, MSG_INFO,
5124                                 P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
5125                                 iface->ifname, iface->cross_connect_uplink);
5126                 }
5127         }
5128
5129         return 0;
5130 }
5131
5132
5133 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
5134 {
5135         struct wpa_supplicant *iface;
5136
5137         if (!uplink->global->cross_connection)
5138                 return;
5139
5140         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
5141                 if (!iface->cross_connect_enabled)
5142                         continue;
5143                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
5144                     0)
5145                         continue;
5146                 if (iface->ap_iface == NULL)
5147                         continue;
5148                 if (iface->cross_connect_in_use)
5149                         continue;
5150
5151                 iface->cross_connect_in_use = 1;
5152                 wpa_msg(iface->parent, MSG_INFO,
5153                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
5154                         iface->ifname, iface->cross_connect_uplink);
5155         }
5156 }
5157
5158
5159 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
5160 {
5161         struct wpa_supplicant *iface;
5162
5163         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
5164                 if (!iface->cross_connect_enabled)
5165                         continue;
5166                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
5167                     0)
5168                         continue;
5169                 if (!iface->cross_connect_in_use)
5170                         continue;
5171
5172                 wpa_msg(iface->parent, MSG_INFO,
5173                         P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
5174                         iface->ifname, iface->cross_connect_uplink);
5175                 iface->cross_connect_in_use = 0;
5176         }
5177 }
5178
5179
5180 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
5181 {
5182         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
5183             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
5184             wpa_s->cross_connect_disallowed)
5185                 wpas_p2p_disable_cross_connect(wpa_s);
5186         else
5187                 wpas_p2p_enable_cross_connect(wpa_s);
5188         if (!wpa_s->ap_iface &&
5189             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
5190                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
5191 }
5192
5193
5194 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
5195 {
5196         wpas_p2p_disable_cross_connect(wpa_s);
5197         if (!wpa_s->ap_iface &&
5198             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
5199                                          wpa_s, NULL))
5200                 wpas_p2p_set_group_idle_timeout(wpa_s);
5201 }
5202
5203
5204 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
5205 {
5206         struct wpa_supplicant *iface;
5207
5208         if (!wpa_s->global->cross_connection)
5209                 return;
5210
5211         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
5212                 if (iface == wpa_s)
5213                         continue;
5214                 if (iface->drv_flags &
5215                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
5216                         continue;
5217                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
5218                         continue;
5219
5220                 wpa_s->cross_connect_enabled = 1;
5221                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
5222                            sizeof(wpa_s->cross_connect_uplink));
5223                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
5224                            "%s to %s whenever uplink is available",
5225                            wpa_s->ifname, wpa_s->cross_connect_uplink);
5226
5227                 if (iface->ap_iface || iface->current_ssid == NULL ||
5228                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
5229                     iface->cross_connect_disallowed ||
5230                     iface->wpa_state != WPA_COMPLETED)
5231                         break;
5232
5233                 wpa_s->cross_connect_in_use = 1;
5234                 wpa_msg(wpa_s->parent, MSG_INFO,
5235                         P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
5236                         wpa_s->ifname, wpa_s->cross_connect_uplink);
5237                 break;
5238         }
5239 }
5240
5241
5242 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
5243 {
5244         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
5245             !wpa_s->p2p_in_provisioning)
5246                 return 0; /* not P2P client operation */
5247
5248         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
5249                    "session overlap");
5250         if (wpa_s != wpa_s->parent)
5251                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
5252
5253         if (wpa_s->global->p2p)
5254                 p2p_group_formation_failed(wpa_s->global->p2p);
5255
5256         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5257                              wpa_s->parent, NULL);
5258
5259         wpas_group_formation_completed(wpa_s, 0);
5260         return 1;
5261 }
5262
5263
5264 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
5265 {
5266         struct p2p_channels chan;
5267
5268         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
5269                 return;
5270
5271         os_memset(&chan, 0, sizeof(chan));
