contrib/wpa/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  52  * it is currently using, but is no longer valid for P2P use cases.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 /**
  57  * Defines CSA parameters which are used when GO evacuates the no longer valid
  58  * channel (and if the driver supports channel switch).
  59  */
  60 #define P2P_GO_CSA_COUNT 7
  61 #define P2P_GO_CSA_BLOCK_TX 0
  62
  63 #ifndef P2P_MAX_CLIENT_IDLE
  64 /*
  65  * How many seconds to try to reconnect to the GO when connection in P2P client
  66  * role has been lost.
  67  */
  68 #define P2P_MAX_CLIENT_IDLE 10
  69 #endif /* P2P_MAX_CLIENT_IDLE */
  70
  71 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  72 /*
  73  * How many seconds to wait for initial 4-way handshake to get completed after
  74  * WPS provisioning step or after the re-invocation of a persistent group on a
  75  * P2P Client.
  76  */
  77 #define P2P_MAX_INITIAL_CONN_WAIT 10
  78 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  79
  80 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
  81 /*
  82  * How many seconds to wait for initial 4-way handshake to get completed after
  83  * WPS provisioning step on the GO. This controls the extra time the P2P
  84  * operation is considered to be in progress (e.g., to delay other scans) after
  85  * WPS provisioning has been completed on the GO during group formation.
  86  */
  87 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
  88 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
  89
  90 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
  91 /*
  92  * How many seconds to wait for initial 4-way handshake to get completed after
  93  * re-invocation of a persistent group on the GO when the client is expected
  94  * to connect automatically (no user interaction).
  95  */
  96 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
  97 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
  98
  99 #define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"
 100
 101 /*
 102  * How many seconds to wait to re-attempt to move GOs, in case previous attempt
 103  * was not possible.
 104  */
 105 #define P2P_RECONSIDER_GO_MOVE_DELAY 30
 106
 107 enum p2p_group_removal_reason {
 108         P2P_GROUP_REMOVAL_UNKNOWN,
 109         P2P_GROUP_REMOVAL_SILENT,
 110         P2P_GROUP_REMOVAL_FORMATION_FAILED,
 111         P2P_GROUP_REMOVAL_REQUESTED,
 112         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
 113         P2P_GROUP_REMOVAL_UNAVAILABLE,
 114         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
 115         P2P_GROUP_REMOVAL_PSK_FAILURE,
 116         P2P_GROUP_REMOVAL_FREQ_CONFLICT,
 117         P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL
 118 };
 119
 120
 121 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
 122 static struct wpa_supplicant *
 123 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
 124                          int go);
 125 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
 126                                const u8 *ssid, size_t ssid_len);
 127 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
 128                                 int *force_freq, int *pref_freq, int go,
 129                                 unsigned int *pref_freq_list,
 130                                 unsigned int *num_pref_freq);
 131 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 132                                    const u8 *ssid, size_t ssid_len);
 133 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 134 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 135                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 136                          int auto_join, int freq,
 137                          const u8 *ssid, size_t ssid_len);
 138 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 139 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 140 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 141 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 142 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 143                                              void *timeout_ctx);
 144 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 145 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 146                                        int group_added);
 147 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 148 static void wpas_stop_listen(void *ctx);
 149 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
 150 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
 151 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 152                                         enum wpa_driver_if_type type);
 153 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
 154                                             int already_deleted);
 155 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
 156                                              struct wpa_used_freq_data *freqs,
 157                                              unsigned int num);
 158 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx);
 159 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq);
 160 static void
 161 wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
 162                              struct wpa_used_freq_data *freqs, unsigned int num,
 163                              enum wpas_p2p_channel_update_trig trig);
 164 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx);
 165
 166
 167 /*
 168  * Get the number of concurrent channels that the HW can operate, but that are
 169  * currently not in use by any of the wpa_supplicant interfaces.
 170  */
 171 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 172 {
 173         int *freqs;
 174         int num, unused;
 175
 176         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 177         if (!freqs)
 178                 return -1;
 179
 180         num = get_shared_radio_freqs(wpa_s, freqs,
 181                                      wpa_s->num_multichan_concurrent);
 182         os_free(freqs);
 183
 184         unused = wpa_s->num_multichan_concurrent - num;
 185         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 186         return unused;
 187 }
 188
 189
 190 /*
 191  * Get the frequencies that are currently in use by one or more of the virtual
 192  * interfaces, and that are also valid for P2P operation.
 193  */
 194 static unsigned int
 195 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 196                           struct wpa_used_freq_data *p2p_freqs,
 197                           unsigned int len)
 198 {
 199         struct wpa_used_freq_data *freqs;
 200         unsigned int num, i, j;
 201
 202         freqs = os_calloc(wpa_s->num_multichan_concurrent,
 203                           sizeof(struct wpa_used_freq_data));
 204         if (!freqs)
 205                 return 0;
 206
 207         num = get_shared_radio_freqs_data(wpa_s, freqs,
 208                                           wpa_s->num_multichan_concurrent);
 209
 210         os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
 211
 212         for (i = 0, j = 0; i < num && j < len; i++) {
 213                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
 214                         p2p_freqs[j++] = freqs[i];
 215         }
 216
 217         os_free(freqs);
 218
 219         dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
 220
 221         return j;
 222 }
 223
 224
 225 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 226                                              int freq)
 227 {
 228         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 229                 return;
 230
 231         /* Use the wpa_s used to control the P2P Device operation */
 232         wpa_s = wpa_s->global->p2p_init_wpa_s;
 233
 234         if (wpa_s->conf->p2p_ignore_shared_freq &&
 235             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 236             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 237                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 238                            freq);
 239                 freq = 0;
 240         }
 241         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 242 }
 243
 244
 245 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 246                                       struct wpa_scan_results *scan_res)
 247 {
 248         size_t i;
 249
 250         if (wpa_s->p2p_scan_work) {
 251                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 252                 wpa_s->p2p_scan_work = NULL;
 253                 radio_work_done(work);
 254         }
 255
 256         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 257                 return;
 258
 259         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 260                    (int) scan_res->num);
 261
 262         for (i = 0; i < scan_res->num; i++) {
 263                 struct wpa_scan_res *bss = scan_res->res[i];
 264                 struct os_reltime time_tmp_age, entry_ts;
 265                 const u8 *ies;
 266                 size_t ies_len;
 267
 268                 time_tmp_age.sec = bss->age / 1000;
 269                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 270                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 271
 272                 ies = (const u8 *) (bss + 1);
 273                 ies_len = bss->ie_len;
 274                 if (bss->beacon_ie_len > 0 &&
 275                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 276                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 277                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 278                                    MACSTR, MAC2STR(bss->bssid));
 279                         ies = ies + ies_len;
 280                         ies_len = bss->beacon_ie_len;
 281                 }
 282
 283
 284                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 285                                          bss->freq, &entry_ts, bss->level,
 286                                          ies, ies_len) > 0)
 287                         break;
 288         }
 289
 290         p2p_scan_res_handled(wpa_s->global->p2p);
 291 }
 292
 293
 294 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 295 {
 296         struct wpa_supplicant *wpa_s = work->wpa_s;
 297         struct wpa_driver_scan_params *params = work->ctx;
 298         int ret;
 299
 300         if (deinit) {
 301                 if (!work->started) {
 302                         wpa_scan_free_params(params);
 303                         return;
 304                 }
 305
 306                 wpa_s->p2p_scan_work = NULL;
 307                 return;
 308         }
 309
 310         if (wpa_s->clear_driver_scan_cache) {
 311                 wpa_printf(MSG_DEBUG,
 312                            "Request driver to clear scan cache due to local BSS flush");
 313                 params->only_new_results = 1;
 314         }
 315         ret = wpa_drv_scan(wpa_s, params);
 316         if (ret == 0)
 317                 wpa_s->curr_scan_cookie = params->scan_cookie;
 318         wpa_scan_free_params(params);
 319         work->ctx = NULL;
 320         if (ret) {
 321                 radio_work_done(work);
 322                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 323                 return;
 324         }
 325
 326         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 327         os_get_reltime(&wpa_s->scan_trigger_time);
 328         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 329         wpa_s->own_scan_requested = 1;
 330         wpa_s->clear_driver_scan_cache = 0;
 331         wpa_s->p2p_scan_work = work;
 332 }
 333
 334
 335 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 336                                           int freq)
 337 {
 338         if (wpa_s->global->p2p_24ghz_social_channels &&
 339             (freq == 2412 || freq == 2437 || freq == 2462)) {
 340                 /*
 341                  * Search all social channels regardless of whether these have
 342                  * been disabled for P2P operating channel use to avoid missing
 343                  * peers.
 344                  */
 345                 return 1;
 346         }
 347         return p2p_supported_freq(wpa_s->global->p2p, freq);
 348 }
 349
 350
 351 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 352                          unsigned int num_req_dev_types,
 353                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 354 {
 355         struct wpa_supplicant *wpa_s = ctx;
 356         struct wpa_driver_scan_params *params = NULL;
 357         struct wpabuf *wps_ie, *ies;
 358         unsigned int num_channels = 0;
 359         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 360         size_t ielen;
 361         u8 *n, i;
 362         unsigned int bands;
 363
 364         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 365                 return -1;
 366
 367         if (wpa_s->p2p_scan_work) {
 368                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 369                 return -1;
 370         }
 371
 372         params = os_zalloc(sizeof(*params));
 373         if (params == NULL)
 374                 return -1;
 375
 376         /* P2P Wildcard SSID */
 377         params->num_ssids = 1;
 378         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 379         if (n == NULL)
 380                 goto fail;
 381         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 382         params->ssids[0].ssid = n;
 383         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 384
 385         wpa_s->wps->dev.p2p = 1;
 386         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 387                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 388                                         num_req_dev_types, req_dev_types);
 389         if (wps_ie == NULL)
 390                 goto fail;
 391
 392         switch (type) {
 393         case P2P_SCAN_SOCIAL:
 394                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 395                                           sizeof(int));
 396                 if (params->freqs == NULL)
 397                         goto fail;
 398                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 399                         if (wpas_p2p_search_social_channel(
 400                                     wpa_s, social_channels_freq[i]))
 401                                 params->freqs[num_channels++] =
 402                                         social_channels_freq[i];
 403                 }
 404                 params->freqs[num_channels++] = 0;
 405                 break;
 406         case P2P_SCAN_FULL:
 407                 break;
 408         case P2P_SCAN_SPECIFIC:
 409                 params->freqs = os_calloc(2, sizeof(int));
 410                 if (params->freqs == NULL)
 411                         goto fail;
 412                 params->freqs[0] = freq;
 413                 params->freqs[1] = 0;
 414                 break;
 415         case P2P_SCAN_SOCIAL_PLUS_ONE:
 416                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 417                                           sizeof(int));
 418                 if (params->freqs == NULL)
 419                         goto fail;
 420                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 421                         if (wpas_p2p_search_social_channel(
 422                                     wpa_s, social_channels_freq[i]))
 423                                 params->freqs[num_channels++] =
 424                                         social_channels_freq[i];
 425                 }
 426                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 427                         params->freqs[num_channels++] = freq;
 428                 params->freqs[num_channels++] = 0;
 429                 break;
 430         }
 431
 432         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 433         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 434         if (ies == NULL) {
 435                 wpabuf_free(wps_ie);
 436                 goto fail;
 437         }
 438         wpabuf_put_buf(ies, wps_ie);
 439         wpabuf_free(wps_ie);
 440
 441         bands = wpas_get_bands(wpa_s, params->freqs);
 442         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id, bands);
 443
 444         params->p2p_probe = 1;
 445         n = os_malloc(wpabuf_len(ies));
 446         if (n == NULL) {
 447                 wpabuf_free(ies);
 448                 goto fail;
 449         }
 450         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 451         params->extra_ies = n;
 452         params->extra_ies_len = wpabuf_len(ies);
 453         wpabuf_free(ies);
 454
 455         radio_remove_works(wpa_s, "p2p-scan", 0);
 456         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 457                            params) < 0)
 458                 goto fail;
 459         return 0;
 460
 461 fail:
 462         wpa_scan_free_params(params);
 463         return -1;
 464 }
 465
 466
 467 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 468 {
 469         switch (p2p_group_interface) {
 470         case P2P_GROUP_INTERFACE_PENDING:
 471                 return WPA_IF_P2P_GROUP;
 472         case P2P_GROUP_INTERFACE_GO:
 473                 return WPA_IF_P2P_GO;
 474         case P2P_GROUP_INTERFACE_CLIENT:
 475                 return WPA_IF_P2P_CLIENT;
 476         }
 477
 478         return WPA_IF_P2P_GROUP;
 479 }
 480
 481
 482 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 483                                                   const u8 *ssid,
 484                                                   size_t ssid_len, int *go)
 485 {
 486         struct wpa_ssid *s;
 487
 488         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 489                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 490                         if (s->disabled != 0 || !s->p2p_group ||
 491                             s->ssid_len != ssid_len ||
 492                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 493                                 continue;
 494                         if (s->mode == WPAS_MODE_P2P_GO &&
 495                             s != wpa_s->current_ssid)
 496                                 continue;
 497                         if (go)
 498                                 *go = s->mode == WPAS_MODE_P2P_GO;
 499                         return wpa_s;
 500                 }
 501         }
 502
 503         return NULL;
 504 }
 505
 506
 507 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 508 {
 509         struct wpa_supplicant *wpa_s = eloop_ctx;
 510         wpa_printf(MSG_DEBUG,
 511                    "P2P: Complete previously requested removal of %s",
 512                    wpa_s->ifname);
 513         wpas_p2p_disconnect(wpa_s);
 514 }
 515
 516
 517 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 518                                       struct wpa_supplicant *calling_wpa_s)
 519 {
 520         if (calling_wpa_s == wpa_s && wpa_s &&
 521             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 522                 /*
 523                  * The calling wpa_s instance is going to be removed. Do that
 524                  * from an eloop callback to keep the instance available until
 525                  * the caller has returned. This my be needed, e.g., to provide
 526                  * control interface responses on the per-interface socket.
 527                  */
 528                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 529                                            wpa_s, NULL) < 0)
 530                         return -1;
 531                 return 0;
 532         }
 533
 534         return wpas_p2p_disconnect(wpa_s);
 535 }
 536
 537
 538 /* Determine total number of clients in active groups where we are the GO */
 539 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 540 {
 541         unsigned int count = 0;
 542         struct wpa_ssid *s;
 543
 544         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 545                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 546                         wpa_printf(MSG_DEBUG,
 547                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 548                                    wpa_s, s, s->disabled, s->p2p_group,
 549                                    s->mode);
 550                         if (!s->disabled && s->p2p_group &&
 551                             s->mode == WPAS_MODE_P2P_GO) {
 552                                 count += p2p_get_group_num_members(
 553                                         wpa_s->p2p_group);
 554                         }
 555                 }
 556         }
 557
 558         return count;
 559 }
 560
 561
 562 static unsigned int p2p_is_active_persistent_group(struct wpa_supplicant *wpa_s)
 563 {
 564         return !wpa_s->p2p_mgmt && wpa_s->current_ssid &&
 565                 !wpa_s->current_ssid->disabled &&
 566                 wpa_s->current_ssid->p2p_group &&
 567                 wpa_s->current_ssid->p2p_persistent_group;
 568 }
 569
 570
 571 static unsigned int p2p_is_active_persistent_go(struct wpa_supplicant *wpa_s)
 572 {
 573         return p2p_is_active_persistent_group(wpa_s) &&
 574                 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO;
 575 }
 576
 577
 578 /* Find an interface for a P2P group where we are the GO */
 579 static struct wpa_supplicant *
 580 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 581 {
 582         struct wpa_supplicant *save = NULL;
 583
 584         if (!wpa_s)
 585                 return NULL;
 586
 587         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 588                 if (!p2p_is_active_persistent_go(wpa_s))
 589                         continue;
 590
 591                 /* Prefer a group with connected clients */
 592                 if (p2p_get_group_num_members(wpa_s->p2p_group))
 593                         return wpa_s;
 594                 save = wpa_s;
 595         }
 596
 597         /* No group with connected clients, so pick the one without (if any) */
 598         return save;
 599 }
 600
 601
 602 static unsigned int p2p_is_active_persistent_cli(struct wpa_supplicant *wpa_s)
 603 {
 604         return p2p_is_active_persistent_group(wpa_s) &&
 605                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
 606 }
 607
 608
 609 /* Find an interface for a P2P group where we are the P2P Client */
 610 static struct wpa_supplicant *
 611 wpas_p2p_get_cli_group(struct wpa_supplicant *wpa_s)
 612 {
 613         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 614                 if (p2p_is_active_persistent_cli(wpa_s))
 615                         return wpa_s;
 616         }
 617
 618         return NULL;
 619 }
 620
 621
 622 /* Find a persistent group where we are the GO */
 623 static struct wpa_ssid *
 624 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
 625 {
 626         struct wpa_ssid *s;
 627
 628         for (s = wpa_s->conf->ssid; s; s = s->next) {
 629                 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
 630                         return s;
 631         }
 632
 633         return NULL;
 634 }
 635
 636
 637 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role,
 638                                 unsigned int *force_freq,
 639                                 unsigned int *pref_freq)
 640 {
 641         struct wpa_supplicant *wpa_s = ctx;
 642         struct wpa_ssid *s;
 643         u8 conncap = P2PS_SETUP_NONE;
 644         unsigned int owned_members = 0;
 645         struct wpa_supplicant *go_wpa_s, *cli_wpa_s;
 646         struct wpa_ssid *persistent_go;
 647         int p2p_no_group_iface;
 648         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
 649
 650         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 651
 652         if (force_freq)
 653                 *force_freq = 0;
 654         if (pref_freq)
 655                 *pref_freq = 0;
 656
 657         size = P2P_MAX_PREF_CHANNELS;
 658         if (force_freq && pref_freq &&
 659             !wpas_p2p_setup_freqs(wpa_s, 0, (int *) force_freq,
 660                                   (int *) pref_freq, 0, pref_freq_list, &size))
 661                 wpas_p2p_set_own_freq_preference(wpa_s,
 662                                                  *force_freq ? *force_freq :
 663                                                  *pref_freq);
 664
 665         /*
 666          * For non-concurrent capable devices:
 667          * If persistent_go, then no new.
 668          * If GO, then no client.
 669          * If client, then no GO.
 670          */
 671         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 672         if (go_wpa_s)
 673                 owned_members = p2p_get_group_num_members(go_wpa_s->p2p_group);
 674         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 675         p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s);
 676         cli_wpa_s = wpas_p2p_get_cli_group(wpa_s);
 677
 678         wpa_printf(MSG_DEBUG,
 679                    "P2P: GO(iface)=%p members=%u CLI(iface)=%p persistent(ssid)=%p",
 680                    go_wpa_s, owned_members, cli_wpa_s, persistent_go);
 681
 682         /* If not concurrent, restrict our choices */
 683         if (p2p_no_group_iface) {
 684                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 685
 686                 if (cli_wpa_s)
 687                         return P2PS_SETUP_NONE;
 688
 689                 if (go_wpa_s) {
 690                         if (role == P2PS_SETUP_CLIENT ||
 691                             incoming == P2PS_SETUP_GROUP_OWNER ||
 692                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 693                                 return P2PS_SETUP_NONE;
 694
 695                         return P2PS_SETUP_GROUP_OWNER;
 696                 }
 697
 698                 if (persistent_go) {
 699                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 700                                 if (!incoming)
 701                                         return P2PS_SETUP_GROUP_OWNER |
 702                                                 P2PS_SETUP_CLIENT;
 703                                 if (incoming == P2PS_SETUP_NEW) {
 704                                         u8 r;
 705
 706                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 707                                             (r & 1))
 708                                                 return P2PS_SETUP_CLIENT;
 709                                         return P2PS_SETUP_GROUP_OWNER;
 710                                 }
 711                         }
 712                 }
 713         }
 714
 715         /* If a required role has been specified, handle it here */
 716         if (role && role != P2PS_SETUP_NEW) {
 717                 switch (incoming) {
 718                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 719                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 720                         /*
 721                          * Peer has an active GO, so if the role allows it and
 722                          * we do not have any active roles, become client.
 723                          */
 724                         if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s &&
 725                             !cli_wpa_s)
 726                                 return P2PS_SETUP_CLIENT;
 727
 728                         /* fall through */
 729
 730                 case P2PS_SETUP_NONE:
 731                 case P2PS_SETUP_NEW:
 732                         conncap = role;
 733                         goto grp_owner;
 734
 735                 case P2PS_SETUP_GROUP_OWNER:
 736                         /*
 737                          * Must be a complimentary role - cannot be a client to
 738                          * more than one peer.
 739                          */
 740                         if (incoming == role || cli_wpa_s)
 741                                 return P2PS_SETUP_NONE;
 742
 743                         return P2PS_SETUP_CLIENT;
 744
 745                 case P2PS_SETUP_CLIENT:
 746                         /* Must be a complimentary role */
 747                         if (incoming != role) {
 748                                 conncap = P2PS_SETUP_GROUP_OWNER;
 749                                 goto grp_owner;
 750                         }
 751                         /* fall through */
 752
 753                 default:
 754                         return P2PS_SETUP_NONE;
 755                 }
 756         }
 757
 758         /*
 759          * For now, we only will support ownership of one group, and being a
 760          * client of one group. Therefore, if we have either an existing GO
 761          * group, or an existing client group, we will not do a new GO
 762          * negotiation, but rather try to re-use the existing groups.
 763          */
 764         switch (incoming) {
 765         case P2PS_SETUP_NONE:
 766         case P2PS_SETUP_NEW:
 767                 if (cli_wpa_s)
 768                         conncap = P2PS_SETUP_GROUP_OWNER;
 769                 else if (!owned_members)
 770                         conncap = P2PS_SETUP_NEW;
 771                 else if (incoming == P2PS_SETUP_NONE)
 772                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 773                 else
 774                         conncap = P2PS_SETUP_CLIENT;
 775                 break;
 776
 777         case P2PS_SETUP_CLIENT:
 778                 conncap = P2PS_SETUP_GROUP_OWNER;
 779                 break;
 780
 781         case P2PS_SETUP_GROUP_OWNER:
 782                 if (!cli_wpa_s)
 783                         conncap = P2PS_SETUP_CLIENT;
 784                 break;
 785
 786         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 787         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 788                 if (cli_wpa_s)
 789                         conncap = P2PS_SETUP_GROUP_OWNER;
 790                 else {
 791                         u8 r;
 792
 793                         if (os_get_random(&r, sizeof(r)) < 0 ||
 794                             (r & 1))
 795                                 conncap = P2PS_SETUP_CLIENT;
 796                         else
 797                                 conncap = P2PS_SETUP_GROUP_OWNER;
 798                 }
 799                 break;
 800
 801         default:
 802                 return P2PS_SETUP_NONE;
 803         }
 804
 805 grp_owner:
 806         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 807             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 808                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 809                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 810
 811                 s = wpas_p2p_get_persistent_go(wpa_s);
 812                 if (!s && !go_wpa_s && p2p_no_group_iface) {
 813                         p2p_set_intended_addr(wpa_s->global->p2p,
 814                                               wpa_s->p2p_mgmt ?
 815                                               wpa_s->parent->own_addr :
 816                                               wpa_s->own_addr);
 817                 } else if (!s && !go_wpa_s) {
 818                         if (wpas_p2p_add_group_interface(wpa_s,
 819                                                          WPA_IF_P2P_GROUP) < 0) {
 820                                 wpa_printf(MSG_ERROR,
 821                                            "P2P: Failed to allocate a new interface for the group");
 822                                 return P2PS_SETUP_NONE;
 823                         }
 824                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 825                         p2p_set_intended_addr(wpa_s->global->p2p,
 826                                               wpa_s->pending_interface_addr);
 827                 }
 828         }
 829
 830         return conncap;
 831 }
 832
 833
 834 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 835                                  enum p2p_group_removal_reason removal_reason)
 836 {
 837         struct wpa_ssid *ssid;
 838         char *gtype;
 839         const char *reason;
 840
 841         ssid = wpa_s->current_ssid;
 842         if (ssid == NULL) {
 843                 /*
 844                  * The current SSID was not known, but there may still be a
 845                  * pending P2P group interface waiting for provisioning or a
 846                  * P2P group that is trying to reconnect.
 847                  */
 848                 ssid = wpa_s->conf->ssid;
 849                 while (ssid) {
 850                         if (ssid->p2p_group && ssid->disabled != 2)
 851                                 break;
 852                         ssid = ssid->next;
 853                 }
 854                 if (ssid == NULL &&
 855                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 856                 {
 857                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 858                                    "not found");
 859                         return -1;
 860                 }
 861         }
 862         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 863                 gtype = "GO";
 864         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 865                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 866                 wpa_s->reassociate = 0;
 867                 wpa_s->disconnected = 1;
 868                 gtype = "client";
 869         } else
 870                 gtype = "GO";
 871
 872         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 873                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 874
 875         if (os_strcmp(gtype, "client") == 0) {
 876                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 877                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 878                                                 wpa_s, NULL)) {
 879                         wpa_printf(MSG_DEBUG,
 880                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 881                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 882                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 883                                              wpa_s, NULL);
 884                 }
 885         }
 886
 887         if (wpa_s->cross_connect_in_use) {
 888                 wpa_s->cross_connect_in_use = 0;
 889                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
 890                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 891                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 892         }
 893         switch (removal_reason) {
 894         case P2P_GROUP_REMOVAL_REQUESTED:
 895                 reason = " reason=REQUESTED";
 896                 break;
 897         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 898                 reason = " reason=FORMATION_FAILED";
 899                 break;
 900         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 901                 reason = " reason=IDLE";
 902                 break;
 903         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 904                 reason = " reason=UNAVAILABLE";
 905                 break;
 906         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 907                 reason = " reason=GO_ENDING_SESSION";
 908                 break;
 909         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 910                 reason = " reason=PSK_FAILURE";
 911                 break;
 912         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 913                 reason = " reason=FREQ_CONFLICT";
 914                 break;
 915         default:
 916                 reason = "";
 917                 break;
 918         }
 919         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 920                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
 921                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 922                                wpa_s->ifname, gtype, reason);
 923         }
 924
 925         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 926                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 927         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 928                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 929         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 930                                  wpa_s->p2pdev, NULL) > 0) {
 931                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 932                            "timeout");
 933                 wpa_s->p2p_in_provisioning = 0;
 934                 wpas_p2p_group_formation_failed(wpa_s, 1);
 935         }
 936
 937         wpa_s->p2p_in_invitation = 0;
 938         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
 939         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
 940
 941         /*
 942          * Make sure wait for the first client does not remain active after the
 943          * group has been removed.
 944          */
 945         wpa_s->global->p2p_go_wait_client.sec = 0;
 946
 947         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 948                 struct wpa_global *global;
 949                 char *ifname;
 950                 enum wpa_driver_if_type type;
 951                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 952                         wpa_s->ifname);
 953                 global = wpa_s->global;
 954                 ifname = os_strdup(wpa_s->ifname);
 955                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 956                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 957                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 958                 wpa_s = global->ifaces;
 959                 if (wpa_s && ifname)
 960                         wpa_drv_if_remove(wpa_s, type, ifname);
 961                 os_free(ifname);
 962                 return 1;
 963         }
 964
 965         /*
 966          * The primary interface was used for P2P group operations, so
 967          * need to reset its p2pdev.
 968          */
 969         wpa_s->p2pdev = wpa_s->parent;
 970
 971         if (!wpa_s->p2p_go_group_formation_completed) {
 972                 wpa_s->global->p2p_group_formation = NULL;
 973                 wpa_s->p2p_in_provisioning = 0;
 974         }
 975
 976         wpa_s->show_group_started = 0;
 977         os_free(wpa_s->go_params);
 978         wpa_s->go_params = NULL;
 979
 980         os_free(wpa_s->p2p_group_common_freqs);
 981         wpa_s->p2p_group_common_freqs = NULL;
 982         wpa_s->p2p_group_common_freqs_num = 0;
 983         wpa_s->p2p_go_do_acs = 0;
 984
 985         wpa_s->waiting_presence_resp = 0;
 986
 987         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 988         if (ssid && (ssid->p2p_group ||
 989                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 990                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 991                 int id = ssid->id;
 992                 if (ssid == wpa_s->current_ssid) {
 993                         wpa_sm_set_config(wpa_s->wpa, NULL);
 994                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 995                         wpa_s->current_ssid = NULL;
 996                 }
 997                 /*
 998                  * Networks objects created during any P2P activities are not
 999                  * exposed out as they might/will confuse certain non-P2P aware
1000                  * applications since these network objects won't behave like
1001                  * regular ones.
1002                  *
1003                  * Likewise, we don't send out network removed signals for such
1004                  * network objects.
1005                  */
1006                 wpa_config_remove_network(wpa_s->conf, id);
1007                 wpa_supplicant_clear_status(wpa_s);
1008                 wpa_supplicant_cancel_sched_scan(wpa_s);
1009         } else {
1010                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
1011                            "found");
1012         }
1013         if (wpa_s->ap_iface)
1014                 wpa_supplicant_ap_deinit(wpa_s);
1015         else
1016                 wpa_drv_deinit_p2p_cli(wpa_s);
1017
1018         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1019
1020         return 0;
1021 }
1022
1023
1024 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
1025                                      u8 *go_dev_addr,
1026                                      const u8 *ssid, size_t ssid_len)
1027 {
1028         struct wpa_bss *bss;
1029         const u8 *bssid;
1030         struct wpabuf *p2p;
1031         u8 group_capab;
1032         const u8 *addr;
1033
1034         if (wpa_s->go_params)
1035                 bssid = wpa_s->go_params->peer_interface_addr;
1036         else
1037                 bssid = wpa_s->bssid;
1038
1039         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
1040         if (bss == NULL && wpa_s->go_params &&
1041             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
1042                 bss = wpa_bss_get_p2p_dev_addr(
1043                         wpa_s, wpa_s->go_params->peer_device_addr);
1044         if (bss == NULL) {
1045                 u8 iface_addr[ETH_ALEN];
1046                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1047                                            iface_addr) == 0)
1048                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1049         }
1050         if (bss == NULL) {
1051                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1052                            "group is persistent - BSS " MACSTR " not found",
1053                            MAC2STR(bssid));
1054                 return 0;
1055         }
1056
1057         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1058         if (p2p == NULL)
1059                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1060                                                          P2P_IE_VENDOR_TYPE);
1061         if (p2p == NULL) {
1062                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1063                            "group is persistent - BSS " MACSTR
1064                            " did not include P2P IE", MAC2STR(bssid));
1065                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1066                             (u8 *) (bss + 1), bss->ie_len);
1067                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1068                             ((u8 *) bss + 1) + bss->ie_len,
1069                             bss->beacon_ie_len);
1070                 return 0;
1071         }
1072
1073         group_capab = p2p_get_group_capab(p2p);
1074         addr = p2p_get_go_dev_addr(p2p);
1075         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1076                    "group_capab=0x%x", group_capab);
1077         if (addr) {
1078                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1079                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1080                            MAC2STR(addr));
1081         } else
1082                 os_memset(go_dev_addr, 0, ETH_ALEN);
1083         wpabuf_free(p2p);
1084
1085         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1086                    "go_dev_addr=" MACSTR,
1087                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1088
1089         return !!(group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP);
1090 }
1091
1092
1093 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1094                                            struct wpa_ssid *ssid,
1095                                            const u8 *go_dev_addr)
1096 {
1097         struct wpa_ssid *s;
1098         int changed = 0;
1099
1100         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1101                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1102         for (s = wpa_s->conf->ssid; s; s = s->next) {
1103                 if (s->disabled == 2 &&
1104                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1105                     s->ssid_len == ssid->ssid_len &&
1106                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1107                         break;
1108         }
1109
1110         if (s) {
1111                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1112                            "entry");
1113                 if (ssid->passphrase && !s->passphrase)
1114                         changed = 1;
1115                 else if (ssid->passphrase && s->passphrase &&
1116                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1117                         changed = 1;
1118         } else {
1119                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1120                            "entry");
1121                 changed = 1;
1122                 s = wpa_config_add_network(wpa_s->conf);
1123                 if (s == NULL)
1124                         return -1;
1125
1126                 /*
1127                  * Instead of network_added we emit persistent_group_added
1128                  * notification. Also to keep the defense checks in
1129                  * persistent_group obj registration method, we set the
1130                  * relevant flags in s to designate it as a persistent group.
1131                  */
1132                 s->p2p_group = 1;
1133                 s->p2p_persistent_group = 1;
1134                 wpas_notify_persistent_group_added(wpa_s, s);
1135                 wpa_config_set_network_defaults(s);
1136         }
1137
1138         s->p2p_group = 1;
1139         s->p2p_persistent_group = 1;
1140         s->disabled = 2;
1141         s->bssid_set = 1;
1142         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1143         s->mode = ssid->mode;
1144         s->auth_alg = WPA_AUTH_ALG_OPEN;
1145         s->key_mgmt = WPA_KEY_MGMT_PSK;
1146         s->proto = WPA_PROTO_RSN;
1147         s->pbss = ssid->pbss;
1148         s->pairwise_cipher = ssid->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP;
1149         s->export_keys = 1;
1150         if (ssid->passphrase) {
1151                 os_free(s->passphrase);
1152                 s->passphrase = os_strdup(ssid->passphrase);
1153         }
1154         if (ssid->psk_set) {
1155                 s->psk_set = 1;
1156                 os_memcpy(s->psk, ssid->psk, 32);
1157         }
1158         if (s->passphrase && !s->psk_set)
1159                 wpa_config_update_psk(s);
1160         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1161                 os_free(s->ssid);
1162                 s->ssid = os_malloc(ssid->ssid_len);
1163         }
1164         if (s->ssid) {
1165                 s->ssid_len = ssid->ssid_len;
1166                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1167         }
1168         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1169                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1170                 wpa_s->global->add_psk = NULL;
1171                 changed = 1;
1172         }
1173
1174         if (changed && wpa_s->conf->update_config &&
1175             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1176                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1177         }
1178
1179         return s->id;
1180 }
1181
1182
1183 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1184                                                  const u8 *addr)
1185 {
1186         struct wpa_ssid *ssid, *s;
1187         u8 *n;
1188         size_t i;
1189         int found = 0;
1190         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1191
1192         ssid = wpa_s->current_ssid;
1193         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1194             !ssid->p2p_persistent_group)
1195                 return;
1196
1197         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1198                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1199                         continue;
1200
1201                 if (s->ssid_len == ssid->ssid_len &&
1202                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1203                         break;
1204         }
1205
1206         if (s == NULL)
1207                 return;
1208
1209         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1210                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1211                               ETH_ALEN) != 0)
1212                         continue;
1213
1214                 if (i == s->num_p2p_clients - 1)
1215                         return; /* already the most recent entry */
1216
1217                 /* move the entry to mark it most recent */
1218                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1219                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1220                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1221                 os_memcpy(s->p2p_client_list +
1222                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1223                           ETH_ALEN);
1224                 os_memset(s->p2p_client_list +
1225                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1226                           0xff, ETH_ALEN);
1227                 found = 1;
1228                 break;
1229         }
1230
1231         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1232                 n = os_realloc_array(s->p2p_client_list,
1233                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1234                 if (n == NULL)
1235                         return;
1236                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1237                           ETH_ALEN);
1238                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1239                           0xff, ETH_ALEN);
1240                 s->p2p_client_list = n;
1241                 s->num_p2p_clients++;
1242         } else if (!found && s->p2p_client_list) {
1243                 /* Not enough room for an additional entry - drop the oldest
1244                  * entry */
1245                 os_memmove(s->p2p_client_list,
1246                            s->p2p_client_list + 2 * ETH_ALEN,
1247                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1248                 os_memcpy(s->p2p_client_list +
1249                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1250                           addr, ETH_ALEN);
1251                 os_memset(s->p2p_client_list +
1252                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1253                           0xff, ETH_ALEN);
1254         }
1255
1256         if (p2p_wpa_s->conf->update_config &&
1257             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1258                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1259 }
1260
1261
1262 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1263                                    int go, struct wpa_ssid *ssid, int freq,
1264                                    const u8 *psk, const char *passphrase,
1265                                    const u8 *go_dev_addr, int persistent,
1266                                    const char *extra)
1267 {
1268         const char *ssid_txt;
1269         char psk_txt[65];
1270
1271         if (psk)
1272                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1273         else
1274                 psk_txt[0] = '\0';
1275
1276         if (ssid)
1277                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1278         else
1279                 ssid_txt = "";
1280
1281         if (passphrase && passphrase[0] == '\0')
1282                 passphrase = NULL;
1283
1284         /*
1285          * Include PSK/passphrase only in the control interface message and
1286          * leave it out from the debug log entry.
