libeap/wpa_supplicant/p2p_supplicant.c

   1 /*
   2  * wpa_supplicant - P2P
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi>
   5  *
   6  * This software may be distributed under the terms of the BSD license.
   7  * See README for more details.
   8  */
   9
  10 #include "includes.h"
  11
  12 #include "common.h"
  13 #include "eloop.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/wpa_ctrl.h"
  17 #include "wps/wps_i.h"
  18 #include "p2p/p2p.h"
  19 #include "ap/hostapd.h"
  20 #include "ap/ap_config.h"
  21 #include "ap/sta_info.h"
  22 #include "ap/ap_drv_ops.h"
  23 #include "ap/wps_hostapd.h"
  24 #include "ap/p2p_hostapd.h"
  25 #include "ap/dfs.h"
  26 #include "eapol_supp/eapol_supp_sm.h"
  27 #include "rsn_supp/wpa.h"
  28 #include "wpa_supplicant_i.h"
  29 #include "driver_i.h"
  30 #include "ap.h"
  31 #include "config_ssid.h"
  32 #include "config.h"
  33 #include "notify.h"
  34 #include "scan.h"
  35 #include "bss.h"
  36 #include "offchannel.h"
  37 #include "wps_supplicant.h"
  38 #include "p2p_supplicant.h"
  39 #include "wifi_display.h"
  40
  41
  42 /*
  43  * How many times to try to scan to find the GO before giving up on join
  44  * request.
  45  */
  46 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  47
  48 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
  49
  50 /**
  51  * Defines time interval in seconds when a GO needs to evacuate a frequency that
  52  * it is currently using, but is no longer valid for P2P use cases.
  53  */
  54 #define P2P_GO_FREQ_CHANGE_TIME 5
  55
  56 #ifndef P2P_MAX_CLIENT_IDLE
  57 /*
  58  * How many seconds to try to reconnect to the GO when connection in P2P client
  59  * role has been lost.
  60  */
  61 #define P2P_MAX_CLIENT_IDLE 10
  62 #endif /* P2P_MAX_CLIENT_IDLE */
  63
  64 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  65 /*
  66  * How many seconds to wait for initial 4-way handshake to get completed after
  67  * WPS provisioning step or after the re-invocation of a persistent group on a
  68  * P2P Client.
  69  */
  70 #define P2P_MAX_INITIAL_CONN_WAIT 10
  71 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  72
  73 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
  74 /*
  75  * How many seconds to wait for initial 4-way handshake to get completed after
  76  * WPS provisioning step on the GO. This controls the extra time the P2P
  77  * operation is considered to be in progress (e.g., to delay other scans) after
  78  * WPS provisioning has been completed on the GO during group formation.
  79  */
  80 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
  81 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
  82
  83 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
  84 /*
  85  * How many seconds to wait for initial 4-way handshake to get completed after
  86  * re-invocation of a persistent group on the GO when the client is expected
  87  * to connect automatically (no user interaction).
  88  */
  89 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
  90 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
  91
  92 #define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"
  93
  94 /*
  95  * How many seconds to wait to re-attempt to move GOs, in case previous attempt
  96  * was not possible.
  97  */
  98 #define P2P_RECONSIDER_GO_MOVE_DELAY 30
  99
 100 enum p2p_group_removal_reason {
 101         P2P_GROUP_REMOVAL_UNKNOWN,
 102         P2P_GROUP_REMOVAL_SILENT,
 103         P2P_GROUP_REMOVAL_FORMATION_FAILED,
 104         P2P_GROUP_REMOVAL_REQUESTED,
 105         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
 106         P2P_GROUP_REMOVAL_UNAVAILABLE,
 107         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
 108         P2P_GROUP_REMOVAL_PSK_FAILURE,
 109         P2P_GROUP_REMOVAL_FREQ_CONFLICT,
 110         P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL
 111 };
 112
 113
 114 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
 115 static struct wpa_supplicant *
 116 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
 117                          int go);
 118 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
 119                                const u8 *ssid, size_t ssid_len);
 120 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 121                                    const u8 *ssid, size_t ssid_len);
 122 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 123 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 124                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 125                          int auto_join, int freq,
 126                          const u8 *ssid, size_t ssid_len);
 127 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 128 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 129 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 130 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 131 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 132                                              void *timeout_ctx);
 133 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 134 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 135                                        int group_added);
 136 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 137 static void wpas_stop_listen(void *ctx);
 138 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
 139 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
 140 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 141                                         enum wpa_driver_if_type type);
 142 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
 143                                             int already_deleted);
 144 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
 145                                              struct wpa_used_freq_data *freqs,
 146                                              unsigned int num);
 147 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx);
 148 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq);
 149 static void
 150 wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
 151                              struct wpa_used_freq_data *freqs, unsigned int num,
 152                              enum wpas_p2p_channel_update_trig trig);
 153 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx);
 154
 155
 156 /*
 157  * Get the number of concurrent channels that the HW can operate, but that are
 158  * currently not in use by any of the wpa_supplicant interfaces.
 159  */
 160 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 161 {
 162         int *freqs;
 163         int num, unused;
 164
 165         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 166         if (!freqs)
 167                 return -1;
 168
 169         num = get_shared_radio_freqs(wpa_s, freqs,
 170                                      wpa_s->num_multichan_concurrent);
 171         os_free(freqs);
 172
 173         unused = wpa_s->num_multichan_concurrent - num;
 174         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 175         return unused;
 176 }
 177
 178
 179 /*
 180  * Get the frequencies that are currently in use by one or more of the virtual
 181  * interfaces, and that are also valid for P2P operation.
 182  */
 183 static unsigned int
 184 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 185                           struct wpa_used_freq_data *p2p_freqs,
 186                           unsigned int len)
 187 {
 188         struct wpa_used_freq_data *freqs;
 189         unsigned int num, i, j;
 190
 191         freqs = os_calloc(wpa_s->num_multichan_concurrent,
 192                           sizeof(struct wpa_used_freq_data));
 193         if (!freqs)
 194                 return 0;
 195
 196         num = get_shared_radio_freqs_data(wpa_s, freqs,
 197                                           wpa_s->num_multichan_concurrent);
 198
 199         os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
 200
 201         for (i = 0, j = 0; i < num && j < len; i++) {
 202                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
 203                         p2p_freqs[j++] = freqs[i];
 204         }
 205
 206         os_free(freqs);
 207
 208         dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
 209
 210         return j;
 211 }
 212
 213
 214 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 215                                              int freq)
 216 {
 217         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 218                 return;
 219
 220         /* Use the wpa_s used to control the P2P Device operation */
 221         wpa_s = wpa_s->global->p2p_init_wpa_s;
 222
 223         if (wpa_s->conf->p2p_ignore_shared_freq &&
 224             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 225             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 226                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 227                            freq);
 228                 freq = 0;
 229         }
 230         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 231 }
 232
 233
 234 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 235                                       struct wpa_scan_results *scan_res)
 236 {
 237         size_t i;
 238
 239         if (wpa_s->p2p_scan_work) {
 240                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 241                 wpa_s->p2p_scan_work = NULL;
 242                 radio_work_done(work);
 243         }
 244
 245         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 246                 return;
 247
 248         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 249                    (int) scan_res->num);
 250
 251         for (i = 0; i < scan_res->num; i++) {
 252                 struct wpa_scan_res *bss = scan_res->res[i];
 253                 struct os_reltime time_tmp_age, entry_ts;
 254                 const u8 *ies;
 255                 size_t ies_len;
 256
 257                 time_tmp_age.sec = bss->age / 1000;
 258                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 259                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 260
 261                 ies = (const u8 *) (bss + 1);
 262                 ies_len = bss->ie_len;
 263                 if (bss->beacon_ie_len > 0 &&
 264                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 265                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 266                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 267                                    MACSTR, MAC2STR(bss->bssid));
 268                         ies = ies + ies_len;
 269                         ies_len = bss->beacon_ie_len;
 270                 }
 271
 272
 273                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 274                                          bss->freq, &entry_ts, bss->level,
 275                                          ies, ies_len) > 0)
 276                         break;
 277         }
 278
 279         p2p_scan_res_handled(wpa_s->global->p2p);
 280 }
 281
 282
 283 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 284 {
 285         struct wpa_supplicant *wpa_s = work->wpa_s;
 286         struct wpa_driver_scan_params *params = work->ctx;
 287         int ret;
 288
 289         if (deinit) {
 290                 if (!work->started) {
 291                         wpa_scan_free_params(params);
 292                         return;
 293                 }
 294
 295                 wpa_s->p2p_scan_work = NULL;
 296                 return;
 297         }
 298
 299         ret = wpa_drv_scan(wpa_s, params);
 300         wpa_scan_free_params(params);
 301         work->ctx = NULL;
 302         if (ret) {
 303                 radio_work_done(work);
 304                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 305                 return;
 306         }
 307
 308         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 309         os_get_reltime(&wpa_s->scan_trigger_time);
 310         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 311         wpa_s->own_scan_requested = 1;
 312         wpa_s->p2p_scan_work = work;
 313 }
 314
 315
 316 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 317                                           int freq)
 318 {
 319         if (wpa_s->global->p2p_24ghz_social_channels &&
 320             (freq == 2412 || freq == 2437 || freq == 2462)) {
 321                 /*
 322                  * Search all social channels regardless of whether these have
 323                  * been disabled for P2P operating channel use to avoid missing
 324                  * peers.
 325                  */
 326                 return 1;
 327         }
 328         return p2p_supported_freq(wpa_s->global->p2p, freq);
 329 }
 330
 331
 332 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 333                          unsigned int num_req_dev_types,
 334                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 335 {
 336         struct wpa_supplicant *wpa_s = ctx;
 337         struct wpa_driver_scan_params *params = NULL;
 338         struct wpabuf *wps_ie, *ies;
 339         unsigned int num_channels = 0;
 340         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 341         size_t ielen;
 342         u8 *n, i;
 343
 344         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 345                 return -1;
 346
 347         if (wpa_s->p2p_scan_work) {
 348                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 349                 return -1;
 350         }
 351
 352         params = os_zalloc(sizeof(*params));
 353         if (params == NULL)
 354                 return -1;
 355
 356         /* P2P Wildcard SSID */
 357         params->num_ssids = 1;
 358         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 359         if (n == NULL)
 360                 goto fail;
 361         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 362         params->ssids[0].ssid = n;
 363         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 364
 365         wpa_s->wps->dev.p2p = 1;
 366         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 367                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 368                                         num_req_dev_types, req_dev_types);
 369         if (wps_ie == NULL)
 370                 goto fail;
 371
 372         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 373         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 374         if (ies == NULL) {
 375                 wpabuf_free(wps_ie);
 376                 goto fail;
 377         }
 378         wpabuf_put_buf(ies, wps_ie);
 379         wpabuf_free(wps_ie);
 380
 381         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 382
 383         params->p2p_probe = 1;
 384         n = os_malloc(wpabuf_len(ies));
 385         if (n == NULL) {
 386                 wpabuf_free(ies);
 387                 goto fail;
 388         }
 389         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 390         params->extra_ies = n;
 391         params->extra_ies_len = wpabuf_len(ies);
 392         wpabuf_free(ies);
 393
 394         switch (type) {
 395         case P2P_SCAN_SOCIAL:
 396                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 397                                           sizeof(int));
 398                 if (params->freqs == NULL)
 399                         goto fail;
 400                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 401                         if (wpas_p2p_search_social_channel(
 402                                     wpa_s, social_channels_freq[i]))
 403                                 params->freqs[num_channels++] =
 404                                         social_channels_freq[i];
 405                 }
 406                 params->freqs[num_channels++] = 0;
 407                 break;
 408         case P2P_SCAN_FULL:
 409                 break;
 410         case P2P_SCAN_SPECIFIC:
 411                 params->freqs = os_calloc(2, sizeof(int));
 412                 if (params->freqs == NULL)
 413                         goto fail;
 414                 params->freqs[0] = freq;
 415                 params->freqs[1] = 0;
 416                 break;
 417         case P2P_SCAN_SOCIAL_PLUS_ONE:
 418                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 419                                           sizeof(int));
 420                 if (params->freqs == NULL)
 421                         goto fail;
 422                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 423                         if (wpas_p2p_search_social_channel(
 424                                     wpa_s, social_channels_freq[i]))
 425                                 params->freqs[num_channels++] =
 426                                         social_channels_freq[i];
 427                 }
 428                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 429                         params->freqs[num_channels++] = freq;
 430                 params->freqs[num_channels++] = 0;
 431                 break;
 432         }
 433
 434         radio_remove_works(wpa_s, "p2p-scan", 0);
 435         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 436                            params) < 0)
 437                 goto fail;
 438         return 0;
 439
 440 fail:
 441         wpa_scan_free_params(params);
 442         return -1;
 443 }
 444
 445
 446 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 447 {
 448         switch (p2p_group_interface) {
 449         case P2P_GROUP_INTERFACE_PENDING:
 450                 return WPA_IF_P2P_GROUP;
 451         case P2P_GROUP_INTERFACE_GO:
 452                 return WPA_IF_P2P_GO;
 453         case P2P_GROUP_INTERFACE_CLIENT:
 454                 return WPA_IF_P2P_CLIENT;
 455         }
 456
 457         return WPA_IF_P2P_GROUP;
 458 }
 459
 460
 461 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 462                                                   const u8 *ssid,
 463                                                   size_t ssid_len, int *go)
 464 {
 465         struct wpa_ssid *s;
 466
 467         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 468                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 469                         if (s->disabled != 0 || !s->p2p_group ||
 470                             s->ssid_len != ssid_len ||
 471                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 472                                 continue;
 473                         if (s->mode == WPAS_MODE_P2P_GO &&
 474                             s != wpa_s->current_ssid)
 475                                 continue;
 476                         if (go)
 477                                 *go = s->mode == WPAS_MODE_P2P_GO;
 478                         return wpa_s;
 479                 }
 480         }
 481
 482         return NULL;
 483 }
 484
 485
 486 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 487 {
 488         struct wpa_supplicant *wpa_s = eloop_ctx;
 489         wpa_printf(MSG_DEBUG,
 490                    "P2P: Complete previously requested removal of %s",
 491                    wpa_s->ifname);
 492         wpas_p2p_disconnect(wpa_s);
 493 }
 494
 495
 496 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 497                                       struct wpa_supplicant *calling_wpa_s)
 498 {
 499         if (calling_wpa_s == wpa_s && wpa_s &&
 500             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 501                 /*
 502                  * The calling wpa_s instance is going to be removed. Do that
 503                  * from an eloop callback to keep the instance available until
 504                  * the caller has returned. This my be needed, e.g., to provide
 505                  * control interface responses on the per-interface socket.
 506                  */
 507                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 508                                            wpa_s, NULL) < 0)
 509                         return -1;
 510                 return 0;
 511         }
 512
 513         return wpas_p2p_disconnect(wpa_s);
 514 }
 515
 516
 517 /* Determine total number of clients in active groups where we are the GO */
 518 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 519 {
 520         unsigned int count = 0;
 521         struct wpa_ssid *s;
 522
 523         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 524                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 525                         wpa_printf(MSG_DEBUG,
 526                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 527                                    wpa_s, s, s->disabled, s->p2p_group,
 528                                    s->mode);
 529                         if (!s->disabled && s->p2p_group &&
 530                             s->mode == WPAS_MODE_P2P_GO) {
 531                                 count += p2p_get_group_num_members(
 532                                         wpa_s->p2p_group);
 533                         }
 534                 }
 535         }
 536
 537         return count;
 538 }
 539
 540
 541 /* Find an interface for a P2P group where we are the GO */
 542 static struct wpa_supplicant *
 543 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 544 {
 545         struct wpa_supplicant *save = NULL;
 546         struct wpa_ssid *s;
 547
 548         if (!wpa_s)
 549                 return NULL;
 550
 551         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 552                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 553                         if (s->disabled || !s->p2p_group ||
 554                             s->mode != WPAS_MODE_P2P_GO)
 555                                 continue;
 556
 557                         /* Prefer a group with connected clients */
 558                         if (p2p_get_group_num_members(wpa_s->p2p_group))
 559                                 return wpa_s;
 560                         save = wpa_s;
 561                 }
 562         }
 563
 564         /* No group with connected clients, so pick the one without (if any) */
 565         return save;
 566 }
 567
 568
 569 /* Find an active P2P group where we are the GO */
 570 static struct wpa_ssid * wpas_p2p_group_go_ssid(struct wpa_supplicant *wpa_s,
 571                                                 u8 *bssid)
 572 {
 573         struct wpa_ssid *s, *empty = NULL;
 574
 575         if (!wpa_s)
 576                 return 0;
 577
 578         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 579                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 580                         if (s->disabled || !s->p2p_group ||
 581                             s->mode != WPAS_MODE_P2P_GO)
 582                                 continue;
 583
 584                         os_memcpy(bssid, wpa_s->own_addr, ETH_ALEN);
 585                         if (p2p_get_group_num_members(wpa_s->p2p_group))
 586                                 return s;
 587                         empty = s;
 588                 }
 589         }
 590
 591         return empty;
 592 }
 593
 594
 595 /* Find a persistent group where we are the GO */
 596 static struct wpa_ssid *
 597 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
 598 {
 599         struct wpa_ssid *s;
 600
 601         for (s = wpa_s->conf->ssid; s; s = s->next) {
 602                 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
 603                         return s;
 604         }
 605
 606         return NULL;
 607 }
 608
 609
 610 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role)
 611 {
 612         struct wpa_supplicant *wpa_s = ctx, *tmp_wpa_s;
 613         struct wpa_ssid *s;
 614         u8 conncap = P2PS_SETUP_NONE;
 615         unsigned int owned_members = 0;
 616         unsigned int owner = 0;
 617         unsigned int client = 0;
 618         struct wpa_supplicant *go_wpa_s;
 619         struct wpa_ssid *persistent_go;
 620         int p2p_no_group_iface;
 621
 622         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 623
 624         /*
 625          * For non-concurrent capable devices:
 626          * If persistent_go, then no new.
 627          * If GO, then no client.
 628          * If client, then no GO.
 629          */
 630         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 631         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 632         p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s);
 633
 634         wpa_printf(MSG_DEBUG, "P2P: GO(iface)=%p persistent(ssid)=%p",
 635                    go_wpa_s, persistent_go);
 636
 637         for (tmp_wpa_s = wpa_s->global->ifaces; tmp_wpa_s;
 638              tmp_wpa_s = tmp_wpa_s->next) {
 639                 for (s = tmp_wpa_s->conf->ssid; s; s = s->next) {
 640                         wpa_printf(MSG_DEBUG,
 641                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 642                                    tmp_wpa_s, s, s->disabled,
 643                                    s->p2p_group, s->mode);
 644                         if (!s->disabled && s->p2p_group) {
 645                                 if (s->mode == WPAS_MODE_P2P_GO) {
 646                                         owned_members +=
 647                                                 p2p_get_group_num_members(
 648                                                         tmp_wpa_s->p2p_group);
 649                                         owner++;
 650                                 } else
 651                                         client++;
 652                         }
 653                 }
 654         }
 655
 656         /* If not concurrent, restrict our choices */
 657         if (p2p_no_group_iface) {
 658                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 659
 660                 if (client)
 661                         return P2PS_SETUP_NONE;
 662
 663                 if (go_wpa_s) {
 664                         if (role == P2PS_SETUP_CLIENT ||
 665                             incoming == P2PS_SETUP_GROUP_OWNER ||
 666                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 667                                 return P2PS_SETUP_NONE;
 668
 669                         return P2PS_SETUP_GROUP_OWNER;
 670                 }
 671
 672                 if (persistent_go) {
 673                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 674                                 if (!incoming)
 675                                         return P2PS_SETUP_GROUP_OWNER |
 676                                                 P2PS_SETUP_CLIENT;
 677                                 if (incoming == P2PS_SETUP_NEW) {
 678                                         u8 r;
 679
 680                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 681                                             (r & 1))
 682                                                 return P2PS_SETUP_CLIENT;
 683                                         return P2PS_SETUP_GROUP_OWNER;
 684                                 }
 685                         }
 686                 }
 687         }
 688
 689         /* If a required role has been specified, handle it here */
 690         if (role && role != P2PS_SETUP_NEW) {
 691                 switch (incoming) {
 692                 case P2PS_SETUP_NONE:
 693                 case P2PS_SETUP_NEW:
 694                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 695                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 696                         conncap = role;
 697                         goto grp_owner;
 698
 699                 case P2PS_SETUP_GROUP_OWNER:
 700                         /*
 701                          * Must be a complimentary role - cannot be a client to
 702                          * more than one peer.
 703                          */
 704                         if (incoming == role || client)
 705                                 return P2PS_SETUP_NONE;
 706
 707                         return P2PS_SETUP_CLIENT;
 708
 709                 case P2PS_SETUP_CLIENT:
 710                         /* Must be a complimentary role */
 711                         if (incoming != role) {
 712                                 conncap = P2PS_SETUP_GROUP_OWNER;
 713                                 goto grp_owner;
 714                         }
 715
 716                 default:
 717                         return P2PS_SETUP_NONE;
 718                 }
 719         }
 720
 721         /*
 722          * For now, we only will support ownership of one group, and being a
 723          * client of one group. Therefore, if we have either an existing GO
 724          * group, or an existing client group, we will not do a new GO
 725          * negotiation, but rather try to re-use the existing groups.
 726          */
 727         switch (incoming) {
 728         case P2PS_SETUP_NONE:
 729         case P2PS_SETUP_NEW:
 730                 if (client)
 731                         conncap = P2PS_SETUP_GROUP_OWNER;
 732                 else if (!owned_members)
 733                         conncap = P2PS_SETUP_NEW;
 734                 else if (incoming == P2PS_SETUP_NONE)
 735                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 736                 else
 737                         conncap = P2PS_SETUP_CLIENT;
 738                 break;
 739
 740         case P2PS_SETUP_CLIENT:
 741                 conncap = P2PS_SETUP_GROUP_OWNER;
 742                 break;
 743
 744         case P2PS_SETUP_GROUP_OWNER:
 745                 if (!client)
 746                         conncap = P2PS_SETUP_CLIENT;
 747                 break;
 748
 749         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 750         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 751                 if (client)
 752                         conncap = P2PS_SETUP_GROUP_OWNER;
 753                 else {
 754                         u8 r;
 755
 756                         if (os_get_random(&r, sizeof(r)) < 0 ||
 757                             (r & 1))
 758                                 conncap = P2PS_SETUP_CLIENT;
 759                         else
 760                                 conncap = P2PS_SETUP_GROUP_OWNER;
 761                 }
 762                 break;
 763
 764         default:
 765                 return P2PS_SETUP_NONE;
 766         }
 767
 768 grp_owner:
 769         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 770             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 771                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 772                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 773                 wpa_printf(MSG_DEBUG, "P2P: GOs:%d members:%d conncap:%d",
 774                            owner, owned_members, conncap);
 775
 776                 s = wpas_p2p_get_persistent_go(wpa_s);
 777
 778                 if (!s && !owner && p2p_no_group_iface) {
 779                         p2p_set_intended_addr(wpa_s->global->p2p,
 780                                               wpa_s->own_addr);
 781                 } else if (!s && !owner) {
 782                         if (wpas_p2p_add_group_interface(wpa_s,
 783                                                          WPA_IF_P2P_GO) < 0) {
 784                                 wpa_printf(MSG_ERROR,
 785                                            "P2P: Failed to allocate a new interface for the group");
 786                                 return P2PS_SETUP_NONE;
 787                         }
 788                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 789                         p2p_set_intended_addr(wpa_s->global->p2p,
 790                                               wpa_s->pending_interface_addr);
 791                 }
 792         }
 793
 794         return conncap;
 795 }
 796
 797
 798 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 799                                  enum p2p_group_removal_reason removal_reason)
 800 {
 801         struct wpa_ssid *ssid;
 802         char *gtype;
 803         const char *reason;
 804
 805         ssid = wpa_s->current_ssid;
 806         if (ssid == NULL) {
 807                 /*
 808                  * The current SSID was not known, but there may still be a
 809                  * pending P2P group interface waiting for provisioning or a
 810                  * P2P group that is trying to reconnect.
 811                  */
 812                 ssid = wpa_s->conf->ssid;
 813                 while (ssid) {
 814                         if (ssid->p2p_group && ssid->disabled != 2)
 815                                 break;
 816                         ssid = ssid->next;
 817                 }
 818                 if (ssid == NULL &&
 819                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 820                 {
 821                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 822                                    "not found");
 823                         return -1;
 824                 }
 825         }
 826         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 827                 gtype = "GO";
 828         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 829                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 830                 wpa_s->reassociate = 0;
 831                 wpa_s->disconnected = 1;
 832                 gtype = "client";
 833         } else
 834                 gtype = "GO";
 835
 836         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 837                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 838
 839         if (os_strcmp(gtype, "client") == 0) {
 840                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 841                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 842                                                 wpa_s, NULL)) {
 843                         wpa_printf(MSG_DEBUG,
 844                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 845                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 846                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 847                                              wpa_s, NULL);
 848                 }
 849         }
 850
 851         if (wpa_s->cross_connect_in_use) {
 852                 wpa_s->cross_connect_in_use = 0;
 853                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 854                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 855                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 856         }
 857         switch (removal_reason) {
 858         case P2P_GROUP_REMOVAL_REQUESTED:
 859                 reason = " reason=REQUESTED";
 860                 break;
 861         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 862                 reason = " reason=FORMATION_FAILED";
 863                 break;
 864         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 865                 reason = " reason=IDLE";
 866                 break;
 867         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 868                 reason = " reason=UNAVAILABLE";
 869                 break;
 870         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 871                 reason = " reason=GO_ENDING_SESSION";
 872                 break;
 873         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 874                 reason = " reason=PSK_FAILURE";
 875                 break;
 876         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 877                 reason = " reason=FREQ_CONFLICT";
 878                 break;
 879         default:
 880                 reason = "";
 881                 break;
 882         }
 883         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 884                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 885                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 886                                wpa_s->ifname, gtype, reason);
 887         }
 888
 889         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 890                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 891         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 892                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 893         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 894                                  wpa_s->parent, NULL) > 0) {
 895                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 896                            "timeout");
 897                 wpa_s->p2p_in_provisioning = 0;
 898                 wpas_p2p_group_formation_failed(wpa_s, 1);
 899         }
 900
 901         wpa_s->p2p_in_invitation = 0;
 902         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
 903         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
 904
 905         /*
 906          * Make sure wait for the first client does not remain active after the
 907          * group has been removed.
 908          */
 909         wpa_s->global->p2p_go_wait_client.sec = 0;
 910
 911         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 912                 struct wpa_global *global;
 913                 char *ifname;
 914                 enum wpa_driver_if_type type;
 915                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 916                         wpa_s->ifname);
 917                 global = wpa_s->global;
 918                 ifname = os_strdup(wpa_s->ifname);
 919                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 920                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 921                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 922                 wpa_s = global->ifaces;
 923                 if (wpa_s && ifname)
 924                         wpa_drv_if_remove(wpa_s, type, ifname);
 925                 os_free(ifname);
 926                 return 1;
 927         }
 928
 929         if (!wpa_s->p2p_go_group_formation_completed) {
 930                 wpa_s->global->p2p_group_formation = NULL;
 931                 wpa_s->p2p_in_provisioning = 0;
 932         }
 933
 934         wpa_s->show_group_started = 0;
 935         os_free(wpa_s->go_params);
 936         wpa_s->go_params = NULL;
 937
 938         os_free(wpa_s->p2p_group_common_freqs);
 939         wpa_s->p2p_group_common_freqs = NULL;
 940         wpa_s->p2p_group_common_freqs_num = 0;
 941
 942         wpa_s->waiting_presence_resp = 0;
 943
 944         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 945         if (ssid && (ssid->p2p_group ||
 946                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 947                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 948                 int id = ssid->id;
 949                 if (ssid == wpa_s->current_ssid) {
 950                         wpa_sm_set_config(wpa_s->wpa, NULL);
 951                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 952                         wpa_s->current_ssid = NULL;
 953                 }
 954                 /*
 955                  * Networks objects created during any P2P activities are not
 956                  * exposed out as they might/will confuse certain non-P2P aware
 957                  * applications since these network objects won't behave like
 958                  * regular ones.
 959                  *
 960                  * Likewise, we don't send out network removed signals for such
 961                  * network objects.
 962                  */
 963                 wpa_config_remove_network(wpa_s->conf, id);
 964                 wpa_supplicant_clear_status(wpa_s);
 965                 wpa_supplicant_cancel_sched_scan(wpa_s);
 966         } else {
 967                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 968                            "found");
 969         }
 970         if (wpa_s->ap_iface)
 971                 wpa_supplicant_ap_deinit(wpa_s);
 972         else
 973                 wpa_drv_deinit_p2p_cli(wpa_s);
 974
 975         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 976
 977         return 0;
 978 }
 979
 980
 981 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 982                                      u8 *go_dev_addr,
 983                                      const u8 *ssid, size_t ssid_len)
 984 {
 985         struct wpa_bss *bss;
 986         const u8 *bssid;
 987         struct wpabuf *p2p;
 988         u8 group_capab;
 989         const u8 *addr;
 990
 991         if (wpa_s->go_params)
 992                 bssid = wpa_s->go_params->peer_interface_addr;
 993         else
 994                 bssid = wpa_s->bssid;
 995
 996         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 997         if (bss == NULL && wpa_s->go_params &&
 998             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
 999                 bss = wpa_bss_get_p2p_dev_addr(
1000                         wpa_s, wpa_s->go_params->peer_device_addr);
1001         if (bss == NULL) {
1002                 u8 iface_addr[ETH_ALEN];
1003                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1004                                            iface_addr) == 0)
1005                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1006         }
1007         if (bss == NULL) {
1008                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1009                            "group is persistent - BSS " MACSTR " not found",
1010                            MAC2STR(bssid));
1011                 return 0;
1012         }
1013
1014         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1015         if (p2p == NULL)
1016                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1017                                                          P2P_IE_VENDOR_TYPE);
1018         if (p2p == NULL) {
1019                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1020                            "group is persistent - BSS " MACSTR
1021                            " did not include P2P IE", MAC2STR(bssid));
1022                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1023                             (u8 *) (bss + 1), bss->ie_len);
1024                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1025                             ((u8 *) bss + 1) + bss->ie_len,
1026                             bss->beacon_ie_len);
1027                 return 0;
1028         }
1029
1030         group_capab = p2p_get_group_capab(p2p);
1031         addr = p2p_get_go_dev_addr(p2p);
1032         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1033                    "group_capab=0x%x", group_capab);
1034         if (addr) {
1035                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1036                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1037                            MAC2STR(addr));
1038         } else
1039                 os_memset(go_dev_addr, 0, ETH_ALEN);
1040         wpabuf_free(p2p);
1041
1042         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1043                    "go_dev_addr=" MACSTR,
1044                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1045
1046         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1047 }
1048
1049
1050 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1051                                            struct wpa_ssid *ssid,
1052                                            const u8 *go_dev_addr)
1053 {
1054         struct wpa_ssid *s;
1055         int changed = 0;
1056
1057         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1058                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1059         for (s = wpa_s->conf->ssid; s; s = s->next) {
1060                 if (s->disabled == 2 &&
1061                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1062                     s->ssid_len == ssid->ssid_len &&
1063                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1064                         break;
1065         }
1066
1067         if (s) {
1068                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1069                            "entry");
1070                 if (ssid->passphrase && !s->passphrase)
1071                         changed = 1;
1072                 else if (ssid->passphrase && s->passphrase &&
1073                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1074                         changed = 1;
1075         } else {
1076                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1077                            "entry");
1078                 changed = 1;
1079                 s = wpa_config_add_network(wpa_s->conf);
1080                 if (s == NULL)
1081                         return -1;
1082
1083                 /*
1084                  * Instead of network_added we emit persistent_group_added
1085                  * notification. Also to keep the defense checks in
1086                  * persistent_group obj registration method, we set the
1087                  * relevant flags in s to designate it as a persistent group.