5272         if (wpas_p2p_setup_channels(wpa_s, &chan)) {
5273                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
5274                            "channel list");
5275                 return;
5276         }
5277
5278         p2p_update_channel_list(wpa_s->global->p2p, &chan);
5279 }
5280
5281
5282 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
5283                                      struct wpa_scan_results *scan_res)
5284 {
5285         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
5286 }
5287
5288
5289 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
5290 {
5291         struct wpa_global *global = wpa_s->global;
5292         int found = 0;
5293         const u8 *peer;
5294
5295         if (global->p2p == NULL)
5296                 return -1;
5297
5298         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
5299
5300         if (wpa_s->pending_interface_name[0] &&
5301             !is_zero_ether_addr(wpa_s->pending_interface_addr))
5302                 found = 1;
5303
5304         peer = p2p_get_go_neg_peer(global->p2p);
5305         if (peer) {
5306                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
5307                            MACSTR, MAC2STR(peer));
5308                 p2p_unauthorize(global->p2p, peer);
5309                 found = 1;
5310         }
5311
5312         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
5313                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
5314                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
5315                 found = 1;
5316         }
5317
5318         if (wpa_s->pending_pd_before_join) {
5319                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
5320                 wpa_s->pending_pd_before_join = 0;
5321                 found = 1;
5322         }
5323
5324         wpas_p2p_stop_find(wpa_s);
5325
5326         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5327                 if (wpa_s == global->p2p_group_formation &&
5328                     (wpa_s->p2p_in_provisioning ||
5329                      wpa_s->parent->pending_interface_type ==
5330                      WPA_IF_P2P_CLIENT)) {
5331                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
5332                                    "formation found - cancelling",
5333                                    wpa_s->ifname);
5334                         found = 1;
5335                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5336                                              wpa_s->parent, NULL);
5337                         if (wpa_s->p2p_in_provisioning) {
5338                                 wpas_group_formation_completed(wpa_s, 0);
5339                                 break;
5340                         }
5341                         wpas_p2p_group_delete(wpa_s,
5342                                               P2P_GROUP_REMOVAL_REQUESTED);
5343                         break;
5344                 }
5345         }
5346
5347         if (!found) {
5348                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
5349                 return -1;
5350         }
5351
5352         return 0;
5353 }
5354
5355
5356 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
5357 {
5358         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
5359                 return;
5360
5361         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
5362                    "being available anymore");
5363         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
5364 }
5365
5366
5367 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
5368                                    int freq_24, int freq_5, int freq_overall)
5369 {
5370         struct p2p_data *p2p = wpa_s->global->p2p;
5371         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5372                 return;
5373         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
5374 }
5375
5376
5377 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
5378 {
5379         u8 peer[ETH_ALEN];
5380         struct p2p_data *p2p = wpa_s->global->p2p;
5381
5382         if (p2p == NULL || (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_MGMT))
5383                 return -1;
5384
5385         if (hwaddr_aton(addr, peer))
5386                 return -1;
5387
5388         return p2p_unauthorize(p2p, peer);
5389 }
5390
5391
5392 /**
5393  * wpas_p2p_disconnect - Disconnect from a P2P Group
5394  * @wpa_s: Pointer to wpa_supplicant data
5395  * Returns: 0 on success, -1 on failure
5396  *
5397  * This can be used to disconnect from a group in which the local end is a P2P
5398  * Client or to end a P2P Group in case the local end is the Group Owner. If a
5399  * virtual network interface was created for this group, that interface will be
5400  * removed. Otherwise, only the configured P2P group network will be removed
5401  * from the interface.
5402  */
5403 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
5404 {
5405
5406         if (wpa_s == NULL)
5407                 return -1;
5408
5409         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
5410                 -1 : 0;
5411 }
5412
5413
5414 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
5415 {
5416         int ret;
5417
5418         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5419                 return 0;
5420
5421         ret = p2p_in_progress(wpa_s->global->p2p);
5422         if (ret == 0) {
5423                 /*
5424                  * Check whether there is an ongoing WPS provisioning step (or
5425                  * other parts of group formation) on another interface since
5426                  * p2p_in_progress() does not report this to avoid issues for
5427                  * scans during such provisioning step.
