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  52  * it is currently using, but is no longer valid for P2P use cases.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  57  * Defines CSA parameters which are used when GO evacuates the no longer valid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         ret = wpa_drv_scan(wpa_s, params);
 311         wpa_scan_free_params(params);
 312         work->ctx = NULL;
 313         if (ret) {
 314                 radio_work_done(work);
 315                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 316                 return;
 317         }
 318
 319         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 320         os_get_reltime(&wpa_s->scan_trigger_time);
 321         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 322         wpa_s->own_scan_requested = 1;
 323         wpa_s->p2p_scan_work = work;
 324 }
 325
 326
 327 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 328                                           int freq)
 329 {
 330         if (wpa_s->global->p2p_24ghz_social_channels &&
 331             (freq == 2412 || freq == 2437 || freq == 2462)) {
 332                 /*
 333                  * Search all social channels regardless of whether these have
 334                  * been disabled for P2P operating channel use to avoid missing
 335                  * peers.
 336                  */
 337                 return 1;
 338         }
 339         return p2p_supported_freq(wpa_s->global->p2p, freq);
 340 }
 341
 342
 343 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 344                          unsigned int num_req_dev_types,
 345                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 346 {
 347         struct wpa_supplicant *wpa_s = ctx;
 348         struct wpa_driver_scan_params *params = NULL;
 349         struct wpabuf *wps_ie, *ies;
 350         unsigned int num_channels = 0;
 351         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 352         size_t ielen;
 353         u8 *n, i;
 354         unsigned int bands;
 355
 356         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 357                 return -1;
 358
 359         if (wpa_s->p2p_scan_work) {
 360                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 361                 return -1;
 362         }
 363
 364         params = os_zalloc(sizeof(*params));
 365         if (params == NULL)
 366                 return -1;
 367
 368         /* P2P Wildcard SSID */
 369         params->num_ssids = 1;
 370         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 371         if (n == NULL)
 372                 goto fail;
 373         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 374         params->ssids[0].ssid = n;
 375         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 376
 377         wpa_s->wps->dev.p2p = 1;
 378         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 379                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 380                                         num_req_dev_types, req_dev_types);
 381         if (wps_ie == NULL)
 382                 goto fail;
 383
 384         switch (type) {
 385         case P2P_SCAN_SOCIAL:
 386                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 387                                           sizeof(int));
 388                 if (params->freqs == NULL)
 389                         goto fail;
 390                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 391                         if (wpas_p2p_search_social_channel(
 392                                     wpa_s, social_channels_freq[i]))
 393                                 params->freqs[num_channels++] =
 394                                         social_channels_freq[i];
 395                 }
 396                 params->freqs[num_channels++] = 0;
 397                 break;
 398         case P2P_SCAN_FULL:
 399                 break;
 400         case P2P_SCAN_SPECIFIC:
 401                 params->freqs = os_calloc(2, sizeof(int));
 402                 if (params->freqs == NULL)
 403                         goto fail;
 404                 params->freqs[0] = freq;
 405                 params->freqs[1] = 0;
 406                 break;
 407         case P2P_SCAN_SOCIAL_PLUS_ONE:
 408                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 409                                           sizeof(int));
 410                 if (params->freqs == NULL)
 411                         goto fail;
 412                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 413                         if (wpas_p2p_search_social_channel(
 414                                     wpa_s, social_channels_freq[i]))
 415                                 params->freqs[num_channels++] =
 416                                         social_channels_freq[i];
 417                 }
 418                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 419                         params->freqs[num_channels++] = freq;
 420                 params->freqs[num_channels++] = 0;
 421                 break;
 422         }
 423
 424         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 425         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 426         if (ies == NULL) {
 427                 wpabuf_free(wps_ie);
 428                 goto fail;
 429         }
 430         wpabuf_put_buf(ies, wps_ie);
 431         wpabuf_free(wps_ie);
 432
 433         bands = wpas_get_bands(wpa_s, params->freqs);
 434         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id, bands);
 435
 436         params->p2p_probe = 1;
 437         n = os_malloc(wpabuf_len(ies));
 438         if (n == NULL) {
 439                 wpabuf_free(ies);
 440                 goto fail;
 441         }
 442         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 443         params->extra_ies = n;
 444         params->extra_ies_len = wpabuf_len(ies);
 445         wpabuf_free(ies);
 446
 447         radio_remove_works(wpa_s, "p2p-scan", 0);
 448         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 449                            params) < 0)
 450                 goto fail;
 451         return 0;
 452
 453 fail:
 454         wpa_scan_free_params(params);
 455         return -1;
 456 }
 457
 458
 459 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 460 {
 461         switch (p2p_group_interface) {
 462         case P2P_GROUP_INTERFACE_PENDING:
 463                 return WPA_IF_P2P_GROUP;
 464         case P2P_GROUP_INTERFACE_GO:
 465                 return WPA_IF_P2P_GO;
 466         case P2P_GROUP_INTERFACE_CLIENT:
 467                 return WPA_IF_P2P_CLIENT;
 468         }
 469
 470         return WPA_IF_P2P_GROUP;
 471 }
 472
 473
 474 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 475                                                   const u8 *ssid,
 476                                                   size_t ssid_len, int *go)
 477 {
 478         struct wpa_ssid *s;
 479
 480         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 481                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 482                         if (s->disabled != 0 || !s->p2p_group ||
 483                             s->ssid_len != ssid_len ||
 484                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 485                                 continue;
 486                         if (s->mode == WPAS_MODE_P2P_GO &&
 487                             s != wpa_s->current_ssid)
 488                                 continue;
 489                         if (go)
 490                                 *go = s->mode == WPAS_MODE_P2P_GO;
 491                         return wpa_s;
 492                 }
 493         }
 494
 495         return NULL;
 496 }
 497
 498
 499 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 500 {
 501         struct wpa_supplicant *wpa_s = eloop_ctx;
 502         wpa_printf(MSG_DEBUG,
 503                    "P2P: Complete previously requested removal of %s",
 504                    wpa_s->ifname);
 505         wpas_p2p_disconnect(wpa_s);
 506 }
 507
 508
 509 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 510                                       struct wpa_supplicant *calling_wpa_s)
 511 {
 512         if (calling_wpa_s == wpa_s && wpa_s &&
 513             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 514                 /*
 515                  * The calling wpa_s instance is going to be removed. Do that
 516                  * from an eloop callback to keep the instance available until
 517                  * the caller has returned. This my be needed, e.g., to provide
 518                  * control interface responses on the per-interface socket.
 519                  */
 520                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 521                                            wpa_s, NULL) < 0)
 522                         return -1;
 523                 return 0;
 524         }
 525
 526         return wpas_p2p_disconnect(wpa_s);
 527 }
 528
 529
 530 /* Determine total number of clients in active groups where we are the GO */
 531 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 532 {
 533         unsigned int count = 0;
 534         struct wpa_ssid *s;
 535
 536         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 537                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 538                         wpa_printf(MSG_DEBUG,
 539                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 540                                    wpa_s, s, s->disabled, s->p2p_group,
 541                                    s->mode);
 542                         if (!s->disabled && s->p2p_group &&
 543                             s->mode == WPAS_MODE_P2P_GO) {
 544                                 count += p2p_get_group_num_members(
 545                                         wpa_s->p2p_group);
 546                         }
 547                 }
 548         }
 549
 550         return count;
 551 }
 552
 553
 554 static unsigned int p2p_is_active_persistent_group(struct wpa_supplicant *wpa_s)
 555 {
 556         return !wpa_s->p2p_mgmt && wpa_s->current_ssid &&
 557                 !wpa_s->current_ssid->disabled &&
 558                 wpa_s->current_ssid->p2p_group &&
 559                 wpa_s->current_ssid->p2p_persistent_group;
 560 }
 561
 562
 563 static unsigned int p2p_is_active_persistent_go(struct wpa_supplicant *wpa_s)
 564 {
 565         return p2p_is_active_persistent_group(wpa_s) &&
 566                 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO;
 567 }
 568
 569
 570 /* Find an interface for a P2P group where we are the GO */
 571 static struct wpa_supplicant *
 572 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 573 {
 574         struct wpa_supplicant *save = NULL;
 575
 576         if (!wpa_s)
 577                 return NULL;
 578
 579         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 580                 if (!p2p_is_active_persistent_go(wpa_s))
 581                         continue;
 582
 583                 /* Prefer a group with connected clients */
 584                 if (p2p_get_group_num_members(wpa_s->p2p_group))
 585                         return wpa_s;
 586                 save = wpa_s;
 587         }
 588
 589         /* No group with connected clients, so pick the one without (if any) */
 590         return save;
 591 }
 592
 593
 594 static unsigned int p2p_is_active_persistent_cli(struct wpa_supplicant *wpa_s)
 595 {
 596         return p2p_is_active_persistent_group(wpa_s) &&
 597                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
 598 }
 599
 600
 601 /* Find an interface for a P2P group where we are the P2P Client */
 602 static struct wpa_supplicant *
 603 wpas_p2p_get_cli_group(struct wpa_supplicant *wpa_s)
 604 {
 605         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 606                 if (p2p_is_active_persistent_cli(wpa_s))
 607                         return wpa_s;
 608         }
 609
 610         return NULL;
 611 }
 612
 613
 614 /* Find a persistent group where we are the GO */
 615 static struct wpa_ssid *
 616 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
 617 {
 618         struct wpa_ssid *s;
 619
 620         for (s = wpa_s->conf->ssid; s; s = s->next) {
 621                 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
 622                         return s;
 623         }
 624
 625         return NULL;
 626 }
 627
 628
 629 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role,
 630                                 unsigned int *force_freq,
 631                                 unsigned int *pref_freq)
 632 {
 633         struct wpa_supplicant *wpa_s = ctx;
 634         struct wpa_ssid *s;
 635         u8 conncap = P2PS_SETUP_NONE;
 636         unsigned int owned_members = 0;
 637         struct wpa_supplicant *go_wpa_s, *cli_wpa_s;
 638         struct wpa_ssid *persistent_go;
 639         int p2p_no_group_iface;
 640         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
 641
 642         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 643
 644         if (force_freq)
 645                 *force_freq = 0;
 646         if (pref_freq)
 647                 *pref_freq = 0;
 648
 649         size = P2P_MAX_PREF_CHANNELS;
 650         if (force_freq && pref_freq &&
 651             !wpas_p2p_setup_freqs(wpa_s, 0, (int *) force_freq,
 652                                   (int *) pref_freq, 0, pref_freq_list, &size))
 653                 wpas_p2p_set_own_freq_preference(wpa_s,
 654                                                  *force_freq ? *force_freq :
 655                                                  *pref_freq);
 656
 657         /*
 658          * For non-concurrent capable devices:
 659          * If persistent_go, then no new.
 660          * If GO, then no client.
 661          * If client, then no GO.
 662          */
 663         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 664         if (go_wpa_s)
 665                 owned_members = p2p_get_group_num_members(go_wpa_s->p2p_group);
 666         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 667         p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s);
 668         cli_wpa_s = wpas_p2p_get_cli_group(wpa_s);
 669
 670         wpa_printf(MSG_DEBUG,
 671                    "P2P: GO(iface)=%p members=%u CLI(iface)=%p persistent(ssid)=%p",
 672                    go_wpa_s, owned_members, cli_wpa_s, persistent_go);
 673
 674         /* If not concurrent, restrict our choices */
 675         if (p2p_no_group_iface) {
 676                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 677
 678                 if (cli_wpa_s)
 679                         return P2PS_SETUP_NONE;
 680
 681                 if (go_wpa_s) {
 682                         if (role == P2PS_SETUP_CLIENT ||
 683                             incoming == P2PS_SETUP_GROUP_OWNER ||
 684                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 685                                 return P2PS_SETUP_NONE;
 686
 687                         return P2PS_SETUP_GROUP_OWNER;
 688                 }
 689
 690                 if (persistent_go) {
 691                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 692                                 if (!incoming)
 693                                         return P2PS_SETUP_GROUP_OWNER |
 694                                                 P2PS_SETUP_CLIENT;
 695                                 if (incoming == P2PS_SETUP_NEW) {
 696                                         u8 r;
 697
 698                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 699                                             (r & 1))
 700                                                 return P2PS_SETUP_CLIENT;
 701                                         return P2PS_SETUP_GROUP_OWNER;
 702                                 }
 703                         }
 704                 }
 705         }
 706
 707         /* If a required role has been specified, handle it here */
 708         if (role && role != P2PS_SETUP_NEW) {
 709                 switch (incoming) {
 710                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 711                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 712                         /*
 713                          * Peer has an active GO, so if the role allows it and
 714                          * we do not have any active roles, become client.
 715                          */
 716                         if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s &&
 717                             !cli_wpa_s)
 718                                 return P2PS_SETUP_CLIENT;
 719
 720                         /* fall through */
 721
 722                 case P2PS_SETUP_NONE:
 723                 case P2PS_SETUP_NEW:
 724                         conncap = role;
 725                         goto grp_owner;
 726
 727                 case P2PS_SETUP_GROUP_OWNER:
 728                         /*
 729                          * Must be a complimentary role - cannot be a client to
 730                          * more than one peer.
 731                          */
 732                         if (incoming == role || cli_wpa_s)
 733                                 return P2PS_SETUP_NONE;
 734
 735                         return P2PS_SETUP_CLIENT;
 736
 737                 case P2PS_SETUP_CLIENT:
 738                         /* Must be a complimentary role */
 739                         if (incoming != role) {
 740                                 conncap = P2PS_SETUP_GROUP_OWNER;
 741                                 goto grp_owner;
 742                         }
 743
 744                 default:
 745                         return P2PS_SETUP_NONE;
 746                 }
 747         }
 748
 749         /*
 750          * For now, we only will support ownership of one group, and being a
 751          * client of one group. Therefore, if we have either an existing GO
 752          * group, or an existing client group, we will not do a new GO
 753          * negotiation, but rather try to re-use the existing groups.
 754          */
 755         switch (incoming) {
 756         case P2PS_SETUP_NONE:
 757         case P2PS_SETUP_NEW:
 758                 if (cli_wpa_s)
 759                         conncap = P2PS_SETUP_GROUP_OWNER;
 760                 else if (!owned_members)
 761                         conncap = P2PS_SETUP_NEW;
 762                 else if (incoming == P2PS_SETUP_NONE)
 763                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 764                 else
 765                         conncap = P2PS_SETUP_CLIENT;
 766                 break;
 767
 768         case P2PS_SETUP_CLIENT:
 769                 conncap = P2PS_SETUP_GROUP_OWNER;
 770                 break;
 771
 772         case P2PS_SETUP_GROUP_OWNER:
 773                 if (!cli_wpa_s)
 774                         conncap = P2PS_SETUP_CLIENT;
 775                 break;
 776
 777         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 778         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 779                 if (cli_wpa_s)
 780                         conncap = P2PS_SETUP_GROUP_OWNER;
 781                 else {
 782                         u8 r;
 783
 784                         if (os_get_random(&r, sizeof(r)) < 0 ||
 785                             (r & 1))
 786                                 conncap = P2PS_SETUP_CLIENT;
 787                         else
 788                                 conncap = P2PS_SETUP_GROUP_OWNER;
 789                 }
 790                 break;
 791
 792         default:
 793                 return P2PS_SETUP_NONE;
 794         }
 795
 796 grp_owner:
 797         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 798             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 799                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 800                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 801
 802                 s = wpas_p2p_get_persistent_go(wpa_s);
 803                 if (!s && !go_wpa_s && p2p_no_group_iface) {
 804                         p2p_set_intended_addr(wpa_s->global->p2p,
 805                                               wpa_s->p2p_mgmt ?
 806                                               wpa_s->parent->own_addr :
 807                                               wpa_s->own_addr);
 808                 } else if (!s && !go_wpa_s) {
 809                         if (wpas_p2p_add_group_interface(wpa_s,
 810                                                          WPA_IF_P2P_GO) < 0) {
 811                                 wpa_printf(MSG_ERROR,
 812                                            "P2P: Failed to allocate a new interface for the group");
 813                                 return P2PS_SETUP_NONE;
 814                         }
 815                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 816                         p2p_set_intended_addr(wpa_s->global->p2p,
 817                                               wpa_s->pending_interface_addr);
 818                 }
 819         }
 820
 821         return conncap;
 822 }
 823
 824
 825 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 826                                  enum p2p_group_removal_reason removal_reason)
 827 {
 828         struct wpa_ssid *ssid;
 829         char *gtype;
 830         const char *reason;
 831
 832         ssid = wpa_s->current_ssid;
 833         if (ssid == NULL) {
 834                 /*
 835                  * The current SSID was not known, but there may still be a
 836                  * pending P2P group interface waiting for provisioning or a
 837                  * P2P group that is trying to reconnect.
 838                  */
 839                 ssid = wpa_s->conf->ssid;
 840                 while (ssid) {
 841                         if (ssid->p2p_group && ssid->disabled != 2)
 842                                 break;
 843                         ssid = ssid->next;
 844                 }
 845                 if (ssid == NULL &&
 846                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 847                 {
 848                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 849                                    "not found");
 850                         return -1;
 851                 }
 852         }
 853         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 854                 gtype = "GO";
 855         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 856                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 857                 wpa_s->reassociate = 0;
 858                 wpa_s->disconnected = 1;
 859                 gtype = "client";
 860         } else
 861                 gtype = "GO";
 862
 863         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 864                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 865
 866         if (os_strcmp(gtype, "client") == 0) {
 867                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 868                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 869                                                 wpa_s, NULL)) {
 870                         wpa_printf(MSG_DEBUG,
 871                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 872                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 873                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 874                                              wpa_s, NULL);
 875                 }
 876         }
 877
 878         if (wpa_s->cross_connect_in_use) {
 879                 wpa_s->cross_connect_in_use = 0;
 880                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
 881                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 882                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 883         }
 884         switch (removal_reason) {
 885         case P2P_GROUP_REMOVAL_REQUESTED:
 886                 reason = " reason=REQUESTED";
 887                 break;
 888         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 889                 reason = " reason=FORMATION_FAILED";
 890                 break;
 891         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 892                 reason = " reason=IDLE";
 893                 break;
 894         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 895                 reason = " reason=UNAVAILABLE";
 896                 break;
 897         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 898                 reason = " reason=GO_ENDING_SESSION";
 899                 break;
 900         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 901                 reason = " reason=PSK_FAILURE";
 902                 break;
 903         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 904                 reason = " reason=FREQ_CONFLICT";
 905                 break;
 906         default:
 907                 reason = "";
 908                 break;
 909         }
 910         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 911                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
 912                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 913                                wpa_s->ifname, gtype, reason);
 914         }
 915
 916         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 917                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 918         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 919                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 920         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 921                                  wpa_s->p2pdev, NULL) > 0) {
 922                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 923                            "timeout");
 924                 wpa_s->p2p_in_provisioning = 0;
 925                 wpas_p2p_group_formation_failed(wpa_s, 1);
 926         }
 927
 928         wpa_s->p2p_in_invitation = 0;
 929         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
 930         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
 931
 932         /*
 933          * Make sure wait for the first client does not remain active after the
 934          * group has been removed.
 935          */
 936         wpa_s->global->p2p_go_wait_client.sec = 0;
 937
 938         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 939                 struct wpa_global *global;
 940                 char *ifname;
 941                 enum wpa_driver_if_type type;
 942                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 943                         wpa_s->ifname);
 944                 global = wpa_s->global;
 945                 ifname = os_strdup(wpa_s->ifname);
 946                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 947                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 948                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 949                 wpa_s = global->ifaces;
 950                 if (wpa_s && ifname)
 951                         wpa_drv_if_remove(wpa_s, type, ifname);
 952                 os_free(ifname);
 953                 return 1;
 954         }
 955
 956         /*
 957          * The primary interface was used for P2P group operations, so
 958          * need to reset its p2pdev.
 959          */
 960         wpa_s->p2pdev = wpa_s->parent;
 961
 962         if (!wpa_s->p2p_go_group_formation_completed) {
 963                 wpa_s->global->p2p_group_formation = NULL;
 964                 wpa_s->p2p_in_provisioning = 0;
 965         }
 966
 967         wpa_s->show_group_started = 0;
 968         os_free(wpa_s->go_params);
 969         wpa_s->go_params = NULL;
 970
 971         os_free(wpa_s->p2p_group_common_freqs);
 972         wpa_s->p2p_group_common_freqs = NULL;
 973         wpa_s->p2p_group_common_freqs_num = 0;
 974
 975         wpa_s->waiting_presence_resp = 0;
 976
 977         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 978         if (ssid && (ssid->p2p_group ||
 979                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 980                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 981                 int id = ssid->id;
 982                 if (ssid == wpa_s->current_ssid) {
 983                         wpa_sm_set_config(wpa_s->wpa, NULL);
 984                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 985                         wpa_s->current_ssid = NULL;
 986                 }
 987                 /*
 988                  * Networks objects created during any P2P activities are not
 989                  * exposed out as they might/will confuse certain non-P2P aware
 990                  * applications since these network objects won't behave like
 991                  * regular ones.
 992                  *
 993                  * Likewise, we don't send out network removed signals for such
 994                  * network objects.
 995                  */
 996                 wpa_config_remove_network(wpa_s->conf, id);
 997                 wpa_supplicant_clear_status(wpa_s);
 998                 wpa_supplicant_cancel_sched_scan(wpa_s);
 999         } else {
1000                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
1001                            "found");
1002         }
1003         if (wpa_s->ap_iface)
1004                 wpa_supplicant_ap_deinit(wpa_s);
1005         else
1006                 wpa_drv_deinit_p2p_cli(wpa_s);
1007
1008         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1009
1010         return 0;
1011 }
1012
1013
1014 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
1015                                      u8 *go_dev_addr,
1016                                      const u8 *ssid, size_t ssid_len)
1017 {
1018         struct wpa_bss *bss;
1019         const u8 *bssid;
1020         struct wpabuf *p2p;
1021         u8 group_capab;
1022         const u8 *addr;
1023
1024         if (wpa_s->go_params)
1025                 bssid = wpa_s->go_params->peer_interface_addr;
1026         else
1027                 bssid = wpa_s->bssid;
1028
1029         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
1030         if (bss == NULL && wpa_s->go_params &&
1031             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
1032                 bss = wpa_bss_get_p2p_dev_addr(
1033                         wpa_s, wpa_s->go_params->peer_device_addr);
1034         if (bss == NULL) {
1035                 u8 iface_addr[ETH_ALEN];
1036                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1037                                            iface_addr) == 0)
1038                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1039         }
1040         if (bss == NULL) {
1041                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1042                            "group is persistent - BSS " MACSTR " not found",
1043                            MAC2STR(bssid));
1044                 return 0;
1045         }
1046
1047         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1048         if (p2p == NULL)
1049                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1050                                                          P2P_IE_VENDOR_TYPE);
1051         if (p2p == NULL) {
1052                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1053                            "group is persistent - BSS " MACSTR
1054                            " did not include P2P IE", MAC2STR(bssid));
1055                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1056                             (u8 *) (bss + 1), bss->ie_len);
1057                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1058                             ((u8 *) bss + 1) + bss->ie_len,
1059                             bss->beacon_ie_len);
1060                 return 0;
1061         }
1062
1063         group_capab = p2p_get_group_capab(p2p);
1064         addr = p2p_get_go_dev_addr(p2p);
1065         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1066                    "group_capab=0x%x", group_capab);
1067         if (addr) {
1068                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1069                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1070                            MAC2STR(addr));
1071         } else
1072                 os_memset(go_dev_addr, 0, ETH_ALEN);
1073         wpabuf_free(p2p);
1074
1075         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1076                    "go_dev_addr=" MACSTR,
1077                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1078
1079         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1080 }
1081
1082
1083 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1084                                            struct wpa_ssid *ssid,
1085                                            const u8 *go_dev_addr)
1086 {
1087         struct wpa_ssid *s;
1088         int changed = 0;
1089
1090         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1091                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1092         for (s = wpa_s->conf->ssid; s; s = s->next) {
1093                 if (s->disabled == 2 &&
1094                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1095                     s->ssid_len == ssid->ssid_len &&
1096                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1097                         break;
1098         }
1099
1100         if (s) {
1101                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1102                            "entry");
1103                 if (ssid->passphrase && !s->passphrase)
1104                         changed = 1;
1105                 else if (ssid->passphrase && s->passphrase &&
1106                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1107                         changed = 1;
1108         } else {
1109                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1110                            "entry");
1111                 changed = 1;
1112                 s = wpa_config_add_network(wpa_s->conf);
1113                 if (s == NULL)
1114                         return -1;
1115
1116                 /*
1117                  * Instead of network_added we emit persistent_group_added
1118                  * notification. Also to keep the defense checks in
1119                  * persistent_group obj registration method, we set the
1120                  * relevant flags in s to designate it as a persistent group.
1121                  */
1122                 s->p2p_group = 1;
1123                 s->p2p_persistent_group = 1;
1124                 wpas_notify_persistent_group_added(wpa_s, s);
1125                 wpa_config_set_network_defaults(s);
1126         }
1127
1128         s->p2p_group = 1;
1129         s->p2p_persistent_group = 1;
1130         s->disabled = 2;
1131         s->bssid_set = 1;
1132         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1133         s->mode = ssid->mode;
1134         s->auth_alg = WPA_AUTH_ALG_OPEN;
1135         s->key_mgmt = WPA_KEY_MGMT_PSK;
1136         s->proto = WPA_PROTO_RSN;
1137         s->pbss = ssid->pbss;
1138         s->pairwise_cipher = ssid->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP;
1139         s->export_keys = 1;
1140         if (ssid->passphrase) {
1141                 os_free(s->passphrase);
1142                 s->passphrase = os_strdup(ssid->passphrase);
1143         }
1144         if (ssid->psk_set) {
1145                 s->psk_set = 1;
1146                 os_memcpy(s->psk, ssid->psk, 32);
1147         }
1148         if (s->passphrase && !s->psk_set)
1149                 wpa_config_update_psk(s);
1150         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1151                 os_free(s->ssid);
1152                 s->ssid = os_malloc(ssid->ssid_len);
1153         }
1154         if (s->ssid) {
1155                 s->ssid_len = ssid->ssid_len;
1156                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1157         }
1158         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1159                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1160                 wpa_s->global->add_psk = NULL;
1161                 changed = 1;
1162         }
1163
1164         if (changed && wpa_s->conf->update_config &&
1165             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1166                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1167         }
1168
1169         return s->id;
1170 }
1171
1172
1173 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1174                                                  const u8 *addr)
1175 {
1176         struct wpa_ssid *ssid, *s;
1177         u8 *n;
1178         size_t i;
1179         int found = 0;
1180         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1181
1182         ssid = wpa_s->current_ssid;
1183         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1184             !ssid->p2p_persistent_group)
1185                 return;
1186
1187         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1188                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1189                         continue;
1190
1191                 if (s->ssid_len == ssid->ssid_len &&
1192                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1193                         break;
1194         }
1195
1196         if (s == NULL)
1197                 return;
1198
1199         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1200                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1201                               ETH_ALEN) != 0)
1202                         continue;
1203
1204                 if (i == s->num_p2p_clients - 1)
1205                         return; /* already the most recent entry */
1206
1207                 /* move the entry to mark it most recent */
1208                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1209                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1210                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1211                 os_memcpy(s->p2p_client_list +
1212                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1213                           ETH_ALEN);
1214                 os_memset(s->p2p_client_list +
1215                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1216                           0xff, ETH_ALEN);
1217                 found = 1;
1218                 break;
1219         }
1220
1221         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1222                 n = os_realloc_array(s->p2p_client_list,
1223                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1224                 if (n == NULL)
1225                         return;
1226                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1227                           ETH_ALEN);
1228                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1229                           0xff, ETH_ALEN);
1230                 s->p2p_client_list = n;
1231                 s->num_p2p_clients++;
1232         } else if (!found && s->p2p_client_list) {
1233                 /* Not enough room for an additional entry - drop the oldest
1234                  * entry */
1235                 os_memmove(s->p2p_client_list,
1236                            s->p2p_client_list + 2 * ETH_ALEN,
1237                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1238                 os_memcpy(s->p2p_client_list +
1239                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1240                           addr, ETH_ALEN);
1241                 os_memset(s->p2p_client_list +
1242                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1243                           0xff, ETH_ALEN);
1244         }
1245
1246         if (p2p_wpa_s->conf->update_config &&
1247             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1248                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1249 }
1250
1251
1252 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1253                                    int go, struct wpa_ssid *ssid, int freq,
1254                                    const u8 *psk, const char *passphrase,
1255                                    const u8 *go_dev_addr, int persistent,
1256                                    const char *extra)
1257 {
1258         const char *ssid_txt;
1259         char psk_txt[65];
1260
1261         if (psk)
1262                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1263         else
1264                 psk_txt[0] = '\0';
1265
1266         if (ssid)
1267                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1268         else
1269                 ssid_txt = "";
1270
1271         if (passphrase && passphrase[0] == '\0')
1272                 passphrase = NULL;
1273
1274         /*
1275          * Include PSK/passphrase only in the control interface message and
1276          * leave it out from the debug log entry.