1287          */
1288         wpa_msg_global_ctrl(wpa_s->p2pdev, MSG_INFO,
1289                             P2P_EVENT_GROUP_STARTED
1290                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1291                             MACSTR "%s%s",
1292                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1293                             psk ? " psk=" : "", psk_txt,
1294                             passphrase ? " passphrase=\"" : "",
1295                             passphrase ? passphrase : "",
1296                             passphrase ? "\"" : "",
1297                             MAC2STR(go_dev_addr),
1298                             persistent ? " [PERSISTENT]" : "", extra);
1299         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1300                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1301                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1302                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1303                    extra);
1304 }
1305
1306
1307 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1308                                            int success, int already_deleted)
1309 {
1310         struct wpa_ssid *ssid;
1311         int client;
1312         int persistent;
1313         u8 go_dev_addr[ETH_ALEN];
1314
1315         /*
1316          * This callback is likely called for the main interface. Update wpa_s
1317          * to use the group interface if a new interface was created for the
1318          * group.
1319          */
1320         if (wpa_s->global->p2p_group_formation)
1321                 wpa_s = wpa_s->global->p2p_group_formation;
1322         if (wpa_s->p2p_go_group_formation_completed) {
1323                 wpa_s->global->p2p_group_formation = NULL;
1324                 wpa_s->p2p_in_provisioning = 0;
1325         } else if (wpa_s->p2p_in_provisioning && !success) {
1326                 wpa_msg(wpa_s, MSG_DEBUG,
1327                         "P2P: Stop provisioning state due to failure");
1328                 wpa_s->p2p_in_provisioning = 0;
1329         }
1330         wpa_s->p2p_in_invitation = 0;
1331         wpa_s->group_formation_reported = 1;
1332
1333         if (!success) {
1334                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1335                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1336                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1337                 if (already_deleted)
1338                         return;
1339                 wpas_p2p_group_delete(wpa_s,
1340                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1341                 return;
1342         }
1343
1344         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1345                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1346
1347         ssid = wpa_s->current_ssid;
1348         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1349                 ssid->mode = WPAS_MODE_P2P_GO;
1350                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1351                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1352         }
1353
1354         persistent = 0;
1355         if (ssid) {
1356                 client = ssid->mode == WPAS_MODE_INFRA;
1357                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1358                         persistent = ssid->p2p_persistent_group;
1359                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1360                                   ETH_ALEN);
1361                 } else
1362                         persistent = wpas_p2p_persistent_group(wpa_s,
1363                                                                go_dev_addr,
1364                                                                ssid->ssid,
1365                                                                ssid->ssid_len);
1366         } else {
1367                 client = wpa_s->p2p_group_interface ==
1368                         P2P_GROUP_INTERFACE_CLIENT;
1369                 os_memset(go_dev_addr, 0, ETH_ALEN);
1370         }
1371
1372         wpa_s->show_group_started = 0;
1373         if (client) {
1374                 /*
1375                  * Indicate event only after successfully completed 4-way
1376                  * handshake, i.e., when the interface is ready for data
1377                  * packets.
1378                  */
1379                 wpa_s->show_group_started = 1;
1380         } else {
1381                 wpas_p2p_group_started(wpa_s, 1, ssid,
1382                                        ssid ? ssid->frequency : 0,
1383                                        ssid && ssid->passphrase == NULL &&
1384                                        ssid->psk_set ? ssid->psk : NULL,
1385                                        ssid ? ssid->passphrase : NULL,
1386                                        go_dev_addr, persistent, "");
1387                 wpas_p2p_cross_connect_setup(wpa_s);
1388                 wpas_p2p_set_group_idle_timeout(wpa_s);
1389         }
1390
1391         if (persistent)
1392                 wpas_p2p_store_persistent_group(wpa_s->p2pdev,
1393                                                 ssid, go_dev_addr);
1394         else {
1395                 os_free(wpa_s->global->add_psk);
1396                 wpa_s->global->add_psk = NULL;
1397         }
1398
1399         if (!client) {
1400                 wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 0, NULL);
1401                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1402         }
1403 }
1404
1405
1406 struct send_action_work {
1407         unsigned int freq;
1408         u8 dst[ETH_ALEN];
1409         u8 src[ETH_ALEN];
1410         u8 bssid[ETH_ALEN];
1411         size_t len;
1412         unsigned int wait_time;
1413         u8 buf[0];
1414 };
1415
1416
1417 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s)
1418 {
1419         struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx;
1420
1421         wpa_printf(MSG_DEBUG,
1422                    "P2P: Free Action frame radio work @%p (freq=%u dst="
1423                    MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)",
1424                    wpa_s->p2p_send_action_work, awork->freq,
1425                    MAC2STR(awork->dst), MAC2STR(awork->src),
1426                    MAC2STR(awork->bssid), awork->wait_time);
1427         wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame",
1428                     awork->buf, awork->len);
1429         os_free(awork);
1430         wpa_s->p2p_send_action_work->ctx = NULL;
1431         radio_work_done(wpa_s->p2p_send_action_work);
1432         wpa_s->p2p_send_action_work = NULL;
1433 }
1434
1435
1436 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1437                                               void *timeout_ctx)
1438 {
1439         struct wpa_supplicant *wpa_s = eloop_ctx;
1440
1441         if (!wpa_s->p2p_send_action_work)
1442                 return;
1443
1444         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1445         wpas_p2p_free_send_action_work(wpa_s);
1446 }
1447
1448
1449 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1450 {
1451         if (wpa_s->p2p_send_action_work) {
1452                 struct send_action_work *awork;
1453
1454                 awork = wpa_s->p2p_send_action_work->ctx;
1455                 wpa_printf(MSG_DEBUG,
1456                            "P2P: Clear Action TX work @%p (wait_time=%u)",
1457                            wpa_s->p2p_send_action_work, awork->wait_time);
1458                 if (awork->wait_time == 0) {
1459                         wpas_p2p_free_send_action_work(wpa_s);
1460                 } else {
1461                         /*
1462                          * In theory, this should not be needed, but number of
1463                          * places in the P2P code is still using non-zero wait
1464                          * time for the last Action frame in the sequence and
1465                          * some of these do not call send_action_done().
1466                          */
1467                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1468                                              wpa_s, NULL);
1469                         eloop_register_timeout(
1470                                 0, awork->wait_time * 1000,
1471                                 wpas_p2p_send_action_work_timeout,
1472                                 wpa_s, NULL);
1473                 }
1474         }
1475 }
1476
1477
1478 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1479                                            unsigned int freq,
1480                                            const u8 *dst, const u8 *src,
1481                                            const u8 *bssid,
1482                                            const u8 *data, size_t data_len,
1483                                            enum offchannel_send_action_result
1484                                            result)
1485 {
1486         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1487
1488         wpas_p2p_action_tx_clear(wpa_s);
1489
1490         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1491                 return;
1492
1493         switch (result) {
1494         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1495                 res = P2P_SEND_ACTION_SUCCESS;
1496                 break;
1497         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1498                 res = P2P_SEND_ACTION_NO_ACK;
1499                 break;
1500         case OFFCHANNEL_SEND_ACTION_FAILED:
1501                 res = P2P_SEND_ACTION_FAILED;
1502                 break;
1503         }
1504
1505         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1506
1507         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1508             wpa_s->pending_pd_before_join &&
1509             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1510              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1511             wpa_s->p2p_fallback_to_go_neg) {
1512                 wpa_s->pending_pd_before_join = 0;
1513                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1514                         "during p2p_connect-auto");
1515                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1516                                P2P_EVENT_FALLBACK_TO_GO_NEG
1517                                "reason=no-ACK-to-PD-Req");
1518                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1519                 return;
1520         }
1521 }
1522
1523
1524 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1525 {
1526         struct wpa_supplicant *wpa_s = work->wpa_s;
1527         struct send_action_work *awork = work->ctx;
1528
1529         if (deinit) {
1530                 if (work->started) {
1531                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1532                                              wpa_s, NULL);
1533                         wpa_s->p2p_send_action_work = NULL;
1534                         offchannel_send_action_done(wpa_s);
1535                 }
1536                 os_free(awork);
1537                 return;
1538         }
1539
1540         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1541                                    awork->bssid, awork->buf, awork->len,
1542                                    awork->wait_time,
1543                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1544                 os_free(awork);
1545                 radio_work_done(work);
1546                 return;
1547         }
1548         wpa_s->p2p_send_action_work = work;
1549 }
1550
1551
1552 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1553                                  unsigned int freq, const u8 *dst,
1554                                  const u8 *src, const u8 *bssid, const u8 *buf,
1555                                  size_t len, unsigned int wait_time)
1556 {
1557         struct send_action_work *awork;
1558
1559         if (radio_work_pending(wpa_s, "p2p-send-action")) {
1560                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1561                 return -1;
1562         }
1563
1564         awork = os_zalloc(sizeof(*awork) + len);
1565         if (awork == NULL)
1566                 return -1;
1567
1568         awork->freq = freq;
1569         os_memcpy(awork->dst, dst, ETH_ALEN);
1570         os_memcpy(awork->src, src, ETH_ALEN);
1571         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1572         awork->len = len;
1573         awork->wait_time = wait_time;
1574         os_memcpy(awork->buf, buf, len);
1575
1576         if (radio_add_work(wpa_s, freq, "p2p-send-action", 1,
1577                            wpas_send_action_cb, awork) < 0) {
1578                 os_free(awork);
1579                 return -1;
1580         }
1581
1582         return 0;
1583 }
1584
1585
1586 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1587                             const u8 *src, const u8 *bssid, const u8 *buf,
1588                             size_t len, unsigned int wait_time, int *scheduled)
1589 {
1590         struct wpa_supplicant *wpa_s = ctx;
1591         int listen_freq = -1, send_freq = -1;
1592
1593         if (scheduled)
1594                 *scheduled = 0;
1595         if (wpa_s->p2p_listen_work)
1596                 listen_freq = wpa_s->p2p_listen_work->freq;
1597         if (wpa_s->p2p_send_action_work)
1598                 send_freq = wpa_s->p2p_send_action_work->freq;
1599         if (listen_freq != (int) freq && send_freq != (int) freq) {
1600                 int res;
1601
1602                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d freq=%u)",
1603                            listen_freq, send_freq, freq);
1604                 res = wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1605                                             len, wait_time);
1606                 if (res == 0 && scheduled)
1607                         *scheduled = 1;
1608                 return res;
1609         }
1610
1611         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1612         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1613                                       wait_time,
1614                                       wpas_p2p_send_action_tx_status, 1);
1615 }
1616
1617
1618 static void wpas_send_action_done(void *ctx)
1619 {
1620         struct wpa_supplicant *wpa_s = ctx;
1621
1622         if (wpa_s->p2p_send_action_work) {
1623                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1624                                      wpa_s, NULL);
1625                 os_free(wpa_s->p2p_send_action_work->ctx);
1626                 radio_work_done(wpa_s->p2p_send_action_work);
1627                 wpa_s->p2p_send_action_work = NULL;
1628         }
1629
1630         offchannel_send_action_done(wpa_s);
1631 }
1632
1633
1634 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1635                                     struct p2p_go_neg_results *params)
1636 {
1637         if (wpa_s->go_params == NULL) {
1638                 wpa_s->go_params = os_malloc(sizeof(*params));
1639                 if (wpa_s->go_params == NULL)
1640                         return -1;
1641         }
1642         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1643         return 0;
1644 }
1645
1646
1647 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1648                                     struct p2p_go_neg_results *res)
1649 {
1650         wpa_s->group_formation_reported = 0;
1651         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1652                    " dev_addr " MACSTR " wps_method %d",
1653                    MAC2STR(res->peer_interface_addr),
1654                    MAC2STR(res->peer_device_addr), res->wps_method);
1655         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1656                           res->ssid, res->ssid_len);
1657         wpa_supplicant_ap_deinit(wpa_s);
1658         wpas_copy_go_neg_results(wpa_s, res);
1659         if (res->wps_method == WPS_PBC) {
1660                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1, 0);
1661 #ifdef CONFIG_WPS_NFC
1662         } else if (res->wps_method == WPS_NFC) {
1663                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1664                                    res->peer_interface_addr,
1665                                    wpa_s->p2pdev->p2p_oob_dev_pw,
1666                                    wpa_s->p2pdev->p2p_oob_dev_pw_id, 1,
1667                                    wpa_s->p2pdev->p2p_oob_dev_pw_id ==
1668                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1669                                    wpa_s->p2pdev->p2p_peer_oob_pubkey_hash :
1670                                    NULL,
1671                                    NULL, 0, 0);
1672 #endif /* CONFIG_WPS_NFC */
1673         } else {
1674                 u16 dev_pw_id = DEV_PW_DEFAULT;
1675                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1676                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1677                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1678                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1679                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1680                                    wpa_s->p2p_pin, 1, dev_pw_id);
1681         }
1682 }
1683
1684
1685 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1686                                   struct wpa_ssid *ssid)
1687 {
1688         struct wpa_ssid *persistent;
1689         struct psk_list_entry *psk;
1690         struct hostapd_data *hapd;
1691
1692         if (!wpa_s->ap_iface)
1693                 return;
1694
1695         persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
1696                                              ssid->ssid_len);
1697         if (persistent == NULL)
1698                 return;
1699
1700         hapd = wpa_s->ap_iface->bss[0];
1701
1702         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1703                          list) {
1704                 struct hostapd_wpa_psk *hpsk;
1705
1706                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1707                         MACSTR " psk=%d",
1708                         MAC2STR(psk->addr), psk->p2p);
1709                 hpsk = os_zalloc(sizeof(*hpsk));
1710                 if (hpsk == NULL)
1711                         break;
1712                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1713                 if (psk->p2p)
1714                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1715                 else
1716                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1717                 hpsk->next = hapd->conf->ssid.wpa_psk;
1718                 hapd->conf->ssid.wpa_psk = hpsk;
1719         }
1720 }
1721
1722
1723 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1724 {
1725         char buf[20 + P2P_MAX_CHANNELS * 6];
1726         char *pos, *end;
1727         unsigned int i;
1728         int res;
1729
1730         pos = buf;
1731         end = pos + sizeof(buf);
1732         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
1733                 res = os_snprintf(pos, end - pos, " %d",
1734                                   wpa_s->p2p_group_common_freqs[i]);
1735                 if (os_snprintf_error(end - pos, res))
1736                         break;
1737                 pos += res;
1738         }
1739         *pos = '\0';
1740
1741         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies:%s", buf);
1742 }
1743
1744
1745 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1746                                            struct p2p_go_neg_results *params)
1747 {
1748         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1749
1750         wpa_s->p2p_group_common_freqs_num = 0;
1751         os_free(wpa_s->p2p_group_common_freqs);
1752         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1753         if (!wpa_s->p2p_group_common_freqs)
1754                 return;
1755
1756         for (i = 0; i < len; i++) {
1757                 if (!wpa_s->go_params->freq_list[i])
1758                         break;
1759                 wpa_s->p2p_group_common_freqs[i] =
1760                         wpa_s->go_params->freq_list[i];
1761         }
1762         wpa_s->p2p_group_common_freqs_num = i;
1763 }
1764
1765
1766 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1767 {
1768 #ifndef CONFIG_NO_CONFIG_WRITE
1769         if (wpa_s->p2pdev->conf->update_config &&
1770             wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
1771                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1772 #endif /* CONFIG_NO_CONFIG_WRITE */
1773 }
1774
1775
1776 static void p2p_go_configured(void *ctx, void *data)
1777 {
1778         struct wpa_supplicant *wpa_s = ctx;
1779         struct p2p_go_neg_results *params = data;
1780         struct wpa_ssid *ssid;
1781
1782         wpa_s->ap_configured_cb = NULL;
1783         wpa_s->ap_configured_cb_ctx = NULL;
1784         wpa_s->ap_configured_cb_data = NULL;
1785         if (!wpa_s->go_params) {
1786                 wpa_printf(MSG_ERROR,
1787                            "P2P: p2p_go_configured() called with wpa_s->go_params == NULL");
1788                 return;
1789         }
1790
1791         p2p_go_save_group_common_freqs(wpa_s, params);
1792         p2p_go_dump_common_freqs(wpa_s);
1793
1794         ssid = wpa_s->current_ssid;
1795         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1796                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1797                 if (wpa_s->global->p2p_group_formation == wpa_s)
1798                         wpa_s->global->p2p_group_formation = NULL;
1799                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1800                                        params->passphrase[0] == '\0' ?
1801                                        params->psk : NULL,
1802                                        params->passphrase,
1803                                        wpa_s->global->p2p_dev_addr,
1804                                        params->persistent_group, "");
1805                 wpa_s->group_formation_reported = 1;
1806
1807                 if (wpa_s->p2pdev->p2ps_method_config_any) {
1808                         if (is_zero_ether_addr(wpa_s->p2pdev->p2ps_join_addr)) {
1809                                 wpa_dbg(wpa_s, MSG_DEBUG,
1810                                         "P2PS: Setting default PIN for ANY");
1811                                 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1812                                                           "12345670", NULL, 0,
1813                                                           0);
1814                         } else {
1815                                 wpa_dbg(wpa_s, MSG_DEBUG,
1816                                         "P2PS: Setting default PIN for " MACSTR,
1817                                         MAC2STR(wpa_s->p2pdev->p2ps_join_addr));
1818                                 wpa_supplicant_ap_wps_pin(
1819                                         wpa_s, wpa_s->p2pdev->p2ps_join_addr,
1820                                         "12345670", NULL, 0, 0);
1821                         }
1822                         wpa_s->p2pdev->p2ps_method_config_any = 0;
1823                 }
1824
1825                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1826                 if (params->persistent_group) {
1827                         wpas_p2p_store_persistent_group(
1828                                 wpa_s->p2pdev, ssid,
1829                                 wpa_s->global->p2p_dev_addr);
1830                         wpas_p2p_add_psk_list(wpa_s, ssid);
1831                 }
1832
1833                 wpas_notify_p2p_group_started(wpa_s, ssid,
1834                                               params->persistent_group, 0,
1835                                               NULL);
1836                 wpas_p2p_cross_connect_setup(wpa_s);
1837                 wpas_p2p_set_group_idle_timeout(wpa_s);
1838
1839                 if (wpa_s->p2p_first_connection_timeout) {
1840                         wpa_dbg(wpa_s, MSG_DEBUG,
1841                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1842                                 wpa_s->p2p_first_connection_timeout);
1843                         wpa_s->p2p_go_group_formation_completed = 0;
1844                         wpa_s->global->p2p_group_formation = wpa_s;
1845                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1846                                              wpa_s->p2pdev, NULL);
1847                         eloop_register_timeout(
1848                                 wpa_s->p2p_first_connection_timeout, 0,
1849                                 wpas_p2p_group_formation_timeout,
1850                                 wpa_s->p2pdev, NULL);
1851                 }
1852
1853                 return;
1854         }
1855
1856         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1857         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1858                                               params->peer_interface_addr)) {
1859                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1860                            "filtering");
1861                 return;
1862         }
1863         if (params->wps_method == WPS_PBC) {
1864                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1865                                           params->peer_device_addr);
1866 #ifdef CONFIG_WPS_NFC
1867         } else if (params->wps_method == WPS_NFC) {
1868                 if (wpa_s->p2pdev->p2p_oob_dev_pw_id !=
1869                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1870                     !wpa_s->p2pdev->p2p_oob_dev_pw) {
1871                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1872                         return;
1873                 }
1874                 wpas_ap_wps_add_nfc_pw(
1875                         wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id,
1876                         wpa_s->p2pdev->p2p_oob_dev_pw,
1877                         wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ?
1878                         wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL);
1879 #endif /* CONFIG_WPS_NFC */
1880         } else if (wpa_s->p2p_pin[0])
1881                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1882                                           wpa_s->p2p_pin, NULL, 0, 0);
1883         os_free(wpa_s->go_params);
1884         wpa_s->go_params = NULL;
1885 }
1886
1887
1888 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1889                               struct p2p_go_neg_results *params,
1890                               int group_formation)
1891 {
1892         struct wpa_ssid *ssid;
1893
1894         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1895         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1896                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1897                         "results");
1898                 return;
1899         }
1900
1901         ssid = wpa_config_add_network(wpa_s->conf);
1902         if (ssid == NULL) {
1903                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1904                 return;
1905         }
1906
1907         wpa_s->show_group_started = 0;
1908         wpa_s->p2p_go_group_formation_completed = 0;
1909         wpa_s->group_formation_reported = 0;
1910         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1911
1912         wpa_config_set_network_defaults(ssid);
1913         ssid->temporary = 1;
1914         ssid->p2p_group = 1;
1915         ssid->p2p_persistent_group = !!params->persistent_group;
1916         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1917                 WPAS_MODE_P2P_GO;
1918         ssid->frequency = params->freq;
1919         ssid->ht40 = params->ht40;
1920         ssid->vht = params->vht;
1921         ssid->max_oper_chwidth = params->max_oper_chwidth;
1922         ssid->vht_center_freq2 = params->vht_center_freq2;
1923         ssid->he = params->he;
1924         ssid->ssid = os_zalloc(params->ssid_len + 1);
1925         if (ssid->ssid) {
1926                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1927                 ssid->ssid_len = params->ssid_len;
1928         }
1929         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1930         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1931         ssid->proto = WPA_PROTO_RSN;
1932         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1933         ssid->group_cipher = WPA_CIPHER_CCMP;
1934         if (params->freq > 56160) {
1935                 /*
1936                  * Enable GCMP instead of CCMP as pairwise_cipher and
1937                  * group_cipher in 60 GHz.
1938                  */
1939                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1940                 ssid->group_cipher = WPA_CIPHER_GCMP;
1941                 /* P2P GO in 60 GHz is always a PCP (PBSS) */
1942                 ssid->pbss = 1;
1943         }
1944         if (os_strlen(params->passphrase) > 0) {
1945                 ssid->passphrase = os_strdup(params->passphrase);
1946                 if (ssid->passphrase == NULL) {
1947                         wpa_msg_global(wpa_s, MSG_ERROR,
1948                                        "P2P: Failed to copy passphrase for GO");
1949                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1950                         return;
1951                 }
1952         } else
1953                 ssid->passphrase = NULL;
1954         ssid->psk_set = params->psk_set;
1955         if (ssid->psk_set)
1956                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1957         else if (ssid->passphrase)
1958                 wpa_config_update_psk(ssid);
1959         ssid->ap_max_inactivity = wpa_s->p2pdev->conf->p2p_go_max_inactivity;
1960
1961         wpa_s->ap_configured_cb = p2p_go_configured;
1962         wpa_s->ap_configured_cb_ctx = wpa_s;
1963         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1964         wpa_s->scan_req = NORMAL_SCAN_REQ;
1965         wpa_s->connect_without_scan = ssid;
1966         wpa_s->reassociate = 1;
1967         wpa_s->disconnected = 0;
1968         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1969                 "start GO)");
1970         wpa_supplicant_req_scan(wpa_s, 0, 0);
1971 }
1972
1973
1974 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1975                                   const struct wpa_supplicant *src)
1976 {
1977         struct wpa_config *d;
1978         const struct wpa_config *s;
1979
1980         d = dst->conf;
1981         s = src->conf;
1982
1983 #define C(n)                            \
1984 do {                                    \
1985         if (s->n && !d->n)              \
1986                 d->n = os_strdup(s->n); \
1987 } while (0)
1988
1989         C(device_name);
1990         C(manufacturer);
1991         C(model_name);
1992         C(model_number);
1993         C(serial_number);
1994         C(config_methods);
1995 #undef C
1996
1997         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1998         os_memcpy(d->sec_device_type, s->sec_device_type,
1999                   sizeof(d->sec_device_type));
2000         d->num_sec_device_types = s->num_sec_device_types;
2001
2002         d->p2p_group_idle = s->p2p_group_idle;
2003         d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
2004         d->p2p_intra_bss = s->p2p_intra_bss;
2005         d->persistent_reconnect = s->persistent_reconnect;
2006         d->max_num_sta = s->max_num_sta;
2007         d->pbc_in_m1 = s->pbc_in_m1;
2008         d->ignore_old_scan_res = s->ignore_old_scan_res;
2009         d->beacon_int = s->beacon_int;
2010         d->dtim_period = s->dtim_period;
2011         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
2012         d->disassoc_low_ack = s->disassoc_low_ack;
2013         d->disable_scan_offload = s->disable_scan_offload;
2014         d->passive_scan = s->passive_scan;
2015
2016         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey &&
2017             !d->wps_nfc_pw_from_config) {
2018                 wpabuf_free(d->wps_nfc_dh_privkey);
2019                 wpabuf_free(d->wps_nfc_dh_pubkey);
2020                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
2021                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
2022         }
2023         d->p2p_cli_probe = s->p2p_cli_probe;
2024         d->go_interworking = s->go_interworking;
2025         d->go_access_network_type = s->go_access_network_type;
2026         d->go_internet = s->go_internet;
2027         d->go_venue_group = s->go_venue_group;
2028         d->go_venue_type = s->go_venue_type;
2029 }
2030
2031
2032 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
2033                                       char *ifname, size_t len)
2034 {
2035         char *ifname_ptr = wpa_s->ifname;
2036
2037         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
2038                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
2039                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
2040         }
2041
2042         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
2043         if (os_strlen(ifname) >= IFNAMSIZ &&
2044             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
2045                 int res;
2046
2047                 /* Try to avoid going over the IFNAMSIZ length limit */
2048                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
2049                 if (os_snprintf_error(len, res) && len)
2050                         ifname[len - 1] = '\0';
2051         }
2052 }
2053
2054
2055 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
2056                                         enum wpa_driver_if_type type)
2057 {
2058         char ifname[120], force_ifname[120];
2059
2060         if (wpa_s->pending_interface_name[0]) {
2061                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
2062                            "- skip creation of a new one");
2063                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
2064                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
2065                                    "unknown?! ifname='%s'",
2066                                    wpa_s->pending_interface_name);
2067                         return -1;
2068                 }
2069                 return 0;
2070         }
2071
2072         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
2073         force_ifname[0] = '\0';
2074
2075         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
2076                    ifname);
2077         wpa_s->p2p_group_idx++;
2078
2079         wpa_s->pending_interface_type = type;
2080         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
2081                            wpa_s->pending_interface_addr, NULL) < 0) {
2082                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
2083                            "interface");
2084                 return -1;
2085         }
2086
2087         if (wpa_s->conf->p2p_interface_random_mac_addr) {
2088                 random_mac_addr(wpa_s->pending_interface_addr);
2089                 wpa_printf(MSG_DEBUG, "P2P: Generate random MAC address " MACSTR
2090                            " for the group",
2091                            MAC2STR(wpa_s->pending_interface_addr));
2092         }
2093
2094         if (force_ifname[0]) {
2095                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2096                            force_ifname);
2097                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2098                            sizeof(wpa_s->pending_interface_name));
2099         } else
2100                 os_strlcpy(wpa_s->pending_interface_name, ifname,
2101                            sizeof(wpa_s->pending_interface_name));
2102         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2103                    MACSTR, wpa_s->pending_interface_name,
2104                    MAC2STR(wpa_s->pending_interface_addr));
2105
2106         return 0;
2107 }
2108
2109
2110 static void wpas_p2p_remove_pending_group_interface(
2111         struct wpa_supplicant *wpa_s)
2112 {
2113         if (!wpa_s->pending_interface_name[0] ||
2114             is_zero_ether_addr(wpa_s->pending_interface_addr))
2115                 return; /* No pending virtual interface */
2116
2117         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2118                    wpa_s->pending_interface_name);
2119         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2120                           wpa_s->pending_interface_name);
2121         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2122         wpa_s->pending_interface_name[0] = '\0';
2123         wpa_s->global->pending_group_iface_for_p2ps = 0;
2124 }
2125
2126
2127 static struct wpa_supplicant *
2128 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2129 {
2130         struct wpa_interface iface;
2131         struct wpa_supplicant *group_wpa_s;
2132
2133         if (!wpa_s->pending_interface_name[0]) {
2134                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2135                 if (!wpas_p2p_create_iface(wpa_s))
2136                         return NULL;
2137                 /*
2138                  * Something has forced us to remove the pending interface; try
2139                  * to create a new one and hope for the best that we will get
2140                  * the same local address.
2141                  */
2142                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2143                                                  WPA_IF_P2P_CLIENT) < 0)
2144                         return NULL;
2145         }
2146
2147         os_memset(&iface, 0, sizeof(iface));
2148         iface.ifname = wpa_s->pending_interface_name;
2149         iface.driver = wpa_s->driver->name;
2150         if (wpa_s->conf->ctrl_interface == NULL &&
2151             wpa_s->parent != wpa_s &&
2152             wpa_s->p2p_mgmt &&
2153             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2154                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2155         else
2156                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2157         iface.driver_param = wpa_s->conf->driver_param;
2158         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2159         if (group_wpa_s == NULL) {
2160                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2161                            "wpa_supplicant interface");
2162                 return NULL;
2163         }
2164         wpa_s->pending_interface_name[0] = '\0';
2165         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2166                 P2P_GROUP_INTERFACE_CLIENT;
2167         wpa_s->global->p2p_group_formation = group_wpa_s;
2168         wpa_s->global->pending_group_iface_for_p2ps = 0;
2169
2170         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2171
2172         if (wpa_s->conf->p2p_interface_random_mac_addr) {
2173                 if (wpa_drv_set_mac_addr(group_wpa_s,
2174                                          wpa_s->pending_interface_addr) < 0) {
2175                         wpa_msg(group_wpa_s, MSG_INFO,
2176                                 "Failed to set random MAC address");
2177                         wpa_supplicant_remove_iface(wpa_s->global, group_wpa_s,
2178                                                     0);
2179                         return NULL;
2180                 }
2181
2182                 if (wpa_supplicant_update_mac_addr(group_wpa_s) < 0) {
2183                         wpa_msg(group_wpa_s, MSG_INFO,
2184                                 "Could not update MAC address information");
2185                         wpa_supplicant_remove_iface(wpa_s->global, group_wpa_s,
2186                                                     0);
2187                         return NULL;
2188                 }
2189
2190                 wpa_printf(MSG_DEBUG, "P2P: Using random MAC address " MACSTR
2191                            " for the group",
2192                            MAC2STR(wpa_s->pending_interface_addr));
2193         }
2194
2195         return group_wpa_s;
2196 }
2197
2198
2199 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2200                                              void *timeout_ctx)
2201 {
2202         struct wpa_supplicant *wpa_s = eloop_ctx;
2203         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2204         wpas_p2p_group_formation_failed(wpa_s, 0);
2205 }
2206
2207
2208 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2209                                             int already_deleted)
2210 {
2211         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2212                              wpa_s->p2pdev, NULL);
2213         if (wpa_s->global->p2p)
2214                 p2p_group_formation_failed(wpa_s->global->p2p);
2215         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2216 }
2217
2218
2219 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2220 {
2221         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2222         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2223                              wpa_s->p2pdev, NULL);
2224         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2225                                wpa_s->p2pdev, NULL);
2226         wpa_s->global->p2p_fail_on_wps_complete = 0;
2227 }
2228
2229
2230 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2231 {
2232         if (wpa_s->global->p2p_group_formation != wpa_s)
2233                 return;
2234         /* Speed up group formation timeout since this cannot succeed */
2235         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2236                              wpa_s->p2pdev, NULL);
2237         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2238                                wpa_s->p2pdev, NULL);
2239 }
2240
2241
2242 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2243 {
2244         struct wpa_supplicant *wpa_s = ctx;
2245         struct wpa_supplicant *group_wpa_s;
2246
2247         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2248                 wpa_drv_cancel_remain_on_channel(wpa_s);
2249                 wpa_s->off_channel_freq = 0;
2250                 wpa_s->roc_waiting_drv_freq = 0;
2251         }
2252
2253         if (res->status) {
2254                 wpa_msg_global(wpa_s, MSG_INFO,
2255                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2256                                res->status);
2257                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2258                 wpas_p2p_remove_pending_group_interface(wpa_s);
2259                 return;
2260         }
2261
2262         if (!res->role_go) {
2263                 /* Inform driver of the operating channel of GO. */
2264                 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2265         }
2266
2267         if (wpa_s->p2p_go_ht40)
2268                 res->ht40 = 1;
2269         if (wpa_s->p2p_go_vht)
2270                 res->vht = 1;
2271         if (wpa_s->p2p_go_he)
2272                 res->he = 1;
2273         res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth;
2274         res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2;
2275
2276         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2277                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2278                        " wps_method=%s",
2279                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2280                        MAC2STR(res->peer_device_addr),
2281                        MAC2STR(res->peer_interface_addr),
2282                        p2p_wps_method_text(res->wps_method));
2283         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2284
2285         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2286                 struct wpa_ssid *ssid;
2287                 ssid = wpa_config_get_network(wpa_s->conf,
2288                                               wpa_s->p2p_persistent_id);
2289                 if (ssid && ssid->disabled == 2 &&
2290                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2291                         size_t len = os_strlen(ssid->passphrase);
2292                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2293                                    "on requested persistent group");
2294                         os_memcpy(res->passphrase, ssid->passphrase, len);
2295                         res->passphrase[len] = '\0';
2296                 }
2297         }
2298
2299         if (wpa_s->create_p2p_iface) {
2300                 group_wpa_s =
2301                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2302                 if (group_wpa_s == NULL) {
2303                         wpas_p2p_remove_pending_group_interface(wpa_s);
2304                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2305                                              wpa_s, NULL);
2306                         wpas_p2p_group_formation_failed(wpa_s, 1);
2307                         return;
2308                 }
2309                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2310                 wpa_s->pending_interface_name[0] = '\0';
2311         } else {
2312                 group_wpa_s = wpa_s->parent;
2313                 wpa_s->global->p2p_group_formation = group_wpa_s;
2314                 if (group_wpa_s != wpa_s)
2315                         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2316         }
2317
2318         group_wpa_s->p2p_in_provisioning = 1;
2319         group_wpa_s->p2pdev = wpa_s;
2320         if (group_wpa_s != wpa_s) {
2321                 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2322                           sizeof(group_wpa_s->p2p_pin));
2323                 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2324         }
2325         if (res->role_go) {
2326                 wpas_start_wps_go(group_wpa_s, res, 1);
2327         } else {
2328                 os_get_reltime(&group_wpa_s->scan_min_time);
2329                 wpas_start_wps_enrollee(group_wpa_s, res);
2330         }
2331
2332         wpa_s->p2p_long_listen = 0;
2333         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2334
2335         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2336         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2337                                (res->peer_config_timeout % 100) * 10000,
2338                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2339 }
2340
2341
2342 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2343                                u8 go_intent)
2344 {
2345         struct wpa_supplicant *wpa_s = ctx;
2346         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2347                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2348                        dev_passwd_id, go_intent);
2349
2350         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2351 }
2352
2353
2354 static void wpas_dev_found(void *ctx, const u8 *addr,
2355                            const struct p2p_peer_info *info,
2356                            int new_device)
2357 {
2358 #ifndef CONFIG_NO_STDOUT_DEBUG
2359         struct wpa_supplicant *wpa_s = ctx;
2360         char devtype[WPS_DEV_TYPE_BUFSIZE];
2361         char *wfd_dev_info_hex = NULL;
2362
2363 #ifdef CONFIG_WIFI_DISPLAY
2364         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2365                                                     WFD_SUBELEM_DEVICE_INFO);
2366 #endif /* CONFIG_WIFI_DISPLAY */
2367
2368         if (info->p2ps_instance) {
2369                 char str[256];
2370                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2371                 size_t len = wpabuf_len(info->p2ps_instance);
2372
2373                 while (len) {
2374                         u32 id;
2375                         u16 methods;
2376                         u8 str_len;
2377
2378                         if (len < 4 + 2 + 1)
2379                                 break;
2380                         id = WPA_GET_LE32(buf);
2381                         buf += sizeof(u32);
2382                         methods = WPA_GET_BE16(buf);
2383                         buf += sizeof(u16);
2384                         str_len = *buf++;
2385                         if (str_len > len - 4 - 2 - 1)
2386                                 break;
2387                         os_memcpy(str, buf, str_len);
2388                         str[str_len] = '\0';
2389                         buf += str_len;
2390                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2391
2392                         wpa_msg_global(wpa_s, MSG_INFO,
2393                                        P2P_EVENT_DEVICE_FOUND MACSTR
2394                                        " p2p_dev_addr=" MACSTR
2395                                        " pri_dev_type=%s name='%s'"
2396                                        " config_methods=0x%x"
2397                                        " dev_capab=0x%x"
2398                                        " group_capab=0x%x"
2399                                        " adv_id=%x asp_svc=%s%s",
2400                                        MAC2STR(addr),
2401                                        MAC2STR(info->p2p_device_addr),
2402                                        wps_dev_type_bin2str(
2403                                                info->pri_dev_type,
2404                                                devtype, sizeof(devtype)),
2405                                        info->device_name, methods,
2406                                        info->dev_capab, info->group_capab,
2407                                        id, str,
2408                                        info->vendor_elems ?