1088                  */
1089                 s->p2p_group = 1;
1090                 s->p2p_persistent_group = 1;
1091                 wpas_notify_persistent_group_added(wpa_s, s);
1092                 wpa_config_set_network_defaults(s);
1093         }
1094
1095         s->p2p_group = 1;
1096         s->p2p_persistent_group = 1;
1097         s->disabled = 2;
1098         s->bssid_set = 1;
1099         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1100         s->mode = ssid->mode;
1101         s->auth_alg = WPA_AUTH_ALG_OPEN;
1102         s->key_mgmt = WPA_KEY_MGMT_PSK;
1103         s->proto = WPA_PROTO_RSN;
1104         s->pairwise_cipher = WPA_CIPHER_CCMP;
1105         s->export_keys = 1;
1106         if (ssid->passphrase) {
1107                 os_free(s->passphrase);
1108                 s->passphrase = os_strdup(ssid->passphrase);
1109         }
1110         if (ssid->psk_set) {
1111                 s->psk_set = 1;
1112                 os_memcpy(s->psk, ssid->psk, 32);
1113         }
1114         if (s->passphrase && !s->psk_set)
1115                 wpa_config_update_psk(s);
1116         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1117                 os_free(s->ssid);
1118                 s->ssid = os_malloc(ssid->ssid_len);
1119         }
1120         if (s->ssid) {
1121                 s->ssid_len = ssid->ssid_len;
1122                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1123         }
1124         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1125                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1126                 wpa_s->global->add_psk = NULL;
1127                 changed = 1;
1128         }
1129
1130         if (changed && wpa_s->conf->update_config &&
1131             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1132                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1133         }
1134
1135         return s->id;
1136 }
1137
1138
1139 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1140                                                  const u8 *addr)
1141 {
1142         struct wpa_ssid *ssid, *s;
1143         u8 *n;
1144         size_t i;
1145         int found = 0;
1146         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1147
1148         ssid = wpa_s->current_ssid;
1149         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1150             !ssid->p2p_persistent_group)
1151                 return;
1152
1153         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1154                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1155                         continue;
1156
1157                 if (s->ssid_len == ssid->ssid_len &&
1158                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1159                         break;
1160         }
1161
1162         if (s == NULL)
1163                 return;
1164
1165         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1166                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1167                               ETH_ALEN) != 0)
1168                         continue;
1169
1170                 if (i == s->num_p2p_clients - 1)
1171                         return; /* already the most recent entry */
1172
1173                 /* move the entry to mark it most recent */
1174                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1175                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1176                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1177                 os_memcpy(s->p2p_client_list +
1178                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1179                           ETH_ALEN);
1180                 os_memset(s->p2p_client_list +
1181                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1182                           0xff, ETH_ALEN);
1183                 found = 1;
1184                 break;
1185         }
1186
1187         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1188                 n = os_realloc_array(s->p2p_client_list,
1189                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1190                 if (n == NULL)
1191                         return;
1192                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1193                           ETH_ALEN);
1194                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1195                           0xff, ETH_ALEN);
1196                 s->p2p_client_list = n;
1197                 s->num_p2p_clients++;
1198         } else if (!found && s->p2p_client_list) {
1199                 /* Not enough room for an additional entry - drop the oldest
1200                  * entry */
1201                 os_memmove(s->p2p_client_list,
1202                            s->p2p_client_list + 2 * ETH_ALEN,
1203                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1204                 os_memcpy(s->p2p_client_list +
1205                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1206                           addr, ETH_ALEN);
1207                 os_memset(s->p2p_client_list +
1208                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1209                           0xff, ETH_ALEN);
1210         }
1211
1212         if (p2p_wpa_s->conf->update_config &&
1213             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1214                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1215 }
1216
1217
1218 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1219                                    int go, struct wpa_ssid *ssid, int freq,
1220                                    const u8 *psk, const char *passphrase,
1221                                    const u8 *go_dev_addr, int persistent,
1222                                    const char *extra)
1223 {
1224         const char *ssid_txt;
1225         char psk_txt[65];
1226
1227         if (psk)
1228                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1229         else
1230                 psk_txt[0] = '\0';
1231
1232         if (ssid)
1233                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1234         else
1235                 ssid_txt = "";
1236
1237         if (passphrase && passphrase[0] == '\0')
1238                 passphrase = NULL;
1239
1240         /*
1241          * Include PSK/passphrase only in the control interface message and
1242          * leave it out from the debug log entry.
1243          */
1244         wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
1245                             P2P_EVENT_GROUP_STARTED
1246                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1247                             MACSTR "%s%s",
1248                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1249                             psk ? " psk=" : "", psk_txt,
1250                             passphrase ? " passphrase=\"" : "",
1251                             passphrase ? passphrase : "",
1252                             passphrase ? "\"" : "",
1253                             MAC2STR(go_dev_addr),
1254                             persistent ? " [PERSISTENT]" : "", extra);
1255         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1256                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1257                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1258                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1259                    extra);
1260 }
1261
1262
1263 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1264                                            int success, int already_deleted)
1265 {
1266         struct wpa_ssid *ssid;
1267         int client;
1268         int persistent;
1269         u8 go_dev_addr[ETH_ALEN];
1270         int network_id = -1;
1271
1272         /*
1273          * This callback is likely called for the main interface. Update wpa_s
1274          * to use the group interface if a new interface was created for the
1275          * group.
1276          */
1277         if (wpa_s->global->p2p_group_formation)
1278                 wpa_s = wpa_s->global->p2p_group_formation;
1279         if (wpa_s->p2p_go_group_formation_completed) {
1280                 wpa_s->global->p2p_group_formation = NULL;
1281                 wpa_s->p2p_in_provisioning = 0;
1282         }
1283         wpa_s->p2p_in_invitation = 0;
1284         wpa_s->group_formation_reported = 1;
1285
1286         if (!success) {
1287                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1288                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1289                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1290                 if (already_deleted)
1291                         return;
1292                 wpas_p2p_group_delete(wpa_s,
1293                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1294                 return;
1295         }
1296
1297         wpa_msg_global(wpa_s->parent, MSG_INFO,
1298                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1299
1300         ssid = wpa_s->current_ssid;
1301         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1302                 ssid->mode = WPAS_MODE_P2P_GO;
1303                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1304                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1305         }
1306
1307         persistent = 0;
1308         if (ssid) {
1309                 client = ssid->mode == WPAS_MODE_INFRA;
1310                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1311                         persistent = ssid->p2p_persistent_group;
1312                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1313                                   ETH_ALEN);
1314                 } else
1315                         persistent = wpas_p2p_persistent_group(wpa_s,
1316                                                                go_dev_addr,
1317                                                                ssid->ssid,
1318                                                                ssid->ssid_len);
1319         } else {
1320                 client = wpa_s->p2p_group_interface ==
1321                         P2P_GROUP_INTERFACE_CLIENT;
1322                 os_memset(go_dev_addr, 0, ETH_ALEN);
1323         }
1324
1325         wpa_s->show_group_started = 0;
1326         if (client) {
1327                 /*
1328                  * Indicate event only after successfully completed 4-way
1329                  * handshake, i.e., when the interface is ready for data
1330                  * packets.
1331                  */
1332                 wpa_s->show_group_started = 1;
1333         } else {
1334                 wpas_p2p_group_started(wpa_s, 1, ssid,
1335                                        ssid ? ssid->frequency : 0,
1336                                        ssid && ssid->passphrase == NULL &&
1337                                        ssid->psk_set ? ssid->psk : NULL,
1338                                        ssid ? ssid->passphrase : NULL,
1339                                        go_dev_addr, persistent, "");
1340                 wpas_p2p_cross_connect_setup(wpa_s);
1341                 wpas_p2p_set_group_idle_timeout(wpa_s);
1342         }
1343
1344         if (persistent)
1345                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
1346                                                              ssid, go_dev_addr);
1347         else {
1348                 os_free(wpa_s->global->add_psk);
1349                 wpa_s->global->add_psk = NULL;
1350         }
1351         if (network_id < 0 && ssid)
1352                 network_id = ssid->id;
1353         if (!client) {
1354                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1355                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1356         }
1357 }
1358
1359
1360 struct send_action_work {
1361         unsigned int freq;
1362         u8 dst[ETH_ALEN];
1363         u8 src[ETH_ALEN];
1364         u8 bssid[ETH_ALEN];
1365         size_t len;
1366         unsigned int wait_time;
1367         u8 buf[0];
1368 };
1369
1370
1371 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1372                                               void *timeout_ctx)
1373 {
1374         struct wpa_supplicant *wpa_s = eloop_ctx;
1375
1376         if (!wpa_s->p2p_send_action_work)
1377                 return;
1378
1379         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1380         os_free(wpa_s->p2p_send_action_work->ctx);
1381         radio_work_done(wpa_s->p2p_send_action_work);
1382         wpa_s->p2p_send_action_work = NULL;
1383 }
1384
1385
1386 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1387 {
1388         if (wpa_s->p2p_send_action_work) {
1389                 struct send_action_work *awork;
1390                 awork = wpa_s->p2p_send_action_work->ctx;
1391                 if (awork->wait_time == 0) {
1392                         os_free(awork);
1393                         radio_work_done(wpa_s->p2p_send_action_work);
1394                         wpa_s->p2p_send_action_work = NULL;
1395                 } else {
1396                         /*
1397                          * In theory, this should not be needed, but number of
1398                          * places in the P2P code is still using non-zero wait
1399                          * time for the last Action frame in the sequence and
1400                          * some of these do not call send_action_done().
1401                          */
1402                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1403                                              wpa_s, NULL);
1404                         eloop_register_timeout(
1405                                 0, awork->wait_time * 1000,
1406                                 wpas_p2p_send_action_work_timeout,
1407                                 wpa_s, NULL);
1408                 }
1409         }
1410 }
1411
1412
1413 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1414                                            unsigned int freq,
1415                                            const u8 *dst, const u8 *src,
1416                                            const u8 *bssid,
1417                                            const u8 *data, size_t data_len,
1418                                            enum offchannel_send_action_result
1419                                            result)
1420 {
1421         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1422
1423         wpas_p2p_action_tx_clear(wpa_s);
1424
1425         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1426                 return;
1427
1428         switch (result) {
1429         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1430                 res = P2P_SEND_ACTION_SUCCESS;
1431                 break;
1432         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1433                 res = P2P_SEND_ACTION_NO_ACK;
1434                 break;
1435         case OFFCHANNEL_SEND_ACTION_FAILED:
1436                 res = P2P_SEND_ACTION_FAILED;
1437                 break;
1438         }
1439
1440         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1441
1442         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1443             wpa_s->pending_pd_before_join &&
1444             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1445              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1446             wpa_s->p2p_fallback_to_go_neg) {
1447                 wpa_s->pending_pd_before_join = 0;
1448                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1449                         "during p2p_connect-auto");
1450                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1451                                P2P_EVENT_FALLBACK_TO_GO_NEG
1452                                "reason=no-ACK-to-PD-Req");
1453                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1454                 return;
1455         }
1456 }
1457
1458
1459 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1460 {
1461         struct wpa_supplicant *wpa_s = work->wpa_s;
1462         struct send_action_work *awork = work->ctx;
1463
1464         if (deinit) {
1465                 if (work->started) {
1466                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1467                                              wpa_s, NULL);
1468                         wpa_s->p2p_send_action_work = NULL;
1469                         offchannel_send_action_done(wpa_s);
1470                 }
1471                 os_free(awork);
1472                 return;
1473         }
1474
1475         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1476                                    awork->bssid, awork->buf, awork->len,
1477                                    awork->wait_time,
1478                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1479                 os_free(awork);
1480                 radio_work_done(work);
1481                 return;
1482         }
1483         wpa_s->p2p_send_action_work = work;
1484 }
1485
1486
1487 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1488                                  unsigned int freq, const u8 *dst,
1489                                  const u8 *src, const u8 *bssid, const u8 *buf,
1490                                  size_t len, unsigned int wait_time)
1491 {
1492         struct send_action_work *awork;
1493
1494         if (wpa_s->p2p_send_action_work) {
1495                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1496                 return -1;
1497         }
1498
1499         awork = os_zalloc(sizeof(*awork) + len);
1500         if (awork == NULL)
1501                 return -1;
1502
1503         awork->freq = freq;
1504         os_memcpy(awork->dst, dst, ETH_ALEN);
1505         os_memcpy(awork->src, src, ETH_ALEN);
1506         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1507         awork->len = len;
1508         awork->wait_time = wait_time;
1509         os_memcpy(awork->buf, buf, len);
1510
1511         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1512                            wpas_send_action_cb, awork) < 0) {
1513                 os_free(awork);
1514                 return -1;
1515         }
1516
1517         return 0;
1518 }
1519
1520
1521 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1522                             const u8 *src, const u8 *bssid, const u8 *buf,
1523                             size_t len, unsigned int wait_time)
1524 {
1525         struct wpa_supplicant *wpa_s = ctx;
1526         int listen_freq = -1, send_freq = -1;
1527
1528         if (wpa_s->p2p_listen_work)
1529                 listen_freq = wpa_s->p2p_listen_work->freq;
1530         if (wpa_s->p2p_send_action_work)
1531                 send_freq = wpa_s->p2p_send_action_work->freq;
1532         if (listen_freq != (int) freq && send_freq != (int) freq) {
1533                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1534                            listen_freq, send_freq);
1535                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1536                                              len, wait_time);
1537         }
1538
1539         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1540         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1541                                       wait_time,
1542                                       wpas_p2p_send_action_tx_status, 1);
1543 }
1544
1545
1546 static void wpas_send_action_done(void *ctx)
1547 {
1548         struct wpa_supplicant *wpa_s = ctx;
1549
1550         if (wpa_s->p2p_send_action_work) {
1551                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1552                                      wpa_s, NULL);
1553                 os_free(wpa_s->p2p_send_action_work->ctx);
1554                 radio_work_done(wpa_s->p2p_send_action_work);
1555                 wpa_s->p2p_send_action_work = NULL;
1556         }
1557
1558         offchannel_send_action_done(wpa_s);
1559 }
1560
1561
1562 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1563                                     struct p2p_go_neg_results *params)
1564 {
1565         if (wpa_s->go_params == NULL) {
1566                 wpa_s->go_params = os_malloc(sizeof(*params));
1567                 if (wpa_s->go_params == NULL)
1568                         return -1;
1569         }
1570         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1571         return 0;
1572 }
1573
1574
1575 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1576                                     struct p2p_go_neg_results *res)
1577 {
1578         wpa_s->group_formation_reported = 0;
1579         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1580                    " dev_addr " MACSTR " wps_method %d",
1581                    MAC2STR(res->peer_interface_addr),
1582                    MAC2STR(res->peer_device_addr), res->wps_method);
1583         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1584                           res->ssid, res->ssid_len);
1585         wpa_supplicant_ap_deinit(wpa_s);
1586         wpas_copy_go_neg_results(wpa_s, res);
1587         if (res->wps_method == WPS_PBC) {
1588                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1589 #ifdef CONFIG_WPS_NFC
1590         } else if (res->wps_method == WPS_NFC) {
1591                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1592                                    res->peer_interface_addr,
1593                                    wpa_s->parent->p2p_oob_dev_pw,
1594                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1595                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1596                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1597                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1598                                    NULL,
1599                                    NULL, 0, 0);
1600 #endif /* CONFIG_WPS_NFC */
1601         } else {
1602                 u16 dev_pw_id = DEV_PW_DEFAULT;
1603                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1604                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1605                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1606                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1607                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1608                                    wpa_s->p2p_pin, 1, dev_pw_id);
1609         }
1610 }
1611
1612
1613 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1614                                   struct wpa_ssid *ssid)
1615 {
1616         struct wpa_ssid *persistent;
1617         struct psk_list_entry *psk;
1618         struct hostapd_data *hapd;
1619
1620         if (!wpa_s->ap_iface)
1621                 return;
1622
1623         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1624                                              ssid->ssid_len);
1625         if (persistent == NULL)
1626                 return;
1627
1628         hapd = wpa_s->ap_iface->bss[0];
1629
1630         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1631                          list) {
1632                 struct hostapd_wpa_psk *hpsk;
1633
1634                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1635                         MACSTR " psk=%d",
1636                         MAC2STR(psk->addr), psk->p2p);
1637                 hpsk = os_zalloc(sizeof(*hpsk));
1638                 if (hpsk == NULL)
1639                         break;
1640                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1641                 if (psk->p2p)
1642                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1643                 else
1644                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1645                 hpsk->next = hapd->conf->ssid.wpa_psk;
1646                 hapd->conf->ssid.wpa_psk = hpsk;
1647         }
1648 }
1649
1650
1651 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1652 {
1653         unsigned int i;
1654
1655         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1656                 wpa_s->p2p_group_common_freqs_num);
1657
1658         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1659                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1660                         i, wpa_s->p2p_group_common_freqs[i]);
1661 }
1662
1663
1664 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1665                                            struct p2p_go_neg_results *params)
1666 {
1667         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1668
1669         wpa_s->p2p_group_common_freqs_num = 0;
1670         os_free(wpa_s->p2p_group_common_freqs);
1671         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1672         if (!wpa_s->p2p_group_common_freqs)
1673                 return;
1674
1675         for (i = 0; i < len; i++) {
1676                 if (!wpa_s->go_params->freq_list[i])
1677                         break;
1678                 wpa_s->p2p_group_common_freqs[i] =
1679                         wpa_s->go_params->freq_list[i];
1680         }
1681         wpa_s->p2p_group_common_freqs_num = i;
1682 }
1683
1684
1685 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1686 {
1687 #ifndef CONFIG_NO_CONFIG_WRITE
1688         if (wpa_s->parent->conf->update_config &&
1689             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1690                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1691 #endif /* CONFIG_NO_CONFIG_WRITE */
1692 }
1693
1694
1695 static void p2p_go_configured(void *ctx, void *data)
1696 {
1697         struct wpa_supplicant *wpa_s = ctx;
1698         struct p2p_go_neg_results *params = data;
1699         struct wpa_ssid *ssid;
1700         int network_id = -1;
1701
1702         p2p_go_save_group_common_freqs(wpa_s, params);
1703         p2p_go_dump_common_freqs(wpa_s);
1704
1705         ssid = wpa_s->current_ssid;
1706         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1707                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1708                 if (wpa_s->global->p2p_group_formation == wpa_s)
1709                         wpa_s->global->p2p_group_formation = NULL;
1710                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1711                                        params->passphrase[0] == '\0' ?
1712                                        params->psk : NULL,
1713                                        params->passphrase,
1714                                        wpa_s->global->p2p_dev_addr,
1715                                        params->persistent_group, "");
1716                 wpa_s->group_formation_reported = 1;
1717
1718                 if (wpa_s->parent->p2ps_method_config_any) {
1719                         if (is_zero_ether_addr(wpa_s->parent->p2ps_join_addr)) {
1720                                 wpa_dbg(wpa_s, MSG_DEBUG,
1721                                         "P2PS: Setting default PIN for ANY");
1722                                 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1723                                                           "12345670", NULL, 0,
1724                                                           0);
1725                         } else {
1726                                 wpa_dbg(wpa_s, MSG_DEBUG,
1727                                         "P2PS: Setting default PIN for " MACSTR,
1728                                         MAC2STR(wpa_s->parent->p2ps_join_addr));
1729                                 wpa_supplicant_ap_wps_pin(
1730                                         wpa_s, wpa_s->parent->p2ps_join_addr,
1731                                         "12345670", NULL, 0, 0);
1732                         }
1733                         wpa_s->parent->p2ps_method_config_any = 0;
1734                 }
1735
1736                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1737                 if (params->persistent_group) {
1738                         network_id = wpas_p2p_store_persistent_group(
1739                                 wpa_s->parent, ssid,
1740                                 wpa_s->global->p2p_dev_addr);
1741                         wpas_p2p_add_psk_list(wpa_s, ssid);
1742                 }
1743                 if (network_id < 0)
1744                         network_id = ssid->id;
1745                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1746                 wpas_p2p_cross_connect_setup(wpa_s);
1747                 wpas_p2p_set_group_idle_timeout(wpa_s);
1748
1749                 if (wpa_s->p2p_first_connection_timeout) {
1750                         wpa_dbg(wpa_s, MSG_DEBUG,
1751                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1752                                 wpa_s->p2p_first_connection_timeout);
1753                         wpa_s->p2p_go_group_formation_completed = 0;
1754                         wpa_s->global->p2p_group_formation = wpa_s;
1755                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1756                                              wpa_s->parent, NULL);
1757                         eloop_register_timeout(
1758                                 wpa_s->p2p_first_connection_timeout, 0,
1759                                 wpas_p2p_group_formation_timeout,
1760                                 wpa_s->parent, NULL);
1761                 }
1762
1763                 return;
1764         }
1765
1766         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1767         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1768                                               params->peer_interface_addr)) {
1769                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1770                            "filtering");
1771                 return;
1772         }
1773         if (params->wps_method == WPS_PBC) {
1774                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1775                                           params->peer_device_addr);
1776 #ifdef CONFIG_WPS_NFC
1777         } else if (params->wps_method == WPS_NFC) {
1778                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1779                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1780                     !wpa_s->parent->p2p_oob_dev_pw) {
1781                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1782                         return;
1783                 }
1784                 wpas_ap_wps_add_nfc_pw(
1785                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1786                         wpa_s->parent->p2p_oob_dev_pw,
1787                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1788                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1789 #endif /* CONFIG_WPS_NFC */
1790         } else if (wpa_s->p2p_pin[0])
1791                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1792                                           wpa_s->p2p_pin, NULL, 0, 0);
1793         os_free(wpa_s->go_params);
1794         wpa_s->go_params = NULL;
1795 }
1796
1797
1798 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1799                               struct p2p_go_neg_results *params,
1800                               int group_formation)
1801 {
1802         struct wpa_ssid *ssid;
1803
1804         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1805         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1806                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1807                         "results");
1808                 return;
1809         }
1810
1811         ssid = wpa_config_add_network(wpa_s->conf);
1812         if (ssid == NULL) {
1813                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1814                 return;
1815         }
1816
1817         wpa_s->show_group_started = 0;
1818         wpa_s->p2p_go_group_formation_completed = 0;
1819         wpa_s->group_formation_reported = 0;
1820         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1821
1822         wpa_config_set_network_defaults(ssid);
1823         ssid->temporary = 1;
1824         ssid->p2p_group = 1;
1825         ssid->p2p_persistent_group = params->persistent_group;
1826         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1827                 WPAS_MODE_P2P_GO;
1828         ssid->frequency = params->freq;
1829         ssid->ht40 = params->ht40;
1830         ssid->vht = params->vht;
1831         ssid->ssid = os_zalloc(params->ssid_len + 1);
1832         if (ssid->ssid) {
1833                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1834                 ssid->ssid_len = params->ssid_len;
1835         }
1836         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1837         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1838         ssid->proto = WPA_PROTO_RSN;
1839         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1840         ssid->group_cipher = WPA_CIPHER_CCMP;
1841         if (params->freq > 56160) {
1842                 /*
1843                  * Enable GCMP instead of CCMP as pairwise_cipher and
1844                  * group_cipher in 60 GHz.
1845                  */
1846                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1847                 ssid->group_cipher = WPA_CIPHER_GCMP;
1848         }
1849         if (os_strlen(params->passphrase) > 0) {
1850                 ssid->passphrase = os_strdup(params->passphrase);
1851                 if (ssid->passphrase == NULL) {
1852                         wpa_msg_global(wpa_s, MSG_ERROR,
1853                                        "P2P: Failed to copy passphrase for GO");
1854                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1855                         return;
1856                 }
1857         } else
1858                 ssid->passphrase = NULL;
1859         ssid->psk_set = params->psk_set;
1860         if (ssid->psk_set)
1861                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1862         else if (ssid->passphrase)
1863                 wpa_config_update_psk(ssid);
1864         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1865
1866         wpa_s->ap_configured_cb = p2p_go_configured;
1867         wpa_s->ap_configured_cb_ctx = wpa_s;
1868         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1869         wpa_s->scan_req = NORMAL_SCAN_REQ;
1870         wpa_s->connect_without_scan = ssid;
1871         wpa_s->reassociate = 1;
1872         wpa_s->disconnected = 0;
1873         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1874                 "start GO)");
1875         wpa_supplicant_req_scan(wpa_s, 0, 0);
1876 }
1877
1878
1879 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1880                                   const struct wpa_supplicant *src)
1881 {
1882         struct wpa_config *d;
1883         const struct wpa_config *s;
1884
1885         d = dst->conf;
1886         s = src->conf;
1887
1888 #define C(n) if (s->n) d->n = os_strdup(s->n)
1889         C(device_name);
1890         C(manufacturer);
1891         C(model_name);
1892         C(model_number);
1893         C(serial_number);
1894         C(config_methods);
1895 #undef C
1896
1897         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1898         os_memcpy(d->sec_device_type, s->sec_device_type,
1899                   sizeof(d->sec_device_type));
1900         d->num_sec_device_types = s->num_sec_device_types;
1901
1902         d->p2p_group_idle = s->p2p_group_idle;
1903         d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
1904         d->p2p_intra_bss = s->p2p_intra_bss;
1905         d->persistent_reconnect = s->persistent_reconnect;
1906         d->max_num_sta = s->max_num_sta;
1907         d->pbc_in_m1 = s->pbc_in_m1;
1908         d->ignore_old_scan_res = s->ignore_old_scan_res;
1909         d->beacon_int = s->beacon_int;
1910         d->dtim_period = s->dtim_period;
1911         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1912         d->disassoc_low_ack = s->disassoc_low_ack;
1913         d->disable_scan_offload = s->disable_scan_offload;
1914         d->passive_scan = s->passive_scan;
1915
1916         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1917                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1918                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1919         }
1920         d->p2p_cli_probe = s->p2p_cli_probe;
1921 }
1922
1923
1924 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1925                                       char *ifname, size_t len)
1926 {
1927         char *ifname_ptr = wpa_s->ifname;
1928
1929         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1930                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1931                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1932         }
1933
1934         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1935         if (os_strlen(ifname) >= IFNAMSIZ &&
1936             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1937                 int res;
1938
1939                 /* Try to avoid going over the IFNAMSIZ length limit */
1940                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1941                 if (os_snprintf_error(len, res) && len)
1942                         ifname[len - 1] = '\0';
1943         }
1944 }
1945
1946
1947 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1948                                         enum wpa_driver_if_type type)
1949 {
1950         char ifname[120], force_ifname[120];
1951
1952         if (wpa_s->pending_interface_name[0]) {
1953                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1954                            "- skip creation of a new one");
1955                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1956                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1957                                    "unknown?! ifname='%s'",
1958                                    wpa_s->pending_interface_name);
1959                         return -1;
1960                 }
1961                 return 0;
1962         }
1963
1964         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1965         force_ifname[0] = '\0';
1966
1967         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1968                    ifname);
1969         wpa_s->p2p_group_idx++;
1970
1971         wpa_s->pending_interface_type = type;
1972         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1973                            wpa_s->pending_interface_addr, NULL) < 0) {
1974                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1975                            "interface");
1976                 return -1;
1977         }
1978
1979         if (force_ifname[0]) {
1980                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1981                            force_ifname);
1982                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1983                            sizeof(wpa_s->pending_interface_name));
1984         } else
1985                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1986                            sizeof(wpa_s->pending_interface_name));
1987         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1988                    MACSTR, wpa_s->pending_interface_name,
1989                    MAC2STR(wpa_s->pending_interface_addr));
1990
1991         return 0;
1992 }
1993
1994
1995 static void wpas_p2p_remove_pending_group_interface(
1996         struct wpa_supplicant *wpa_s)
1997 {
1998         if (!wpa_s->pending_interface_name[0] ||
1999             is_zero_ether_addr(wpa_s->pending_interface_addr))
2000                 return; /* No pending virtual interface */
2001
2002         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2003                    wpa_s->pending_interface_name);
2004         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2005                           wpa_s->pending_interface_name);
2006         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2007         wpa_s->pending_interface_name[0] = '\0';
2008         wpa_s->global->pending_group_iface_for_p2ps = 0;
2009 }
2010
2011
2012 static struct wpa_supplicant *
2013 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2014 {
2015         struct wpa_interface iface;
2016         struct wpa_supplicant *group_wpa_s;
2017
2018         if (!wpa_s->pending_interface_name[0]) {
2019                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2020                 if (!wpas_p2p_create_iface(wpa_s))
2021                         return NULL;
2022                 /*
2023                  * Something has forced us to remove the pending interface; try
2024                  * to create a new one and hope for the best that we will get
2025                  * the same local address.