1277          */
1278         wpa_msg_global_ctrl(wpa_s->p2pdev, MSG_INFO,
1279                             P2P_EVENT_GROUP_STARTED
1280                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1281                             MACSTR "%s%s",
1282                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1283                             psk ? " psk=" : "", psk_txt,
1284                             passphrase ? " passphrase=\"" : "",
1285                             passphrase ? passphrase : "",
1286                             passphrase ? "\"" : "",
1287                             MAC2STR(go_dev_addr),
1288                             persistent ? " [PERSISTENT]" : "", extra);
1289         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1290                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1291                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1292                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1293                    extra);
1294 }
1295
1296
1297 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1298                                            int success, int already_deleted)
1299 {
1300         struct wpa_ssid *ssid;
1301         int client;
1302         int persistent;
1303         u8 go_dev_addr[ETH_ALEN];
1304         int network_id = -1;
1305
1306         /*
1307          * This callback is likely called for the main interface. Update wpa_s
1308          * to use the group interface if a new interface was created for the
1309          * group.
1310          */
1311         if (wpa_s->global->p2p_group_formation)
1312                 wpa_s = wpa_s->global->p2p_group_formation;
1313         if (wpa_s->p2p_go_group_formation_completed) {
1314                 wpa_s->global->p2p_group_formation = NULL;
1315                 wpa_s->p2p_in_provisioning = 0;
1316         }
1317         wpa_s->p2p_in_invitation = 0;
1318         wpa_s->group_formation_reported = 1;
1319
1320         if (!success) {
1321                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1322                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1323                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1324                 if (already_deleted)
1325                         return;
1326                 wpas_p2p_group_delete(wpa_s,
1327                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1328                 return;
1329         }
1330
1331         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1332                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1333
1334         ssid = wpa_s->current_ssid;
1335         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1336                 ssid->mode = WPAS_MODE_P2P_GO;
1337                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1338                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1339         }
1340
1341         persistent = 0;
1342         if (ssid) {
1343                 client = ssid->mode == WPAS_MODE_INFRA;
1344                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1345                         persistent = ssid->p2p_persistent_group;
1346                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1347                                   ETH_ALEN);
1348                 } else
1349                         persistent = wpas_p2p_persistent_group(wpa_s,
1350                                                                go_dev_addr,
1351                                                                ssid->ssid,
1352                                                                ssid->ssid_len);
1353         } else {
1354                 client = wpa_s->p2p_group_interface ==
1355                         P2P_GROUP_INTERFACE_CLIENT;
1356                 os_memset(go_dev_addr, 0, ETH_ALEN);
1357         }
1358
1359         wpa_s->show_group_started = 0;
1360         if (client) {
1361                 /*
1362                  * Indicate event only after successfully completed 4-way
1363                  * handshake, i.e., when the interface is ready for data
1364                  * packets.
1365                  */
1366                 wpa_s->show_group_started = 1;
1367         } else {
1368                 wpas_p2p_group_started(wpa_s, 1, ssid,
1369                                        ssid ? ssid->frequency : 0,
1370                                        ssid && ssid->passphrase == NULL &&
1371                                        ssid->psk_set ? ssid->psk : NULL,
1372                                        ssid ? ssid->passphrase : NULL,
1373                                        go_dev_addr, persistent, "");
1374                 wpas_p2p_cross_connect_setup(wpa_s);
1375                 wpas_p2p_set_group_idle_timeout(wpa_s);
1376         }
1377
1378         if (persistent)
1379                 network_id = wpas_p2p_store_persistent_group(wpa_s->p2pdev,
1380                                                              ssid, go_dev_addr);
1381         else {
1382                 os_free(wpa_s->global->add_psk);
1383                 wpa_s->global->add_psk = NULL;
1384         }
1385         if (network_id < 0 && ssid)
1386                 network_id = ssid->id;
1387         if (!client) {
1388                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1389                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1390         }
1391 }
1392
1393
1394 struct send_action_work {
1395         unsigned int freq;
1396         u8 dst[ETH_ALEN];
1397         u8 src[ETH_ALEN];
1398         u8 bssid[ETH_ALEN];
1399         size_t len;
1400         unsigned int wait_time;
1401         u8 buf[0];
1402 };
1403
1404
1405 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s)
1406 {
1407         struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx;
1408
1409         wpa_printf(MSG_DEBUG,
1410                    "P2P: Free Action frame radio work @%p (freq=%u dst="
1411                    MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)",
1412                    wpa_s->p2p_send_action_work, awork->freq,
1413                    MAC2STR(awork->dst), MAC2STR(awork->src),
1414                    MAC2STR(awork->bssid), awork->wait_time);
1415         wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame",
1416                     awork->buf, awork->len);
1417         os_free(awork);
1418         wpa_s->p2p_send_action_work->ctx = NULL;
1419         radio_work_done(wpa_s->p2p_send_action_work);
1420         wpa_s->p2p_send_action_work = NULL;
1421 }
1422
1423
1424 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1425                                               void *timeout_ctx)
1426 {
1427         struct wpa_supplicant *wpa_s = eloop_ctx;
1428
1429         if (!wpa_s->p2p_send_action_work)
1430                 return;
1431
1432         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1433         wpas_p2p_free_send_action_work(wpa_s);
1434 }
1435
1436
1437 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1438 {
1439         if (wpa_s->p2p_send_action_work) {
1440                 struct send_action_work *awork;
1441
1442                 awork = wpa_s->p2p_send_action_work->ctx;
1443                 wpa_printf(MSG_DEBUG,
1444                            "P2P: Clear Action TX work @%p (wait_time=%u)",
1445                            wpa_s->p2p_send_action_work, awork->wait_time);
1446                 if (awork->wait_time == 0) {
1447                         wpas_p2p_free_send_action_work(wpa_s);
1448                 } else {
1449                         /*
1450                          * In theory, this should not be needed, but number of
1451                          * places in the P2P code is still using non-zero wait
1452                          * time for the last Action frame in the sequence and
1453                          * some of these do not call send_action_done().
1454                          */
1455                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1456                                              wpa_s, NULL);
1457                         eloop_register_timeout(
1458                                 0, awork->wait_time * 1000,
1459                                 wpas_p2p_send_action_work_timeout,
1460                                 wpa_s, NULL);
1461                 }
1462         }
1463 }
1464
1465
1466 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1467                                            unsigned int freq,
1468                                            const u8 *dst, const u8 *src,
1469                                            const u8 *bssid,
1470                                            const u8 *data, size_t data_len,
1471                                            enum offchannel_send_action_result
1472                                            result)
1473 {
1474         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1475
1476         wpas_p2p_action_tx_clear(wpa_s);
1477
1478         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1479                 return;
1480
1481         switch (result) {
1482         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1483                 res = P2P_SEND_ACTION_SUCCESS;
1484                 break;
1485         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1486                 res = P2P_SEND_ACTION_NO_ACK;
1487                 break;
1488         case OFFCHANNEL_SEND_ACTION_FAILED:
1489                 res = P2P_SEND_ACTION_FAILED;
1490                 break;
1491         }
1492
1493         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1494
1495         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1496             wpa_s->pending_pd_before_join &&
1497             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1498              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1499             wpa_s->p2p_fallback_to_go_neg) {
1500                 wpa_s->pending_pd_before_join = 0;
1501                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1502                         "during p2p_connect-auto");
1503                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1504                                P2P_EVENT_FALLBACK_TO_GO_NEG
1505                                "reason=no-ACK-to-PD-Req");
1506                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1507                 return;
1508         }
1509 }
1510
1511
1512 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1513 {
1514         struct wpa_supplicant *wpa_s = work->wpa_s;
1515         struct send_action_work *awork = work->ctx;
1516
1517         if (deinit) {
1518                 if (work->started) {
1519                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1520                                              wpa_s, NULL);
1521                         wpa_s->p2p_send_action_work = NULL;
1522                         offchannel_send_action_done(wpa_s);
1523                 }
1524                 os_free(awork);
1525                 return;
1526         }
1527
1528         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1529                                    awork->bssid, awork->buf, awork->len,
1530                                    awork->wait_time,
1531                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1532                 os_free(awork);
1533                 radio_work_done(work);
1534                 return;
1535         }
1536         wpa_s->p2p_send_action_work = work;
1537 }
1538
1539
1540 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1541                                  unsigned int freq, const u8 *dst,
1542                                  const u8 *src, const u8 *bssid, const u8 *buf,
1543                                  size_t len, unsigned int wait_time)
1544 {
1545         struct send_action_work *awork;
1546
1547         if (wpa_s->p2p_send_action_work) {
1548                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1549                 return -1;
1550         }
1551
1552         awork = os_zalloc(sizeof(*awork) + len);
1553         if (awork == NULL)
1554                 return -1;
1555
1556         awork->freq = freq;
1557         os_memcpy(awork->dst, dst, ETH_ALEN);
1558         os_memcpy(awork->src, src, ETH_ALEN);
1559         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1560         awork->len = len;
1561         awork->wait_time = wait_time;
1562         os_memcpy(awork->buf, buf, len);
1563
1564         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1565                            wpas_send_action_cb, awork) < 0) {
1566                 os_free(awork);
1567                 return -1;
1568         }
1569
1570         return 0;
1571 }
1572
1573
1574 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1575                             const u8 *src, const u8 *bssid, const u8 *buf,
1576                             size_t len, unsigned int wait_time)
1577 {
1578         struct wpa_supplicant *wpa_s = ctx;
1579         int listen_freq = -1, send_freq = -1;
1580
1581         if (wpa_s->p2p_listen_work)
1582                 listen_freq = wpa_s->p2p_listen_work->freq;
1583         if (wpa_s->p2p_send_action_work)
1584                 send_freq = wpa_s->p2p_send_action_work->freq;
1585         if (listen_freq != (int) freq && send_freq != (int) freq) {
1586                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1587                            listen_freq, send_freq);
1588                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1589                                              len, wait_time);
1590         }
1591
1592         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1593         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1594                                       wait_time,
1595                                       wpas_p2p_send_action_tx_status, 1);
1596 }
1597
1598
1599 static void wpas_send_action_done(void *ctx)
1600 {
1601         struct wpa_supplicant *wpa_s = ctx;
1602
1603         if (wpa_s->p2p_send_action_work) {
1604                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1605                                      wpa_s, NULL);
1606                 os_free(wpa_s->p2p_send_action_work->ctx);
1607                 radio_work_done(wpa_s->p2p_send_action_work);
1608                 wpa_s->p2p_send_action_work = NULL;
1609         }
1610
1611         offchannel_send_action_done(wpa_s);
1612 }
1613
1614
1615 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1616                                     struct p2p_go_neg_results *params)
1617 {
1618         if (wpa_s->go_params == NULL) {
1619                 wpa_s->go_params = os_malloc(sizeof(*params));
1620                 if (wpa_s->go_params == NULL)
1621                         return -1;
1622         }
1623         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1624         return 0;
1625 }
1626
1627
1628 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1629                                     struct p2p_go_neg_results *res)
1630 {
1631         wpa_s->group_formation_reported = 0;
1632         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1633                    " dev_addr " MACSTR " wps_method %d",
1634                    MAC2STR(res->peer_interface_addr),
1635                    MAC2STR(res->peer_device_addr), res->wps_method);
1636         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1637                           res->ssid, res->ssid_len);
1638         wpa_supplicant_ap_deinit(wpa_s);
1639         wpas_copy_go_neg_results(wpa_s, res);
1640         if (res->wps_method == WPS_PBC) {
1641                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1642 #ifdef CONFIG_WPS_NFC
1643         } else if (res->wps_method == WPS_NFC) {
1644                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1645                                    res->peer_interface_addr,
1646                                    wpa_s->p2pdev->p2p_oob_dev_pw,
1647                                    wpa_s->p2pdev->p2p_oob_dev_pw_id, 1,
1648                                    wpa_s->p2pdev->p2p_oob_dev_pw_id ==
1649                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1650                                    wpa_s->p2pdev->p2p_peer_oob_pubkey_hash :
1651                                    NULL,
1652                                    NULL, 0, 0);
1653 #endif /* CONFIG_WPS_NFC */
1654         } else {
1655                 u16 dev_pw_id = DEV_PW_DEFAULT;
1656                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1657                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1658                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1659                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1660                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1661                                    wpa_s->p2p_pin, 1, dev_pw_id);
1662         }
1663 }
1664
1665
1666 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1667                                   struct wpa_ssid *ssid)
1668 {
1669         struct wpa_ssid *persistent;
1670         struct psk_list_entry *psk;
1671         struct hostapd_data *hapd;
1672
1673         if (!wpa_s->ap_iface)
1674                 return;
1675
1676         persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
1677                                              ssid->ssid_len);
1678         if (persistent == NULL)
1679                 return;
1680
1681         hapd = wpa_s->ap_iface->bss[0];
1682
1683         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1684                          list) {
1685                 struct hostapd_wpa_psk *hpsk;
1686
1687                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1688                         MACSTR " psk=%d",
1689                         MAC2STR(psk->addr), psk->p2p);
1690                 hpsk = os_zalloc(sizeof(*hpsk));
1691                 if (hpsk == NULL)
1692                         break;
1693                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1694                 if (psk->p2p)
1695                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1696                 else
1697                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1698                 hpsk->next = hapd->conf->ssid.wpa_psk;
1699                 hapd->conf->ssid.wpa_psk = hpsk;
1700         }
1701 }
1702
1703
1704 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1705 {
1706         unsigned int i;
1707
1708         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1709                 wpa_s->p2p_group_common_freqs_num);
1710
1711         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1712                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1713                         i, wpa_s->p2p_group_common_freqs[i]);
1714 }
1715
1716
1717 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1718                                            struct p2p_go_neg_results *params)
1719 {
1720         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1721
1722         wpa_s->p2p_group_common_freqs_num = 0;
1723         os_free(wpa_s->p2p_group_common_freqs);
1724         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1725         if (!wpa_s->p2p_group_common_freqs)
1726                 return;
1727
1728         for (i = 0; i < len; i++) {
1729                 if (!wpa_s->go_params->freq_list[i])
1730                         break;
1731                 wpa_s->p2p_group_common_freqs[i] =
1732                         wpa_s->go_params->freq_list[i];
1733         }
1734         wpa_s->p2p_group_common_freqs_num = i;
1735 }
1736
1737
1738 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1739 {
1740 #ifndef CONFIG_NO_CONFIG_WRITE
1741         if (wpa_s->p2pdev->conf->update_config &&
1742             wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
1743                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1744 #endif /* CONFIG_NO_CONFIG_WRITE */
1745 }
1746
1747
1748 static void p2p_go_configured(void *ctx, void *data)
1749 {
1750         struct wpa_supplicant *wpa_s = ctx;
1751         struct p2p_go_neg_results *params = data;
1752         struct wpa_ssid *ssid;
1753         int network_id = -1;
1754
1755         wpa_s->ap_configured_cb = NULL;
1756         wpa_s->ap_configured_cb_ctx = NULL;
1757         wpa_s->ap_configured_cb_data = NULL;
1758         if (!wpa_s->go_params) {
1759                 wpa_printf(MSG_ERROR,
1760                            "P2P: p2p_go_configured() called with wpa_s->go_params == NULL");
1761                 return;
1762         }
1763
1764         p2p_go_save_group_common_freqs(wpa_s, params);
1765         p2p_go_dump_common_freqs(wpa_s);
1766
1767         ssid = wpa_s->current_ssid;
1768         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1769                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1770                 if (wpa_s->global->p2p_group_formation == wpa_s)
1771                         wpa_s->global->p2p_group_formation = NULL;
1772                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1773                                        params->passphrase[0] == '\0' ?
1774                                        params->psk : NULL,
1775                                        params->passphrase,
1776                                        wpa_s->global->p2p_dev_addr,
1777                                        params->persistent_group, "");
1778                 wpa_s->group_formation_reported = 1;
1779
1780                 if (wpa_s->p2pdev->p2ps_method_config_any) {
1781                         if (is_zero_ether_addr(wpa_s->p2pdev->p2ps_join_addr)) {
1782                                 wpa_dbg(wpa_s, MSG_DEBUG,
1783                                         "P2PS: Setting default PIN for ANY");
1784                                 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1785                                                           "12345670", NULL, 0,
1786                                                           0);
1787                         } else {
1788                                 wpa_dbg(wpa_s, MSG_DEBUG,
1789                                         "P2PS: Setting default PIN for " MACSTR,
1790                                         MAC2STR(wpa_s->p2pdev->p2ps_join_addr));
1791                                 wpa_supplicant_ap_wps_pin(
1792                                         wpa_s, wpa_s->p2pdev->p2ps_join_addr,
1793                                         "12345670", NULL, 0, 0);
1794                         }
1795                         wpa_s->p2pdev->p2ps_method_config_any = 0;
1796                 }
1797
1798                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1799                 if (params->persistent_group) {
1800                         network_id = wpas_p2p_store_persistent_group(
1801                                 wpa_s->p2pdev, ssid,
1802                                 wpa_s->global->p2p_dev_addr);
1803                         wpas_p2p_add_psk_list(wpa_s, ssid);
1804                 }
1805                 if (network_id < 0)
1806                         network_id = ssid->id;
1807                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1808                 wpas_p2p_cross_connect_setup(wpa_s);
1809                 wpas_p2p_set_group_idle_timeout(wpa_s);
1810
1811                 if (wpa_s->p2p_first_connection_timeout) {
1812                         wpa_dbg(wpa_s, MSG_DEBUG,
1813                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1814                                 wpa_s->p2p_first_connection_timeout);
1815                         wpa_s->p2p_go_group_formation_completed = 0;
1816                         wpa_s->global->p2p_group_formation = wpa_s;
1817                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1818                                              wpa_s->p2pdev, NULL);
1819                         eloop_register_timeout(
1820                                 wpa_s->p2p_first_connection_timeout, 0,
1821                                 wpas_p2p_group_formation_timeout,
1822                                 wpa_s->p2pdev, NULL);
1823                 }
1824
1825                 return;
1826         }
1827
1828         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1829         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1830                                               params->peer_interface_addr)) {
1831                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1832                            "filtering");
1833                 return;
1834         }
1835         if (params->wps_method == WPS_PBC) {
1836                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1837                                           params->peer_device_addr);
1838 #ifdef CONFIG_WPS_NFC
1839         } else if (params->wps_method == WPS_NFC) {
1840                 if (wpa_s->p2pdev->p2p_oob_dev_pw_id !=
1841                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1842                     !wpa_s->p2pdev->p2p_oob_dev_pw) {
1843                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1844                         return;
1845                 }
1846                 wpas_ap_wps_add_nfc_pw(
1847                         wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id,
1848                         wpa_s->p2pdev->p2p_oob_dev_pw,
1849                         wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ?
1850                         wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL);
1851 #endif /* CONFIG_WPS_NFC */
1852         } else if (wpa_s->p2p_pin[0])
1853                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1854                                           wpa_s->p2p_pin, NULL, 0, 0);
1855         os_free(wpa_s->go_params);
1856         wpa_s->go_params = NULL;
1857 }
1858
1859
1860 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1861                               struct p2p_go_neg_results *params,
1862                               int group_formation)
1863 {
1864         struct wpa_ssid *ssid;
1865
1866         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1867         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1868                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1869                         "results");
1870                 return;
1871         }
1872
1873         ssid = wpa_config_add_network(wpa_s->conf);
1874         if (ssid == NULL) {
1875                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1876                 return;
1877         }
1878
1879         wpa_s->show_group_started = 0;
1880         wpa_s->p2p_go_group_formation_completed = 0;
1881         wpa_s->group_formation_reported = 0;
1882         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1883
1884         wpa_config_set_network_defaults(ssid);
1885         ssid->temporary = 1;
1886         ssid->p2p_group = 1;
1887         ssid->p2p_persistent_group = params->persistent_group;
1888         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1889                 WPAS_MODE_P2P_GO;
1890         ssid->frequency = params->freq;
1891         ssid->ht40 = params->ht40;
1892         ssid->vht = params->vht;
1893         ssid->max_oper_chwidth = params->max_oper_chwidth;
1894         ssid->vht_center_freq2 = params->vht_center_freq2;
1895         ssid->ssid = os_zalloc(params->ssid_len + 1);
1896         if (ssid->ssid) {
1897                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1898                 ssid->ssid_len = params->ssid_len;
1899         }
1900         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1901         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1902         ssid->proto = WPA_PROTO_RSN;
1903         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1904         ssid->group_cipher = WPA_CIPHER_CCMP;
1905         if (params->freq > 56160) {
1906                 /*
1907                  * Enable GCMP instead of CCMP as pairwise_cipher and
1908                  * group_cipher in 60 GHz.
1909                  */
1910                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1911                 ssid->group_cipher = WPA_CIPHER_GCMP;
1912                 /* P2P GO in 60 GHz is always a PCP (PBSS) */
1913                 ssid->pbss = 1;
1914         }
1915         if (os_strlen(params->passphrase) > 0) {
1916                 ssid->passphrase = os_strdup(params->passphrase);
1917                 if (ssid->passphrase == NULL) {
1918                         wpa_msg_global(wpa_s, MSG_ERROR,
1919                                        "P2P: Failed to copy passphrase for GO");
1920                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1921                         return;
1922                 }
1923         } else
1924                 ssid->passphrase = NULL;
1925         ssid->psk_set = params->psk_set;
1926         if (ssid->psk_set)
1927                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1928         else if (ssid->passphrase)
1929                 wpa_config_update_psk(ssid);
1930         ssid->ap_max_inactivity = wpa_s->p2pdev->conf->p2p_go_max_inactivity;
1931
1932         wpa_s->ap_configured_cb = p2p_go_configured;
1933         wpa_s->ap_configured_cb_ctx = wpa_s;
1934         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1935         wpa_s->scan_req = NORMAL_SCAN_REQ;
1936         wpa_s->connect_without_scan = ssid;
1937         wpa_s->reassociate = 1;
1938         wpa_s->disconnected = 0;
1939         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1940                 "start GO)");
1941         wpa_supplicant_req_scan(wpa_s, 0, 0);
1942 }
1943
1944
1945 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1946                                   const struct wpa_supplicant *src)
1947 {
1948         struct wpa_config *d;
1949         const struct wpa_config *s;
1950
1951         d = dst->conf;
1952         s = src->conf;
1953
1954 #define C(n)                            \
1955 do {                                    \
1956         if (s->n && !d->n)              \
1957                 d->n = os_strdup(s->n); \
1958 } while (0)
1959
1960         C(device_name);
1961         C(manufacturer);
1962         C(model_name);
1963         C(model_number);
1964         C(serial_number);
1965         C(config_methods);
1966 #undef C
1967
1968         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1969         os_memcpy(d->sec_device_type, s->sec_device_type,
1970                   sizeof(d->sec_device_type));
1971         d->num_sec_device_types = s->num_sec_device_types;
1972
1973         d->p2p_group_idle = s->p2p_group_idle;
1974         d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
1975         d->p2p_intra_bss = s->p2p_intra_bss;
1976         d->persistent_reconnect = s->persistent_reconnect;
1977         d->max_num_sta = s->max_num_sta;
1978         d->pbc_in_m1 = s->pbc_in_m1;
1979         d->ignore_old_scan_res = s->ignore_old_scan_res;
1980         d->beacon_int = s->beacon_int;
1981         d->dtim_period = s->dtim_period;
1982         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1983         d->disassoc_low_ack = s->disassoc_low_ack;
1984         d->disable_scan_offload = s->disable_scan_offload;
1985         d->passive_scan = s->passive_scan;
1986
1987         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey &&
1988             !d->wps_nfc_pw_from_config) {
1989                 wpabuf_free(d->wps_nfc_dh_privkey);
1990                 wpabuf_free(d->wps_nfc_dh_pubkey);
1991                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1992                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1993         }
1994         d->p2p_cli_probe = s->p2p_cli_probe;
1995 }
1996
1997
1998 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1999                                       char *ifname, size_t len)
2000 {
2001         char *ifname_ptr = wpa_s->ifname;
2002
2003         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
2004                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
2005                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
2006         }
2007
2008         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
2009         if (os_strlen(ifname) >= IFNAMSIZ &&
2010             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
2011                 int res;
2012
2013                 /* Try to avoid going over the IFNAMSIZ length limit */
2014                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
2015                 if (os_snprintf_error(len, res) && len)
2016                         ifname[len - 1] = '\0';
2017         }
2018 }
2019
2020
2021 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
2022                                         enum wpa_driver_if_type type)
2023 {
2024         char ifname[120], force_ifname[120];
2025
2026         if (wpa_s->pending_interface_name[0]) {
2027                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
2028                            "- skip creation of a new one");
2029                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
2030                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
2031                                    "unknown?! ifname='%s'",
2032                                    wpa_s->pending_interface_name);
2033                         return -1;
2034                 }
2035                 return 0;
2036         }
2037
2038         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
2039         force_ifname[0] = '\0';
2040
2041         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
2042                    ifname);
2043         wpa_s->p2p_group_idx++;
2044
2045         wpa_s->pending_interface_type = type;
2046         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
2047                            wpa_s->pending_interface_addr, NULL) < 0) {
2048                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
2049                            "interface");
2050                 return -1;
2051         }
2052
2053         if (force_ifname[0]) {
2054                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2055                            force_ifname);
2056                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2057                            sizeof(wpa_s->pending_interface_name));
2058         } else
2059                 os_strlcpy(wpa_s->pending_interface_name, ifname,
2060                            sizeof(wpa_s->pending_interface_name));
2061         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2062                    MACSTR, wpa_s->pending_interface_name,
2063                    MAC2STR(wpa_s->pending_interface_addr));
2064
2065         return 0;
2066 }
2067
2068
2069 static void wpas_p2p_remove_pending_group_interface(
2070         struct wpa_supplicant *wpa_s)
2071 {
2072         if (!wpa_s->pending_interface_name[0] ||
2073             is_zero_ether_addr(wpa_s->pending_interface_addr))
2074                 return; /* No pending virtual interface */
2075
2076         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2077                    wpa_s->pending_interface_name);
2078         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2079                           wpa_s->pending_interface_name);
2080         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2081         wpa_s->pending_interface_name[0] = '\0';
2082         wpa_s->global->pending_group_iface_for_p2ps = 0;
2083 }
2084
2085
2086 static struct wpa_supplicant *
2087 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2088 {
2089         struct wpa_interface iface;
2090         struct wpa_supplicant *group_wpa_s;
2091
2092         if (!wpa_s->pending_interface_name[0]) {
2093                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2094                 if (!wpas_p2p_create_iface(wpa_s))
2095                         return NULL;
2096                 /*
2097                  * Something has forced us to remove the pending interface; try
2098                  * to create a new one and hope for the best that we will get
2099                  * the same local address.