2409                                        " vendor_elems=1" : "");
2410                 }
2411                 goto done;
2412         }
2413
2414         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2415                        " p2p_dev_addr=" MACSTR
2416                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2417                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2418                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2419                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2420                                             sizeof(devtype)),
2421                        info->device_name, info->config_methods,
2422                        info->dev_capab, info->group_capab,
2423                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2424                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2425                        info->vendor_elems ? " vendor_elems=1" : "",
2426                        new_device);
2427
2428 done:
2429         os_free(wfd_dev_info_hex);
2430 #endif /* CONFIG_NO_STDOUT_DEBUG */
2431
2432         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2433 }
2434
2435
2436 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2437 {
2438         struct wpa_supplicant *wpa_s = ctx;
2439
2440         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2441                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2442
2443         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2444 }
2445
2446
2447 static void wpas_find_stopped(void *ctx)
2448 {
2449         struct wpa_supplicant *wpa_s = ctx;
2450
2451         if (wpa_s->p2p_scan_work && wpas_abort_ongoing_scan(wpa_s) < 0)
2452                 wpa_printf(MSG_DEBUG, "P2P: Abort ongoing scan failed");
2453
2454         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2455         wpas_notify_p2p_find_stopped(wpa_s);
2456 }
2457
2458
2459 struct wpas_p2p_listen_work {
2460         unsigned int freq;
2461         unsigned int duration;
2462         struct wpabuf *probe_resp_ie;
2463 };
2464
2465
2466 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2467 {
2468         if (lwork == NULL)
2469                 return;
2470         wpabuf_free(lwork->probe_resp_ie);
2471         os_free(lwork);
2472 }
2473
2474
2475 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2476 {
2477         struct wpas_p2p_listen_work *lwork;
2478
2479         if (!wpa_s->p2p_listen_work)
2480                 return;
2481
2482         lwork = wpa_s->p2p_listen_work->ctx;
2483         wpas_p2p_listen_work_free(lwork);
2484         radio_work_done(wpa_s->p2p_listen_work);
2485         wpa_s->p2p_listen_work = NULL;
2486 }
2487
2488
2489 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2490 {
2491         struct wpa_supplicant *wpa_s = work->wpa_s;
2492         struct wpas_p2p_listen_work *lwork = work->ctx;
2493         unsigned int duration;
2494
2495         if (deinit) {
2496                 if (work->started) {
2497                         wpa_s->p2p_listen_work = NULL;
2498                         wpas_stop_listen(wpa_s);
2499                 }
2500                 wpas_p2p_listen_work_free(lwork);
2501                 return;
2502         }
2503
2504         wpa_s->p2p_listen_work = work;
2505
2506         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2507
2508         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2509                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2510                            "report received Probe Request frames");
2511                 wpas_p2p_listen_work_done(wpa_s);
2512                 return;
2513         }
2514
2515         wpa_s->pending_listen_freq = lwork->freq;
2516         wpa_s->pending_listen_duration = lwork->duration;
2517
2518         duration = lwork->duration;
2519 #ifdef CONFIG_TESTING_OPTIONS
2520         if (wpa_s->extra_roc_dur) {
2521                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2522                            duration, duration + wpa_s->extra_roc_dur);
2523                 duration += wpa_s->extra_roc_dur;
2524         }
2525 #endif /* CONFIG_TESTING_OPTIONS */
2526
2527         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2528                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2529                            "to remain on channel (%u MHz) for Listen "
2530                            "state", lwork->freq);
2531                 wpas_p2p_listen_work_done(wpa_s);
2532                 wpa_s->pending_listen_freq = 0;
2533                 return;
2534         }
2535         wpa_s->off_channel_freq = 0;
2536         wpa_s->roc_waiting_drv_freq = lwork->freq;
2537 }
2538
2539
2540 static int wpas_start_listen(void *ctx, unsigned int freq,
2541                              unsigned int duration,
2542                              const struct wpabuf *probe_resp_ie)
2543 {
2544         struct wpa_supplicant *wpa_s = ctx;
2545         struct wpas_p2p_listen_work *lwork;
2546
2547         if (wpa_s->p2p_listen_work) {
2548                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2549                 return -1;
2550         }
2551
2552         lwork = os_zalloc(sizeof(*lwork));
2553         if (lwork == NULL)
2554                 return -1;
2555         lwork->freq = freq;
2556         lwork->duration = duration;
2557         if (probe_resp_ie) {
2558                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2559                 if (lwork->probe_resp_ie == NULL) {
2560                         wpas_p2p_listen_work_free(lwork);
2561                         return -1;
2562                 }
2563         }
2564
2565         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2566                            lwork) < 0) {
2567                 wpas_p2p_listen_work_free(lwork);
2568                 return -1;
2569         }
2570
2571         return 0;
2572 }
2573
2574
2575 static void wpas_stop_listen(void *ctx)
2576 {
2577         struct wpa_supplicant *wpa_s = ctx;
2578         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2579                 wpa_drv_cancel_remain_on_channel(wpa_s);
2580                 wpa_s->off_channel_freq = 0;
2581                 wpa_s->roc_waiting_drv_freq = 0;
2582         }
2583         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2584
2585         /*
2586          * Don't cancel Probe Request RX reporting for a connected P2P Client
2587          * handling Probe Request frames.
2588          */
2589         if (!wpa_s->p2p_cli_probe)
2590                 wpa_drv_probe_req_report(wpa_s, 0);
2591
2592         wpas_p2p_listen_work_done(wpa_s);
2593 }
2594
2595
2596 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2597                                 unsigned int freq)
2598 {
2599         struct wpa_supplicant *wpa_s = ctx;
2600         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2601                                  freq);
2602 }
2603
2604
2605 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2606                                          const u8 *peer, const char *params,
2607                                          unsigned int generated_pin)
2608 {
2609         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2610                        " %08d%s", MAC2STR(peer), generated_pin, params);
2611 }
2612
2613
2614 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2615                                         const u8 *peer, const char *params)
2616 {
2617         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2618                        "%s", MAC2STR(peer), params);
2619 }
2620
2621
2622 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2623                                const u8 *dev_addr, const u8 *pri_dev_type,
2624                                const char *dev_name, u16 supp_config_methods,
2625                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2626                                size_t group_id_len)
2627 {
2628         struct wpa_supplicant *wpa_s = ctx;
2629         char devtype[WPS_DEV_TYPE_BUFSIZE];
2630         char params[300];
2631         u8 empty_dev_type[8];
2632         unsigned int generated_pin = 0;
2633         struct wpa_supplicant *group = NULL;
2634         int res;
2635
2636         if (group_id) {
2637                 for (group = wpa_s->global->ifaces; group; group = group->next)
2638                 {
2639                         struct wpa_ssid *s = group->current_ssid;
2640                         if (s != NULL &&
2641                             s->mode == WPAS_MODE_P2P_GO &&
2642                             group_id_len - ETH_ALEN == s->ssid_len &&
2643                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2644                                       s->ssid_len) == 0)
2645                                 break;
2646                 }
2647         }
2648
2649         if (pri_dev_type == NULL) {
2650                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2651                 pri_dev_type = empty_dev_type;
2652         }
2653         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2654                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2655                           "dev_capab=0x%x group_capab=0x%x%s%s",
2656                           MAC2STR(dev_addr),
2657                           wps_dev_type_bin2str(pri_dev_type, devtype,
2658                                                sizeof(devtype)),
2659                           dev_name, supp_config_methods, dev_capab, group_capab,
2660                           group ? " group=" : "",
2661                           group ? group->ifname : "");
2662         if (os_snprintf_error(sizeof(params), res))
2663                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2664         params[sizeof(params) - 1] = '\0';
2665
2666         if (config_methods & WPS_CONFIG_DISPLAY) {
2667                 if (wps_generate_pin(&generated_pin) < 0) {
2668                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2669                         wpas_notify_p2p_provision_discovery(
2670                                 wpa_s, peer, 0 /* response */,
2671                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2672                         return;
2673                 }
2674                 wpas_prov_disc_local_display(wpa_s, peer, params,
2675                                              generated_pin);
2676         } else if (config_methods & WPS_CONFIG_KEYPAD)
2677                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2678         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2679                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2680                                MACSTR "%s", MAC2STR(peer), params);
2681
2682         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2683                                             P2P_PROV_DISC_SUCCESS,
2684                                             config_methods, generated_pin);
2685 }
2686
2687
2688 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2689 {
2690         struct wpa_supplicant *wpa_s = ctx;
2691         unsigned int generated_pin = 0;
2692         char params[20];
2693
2694         if (wpa_s->pending_pd_before_join &&
2695             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2696              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2697                 wpa_s->pending_pd_before_join = 0;
2698                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2699                            "join-existing-group operation");
2700                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2701                 return;
2702         }
2703
2704         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2705             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2706                 int res;
2707
2708                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2709                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2710                 if (os_snprintf_error(sizeof(params), res))
2711                         params[sizeof(params) - 1] = '\0';
2712         } else
2713                 params[0] = '\0';
2714
2715         if (config_methods & WPS_CONFIG_DISPLAY)
2716                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2717         else if (config_methods & WPS_CONFIG_KEYPAD) {
2718                 if (wps_generate_pin(&generated_pin) < 0) {
2719                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2720                         wpas_notify_p2p_provision_discovery(
2721                                 wpa_s, peer, 0 /* response */,
2722                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2723                         return;
2724                 }
2725                 wpas_prov_disc_local_display(wpa_s, peer, params,
2726                                              generated_pin);
2727         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2728                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2729                                MACSTR "%s", MAC2STR(peer), params);
2730
2731         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2732                                             P2P_PROV_DISC_SUCCESS,
2733                                             config_methods, generated_pin);
2734 }
2735
2736
2737 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2738                                 enum p2p_prov_disc_status status,
2739                                 u32 adv_id, const u8 *adv_mac,
2740                                 const char *deferred_session_resp)
2741 {
2742         struct wpa_supplicant *wpa_s = ctx;
2743
2744         if (wpa_s->p2p_fallback_to_go_neg) {
2745                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2746                         "failed - fall back to GO Negotiation");
2747                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
2748                                P2P_EVENT_FALLBACK_TO_GO_NEG
2749                                "reason=PD-failed");
2750                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2751                 return;
2752         }
2753
2754         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2755                 wpa_s->pending_pd_before_join = 0;
2756                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2757                            "join-existing-group operation (no ACK for PD "
2758                            "Req attempts)");
2759                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2760                 return;
2761         }
2762
2763         if (adv_id && adv_mac && deferred_session_resp) {
2764                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2765                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2766                                " deferred_session_resp='%s'",
2767                                MAC2STR(peer), status, adv_id,
2768                                deferred_session_resp);
2769         } else if (adv_id && adv_mac) {
2770                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2771                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2772                                MAC2STR(peer), status, adv_id);
2773         } else {
2774                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2775                                " p2p_dev_addr=" MACSTR " status=%d",
2776                                MAC2STR(peer), status);
2777         }
2778
2779         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2780                                             status, 0, 0);
2781 }
2782
2783
2784 static int freq_included(struct wpa_supplicant *wpa_s,
2785                          const struct p2p_channels *channels,
2786                          unsigned int freq)
2787 {
2788         if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2789             wpas_p2p_go_is_peer_freq(wpa_s, freq))
2790                 return 1;
2791         return 0;
2792 }
2793
2794
2795 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2796 {
2797         unsigned int num = P2P_MAX_CHANNELS;
2798         int *common_freqs;
2799         int ret;
2800
2801         p2p_go_dump_common_freqs(wpa_s);
2802         common_freqs = os_calloc(num, sizeof(int));
2803         if (!common_freqs)
2804                 return;
2805
2806         ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2807         if (ret < 0) {
2808                 wpa_dbg(wpa_s, MSG_DEBUG,
2809                         "P2P: Failed to get group common freqs");
2810                 os_free(common_freqs);
2811                 return;
2812         }
2813
2814         os_free(wpa_s->p2p_group_common_freqs);
2815         wpa_s->p2p_group_common_freqs = common_freqs;
2816         wpa_s->p2p_group_common_freqs_num = num;
2817         p2p_go_dump_common_freqs(wpa_s);
2818 }
2819
2820
2821 /*
2822  * Check if the given frequency is one of the possible operating frequencies
2823  * set after the completion of the GO Negotiation.
2824  */
2825 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2826 {
2827         unsigned int i;
2828
2829         p2p_go_dump_common_freqs(wpa_s);
2830
2831         /* assume no restrictions */
2832         if (!wpa_s->p2p_group_common_freqs_num)
2833                 return 1;
2834
2835         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2836                 if (wpa_s->p2p_group_common_freqs[i] == freq)
2837                         return 1;
2838         }
2839         return 0;
2840 }
2841
2842
2843 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2844                                struct sta_info *sta, void *ctx)
2845 {
2846         int *ecsa_support = ctx;
2847
2848         *ecsa_support &= sta->ecsa_supported;
2849
2850         return 0;
2851 }
2852
2853
2854 /* Check if all the peers support eCSA */
2855 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2856 {
2857         int ecsa_support = 1;
2858
2859         ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2860                         &ecsa_support);
2861
2862         return ecsa_support;
2863 }
2864
2865
2866 /**
2867  * Pick the best frequency to use from all the currently used frequencies.
2868  */
2869 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2870                                         struct wpa_used_freq_data *freqs,
2871                                         unsigned int num)
2872 {
2873         unsigned int i, c;
2874
2875         /* find a candidate freq that is supported by P2P */
2876         for (c = 0; c < num; c++)
2877                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2878                         break;
2879
2880         if (c == num)
2881                 return 0;
2882
2883         /* once we have a candidate, try to find a 'better' one */
2884         for (i = c + 1; i < num; i++) {
2885                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2886                         continue;
2887
2888                 /*
2889                  * 1. Infrastructure station interfaces have higher preference.
2890                  * 2. P2P Clients have higher preference.
2891                  * 3. All others.
2892                  */
2893                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2894                         c = i;
2895                         break;
2896                 }
2897
2898                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2899                         c = i;
2900         }
2901         return freqs[c].freq;
2902 }
2903
2904
2905 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2906                                   const u8 *go_dev_addr, const u8 *ssid,
2907                                   size_t ssid_len, int *go, u8 *group_bssid,
2908                                   int *force_freq, int persistent_group,
2909                                   const struct p2p_channels *channels,
2910                                   int dev_pw_id)
2911 {
2912         struct wpa_supplicant *wpa_s = ctx;
2913         struct wpa_ssid *s;
2914         struct wpa_used_freq_data *freqs;
2915         struct wpa_supplicant *grp;
2916         int best_freq;
2917
2918         if (!persistent_group) {
2919                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2920                            " to join an active group (SSID: %s)",
2921                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2922                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2923                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2924                      == 0 ||
2925                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2926                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2927                                    "authorized invitation");
2928                         goto accept_inv;
2929                 }
2930
2931 #ifdef CONFIG_WPS_NFC
2932                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2933                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2934                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2935                         wpa_s->p2p_wps_method = WPS_NFC;
2936                         wpa_s->pending_join_wps_method = WPS_NFC;
2937                         os_memcpy(wpa_s->pending_join_dev_addr,
2938                                   go_dev_addr, ETH_ALEN);
2939                         os_memcpy(wpa_s->pending_join_iface_addr,
2940                                   bssid, ETH_ALEN);
2941                         goto accept_inv;
2942                 }
2943 #endif /* CONFIG_WPS_NFC */
2944
2945                 /*
2946                  * Do not accept the invitation automatically; notify user and
2947                  * request approval.
2948                  */
2949                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2950         }
2951
2952         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2953         if (grp) {
2954                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2955                            "running persistent group");
2956                 if (*go)
2957                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2958                 goto accept_inv;
2959         }
2960
2961         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2962             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2963                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2964                            "invitation to re-invoke a persistent group");
2965                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2966         } else if (!wpa_s->conf->persistent_reconnect)
2967                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2968
2969         for (s = wpa_s->conf->ssid; s; s = s->next) {
2970                 if (s->disabled == 2 &&
2971                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2972                     s->ssid_len == ssid_len &&
2973                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2974                         break;
2975         }
2976
2977         if (!s) {
2978                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2979                            " requested reinvocation of an unknown group",
2980                            MAC2STR(sa));
2981                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2982         }
2983
2984         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2985                 *go = 1;
2986                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2987                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2988                                    "interface is already in use - reject "
2989                                    "invitation");
2990                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2991                 }
2992                 if (wpa_s->p2p_mgmt)
2993                         os_memcpy(group_bssid, wpa_s->parent->own_addr,
2994                                   ETH_ALEN);
2995                 else
2996                         os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2997         } else if (s->mode == WPAS_MODE_P2P_GO) {
2998                 *go = 1;
2999                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
3000                 {
3001                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3002                                    "interface address for the group");
3003                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
3004                 }
3005                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
3006                           ETH_ALEN);
3007         }
3008
3009 accept_inv:
3010         wpas_p2p_set_own_freq_preference(wpa_s, 0);
3011
3012         best_freq = 0;
3013         freqs = os_calloc(wpa_s->num_multichan_concurrent,
3014                           sizeof(struct wpa_used_freq_data));
3015         if (freqs) {
3016                 int num_channels = wpa_s->num_multichan_concurrent;
3017                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
3018                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
3019                 os_free(freqs);
3020         }
3021
3022         /* Get one of the frequencies currently in use */
3023         if (best_freq > 0) {
3024                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
3025                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
3026
3027                 if (wpa_s->num_multichan_concurrent < 2 ||
3028                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
3029                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
3030                         *force_freq = best_freq;
3031                 }
3032         }
3033
3034         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
3035             wpas_p2p_num_unused_channels(wpa_s) > 0) {
3036                 if (*go == 0) {
3037                         /* We are the client */
3038                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
3039                                    "running a GO but we are capable of MCC, "
3040                                    "figure out the best channel to use");
3041                         *force_freq = 0;
3042                 } else if (!freq_included(wpa_s, channels, *force_freq)) {
3043                         /* We are the GO, and *force_freq is not in the
3044                          * intersection */
3045                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
3046                                    "in intersection but we are capable of MCC, "
3047                                    "figure out the best channel to use",
3048                                    *force_freq);
3049                         *force_freq = 0;
3050                 }
3051         }
3052
3053         return P2P_SC_SUCCESS;
3054 }
3055
3056
3057 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
3058                                      const u8 *ssid, size_t ssid_len,
3059                                      const u8 *go_dev_addr, u8 status,
3060                                      int op_freq)
3061 {
3062         struct wpa_supplicant *wpa_s = ctx;
3063         struct wpa_ssid *s;
3064
3065         for (s = wpa_s->conf->ssid; s; s = s->next) {
3066                 if (s->disabled == 2 &&
3067                     s->ssid_len == ssid_len &&
3068                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3069                         break;
3070         }
3071
3072         if (status == P2P_SC_SUCCESS) {
3073                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3074                            " was accepted; op_freq=%d MHz, SSID=%s",
3075                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3076                 if (s) {
3077                         int go = s->mode == WPAS_MODE_P2P_GO;
3078                         if (go) {
3079                                 wpa_msg_global(wpa_s, MSG_INFO,
3080                                                P2P_EVENT_INVITATION_ACCEPTED
3081                                                "sa=" MACSTR
3082                                                " persistent=%d freq=%d",
3083                                                MAC2STR(sa), s->id, op_freq);
3084                         } else {
3085                                 wpa_msg_global(wpa_s, MSG_INFO,
3086                                                P2P_EVENT_INVITATION_ACCEPTED
3087                                                "sa=" MACSTR
3088                                                " persistent=%d",
3089                                                MAC2STR(sa), s->id);
3090                         }
3091                         wpas_p2p_group_add_persistent(
3092                                 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, 0, NULL,
3093                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
3094                                 1);
3095                 } else if (bssid) {
3096                         wpa_s->user_initiated_pd = 0;
3097                         wpa_msg_global(wpa_s, MSG_INFO,
3098                                        P2P_EVENT_INVITATION_ACCEPTED
3099                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3100                                        " bssid=" MACSTR " unknown-network",
3101                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3102                                        MAC2STR(bssid));
3103                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3104                                       wpa_s->p2p_wps_method, 0, op_freq,
3105                                       ssid, ssid_len);
3106                 }
3107                 return;
3108         }
3109
3110         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3111                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3112                            " was rejected (status %u)", MAC2STR(sa), status);
3113                 return;
3114         }
3115
3116         if (!s) {
3117                 if (bssid) {
3118                         wpa_msg_global(wpa_s, MSG_INFO,
3119                                        P2P_EVENT_INVITATION_RECEIVED
3120                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3121                                        " bssid=" MACSTR " unknown-network",
3122                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3123                                        MAC2STR(bssid));
3124                 } else {
3125                         wpa_msg_global(wpa_s, MSG_INFO,
3126                                        P2P_EVENT_INVITATION_RECEIVED
3127                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3128                                        " unknown-network",
3129                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3130                 }
3131                 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3132                                                     bssid, 0, op_freq);
3133                 return;
3134         }
3135
3136         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3137                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3138                                "sa=" MACSTR " persistent=%d freq=%d",
3139                                MAC2STR(sa), s->id, op_freq);
3140         } else {
3141                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3142                                "sa=" MACSTR " persistent=%d",
3143                                MAC2STR(sa), s->id);
3144         }
3145         wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3146                                             s->id, op_freq);
3147 }
3148
3149
3150 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3151                                         struct wpa_ssid *ssid,
3152                                         const u8 *peer, int inv)
3153 {
3154         size_t i;
3155         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3156
3157         if (ssid == NULL)
3158                 return;
3159
3160         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3161                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3162                               ETH_ALEN) == 0)
3163                         break;
3164         }
3165         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3166                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3167                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3168                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3169                                    "due to invitation result", ssid->id);
3170                         wpas_notify_network_removed(wpa_s, ssid);
3171                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3172                         return;
3173                 }
3174                 return; /* Peer not found in client list */
3175         }
3176
3177         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3178                    "group %d client list%s",
3179                    MAC2STR(peer), ssid->id,
3180                    inv ? " due to invitation result" : "");
3181         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3182                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3183                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3184         ssid->num_p2p_clients--;
3185         if (p2p_wpa_s->conf->update_config &&
3186             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3187                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3188 }
3189
3190
3191 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3192                                           const u8 *peer)
3193 {
3194         struct wpa_ssid *ssid;
3195
3196         wpa_s = wpa_s->global->p2p_invite_group;
3197         if (wpa_s == NULL)
3198                 return; /* No known invitation group */
3199         ssid = wpa_s->current_ssid;
3200         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3201             !ssid->p2p_persistent_group)
3202                 return; /* Not operating as a GO in persistent group */
3203         ssid = wpas_p2p_get_persistent(wpa_s->p2pdev, peer,
3204                                        ssid->ssid, ssid->ssid_len);
3205         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3206 }
3207
3208
3209 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3210                                    const struct p2p_channels *channels,
3211                                    const u8 *peer, int neg_freq,
3212                                    int peer_oper_freq)
3213 {
3214         struct wpa_supplicant *wpa_s = ctx;
3215         struct wpa_ssid *ssid;
3216         int freq;
3217
3218         if (bssid) {
3219                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3220                                "status=%d " MACSTR,
3221                                status, MAC2STR(bssid));
3222         } else {
3223                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3224                                "status=%d ", status);
3225         }
3226         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3227
3228         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3229                    status, MAC2STR(peer));
3230         if (wpa_s->pending_invite_ssid_id == -1) {
3231                 struct wpa_supplicant *group_if =
3232                         wpa_s->global->p2p_invite_group;
3233
3234                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3235                         wpas_remove_persistent_client(wpa_s, peer);
3236
3237                 /*
3238                  * Invitation to an active group. If this is successful and we
3239                  * are the GO, set the client wait to postpone some concurrent
3240                  * operations and to allow provisioning and connection to happen
3241                  * more quickly.
3242                  */
3243                 if (status == P2P_SC_SUCCESS &&
3244                     group_if && group_if->current_ssid &&
3245                     group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3246                         os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3247 #ifdef CONFIG_TESTING_OPTIONS
3248                         if (group_if->p2p_go_csa_on_inv) {
3249                                 wpa_printf(MSG_DEBUG,
3250                                            "Testing: force P2P GO CSA after invitation");
3251                                 eloop_cancel_timeout(
3252                                         wpas_p2p_reconsider_moving_go,
3253                                         wpa_s, NULL);
3254                                 eloop_register_timeout(
3255                                         0, 50000,
3256                                         wpas_p2p_reconsider_moving_go,
3257                                         wpa_s, NULL);
3258                         }
3259 #endif /* CONFIG_TESTING_OPTIONS */
3260                 }
3261                 return;
3262         }
3263
3264         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3265                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3266                            "invitation exchange to indicate readiness for "
3267                            "re-invocation");
3268         }
3269
3270         if (status != P2P_SC_SUCCESS) {
3271                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3272                         ssid = wpa_config_get_network(
3273                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3274                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3275                 }
3276                 wpas_p2p_remove_pending_group_interface(wpa_s);
3277                 return;
3278         }
3279
3280         ssid = wpa_config_get_network(wpa_s->conf,
3281                                       wpa_s->pending_invite_ssid_id);
3282         if (ssid == NULL) {
3283                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3284                            "data matching with invitation");
3285                 return;
3286         }
3287
3288         /*
3289          * The peer could have missed our ctrl::ack frame for Invitation
3290          * Response and continue retransmitting the frame. To reduce the
3291          * likelihood of the peer not getting successful TX status for the
3292          * Invitation Response frame, wait a short time here before starting
3293          * the persistent group so that we will remain on the current channel to
3294          * acknowledge any possible retransmission from the peer.
3295          */
3296         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3297                 "starting persistent group");
3298         os_sleep(0, 50000);
3299
3300         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3301             freq_included(wpa_s, channels, neg_freq))
3302                 freq = neg_freq;
3303         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3304                  freq_included(wpa_s, channels, peer_oper_freq))
3305                 freq = peer_oper_freq;
3306         else
3307                 freq = 0;
3308
3309         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3310                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3311         wpas_p2p_group_add_persistent(wpa_s, ssid,
3312                                       ssid->mode == WPAS_MODE_P2P_GO,
3313                                       wpa_s->p2p_persistent_go_freq,
3314                                       freq,
3315                                       wpa_s->p2p_go_vht_center_freq2,
3316                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3317                                       wpa_s->p2p_go_max_oper_chwidth,
3318                                       wpa_s->p2p_go_he,
3319                                       channels,
3320                                       ssid->mode == WPAS_MODE_P2P_GO ?
3321                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3322                                       0, 1);
3323 }
3324
3325
3326 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3327                                     unsigned int freq)
3328 {
3329         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3330                 return 1;
3331         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3332 }
3333
3334
3335 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3336 {
3337         reg->channel[reg->channels] = chan;
3338         reg->channels++;
3339 }
3340
3341
3342 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3343                                      struct p2p_channels *chan,
3344                                      struct p2p_channels *cli_chan)
3345 {
3346         int i, cla = 0;
3347
3348         wpa_s->global->p2p_24ghz_social_channels = 1;
3349
3350         os_memset(cli_chan, 0, sizeof(*cli_chan));
3351
3352         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3353                    "band");
3354
3355         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3356         chan->reg_class[cla].reg_class = 81;
3357         chan->reg_class[cla].channels = 0;
3358         for (i = 0; i < 11; i++) {
3359                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3360                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3361         }
3362         if (chan->reg_class[cla].channels)
3363                 cla++;
3364
3365         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3366                    "band");
3367
3368         /* Operating class 115 - 5 GHz, channels 36-48 */
3369         chan->reg_class[cla].reg_class = 115;
3370         chan->reg_class[cla].channels = 0;
3371         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3372                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3373         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3374                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3375         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3376                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3377         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3378                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3379         if (chan->reg_class[cla].channels)
3380                 cla++;
3381
3382         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3383                    "band");
3384
3385         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3386         chan->reg_class[cla].reg_class = 124;
3387         chan->reg_class[cla].channels = 0;
3388         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3389                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3390         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3391                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3392         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3393                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3394         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3395                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3396         if (chan->reg_class[cla].channels)
3397                 cla++;
3398
3399         chan->reg_classes = cla;
3400         return 0;
3401 }
3402
3403
3404 static int has_channel(struct wpa_global *global,
3405                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3406 {
3407         int i;
3408         unsigned int freq;
3409
3410         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3411                 chan * 5;
3412         if (wpas_p2p_disallowed_freq(global, freq))
3413                 return NOT_ALLOWED;
3414
3415         for (i = 0; i < mode->num_channels; i++) {
3416                 if (mode->channels[i].chan == chan) {
3417                         if (flags)
3418                                 *flags = mode->channels[i].flag;
3419                         if (mode->channels[i].flag &
3420                             (HOSTAPD_CHAN_DISABLED |
3421                              HOSTAPD_CHAN_RADAR))
3422                                 return NOT_ALLOWED;
3423                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3424                                 return NO_IR;
3425                         return ALLOWED;
3426                 }
3427         }
3428
3429         return NOT_ALLOWED;
3430 }
3431
3432
3433 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3434                                      struct hostapd_hw_modes *mode,
3435                                      u8 channel)
3436 {
3437         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3438         size_t i;
3439
3440         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3441                 return 0;
3442
3443         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3444                 /*
3445                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3446                  * so the center channel is 6 channels away from the start/end.
3447                  */
3448                 if (channel >= center_channels[i] - 6 &&
3449                     channel <= center_channels[i] + 6)
3450                         return center_channels[i];
3451
3452         return 0;
3453 }
3454
3455
3456 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3457                                                struct hostapd_hw_modes *mode,
3458                                                u8 channel, u8 bw)
3459 {
3460         u8 center_chan;
3461         int i, flags;
3462         enum chan_allowed res, ret = ALLOWED;
3463
3464         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3465         if (!center_chan)
3466                 return NOT_ALLOWED;
3467         if (center_chan >= 58 && center_chan <= 138)
3468                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3469
3470         /* check all the channels are available */
3471         for (i = 0; i < 4; i++) {
3472                 int adj_chan = center_chan - 6 + i * 4;
3473
3474                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3475                 if (res == NOT_ALLOWED)
3476                         return NOT_ALLOWED;
3477                 if (res == NO_IR)
3478                         ret = NO_IR;
3479
3480                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3481                         return NOT_ALLOWED;
3482                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3483                         return NOT_ALLOWED;
3484                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3485                         return NOT_ALLOWED;
3486                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3487                         return NOT_ALLOWED;
3488         }
3489
3490         return ret;
3491 }
3492
3493
3494 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3495                                      struct hostapd_hw_modes *mode,
3496                                      u8 channel)
3497 {
3498         u8 center_channels[] = { 50, 114 };
3499         unsigned int i;
3500
3501         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3502                 return 0;
3503
3504         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3505                 /*
3506                  * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3507                  * so the center channel is 14 channels away from the start/end.