2026                  */
2027                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2028                                                  WPA_IF_P2P_CLIENT) < 0)
2029                         return NULL;
2030         }
2031
2032         os_memset(&iface, 0, sizeof(iface));
2033         iface.ifname = wpa_s->pending_interface_name;
2034         iface.driver = wpa_s->driver->name;
2035         if (wpa_s->conf->ctrl_interface == NULL &&
2036             wpa_s->parent != wpa_s &&
2037             wpa_s->p2p_mgmt &&
2038             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2039                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2040         else
2041                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2042         iface.driver_param = wpa_s->conf->driver_param;
2043         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2044         if (group_wpa_s == NULL) {
2045                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2046                            "wpa_supplicant interface");
2047                 return NULL;
2048         }
2049         wpa_s->pending_interface_name[0] = '\0';
2050         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2051                 P2P_GROUP_INTERFACE_CLIENT;
2052         wpa_s->global->p2p_group_formation = group_wpa_s;
2053         wpa_s->global->pending_group_iface_for_p2ps = 0;
2054
2055         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2056
2057         return group_wpa_s;
2058 }
2059
2060
2061 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2062                                              void *timeout_ctx)
2063 {
2064         struct wpa_supplicant *wpa_s = eloop_ctx;
2065         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2066         wpas_p2p_group_formation_failed(wpa_s, 0);
2067 }
2068
2069
2070 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2071                                             int already_deleted)
2072 {
2073         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2074                              wpa_s->parent, NULL);
2075         if (wpa_s->global->p2p)
2076                 p2p_group_formation_failed(wpa_s->global->p2p);
2077         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2078 }
2079
2080
2081 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2082 {
2083         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2084         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2085                              wpa_s->parent, NULL);
2086         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2087                                wpa_s->parent, NULL);
2088         wpa_s->global->p2p_fail_on_wps_complete = 0;
2089 }
2090
2091
2092 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2093 {
2094         if (wpa_s->global->p2p_group_formation != wpa_s)
2095                 return;
2096         /* Speed up group formation timeout since this cannot succeed */
2097         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2098                              wpa_s->parent, NULL);
2099         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2100                                wpa_s->parent, NULL);
2101 }
2102
2103
2104 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2105 {
2106         struct wpa_supplicant *wpa_s = ctx;
2107
2108         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2109                 wpa_drv_cancel_remain_on_channel(wpa_s);
2110                 wpa_s->off_channel_freq = 0;
2111                 wpa_s->roc_waiting_drv_freq = 0;
2112         }
2113
2114         if (res->status) {
2115                 wpa_msg_global(wpa_s, MSG_INFO,
2116                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2117                                res->status);
2118                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2119                 wpas_p2p_remove_pending_group_interface(wpa_s);
2120                 return;
2121         }
2122
2123         if (!res->role_go) {
2124                 /* Inform driver of the operating channel of GO. */
2125                 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2126         }
2127
2128         if (wpa_s->p2p_go_ht40)
2129                 res->ht40 = 1;
2130         if (wpa_s->p2p_go_vht)
2131                 res->vht = 1;
2132
2133         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2134                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2135                        " wps_method=%s",
2136                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2137                        MAC2STR(res->peer_device_addr),
2138                        MAC2STR(res->peer_interface_addr),
2139                        p2p_wps_method_text(res->wps_method));
2140         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2141
2142         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2143                 struct wpa_ssid *ssid;
2144                 ssid = wpa_config_get_network(wpa_s->conf,
2145                                               wpa_s->p2p_persistent_id);
2146                 if (ssid && ssid->disabled == 2 &&
2147                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2148                         size_t len = os_strlen(ssid->passphrase);
2149                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2150                                    "on requested persistent group");
2151                         os_memcpy(res->passphrase, ssid->passphrase, len);
2152                         res->passphrase[len] = '\0';
2153                 }
2154         }
2155
2156         if (wpa_s->create_p2p_iface) {
2157                 struct wpa_supplicant *group_wpa_s =
2158                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2159                 if (group_wpa_s == NULL) {
2160                         wpas_p2p_remove_pending_group_interface(wpa_s);
2161                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2162                                              wpa_s, NULL);
2163                         wpas_p2p_group_formation_failed(wpa_s, 1);
2164                         return;
2165                 }
2166                 if (group_wpa_s != wpa_s) {
2167                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2168                                   sizeof(group_wpa_s->p2p_pin));
2169                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2170                 }
2171                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2172                 wpa_s->pending_interface_name[0] = '\0';
2173                 group_wpa_s->p2p_in_provisioning = 1;
2174
2175                 if (res->role_go) {
2176                         wpas_start_wps_go(group_wpa_s, res, 1);
2177                 } else {
2178                         os_get_reltime(&group_wpa_s->scan_min_time);
2179                         wpas_start_wps_enrollee(group_wpa_s, res);
2180                 }
2181         } else {
2182                 wpa_s->p2p_in_provisioning = 1;
2183                 wpa_s->global->p2p_group_formation = wpa_s;
2184
2185                 if (res->role_go) {
2186                         wpas_start_wps_go(wpa_s, res, 1);
2187                 } else {
2188                         os_get_reltime(&wpa_s->scan_min_time);
2189                         wpas_start_wps_enrollee(ctx, res);
2190                 }
2191         }
2192
2193         wpa_s->p2p_long_listen = 0;
2194         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2195
2196         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2197         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2198                                (res->peer_config_timeout % 100) * 10000,
2199                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2200 }
2201
2202
2203 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2204                                u8 go_intent)
2205 {
2206         struct wpa_supplicant *wpa_s = ctx;
2207         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2208                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2209                        dev_passwd_id, go_intent);
2210
2211         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2212 }
2213
2214
2215 static void wpas_dev_found(void *ctx, const u8 *addr,
2216                            const struct p2p_peer_info *info,
2217                            int new_device)
2218 {
2219 #ifndef CONFIG_NO_STDOUT_DEBUG
2220         struct wpa_supplicant *wpa_s = ctx;
2221         char devtype[WPS_DEV_TYPE_BUFSIZE];
2222         char *wfd_dev_info_hex = NULL;
2223
2224 #ifdef CONFIG_WIFI_DISPLAY
2225         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2226                                                     WFD_SUBELEM_DEVICE_INFO);
2227 #endif /* CONFIG_WIFI_DISPLAY */
2228
2229         if (info->p2ps_instance) {
2230                 char str[256];
2231                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2232                 size_t len = wpabuf_len(info->p2ps_instance);
2233
2234                 while (len) {
2235                         u32 id;
2236                         u16 methods;
2237                         u8 str_len;
2238
2239                         if (len < 4 + 2 + 1)
2240                                 break;
2241                         id = WPA_GET_LE32(buf);
2242                         buf += sizeof(u32);
2243                         methods = WPA_GET_BE16(buf);
2244                         buf += sizeof(u16);
2245                         str_len = *buf++;
2246                         if (str_len > len - 4 - 2 - 1)
2247                                 break;
2248                         os_memcpy(str, buf, str_len);
2249                         str[str_len] = '\0';
2250                         buf += str_len;
2251                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2252
2253                         wpa_msg_global(wpa_s, MSG_INFO,
2254                                        P2P_EVENT_DEVICE_FOUND MACSTR
2255                                        " p2p_dev_addr=" MACSTR
2256                                        " pri_dev_type=%s name='%s'"
2257                                        " config_methods=0x%x"
2258                                        " dev_capab=0x%x"
2259                                        " group_capab=0x%x"
2260                                        " adv_id=%x asp_svc=%s%s",
2261                                        MAC2STR(addr),
2262                                        MAC2STR(info->p2p_device_addr),
2263                                        wps_dev_type_bin2str(
2264                                                info->pri_dev_type,
2265                                                devtype, sizeof(devtype)),
2266                                        info->device_name, methods,
2267                                        info->dev_capab, info->group_capab,
2268                                        id, str,
2269                                        info->vendor_elems ?
2270                                        " vendor_elems=1" : "");
2271                 }
2272                 goto done;
2273         }
2274
2275         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2276                        " p2p_dev_addr=" MACSTR
2277                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2278                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2279                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2280                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2281                                             sizeof(devtype)),
2282                        info->device_name, info->config_methods,
2283                        info->dev_capab, info->group_capab,
2284                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2285                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2286                        info->vendor_elems ? " vendor_elems=1" : "",
2287                        new_device);
2288
2289 done:
2290         os_free(wfd_dev_info_hex);
2291 #endif /* CONFIG_NO_STDOUT_DEBUG */
2292
2293         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2294 }
2295
2296
2297 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2298 {
2299         struct wpa_supplicant *wpa_s = ctx;
2300
2301         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2302                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2303
2304         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2305 }
2306
2307
2308 static void wpas_find_stopped(void *ctx)
2309 {
2310         struct wpa_supplicant *wpa_s = ctx;
2311         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2312         wpas_notify_p2p_find_stopped(wpa_s);
2313 }
2314
2315
2316 struct wpas_p2p_listen_work {
2317         unsigned int freq;
2318         unsigned int duration;
2319         struct wpabuf *probe_resp_ie;
2320 };
2321
2322
2323 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2324 {
2325         if (lwork == NULL)
2326                 return;
2327         wpabuf_free(lwork->probe_resp_ie);
2328         os_free(lwork);
2329 }
2330
2331
2332 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2333 {
2334         struct wpas_p2p_listen_work *lwork;
2335
2336         if (!wpa_s->p2p_listen_work)
2337                 return;
2338
2339         lwork = wpa_s->p2p_listen_work->ctx;
2340         wpas_p2p_listen_work_free(lwork);
2341         radio_work_done(wpa_s->p2p_listen_work);
2342         wpa_s->p2p_listen_work = NULL;
2343 }
2344
2345
2346 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2347 {
2348         struct wpa_supplicant *wpa_s = work->wpa_s;
2349         struct wpas_p2p_listen_work *lwork = work->ctx;
2350         unsigned int duration;
2351
2352         if (deinit) {
2353                 if (work->started) {
2354                         wpa_s->p2p_listen_work = NULL;
2355                         wpas_stop_listen(wpa_s);
2356                 }
2357                 wpas_p2p_listen_work_free(lwork);
2358                 return;
2359         }
2360
2361         wpa_s->p2p_listen_work = work;
2362
2363         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2364
2365         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2366                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2367                            "report received Probe Request frames");
2368                 wpas_p2p_listen_work_done(wpa_s);
2369                 return;
2370         }
2371
2372         wpa_s->pending_listen_freq = lwork->freq;
2373         wpa_s->pending_listen_duration = lwork->duration;
2374
2375         duration = lwork->duration;
2376 #ifdef CONFIG_TESTING_OPTIONS
2377         if (wpa_s->extra_roc_dur) {
2378                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2379                            duration, duration + wpa_s->extra_roc_dur);
2380                 duration += wpa_s->extra_roc_dur;
2381         }
2382 #endif /* CONFIG_TESTING_OPTIONS */
2383
2384         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2385                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2386                            "to remain on channel (%u MHz) for Listen "
2387                            "state", lwork->freq);
2388                 wpas_p2p_listen_work_done(wpa_s);
2389                 wpa_s->pending_listen_freq = 0;
2390                 return;
2391         }
2392         wpa_s->off_channel_freq = 0;
2393         wpa_s->roc_waiting_drv_freq = lwork->freq;
2394 }
2395
2396
2397 static int wpas_start_listen(void *ctx, unsigned int freq,
2398                              unsigned int duration,
2399                              const struct wpabuf *probe_resp_ie)
2400 {
2401         struct wpa_supplicant *wpa_s = ctx;
2402         struct wpas_p2p_listen_work *lwork;
2403
2404         if (wpa_s->p2p_listen_work) {
2405                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2406                 return -1;
2407         }
2408
2409         lwork = os_zalloc(sizeof(*lwork));
2410         if (lwork == NULL)
2411                 return -1;
2412         lwork->freq = freq;
2413         lwork->duration = duration;
2414         if (probe_resp_ie) {
2415                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2416                 if (lwork->probe_resp_ie == NULL) {
2417                         wpas_p2p_listen_work_free(lwork);
2418                         return -1;
2419                 }
2420         }
2421
2422         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2423                            lwork) < 0) {
2424                 wpas_p2p_listen_work_free(lwork);
2425                 return -1;
2426         }
2427
2428         return 0;
2429 }
2430
2431
2432 static void wpas_stop_listen(void *ctx)
2433 {
2434         struct wpa_supplicant *wpa_s = ctx;
2435         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2436                 wpa_drv_cancel_remain_on_channel(wpa_s);
2437                 wpa_s->off_channel_freq = 0;
2438                 wpa_s->roc_waiting_drv_freq = 0;
2439         }
2440         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2441
2442         /*
2443          * Don't cancel Probe Request RX reporting for a connected P2P Client
2444          * handling Probe Request frames.
2445          */
2446         if (!wpa_s->p2p_cli_probe)
2447                 wpa_drv_probe_req_report(wpa_s, 0);
2448
2449         wpas_p2p_listen_work_done(wpa_s);
2450 }
2451
2452
2453 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2454                                 unsigned int freq)
2455 {
2456         struct wpa_supplicant *wpa_s = ctx;
2457         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2458                                  freq);
2459 }
2460
2461
2462 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2463                                          const u8 *peer, const char *params,
2464                                          unsigned int generated_pin)
2465 {
2466         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2467                        " %08d%s", MAC2STR(peer), generated_pin, params);
2468 }
2469
2470
2471 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2472                                         const u8 *peer, const char *params)
2473 {
2474         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2475                        "%s", MAC2STR(peer), params);
2476 }
2477
2478
2479 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2480                                const u8 *dev_addr, const u8 *pri_dev_type,
2481                                const char *dev_name, u16 supp_config_methods,
2482                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2483                                size_t group_id_len)
2484 {
2485         struct wpa_supplicant *wpa_s = ctx;
2486         char devtype[WPS_DEV_TYPE_BUFSIZE];
2487         char params[300];
2488         u8 empty_dev_type[8];
2489         unsigned int generated_pin = 0;
2490         struct wpa_supplicant *group = NULL;
2491         int res;
2492
2493         if (group_id) {
2494                 for (group = wpa_s->global->ifaces; group; group = group->next)
2495                 {
2496                         struct wpa_ssid *s = group->current_ssid;
2497                         if (s != NULL &&
2498                             s->mode == WPAS_MODE_P2P_GO &&
2499                             group_id_len - ETH_ALEN == s->ssid_len &&
2500                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2501                                       s->ssid_len) == 0)
2502                                 break;
2503                 }
2504         }
2505
2506         if (pri_dev_type == NULL) {
2507                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2508                 pri_dev_type = empty_dev_type;
2509         }
2510         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2511                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2512                           "dev_capab=0x%x group_capab=0x%x%s%s",
2513                           MAC2STR(dev_addr),
2514                           wps_dev_type_bin2str(pri_dev_type, devtype,
2515                                                sizeof(devtype)),
2516                           dev_name, supp_config_methods, dev_capab, group_capab,
2517                           group ? " group=" : "",
2518                           group ? group->ifname : "");
2519         if (os_snprintf_error(sizeof(params), res))
2520                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2521         params[sizeof(params) - 1] = '\0';
2522
2523         if (config_methods & WPS_CONFIG_DISPLAY) {
2524                 generated_pin = wps_generate_pin();
2525                 wpas_prov_disc_local_display(wpa_s, peer, params,
2526                                              generated_pin);
2527         } else if (config_methods & WPS_CONFIG_KEYPAD)
2528                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2529         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2530                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2531                                MACSTR "%s", MAC2STR(peer), params);
2532
2533         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2534                                             P2P_PROV_DISC_SUCCESS,
2535                                             config_methods, generated_pin);
2536 }
2537
2538
2539 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2540 {
2541         struct wpa_supplicant *wpa_s = ctx;
2542         unsigned int generated_pin = 0;
2543         char params[20];
2544
2545         if (wpa_s->pending_pd_before_join &&
2546             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2547              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2548                 wpa_s->pending_pd_before_join = 0;
2549                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2550                            "join-existing-group operation");
2551                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2552                 return;
2553         }
2554
2555         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2556             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2557                 int res;
2558
2559                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2560                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2561                 if (os_snprintf_error(sizeof(params), res))
2562                         params[sizeof(params) - 1] = '\0';
2563         } else
2564                 params[0] = '\0';
2565
2566         if (config_methods & WPS_CONFIG_DISPLAY)
2567                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2568         else if (config_methods & WPS_CONFIG_KEYPAD) {
2569                 generated_pin = wps_generate_pin();
2570                 wpas_prov_disc_local_display(wpa_s, peer, params,
2571                                              generated_pin);
2572         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2573                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2574                                MACSTR "%s", MAC2STR(peer), params);
2575
2576         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2577                                             P2P_PROV_DISC_SUCCESS,
2578                                             config_methods, generated_pin);
2579 }
2580
2581
2582 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2583                                 enum p2p_prov_disc_status status,
2584                                 u32 adv_id, const u8 *adv_mac,
2585                                 const char *deferred_session_resp)
2586 {
2587         struct wpa_supplicant *wpa_s = ctx;
2588
2589         if (wpa_s->p2p_fallback_to_go_neg) {
2590                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2591                         "failed - fall back to GO Negotiation");
2592                 wpa_msg_global(wpa_s->parent, MSG_INFO,
2593                                P2P_EVENT_FALLBACK_TO_GO_NEG
2594                                "reason=PD-failed");
2595                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2596                 return;
2597         }
2598
2599         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2600                 wpa_s->pending_pd_before_join = 0;
2601                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2602                            "join-existing-group operation (no ACK for PD "
2603                            "Req attempts)");
2604                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2605                 return;
2606         }
2607
2608         if (adv_id && adv_mac && deferred_session_resp) {
2609                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2610                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2611                                " deferred_session_resp='%s'",
2612                                MAC2STR(peer), status, adv_id,
2613                                deferred_session_resp);
2614         } else if (adv_id && adv_mac) {
2615                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2616                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2617                                MAC2STR(peer), status, adv_id);
2618         } else {
2619                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2620                                " p2p_dev_addr=" MACSTR " status=%d",
2621                                MAC2STR(peer), status);
2622         }
2623
2624         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2625                                             status, 0, 0);
2626 }
2627
2628
2629 static int freq_included(struct wpa_supplicant *wpa_s,
2630                          const struct p2p_channels *channels,
2631                          unsigned int freq)
2632 {
2633         if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2634             wpas_p2p_go_is_peer_freq(wpa_s, freq))
2635                 return 1;
2636         return 0;
2637 }
2638
2639
2640 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2641 {
2642         unsigned int num = P2P_MAX_CHANNELS;
2643         int *common_freqs;
2644         int ret;
2645
2646         p2p_go_dump_common_freqs(wpa_s);
2647         common_freqs = os_calloc(num, sizeof(int));
2648         if (!common_freqs)
2649                 return;
2650
2651         ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2652         if (ret < 0) {
2653                 wpa_dbg(wpa_s, MSG_DEBUG,
2654                         "P2P: Failed to get group common freqs");
2655                 os_free(common_freqs);
2656                 return;
2657         }
2658
2659         os_free(wpa_s->p2p_group_common_freqs);
2660         wpa_s->p2p_group_common_freqs = common_freqs;
2661         wpa_s->p2p_group_common_freqs_num = num;
2662         p2p_go_dump_common_freqs(wpa_s);
2663 }
2664
2665
2666 /*
2667  * Check if the given frequency is one of the possible operating frequencies
2668  * set after the completion of the GO Negotiation.
2669  */
2670 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2671 {
2672         unsigned int i;
2673
2674         p2p_go_dump_common_freqs(wpa_s);
2675
2676         /* assume no restrictions */
2677         if (!wpa_s->p2p_group_common_freqs_num)
2678                 return 1;
2679
2680         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2681                 if (wpa_s->p2p_group_common_freqs[i] == freq)
2682                         return 1;
2683         }
2684         return 0;
2685 }
2686
2687
2688 /**
2689  * Pick the best frequency to use from all the currently used frequencies.
2690  */
2691 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2692                                         struct wpa_used_freq_data *freqs,
2693                                         unsigned int num)
2694 {
2695         unsigned int i, c;
2696
2697         /* find a candidate freq that is supported by P2P */
2698         for (c = 0; c < num; c++)
2699                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2700                         break;
2701
2702         if (c == num)
2703                 return 0;
2704
2705         /* once we have a candidate, try to find a 'better' one */
2706         for (i = c + 1; i < num; i++) {
2707                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2708                         continue;
2709
2710                 /*
2711                  * 1. Infrastructure station interfaces have higher preference.
2712                  * 2. P2P Clients have higher preference.
2713                  * 3. All others.
2714                  */
2715                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2716                         c = i;
2717                         break;
2718                 }
2719
2720                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2721                         c = i;
2722         }
2723         return freqs[c].freq;
2724 }
2725
2726
2727 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2728                                   const u8 *go_dev_addr, const u8 *ssid,
2729                                   size_t ssid_len, int *go, u8 *group_bssid,
2730                                   int *force_freq, int persistent_group,
2731                                   const struct p2p_channels *channels,
2732                                   int dev_pw_id)
2733 {
2734         struct wpa_supplicant *wpa_s = ctx;
2735         struct wpa_ssid *s;
2736         struct wpa_used_freq_data *freqs;
2737         struct wpa_supplicant *grp;
2738         int best_freq;
2739
2740         if (!persistent_group) {
2741                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2742                            " to join an active group (SSID: %s)",
2743                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2744                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2745                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2746                      == 0 ||
2747                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2748                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2749                                    "authorized invitation");
2750                         goto accept_inv;
2751                 }
2752
2753 #ifdef CONFIG_WPS_NFC
2754                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2755                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2756                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2757                         wpa_s->p2p_wps_method = WPS_NFC;
2758                         wpa_s->pending_join_wps_method = WPS_NFC;
2759                         os_memcpy(wpa_s->pending_join_dev_addr,
2760                                   go_dev_addr, ETH_ALEN);
2761                         os_memcpy(wpa_s->pending_join_iface_addr,
2762                                   bssid, ETH_ALEN);
2763                         goto accept_inv;
2764                 }
2765 #endif /* CONFIG_WPS_NFC */
2766
2767                 /*
2768                  * Do not accept the invitation automatically; notify user and
2769                  * request approval.
2770                  */
2771                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2772         }
2773
2774         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2775         if (grp) {
2776                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2777                            "running persistent group");
2778                 if (*go)
2779                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2780                 goto accept_inv;
2781         }
2782
2783         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2784             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2785                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2786                            "invitation to re-invoke a persistent group");
2787                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2788         } else if (!wpa_s->conf->persistent_reconnect)
2789                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2790
2791         for (s = wpa_s->conf->ssid; s; s = s->next) {
2792                 if (s->disabled == 2 &&
2793                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2794                     s->ssid_len == ssid_len &&
2795                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2796                         break;
2797         }
2798
2799         if (!s) {
2800                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2801                            " requested reinvocation of an unknown group",
2802                            MAC2STR(sa));
2803                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2804         }
2805
2806         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2807                 *go = 1;
2808                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2809                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2810                                    "interface is already in use - reject "
2811                                    "invitation");
2812                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2813                 }
2814                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2815         } else if (s->mode == WPAS_MODE_P2P_GO) {
2816                 *go = 1;
2817                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2818                 {
2819                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2820                                    "interface address for the group");
2821                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2822                 }
2823                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2824                           ETH_ALEN);
2825         }
2826
2827 accept_inv:
2828         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2829
2830         best_freq = 0;
2831         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2832                           sizeof(struct wpa_used_freq_data));
2833         if (freqs) {
2834                 int num_channels = wpa_s->num_multichan_concurrent;
2835                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2836                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2837                 os_free(freqs);
2838         }
2839
2840         /* Get one of the frequencies currently in use */
2841         if (best_freq > 0) {
2842                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2843                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2844
2845                 if (wpa_s->num_multichan_concurrent < 2 ||
2846                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2847                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2848                         *force_freq = best_freq;
2849                 }
2850         }
2851
2852         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2853             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2854                 if (*go == 0) {
2855                         /* We are the client */
2856                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2857                                    "running a GO but we are capable of MCC, "
2858                                    "figure out the best channel to use");
2859                         *force_freq = 0;
2860                 } else if (!freq_included(wpa_s, channels, *force_freq)) {
2861                         /* We are the GO, and *force_freq is not in the
2862                          * intersection */
2863                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2864                                    "in intersection but we are capable of MCC, "
2865                                    "figure out the best channel to use",
2866                                    *force_freq);
2867                         *force_freq = 0;
2868                 }
2869         }
2870
2871         return P2P_SC_SUCCESS;
2872 }
2873
2874
2875 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2876                                      const u8 *ssid, size_t ssid_len,
2877                                      const u8 *go_dev_addr, u8 status,
2878                                      int op_freq)
2879 {
2880         struct wpa_supplicant *wpa_s = ctx;
2881         struct wpa_ssid *s;
2882
2883         for (s = wpa_s->conf->ssid; s; s = s->next) {
2884                 if (s->disabled == 2 &&
2885                     s->ssid_len == ssid_len &&
2886                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2887                         break;
2888         }
2889
2890         if (status == P2P_SC_SUCCESS) {
2891                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2892                            " was accepted; op_freq=%d MHz, SSID=%s",
2893                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
2894                 if (s) {
2895                         int go = s->mode == WPAS_MODE_P2P_GO;
2896                         wpas_p2p_group_add_persistent(
2897                                 wpa_s, s, go, 0, op_freq, 0, 0, NULL,
2898                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
2899                                 1);
2900                 } else if (bssid) {
2901                         wpa_s->user_initiated_pd = 0;
2902                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2903                                       wpa_s->p2p_wps_method, 0, op_freq,
2904                                       ssid, ssid_len);
2905                 }
2906                 return;
2907         }
2908
2909         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2910                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2911                            " was rejected (status %u)", MAC2STR(sa), status);
2912                 return;
2913         }
2914
2915         if (!s) {
2916                 if (bssid) {
2917                         wpa_msg_global(wpa_s, MSG_INFO,
2918                                        P2P_EVENT_INVITATION_RECEIVED
2919                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2920                                        " bssid=" MACSTR " unknown-network",
2921                                        MAC2STR(sa), MAC2STR(go_dev_addr),
2922                                        MAC2STR(bssid));
2923                 } else {
2924                         wpa_msg_global(wpa_s, MSG_INFO,
2925                                        P2P_EVENT_INVITATION_RECEIVED
2926                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2927                                        " unknown-network",
2928                                        MAC2STR(sa), MAC2STR(go_dev_addr));
2929                 }
2930                 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
2931                                                     bssid, 0, op_freq);
2932                 return;
2933         }
2934
2935         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
2936                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2937                                "sa=" MACSTR " persistent=%d freq=%d",
2938                                MAC2STR(sa), s->id, op_freq);
2939         } else {
2940                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2941                                "sa=" MACSTR " persistent=%d",
2942                                MAC2STR(sa), s->id);
2943         }
2944         wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
2945                                             s->id, op_freq);
2946 }
2947
2948
2949 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
2950                                         struct wpa_ssid *ssid,
2951                                         const u8 *peer, int inv)
2952 {
2953         size_t i;
2954         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
2955
2956         if (ssid == NULL)
2957                 return;
2958
2959         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
2960                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
2961                               ETH_ALEN) == 0)
2962                         break;
2963         }
2964         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
2965                 if (ssid->mode != WPAS_MODE_P2P_GO &&
2966                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
2967                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
2968                                    "due to invitation result", ssid->id);
2969                         wpas_notify_network_removed(wpa_s, ssid);
2970                         wpa_config_remove_network(wpa_s->conf, ssid->id);
2971                         return;
2972                 }
2973                 return; /* Peer not found in client list */
2974         }
2975
2976         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
2977                    "group %d client list%s",
2978                    MAC2STR(peer), ssid->id,
2979                    inv ? " due to invitation result" : "");
2980         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
2981                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
2982                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
2983         ssid->num_p2p_clients--;
2984         if (p2p_wpa_s->conf->update_config &&
2985             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
2986                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
2987 }
2988
2989
2990 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
2991                                           const u8 *peer)
2992 {
2993         struct wpa_ssid *ssid;
2994
2995         wpa_s = wpa_s->global->p2p_invite_group;
2996         if (wpa_s == NULL)
2997                 return; /* No known invitation group */
2998         ssid = wpa_s->current_ssid;
2999         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3000             !ssid->p2p_persistent_group)
3001                 return; /* Not operating as a GO in persistent group */
3002         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3003                                        ssid->ssid, ssid->ssid_len);
3004         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3005 }
3006
3007
3008 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3009                                    const struct p2p_channels *channels,
3010                                    const u8 *peer, int neg_freq,
3011                                    int peer_oper_freq)
3012 {
3013         struct wpa_supplicant *wpa_s = ctx;
3014         struct wpa_ssid *ssid;
3015         int freq;
3016
3017         if (bssid) {
3018                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3019                                "status=%d " MACSTR,
3020                                status, MAC2STR(bssid));
3021         } else {
3022                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3023                                "status=%d ", status);
3024         }
3025         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3026
3027         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3028                    status, MAC2STR(peer));
3029         if (wpa_s->pending_invite_ssid_id == -1) {
3030                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3031                         wpas_remove_persistent_client(wpa_s, peer);
3032                 return; /* Invitation to active group */
3033         }
3034
3035         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3036                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3037                            "invitation exchange to indicate readiness for "
3038                            "re-invocation");
3039         }
3040
3041         if (status != P2P_SC_SUCCESS) {
3042                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3043                         ssid = wpa_config_get_network(
3044                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3045                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3046                 }
3047                 wpas_p2p_remove_pending_group_interface(wpa_s);
3048                 return;
3049         }
3050
3051         ssid = wpa_config_get_network(wpa_s->conf,
3052                                       wpa_s->pending_invite_ssid_id);
3053         if (ssid == NULL) {
3054                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3055                            "data matching with invitation");
3056                 return;
3057         }
3058
3059         /*
3060          * The peer could have missed our ctrl::ack frame for Invitation
3061          * Response and continue retransmitting the frame. To reduce the
3062          * likelihood of the peer not getting successful TX status for the
3063          * Invitation Response frame, wait a short time here before starting
3064          * the persistent group so that we will remain on the current channel to
3065          * acknowledge any possible retransmission from the peer.
3066          */
3067         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3068                 "starting persistent group");
3069         os_sleep(0, 50000);
3070
3071         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3072             freq_included(wpa_s, channels, neg_freq))
3073                 freq = neg_freq;
3074         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3075                  freq_included(wpa_s, channels, peer_oper_freq))
3076                 freq = peer_oper_freq;
3077         else
3078                 freq = 0;
3079
3080         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3081                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3082         wpas_p2p_group_add_persistent(wpa_s, ssid,
3083                                       ssid->mode == WPAS_MODE_P2P_GO,
3084                                       wpa_s->p2p_persistent_go_freq,
3085                                       freq,
3086                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3087                                       channels,
3088                                       ssid->mode == WPAS_MODE_P2P_GO ?
3089                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3090                                       0, 1);
3091 }
3092
3093
3094 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3095                                     unsigned int freq)
3096 {
3097         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3098                 return 1;
3099         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3100 }
3101
3102
3103 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3104 {
3105         reg->channel[reg->channels] = chan;
3106         reg->channels++;
3107 }
3108
3109
3110 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3111                                      struct p2p_channels *chan,
3112                                      struct p2p_channels *cli_chan)
3113 {
3114         int i, cla = 0;
3115
3116         wpa_s->global->p2p_24ghz_social_channels = 1;
3117
3118         os_memset(cli_chan, 0, sizeof(*cli_chan));
3119
3120         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3121                    "band");
3122
3123         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3124         chan->reg_class[cla].reg_class = 81;
3125         chan->reg_class[cla].channels = 0;
3126         for (i = 0; i < 11; i++) {
3127                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3128                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3129         }
3130         if (chan->reg_class[cla].channels)
3131                 cla++;
3132
3133         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3134                    "band");
3135
3136         /* Operating class 115 - 5 GHz, channels 36-48 */
3137         chan->reg_class[cla].reg_class = 115;
3138         chan->reg_class[cla].channels = 0;
3139         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3140                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3141         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3142                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3143         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3144                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3145         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3146                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3147         if (chan->reg_class[cla].channels)
3148                 cla++;
3149
3150         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3151                    "band");
3152
3153         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3154         chan->reg_class[cla].reg_class = 124;
3155         chan->reg_class[cla].channels = 0;
3156         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3157                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3158         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3159                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3160         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3161                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3162         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3163                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3164         if (chan->reg_class[cla].channels)
3165                 cla++;
3166
3167         chan->reg_classes = cla;
3168         return 0;
3169 }
3170
3171
3172 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3173                                           u16 num_modes,
3174                                           enum hostapd_hw_mode mode)
3175 {
3176         u16 i;
3177
3178         for (i = 0; i < num_modes; i++) {
3179                 if (modes[i].mode == mode)
3180                         return &modes[i];
3181         }
3182
3183         return NULL;
3184 }
3185
3186
3187 enum chan_allowed {
3188         NOT_ALLOWED, NO_IR, ALLOWED
3189 };
3190
3191 static int has_channel(struct wpa_global *global,
3192                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3193 {
3194         int i;
3195         unsigned int freq;
3196
3197         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3198                 chan * 5;
3199         if (wpas_p2p_disallowed_freq(global, freq))
3200                 return NOT_ALLOWED;
3201
3202         for (i = 0; i < mode->num_channels; i++) {
3203                 if (mode->channels[i].chan == chan) {
3204                         if (flags)
3205                                 *flags = mode->channels[i].flag;
3206                         if (mode->channels[i].flag &
3207                             (HOSTAPD_CHAN_DISABLED |
3208                              HOSTAPD_CHAN_RADAR))
3209                                 return NOT_ALLOWED;
3210                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3211                                 return NO_IR;
3212                         return ALLOWED;
3213                 }
3214         }
3215
3216         return NOT_ALLOWED;
3217 }
3218
3219
3220 struct p2p_oper_class_map {
3221         enum hostapd_hw_mode mode;
3222         u8 op_class;
3223         u8 min_chan;
3224         u8 max_chan;
3225         u8 inc;
3226         enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160 } bw;
3227 };
3228
3229 static const struct p2p_oper_class_map op_class[] = {
3230         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3231 #if 0 /* Do not enable HT40 on 2 GHz for now */
3232         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3233         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3234 #endif
3235         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3236         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3237         { HOSTAPD_MODE_IEEE80211A, 125, 149, 169, 4, BW20 },
3238         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3239         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3240         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3241         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3242
3243         /*
3244          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3245          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3246          * 80 MHz, but currently use the following definition for simplicity
3247          * (these center frequencies are not actual channels, which makes
3248          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3249          * removing invalid channels.