2100                  */
2101                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2102                                                  WPA_IF_P2P_CLIENT) < 0)
2103                         return NULL;
2104         }
2105
2106         os_memset(&iface, 0, sizeof(iface));
2107         iface.ifname = wpa_s->pending_interface_name;
2108         iface.driver = wpa_s->driver->name;
2109         if (wpa_s->conf->ctrl_interface == NULL &&
2110             wpa_s->parent != wpa_s &&
2111             wpa_s->p2p_mgmt &&
2112             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2113                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2114         else
2115                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2116         iface.driver_param = wpa_s->conf->driver_param;
2117         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2118         if (group_wpa_s == NULL) {
2119                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2120                            "wpa_supplicant interface");
2121                 return NULL;
2122         }
2123         wpa_s->pending_interface_name[0] = '\0';
2124         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2125                 P2P_GROUP_INTERFACE_CLIENT;
2126         wpa_s->global->p2p_group_formation = group_wpa_s;
2127         wpa_s->global->pending_group_iface_for_p2ps = 0;
2128
2129         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2130
2131         return group_wpa_s;
2132 }
2133
2134
2135 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2136                                              void *timeout_ctx)
2137 {
2138         struct wpa_supplicant *wpa_s = eloop_ctx;
2139         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2140         wpas_p2p_group_formation_failed(wpa_s, 0);
2141 }
2142
2143
2144 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2145                                             int already_deleted)
2146 {
2147         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2148                              wpa_s->p2pdev, NULL);
2149         if (wpa_s->global->p2p)
2150                 p2p_group_formation_failed(wpa_s->global->p2p);
2151         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2152 }
2153
2154
2155 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2156 {
2157         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2158         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2159                              wpa_s->p2pdev, NULL);
2160         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2161                                wpa_s->p2pdev, NULL);
2162         wpa_s->global->p2p_fail_on_wps_complete = 0;
2163 }
2164
2165
2166 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2167 {
2168         if (wpa_s->global->p2p_group_formation != wpa_s)
2169                 return;
2170         /* Speed up group formation timeout since this cannot succeed */
2171         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2172                              wpa_s->p2pdev, NULL);
2173         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2174                                wpa_s->p2pdev, NULL);
2175 }
2176
2177
2178 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2179 {
2180         struct wpa_supplicant *wpa_s = ctx;
2181         struct wpa_supplicant *group_wpa_s;
2182
2183         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2184                 wpa_drv_cancel_remain_on_channel(wpa_s);
2185                 wpa_s->off_channel_freq = 0;
2186                 wpa_s->roc_waiting_drv_freq = 0;
2187         }
2188
2189         if (res->status) {
2190                 wpa_msg_global(wpa_s, MSG_INFO,
2191                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2192                                res->status);
2193                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2194                 wpas_p2p_remove_pending_group_interface(wpa_s);
2195                 return;
2196         }
2197
2198         if (!res->role_go) {
2199                 /* Inform driver of the operating channel of GO. */
2200                 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2201         }
2202
2203         if (wpa_s->p2p_go_ht40)
2204                 res->ht40 = 1;
2205         if (wpa_s->p2p_go_vht)
2206                 res->vht = 1;
2207         res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth;
2208         res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2;
2209
2210         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2211                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2212                        " wps_method=%s",
2213                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2214                        MAC2STR(res->peer_device_addr),
2215                        MAC2STR(res->peer_interface_addr),
2216                        p2p_wps_method_text(res->wps_method));
2217         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2218
2219         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2220                 struct wpa_ssid *ssid;
2221                 ssid = wpa_config_get_network(wpa_s->conf,
2222                                               wpa_s->p2p_persistent_id);
2223                 if (ssid && ssid->disabled == 2 &&
2224                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2225                         size_t len = os_strlen(ssid->passphrase);
2226                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2227                                    "on requested persistent group");
2228                         os_memcpy(res->passphrase, ssid->passphrase, len);
2229                         res->passphrase[len] = '\0';
2230                 }
2231         }
2232
2233         if (wpa_s->create_p2p_iface) {
2234                 group_wpa_s =
2235                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2236                 if (group_wpa_s == NULL) {
2237                         wpas_p2p_remove_pending_group_interface(wpa_s);
2238                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2239                                              wpa_s, NULL);
2240                         wpas_p2p_group_formation_failed(wpa_s, 1);
2241                         return;
2242                 }
2243                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2244                 wpa_s->pending_interface_name[0] = '\0';
2245         } else {
2246                 group_wpa_s = wpa_s->parent;
2247                 wpa_s->global->p2p_group_formation = group_wpa_s;
2248                 if (group_wpa_s != wpa_s)
2249                         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2250         }
2251
2252         group_wpa_s->p2p_in_provisioning = 1;
2253         group_wpa_s->p2pdev = wpa_s;
2254         if (group_wpa_s != wpa_s) {
2255                 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2256                           sizeof(group_wpa_s->p2p_pin));
2257                 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2258         }
2259         if (res->role_go) {
2260                 wpas_start_wps_go(group_wpa_s, res, 1);
2261         } else {
2262                 os_get_reltime(&group_wpa_s->scan_min_time);
2263                 wpas_start_wps_enrollee(group_wpa_s, res);
2264         }
2265
2266         wpa_s->p2p_long_listen = 0;
2267         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2268
2269         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2270         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2271                                (res->peer_config_timeout % 100) * 10000,
2272                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2273 }
2274
2275
2276 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2277                                u8 go_intent)
2278 {
2279         struct wpa_supplicant *wpa_s = ctx;
2280         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2281                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2282                        dev_passwd_id, go_intent);
2283
2284         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2285 }
2286
2287
2288 static void wpas_dev_found(void *ctx, const u8 *addr,
2289                            const struct p2p_peer_info *info,
2290                            int new_device)
2291 {
2292 #ifndef CONFIG_NO_STDOUT_DEBUG
2293         struct wpa_supplicant *wpa_s = ctx;
2294         char devtype[WPS_DEV_TYPE_BUFSIZE];
2295         char *wfd_dev_info_hex = NULL;
2296
2297 #ifdef CONFIG_WIFI_DISPLAY
2298         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2299                                                     WFD_SUBELEM_DEVICE_INFO);
2300 #endif /* CONFIG_WIFI_DISPLAY */
2301
2302         if (info->p2ps_instance) {
2303                 char str[256];
2304                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2305                 size_t len = wpabuf_len(info->p2ps_instance);
2306
2307                 while (len) {
2308                         u32 id;
2309                         u16 methods;
2310                         u8 str_len;
2311
2312                         if (len < 4 + 2 + 1)
2313                                 break;
2314                         id = WPA_GET_LE32(buf);
2315                         buf += sizeof(u32);
2316                         methods = WPA_GET_BE16(buf);
2317                         buf += sizeof(u16);
2318                         str_len = *buf++;
2319                         if (str_len > len - 4 - 2 - 1)
2320                                 break;
2321                         os_memcpy(str, buf, str_len);
2322                         str[str_len] = '\0';
2323                         buf += str_len;
2324                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2325
2326                         wpa_msg_global(wpa_s, MSG_INFO,
2327                                        P2P_EVENT_DEVICE_FOUND MACSTR
2328                                        " p2p_dev_addr=" MACSTR
2329                                        " pri_dev_type=%s name='%s'"
2330                                        " config_methods=0x%x"
2331                                        " dev_capab=0x%x"
2332                                        " group_capab=0x%x"
2333                                        " adv_id=%x asp_svc=%s%s",
2334                                        MAC2STR(addr),
2335                                        MAC2STR(info->p2p_device_addr),
2336                                        wps_dev_type_bin2str(
2337                                                info->pri_dev_type,
2338                                                devtype, sizeof(devtype)),
2339                                        info->device_name, methods,
2340                                        info->dev_capab, info->group_capab,
2341                                        id, str,
2342                                        info->vendor_elems ?
2343                                        " vendor_elems=1" : "");
2344                 }
2345                 goto done;
2346         }
2347
2348         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2349                        " p2p_dev_addr=" MACSTR
2350                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2351                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2352                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2353                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2354                                             sizeof(devtype)),
2355                        info->device_name, info->config_methods,
2356                        info->dev_capab, info->group_capab,
2357                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2358                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2359                        info->vendor_elems ? " vendor_elems=1" : "",
2360                        new_device);
2361
2362 done:
2363         os_free(wfd_dev_info_hex);
2364 #endif /* CONFIG_NO_STDOUT_DEBUG */
2365
2366         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2367 }
2368
2369
2370 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2371 {
2372         struct wpa_supplicant *wpa_s = ctx;
2373
2374         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2375                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2376
2377         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2378 }
2379
2380
2381 static void wpas_find_stopped(void *ctx)
2382 {
2383         struct wpa_supplicant *wpa_s = ctx;
2384
2385         if (wpa_s->p2p_scan_work && wpas_abort_ongoing_scan(wpa_s) < 0)
2386                 wpa_printf(MSG_DEBUG, "P2P: Abort ongoing scan failed");
2387
2388         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2389         wpas_notify_p2p_find_stopped(wpa_s);
2390 }
2391
2392
2393 struct wpas_p2p_listen_work {
2394         unsigned int freq;
2395         unsigned int duration;
2396         struct wpabuf *probe_resp_ie;
2397 };
2398
2399
2400 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2401 {
2402         if (lwork == NULL)
2403                 return;
2404         wpabuf_free(lwork->probe_resp_ie);
2405         os_free(lwork);
2406 }
2407
2408
2409 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2410 {
2411         struct wpas_p2p_listen_work *lwork;
2412
2413         if (!wpa_s->p2p_listen_work)
2414                 return;
2415
2416         lwork = wpa_s->p2p_listen_work->ctx;
2417         wpas_p2p_listen_work_free(lwork);
2418         radio_work_done(wpa_s->p2p_listen_work);
2419         wpa_s->p2p_listen_work = NULL;
2420 }
2421
2422
2423 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2424 {
2425         struct wpa_supplicant *wpa_s = work->wpa_s;
2426         struct wpas_p2p_listen_work *lwork = work->ctx;
2427         unsigned int duration;
2428
2429         if (deinit) {
2430                 if (work->started) {
2431                         wpa_s->p2p_listen_work = NULL;
2432                         wpas_stop_listen(wpa_s);
2433                 }
2434                 wpas_p2p_listen_work_free(lwork);
2435                 return;
2436         }
2437
2438         wpa_s->p2p_listen_work = work;
2439
2440         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2441
2442         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2443                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2444                            "report received Probe Request frames");
2445                 wpas_p2p_listen_work_done(wpa_s);
2446                 return;
2447         }
2448
2449         wpa_s->pending_listen_freq = lwork->freq;
2450         wpa_s->pending_listen_duration = lwork->duration;
2451
2452         duration = lwork->duration;
2453 #ifdef CONFIG_TESTING_OPTIONS
2454         if (wpa_s->extra_roc_dur) {
2455                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2456                            duration, duration + wpa_s->extra_roc_dur);
2457                 duration += wpa_s->extra_roc_dur;
2458         }
2459 #endif /* CONFIG_TESTING_OPTIONS */
2460
2461         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2462                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2463                            "to remain on channel (%u MHz) for Listen "
2464                            "state", lwork->freq);
2465                 wpas_p2p_listen_work_done(wpa_s);
2466                 wpa_s->pending_listen_freq = 0;
2467                 return;
2468         }
2469         wpa_s->off_channel_freq = 0;
2470         wpa_s->roc_waiting_drv_freq = lwork->freq;
2471 }
2472
2473
2474 static int wpas_start_listen(void *ctx, unsigned int freq,
2475                              unsigned int duration,
2476                              const struct wpabuf *probe_resp_ie)
2477 {
2478         struct wpa_supplicant *wpa_s = ctx;
2479         struct wpas_p2p_listen_work *lwork;
2480
2481         if (wpa_s->p2p_listen_work) {
2482                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2483                 return -1;
2484         }
2485
2486         lwork = os_zalloc(sizeof(*lwork));
2487         if (lwork == NULL)
2488                 return -1;
2489         lwork->freq = freq;
2490         lwork->duration = duration;
2491         if (probe_resp_ie) {
2492                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2493                 if (lwork->probe_resp_ie == NULL) {
2494                         wpas_p2p_listen_work_free(lwork);
2495                         return -1;
2496                 }
2497         }
2498
2499         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2500                            lwork) < 0) {
2501                 wpas_p2p_listen_work_free(lwork);
2502                 return -1;
2503         }
2504
2505         return 0;
2506 }
2507
2508
2509 static void wpas_stop_listen(void *ctx)
2510 {
2511         struct wpa_supplicant *wpa_s = ctx;
2512         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2513                 wpa_drv_cancel_remain_on_channel(wpa_s);
2514                 wpa_s->off_channel_freq = 0;
2515                 wpa_s->roc_waiting_drv_freq = 0;
2516         }
2517         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2518
2519         /*
2520          * Don't cancel Probe Request RX reporting for a connected P2P Client
2521          * handling Probe Request frames.
2522          */
2523         if (!wpa_s->p2p_cli_probe)
2524                 wpa_drv_probe_req_report(wpa_s, 0);
2525
2526         wpas_p2p_listen_work_done(wpa_s);
2527 }
2528
2529
2530 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2531                                 unsigned int freq)
2532 {
2533         struct wpa_supplicant *wpa_s = ctx;
2534         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2535                                  freq);
2536 }
2537
2538
2539 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2540                                          const u8 *peer, const char *params,
2541                                          unsigned int generated_pin)
2542 {
2543         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2544                        " %08d%s", MAC2STR(peer), generated_pin, params);
2545 }
2546
2547
2548 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2549                                         const u8 *peer, const char *params)
2550 {
2551         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2552                        "%s", MAC2STR(peer), params);
2553 }
2554
2555
2556 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2557                                const u8 *dev_addr, const u8 *pri_dev_type,
2558                                const char *dev_name, u16 supp_config_methods,
2559                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2560                                size_t group_id_len)
2561 {
2562         struct wpa_supplicant *wpa_s = ctx;
2563         char devtype[WPS_DEV_TYPE_BUFSIZE];
2564         char params[300];
2565         u8 empty_dev_type[8];
2566         unsigned int generated_pin = 0;
2567         struct wpa_supplicant *group = NULL;
2568         int res;
2569
2570         if (group_id) {
2571                 for (group = wpa_s->global->ifaces; group; group = group->next)
2572                 {
2573                         struct wpa_ssid *s = group->current_ssid;
2574                         if (s != NULL &&
2575                             s->mode == WPAS_MODE_P2P_GO &&
2576                             group_id_len - ETH_ALEN == s->ssid_len &&
2577                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2578                                       s->ssid_len) == 0)
2579                                 break;
2580                 }
2581         }
2582
2583         if (pri_dev_type == NULL) {
2584                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2585                 pri_dev_type = empty_dev_type;
2586         }
2587         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2588                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2589                           "dev_capab=0x%x group_capab=0x%x%s%s",
2590                           MAC2STR(dev_addr),
2591                           wps_dev_type_bin2str(pri_dev_type, devtype,
2592                                                sizeof(devtype)),
2593                           dev_name, supp_config_methods, dev_capab, group_capab,
2594                           group ? " group=" : "",
2595                           group ? group->ifname : "");
2596         if (os_snprintf_error(sizeof(params), res))
2597                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2598         params[sizeof(params) - 1] = '\0';
2599
2600         if (config_methods & WPS_CONFIG_DISPLAY) {
2601                 if (wps_generate_pin(&generated_pin) < 0) {
2602                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2603                         wpas_notify_p2p_provision_discovery(
2604                                 wpa_s, peer, 0 /* response */,
2605                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2606                         return;
2607                 }
2608                 wpas_prov_disc_local_display(wpa_s, peer, params,
2609                                              generated_pin);
2610         } else if (config_methods & WPS_CONFIG_KEYPAD)
2611                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2612         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2613                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2614                                MACSTR "%s", MAC2STR(peer), params);
2615
2616         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2617                                             P2P_PROV_DISC_SUCCESS,
2618                                             config_methods, generated_pin);
2619 }
2620
2621
2622 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2623 {
2624         struct wpa_supplicant *wpa_s = ctx;
2625         unsigned int generated_pin = 0;
2626         char params[20];
2627
2628         if (wpa_s->pending_pd_before_join &&
2629             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2630              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2631                 wpa_s->pending_pd_before_join = 0;
2632                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2633                            "join-existing-group operation");
2634                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2635                 return;
2636         }
2637
2638         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2639             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2640                 int res;
2641
2642                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2643                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2644                 if (os_snprintf_error(sizeof(params), res))
2645                         params[sizeof(params) - 1] = '\0';
2646         } else
2647                 params[0] = '\0';
2648
2649         if (config_methods & WPS_CONFIG_DISPLAY)
2650                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2651         else if (config_methods & WPS_CONFIG_KEYPAD) {
2652                 if (wps_generate_pin(&generated_pin) < 0) {
2653                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2654                         wpas_notify_p2p_provision_discovery(
2655                                 wpa_s, peer, 0 /* response */,
2656                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2657                         return;
2658                 }
2659                 wpas_prov_disc_local_display(wpa_s, peer, params,
2660                                              generated_pin);
2661         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2662                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2663                                MACSTR "%s", MAC2STR(peer), params);
2664
2665         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2666                                             P2P_PROV_DISC_SUCCESS,
2667                                             config_methods, generated_pin);
2668 }
2669
2670
2671 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2672                                 enum p2p_prov_disc_status status,
2673                                 u32 adv_id, const u8 *adv_mac,
2674                                 const char *deferred_session_resp)
2675 {
2676         struct wpa_supplicant *wpa_s = ctx;
2677
2678         if (wpa_s->p2p_fallback_to_go_neg) {
2679                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2680                         "failed - fall back to GO Negotiation");
2681                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
2682                                P2P_EVENT_FALLBACK_TO_GO_NEG
2683                                "reason=PD-failed");
2684                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2685                 return;
2686         }
2687
2688         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2689                 wpa_s->pending_pd_before_join = 0;
2690                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2691                            "join-existing-group operation (no ACK for PD "
2692                            "Req attempts)");
2693                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2694                 return;
2695         }
2696
2697         if (adv_id && adv_mac && deferred_session_resp) {
2698                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2699                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2700                                " deferred_session_resp='%s'",
2701                                MAC2STR(peer), status, adv_id,
2702                                deferred_session_resp);
2703         } else if (adv_id && adv_mac) {
2704                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2705                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2706                                MAC2STR(peer), status, adv_id);
2707         } else {
2708                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2709                                " p2p_dev_addr=" MACSTR " status=%d",
2710                                MAC2STR(peer), status);
2711         }
2712
2713         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2714                                             status, 0, 0);
2715 }
2716
2717
2718 static int freq_included(struct wpa_supplicant *wpa_s,
2719                          const struct p2p_channels *channels,
2720                          unsigned int freq)
2721 {
2722         if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2723             wpas_p2p_go_is_peer_freq(wpa_s, freq))
2724                 return 1;
2725         return 0;
2726 }
2727
2728
2729 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2730 {
2731         unsigned int num = P2P_MAX_CHANNELS;
2732         int *common_freqs;
2733         int ret;
2734
2735         p2p_go_dump_common_freqs(wpa_s);
2736         common_freqs = os_calloc(num, sizeof(int));
2737         if (!common_freqs)
2738                 return;
2739
2740         ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2741         if (ret < 0) {
2742                 wpa_dbg(wpa_s, MSG_DEBUG,
2743                         "P2P: Failed to get group common freqs");
2744                 os_free(common_freqs);
2745                 return;
2746         }
2747
2748         os_free(wpa_s->p2p_group_common_freqs);
2749         wpa_s->p2p_group_common_freqs = common_freqs;
2750         wpa_s->p2p_group_common_freqs_num = num;
2751         p2p_go_dump_common_freqs(wpa_s);
2752 }
2753
2754
2755 /*
2756  * Check if the given frequency is one of the possible operating frequencies
2757  * set after the completion of the GO Negotiation.
2758  */
2759 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2760 {
2761         unsigned int i;
2762
2763         p2p_go_dump_common_freqs(wpa_s);
2764
2765         /* assume no restrictions */
2766         if (!wpa_s->p2p_group_common_freqs_num)
2767                 return 1;
2768
2769         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2770                 if (wpa_s->p2p_group_common_freqs[i] == freq)
2771                         return 1;
2772         }
2773         return 0;
2774 }
2775
2776
2777 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2778                                struct sta_info *sta, void *ctx)
2779 {
2780         int *ecsa_support = ctx;
2781
2782         *ecsa_support &= sta->ecsa_supported;
2783
2784         return 0;
2785 }
2786
2787
2788 /* Check if all the peers support eCSA */
2789 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2790 {
2791         int ecsa_support = 1;
2792
2793         ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2794                         &ecsa_support);
2795
2796         return ecsa_support;
2797 }
2798
2799
2800 /**
2801  * Pick the best frequency to use from all the currently used frequencies.
2802  */
2803 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2804                                         struct wpa_used_freq_data *freqs,
2805                                         unsigned int num)
2806 {
2807         unsigned int i, c;
2808
2809         /* find a candidate freq that is supported by P2P */
2810         for (c = 0; c < num; c++)
2811                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2812                         break;
2813
2814         if (c == num)
2815                 return 0;
2816
2817         /* once we have a candidate, try to find a 'better' one */
2818         for (i = c + 1; i < num; i++) {
2819                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2820                         continue;
2821
2822                 /*
2823                  * 1. Infrastructure station interfaces have higher preference.
2824                  * 2. P2P Clients have higher preference.
2825                  * 3. All others.
2826                  */
2827                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2828                         c = i;
2829                         break;
2830                 }
2831
2832                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2833                         c = i;
2834         }
2835         return freqs[c].freq;
2836 }
2837
2838
2839 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2840                                   const u8 *go_dev_addr, const u8 *ssid,
2841                                   size_t ssid_len, int *go, u8 *group_bssid,
2842                                   int *force_freq, int persistent_group,
2843                                   const struct p2p_channels *channels,
2844                                   int dev_pw_id)
2845 {
2846         struct wpa_supplicant *wpa_s = ctx;
2847         struct wpa_ssid *s;
2848         struct wpa_used_freq_data *freqs;
2849         struct wpa_supplicant *grp;
2850         int best_freq;
2851
2852         if (!persistent_group) {
2853                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2854                            " to join an active group (SSID: %s)",
2855                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2856                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2857                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2858                      == 0 ||
2859                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2860                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2861                                    "authorized invitation");
2862                         goto accept_inv;
2863                 }
2864
2865 #ifdef CONFIG_WPS_NFC
2866                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2867                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2868                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2869                         wpa_s->p2p_wps_method = WPS_NFC;
2870                         wpa_s->pending_join_wps_method = WPS_NFC;
2871                         os_memcpy(wpa_s->pending_join_dev_addr,
2872                                   go_dev_addr, ETH_ALEN);
2873                         os_memcpy(wpa_s->pending_join_iface_addr,
2874                                   bssid, ETH_ALEN);
2875                         goto accept_inv;
2876                 }
2877 #endif /* CONFIG_WPS_NFC */
2878
2879                 /*
2880                  * Do not accept the invitation automatically; notify user and
2881                  * request approval.
2882                  */
2883                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2884         }
2885
2886         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2887         if (grp) {
2888                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2889                            "running persistent group");
2890                 if (*go)
2891                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2892                 goto accept_inv;
2893         }
2894
2895         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2896             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2897                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2898                            "invitation to re-invoke a persistent group");
2899                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2900         } else if (!wpa_s->conf->persistent_reconnect)
2901                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2902
2903         for (s = wpa_s->conf->ssid; s; s = s->next) {
2904                 if (s->disabled == 2 &&
2905                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2906                     s->ssid_len == ssid_len &&
2907                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2908                         break;
2909         }
2910
2911         if (!s) {
2912                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2913                            " requested reinvocation of an unknown group",
2914                            MAC2STR(sa));
2915                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2916         }
2917
2918         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2919                 *go = 1;
2920                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2921                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2922                                    "interface is already in use - reject "
2923                                    "invitation");
2924                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2925                 }
2926                 if (wpa_s->p2p_mgmt)
2927                         os_memcpy(group_bssid, wpa_s->parent->own_addr,
2928                                   ETH_ALEN);
2929                 else
2930                         os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2931         } else if (s->mode == WPAS_MODE_P2P_GO) {
2932                 *go = 1;
2933                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2934                 {
2935                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2936                                    "interface address for the group");
2937                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2938                 }
2939                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2940                           ETH_ALEN);
2941         }
2942
2943 accept_inv:
2944         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2945
2946         best_freq = 0;
2947         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2948                           sizeof(struct wpa_used_freq_data));
2949         if (freqs) {
2950                 int num_channels = wpa_s->num_multichan_concurrent;
2951                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2952                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2953                 os_free(freqs);
2954         }
2955
2956         /* Get one of the frequencies currently in use */
2957         if (best_freq > 0) {
2958                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2959                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2960
2961                 if (wpa_s->num_multichan_concurrent < 2 ||
2962                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2963                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2964                         *force_freq = best_freq;
2965                 }
2966         }
2967
2968         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2969             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2970                 if (*go == 0) {
2971                         /* We are the client */
2972                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2973                                    "running a GO but we are capable of MCC, "
2974                                    "figure out the best channel to use");
2975                         *force_freq = 0;
2976                 } else if (!freq_included(wpa_s, channels, *force_freq)) {
2977                         /* We are the GO, and *force_freq is not in the
2978                          * intersection */
2979                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2980                                    "in intersection but we are capable of MCC, "
2981                                    "figure out the best channel to use",
2982                                    *force_freq);
2983                         *force_freq = 0;
2984                 }
2985         }
2986
2987         return P2P_SC_SUCCESS;
2988 }
2989
2990
2991 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2992                                      const u8 *ssid, size_t ssid_len,
2993                                      const u8 *go_dev_addr, u8 status,
2994                                      int op_freq)
2995 {
2996         struct wpa_supplicant *wpa_s = ctx;
2997         struct wpa_ssid *s;
2998
2999         for (s = wpa_s->conf->ssid; s; s = s->next) {
3000                 if (s->disabled == 2 &&
3001                     s->ssid_len == ssid_len &&
3002                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3003                         break;
3004         }
3005
3006         if (status == P2P_SC_SUCCESS) {
3007                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3008                            " was accepted; op_freq=%d MHz, SSID=%s",
3009                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3010                 if (s) {
3011                         int go = s->mode == WPAS_MODE_P2P_GO;
3012                         if (go) {
3013                                 wpa_msg_global(wpa_s, MSG_INFO,
3014                                                P2P_EVENT_INVITATION_ACCEPTED
3015                                                "sa=" MACSTR
3016                                                " persistent=%d freq=%d",
3017                                                MAC2STR(sa), s->id, op_freq);
3018                         } else {
3019                                 wpa_msg_global(wpa_s, MSG_INFO,
3020                                                P2P_EVENT_INVITATION_ACCEPTED
3021                                                "sa=" MACSTR
3022                                                " persistent=%d",
3023                                                MAC2STR(sa), s->id);
3024                         }
3025                         wpas_p2p_group_add_persistent(
3026                                 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL,
3027                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
3028                                 1);
3029                 } else if (bssid) {
3030                         wpa_s->user_initiated_pd = 0;
3031                         wpa_msg_global(wpa_s, MSG_INFO,
3032                                        P2P_EVENT_INVITATION_ACCEPTED
3033                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3034                                        " bssid=" MACSTR " unknown-network",
3035                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3036                                        MAC2STR(bssid));
3037                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3038                                       wpa_s->p2p_wps_method, 0, op_freq,
3039                                       ssid, ssid_len);
3040                 }
3041                 return;
3042         }
3043
3044         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3045                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3046                            " was rejected (status %u)", MAC2STR(sa), status);
3047                 return;
3048         }
3049
3050         if (!s) {
3051                 if (bssid) {
3052                         wpa_msg_global(wpa_s, MSG_INFO,
3053                                        P2P_EVENT_INVITATION_RECEIVED
3054                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3055                                        " bssid=" MACSTR " unknown-network",
3056                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3057                                        MAC2STR(bssid));
3058                 } else {
3059                         wpa_msg_global(wpa_s, MSG_INFO,
3060                                        P2P_EVENT_INVITATION_RECEIVED
3061                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3062                                        " unknown-network",
3063                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3064                 }
3065                 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3066                                                     bssid, 0, op_freq);
3067                 return;
3068         }
3069
3070         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3071                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3072                                "sa=" MACSTR " persistent=%d freq=%d",
3073                                MAC2STR(sa), s->id, op_freq);
3074         } else {
3075                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3076                                "sa=" MACSTR " persistent=%d",
3077                                MAC2STR(sa), s->id);
3078         }
3079         wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3080                                             s->id, op_freq);
3081 }
3082
3083
3084 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3085                                         struct wpa_ssid *ssid,
3086                                         const u8 *peer, int inv)
3087 {
3088         size_t i;
3089         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3090
3091         if (ssid == NULL)
3092                 return;
3093
3094         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3095                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3096                               ETH_ALEN) == 0)
3097                         break;
3098         }
3099         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3100                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3101                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3102                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3103                                    "due to invitation result", ssid->id);
3104                         wpas_notify_network_removed(wpa_s, ssid);
3105                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3106                         return;
3107                 }
3108                 return; /* Peer not found in client list */
3109         }
3110
3111         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3112                    "group %d client list%s",
3113                    MAC2STR(peer), ssid->id,
3114                    inv ? " due to invitation result" : "");
3115         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3116                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3117                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3118         ssid->num_p2p_clients--;
3119         if (p2p_wpa_s->conf->update_config &&
3120             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3121                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3122 }
3123
3124
3125 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3126                                           const u8 *peer)
3127 {
3128         struct wpa_ssid *ssid;
3129
3130         wpa_s = wpa_s->global->p2p_invite_group;
3131         if (wpa_s == NULL)
3132                 return; /* No known invitation group */
3133         ssid = wpa_s->current_ssid;
3134         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3135             !ssid->p2p_persistent_group)
3136                 return; /* Not operating as a GO in persistent group */
3137         ssid = wpas_p2p_get_persistent(wpa_s->p2pdev, peer,
3138                                        ssid->ssid, ssid->ssid_len);
3139         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3140 }
3141
3142
3143 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3144                                    const struct p2p_channels *channels,
3145                                    const u8 *peer, int neg_freq,
3146                                    int peer_oper_freq)
3147 {
3148         struct wpa_supplicant *wpa_s = ctx;
3149         struct wpa_ssid *ssid;
3150         int freq;
3151
3152         if (bssid) {
3153                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3154                                "status=%d " MACSTR,
3155                                status, MAC2STR(bssid));
3156         } else {
3157                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3158                                "status=%d ", status);
3159         }
3160         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3161
3162         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3163                    status, MAC2STR(peer));
3164         if (wpa_s->pending_invite_ssid_id == -1) {
3165                 struct wpa_supplicant *group_if =
3166                         wpa_s->global->p2p_invite_group;
3167
3168                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3169                         wpas_remove_persistent_client(wpa_s, peer);
3170
3171                 /*
3172                  * Invitation to an active group. If this is successful and we
3173                  * are the GO, set the client wait to postpone some concurrent
3174                  * operations and to allow provisioning and connection to happen
3175                  * more quickly.