3508                  */
3509                 if (channel >= center_channels[i] - 14 &&
3510                     channel <= center_channels[i] + 14)
3511                         return center_channels[i];
3512
3513         return 0;
3514 }
3515
3516
3517 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3518                                                struct hostapd_hw_modes *mode,
3519                                                u8 channel, u8 bw)
3520 {
3521         u8 center_chan;
3522         int i, flags;
3523         enum chan_allowed res, ret = ALLOWED;
3524
3525         center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3526         if (!center_chan)
3527                 return NOT_ALLOWED;
3528         /* VHT 160 MHz uses DFS channels in most countries. */
3529
3530         /* Check all the channels are available */
3531         for (i = 0; i < 8; i++) {
3532                 int adj_chan = center_chan - 14 + i * 4;
3533
3534                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3535                 if (res == NOT_ALLOWED)
3536                         return NOT_ALLOWED;
3537
3538                 if (res == NO_IR)
3539                         ret = NO_IR;
3540
3541                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3542                         return NOT_ALLOWED;
3543                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3544                         return NOT_ALLOWED;
3545                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3546                         return NOT_ALLOWED;
3547                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3548                         return NOT_ALLOWED;
3549                 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3550                         return NOT_ALLOWED;
3551                 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3552                         return NOT_ALLOWED;
3553                 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3554                         return NOT_ALLOWED;
3555                 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3556                         return NOT_ALLOWED;
3557         }
3558
3559         return ret;
3560 }
3561
3562
3563 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3564                                                  struct hostapd_hw_modes *mode,
3565                                                  u8 channel, u8 bw)
3566 {
3567         int flag = 0;
3568         enum chan_allowed res, res2;
3569
3570         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3571         if (bw == BW40MINUS) {
3572                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3573                         return NOT_ALLOWED;
3574                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3575         } else if (bw == BW40PLUS) {
3576                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3577                         return NOT_ALLOWED;
3578                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3579         } else if (bw == BW80) {
3580                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3581         } else if (bw == BW160) {
3582                 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3583         }
3584
3585         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3586                 return NOT_ALLOWED;
3587         if (res == NO_IR || res2 == NO_IR)
3588                 return NO_IR;
3589         return res;
3590 }
3591
3592
3593 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3594                                    struct p2p_channels *chan,
3595                                    struct p2p_channels *cli_chan)
3596 {
3597         struct hostapd_hw_modes *mode;
3598         int cla, op, cli_cla;
3599
3600         if (wpa_s->hw.modes == NULL) {
3601                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3602                            "of all supported channels; assume dualband "
3603                            "support");
3604                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3605         }
3606
3607         cla = cli_cla = 0;
3608
3609         for (op = 0; global_op_class[op].op_class; op++) {
3610                 const struct oper_class_map *o = &global_op_class[op];
3611                 u8 ch;
3612                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3613
3614                 if (o->p2p == NO_P2P_SUPP)
3615                         continue;
3616
3617                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3618                 if (mode == NULL)
3619                         continue;
3620                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3621                         wpa_s->global->p2p_24ghz_social_channels = 1;
3622                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3623                         enum chan_allowed res;
3624                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3625                         if (res == ALLOWED) {
3626                                 if (reg == NULL) {
3627                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3628                                                    o->op_class);
3629                                         reg = &chan->reg_class[cla];
3630                                         cla++;
3631                                         reg->reg_class = o->op_class;
3632                                 }
3633                                 reg->channel[reg->channels] = ch;
3634                                 reg->channels++;
3635                         } else if (res == NO_IR &&
3636                                    wpa_s->conf->p2p_add_cli_chan) {
3637                                 if (cli_reg == NULL) {
3638                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3639                                                    o->op_class);
3640                                         cli_reg = &cli_chan->reg_class[cli_cla];
3641                                         cli_cla++;
3642                                         cli_reg->reg_class = o->op_class;
3643                                 }
3644                                 cli_reg->channel[cli_reg->channels] = ch;
3645                                 cli_reg->channels++;
3646                         }
3647                 }
3648                 if (reg) {
3649                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3650                                     reg->channel, reg->channels);
3651                 }
3652                 if (cli_reg) {
3653                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3654                                     cli_reg->channel, cli_reg->channels);
3655                 }
3656         }
3657
3658         chan->reg_classes = cla;
3659         cli_chan->reg_classes = cli_cla;
3660
3661         return 0;
3662 }
3663
3664
3665 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3666                            struct hostapd_hw_modes *mode, u8 channel)
3667 {
3668         int op;
3669         enum chan_allowed ret;
3670
3671         for (op = 0; global_op_class[op].op_class; op++) {
3672                 const struct oper_class_map *o = &global_op_class[op];
3673                 u8 ch;
3674
3675                 if (o->p2p == NO_P2P_SUPP)
3676                         continue;
3677
3678                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3679                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3680                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3681                             ch != channel)
3682                                 continue;
3683                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3684                         if (ret == ALLOWED)
3685                                 return (o->bw == BW40MINUS) ? -1 : 1;
3686                 }
3687         }
3688         return 0;
3689 }
3690
3691
3692 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3693                               struct hostapd_hw_modes *mode, u8 channel)
3694 {
3695         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3696                 return 0;
3697
3698         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3699 }
3700
3701
3702 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3703                                struct hostapd_hw_modes *mode, u8 channel)
3704 {
3705         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3706                 return 0;
3707         return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3708 }
3709
3710
3711 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3712                         size_t buf_len)
3713 {
3714         struct wpa_supplicant *wpa_s = ctx;
3715
3716         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3717                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3718                         break;
3719         }
3720         if (wpa_s == NULL)
3721                 return -1;
3722
3723         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3724 }
3725
3726
3727 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3728                                               const u8 *ssid, size_t ssid_len)
3729 {
3730         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3731                 struct wpa_ssid *s = wpa_s->current_ssid;
3732                 if (s == NULL)
3733                         continue;
3734                 if (s->mode != WPAS_MODE_P2P_GO &&
3735                     s->mode != WPAS_MODE_AP &&
3736                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3737                         continue;
3738                 if (s->ssid_len != ssid_len ||
3739                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3740                         continue;
3741                 return wpa_s;
3742         }
3743
3744         return NULL;
3745
3746 }
3747
3748
3749 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3750                                                   const u8 *peer_dev_addr)
3751 {
3752         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3753                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3754                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3755                         continue;
3756                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3757                         return wpa_s;
3758         }
3759
3760         return NULL;
3761 }
3762
3763
3764 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3765 {
3766         struct wpa_supplicant *wpa_s = ctx;
3767
3768         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3769 }
3770
3771
3772 static int wpas_is_concurrent_session_active(void *ctx)
3773 {
3774         struct wpa_supplicant *wpa_s = ctx;
3775         struct wpa_supplicant *ifs;
3776
3777         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3778                 if (ifs == wpa_s)
3779                         continue;
3780                 if (ifs->wpa_state > WPA_ASSOCIATED)
3781                         return 1;
3782         }
3783         return 0;
3784 }
3785
3786
3787 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3788 {
3789         struct wpa_supplicant *wpa_s = ctx;
3790         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3791 }
3792
3793
3794 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3795                                   const char *conf_p2p_dev)
3796 {
3797         struct wpa_interface iface;
3798         struct wpa_supplicant *p2pdev_wpa_s;
3799         char ifname[100];
3800         char force_name[100];
3801         int ret;
3802
3803         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3804                           wpa_s->ifname);
3805         if (os_snprintf_error(sizeof(ifname), ret))
3806                 return -1;
3807         force_name[0] = '\0';
3808         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3809         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3810                              force_name, wpa_s->pending_interface_addr, NULL);
3811         if (ret < 0) {
3812                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3813                 return ret;
3814         }
3815         os_strlcpy(wpa_s->pending_interface_name, ifname,
3816                    sizeof(wpa_s->pending_interface_name));
3817
3818         os_memset(&iface, 0, sizeof(iface));
3819         iface.p2p_mgmt = 1;
3820         iface.ifname = wpa_s->pending_interface_name;
3821         iface.driver = wpa_s->driver->name;
3822         iface.driver_param = wpa_s->conf->driver_param;
3823
3824         /*
3825          * If a P2P Device configuration file was given, use it as the interface
3826          * configuration file (instead of using parent's configuration file.
3827          */
3828         if (conf_p2p_dev) {
3829                 iface.confname = conf_p2p_dev;
3830                 iface.ctrl_interface = NULL;
3831         } else {
3832                 iface.confname = wpa_s->confname;
3833                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3834         }
3835
3836         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3837         if (!p2pdev_wpa_s) {
3838                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3839                 return -1;
3840         }
3841
3842         p2pdev_wpa_s->p2pdev = p2pdev_wpa_s;
3843         wpa_s->pending_interface_name[0] = '\0';
3844         return 0;
3845 }
3846
3847
3848 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3849                                const u8 *noa, size_t noa_len)
3850 {
3851         struct wpa_supplicant *wpa_s, *intf = ctx;
3852         char hex[100];
3853
3854         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3855                 if (wpa_s->waiting_presence_resp)
3856                         break;
3857         }
3858         if (!wpa_s) {
3859                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3860                 return;
3861         }
3862         wpa_s->waiting_presence_resp = 0;
3863
3864         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3865         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3866                 " status=%u noa=%s", MAC2STR(src), status, hex);
3867 }
3868
3869
3870 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3871                                      size_t ssid_len, u8 *go_dev_addr,
3872                                      u8 *ret_ssid, size_t *ret_ssid_len,
3873                                      u8 *intended_iface_addr)
3874 {
3875         struct wpa_supplicant *wpa_s = ctx;
3876         struct wpa_ssid *s;
3877
3878         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3879         if (s) {
3880                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3881                 *ret_ssid_len = s->ssid_len;
3882                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3883
3884                 if (s->mode != WPAS_MODE_P2P_GO) {
3885                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3886                 } else if (wpas_p2p_create_iface(wpa_s)) {
3887                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3888                                 return 0;
3889
3890                         os_memcpy(intended_iface_addr,
3891                                   wpa_s->pending_interface_addr, ETH_ALEN);
3892                 } else {
3893                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3894                                   ETH_ALEN);
3895                 }
3896                 return 1;
3897         }
3898
3899         return 0;
3900 }
3901
3902
3903 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3904                             u8 *ssid, size_t *ssid_len, int *group_iface,
3905                             unsigned int *freq)
3906 {
3907         struct wpa_supplicant *wpa_s = ctx;
3908         struct wpa_supplicant *go;
3909         struct wpa_ssid *s;
3910
3911         /*
3912          * group_iface will be set to 1 only if a dedicated interface for P2P
3913          * role is required. First, we try to reuse an active GO. However,
3914          * if it is not present, we will try to reactivate an existing
3915          * persistent group and set group_iface to 1, so the caller will know
3916          * that the pending interface should be used.
3917          */
3918         *group_iface = 0;
3919
3920         if (freq)
3921                 *freq = 0;
3922
3923         go = wpas_p2p_get_go_group(wpa_s);
3924         if (!go) {
3925                 s = wpas_p2p_get_persistent_go(wpa_s);
3926                 *group_iface = wpas_p2p_create_iface(wpa_s);
3927                 if (s)
3928                         os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3929                 else
3930                         return 0;
3931         } else {
3932                 s = go->current_ssid;
3933                 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3934                 if (freq)
3935                         *freq = go->assoc_freq;
3936         }
3937
3938         os_memcpy(ssid, s->ssid, s->ssid_len);
3939         *ssid_len = s->ssid_len;
3940
3941         return 1;
3942 }
3943
3944
3945 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3946                                     const u8 *ssid, size_t ssid_len)
3947 {
3948         struct wpa_supplicant *wpa_s = ctx;
3949         struct wpa_ssid *s;
3950         int save_config = 0;
3951         size_t i;
3952
3953         /* Start with our first choice of Persistent Groups */
3954         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3955                 if (go && ssid && ssid_len &&
3956                     s->ssid_len == ssid_len &&
3957                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3958                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3959                         break;
3960
3961                 /* Remove stale persistent group */
3962                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3963                         wpa_dbg(wpa_s, MSG_DEBUG,
3964                                 "P2P: Remove stale persistent group id=%d",
3965                                 s->id);
3966                         wpas_notify_persistent_group_removed(wpa_s, s);
3967                         wpa_config_remove_network(wpa_s->conf, s->id);
3968                         save_config = 1;
3969                         continue;
3970                 }
3971
3972                 for (i = 0; i < s->num_p2p_clients; i++) {
3973                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3974                                       peer, ETH_ALEN) != 0)
3975                                 continue;
3976
3977                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3978                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3979                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3980                         break;
3981                 }
3982                 s->num_p2p_clients--;
3983                 save_config = 1;
3984         }
3985
3986         if (save_config)
3987                 p2p_config_write(wpa_s);
3988
3989         /* Return TRUE if valid SSID remains */
3990         return s != NULL;
3991 }
3992
3993
3994 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3995                                        const u8 *feat_cap, size_t feat_cap_len)
3996 {
3997         static const char pref[] = " feature_cap=";
3998         int ret;
3999
4000         buf[0] = '\0';
4001
4002         /*
4003          * We expect a feature capability to contain at least one byte to be
4004          * reported. The string buffer provided by the caller function is
4005          * expected to be big enough to contain all bytes of the attribute for
4006          * known specifications. This function truncates the reported bytes if
4007          * the feature capability data exceeds the string buffer size.
4008          */
4009         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
4010                 return;
4011
4012         os_memcpy(buf, pref, sizeof(pref));
4013         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
4014                                buf_len - sizeof(pref) + 1,
4015                                feat_cap, feat_cap_len);
4016
4017         if (ret != (2 * (int) feat_cap_len))
4018                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
4019 }
4020
4021
4022 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
4023                                     const u8 *adv_mac, const u8 *ses_mac,
4024                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
4025                                     u8 conncap, int passwd_id,
4026                                     const u8 *persist_ssid,
4027                                     size_t persist_ssid_size, int response_done,
4028                                     int prov_start, const char *session_info,
4029                                     const u8 *feat_cap, size_t feat_cap_len,
4030                                     unsigned int freq,
4031                                     const u8 *group_ssid, size_t group_ssid_len)
4032 {
4033         struct wpa_supplicant *wpa_s = ctx;
4034         u8 mac[ETH_ALEN];
4035         struct wpa_ssid *persistent_go, *stale, *s = NULL;
4036         int save_config = 0;
4037         struct wpa_supplicant *go_wpa_s;
4038         char feat_cap_str[256];
4039
4040         if (!dev)
4041                 return;
4042
4043         os_memset(mac, 0, ETH_ALEN);
4044         if (!adv_mac)
4045                 adv_mac = mac;
4046         if (!ses_mac)
4047                 ses_mac = mac;
4048         if (!grp_mac)
4049                 grp_mac = mac;
4050
4051         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
4052                                    feat_cap, feat_cap_len);
4053
4054         if (prov_start) {
4055                 if (session_info == NULL) {
4056                         wpa_msg_global(wpa_s, MSG_INFO,
4057                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
4058                                        " adv_id=%x conncap=%x"
4059                                        " adv_mac=" MACSTR
4060                                        " session=%x mac=" MACSTR
4061                                        " dev_passwd_id=%d%s",
4062                                        MAC2STR(dev), adv_id, conncap,
4063                                        MAC2STR(adv_mac),
4064                                        ses_id, MAC2STR(ses_mac),
4065                                        passwd_id, feat_cap_str);
4066                 } else {
4067                         wpa_msg_global(wpa_s, MSG_INFO,
4068                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
4069                                        " adv_id=%x conncap=%x"
4070                                        " adv_mac=" MACSTR
4071                                        " session=%x mac=" MACSTR
4072                                        " dev_passwd_id=%d info='%s'%s",
4073                                        MAC2STR(dev), adv_id, conncap,
4074                                        MAC2STR(adv_mac),
4075                                        ses_id, MAC2STR(ses_mac),
4076                                        passwd_id, session_info, feat_cap_str);
4077                 }
4078                 return;
4079         }
4080
4081         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
4082         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4083
4084         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4085                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4086                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4087
4088                 if (persistent_go && !persistent_go->num_p2p_clients) {
4089                         /* remove empty persistent GO */
4090                         wpa_dbg(wpa_s, MSG_DEBUG,
4091                                 "P2P: Remove empty persistent group id=%d",
4092                                 persistent_go->id);
4093                         wpas_notify_persistent_group_removed(wpa_s,
4094                                                              persistent_go);
4095                         wpa_config_remove_network(wpa_s->conf,
4096                                                   persistent_go->id);
4097                 }
4098
4099                 wpa_msg_global(wpa_s, MSG_INFO,
4100                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4101                                " status=%d"
4102                                " adv_id=%x adv_mac=" MACSTR
4103                                " session=%x mac=" MACSTR "%s",
4104                                MAC2STR(dev), status,
4105                                adv_id, MAC2STR(adv_mac),
4106                                ses_id, MAC2STR(ses_mac), feat_cap_str);
4107                 return;
4108         }
4109
4110         /* Clean up stale persistent groups with this device */
4111         if (persist_ssid && persist_ssid_size)
4112                 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4113                                             persist_ssid_size);
4114
4115         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4116             is_zero_ether_addr(grp_mac)) {
4117                 wpa_dbg(wpa_s, MSG_ERROR,
4118                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4119                 return;
4120         }
4121
4122         for (;;) {
4123                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4124                 if (!stale)
4125                         break;
4126
4127                 if (s && s->ssid_len == stale->ssid_len &&
4128                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4129                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4130                         break;
4131
4132                 /* Remove stale persistent group */
4133                 if (stale->mode != WPAS_MODE_P2P_GO ||
4134                     stale->num_p2p_clients <= 1) {
4135                         wpa_dbg(wpa_s, MSG_DEBUG,
4136                                 "P2P: Remove stale persistent group id=%d",
4137                                 stale->id);
4138                         wpas_notify_persistent_group_removed(wpa_s, stale);
4139                         wpa_config_remove_network(wpa_s->conf, stale->id);
4140                 } else {
4141                         size_t i;
4142
4143                         for (i = 0; i < stale->num_p2p_clients; i++) {
4144                                 if (os_memcmp(stale->p2p_client_list +
4145                                               i * ETH_ALEN,
4146                                               dev, ETH_ALEN) == 0) {
4147                                         os_memmove(stale->p2p_client_list +
4148                                                    i * ETH_ALEN,
4149                                                    stale->p2p_client_list +
4150                                                    (i + 1) * ETH_ALEN,
4151                                                    (stale->num_p2p_clients -
4152                                                     i - 1) * ETH_ALEN);
4153                                         break;
4154                                 }
4155                         }
4156                         stale->num_p2p_clients--;
4157                 }
4158                 save_config = 1;
4159         }
4160
4161         if (save_config)
4162                 p2p_config_write(wpa_s);
4163
4164         if (s) {
4165                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4166                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4167
4168                 if (persistent_go && s != persistent_go &&
4169                     !persistent_go->num_p2p_clients) {
4170                         /* remove empty persistent GO */
4171                         wpa_dbg(wpa_s, MSG_DEBUG,
4172                                 "P2P: Remove empty persistent group id=%d",
4173                                 persistent_go->id);
4174                         wpas_notify_persistent_group_removed(wpa_s,
4175                                                              persistent_go);
4176                         wpa_config_remove_network(wpa_s->conf,
4177                                                   persistent_go->id);
4178                         /* Save config */
4179                 }
4180
4181                 wpa_msg_global(wpa_s, MSG_INFO,
4182                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4183                                " status=%d"
4184                                " adv_id=%x adv_mac=" MACSTR
4185                                " session=%x mac=" MACSTR
4186                                " persist=%d%s",
4187                                MAC2STR(dev), status,
4188                                adv_id, MAC2STR(adv_mac),
4189                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4190                 return;
4191         }
4192
4193         wpa_s->global->pending_p2ps_group = 0;
4194         wpa_s->global->pending_p2ps_group_freq = 0;
4195
4196         if (conncap == P2PS_SETUP_GROUP_OWNER) {
4197                 /*
4198                  * We need to copy the interface name. Simply saving a
4199                  * pointer isn't enough, since if we use pending_interface_name
4200                  * it will be overwritten when the group is added.
4201                  */
4202                 char go_ifname[100];
4203
4204                 go_ifname[0] = '\0';
4205                 if (!go_wpa_s) {
4206                         if (!response_done) {
4207                                 wpa_s->global->pending_p2ps_group = 1;
4208                                 wpa_s->global->pending_p2ps_group_freq = freq;
4209                         }
4210
4211                         if (!wpas_p2p_create_iface(wpa_s))
4212                                 os_memcpy(go_ifname, wpa_s->ifname,
4213                                           sizeof(go_ifname));
4214                         else if (wpa_s->pending_interface_name[0])
4215                                 os_memcpy(go_ifname,
4216                                           wpa_s->pending_interface_name,
4217                                           sizeof(go_ifname));
4218
4219                         if (!go_ifname[0]) {
4220                                 wpas_p2ps_prov_complete(
4221                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4222                                         dev, adv_mac, ses_mac,
4223                                         grp_mac, adv_id, ses_id, 0, 0,
4224                                         NULL, 0, 0, 0, NULL, NULL, 0, 0,
4225                                         NULL, 0);
4226                                 return;
4227                         }
4228
4229                         /* If PD Resp complete, start up the GO */
4230                         if (response_done && persistent_go) {
4231                                 wpas_p2p_group_add_persistent(
4232                                         wpa_s, persistent_go,
4233                                         0, 0, freq, 0, 0, 0, 0, 0, NULL,
4234                                         persistent_go->mode ==
4235                                         WPAS_MODE_P2P_GO ?
4236                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4237                                         0, 0);
4238                         } else if (response_done) {
4239                                 wpas_p2p_group_add(wpa_s, 1, freq,
4240                                                    0, 0, 0, 0, 0);
4241                         }
4242
4243                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4244                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4245                                           ETH_ALEN);
4246                                 wpa_s->p2ps_method_config_any = 1;
4247                         }
4248                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4249                         os_memcpy(go_ifname, go_wpa_s->ifname,
4250                                   sizeof(go_ifname));
4251
4252                         if (is_zero_ether_addr(grp_mac)) {
4253                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4254                                         "P2P: Setting PIN-1 for ANY");
4255                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4256                                                           "12345670", NULL, 0,
4257                                                           0);
4258                         } else {
4259                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4260                                         "P2P: Setting PIN-1 for " MACSTR,
4261                                         MAC2STR(grp_mac));
4262                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4263                                                           "12345670", NULL, 0,
4264                                                           0);
4265                         }
4266
4267                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4268                         wpa_s->p2ps_method_config_any = 1;
4269                 }
4270
4271                 wpa_msg_global(wpa_s, MSG_INFO,
4272                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4273                                " status=%d conncap=%x"
4274                                " adv_id=%x adv_mac=" MACSTR
4275                                " session=%x mac=" MACSTR
4276                                " dev_passwd_id=%d go=%s%s",
4277                                MAC2STR(dev), status, conncap,
4278                                adv_id, MAC2STR(adv_mac),
4279                                ses_id, MAC2STR(ses_mac),
4280                                passwd_id, go_ifname, feat_cap_str);
4281                 return;
4282         }
4283
4284         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4285                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4286
4287         if (persistent_go && !persistent_go->num_p2p_clients) {
4288                 /* remove empty persistent GO */
4289                 wpa_dbg(wpa_s, MSG_DEBUG,
4290                         "P2P: Remove empty persistent group id=%d",
4291                         persistent_go->id);
4292                 wpas_notify_persistent_group_removed(wpa_s, persistent_go);
4293                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4294         }
4295
4296         if (conncap == P2PS_SETUP_CLIENT) {
4297                 char ssid_hex[32 * 2 + 1];
4298
4299                 if (group_ssid)
4300                         wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex),
4301                                          group_ssid, group_ssid_len);
4302                 else
4303                         ssid_hex[0] = '\0';
4304                 wpa_msg_global(wpa_s, MSG_INFO,
4305                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4306                                " status=%d conncap=%x"
4307                                " adv_id=%x adv_mac=" MACSTR
4308                                " session=%x mac=" MACSTR
4309                                " dev_passwd_id=%d join=" MACSTR "%s%s%s",
4310                                MAC2STR(dev), status, conncap,
4311                                adv_id, MAC2STR(adv_mac),
4312                                ses_id, MAC2STR(ses_mac),
4313                                passwd_id, MAC2STR(grp_mac), feat_cap_str,
4314                                group_ssid ? " group_ssid=" : "", ssid_hex);
4315         } else {
4316                 wpa_msg_global(wpa_s, MSG_INFO,
4317                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4318                                " status=%d conncap=%x"
4319                                " adv_id=%x adv_mac=" MACSTR
4320                                " session=%x mac=" MACSTR
4321                                " dev_passwd_id=%d%s",
4322                                MAC2STR(dev), status, conncap,
4323                                adv_id, MAC2STR(adv_mac),
4324                                ses_id, MAC2STR(ses_mac),
4325                                passwd_id, feat_cap_str);
4326         }
4327 }
4328
4329
4330 static int _wpas_p2p_in_progress(void *ctx)
4331 {
4332         struct wpa_supplicant *wpa_s = ctx;
4333         return wpas_p2p_in_progress(wpa_s);
4334 }
4335
4336
4337 static int wpas_prov_disc_resp_cb(void *ctx)
4338 {
4339         struct wpa_supplicant *wpa_s = ctx;
4340         struct wpa_ssid *persistent_go;
4341         unsigned int freq;
4342
4343         if (!wpa_s->global->pending_p2ps_group)
4344                 return 0;
4345
4346         freq = wpa_s->global->pending_p2ps_group_freq;
4347         wpa_s->global->pending_p2ps_group_freq = 0;
4348         wpa_s->global->pending_p2ps_group = 0;
4349
4350         if (wpas_p2p_get_go_group(wpa_s))
4351                 return 0;
4352         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4353
4354         if (persistent_go) {
4355                 wpas_p2p_group_add_persistent(
4356                         wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, 0, NULL,
4357                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4358                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4359         } else {
4360                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0, 0);
4361         }
4362
4363         return 1;
4364 }
4365
4366
4367 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4368                                        unsigned int *len,
4369                                        unsigned int *freq_list)
4370 {
4371         struct wpa_supplicant *wpa_s = ctx;
4372
4373         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4374                                           WPA_IF_P2P_CLIENT, len, freq_list);
4375 }
4376
4377
4378 int wpas_p2p_mac_setup(struct wpa_supplicant *wpa_s)
4379 {
4380         u8 addr[ETH_ALEN] = {0};
4381
4382         if (wpa_s->conf->p2p_device_random_mac_addr == 0)
4383                 return 0;
4384
4385         if (!wpa_s->conf->ssid) {
4386                 if (random_mac_addr(addr) < 0) {
4387                         wpa_msg(wpa_s, MSG_INFO,
4388                                 "Failed to generate random MAC address");
4389                         return -EINVAL;
4390                 }
4391
4392                 /* Store generated MAC address. */
4393                 os_memcpy(wpa_s->conf->p2p_device_persistent_mac_addr, addr,
4394                           ETH_ALEN);
4395         } else {
4396                 /* If there are existing saved groups, restore last MAC address.
4397                  * if there is no last used MAC address, the last one is
4398                  * factory MAC. */
4399                 if (is_zero_ether_addr(
4400                             wpa_s->conf->p2p_device_persistent_mac_addr))
4401                         return 0;
4402                 os_memcpy(addr, wpa_s->conf->p2p_device_persistent_mac_addr,
4403                           ETH_ALEN);
4404                 wpa_msg(wpa_s, MSG_DEBUG, "Restore last used MAC address.");
4405         }
4406
4407         if (wpa_drv_set_mac_addr(wpa_s, addr) < 0) {
4408                 wpa_msg(wpa_s, MSG_INFO,
4409                         "Failed to set random MAC address");
4410                 return -EINVAL;
4411         }
4412
4413         if (wpa_supplicant_update_mac_addr(wpa_s) < 0) {
4414                 wpa_msg(wpa_s, MSG_INFO,
4415                         "Could not update MAC address information");
4416                 return -EINVAL;
4417         }
4418
4419         wpa_msg(wpa_s, MSG_DEBUG, "Using random MAC address " MACSTR,
4420                 MAC2STR(addr));
4421
4422         return 0;
4423 }
4424
4425
4426 /**
4427  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4428  * @global: Pointer to global data from wpa_supplicant_init()
4429  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4430  * Returns: 0 on success, -1 on failure
4431  */
4432 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4433 {
4434         struct p2p_config p2p;
4435         int i;
4436
4437         if (wpa_s->conf->p2p_disabled)
4438                 return 0;
4439
4440         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4441                 return 0;
4442
4443         if (global->p2p)
4444                 return 0;
4445
4446         if (wpas_p2p_mac_setup(wpa_s) < 0) {
4447                 wpa_msg(wpa_s, MSG_ERROR,
4448                         "Failed to initialize P2P random MAC address.");
4449                 return -1;
4450         }
4451
4452         os_memset(&p2p, 0, sizeof(p2p));
4453         p2p.cb_ctx = wpa_s;
4454         p2p.debug_print = wpas_p2p_debug_print;
4455         p2p.p2p_scan = wpas_p2p_scan;
4456         p2p.send_action = wpas_send_action;
4457         p2p.send_action_done = wpas_send_action_done;
4458         p2p.go_neg_completed = wpas_go_neg_completed;
4459         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4460         p2p.dev_found = wpas_dev_found;
4461         p2p.dev_lost = wpas_dev_lost;
4462         p2p.find_stopped = wpas_find_stopped;
4463         p2p.start_listen = wpas_start_listen;
4464         p2p.stop_listen = wpas_stop_listen;
4465         p2p.send_probe_resp = wpas_send_probe_resp;
4466         p2p.sd_request = wpas_sd_request;
4467         p2p.sd_response = wpas_sd_response;
4468         p2p.prov_disc_req = wpas_prov_disc_req;
4469         p2p.prov_disc_resp = wpas_prov_disc_resp;
4470         p2p.prov_disc_fail = wpas_prov_disc_fail;
4471         p2p.invitation_process = wpas_invitation_process;
4472         p2p.invitation_received = wpas_invitation_received;
4473         p2p.invitation_result = wpas_invitation_result;
4474         p2p.get_noa = wpas_get_noa;
4475         p2p.go_connected = wpas_go_connected;
4476         p2p.presence_resp = wpas_presence_resp;
4477         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4478         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4479         p2p.get_persistent_group = wpas_get_persistent_group;
4480         p2p.get_go_info = wpas_get_go_info;
4481         p2p.remove_stale_groups = wpas_remove_stale_groups;
4482         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4483         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4484         p2p.p2ps_group_capability = p2ps_group_capability;
4485         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4486
4487         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4488         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4489         p2p.dev_name = wpa_s->conf->device_name;
4490         p2p.manufacturer = wpa_s->conf->manufacturer;
4491         p2p.model_name = wpa_s->conf->model_name;
4492         p2p.model_number = wpa_s->conf->model_number;
4493         p2p.serial_number = wpa_s->conf->serial_number;
4494         if (wpa_s->wps) {
4495                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4496                 p2p.config_methods = wpa_s->wps->config_methods;
4497         }
4498
4499         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4500                 wpa_printf(MSG_ERROR,
4501                            "P2P: Failed to configure supported channel list");
4502                 return -1;
4503         }
4504
4505         if (wpa_s->conf->p2p_listen_reg_class &&
4506             wpa_s->conf->p2p_listen_channel) {
4507                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4508                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4509                 p2p.channel_forced = 1;
4510         } else {
4511                 /*
4512                  * Pick one of the social channels randomly as the listen
4513                  * channel.
4514                  */
4515                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4516                                                  &p2p.channel,
4517                                                  &global->p2p_go_avoid_freq,
4518                                                  &global->p2p_disallow_freq) !=
4519                     0) {
4520                         wpa_printf(MSG_INFO,
4521                                    "P2P: No social channels supported by the driver - do not enable P2P");
4522                         return 0;
4523                 }
4524                 p2p.channel_forced = 0;
4525         }
4526         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4527                    p2p.reg_class, p2p.channel);
4528
4529         if (wpa_s->conf->p2p_oper_reg_class &&
4530             wpa_s->conf->p2p_oper_channel) {
4531                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4532                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4533                 p2p.cfg_op_channel = 1;
4534                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4535                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4536
4537         } else {
4538                 /*
4539                  * Use random operation channel from 2.4 GHz band social
4540                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4541                  * other preference is indicated.
4542                  */
4543                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4544                                                  &p2p.op_channel, NULL,
4545                                                  NULL) != 0) {
4546                         wpa_printf(MSG_INFO,
4547                                    "P2P: Failed to select random social channel as operation channel");
4548                         p2p.op_reg_class = 0;
4549                         p2p.op_channel = 0;
4550                         /* This will be overridden during group setup in
4551                          * p2p_prepare_channel(), so allow setup to continue. */
4552                 }
4553                 p2p.cfg_op_channel = 0;
4554                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4555                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4556         }
4557
4558         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4559                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4560                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4561         }
4562
4563         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4564                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4565                 p2p.country[2] = 0x04;
4566         } else
4567                 os_memcpy(p2p.country, "XX\x04", 3);
4568
4569         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4570                   WPS_DEV_TYPE_LEN);
4571
4572         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4573         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4574                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4575
4576         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4577                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4578
4579         p2p.max_peers = 100;
4580
4581         if (wpa_s->conf->p2p_ssid_postfix) {
4582                 p2p.ssid_postfix_len =
4583                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4584                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4585                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4586                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4587                           p2p.ssid_postfix_len);
4588         }
4589
4590         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4591
4592         p2p.max_listen = wpa_s->max_remain_on_chan;
4593
4594         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4595             wpa_s->conf->p2p_passphrase_len <= 63)
4596                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4597         else
4598                 p2p.passphrase_len = 8;
4599
4600         global->p2p = p2p_init(&p2p);
4601         if (global->p2p == NULL)
4602                 return -1;
4603         global->p2p_init_wpa_s = wpa_s;
4604
4605         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4606                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4607                         continue;
4608                 p2p_add_wps_vendor_extension(
4609                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4610         }
4611
4612         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4613
4614         return 0;
4615 }
4616
4617
4618 /**
4619  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4620  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4621  *
4622  * This function deinitialize per-interface P2P data.
4623  */
4624 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4625 {
4626         if (wpa_s->driver && wpa_s->drv_priv)
4627                 wpa_drv_probe_req_report(wpa_s, 0);
4628
4629         if (wpa_s->go_params) {
4630                 /* Clear any stored provisioning info */
4631                 p2p_clear_provisioning_info(
4632                         wpa_s->global->p2p,
4633                         wpa_s->go_params->peer_device_addr);
4634         }
4635
4636         os_free(wpa_s->go_params);
4637         wpa_s->go_params = NULL;
4638         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4639         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4640         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4641         wpa_s->p2p_long_listen = 0;
4642         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4643         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4644         wpas_p2p_remove_pending_group_interface(wpa_s);
4645         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4646         wpas_p2p_listen_work_done(wpa_s);
4647         if (wpa_s->p2p_send_action_work) {
4648                 os_free(wpa_s->p2p_send_action_work->ctx);
4649                 radio_work_done(wpa_s->p2p_send_action_work);
4650                 wpa_s->p2p_send_action_work = NULL;
4651         }
4652         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4653
4654         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4655         wpa_s->p2p_oob_dev_pw = NULL;
4656
4657         os_free(wpa_s->p2p_group_common_freqs);
4658         wpa_s->p2p_group_common_freqs = NULL;
4659         wpa_s->p2p_group_common_freqs_num = 0;
4660
4661         /* TODO: remove group interface from the driver if this wpa_s instance
4662          * is on top of a P2P group interface */
4663 }
4664
4665
4666 /**
4667  * wpas_p2p_deinit_global - Deinitialize global P2P module
4668  * @global: Pointer to global data from wpa_supplicant_init()
4669  *
4670  * This function deinitializes the global (per device) P2P module.
4671  */
4672 static void wpas_p2p_deinit_global(struct wpa_global *global)
4673 {
4674         struct wpa_supplicant *wpa_s, *tmp;
4675
4676         wpa_s = global->ifaces;
4677
4678         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4679
4680         /* Remove remaining P2P group interfaces */
4681         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4682                 wpa_s = wpa_s->next;
4683         while (wpa_s) {
4684                 tmp = global->ifaces;
4685                 while (tmp &&
4686                        (tmp == wpa_s ||
4687                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4688                         tmp = tmp->next;
4689                 }
4690                 if (tmp == NULL)
4691                         break;
4692                 /* Disconnect from the P2P group and deinit the interface */
4693                 wpas_p2p_disconnect(tmp);
4694         }
4695
4696         /*
4697          * Deinit GO data on any possibly remaining interface (if main
4698          * interface is used as GO).
4699          */
4700         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4701                 if (wpa_s->ap_iface)
4702                         wpas_p2p_group_deinit(wpa_s);
4703         }
4704
4705         p2p_deinit(global->p2p);
4706         global->p2p = NULL;
4707         global->p2p_init_wpa_s = NULL;
4708 }
4709
4710
4711 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4712 {
4713         if (wpa_s->conf->p2p_no_group_iface)
4714                 return 0; /* separate interface disabled per configuration */
4715         if (wpa_s->drv_flags &
4716             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4717              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4718                 return 1; /* P2P group requires a new interface in every case
4719                            */
4720         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4721                 return 0; /* driver does not support concurrent operations */
4722         if (wpa_s->global->ifaces->next)
4723                 return 1; /* more that one interface already in use */
4724         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4725                 return 1; /* this interface is already in use */
4726         return 0;
4727 }
4728
4729
4730 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4731                                  const u8 *peer_addr,
4732                                  enum p2p_wps_method wps_method,
4733                                  int go_intent, const u8 *own_interface_addr,
4734                                  unsigned int force_freq, int persistent_group,
4735                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4736 {
4737         if (persistent_group && wpa_s->conf->persistent_reconnect)
4738                 persistent_group = 2;
4739
4740         /*
4741          * Increase GO config timeout if HT40 is used since it takes some time
4742          * to scan channels for coex purposes before the BSS can be started.