3250          */
3251         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3252         { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
3253         { -1, 0, 0, 0, 0, BW20 }
3254 };
3255
3256
3257 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3258                                      struct hostapd_hw_modes *mode,
3259                                      u8 channel)
3260 {
3261         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3262         unsigned int i;
3263
3264         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3265                 return 0;
3266
3267         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3268                 /*
3269                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3270                  * so the center channel is 6 channels away from the start/end.
3271                  */
3272                 if (channel >= center_channels[i] - 6 &&
3273                     channel <= center_channels[i] + 6)
3274                         return center_channels[i];
3275
3276         return 0;
3277 }
3278
3279
3280 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3281                                                struct hostapd_hw_modes *mode,
3282                                                u8 channel, u8 bw)
3283 {
3284         u8 center_chan;
3285         int i, flags;
3286         enum chan_allowed res, ret = ALLOWED;
3287
3288         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3289         if (!center_chan)
3290                 return NOT_ALLOWED;
3291         if (center_chan >= 58 && center_chan <= 138)
3292                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3293
3294         /* check all the channels are available */
3295         for (i = 0; i < 4; i++) {
3296                 int adj_chan = center_chan - 6 + i * 4;
3297
3298                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3299                 if (res == NOT_ALLOWED)
3300                         return NOT_ALLOWED;
3301                 if (res == NO_IR)
3302                         ret = NO_IR;
3303
3304                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3305                         return NOT_ALLOWED;
3306                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3307                         return NOT_ALLOWED;
3308                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3309                         return NOT_ALLOWED;
3310                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3311                         return NOT_ALLOWED;
3312         }
3313
3314         return ret;
3315 }
3316
3317
3318 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3319                                                  struct hostapd_hw_modes *mode,
3320                                                  u8 channel, u8 bw)
3321 {
3322         int flag = 0;
3323         enum chan_allowed res, res2;
3324
3325         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3326         if (bw == BW40MINUS) {
3327                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3328                         return NOT_ALLOWED;
3329                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3330         } else if (bw == BW40PLUS) {
3331                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3332                         return NOT_ALLOWED;
3333                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3334         } else if (bw == BW80) {
3335                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3336         }
3337
3338         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3339                 return NOT_ALLOWED;
3340         if (res == NO_IR || res2 == NO_IR)
3341                 return NO_IR;
3342         return res;
3343 }
3344
3345
3346 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3347                                    struct p2p_channels *chan,
3348                                    struct p2p_channels *cli_chan)
3349 {
3350         struct hostapd_hw_modes *mode;
3351         int cla, op, cli_cla;
3352
3353         if (wpa_s->hw.modes == NULL) {
3354                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3355                            "of all supported channels; assume dualband "
3356                            "support");
3357                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3358         }
3359
3360         cla = cli_cla = 0;
3361
3362         for (op = 0; op_class[op].op_class; op++) {
3363                 const struct p2p_oper_class_map *o = &op_class[op];
3364                 u8 ch;
3365                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3366
3367                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3368                 if (mode == NULL)
3369                         continue;
3370                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3371                         wpa_s->global->p2p_24ghz_social_channels = 1;
3372                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3373                         enum chan_allowed res;
3374                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3375                         if (res == ALLOWED) {
3376                                 if (reg == NULL) {
3377                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3378                                                    o->op_class);
3379                                         reg = &chan->reg_class[cla];
3380                                         cla++;
3381                                         reg->reg_class = o->op_class;
3382                                 }
3383                                 reg->channel[reg->channels] = ch;
3384                                 reg->channels++;
3385                         } else if (res == NO_IR &&
3386                                    wpa_s->conf->p2p_add_cli_chan) {
3387                                 if (cli_reg == NULL) {
3388                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3389                                                    o->op_class);
3390                                         cli_reg = &cli_chan->reg_class[cli_cla];
3391                                         cli_cla++;
3392                                         cli_reg->reg_class = o->op_class;
3393                                 }
3394                                 cli_reg->channel[cli_reg->channels] = ch;
3395                                 cli_reg->channels++;
3396                         }
3397                 }
3398                 if (reg) {
3399                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3400                                     reg->channel, reg->channels);
3401                 }
3402                 if (cli_reg) {
3403                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3404                                     cli_reg->channel, cli_reg->channels);
3405                 }
3406         }
3407
3408         chan->reg_classes = cla;
3409         cli_chan->reg_classes = cli_cla;
3410
3411         return 0;
3412 }
3413
3414
3415 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3416                            struct hostapd_hw_modes *mode, u8 channel)
3417 {
3418         int op;
3419         enum chan_allowed ret;
3420
3421         for (op = 0; op_class[op].op_class; op++) {
3422                 const struct p2p_oper_class_map *o = &op_class[op];
3423                 u8 ch;
3424
3425                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3426                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3427                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3428                             ch != channel)
3429                                 continue;
3430                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3431                         if (ret == ALLOWED)
3432                                 return (o->bw == BW40MINUS) ? -1 : 1;
3433                 }
3434         }
3435         return 0;
3436 }
3437
3438
3439 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3440                               struct hostapd_hw_modes *mode, u8 channel)
3441 {
3442         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3443                 return 0;
3444
3445         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3446 }
3447
3448
3449 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3450                         size_t buf_len)
3451 {
3452         struct wpa_supplicant *wpa_s = ctx;
3453
3454         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3455                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3456                         break;
3457         }
3458         if (wpa_s == NULL)
3459                 return -1;
3460
3461         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3462 }
3463
3464
3465 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3466                                               const u8 *ssid, size_t ssid_len)
3467 {
3468         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3469                 struct wpa_ssid *s = wpa_s->current_ssid;
3470                 if (s == NULL)
3471                         continue;
3472                 if (s->mode != WPAS_MODE_P2P_GO &&
3473                     s->mode != WPAS_MODE_AP &&
3474                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3475                         continue;
3476                 if (s->ssid_len != ssid_len ||
3477                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3478                         continue;
3479                 return wpa_s;
3480         }
3481
3482         return NULL;
3483
3484 }
3485
3486
3487 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3488                                                   const u8 *peer_dev_addr)
3489 {
3490         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3491                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3492                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3493                         continue;
3494                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3495                         return wpa_s;
3496         }
3497
3498         return NULL;
3499 }
3500
3501
3502 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3503 {
3504         struct wpa_supplicant *wpa_s = ctx;
3505
3506         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3507 }
3508
3509
3510 static int wpas_is_concurrent_session_active(void *ctx)
3511 {
3512         struct wpa_supplicant *wpa_s = ctx;
3513         struct wpa_supplicant *ifs;
3514
3515         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3516                 if (ifs == wpa_s)
3517                         continue;
3518                 if (ifs->wpa_state > WPA_ASSOCIATED)
3519                         return 1;
3520         }
3521         return 0;
3522 }
3523
3524
3525 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3526 {
3527         struct wpa_supplicant *wpa_s = ctx;
3528         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3529 }
3530
3531
3532 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3533                                   const char *conf_p2p_dev)
3534 {
3535         struct wpa_interface iface;
3536         struct wpa_supplicant *p2pdev_wpa_s;
3537         char ifname[100];
3538         char force_name[100];
3539         int ret;
3540
3541         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3542                           wpa_s->ifname);
3543         if (os_snprintf_error(sizeof(ifname), ret))
3544                 return -1;
3545         force_name[0] = '\0';
3546         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3547         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3548                              force_name, wpa_s->pending_interface_addr, NULL);
3549         if (ret < 0) {
3550                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3551                 return ret;
3552         }
3553         os_strlcpy(wpa_s->pending_interface_name, ifname,
3554                    sizeof(wpa_s->pending_interface_name));
3555
3556         os_memset(&iface, 0, sizeof(iface));
3557         iface.p2p_mgmt = 1;
3558         iface.ifname = wpa_s->pending_interface_name;
3559         iface.driver = wpa_s->driver->name;
3560         iface.driver_param = wpa_s->conf->driver_param;
3561
3562         /*
3563          * If a P2P Device configuration file was given, use it as the interface
3564          * configuration file (instead of using parent's configuration file.
3565          */
3566         if (conf_p2p_dev) {
3567                 iface.confname = conf_p2p_dev;
3568                 iface.ctrl_interface = NULL;
3569         } else {
3570                 iface.confname = wpa_s->confname;
3571                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3572         }
3573
3574         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3575         if (!p2pdev_wpa_s) {
3576                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3577                 return -1;
3578         }
3579
3580         wpa_s->pending_interface_name[0] = '\0';
3581         return 0;
3582 }
3583
3584
3585 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3586                                const u8 *noa, size_t noa_len)
3587 {
3588         struct wpa_supplicant *wpa_s, *intf = ctx;
3589         char hex[100];
3590
3591         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3592                 if (wpa_s->waiting_presence_resp)
3593                         break;
3594         }
3595         if (!wpa_s) {
3596                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3597                 return;
3598         }
3599         wpa_s->waiting_presence_resp = 0;
3600
3601         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3602         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3603                 " status=%u noa=%s", MAC2STR(src), status, hex);
3604 }
3605
3606
3607 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3608                                      size_t ssid_len, u8 *go_dev_addr,
3609                                      u8 *ret_ssid, size_t *ret_ssid_len,
3610                                      u8 *intended_iface_addr)
3611 {
3612         struct wpa_supplicant *wpa_s = ctx;
3613         struct wpa_ssid *s;
3614
3615         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3616         if (s) {
3617                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3618                 *ret_ssid_len = s->ssid_len;
3619                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3620
3621                 if (s->mode != WPAS_MODE_P2P_GO) {
3622                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3623                 } else if (wpas_p2p_create_iface(wpa_s)) {
3624                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3625                                 return 0;
3626
3627                         os_memcpy(intended_iface_addr,
3628                                   wpa_s->pending_interface_addr, ETH_ALEN);
3629                 } else {
3630                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3631                                   ETH_ALEN);
3632                 }
3633                 return 1;
3634         }
3635
3636         return 0;
3637 }
3638
3639
3640 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3641                             u8 *ssid, size_t *ssid_len, int *group_iface)
3642 {
3643         struct wpa_supplicant *wpa_s = ctx;
3644         struct wpa_ssid *s;
3645         u8 bssid[ETH_ALEN];
3646
3647         /*
3648          * group_iface will be set to 1 only if a dedicated interface for P2P
3649          * role is required. First, we try to reuse an active GO. However,
3650          * if it is not present, we will try to reactivate an existing
3651          * persistent group and set group_iface to 1, so the caller will know
3652          * that the pending interface should be used.
3653          */
3654         *group_iface = 0;
3655         s = wpas_p2p_group_go_ssid(wpa_s, bssid);
3656         if (!s) {
3657                 s = wpas_p2p_get_persistent_go(wpa_s);
3658                 *group_iface = wpas_p2p_create_iface(wpa_s);
3659                 if (s)
3660                         os_memcpy(bssid, s->bssid, ETH_ALEN);
3661                 else
3662                         return 0;
3663         }
3664
3665         os_memcpy(intended_addr, bssid, ETH_ALEN);
3666         os_memcpy(ssid, s->ssid, s->ssid_len);
3667         *ssid_len = s->ssid_len;
3668
3669         return 1;
3670 }
3671
3672
3673 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3674                                     const u8 *ssid, size_t ssid_len)
3675 {
3676         struct wpa_supplicant *wpa_s = ctx;
3677         struct wpa_ssid *s;
3678         int save_config = 0;
3679         size_t i;
3680
3681         /* Start with our first choice of Persistent Groups */
3682         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3683                 if (go && ssid && ssid_len &&
3684                     s->ssid_len == ssid_len &&
3685                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3686                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3687                         break;
3688
3689                 /* Remove stale persistent group */
3690                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3691                         wpa_config_remove_network(wpa_s->conf, s->id);
3692                         save_config = 1;
3693                         continue;
3694                 }
3695
3696                 for (i = 0; i < s->num_p2p_clients; i++) {
3697                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3698                                       peer, ETH_ALEN) != 0)
3699                                 continue;
3700
3701                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3702                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3703                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3704                         break;
3705                 }
3706                 s->num_p2p_clients--;
3707                 save_config = 1;
3708         }
3709
3710         if (save_config)
3711                 p2p_config_write(wpa_s);
3712
3713         /* Return TRUE if valid SSID remains */
3714         return s != NULL;
3715 }
3716
3717
3718 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3719                                        const u8 *feat_cap, size_t feat_cap_len)
3720 {
3721         static const char pref[] = " feature_cap=";
3722         int ret;
3723
3724         buf[0] = '\0';
3725
3726         /*
3727          * We expect a feature capability to contain at least one byte to be
3728          * reported. The string buffer provided by the caller function is
3729          * expected to be big enough to contain all bytes of the attribute for
3730          * known specifications. This function truncates the reported bytes if
3731          * the feature capability data exceeds the string buffer size.
3732          */
3733         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3734                 return;
3735
3736         os_memcpy(buf, pref, sizeof(pref));
3737         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3738                                buf_len - sizeof(pref) + 1,
3739                                feat_cap, feat_cap_len);
3740
3741         if (ret != (2 * (int) feat_cap_len))
3742                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3743 }
3744
3745
3746 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3747                                     const u8 *adv_mac, const u8 *ses_mac,
3748                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3749                                     u8 conncap, int passwd_id,
3750                                     const u8 *persist_ssid,
3751                                     size_t persist_ssid_size, int response_done,
3752                                     int prov_start, const char *session_info,
3753                                     const u8 *feat_cap, size_t feat_cap_len)
3754 {
3755         struct wpa_supplicant *wpa_s = ctx;
3756         u8 mac[ETH_ALEN];
3757         struct wpa_ssid *persistent_go, *stale, *s;
3758         int save_config = 0;
3759         struct wpa_supplicant *go_wpa_s;
3760         char feat_cap_str[256];
3761
3762         if (!dev)
3763                 return;
3764
3765         os_memset(mac, 0, ETH_ALEN);
3766         if (!adv_mac)
3767                 adv_mac = mac;
3768         if (!ses_mac)
3769                 ses_mac = mac;
3770         if (!grp_mac)
3771                 grp_mac = mac;
3772
3773         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3774                                    feat_cap, feat_cap_len);
3775
3776         if (prov_start) {
3777                 if (session_info == NULL) {
3778                         wpa_msg_global(wpa_s, MSG_INFO,
3779                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3780                                        " adv_id=%x conncap=%x"
3781                                        " adv_mac=" MACSTR
3782                                        " session=%x mac=" MACSTR
3783                                        " dev_passwd_id=%d%s",
3784                                        MAC2STR(dev), adv_id, conncap,
3785                                        MAC2STR(adv_mac),
3786                                        ses_id, MAC2STR(ses_mac),
3787                                        passwd_id, feat_cap_str);
3788                 } else {
3789                         wpa_msg_global(wpa_s, MSG_INFO,
3790                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3791                                        " adv_id=%x conncap=%x"
3792                                        " adv_mac=" MACSTR
3793                                        " session=%x mac=" MACSTR
3794                                        " dev_passwd_id=%d info='%s'%s",
3795                                        MAC2STR(dev), adv_id, conncap,
3796                                        MAC2STR(adv_mac),
3797                                        ses_id, MAC2STR(ses_mac),
3798                                        passwd_id, session_info, feat_cap_str);
3799                 }
3800                 return;
3801         }
3802
3803         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
3804         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3805
3806         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
3807                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3808                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3809
3810                 if (persistent_go && !persistent_go->num_p2p_clients) {
3811                         /* remove empty persistent GO */
3812                         wpa_config_remove_network(wpa_s->conf,
3813                                                   persistent_go->id);
3814                 }
3815
3816                 wpa_msg_global(wpa_s, MSG_INFO,
3817                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3818                                " status=%d"
3819                                " adv_id=%x adv_mac=" MACSTR
3820                                " session=%x mac=" MACSTR "%s",
3821                                MAC2STR(dev), status,
3822                                adv_id, MAC2STR(adv_mac),
3823                                ses_id, MAC2STR(ses_mac), feat_cap_str);
3824                 return;
3825         }
3826
3827         /* Clean up stale persistent groups with this device */
3828         s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
3829                                     persist_ssid_size);
3830
3831         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
3832             is_zero_ether_addr(grp_mac)) {
3833                 wpa_dbg(wpa_s, MSG_ERROR,
3834                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
3835                 return;
3836         }
3837
3838         for (;;) {
3839                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
3840                 if (!stale)
3841                         break;
3842
3843                 if (s && s->ssid_len == stale->ssid_len &&
3844                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
3845                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
3846                         break;
3847
3848                 /* Remove stale persistent group */
3849                 if (stale->mode != WPAS_MODE_P2P_GO ||
3850                     stale->num_p2p_clients <= 1) {
3851                         wpa_config_remove_network(wpa_s->conf, stale->id);
3852                 } else {
3853                         size_t i;
3854
3855                         for (i = 0; i < stale->num_p2p_clients; i++) {
3856                                 if (os_memcmp(stale->p2p_client_list +
3857                                               i * ETH_ALEN,
3858                                               dev, ETH_ALEN) == 0) {
3859                                         os_memmove(stale->p2p_client_list +
3860                                                    i * ETH_ALEN,
3861                                                    stale->p2p_client_list +
3862                                                    (i + 1) * ETH_ALEN,
3863                                                    (stale->num_p2p_clients -
3864                                                     i - 1) * ETH_ALEN);
3865                                         break;
3866                                 }
3867                         }
3868                         stale->num_p2p_clients--;
3869                 }
3870                 save_config = 1;
3871         }
3872
3873         if (save_config)
3874                 p2p_config_write(wpa_s);
3875
3876         if (s) {
3877                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3878                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3879
3880                 if (persistent_go && s != persistent_go &&
3881                     !persistent_go->num_p2p_clients) {
3882                         /* remove empty persistent GO */
3883                         wpa_config_remove_network(wpa_s->conf,
3884                                                   persistent_go->id);
3885                         /* Save config */
3886                 }
3887
3888                 wpa_msg_global(wpa_s, MSG_INFO,
3889                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3890                                " status=%d"
3891                                " adv_id=%x adv_mac=" MACSTR
3892                                " session=%x mac=" MACSTR
3893                                " persist=%d%s",
3894                                MAC2STR(dev), status,
3895                                adv_id, MAC2STR(adv_mac),
3896                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
3897                 return;
3898         }
3899
3900         if (conncap == P2PS_SETUP_GROUP_OWNER) {
3901                 /*
3902                  * We need to copy the interface name. Simply saving a
3903                  * pointer isn't enough, since if we use pending_interface_name
3904                  * it will be overwritten when the group is added.
3905                  */
3906                 char go_ifname[100];
3907
3908                 go_ifname[0] = '\0';
3909                 if (!go_wpa_s) {
3910                         wpa_s->global->pending_p2ps_group = 1;
3911
3912                         if (!wpas_p2p_create_iface(wpa_s))
3913                                 os_memcpy(go_ifname, wpa_s->ifname,
3914                                           sizeof(go_ifname));
3915                         else if (wpa_s->pending_interface_name[0])
3916                                 os_memcpy(go_ifname,
3917                                           wpa_s->pending_interface_name,
3918                                           sizeof(go_ifname));
3919
3920                         if (!go_ifname[0]) {
3921                                 wpas_p2ps_prov_complete(
3922                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
3923                                         dev, adv_mac, ses_mac,
3924                                         grp_mac, adv_id, ses_id, 0, 0,
3925                                         NULL, 0, 0, 0, NULL, NULL, 0);
3926                                 return;
3927                         }
3928
3929                         /* If PD Resp complete, start up the GO */
3930                         if (response_done && persistent_go) {
3931                                 wpas_p2p_group_add_persistent(
3932                                         wpa_s, persistent_go,
3933                                         0, 0, 0, 0, 0, NULL,
3934                                         persistent_go->mode ==
3935                                         WPAS_MODE_P2P_GO ?
3936                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3937                                         0, 0);
3938                         } else if (response_done) {
3939                                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
3940                         }
3941
3942                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3943                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
3944                                           ETH_ALEN);
3945                                 wpa_s->p2ps_method_config_any = 1;
3946                         }
3947                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3948                         os_memcpy(go_ifname, go_wpa_s->ifname,
3949                                   sizeof(go_ifname));
3950
3951                         if (is_zero_ether_addr(grp_mac)) {
3952                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
3953                                         "P2P: Setting PIN-1 for ANY");
3954                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
3955                                                           "12345670", NULL, 0,
3956                                                           0);
3957                         } else {
3958                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
3959                                         "P2P: Setting PIN-1 for " MACSTR,
3960                                         MAC2STR(grp_mac));
3961                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
3962                                                           "12345670", NULL, 0,
3963                                                           0);
3964                         }
3965
3966                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
3967                         wpa_s->p2ps_method_config_any = 1;
3968                 }
3969
3970                 wpa_msg_global(wpa_s, MSG_INFO,
3971                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3972                                " status=%d conncap=%x"
3973                                " adv_id=%x adv_mac=" MACSTR
3974                                " session=%x mac=" MACSTR
3975                                " dev_passwd_id=%d go=%s%s",
3976                                MAC2STR(dev), status, conncap,
3977                                adv_id, MAC2STR(adv_mac),
3978                                ses_id, MAC2STR(ses_mac),
3979                                passwd_id, go_ifname, feat_cap_str);
3980                 return;
3981         }
3982
3983         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3984                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3985
3986         if (persistent_go && !persistent_go->num_p2p_clients) {
3987                 /* remove empty persistent GO */
3988                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
3989         }
3990
3991         if (conncap == P2PS_SETUP_CLIENT) {
3992                 wpa_msg_global(wpa_s, MSG_INFO,
3993                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3994                                " status=%d conncap=%x"
3995                                " adv_id=%x adv_mac=" MACSTR
3996                                " session=%x mac=" MACSTR
3997                                " dev_passwd_id=%d join=" MACSTR "%s",
3998                                MAC2STR(dev), status, conncap,
3999                                adv_id, MAC2STR(adv_mac),
4000                                ses_id, MAC2STR(ses_mac),
4001                                passwd_id, MAC2STR(grp_mac), feat_cap_str);
4002         } else {
4003                 wpa_msg_global(wpa_s, MSG_INFO,
4004                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4005                                " status=%d conncap=%x"
4006                                " adv_id=%x adv_mac=" MACSTR
4007                                " session=%x mac=" MACSTR
4008                                " dev_passwd_id=%d%s",
4009                                MAC2STR(dev), status, conncap,
4010                                adv_id, MAC2STR(adv_mac),
4011                                ses_id, MAC2STR(ses_mac),
4012                                passwd_id, feat_cap_str);
4013         }
4014 }
4015
4016
4017 static int _wpas_p2p_in_progress(void *ctx)
4018 {
4019         struct wpa_supplicant *wpa_s = ctx;
4020         return wpas_p2p_in_progress(wpa_s);
4021 }
4022
4023
4024 static int wpas_prov_disc_resp_cb(void *ctx)
4025 {
4026         struct wpa_supplicant *wpa_s = ctx;
4027         struct wpa_ssid *persistent_go;
4028
4029         if (!wpa_s->global->pending_p2ps_group)
4030                 return 0;
4031
4032         wpa_s->global->pending_p2ps_group = 0;
4033
4034         if (wpas_p2p_get_go_group(wpa_s))
4035                 return 0;
4036         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4037
4038         if (persistent_go) {
4039                 wpas_p2p_group_add_persistent(
4040                         wpa_s, persistent_go, 0, 0, 0, 0, 0, NULL,
4041                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4042                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4043         } else {
4044                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
4045         }
4046
4047         return 1;
4048 }
4049
4050
4051 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4052                                        unsigned int *len,
4053                                        unsigned int *freq_list)
4054 {
4055         struct wpa_supplicant *wpa_s = ctx;
4056
4057         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4058                                           WPA_IF_P2P_CLIENT, len, freq_list);
4059 }
4060
4061
4062 /**
4063  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4064  * @global: Pointer to global data from wpa_supplicant_init()
4065  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4066  * Returns: 0 on success, -1 on failure
4067  */
4068 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4069 {
4070         struct p2p_config p2p;
4071         int i;
4072
4073         if (wpa_s->conf->p2p_disabled)
4074                 return 0;
4075
4076         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4077                 return 0;
4078
4079         if (global->p2p)
4080                 return 0;
4081
4082         os_memset(&p2p, 0, sizeof(p2p));
4083         p2p.cb_ctx = wpa_s;
4084         p2p.debug_print = wpas_p2p_debug_print;
4085         p2p.p2p_scan = wpas_p2p_scan;
4086         p2p.send_action = wpas_send_action;
4087         p2p.send_action_done = wpas_send_action_done;
4088         p2p.go_neg_completed = wpas_go_neg_completed;
4089         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4090         p2p.dev_found = wpas_dev_found;
4091         p2p.dev_lost = wpas_dev_lost;
4092         p2p.find_stopped = wpas_find_stopped;
4093         p2p.start_listen = wpas_start_listen;
4094         p2p.stop_listen = wpas_stop_listen;
4095         p2p.send_probe_resp = wpas_send_probe_resp;
4096         p2p.sd_request = wpas_sd_request;
4097         p2p.sd_response = wpas_sd_response;
4098         p2p.prov_disc_req = wpas_prov_disc_req;
4099         p2p.prov_disc_resp = wpas_prov_disc_resp;
4100         p2p.prov_disc_fail = wpas_prov_disc_fail;
4101         p2p.invitation_process = wpas_invitation_process;
4102         p2p.invitation_received = wpas_invitation_received;
4103         p2p.invitation_result = wpas_invitation_result;
4104         p2p.get_noa = wpas_get_noa;
4105         p2p.go_connected = wpas_go_connected;
4106         p2p.presence_resp = wpas_presence_resp;
4107         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4108         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4109         p2p.get_persistent_group = wpas_get_persistent_group;
4110         p2p.get_go_info = wpas_get_go_info;
4111         p2p.remove_stale_groups = wpas_remove_stale_groups;
4112         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4113         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4114         p2p.p2ps_group_capability = p2ps_group_capability;
4115         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4116
4117         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4118         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4119         p2p.dev_name = wpa_s->conf->device_name;
4120         p2p.manufacturer = wpa_s->conf->manufacturer;
4121         p2p.model_name = wpa_s->conf->model_name;
4122         p2p.model_number = wpa_s->conf->model_number;
4123         p2p.serial_number = wpa_s->conf->serial_number;
4124         if (wpa_s->wps) {
4125                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4126                 p2p.config_methods = wpa_s->wps->config_methods;
4127         }
4128
4129         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4130                 wpa_printf(MSG_ERROR,
4131                            "P2P: Failed to configure supported channel list");
4132                 return -1;
4133         }
4134
4135         if (wpa_s->conf->p2p_listen_reg_class &&
4136             wpa_s->conf->p2p_listen_channel) {
4137                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4138                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4139                 p2p.channel_forced = 1;
4140         } else {
4141                 /*
4142                  * Pick one of the social channels randomly as the listen
4143                  * channel.
4144                  */
4145                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4146                                                  &p2p.channel) != 0) {
4147                         wpa_printf(MSG_INFO,
4148                                    "P2P: No social channels supported by the driver - do not enable P2P");
4149                         return 0;
4150                 }
4151                 p2p.channel_forced = 0;
4152         }
4153         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4154                    p2p.reg_class, p2p.channel);
4155
4156         if (wpa_s->conf->p2p_oper_reg_class &&
4157             wpa_s->conf->p2p_oper_channel) {
4158                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4159                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4160                 p2p.cfg_op_channel = 1;
4161                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4162                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4163
4164         } else {
4165                 /*
4166                  * Use random operation channel from 2.4 GHz band social
4167                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4168                  * other preference is indicated.
4169                  */
4170                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4171                                                  &p2p.op_channel) != 0) {
4172                         wpa_printf(MSG_ERROR,
4173                                    "P2P: Failed to select random social channel as operation channel");
4174                         return -1;
4175                 }
4176                 p2p.cfg_op_channel = 0;
4177                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4178                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4179         }
4180
4181         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4182                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4183                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4184         }
4185
4186         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4187                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4188                 p2p.country[2] = 0x04;
4189         } else
4190                 os_memcpy(p2p.country, "XX\x04", 3);
4191
4192         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4193                   WPS_DEV_TYPE_LEN);
4194
4195         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4196         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4197                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4198
4199         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4200                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4201
4202         p2p.max_peers = 100;
4203
4204         if (wpa_s->conf->p2p_ssid_postfix) {
4205                 p2p.ssid_postfix_len =
4206                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4207                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4208                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4209                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4210                           p2p.ssid_postfix_len);
4211         }
4212
4213         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4214
4215         p2p.max_listen = wpa_s->max_remain_on_chan;
4216
4217         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4218             wpa_s->conf->p2p_passphrase_len <= 63)
4219                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4220         else
4221                 p2p.passphrase_len = 8;
4222
4223         global->p2p = p2p_init(&p2p);
4224         if (global->p2p == NULL)
4225                 return -1;
4226         global->p2p_init_wpa_s = wpa_s;
4227
4228         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4229                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4230                         continue;
4231                 p2p_add_wps_vendor_extension(
4232                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4233         }
4234
4235         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4236
4237         return 0;
4238 }
4239
4240
4241 /**
4242  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4243  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4244  *
4245  * This function deinitialize per-interface P2P data.