3176                  */
3177                 if (status == P2P_SC_SUCCESS &&
3178                     group_if && group_if->current_ssid &&
3179                     group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3180                         os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3181 #ifdef CONFIG_TESTING_OPTIONS
3182                         if (group_if->p2p_go_csa_on_inv) {
3183                                 wpa_printf(MSG_DEBUG,
3184                                            "Testing: force P2P GO CSA after invitation");
3185                                 eloop_cancel_timeout(
3186                                         wpas_p2p_reconsider_moving_go,
3187                                         wpa_s, NULL);
3188                                 eloop_register_timeout(
3189                                         0, 50000,
3190                                         wpas_p2p_reconsider_moving_go,
3191                                         wpa_s, NULL);
3192                         }
3193 #endif /* CONFIG_TESTING_OPTIONS */
3194                 }
3195                 return;
3196         }
3197
3198         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3199                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3200                            "invitation exchange to indicate readiness for "
3201                            "re-invocation");
3202         }
3203
3204         if (status != P2P_SC_SUCCESS) {
3205                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3206                         ssid = wpa_config_get_network(
3207                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3208                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3209                 }
3210                 wpas_p2p_remove_pending_group_interface(wpa_s);
3211                 return;
3212         }
3213
3214         ssid = wpa_config_get_network(wpa_s->conf,
3215                                       wpa_s->pending_invite_ssid_id);
3216         if (ssid == NULL) {
3217                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3218                            "data matching with invitation");
3219                 return;
3220         }
3221
3222         /*
3223          * The peer could have missed our ctrl::ack frame for Invitation
3224          * Response and continue retransmitting the frame. To reduce the
3225          * likelihood of the peer not getting successful TX status for the
3226          * Invitation Response frame, wait a short time here before starting
3227          * the persistent group so that we will remain on the current channel to
3228          * acknowledge any possible retransmission from the peer.
3229          */
3230         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3231                 "starting persistent group");
3232         os_sleep(0, 50000);
3233
3234         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3235             freq_included(wpa_s, channels, neg_freq))
3236                 freq = neg_freq;
3237         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3238                  freq_included(wpa_s, channels, peer_oper_freq))
3239                 freq = peer_oper_freq;
3240         else
3241                 freq = 0;
3242
3243         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3244                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3245         wpas_p2p_group_add_persistent(wpa_s, ssid,
3246                                       ssid->mode == WPAS_MODE_P2P_GO,
3247                                       wpa_s->p2p_persistent_go_freq,
3248                                       freq,
3249                                       wpa_s->p2p_go_vht_center_freq2,
3250                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3251                                       wpa_s->p2p_go_max_oper_chwidth,
3252                                       channels,
3253                                       ssid->mode == WPAS_MODE_P2P_GO ?
3254                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3255                                       0, 1);
3256 }
3257
3258
3259 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3260                                     unsigned int freq)
3261 {
3262         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3263                 return 1;
3264         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3265 }
3266
3267
3268 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3269 {
3270         reg->channel[reg->channels] = chan;
3271         reg->channels++;
3272 }
3273
3274
3275 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3276                                      struct p2p_channels *chan,
3277                                      struct p2p_channels *cli_chan)
3278 {
3279         int i, cla = 0;
3280
3281         wpa_s->global->p2p_24ghz_social_channels = 1;
3282
3283         os_memset(cli_chan, 0, sizeof(*cli_chan));
3284
3285         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3286                    "band");
3287
3288         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3289         chan->reg_class[cla].reg_class = 81;
3290         chan->reg_class[cla].channels = 0;
3291         for (i = 0; i < 11; i++) {
3292                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3293                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3294         }
3295         if (chan->reg_class[cla].channels)
3296                 cla++;
3297
3298         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3299                    "band");
3300
3301         /* Operating class 115 - 5 GHz, channels 36-48 */
3302         chan->reg_class[cla].reg_class = 115;
3303         chan->reg_class[cla].channels = 0;
3304         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3305                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3306         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3307                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3308         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3309                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3310         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3311                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3312         if (chan->reg_class[cla].channels)
3313                 cla++;
3314
3315         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3316                    "band");
3317
3318         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3319         chan->reg_class[cla].reg_class = 124;
3320         chan->reg_class[cla].channels = 0;
3321         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3322                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3323         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3324                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3325         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3326                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3327         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3328                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3329         if (chan->reg_class[cla].channels)
3330                 cla++;
3331
3332         chan->reg_classes = cla;
3333         return 0;
3334 }
3335
3336
3337 enum chan_allowed {
3338         NOT_ALLOWED, NO_IR, ALLOWED
3339 };
3340
3341 static int has_channel(struct wpa_global *global,
3342                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3343 {
3344         int i;
3345         unsigned int freq;
3346
3347         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3348                 chan * 5;
3349         if (wpas_p2p_disallowed_freq(global, freq))
3350                 return NOT_ALLOWED;
3351
3352         for (i = 0; i < mode->num_channels; i++) {
3353                 if (mode->channels[i].chan == chan) {
3354                         if (flags)
3355                                 *flags = mode->channels[i].flag;
3356                         if (mode->channels[i].flag &
3357                             (HOSTAPD_CHAN_DISABLED |
3358                              HOSTAPD_CHAN_RADAR))
3359                                 return NOT_ALLOWED;
3360                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3361                                 return NO_IR;
3362                         return ALLOWED;
3363                 }
3364         }
3365
3366         return NOT_ALLOWED;
3367 }
3368
3369
3370 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3371                                      struct hostapd_hw_modes *mode,
3372                                      u8 channel)
3373 {
3374         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3375         unsigned int i;
3376
3377         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3378                 return 0;
3379
3380         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3381                 /*
3382                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3383                  * so the center channel is 6 channels away from the start/end.
3384                  */
3385                 if (channel >= center_channels[i] - 6 &&
3386                     channel <= center_channels[i] + 6)
3387                         return center_channels[i];
3388
3389         return 0;
3390 }
3391
3392
3393 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3394                                                struct hostapd_hw_modes *mode,
3395                                                u8 channel, u8 bw)
3396 {
3397         u8 center_chan;
3398         int i, flags;
3399         enum chan_allowed res, ret = ALLOWED;
3400
3401         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3402         if (!center_chan)
3403                 return NOT_ALLOWED;
3404         if (center_chan >= 58 && center_chan <= 138)
3405                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3406
3407         /* check all the channels are available */
3408         for (i = 0; i < 4; i++) {
3409                 int adj_chan = center_chan - 6 + i * 4;
3410
3411                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3412                 if (res == NOT_ALLOWED)
3413                         return NOT_ALLOWED;
3414                 if (res == NO_IR)
3415                         ret = NO_IR;
3416
3417                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3418                         return NOT_ALLOWED;
3419                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3420                         return NOT_ALLOWED;
3421                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3422                         return NOT_ALLOWED;
3423                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3424                         return NOT_ALLOWED;
3425         }
3426
3427         return ret;
3428 }
3429
3430
3431 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3432                                      struct hostapd_hw_modes *mode,
3433                                      u8 channel)
3434 {
3435         u8 center_channels[] = { 50, 114 };
3436         unsigned int i;
3437
3438         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3439                 return 0;
3440
3441         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3442                 /*
3443                  * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3444                  * so the center channel is 14 channels away from the start/end.
3445                  */
3446                 if (channel >= center_channels[i] - 14 &&
3447                     channel <= center_channels[i] + 14)
3448                         return center_channels[i];
3449
3450         return 0;
3451 }
3452
3453
3454 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3455                                                struct hostapd_hw_modes *mode,
3456                                                u8 channel, u8 bw)
3457 {
3458         u8 center_chan;
3459         int i, flags;
3460         enum chan_allowed res, ret = ALLOWED;
3461
3462         center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3463         if (!center_chan)
3464                 return NOT_ALLOWED;
3465         /* VHT 160 MHz uses DFS channels in most countries. */
3466
3467         /* Check all the channels are available */
3468         for (i = 0; i < 8; i++) {
3469                 int adj_chan = center_chan - 14 + i * 4;
3470
3471                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3472                 if (res == NOT_ALLOWED)
3473                         return NOT_ALLOWED;
3474
3475                 if (res == NO_IR)
3476                         ret = NO_IR;
3477
3478                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3479                         return NOT_ALLOWED;
3480                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3481                         return NOT_ALLOWED;
3482                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3483                         return NOT_ALLOWED;
3484                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3485                         return NOT_ALLOWED;
3486                 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3487                         return NOT_ALLOWED;
3488                 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3489                         return NOT_ALLOWED;
3490                 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3491                         return NOT_ALLOWED;
3492                 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3493                         return NOT_ALLOWED;
3494         }
3495
3496         return ret;
3497 }
3498
3499
3500 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3501                                                  struct hostapd_hw_modes *mode,
3502                                                  u8 channel, u8 bw)
3503 {
3504         int flag = 0;
3505         enum chan_allowed res, res2;
3506
3507         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3508         if (bw == BW40MINUS) {
3509                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3510                         return NOT_ALLOWED;
3511                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3512         } else if (bw == BW40PLUS) {
3513                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3514                         return NOT_ALLOWED;
3515                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3516         } else if (bw == BW80) {
3517                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3518         } else if (bw == BW160) {
3519                 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3520         }
3521
3522         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3523                 return NOT_ALLOWED;
3524         if (res == NO_IR || res2 == NO_IR)
3525                 return NO_IR;
3526         return res;
3527 }
3528
3529
3530 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3531                                    struct p2p_channels *chan,
3532                                    struct p2p_channels *cli_chan)
3533 {
3534         struct hostapd_hw_modes *mode;
3535         int cla, op, cli_cla;
3536
3537         if (wpa_s->hw.modes == NULL) {
3538                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3539                            "of all supported channels; assume dualband "
3540                            "support");
3541                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3542         }
3543
3544         cla = cli_cla = 0;
3545
3546         for (op = 0; global_op_class[op].op_class; op++) {
3547                 const struct oper_class_map *o = &global_op_class[op];
3548                 u8 ch;
3549                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3550
3551                 if (o->p2p == NO_P2P_SUPP)
3552                         continue;
3553
3554                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3555                 if (mode == NULL)
3556                         continue;
3557                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3558                         wpa_s->global->p2p_24ghz_social_channels = 1;
3559                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3560                         enum chan_allowed res;
3561                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3562                         if (res == ALLOWED) {
3563                                 if (reg == NULL) {
3564                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3565                                                    o->op_class);
3566                                         reg = &chan->reg_class[cla];
3567                                         cla++;
3568                                         reg->reg_class = o->op_class;
3569                                 }
3570                                 reg->channel[reg->channels] = ch;
3571                                 reg->channels++;
3572                         } else if (res == NO_IR &&
3573                                    wpa_s->conf->p2p_add_cli_chan) {
3574                                 if (cli_reg == NULL) {
3575                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3576                                                    o->op_class);
3577                                         cli_reg = &cli_chan->reg_class[cli_cla];
3578                                         cli_cla++;
3579                                         cli_reg->reg_class = o->op_class;
3580                                 }
3581                                 cli_reg->channel[cli_reg->channels] = ch;
3582                                 cli_reg->channels++;
3583                         }
3584                 }
3585                 if (reg) {
3586                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3587                                     reg->channel, reg->channels);
3588                 }
3589                 if (cli_reg) {
3590                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3591                                     cli_reg->channel, cli_reg->channels);
3592                 }
3593         }
3594
3595         chan->reg_classes = cla;
3596         cli_chan->reg_classes = cli_cla;
3597
3598         return 0;
3599 }
3600
3601
3602 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3603                            struct hostapd_hw_modes *mode, u8 channel)
3604 {
3605         int op;
3606         enum chan_allowed ret;
3607
3608         for (op = 0; global_op_class[op].op_class; op++) {
3609                 const struct oper_class_map *o = &global_op_class[op];
3610                 u8 ch;
3611
3612                 if (o->p2p == NO_P2P_SUPP)
3613                         continue;
3614
3615                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3616                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3617                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3618                             ch != channel)
3619                                 continue;
3620                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3621                         if (ret == ALLOWED)
3622                                 return (o->bw == BW40MINUS) ? -1 : 1;
3623                 }
3624         }
3625         return 0;
3626 }
3627
3628
3629 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3630                               struct hostapd_hw_modes *mode, u8 channel)
3631 {
3632         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3633                 return 0;
3634
3635         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3636 }
3637
3638
3639 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3640                                struct hostapd_hw_modes *mode, u8 channel)
3641 {
3642         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3643                 return 0;
3644         return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3645 }
3646
3647
3648 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3649                         size_t buf_len)
3650 {
3651         struct wpa_supplicant *wpa_s = ctx;
3652
3653         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3654                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3655                         break;
3656         }
3657         if (wpa_s == NULL)
3658                 return -1;
3659
3660         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3661 }
3662
3663
3664 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3665                                               const u8 *ssid, size_t ssid_len)
3666 {
3667         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3668                 struct wpa_ssid *s = wpa_s->current_ssid;
3669                 if (s == NULL)
3670                         continue;
3671                 if (s->mode != WPAS_MODE_P2P_GO &&
3672                     s->mode != WPAS_MODE_AP &&
3673                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3674                         continue;
3675                 if (s->ssid_len != ssid_len ||
3676                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3677                         continue;
3678                 return wpa_s;
3679         }
3680
3681         return NULL;
3682
3683 }
3684
3685
3686 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3687                                                   const u8 *peer_dev_addr)
3688 {
3689         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3690                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3691                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3692                         continue;
3693                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3694                         return wpa_s;
3695         }
3696
3697         return NULL;
3698 }
3699
3700
3701 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3702 {
3703         struct wpa_supplicant *wpa_s = ctx;
3704
3705         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3706 }
3707
3708
3709 static int wpas_is_concurrent_session_active(void *ctx)
3710 {
3711         struct wpa_supplicant *wpa_s = ctx;
3712         struct wpa_supplicant *ifs;
3713
3714         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3715                 if (ifs == wpa_s)
3716                         continue;
3717                 if (ifs->wpa_state > WPA_ASSOCIATED)
3718                         return 1;
3719         }
3720         return 0;
3721 }
3722
3723
3724 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3725 {
3726         struct wpa_supplicant *wpa_s = ctx;
3727         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3728 }
3729
3730
3731 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3732                                   const char *conf_p2p_dev)
3733 {
3734         struct wpa_interface iface;
3735         struct wpa_supplicant *p2pdev_wpa_s;
3736         char ifname[100];
3737         char force_name[100];
3738         int ret;
3739
3740         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3741                           wpa_s->ifname);
3742         if (os_snprintf_error(sizeof(ifname), ret))
3743                 return -1;
3744         force_name[0] = '\0';
3745         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3746         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3747                              force_name, wpa_s->pending_interface_addr, NULL);
3748         if (ret < 0) {
3749                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3750                 return ret;
3751         }
3752         os_strlcpy(wpa_s->pending_interface_name, ifname,
3753                    sizeof(wpa_s->pending_interface_name));
3754
3755         os_memset(&iface, 0, sizeof(iface));
3756         iface.p2p_mgmt = 1;
3757         iface.ifname = wpa_s->pending_interface_name;
3758         iface.driver = wpa_s->driver->name;
3759         iface.driver_param = wpa_s->conf->driver_param;
3760
3761         /*
3762          * If a P2P Device configuration file was given, use it as the interface
3763          * configuration file (instead of using parent's configuration file.
3764          */
3765         if (conf_p2p_dev) {
3766                 iface.confname = conf_p2p_dev;
3767                 iface.ctrl_interface = NULL;
3768         } else {
3769                 iface.confname = wpa_s->confname;
3770                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3771         }
3772
3773         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3774         if (!p2pdev_wpa_s) {
3775                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3776                 return -1;
3777         }
3778
3779         p2pdev_wpa_s->p2pdev = p2pdev_wpa_s;
3780         wpa_s->pending_interface_name[0] = '\0';
3781         return 0;
3782 }
3783
3784
3785 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3786                                const u8 *noa, size_t noa_len)
3787 {
3788         struct wpa_supplicant *wpa_s, *intf = ctx;
3789         char hex[100];
3790
3791         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3792                 if (wpa_s->waiting_presence_resp)
3793                         break;
3794         }
3795         if (!wpa_s) {
3796                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3797                 return;
3798         }
3799         wpa_s->waiting_presence_resp = 0;
3800
3801         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3802         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3803                 " status=%u noa=%s", MAC2STR(src), status, hex);
3804 }
3805
3806
3807 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3808                                      size_t ssid_len, u8 *go_dev_addr,
3809                                      u8 *ret_ssid, size_t *ret_ssid_len,
3810                                      u8 *intended_iface_addr)
3811 {
3812         struct wpa_supplicant *wpa_s = ctx;
3813         struct wpa_ssid *s;
3814
3815         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3816         if (s) {
3817                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3818                 *ret_ssid_len = s->ssid_len;
3819                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3820
3821                 if (s->mode != WPAS_MODE_P2P_GO) {
3822                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3823                 } else if (wpas_p2p_create_iface(wpa_s)) {
3824                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3825                                 return 0;
3826
3827                         os_memcpy(intended_iface_addr,
3828                                   wpa_s->pending_interface_addr, ETH_ALEN);
3829                 } else {
3830                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3831                                   ETH_ALEN);
3832                 }
3833                 return 1;
3834         }
3835
3836         return 0;
3837 }
3838
3839
3840 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3841                             u8 *ssid, size_t *ssid_len, int *group_iface,
3842                             unsigned int *freq)
3843 {
3844         struct wpa_supplicant *wpa_s = ctx;
3845         struct wpa_supplicant *go;
3846         struct wpa_ssid *s;
3847
3848         /*
3849          * group_iface will be set to 1 only if a dedicated interface for P2P
3850          * role is required. First, we try to reuse an active GO. However,
3851          * if it is not present, we will try to reactivate an existing
3852          * persistent group and set group_iface to 1, so the caller will know
3853          * that the pending interface should be used.
3854          */
3855         *group_iface = 0;
3856
3857         if (freq)
3858                 *freq = 0;
3859
3860         go = wpas_p2p_get_go_group(wpa_s);
3861         if (!go) {
3862                 s = wpas_p2p_get_persistent_go(wpa_s);
3863                 *group_iface = wpas_p2p_create_iface(wpa_s);
3864                 if (s)
3865                         os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3866                 else
3867                         return 0;
3868         } else {
3869                 s = go->current_ssid;
3870                 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3871                 if (freq)
3872                         *freq = go->assoc_freq;
3873         }
3874
3875         os_memcpy(ssid, s->ssid, s->ssid_len);
3876         *ssid_len = s->ssid_len;
3877
3878         return 1;
3879 }
3880
3881
3882 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3883                                     const u8 *ssid, size_t ssid_len)
3884 {
3885         struct wpa_supplicant *wpa_s = ctx;
3886         struct wpa_ssid *s;
3887         int save_config = 0;
3888         size_t i;
3889
3890         /* Start with our first choice of Persistent Groups */
3891         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3892                 if (go && ssid && ssid_len &&
3893                     s->ssid_len == ssid_len &&
3894                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3895                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3896                         break;
3897
3898                 /* Remove stale persistent group */
3899                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3900                         wpa_config_remove_network(wpa_s->conf, s->id);
3901                         save_config = 1;
3902                         continue;
3903                 }
3904
3905                 for (i = 0; i < s->num_p2p_clients; i++) {
3906                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3907                                       peer, ETH_ALEN) != 0)
3908                                 continue;
3909
3910                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3911                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3912                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3913                         break;
3914                 }
3915                 s->num_p2p_clients--;
3916                 save_config = 1;
3917         }
3918
3919         if (save_config)
3920                 p2p_config_write(wpa_s);
3921
3922         /* Return TRUE if valid SSID remains */
3923         return s != NULL;
3924 }
3925
3926
3927 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3928                                        const u8 *feat_cap, size_t feat_cap_len)
3929 {
3930         static const char pref[] = " feature_cap=";
3931         int ret;
3932
3933         buf[0] = '\0';
3934
3935         /*
3936          * We expect a feature capability to contain at least one byte to be
3937          * reported. The string buffer provided by the caller function is
3938          * expected to be big enough to contain all bytes of the attribute for
3939          * known specifications. This function truncates the reported bytes if
3940          * the feature capability data exceeds the string buffer size.
3941          */
3942         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3943                 return;
3944
3945         os_memcpy(buf, pref, sizeof(pref));
3946         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3947                                buf_len - sizeof(pref) + 1,
3948                                feat_cap, feat_cap_len);
3949
3950         if (ret != (2 * (int) feat_cap_len))
3951                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3952 }
3953
3954
3955 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3956                                     const u8 *adv_mac, const u8 *ses_mac,
3957                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3958                                     u8 conncap, int passwd_id,
3959                                     const u8 *persist_ssid,
3960                                     size_t persist_ssid_size, int response_done,
3961                                     int prov_start, const char *session_info,
3962                                     const u8 *feat_cap, size_t feat_cap_len,
3963                                     unsigned int freq,
3964                                     const u8 *group_ssid, size_t group_ssid_len)
3965 {
3966         struct wpa_supplicant *wpa_s = ctx;
3967         u8 mac[ETH_ALEN];
3968         struct wpa_ssid *persistent_go, *stale, *s = NULL;
3969         int save_config = 0;
3970         struct wpa_supplicant *go_wpa_s;
3971         char feat_cap_str[256];
3972
3973         if (!dev)
3974                 return;
3975
3976         os_memset(mac, 0, ETH_ALEN);
3977         if (!adv_mac)
3978                 adv_mac = mac;
3979         if (!ses_mac)
3980                 ses_mac = mac;
3981         if (!grp_mac)
3982                 grp_mac = mac;
3983
3984         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3985                                    feat_cap, feat_cap_len);
3986
3987         if (prov_start) {
3988                 if (session_info == NULL) {
3989                         wpa_msg_global(wpa_s, MSG_INFO,
3990                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3991                                        " adv_id=%x conncap=%x"
3992                                        " adv_mac=" MACSTR
3993                                        " session=%x mac=" MACSTR
3994                                        " dev_passwd_id=%d%s",
3995                                        MAC2STR(dev), adv_id, conncap,
3996                                        MAC2STR(adv_mac),
3997                                        ses_id, MAC2STR(ses_mac),
3998                                        passwd_id, feat_cap_str);
3999                 } else {
4000                         wpa_msg_global(wpa_s, MSG_INFO,
4001                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
4002                                        " adv_id=%x conncap=%x"
4003                                        " adv_mac=" MACSTR
4004                                        " session=%x mac=" MACSTR
4005                                        " dev_passwd_id=%d info='%s'%s",
4006                                        MAC2STR(dev), adv_id, conncap,
4007                                        MAC2STR(adv_mac),
4008                                        ses_id, MAC2STR(ses_mac),
4009                                        passwd_id, session_info, feat_cap_str);
4010                 }
4011                 return;
4012         }
4013
4014         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
4015         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4016
4017         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4018                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4019                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4020
4021                 if (persistent_go && !persistent_go->num_p2p_clients) {
4022                         /* remove empty persistent GO */
4023                         wpa_config_remove_network(wpa_s->conf,
4024                                                   persistent_go->id);
4025                 }
4026
4027                 wpa_msg_global(wpa_s, MSG_INFO,
4028                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4029                                " status=%d"
4030                                " adv_id=%x adv_mac=" MACSTR
4031                                " session=%x mac=" MACSTR "%s",
4032                                MAC2STR(dev), status,
4033                                adv_id, MAC2STR(adv_mac),
4034                                ses_id, MAC2STR(ses_mac), feat_cap_str);
4035                 return;
4036         }
4037
4038         /* Clean up stale persistent groups with this device */
4039         if (persist_ssid && persist_ssid_size)
4040                 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4041                                             persist_ssid_size);
4042
4043         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4044             is_zero_ether_addr(grp_mac)) {
4045                 wpa_dbg(wpa_s, MSG_ERROR,
4046                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4047                 return;
4048         }
4049
4050         for (;;) {
4051                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4052                 if (!stale)
4053                         break;
4054
4055                 if (s && s->ssid_len == stale->ssid_len &&
4056                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4057                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4058                         break;
4059
4060                 /* Remove stale persistent group */
4061                 if (stale->mode != WPAS_MODE_P2P_GO ||
4062                     stale->num_p2p_clients <= 1) {
4063                         wpa_config_remove_network(wpa_s->conf, stale->id);
4064                 } else {
4065                         size_t i;
4066
4067                         for (i = 0; i < stale->num_p2p_clients; i++) {
4068                                 if (os_memcmp(stale->p2p_client_list +
4069                                               i * ETH_ALEN,
4070                                               dev, ETH_ALEN) == 0) {
4071                                         os_memmove(stale->p2p_client_list +
4072                                                    i * ETH_ALEN,
4073                                                    stale->p2p_client_list +
4074                                                    (i + 1) * ETH_ALEN,
4075                                                    (stale->num_p2p_clients -
4076                                                     i - 1) * ETH_ALEN);
4077                                         break;
4078                                 }
4079                         }
4080                         stale->num_p2p_clients--;
4081                 }
4082                 save_config = 1;
4083         }
4084
4085         if (save_config)
4086                 p2p_config_write(wpa_s);
4087
4088         if (s) {
4089                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4090                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4091
4092                 if (persistent_go && s != persistent_go &&
4093                     !persistent_go->num_p2p_clients) {
4094                         /* remove empty persistent GO */
4095                         wpa_config_remove_network(wpa_s->conf,
4096                                                   persistent_go->id);
4097                         /* Save config */
4098                 }
4099
4100                 wpa_msg_global(wpa_s, MSG_INFO,
4101                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4102                                " status=%d"
4103                                " adv_id=%x adv_mac=" MACSTR
4104                                " session=%x mac=" MACSTR
4105                                " persist=%d%s",
4106                                MAC2STR(dev), status,
4107                                adv_id, MAC2STR(adv_mac),
4108                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4109                 return;
4110         }
4111
4112         if (conncap == P2PS_SETUP_GROUP_OWNER) {
4113                 /*
4114                  * We need to copy the interface name. Simply saving a
4115                  * pointer isn't enough, since if we use pending_interface_name
4116                  * it will be overwritten when the group is added.