5428                  */
5429                 if (wpa_s->global->p2p_group_formation &&
5430                     wpa_s->global->p2p_group_formation != wpa_s) {
5431                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
5432                                 "in group formation",
5433                                 wpa_s->global->p2p_group_formation->ifname);
5434                         ret = 1;
5435                 }
5436         }
5437
5438         return ret;
5439 }
5440
5441
5442 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
5443                               struct wpa_ssid *ssid)
5444 {
5445         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
5446             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5447                                  wpa_s->parent, NULL) > 0) {
5448                 /**
5449                  * Remove the network by scheduling the group formation
5450                  * timeout to happen immediately. The teardown code
5451                  * needs to be scheduled to run asynch later so that we
5452                  * don't delete data from under ourselves unexpectedly.
5453                  * Calling wpas_p2p_group_formation_timeout directly
5454                  * causes a series of crashes in WPS failure scenarios.
5455                  */
5456                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
5457                            "P2P group network getting removed");
5458                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
5459                                        wpa_s->parent, NULL);
5460         }
5461 }
5462
5463
5464 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
5465                                           const u8 *addr, const u8 *ssid,
5466                                           size_t ssid_len)
5467 {
5468         struct wpa_ssid *s;
5469         size_t i;
5470
5471         for (s = wpa_s->conf->ssid; s; s = s->next) {
5472                 if (s->disabled != 2)
5473                         continue;
5474                 if (ssid &&
5475                     (ssid_len != s->ssid_len ||
5476                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
5477                         continue;
5478                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
5479                         return s; /* peer is GO in the persistent group */
5480                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
5481                         continue;
5482                 for (i = 0; i < s->num_p2p_clients; i++) {
5483                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
5484                                       addr, ETH_ALEN) == 0)
5485                                 return s; /* peer is P2P client in persistent
5486                                            * group */
5487                 }
5488         }
5489
5490         return NULL;
5491 }
5492
5493
5494 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
5495                                        const u8 *addr)
5496 {
5497         if (addr == NULL)
5498                 return;
5499         wpas_p2p_add_persistent_group_client(wpa_s, addr);
5500 }
5501
5502
5503 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
5504                                         int group_added)
5505 {
5506         struct wpa_supplicant *group = wpa_s;
5507         if (wpa_s->global->p2p_group_formation)
5508                 group = wpa_s->global->p2p_group_formation;
5509         wpa_s = wpa_s->parent;
5510         offchannel_send_action_done(wpa_s);
5511         if (group_added)
5512                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
5513         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
5514         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
5515                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
5516                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
5517                          wpa_s->p2p_persistent_id,
5518                          wpa_s->p2p_pd_before_go_neg,
5519                          wpa_s->p2p_go_ht40);
5520 }
5521
5522
5523 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
5524 {
5525         if (!wpa_s->p2p_fallback_to_go_neg ||
5526             wpa_s->p2p_in_provisioning <= 5)
5527                 return 0;
5528
5529         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
5530                 return 0; /* peer operating as a GO */
5531
5532         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
5533                 "fallback to GO Negotiation");
5534         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
5535
5536         return 1;
5537 }
5538
5539
5540 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
5541 {
5542         const char *rn, *rn2;
5543         struct wpa_supplicant *ifs;
5544
5545         if (wpa_s->wpa_state > WPA_SCANNING) {
5546                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
5547                         "concurrent operation",
5548                         P2P_CONCURRENT_SEARCH_DELAY);
5549                 return P2P_CONCURRENT_SEARCH_DELAY;
5550         }
5551
5552         if (!wpa_s->driver->get_radio_name)
5553                 return 0;
5554         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
5555         if (rn == NULL || rn[0] == '\0')
5556                 return 0;
5557
5558         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
5559                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
5560                         continue;
5561
5562                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
5563                 if (!rn2 || os_strcmp(rn, rn2) != 0)
5564                         continue;
5565                 if (ifs->wpa_state > WPA_SCANNING) {
5566                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
5567                                 "delay due to concurrent operation on "
5568                                 "interface %s",
5569                                 P2P_CONCURRENT_SEARCH_DELAY, ifs->ifname);
5570                         return P2P_CONCURRENT_SEARCH_DELAY;
5571                 }
5572         }
5573
5574         return 0;
5575 }