4246  */
4247 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4248 {
4249         if (wpa_s->driver && wpa_s->drv_priv)
4250                 wpa_drv_probe_req_report(wpa_s, 0);
4251
4252         if (wpa_s->go_params) {
4253                 /* Clear any stored provisioning info */
4254                 p2p_clear_provisioning_info(
4255                         wpa_s->global->p2p,
4256                         wpa_s->go_params->peer_device_addr);
4257         }
4258
4259         os_free(wpa_s->go_params);
4260         wpa_s->go_params = NULL;
4261         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4262         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4263         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4264         wpa_s->p2p_long_listen = 0;
4265         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4266         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4267         wpas_p2p_remove_pending_group_interface(wpa_s);
4268         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4269         wpas_p2p_listen_work_done(wpa_s);
4270         if (wpa_s->p2p_send_action_work) {
4271                 os_free(wpa_s->p2p_send_action_work->ctx);
4272                 radio_work_done(wpa_s->p2p_send_action_work);
4273                 wpa_s->p2p_send_action_work = NULL;
4274         }
4275         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4276
4277         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4278         wpa_s->p2p_oob_dev_pw = NULL;
4279
4280         os_free(wpa_s->p2p_group_common_freqs);
4281         wpa_s->p2p_group_common_freqs = NULL;
4282         wpa_s->p2p_group_common_freqs_num = 0;
4283
4284         /* TODO: remove group interface from the driver if this wpa_s instance
4285          * is on top of a P2P group interface */
4286 }
4287
4288
4289 /**
4290  * wpas_p2p_deinit_global - Deinitialize global P2P module
4291  * @global: Pointer to global data from wpa_supplicant_init()
4292  *
4293  * This function deinitializes the global (per device) P2P module.
4294  */
4295 static void wpas_p2p_deinit_global(struct wpa_global *global)
4296 {
4297         struct wpa_supplicant *wpa_s, *tmp;
4298
4299         wpa_s = global->ifaces;
4300
4301         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4302
4303         /* Remove remaining P2P group interfaces */
4304         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4305                 wpa_s = wpa_s->next;
4306         while (wpa_s) {
4307                 tmp = global->ifaces;
4308                 while (tmp &&
4309                        (tmp == wpa_s ||
4310                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4311                         tmp = tmp->next;
4312                 }
4313                 if (tmp == NULL)
4314                         break;
4315                 /* Disconnect from the P2P group and deinit the interface */
4316                 wpas_p2p_disconnect(tmp);
4317         }
4318
4319         /*
4320          * Deinit GO data on any possibly remaining interface (if main
4321          * interface is used as GO).
4322          */
4323         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4324                 if (wpa_s->ap_iface)
4325                         wpas_p2p_group_deinit(wpa_s);
4326         }
4327
4328         p2p_deinit(global->p2p);
4329         global->p2p = NULL;
4330         global->p2p_init_wpa_s = NULL;
4331 }
4332
4333
4334 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4335 {
4336         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4337             wpa_s->conf->p2p_no_group_iface)
4338                 return 0; /* separate interface disabled per configuration */
4339         if (wpa_s->drv_flags &
4340             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4341              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4342                 return 1; /* P2P group requires a new interface in every case
4343                            */
4344         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4345                 return 0; /* driver does not support concurrent operations */
4346         if (wpa_s->global->ifaces->next)
4347                 return 1; /* more that one interface already in use */
4348         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4349                 return 1; /* this interface is already in use */
4350         return 0;
4351 }
4352
4353
4354 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4355                                  const u8 *peer_addr,
4356                                  enum p2p_wps_method wps_method,
4357                                  int go_intent, const u8 *own_interface_addr,
4358                                  unsigned int force_freq, int persistent_group,
4359                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4360 {
4361         if (persistent_group && wpa_s->conf->persistent_reconnect)
4362                 persistent_group = 2;
4363
4364         /*
4365          * Increase GO config timeout if HT40 is used since it takes some time
4366          * to scan channels for coex purposes before the BSS can be started.
4367          */
4368         p2p_set_config_timeout(wpa_s->global->p2p,
4369                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4370
4371         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4372                            go_intent, own_interface_addr, force_freq,
4373                            persistent_group, ssid ? ssid->ssid : NULL,
4374                            ssid ? ssid->ssid_len : 0,
4375                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4376                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4377                            0);
4378 }
4379
4380
4381 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4382                                 const u8 *peer_addr,
4383                                 enum p2p_wps_method wps_method,
4384                                 int go_intent, const u8 *own_interface_addr,
4385                                 unsigned int force_freq, int persistent_group,
4386                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4387 {
4388         if (persistent_group && wpa_s->conf->persistent_reconnect)
4389                 persistent_group = 2;
4390
4391         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4392                              go_intent, own_interface_addr, force_freq,
4393                              persistent_group, ssid ? ssid->ssid : NULL,
4394                              ssid ? ssid->ssid_len : 0, pref_freq,
4395                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4396                              0);
4397 }
4398
4399
4400 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4401 {
4402         wpa_s->p2p_join_scan_count++;
4403         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4404                    wpa_s->p2p_join_scan_count);
4405         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4406                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4407                            " for join operationg - stop join attempt",
4408                            MAC2STR(wpa_s->pending_join_iface_addr));
4409                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4410                 if (wpa_s->p2p_auto_pd) {
4411                         wpa_s->p2p_auto_pd = 0;
4412                         wpa_msg_global(wpa_s, MSG_INFO,
4413                                        P2P_EVENT_PROV_DISC_FAILURE
4414                                        " p2p_dev_addr=" MACSTR " status=N/A",
4415                                        MAC2STR(wpa_s->pending_join_dev_addr));
4416                         return;
4417                 }
4418                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4419                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4420                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4421         }
4422 }
4423
4424
4425 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4426 {
4427         int res;
4428         unsigned int num, i;
4429         struct wpa_used_freq_data *freqs;
4430
4431         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4432                 /* Multiple channels are supported and not all are in use */
4433                 return 0;
4434         }
4435
4436         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4437                           sizeof(struct wpa_used_freq_data));
4438         if (!freqs)
4439                 return 1;
4440
4441         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4442                                         wpa_s->num_multichan_concurrent);
4443
4444         for (i = 0; i < num; i++) {
4445                 if (freqs[i].freq == freq) {
4446                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4447                                    freq);
4448                         res = 0;
4449                         goto exit_free;
4450                 }
4451         }
4452
4453         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4454         res = 1;
4455
4456 exit_free:
4457         os_free(freqs);
4458         return res;
4459 }
4460
4461
4462 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4463                             const u8 *peer_dev_addr)
4464 {
4465         struct wpa_bss *bss;
4466         int updated;
4467
4468         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4469         if (bss == NULL)
4470                 return -1;
4471         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4472                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4473                            "last scan");
4474                 return 0;
4475         }
4476
4477         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4478                                     &bss->last_update);
4479         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4480                    "%ld.%06ld (%supdated in last scan)",
4481                    bss->last_update.sec, bss->last_update.usec,
4482                    updated ? "": "not ");
4483
4484         return updated;
4485 }
4486
4487
4488 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4489                                    struct wpa_scan_results *scan_res)
4490 {
4491         struct wpa_bss *bss = NULL;
4492         int freq;
4493         u8 iface_addr[ETH_ALEN];
4494
4495         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4496
4497         if (wpa_s->global->p2p_disabled)
4498                 return;
4499
4500         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4501                    scan_res ? (int) scan_res->num : -1,
4502                    wpa_s->p2p_auto_join ? "auto_" : "");
4503
4504         if (scan_res)
4505                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4506
4507         if (wpa_s->p2p_auto_pd) {
4508                 int join = wpas_p2p_peer_go(wpa_s,
4509                                             wpa_s->pending_join_dev_addr);
4510                 if (join == 0 &&
4511                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4512                         wpa_s->auto_pd_scan_retry++;
4513                         bss = wpa_bss_get_bssid_latest(
4514                                 wpa_s, wpa_s->pending_join_dev_addr);
4515                         if (bss) {
4516                                 freq = bss->freq;
4517                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4518                                            "the peer " MACSTR " at %d MHz",
4519                                            wpa_s->auto_pd_scan_retry,
4520                                            MAC2STR(wpa_s->
4521                                                    pending_join_dev_addr),
4522                                            freq);
4523                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4524                                 return;
4525                         }
4526                 }
4527
4528                 if (join < 0)
4529                         join = 0;
4530
4531                 wpa_s->p2p_auto_pd = 0;
4532                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4533                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4534                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4535                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4536                                       wpa_s->pending_join_dev_addr, NULL,
4537                                       wpa_s->pending_pd_config_methods, join,
4538                                       0, wpa_s->user_initiated_pd) < 0) {
4539                         wpa_s->p2p_auto_pd = 0;
4540                         wpa_msg_global(wpa_s, MSG_INFO,
4541                                        P2P_EVENT_PROV_DISC_FAILURE
4542                                        " p2p_dev_addr=" MACSTR " status=N/A",
4543                                        MAC2STR(wpa_s->pending_join_dev_addr));
4544                 }
4545                 return;
4546         }
4547
4548         if (wpa_s->p2p_auto_join) {
4549                 int join = wpas_p2p_peer_go(wpa_s,
4550                                             wpa_s->pending_join_dev_addr);
4551                 if (join < 0) {
4552                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4553                                    "running a GO -> use GO Negotiation");
4554                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4555                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4556                                        "reason=peer-not-running-GO");
4557                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4558                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4559                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4560                                          wpa_s->p2p_go_intent,
4561                                          wpa_s->p2p_connect_freq,
4562                                          wpa_s->p2p_persistent_id,
4563                                          wpa_s->p2p_pd_before_go_neg,
4564                                          wpa_s->p2p_go_ht40,
4565                                          wpa_s->p2p_go_vht);
4566                         return;
4567                 }
4568
4569                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4570                            "try to join the group", join ? "" :
4571                            " in older scan");
4572                 if (!join) {
4573                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4574                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4575                         wpa_s->p2p_fallback_to_go_neg = 1;
4576                 }
4577         }
4578
4579         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4580                                  wpa_s->pending_join_iface_addr);
4581         if (freq < 0 &&
4582             p2p_get_interface_addr(wpa_s->global->p2p,
4583                                    wpa_s->pending_join_dev_addr,
4584                                    iface_addr) == 0 &&
4585             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4586             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4587                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4588                            "address for join from " MACSTR " to " MACSTR
4589                            " based on newly discovered P2P peer entry",
4590                            MAC2STR(wpa_s->pending_join_iface_addr),
4591                            MAC2STR(iface_addr));
4592                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4593                           ETH_ALEN);
4594
4595                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4596                                          wpa_s->pending_join_iface_addr);
4597         }
4598         if (freq >= 0) {
4599                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4600                            "from P2P peer table: %d MHz", freq);
4601         }
4602         if (wpa_s->p2p_join_ssid_len) {
4603                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4604                            MACSTR " and SSID %s",
4605                            MAC2STR(wpa_s->pending_join_iface_addr),
4606                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4607                                         wpa_s->p2p_join_ssid_len));
4608                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4609                                   wpa_s->p2p_join_ssid,
4610                                   wpa_s->p2p_join_ssid_len);
4611         }
4612         if (!bss) {
4613                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4614                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4615                 bss = wpa_bss_get_bssid_latest(wpa_s,
4616                                                wpa_s->pending_join_iface_addr);
4617         }
4618         if (bss) {
4619                 u8 dev_addr[ETH_ALEN];
4620
4621                 freq = bss->freq;
4622                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4623                            "from BSS table: %d MHz (SSID %s)", freq,
4624                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4625                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4626                                        dev_addr) == 0 &&
4627                     os_memcmp(wpa_s->pending_join_dev_addr,
4628                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4629                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4630                               ETH_ALEN) != 0) {
4631                         wpa_printf(MSG_DEBUG,
4632                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4633                                    MAC2STR(dev_addr),
4634                                    MAC2STR(wpa_s->pending_join_dev_addr));
4635                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4636                                   ETH_ALEN);
4637                 }
4638         }
4639         if (freq > 0) {
4640                 u16 method;
4641
4642                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4643                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4644                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4645                                        "reason=FREQ_CONFLICT");
4646                         wpas_notify_p2p_group_formation_failure(
4647                                 wpa_s, "FREQ_CONFLICT");
4648                         return;
4649                 }
4650
4651                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4652                            "prior to joining an existing group (GO " MACSTR
4653                            " freq=%u MHz)",
4654                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4655                 wpa_s->pending_pd_before_join = 1;
4656
4657                 switch (wpa_s->pending_join_wps_method) {
4658                 case WPS_PIN_DISPLAY:
4659                         method = WPS_CONFIG_KEYPAD;
4660                         break;
4661                 case WPS_PIN_KEYPAD:
4662                         method = WPS_CONFIG_DISPLAY;
4663                         break;
4664                 case WPS_PBC:
4665                         method = WPS_CONFIG_PUSHBUTTON;
4666                         break;
4667                 case WPS_P2PS:
4668                         method = WPS_CONFIG_P2PS;
4669                         break;
4670                 default:
4671                         method = 0;
4672                         break;
4673                 }
4674
4675                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4676                                                wpa_s->pending_join_dev_addr) ==
4677                      method)) {
4678                         /*
4679                          * We have already performed provision discovery for
4680                          * joining the group. Proceed directly to join
4681                          * operation without duplicated provision discovery. */
4682                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4683                                    "with " MACSTR " already done - proceed to "
4684                                    "join",
4685                                    MAC2STR(wpa_s->pending_join_dev_addr));
4686                         wpa_s->pending_pd_before_join = 0;
4687                         goto start;
4688                 }
4689
4690                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4691                                       wpa_s->pending_join_dev_addr,
4692                                       NULL, method, 1,
4693                                       freq, wpa_s->user_initiated_pd) < 0) {
4694                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4695                                    "Discovery Request before joining an "
4696                                    "existing group");
4697                         wpa_s->pending_pd_before_join = 0;
4698                         goto start;
4699                 }
4700                 return;
4701         }
4702
4703         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4704         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4705         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4706         wpas_p2p_check_join_scan_limit(wpa_s);
4707         return;
4708
4709 start:
4710         /* Start join operation immediately */
4711         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4712 }
4713
4714
4715 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4716                                    const u8 *ssid, size_t ssid_len)
4717 {
4718         int ret;
4719         struct wpa_driver_scan_params params;
4720         struct wpabuf *wps_ie, *ies;
4721         size_t ielen;
4722         int freqs[2] = { 0, 0 };
4723
4724         os_memset(&params, 0, sizeof(params));
4725
4726         /* P2P Wildcard SSID */
4727         params.num_ssids = 1;
4728         if (ssid && ssid_len) {
4729                 params.ssids[0].ssid = ssid;
4730                 params.ssids[0].ssid_len = ssid_len;
4731                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4732                 wpa_s->p2p_join_ssid_len = ssid_len;
4733         } else {
4734                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4735                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4736                 wpa_s->p2p_join_ssid_len = 0;
4737         }
4738
4739         wpa_s->wps->dev.p2p = 1;
4740         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4741                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4742                                         NULL);
4743         if (wps_ie == NULL) {
4744                 wpas_p2p_scan_res_join(wpa_s, NULL);
4745                 return;
4746         }
4747
4748         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4749         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4750         if (ies == NULL) {
4751                 wpabuf_free(wps_ie);
4752                 wpas_p2p_scan_res_join(wpa_s, NULL);
4753                 return;
4754         }
4755         wpabuf_put_buf(ies, wps_ie);
4756         wpabuf_free(wps_ie);
4757
4758         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4759
4760         params.p2p_probe = 1;
4761         params.extra_ies = wpabuf_head(ies);
4762         params.extra_ies_len = wpabuf_len(ies);
4763
4764         if (!freq) {
4765                 int oper_freq;
4766                 /*
4767                  * If freq is not provided, check the operating freq of the GO
4768                  * and use a single channel scan on if possible.
4769                  */
4770                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4771                                               wpa_s->pending_join_iface_addr);
4772                 if (oper_freq > 0)
4773                         freq = oper_freq;
4774         }
4775         if (freq > 0) {
4776                 freqs[0] = freq;
4777                 params.freqs = freqs;
4778         }
4779
4780         /*
4781          * Run a scan to update BSS table and start Provision Discovery once
4782          * the new scan results become available.
4783          */
4784         ret = wpa_drv_scan(wpa_s, &params);
4785         if (!ret) {
4786                 os_get_reltime(&wpa_s->scan_trigger_time);
4787                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4788                 wpa_s->own_scan_requested = 1;
4789         }
4790
4791         wpabuf_free(ies);
4792
4793         if (ret) {
4794                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4795                            "try again later");
4796                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4797                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4798                 wpas_p2p_check_join_scan_limit(wpa_s);
4799         }
4800 }
4801
4802
4803 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4804 {
4805         struct wpa_supplicant *wpa_s = eloop_ctx;
4806         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4807 }
4808
4809
4810 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4811                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4812                          int auto_join, int op_freq,
4813                          const u8 *ssid, size_t ssid_len)
4814 {
4815         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4816                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4817                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4818                    auto_join ? " (auto_join)" : "");
4819         if (ssid && ssid_len) {
4820                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4821                            wpa_ssid_txt(ssid, ssid_len));
4822         }
4823
4824         wpa_s->p2p_auto_pd = 0;
4825         wpa_s->p2p_auto_join = !!auto_join;
4826         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4827         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4828         wpa_s->pending_join_wps_method = wps_method;
4829
4830         /* Make sure we are not running find during connection establishment */
4831         wpas_p2p_stop_find(wpa_s);
4832
4833         wpa_s->p2p_join_scan_count = 0;
4834         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4835         return 0;
4836 }
4837
4838
4839 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4840                                const u8 *ssid, size_t ssid_len)
4841 {
4842         struct wpa_supplicant *group;
4843         struct p2p_go_neg_results res;
4844         struct wpa_bss *bss;
4845
4846         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4847         if (group == NULL)
4848                 return -1;
4849         if (group != wpa_s) {
4850                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4851                           sizeof(group->p2p_pin));
4852                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4853         } else {
4854                 /*
4855                  * Need to mark the current interface for p2p_group_formation
4856                  * when a separate group interface is not used. This is needed
4857                  * to allow p2p_cancel stop a pending p2p_connect-join.
4858                  * wpas_p2p_init_group_interface() addresses this for the case
4859                  * where a separate group interface is used.
4860                  */
4861                 wpa_s->global->p2p_group_formation = wpa_s;
4862         }
4863
4864         group->p2p_in_provisioning = 1;
4865         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4866
4867         os_memset(&res, 0, sizeof(res));
4868         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4869         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4870                   ETH_ALEN);
4871         res.wps_method = wpa_s->pending_join_wps_method;
4872         if (freq && ssid && ssid_len) {
4873                 res.freq = freq;
4874                 res.ssid_len = ssid_len;
4875                 os_memcpy(res.ssid, ssid, ssid_len);
4876         } else {
4877                 bss = wpa_bss_get_bssid_latest(wpa_s,
4878                                                wpa_s->pending_join_iface_addr);
4879                 if (bss) {
4880                         res.freq = bss->freq;
4881                         res.ssid_len = bss->ssid_len;
4882                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4883                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4884                                    bss->freq,
4885                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
4886                 }
4887         }
4888
4889         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4890                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4891                            "starting client");
4892                 wpa_drv_cancel_remain_on_channel(wpa_s);
4893                 wpa_s->off_channel_freq = 0;
4894                 wpa_s->roc_waiting_drv_freq = 0;
4895         }
4896         wpas_start_wps_enrollee(group, &res);
4897
4898         /*
4899          * Allow a longer timeout for join-a-running-group than normal 15
4900          * second group formation timeout since the GO may not have authorized
4901          * our connection yet.
4902          */
4903         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4904         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4905                                wpa_s, NULL);
4906
4907         return 0;
4908 }
4909
4910
4911 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4912                                 int *force_freq, int *pref_freq, int go,
4913                                 unsigned int *pref_freq_list,
4914                                 unsigned int *num_pref_freq)
4915 {
4916         struct wpa_used_freq_data *freqs;
4917         int res, best_freq, num_unused;
4918         unsigned int freq_in_use = 0, num, i, max_pref_freq;
4919
4920         max_pref_freq = *num_pref_freq;
4921         *num_pref_freq = 0;
4922
4923         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4924                           sizeof(struct wpa_used_freq_data));
4925         if (!freqs)
4926                 return -1;
4927
4928         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4929                                         wpa_s->num_multichan_concurrent);
4930
4931         /*
4932          * It is possible that the total number of used frequencies is bigger
4933          * than the number of frequencies used for P2P, so get the system wide
4934          * number of unused frequencies.
4935          */
4936         num_unused = wpas_p2p_num_unused_channels(wpa_s);
4937
4938         wpa_printf(MSG_DEBUG,
4939                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
4940                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
4941
4942         if (freq > 0) {
4943                 int ret;
4944                 if (go)
4945                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4946                 else
4947                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4948                 if (!ret) {
4949                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
4950                             ieee80211_is_dfs(freq)) {
4951                                 /*
4952                                  * If freq is a DFS channel and DFS is offloaded
4953                                  * to the driver, allow P2P GO to use it.
4954                                  */
4955                                 wpa_printf(MSG_DEBUG,
4956                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
4957                                            freq);
4958                         } else {
4959                                 wpa_printf(MSG_DEBUG,
4960                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
4961                                            freq);
4962                                 res = -3;
4963                                 goto exit_free;
4964                         }
4965                 }
4966
4967                 for (i = 0; i < num; i++) {
4968                         if (freqs[i].freq == freq)
4969                                 freq_in_use = 1;
4970                 }
4971
4972                 if (num_unused <= 0 && !freq_in_use) {
4973                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4974                                    freq);
4975                         res = -2;
4976                         goto exit_free;
4977                 }
4978                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4979                            "requested channel (%u MHz)", freq);
4980                 *force_freq = freq;
4981                 goto exit_ok;
4982         }
4983
4984         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
4985
4986         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
4987                 enum wpa_driver_if_type iface_type;
4988
4989                 if (go)
4990                         iface_type = WPA_IF_P2P_GO;
4991                 else
4992                         iface_type = WPA_IF_P2P_CLIENT;
4993
4994                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
4995                            best_freq, go);
4996
4997                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
4998                                                  &max_pref_freq,
4999                                                  pref_freq_list);
5000                 if (!res && max_pref_freq > 0) {
5001                         *num_pref_freq = max_pref_freq;
5002                         i = 0;
5003                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5004                                                         pref_freq_list[i]) &&
5005                                i < *num_pref_freq) {
5006                                 wpa_printf(MSG_DEBUG,
5007                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5008                                            i, pref_freq_list[i]);
5009                                 i++;
5010                         }
5011                         if (i != *num_pref_freq) {
5012                                 best_freq = pref_freq_list[i];
5013                                 wpa_printf(MSG_DEBUG,
5014                                            "P2P: Using preferred_freq_list[%d]=%d",
5015                                            i, best_freq);
5016                         } else {
5017                                 wpa_printf(MSG_DEBUG,
5018                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5019                                 *num_pref_freq = 0;
5020                         }
5021                 } else {
5022                         wpa_printf(MSG_DEBUG,
5023                                    "P2P: No preferred frequency list available");
5024                 }
5025         }
5026
5027         /* We have a candidate frequency to use */
5028         if (best_freq > 0) {
5029                 if (*pref_freq == 0 && num_unused > 0) {
5030                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5031                                    best_freq);
5032                         *pref_freq = best_freq;
5033                 } else {
5034                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5035                                    best_freq);
5036                         *force_freq = best_freq;
5037                 }
5038         } else if (num_unused > 0) {
5039                 wpa_printf(MSG_DEBUG,
5040                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5041                 *force_freq = 0;
5042         } else {
5043                 wpa_printf(MSG_DEBUG,
5044                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5045                 res = -2;
5046                 goto exit_free;
5047         }
5048
5049 exit_ok:
5050         res = 0;
5051 exit_free:
5052         os_free(freqs);
5053         return res;
5054 }
5055
5056
5057 /**
5058  * wpas_p2p_connect - Request P2P Group Formation to be started
5059  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5060  * @peer_addr: Address of the peer P2P Device
5061  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5062  * @persistent_group: Whether to create a persistent group
5063  * @auto_join: Whether to select join vs. GO Negotiation automatically
5064  * @join: Whether to join an existing group (as a client) instead of starting
5065  *      Group Owner negotiation; @peer_addr is BSSID in that case
5066  * @auth: Whether to only authorize the connection instead of doing that and
5067  *      initiating Group Owner negotiation
5068  * @go_intent: GO Intent or -1 to use default
5069  * @freq: Frequency for the group or 0 for auto-selection
5070  * @persistent_id: Persistent group credentials to use for forcing GO
5071  *      parameters or -1 to generate new values (SSID/passphrase)
5072  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5073  *      interoperability workaround when initiating group formation
5074  * @ht40: Start GO with 40 MHz channel width
5075  * @vht:  Start GO with VHT support
5076  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5077  *      failure, -2 on failure due to channel not currently available,
5078  *      -3 if forced channel is not supported
5079  */
5080 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5081                      const char *pin, enum p2p_wps_method wps_method,
5082                      int persistent_group, int auto_join, int join, int auth,
5083                      int go_intent, int freq, int persistent_id, int pd,
5084                      int ht40, int vht)
5085 {
5086         int force_freq = 0, pref_freq = 0;
5087         int ret = 0, res;
5088         enum wpa_driver_if_type iftype;
5089         const u8 *if_addr;
5090         struct wpa_ssid *ssid = NULL;
5091         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5092
5093         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5094                 return -1;
5095
5096         if (persistent_id >= 0) {
5097                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5098                 if (ssid == NULL || ssid->disabled != 2 ||
5099                     ssid->mode != WPAS_MODE_P2P_GO)
5100                         return -1;
5101         }
5102
5103         os_free(wpa_s->global->add_psk);
5104         wpa_s->global->add_psk = NULL;
5105
5106         wpa_s->global->p2p_fail_on_wps_complete = 0;
5107         wpa_s->global->pending_p2ps_group = 0;
5108         wpa_s->p2ps_method_config_any = 0;
5109
5110         if (go_intent < 0)
5111                 go_intent = wpa_s->conf->p2p_go_intent;
5112
5113         if (!auth)
5114                 wpa_s->p2p_long_listen = 0;
5115
5116         wpa_s->p2p_wps_method = wps_method;
5117         wpa_s->p2p_persistent_group = !!persistent_group;
5118         wpa_s->p2p_persistent_id = persistent_id;
5119         wpa_s->p2p_go_intent = go_intent;
5120         wpa_s->p2p_connect_freq = freq;
5121         wpa_s->p2p_fallback_to_go_neg = 0;
5122         wpa_s->p2p_pd_before_go_neg = !!pd;
5123         wpa_s->p2p_go_ht40 = !!ht40;
5124         wpa_s->p2p_go_vht = !!vht;
5125
5126         if (pin)
5127                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5128         else if (wps_method == WPS_PIN_DISPLAY) {
5129                 ret = wps_generate_pin();
5130                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5131                                   "%08d", ret);
5132                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5133                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5134                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5135                            wpa_s->p2p_pin);
5136         } else
5137                 wpa_s->p2p_pin[0] = '\0';
5138
5139         if (join || auto_join) {
5140                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5141                 if (auth) {
5142                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5143                                    "connect a running group from " MACSTR,
5144                                    MAC2STR(peer_addr));
5145                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5146                         return ret;
5147                 }
5148                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5149                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5150                                            iface_addr) < 0) {
5151                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5152                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5153                                          dev_addr);
5154                 }
5155                 if (auto_join) {
5156                         os_get_reltime(&wpa_s->p2p_auto_started);
5157                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5158                                    "%ld.%06ld",
5159                                    wpa_s->p2p_auto_started.sec,
5160                                    wpa_s->p2p_auto_started.usec);
5161                 }
5162                 wpa_s->user_initiated_pd = 1;
5163                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5164                                   auto_join, freq, NULL, 0) < 0)
5165                         return -1;
5166                 return ret;
5167         }
5168
5169         size = P2P_MAX_PREF_CHANNELS;
5170         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5171                                    go_intent == 15, pref_freq_list, &size);
5172         if (res)
5173                 return res;
5174         wpas_p2p_set_own_freq_preference(wpa_s,
5175                                          force_freq ? force_freq : pref_freq);
5176
5177         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5178
5179         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5180
5181         if (wpa_s->create_p2p_iface) {
5182                 /* Prepare to add a new interface for the group */
5183                 iftype = WPA_IF_P2P_GROUP;
5184                 if (go_intent == 15)
5185                         iftype = WPA_IF_P2P_GO;
5186                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5187                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5188                                    "interface for the group");
5189                         return -1;
5190                 }
5191
5192                 if_addr = wpa_s->pending_interface_addr;
5193         } else {
5194                 if_addr = wpa_s->own_addr;
5195                 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5196         }
5197
5198         if (auth) {
5199                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5200                                          go_intent, if_addr,
5201                                          force_freq, persistent_group, ssid,
5202                                          pref_freq) < 0)
5203                         return -1;
5204                 return ret;
5205         }
5206
5207         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5208                                   go_intent, if_addr, force_freq,
5209                                   persistent_group, ssid, pref_freq) < 0) {
5210                 if (wpa_s->create_p2p_iface)
5211                         wpas_p2p_remove_pending_group_interface(wpa_s);
5212                 return -1;
5213         }
5214         return ret;
5215 }
5216
5217
5218 /**
5219  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5220  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5221  * @freq: Frequency of the channel in MHz
5222  * @duration: Duration of the stay on the channel in milliseconds
5223  *
5224  * This callback is called when the driver indicates that it has started the
5225  * requested remain-on-channel duration.
5226  */
5227 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5228                                    unsigned int freq, unsigned int duration)
5229 {
5230         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5231                 return;
5232         wpa_printf(MSG_DEBUG, "P2P: remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d roc_waiting_drv_freq=%d freq=%u duration=%u)",
5233                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5234                    wpa_s->roc_waiting_drv_freq, freq, duration);
5235         if (wpa_s->off_channel_freq &&
5236             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5237                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5238                               wpa_s->pending_listen_duration);
5239                 wpa_s->pending_listen_freq = 0;
5240         } else {
5241                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5242                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5243                            freq, duration);
5244         }
5245 }
5246
5247
5248 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5249 {
5250         /* Limit maximum Listen state time based on driver limitation. */
5251         if (timeout > wpa_s->max_remain_on_chan)
5252                 timeout = wpa_s->max_remain_on_chan;
5253
5254         return p2p_listen(wpa_s->global->p2p, timeout);
5255 }
5256
5257
5258 /**
5259  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5260  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5261  * @freq: Frequency of the channel in MHz
5262  *
5263  * This callback is called when the driver indicates that a remain-on-channel
5264  * operation has been completed, i.e., the duration on the requested channel
5265  * has timed out.
5266  */
5267 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5268                                           unsigned int freq)
5269 {
5270         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5271                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5272                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5273         wpas_p2p_listen_work_done(wpa_s);
5274         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5275                 return;
5276         if (wpa_s->p2p_long_listen > 0)
5277                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5278         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5279                 return; /* P2P module started a new operation */
5280         if (offchannel_pending_action_tx(wpa_s))
5281                 return;
5282         if (wpa_s->p2p_long_listen > 0) {
5283                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5284                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5285         } else {
5286                 /*
5287                  * When listen duration is over, stop listen & update p2p_state
5288                  * to IDLE.