4117                  */
4118                 char go_ifname[100];
4119
4120                 go_ifname[0] = '\0';
4121                 if (!go_wpa_s) {
4122                         wpa_s->global->pending_p2ps_group = 1;
4123                         wpa_s->global->pending_p2ps_group_freq = freq;
4124
4125                         if (!wpas_p2p_create_iface(wpa_s))
4126                                 os_memcpy(go_ifname, wpa_s->ifname,
4127                                           sizeof(go_ifname));
4128                         else if (wpa_s->pending_interface_name[0])
4129                                 os_memcpy(go_ifname,
4130                                           wpa_s->pending_interface_name,
4131                                           sizeof(go_ifname));
4132
4133                         if (!go_ifname[0]) {
4134                                 wpas_p2ps_prov_complete(
4135                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4136                                         dev, adv_mac, ses_mac,
4137                                         grp_mac, adv_id, ses_id, 0, 0,
4138                                         NULL, 0, 0, 0, NULL, NULL, 0, 0,
4139                                         NULL, 0);
4140                                 return;
4141                         }
4142
4143                         /* If PD Resp complete, start up the GO */
4144                         if (response_done && persistent_go) {
4145                                 wpas_p2p_group_add_persistent(
4146                                         wpa_s, persistent_go,
4147                                         0, 0, freq, 0, 0, 0, 0, NULL,
4148                                         persistent_go->mode ==
4149                                         WPAS_MODE_P2P_GO ?
4150                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4151                                         0, 0);
4152                         } else if (response_done) {
4153                                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4154                         }
4155
4156                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4157                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4158                                           ETH_ALEN);
4159                                 wpa_s->p2ps_method_config_any = 1;
4160                         }
4161                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4162                         os_memcpy(go_ifname, go_wpa_s->ifname,
4163                                   sizeof(go_ifname));
4164
4165                         if (is_zero_ether_addr(grp_mac)) {
4166                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4167                                         "P2P: Setting PIN-1 for ANY");
4168                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4169                                                           "12345670", NULL, 0,
4170                                                           0);
4171                         } else {
4172                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4173                                         "P2P: Setting PIN-1 for " MACSTR,
4174                                         MAC2STR(grp_mac));
4175                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4176                                                           "12345670", NULL, 0,
4177                                                           0);
4178                         }
4179
4180                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4181                         wpa_s->p2ps_method_config_any = 1;
4182                 }
4183
4184                 wpa_msg_global(wpa_s, MSG_INFO,
4185                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4186                                " status=%d conncap=%x"
4187                                " adv_id=%x adv_mac=" MACSTR
4188                                " session=%x mac=" MACSTR
4189                                " dev_passwd_id=%d go=%s%s",
4190                                MAC2STR(dev), status, conncap,
4191                                adv_id, MAC2STR(adv_mac),
4192                                ses_id, MAC2STR(ses_mac),
4193                                passwd_id, go_ifname, feat_cap_str);
4194                 return;
4195         }
4196
4197         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4198                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4199
4200         if (persistent_go && !persistent_go->num_p2p_clients) {
4201                 /* remove empty persistent GO */
4202                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4203         }
4204
4205         if (conncap == P2PS_SETUP_CLIENT) {
4206                 char ssid_hex[32 * 2 + 1];
4207
4208                 if (group_ssid)
4209                         wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex),
4210                                          group_ssid, group_ssid_len);
4211                 else
4212                         ssid_hex[0] = '\0';
4213                 wpa_msg_global(wpa_s, MSG_INFO,
4214                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4215                                " status=%d conncap=%x"
4216                                " adv_id=%x adv_mac=" MACSTR
4217                                " session=%x mac=" MACSTR
4218                                " dev_passwd_id=%d join=" MACSTR "%s%s%s",
4219                                MAC2STR(dev), status, conncap,
4220                                adv_id, MAC2STR(adv_mac),
4221                                ses_id, MAC2STR(ses_mac),
4222                                passwd_id, MAC2STR(grp_mac), feat_cap_str,
4223                                group_ssid ? " group_ssid=" : "", ssid_hex);
4224         } else {
4225                 wpa_msg_global(wpa_s, MSG_INFO,
4226                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4227                                " status=%d conncap=%x"
4228                                " adv_id=%x adv_mac=" MACSTR
4229                                " session=%x mac=" MACSTR
4230                                " dev_passwd_id=%d%s",
4231                                MAC2STR(dev), status, conncap,
4232                                adv_id, MAC2STR(adv_mac),
4233                                ses_id, MAC2STR(ses_mac),
4234                                passwd_id, feat_cap_str);
4235         }
4236 }
4237
4238
4239 static int _wpas_p2p_in_progress(void *ctx)
4240 {
4241         struct wpa_supplicant *wpa_s = ctx;
4242         return wpas_p2p_in_progress(wpa_s);
4243 }
4244
4245
4246 static int wpas_prov_disc_resp_cb(void *ctx)
4247 {
4248         struct wpa_supplicant *wpa_s = ctx;
4249         struct wpa_ssid *persistent_go;
4250         unsigned int freq;
4251
4252         if (!wpa_s->global->pending_p2ps_group)
4253                 return 0;
4254
4255         freq = wpa_s->global->pending_p2ps_group_freq;
4256         wpa_s->global->pending_p2ps_group_freq = 0;
4257         wpa_s->global->pending_p2ps_group = 0;
4258
4259         if (wpas_p2p_get_go_group(wpa_s))
4260                 return 0;
4261         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4262
4263         if (persistent_go) {
4264                 wpas_p2p_group_add_persistent(
4265                         wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL,
4266                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4267                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4268         } else {
4269                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4270         }
4271
4272         return 1;
4273 }
4274
4275
4276 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4277                                        unsigned int *len,
4278                                        unsigned int *freq_list)
4279 {
4280         struct wpa_supplicant *wpa_s = ctx;
4281
4282         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4283                                           WPA_IF_P2P_CLIENT, len, freq_list);
4284 }
4285
4286
4287 /**
4288  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4289  * @global: Pointer to global data from wpa_supplicant_init()
4290  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4291  * Returns: 0 on success, -1 on failure
4292  */
4293 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4294 {
4295         struct p2p_config p2p;
4296         int i;
4297
4298         if (wpa_s->conf->p2p_disabled)
4299                 return 0;
4300
4301         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4302                 return 0;
4303
4304         if (global->p2p)
4305                 return 0;
4306
4307         os_memset(&p2p, 0, sizeof(p2p));
4308         p2p.cb_ctx = wpa_s;
4309         p2p.debug_print = wpas_p2p_debug_print;
4310         p2p.p2p_scan = wpas_p2p_scan;
4311         p2p.send_action = wpas_send_action;
4312         p2p.send_action_done = wpas_send_action_done;
4313         p2p.go_neg_completed = wpas_go_neg_completed;
4314         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4315         p2p.dev_found = wpas_dev_found;
4316         p2p.dev_lost = wpas_dev_lost;
4317         p2p.find_stopped = wpas_find_stopped;
4318         p2p.start_listen = wpas_start_listen;
4319         p2p.stop_listen = wpas_stop_listen;
4320         p2p.send_probe_resp = wpas_send_probe_resp;
4321         p2p.sd_request = wpas_sd_request;
4322         p2p.sd_response = wpas_sd_response;
4323         p2p.prov_disc_req = wpas_prov_disc_req;
4324         p2p.prov_disc_resp = wpas_prov_disc_resp;
4325         p2p.prov_disc_fail = wpas_prov_disc_fail;
4326         p2p.invitation_process = wpas_invitation_process;
4327         p2p.invitation_received = wpas_invitation_received;
4328         p2p.invitation_result = wpas_invitation_result;
4329         p2p.get_noa = wpas_get_noa;
4330         p2p.go_connected = wpas_go_connected;
4331         p2p.presence_resp = wpas_presence_resp;
4332         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4333         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4334         p2p.get_persistent_group = wpas_get_persistent_group;
4335         p2p.get_go_info = wpas_get_go_info;
4336         p2p.remove_stale_groups = wpas_remove_stale_groups;
4337         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4338         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4339         p2p.p2ps_group_capability = p2ps_group_capability;
4340         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4341
4342         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4343         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4344         p2p.dev_name = wpa_s->conf->device_name;
4345         p2p.manufacturer = wpa_s->conf->manufacturer;
4346         p2p.model_name = wpa_s->conf->model_name;
4347         p2p.model_number = wpa_s->conf->model_number;
4348         p2p.serial_number = wpa_s->conf->serial_number;
4349         if (wpa_s->wps) {
4350                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4351                 p2p.config_methods = wpa_s->wps->config_methods;
4352         }
4353
4354         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4355                 wpa_printf(MSG_ERROR,
4356                            "P2P: Failed to configure supported channel list");
4357                 return -1;
4358         }
4359
4360         if (wpa_s->conf->p2p_listen_reg_class &&
4361             wpa_s->conf->p2p_listen_channel) {
4362                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4363                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4364                 p2p.channel_forced = 1;
4365         } else {
4366                 /*
4367                  * Pick one of the social channels randomly as the listen
4368                  * channel.
4369                  */
4370                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4371                                                  &p2p.channel) != 0) {
4372                         wpa_printf(MSG_INFO,
4373                                    "P2P: No social channels supported by the driver - do not enable P2P");
4374                         return 0;
4375                 }
4376                 p2p.channel_forced = 0;
4377         }
4378         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4379                    p2p.reg_class, p2p.channel);
4380
4381         if (wpa_s->conf->p2p_oper_reg_class &&
4382             wpa_s->conf->p2p_oper_channel) {
4383                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4384                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4385                 p2p.cfg_op_channel = 1;
4386                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4387                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4388
4389         } else {
4390                 /*
4391                  * Use random operation channel from 2.4 GHz band social
4392                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4393                  * other preference is indicated.
4394                  */
4395                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4396                                                  &p2p.op_channel) != 0) {
4397                         wpa_printf(MSG_ERROR,
4398                                    "P2P: Failed to select random social channel as operation channel");
4399                         return -1;
4400                 }
4401                 p2p.cfg_op_channel = 0;
4402                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4403                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4404         }
4405
4406         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4407                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4408                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4409         }
4410
4411         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4412                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4413                 p2p.country[2] = 0x04;
4414         } else
4415                 os_memcpy(p2p.country, "XX\x04", 3);
4416
4417         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4418                   WPS_DEV_TYPE_LEN);
4419
4420         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4421         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4422                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4423
4424         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4425                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4426
4427         p2p.max_peers = 100;
4428
4429         if (wpa_s->conf->p2p_ssid_postfix) {
4430                 p2p.ssid_postfix_len =
4431                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4432                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4433                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4434                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4435                           p2p.ssid_postfix_len);
4436         }
4437
4438         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4439
4440         p2p.max_listen = wpa_s->max_remain_on_chan;
4441
4442         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4443             wpa_s->conf->p2p_passphrase_len <= 63)
4444                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4445         else
4446                 p2p.passphrase_len = 8;
4447
4448         global->p2p = p2p_init(&p2p);
4449         if (global->p2p == NULL)
4450                 return -1;
4451         global->p2p_init_wpa_s = wpa_s;
4452
4453         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4454                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4455                         continue;
4456                 p2p_add_wps_vendor_extension(
4457                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4458         }
4459
4460         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4461
4462         return 0;
4463 }
4464
4465
4466 /**
4467  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4468  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4469  *
4470  * This function deinitialize per-interface P2P data.
4471  */
4472 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4473 {
4474         if (wpa_s->driver && wpa_s->drv_priv)
4475                 wpa_drv_probe_req_report(wpa_s, 0);
4476
4477         if (wpa_s->go_params) {
4478                 /* Clear any stored provisioning info */
4479                 p2p_clear_provisioning_info(
4480                         wpa_s->global->p2p,
4481                         wpa_s->go_params->peer_device_addr);
4482         }
4483
4484         os_free(wpa_s->go_params);
4485         wpa_s->go_params = NULL;
4486         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4487         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4488         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4489         wpa_s->p2p_long_listen = 0;
4490         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4491         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4492         wpas_p2p_remove_pending_group_interface(wpa_s);
4493         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4494         wpas_p2p_listen_work_done(wpa_s);
4495         if (wpa_s->p2p_send_action_work) {
4496                 os_free(wpa_s->p2p_send_action_work->ctx);
4497                 radio_work_done(wpa_s->p2p_send_action_work);
4498                 wpa_s->p2p_send_action_work = NULL;
4499         }
4500         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4501
4502         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4503         wpa_s->p2p_oob_dev_pw = NULL;
4504
4505         os_free(wpa_s->p2p_group_common_freqs);
4506         wpa_s->p2p_group_common_freqs = NULL;
4507         wpa_s->p2p_group_common_freqs_num = 0;
4508
4509         /* TODO: remove group interface from the driver if this wpa_s instance
4510          * is on top of a P2P group interface */
4511 }
4512
4513
4514 /**
4515  * wpas_p2p_deinit_global - Deinitialize global P2P module
4516  * @global: Pointer to global data from wpa_supplicant_init()
4517  *
4518  * This function deinitializes the global (per device) P2P module.
4519  */
4520 static void wpas_p2p_deinit_global(struct wpa_global *global)
4521 {
4522         struct wpa_supplicant *wpa_s, *tmp;
4523
4524         wpa_s = global->ifaces;
4525
4526         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4527
4528         /* Remove remaining P2P group interfaces */
4529         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4530                 wpa_s = wpa_s->next;
4531         while (wpa_s) {
4532                 tmp = global->ifaces;
4533                 while (tmp &&
4534                        (tmp == wpa_s ||
4535                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4536                         tmp = tmp->next;
4537                 }
4538                 if (tmp == NULL)
4539                         break;
4540                 /* Disconnect from the P2P group and deinit the interface */
4541                 wpas_p2p_disconnect(tmp);
4542         }
4543
4544         /*
4545          * Deinit GO data on any possibly remaining interface (if main
4546          * interface is used as GO).
4547          */
4548         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4549                 if (wpa_s->ap_iface)
4550                         wpas_p2p_group_deinit(wpa_s);
4551         }
4552
4553         p2p_deinit(global->p2p);
4554         global->p2p = NULL;
4555         global->p2p_init_wpa_s = NULL;
4556 }
4557
4558
4559 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4560 {
4561         if (wpa_s->conf->p2p_no_group_iface)
4562                 return 0; /* separate interface disabled per configuration */
4563         if (wpa_s->drv_flags &
4564             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4565              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4566                 return 1; /* P2P group requires a new interface in every case
4567                            */
4568         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4569                 return 0; /* driver does not support concurrent operations */
4570         if (wpa_s->global->ifaces->next)
4571                 return 1; /* more that one interface already in use */
4572         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4573                 return 1; /* this interface is already in use */
4574         return 0;
4575 }
4576
4577
4578 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4579                                  const u8 *peer_addr,
4580                                  enum p2p_wps_method wps_method,
4581                                  int go_intent, const u8 *own_interface_addr,
4582                                  unsigned int force_freq, int persistent_group,
4583                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4584 {
4585         if (persistent_group && wpa_s->conf->persistent_reconnect)
4586                 persistent_group = 2;
4587
4588         /*
4589          * Increase GO config timeout if HT40 is used since it takes some time
4590          * to scan channels for coex purposes before the BSS can be started.
4591          */
4592         p2p_set_config_timeout(wpa_s->global->p2p,
4593                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4594
4595         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4596                            go_intent, own_interface_addr, force_freq,
4597                            persistent_group, ssid ? ssid->ssid : NULL,
4598                            ssid ? ssid->ssid_len : 0,
4599                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4600                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4601                            0);
4602 }
4603
4604
4605 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4606                                 const u8 *peer_addr,
4607                                 enum p2p_wps_method wps_method,
4608                                 int go_intent, const u8 *own_interface_addr,
4609                                 unsigned int force_freq, int persistent_group,
4610                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4611 {
4612         if (persistent_group && wpa_s->conf->persistent_reconnect)
4613                 persistent_group = 2;
4614
4615         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4616                              go_intent, own_interface_addr, force_freq,
4617                              persistent_group, ssid ? ssid->ssid : NULL,
4618                              ssid ? ssid->ssid_len : 0, pref_freq,
4619                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4620                              0);
4621 }
4622
4623
4624 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4625 {
4626         wpa_s->p2p_join_scan_count++;
4627         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4628                    wpa_s->p2p_join_scan_count);
4629         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4630                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4631                            " for join operationg - stop join attempt",
4632                            MAC2STR(wpa_s->pending_join_iface_addr));
4633                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4634                 if (wpa_s->p2p_auto_pd) {
4635                         wpa_s->p2p_auto_pd = 0;
4636                         wpa_msg_global(wpa_s, MSG_INFO,
4637                                        P2P_EVENT_PROV_DISC_FAILURE
4638                                        " p2p_dev_addr=" MACSTR " status=N/A",
4639                                        MAC2STR(wpa_s->pending_join_dev_addr));
4640                         return;
4641                 }
4642                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4643                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4644                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4645         }
4646 }
4647
4648
4649 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4650 {
4651         int res;
4652         unsigned int num, i;
4653         struct wpa_used_freq_data *freqs;
4654
4655         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4656                 /* Multiple channels are supported and not all are in use */
4657                 return 0;
4658         }
4659
4660         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4661                           sizeof(struct wpa_used_freq_data));
4662         if (!freqs)
4663                 return 1;
4664
4665         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4666                                         wpa_s->num_multichan_concurrent);
4667
4668         for (i = 0; i < num; i++) {
4669                 if (freqs[i].freq == freq) {
4670                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4671                                    freq);
4672                         res = 0;
4673                         goto exit_free;
4674                 }
4675         }
4676
4677         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4678         res = 1;
4679
4680 exit_free:
4681         os_free(freqs);
4682         return res;
4683 }
4684
4685
4686 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4687                             const u8 *peer_dev_addr)
4688 {
4689         struct wpa_bss *bss;
4690         int updated;
4691
4692         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4693         if (bss == NULL)
4694                 return -1;
4695         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4696                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4697                            "last scan");
4698                 return 0;
4699         }
4700
4701         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4702                                     &bss->last_update);
4703         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4704                    "%ld.%06ld (%supdated in last scan)",
4705                    bss->last_update.sec, bss->last_update.usec,
4706                    updated ? "": "not ");
4707
4708         return updated;
4709 }
4710
4711
4712 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4713                                    struct wpa_scan_results *scan_res)
4714 {
4715         struct wpa_bss *bss = NULL;
4716         int freq;
4717         u8 iface_addr[ETH_ALEN];
4718
4719         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4720
4721         if (wpa_s->global->p2p_disabled)
4722                 return;
4723
4724         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4725                    scan_res ? (int) scan_res->num : -1,
4726                    wpa_s->p2p_auto_join ? "auto_" : "");
4727
4728         if (scan_res)
4729                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4730
4731         if (wpa_s->p2p_auto_pd) {
4732                 int join = wpas_p2p_peer_go(wpa_s,
4733                                             wpa_s->pending_join_dev_addr);
4734                 if (join == 0 &&
4735                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4736                         wpa_s->auto_pd_scan_retry++;
4737                         bss = wpa_bss_get_bssid_latest(
4738                                 wpa_s, wpa_s->pending_join_dev_addr);
4739                         if (bss) {
4740                                 freq = bss->freq;
4741                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4742                                            "the peer " MACSTR " at %d MHz",
4743                                            wpa_s->auto_pd_scan_retry,
4744                                            MAC2STR(wpa_s->
4745                                                    pending_join_dev_addr),
4746                                            freq);
4747                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4748                                 return;
4749                         }
4750                 }
4751
4752                 if (join < 0)
4753                         join = 0;
4754
4755                 wpa_s->p2p_auto_pd = 0;
4756                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4757                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4758                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4759                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4760                                       wpa_s->pending_join_dev_addr, NULL,
4761                                       wpa_s->pending_pd_config_methods, join,
4762                                       0, wpa_s->user_initiated_pd) < 0) {
4763                         wpa_s->p2p_auto_pd = 0;
4764                         wpa_msg_global(wpa_s, MSG_INFO,
4765                                        P2P_EVENT_PROV_DISC_FAILURE
4766                                        " p2p_dev_addr=" MACSTR " status=N/A",
4767                                        MAC2STR(wpa_s->pending_join_dev_addr));
4768                 }
4769                 return;
4770         }
4771
4772         if (wpa_s->p2p_auto_join) {
4773                 int join = wpas_p2p_peer_go(wpa_s,
4774                                             wpa_s->pending_join_dev_addr);
4775                 if (join < 0) {
4776                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4777                                    "running a GO -> use GO Negotiation");
4778                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4779                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4780                                        "reason=peer-not-running-GO");
4781                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4782                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4783                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4784                                          wpa_s->p2p_go_intent,
4785                                          wpa_s->p2p_connect_freq,
4786                                          wpa_s->p2p_go_vht_center_freq2,
4787                                          wpa_s->p2p_persistent_id,
4788                                          wpa_s->p2p_pd_before_go_neg,
4789                                          wpa_s->p2p_go_ht40,
4790                                          wpa_s->p2p_go_vht,
4791                                          wpa_s->p2p_go_max_oper_chwidth,
4792                                          NULL, 0);
4793                         return;
4794                 }
4795
4796                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4797                            "try to join the group", join ? "" :
4798                            " in older scan");
4799                 if (!join) {
4800                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4801                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4802                         wpa_s->p2p_fallback_to_go_neg = 1;
4803                 }
4804         }
4805
4806         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4807                                  wpa_s->pending_join_iface_addr);
4808         if (freq < 0 &&
4809             p2p_get_interface_addr(wpa_s->global->p2p,
4810                                    wpa_s->pending_join_dev_addr,
4811                                    iface_addr) == 0 &&
4812             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4813             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4814                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4815                            "address for join from " MACSTR " to " MACSTR
4816                            " based on newly discovered P2P peer entry",
4817                            MAC2STR(wpa_s->pending_join_iface_addr),
4818                            MAC2STR(iface_addr));
4819                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4820                           ETH_ALEN);
4821
4822                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4823                                          wpa_s->pending_join_iface_addr);
4824         }
4825         if (freq >= 0) {
4826                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4827                            "from P2P peer table: %d MHz", freq);
4828         }
4829         if (wpa_s->p2p_join_ssid_len) {
4830                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4831                            MACSTR " and SSID %s",
4832                            MAC2STR(wpa_s->pending_join_iface_addr),
4833                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4834                                         wpa_s->p2p_join_ssid_len));
4835                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4836                                   wpa_s->p2p_join_ssid,
4837                                   wpa_s->p2p_join_ssid_len);
4838         } else if (!bss) {
4839                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4840                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4841                 bss = wpa_bss_get_bssid_latest(wpa_s,
4842                                                wpa_s->pending_join_iface_addr);
4843         }
4844         if (bss) {
4845                 u8 dev_addr[ETH_ALEN];
4846
4847                 freq = bss->freq;
4848                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4849                            "from BSS table: %d MHz (SSID %s)", freq,
4850                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4851                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4852                                        dev_addr) == 0 &&
4853                     os_memcmp(wpa_s->pending_join_dev_addr,
4854                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4855                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4856                               ETH_ALEN) != 0) {
4857                         wpa_printf(MSG_DEBUG,
4858                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4859                                    MAC2STR(dev_addr),
4860                                    MAC2STR(wpa_s->pending_join_dev_addr));
4861                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4862                                   ETH_ALEN);
4863                 }
4864         }
4865         if (freq > 0) {
4866                 u16 method;
4867
4868                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4869                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4870                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4871                                        "reason=FREQ_CONFLICT");
4872                         wpas_notify_p2p_group_formation_failure(
4873                                 wpa_s, "FREQ_CONFLICT");
4874                         return;
4875                 }
4876
4877                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4878                            "prior to joining an existing group (GO " MACSTR
4879                            " freq=%u MHz)",
4880                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4881                 wpa_s->pending_pd_before_join = 1;
4882
4883                 switch (wpa_s->pending_join_wps_method) {
4884                 case WPS_PIN_DISPLAY:
4885                         method = WPS_CONFIG_KEYPAD;
4886                         break;
4887                 case WPS_PIN_KEYPAD:
4888                         method = WPS_CONFIG_DISPLAY;
4889                         break;
4890                 case WPS_PBC:
4891                         method = WPS_CONFIG_PUSHBUTTON;
4892                         break;
4893                 case WPS_P2PS:
4894                         method = WPS_CONFIG_P2PS;
4895                         break;
4896                 default:
4897                         method = 0;
4898                         break;
4899                 }
4900
4901                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4902                                                wpa_s->pending_join_dev_addr) ==
4903                      method)) {
4904                         /*
4905                          * We have already performed provision discovery for
4906                          * joining the group. Proceed directly to join
4907                          * operation without duplicated provision discovery. */
4908                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4909                                    "with " MACSTR " already done - proceed to "
4910                                    "join",
4911                                    MAC2STR(wpa_s->pending_join_dev_addr));
4912                         wpa_s->pending_pd_before_join = 0;
4913                         goto start;
4914                 }
4915
4916                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4917                                       wpa_s->pending_join_dev_addr,
4918                                       NULL, method, 1,
4919                                       freq, wpa_s->user_initiated_pd) < 0) {
4920                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4921                                    "Discovery Request before joining an "
4922                                    "existing group");
4923                         wpa_s->pending_pd_before_join = 0;
4924                         goto start;
4925                 }
4926                 return;
4927         }
4928
4929         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4930         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4931         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4932         wpas_p2p_check_join_scan_limit(wpa_s);
4933         return;
4934
4935 start:
4936         /* Start join operation immediately */
4937         wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid,
4938                             wpa_s->p2p_join_ssid_len);
4939 }
4940
4941
4942 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4943                                    const u8 *ssid, size_t ssid_len)
4944 {
4945         int ret;
4946         struct wpa_driver_scan_params params;
4947         struct wpabuf *wps_ie, *ies;
4948         size_t ielen;
4949         int freqs[2] = { 0, 0 };
4950         unsigned int bands;
4951
4952         os_memset(&params, 0, sizeof(params));
4953
4954         /* P2P Wildcard SSID */
4955         params.num_ssids = 1;
4956         if (ssid && ssid_len) {
4957                 params.ssids[0].ssid = ssid;
4958                 params.ssids[0].ssid_len = ssid_len;
4959                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4960                 wpa_s->p2p_join_ssid_len = ssid_len;
4961         } else {
4962                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4963                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4964                 wpa_s->p2p_join_ssid_len = 0;
4965         }
4966
4967         wpa_s->wps->dev.p2p = 1;
4968         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4969                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4970                                         NULL);
4971         if (wps_ie == NULL) {
4972                 wpas_p2p_scan_res_join(wpa_s, NULL);
4973                 return;
4974         }
4975
4976         if (!freq) {
4977                 int oper_freq;
4978                 /*
4979                  * If freq is not provided, check the operating freq of the GO
4980                  * and use a single channel scan on if possible.
4981                  */
4982                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4983                                               wpa_s->pending_join_iface_addr);
4984                 if (oper_freq > 0)
4985                         freq = oper_freq;
4986         }
4987         if (freq > 0) {
4988                 freqs[0] = freq;
4989                 params.freqs = freqs;
4990         }
4991
4992         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4993         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4994         if (ies == NULL) {
4995                 wpabuf_free(wps_ie);
4996                 wpas_p2p_scan_res_join(wpa_s, NULL);
4997                 return;
4998         }
4999         wpabuf_put_buf(ies, wps_ie);
5000         wpabuf_free(wps_ie);
5001
5002         bands = wpas_get_bands(wpa_s, freqs);
5003         p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
5004
5005         params.p2p_probe = 1;
5006         params.extra_ies = wpabuf_head(ies);
5007         params.extra_ies_len = wpabuf_len(ies);
5008
5009         /*
5010          * Run a scan to update BSS table and start Provision Discovery once
5011          * the new scan results become available.
5012          */
5013         ret = wpa_drv_scan(wpa_s, &params);
5014         if (!ret) {
5015                 os_get_reltime(&wpa_s->scan_trigger_time);
5016                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
5017                 wpa_s->own_scan_requested = 1;
5018         }
5019
5020         wpabuf_free(ies);
5021
5022         if (ret) {
5023                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5024                            "try again later");
5025                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5026                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5027                 wpas_p2p_check_join_scan_limit(wpa_s);
5028         }
5029 }
5030
5031
5032 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5033 {
5034         struct wpa_supplicant *wpa_s = eloop_ctx;
5035         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5036 }
5037
5038
5039 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5040                          const u8 *dev_addr, enum p2p_wps_method wps_method,
5041                          int auto_join, int op_freq,
5042                          const u8 *ssid, size_t ssid_len)
5043 {
5044         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5045                    MACSTR " dev " MACSTR " op_freq=%d)%s",
5046                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5047                    auto_join ? " (auto_join)" : "");
5048         if (ssid && ssid_len) {
5049                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5050                            wpa_ssid_txt(ssid, ssid_len));
5051         }
5052
5053         wpa_s->p2p_auto_pd = 0;
5054         wpa_s->p2p_auto_join = !!auto_join;
5055         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5056         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5057         wpa_s->pending_join_wps_method = wps_method;
5058
5059         /* Make sure we are not running find during connection establishment */
5060         wpas_p2p_stop_find(wpa_s);
5061
5062         wpa_s->p2p_join_scan_count = 0;
5063         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5064         return 0;
5065 }
5066
5067
5068 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5069                                const u8 *ssid, size_t ssid_len)
5070 {
5071         struct wpa_supplicant *group;
5072         struct p2p_go_neg_results res;
5073         struct wpa_bss *bss;
5074
5075         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5076         if (group == NULL)
5077                 return -1;
5078         if (group != wpa_s) {
5079                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5080                           sizeof(group->p2p_pin));
5081                 group->p2p_wps_method = wpa_s->p2p_wps_method;
5082         } else {
5083                 /*
5084                  * Need to mark the current interface for p2p_group_formation
5085                  * when a separate group interface is not used. This is needed
5086                  * to allow p2p_cancel stop a pending p2p_connect-join.
5087                  * wpas_p2p_init_group_interface() addresses this for the case
5088                  * where a separate group interface is used.
5089                  */
5090                 wpa_s->global->p2p_group_formation = wpa_s;
5091         }
5092
5093         group->p2p_in_provisioning = 1;
5094         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5095
5096         os_memset(&res, 0, sizeof(res));
5097         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5098         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5099                   ETH_ALEN);
5100         res.wps_method = wpa_s->pending_join_wps_method;
5101         if (freq && ssid && ssid_len) {
5102                 res.freq = freq;
5103                 res.ssid_len = ssid_len;
5104                 os_memcpy(res.ssid, ssid, ssid_len);
5105         } else {
5106                 if (ssid && ssid_len) {
5107                         bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
5108                                           ssid, ssid_len);
5109                 } else {
5110                         bss = wpa_bss_get_bssid_latest(
5111                                 wpa_s, wpa_s->pending_join_iface_addr);
5112                 }
5113                 if (bss) {
5114                         res.freq = bss->freq;
5115                         res.ssid_len = bss->ssid_len;
5116                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5117                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5118                                    bss->freq,
5119                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
5120                 } else if (ssid && ssid_len) {
5121                         res.ssid_len = ssid_len;
5122                         os_memcpy(res.ssid, ssid, ssid_len);
5123                         wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)",
5124                                    wpa_ssid_txt(ssid, ssid_len));
5125                 }
5126         }
5127
5128         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5129                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5130                            "starting client");
5131                 wpa_drv_cancel_remain_on_channel(wpa_s);
5132                 wpa_s->off_channel_freq = 0;
5133                 wpa_s->roc_waiting_drv_freq = 0;
5134         }
5135         wpas_start_wps_enrollee(group, &res);
5136
5137         /*
5138          * Allow a longer timeout for join-a-running-group than normal 15
5139          * second group formation timeout since the GO may not have authorized
5140          * our connection yet.