4743          */
4744         p2p_set_config_timeout(wpa_s->global->p2p,
4745                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4746
4747         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4748                            go_intent, own_interface_addr, force_freq,
4749                            persistent_group, ssid ? ssid->ssid : NULL,
4750                            ssid ? ssid->ssid_len : 0,
4751                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4752                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4753                            0);
4754 }
4755
4756
4757 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4758                                 const u8 *peer_addr,
4759                                 enum p2p_wps_method wps_method,
4760                                 int go_intent, const u8 *own_interface_addr,
4761                                 unsigned int force_freq, int persistent_group,
4762                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4763 {
4764         if (persistent_group && wpa_s->conf->persistent_reconnect)
4765                 persistent_group = 2;
4766
4767         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4768                              go_intent, own_interface_addr, force_freq,
4769                              persistent_group, ssid ? ssid->ssid : NULL,
4770                              ssid ? ssid->ssid_len : 0, pref_freq,
4771                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4772                              0);
4773 }
4774
4775
4776 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4777 {
4778         wpa_s->p2p_join_scan_count++;
4779         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4780                    wpa_s->p2p_join_scan_count);
4781         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4782                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4783                            " for join operationg - stop join attempt",
4784                            MAC2STR(wpa_s->pending_join_iface_addr));
4785                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4786                 if (wpa_s->p2p_auto_pd) {
4787                         wpa_s->p2p_auto_pd = 0;
4788                         wpa_msg_global(wpa_s, MSG_INFO,
4789                                        P2P_EVENT_PROV_DISC_FAILURE
4790                                        " p2p_dev_addr=" MACSTR " status=N/A",
4791                                        MAC2STR(wpa_s->pending_join_dev_addr));
4792                         return;
4793                 }
4794                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4795                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4796                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4797         }
4798 }
4799
4800
4801 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4802 {
4803         int res;
4804         unsigned int num, i;
4805         struct wpa_used_freq_data *freqs;
4806
4807         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4808                 /* Multiple channels are supported and not all are in use */
4809                 return 0;
4810         }
4811
4812         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4813                           sizeof(struct wpa_used_freq_data));
4814         if (!freqs)
4815                 return 1;
4816
4817         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4818                                         wpa_s->num_multichan_concurrent);
4819
4820         for (i = 0; i < num; i++) {
4821                 if (freqs[i].freq == freq) {
4822                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4823                                    freq);
4824                         res = 0;
4825                         goto exit_free;
4826                 }
4827         }
4828
4829         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4830         res = 1;
4831
4832 exit_free:
4833         os_free(freqs);
4834         return res;
4835 }
4836
4837
4838 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4839                             const u8 *peer_dev_addr)
4840 {
4841         struct wpa_bss *bss;
4842         int updated;
4843
4844         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4845         if (bss == NULL)
4846                 return -1;
4847         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4848                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4849                            "last scan");
4850                 return 0;
4851         }
4852
4853         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4854                                     &bss->last_update);
4855         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4856                    "%ld.%06ld (%supdated in last scan)",
4857                    bss->last_update.sec, bss->last_update.usec,
4858                    updated ? "": "not ");
4859
4860         return updated;
4861 }
4862
4863
4864 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4865                                    struct wpa_scan_results *scan_res)
4866 {
4867         struct wpa_bss *bss = NULL;
4868         int freq;
4869         u8 iface_addr[ETH_ALEN];
4870
4871         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4872
4873         if (wpa_s->global->p2p_disabled)
4874                 return;
4875
4876         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4877                    scan_res ? (int) scan_res->num : -1,
4878                    wpa_s->p2p_auto_join ? "auto_" : "");
4879
4880         if (scan_res)
4881                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4882
4883         if (wpa_s->p2p_auto_pd) {
4884                 int join = wpas_p2p_peer_go(wpa_s,
4885                                             wpa_s->pending_join_dev_addr);
4886                 if (join == 0 &&
4887                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4888                         wpa_s->auto_pd_scan_retry++;
4889                         bss = wpa_bss_get_bssid_latest(
4890                                 wpa_s, wpa_s->pending_join_dev_addr);
4891                         if (bss) {
4892                                 freq = bss->freq;
4893                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4894                                            "the peer " MACSTR " at %d MHz",
4895                                            wpa_s->auto_pd_scan_retry,
4896                                            MAC2STR(wpa_s->
4897                                                    pending_join_dev_addr),
4898                                            freq);
4899                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4900                                 return;
4901                         }
4902                 }
4903
4904                 if (join < 0)
4905                         join = 0;
4906
4907                 wpa_s->p2p_auto_pd = 0;
4908                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4909                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4910                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4911                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4912                                       wpa_s->pending_join_dev_addr, NULL,
4913                                       wpa_s->pending_pd_config_methods, join,
4914                                       0, wpa_s->user_initiated_pd) < 0) {
4915                         wpa_s->p2p_auto_pd = 0;
4916                         wpa_msg_global(wpa_s, MSG_INFO,
4917                                        P2P_EVENT_PROV_DISC_FAILURE
4918                                        " p2p_dev_addr=" MACSTR " status=N/A",
4919                                        MAC2STR(wpa_s->pending_join_dev_addr));
4920                 }
4921                 return;
4922         }
4923
4924         if (wpa_s->p2p_auto_join) {
4925                 int join = wpas_p2p_peer_go(wpa_s,
4926                                             wpa_s->pending_join_dev_addr);
4927                 if (join < 0) {
4928                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4929                                    "running a GO -> use GO Negotiation");
4930                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4931                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4932                                        "reason=peer-not-running-GO");
4933                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4934                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4935                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4936                                          wpa_s->p2p_go_intent,
4937                                          wpa_s->p2p_connect_freq,
4938                                          wpa_s->p2p_go_vht_center_freq2,
4939                                          wpa_s->p2p_persistent_id,
4940                                          wpa_s->p2p_pd_before_go_neg,
4941                                          wpa_s->p2p_go_ht40,
4942                                          wpa_s->p2p_go_vht,
4943                                          wpa_s->p2p_go_max_oper_chwidth,
4944                                          wpa_s->p2p_go_he,
4945                                          NULL, 0);
4946                         return;
4947                 }
4948
4949                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4950                            "try to join the group", join ? "" :
4951                            " in older scan");
4952                 if (!join) {
4953                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4954                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4955                         wpa_s->p2p_fallback_to_go_neg = 1;
4956                 }
4957         }
4958
4959         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4960                                  wpa_s->pending_join_iface_addr);
4961         if (freq < 0 &&
4962             p2p_get_interface_addr(wpa_s->global->p2p,
4963                                    wpa_s->pending_join_dev_addr,
4964                                    iface_addr) == 0 &&
4965             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4966             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4967                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4968                            "address for join from " MACSTR " to " MACSTR
4969                            " based on newly discovered P2P peer entry",
4970                            MAC2STR(wpa_s->pending_join_iface_addr),
4971                            MAC2STR(iface_addr));
4972                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4973                           ETH_ALEN);
4974
4975                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4976                                          wpa_s->pending_join_iface_addr);
4977         }
4978         if (freq >= 0) {
4979                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4980                            "from P2P peer table: %d MHz", freq);
4981         }
4982         if (wpa_s->p2p_join_ssid_len) {
4983                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4984                            MACSTR " and SSID %s",
4985                            MAC2STR(wpa_s->pending_join_iface_addr),
4986                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4987                                         wpa_s->p2p_join_ssid_len));
4988                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4989                                   wpa_s->p2p_join_ssid,
4990                                   wpa_s->p2p_join_ssid_len);
4991         } else if (!bss) {
4992                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4993                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4994                 bss = wpa_bss_get_bssid_latest(wpa_s,
4995                                                wpa_s->pending_join_iface_addr);
4996         }
4997         if (bss) {
4998                 u8 dev_addr[ETH_ALEN];
4999
5000                 freq = bss->freq;
5001                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
5002                            "from BSS table: %d MHz (SSID %s)", freq,
5003                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
5004                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
5005                                        dev_addr) == 0 &&
5006                     os_memcmp(wpa_s->pending_join_dev_addr,
5007                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
5008                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
5009                               ETH_ALEN) != 0) {
5010                         wpa_printf(MSG_DEBUG,
5011                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
5012                                    MAC2STR(dev_addr),
5013                                    MAC2STR(wpa_s->pending_join_dev_addr));
5014                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
5015                                   ETH_ALEN);
5016                 }
5017         }
5018         if (freq > 0) {
5019                 u16 method;
5020
5021                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
5022                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
5023                                        P2P_EVENT_GROUP_FORMATION_FAILURE
5024                                        "reason=FREQ_CONFLICT");
5025                         wpas_notify_p2p_group_formation_failure(
5026                                 wpa_s, "FREQ_CONFLICT");
5027                         return;
5028                 }
5029
5030                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
5031                            "prior to joining an existing group (GO " MACSTR
5032                            " freq=%u MHz)",
5033                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
5034                 wpa_s->pending_pd_before_join = 1;
5035
5036                 switch (wpa_s->pending_join_wps_method) {
5037                 case WPS_PIN_DISPLAY:
5038                         method = WPS_CONFIG_KEYPAD;
5039                         break;
5040                 case WPS_PIN_KEYPAD:
5041                         method = WPS_CONFIG_DISPLAY;
5042                         break;
5043                 case WPS_PBC:
5044                         method = WPS_CONFIG_PUSHBUTTON;
5045                         break;
5046                 case WPS_P2PS:
5047                         method = WPS_CONFIG_P2PS;
5048                         break;
5049                 default:
5050                         method = 0;
5051                         break;
5052                 }
5053
5054                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
5055                                                wpa_s->pending_join_dev_addr) ==
5056                      method)) {
5057                         /*
5058                          * We have already performed provision discovery for
5059                          * joining the group. Proceed directly to join
5060                          * operation without duplicated provision discovery. */
5061                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
5062                                    "with " MACSTR " already done - proceed to "
5063                                    "join",
5064                                    MAC2STR(wpa_s->pending_join_dev_addr));
5065                         wpa_s->pending_pd_before_join = 0;
5066                         goto start;
5067                 }
5068
5069                 if (p2p_prov_disc_req(wpa_s->global->p2p,
5070                                       wpa_s->pending_join_dev_addr,
5071                                       NULL, method, 1,
5072                                       freq, wpa_s->user_initiated_pd) < 0) {
5073                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
5074                                    "Discovery Request before joining an "
5075                                    "existing group");
5076                         wpa_s->pending_pd_before_join = 0;
5077                         goto start;
5078                 }
5079                 return;
5080         }
5081
5082         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
5083         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5084         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5085         wpas_p2p_check_join_scan_limit(wpa_s);
5086         return;
5087
5088 start:
5089         /* Start join operation immediately */
5090         wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid,
5091                             wpa_s->p2p_join_ssid_len);
5092 }
5093
5094
5095 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
5096                                    const u8 *ssid, size_t ssid_len)
5097 {
5098         int ret;
5099         struct wpa_driver_scan_params params;
5100         struct wpabuf *wps_ie, *ies;
5101         size_t ielen;
5102         int freqs[2] = { 0, 0 };
5103         unsigned int bands;
5104
5105         os_memset(&params, 0, sizeof(params));
5106
5107         /* P2P Wildcard SSID */
5108         params.num_ssids = 1;
5109         if (ssid && ssid_len) {
5110                 params.ssids[0].ssid = ssid;
5111                 params.ssids[0].ssid_len = ssid_len;
5112                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
5113                 wpa_s->p2p_join_ssid_len = ssid_len;
5114         } else {
5115                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
5116                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
5117                 wpa_s->p2p_join_ssid_len = 0;
5118         }
5119
5120         wpa_s->wps->dev.p2p = 1;
5121         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
5122                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
5123                                         NULL);
5124         if (wps_ie == NULL) {
5125                 wpas_p2p_scan_res_join(wpa_s, NULL);
5126                 return;
5127         }
5128
5129         if (!freq) {
5130                 int oper_freq;
5131                 /*
5132                  * If freq is not provided, check the operating freq of the GO
5133                  * and use a single channel scan on if possible.
5134                  */
5135                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
5136                                               wpa_s->pending_join_iface_addr);
5137                 if (oper_freq > 0)
5138                         freq = oper_freq;
5139         }
5140         if (freq > 0) {
5141                 freqs[0] = freq;
5142                 params.freqs = freqs;
5143         }
5144
5145         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
5146         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
5147         if (ies == NULL) {
5148                 wpabuf_free(wps_ie);
5149                 wpas_p2p_scan_res_join(wpa_s, NULL);
5150                 return;
5151         }
5152         wpabuf_put_buf(ies, wps_ie);
5153         wpabuf_free(wps_ie);
5154
5155         bands = wpas_get_bands(wpa_s, freqs);
5156         p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
5157
5158         params.p2p_probe = 1;
5159         params.extra_ies = wpabuf_head(ies);
5160         params.extra_ies_len = wpabuf_len(ies);
5161
5162         if (wpa_s->clear_driver_scan_cache) {
5163                 wpa_printf(MSG_DEBUG,
5164                            "Request driver to clear scan cache due to local BSS flush");
5165                 params.only_new_results = 1;
5166         }
5167
5168         /*
5169          * Run a scan to update BSS table and start Provision Discovery once
5170          * the new scan results become available.
5171          */
5172         ret = wpa_drv_scan(wpa_s, &params);
5173         if (!ret) {
5174                 os_get_reltime(&wpa_s->scan_trigger_time);
5175                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
5176                 wpa_s->own_scan_requested = 1;
5177                 wpa_s->clear_driver_scan_cache = 0;
5178         }
5179
5180         wpabuf_free(ies);
5181
5182         if (ret) {
5183                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5184                            "try again later");
5185                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5186                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5187                 wpas_p2p_check_join_scan_limit(wpa_s);
5188         }
5189 }
5190
5191
5192 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5193 {
5194         struct wpa_supplicant *wpa_s = eloop_ctx;
5195         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5196 }
5197
5198
5199 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5200                          const u8 *dev_addr, enum p2p_wps_method wps_method,
5201                          int auto_join, int op_freq,
5202                          const u8 *ssid, size_t ssid_len)
5203 {
5204         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5205                    MACSTR " dev " MACSTR " op_freq=%d)%s",
5206                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5207                    auto_join ? " (auto_join)" : "");
5208         if (ssid && ssid_len) {
5209                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5210                            wpa_ssid_txt(ssid, ssid_len));
5211         }
5212
5213         wpa_s->p2p_auto_pd = 0;
5214         wpa_s->p2p_auto_join = !!auto_join;
5215         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5216         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5217         wpa_s->pending_join_wps_method = wps_method;
5218
5219         /* Make sure we are not running find during connection establishment */
5220         wpas_p2p_stop_find(wpa_s);
5221
5222         wpa_s->p2p_join_scan_count = 0;
5223         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5224         return 0;
5225 }
5226
5227
5228 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5229                                const u8 *ssid, size_t ssid_len)
5230 {
5231         struct wpa_supplicant *group;
5232         struct p2p_go_neg_results res;
5233         struct wpa_bss *bss;
5234
5235         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5236         if (group == NULL)
5237                 return -1;
5238         if (group != wpa_s) {
5239                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5240                           sizeof(group->p2p_pin));
5241                 group->p2p_wps_method = wpa_s->p2p_wps_method;
5242         }
5243
5244         /*
5245          * Need to mark the current interface for p2p_group_formation
5246          * when a separate group interface is not used. This is needed
5247          * to allow p2p_cancel stop a pending p2p_connect-join.
5248          * wpas_p2p_init_group_interface() addresses this for the case
5249          * where a separate group interface is used.
5250          */
5251         if (group == wpa_s->parent)
5252                 wpa_s->global->p2p_group_formation = group;
5253
5254         group->p2p_in_provisioning = 1;
5255         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5256
5257         os_memset(&res, 0, sizeof(res));
5258         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5259         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5260                   ETH_ALEN);
5261         res.wps_method = wpa_s->pending_join_wps_method;
5262         if (freq && ssid && ssid_len) {
5263                 res.freq = freq;
5264                 res.ssid_len = ssid_len;
5265                 os_memcpy(res.ssid, ssid, ssid_len);
5266         } else {
5267                 if (ssid && ssid_len) {
5268                         bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
5269                                           ssid, ssid_len);
5270                 } else {
5271                         bss = wpa_bss_get_bssid_latest(
5272                                 wpa_s, wpa_s->pending_join_iface_addr);
5273                 }
5274                 if (bss) {
5275                         res.freq = bss->freq;
5276                         res.ssid_len = bss->ssid_len;
5277                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5278                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5279                                    bss->freq,
5280                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
5281                 } else if (ssid && ssid_len) {
5282                         res.ssid_len = ssid_len;
5283                         os_memcpy(res.ssid, ssid, ssid_len);
5284                         wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)",
5285                                    wpa_ssid_txt(ssid, ssid_len));
5286                 }
5287         }
5288
5289         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5290                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5291                            "starting client");
5292                 wpa_drv_cancel_remain_on_channel(wpa_s);
5293                 wpa_s->off_channel_freq = 0;
5294                 wpa_s->roc_waiting_drv_freq = 0;
5295         }
5296         wpas_start_wps_enrollee(group, &res);
5297
5298         /*
5299          * Allow a longer timeout for join-a-running-group than normal 15
5300          * second group formation timeout since the GO may not have authorized
5301          * our connection yet.
5302          */
5303         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5304         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5305                                wpa_s, NULL);
5306
5307         return 0;
5308 }
5309
5310
5311 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5312                                 int *force_freq, int *pref_freq, int go,
5313                                 unsigned int *pref_freq_list,
5314                                 unsigned int *num_pref_freq)
5315 {
5316         struct wpa_used_freq_data *freqs;
5317         int res, best_freq, num_unused;
5318         unsigned int freq_in_use = 0, num, i, max_pref_freq;
5319
5320         max_pref_freq = *num_pref_freq;
5321         *num_pref_freq = 0;
5322
5323         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5324                           sizeof(struct wpa_used_freq_data));
5325         if (!freqs)
5326                 return -1;
5327
5328         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5329                                         wpa_s->num_multichan_concurrent);
5330
5331         /*
5332          * It is possible that the total number of used frequencies is bigger
5333          * than the number of frequencies used for P2P, so get the system wide
5334          * number of unused frequencies.
5335          */
5336         num_unused = wpas_p2p_num_unused_channels(wpa_s);
5337
5338         wpa_printf(MSG_DEBUG,
5339                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5340                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
5341
5342         if (freq > 0) {
5343                 int ret;
5344                 if (go)
5345                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5346                 else
5347                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5348                 if (!ret) {
5349                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5350                             ieee80211_is_dfs(freq, wpa_s->hw.modes,
5351                                              wpa_s->hw.num_modes)) {
5352                                 /*
5353                                  * If freq is a DFS channel and DFS is offloaded
5354                                  * to the driver, allow P2P GO to use it.
5355                                  */
5356                                 wpa_printf(MSG_DEBUG,
5357                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5358                                            freq);
5359                         } else {
5360                                 wpa_printf(MSG_DEBUG,
5361                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5362                                            freq);
5363                                 res = -3;
5364                                 goto exit_free;
5365                         }
5366                 }
5367
5368                 for (i = 0; i < num; i++) {
5369                         if (freqs[i].freq == freq)
5370                                 freq_in_use = 1;
5371                 }
5372
5373                 if (num_unused <= 0 && !freq_in_use) {
5374                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5375                                    freq);
5376                         res = -2;
5377                         goto exit_free;
5378                 }
5379                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5380                            "requested channel (%u MHz)", freq);
5381                 *force_freq = freq;
5382                 goto exit_ok;
5383         }
5384
5385         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5386
5387         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5388                 enum wpa_driver_if_type iface_type;
5389
5390                 if (go)
5391                         iface_type = WPA_IF_P2P_GO;
5392                 else
5393                         iface_type = WPA_IF_P2P_CLIENT;
5394
5395                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5396                            best_freq, go);
5397
5398                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5399                                                  &max_pref_freq,
5400                                                  pref_freq_list);
5401                 if (!res && max_pref_freq > 0) {
5402                         *num_pref_freq = max_pref_freq;
5403                         i = 0;
5404                         while (i < *num_pref_freq &&
5405                                (!p2p_supported_freq(wpa_s->global->p2p,
5406                                                     pref_freq_list[i]) ||
5407                                 wpas_p2p_disallowed_freq(wpa_s->global,
5408                                                          pref_freq_list[i]))) {
5409                                 wpa_printf(MSG_DEBUG,
5410                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5411                                            i, pref_freq_list[i]);
5412                                 i++;
5413                         }
5414                         if (i != *num_pref_freq) {
5415                                 best_freq = pref_freq_list[i];
5416                                 wpa_printf(MSG_DEBUG,
5417                                            "P2P: Using preferred_freq_list[%d]=%d",
5418                                            i, best_freq);
5419                         } else {
5420                                 wpa_printf(MSG_DEBUG,
5421                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5422                                 *num_pref_freq = 0;
5423                         }
5424                 } else {
5425                         wpa_printf(MSG_DEBUG,
5426                                    "P2P: No preferred frequency list available");
5427                 }
5428         }
5429
5430         /* We have a candidate frequency to use */
5431         if (best_freq > 0) {
5432                 if (*pref_freq == 0 && num_unused > 0) {
5433                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5434                                    best_freq);
5435                         *pref_freq = best_freq;
5436                 } else {
5437                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5438                                    best_freq);
5439                         *force_freq = best_freq;
5440                 }
5441         } else if (num_unused > 0) {
5442                 wpa_printf(MSG_DEBUG,
5443                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5444                 *force_freq = 0;
5445         } else {
5446                 wpa_printf(MSG_DEBUG,
5447                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5448                 res = -2;
5449                 goto exit_free;
5450         }
5451
5452 exit_ok:
5453         res = 0;
5454 exit_free:
5455         os_free(freqs);
5456         return res;
5457 }
5458
5459
5460 /**
5461  * wpas_p2p_connect - Request P2P Group Formation to be started
5462  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5463  * @peer_addr: Address of the peer P2P Device
5464  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5465  * @persistent_group: Whether to create a persistent group
5466  * @auto_join: Whether to select join vs. GO Negotiation automatically
5467  * @join: Whether to join an existing group (as a client) instead of starting
5468  *      Group Owner negotiation; @peer_addr is BSSID in that case
5469  * @auth: Whether to only authorize the connection instead of doing that and
5470  *      initiating Group Owner negotiation
5471  * @go_intent: GO Intent or -1 to use default
5472  * @freq: Frequency for the group or 0 for auto-selection
5473  * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5474  * @persistent_id: Persistent group credentials to use for forcing GO
5475  *      parameters or -1 to generate new values (SSID/passphrase)
5476  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5477  *      interoperability workaround when initiating group formation
5478  * @ht40: Start GO with 40 MHz channel width
5479  * @vht:  Start GO with VHT support
5480  * @vht_chwidth: Channel width supported by GO operating with VHT support
5481  *      (CHANWIDTH_*).
5482  * @group_ssid: Specific Group SSID for join or %NULL if not set
5483  * @group_ssid_len: Length of @group_ssid in octets
5484  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5485  *      failure, -2 on failure due to channel not currently available,
5486  *      -3 if forced channel is not supported
5487  */
5488 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5489                      const char *pin, enum p2p_wps_method wps_method,
5490                      int persistent_group, int auto_join, int join, int auth,
5491                      int go_intent, int freq, unsigned int vht_center_freq2,
5492                      int persistent_id, int pd, int ht40, int vht,
5493                      unsigned int vht_chwidth, int he, const u8 *group_ssid,
5494                      size_t group_ssid_len)
5495 {
5496         int force_freq = 0, pref_freq = 0;
5497         int ret = 0, res;
5498         enum wpa_driver_if_type iftype;
5499         const u8 *if_addr;
5500         struct wpa_ssid *ssid = NULL;
5501         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5502
5503         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5504                 return -1;
5505
5506         if (persistent_id >= 0) {
5507                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5508                 if (ssid == NULL || ssid->disabled != 2 ||
5509                     ssid->mode != WPAS_MODE_P2P_GO)
5510                         return -1;
5511         }
5512
5513         os_free(wpa_s->global->add_psk);
5514         wpa_s->global->add_psk = NULL;
5515
5516         wpa_s->global->p2p_fail_on_wps_complete = 0;
5517         wpa_s->global->pending_p2ps_group = 0;
5518         wpa_s->global->pending_p2ps_group_freq = 0;
5519         wpa_s->p2ps_method_config_any = 0;
5520
5521         if (go_intent < 0)
5522                 go_intent = wpa_s->conf->p2p_go_intent;
5523
5524         if (!auth)
5525                 wpa_s->p2p_long_listen = 0;
5526
5527         wpa_s->p2p_wps_method = wps_method;
5528         wpa_s->p2p_persistent_group = !!persistent_group;
5529         wpa_s->p2p_persistent_id = persistent_id;
5530         wpa_s->p2p_go_intent = go_intent;
5531         wpa_s->p2p_connect_freq = freq;
5532         wpa_s->p2p_fallback_to_go_neg = 0;
5533         wpa_s->p2p_pd_before_go_neg = !!pd;
5534         wpa_s->p2p_go_ht40 = !!ht40;
5535         wpa_s->p2p_go_vht = !!vht;
5536         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5537         wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5538         wpa_s->p2p_go_he = !!he;
5539
5540         if (pin)
5541                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5542         else if (wps_method == WPS_PIN_DISPLAY) {
5543                 if (wps_generate_pin((unsigned int *) &ret) < 0)
5544                         return -1;
5545                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5546                                   "%08d", ret);
5547                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5548                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5549                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5550                            wpa_s->p2p_pin);
5551         } else if (wps_method == WPS_P2PS) {
5552                 /* Force the P2Ps default PIN to be used */
5553                 os_strlcpy(wpa_s->p2p_pin, "12345670", sizeof(wpa_s->p2p_pin));
5554         } else
5555                 wpa_s->p2p_pin[0] = '\0';
5556
5557         if (join || auto_join) {
5558                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5559                 if (auth) {
5560                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5561                                    "connect a running group from " MACSTR,
5562                                    MAC2STR(peer_addr));
5563                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5564                         return ret;
5565                 }
5566                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5567                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5568                                            iface_addr) < 0) {
5569                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5570                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5571                                          dev_addr);
5572                 }
5573                 if (auto_join) {
5574                         os_get_reltime(&wpa_s->p2p_auto_started);
5575                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5576                                    "%ld.%06ld",
5577                                    wpa_s->p2p_auto_started.sec,
5578                                    wpa_s->p2p_auto_started.usec);
5579                 }
5580                 wpa_s->user_initiated_pd = 1;
5581                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5582                                   auto_join, freq,
5583                                   group_ssid, group_ssid_len) < 0)
5584                         return -1;
5585                 return ret;
5586         }
5587
5588         size = P2P_MAX_PREF_CHANNELS;
5589         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5590                                    go_intent == 15, pref_freq_list, &size);
5591         if (res)
5592                 return res;
5593         wpas_p2p_set_own_freq_preference(wpa_s,
5594                                          force_freq ? force_freq : pref_freq);
5595
5596         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5597
5598         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5599
5600         if (wpa_s->create_p2p_iface) {
5601                 /* Prepare to add a new interface for the group */
5602                 iftype = WPA_IF_P2P_GROUP;
5603                 if (go_intent == 15)
5604                         iftype = WPA_IF_P2P_GO;
5605                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5606                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5607                                    "interface for the group");
5608                         return -1;
5609                 }
5610
5611                 if_addr = wpa_s->pending_interface_addr;
5612         } else {
5613                 if (wpa_s->p2p_mgmt)
5614                         if_addr = wpa_s->parent->own_addr;
5615                 else
5616                         if_addr = wpa_s->own_addr;
5617                 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5618         }
5619
5620         if (auth) {
5621                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5622                                          go_intent, if_addr,
5623                                          force_freq, persistent_group, ssid,
5624                                          pref_freq) < 0)
5625                         return -1;
5626                 return ret;
5627         }
5628
5629         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5630                                   go_intent, if_addr, force_freq,
5631                                   persistent_group, ssid, pref_freq) < 0) {
5632                 if (wpa_s->create_p2p_iface)
5633                         wpas_p2p_remove_pending_group_interface(wpa_s);
5634                 return -1;
5635         }
5636         return ret;
5637 }
5638
5639
5640 /**
5641  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5642  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5643  * @freq: Frequency of the channel in MHz
5644  * @duration: Duration of the stay on the channel in milliseconds
5645  *
5646  * This callback is called when the driver indicates that it has started the
5647  * requested remain-on-channel duration.
5648  */
5649 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5650                                    unsigned int freq, unsigned int duration)
5651 {
5652         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5653                 return;
5654         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)",
5655                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5656                    wpa_s->roc_waiting_drv_freq, freq, duration);
5657         if (wpa_s->off_channel_freq &&
5658             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5659                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5660                               wpa_s->pending_listen_duration);
5661                 wpa_s->pending_listen_freq = 0;
5662         } else {
5663                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5664                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5665                            freq, duration);
5666         }
5667 }
5668
5669
5670 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5671 {
5672         /* Limit maximum Listen state time based on driver limitation. */
5673         if (timeout > wpa_s->max_remain_on_chan)
5674                 timeout = wpa_s->max_remain_on_chan;
5675
5676         return p2p_listen(wpa_s->global->p2p, timeout);
5677 }
5678
5679
5680 /**
5681  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5682  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5683  * @freq: Frequency of the channel in MHz
5684  *
5685  * This callback is called when the driver indicates that a remain-on-channel
5686  * operation has been completed, i.e., the duration on the requested channel
5687  * has timed out.
5688  */
5689 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5690                                           unsigned int freq)
5691 {
5692         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5693                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5694                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5695         wpas_p2p_listen_work_done(wpa_s);
5696         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5697                 return;
5698         if (wpa_s->p2p_long_listen > 0)
5699                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5700         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5701                 return; /* P2P module started a new operation */
5702         if (offchannel_pending_action_tx(wpa_s))
5703                 return;
5704         if (wpa_s->p2p_long_listen > 0) {
5705                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5706                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5707         } else {
5708                 /*
5709                  * When listen duration is over, stop listen & update p2p_state
5710                  * to IDLE.
5711                  */
5712                 p2p_stop_listen(wpa_s->global->p2p);
5713         }
5714 }
5715
5716
5717 /**
5718  * wpas_p2p_group_remove - Remove a P2P group
5719  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5720  * @ifname: Network interface name of the group interface or "*" to remove all
5721  *      groups
5722  * Returns: 0 on success, -1 on failure
5723  *
5724  * This function is used to remove a P2P group. This can be used to disconnect
5725  * from a group in which the local end is a P2P Client or to end a P2P Group in
5726  * case the local end is the Group Owner. If a virtual network interface was
5727  * created for this group, that interface will be removed. Otherwise, only the
5728  * configured P2P group network will be removed from the interface.
5729  */
5730 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5731 {
5732         struct wpa_global *global = wpa_s->global;
5733         struct wpa_supplicant *calling_wpa_s = wpa_s;
5734
5735         if (os_strcmp(ifname, "*") == 0) {
5736                 struct wpa_supplicant *prev;
5737                 wpa_s = global->ifaces;
5738                 while (wpa_s) {
5739                         prev = wpa_s;
5740                         wpa_s = wpa_s->next;
5741                         if (prev->p2p_group_interface !=
5742                             NOT_P2P_GROUP_INTERFACE ||
5743                             (prev->current_ssid &&
5744                              prev->current_ssid->p2p_group))
5745                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5746                 }
5747                 return 0;
5748         }
5749
5750         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5751                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5752                         break;
5753         }
5754
5755         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5756 }
5757
5758
5759 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5760 {
5761         unsigned int r;
5762
5763         if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5764                 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5765                 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5766                 int res;
5767
5768                 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5769                                                  &size, pref_freq_list);
5770                 if (!res && size > 0) {
5771                         i = 0;
5772                         while (i < size &&
5773                                (!p2p_supported_freq(wpa_s->global->p2p,
5774                                                     pref_freq_list[i]) ||
5775                                 wpas_p2p_disallowed_freq(wpa_s->global,
5776                                                          pref_freq_list[i]))) {
5777                                 wpa_printf(MSG_DEBUG,
5778                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5779                                            i, pref_freq_list[i]);
5780                                 i++;
5781                         }
5782                         if (i != size) {
5783                                 freq = pref_freq_list[i];
5784                                 wpa_printf(MSG_DEBUG,
5785                                            "P2P: Using preferred_freq_list[%d]=%d",
5786                                            i, freq);
5787                         } else {
5788                                 wpa_printf(MSG_DEBUG,
5789                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5790                         }
5791                 } else {
5792                         wpa_printf(MSG_DEBUG,
5793                                    "P2P: No preferred frequency list available");
5794                 }
5795         }
5796
5797         if (freq == 2) {
5798                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5799                            "band");
5800                 if (wpa_s->best_24_freq > 0 &&
5801                     p2p_supported_freq_go(wpa_s->global->p2p,
5802                                           wpa_s->best_24_freq)) {
5803                         freq = wpa_s->best_24_freq;
5804                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5805                                    "channel: %d MHz", freq);
5806                 } else {
5807                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5808                                 return -1;
5809                         freq = 2412 + (r % 3) * 25;
5810                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5811                                    "channel: %d MHz", freq);
5812                 }
5813         }
5814
5815         if (freq == 5) {
5816                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5817                            "band");
5818                 if (wpa_s->best_5_freq > 0 &&
5819                     p2p_supported_freq_go(wpa_s->global->p2p,
5820                                        wpa_s->best_5_freq)) {
5821                         freq = wpa_s->best_5_freq;
5822                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5823                                    "channel: %d MHz", freq);
5824                 } else {
5825                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5826                                 return -1;
5827                         freq = 5180 + (r % 4) * 20;
5828                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5829                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5830                                            "5 GHz channel for P2P group");
5831                                 return -1;
5832                         }
5833                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5834                                    "channel: %d MHz", freq);
5835                 }
5836         }
5837
5838         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5839                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5840                     ieee80211_is_dfs(freq, wpa_s->hw.modes,
5841                                      wpa_s->hw.num_modes)) {
5842                         /*
5843                          * If freq is a DFS channel and DFS is offloaded to the
5844                          * driver, allow P2P GO to use it.