5289                  */
5290                 p2p_stop_listen(wpa_s->global->p2p);
5291         }
5292 }
5293
5294
5295 /**
5296  * wpas_p2p_group_remove - Remove a P2P group
5297  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5298  * @ifname: Network interface name of the group interface or "*" to remove all
5299  *      groups
5300  * Returns: 0 on success, -1 on failure
5301  *
5302  * This function is used to remove a P2P group. This can be used to disconnect
5303  * from a group in which the local end is a P2P Client or to end a P2P Group in
5304  * case the local end is the Group Owner. If a virtual network interface was
5305  * created for this group, that interface will be removed. Otherwise, only the
5306  * configured P2P group network will be removed from the interface.
5307  */
5308 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5309 {
5310         struct wpa_global *global = wpa_s->global;
5311         struct wpa_supplicant *calling_wpa_s = wpa_s;
5312
5313         if (os_strcmp(ifname, "*") == 0) {
5314                 struct wpa_supplicant *prev;
5315                 wpa_s = global->ifaces;
5316                 while (wpa_s) {
5317                         prev = wpa_s;
5318                         wpa_s = wpa_s->next;
5319                         if (prev->p2p_group_interface !=
5320                             NOT_P2P_GROUP_INTERFACE ||
5321                             (prev->current_ssid &&
5322                              prev->current_ssid->p2p_group))
5323                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5324                 }
5325                 return 0;
5326         }
5327
5328         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5329                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5330                         break;
5331         }
5332
5333         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5334 }
5335
5336
5337 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5338 {
5339         unsigned int r;
5340
5341         if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5342                 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5343                 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5344                 int res;
5345
5346                 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5347                                                  &size, pref_freq_list);
5348                 if (!res && size > 0) {
5349                         i = 0;
5350                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5351                                                         pref_freq_list[i]) &&
5352                                i < size) {
5353                                 wpa_printf(MSG_DEBUG,
5354                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5355                                            i, pref_freq_list[i]);
5356                                 i++;
5357                         }
5358                         if (i != size) {
5359                                 freq = pref_freq_list[i];
5360                                 wpa_printf(MSG_DEBUG,
5361                                            "P2P: Using preferred_freq_list[%d]=%d",
5362                                            i, freq);
5363                         } else {
5364                                 wpa_printf(MSG_DEBUG,
5365                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5366                         }
5367                 } else {
5368                         wpa_printf(MSG_DEBUG,
5369                                    "P2P: No preferred frequency list available");
5370                 }
5371         }
5372
5373         if (freq == 2) {
5374                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5375                            "band");
5376                 if (wpa_s->best_24_freq > 0 &&
5377                     p2p_supported_freq_go(wpa_s->global->p2p,
5378                                           wpa_s->best_24_freq)) {
5379                         freq = wpa_s->best_24_freq;
5380                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5381                                    "channel: %d MHz", freq);
5382                 } else {
5383                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5384                                 return -1;
5385                         freq = 2412 + (r % 3) * 25;
5386                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5387                                    "channel: %d MHz", freq);
5388                 }
5389         }
5390
5391         if (freq == 5) {
5392                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5393                            "band");
5394                 if (wpa_s->best_5_freq > 0 &&
5395                     p2p_supported_freq_go(wpa_s->global->p2p,
5396                                        wpa_s->best_5_freq)) {
5397                         freq = wpa_s->best_5_freq;
5398                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5399                                    "channel: %d MHz", freq);
5400                 } else {
5401                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5402                                 return -1;
5403                         freq = 5180 + (r % 4) * 20;
5404                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5405                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5406                                            "5 GHz channel for P2P group");
5407                                 return -1;
5408                         }
5409                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5410                                    "channel: %d MHz", freq);
5411                 }
5412         }
5413
5414         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5415                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5416                     ieee80211_is_dfs(freq)) {
5417                         /*
5418                          * If freq is a DFS channel and DFS is offloaded to the
5419                          * driver, allow P2P GO to use it.
5420                          */
5421                         wpa_printf(MSG_DEBUG, "P2P: "
5422                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5423                                    __func__, freq);
5424                         return freq;
5425                 }
5426                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5427                            "(%u MHz) is not supported for P2P uses",
5428                            freq);
5429                 return -1;
5430         }
5431
5432         return freq;
5433 }
5434
5435
5436 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5437                                       const struct p2p_channels *channels,
5438                                       int freq)
5439 {
5440         if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5441             p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5442             freq_included(wpa_s, channels, freq))
5443                 return 1;
5444         return 0;
5445 }
5446
5447
5448 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5449                                             struct p2p_go_neg_results *params,
5450                                             const struct p2p_channels *channels)
5451 {
5452         unsigned int i, r;
5453
5454         /* first try some random selection of the social channels */
5455         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5456                 return;
5457
5458         for (i = 0; i < 3; i++) {
5459                 params->freq = 2412 + ((r + i) % 3) * 25;
5460                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5461                         goto out;
5462         }
5463
5464         /* try all other channels in operating class 81 */
5465         for (i = 0; i < 11; i++) {
5466                 params->freq = 2412 + i * 5;
5467
5468                 /* skip social channels; covered in the previous loop */
5469                 if (params->freq == 2412 ||
5470                     params->freq == 2437 ||
5471                     params->freq == 2462)
5472                         continue;
5473
5474                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5475                         goto out;
5476         }
5477
5478         /* try all channels in operating class 115 */
5479         for (i = 0; i < 4; i++) {
5480                 params->freq = 5180 + i * 20;
5481                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5482                     freq_included(wpa_s, channels, params->freq) &&
5483                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5484                         goto out;
5485         }
5486
5487         /* try all channels in operating class 124 */
5488         for (i = 0; i < 4; i++) {
5489                 params->freq = 5745 + i * 20;
5490                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5491                     freq_included(wpa_s, channels, params->freq) &&
5492                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5493                         goto out;
5494         }
5495
5496         /* try social channel class 180 channel 2 */
5497         params->freq = 58320 + 1 * 2160;
5498         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5499             freq_included(wpa_s, channels, params->freq) &&
5500             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5501                 goto out;
5502
5503         /* try all channels in reg. class 180 */
5504         for (i = 0; i < 4; i++) {
5505                 params->freq = 58320 + i * 2160;
5506                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5507                     freq_included(wpa_s, channels, params->freq) &&
5508                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5509                         goto out;
5510         }
5511
5512         params->freq = 0;
5513         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5514         return;
5515 out:
5516         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5517                    params->freq);
5518 }
5519
5520
5521 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5522                                    struct p2p_go_neg_results *params,
5523                                    int freq, int ht40, int vht,
5524                                    const struct p2p_channels *channels)
5525 {
5526         struct wpa_used_freq_data *freqs;
5527         unsigned int cand;
5528         unsigned int num, i;
5529
5530         os_memset(params, 0, sizeof(*params));
5531         params->role_go = 1;
5532         params->ht40 = ht40;
5533         params->vht = vht;
5534
5535         if (wpa_s->p2p_group_common_freqs_num)
5536                 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5537                            __func__);
5538
5539         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5540                           sizeof(struct wpa_used_freq_data));
5541         if (!freqs)
5542                 return -1;
5543
5544         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5545                                         wpa_s->num_multichan_concurrent);
5546
5547         /* try using the forced freq */
5548         if (freq) {
5549                 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) {
5550                         wpa_printf(MSG_DEBUG,
5551                                    "P2P: Forced GO freq %d MHz not accepted",
5552                                    freq);
5553                         goto fail;
5554                 }
5555
5556                 for (i = 0; i < num; i++) {
5557                         if (freqs[i].freq == freq) {
5558                                 wpa_printf(MSG_DEBUG,
5559                                            "P2P: forced freq (%d MHz) is also shared",
5560                                            freq);
5561                                 params->freq = freq;
5562                                 goto success;
5563                         }
5564                 }
5565
5566                 if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5567                         wpa_printf(MSG_DEBUG,
5568                                    "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5569                                    freq);
5570                         goto fail;
5571                 }
5572
5573                 wpa_printf(MSG_DEBUG,
5574                            "P2P: force GO freq (%d MHz) on a free channel",
5575                            freq);
5576                 params->freq = freq;
5577                 goto success;
5578         }
5579
5580         /* consider using one of the shared frequencies */
5581         if (num) {
5582                 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5583                 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5584                         wpa_printf(MSG_DEBUG,
5585                                    "P2P: Use shared freq (%d MHz) for GO",
5586                                    freq);
5587                         params->freq = cand;
5588                         goto success;
5589                 }
5590
5591                 /* try using one of the shared freqs */
5592                 for (i = 0; i < num; i++) {
5593                         if (wpas_p2p_supported_freq_go(wpa_s, channels,
5594                                                        freqs[i].freq)) {
5595                                 wpa_printf(MSG_DEBUG,
5596                                            "P2P: Use shared freq (%d MHz) for GO",
5597                                            freq);
5598                                 params->freq = freqs[i].freq;
5599                                 goto success;
5600                         }
5601                 }
5602         }
5603
5604         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5605                 wpa_printf(MSG_DEBUG,
5606                            "P2P: Cannot force GO on any of the channels we are already using");
5607                 goto fail;
5608         }
5609
5610         /* try using the setting from the configuration file */
5611         if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5612             wpa_s->conf->p2p_oper_channel >= 1 &&
5613             wpa_s->conf->p2p_oper_channel <= 11 &&
5614             wpas_p2p_supported_freq_go(
5615                     wpa_s, channels,
5616                     2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5617                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5618                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5619                            "frequency %d MHz", params->freq);
5620                 goto success;
5621         }
5622
5623         if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5624              wpa_s->conf->p2p_oper_reg_class == 116 ||
5625              wpa_s->conf->p2p_oper_reg_class == 117 ||
5626              wpa_s->conf->p2p_oper_reg_class == 124 ||
5627              wpa_s->conf->p2p_oper_reg_class == 125 ||
5628              wpa_s->conf->p2p_oper_reg_class == 126 ||
5629              wpa_s->conf->p2p_oper_reg_class == 127) &&
5630             wpas_p2p_supported_freq_go(wpa_s, channels,
5631                                        5000 +
5632                                        5 * wpa_s->conf->p2p_oper_channel)) {
5633                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5634                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5635                            "frequency %d MHz", params->freq);
5636                 goto success;
5637         }
5638
5639         /* Try using best channels */
5640         if (wpa_s->conf->p2p_oper_channel == 0 &&
5641             wpa_s->best_overall_freq > 0 &&
5642             wpas_p2p_supported_freq_go(wpa_s, channels,
5643                                        wpa_s->best_overall_freq)) {
5644                 params->freq = wpa_s->best_overall_freq;
5645                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5646                            "channel %d MHz", params->freq);
5647                 goto success;
5648         }
5649
5650         if (wpa_s->conf->p2p_oper_channel == 0 &&
5651             wpa_s->best_24_freq > 0 &&
5652             wpas_p2p_supported_freq_go(wpa_s, channels,
5653                                        wpa_s->best_24_freq)) {
5654                 params->freq = wpa_s->best_24_freq;
5655                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5656                            "channel %d MHz", params->freq);
5657                 goto success;
5658         }
5659
5660         if (wpa_s->conf->p2p_oper_channel == 0 &&
5661             wpa_s->best_5_freq > 0 &&
5662             wpas_p2p_supported_freq_go(wpa_s, channels,
5663                                        wpa_s->best_5_freq)) {
5664                 params->freq = wpa_s->best_5_freq;
5665                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5666                            "channel %d MHz", params->freq);
5667                 goto success;
5668         }
5669
5670         /* try using preferred channels */
5671         cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
5672         if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5673                 params->freq = cand;
5674                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5675                            "channels", params->freq);
5676                 goto success;
5677         }
5678
5679         /* Try using one of the group common freqs */
5680         if (wpa_s->p2p_group_common_freqs) {
5681                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
5682                         cand = wpa_s->p2p_group_common_freqs[i];
5683                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5684                                 params->freq = cand;
5685                                 wpa_printf(MSG_DEBUG,
5686                                            "P2P: Use freq %d MHz common with the peer",
5687                                            params->freq);
5688                                 goto success;
5689                         }
5690                 }
5691         }
5692
5693         /* no preference, select some channel */
5694         wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
5695
5696         if (params->freq == 0) {
5697                 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
5698                 goto fail;
5699         }
5700
5701 success:
5702         os_free(freqs);
5703         return 0;
5704 fail:
5705         os_free(freqs);
5706         return -1;
5707 }
5708
5709
5710 static struct wpa_supplicant *
5711 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5712                          int go)
5713 {
5714         struct wpa_supplicant *group_wpa_s;
5715
5716         if (!wpas_p2p_create_iface(wpa_s)) {
5717                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5718                         "operations");
5719                 wpa_s->p2p_first_connection_timeout = 0;
5720                 return wpa_s;
5721         }
5722
5723         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5724                                          WPA_IF_P2P_CLIENT) < 0) {
5725                 wpa_msg_global(wpa_s, MSG_ERROR,
5726                                "P2P: Failed to add group interface");
5727                 return NULL;
5728         }
5729         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5730         if (group_wpa_s == NULL) {
5731                 wpa_msg_global(wpa_s, MSG_ERROR,
5732                                "P2P: Failed to initialize group interface");
5733                 wpas_p2p_remove_pending_group_interface(wpa_s);
5734                 return NULL;
5735         }
5736
5737         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5738                 group_wpa_s->ifname);
5739         group_wpa_s->p2p_first_connection_timeout = 0;
5740         return group_wpa_s;
5741 }
5742
5743
5744 /**
5745  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5746  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5747  * @persistent_group: Whether to create a persistent group
5748  * @freq: Frequency for the group or 0 to indicate no hardcoding
5749  * @ht40: Start GO with 40 MHz channel width
5750  * @vht:  Start GO with VHT support
5751  * Returns: 0 on success, -1 on failure
5752  *
5753  * This function creates a new P2P group with the local end as the Group Owner,
5754  * i.e., without using Group Owner Negotiation.
5755  */
5756 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5757                        int freq, int ht40, int vht)
5758 {
5759         struct p2p_go_neg_results params;
5760
5761         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5762                 return -1;
5763
5764         os_free(wpa_s->global->add_psk);
5765         wpa_s->global->add_psk = NULL;
5766
5767         /* Make sure we are not running find during connection establishment */
5768         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5769         wpas_p2p_stop_find_oper(wpa_s);
5770
5771         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5772         if (freq < 0)
5773                 return -1;
5774
5775         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5776                 return -1;
5777         if (params.freq &&
5778             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5779                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5780                     ieee80211_is_dfs(params.freq)) {
5781                         /*
5782                          * If freq is a DFS channel and DFS is offloaded to the
5783                          * driver, allow P2P GO to use it.
5784                          */
5785                         wpa_printf(MSG_DEBUG,
5786                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
5787                                 __func__, params.freq);
5788                 } else {
5789                         wpa_printf(MSG_DEBUG,
5790                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
5791                                    params.freq);
5792                         return -1;
5793                 }
5794         }
5795         p2p_go_params(wpa_s->global->p2p, &params);
5796         params.persistent_group = persistent_group;
5797
5798         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5799         if (wpa_s == NULL)
5800                 return -1;
5801         wpas_start_wps_go(wpa_s, &params, 0);
5802
5803         return 0;
5804 }
5805
5806
5807 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5808                                  struct wpa_ssid *params, int addr_allocated,
5809                                  int freq, int force_scan)
5810 {
5811         struct wpa_ssid *ssid;
5812
5813         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5814         if (wpa_s == NULL)
5815                 return -1;
5816         if (force_scan)
5817                 os_get_reltime(&wpa_s->scan_min_time);
5818         wpa_s->p2p_last_4way_hs_fail = NULL;
5819
5820         wpa_supplicant_ap_deinit(wpa_s);
5821
5822         ssid = wpa_config_add_network(wpa_s->conf);
5823         if (ssid == NULL)
5824                 return -1;
5825         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5826         wpa_config_set_network_defaults(ssid);
5827         ssid->temporary = 1;
5828         ssid->proto = WPA_PROTO_RSN;
5829         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5830         ssid->group_cipher = WPA_CIPHER_CCMP;
5831         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5832         ssid->ssid = os_malloc(params->ssid_len);
5833         if (ssid->ssid == NULL) {
5834                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5835                 return -1;
5836         }
5837         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5838         ssid->ssid_len = params->ssid_len;
5839         ssid->p2p_group = 1;
5840         ssid->export_keys = 1;
5841         if (params->psk_set) {
5842                 os_memcpy(ssid->psk, params->psk, 32);
5843                 ssid->psk_set = 1;
5844         }
5845         if (params->passphrase)
5846                 ssid->passphrase = os_strdup(params->passphrase);
5847
5848         wpa_s->show_group_started = 1;
5849         wpa_s->p2p_in_invitation = 1;
5850         wpa_s->p2p_invite_go_freq = freq;
5851
5852         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5853                              NULL);
5854         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5855                                wpas_p2p_group_formation_timeout,
5856                                wpa_s->parent, NULL);
5857         wpa_supplicant_select_network(wpa_s, ssid);
5858
5859         return 0;
5860 }
5861
5862
5863 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5864                                   struct wpa_ssid *ssid, int addr_allocated,
5865                                   int force_freq, int neg_freq, int ht40,
5866                                   int vht, const struct p2p_channels *channels,
5867                                   int connection_timeout, int force_scan)
5868 {
5869         struct p2p_go_neg_results params;
5870         int go = 0, freq;
5871
5872         if (ssid->disabled != 2 || ssid->ssid == NULL)
5873                 return -1;
5874
5875         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5876             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5877                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5878                            "already running");
5879                 if (go == 0 &&
5880                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5881                                          wpa_s->parent, NULL)) {
5882                         /*
5883                          * This can happen if Invitation Response frame was lost
5884                          * and the peer (GO of a persistent group) tries to
5885                          * invite us again. Reschedule the timeout to avoid
5886                          * terminating the wait for the connection too early
5887                          * since we now know that the peer is still trying to
5888                          * invite us instead of having already started the GO.
5889                          */
5890                         wpa_printf(MSG_DEBUG,
5891                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
5892                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5893                                                wpas_p2p_group_formation_timeout,
5894                                                wpa_s->parent, NULL);
5895                 }
5896                 return 0;
5897         }
5898
5899         os_free(wpa_s->global->add_psk);
5900         wpa_s->global->add_psk = NULL;
5901
5902         /* Make sure we are not running find during connection establishment */
5903         wpas_p2p_stop_find_oper(wpa_s);
5904
5905         wpa_s->p2p_fallback_to_go_neg = 0;
5906
5907         if (ssid->mode == WPAS_MODE_P2P_GO) {
5908                 if (force_freq > 0) {
5909                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
5910                         if (freq < 0)
5911                                 return -1;
5912                 } else {
5913                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
5914                         if (freq < 0 ||
5915                             (freq > 0 && !freq_included(wpa_s, channels, freq)))
5916                                 freq = 0;
5917                 }
5918         } else if (ssid->mode == WPAS_MODE_INFRA) {
5919                 freq = neg_freq;
5920                 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
5921                         struct os_reltime now;
5922                         struct wpa_bss *bss =
5923                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
5924
5925                         os_get_reltime(&now);
5926                         if (bss &&
5927                             !os_reltime_expired(&now, &bss->last_update, 5) &&
5928                             freq_included(wpa_s, channels, bss->freq))
5929                                 freq = bss->freq;
5930                         else
5931                                 freq = 0;
5932                 }
5933
5934                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
5935                                              force_scan);
5936         } else {
5937                 return -1;
5938         }
5939
5940         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
5941                 return -1;
5942
5943         params.role_go = 1;
5944         params.psk_set = ssid->psk_set;
5945         if (params.psk_set)
5946                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5947         if (ssid->passphrase) {
5948                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5949                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5950                                    "persistent group");
5951                         return -1;
5952                 }
5953                 os_strlcpy(params.passphrase, ssid->passphrase,
5954                            sizeof(params.passphrase));
5955         }
5956         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5957         params.ssid_len = ssid->ssid_len;
5958         params.persistent_group = 1;
5959
5960         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5961         if (wpa_s == NULL)
5962                 return -1;
5963
5964         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
5965
5966         wpa_s->p2p_first_connection_timeout = connection_timeout;
5967         wpas_start_wps_go(wpa_s, &params, 0);
5968
5969         return 0;
5970 }
5971
5972
5973 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5974                                struct wpabuf *proberesp_ies)
5975 {
5976         struct wpa_supplicant *wpa_s = ctx;
5977         if (wpa_s->ap_iface) {
5978                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5979                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5980                         wpabuf_free(beacon_ies);
5981                         wpabuf_free(proberesp_ies);
5982                         return;
5983                 }
5984                 if (beacon_ies) {
5985                         wpabuf_free(hapd->p2p_beacon_ie);
5986                         hapd->p2p_beacon_ie = beacon_ies;
5987                 }
5988                 wpabuf_free(hapd->p2p_probe_resp_ie);
5989                 hapd->p2p_probe_resp_ie = proberesp_ies;
5990         } else {
5991                 wpabuf_free(beacon_ies);
5992                 wpabuf_free(proberesp_ies);
5993         }
5994         wpa_supplicant_ap_update_beacon(wpa_s);
5995 }
5996
5997
5998 static void wpas_p2p_idle_update(void *ctx, int idle)
5999 {
6000         struct wpa_supplicant *wpa_s = ctx;
6001         if (!wpa_s->ap_iface)
6002                 return;
6003         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6004         if (idle) {
6005                 if (wpa_s->global->p2p_fail_on_wps_complete &&
6006                     wpa_s->p2p_in_provisioning) {
6007                         wpas_p2p_grpform_fail_after_wps(wpa_s);
6008                         return;
6009                 }
6010                 wpas_p2p_set_group_idle_timeout(wpa_s);
6011         } else
6012                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6013 }
6014
6015
6016 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6017                                        struct wpa_ssid *ssid)
6018 {
6019         struct p2p_group *group;
6020         struct p2p_group_config *cfg;
6021
6022         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6023                 return NULL;
6024
6025         cfg = os_zalloc(sizeof(*cfg));
6026         if (cfg == NULL)
6027                 return NULL;
6028
6029         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6030                 cfg->persistent_group = 2;
6031         else if (ssid->p2p_persistent_group)
6032                 cfg->persistent_group = 1;
6033         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6034         if (wpa_s->max_stations &&
6035             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6036                 cfg->max_clients = wpa_s->max_stations;
6037         else
6038                 cfg->max_clients = wpa_s->conf->max_num_sta;
6039         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6040         cfg->ssid_len = ssid->ssid_len;
6041         cfg->freq = ssid->frequency;
6042         cfg->cb_ctx = wpa_s;
6043         cfg->ie_update = wpas_p2p_ie_update;
6044         cfg->idle_update = wpas_p2p_idle_update;
6045
6046         group = p2p_group_init(wpa_s->global->p2p, cfg);
6047         if (group == NULL)
6048                 os_free(cfg);
6049         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6050                 p2p_group_notif_formation_done(group);
6051         wpa_s->p2p_group = group;
6052         return group;
6053 }
6054
6055
6056 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6057                           int registrar)
6058 {
6059         struct wpa_ssid *ssid = wpa_s->current_ssid;
6060
6061         if (!wpa_s->p2p_in_provisioning) {
6062                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6063                            "provisioning not in progress");
6064                 return;
6065         }
6066
6067         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6068                 u8 go_dev_addr[ETH_ALEN];
6069                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6070                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6071                                           ssid->ssid_len);
6072                 /* Clear any stored provisioning info */
6073                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6074         }
6075
6076         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6077                              NULL);
6078         wpa_s->p2p_go_group_formation_completed = 1;
6079         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6080                 /*
6081                  * Use a separate timeout for initial data connection to
6082                  * complete to allow the group to be removed automatically if
6083                  * something goes wrong in this step before the P2P group idle
6084                  * timeout mechanism is taken into use.
6085                  */
6086                 wpa_dbg(wpa_s, MSG_DEBUG,
6087                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6088                         P2P_MAX_INITIAL_CONN_WAIT);
6089                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6090                                        wpas_p2p_group_formation_timeout,
6091                                        wpa_s->parent, NULL);
6092         } else if (ssid) {
6093                 /*
6094                  * Use a separate timeout for initial data connection to
6095                  * complete to allow the group to be removed automatically if
6096                  * the client does not complete data connection successfully.
6097                  */
6098                 wpa_dbg(wpa_s, MSG_DEBUG,
6099                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6100                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6101                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6102                                        wpas_p2p_group_formation_timeout,
6103                                        wpa_s->parent, NULL);
6104                 /*
6105                  * Complete group formation on first successful data connection
6106                  */
6107                 wpa_s->p2p_go_group_formation_completed = 0;
6108         }
6109         if (wpa_s->global->p2p)
6110                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6111         wpas_group_formation_completed(wpa_s, 1, 0);
6112 }
6113
6114
6115 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6116                          struct wps_event_fail *fail)
6117 {
6118         if (!wpa_s->p2p_in_provisioning) {
6119                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6120                            "provisioning not in progress");
6121                 return;
6122         }
6123
6124         if (wpa_s->go_params) {
6125                 p2p_clear_provisioning_info(
6126                         wpa_s->global->p2p,
6127                         wpa_s->go_params->peer_device_addr);
6128         }
6129
6130         wpas_notify_p2p_wps_failed(wpa_s, fail);
6131
6132         if (wpa_s == wpa_s->global->p2p_group_formation) {
6133                 /*
6134                  * Allow some time for the failed WPS negotiation exchange to
6135                  * complete, but remove the group since group formation cannot
6136                  * succeed after provisioning failure.
6137                  */
6138                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6139                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6140                 eloop_deplete_timeout(0, 50000,
6141                                       wpas_p2p_group_formation_timeout,
6142                                       wpa_s->parent, NULL);
6143         }
6144 }
6145
6146
6147 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6148 {
6149         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6150             !wpa_s->p2p_in_provisioning)
6151                 return 0;
6152
6153         wpas_p2p_grpform_fail_after_wps(wpa_s);
6154
6155         return 1;
6156 }
6157
6158
6159 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6160                        const char *config_method,
6161                        enum wpas_p2p_prov_disc_use use,
6162                        struct p2ps_provision *p2ps_prov)
6163 {
6164         u16 config_methods;
6165
6166         wpa_s->global->pending_p2ps_group = 0;
6167         wpa_s->p2p_fallback_to_go_neg = 0;
6168         wpa_s->pending_pd_use = NORMAL_PD;
6169         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6170                 p2ps_prov->conncap = p2ps_group_capability(
6171                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role);
6172                 wpa_printf(MSG_DEBUG,
6173                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6174                            __func__, p2ps_prov->conncap,
6175                            p2ps_prov->adv_id, p2ps_prov->conncap,
6176                            p2ps_prov->status, p2ps_prov->info);
6177
6178                 config_methods = 0;
6179         } else if (os_strncmp(config_method, "display", 7) == 0)
6180                 config_methods = WPS_CONFIG_DISPLAY;
6181         else if (os_strncmp(config_method, "keypad", 6) == 0)
6182                 config_methods = WPS_CONFIG_KEYPAD;
6183         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6184                  os_strncmp(config_method, "pushbutton", 10) == 0)
6185                 config_methods = WPS_CONFIG_PUSHBUTTON;
6186         else {
6187                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6188                 os_free(p2ps_prov);
6189                 return -1;
6190         }
6191
6192         if (use == WPAS_P2P_PD_AUTO) {
6193                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6194                 wpa_s->pending_pd_config_methods = config_methods;
6195                 wpa_s->p2p_auto_pd = 1;
6196                 wpa_s->p2p_auto_join = 0;
6197                 wpa_s->pending_pd_before_join = 0;
6198                 wpa_s->auto_pd_scan_retry = 0;
6199                 wpas_p2p_stop_find(wpa_s);
6200                 wpa_s->p2p_join_scan_count = 0;
6201                 os_get_reltime(&wpa_s->p2p_auto_started);
6202                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6203                            wpa_s->p2p_auto_started.sec,
6204                            wpa_s->p2p_auto_started.usec);
6205                 wpas_p2p_join_scan(wpa_s, NULL);
6206                 return 0;
6207         }
6208
6209         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6210                 os_free(p2ps_prov);
6211                 return -1;
6212         }
6213
6214         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6215                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6216                                  0, 1);
6217 }
6218
6219
6220 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6221                               char *end)
6222 {
6223         return p2p_scan_result_text(ies, ies_len, buf, end);
6224 }
6225
6226
6227 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6228 {
6229         if (!offchannel_pending_action_tx(wpa_s))
6230                 return;
6231
6232         wpas_p2p_action_tx_clear(wpa_s);
6233
6234         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6235                    "operation request");
6236         offchannel_clear_pending_action_tx(wpa_s);
6237 }
6238
6239
6240 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6241                   enum p2p_discovery_type type,
6242                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6243                   const u8 *dev_id, unsigned int search_delay,
6244                   u8 seek_cnt, const char **seek_string, int freq)
6245 {
6246         wpas_p2p_clear_pending_action_tx(wpa_s);
6247         wpa_s->p2p_long_listen = 0;
6248
6249         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6250             wpa_s->p2p_in_provisioning)
6251                 return -1;
6252
6253         wpa_supplicant_cancel_sched_scan(wpa_s);
6254
6255         return p2p_find(wpa_s->global->p2p, timeout, type,
6256                         num_req_dev_types, req_dev_types, dev_id,
6257                         search_delay, seek_cnt, seek_string, freq);
6258 }
6259
6260
6261 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6262                                             struct wpa_scan_results *scan_res)
6263 {
6264         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6265
6266         if (wpa_s->p2p_scan_work) {
6267                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6268                 wpa_s->p2p_scan_work = NULL;
6269                 radio_work_done(work);
6270         }
6271
6272         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6273                 return;
6274
6275         /*
6276          * Indicate that results have been processed so that the P2P module can
6277          * continue pending tasks.
6278          */
6279         p2p_scan_res_handled(wpa_s->global->p2p);
6280 }
6281
6282
6283 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6284 {
6285         wpas_p2p_clear_pending_action_tx(wpa_s);
6286         wpa_s->p2p_long_listen = 0;
6287         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6288         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6289
6290         if (wpa_s->global->p2p)
6291                 p2p_stop_find(wpa_s->global->p2p);
6292
6293         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6294                 wpa_printf(MSG_DEBUG,
6295                            "P2P: Do not consider the scan results after stop_find");
6296                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6297         }
6298 }
6299
6300
6301 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6302 {
6303         wpas_p2p_stop_find_oper(wpa_s);
6304         if (!wpa_s->global->pending_group_iface_for_p2ps)
6305                 wpas_p2p_remove_pending_group_interface(wpa_s);
6306 }
6307
6308
6309 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6310 {
6311         struct wpa_supplicant *wpa_s = eloop_ctx;
6312         wpa_s->p2p_long_listen = 0;
6313 }
6314
6315
6316 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6317 {
6318         int res;
6319
6320         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6321                 return -1;
6322
6323         wpa_supplicant_cancel_sched_scan(wpa_s);
6324         wpas_p2p_clear_pending_action_tx(wpa_s);
6325
6326         if (timeout == 0) {
6327                 /*
6328                  * This is a request for unlimited Listen state. However, at
6329                  * least for now, this is mapped to a Listen state for one
6330                  * hour.