5141          */
5142         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5143         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5144                                wpa_s, NULL);
5145
5146         return 0;
5147 }
5148
5149
5150 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5151                                 int *force_freq, int *pref_freq, int go,
5152                                 unsigned int *pref_freq_list,
5153                                 unsigned int *num_pref_freq)
5154 {
5155         struct wpa_used_freq_data *freqs;
5156         int res, best_freq, num_unused;
5157         unsigned int freq_in_use = 0, num, i, max_pref_freq;
5158
5159         max_pref_freq = *num_pref_freq;
5160         *num_pref_freq = 0;
5161
5162         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5163                           sizeof(struct wpa_used_freq_data));
5164         if (!freqs)
5165                 return -1;
5166
5167         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5168                                         wpa_s->num_multichan_concurrent);
5169
5170         /*
5171          * It is possible that the total number of used frequencies is bigger
5172          * than the number of frequencies used for P2P, so get the system wide
5173          * number of unused frequencies.
5174          */
5175         num_unused = wpas_p2p_num_unused_channels(wpa_s);
5176
5177         wpa_printf(MSG_DEBUG,
5178                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5179                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
5180
5181         if (freq > 0) {
5182                 int ret;
5183                 if (go)
5184                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5185                 else
5186                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5187                 if (!ret) {
5188                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5189                             ieee80211_is_dfs(freq)) {
5190                                 /*
5191                                  * If freq is a DFS channel and DFS is offloaded
5192                                  * to the driver, allow P2P GO to use it.
5193                                  */
5194                                 wpa_printf(MSG_DEBUG,
5195                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5196                                            freq);
5197                         } else {
5198                                 wpa_printf(MSG_DEBUG,
5199                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5200                                            freq);
5201                                 res = -3;
5202                                 goto exit_free;
5203                         }
5204                 }
5205
5206                 for (i = 0; i < num; i++) {
5207                         if (freqs[i].freq == freq)
5208                                 freq_in_use = 1;
5209                 }
5210
5211                 if (num_unused <= 0 && !freq_in_use) {
5212                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5213                                    freq);
5214                         res = -2;
5215                         goto exit_free;
5216                 }
5217                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5218                            "requested channel (%u MHz)", freq);
5219                 *force_freq = freq;
5220                 goto exit_ok;
5221         }
5222
5223         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5224
5225         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5226                 enum wpa_driver_if_type iface_type;
5227
5228                 if (go)
5229                         iface_type = WPA_IF_P2P_GO;
5230                 else
5231                         iface_type = WPA_IF_P2P_CLIENT;
5232
5233                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5234                            best_freq, go);
5235
5236                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5237                                                  &max_pref_freq,
5238                                                  pref_freq_list);
5239                 if (!res && max_pref_freq > 0) {
5240                         *num_pref_freq = max_pref_freq;
5241                         i = 0;
5242                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5243                                                         pref_freq_list[i]) &&
5244                                i < *num_pref_freq) {
5245                                 wpa_printf(MSG_DEBUG,
5246                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5247                                            i, pref_freq_list[i]);
5248                                 i++;
5249                         }
5250                         if (i != *num_pref_freq) {
5251                                 best_freq = pref_freq_list[i];
5252                                 wpa_printf(MSG_DEBUG,
5253                                            "P2P: Using preferred_freq_list[%d]=%d",
5254                                            i, best_freq);
5255                         } else {
5256                                 wpa_printf(MSG_DEBUG,
5257                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5258                                 *num_pref_freq = 0;
5259                         }
5260                 } else {
5261                         wpa_printf(MSG_DEBUG,
5262                                    "P2P: No preferred frequency list available");
5263                 }
5264         }
5265
5266         /* We have a candidate frequency to use */
5267         if (best_freq > 0) {
5268                 if (*pref_freq == 0 && num_unused > 0) {
5269                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5270                                    best_freq);
5271                         *pref_freq = best_freq;
5272                 } else {
5273                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5274                                    best_freq);
5275                         *force_freq = best_freq;
5276                 }
5277         } else if (num_unused > 0) {
5278                 wpa_printf(MSG_DEBUG,
5279                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5280                 *force_freq = 0;
5281         } else {
5282                 wpa_printf(MSG_DEBUG,
5283                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5284                 res = -2;
5285                 goto exit_free;
5286         }
5287
5288 exit_ok:
5289         res = 0;
5290 exit_free:
5291         os_free(freqs);
5292         return res;
5293 }
5294
5295
5296 /**
5297  * wpas_p2p_connect - Request P2P Group Formation to be started
5298  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5299  * @peer_addr: Address of the peer P2P Device
5300  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5301  * @persistent_group: Whether to create a persistent group
5302  * @auto_join: Whether to select join vs. GO Negotiation automatically
5303  * @join: Whether to join an existing group (as a client) instead of starting
5304  *      Group Owner negotiation; @peer_addr is BSSID in that case
5305  * @auth: Whether to only authorize the connection instead of doing that and
5306  *      initiating Group Owner negotiation
5307  * @go_intent: GO Intent or -1 to use default
5308  * @freq: Frequency for the group or 0 for auto-selection
5309  * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5310  * @persistent_id: Persistent group credentials to use for forcing GO
5311  *      parameters or -1 to generate new values (SSID/passphrase)
5312  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5313  *      interoperability workaround when initiating group formation
5314  * @ht40: Start GO with 40 MHz channel width
5315  * @vht:  Start GO with VHT support
5316  * @vht_chwidth: Channel width supported by GO operating with VHT support
5317  *      (VHT_CHANWIDTH_*).
5318  * @group_ssid: Specific Group SSID for join or %NULL if not set
5319  * @group_ssid_len: Length of @group_ssid in octets
5320  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5321  *      failure, -2 on failure due to channel not currently available,
5322  *      -3 if forced channel is not supported
5323  */
5324 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5325                      const char *pin, enum p2p_wps_method wps_method,
5326                      int persistent_group, int auto_join, int join, int auth,
5327                      int go_intent, int freq, unsigned int vht_center_freq2,
5328                      int persistent_id, int pd, int ht40, int vht,
5329                      unsigned int vht_chwidth, const u8 *group_ssid,
5330                      size_t group_ssid_len)
5331 {
5332         int force_freq = 0, pref_freq = 0;
5333         int ret = 0, res;
5334         enum wpa_driver_if_type iftype;
5335         const u8 *if_addr;
5336         struct wpa_ssid *ssid = NULL;
5337         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5338
5339         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5340                 return -1;
5341
5342         if (persistent_id >= 0) {
5343                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5344                 if (ssid == NULL || ssid->disabled != 2 ||
5345                     ssid->mode != WPAS_MODE_P2P_GO)
5346                         return -1;
5347         }
5348
5349         os_free(wpa_s->global->add_psk);
5350         wpa_s->global->add_psk = NULL;
5351
5352         wpa_s->global->p2p_fail_on_wps_complete = 0;
5353         wpa_s->global->pending_p2ps_group = 0;
5354         wpa_s->global->pending_p2ps_group_freq = 0;
5355         wpa_s->p2ps_method_config_any = 0;
5356
5357         if (go_intent < 0)
5358                 go_intent = wpa_s->conf->p2p_go_intent;
5359
5360         if (!auth)
5361                 wpa_s->p2p_long_listen = 0;
5362
5363         wpa_s->p2p_wps_method = wps_method;
5364         wpa_s->p2p_persistent_group = !!persistent_group;
5365         wpa_s->p2p_persistent_id = persistent_id;
5366         wpa_s->p2p_go_intent = go_intent;
5367         wpa_s->p2p_connect_freq = freq;
5368         wpa_s->p2p_fallback_to_go_neg = 0;
5369         wpa_s->p2p_pd_before_go_neg = !!pd;
5370         wpa_s->p2p_go_ht40 = !!ht40;
5371         wpa_s->p2p_go_vht = !!vht;
5372         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5373         wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5374
5375         if (pin)
5376                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5377         else if (wps_method == WPS_PIN_DISPLAY) {
5378                 if (wps_generate_pin((unsigned int *) &ret) < 0)
5379                         return -1;
5380                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5381                                   "%08d", ret);
5382                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5383                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5384                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5385                            wpa_s->p2p_pin);
5386         } else
5387                 wpa_s->p2p_pin[0] = '\0';
5388
5389         if (join || auto_join) {
5390                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5391                 if (auth) {
5392                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5393                                    "connect a running group from " MACSTR,
5394                                    MAC2STR(peer_addr));
5395                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5396                         return ret;
5397                 }
5398                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5399                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5400                                            iface_addr) < 0) {
5401                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5402                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5403                                          dev_addr);
5404                 }
5405                 if (auto_join) {
5406                         os_get_reltime(&wpa_s->p2p_auto_started);
5407                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5408                                    "%ld.%06ld",
5409                                    wpa_s->p2p_auto_started.sec,
5410                                    wpa_s->p2p_auto_started.usec);
5411                 }
5412                 wpa_s->user_initiated_pd = 1;
5413                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5414                                   auto_join, freq,
5415                                   group_ssid, group_ssid_len) < 0)
5416                         return -1;
5417                 return ret;
5418         }
5419
5420         size = P2P_MAX_PREF_CHANNELS;
5421         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5422                                    go_intent == 15, pref_freq_list, &size);
5423         if (res)
5424                 return res;
5425         wpas_p2p_set_own_freq_preference(wpa_s,
5426                                          force_freq ? force_freq : pref_freq);
5427
5428         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5429
5430         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5431
5432         if (wpa_s->create_p2p_iface) {
5433                 /* Prepare to add a new interface for the group */
5434                 iftype = WPA_IF_P2P_GROUP;
5435                 if (go_intent == 15)
5436                         iftype = WPA_IF_P2P_GO;
5437                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5438                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5439                                    "interface for the group");
5440                         return -1;
5441                 }
5442
5443                 if_addr = wpa_s->pending_interface_addr;
5444         } else {
5445                 if (wpa_s->p2p_mgmt)
5446                         if_addr = wpa_s->parent->own_addr;
5447                 else
5448                         if_addr = wpa_s->own_addr;
5449                 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5450         }
5451
5452         if (auth) {
5453                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5454                                          go_intent, if_addr,
5455                                          force_freq, persistent_group, ssid,
5456                                          pref_freq) < 0)
5457                         return -1;
5458                 return ret;
5459         }
5460
5461         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5462                                   go_intent, if_addr, force_freq,
5463                                   persistent_group, ssid, pref_freq) < 0) {
5464                 if (wpa_s->create_p2p_iface)
5465                         wpas_p2p_remove_pending_group_interface(wpa_s);
5466                 return -1;
5467         }
5468         return ret;
5469 }
5470
5471
5472 /**
5473  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5474  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5475  * @freq: Frequency of the channel in MHz
5476  * @duration: Duration of the stay on the channel in milliseconds
5477  *
5478  * This callback is called when the driver indicates that it has started the
5479  * requested remain-on-channel duration.
5480  */
5481 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5482                                    unsigned int freq, unsigned int duration)
5483 {
5484         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5485                 return;
5486         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)",
5487                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5488                    wpa_s->roc_waiting_drv_freq, freq, duration);
5489         if (wpa_s->off_channel_freq &&
5490             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5491                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5492                               wpa_s->pending_listen_duration);
5493                 wpa_s->pending_listen_freq = 0;
5494         } else {
5495                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5496                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5497                            freq, duration);
5498         }
5499 }
5500
5501
5502 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5503 {
5504         /* Limit maximum Listen state time based on driver limitation. */
5505         if (timeout > wpa_s->max_remain_on_chan)
5506                 timeout = wpa_s->max_remain_on_chan;
5507
5508         return p2p_listen(wpa_s->global->p2p, timeout);
5509 }
5510
5511
5512 /**
5513  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5514  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5515  * @freq: Frequency of the channel in MHz
5516  *
5517  * This callback is called when the driver indicates that a remain-on-channel
5518  * operation has been completed, i.e., the duration on the requested channel
5519  * has timed out.
5520  */
5521 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5522                                           unsigned int freq)
5523 {
5524         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5525                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5526                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5527         wpas_p2p_listen_work_done(wpa_s);
5528         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5529                 return;
5530         if (wpa_s->p2p_long_listen > 0)
5531                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5532         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5533                 return; /* P2P module started a new operation */
5534         if (offchannel_pending_action_tx(wpa_s))
5535                 return;
5536         if (wpa_s->p2p_long_listen > 0) {
5537                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5538                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5539         } else {
5540                 /*
5541                  * When listen duration is over, stop listen & update p2p_state
5542                  * to IDLE.
5543                  */
5544                 p2p_stop_listen(wpa_s->global->p2p);
5545         }
5546 }
5547
5548
5549 /**
5550  * wpas_p2p_group_remove - Remove a P2P group
5551  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5552  * @ifname: Network interface name of the group interface or "*" to remove all
5553  *      groups
5554  * Returns: 0 on success, -1 on failure
5555  *
5556  * This function is used to remove a P2P group. This can be used to disconnect
5557  * from a group in which the local end is a P2P Client or to end a P2P Group in
5558  * case the local end is the Group Owner. If a virtual network interface was
5559  * created for this group, that interface will be removed. Otherwise, only the
5560  * configured P2P group network will be removed from the interface.
5561  */
5562 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5563 {
5564         struct wpa_global *global = wpa_s->global;
5565         struct wpa_supplicant *calling_wpa_s = wpa_s;
5566
5567         if (os_strcmp(ifname, "*") == 0) {
5568                 struct wpa_supplicant *prev;
5569                 wpa_s = global->ifaces;
5570                 while (wpa_s) {
5571                         prev = wpa_s;
5572                         wpa_s = wpa_s->next;
5573                         if (prev->p2p_group_interface !=
5574                             NOT_P2P_GROUP_INTERFACE ||
5575                             (prev->current_ssid &&
5576                              prev->current_ssid->p2p_group))
5577                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5578                 }
5579                 return 0;
5580         }
5581
5582         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5583                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5584                         break;
5585         }
5586
5587         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5588 }
5589
5590
5591 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5592 {
5593         unsigned int r;
5594
5595         if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5596                 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5597                 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5598                 int res;
5599
5600                 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5601                                                  &size, pref_freq_list);
5602                 if (!res && size > 0) {
5603                         i = 0;
5604                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5605                                                         pref_freq_list[i]) &&
5606                                i < size) {
5607                                 wpa_printf(MSG_DEBUG,
5608                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5609                                            i, pref_freq_list[i]);
5610                                 i++;
5611                         }
5612                         if (i != size) {
5613                                 freq = pref_freq_list[i];
5614                                 wpa_printf(MSG_DEBUG,
5615                                            "P2P: Using preferred_freq_list[%d]=%d",
5616                                            i, freq);
5617                         } else {
5618                                 wpa_printf(MSG_DEBUG,
5619                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5620                         }
5621                 } else {
5622                         wpa_printf(MSG_DEBUG,
5623                                    "P2P: No preferred frequency list available");
5624                 }
5625         }
5626
5627         if (freq == 2) {
5628                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5629                            "band");
5630                 if (wpa_s->best_24_freq > 0 &&
5631                     p2p_supported_freq_go(wpa_s->global->p2p,
5632                                           wpa_s->best_24_freq)) {
5633                         freq = wpa_s->best_24_freq;
5634                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5635                                    "channel: %d MHz", freq);
5636                 } else {
5637                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5638                                 return -1;
5639                         freq = 2412 + (r % 3) * 25;
5640                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5641                                    "channel: %d MHz", freq);
5642                 }
5643         }
5644
5645         if (freq == 5) {
5646                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5647                            "band");
5648                 if (wpa_s->best_5_freq > 0 &&
5649                     p2p_supported_freq_go(wpa_s->global->p2p,
5650                                        wpa_s->best_5_freq)) {
5651                         freq = wpa_s->best_5_freq;
5652                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5653                                    "channel: %d MHz", freq);
5654                 } else {
5655                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5656                                 return -1;
5657                         freq = 5180 + (r % 4) * 20;
5658                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5659                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5660                                            "5 GHz channel for P2P group");
5661                                 return -1;
5662                         }
5663                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5664                                    "channel: %d MHz", freq);
5665                 }
5666         }
5667
5668         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5669                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5670                     ieee80211_is_dfs(freq)) {
5671                         /*
5672                          * If freq is a DFS channel and DFS is offloaded to the
5673                          * driver, allow P2P GO to use it.
5674                          */
5675                         wpa_printf(MSG_DEBUG, "P2P: "
5676                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5677                                    __func__, freq);
5678                         return freq;
5679                 }
5680                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5681                            "(%u MHz) is not supported for P2P uses",
5682                            freq);
5683                 return -1;
5684         }
5685
5686         return freq;
5687 }
5688
5689
5690 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5691                                       const struct p2p_channels *channels,
5692                                       int freq)
5693 {
5694         if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5695             p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5696             freq_included(wpa_s, channels, freq))
5697                 return 1;
5698         return 0;
5699 }
5700
5701
5702 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5703                                             struct p2p_go_neg_results *params,
5704                                             const struct p2p_channels *channels)
5705 {
5706         unsigned int i, r;
5707
5708         /* first try some random selection of the social channels */
5709         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5710                 return;
5711
5712         for (i = 0; i < 3; i++) {
5713                 params->freq = 2412 + ((r + i) % 3) * 25;
5714                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5715                         goto out;
5716         }
5717
5718         /* try all other channels in operating class 81 */
5719         for (i = 0; i < 11; i++) {
5720                 params->freq = 2412 + i * 5;
5721
5722                 /* skip social channels; covered in the previous loop */
5723                 if (params->freq == 2412 ||
5724                     params->freq == 2437 ||
5725                     params->freq == 2462)
5726                         continue;
5727
5728                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5729                         goto out;
5730         }
5731
5732         /* try all channels in operating class 115 */
5733         for (i = 0; i < 4; i++) {
5734                 params->freq = 5180 + i * 20;
5735                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5736                     freq_included(wpa_s, channels, params->freq) &&
5737                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5738                         goto out;
5739         }
5740
5741         /* try all channels in operating class 124 */
5742         for (i = 0; i < 4; i++) {
5743                 params->freq = 5745 + i * 20;
5744                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5745                     freq_included(wpa_s, channels, params->freq) &&
5746                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5747                         goto out;
5748         }
5749
5750         /* try social channel class 180 channel 2 */
5751         params->freq = 58320 + 1 * 2160;
5752         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5753             freq_included(wpa_s, channels, params->freq) &&
5754             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5755                 goto out;
5756
5757         /* try all channels in reg. class 180 */
5758         for (i = 0; i < 4; i++) {
5759                 params->freq = 58320 + i * 2160;
5760                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5761                     freq_included(wpa_s, channels, params->freq) &&
5762                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5763                         goto out;
5764         }
5765
5766         params->freq = 0;
5767         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5768         return;
5769 out:
5770         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5771                    params->freq);
5772 }
5773
5774
5775 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5776                                    struct p2p_go_neg_results *params,
5777                                    int freq, int vht_center_freq2, int ht40,
5778                                    int vht, int max_oper_chwidth,
5779                                    const struct p2p_channels *channels)
5780 {
5781         struct wpa_used_freq_data *freqs;
5782         unsigned int cand;
5783         unsigned int num, i;
5784         int ignore_no_freqs = 0;
5785         int unused_channels = wpas_p2p_num_unused_channels(wpa_s) > 0;
5786
5787         os_memset(params, 0, sizeof(*params));
5788         params->role_go = 1;
5789         params->ht40 = ht40;
5790         params->vht = vht;
5791         params->max_oper_chwidth = max_oper_chwidth;
5792         params->vht_center_freq2 = vht_center_freq2;
5793
5794         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5795                           sizeof(struct wpa_used_freq_data));
5796         if (!freqs)
5797                 return -1;
5798
5799         num = get_shared_radio_freqs_data(wpa_s, freqs,
5800                                           wpa_s->num_multichan_concurrent);
5801
5802         if (wpa_s->current_ssid &&
5803             wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5804             wpa_s->wpa_state == WPA_COMPLETED) {
5805                 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5806                            __func__);
5807
5808                 /*
5809                  * If the frequency selection is done for an active P2P GO that
5810                  * is not sharing a frequency, allow to select a new frequency
5811                  * even if there are no unused frequencies as we are about to
5812                  * move the P2P GO so its frequency can be re-used.
5813                  */
5814                 for (i = 0; i < num; i++) {
5815                         if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5816                             freqs[i].flags == 0) {
5817                                 ignore_no_freqs = 1;
5818                                 break;
5819                         }
5820                 }
5821         }
5822
5823         /* try using the forced freq */
5824         if (freq) {
5825                 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) {
5826                         wpa_printf(MSG_DEBUG,
5827                                    "P2P: Forced GO freq %d MHz not accepted",
5828                                    freq);
5829                         goto fail;
5830                 }
5831
5832                 for (i = 0; i < num; i++) {
5833                         if (freqs[i].freq == freq) {
5834                                 wpa_printf(MSG_DEBUG,
5835                                            "P2P: forced freq (%d MHz) is also shared",
5836                                            freq);
5837                                 params->freq = freq;
5838                                 goto success;
5839                         }
5840                 }
5841
5842                 if (!ignore_no_freqs && !unused_channels) {
5843                         wpa_printf(MSG_DEBUG,
5844                                    "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5845                                    freq);
5846                         goto fail;
5847                 }
5848
5849                 wpa_printf(MSG_DEBUG,
5850                            "P2P: force GO freq (%d MHz) on a free channel",
5851                            freq);
5852                 params->freq = freq;
5853                 goto success;
5854         }
5855
5856         /* consider using one of the shared frequencies */
5857         if (num &&
5858             (!wpa_s->conf->p2p_ignore_shared_freq || !unused_channels)) {
5859                 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5860                 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5861                         wpa_printf(MSG_DEBUG,
5862                                    "P2P: Use shared freq (%d MHz) for GO",
5863                                    cand);
5864                         params->freq = cand;
5865                         goto success;
5866                 }
5867
5868                 /* try using one of the shared freqs */
5869                 for (i = 0; i < num; i++) {
5870                         if (wpas_p2p_supported_freq_go(wpa_s, channels,
5871                                                        freqs[i].freq)) {
5872                                 wpa_printf(MSG_DEBUG,
5873                                            "P2P: Use shared freq (%d MHz) for GO",
5874                                            freqs[i].freq);
5875                                 params->freq = freqs[i].freq;
5876                                 goto success;
5877                         }
5878                 }
5879         }
5880
5881         if (!ignore_no_freqs && !unused_channels) {
5882                 wpa_printf(MSG_DEBUG,
5883                            "P2P: Cannot force GO on any of the channels we are already using");
5884                 goto fail;
5885         }
5886
5887         /* try using the setting from the configuration file */
5888         if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5889             wpa_s->conf->p2p_oper_channel >= 1 &&
5890             wpa_s->conf->p2p_oper_channel <= 11 &&
5891             wpas_p2p_supported_freq_go(
5892                     wpa_s, channels,
5893                     2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5894                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5895                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5896                            "frequency %d MHz", params->freq);
5897                 goto success;
5898         }
5899
5900         if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5901              wpa_s->conf->p2p_oper_reg_class == 116 ||
5902              wpa_s->conf->p2p_oper_reg_class == 117 ||
5903              wpa_s->conf->p2p_oper_reg_class == 124 ||
5904              wpa_s->conf->p2p_oper_reg_class == 125 ||
5905              wpa_s->conf->p2p_oper_reg_class == 126 ||
5906              wpa_s->conf->p2p_oper_reg_class == 127) &&
5907             wpas_p2p_supported_freq_go(wpa_s, channels,
5908                                        5000 +
5909                                        5 * wpa_s->conf->p2p_oper_channel)) {
5910                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5911                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5912                            "frequency %d MHz", params->freq);
5913                 goto success;
5914         }
5915
5916         /* Try using best channels */
5917         if (wpa_s->conf->p2p_oper_channel == 0 &&
5918             wpa_s->best_overall_freq > 0 &&
5919             wpas_p2p_supported_freq_go(wpa_s, channels,
5920                                        wpa_s->best_overall_freq)) {
5921                 params->freq = wpa_s->best_overall_freq;
5922                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5923                            "channel %d MHz", params->freq);
5924                 goto success;
5925         }
5926
5927         if (wpa_s->conf->p2p_oper_channel == 0 &&
5928             wpa_s->best_24_freq > 0 &&
5929             wpas_p2p_supported_freq_go(wpa_s, channels,
5930                                        wpa_s->best_24_freq)) {
5931                 params->freq = wpa_s->best_24_freq;
5932                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5933                            "channel %d MHz", params->freq);
5934                 goto success;
5935         }
5936
5937         if (wpa_s->conf->p2p_oper_channel == 0 &&
5938             wpa_s->best_5_freq > 0 &&
5939             wpas_p2p_supported_freq_go(wpa_s, channels,
5940                                        wpa_s->best_5_freq)) {
5941                 params->freq = wpa_s->best_5_freq;
5942                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5943                            "channel %d MHz", params->freq);
5944                 goto success;
5945         }
5946
5947         /* try using preferred channels */
5948         cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
5949         if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5950                 params->freq = cand;
5951                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5952                            "channels", params->freq);
5953                 goto success;
5954         }
5955
5956         /* Try using one of the group common freqs */
5957         if (wpa_s->p2p_group_common_freqs) {
5958                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
5959                         cand = wpa_s->p2p_group_common_freqs[i];
5960                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5961                                 params->freq = cand;
5962                                 wpa_printf(MSG_DEBUG,
5963                                            "P2P: Use freq %d MHz common with the peer",
5964                                            params->freq);
5965                                 goto success;
5966                         }
5967                 }
5968         }
5969
5970         /* no preference, select some channel */
5971         wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
5972
5973         if (params->freq == 0) {
5974                 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
5975                 goto fail;
5976         }
5977
5978 success:
5979         os_free(freqs);
5980         return 0;
5981 fail:
5982         os_free(freqs);
5983         return -1;
5984 }
5985
5986
5987 static struct wpa_supplicant *
5988 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5989                          int go)
5990 {
5991         struct wpa_supplicant *group_wpa_s;
5992
5993         if (!wpas_p2p_create_iface(wpa_s)) {
5994                 if (wpa_s->p2p_mgmt) {
5995                         /*
5996                          * We may be called on the p2p_dev interface which
5997                          * cannot be used for group operations, so always use
5998                          * the primary interface.
5999                          */
6000                         wpa_s->parent->p2pdev = wpa_s;
6001                         wpa_s = wpa_s->parent;
6002                 }
6003                 wpa_dbg(wpa_s, MSG_DEBUG,
6004                         "P2P: Use primary interface for group operations");
6005                 wpa_s->p2p_first_connection_timeout = 0;
6006                 if (wpa_s != wpa_s->p2pdev)
6007                         wpas_p2p_clone_config(wpa_s, wpa_s->p2pdev);
6008                 return wpa_s;
6009         }
6010
6011         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
6012                                          WPA_IF_P2P_CLIENT) < 0) {
6013                 wpa_msg_global(wpa_s, MSG_ERROR,
6014                                "P2P: Failed to add group interface");
6015                 return NULL;
6016         }
6017         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
6018         if (group_wpa_s == NULL) {
6019                 wpa_msg_global(wpa_s, MSG_ERROR,
6020                                "P2P: Failed to initialize group interface");
6021                 wpas_p2p_remove_pending_group_interface(wpa_s);
6022                 return NULL;
6023         }
6024
6025         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
6026                 group_wpa_s->ifname);
6027         group_wpa_s->p2p_first_connection_timeout = 0;
6028         return group_wpa_s;
6029 }
6030
6031
6032 /**
6033  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
6034  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
6035  * @persistent_group: Whether to create a persistent group
6036  * @freq: Frequency for the group or 0 to indicate no hardcoding
6037  * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80
6038  * @ht40: Start GO with 40 MHz channel width
6039  * @vht:  Start GO with VHT support
6040  * @vht_chwidth: channel bandwidth for GO operating with VHT support
6041  * Returns: 0 on success, -1 on failure
6042  *
6043  * This function creates a new P2P group with the local end as the Group Owner,
6044  * i.e., without using Group Owner Negotiation.
6045  */
6046 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
6047                        int freq, int vht_center_freq2, int ht40, int vht,
6048                        int max_oper_chwidth)
6049 {
6050         struct p2p_go_neg_results params;
6051
6052         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6053                 return -1;
6054
6055         os_free(wpa_s->global->add_psk);
6056         wpa_s->global->add_psk = NULL;
6057
6058         /* Make sure we are not running find during connection establishment */
6059         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6060         wpas_p2p_stop_find_oper(wpa_s);
6061
6062         freq = wpas_p2p_select_go_freq(wpa_s, freq);
6063         if (freq < 0)
6064                 return -1;
6065
6066         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6067                                     ht40, vht, max_oper_chwidth, NULL))
6068                 return -1;
6069         if (params.freq &&
6070             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
6071                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
6072                     ieee80211_is_dfs(params.freq)) {
6073                         /*
6074                          * If freq is a DFS channel and DFS is offloaded to the
6075                          * driver, allow P2P GO to use it.