5845                          */
5846                         wpa_printf(MSG_DEBUG, "P2P: "
5847                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5848                                    __func__, freq);
5849                         return freq;
5850                 }
5851                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5852                            "(%u MHz) is not supported for P2P uses",
5853                            freq);
5854                 return -1;
5855         }
5856
5857         return freq;
5858 }
5859
5860
5861 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5862                                       const struct p2p_channels *channels,
5863                                       int freq)
5864 {
5865         if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5866             p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5867             freq_included(wpa_s, channels, freq))
5868                 return 1;
5869         return 0;
5870 }
5871
5872
5873 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5874                                             struct p2p_go_neg_results *params,
5875                                             const struct p2p_channels *channels)
5876 {
5877         unsigned int i, r;
5878
5879         /* try all channels in operating class 115 */
5880         for (i = 0; i < 4; i++) {
5881                 params->freq = 5180 + i * 20;
5882                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5883                     freq_included(wpa_s, channels, params->freq) &&
5884                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5885                         goto out;
5886         }
5887
5888         /* try all channels in operating class 124 */
5889         for (i = 0; i < 4; i++) {
5890                 params->freq = 5745 + i * 20;
5891                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5892                     freq_included(wpa_s, channels, params->freq) &&
5893                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5894                         goto out;
5895         }
5896
5897         /* try social channel class 180 channel 2 */
5898         params->freq = 58320 + 1 * 2160;
5899         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5900             freq_included(wpa_s, channels, params->freq) &&
5901             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5902                 goto out;
5903
5904         /* try all channels in reg. class 180 */
5905         for (i = 0; i < 4; i++) {
5906                 params->freq = 58320 + i * 2160;
5907                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5908                     freq_included(wpa_s, channels, params->freq) &&
5909                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5910                         goto out;
5911         }
5912
5913         /* try some random selection of the social channels */
5914         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5915                 return;
5916
5917         for (i = 0; i < 3; i++) {
5918                 params->freq = 2412 + ((r + i) % 3) * 25;
5919                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5920                         goto out;
5921         }
5922
5923         /* try all other channels in operating class 81 */
5924         for (i = 0; i < 11; i++) {
5925                 params->freq = 2412 + i * 5;
5926
5927                 /* skip social channels; covered in the previous loop */
5928                 if (params->freq == 2412 ||
5929                     params->freq == 2437 ||
5930                     params->freq == 2462)
5931                         continue;
5932
5933                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5934                         goto out;
5935         }
5936
5937         params->freq = 0;
5938         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5939         return;
5940 out:
5941         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5942                    params->freq);
5943 }
5944
5945
5946 static int wpas_same_band(int freq1, int freq2)
5947 {
5948         enum hostapd_hw_mode mode1, mode2;
5949         u8 chan1, chan2;
5950
5951         mode1 = ieee80211_freq_to_chan(freq1, &chan1);
5952         mode2 = ieee80211_freq_to_chan(freq2, &chan2);
5953         if (mode1 == NUM_HOSTAPD_MODES)
5954                 return 0;
5955         return mode1 == mode2;
5956 }
5957
5958
5959 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5960                                    struct p2p_go_neg_results *params,
5961                                    int freq, int vht_center_freq2, int ht40,
5962                                    int vht, int max_oper_chwidth, int he,
5963                                    const struct p2p_channels *channels)
5964 {
5965         struct wpa_used_freq_data *freqs;
5966         unsigned int cand;
5967         unsigned int num, i;
5968         int ignore_no_freqs = 0;
5969         int unused_channels = wpas_p2p_num_unused_channels(wpa_s) > 0;
5970
5971         os_memset(params, 0, sizeof(*params));
5972         params->role_go = 1;
5973         params->ht40 = ht40;
5974         params->vht = vht;
5975         params->he = he;
5976         params->max_oper_chwidth = max_oper_chwidth;
5977         params->vht_center_freq2 = vht_center_freq2;
5978
5979         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5980                           sizeof(struct wpa_used_freq_data));
5981         if (!freqs)
5982                 return -1;
5983
5984         num = get_shared_radio_freqs_data(wpa_s, freqs,
5985                                           wpa_s->num_multichan_concurrent);
5986
5987         if (wpa_s->current_ssid &&
5988             wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5989             wpa_s->wpa_state == WPA_COMPLETED) {
5990                 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5991                            __func__);
5992
5993                 /*
5994                  * If the frequency selection is done for an active P2P GO that
5995                  * is not sharing a frequency, allow to select a new frequency
5996                  * even if there are no unused frequencies as we are about to
5997                  * move the P2P GO so its frequency can be re-used.
5998                  */
5999                 for (i = 0; i < num; i++) {
6000                         if (freqs[i].freq == wpa_s->current_ssid->frequency &&
6001                             freqs[i].flags == 0) {
6002                                 ignore_no_freqs = 1;
6003                                 break;
6004                         }
6005                 }
6006         }
6007
6008         /* try using the forced freq */
6009         if (freq) {
6010                 if (wpas_p2p_disallowed_freq(wpa_s->global, freq) ||
6011                     !freq_included(wpa_s, channels, freq)) {
6012                         wpa_printf(MSG_DEBUG,
6013                                    "P2P: Forced GO freq %d MHz disallowed",
6014                                    freq);
6015                         goto fail;
6016                 }
6017                 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
6018                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
6019                             ieee80211_is_dfs(freq, wpa_s->hw.modes,
6020                                              wpa_s->hw.num_modes)) {
6021                                 /*
6022                                  * If freq is a DFS channel and DFS is offloaded
6023                                  * to the driver, allow P2P GO to use it.
6024                                  */
6025                                 wpa_printf(MSG_DEBUG,
6026                                            "P2P: %s: The forced channel for GO (%u MHz) requires DFS and DFS is offloaded",
6027                                            __func__, freq);
6028                         } else {
6029                                 wpa_printf(MSG_DEBUG,
6030                                            "P2P: The forced channel for GO (%u MHz) is not supported for P2P uses",
6031                                            freq);
6032                                 goto fail;
6033                         }
6034                 }
6035
6036                 for (i = 0; i < num; i++) {
6037                         if (freqs[i].freq == freq) {
6038                                 wpa_printf(MSG_DEBUG,
6039                                            "P2P: forced freq (%d MHz) is also shared",
6040                                            freq);
6041                                 params->freq = freq;
6042                                 goto success;
6043                         }
6044                 }
6045
6046                 if (!ignore_no_freqs && !unused_channels) {
6047                         wpa_printf(MSG_DEBUG,
6048                                    "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
6049                                    freq);
6050                         goto fail;
6051                 }
6052
6053                 wpa_printf(MSG_DEBUG,
6054                            "P2P: force GO freq (%d MHz) on a free channel",
6055                            freq);
6056                 params->freq = freq;
6057                 goto success;
6058         }
6059
6060         /* consider using one of the shared frequencies */
6061         if (num &&
6062             (!wpa_s->conf->p2p_ignore_shared_freq || !unused_channels)) {
6063                 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
6064                 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6065                         wpa_printf(MSG_DEBUG,
6066                                    "P2P: Use shared freq (%d MHz) for GO",
6067                                    cand);
6068                         params->freq = cand;
6069                         goto success;
6070                 }
6071
6072                 /* try using one of the shared freqs */
6073                 for (i = 0; i < num; i++) {
6074                         if (wpas_p2p_supported_freq_go(wpa_s, channels,
6075                                                        freqs[i].freq)) {
6076                                 wpa_printf(MSG_DEBUG,
6077                                            "P2P: Use shared freq (%d MHz) for GO",
6078                                            freqs[i].freq);
6079                                 params->freq = freqs[i].freq;
6080                                 goto success;
6081                         }
6082                 }
6083         }
6084
6085         if (!ignore_no_freqs && !unused_channels) {
6086                 wpa_printf(MSG_DEBUG,
6087                            "P2P: Cannot force GO on any of the channels we are already using");
6088                 goto fail;
6089         }
6090
6091         /* try using the setting from the configuration file */
6092         if (wpa_s->conf->p2p_oper_reg_class == 81 &&
6093             wpa_s->conf->p2p_oper_channel >= 1 &&
6094             wpa_s->conf->p2p_oper_channel <= 11 &&
6095             wpas_p2p_supported_freq_go(
6096                     wpa_s, channels,
6097                     2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
6098                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
6099                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
6100                            "frequency %d MHz", params->freq);
6101                 goto success;
6102         }
6103
6104         if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
6105              wpa_s->conf->p2p_oper_reg_class == 116 ||
6106              wpa_s->conf->p2p_oper_reg_class == 117 ||
6107              wpa_s->conf->p2p_oper_reg_class == 124 ||
6108              wpa_s->conf->p2p_oper_reg_class == 125 ||
6109              wpa_s->conf->p2p_oper_reg_class == 126 ||
6110              wpa_s->conf->p2p_oper_reg_class == 127) &&
6111             wpas_p2p_supported_freq_go(wpa_s, channels,
6112                                        5000 +
6113                                        5 * wpa_s->conf->p2p_oper_channel)) {
6114                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
6115                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
6116                            "frequency %d MHz", params->freq);
6117                 goto success;
6118         }
6119
6120         /* Try using best channels */
6121         if (wpa_s->conf->p2p_oper_channel == 0 &&
6122             wpa_s->best_overall_freq > 0 &&
6123             wpas_p2p_supported_freq_go(wpa_s, channels,
6124                                        wpa_s->best_overall_freq)) {
6125                 params->freq = wpa_s->best_overall_freq;
6126                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
6127                            "channel %d MHz", params->freq);
6128                 goto success;
6129         }
6130
6131         if (wpa_s->conf->p2p_oper_channel == 0 &&
6132             wpa_s->best_24_freq > 0 &&
6133             wpas_p2p_supported_freq_go(wpa_s, channels,
6134                                        wpa_s->best_24_freq)) {
6135                 params->freq = wpa_s->best_24_freq;
6136                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
6137                            "channel %d MHz", params->freq);
6138                 goto success;
6139         }
6140
6141         if (wpa_s->conf->p2p_oper_channel == 0 &&
6142             wpa_s->best_5_freq > 0 &&
6143             wpas_p2p_supported_freq_go(wpa_s, channels,
6144                                        wpa_s->best_5_freq)) {
6145                 params->freq = wpa_s->best_5_freq;
6146                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
6147                            "channel %d MHz", params->freq);
6148                 goto success;
6149         }
6150
6151         /* try using preferred channels */
6152         cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
6153         if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6154                 params->freq = cand;
6155                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
6156                            "channels", params->freq);
6157                 goto success;
6158         }
6159
6160         /* Try using a channel that allows VHT to be used with 80 MHz */
6161         if (wpa_s->hw.modes && wpa_s->p2p_group_common_freqs) {
6162                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
6163                         enum hostapd_hw_mode mode;
6164                         struct hostapd_hw_modes *hwmode;
6165                         u8 chan;
6166
6167                         cand = wpa_s->p2p_group_common_freqs[i];
6168                         mode = ieee80211_freq_to_chan(cand, &chan);
6169                         hwmode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
6170                                           mode);
6171                         if (!hwmode ||
6172                             wpas_p2p_verify_channel(wpa_s, hwmode, chan,
6173                                                     BW80) != ALLOWED)
6174                                 continue;
6175                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6176                                 params->freq = cand;
6177                                 wpa_printf(MSG_DEBUG,
6178                                            "P2P: Use freq %d MHz common with the peer and allowing VHT80",
6179                                            params->freq);
6180                                 goto success;
6181                         }
6182                 }
6183         }
6184
6185         /* Try using a channel that allows HT to be used with 40 MHz on the same
6186          * band so that CSA can be used */
6187         if (wpa_s->current_ssid && wpa_s->hw.modes &&
6188             wpa_s->p2p_group_common_freqs) {
6189                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
6190                         enum hostapd_hw_mode mode;
6191                         struct hostapd_hw_modes *hwmode;
6192                         u8 chan;
6193
6194                         cand = wpa_s->p2p_group_common_freqs[i];
6195                         mode = ieee80211_freq_to_chan(cand, &chan);
6196                         hwmode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
6197                                           mode);
6198                         if (!wpas_same_band(wpa_s->current_ssid->frequency,
6199                                             cand) ||
6200                             !hwmode ||
6201                             (wpas_p2p_verify_channel(wpa_s, hwmode, chan,
6202                                                      BW40MINUS) != ALLOWED &&
6203                              wpas_p2p_verify_channel(wpa_s, hwmode, chan,
6204                                                      BW40PLUS) != ALLOWED))
6205                                 continue;
6206                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6207                                 params->freq = cand;
6208                                 wpa_printf(MSG_DEBUG,
6209                                            "P2P: Use freq %d MHz common with the peer, allowing HT40, and maintaining same band",
6210                                            params->freq);
6211                                 goto success;
6212                         }
6213                 }
6214         }
6215
6216         /* Try using one of the group common freqs on the same band so that CSA
6217          * can be used */
6218         if (wpa_s->current_ssid && wpa_s->p2p_group_common_freqs) {
6219                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
6220                         cand = wpa_s->p2p_group_common_freqs[i];
6221                         if (!wpas_same_band(wpa_s->current_ssid->frequency,
6222                                             cand))
6223                                 continue;
6224                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6225                                 params->freq = cand;
6226                                 wpa_printf(MSG_DEBUG,
6227                                            "P2P: Use freq %d MHz common with the peer and maintaining same band",
6228                                            params->freq);
6229                                 goto success;
6230                         }
6231                 }
6232         }
6233
6234         /* Try using one of the group common freqs */
6235         if (wpa_s->p2p_group_common_freqs) {
6236                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
6237                         cand = wpa_s->p2p_group_common_freqs[i];
6238                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6239                                 params->freq = cand;
6240                                 wpa_printf(MSG_DEBUG,
6241                                            "P2P: Use freq %d MHz common with the peer",
6242                                            params->freq);
6243                                 goto success;
6244                         }
6245                 }
6246         }
6247
6248         /* no preference, select some channel */
6249         wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
6250
6251         if (params->freq == 0) {
6252                 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
6253                 goto fail;
6254         }
6255
6256 success:
6257         os_free(freqs);
6258         return 0;
6259 fail:
6260         os_free(freqs);
6261         return -1;
6262 }
6263
6264
6265 static struct wpa_supplicant *
6266 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
6267                          int go)
6268 {
6269         struct wpa_supplicant *group_wpa_s;
6270
6271         if (!wpas_p2p_create_iface(wpa_s)) {
6272                 if (wpa_s->p2p_mgmt) {
6273                         /*
6274                          * We may be called on the p2p_dev interface which
6275                          * cannot be used for group operations, so always use
6276                          * the primary interface.
6277                          */
6278                         wpa_s->parent->p2pdev = wpa_s;
6279                         wpa_s = wpa_s->parent;
6280                 }
6281                 wpa_dbg(wpa_s, MSG_DEBUG,
6282                         "P2P: Use primary interface for group operations");
6283                 wpa_s->p2p_first_connection_timeout = 0;
6284                 if (wpa_s != wpa_s->p2pdev)
6285                         wpas_p2p_clone_config(wpa_s, wpa_s->p2pdev);
6286                 return wpa_s;
6287         }
6288
6289         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
6290                                          WPA_IF_P2P_CLIENT) < 0) {
6291                 wpa_msg_global(wpa_s, MSG_ERROR,
6292                                "P2P: Failed to add group interface");
6293                 return NULL;
6294         }
6295         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
6296         if (group_wpa_s == NULL) {
6297                 wpa_msg_global(wpa_s, MSG_ERROR,
6298                                "P2P: Failed to initialize group interface");
6299                 wpas_p2p_remove_pending_group_interface(wpa_s);
6300                 return NULL;
6301         }
6302
6303         if (go && wpa_s->p2p_go_do_acs) {
6304                 group_wpa_s->p2p_go_do_acs = wpa_s->p2p_go_do_acs;
6305                 group_wpa_s->p2p_go_acs_band = wpa_s->p2p_go_acs_band;
6306                 wpa_s->p2p_go_do_acs = 0;
6307         }
6308
6309         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
6310                 group_wpa_s->ifname);
6311         group_wpa_s->p2p_first_connection_timeout = 0;
6312         return group_wpa_s;
6313 }
6314
6315
6316 /**
6317  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
6318  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
6319  * @persistent_group: Whether to create a persistent group
6320  * @freq: Frequency for the group or 0 to indicate no hardcoding
6321  * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80
6322  * @ht40: Start GO with 40 MHz channel width
6323  * @vht:  Start GO with VHT support
6324  * @vht_chwidth: channel bandwidth for GO operating with VHT support
6325  * Returns: 0 on success, -1 on failure
6326  *
6327  * This function creates a new P2P group with the local end as the Group Owner,
6328  * i.e., without using Group Owner Negotiation.
6329  */
6330 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
6331                        int freq, int vht_center_freq2, int ht40, int vht,
6332                        int max_oper_chwidth, int he)
6333 {
6334         struct p2p_go_neg_results params;
6335
6336         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6337                 return -1;
6338
6339         os_free(wpa_s->global->add_psk);
6340         wpa_s->global->add_psk = NULL;
6341
6342         /* Make sure we are not running find during connection establishment */
6343         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6344         wpas_p2p_stop_find_oper(wpa_s);
6345
6346         if (!wpa_s->p2p_go_do_acs) {
6347                 freq = wpas_p2p_select_go_freq(wpa_s, freq);
6348                 if (freq < 0)
6349                         return -1;
6350         }
6351
6352         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6353                                     ht40, vht, max_oper_chwidth, he, NULL))
6354                 return -1;
6355
6356         p2p_go_params(wpa_s->global->p2p, &params);
6357         params.persistent_group = persistent_group;
6358
6359         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6360         if (wpa_s == NULL)
6361                 return -1;
6362         wpas_start_wps_go(wpa_s, &params, 0);
6363
6364         return 0;
6365 }
6366
6367
6368 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6369                                  struct wpa_ssid *params, int addr_allocated,
6370                                  int freq, int force_scan)
6371 {
6372         struct wpa_ssid *ssid;
6373
6374         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6375         if (wpa_s == NULL)
6376                 return -1;
6377         if (force_scan)
6378                 os_get_reltime(&wpa_s->scan_min_time);
6379         wpa_s->p2p_last_4way_hs_fail = NULL;
6380
6381         wpa_supplicant_ap_deinit(wpa_s);
6382
6383         ssid = wpa_config_add_network(wpa_s->conf);
6384         if (ssid == NULL)
6385                 return -1;
6386         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
6387         wpa_config_set_network_defaults(ssid);
6388         ssid->temporary = 1;
6389         ssid->proto = WPA_PROTO_RSN;
6390         ssid->pbss = params->pbss;
6391         ssid->pairwise_cipher = params->pbss ? WPA_CIPHER_GCMP :
6392                 WPA_CIPHER_CCMP;
6393         ssid->group_cipher = params->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP;
6394         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6395         ssid->ssid = os_malloc(params->ssid_len);
6396         if (ssid->ssid == NULL) {
6397                 wpa_config_remove_network(wpa_s->conf, ssid->id);
6398                 return -1;
6399         }
6400         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6401         ssid->ssid_len = params->ssid_len;
6402         ssid->p2p_group = 1;
6403         ssid->export_keys = 1;
6404         if (params->psk_set) {
6405                 os_memcpy(ssid->psk, params->psk, 32);
6406                 ssid->psk_set = 1;
6407         }
6408         if (params->passphrase)
6409                 ssid->passphrase = os_strdup(params->passphrase);
6410
6411         wpa_s->show_group_started = 1;
6412         wpa_s->p2p_in_invitation = 1;
6413         wpa_s->p2p_invite_go_freq = freq;
6414         wpa_s->p2p_go_group_formation_completed = 0;
6415         wpa_s->global->p2p_group_formation = wpa_s;
6416
6417         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6418                              NULL);
6419         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6420                                wpas_p2p_group_formation_timeout,
6421                                wpa_s->p2pdev, NULL);
6422         wpa_supplicant_select_network(wpa_s, ssid);
6423
6424         return 0;
6425 }
6426
6427
6428 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6429                                   struct wpa_ssid *ssid, int addr_allocated,
6430                                   int force_freq, int neg_freq,
6431                                   int vht_center_freq2, int ht40,
6432                                   int vht, int max_oper_chwidth, int he,
6433                                   const struct p2p_channels *channels,
6434                                   int connection_timeout, int force_scan)
6435 {
6436         struct p2p_go_neg_results params;
6437         int go = 0, freq;
6438
6439         if (ssid->disabled != 2 || ssid->ssid == NULL)
6440                 return -1;
6441
6442         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6443             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6444                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6445                            "already running");
6446                 if (go == 0 &&
6447                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6448                                          wpa_s->p2pdev, NULL)) {
6449                         /*
6450                          * This can happen if Invitation Response frame was lost
6451                          * and the peer (GO of a persistent group) tries to
6452                          * invite us again. Reschedule the timeout to avoid
6453                          * terminating the wait for the connection too early
6454                          * since we now know that the peer is still trying to
6455                          * invite us instead of having already started the GO.
6456                          */
6457                         wpa_printf(MSG_DEBUG,
6458                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6459                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6460                                                wpas_p2p_group_formation_timeout,
6461                                                wpa_s->p2pdev, NULL);
6462                 }
6463                 return 0;
6464         }
6465
6466         os_free(wpa_s->global->add_psk);
6467         wpa_s->global->add_psk = NULL;
6468
6469         /* Make sure we are not running find during connection establishment */
6470         wpas_p2p_stop_find_oper(wpa_s);
6471
6472         wpa_s->p2p_fallback_to_go_neg = 0;
6473
6474         if (ssid->mode == WPAS_MODE_P2P_GO) {
6475                 if (force_freq > 0) {
6476                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6477                         if (freq < 0)
6478                                 return -1;
6479                 } else {
6480                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6481                         if (freq < 0 ||
6482                             (freq > 0 && !freq_included(wpa_s, channels, freq)))
6483                                 freq = 0;
6484                 }
6485         } else if (ssid->mode == WPAS_MODE_INFRA) {
6486                 freq = neg_freq;
6487                 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6488                         struct os_reltime now;
6489                         struct wpa_bss *bss =
6490                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6491
6492                         os_get_reltime(&now);
6493                         if (bss &&
6494                             !os_reltime_expired(&now, &bss->last_update, 5) &&
6495                             freq_included(wpa_s, channels, bss->freq))
6496                                 freq = bss->freq;
6497                         else
6498                                 freq = 0;
6499                 }
6500
6501                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6502                                              force_scan);
6503         } else {
6504                 return -1;
6505         }
6506
6507         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6508                                     ht40, vht, max_oper_chwidth, he, channels))
6509                 return -1;
6510
6511         params.role_go = 1;
6512         params.psk_set = ssid->psk_set;
6513         if (params.psk_set)
6514                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6515         if (ssid->passphrase) {
6516                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6517                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6518                                    "persistent group");
6519                         return -1;
6520                 }
6521                 os_strlcpy(params.passphrase, ssid->passphrase,
6522                            sizeof(params.passphrase));
6523         }
6524         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6525         params.ssid_len = ssid->ssid_len;
6526         params.persistent_group = 1;
6527
6528         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6529         if (wpa_s == NULL)
6530                 return -1;
6531
6532         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6533
6534         wpa_s->p2p_first_connection_timeout = connection_timeout;
6535         wpas_start_wps_go(wpa_s, &params, 0);
6536
6537         return 0;
6538 }
6539
6540
6541 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6542                                struct wpabuf *proberesp_ies)
6543 {
6544         struct wpa_supplicant *wpa_s = ctx;
6545         if (wpa_s->ap_iface) {
6546                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6547                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6548                         wpabuf_free(beacon_ies);
6549                         wpabuf_free(proberesp_ies);
6550                         return;
6551                 }
6552                 if (beacon_ies) {
6553                         wpabuf_free(hapd->p2p_beacon_ie);
6554                         hapd->p2p_beacon_ie = beacon_ies;
6555                 }
6556                 wpabuf_free(hapd->p2p_probe_resp_ie);
6557                 hapd->p2p_probe_resp_ie = proberesp_ies;
6558         } else {
6559                 wpabuf_free(beacon_ies);
6560                 wpabuf_free(proberesp_ies);
6561         }
6562         wpa_supplicant_ap_update_beacon(wpa_s);
6563 }
6564
6565
6566 static void wpas_p2p_idle_update(void *ctx, int idle)
6567 {
6568         struct wpa_supplicant *wpa_s = ctx;
6569         if (!wpa_s->ap_iface)
6570                 return;
6571         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6572         if (idle) {
6573                 if (wpa_s->global->p2p_fail_on_wps_complete &&
6574                     wpa_s->p2p_in_provisioning) {
6575                         wpas_p2p_grpform_fail_after_wps(wpa_s);
6576                         return;
6577                 }
6578                 wpas_p2p_set_group_idle_timeout(wpa_s);
6579         } else
6580                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6581 }
6582
6583
6584 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6585                                        struct wpa_ssid *ssid)
6586 {
6587         struct p2p_group *group;
6588         struct p2p_group_config *cfg;
6589
6590         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6591             !ssid->p2p_group)
6592                 return NULL;
6593
6594         cfg = os_zalloc(sizeof(*cfg));
6595         if (cfg == NULL)
6596                 return NULL;
6597
6598         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6599                 cfg->persistent_group = 2;
6600         else if (ssid->p2p_persistent_group)
6601                 cfg->persistent_group = 1;
6602         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6603         if (wpa_s->max_stations &&
6604             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6605                 cfg->max_clients = wpa_s->max_stations;
6606         else
6607                 cfg->max_clients = wpa_s->conf->max_num_sta;
6608         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6609         cfg->ssid_len = ssid->ssid_len;
6610         cfg->freq = ssid->frequency;
6611         cfg->cb_ctx = wpa_s;
6612         cfg->ie_update = wpas_p2p_ie_update;
6613         cfg->idle_update = wpas_p2p_idle_update;
6614         cfg->ip_addr_alloc = WPA_GET_BE32(wpa_s->p2pdev->conf->ip_addr_start)
6615                 != 0;
6616
6617         group = p2p_group_init(wpa_s->global->p2p, cfg);
6618         if (group == NULL)
6619                 os_free(cfg);
6620         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6621                 p2p_group_notif_formation_done(group);
6622         wpa_s->p2p_group = group;
6623         return group;
6624 }
6625
6626
6627 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6628                           int registrar)
6629 {
6630         struct wpa_ssid *ssid = wpa_s->current_ssid;
6631
6632         if (!wpa_s->p2p_in_provisioning) {
6633                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6634                            "provisioning not in progress");
6635                 return;
6636         }
6637
6638         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6639                 u8 go_dev_addr[ETH_ALEN];
6640                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6641                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6642                                           ssid->ssid_len);
6643                 /* Clear any stored provisioning info */
6644                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6645         }
6646
6647         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6648                              NULL);
6649         wpa_s->p2p_go_group_formation_completed = 1;
6650         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6651                 /*
6652                  * Use a separate timeout for initial data connection to
6653                  * complete to allow the group to be removed automatically if
6654                  * something goes wrong in this step before the P2P group idle
6655                  * timeout mechanism is taken into use.
6656                  */
6657                 wpa_dbg(wpa_s, MSG_DEBUG,
6658                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6659                         P2P_MAX_INITIAL_CONN_WAIT);
6660                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6661                                        wpas_p2p_group_formation_timeout,
6662                                        wpa_s->p2pdev, NULL);
6663                 /* Complete group formation on successful data connection. */
6664                 wpa_s->p2p_go_group_formation_completed = 0;
6665         } else if (ssid) {
6666                 /*
6667                  * Use a separate timeout for initial data connection to
6668                  * complete to allow the group to be removed automatically if
6669                  * the client does not complete data connection successfully.
6670                  */
6671                 wpa_dbg(wpa_s, MSG_DEBUG,
6672                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6673                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6674                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6675                                        wpas_p2p_group_formation_timeout,
6676                                        wpa_s->p2pdev, NULL);
6677                 /*
6678                  * Complete group formation on first successful data connection
6679                  */
6680                 wpa_s->p2p_go_group_formation_completed = 0;
6681         }
6682         if (wpa_s->global->p2p)
6683                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6684         wpas_group_formation_completed(wpa_s, 1, 0);
6685 }
6686
6687
6688 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6689                          struct wps_event_fail *fail)
6690 {
6691         if (!wpa_s->p2p_in_provisioning) {
6692                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6693                            "provisioning not in progress");
6694                 return;
6695         }
6696
6697         if (wpa_s->go_params) {
6698                 p2p_clear_provisioning_info(
6699                         wpa_s->global->p2p,
6700                         wpa_s->go_params->peer_device_addr);
6701         }
6702
6703         wpas_notify_p2p_wps_failed(wpa_s, fail);
6704
6705         if (wpa_s == wpa_s->global->p2p_group_formation) {
6706                 /*
6707                  * Allow some time for the failed WPS negotiation exchange to
6708                  * complete, but remove the group since group formation cannot
6709                  * succeed after provisioning failure.
6710                  */
6711                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6712                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6713                 eloop_deplete_timeout(0, 50000,
6714                                       wpas_p2p_group_formation_timeout,
6715                                       wpa_s->p2pdev, NULL);
6716         }
6717 }
6718
6719
6720 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6721 {
6722         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6723             !wpa_s->p2p_in_provisioning)
6724                 return 0;
6725
6726         wpas_p2p_grpform_fail_after_wps(wpa_s);
6727
6728         return 1;
6729 }
6730
6731
6732 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6733                        const char *config_method,
6734                        enum wpas_p2p_prov_disc_use use,
6735                        struct p2ps_provision *p2ps_prov)
6736 {
6737         u16 config_methods;
6738
6739         wpa_s->global->pending_p2ps_group = 0;
6740         wpa_s->global->pending_p2ps_group_freq = 0;
6741         wpa_s->p2p_fallback_to_go_neg = 0;
6742         wpa_s->pending_pd_use = NORMAL_PD;
6743         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6744                 p2ps_prov->conncap = p2ps_group_capability(
6745                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6746                         &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6747
6748                 wpa_printf(MSG_DEBUG,
6749                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6750                            __func__, p2ps_prov->conncap,
6751                            p2ps_prov->adv_id, p2ps_prov->conncap,
6752                            p2ps_prov->status, p2ps_prov->info);
6753
6754                 config_methods = 0;
6755         } else if (os_strncmp(config_method, "display", 7) == 0)
6756                 config_methods = WPS_CONFIG_DISPLAY;
6757         else if (os_strncmp(config_method, "keypad", 6) == 0)
6758                 config_methods = WPS_CONFIG_KEYPAD;
6759         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6760                  os_strncmp(config_method, "pushbutton", 10) == 0)
6761                 config_methods = WPS_CONFIG_PUSHBUTTON;
6762         else {
6763                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6764                 os_free(p2ps_prov);
6765                 return -1;
6766         }
6767
6768         if (use == WPAS_P2P_PD_AUTO) {
6769                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6770                 wpa_s->pending_pd_config_methods = config_methods;
6771                 wpa_s->p2p_auto_pd = 1;
6772                 wpa_s->p2p_auto_join = 0;
6773                 wpa_s->pending_pd_before_join = 0;
6774                 wpa_s->auto_pd_scan_retry = 0;
6775                 wpas_p2p_stop_find(wpa_s);
6776                 wpa_s->p2p_join_scan_count = 0;
6777                 os_get_reltime(&wpa_s->p2p_auto_started);
6778                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6779                            wpa_s->p2p_auto_started.sec,
6780                            wpa_s->p2p_auto_started.usec);
6781                 wpas_p2p_join_scan(wpa_s, NULL);
6782                 return 0;
6783         }
6784
6785         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6786                 os_free(p2ps_prov);
6787                 return -1;
6788         }
6789
6790         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6791                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6792                                  0, 1);
6793 }
6794
6795
6796 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6797                               char *end)
6798 {
6799         return p2p_scan_result_text(ies, ies_len, buf, end);
6800 }
6801
6802
6803 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6804 {
6805         if (!offchannel_pending_action_tx(wpa_s))
6806                 return;
6807
6808         if (wpa_s->p2p_send_action_work) {
6809                 wpas_p2p_free_send_action_work(wpa_s);
6810                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
6811                                      wpa_s, NULL);
6812                 offchannel_send_action_done(wpa_s);
6813         }
6814
6815         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6816                    "operation request");
6817         offchannel_clear_pending_action_tx(wpa_s);
6818 }
6819
6820
6821 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6822                   enum p2p_discovery_type type,
6823                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6824                   const u8 *dev_id, unsigned int search_delay,
6825                   u8 seek_cnt, const char **seek_string, int freq)
6826 {
6827         wpas_p2p_clear_pending_action_tx(wpa_s);
6828         wpa_s->p2p_long_listen = 0;
6829
6830         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6831             wpa_s->p2p_in_provisioning) {
6832                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Reject p2p_find operation%s%s",
6833                         (wpa_s->global->p2p_disabled || !wpa_s->global->p2p) ?
6834                         " (P2P disabled)" : "",
6835                         wpa_s->p2p_in_provisioning ?
6836                         " (p2p_in_provisioning)" : "");
6837                 return -1;
6838         }
6839
6840         wpa_supplicant_cancel_sched_scan(wpa_s);
6841
6842         return p2p_find(wpa_s->global->p2p, timeout, type,
6843                         num_req_dev_types, req_dev_types, dev_id,
6844                         search_delay, seek_cnt, seek_string, freq);
6845 }
6846
6847
6848 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6849                                             struct wpa_scan_results *scan_res)
6850 {
6851         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6852
6853         if (wpa_s->p2p_scan_work) {
6854                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6855                 wpa_s->p2p_scan_work = NULL;
6856                 radio_work_done(work);
6857         }
6858
6859         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6860                 return;
6861
6862         /*
6863          * Indicate that results have been processed so that the P2P module can
6864          * continue pending tasks.
6865          */
6866         p2p_scan_res_handled(wpa_s->global->p2p);
6867 }
6868
6869
6870 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6871 {
6872         wpas_p2p_clear_pending_action_tx(wpa_s);
6873         wpa_s->p2p_long_listen = 0;
6874         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6875         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6876
6877         if (wpa_s->global->p2p)
6878                 p2p_stop_find(wpa_s->global->p2p);
6879
6880         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6881                 wpa_printf(MSG_DEBUG,
6882                            "P2P: Do not consider the scan results after stop_find");
6883                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6884         }
6885 }
6886
6887
6888 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6889 {
6890         wpas_p2p_stop_find_oper(wpa_s);
6891         if (!wpa_s->global->pending_group_iface_for_p2ps)
6892                 wpas_p2p_remove_pending_group_interface(wpa_s);
6893 }
6894
6895
6896 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6897 {
6898         struct wpa_supplicant *wpa_s = eloop_ctx;
6899         wpa_s->p2p_long_listen = 0;
6900 }
6901
6902
6903 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6904 {
6905         int res;
6906
6907         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6908                 return -1;
6909
6910         if (wpa_s->p2p_lo_started) {
6911                 wpa_printf(MSG_DEBUG,
6912                         "P2P: Cannot start P2P listen, it is offloaded");
6913                 return -1;
6914         }
6915
6916         wpa_supplicant_cancel_sched_scan(wpa_s);
6917         wpas_p2p_clear_pending_action_tx(wpa_s);
6918
6919         if (timeout == 0) {
6920                 /*
6921                  * This is a request for unlimited Listen state. However, at
6922                  * least for now, this is mapped to a Listen state for one
6923                  * hour.
6924                  */
6925                 timeout = 3600;
6926         }
6927         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6928         wpa_s->p2p_long_listen = 0;
6929
6930         /*
6931          * Stop previous find/listen operation to avoid trying to request a new
6932          * remain-on-channel operation while the driver is still running the
6933          * previous one.