6331                  */
6332                 timeout = 3600;
6333         }
6334         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6335         wpa_s->p2p_long_listen = 0;
6336
6337         /*
6338          * Stop previous find/listen operation to avoid trying to request a new
6339          * remain-on-channel operation while the driver is still running the
6340          * previous one.
6341          */
6342         if (wpa_s->global->p2p)
6343                 p2p_stop_find(wpa_s->global->p2p);
6344
6345         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6346         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6347                 wpa_s->p2p_long_listen = timeout * 1000;
6348                 eloop_register_timeout(timeout, 0,
6349                                        wpas_p2p_long_listen_timeout,
6350                                        wpa_s, NULL);
6351         }
6352
6353         return res;
6354 }
6355
6356
6357 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6358                           u8 *buf, size_t len, int p2p_group)
6359 {
6360         struct wpabuf *p2p_ie;
6361         int ret;
6362
6363         if (wpa_s->global->p2p_disabled)
6364                 return -1;
6365         /*
6366          * Advertize mandatory cross connection capability even on
6367          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6368          */
6369         if (wpa_s->conf->p2p_disabled && p2p_group)
6370                 return -1;
6371         if (wpa_s->global->p2p == NULL)
6372                 return -1;
6373         if (bss == NULL)
6374                 return -1;
6375
6376         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6377         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6378                                p2p_group, p2p_ie);
6379         wpabuf_free(p2p_ie);
6380
6381         return ret;
6382 }
6383
6384
6385 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6386                           const u8 *dst, const u8 *bssid,
6387                           const u8 *ie, size_t ie_len,
6388                           unsigned int rx_freq, int ssi_signal)
6389 {
6390         if (wpa_s->global->p2p_disabled)
6391                 return 0;
6392         if (wpa_s->global->p2p == NULL)
6393                 return 0;
6394
6395         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6396                                  ie, ie_len, rx_freq)) {
6397         case P2P_PREQ_NOT_P2P:
6398                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6399                                  ssi_signal);
6400                 /* fall through */
6401         case P2P_PREQ_MALFORMED:
6402         case P2P_PREQ_NOT_LISTEN:
6403         case P2P_PREQ_NOT_PROCESSED:
6404         default: /* make gcc happy */
6405                 return 0;
6406         case P2P_PREQ_PROCESSED:
6407                 return 1;
6408         }
6409 }
6410
6411
6412 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6413                         const u8 *sa, const u8 *bssid,
6414                         u8 category, const u8 *data, size_t len, int freq)
6415 {
6416         if (wpa_s->global->p2p_disabled)
6417                 return;
6418         if (wpa_s->global->p2p == NULL)
6419                 return;
6420
6421         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6422                       freq);
6423 }
6424
6425
6426 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6427 {
6428         if (wpa_s->global->p2p_disabled)
6429                 return;
6430         if (wpa_s->global->p2p == NULL)
6431                 return;
6432
6433         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6434 }
6435
6436
6437 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6438 {
6439         p2p_group_deinit(wpa_s->p2p_group);
6440         wpa_s->p2p_group = NULL;
6441
6442         wpa_s->ap_configured_cb = NULL;
6443         wpa_s->ap_configured_cb_ctx = NULL;
6444         wpa_s->ap_configured_cb_data = NULL;
6445         wpa_s->connect_without_scan = NULL;
6446 }
6447
6448
6449 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6450 {
6451         wpa_s->p2p_long_listen = 0;
6452
6453         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6454                 return -1;
6455
6456         return p2p_reject(wpa_s->global->p2p, addr);
6457 }
6458
6459
6460 /* Invite to reinvoke a persistent group */
6461 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6462                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6463                     int ht40, int vht, int pref_freq)
6464 {
6465         enum p2p_invite_role role;
6466         u8 *bssid = NULL;
6467         int force_freq = 0;
6468         int res;
6469         int no_pref_freq_given = pref_freq == 0;
6470         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6471
6472         wpa_s->global->p2p_invite_group = NULL;
6473         if (peer_addr)
6474                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6475         else
6476                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6477
6478         wpa_s->p2p_persistent_go_freq = freq;
6479         wpa_s->p2p_go_ht40 = !!ht40;
6480         if (ssid->mode == WPAS_MODE_P2P_GO) {
6481                 role = P2P_INVITE_ROLE_GO;
6482                 if (peer_addr == NULL) {
6483                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6484                                    "address in invitation command");
6485                         return -1;
6486                 }
6487                 if (wpas_p2p_create_iface(wpa_s)) {
6488                         if (wpas_p2p_add_group_interface(wpa_s,
6489                                                          WPA_IF_P2P_GO) < 0) {
6490                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6491                                            "allocate a new interface for the "
6492                                            "group");
6493                                 return -1;
6494                         }
6495                         bssid = wpa_s->pending_interface_addr;
6496                 } else
6497                         bssid = wpa_s->own_addr;
6498         } else {
6499                 role = P2P_INVITE_ROLE_CLIENT;
6500                 peer_addr = ssid->bssid;
6501         }
6502         wpa_s->pending_invite_ssid_id = ssid->id;
6503
6504         size = P2P_MAX_PREF_CHANNELS;
6505         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6506                                    role == P2P_INVITE_ROLE_GO,
6507                                    pref_freq_list, &size);
6508         if (res)
6509                 return res;
6510         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6511
6512         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6513                 return -1;
6514
6515         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6516             no_pref_freq_given && pref_freq > 0 &&
6517             wpa_s->num_multichan_concurrent > 1 &&
6518             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6519                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6520                            pref_freq);
6521                 pref_freq = 0;
6522         }
6523
6524         /*
6525          * Stop any find/listen operations before invitation and possibly
6526          * connection establishment.
6527          */
6528         wpas_p2p_stop_find_oper(wpa_s);
6529
6530         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6531                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6532                           1, pref_freq, -1);
6533 }
6534
6535
6536 /* Invite to join an active group */
6537 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6538                           const u8 *peer_addr, const u8 *go_dev_addr)
6539 {
6540         struct wpa_global *global = wpa_s->global;
6541         enum p2p_invite_role role;
6542         u8 *bssid = NULL;
6543         struct wpa_ssid *ssid;
6544         int persistent;
6545         int freq = 0, force_freq = 0, pref_freq = 0;
6546         int res;
6547         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6548
6549         wpa_s->p2p_persistent_go_freq = 0;
6550         wpa_s->p2p_go_ht40 = 0;
6551         wpa_s->p2p_go_vht = 0;
6552
6553         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6554                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6555                         break;
6556         }
6557         if (wpa_s == NULL) {
6558                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6559                 return -1;
6560         }
6561
6562         ssid = wpa_s->current_ssid;
6563         if (ssid == NULL) {
6564                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6565                            "invitation");
6566                 return -1;
6567         }
6568
6569         wpa_s->global->p2p_invite_group = wpa_s;
6570         persistent = ssid->p2p_persistent_group &&
6571                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6572                                         ssid->ssid, ssid->ssid_len);
6573
6574         if (ssid->mode == WPAS_MODE_P2P_GO) {
6575                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6576                 bssid = wpa_s->own_addr;
6577                 if (go_dev_addr == NULL)
6578                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6579                 freq = ssid->frequency;
6580         } else {
6581                 role = P2P_INVITE_ROLE_CLIENT;
6582                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6583                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6584                                    "invite to current group");
6585                         return -1;
6586                 }
6587                 bssid = wpa_s->bssid;
6588                 if (go_dev_addr == NULL &&
6589                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6590                         go_dev_addr = wpa_s->go_dev_addr;
6591                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6592                         (int) wpa_s->assoc_freq;
6593         }
6594         wpa_s->parent->pending_invite_ssid_id = -1;
6595
6596         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6597                 return -1;
6598
6599         size = P2P_MAX_PREF_CHANNELS;
6600         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6601                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
6602                                    pref_freq_list, &size);
6603         if (res)
6604                 return res;
6605         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6606
6607         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6608                           ssid->ssid, ssid->ssid_len, force_freq,
6609                           go_dev_addr, persistent, pref_freq, -1);
6610 }
6611
6612
6613 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6614 {
6615         struct wpa_ssid *ssid = wpa_s->current_ssid;
6616         u8 go_dev_addr[ETH_ALEN];
6617         int network_id = -1;
6618         int persistent;
6619         int freq;
6620         u8 ip[3 * 4];
6621         char ip_addr[100];
6622
6623         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6624                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6625                                      wpa_s->parent, NULL);
6626         }
6627
6628         if (!wpa_s->show_group_started || !ssid)
6629                 return;
6630
6631         wpa_s->show_group_started = 0;
6632
6633         os_memset(go_dev_addr, 0, ETH_ALEN);
6634         if (ssid->bssid_set)
6635                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6636         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6637                                                ssid->ssid_len);
6638         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6639
6640         if (wpa_s->global->p2p_group_formation == wpa_s)
6641                 wpa_s->global->p2p_group_formation = NULL;
6642
6643         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6644                 (int) wpa_s->assoc_freq;
6645
6646         ip_addr[0] = '\0';
6647         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6648                 int res;
6649
6650                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6651                                   " ip_addr=%u.%u.%u.%u "
6652                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6653                                   ip[0], ip[1], ip[2], ip[3],
6654                                   ip[4], ip[5], ip[6], ip[7],
6655                                   ip[8], ip[9], ip[10], ip[11]);
6656                 if (os_snprintf_error(sizeof(ip_addr), res))
6657                         ip_addr[0] = '\0';
6658         }
6659
6660         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6661                                ssid->passphrase == NULL && ssid->psk_set ?
6662                                ssid->psk : NULL,
6663                                ssid->passphrase, go_dev_addr, persistent,
6664                                ip_addr);
6665
6666         if (persistent)
6667                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6668                                                              ssid, go_dev_addr);
6669         if (network_id < 0)
6670                 network_id = ssid->id;
6671         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6672 }
6673
6674
6675 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6676                           u32 interval1, u32 duration2, u32 interval2)
6677 {
6678         int ret;
6679
6680         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6681                 return -1;
6682
6683         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6684             wpa_s->current_ssid == NULL ||
6685             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6686                 return -1;
6687
6688         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6689                                wpa_s->own_addr, wpa_s->assoc_freq,
6690                                duration1, interval1, duration2, interval2);
6691         if (ret == 0)
6692                 wpa_s->waiting_presence_resp = 1;
6693
6694         return ret;
6695 }
6696
6697
6698 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6699                         unsigned int interval)
6700 {
6701         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6702                 return -1;
6703
6704         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6705 }
6706
6707
6708 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6709 {
6710         if (wpa_s->current_ssid == NULL) {
6711                 /*
6712                  * current_ssid can be cleared when P2P client interface gets
6713                  * disconnected, so assume this interface was used as P2P
6714                  * client.
6715                  */
6716                 return 1;
6717         }
6718         return wpa_s->current_ssid->p2p_group &&
6719                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6720 }
6721
6722
6723 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6724 {
6725         struct wpa_supplicant *wpa_s = eloop_ctx;
6726
6727         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6728                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6729                            "disabled");
6730                 return;
6731         }
6732
6733         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6734                    "group");
6735         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6736 }
6737
6738
6739 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6740 {
6741         int timeout;
6742
6743         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6744                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6745
6746         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6747                 return;
6748
6749         timeout = wpa_s->conf->p2p_group_idle;
6750         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6751             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6752             timeout = P2P_MAX_CLIENT_IDLE;
6753
6754         if (timeout == 0)
6755                 return;
6756
6757         if (timeout < 0) {
6758                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6759                         timeout = 0; /* special client mode no-timeout */
6760                 else
6761                         return;
6762         }
6763
6764         if (wpa_s->p2p_in_provisioning) {
6765                 /*
6766                  * Use the normal group formation timeout during the
6767                  * provisioning phase to avoid terminating this process too
6768                  * early due to group idle timeout.
6769                  */
6770                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6771                            "during provisioning");
6772                 return;
6773         }
6774
6775         if (wpa_s->show_group_started) {
6776                 /*
6777                  * Use the normal group formation timeout between the end of
6778                  * the provisioning phase and completion of 4-way handshake to
6779                  * avoid terminating this process too early due to group idle
6780                  * timeout.
6781                  */
6782                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6783                            "while waiting for initial 4-way handshake to "
6784                            "complete");
6785                 return;
6786         }
6787
6788         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6789                    timeout);
6790         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6791                                wpa_s, NULL);
6792 }
6793
6794
6795 /* Returns 1 if the interface was removed */
6796 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6797                           u16 reason_code, const u8 *ie, size_t ie_len,
6798                           int locally_generated)
6799 {
6800         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6801                 return 0;
6802
6803         if (!locally_generated)
6804                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6805                                  ie_len);
6806
6807         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6808             wpa_s->current_ssid &&
6809             wpa_s->current_ssid->p2p_group &&
6810             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6811                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6812                            "session is ending");
6813                 if (wpas_p2p_group_delete(wpa_s,
6814                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6815                     > 0)
6816                         return 1;
6817         }
6818
6819         return 0;
6820 }
6821
6822
6823 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6824                              u16 reason_code, const u8 *ie, size_t ie_len,
6825                              int locally_generated)
6826 {
6827         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6828                 return;
6829
6830         if (!locally_generated)
6831                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6832                                    ie_len);
6833 }
6834
6835
6836 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6837 {
6838         struct p2p_data *p2p = wpa_s->global->p2p;
6839
6840         if (p2p == NULL)
6841                 return;
6842
6843         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6844                 return;
6845
6846         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6847                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6848
6849         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6850                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6851
6852         if (wpa_s->wps &&
6853             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6854                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6855
6856         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6857                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6858
6859         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6860                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6861                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6862                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6863                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6864         }
6865
6866         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6867                 p2p_set_sec_dev_types(p2p,
6868                                       (void *) wpa_s->conf->sec_device_type,
6869                                       wpa_s->conf->num_sec_device_types);
6870
6871         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6872                 int i;
6873                 p2p_remove_wps_vendor_extensions(p2p);
6874                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6875                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6876                                 continue;
6877                         p2p_add_wps_vendor_extension(
6878                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
6879                 }
6880         }
6881
6882         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6883             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6884                 char country[3];
6885                 country[0] = wpa_s->conf->country[0];
6886                 country[1] = wpa_s->conf->country[1];
6887                 country[2] = 0x04;
6888                 p2p_set_country(p2p, country);
6889         }
6890
6891         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6892                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6893                                      wpa_s->conf->p2p_ssid_postfix ?
6894                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6895                                      0);
6896         }
6897
6898         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6899                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6900
6901         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6902                 u8 reg_class, channel;
6903                 int ret;
6904                 unsigned int r;
6905                 u8 channel_forced;
6906
6907                 if (wpa_s->conf->p2p_listen_reg_class &&
6908                     wpa_s->conf->p2p_listen_channel) {
6909                         reg_class = wpa_s->conf->p2p_listen_reg_class;
6910                         channel = wpa_s->conf->p2p_listen_channel;
6911                         channel_forced = 1;
6912                 } else {
6913                         reg_class = 81;
6914                         /*
6915                          * Pick one of the social channels randomly as the
6916                          * listen channel.
6917                          */
6918                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6919                                 channel = 1;
6920                         else
6921                                 channel = 1 + (r % 3) * 5;
6922                         channel_forced = 0;
6923                 }
6924                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
6925                                              channel_forced);
6926                 if (ret)
6927                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6928                                    "failed: %d", ret);
6929         }
6930         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6931                 u8 op_reg_class, op_channel, cfg_op_channel;
6932                 int ret = 0;
6933                 unsigned int r;
6934                 if (wpa_s->conf->p2p_oper_reg_class &&
6935                     wpa_s->conf->p2p_oper_channel) {
6936                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6937                         op_channel = wpa_s->conf->p2p_oper_channel;
6938                         cfg_op_channel = 1;
6939                 } else {
6940                         op_reg_class = 81;
6941                         /*
6942                          * Use random operation channel from (1, 6, 11)
6943                          *if no other preference is indicated.
6944                          */
6945                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6946                                 op_channel = 1;
6947                         else
6948                                 op_channel = 1 + (r % 3) * 5;
6949                         cfg_op_channel = 0;
6950                 }
6951                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6952                                            cfg_op_channel);
6953                 if (ret)
6954                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6955                                    "failed: %d", ret);
6956         }
6957
6958         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6959                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6960                                       wpa_s->conf->p2p_pref_chan) < 0) {
6961                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6962                                    "update failed");
6963                 }
6964
6965                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6966                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6967                                    "update failed");
6968                 }
6969         }
6970
6971         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
6972                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
6973 }
6974
6975
6976 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6977                      int duration)
6978 {
6979         if (!wpa_s->ap_iface)
6980                 return -1;
6981         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6982                                    duration);
6983 }
6984
6985
6986 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6987 {
6988         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6989                 return -1;
6990
6991         wpa_s->global->cross_connection = enabled;
6992         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6993
6994         if (!enabled) {
6995                 struct wpa_supplicant *iface;
6996
6997                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6998                 {
6999                         if (iface->cross_connect_enabled == 0)
7000                                 continue;
7001
7002                         iface->cross_connect_enabled = 0;
7003                         iface->cross_connect_in_use = 0;
7004                         wpa_msg_global(iface->parent, MSG_INFO,
7005                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7006                                        iface->ifname,
7007                                        iface->cross_connect_uplink);
7008                 }
7009         }
7010
7011         return 0;
7012 }
7013
7014
7015 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7016 {
7017         struct wpa_supplicant *iface;
7018
7019         if (!uplink->global->cross_connection)
7020                 return;
7021
7022         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7023                 if (!iface->cross_connect_enabled)
7024                         continue;
7025                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7026                     0)
7027                         continue;
7028                 if (iface->ap_iface == NULL)
7029                         continue;
7030                 if (iface->cross_connect_in_use)
7031                         continue;
7032
7033                 iface->cross_connect_in_use = 1;
7034                 wpa_msg_global(iface->parent, MSG_INFO,
7035                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7036                                iface->ifname, iface->cross_connect_uplink);
7037         }
7038 }
7039
7040
7041 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7042 {
7043         struct wpa_supplicant *iface;
7044
7045         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7046                 if (!iface->cross_connect_enabled)
7047                         continue;
7048                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7049                     0)
7050                         continue;
7051                 if (!iface->cross_connect_in_use)
7052                         continue;
7053
7054                 wpa_msg_global(iface->parent, MSG_INFO,
7055                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7056                                iface->ifname, iface->cross_connect_uplink);
7057                 iface->cross_connect_in_use = 0;
7058         }
7059 }
7060
7061
7062 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7063 {
7064         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7065             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7066             wpa_s->cross_connect_disallowed)
7067                 wpas_p2p_disable_cross_connect(wpa_s);
7068         else
7069                 wpas_p2p_enable_cross_connect(wpa_s);
7070         if (!wpa_s->ap_iface &&
7071             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7072                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7073 }
7074
7075
7076 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7077 {
7078         wpas_p2p_disable_cross_connect(wpa_s);
7079         if (!wpa_s->ap_iface &&
7080             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7081                                          wpa_s, NULL))
7082                 wpas_p2p_set_group_idle_timeout(wpa_s);
7083 }
7084
7085
7086 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7087 {
7088         struct wpa_supplicant *iface;
7089
7090         if (!wpa_s->global->cross_connection)
7091                 return;
7092
7093         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7094                 if (iface == wpa_s)
7095                         continue;
7096                 if (iface->drv_flags &
7097                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7098                         continue;
7099                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7100                     iface != wpa_s->parent)
7101                         continue;
7102
7103                 wpa_s->cross_connect_enabled = 1;
7104                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7105                            sizeof(wpa_s->cross_connect_uplink));
7106                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7107                            "%s to %s whenever uplink is available",
7108                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7109
7110                 if (iface->ap_iface || iface->current_ssid == NULL ||
7111                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7112                     iface->cross_connect_disallowed ||
7113                     iface->wpa_state != WPA_COMPLETED)
7114                         break;
7115
7116                 wpa_s->cross_connect_in_use = 1;
7117                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7118                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7119                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7120                 break;
7121         }
7122 }
7123
7124
7125 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7126 {
7127         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7128             !wpa_s->p2p_in_provisioning)
7129                 return 0; /* not P2P client operation */
7130
7131         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7132                    "session overlap");
7133         if (wpa_s != wpa_s->parent)
7134                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
7135         wpas_p2p_group_formation_failed(wpa_s, 0);
7136         return 1;
7137 }
7138
7139
7140 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7141 {
7142         struct wpa_supplicant *wpa_s = eloop_ctx;
7143         wpas_p2p_notif_pbc_overlap(wpa_s);
7144 }
7145
7146
7147 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7148                                   enum wpas_p2p_channel_update_trig trig)
7149 {
7150         struct p2p_channels chan, cli_chan;
7151         struct wpa_used_freq_data *freqs = NULL;
7152         unsigned int num = wpa_s->num_multichan_concurrent;
7153
7154         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7155                 return;
7156
7157         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7158         if (!freqs)
7159                 return;
7160
7161         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7162
7163         os_memset(&chan, 0, sizeof(chan));
7164         os_memset(&cli_chan, 0, sizeof(cli_chan));
7165         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7166                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7167                            "channel list");
7168                 return;
7169         }
7170
7171         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7172
7173         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7174
7175         /*
7176          * The used frequencies map changed, so it is possible that a GO is
7177          * using a channel that is no longer valid for P2P use. It is also
7178          * possible that due to policy consideration, it would be preferable to
7179          * move it to a frequency already used by other station interfaces.
7180          */
7181         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7182
7183         os_free(freqs);
7184 }
7185
7186
7187 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7188                                      struct wpa_scan_results *scan_res)
7189 {
7190         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7191 }
7192
7193
7194 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7195 {
7196         struct wpa_global *global = wpa_s->global;
7197         int found = 0;
7198         const u8 *peer;
7199
7200         if (global->p2p == NULL)
7201                 return -1;
7202
7203         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7204
7205         if (wpa_s->pending_interface_name[0] &&
7206             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7207                 found = 1;
7208
7209         peer = p2p_get_go_neg_peer(global->p2p);
7210         if (peer) {
7211                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7212                            MACSTR, MAC2STR(peer));
7213                 p2p_unauthorize(global->p2p, peer);
7214                 found = 1;
7215         }
7216
7217         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7218                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7219                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7220                 found = 1;
7221         }
7222
7223         if (wpa_s->pending_pd_before_join) {
7224                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7225                 wpa_s->pending_pd_before_join = 0;
7226                 found = 1;
7227         }
7228
7229         wpas_p2p_stop_find(wpa_s);
7230
7231         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7232                 if (wpa_s == global->p2p_group_formation &&
7233                     (wpa_s->p2p_in_provisioning ||
7234                      wpa_s->parent->pending_interface_type ==
7235                      WPA_IF_P2P_CLIENT)) {
7236                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7237                                    "formation found - cancelling",
7238                                    wpa_s->ifname);
7239                         found = 1;
7240                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7241                                              wpa_s->parent, NULL);
7242                         if (wpa_s->p2p_in_provisioning) {
7243                                 wpas_group_formation_completed(wpa_s, 0, 0);
7244                                 break;
7245                         }
7246                         wpas_p2p_group_delete(wpa_s,
7247                                               P2P_GROUP_REMOVAL_REQUESTED);
7248                         break;
7249                 } else if (wpa_s->p2p_in_invitation) {
7250                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7251                                    wpa_s->ifname);
7252                         found = 1;
7253                         wpas_p2p_group_formation_failed(wpa_s, 0);
7254                 }
7255         }
7256
7257         if (!found) {
7258                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7259                 return -1;
7260         }
7261
7262         return 0;
7263 }
7264
7265
7266 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7267 {
7268         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7269                 return;
7270
7271         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7272                    "being available anymore");
7273         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7274 }
7275
7276
7277 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7278                                    int freq_24, int freq_5, int freq_overall)
7279 {
7280         struct p2p_data *p2p = wpa_s->global->p2p;
7281         if (p2p == NULL)
7282                 return;
7283         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7284 }
7285
7286
7287 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7288 {
7289         u8 peer[ETH_ALEN];
7290         struct p2p_data *p2p = wpa_s->global->p2p;
7291
7292         if (p2p == NULL)
7293                 return -1;
7294
7295         if (hwaddr_aton(addr, peer))
7296                 return -1;
7297
7298         return p2p_unauthorize(p2p, peer);
7299 }
7300
7301
7302 /**
7303  * wpas_p2p_disconnect - Disconnect from a P2P Group
7304  * @wpa_s: Pointer to wpa_supplicant data
7305  * Returns: 0 on success, -1 on failure
7306  *
7307  * This can be used to disconnect from a group in which the local end is a P2P
7308  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7309  * virtual network interface was created for this group, that interface will be
7310  * removed. Otherwise, only the configured P2P group network will be removed
7311  * from the interface.
7312  */
7313 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7314 {
7315
7316         if (wpa_s == NULL)
7317                 return -1;
7318
7319         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7320                 -1 : 0;
7321 }
7322
7323
7324 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7325 {
7326         int ret;
7327
7328         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7329                 return 0;
7330
7331         ret = p2p_in_progress(wpa_s->global->p2p);
7332         if (ret == 0) {
7333                 /*
7334                  * Check whether there is an ongoing WPS provisioning step (or
7335                  * other parts of group formation) on another interface since
7336                  * p2p_in_progress() does not report this to avoid issues for
7337                  * scans during such provisioning step.
7338                  */
7339                 if (wpa_s->global->p2p_group_formation &&
7340                     wpa_s->global->p2p_group_formation != wpa_s) {
7341                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7342                                 "in group formation",
7343                                 wpa_s->global->p2p_group_formation->ifname);
7344                         ret = 1;
7345                 }
7346         }
7347
7348         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7349                 struct os_reltime now;
7350                 os_get_reltime(&now);
7351                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7352                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7353                         /* Wait for the first client has expired */
7354                         wpa_s->global->p2p_go_wait_client.sec = 0;
7355                 } else {
7356                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7357                         ret = 1;
7358                 }
7359         }
7360
7361         return ret;
7362 }
7363
7364
7365 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7366                               struct wpa_ssid *ssid)
7367 {
7368         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7369             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7370                                  wpa_s->parent, NULL) > 0) {
7371                 /**
7372                  * Remove the network by scheduling the group formation
7373                  * timeout to happen immediately. The teardown code
7374                  * needs to be scheduled to run asynch later so that we
7375                  * don't delete data from under ourselves unexpectedly.
7376                  * Calling wpas_p2p_group_formation_timeout directly
7377                  * causes a series of crashes in WPS failure scenarios.
7378                  */
7379                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7380                            "P2P group network getting removed");
7381                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7382                                        wpa_s->parent, NULL);
7383         }
7384 }
7385
7386
7387 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7388                                           const u8 *addr, const u8 *ssid,
7389                                           size_t ssid_len)
7390 {
7391         struct wpa_ssid *s;
7392         size_t i;
7393
7394         for (s = wpa_s->conf->ssid; s; s = s->next) {
7395                 if (s->disabled != 2)
7396                         continue;
7397                 if (ssid &&
7398                     (ssid_len != s->ssid_len ||
7399                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7400                         continue;
7401                 if (addr == NULL) {
7402                         if (s->mode == WPAS_MODE_P2P_GO)
7403                                 return s;
7404                         continue;
7405                 }
7406                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7407                         return s; /* peer is GO in the persistent group */
7408                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7409                         continue;
7410                 for (i = 0; i < s->num_p2p_clients; i++) {
7411                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7412                                       addr, ETH_ALEN) == 0)
7413                                 return s; /* peer is P2P client in persistent
7414                                            * group */
7415                 }
7416         }
7417
7418         return NULL;
7419 }
7420
7421
7422 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7423                                        const u8 *addr)
7424 {
7425         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7426                                  wpa_s->parent, NULL) > 0) {
7427                 /*
7428                  * This can happen if WPS provisioning step is not terminated
7429                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7430                  * peer was able to connect, there is no need to time out group
7431                  * formation after this, though. In addition, this is used with
7432                  * the initial connection wait on the GO as a separate formation
7433                  * timeout and as such, expected to be hit after the initial WPS
7434                  * provisioning step.
7435                  */
7436                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7437
7438                 if (!wpa_s->p2p_go_group_formation_completed &&
7439                     !wpa_s->group_formation_reported) {
7440                         /*
7441                          * GO has not yet notified group formation success since
7442                          * the WPS step was not completed cleanly. Do that
7443                          * notification now since the P2P Client was able to
7444                          * connect and as such, must have received the
7445                          * credential from the WPS step.