6076                          */
6077                         wpa_printf(MSG_DEBUG,
6078                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
6079                                 __func__, params.freq);
6080                 } else {
6081                         wpa_printf(MSG_DEBUG,
6082                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
6083                                    params.freq);
6084                         return -1;
6085                 }
6086         }
6087         p2p_go_params(wpa_s->global->p2p, &params);
6088         params.persistent_group = persistent_group;
6089
6090         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6091         if (wpa_s == NULL)
6092                 return -1;
6093         wpas_start_wps_go(wpa_s, &params, 0);
6094
6095         return 0;
6096 }
6097
6098
6099 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6100                                  struct wpa_ssid *params, int addr_allocated,
6101                                  int freq, int force_scan)
6102 {
6103         struct wpa_ssid *ssid;
6104
6105         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6106         if (wpa_s == NULL)
6107                 return -1;
6108         if (force_scan)
6109                 os_get_reltime(&wpa_s->scan_min_time);
6110         wpa_s->p2p_last_4way_hs_fail = NULL;
6111
6112         wpa_supplicant_ap_deinit(wpa_s);
6113
6114         ssid = wpa_config_add_network(wpa_s->conf);
6115         if (ssid == NULL)
6116                 return -1;
6117         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
6118         wpa_config_set_network_defaults(ssid);
6119         ssid->temporary = 1;
6120         ssid->proto = WPA_PROTO_RSN;
6121         ssid->pbss = params->pbss;
6122         ssid->pairwise_cipher = params->pbss ? WPA_CIPHER_GCMP :
6123                 WPA_CIPHER_CCMP;
6124         ssid->group_cipher = params->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP;
6125         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6126         ssid->ssid = os_malloc(params->ssid_len);
6127         if (ssid->ssid == NULL) {
6128                 wpa_config_remove_network(wpa_s->conf, ssid->id);
6129                 return -1;
6130         }
6131         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6132         ssid->ssid_len = params->ssid_len;
6133         ssid->p2p_group = 1;
6134         ssid->export_keys = 1;
6135         if (params->psk_set) {
6136                 os_memcpy(ssid->psk, params->psk, 32);
6137                 ssid->psk_set = 1;
6138         }
6139         if (params->passphrase)
6140                 ssid->passphrase = os_strdup(params->passphrase);
6141
6142         wpa_s->show_group_started = 1;
6143         wpa_s->p2p_in_invitation = 1;
6144         wpa_s->p2p_invite_go_freq = freq;
6145         wpa_s->p2p_go_group_formation_completed = 0;
6146         wpa_s->global->p2p_group_formation = wpa_s;
6147
6148         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6149                              NULL);
6150         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6151                                wpas_p2p_group_formation_timeout,
6152                                wpa_s->p2pdev, NULL);
6153         wpa_supplicant_select_network(wpa_s, ssid);
6154
6155         return 0;
6156 }
6157
6158
6159 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6160                                   struct wpa_ssid *ssid, int addr_allocated,
6161                                   int force_freq, int neg_freq,
6162                                   int vht_center_freq2, int ht40,
6163                                   int vht, int max_oper_chwidth,
6164                                   const struct p2p_channels *channels,
6165                                   int connection_timeout, int force_scan)
6166 {
6167         struct p2p_go_neg_results params;
6168         int go = 0, freq;
6169
6170         if (ssid->disabled != 2 || ssid->ssid == NULL)
6171                 return -1;
6172
6173         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6174             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6175                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6176                            "already running");
6177                 if (go == 0 &&
6178                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6179                                          wpa_s->p2pdev, NULL)) {
6180                         /*
6181                          * This can happen if Invitation Response frame was lost
6182                          * and the peer (GO of a persistent group) tries to
6183                          * invite us again. Reschedule the timeout to avoid
6184                          * terminating the wait for the connection too early
6185                          * since we now know that the peer is still trying to
6186                          * invite us instead of having already started the GO.
6187                          */
6188                         wpa_printf(MSG_DEBUG,
6189                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6190                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6191                                                wpas_p2p_group_formation_timeout,
6192                                                wpa_s->p2pdev, NULL);
6193                 }
6194                 return 0;
6195         }
6196
6197         os_free(wpa_s->global->add_psk);
6198         wpa_s->global->add_psk = NULL;
6199
6200         /* Make sure we are not running find during connection establishment */
6201         wpas_p2p_stop_find_oper(wpa_s);
6202
6203         wpa_s->p2p_fallback_to_go_neg = 0;
6204
6205         if (ssid->mode == WPAS_MODE_P2P_GO) {
6206                 if (force_freq > 0) {
6207                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6208                         if (freq < 0)
6209                                 return -1;
6210                 } else {
6211                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6212                         if (freq < 0 ||
6213                             (freq > 0 && !freq_included(wpa_s, channels, freq)))
6214                                 freq = 0;
6215                 }
6216         } else if (ssid->mode == WPAS_MODE_INFRA) {
6217                 freq = neg_freq;
6218                 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6219                         struct os_reltime now;
6220                         struct wpa_bss *bss =
6221                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6222
6223                         os_get_reltime(&now);
6224                         if (bss &&
6225                             !os_reltime_expired(&now, &bss->last_update, 5) &&
6226                             freq_included(wpa_s, channels, bss->freq))
6227                                 freq = bss->freq;
6228                         else
6229                                 freq = 0;
6230                 }
6231
6232                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6233                                              force_scan);
6234         } else {
6235                 return -1;
6236         }
6237
6238         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6239                                     ht40, vht, max_oper_chwidth, channels))
6240                 return -1;
6241
6242         params.role_go = 1;
6243         params.psk_set = ssid->psk_set;
6244         if (params.psk_set)
6245                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6246         if (ssid->passphrase) {
6247                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6248                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6249                                    "persistent group");
6250                         return -1;
6251                 }
6252                 os_strlcpy(params.passphrase, ssid->passphrase,
6253                            sizeof(params.passphrase));
6254         }
6255         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6256         params.ssid_len = ssid->ssid_len;
6257         params.persistent_group = 1;
6258
6259         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6260         if (wpa_s == NULL)
6261                 return -1;
6262
6263         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6264
6265         wpa_s->p2p_first_connection_timeout = connection_timeout;
6266         wpas_start_wps_go(wpa_s, &params, 0);
6267
6268         return 0;
6269 }
6270
6271
6272 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6273                                struct wpabuf *proberesp_ies)
6274 {
6275         struct wpa_supplicant *wpa_s = ctx;
6276         if (wpa_s->ap_iface) {
6277                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6278                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6279                         wpabuf_free(beacon_ies);
6280                         wpabuf_free(proberesp_ies);
6281                         return;
6282                 }
6283                 if (beacon_ies) {
6284                         wpabuf_free(hapd->p2p_beacon_ie);
6285                         hapd->p2p_beacon_ie = beacon_ies;
6286                 }
6287                 wpabuf_free(hapd->p2p_probe_resp_ie);
6288                 hapd->p2p_probe_resp_ie = proberesp_ies;
6289         } else {
6290                 wpabuf_free(beacon_ies);
6291                 wpabuf_free(proberesp_ies);
6292         }
6293         wpa_supplicant_ap_update_beacon(wpa_s);
6294 }
6295
6296
6297 static void wpas_p2p_idle_update(void *ctx, int idle)
6298 {
6299         struct wpa_supplicant *wpa_s = ctx;
6300         if (!wpa_s->ap_iface)
6301                 return;
6302         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6303         if (idle) {
6304                 if (wpa_s->global->p2p_fail_on_wps_complete &&
6305                     wpa_s->p2p_in_provisioning) {
6306                         wpas_p2p_grpform_fail_after_wps(wpa_s);
6307                         return;
6308                 }
6309                 wpas_p2p_set_group_idle_timeout(wpa_s);
6310         } else
6311                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6312 }
6313
6314
6315 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6316                                        struct wpa_ssid *ssid)
6317 {
6318         struct p2p_group *group;
6319         struct p2p_group_config *cfg;
6320
6321         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6322                 return NULL;
6323
6324         cfg = os_zalloc(sizeof(*cfg));
6325         if (cfg == NULL)
6326                 return NULL;
6327
6328         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6329                 cfg->persistent_group = 2;
6330         else if (ssid->p2p_persistent_group)
6331                 cfg->persistent_group = 1;
6332         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6333         if (wpa_s->max_stations &&
6334             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6335                 cfg->max_clients = wpa_s->max_stations;
6336         else
6337                 cfg->max_clients = wpa_s->conf->max_num_sta;
6338         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6339         cfg->ssid_len = ssid->ssid_len;
6340         cfg->freq = ssid->frequency;
6341         cfg->cb_ctx = wpa_s;
6342         cfg->ie_update = wpas_p2p_ie_update;
6343         cfg->idle_update = wpas_p2p_idle_update;
6344         cfg->ip_addr_alloc = WPA_GET_BE32(wpa_s->p2pdev->conf->ip_addr_start)
6345                 != 0;
6346
6347         group = p2p_group_init(wpa_s->global->p2p, cfg);
6348         if (group == NULL)
6349                 os_free(cfg);
6350         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6351                 p2p_group_notif_formation_done(group);
6352         wpa_s->p2p_group = group;
6353         return group;
6354 }
6355
6356
6357 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6358                           int registrar)
6359 {
6360         struct wpa_ssid *ssid = wpa_s->current_ssid;
6361
6362         if (!wpa_s->p2p_in_provisioning) {
6363                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6364                            "provisioning not in progress");
6365                 return;
6366         }
6367
6368         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6369                 u8 go_dev_addr[ETH_ALEN];
6370                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6371                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6372                                           ssid->ssid_len);
6373                 /* Clear any stored provisioning info */
6374                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6375         }
6376
6377         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6378                              NULL);
6379         wpa_s->p2p_go_group_formation_completed = 1;
6380         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6381                 /*
6382                  * Use a separate timeout for initial data connection to
6383                  * complete to allow the group to be removed automatically if
6384                  * something goes wrong in this step before the P2P group idle
6385                  * timeout mechanism is taken into use.
6386                  */
6387                 wpa_dbg(wpa_s, MSG_DEBUG,
6388                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6389                         P2P_MAX_INITIAL_CONN_WAIT);
6390                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6391                                        wpas_p2p_group_formation_timeout,
6392                                        wpa_s->p2pdev, NULL);
6393                 /* Complete group formation on successful data connection. */
6394                 wpa_s->p2p_go_group_formation_completed = 0;
6395         } else if (ssid) {
6396                 /*
6397                  * Use a separate timeout for initial data connection to
6398                  * complete to allow the group to be removed automatically if
6399                  * the client does not complete data connection successfully.
6400                  */
6401                 wpa_dbg(wpa_s, MSG_DEBUG,
6402                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6403                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6404                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6405                                        wpas_p2p_group_formation_timeout,
6406                                        wpa_s->p2pdev, NULL);
6407                 /*
6408                  * Complete group formation on first successful data connection
6409                  */
6410                 wpa_s->p2p_go_group_formation_completed = 0;
6411         }
6412         if (wpa_s->global->p2p)
6413                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6414         wpas_group_formation_completed(wpa_s, 1, 0);
6415 }
6416
6417
6418 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6419                          struct wps_event_fail *fail)
6420 {
6421         if (!wpa_s->p2p_in_provisioning) {
6422                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6423                            "provisioning not in progress");
6424                 return;
6425         }
6426
6427         if (wpa_s->go_params) {
6428                 p2p_clear_provisioning_info(
6429                         wpa_s->global->p2p,
6430                         wpa_s->go_params->peer_device_addr);
6431         }
6432
6433         wpas_notify_p2p_wps_failed(wpa_s, fail);
6434
6435         if (wpa_s == wpa_s->global->p2p_group_formation) {
6436                 /*
6437                  * Allow some time for the failed WPS negotiation exchange to
6438                  * complete, but remove the group since group formation cannot
6439                  * succeed after provisioning failure.
6440                  */
6441                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6442                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6443                 eloop_deplete_timeout(0, 50000,
6444                                       wpas_p2p_group_formation_timeout,
6445                                       wpa_s->p2pdev, NULL);
6446         }
6447 }
6448
6449
6450 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6451 {
6452         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6453             !wpa_s->p2p_in_provisioning)
6454                 return 0;
6455
6456         wpas_p2p_grpform_fail_after_wps(wpa_s);
6457
6458         return 1;
6459 }
6460
6461
6462 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6463                        const char *config_method,
6464                        enum wpas_p2p_prov_disc_use use,
6465                        struct p2ps_provision *p2ps_prov)
6466 {
6467         u16 config_methods;
6468
6469         wpa_s->global->pending_p2ps_group = 0;
6470         wpa_s->global->pending_p2ps_group_freq = 0;
6471         wpa_s->p2p_fallback_to_go_neg = 0;
6472         wpa_s->pending_pd_use = NORMAL_PD;
6473         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6474                 p2ps_prov->conncap = p2ps_group_capability(
6475                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6476                         &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6477
6478                 wpa_printf(MSG_DEBUG,
6479                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6480                            __func__, p2ps_prov->conncap,
6481                            p2ps_prov->adv_id, p2ps_prov->conncap,
6482                            p2ps_prov->status, p2ps_prov->info);
6483
6484                 config_methods = 0;
6485         } else if (os_strncmp(config_method, "display", 7) == 0)
6486                 config_methods = WPS_CONFIG_DISPLAY;
6487         else if (os_strncmp(config_method, "keypad", 6) == 0)
6488                 config_methods = WPS_CONFIG_KEYPAD;
6489         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6490                  os_strncmp(config_method, "pushbutton", 10) == 0)
6491                 config_methods = WPS_CONFIG_PUSHBUTTON;
6492         else {
6493                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6494                 os_free(p2ps_prov);
6495                 return -1;
6496         }
6497
6498         if (use == WPAS_P2P_PD_AUTO) {
6499                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6500                 wpa_s->pending_pd_config_methods = config_methods;
6501                 wpa_s->p2p_auto_pd = 1;
6502                 wpa_s->p2p_auto_join = 0;
6503                 wpa_s->pending_pd_before_join = 0;
6504                 wpa_s->auto_pd_scan_retry = 0;
6505                 wpas_p2p_stop_find(wpa_s);
6506                 wpa_s->p2p_join_scan_count = 0;
6507                 os_get_reltime(&wpa_s->p2p_auto_started);
6508                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6509                            wpa_s->p2p_auto_started.sec,
6510                            wpa_s->p2p_auto_started.usec);
6511                 wpas_p2p_join_scan(wpa_s, NULL);
6512                 return 0;
6513         }
6514
6515         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6516                 os_free(p2ps_prov);
6517                 return -1;
6518         }
6519
6520         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6521                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6522                                  0, 1);
6523 }
6524
6525
6526 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6527                               char *end)
6528 {
6529         return p2p_scan_result_text(ies, ies_len, buf, end);
6530 }
6531
6532
6533 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6534 {
6535         if (!offchannel_pending_action_tx(wpa_s))
6536                 return;
6537
6538         if (wpa_s->p2p_send_action_work) {
6539                 wpas_p2p_free_send_action_work(wpa_s);
6540                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
6541                                      wpa_s, NULL);
6542                 offchannel_send_action_done(wpa_s);
6543         }
6544
6545         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6546                    "operation request");
6547         offchannel_clear_pending_action_tx(wpa_s);
6548 }
6549
6550
6551 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6552                   enum p2p_discovery_type type,
6553                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6554                   const u8 *dev_id, unsigned int search_delay,
6555                   u8 seek_cnt, const char **seek_string, int freq)
6556 {
6557         wpas_p2p_clear_pending_action_tx(wpa_s);
6558         wpa_s->p2p_long_listen = 0;
6559
6560         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6561             wpa_s->p2p_in_provisioning)
6562                 return -1;
6563
6564         wpa_supplicant_cancel_sched_scan(wpa_s);
6565
6566         return p2p_find(wpa_s->global->p2p, timeout, type,
6567                         num_req_dev_types, req_dev_types, dev_id,
6568                         search_delay, seek_cnt, seek_string, freq);
6569 }
6570
6571
6572 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6573                                             struct wpa_scan_results *scan_res)
6574 {
6575         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6576
6577         if (wpa_s->p2p_scan_work) {
6578                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6579                 wpa_s->p2p_scan_work = NULL;
6580                 radio_work_done(work);
6581         }
6582
6583         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6584                 return;
6585
6586         /*
6587          * Indicate that results have been processed so that the P2P module can
6588          * continue pending tasks.
6589          */
6590         p2p_scan_res_handled(wpa_s->global->p2p);
6591 }
6592
6593
6594 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6595 {
6596         wpas_p2p_clear_pending_action_tx(wpa_s);
6597         wpa_s->p2p_long_listen = 0;
6598         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6599         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6600
6601         if (wpa_s->global->p2p)
6602                 p2p_stop_find(wpa_s->global->p2p);
6603
6604         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6605                 wpa_printf(MSG_DEBUG,
6606                            "P2P: Do not consider the scan results after stop_find");
6607                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6608         }
6609 }
6610
6611
6612 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6613 {
6614         wpas_p2p_stop_find_oper(wpa_s);
6615         if (!wpa_s->global->pending_group_iface_for_p2ps)
6616                 wpas_p2p_remove_pending_group_interface(wpa_s);
6617 }
6618
6619
6620 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6621 {
6622         struct wpa_supplicant *wpa_s = eloop_ctx;
6623         wpa_s->p2p_long_listen = 0;
6624 }
6625
6626
6627 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6628 {
6629         int res;
6630
6631         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6632                 return -1;
6633
6634         wpa_supplicant_cancel_sched_scan(wpa_s);
6635         wpas_p2p_clear_pending_action_tx(wpa_s);
6636
6637         if (timeout == 0) {
6638                 /*
6639                  * This is a request for unlimited Listen state. However, at
6640                  * least for now, this is mapped to a Listen state for one
6641                  * hour.
6642                  */
6643                 timeout = 3600;
6644         }
6645         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6646         wpa_s->p2p_long_listen = 0;
6647
6648         /*
6649          * Stop previous find/listen operation to avoid trying to request a new
6650          * remain-on-channel operation while the driver is still running the
6651          * previous one.
6652          */
6653         if (wpa_s->global->p2p)
6654                 p2p_stop_find(wpa_s->global->p2p);
6655
6656         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6657         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6658                 wpa_s->p2p_long_listen = timeout * 1000;
6659                 eloop_register_timeout(timeout, 0,
6660                                        wpas_p2p_long_listen_timeout,
6661                                        wpa_s, NULL);
6662         }
6663
6664         return res;
6665 }
6666
6667
6668 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6669                           u8 *buf, size_t len, int p2p_group)
6670 {
6671         struct wpabuf *p2p_ie;
6672         int ret;
6673
6674         if (wpa_s->global->p2p_disabled)
6675                 return -1;
6676         /*
6677          * Advertize mandatory cross connection capability even on
6678          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6679          */
6680         if (wpa_s->conf->p2p_disabled && p2p_group)
6681                 return -1;
6682         if (wpa_s->global->p2p == NULL)
6683                 return -1;
6684         if (bss == NULL)
6685                 return -1;
6686
6687         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6688         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6689                                p2p_group, p2p_ie);
6690         wpabuf_free(p2p_ie);
6691
6692         return ret;
6693 }
6694
6695
6696 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6697                           const u8 *dst, const u8 *bssid,
6698                           const u8 *ie, size_t ie_len,
6699                           unsigned int rx_freq, int ssi_signal)
6700 {
6701         if (wpa_s->global->p2p_disabled)
6702                 return 0;
6703         if (wpa_s->global->p2p == NULL)
6704                 return 0;
6705
6706         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6707                                  ie, ie_len, rx_freq)) {
6708         case P2P_PREQ_NOT_P2P:
6709                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6710                                  ssi_signal);
6711                 /* fall through */
6712         case P2P_PREQ_MALFORMED:
6713         case P2P_PREQ_NOT_LISTEN:
6714         case P2P_PREQ_NOT_PROCESSED:
6715         default: /* make gcc happy */
6716                 return 0;
6717         case P2P_PREQ_PROCESSED:
6718                 return 1;
6719         }
6720 }
6721
6722
6723 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6724                         const u8 *sa, const u8 *bssid,
6725                         u8 category, const u8 *data, size_t len, int freq)
6726 {
6727         if (wpa_s->global->p2p_disabled)
6728                 return;
6729         if (wpa_s->global->p2p == NULL)
6730                 return;
6731
6732         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6733                       freq);
6734 }
6735
6736
6737 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6738 {
6739         unsigned int bands;
6740
6741         if (wpa_s->global->p2p_disabled)
6742                 return;
6743         if (wpa_s->global->p2p == NULL)
6744                 return;
6745
6746         bands = wpas_get_bands(wpa_s, NULL);
6747         p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
6748 }
6749
6750
6751 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6752 {
6753         p2p_group_deinit(wpa_s->p2p_group);
6754         wpa_s->p2p_group = NULL;
6755
6756         wpa_s->ap_configured_cb = NULL;
6757         wpa_s->ap_configured_cb_ctx = NULL;
6758         wpa_s->ap_configured_cb_data = NULL;
6759         wpa_s->connect_without_scan = NULL;
6760 }
6761
6762
6763 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6764 {
6765         wpa_s->p2p_long_listen = 0;
6766
6767         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6768                 return -1;
6769
6770         return p2p_reject(wpa_s->global->p2p, addr);
6771 }
6772
6773
6774 /* Invite to reinvoke a persistent group */
6775 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6776                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6777                     int vht_center_freq2, int ht40, int vht, int max_chwidth,
6778                     int pref_freq)
6779 {
6780         enum p2p_invite_role role;
6781         u8 *bssid = NULL;
6782         int force_freq = 0;
6783         int res;
6784         int no_pref_freq_given = pref_freq == 0;
6785         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6786
6787         wpa_s->global->p2p_invite_group = NULL;
6788         if (peer_addr)
6789                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6790         else
6791                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6792
6793         wpa_s->p2p_persistent_go_freq = freq;
6794         wpa_s->p2p_go_ht40 = !!ht40;
6795         wpa_s->p2p_go_vht = !!vht;
6796         wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
6797         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
6798         if (ssid->mode == WPAS_MODE_P2P_GO) {
6799                 role = P2P_INVITE_ROLE_GO;
6800                 if (peer_addr == NULL) {
6801                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6802                                    "address in invitation command");
6803                         return -1;
6804                 }
6805                 if (wpas_p2p_create_iface(wpa_s)) {
6806                         if (wpas_p2p_add_group_interface(wpa_s,
6807                                                          WPA_IF_P2P_GO) < 0) {
6808                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6809                                            "allocate a new interface for the "
6810                                            "group");
6811                                 return -1;
6812                         }
6813                         bssid = wpa_s->pending_interface_addr;
6814                 } else if (wpa_s->p2p_mgmt)
6815                         bssid = wpa_s->parent->own_addr;
6816                 else
6817                         bssid = wpa_s->own_addr;
6818         } else {
6819                 role = P2P_INVITE_ROLE_CLIENT;
6820                 peer_addr = ssid->bssid;
6821         }
6822         wpa_s->pending_invite_ssid_id = ssid->id;
6823
6824         size = P2P_MAX_PREF_CHANNELS;
6825         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6826                                    role == P2P_INVITE_ROLE_GO,
6827                                    pref_freq_list, &size);
6828         if (res)
6829                 return res;
6830
6831         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6832                 return -1;
6833
6834         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6835
6836         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6837             no_pref_freq_given && pref_freq > 0 &&
6838             wpa_s->num_multichan_concurrent > 1 &&
6839             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6840                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6841                            pref_freq);
6842                 pref_freq = 0;
6843         }
6844
6845         /*
6846          * Stop any find/listen operations before invitation and possibly
6847          * connection establishment.
6848          */
6849         wpas_p2p_stop_find_oper(wpa_s);
6850
6851         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6852                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6853                           1, pref_freq, -1);
6854 }
6855
6856
6857 /* Invite to join an active group */
6858 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6859                           const u8 *peer_addr, const u8 *go_dev_addr)
6860 {
6861         struct wpa_global *global = wpa_s->global;
6862         enum p2p_invite_role role;
6863         u8 *bssid = NULL;
6864         struct wpa_ssid *ssid;
6865         int persistent;
6866         int freq = 0, force_freq = 0, pref_freq = 0;
6867         int res;
6868         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6869
6870         wpa_s->p2p_persistent_go_freq = 0;
6871         wpa_s->p2p_go_ht40 = 0;
6872         wpa_s->p2p_go_vht = 0;
6873         wpa_s->p2p_go_vht_center_freq2 = 0;
6874         wpa_s->p2p_go_max_oper_chwidth = 0;
6875
6876         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6877                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6878                         break;
6879         }
6880         if (wpa_s == NULL) {
6881                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6882                 return -1;
6883         }
6884
6885         ssid = wpa_s->current_ssid;
6886         if (ssid == NULL) {
6887                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6888                            "invitation");
6889                 return -1;
6890         }
6891
6892         wpa_s->global->p2p_invite_group = wpa_s;
6893         persistent = ssid->p2p_persistent_group &&
6894                 wpas_p2p_get_persistent(wpa_s->p2pdev, peer_addr,
6895                                         ssid->ssid, ssid->ssid_len);
6896
6897         if (ssid->mode == WPAS_MODE_P2P_GO) {
6898                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6899                 bssid = wpa_s->own_addr;
6900                 if (go_dev_addr == NULL)
6901                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6902                 freq = ssid->frequency;
6903         } else {
6904                 role = P2P_INVITE_ROLE_CLIENT;
6905                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6906                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6907                                    "invite to current group");
6908                         return -1;
6909                 }
6910                 bssid = wpa_s->bssid;
6911                 if (go_dev_addr == NULL &&
6912                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6913                         go_dev_addr = wpa_s->go_dev_addr;
6914                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6915                         (int) wpa_s->assoc_freq;
6916         }
6917         wpa_s->p2pdev->pending_invite_ssid_id = -1;
6918
6919         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6920                 return -1;
6921
6922         size = P2P_MAX_PREF_CHANNELS;
6923         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6924                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
6925                                    pref_freq_list, &size);
6926         if (res)
6927                 return res;
6928         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6929
6930         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6931                           ssid->ssid, ssid->ssid_len, force_freq,
6932                           go_dev_addr, persistent, pref_freq, -1);
6933 }
6934
6935
6936 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6937 {
6938         struct wpa_ssid *ssid = wpa_s->current_ssid;
6939         u8 go_dev_addr[ETH_ALEN];
6940         int network_id = -1;
6941         int persistent;
6942         int freq;
6943         u8 ip[3 * 4];
6944         char ip_addr[100];
6945
6946         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6947                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6948                                      wpa_s->p2pdev, NULL);
6949         }
6950
6951         if (!wpa_s->show_group_started || !ssid)
6952                 return;
6953
6954         wpa_s->show_group_started = 0;
6955         if (!wpa_s->p2p_go_group_formation_completed &&
6956             wpa_s->global->p2p_group_formation == wpa_s) {
6957                 wpa_dbg(wpa_s, MSG_DEBUG,
6958                         "P2P: Marking group formation completed on client on data connection");
6959                 wpa_s->p2p_go_group_formation_completed = 1;
6960                 wpa_s->global->p2p_group_formation = NULL;
6961                 wpa_s->p2p_in_provisioning = 0;
6962                 wpa_s->p2p_in_invitation = 0;
6963         }
6964
6965         os_memset(go_dev_addr, 0, ETH_ALEN);
6966         if (ssid->bssid_set)
6967                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6968         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6969                                                ssid->ssid_len);
6970         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6971
6972         if (wpa_s->global->p2p_group_formation == wpa_s)
6973                 wpa_s->global->p2p_group_formation = NULL;
6974
6975         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6976                 (int) wpa_s->assoc_freq;
6977
6978         ip_addr[0] = '\0';
6979         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6980                 int res;
6981
6982                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6983                                   " ip_addr=%u.%u.%u.%u "
6984                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6985                                   ip[0], ip[1], ip[2], ip[3],
6986                                   ip[4], ip[5], ip[6], ip[7],
6987                                   ip[8], ip[9], ip[10], ip[11]);
6988                 if (os_snprintf_error(sizeof(ip_addr), res))
6989                         ip_addr[0] = '\0';
6990         }
6991
6992         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6993                                ssid->passphrase == NULL && ssid->psk_set ?