6934          */
6935         if (wpa_s->global->p2p)
6936                 p2p_stop_find(wpa_s->global->p2p);
6937
6938         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6939         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6940                 wpa_s->p2p_long_listen = timeout * 1000;
6941                 eloop_register_timeout(timeout, 0,
6942                                        wpas_p2p_long_listen_timeout,
6943                                        wpa_s, NULL);
6944         }
6945
6946         return res;
6947 }
6948
6949
6950 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6951                           u8 *buf, size_t len, int p2p_group)
6952 {
6953         struct wpabuf *p2p_ie;
6954         int ret;
6955
6956         if (wpa_s->global->p2p_disabled)
6957                 return -1;
6958         /*
6959          * Advertize mandatory cross connection capability even on
6960          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6961          */
6962         if (wpa_s->conf->p2p_disabled && p2p_group)
6963                 return -1;
6964         if (wpa_s->global->p2p == NULL)
6965                 return -1;
6966         if (bss == NULL)
6967                 return -1;
6968
6969         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6970         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6971                                p2p_group, p2p_ie);
6972         wpabuf_free(p2p_ie);
6973
6974         return ret;
6975 }
6976
6977
6978 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6979                           const u8 *dst, const u8 *bssid,
6980                           const u8 *ie, size_t ie_len,
6981                           unsigned int rx_freq, int ssi_signal)
6982 {
6983         if (wpa_s->global->p2p_disabled)
6984                 return 0;
6985         if (wpa_s->global->p2p == NULL)
6986                 return 0;
6987
6988         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6989                                  ie, ie_len, rx_freq, wpa_s->p2p_lo_started)) {
6990         case P2P_PREQ_NOT_P2P:
6991                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6992                                  ssi_signal);
6993                 /* fall through */
6994         case P2P_PREQ_MALFORMED:
6995         case P2P_PREQ_NOT_LISTEN:
6996         case P2P_PREQ_NOT_PROCESSED:
6997         default: /* make gcc happy */
6998                 return 0;
6999         case P2P_PREQ_PROCESSED:
7000                 return 1;
7001         }
7002 }
7003
7004
7005 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
7006                         const u8 *sa, const u8 *bssid,
7007                         u8 category, const u8 *data, size_t len, int freq)
7008 {
7009         if (wpa_s->global->p2p_disabled)
7010                 return;
7011         if (wpa_s->global->p2p == NULL)
7012                 return;
7013
7014         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
7015                       freq);
7016 }
7017
7018
7019 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
7020 {
7021         unsigned int bands;
7022
7023         if (wpa_s->global->p2p_disabled)
7024                 return;
7025         if (wpa_s->global->p2p == NULL)
7026                 return;
7027
7028         bands = wpas_get_bands(wpa_s, NULL);
7029         p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
7030 }
7031
7032
7033 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
7034 {
7035         p2p_group_deinit(wpa_s->p2p_group);
7036         wpa_s->p2p_group = NULL;
7037
7038         wpa_s->ap_configured_cb = NULL;
7039         wpa_s->ap_configured_cb_ctx = NULL;
7040         wpa_s->ap_configured_cb_data = NULL;
7041         wpa_s->connect_without_scan = NULL;
7042 }
7043
7044
7045 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
7046 {
7047         wpa_s->p2p_long_listen = 0;
7048
7049         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7050                 return -1;
7051
7052         return p2p_reject(wpa_s->global->p2p, addr);
7053 }
7054
7055
7056 /* Invite to reinvoke a persistent group */
7057 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
7058                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
7059                     int vht_center_freq2, int ht40, int vht, int max_chwidth,
7060                     int pref_freq, int he)
7061 {
7062         enum p2p_invite_role role;
7063         u8 *bssid = NULL;
7064         int force_freq = 0;
7065         int res;
7066         int no_pref_freq_given = pref_freq == 0;
7067         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
7068
7069         wpa_s->global->p2p_invite_group = NULL;
7070         if (peer_addr)
7071                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
7072         else
7073                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
7074
7075         wpa_s->p2p_persistent_go_freq = freq;
7076         wpa_s->p2p_go_ht40 = !!ht40;
7077         wpa_s->p2p_go_vht = !!vht;
7078         wpa_s->p2p_go_he = !!he;
7079         wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
7080         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
7081         if (ssid->mode == WPAS_MODE_P2P_GO) {
7082                 role = P2P_INVITE_ROLE_GO;
7083                 if (peer_addr == NULL) {
7084                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
7085                                    "address in invitation command");
7086                         return -1;
7087                 }
7088                 if (wpas_p2p_create_iface(wpa_s)) {
7089                         if (wpas_p2p_add_group_interface(wpa_s,
7090                                                          WPA_IF_P2P_GO) < 0) {
7091                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
7092                                            "allocate a new interface for the "
7093                                            "group");
7094                                 return -1;
7095                         }
7096                         bssid = wpa_s->pending_interface_addr;
7097                 } else if (wpa_s->p2p_mgmt)
7098                         bssid = wpa_s->parent->own_addr;
7099                 else
7100                         bssid = wpa_s->own_addr;
7101         } else {
7102                 role = P2P_INVITE_ROLE_CLIENT;
7103                 peer_addr = ssid->bssid;
7104         }
7105         wpa_s->pending_invite_ssid_id = ssid->id;
7106
7107         size = P2P_MAX_PREF_CHANNELS;
7108         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
7109                                    role == P2P_INVITE_ROLE_GO,
7110                                    pref_freq_list, &size);
7111         if (res)
7112                 return res;
7113
7114         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7115                 return -1;
7116
7117         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
7118
7119         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
7120             no_pref_freq_given && pref_freq > 0 &&
7121             wpa_s->num_multichan_concurrent > 1 &&
7122             wpas_p2p_num_unused_channels(wpa_s) > 0) {
7123                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
7124                            pref_freq);
7125                 pref_freq = 0;
7126         }
7127
7128         /*
7129          * Stop any find/listen operations before invitation and possibly
7130          * connection establishment.
7131          */
7132         wpas_p2p_stop_find_oper(wpa_s);
7133
7134         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
7135                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
7136                           1, pref_freq, -1);
7137 }
7138
7139
7140 /* Invite to join an active group */
7141 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
7142                           const u8 *peer_addr, const u8 *go_dev_addr)
7143 {
7144         struct wpa_global *global = wpa_s->global;
7145         enum p2p_invite_role role;
7146         u8 *bssid = NULL;
7147         struct wpa_ssid *ssid;
7148         int persistent;
7149         int freq = 0, force_freq = 0, pref_freq = 0;
7150         int res;
7151         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
7152
7153         wpa_s->p2p_persistent_go_freq = 0;
7154         wpa_s->p2p_go_ht40 = 0;
7155         wpa_s->p2p_go_vht = 0;
7156         wpa_s->p2p_go_vht_center_freq2 = 0;
7157         wpa_s->p2p_go_max_oper_chwidth = 0;
7158
7159         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7160                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
7161                         break;
7162         }
7163         if (wpa_s == NULL) {
7164                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
7165                 return -1;
7166         }
7167
7168         ssid = wpa_s->current_ssid;
7169         if (ssid == NULL) {
7170                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
7171                            "invitation");
7172                 return -1;
7173         }
7174
7175         wpa_s->global->p2p_invite_group = wpa_s;
7176         persistent = ssid->p2p_persistent_group &&
7177                 wpas_p2p_get_persistent(wpa_s->p2pdev, peer_addr,
7178                                         ssid->ssid, ssid->ssid_len);
7179
7180         if (ssid->mode == WPAS_MODE_P2P_GO) {
7181                 role = P2P_INVITE_ROLE_ACTIVE_GO;
7182                 bssid = wpa_s->own_addr;
7183                 if (go_dev_addr == NULL)
7184                         go_dev_addr = wpa_s->global->p2p_dev_addr;
7185                 freq = ssid->frequency;
7186         } else {
7187                 role = P2P_INVITE_ROLE_CLIENT;
7188                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
7189                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
7190                                    "invite to current group");
7191                         return -1;
7192                 }
7193                 bssid = wpa_s->bssid;
7194                 if (go_dev_addr == NULL &&
7195                     !is_zero_ether_addr(wpa_s->go_dev_addr))
7196                         go_dev_addr = wpa_s->go_dev_addr;
7197                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
7198                         (int) wpa_s->assoc_freq;
7199         }
7200         wpa_s->p2pdev->pending_invite_ssid_id = -1;
7201
7202         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7203                 return -1;
7204
7205         size = P2P_MAX_PREF_CHANNELS;
7206         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
7207                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
7208                                    pref_freq_list, &size);
7209         if (res)
7210                 return res;
7211         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
7212
7213         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
7214                           ssid->ssid, ssid->ssid_len, force_freq,
7215                           go_dev_addr, persistent, pref_freq, -1);
7216 }
7217
7218
7219 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
7220 {
7221         struct wpa_ssid *ssid = wpa_s->current_ssid;
7222         u8 go_dev_addr[ETH_ALEN];
7223         int persistent;
7224         int freq;
7225         u8 ip[3 * 4], *ip_ptr = NULL;
7226         char ip_addr[100];
7227
7228         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
7229                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7230                                      wpa_s->p2pdev, NULL);
7231         }
7232
7233         if (!wpa_s->show_group_started || !ssid)
7234                 return;
7235
7236         wpa_s->show_group_started = 0;
7237         if (!wpa_s->p2p_go_group_formation_completed &&
7238             wpa_s->global->p2p_group_formation == wpa_s) {
7239                 wpa_dbg(wpa_s, MSG_DEBUG,
7240                         "P2P: Marking group formation completed on client on data connection");
7241                 wpa_s->p2p_go_group_formation_completed = 1;
7242                 wpa_s->global->p2p_group_formation = NULL;
7243                 wpa_s->p2p_in_provisioning = 0;
7244                 wpa_s->p2p_in_invitation = 0;
7245         }
7246
7247         os_memset(go_dev_addr, 0, ETH_ALEN);
7248         if (ssid->bssid_set)
7249                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
7250         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
7251                                                ssid->ssid_len);
7252         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
7253
7254         if (wpa_s->global->p2p_group_formation == wpa_s)
7255                 wpa_s->global->p2p_group_formation = NULL;
7256
7257         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
7258                 (int) wpa_s->assoc_freq;
7259
7260         ip_addr[0] = '\0';
7261         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
7262                 int res;
7263
7264                 res = os_snprintf(ip_addr, sizeof(ip_addr),
7265                                   " ip_addr=%u.%u.%u.%u "
7266                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
7267                                   ip[0], ip[1], ip[2], ip[3],
7268                                   ip[4], ip[5], ip[6], ip[7],
7269                                   ip[8], ip[9], ip[10], ip[11]);
7270                 if (os_snprintf_error(sizeof(ip_addr), res))
7271                         ip_addr[0] = '\0';
7272                 ip_ptr = ip;
7273         }
7274
7275         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
7276                                ssid->passphrase == NULL && ssid->psk_set ?
7277                                ssid->psk : NULL,
7278                                ssid->passphrase, go_dev_addr, persistent,
7279                                ip_addr);
7280
7281         if (persistent)
7282                 wpas_p2p_store_persistent_group(wpa_s->p2pdev,
7283                                                 ssid, go_dev_addr);
7284
7285         wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 1, ip_ptr);
7286 }
7287
7288
7289 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
7290                           u32 interval1, u32 duration2, u32 interval2)
7291 {
7292         int ret;
7293
7294         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7295                 return -1;
7296
7297         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
7298             wpa_s->current_ssid == NULL ||
7299             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
7300                 return -1;
7301
7302         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
7303                                wpa_s->own_addr, wpa_s->assoc_freq,
7304                                duration1, interval1, duration2, interval2);
7305         if (ret == 0)
7306                 wpa_s->waiting_presence_resp = 1;
7307
7308         return ret;
7309 }
7310
7311
7312 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
7313                         unsigned int interval)
7314 {
7315         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7316                 return -1;
7317
7318         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
7319 }
7320
7321
7322 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
7323 {
7324         if (wpa_s->current_ssid == NULL) {
7325                 /*
7326                  * current_ssid can be cleared when P2P client interface gets
7327                  * disconnected, so assume this interface was used as P2P
7328                  * client.
7329                  */
7330                 return 1;
7331         }
7332         return wpa_s->current_ssid->p2p_group &&
7333                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
7334 }
7335
7336
7337 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
7338 {
7339         struct wpa_supplicant *wpa_s = eloop_ctx;
7340
7341         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
7342                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
7343                            "disabled");
7344                 return;
7345         }
7346
7347         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
7348                    "group");
7349         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7350 }
7351
7352
7353 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7354 {
7355         int timeout;
7356
7357         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7358                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7359
7360         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7361                 return;
7362
7363         timeout = wpa_s->conf->p2p_group_idle;
7364         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7365             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7366             timeout = P2P_MAX_CLIENT_IDLE;
7367
7368         if (timeout == 0)
7369                 return;
7370
7371         if (timeout < 0) {
7372                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7373                         timeout = 0; /* special client mode no-timeout */
7374                 else
7375                         return;
7376         }
7377
7378         if (wpa_s->p2p_in_provisioning) {
7379                 /*
7380                  * Use the normal group formation timeout during the
7381                  * provisioning phase to avoid terminating this process too
7382                  * early due to group idle timeout.
7383                  */
7384                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7385                            "during provisioning");
7386                 return;
7387         }
7388
7389         if (wpa_s->show_group_started) {
7390                 /*
7391                  * Use the normal group formation timeout between the end of
7392                  * the provisioning phase and completion of 4-way handshake to
7393                  * avoid terminating this process too early due to group idle
7394                  * timeout.
7395                  */
7396                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7397                            "while waiting for initial 4-way handshake to "
7398                            "complete");
7399                 return;
7400         }
7401
7402         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7403                    timeout);
7404         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7405                                wpa_s, NULL);
7406 }
7407
7408
7409 /* Returns 1 if the interface was removed */
7410 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7411                           u16 reason_code, const u8 *ie, size_t ie_len,
7412                           int locally_generated)
7413 {
7414         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7415                 return 0;
7416
7417         if (!locally_generated)
7418                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7419                                  ie_len);
7420
7421         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7422             wpa_s->current_ssid &&
7423             wpa_s->current_ssid->p2p_group &&
7424             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7425                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7426                            "session is ending");
7427                 if (wpas_p2p_group_delete(wpa_s,
7428                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7429                     > 0)
7430                         return 1;
7431         }
7432
7433         return 0;
7434 }
7435
7436
7437 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7438                              u16 reason_code, const u8 *ie, size_t ie_len,
7439                              int locally_generated)
7440 {
7441         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7442                 return;
7443
7444         if (!locally_generated)
7445                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7446                                    ie_len);
7447 }
7448
7449
7450 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7451 {
7452         struct p2p_data *p2p = wpa_s->global->p2p;
7453
7454         if (p2p == NULL)
7455                 return;
7456
7457         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7458                 return;
7459
7460         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7461                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7462
7463         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7464                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7465
7466         if (wpa_s->wps &&
7467             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7468                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7469
7470         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7471                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7472
7473         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7474                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7475                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7476                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7477                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7478         }
7479
7480         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7481                 p2p_set_sec_dev_types(p2p,
7482                                       (void *) wpa_s->conf->sec_device_type,
7483                                       wpa_s->conf->num_sec_device_types);
7484
7485         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7486                 int i;
7487                 p2p_remove_wps_vendor_extensions(p2p);
7488                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7489                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7490                                 continue;
7491                         p2p_add_wps_vendor_extension(
7492                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
7493                 }
7494         }
7495
7496         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7497             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7498                 char country[3];
7499                 country[0] = wpa_s->conf->country[0];
7500                 country[1] = wpa_s->conf->country[1];
7501                 country[2] = 0x04;
7502                 p2p_set_country(p2p, country);
7503         }
7504
7505         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7506                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7507                                      wpa_s->conf->p2p_ssid_postfix ?
7508                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7509                                      0);
7510         }
7511
7512         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7513                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7514
7515         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7516                 u8 reg_class, channel;
7517                 int ret;
7518                 unsigned int r;
7519                 u8 channel_forced;
7520
7521                 if (wpa_s->conf->p2p_listen_reg_class &&
7522                     wpa_s->conf->p2p_listen_channel) {
7523                         reg_class = wpa_s->conf->p2p_listen_reg_class;
7524                         channel = wpa_s->conf->p2p_listen_channel;
7525                         channel_forced = 1;
7526                 } else {
7527                         reg_class = 81;
7528                         /*
7529                          * Pick one of the social channels randomly as the
7530                          * listen channel.
7531                          */
7532                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7533                                 channel = 1;
7534                         else
7535                                 channel = 1 + (r % 3) * 5;
7536                         channel_forced = 0;
7537                 }
7538                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7539                                              channel_forced);
7540                 if (ret)
7541                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7542                                    "failed: %d", ret);
7543         }
7544         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7545                 u8 op_reg_class, op_channel, cfg_op_channel;
7546                 int ret = 0;
7547                 unsigned int r;
7548                 if (wpa_s->conf->p2p_oper_reg_class &&
7549                     wpa_s->conf->p2p_oper_channel) {
7550                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7551                         op_channel = wpa_s->conf->p2p_oper_channel;
7552                         cfg_op_channel = 1;
7553                 } else {
7554                         op_reg_class = 81;
7555                         /*
7556                          * Use random operation channel from (1, 6, 11)
7557                          *if no other preference is indicated.
7558                          */
7559                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7560                                 op_channel = 1;
7561                         else
7562                                 op_channel = 1 + (r % 3) * 5;
7563                         cfg_op_channel = 0;
7564                 }
7565                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7566                                            cfg_op_channel);
7567                 if (ret)
7568                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7569                                    "failed: %d", ret);
7570         }
7571
7572         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7573                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7574                                       wpa_s->conf->p2p_pref_chan) < 0) {
7575                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7576                                    "update failed");
7577                 }
7578
7579                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7580                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7581                                    "update failed");
7582                 }
7583         }
7584
7585         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7586                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7587 }
7588
7589
7590 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7591                      int duration)
7592 {
7593         if (!wpa_s->ap_iface)
7594                 return -1;
7595         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7596                                    duration);
7597 }
7598
7599
7600 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7601 {
7602         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7603                 return -1;
7604
7605         wpa_s->global->cross_connection = enabled;
7606         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7607
7608         if (!enabled) {
7609                 struct wpa_supplicant *iface;
7610
7611                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7612                 {
7613                         if (iface->cross_connect_enabled == 0)
7614                                 continue;
7615
7616                         iface->cross_connect_enabled = 0;
7617                         iface->cross_connect_in_use = 0;
7618                         wpa_msg_global(iface->p2pdev, MSG_INFO,
7619                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7620                                        iface->ifname,
7621                                        iface->cross_connect_uplink);
7622                 }
7623         }
7624
7625         return 0;
7626 }
7627
7628
7629 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7630 {
7631         struct wpa_supplicant *iface;
7632
7633         if (!uplink->global->cross_connection)
7634                 return;
7635
7636         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7637                 if (!iface->cross_connect_enabled)
7638                         continue;
7639                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7640                     0)
7641                         continue;
7642                 if (iface->ap_iface == NULL)
7643                         continue;
7644                 if (iface->cross_connect_in_use)
7645                         continue;
7646
7647                 iface->cross_connect_in_use = 1;
7648                 wpa_msg_global(iface->p2pdev, MSG_INFO,
7649                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7650                                iface->ifname, iface->cross_connect_uplink);
7651         }
7652 }
7653
7654
7655 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7656 {
7657         struct wpa_supplicant *iface;
7658
7659         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7660                 if (!iface->cross_connect_enabled)
7661                         continue;
7662                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7663                     0)
7664                         continue;
7665                 if (!iface->cross_connect_in_use)
7666                         continue;
7667
7668                 wpa_msg_global(iface->p2pdev, MSG_INFO,
7669                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7670                                iface->ifname, iface->cross_connect_uplink);
7671                 iface->cross_connect_in_use = 0;
7672         }
7673 }
7674
7675
7676 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7677 {
7678         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7679             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7680             wpa_s->cross_connect_disallowed)
7681                 wpas_p2p_disable_cross_connect(wpa_s);
7682         else
7683                 wpas_p2p_enable_cross_connect(wpa_s);
7684         if (!wpa_s->ap_iface &&
7685             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7686                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7687 }
7688
7689
7690 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7691 {
7692         wpas_p2p_disable_cross_connect(wpa_s);
7693         if (!wpa_s->ap_iface &&
7694             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7695                                          wpa_s, NULL))
7696                 wpas_p2p_set_group_idle_timeout(wpa_s);
7697 }
7698
7699
7700 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7701 {
7702         struct wpa_supplicant *iface;
7703
7704         if (!wpa_s->global->cross_connection)
7705                 return;
7706
7707         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7708                 if (iface == wpa_s)
7709                         continue;
7710                 if (iface->drv_flags &
7711                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7712                         continue;
7713                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7714                     iface != wpa_s->parent)
7715                         continue;
7716
7717                 wpa_s->cross_connect_enabled = 1;
7718                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7719                            sizeof(wpa_s->cross_connect_uplink));
7720                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7721                            "%s to %s whenever uplink is available",
7722                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7723
7724                 if (iface->ap_iface || iface->current_ssid == NULL ||
7725                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7726                     iface->cross_connect_disallowed ||
7727                     iface->wpa_state != WPA_COMPLETED)
7728                         break;
7729
7730                 wpa_s->cross_connect_in_use = 1;
7731                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
7732                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7733                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7734                 break;
7735         }
7736 }
7737
7738
7739 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7740 {
7741         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7742             !wpa_s->p2p_in_provisioning)
7743                 return 0; /* not P2P client operation */
7744
7745         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7746                    "session overlap");
7747         if (wpa_s != wpa_s->p2pdev)
7748                 wpa_msg_ctrl(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_OVERLAP);
7749         wpas_p2p_group_formation_failed(wpa_s, 0);
7750         return 1;
7751 }
7752
7753
7754 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7755 {
7756         struct wpa_supplicant *wpa_s = eloop_ctx;
7757         wpas_p2p_notif_pbc_overlap(wpa_s);
7758 }
7759
7760
7761 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7762                                   enum wpas_p2p_channel_update_trig trig)
7763 {
7764         struct p2p_channels chan, cli_chan;
7765         struct wpa_used_freq_data *freqs = NULL;
7766         unsigned int num = wpa_s->num_multichan_concurrent;
7767
7768         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7769                 return;
7770
7771         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7772         if (!freqs)
7773                 return;
7774
7775         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7776
7777         os_memset(&chan, 0, sizeof(chan));
7778         os_memset(&cli_chan, 0, sizeof(cli_chan));
7779         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7780                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7781                            "channel list");
7782                 return;
7783         }
7784
7785         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7786
7787         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7788
7789         /*
7790          * The used frequencies map changed, so it is possible that a GO is
7791          * using a channel that is no longer valid for P2P use. It is also
7792          * possible that due to policy consideration, it would be preferable to
7793          * move it to a frequency already used by other station interfaces.
7794          */
7795         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7796
7797         os_free(freqs);
7798 }
7799
7800
7801 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7802                                      struct wpa_scan_results *scan_res)
7803 {
7804         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7805 }
7806
7807
7808 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7809 {
7810         struct wpa_global *global = wpa_s->global;
7811         int found = 0;
7812         const u8 *peer;
7813
7814         if (global->p2p == NULL)
7815                 return -1;
7816
7817         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7818
7819         if (wpa_s->pending_interface_name[0] &&
7820             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7821                 found = 1;
7822
7823         peer = p2p_get_go_neg_peer(global->p2p);
7824         if (peer) {
7825                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7826                            MACSTR, MAC2STR(peer));
7827                 p2p_unauthorize(global->p2p, peer);
7828                 found = 1;
7829         }
7830
7831         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7832                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7833                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7834                 found = 1;
7835         }
7836
7837         if (wpa_s->pending_pd_before_join) {
7838                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7839                 wpa_s->pending_pd_before_join = 0;
7840                 found = 1;
7841         }
7842
7843         wpas_p2p_stop_find(wpa_s);
7844
7845         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7846                 if (wpa_s == global->p2p_group_formation &&
7847                     (wpa_s->p2p_in_provisioning ||
7848                      wpa_s->parent->pending_interface_type ==
7849                      WPA_IF_P2P_CLIENT)) {
7850                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7851                                    "formation found - cancelling",
7852                                    wpa_s->ifname);
7853                         found = 1;
7854                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7855                                              wpa_s->p2pdev, NULL);
7856                         if (wpa_s->p2p_in_provisioning) {
7857                                 wpas_group_formation_completed(wpa_s, 0, 0);
7858                                 break;
7859                         }
7860                         wpas_p2p_group_delete(wpa_s,
7861                                               P2P_GROUP_REMOVAL_REQUESTED);
7862                         break;
7863                 } else if (wpa_s->p2p_in_invitation) {
7864                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7865                                    wpa_s->ifname);
7866                         found = 1;
7867                         wpas_p2p_group_formation_failed(wpa_s, 0);
7868                         break;
7869                 }
7870         }
7871
7872         if (!found) {
7873                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7874                 return -1;
7875         }
7876
7877         return 0;
7878 }
7879
7880
7881 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7882 {
7883         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7884                 return;
7885
7886         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7887                    "being available anymore");
7888         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7889 }
7890
7891
7892 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7893                                    int freq_24, int freq_5, int freq_overall)
7894 {
7895         struct p2p_data *p2p = wpa_s->global->p2p;
7896         if (p2p == NULL)
7897                 return;
7898         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7899 }
7900
7901
7902 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7903 {
7904         u8 peer[ETH_ALEN];
7905         struct p2p_data *p2p = wpa_s->global->p2p;
7906
7907         if (p2p == NULL)
7908                 return -1;
7909
7910         if (hwaddr_aton(addr, peer))
7911                 return -1;
7912
7913         return p2p_unauthorize(p2p, peer);
7914 }
7915
7916
7917 /**
7918  * wpas_p2p_disconnect - Disconnect from a P2P Group
7919  * @wpa_s: Pointer to wpa_supplicant data
7920  * Returns: 0 on success, -1 on failure
7921  *
7922  * This can be used to disconnect from a group in which the local end is a P2P
7923  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7924  * virtual network interface was created for this group, that interface will be
7925  * removed. Otherwise, only the configured P2P group network will be removed
7926  * from the interface.
7927  */
7928 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7929 {
7930
7931         if (wpa_s == NULL)
7932                 return -1;
7933
7934         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7935                 -1 : 0;
7936 }
7937
7938
7939 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7940 {
7941         int ret;
7942
7943         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7944                 return 0;
7945
7946         ret = p2p_in_progress(wpa_s->global->p2p);
7947         if (ret == 0) {
7948                 /*
7949                  * Check whether there is an ongoing WPS provisioning step (or
7950                  * other parts of group formation) on another interface since
7951                  * p2p_in_progress() does not report this to avoid issues for
7952                  * scans during such provisioning step.
7953                  */
7954                 if (wpa_s->global->p2p_group_formation &&
7955                     wpa_s->global->p2p_group_formation != wpa_s) {
7956                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7957                                 "in group formation",
7958                                 wpa_s->global->p2p_group_formation->ifname);
7959                         ret = 1;
7960                 }
7961         }
7962
7963         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7964                 struct os_reltime now;
7965                 os_get_reltime(&now);
7966                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7967                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7968                         /* Wait for the first client has expired */
7969                         wpa_s->global->p2p_go_wait_client.sec = 0;
7970                 } else {
7971                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7972                         ret = 1;
7973                 }
7974         }
7975
7976         return ret;
7977 }
7978
7979
7980 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7981                               struct wpa_ssid *ssid)
7982 {
7983         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7984             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7985                                  wpa_s->p2pdev, NULL) > 0) {
7986                 /**
7987                  * Remove the network by scheduling the group formation
7988                  * timeout to happen immediately. The teardown code
7989                  * needs to be scheduled to run asynch later so that we
7990                  * don't delete data from under ourselves unexpectedly.
7991                  * Calling wpas_p2p_group_formation_timeout directly
7992                  * causes a series of crashes in WPS failure scenarios.
7993                  */
7994                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7995                            "P2P group network getting removed");
7996                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7997                                        wpa_s->p2pdev, NULL);
7998         }
7999 }
8000
8001
8002 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
8003                                           const u8 *addr, const u8 *ssid,
8004                                           size_t ssid_len)
8005 {
8006         struct wpa_ssid *s;
8007         size_t i;
8008
8009         for (s = wpa_s->conf->ssid; s; s = s->next) {
8010                 if (s->disabled != 2)
8011                         continue;
8012                 if (ssid &&
8013                     (ssid_len != s->ssid_len ||
8014                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
8015                         continue;
8016                 if (addr == NULL) {
8017                         if (s->mode == WPAS_MODE_P2P_GO)
8018                                 return s;
8019                         continue;
8020                 }
8021                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
8022                         return s; /* peer is GO in the persistent group */
8023                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
8024                         continue;
8025                 for (i = 0; i < s->num_p2p_clients; i++) {
8026                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
8027                                       addr, ETH_ALEN) == 0)
8028                                 return s; /* peer is P2P client in persistent
8029                                            * group */
8030                 }
8031         }
8032
8033         return NULL;
8034 }
8035
8036
8037 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
8038                                        const u8 *addr)
8039 {
8040         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
8041                                  wpa_s->p2pdev, NULL) > 0) {
8042                 /*
8043                  * This can happen if WPS provisioning step is not terminated
8044                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
8045                  * peer was able to connect, there is no need to time out group
8046                  * formation after this, though. In addition, this is used with
8047                  * the initial connection wait on the GO as a separate formation
8048                  * timeout and as such, expected to be hit after the initial WPS
8049                  * provisioning step.
8050                  */
8051                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
8052
8053                 if (!wpa_s->p2p_go_group_formation_completed &&
8054                     !wpa_s->group_formation_reported) {
8055                         /*
8056                          * GO has not yet notified group formation success since
8057                          * the WPS step was not completed cleanly. Do that
8058                          * notification now since the P2P Client was able to
8059                          * connect and as such, must have received the
8060                          * credential from the WPS step.
8061                          */
8062                         if (wpa_s->global->p2p)
8063                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
8064                         wpas_group_formation_completed(wpa_s, 1, 0);
8065                 }
8066         }
8067         if (!wpa_s->p2p_go_group_formation_completed) {
8068                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
8069                 wpa_s->p2p_go_group_formation_completed = 1;
8070                 wpa_s->global->p2p_group_formation = NULL;
8071                 wpa_s->p2p_in_provisioning = 0;
8072                 wpa_s->p2p_in_invitation = 0;
8073         }
8074         wpa_s->global->p2p_go_wait_client.sec = 0;
8075         if (addr == NULL)
8076                 return;
8077         wpas_p2p_add_persistent_group_client(wpa_s, addr);
8078 }
8079
8080
8081 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
8082                                        int group_added)
8083 {
8084         struct wpa_supplicant *group = wpa_s;
8085         int ret = 0;
8086
8087         if (wpa_s->global->p2p_group_formation)
8088                 group = wpa_s->global->p2p_group_formation;
8089         wpa_s = wpa_s->global->p2p_init_wpa_s;
8090         offchannel_send_action_done(wpa_s);
8091         if (group_added)
8092                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
8093         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
8094         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
8095                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
8096                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
8097                          wpa_s->p2p_go_vht_center_freq2,
8098                          wpa_s->p2p_persistent_id,
8099                          wpa_s->p2p_pd_before_go_neg,
8100                          wpa_s->p2p_go_ht40,
8101                          wpa_s->p2p_go_vht,
8102                          wpa_s->p2p_go_max_oper_chwidth,
8103                          wpa_s->p2p_go_he, NULL, 0);
8104         return ret;
8105 }
8106
8107
8108 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
8109 {
8110         int res;
8111
8112         if (!wpa_s->p2p_fallback_to_go_neg ||
8113             wpa_s->p2p_in_provisioning <= 5)
8114                 return 0;
8115
8116         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
8117                 return 0; /* peer operating as a GO */
8118
8119         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
8120                 "fallback to GO Negotiation");
8121         wpa_msg_global(wpa_s->p2pdev, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
8122                        "reason=GO-not-found");
8123         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
8124
8125         return res == 1 ? 2 : 1;
8126 }
8127
8128
8129 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
8130 {
8131         struct wpa_supplicant *ifs;
8132
8133         if (wpa_s->wpa_state > WPA_SCANNING) {
8134                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
8135                         "concurrent operation",
8136                         wpa_s->conf->p2p_search_delay);
8137                 return wpa_s->conf->p2p_search_delay;
8138         }
8139
8140         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
8141                          radio_list) {
8142                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
8143                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
8144                                 "delay due to concurrent operation on "
8145                                 "interface %s",
8146                                 wpa_s->conf->p2p_search_delay,
8147                                 ifs->ifname);
8148                         return wpa_s->conf->p2p_search_delay;
8149                 }
8150         }
8151
8152         return 0;
8153 }
8154
8155
8156 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
8157                                      struct wpa_ssid *s, const u8 *addr,
8158                                      int iface_addr)
8159 {
8160         struct psk_list_entry *psk, *tmp;
8161         int changed = 0;
8162
8163         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
8164                               list) {
8165                 if ((iface_addr && !psk->p2p &&
8166                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
8167                     (!iface_addr && psk->p2p &&
8168                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
8169                         wpa_dbg(wpa_s, MSG_DEBUG,
8170                                 "P2P: Remove persistent group PSK list entry for "
8171                                 MACSTR " p2p=%u",
8172                                 MAC2STR(psk->addr), psk->p2p);
8173                         dl_list_del(&psk->list);
8174                         os_free(psk);
8175                         changed++;
8176                 }
8177         }
8178
8179         return changed;
8180 }
8181
8182
8183 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
8184                          const u8 *p2p_dev_addr,
8185                          const u8 *psk, size_t psk_len)
8186 {
8187         struct wpa_ssid *ssid = wpa_s->current_ssid;
8188         struct wpa_ssid *persistent;
8189         struct psk_list_entry *p, *last;
8190
8191         if (psk_len != sizeof(p->psk))
8192                 return;
8193
8194         if (p2p_dev_addr) {
8195                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
8196                         " p2p_dev_addr=" MACSTR,
8197                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
8198                 if (is_zero_ether_addr(p2p_dev_addr))
8199                         p2p_dev_addr = NULL;
8200         } else {
8201                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
8202                         MAC2STR(mac_addr));
8203         }
8204
8205         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
8206                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
8207                 /* To be added to persistent group once created */
8208                 if (wpa_s->global->add_psk == NULL) {
8209                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
8210                         if (wpa_s->global->add_psk == NULL)
8211                                 return;
8212                 }
8213                 p = wpa_s->global->add_psk;
8214                 if (p2p_dev_addr) {
8215                         p->p2p = 1;
8216                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
8217                 } else {
8218                         p->p2p = 0;
8219                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
8220                 }
8221                 os_memcpy(p->psk, psk, psk_len);
8222                 return;
8223         }
8224
8225         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
8226                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
8227                 return;
8228         }
8229
8230         persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
8231                                              ssid->ssid_len);
8232         if (!persistent) {
8233                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
8234                 return;
8235         }
8236
8237         p = os_zalloc(sizeof(*p));
8238         if (p == NULL)
8239                 return;
8240         if (p2p_dev_addr) {
8241                 p->p2p = 1;
8242                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
8243         } else {
8244                 p->p2p = 0;
8245                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
8246         }
8247         os_memcpy(p->psk, psk, psk_len);
8248
8249         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
8250             (last = dl_list_last(&persistent->psk_list,
8251                                  struct psk_list_entry, list))) {
8252                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
8253                         MACSTR " (p2p=%u) to make room for a new one",
8254                         MAC2STR(last->addr), last->p2p);
8255                 dl_list_del(&last->list);
8256                 os_free(last);
8257         }
8258
8259         wpas_p2p_remove_psk_entry(wpa_s->p2pdev, persistent,
8260                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
8261                                   p2p_dev_addr == NULL);
8262         if (p2p_dev_addr) {
8263                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
8264                         MACSTR, MAC2STR(p2p_dev_addr));
8265         } else {
8266                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
8267                         MAC2STR(mac_addr));
8268         }
8269         dl_list_add(&persistent->psk_list, &p->list);
8270
8271         if (wpa_s->p2pdev->conf->update_config &&
8272             wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
8273                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
8274 }
8275
8276
8277 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
8278                                 struct wpa_ssid *s, const u8 *addr,
8279                                 int iface_addr)
8280 {
8281         int res;
8282
8283         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
8284         if (res > 0 && wpa_s->conf->update_config &&
8285             wpa_config_write(wpa_s->confname, wpa_s->conf))
8286                 wpa_dbg(wpa_s, MSG_DEBUG,
8287                         "P2P: Failed to update configuration");
8288 }
8289
8290
8291 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
8292                                       const u8 *peer, int iface_addr)
8293 {
8294         struct hostapd_data *hapd;
8295         struct hostapd_wpa_psk *psk, *prev, *rem;
8296         struct sta_info *sta;
8297
8298         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
8299             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
8300                 return;
8301
8302         /* Remove per-station PSK entry */
8303         hapd = wpa_s->ap_iface->bss[0];
8304         prev = NULL;
8305         psk = hapd->conf->ssid.wpa_psk;
8306         while (psk) {
8307                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
8308                     (!iface_addr &&
8309                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
8310                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
8311                                 MACSTR " iface_addr=%d",
8312                                 MAC2STR(peer), iface_addr);
8313                         if (prev)
8314                                 prev->next = psk->next;
8315                         else
8316                                 hapd->conf->ssid.wpa_psk = psk->next;
8317                         rem = psk;
8318                         psk = psk->next;
8319                         os_free(rem);
8320                 } else {
8321                         prev = psk;
8322                         psk = psk->next;
8323                 }
8324         }
8325
8326         /* Disconnect from group */
8327         if (iface_addr)
8328                 sta = ap_get_sta(hapd, peer);
8329         else
8330                 sta = ap_get_sta_p2p(hapd, peer);
8331         if (sta) {
8332                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
8333                         " (iface_addr=%d) from group",
8334                         MAC2STR(peer), iface_addr);
8335                 hostapd_drv_sta_deauth(hapd, sta->addr,
8336                                        WLAN_REASON_DEAUTH_LEAVING);
8337                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
8338         }
8339 }
8340
8341
8342 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
8343                             int iface_addr)
8344 {
8345         struct wpa_ssid *s;
8346         struct wpa_supplicant *w;
8347         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
8348
8349         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
8350
8351         /* Remove from any persistent group */
8352         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
8353                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8354                         continue;
8355                 if (!iface_addr)
8356                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
8357                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
8358         }
8359
8360         /* Remove from any operating group */
8361         for (w = wpa_s->global->ifaces; w; w = w->next)
8362                 wpas_p2p_remove_client_go(w, peer, iface_addr);
8363 }
8364
8365
8366 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8367 {
8368         struct wpa_supplicant *wpa_s = eloop_ctx;
8369         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8370 }
8371
8372
8373 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8374 {
8375         struct wpa_supplicant *wpa_s = eloop_ctx;
8376
8377         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8378         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8379 }
8380
8381
8382 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8383                                         struct wpa_ssid *ssid)
8384 {
8385         struct wpa_supplicant *iface;
8386
8387         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8388                 if (!iface->current_ssid ||
8389                     iface->current_ssid->frequency == freq ||
8390                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8391                      !iface->current_ssid->p2p_group))
8392                         continue;
8393
8394                 /* Remove the connection with least priority */
8395                 if (!wpas_is_p2p_prioritized(iface)) {
8396                         /* STA connection has priority over existing
8397                          * P2P connection, so remove the interface. */
8398                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8399                         eloop_register_timeout(0, 0,
8400                                                wpas_p2p_group_freq_conflict,
8401                                                iface, NULL);
8402                         /* If connection in progress is P2P connection, do not
8403                          * proceed for the connection. */
8404                         if (wpa_s == iface)
8405                                 return -1;
8406                         else
8407                                 return 0;
8408                 } else {
8409                         /* P2P connection has priority, disable the STA network
8410                          */
8411                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
8412                                                        ssid);
8413                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8414                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8415                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8416                                   ETH_ALEN);
8417                         /* If P2P connection is in progress, continue
8418                          * connecting...*/
8419                         if (wpa_s == iface)
8420                                 return 0;
8421                         else
8422                                 return -1;
8423                 }
8424         }
8425
8426         return 0;
8427 }
8428
8429
8430 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8431 {
8432         struct wpa_ssid *ssid = wpa_s->current_ssid;
8433
8434         if (ssid == NULL || !ssid->p2p_group)
8435                 return 0;
8436
8437         if (wpa_s->p2p_last_4way_hs_fail &&
8438             wpa_s->p2p_last_4way_hs_fail == ssid) {
8439                 u8 go_dev_addr[ETH_ALEN];
8440                 struct wpa_ssid *persistent;
8441
8442                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8443                                               ssid->ssid,
8444                                               ssid->ssid_len) <= 0) {
8445                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8446                         goto disconnect;
8447                 }
8448
8449                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8450                         MACSTR, MAC2STR(go_dev_addr));
8451                 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, go_dev_addr,
8452                                                      ssid->ssid,
8453                                                      ssid->ssid_len);
8454                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8455                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8456                         goto disconnect;
8457                 }
8458                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
8459                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8460                                persistent->id);
8461         disconnect:
8462                 wpa_s->p2p_last_4way_hs_fail = NULL;
8463                 /*
8464                  * Remove the group from a timeout to avoid issues with caller
8465                  * continuing to use the interface if this is on a P2P group
8466                  * interface.