7446                          */
7447                         if (wpa_s->global->p2p)
7448                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7449                         wpas_group_formation_completed(wpa_s, 1, 0);
7450                 }
7451         }
7452         if (!wpa_s->p2p_go_group_formation_completed) {
7453                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7454                 wpa_s->p2p_go_group_formation_completed = 1;
7455                 wpa_s->global->p2p_group_formation = NULL;
7456                 wpa_s->p2p_in_provisioning = 0;
7457                 wpa_s->p2p_in_invitation = 0;
7458         }
7459         wpa_s->global->p2p_go_wait_client.sec = 0;
7460         if (addr == NULL)
7461                 return;
7462         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7463 }
7464
7465
7466 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7467                                        int group_added)
7468 {
7469         struct wpa_supplicant *group = wpa_s;
7470         int ret = 0;
7471
7472         if (wpa_s->global->p2p_group_formation)
7473                 group = wpa_s->global->p2p_group_formation;
7474         wpa_s = wpa_s->global->p2p_init_wpa_s;
7475         offchannel_send_action_done(wpa_s);
7476         if (group_added)
7477                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7478         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7479         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7480                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7481                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7482                          wpa_s->p2p_persistent_id,
7483                          wpa_s->p2p_pd_before_go_neg,
7484                          wpa_s->p2p_go_ht40,
7485                          wpa_s->p2p_go_vht);
7486         return ret;
7487 }
7488
7489
7490 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7491 {
7492         int res;
7493
7494         if (!wpa_s->p2p_fallback_to_go_neg ||
7495             wpa_s->p2p_in_provisioning <= 5)
7496                 return 0;
7497
7498         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7499                 return 0; /* peer operating as a GO */
7500
7501         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7502                 "fallback to GO Negotiation");
7503         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7504                        "reason=GO-not-found");
7505         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7506
7507         return res == 1 ? 2 : 1;
7508 }
7509
7510
7511 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7512 {
7513         struct wpa_supplicant *ifs;
7514
7515         if (wpa_s->wpa_state > WPA_SCANNING) {
7516                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7517                         "concurrent operation",
7518                         wpa_s->conf->p2p_search_delay);
7519                 return wpa_s->conf->p2p_search_delay;
7520         }
7521
7522         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7523                          radio_list) {
7524                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7525                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7526                                 "delay due to concurrent operation on "
7527                                 "interface %s",
7528                                 wpa_s->conf->p2p_search_delay,
7529                                 ifs->ifname);
7530                         return wpa_s->conf->p2p_search_delay;
7531                 }
7532         }
7533
7534         return 0;
7535 }
7536
7537
7538 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7539                                      struct wpa_ssid *s, const u8 *addr,
7540                                      int iface_addr)
7541 {
7542         struct psk_list_entry *psk, *tmp;
7543         int changed = 0;
7544
7545         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7546                               list) {
7547                 if ((iface_addr && !psk->p2p &&
7548                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7549                     (!iface_addr && psk->p2p &&
7550                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7551                         wpa_dbg(wpa_s, MSG_DEBUG,
7552                                 "P2P: Remove persistent group PSK list entry for "
7553                                 MACSTR " p2p=%u",
7554                                 MAC2STR(psk->addr), psk->p2p);
7555                         dl_list_del(&psk->list);
7556                         os_free(psk);
7557                         changed++;
7558                 }
7559         }
7560
7561         return changed;
7562 }
7563
7564
7565 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7566                          const u8 *p2p_dev_addr,
7567                          const u8 *psk, size_t psk_len)
7568 {
7569         struct wpa_ssid *ssid = wpa_s->current_ssid;
7570         struct wpa_ssid *persistent;
7571         struct psk_list_entry *p, *last;
7572
7573         if (psk_len != sizeof(p->psk))
7574                 return;
7575
7576         if (p2p_dev_addr) {
7577                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7578                         " p2p_dev_addr=" MACSTR,
7579                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7580                 if (is_zero_ether_addr(p2p_dev_addr))
7581                         p2p_dev_addr = NULL;
7582         } else {
7583                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7584                         MAC2STR(mac_addr));
7585         }
7586
7587         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7588                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7589                 /* To be added to persistent group once created */
7590                 if (wpa_s->global->add_psk == NULL) {
7591                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7592                         if (wpa_s->global->add_psk == NULL)
7593                                 return;
7594                 }
7595                 p = wpa_s->global->add_psk;
7596                 if (p2p_dev_addr) {
7597                         p->p2p = 1;
7598                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7599                 } else {
7600                         p->p2p = 0;
7601                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7602                 }
7603                 os_memcpy(p->psk, psk, psk_len);
7604                 return;
7605         }
7606
7607         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7608                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7609                 return;
7610         }
7611
7612         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7613                                              ssid->ssid_len);
7614         if (!persistent) {
7615                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7616                 return;
7617         }
7618
7619         p = os_zalloc(sizeof(*p));
7620         if (p == NULL)
7621                 return;
7622         if (p2p_dev_addr) {
7623                 p->p2p = 1;
7624                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7625         } else {
7626                 p->p2p = 0;
7627                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7628         }
7629         os_memcpy(p->psk, psk, psk_len);
7630
7631         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7632             (last = dl_list_last(&persistent->psk_list,
7633                                  struct psk_list_entry, list))) {
7634                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7635                         MACSTR " (p2p=%u) to make room for a new one",
7636                         MAC2STR(last->addr), last->p2p);
7637                 dl_list_del(&last->list);
7638                 os_free(last);
7639         }
7640
7641         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7642                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7643                                   p2p_dev_addr == NULL);
7644         if (p2p_dev_addr) {
7645                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7646                         MACSTR, MAC2STR(p2p_dev_addr));
7647         } else {
7648                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7649                         MAC2STR(mac_addr));
7650         }
7651         dl_list_add(&persistent->psk_list, &p->list);
7652
7653         if (wpa_s->parent->conf->update_config &&
7654             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7655                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7656 }
7657
7658
7659 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7660                                 struct wpa_ssid *s, const u8 *addr,
7661                                 int iface_addr)
7662 {
7663         int res;
7664
7665         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7666         if (res > 0 && wpa_s->conf->update_config &&
7667             wpa_config_write(wpa_s->confname, wpa_s->conf))
7668                 wpa_dbg(wpa_s, MSG_DEBUG,
7669                         "P2P: Failed to update configuration");
7670 }
7671
7672
7673 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7674                                       const u8 *peer, int iface_addr)
7675 {
7676         struct hostapd_data *hapd;
7677         struct hostapd_wpa_psk *psk, *prev, *rem;
7678         struct sta_info *sta;
7679
7680         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7681             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7682                 return;
7683
7684         /* Remove per-station PSK entry */
7685         hapd = wpa_s->ap_iface->bss[0];
7686         prev = NULL;
7687         psk = hapd->conf->ssid.wpa_psk;
7688         while (psk) {
7689                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7690                     (!iface_addr &&
7691                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7692                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7693                                 MACSTR " iface_addr=%d",
7694                                 MAC2STR(peer), iface_addr);
7695                         if (prev)
7696                                 prev->next = psk->next;
7697                         else
7698                                 hapd->conf->ssid.wpa_psk = psk->next;
7699                         rem = psk;
7700                         psk = psk->next;
7701                         os_free(rem);
7702                 } else {
7703                         prev = psk;
7704                         psk = psk->next;
7705                 }
7706         }
7707
7708         /* Disconnect from group */
7709         if (iface_addr)
7710                 sta = ap_get_sta(hapd, peer);
7711         else
7712                 sta = ap_get_sta_p2p(hapd, peer);
7713         if (sta) {
7714                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7715                         " (iface_addr=%d) from group",
7716                         MAC2STR(peer), iface_addr);
7717                 hostapd_drv_sta_deauth(hapd, sta->addr,
7718                                        WLAN_REASON_DEAUTH_LEAVING);
7719                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7720         }
7721 }
7722
7723
7724 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7725                             int iface_addr)
7726 {
7727         struct wpa_ssid *s;
7728         struct wpa_supplicant *w;
7729         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
7730
7731         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
7732
7733         /* Remove from any persistent group */
7734         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
7735                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
7736                         continue;
7737                 if (!iface_addr)
7738                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
7739                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
7740         }
7741
7742         /* Remove from any operating group */
7743         for (w = wpa_s->global->ifaces; w; w = w->next)
7744                 wpas_p2p_remove_client_go(w, peer, iface_addr);
7745 }
7746
7747
7748 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
7749 {
7750         struct wpa_supplicant *wpa_s = eloop_ctx;
7751         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
7752 }
7753
7754
7755 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
7756 {
7757         struct wpa_supplicant *wpa_s = eloop_ctx;
7758
7759         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
7760         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
7761 }
7762
7763
7764 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
7765                                         struct wpa_ssid *ssid)
7766 {
7767         struct wpa_supplicant *iface;
7768
7769         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7770                 if (!iface->current_ssid ||
7771                     iface->current_ssid->frequency == freq ||
7772                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
7773                      !iface->current_ssid->p2p_group))
7774                         continue;
7775
7776                 /* Remove the connection with least priority */
7777                 if (!wpas_is_p2p_prioritized(iface)) {
7778                         /* STA connection has priority over existing
7779                          * P2P connection, so remove the interface. */
7780                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
7781                         eloop_register_timeout(0, 0,
7782                                                wpas_p2p_group_freq_conflict,
7783                                                iface, NULL);
7784                         /* If connection in progress is P2P connection, do not
7785                          * proceed for the connection. */
7786                         if (wpa_s == iface)
7787                                 return -1;
7788                         else
7789                                 return 0;
7790                 } else {
7791                         /* P2P connection has priority, disable the STA network
7792                          */
7793                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
7794                                                        ssid);
7795                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7796                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7797                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7798                                   ETH_ALEN);
7799                         /* If P2P connection is in progress, continue
7800                          * connecting...*/
7801                         if (wpa_s == iface)
7802                                 return 0;
7803                         else
7804                                 return -1;
7805                 }
7806         }
7807
7808         return 0;
7809 }
7810
7811
7812 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7813 {
7814         struct wpa_ssid *ssid = wpa_s->current_ssid;
7815
7816         if (ssid == NULL || !ssid->p2p_group)
7817                 return 0;
7818
7819         if (wpa_s->p2p_last_4way_hs_fail &&
7820             wpa_s->p2p_last_4way_hs_fail == ssid) {
7821                 u8 go_dev_addr[ETH_ALEN];
7822                 struct wpa_ssid *persistent;
7823
7824                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7825                                               ssid->ssid,
7826                                               ssid->ssid_len) <= 0) {
7827                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7828                         goto disconnect;
7829                 }
7830
7831                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7832                         MACSTR, MAC2STR(go_dev_addr));
7833                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7834                                                      ssid->ssid,
7835                                                      ssid->ssid_len);
7836                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7837                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7838                         goto disconnect;
7839                 }
7840                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7841                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7842                                persistent->id);
7843         disconnect:
7844                 wpa_s->p2p_last_4way_hs_fail = NULL;
7845                 /*
7846                  * Remove the group from a timeout to avoid issues with caller
7847                  * continuing to use the interface if this is on a P2P group
7848                  * interface.
7849                  */
7850                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7851                                        wpa_s, NULL);
7852                 return 1;
7853         }
7854
7855         wpa_s->p2p_last_4way_hs_fail = ssid;
7856         return 0;
7857 }
7858
7859
7860 #ifdef CONFIG_WPS_NFC
7861
7862 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7863                                              struct wpabuf *p2p)
7864 {
7865         struct wpabuf *ret;
7866         size_t wsc_len;
7867
7868         if (p2p == NULL) {
7869                 wpabuf_free(wsc);
7870                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7871                 return NULL;
7872         }
7873
7874         wsc_len = wsc ? wpabuf_len(wsc) : 0;
7875         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7876         if (ret == NULL) {
7877                 wpabuf_free(wsc);
7878                 wpabuf_free(p2p);
7879                 return NULL;
7880         }
7881
7882         wpabuf_put_be16(ret, wsc_len);
7883         if (wsc)
7884                 wpabuf_put_buf(ret, wsc);
7885         wpabuf_put_be16(ret, wpabuf_len(p2p));
7886         wpabuf_put_buf(ret, p2p);
7887
7888         wpabuf_free(wsc);
7889         wpabuf_free(p2p);
7890         wpa_hexdump_buf(MSG_DEBUG,
7891                         "P2P: Generated NFC connection handover message", ret);
7892
7893         if (ndef && ret) {
7894                 struct wpabuf *tmp;
7895                 tmp = ndef_build_p2p(ret);
7896                 wpabuf_free(ret);
7897                 if (tmp == NULL) {
7898                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7899                         return NULL;
7900                 }
7901                 ret = tmp;
7902         }
7903
7904         return ret;
7905 }
7906
7907
7908 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7909                              struct wpa_ssid **ssid, u8 *go_dev_addr)
7910 {
7911         struct wpa_supplicant *iface;
7912
7913         if (go_dev_addr)
7914                 os_memset(go_dev_addr, 0, ETH_ALEN);
7915         if (ssid)
7916                 *ssid = NULL;
7917         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7918                 if (iface->wpa_state < WPA_ASSOCIATING ||
7919                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7920                     !iface->current_ssid->p2p_group ||
7921                     iface->current_ssid->mode != WPAS_MODE_INFRA)
7922                         continue;
7923                 if (ssid)
7924                         *ssid = iface->current_ssid;
7925                 if (go_dev_addr)
7926                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7927                 return iface->assoc_freq;
7928         }
7929         return 0;
7930 }
7931
7932
7933 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7934                                           int ndef)
7935 {
7936         struct wpabuf *wsc, *p2p;
7937         struct wpa_ssid *ssid;
7938         u8 go_dev_addr[ETH_ALEN];
7939         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7940
7941         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7942                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7943                 return NULL;
7944         }
7945
7946         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7947             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7948                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7949                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7950                 return NULL;
7951         }
7952
7953         if (cli_freq == 0) {
7954                 wsc = wps_build_nfc_handover_req_p2p(
7955                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
7956         } else
7957                 wsc = NULL;
7958         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
7959                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7960                                          ssid ? ssid->ssid_len : 0);
7961
7962         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7963 }
7964
7965
7966 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7967                                           int ndef, int tag)
7968 {
7969         struct wpabuf *wsc, *p2p;
7970         struct wpa_ssid *ssid;
7971         u8 go_dev_addr[ETH_ALEN];
7972         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7973
7974         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7975                 return NULL;
7976
7977         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7978             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7979                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7980                 return NULL;
7981
7982         if (cli_freq == 0) {
7983                 wsc = wps_build_nfc_handover_sel_p2p(
7984                         wpa_s->parent->wps,
7985                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
7986                         DEV_PW_NFC_CONNECTION_HANDOVER,
7987                         wpa_s->conf->wps_nfc_dh_pubkey,
7988                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
7989         } else
7990                 wsc = NULL;
7991         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
7992                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7993                                          ssid ? ssid->ssid_len : 0);
7994
7995         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7996 }
7997
7998
7999 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8000                                    struct p2p_nfc_params *params)
8001 {
8002         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8003                    "connection handover (freq=%d)",
8004                    params->go_freq);
8005
8006         if (params->go_freq && params->go_ssid_len) {
8007                 wpa_s->p2p_wps_method = WPS_NFC;
8008                 wpa_s->pending_join_wps_method = WPS_NFC;
8009                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8010                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8011                           ETH_ALEN);
8012                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8013                                            params->go_ssid,
8014                                            params->go_ssid_len);
8015         }
8016
8017         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8018                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8019                                 params->go_freq, -1, 0, 1, 1);
8020 }
8021
8022
8023 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8024                                   struct p2p_nfc_params *params, int tag)
8025 {
8026         int res, persistent;
8027         struct wpa_ssid *ssid;
8028
8029         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8030                    "connection handover");
8031         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8032                 ssid = wpa_s->current_ssid;
8033                 if (ssid == NULL)
8034                         continue;
8035                 if (ssid->mode != WPAS_MODE_P2P_GO)
8036                         continue;
8037                 if (wpa_s->ap_iface == NULL)
8038                         continue;
8039                 break;
8040         }
8041         if (wpa_s == NULL) {
8042                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8043                 return -1;
8044         }
8045
8046         if (wpa_s->parent->p2p_oob_dev_pw_id !=
8047             DEV_PW_NFC_CONNECTION_HANDOVER &&
8048             !wpa_s->parent->p2p_oob_dev_pw) {
8049                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8050                 return -1;
8051         }
8052         res = wpas_ap_wps_add_nfc_pw(
8053                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
8054                 wpa_s->parent->p2p_oob_dev_pw,
8055                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
8056                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
8057         if (res)
8058                 return res;
8059
8060         if (!tag) {
8061                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8062                 return 0;
8063         }
8064
8065         if (!params->peer ||
8066             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8067                 return 0;
8068
8069         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8070                    " to join", MAC2STR(params->peer->p2p_device_addr));
8071
8072         wpa_s->global->p2p_invite_group = wpa_s;
8073         persistent = ssid->p2p_persistent_group &&
8074                 wpas_p2p_get_persistent(wpa_s->parent,
8075                                         params->peer->p2p_device_addr,
8076                                         ssid->ssid, ssid->ssid_len);
8077         wpa_s->parent->pending_invite_ssid_id = -1;
8078
8079         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8080                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8081                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8082                           wpa_s->global->p2p_dev_addr, persistent, 0,
8083                           wpa_s->parent->p2p_oob_dev_pw_id);
8084 }
8085
8086
8087 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8088                                     struct p2p_nfc_params *params,
8089                                     int forced_freq)
8090 {
8091         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8092                    "connection handover");
8093         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8094                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8095                                 forced_freq, -1, 0, 1, 1);
8096 }
8097
8098
8099 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8100                                     struct p2p_nfc_params *params,
8101                                     int forced_freq)
8102 {
8103         int res;
8104
8105         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8106                    "connection handover");
8107         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8108                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8109                                forced_freq, -1, 0, 1, 1);
8110         if (res)
8111                 return res;
8112
8113         res = wpas_p2p_listen(wpa_s, 60);
8114         if (res) {
8115                 p2p_unauthorize(wpa_s->global->p2p,
8116                                 params->peer->p2p_device_addr);
8117         }
8118
8119         return res;
8120 }
8121
8122
8123 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8124                                             const struct wpabuf *data,
8125                                             int sel, int tag, int forced_freq)
8126 {
8127         const u8 *pos, *end;
8128         u16 len, id;
8129         struct p2p_nfc_params params;
8130         int res;
8131
8132         os_memset(&params, 0, sizeof(params));
8133         params.sel = sel;
8134
8135         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8136
8137         pos = wpabuf_head(data);
8138         end = pos + wpabuf_len(data);
8139
8140         if (end - pos < 2) {
8141                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8142                            "attributes");
8143                 return -1;
8144         }
8145         len = WPA_GET_BE16(pos);
8146         pos += 2;
8147         if (len > end - pos) {
8148                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8149                            "attributes");
8150                 return -1;
8151         }
8152         params.wsc_attr = pos;
8153         params.wsc_len = len;
8154         pos += len;
8155
8156         if (end - pos < 2) {
8157                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8158                            "attributes");
8159                 return -1;
8160         }
8161         len = WPA_GET_BE16(pos);
8162         pos += 2;
8163         if (len > end - pos) {
8164                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8165                            "attributes");
8166                 return -1;
8167         }
8168         params.p2p_attr = pos;
8169         params.p2p_len = len;
8170         pos += len;
8171
8172         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8173                     params.wsc_attr, params.wsc_len);
8174         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8175                     params.p2p_attr, params.p2p_len);
8176         if (pos < end) {
8177                 wpa_hexdump(MSG_DEBUG,
8178                             "P2P: Ignored extra data after P2P attributes",
8179                             pos, end - pos);
8180         }
8181
8182         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8183         if (res)
8184                 return res;
8185
8186         if (params.next_step == NO_ACTION)
8187                 return 0;
8188
8189         if (params.next_step == BOTH_GO) {
8190                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8191                         MAC2STR(params.peer->p2p_device_addr));
8192                 return 0;
8193         }
8194
8195         if (params.next_step == PEER_CLIENT) {
8196                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8197                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8198                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8199                                 " ssid=\"%s\"",
8200                                 MAC2STR(params.peer->p2p_device_addr),
8201                                 params.go_freq,
8202                                 MAC2STR(params.go_dev_addr),
8203                                 wpa_ssid_txt(params.go_ssid,
8204                                              params.go_ssid_len));
8205                 } else {
8206                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8207                                 "peer=" MACSTR " freq=%d",
8208                                 MAC2STR(params.peer->p2p_device_addr),
8209                                 params.go_freq);
8210                 }
8211                 return 0;
8212         }
8213
8214         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8215                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8216                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8217                 return 0;
8218         }
8219
8220         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8221         wpa_s->p2p_oob_dev_pw = NULL;
8222
8223         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8224                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8225                            "received");
8226                 return -1;
8227         }
8228
8229         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8230         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8231         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8232                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8233         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8234                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8235         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8236
8237         if (tag) {
8238                 if (id < 0x10) {
8239                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8240                                    "peer OOB Device Password Id %u", id);
8241                         return -1;
8242                 }
8243                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8244                            "Device Password Id %u", id);
8245                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8246                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8247                                 params.oob_dev_pw_len -
8248                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
8249                 wpa_s->p2p_oob_dev_pw_id = id;
8250                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8251                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8252                         params.oob_dev_pw_len -
8253                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8254                 if (wpa_s->p2p_oob_dev_pw == NULL)
8255                         return -1;
8256
8257                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8258                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8259                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8260                         return -1;
8261         } else {
8262                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8263                            "without Device Password");
8264                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8265         }
8266
8267         switch (params.next_step) {
8268         case NO_ACTION:
8269         case BOTH_GO:
8270         case PEER_CLIENT:
8271                 /* already covered above */
8272                 return 0;
8273         case JOIN_GROUP:
8274                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8275         case AUTH_JOIN:
8276                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8277         case INIT_GO_NEG:
8278                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8279         case RESP_GO_NEG:
8280                 /* TODO: use own OOB Dev Pw */
8281                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8282         }
8283
8284         return -1;
8285 }
8286
8287
8288 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8289                              const struct wpabuf *data, int forced_freq)
8290 {
8291         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8292                 return -1;
8293
8294         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8295 }
8296
8297
8298 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8299                                  const struct wpabuf *req,
8300                                  const struct wpabuf *sel, int forced_freq)
8301 {
8302         struct wpabuf *tmp;
8303         int ret;
8304
8305         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8306                 return -1;
8307
8308         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8309
8310         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8311                           wpabuf_head(req), wpabuf_len(req));
8312         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8313                           wpabuf_head(sel), wpabuf_len(sel));
8314         if (forced_freq)
8315                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8316         tmp = ndef_parse_p2p(init ? sel : req);
8317         if (tmp == NULL) {
8318                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8319                 return -1;
8320         }
8321
8322         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8323                                                forced_freq);
8324         wpabuf_free(tmp);
8325
8326         return ret;
8327 }
8328
8329
8330 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8331 {
8332         const u8 *if_addr;
8333         int go_intent = wpa_s->conf->p2p_go_intent;
8334         struct wpa_supplicant *iface;
8335
8336         if (wpa_s->global->p2p == NULL)
8337                 return -1;
8338
8339         if (!enabled) {
8340                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8341                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8342                 {
8343                         if (!iface->ap_iface)
8344                                 continue;
8345                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8346                 }
8347                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8348                                                  0, NULL);
8349                 if (wpa_s->p2p_nfc_tag_enabled)
8350                         wpas_p2p_remove_pending_group_interface(wpa_s);
8351                 wpa_s->p2p_nfc_tag_enabled = 0;
8352                 return 0;
8353         }
8354
8355         if (wpa_s->global->p2p_disabled)
8356                 return -1;
8357
8358         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8359             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8360             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8361             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8362                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8363                            "to allow static handover cases");
8364                 return -1;
8365         }
8366
8367         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8368
8369         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8370         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8371         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8372         if (wpa_s->p2p_oob_dev_pw == NULL)
8373                 return -1;
8374         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8375
8376         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8377             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8378                 /*
8379                  * P2P Group Interface present and the command came on group
8380                  * interface, so enable the token for the current interface.
8381                  */
8382                 wpa_s->create_p2p_iface = 0;
8383         } else {
8384                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8385         }
8386
8387         if (wpa_s->create_p2p_iface) {
8388                 enum wpa_driver_if_type iftype;
8389                 /* Prepare to add a new interface for the group */
8390                 iftype = WPA_IF_P2P_GROUP;
8391                 if (go_intent == 15)
8392                         iftype = WPA_IF_P2P_GO;
8393                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8394                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8395                                    "interface for the group");
8396                         return -1;
8397                 }
8398
8399                 if_addr = wpa_s->pending_interface_addr;
8400         } else
8401                 if_addr = wpa_s->own_addr;
8402
8403         wpa_s->p2p_nfc_tag_enabled = enabled;
8404
8405         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8406                 struct hostapd_data *hapd;
8407                 if (iface->ap_iface == NULL)
8408                         continue;
8409                 hapd = iface->ap_iface->bss[0];
8410                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8411                 hapd->conf->wps_nfc_dh_pubkey =
8412                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8413                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8414                 hapd->conf->wps_nfc_dh_privkey =
8415                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8416                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8417                 hapd->conf->wps_nfc_dev_pw =
8418                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8419                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8420
8421                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8422                         wpa_dbg(iface, MSG_DEBUG,
8423                                 "P2P: Failed to enable NFC Tag for GO");
8424                 }
8425         }
8426         p2p_set_authorized_oob_dev_pw_id(
8427                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8428                 if_addr);
8429
8430         return 0;
8431 }
8432
8433 #endif /* CONFIG_WPS_NFC */
8434
8435
8436 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8437                                              struct wpa_used_freq_data *freqs,
8438                                              unsigned int num)
8439 {
8440         u8 curr_chan, cand, chan;
8441         unsigned int i;
8442
8443         /*
8444          * If possible, optimize the Listen channel to be a channel that is
8445          * already used by one of the other interfaces.
8446          */
8447         if (!wpa_s->conf->p2p_optimize_listen_chan)
8448                 return;
8449
8450         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8451                 return;
8452
8453         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8454         for (i = 0, cand = 0; i < num; i++) {
8455                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8456                 if (curr_chan == chan) {
8457                         cand = 0;
8458                         break;
8459                 }
8460
8461                 if (chan == 1 || chan == 6 || chan == 11)
8462                         cand = chan;
8463         }
8464
8465         if (cand) {
8466                 wpa_dbg(wpa_s, MSG_DEBUG,
8467                         "P2P: Update Listen channel to %u based on operating channel",
8468                         cand);
8469                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8470         }
8471 }
8472
8473
8474 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8475 {
8476         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8477                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8478                 return -1;
8479         }
8480
8481         /* TODO: Add CSA support */
8482         wpa_dbg(wpa_s, MSG_DEBUG, "Moving GO with CSA is not implemented");
8483         return -1;
8484 }
8485
8486
8487 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8488 {
8489         struct p2p_go_neg_results params;
8490         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8491
8492         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8493
8494         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8495                 current_ssid->frequency);
8496
8497         /* Stop the AP functionality */
8498         /* TODO: Should do this in a way that does not indicated to possible
8499          * P2P Clients in the group that the group is terminated. */
8500         wpa_supplicant_ap_deinit(wpa_s);
8501
8502         /* Reselect the GO frequency */
8503         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, NULL)) {
8504                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8505                 wpas_p2p_group_delete(wpa_s,
8506                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8507                 return;
8508         }
8509         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8510                 params.freq);
8511
8512         if (params.freq &&
8513             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8514                 wpa_printf(MSG_DEBUG,
8515                            "P2P: Selected freq (%u MHz) is not valid for P2P",
8516                            params.freq);
8517                 wpas_p2p_group_delete(wpa_s,
8518                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8519                 return;
8520         }
8521
8522         /* Update the frequency */
8523         current_ssid->frequency = params.freq;
8524         wpa_s->connect_without_scan = current_ssid;
8525         wpa_s->reassociate = 1;
8526         wpa_s->disconnected = 0;
8527         wpa_supplicant_req_scan(wpa_s, 0, 0);
8528 }
8529
8530
8531 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8532 {
8533         struct wpa_supplicant *wpa_s = eloop_ctx;
8534
8535         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8536                 return;
8537
8538         wpas_p2p_go_update_common_freqs(wpa_s);
8539
8540         /*
8541          * First, try a channel switch flow. If it is not supported or fails,
8542          * take down the GO and bring it up again.
8543          */
8544         if (wpas_p2p_move_go_csa(wpa_s) < 0)
8545                 wpas_p2p_move_go_no_csa(wpa_s);
8546 }
8547
8548
8549 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
8550 {
8551         struct wpa_supplicant *wpa_s = eloop_ctx;
8552         struct wpa_used_freq_data *freqs = NULL;
8553         unsigned int num = wpa_s->num_multichan_concurrent;
8554
8555         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8556         if (!freqs)
8557                 return;
8558
8559         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8560
8561         /* Previous attempt to move a GO was not possible -- try again. */
8562         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
8563                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
8564
8565         os_free(freqs);
8566 }
8567
8568
8569 /*
8570  * Consider moving a GO from its currently used frequency:
8571  * 1. It is possible that due to regulatory consideration the frequency
8572  *    can no longer be used and there is a need to evacuate the GO.
8573  * 2. It is possible that due to MCC considerations, it would be preferable
8574  *    to move the GO to a channel that is currently used by some other
8575  *    station interface.
8576  *
8577  * In case a frequency that became invalid is once again valid, cancel a
8578  * previously initiated GO frequency change.
8579  */
8580 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
8581                                             struct wpa_used_freq_data *freqs,
8582                                             unsigned int num)
8583 {
8584         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
8585         unsigned int timeout;
8586         int freq;
8587
8588         wpas_p2p_go_update_common_freqs(wpa_s);
8589
8590         freq = wpa_s->current_ssid->frequency;
8591         for (i = 0, invalid_freq = 0; i < num; i++) {
8592                 if (freqs[i].freq == freq) {
8593                         flags = freqs[i].flags;
8594
8595                         /* The channel is invalid, must change it */
8596                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
8597                                 wpa_dbg(wpa_s, MSG_DEBUG,
8598                                         "P2P: Freq=%d MHz no longer valid for GO",
8599                                         freq);
8600                                 invalid_freq = 1;
8601                         }
8602                 } else if (freqs[i].flags == 0) {
8603                         /* Freq is not used by any other station interface */
8604                         continue;
8605                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
8606                                                freqs[i].freq)) {
8607                         /* Freq is not valid for P2P use cases */
8608                         continue;
8609                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8610                            P2P_GO_FREQ_MOVE_SCM) {
8611                         policy_move = 1;
8612                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8613                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
8614                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
8615                         policy_move = 1;
8616                 }
8617         }
8618
8619         wpa_dbg(wpa_s, MSG_DEBUG,
8620                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
8621                 invalid_freq, policy_move, flags);
8622
8623         /*
8624          * The channel is valid, or we are going to have a policy move, so
8625          * cancel timeout.
8626          */
8627         if (!invalid_freq || policy_move) {
8628                 wpa_dbg(wpa_s, MSG_DEBUG,
8629                         "P2P: Cancel a GO move from freq=%d MHz", freq);
8630                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
8631
8632                 if (wpas_p2p_in_progress(wpa_s)) {
8633                         wpa_dbg(wpa_s, MSG_DEBUG,
8634                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
8635                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
8636                                              wpa_s, NULL);
8637                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
8638                                                wpas_p2p_reconsider_moving_go,
8639                                                wpa_s, NULL);
8640                         return;
8641                 }
8642         }
8643
8644         if (!invalid_freq && (!policy_move || flags != 0)) {
8645                 wpa_dbg(wpa_s, MSG_DEBUG,
8646                         "P2P: Not initiating a GO frequency change");
8647                 return;
8648         }
8649
8650         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
8651                 timeout = P2P_GO_FREQ_CHANGE_TIME;
8652         else
8653                 timeout = 0;
8654
8655         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
8656                 freq, timeout);
8657         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
8658         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
8659 }
8660
8661
8662 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
8663                                          struct wpa_used_freq_data *freqs,
8664                                          unsigned int num,
8665                                          enum wpas_p2p_channel_update_trig trig)
8666 {
8667         struct wpa_supplicant *ifs;
8668
8669         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
8670                              NULL);
8671
8672         /*
8673          * Travers all the radio interfaces, and for each GO interface, check
8674          * if there is a need to move the GO from the frequency it is using,
8675          * or in case the frequency is valid again, cancel the evacuation flow.
8676          */
8677         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
8678                          radio_list) {
8679                 if (ifs->current_ssid == NULL ||
8680                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
8681                         continue;
8682
8683                 /*
8684                  * The GO was just started or completed channel switch, no need
8685                  * to move it.
8686                  */
8687                 if (wpa_s == ifs &&
8688                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
8689                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
8690                         wpa_dbg(wpa_s, MSG_DEBUG,
8691                                 "P2P: GO move - schedule re-consideration");
8692                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
8693                                                wpas_p2p_reconsider_moving_go,
8694                                                wpa_s, NULL);
8695                         continue;
8696                 }
8697
8698                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
8699         }
8700 }
8701
8702
8703 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
8704 {
8705         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8706                 return;
8707
8708         wpas_p2p_update_channel_list(wpa_s,
8709                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
8710 }
8711
8712
8713 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
8714 {
8715         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
8716                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
8717                         "the management interface is being removed");
8718                 wpas_p2p_deinit_global(wpa_s->global);
8719         }
8720 }
8721
8722
8723 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
8724 {
8725         if (wpa_s->ap_iface->bss)
8726                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
8727         wpas_p2p_group_deinit(wpa_s);
8728 }