8467                  */
8468                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8469                                        wpa_s, NULL);
8470                 return 1;
8471         }
8472
8473         wpa_s->p2p_last_4way_hs_fail = ssid;
8474         return 0;
8475 }
8476
8477
8478 #ifdef CONFIG_WPS_NFC
8479
8480 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8481                                              struct wpabuf *p2p)
8482 {
8483         struct wpabuf *ret;
8484         size_t wsc_len;
8485
8486         if (p2p == NULL) {
8487                 wpabuf_free(wsc);
8488                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8489                 return NULL;
8490         }
8491
8492         wsc_len = wsc ? wpabuf_len(wsc) : 0;
8493         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8494         if (ret == NULL) {
8495                 wpabuf_free(wsc);
8496                 wpabuf_free(p2p);
8497                 return NULL;
8498         }
8499
8500         wpabuf_put_be16(ret, wsc_len);
8501         if (wsc)
8502                 wpabuf_put_buf(ret, wsc);
8503         wpabuf_put_be16(ret, wpabuf_len(p2p));
8504         wpabuf_put_buf(ret, p2p);
8505
8506         wpabuf_free(wsc);
8507         wpabuf_free(p2p);
8508         wpa_hexdump_buf(MSG_DEBUG,
8509                         "P2P: Generated NFC connection handover message", ret);
8510
8511         if (ndef && ret) {
8512                 struct wpabuf *tmp;
8513                 tmp = ndef_build_p2p(ret);
8514                 wpabuf_free(ret);
8515                 if (tmp == NULL) {
8516                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8517                         return NULL;
8518                 }
8519                 ret = tmp;
8520         }
8521
8522         return ret;
8523 }
8524
8525
8526 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8527                              struct wpa_ssid **ssid, u8 *go_dev_addr)
8528 {
8529         struct wpa_supplicant *iface;
8530
8531         if (go_dev_addr)
8532                 os_memset(go_dev_addr, 0, ETH_ALEN);
8533         if (ssid)
8534                 *ssid = NULL;
8535         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8536                 if (iface->wpa_state < WPA_ASSOCIATING ||
8537                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8538                     !iface->current_ssid->p2p_group ||
8539                     iface->current_ssid->mode != WPAS_MODE_INFRA)
8540                         continue;
8541                 if (ssid)
8542                         *ssid = iface->current_ssid;
8543                 if (go_dev_addr)
8544                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8545                 return iface->assoc_freq;
8546         }
8547         return 0;
8548 }
8549
8550
8551 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8552                                           int ndef)
8553 {
8554         struct wpabuf *wsc, *p2p;
8555         struct wpa_ssid *ssid;
8556         u8 go_dev_addr[ETH_ALEN];
8557         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8558
8559         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8560                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8561                 return NULL;
8562         }
8563
8564         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8565             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8566                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8567                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8568                 return NULL;
8569         }
8570
8571         if (cli_freq == 0) {
8572                 wsc = wps_build_nfc_handover_req_p2p(
8573                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8574         } else
8575                 wsc = NULL;
8576         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8577                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8578                                          ssid ? ssid->ssid_len : 0);
8579
8580         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8581 }
8582
8583
8584 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8585                                           int ndef, int tag)
8586 {
8587         struct wpabuf *wsc, *p2p;
8588         struct wpa_ssid *ssid;
8589         u8 go_dev_addr[ETH_ALEN];
8590         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8591
8592         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8593                 return NULL;
8594
8595         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8596             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8597                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8598                 return NULL;
8599
8600         if (cli_freq == 0) {
8601                 wsc = wps_build_nfc_handover_sel_p2p(
8602                         wpa_s->parent->wps,
8603                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8604                         DEV_PW_NFC_CONNECTION_HANDOVER,
8605                         wpa_s->conf->wps_nfc_dh_pubkey,
8606                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8607         } else
8608                 wsc = NULL;
8609         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8610                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8611                                          ssid ? ssid->ssid_len : 0);
8612
8613         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8614 }
8615
8616
8617 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8618                                    struct p2p_nfc_params *params)
8619 {
8620         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8621                    "connection handover (freq=%d)",
8622                    params->go_freq);
8623
8624         if (params->go_freq && params->go_ssid_len) {
8625                 wpa_s->p2p_wps_method = WPS_NFC;
8626                 wpa_s->pending_join_wps_method = WPS_NFC;
8627                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8628                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8629                           ETH_ALEN);
8630                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8631                                            params->go_ssid,
8632                                            params->go_ssid_len);
8633         }
8634
8635         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8636                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8637                                 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8638                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8639                                 wpa_s->p2p_go_he,
8640                                 params->go_ssid_len ? params->go_ssid : NULL,
8641                                 params->go_ssid_len);
8642 }
8643
8644
8645 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8646                                   struct p2p_nfc_params *params, int tag)
8647 {
8648         int res, persistent;
8649         struct wpa_ssid *ssid;
8650
8651         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8652                    "connection handover");
8653         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8654                 ssid = wpa_s->current_ssid;
8655                 if (ssid == NULL)
8656                         continue;
8657                 if (ssid->mode != WPAS_MODE_P2P_GO)
8658                         continue;
8659                 if (wpa_s->ap_iface == NULL)
8660                         continue;
8661                 break;
8662         }
8663         if (wpa_s == NULL) {
8664                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8665                 return -1;
8666         }
8667
8668         if (wpa_s->p2pdev->p2p_oob_dev_pw_id !=
8669             DEV_PW_NFC_CONNECTION_HANDOVER &&
8670             !wpa_s->p2pdev->p2p_oob_dev_pw) {
8671                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8672                 return -1;
8673         }
8674         res = wpas_ap_wps_add_nfc_pw(
8675                 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id,
8676                 wpa_s->p2pdev->p2p_oob_dev_pw,
8677                 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ?
8678                 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL);
8679         if (res)
8680                 return res;
8681
8682         if (!tag) {
8683                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8684                 return 0;
8685         }
8686
8687         if (!params->peer ||
8688             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8689                 return 0;
8690
8691         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8692                    " to join", MAC2STR(params->peer->p2p_device_addr));
8693
8694         wpa_s->global->p2p_invite_group = wpa_s;
8695         persistent = ssid->p2p_persistent_group &&
8696                 wpas_p2p_get_persistent(wpa_s->p2pdev,
8697                                         params->peer->p2p_device_addr,
8698                                         ssid->ssid, ssid->ssid_len);
8699         wpa_s->p2pdev->pending_invite_ssid_id = -1;
8700
8701         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8702                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8703                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8704                           wpa_s->global->p2p_dev_addr, persistent, 0,
8705                           wpa_s->p2pdev->p2p_oob_dev_pw_id);
8706 }
8707
8708
8709 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8710                                     struct p2p_nfc_params *params,
8711                                     int forced_freq)
8712 {
8713         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8714                    "connection handover");
8715         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8716                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8717                                 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8718                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8719                                 wpa_s->p2p_go_he, NULL, 0);
8720 }
8721
8722
8723 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8724                                     struct p2p_nfc_params *params,
8725                                     int forced_freq)
8726 {
8727         int res;
8728
8729         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8730                    "connection handover");
8731         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8732                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8733                                forced_freq, wpa_s->p2p_go_vht_center_freq2,
8734                                -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8735                                wpa_s->p2p_go_he, NULL, 0);
8736         if (res)
8737                 return res;
8738
8739         res = wpas_p2p_listen(wpa_s, 60);
8740         if (res) {
8741                 p2p_unauthorize(wpa_s->global->p2p,
8742                                 params->peer->p2p_device_addr);
8743         }
8744
8745         return res;
8746 }
8747
8748
8749 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8750                                             const struct wpabuf *data,
8751                                             int sel, int tag, int forced_freq)
8752 {
8753         const u8 *pos, *end;
8754         u16 len, id;
8755         struct p2p_nfc_params params;
8756         int res;
8757
8758         os_memset(&params, 0, sizeof(params));
8759         params.sel = sel;
8760
8761         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8762
8763         pos = wpabuf_head(data);
8764         end = pos + wpabuf_len(data);
8765
8766         if (end - pos < 2) {
8767                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8768                            "attributes");
8769                 return -1;
8770         }
8771         len = WPA_GET_BE16(pos);
8772         pos += 2;
8773         if (len > end - pos) {
8774                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8775                            "attributes");
8776                 return -1;
8777         }
8778         params.wsc_attr = pos;
8779         params.wsc_len = len;
8780         pos += len;
8781
8782         if (end - pos < 2) {
8783                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8784                            "attributes");
8785                 return -1;
8786         }
8787         len = WPA_GET_BE16(pos);
8788         pos += 2;
8789         if (len > end - pos) {
8790                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8791                            "attributes");
8792                 return -1;
8793         }
8794         params.p2p_attr = pos;
8795         params.p2p_len = len;
8796         pos += len;
8797
8798         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8799                     params.wsc_attr, params.wsc_len);
8800         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8801                     params.p2p_attr, params.p2p_len);
8802         if (pos < end) {
8803                 wpa_hexdump(MSG_DEBUG,
8804                             "P2P: Ignored extra data after P2P attributes",
8805                             pos, end - pos);
8806         }
8807
8808         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8809         if (res)
8810                 return res;
8811
8812         if (params.next_step == NO_ACTION)
8813                 return 0;
8814
8815         if (params.next_step == BOTH_GO) {
8816                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8817                         MAC2STR(params.peer->p2p_device_addr));
8818                 return 0;
8819         }
8820
8821         if (params.next_step == PEER_CLIENT) {
8822                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8823                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8824                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8825                                 " ssid=\"%s\"",
8826                                 MAC2STR(params.peer->p2p_device_addr),
8827                                 params.go_freq,
8828                                 MAC2STR(params.go_dev_addr),
8829                                 wpa_ssid_txt(params.go_ssid,
8830                                              params.go_ssid_len));
8831                 } else {
8832                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8833                                 "peer=" MACSTR " freq=%d",
8834                                 MAC2STR(params.peer->p2p_device_addr),
8835                                 params.go_freq);
8836                 }
8837                 return 0;
8838         }
8839
8840         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8841                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8842                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8843                 return 0;
8844         }
8845
8846         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8847         wpa_s->p2p_oob_dev_pw = NULL;
8848
8849         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8850                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8851                            "received");
8852                 return -1;
8853         }
8854
8855         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8856         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8857         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8858                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8859         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8860                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8861         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8862
8863         if (tag) {
8864                 if (id < 0x10) {
8865                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8866                                    "peer OOB Device Password Id %u", id);
8867                         return -1;
8868                 }
8869                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8870                            "Device Password Id %u", id);
8871                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8872                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8873                                 params.oob_dev_pw_len -
8874                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
8875                 wpa_s->p2p_oob_dev_pw_id = id;
8876                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8877                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8878                         params.oob_dev_pw_len -
8879                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8880                 if (wpa_s->p2p_oob_dev_pw == NULL)
8881                         return -1;
8882
8883                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8884                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8885                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8886                         return -1;
8887         } else {
8888                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8889                            "without Device Password");
8890                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8891         }
8892
8893         switch (params.next_step) {
8894         case NO_ACTION:
8895         case BOTH_GO:
8896         case PEER_CLIENT:
8897                 /* already covered above */
8898                 return 0;
8899         case JOIN_GROUP:
8900                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8901         case AUTH_JOIN:
8902                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8903         case INIT_GO_NEG:
8904                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8905         case RESP_GO_NEG:
8906                 /* TODO: use own OOB Dev Pw */
8907                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8908         }
8909
8910         return -1;
8911 }
8912
8913
8914 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8915                              const struct wpabuf *data, int forced_freq)
8916 {
8917         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8918                 return -1;
8919
8920         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8921 }
8922
8923
8924 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8925                                  const struct wpabuf *req,
8926                                  const struct wpabuf *sel, int forced_freq)
8927 {
8928         struct wpabuf *tmp;
8929         int ret;
8930
8931         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8932                 return -1;
8933
8934         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8935
8936         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8937                           wpabuf_head(req), wpabuf_len(req));
8938         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8939                           wpabuf_head(sel), wpabuf_len(sel));
8940         if (forced_freq)
8941                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8942         tmp = ndef_parse_p2p(init ? sel : req);
8943         if (tmp == NULL) {
8944                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8945                 return -1;
8946         }
8947
8948         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8949                                                forced_freq);
8950         wpabuf_free(tmp);
8951
8952         return ret;
8953 }
8954
8955
8956 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8957 {
8958         const u8 *if_addr;
8959         int go_intent = wpa_s->conf->p2p_go_intent;
8960         struct wpa_supplicant *iface;
8961
8962         if (wpa_s->global->p2p == NULL)
8963                 return -1;
8964
8965         if (!enabled) {
8966                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8967                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8968                 {
8969                         if (!iface->ap_iface)
8970                                 continue;
8971                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8972                 }
8973                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8974                                                  0, NULL);
8975                 if (wpa_s->p2p_nfc_tag_enabled)
8976                         wpas_p2p_remove_pending_group_interface(wpa_s);
8977                 wpa_s->p2p_nfc_tag_enabled = 0;
8978                 return 0;
8979         }
8980
8981         if (wpa_s->global->p2p_disabled)
8982                 return -1;
8983
8984         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8985             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8986             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8987             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8988                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8989                            "to allow static handover cases");
8990                 return -1;
8991         }
8992
8993         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8994
8995         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8996         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8997         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8998         if (wpa_s->p2p_oob_dev_pw == NULL)
8999                 return -1;
9000         wpa_s->p2p_peer_oob_pk_hash_known = 0;
9001
9002         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
9003             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
9004                 /*
9005                  * P2P Group Interface present and the command came on group
9006                  * interface, so enable the token for the current interface.
9007                  */
9008                 wpa_s->create_p2p_iface = 0;
9009         } else {
9010                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
9011         }
9012
9013         if (wpa_s->create_p2p_iface) {
9014                 enum wpa_driver_if_type iftype;
9015                 /* Prepare to add a new interface for the group */
9016                 iftype = WPA_IF_P2P_GROUP;
9017                 if (go_intent == 15)
9018                         iftype = WPA_IF_P2P_GO;
9019                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
9020                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
9021                                    "interface for the group");
9022                         return -1;
9023                 }
9024
9025                 if_addr = wpa_s->pending_interface_addr;
9026         } else if (wpa_s->p2p_mgmt)
9027                 if_addr = wpa_s->parent->own_addr;
9028         else
9029                 if_addr = wpa_s->own_addr;
9030
9031         wpa_s->p2p_nfc_tag_enabled = enabled;
9032
9033         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
9034                 struct hostapd_data *hapd;
9035                 if (iface->ap_iface == NULL)
9036                         continue;
9037                 hapd = iface->ap_iface->bss[0];
9038                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
9039                 hapd->conf->wps_nfc_dh_pubkey =
9040                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
9041                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
9042                 hapd->conf->wps_nfc_dh_privkey =
9043                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
9044                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
9045                 hapd->conf->wps_nfc_dev_pw =
9046                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
9047                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
9048
9049                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
9050                         wpa_dbg(iface, MSG_DEBUG,
9051                                 "P2P: Failed to enable NFC Tag for GO");
9052                 }
9053         }
9054         p2p_set_authorized_oob_dev_pw_id(
9055                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
9056                 if_addr);
9057
9058         return 0;
9059 }
9060
9061 #endif /* CONFIG_WPS_NFC */
9062
9063
9064 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
9065                                              struct wpa_used_freq_data *freqs,
9066                                              unsigned int num)
9067 {
9068         u8 curr_chan, cand, chan;
9069         unsigned int i;
9070
9071         /*
9072          * If possible, optimize the Listen channel to be a channel that is
9073          * already used by one of the other interfaces.
9074          */
9075         if (!wpa_s->conf->p2p_optimize_listen_chan)
9076                 return;
9077
9078         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
9079                 return;
9080
9081         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
9082         for (i = 0, cand = 0; i < num; i++) {
9083                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
9084                 if (curr_chan == chan) {
9085                         cand = 0;
9086                         break;
9087                 }
9088
9089                 if (chan == 1 || chan == 6 || chan == 11)
9090                         cand = chan;
9091         }
9092
9093         if (cand) {
9094                 wpa_dbg(wpa_s, MSG_DEBUG,
9095                         "P2P: Update Listen channel to %u based on operating channel",
9096                         cand);
9097                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
9098         }
9099 }
9100
9101
9102 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
9103 {
9104         struct hostapd_config *conf;
9105         struct p2p_go_neg_results params;
9106         struct csa_settings csa_settings;
9107         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
9108         int old_freq = current_ssid->frequency;
9109         int ret;
9110
9111         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
9112                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
9113                 return -1;
9114         }
9115
9116         /*
9117          * TODO: This function may not always work correctly. For example,
9118          * when we have a running GO and a BSS on a DFS channel.
9119          */
9120         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, 0, NULL)) {
9121                 wpa_dbg(wpa_s, MSG_DEBUG,
9122                         "P2P CSA: Failed to select new frequency for GO");
9123                 return -1;
9124         }
9125
9126         if (current_ssid->frequency == params.freq) {
9127                 wpa_dbg(wpa_s, MSG_DEBUG,
9128                         "P2P CSA: Selected same frequency - not moving GO");
9129                 return 0;
9130         }
9131
9132         conf = hostapd_config_defaults();
9133         if (!conf) {
9134                 wpa_dbg(wpa_s, MSG_DEBUG,
9135                         "P2P CSA: Failed to allocate default config");
9136                 return -1;
9137         }
9138
9139         current_ssid->frequency = params.freq;
9140         if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
9141                 wpa_dbg(wpa_s, MSG_DEBUG,
9142                         "P2P CSA: Failed to create new GO config");
9143                 ret = -1;
9144                 goto out;
9145         }
9146
9147         if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
9148                 wpa_dbg(wpa_s, MSG_DEBUG,
9149                         "P2P CSA: CSA to a different band is not supported");
9150                 ret = -1;
9151                 goto out;
9152         }
9153
9154         os_memset(&csa_settings, 0, sizeof(csa_settings));
9155         csa_settings.cs_count = P2P_GO_CSA_COUNT;
9156         csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
9157         csa_settings.freq_params.freq = params.freq;
9158         csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
9159         csa_settings.freq_params.ht_enabled = conf->ieee80211n;
9160         csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
9161
9162         if (conf->ieee80211ac) {
9163                 int freq1 = 0, freq2 = 0;
9164                 u8 chan, opclass;
9165
9166                 if (ieee80211_freq_to_channel_ext(params.freq,
9167                                                   conf->secondary_channel,
9168                                                   conf->vht_oper_chwidth,
9169                                                   &opclass, &chan) ==
9170                     NUM_HOSTAPD_MODES) {
9171                         wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
9172                         ret = -1;
9173                         goto out;
9174                 }
9175
9176                 if (conf->vht_oper_centr_freq_seg0_idx)
9177                         freq1 = ieee80211_chan_to_freq(
9178                                 NULL, opclass,
9179                                 conf->vht_oper_centr_freq_seg0_idx);
9180
9181                 if (conf->vht_oper_centr_freq_seg1_idx)
9182                         freq2 = ieee80211_chan_to_freq(
9183                                 NULL, opclass,
9184                                 conf->vht_oper_centr_freq_seg1_idx);
9185
9186                 if (freq1 < 0 || freq2 < 0) {
9187                         wpa_dbg(wpa_s, MSG_DEBUG,
9188                                 "P2P CSA: Selected invalid VHT center freqs");
9189                         ret = -1;
9190                         goto out;
9191                 }
9192
9193                 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
9194                 csa_settings.freq_params.center_freq1 = freq1;
9195                 csa_settings.freq_params.center_freq2 = freq2;
9196
9197                 switch (conf->vht_oper_chwidth) {
9198                 case CHANWIDTH_80MHZ:
9199                 case CHANWIDTH_80P80MHZ:
9200                         csa_settings.freq_params.bandwidth = 80;
9201                         break;
9202                 case CHANWIDTH_160MHZ:
9203                         csa_settings.freq_params.bandwidth = 160;
9204                         break;
9205                 }
9206         }
9207
9208         ret = ap_switch_channel(wpa_s, &csa_settings);
9209 out:
9210         current_ssid->frequency = old_freq;
9211         hostapd_config_free(conf);
9212         return ret;
9213 }
9214
9215
9216 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
9217 {
9218         struct p2p_go_neg_results params;
9219         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
9220
9221         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
9222
9223         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
9224                 current_ssid->frequency);
9225
9226         /* Stop the AP functionality */
9227         /* TODO: Should do this in a way that does not indicated to possible
9228          * P2P Clients in the group that the group is terminated. */
9229         wpa_supplicant_ap_deinit(wpa_s);
9230
9231         /* Reselect the GO frequency */
9232         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, 0, NULL)) {
9233                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
9234                 wpas_p2p_group_delete(wpa_s,
9235                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
9236                 return;
9237         }
9238         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
9239                 params.freq);
9240
9241         if (params.freq &&
9242             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
9243                 wpa_printf(MSG_DEBUG,
9244                            "P2P: Selected freq (%u MHz) is not valid for P2P",
9245                            params.freq);
9246                 wpas_p2p_group_delete(wpa_s,
9247                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
9248                 return;
9249         }
9250
9251         /* Update the frequency */
9252         current_ssid->frequency = params.freq;
9253         wpa_s->connect_without_scan = current_ssid;
9254         wpa_s->reassociate = 1;
9255         wpa_s->disconnected = 0;
9256         wpa_supplicant_req_scan(wpa_s, 0, 0);
9257 }
9258
9259
9260 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
9261 {
9262         struct wpa_supplicant *wpa_s = eloop_ctx;
9263
9264         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
9265                 return;
9266
9267         wpas_p2p_go_update_common_freqs(wpa_s);
9268
9269         /* Do not move GO in the middle of a CSA */
9270         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9271                 wpa_printf(MSG_DEBUG,
9272                            "P2P: CSA is in progress - not moving GO");
9273                 return;
9274         }
9275
9276         /*
9277          * First, try a channel switch flow. If it is not supported or fails,
9278          * take down the GO and bring it up again.
9279          */
9280         if (wpas_p2p_move_go_csa(wpa_s) < 0)
9281                 wpas_p2p_move_go_no_csa(wpa_s);
9282 }
9283
9284
9285 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
9286 {
9287         struct wpa_supplicant *wpa_s = eloop_ctx;
9288         struct wpa_used_freq_data *freqs = NULL;
9289         unsigned int num = wpa_s->num_multichan_concurrent;
9290
9291         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
9292         if (!freqs)
9293                 return;
9294
9295         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
9296
9297         /* Previous attempt to move a GO was not possible -- try again. */
9298         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
9299                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
9300
9301         os_free(freqs);
9302 }
9303
9304
9305 /*
9306  * Consider moving a GO from its currently used frequency:
9307  * 1. It is possible that due to regulatory consideration the frequency
9308  *    can no longer be used and there is a need to evacuate the GO.
9309  * 2. It is possible that due to MCC considerations, it would be preferable
9310  *    to move the GO to a channel that is currently used by some other
9311  *    station interface.
9312  *
9313  * In case a frequency that became invalid is once again valid, cancel a
9314  * previously initiated GO frequency change.
9315  */
9316 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
9317                                             struct wpa_used_freq_data *freqs,
9318                                             unsigned int num)
9319 {
9320         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
9321         unsigned int timeout;
9322         int freq;
9323         int dfs_offload;
9324
9325         wpas_p2p_go_update_common_freqs(wpa_s);
9326
9327         freq = wpa_s->current_ssid->frequency;
9328         dfs_offload = (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
9329                 ieee80211_is_dfs(freq, wpa_s->hw.modes, wpa_s->hw.num_modes);
9330         for (i = 0, invalid_freq = 0; i < num; i++) {
9331                 if (freqs[i].freq == freq) {
9332                         flags = freqs[i].flags;
9333
9334                         /* The channel is invalid, must change it */
9335                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
9336                             !dfs_offload) {
9337                                 wpa_dbg(wpa_s, MSG_DEBUG,
9338                                         "P2P: Freq=%d MHz no longer valid for GO",
9339                                         freq);
9340                                 invalid_freq = 1;
9341                         }
9342                 } else if (freqs[i].flags == 0) {
9343                         /* Freq is not used by any other station interface */
9344                         continue;
9345                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
9346                                                freqs[i].freq) && !dfs_offload) {
9347                         /* Freq is not valid for P2P use cases */
9348                         continue;
9349                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9350                            P2P_GO_FREQ_MOVE_SCM) {
9351                         policy_move = 1;
9352                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9353                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
9354                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9355                         policy_move = 1;
9356                 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
9357                             P2P_GO_FREQ_MOVE_SCM_ECSA) &&
9358                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9359                         if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
9360                                 policy_move = 1;
9361                         } else if ((wpa_s->drv_flags &
9362                                     WPA_DRIVER_FLAGS_AP_CSA) &&
9363                                    wpas_p2p_go_clients_support_ecsa(wpa_s)) {
9364                                 u8 chan;
9365
9366                                 /*
9367                                  * We do not support CSA between bands, so move
9368                                  * GO only within the same band.
9369                                  */
9370                                 if (wpa_s->ap_iface->current_mode->mode ==
9371                                     ieee80211_freq_to_chan(freqs[i].freq,
9372                                                            &chan))
9373                                         policy_move = 1;
9374                         }
9375                 }
9376         }
9377
9378         wpa_dbg(wpa_s, MSG_DEBUG,
9379                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9380                 invalid_freq, policy_move, flags);
9381
9382         /*
9383          * The channel is valid, or we are going to have a policy move, so
9384          * cancel timeout.
9385          */
9386         if (!invalid_freq || policy_move) {
9387                 wpa_dbg(wpa_s, MSG_DEBUG,
9388                         "P2P: Cancel a GO move from freq=%d MHz", freq);
9389                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9390
9391                 if (wpas_p2p_in_progress(wpa_s)) {
9392                         wpa_dbg(wpa_s, MSG_DEBUG,
9393                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9394                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9395                                              wpa_s, NULL);
9396                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9397                                                wpas_p2p_reconsider_moving_go,
9398                                                wpa_s, NULL);
9399                         return;
9400                 }
9401         }
9402
9403         if (!invalid_freq && (!policy_move || flags != 0)) {
9404                 wpa_dbg(wpa_s, MSG_DEBUG,
9405                         "P2P: Not initiating a GO frequency change");
9406                 return;
9407         }
9408
9409         /*
9410          * Do not consider moving GO if it is in the middle of a CSA. When the
9411          * CSA is finished this flow should be retriggered.
9412          */
9413         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9414                 wpa_dbg(wpa_s, MSG_DEBUG,
9415                         "P2P: Not initiating a GO frequency change - CSA is in progress");
9416                 return;
9417         }
9418
9419         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9420                 timeout = P2P_GO_FREQ_CHANGE_TIME;
9421         else
9422                 timeout = 0;
9423
9424         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9425                 freq, timeout);
9426         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9427         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9428 }
9429
9430
9431 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9432                                          struct wpa_used_freq_data *freqs,
9433                                          unsigned int num,
9434                                          enum wpas_p2p_channel_update_trig trig)
9435 {
9436         struct wpa_supplicant *ifs;
9437
9438         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9439                              NULL);
9440
9441         /*
9442          * Travers all the radio interfaces, and for each GO interface, check
9443          * if there is a need to move the GO from the frequency it is using,
9444          * or in case the frequency is valid again, cancel the evacuation flow.
9445          */
9446         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9447                          radio_list) {
9448                 if (ifs->current_ssid == NULL ||
9449                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9450                         continue;
9451
9452                 /*
9453                  * The GO was just started or completed channel switch, no need
9454                  * to move it.
9455                  */
9456                 if (wpa_s == ifs &&
9457                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9458                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9459                         wpa_dbg(wpa_s, MSG_DEBUG,
9460                                 "P2P: GO move - schedule re-consideration");
9461                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9462                                                wpas_p2p_reconsider_moving_go,
9463                                                wpa_s, NULL);
9464                         continue;
9465                 }
9466
9467                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9468         }
9469 }
9470
9471
9472 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9473 {
9474         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9475                 return;
9476
9477         wpas_p2p_update_channel_list(wpa_s,
9478                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9479 }
9480
9481
9482 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9483 {
9484         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9485                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9486                         "the management interface is being removed");
9487                 wpas_p2p_deinit_global(wpa_s->global);
9488         }
9489 }
9490
9491
9492 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9493 {
9494         if (wpa_s->ap_iface->bss)
9495                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9496         wpas_p2p_group_deinit(wpa_s);
9497 }
9498
9499
9500 int wpas_p2p_lo_start(struct wpa_supplicant *wpa_s, unsigned int freq,
9501                       unsigned int period, unsigned int interval,
9502                       unsigned int count)
9503 {
9504         struct p2p_data *p2p = wpa_s->global->p2p;
9505         u8 *device_types;
9506         size_t dev_types_len;
9507         struct wpabuf *buf;
9508         int ret;
9509
9510         if (wpa_s->p2p_lo_started) {
9511                 wpa_dbg(wpa_s, MSG_DEBUG,
9512                         "P2P Listen offload is already started");
9513                 return 0;
9514         }
9515
9516         if (wpa_s->global->p2p == NULL ||
9517             !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_LISTEN_OFFLOAD)) {
9518                 wpa_printf(MSG_DEBUG, "P2P: Listen offload not supported");
9519                 return -1;
9520         }
9521
9522         if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
9523                 wpa_printf(MSG_ERROR, "P2P: Input channel not supported: %u",
9524                            freq);
9525                 return -1;
9526         }
9527
9528         /* Get device type */
9529         dev_types_len = (wpa_s->conf->num_sec_device_types + 1) *
9530                 WPS_DEV_TYPE_LEN;
9531         device_types = os_malloc(dev_types_len);
9532         if (!device_types)
9533                 return -1;
9534         os_memcpy(device_types, wpa_s->conf->device_type, WPS_DEV_TYPE_LEN);
9535         os_memcpy(&device_types[WPS_DEV_TYPE_LEN], wpa_s->conf->sec_device_type,
9536                   wpa_s->conf->num_sec_device_types * WPS_DEV_TYPE_LEN);
9537
9538         /* Get Probe Response IE(s) */
9539         buf = p2p_build_probe_resp_template(p2p, freq);
9540         if (!buf) {
9541                 os_free(device_types);
9542                 return -1;
9543         }
9544
9545         ret = wpa_drv_p2p_lo_start(wpa_s, freq, period, interval, count,
9546                                    device_types, dev_types_len,
9547                                    wpabuf_mhead_u8(buf), wpabuf_len(buf));
9548         if (ret < 0)
9549                 wpa_dbg(wpa_s, MSG_DEBUG,
9550                         "P2P: Failed to start P2P listen offload");
9551
9552         os_free(device_types);
9553         wpabuf_free(buf);
9554
9555         if (ret == 0) {
9556                 wpa_s->p2p_lo_started = 1;
9557
9558                 /* Stop current P2P listen if any */
9559                 wpas_stop_listen(wpa_s);
9560         }
9561
9562         return ret;
9563 }
9564
9565
9566 int wpas_p2p_lo_stop(struct wpa_supplicant *wpa_s)
9567 {
9568         int ret;
9569
9570         if (!wpa_s->p2p_lo_started)
9571                 return 0;
9572
9573         ret = wpa_drv_p2p_lo_stop(wpa_s);
9574         if (ret < 0)
9575                 wpa_dbg(wpa_s, MSG_DEBUG,
9576                         "P2P: Failed to stop P2P listen offload");
9577
9578         wpa_s->p2p_lo_started = 0;
9579         return ret;
9580 }