6994                                ssid->psk : NULL,
6995                                ssid->passphrase, go_dev_addr, persistent,
6996                                ip_addr);
6997
6998         if (persistent)
6999                 network_id = wpas_p2p_store_persistent_group(wpa_s->p2pdev,
7000                                                              ssid, go_dev_addr);
7001         if (network_id < 0)
7002                 network_id = ssid->id;
7003         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
7004 }
7005
7006
7007 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
7008                           u32 interval1, u32 duration2, u32 interval2)
7009 {
7010         int ret;
7011
7012         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7013                 return -1;
7014
7015         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
7016             wpa_s->current_ssid == NULL ||
7017             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
7018                 return -1;
7019
7020         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
7021                                wpa_s->own_addr, wpa_s->assoc_freq,
7022                                duration1, interval1, duration2, interval2);
7023         if (ret == 0)
7024                 wpa_s->waiting_presence_resp = 1;
7025
7026         return ret;
7027 }
7028
7029
7030 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
7031                         unsigned int interval)
7032 {
7033         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7034                 return -1;
7035
7036         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
7037 }
7038
7039
7040 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
7041 {
7042         if (wpa_s->current_ssid == NULL) {
7043                 /*
7044                  * current_ssid can be cleared when P2P client interface gets
7045                  * disconnected, so assume this interface was used as P2P
7046                  * client.
7047                  */
7048                 return 1;
7049         }
7050         return wpa_s->current_ssid->p2p_group &&
7051                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
7052 }
7053
7054
7055 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
7056 {
7057         struct wpa_supplicant *wpa_s = eloop_ctx;
7058
7059         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
7060                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
7061                            "disabled");
7062                 return;
7063         }
7064
7065         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
7066                    "group");
7067         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7068 }
7069
7070
7071 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7072 {
7073         int timeout;
7074
7075         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7076                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7077
7078         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7079                 return;
7080
7081         timeout = wpa_s->conf->p2p_group_idle;
7082         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7083             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7084             timeout = P2P_MAX_CLIENT_IDLE;
7085
7086         if (timeout == 0)
7087                 return;
7088
7089         if (timeout < 0) {
7090                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7091                         timeout = 0; /* special client mode no-timeout */
7092                 else
7093                         return;
7094         }
7095
7096         if (wpa_s->p2p_in_provisioning) {
7097                 /*
7098                  * Use the normal group formation timeout during the
7099                  * provisioning phase to avoid terminating this process too
7100                  * early due to group idle timeout.
7101                  */
7102                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7103                            "during provisioning");
7104                 return;
7105         }
7106
7107         if (wpa_s->show_group_started) {
7108                 /*
7109                  * Use the normal group formation timeout between the end of
7110                  * the provisioning phase and completion of 4-way handshake to
7111                  * avoid terminating this process too early due to group idle
7112                  * timeout.
7113                  */
7114                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7115                            "while waiting for initial 4-way handshake to "
7116                            "complete");
7117                 return;
7118         }
7119
7120         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7121                    timeout);
7122         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7123                                wpa_s, NULL);
7124 }
7125
7126
7127 /* Returns 1 if the interface was removed */
7128 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7129                           u16 reason_code, const u8 *ie, size_t ie_len,
7130                           int locally_generated)
7131 {
7132         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7133                 return 0;
7134
7135         if (!locally_generated)
7136                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7137                                  ie_len);
7138
7139         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7140             wpa_s->current_ssid &&
7141             wpa_s->current_ssid->p2p_group &&
7142             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7143                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7144                            "session is ending");
7145                 if (wpas_p2p_group_delete(wpa_s,
7146                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7147                     > 0)
7148                         return 1;
7149         }
7150
7151         return 0;
7152 }
7153
7154
7155 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7156                              u16 reason_code, const u8 *ie, size_t ie_len,
7157                              int locally_generated)
7158 {
7159         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7160                 return;
7161
7162         if (!locally_generated)
7163                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7164                                    ie_len);
7165 }
7166
7167
7168 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7169 {
7170         struct p2p_data *p2p = wpa_s->global->p2p;
7171
7172         if (p2p == NULL)
7173                 return;
7174
7175         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7176                 return;
7177
7178         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7179                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7180
7181         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7182                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7183
7184         if (wpa_s->wps &&
7185             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7186                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7187
7188         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7189                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7190
7191         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7192                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7193                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7194                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7195                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7196         }
7197
7198         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7199                 p2p_set_sec_dev_types(p2p,
7200                                       (void *) wpa_s->conf->sec_device_type,
7201                                       wpa_s->conf->num_sec_device_types);
7202
7203         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7204                 int i;
7205                 p2p_remove_wps_vendor_extensions(p2p);
7206                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7207                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7208                                 continue;
7209                         p2p_add_wps_vendor_extension(
7210                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
7211                 }
7212         }
7213
7214         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7215             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7216                 char country[3];
7217                 country[0] = wpa_s->conf->country[0];
7218                 country[1] = wpa_s->conf->country[1];
7219                 country[2] = 0x04;
7220                 p2p_set_country(p2p, country);
7221         }
7222
7223         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7224                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7225                                      wpa_s->conf->p2p_ssid_postfix ?
7226                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7227                                      0);
7228         }
7229
7230         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7231                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7232
7233         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7234                 u8 reg_class, channel;
7235                 int ret;
7236                 unsigned int r;
7237                 u8 channel_forced;
7238
7239                 if (wpa_s->conf->p2p_listen_reg_class &&
7240                     wpa_s->conf->p2p_listen_channel) {
7241                         reg_class = wpa_s->conf->p2p_listen_reg_class;
7242                         channel = wpa_s->conf->p2p_listen_channel;
7243                         channel_forced = 1;
7244                 } else {
7245                         reg_class = 81;
7246                         /*
7247                          * Pick one of the social channels randomly as the
7248                          * listen channel.
7249                          */
7250                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7251                                 channel = 1;
7252                         else
7253                                 channel = 1 + (r % 3) * 5;
7254                         channel_forced = 0;
7255                 }
7256                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7257                                              channel_forced);
7258                 if (ret)
7259                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7260                                    "failed: %d", ret);
7261         }
7262         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7263                 u8 op_reg_class, op_channel, cfg_op_channel;
7264                 int ret = 0;
7265                 unsigned int r;
7266                 if (wpa_s->conf->p2p_oper_reg_class &&
7267                     wpa_s->conf->p2p_oper_channel) {
7268                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7269                         op_channel = wpa_s->conf->p2p_oper_channel;
7270                         cfg_op_channel = 1;
7271                 } else {
7272                         op_reg_class = 81;
7273                         /*
7274                          * Use random operation channel from (1, 6, 11)
7275                          *if no other preference is indicated.
7276                          */
7277                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7278                                 op_channel = 1;
7279                         else
7280                                 op_channel = 1 + (r % 3) * 5;
7281                         cfg_op_channel = 0;
7282                 }
7283                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7284                                            cfg_op_channel);
7285                 if (ret)
7286                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7287                                    "failed: %d", ret);
7288         }
7289
7290         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7291                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7292                                       wpa_s->conf->p2p_pref_chan) < 0) {
7293                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7294                                    "update failed");
7295                 }
7296
7297                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7298                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7299                                    "update failed");
7300                 }
7301         }
7302
7303         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7304                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7305 }
7306
7307
7308 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7309                      int duration)
7310 {
7311         if (!wpa_s->ap_iface)
7312                 return -1;
7313         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7314                                    duration);
7315 }
7316
7317
7318 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7319 {
7320         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7321                 return -1;
7322
7323         wpa_s->global->cross_connection = enabled;
7324         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7325
7326         if (!enabled) {
7327                 struct wpa_supplicant *iface;
7328
7329                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7330                 {
7331                         if (iface->cross_connect_enabled == 0)
7332                                 continue;
7333
7334                         iface->cross_connect_enabled = 0;
7335                         iface->cross_connect_in_use = 0;
7336                         wpa_msg_global(iface->p2pdev, MSG_INFO,
7337                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7338                                        iface->ifname,
7339                                        iface->cross_connect_uplink);
7340                 }
7341         }
7342
7343         return 0;
7344 }
7345
7346
7347 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7348 {
7349         struct wpa_supplicant *iface;
7350
7351         if (!uplink->global->cross_connection)
7352                 return;
7353
7354         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7355                 if (!iface->cross_connect_enabled)
7356                         continue;
7357                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7358                     0)
7359                         continue;
7360                 if (iface->ap_iface == NULL)
7361                         continue;
7362                 if (iface->cross_connect_in_use)
7363                         continue;
7364
7365                 iface->cross_connect_in_use = 1;
7366                 wpa_msg_global(iface->p2pdev, MSG_INFO,
7367                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7368                                iface->ifname, iface->cross_connect_uplink);
7369         }
7370 }
7371
7372
7373 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7374 {
7375         struct wpa_supplicant *iface;
7376
7377         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7378                 if (!iface->cross_connect_enabled)
7379                         continue;
7380                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7381                     0)
7382                         continue;
7383                 if (!iface->cross_connect_in_use)
7384                         continue;
7385
7386                 wpa_msg_global(iface->p2pdev, MSG_INFO,
7387                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7388                                iface->ifname, iface->cross_connect_uplink);
7389                 iface->cross_connect_in_use = 0;
7390         }
7391 }
7392
7393
7394 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7395 {
7396         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7397             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7398             wpa_s->cross_connect_disallowed)
7399                 wpas_p2p_disable_cross_connect(wpa_s);
7400         else
7401                 wpas_p2p_enable_cross_connect(wpa_s);
7402         if (!wpa_s->ap_iface &&
7403             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7404                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7405 }
7406
7407
7408 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7409 {
7410         wpas_p2p_disable_cross_connect(wpa_s);
7411         if (!wpa_s->ap_iface &&
7412             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7413                                          wpa_s, NULL))
7414                 wpas_p2p_set_group_idle_timeout(wpa_s);
7415 }
7416
7417
7418 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7419 {
7420         struct wpa_supplicant *iface;
7421
7422         if (!wpa_s->global->cross_connection)
7423                 return;
7424
7425         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7426                 if (iface == wpa_s)
7427                         continue;
7428                 if (iface->drv_flags &
7429                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7430                         continue;
7431                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7432                     iface != wpa_s->parent)
7433                         continue;
7434
7435                 wpa_s->cross_connect_enabled = 1;
7436                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7437                            sizeof(wpa_s->cross_connect_uplink));
7438                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7439                            "%s to %s whenever uplink is available",
7440                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7441
7442                 if (iface->ap_iface || iface->current_ssid == NULL ||
7443                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7444                     iface->cross_connect_disallowed ||
7445                     iface->wpa_state != WPA_COMPLETED)
7446                         break;
7447
7448                 wpa_s->cross_connect_in_use = 1;
7449                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
7450                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7451                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7452                 break;
7453         }
7454 }
7455
7456
7457 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7458 {
7459         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7460             !wpa_s->p2p_in_provisioning)
7461                 return 0; /* not P2P client operation */
7462
7463         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7464                    "session overlap");
7465         if (wpa_s != wpa_s->p2pdev)
7466                 wpa_msg_ctrl(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_OVERLAP);
7467         wpas_p2p_group_formation_failed(wpa_s, 0);
7468         return 1;
7469 }
7470
7471
7472 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7473 {
7474         struct wpa_supplicant *wpa_s = eloop_ctx;
7475         wpas_p2p_notif_pbc_overlap(wpa_s);
7476 }
7477
7478
7479 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7480                                   enum wpas_p2p_channel_update_trig trig)
7481 {
7482         struct p2p_channels chan, cli_chan;
7483         struct wpa_used_freq_data *freqs = NULL;
7484         unsigned int num = wpa_s->num_multichan_concurrent;
7485
7486         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7487                 return;
7488
7489         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7490         if (!freqs)
7491                 return;
7492
7493         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7494
7495         os_memset(&chan, 0, sizeof(chan));
7496         os_memset(&cli_chan, 0, sizeof(cli_chan));
7497         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7498                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7499                            "channel list");
7500                 return;
7501         }
7502
7503         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7504
7505         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7506
7507         /*
7508          * The used frequencies map changed, so it is possible that a GO is
7509          * using a channel that is no longer valid for P2P use. It is also
7510          * possible that due to policy consideration, it would be preferable to
7511          * move it to a frequency already used by other station interfaces.
7512          */
7513         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7514
7515         os_free(freqs);
7516 }
7517
7518
7519 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7520                                      struct wpa_scan_results *scan_res)
7521 {
7522         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7523 }
7524
7525
7526 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7527 {
7528         struct wpa_global *global = wpa_s->global;
7529         int found = 0;
7530         const u8 *peer;
7531
7532         if (global->p2p == NULL)
7533                 return -1;
7534
7535         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7536
7537         if (wpa_s->pending_interface_name[0] &&
7538             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7539                 found = 1;
7540
7541         peer = p2p_get_go_neg_peer(global->p2p);
7542         if (peer) {
7543                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7544                            MACSTR, MAC2STR(peer));
7545                 p2p_unauthorize(global->p2p, peer);
7546                 found = 1;
7547         }
7548
7549         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7550                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7551                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7552                 found = 1;
7553         }
7554
7555         if (wpa_s->pending_pd_before_join) {
7556                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7557                 wpa_s->pending_pd_before_join = 0;
7558                 found = 1;
7559         }
7560
7561         wpas_p2p_stop_find(wpa_s);
7562
7563         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7564                 if (wpa_s == global->p2p_group_formation &&
7565                     (wpa_s->p2p_in_provisioning ||
7566                      wpa_s->parent->pending_interface_type ==
7567                      WPA_IF_P2P_CLIENT)) {
7568                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7569                                    "formation found - cancelling",
7570                                    wpa_s->ifname);
7571                         found = 1;
7572                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7573                                              wpa_s->p2pdev, NULL);
7574                         if (wpa_s->p2p_in_provisioning) {
7575                                 wpas_group_formation_completed(wpa_s, 0, 0);
7576                                 break;
7577                         }
7578                         wpas_p2p_group_delete(wpa_s,
7579                                               P2P_GROUP_REMOVAL_REQUESTED);
7580                         break;
7581                 } else if (wpa_s->p2p_in_invitation) {
7582                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7583                                    wpa_s->ifname);
7584                         found = 1;
7585                         wpas_p2p_group_formation_failed(wpa_s, 0);
7586                         break;
7587                 }
7588         }
7589
7590         if (!found) {
7591                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7592                 return -1;
7593         }
7594
7595         return 0;
7596 }
7597
7598
7599 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7600 {
7601         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7602                 return;
7603
7604         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7605                    "being available anymore");
7606         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7607 }
7608
7609
7610 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7611                                    int freq_24, int freq_5, int freq_overall)
7612 {
7613         struct p2p_data *p2p = wpa_s->global->p2p;
7614         if (p2p == NULL)
7615                 return;
7616         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7617 }
7618
7619
7620 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7621 {
7622         u8 peer[ETH_ALEN];
7623         struct p2p_data *p2p = wpa_s->global->p2p;
7624
7625         if (p2p == NULL)
7626                 return -1;
7627
7628         if (hwaddr_aton(addr, peer))
7629                 return -1;
7630
7631         return p2p_unauthorize(p2p, peer);
7632 }
7633
7634
7635 /**
7636  * wpas_p2p_disconnect - Disconnect from a P2P Group
7637  * @wpa_s: Pointer to wpa_supplicant data
7638  * Returns: 0 on success, -1 on failure
7639  *
7640  * This can be used to disconnect from a group in which the local end is a P2P
7641  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7642  * virtual network interface was created for this group, that interface will be
7643  * removed. Otherwise, only the configured P2P group network will be removed
7644  * from the interface.
7645  */
7646 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7647 {
7648
7649         if (wpa_s == NULL)
7650                 return -1;
7651
7652         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7653                 -1 : 0;
7654 }
7655
7656
7657 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7658 {
7659         int ret;
7660
7661         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7662                 return 0;
7663
7664         ret = p2p_in_progress(wpa_s->global->p2p);
7665         if (ret == 0) {
7666                 /*
7667                  * Check whether there is an ongoing WPS provisioning step (or
7668                  * other parts of group formation) on another interface since
7669                  * p2p_in_progress() does not report this to avoid issues for
7670                  * scans during such provisioning step.
7671                  */
7672                 if (wpa_s->global->p2p_group_formation &&
7673                     wpa_s->global->p2p_group_formation != wpa_s) {
7674                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7675                                 "in group formation",
7676                                 wpa_s->global->p2p_group_formation->ifname);
7677                         ret = 1;
7678                 }
7679         }
7680
7681         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7682                 struct os_reltime now;
7683                 os_get_reltime(&now);
7684                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7685                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7686                         /* Wait for the first client has expired */
7687                         wpa_s->global->p2p_go_wait_client.sec = 0;
7688                 } else {
7689                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7690                         ret = 1;
7691                 }
7692         }
7693
7694         return ret;
7695 }
7696
7697
7698 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7699                               struct wpa_ssid *ssid)
7700 {
7701         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7702             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7703                                  wpa_s->p2pdev, NULL) > 0) {
7704                 /**
7705                  * Remove the network by scheduling the group formation
7706                  * timeout to happen immediately. The teardown code
7707                  * needs to be scheduled to run asynch later so that we
7708                  * don't delete data from under ourselves unexpectedly.
7709                  * Calling wpas_p2p_group_formation_timeout directly
7710                  * causes a series of crashes in WPS failure scenarios.
7711                  */
7712                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7713                            "P2P group network getting removed");
7714                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7715                                        wpa_s->p2pdev, NULL);
7716         }
7717 }
7718
7719
7720 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7721                                           const u8 *addr, const u8 *ssid,
7722                                           size_t ssid_len)
7723 {
7724         struct wpa_ssid *s;
7725         size_t i;
7726
7727         for (s = wpa_s->conf->ssid; s; s = s->next) {
7728                 if (s->disabled != 2)
7729                         continue;
7730                 if (ssid &&
7731                     (ssid_len != s->ssid_len ||
7732                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7733                         continue;
7734                 if (addr == NULL) {
7735                         if (s->mode == WPAS_MODE_P2P_GO)
7736                                 return s;
7737                         continue;
7738                 }
7739                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7740                         return s; /* peer is GO in the persistent group */
7741                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7742                         continue;
7743                 for (i = 0; i < s->num_p2p_clients; i++) {
7744                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7745                                       addr, ETH_ALEN) == 0)
7746                                 return s; /* peer is P2P client in persistent
7747                                            * group */
7748                 }
7749         }
7750
7751         return NULL;
7752 }
7753
7754
7755 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7756                                        const u8 *addr)
7757 {
7758         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7759                                  wpa_s->p2pdev, NULL) > 0) {
7760                 /*
7761                  * This can happen if WPS provisioning step is not terminated
7762                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7763                  * peer was able to connect, there is no need to time out group
7764                  * formation after this, though. In addition, this is used with
7765                  * the initial connection wait on the GO as a separate formation
7766                  * timeout and as such, expected to be hit after the initial WPS
7767                  * provisioning step.
7768                  */
7769                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7770
7771                 if (!wpa_s->p2p_go_group_formation_completed &&
7772                     !wpa_s->group_formation_reported) {
7773                         /*
7774                          * GO has not yet notified group formation success since
7775                          * the WPS step was not completed cleanly. Do that
7776                          * notification now since the P2P Client was able to
7777                          * connect and as such, must have received the
7778                          * credential from the WPS step.
7779                          */
7780                         if (wpa_s->global->p2p)
7781                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7782                         wpas_group_formation_completed(wpa_s, 1, 0);
7783                 }
7784         }
7785         if (!wpa_s->p2p_go_group_formation_completed) {
7786                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7787                 wpa_s->p2p_go_group_formation_completed = 1;
7788                 wpa_s->global->p2p_group_formation = NULL;
7789                 wpa_s->p2p_in_provisioning = 0;
7790                 wpa_s->p2p_in_invitation = 0;
7791         }
7792         wpa_s->global->p2p_go_wait_client.sec = 0;
7793         if (addr == NULL)
7794                 return;
7795         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7796 }
7797
7798
7799 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7800                                        int group_added)
7801 {
7802         struct wpa_supplicant *group = wpa_s;
7803         int ret = 0;
7804
7805         if (wpa_s->global->p2p_group_formation)
7806                 group = wpa_s->global->p2p_group_formation;
7807         wpa_s = wpa_s->global->p2p_init_wpa_s;
7808         offchannel_send_action_done(wpa_s);
7809         if (group_added)
7810                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7811         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7812         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7813                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7814                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7815                          wpa_s->p2p_go_vht_center_freq2,
7816                          wpa_s->p2p_persistent_id,
7817                          wpa_s->p2p_pd_before_go_neg,
7818                          wpa_s->p2p_go_ht40,
7819                          wpa_s->p2p_go_vht,
7820                          wpa_s->p2p_go_max_oper_chwidth, NULL, 0);
7821         return ret;
7822 }
7823
7824
7825 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7826 {
7827         int res;
7828
7829         if (!wpa_s->p2p_fallback_to_go_neg ||
7830             wpa_s->p2p_in_provisioning <= 5)
7831                 return 0;
7832
7833         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7834                 return 0; /* peer operating as a GO */
7835
7836         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7837                 "fallback to GO Negotiation");
7838         wpa_msg_global(wpa_s->p2pdev, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7839                        "reason=GO-not-found");
7840         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7841
7842         return res == 1 ? 2 : 1;
7843 }
7844
7845
7846 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7847 {
7848         struct wpa_supplicant *ifs;
7849
7850         if (wpa_s->wpa_state > WPA_SCANNING) {
7851                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7852                         "concurrent operation",
7853                         wpa_s->conf->p2p_search_delay);
7854                 return wpa_s->conf->p2p_search_delay;
7855         }
7856
7857         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7858                          radio_list) {
7859                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7860                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7861                                 "delay due to concurrent operation on "
7862                                 "interface %s",
7863                                 wpa_s->conf->p2p_search_delay,
7864                                 ifs->ifname);
7865                         return wpa_s->conf->p2p_search_delay;
7866                 }
7867         }
7868
7869         return 0;
7870 }
7871
7872
7873 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7874                                      struct wpa_ssid *s, const u8 *addr,
7875                                      int iface_addr)
7876 {
7877         struct psk_list_entry *psk, *tmp;
7878         int changed = 0;
7879
7880         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7881                               list) {
7882                 if ((iface_addr && !psk->p2p &&
7883                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7884                     (!iface_addr && psk->p2p &&
7885                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7886                         wpa_dbg(wpa_s, MSG_DEBUG,
7887                                 "P2P: Remove persistent group PSK list entry for "
7888                                 MACSTR " p2p=%u",
7889                                 MAC2STR(psk->addr), psk->p2p);
7890                         dl_list_del(&psk->list);
7891                         os_free(psk);
7892                         changed++;
7893                 }
7894         }
7895
7896         return changed;
7897 }
7898
7899
7900 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7901                          const u8 *p2p_dev_addr,
7902                          const u8 *psk, size_t psk_len)
7903 {
7904         struct wpa_ssid *ssid = wpa_s->current_ssid;
7905         struct wpa_ssid *persistent;
7906         struct psk_list_entry *p, *last;
7907
7908         if (psk_len != sizeof(p->psk))
7909                 return;
7910
7911         if (p2p_dev_addr) {
7912                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7913                         " p2p_dev_addr=" MACSTR,
7914                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7915                 if (is_zero_ether_addr(p2p_dev_addr))
7916                         p2p_dev_addr = NULL;
7917         } else {
7918                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7919                         MAC2STR(mac_addr));
7920         }
7921
7922         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7923                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7924                 /* To be added to persistent group once created */
7925                 if (wpa_s->global->add_psk == NULL) {
7926                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7927                         if (wpa_s->global->add_psk == NULL)
7928                                 return;
7929                 }
7930                 p = wpa_s->global->add_psk;
7931                 if (p2p_dev_addr) {
7932                         p->p2p = 1;
7933                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7934                 } else {
7935                         p->p2p = 0;
7936                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7937                 }
7938                 os_memcpy(p->psk, psk, psk_len);
7939                 return;
7940         }
7941
7942         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7943                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7944                 return;
7945         }
7946
7947         persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
7948                                              ssid->ssid_len);
7949         if (!persistent) {
7950                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7951                 return;
7952         }
7953
7954         p = os_zalloc(sizeof(*p));
7955         if (p == NULL)
7956                 return;
7957         if (p2p_dev_addr) {
7958                 p->p2p = 1;
7959                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7960         } else {
7961                 p->p2p = 0;
7962                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7963         }
7964         os_memcpy(p->psk, psk, psk_len);
7965
7966         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7967             (last = dl_list_last(&persistent->psk_list,
7968                                  struct psk_list_entry, list))) {
7969                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7970                         MACSTR " (p2p=%u) to make room for a new one",
7971                         MAC2STR(last->addr), last->p2p);
7972                 dl_list_del(&last->list);
7973                 os_free(last);
7974         }
7975
7976         wpas_p2p_remove_psk_entry(wpa_s->p2pdev, persistent,
7977                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7978                                   p2p_dev_addr == NULL);
7979         if (p2p_dev_addr) {
7980                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7981                         MACSTR, MAC2STR(p2p_dev_addr));
7982         } else {
7983                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7984                         MAC2STR(mac_addr));
7985         }
7986         dl_list_add(&persistent->psk_list, &p->list);
7987
7988         if (wpa_s->p2pdev->conf->update_config &&
7989             wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
7990                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7991 }
7992
7993
7994 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7995                                 struct wpa_ssid *s, const u8 *addr,
7996                                 int iface_addr)
7997 {
7998         int res;
7999
8000         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
8001         if (res > 0 && wpa_s->conf->update_config &&
8002             wpa_config_write(wpa_s->confname, wpa_s->conf))
8003                 wpa_dbg(wpa_s, MSG_DEBUG,
8004                         "P2P: Failed to update configuration");
8005 }
8006
8007
8008 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
8009                                       const u8 *peer, int iface_addr)
8010 {
8011         struct hostapd_data *hapd;
8012         struct hostapd_wpa_psk *psk, *prev, *rem;
8013         struct sta_info *sta;
8014
8015         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
8016             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
8017                 return;
8018
8019         /* Remove per-station PSK entry */
8020         hapd = wpa_s->ap_iface->bss[0];
8021         prev = NULL;
8022         psk = hapd->conf->ssid.wpa_psk;
8023         while (psk) {
8024                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
8025                     (!iface_addr &&
8026                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
8027                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
8028                                 MACSTR " iface_addr=%d",
8029                                 MAC2STR(peer), iface_addr);
8030                         if (prev)
8031                                 prev->next = psk->next;
8032                         else
8033                                 hapd->conf->ssid.wpa_psk = psk->next;
8034                         rem = psk;
8035                         psk = psk->next;
8036                         os_free(rem);
8037                 } else {
8038                         prev = psk;
8039                         psk = psk->next;
8040                 }
8041         }
8042
8043         /* Disconnect from group */
8044         if (iface_addr)
8045                 sta = ap_get_sta(hapd, peer);
8046         else
8047                 sta = ap_get_sta_p2p(hapd, peer);
8048         if (sta) {
8049                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
8050                         " (iface_addr=%d) from group",
8051                         MAC2STR(peer), iface_addr);
8052                 hostapd_drv_sta_deauth(hapd, sta->addr,
8053                                        WLAN_REASON_DEAUTH_LEAVING);
8054                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
8055         }
8056 }
8057
8058
8059 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
8060                             int iface_addr)
8061 {
8062         struct wpa_ssid *s;
8063         struct wpa_supplicant *w;
8064         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
8065
8066         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
8067
8068         /* Remove from any persistent group */
8069         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
8070                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8071                         continue;
8072                 if (!iface_addr)
8073                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
8074                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
8075         }
8076
8077         /* Remove from any operating group */
8078         for (w = wpa_s->global->ifaces; w; w = w->next)
8079                 wpas_p2p_remove_client_go(w, peer, iface_addr);
8080 }
8081
8082
8083 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8084 {
8085         struct wpa_supplicant *wpa_s = eloop_ctx;
8086         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8087 }
8088
8089
8090 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8091 {
8092         struct wpa_supplicant *wpa_s = eloop_ctx;
8093
8094         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8095         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8096 }
8097
8098
8099 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8100                                         struct wpa_ssid *ssid)
8101 {
8102         struct wpa_supplicant *iface;
8103
8104         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8105                 if (!iface->current_ssid ||
8106                     iface->current_ssid->frequency == freq ||
8107                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8108                      !iface->current_ssid->p2p_group))
8109                         continue;
8110
8111                 /* Remove the connection with least priority */
8112                 if (!wpas_is_p2p_prioritized(iface)) {
8113                         /* STA connection has priority over existing
8114                          * P2P connection, so remove the interface. */
8115                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8116                         eloop_register_timeout(0, 0,
8117                                                wpas_p2p_group_freq_conflict,
8118                                                iface, NULL);
8119                         /* If connection in progress is P2P connection, do not
8120                          * proceed for the connection. */
8121                         if (wpa_s == iface)
8122                                 return -1;
8123                         else
8124                                 return 0;
8125                 } else {
8126                         /* P2P connection has priority, disable the STA network
8127                          */
8128                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
8129                                                        ssid);
8130                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8131                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8132                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8133                                   ETH_ALEN);
8134                         /* If P2P connection is in progress, continue
8135                          * connecting...*/
8136                         if (wpa_s == iface)
8137                                 return 0;
8138                         else
8139                                 return -1;
8140                 }
8141         }
8142
8143         return 0;
8144 }
8145
8146
8147 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8148 {
8149         struct wpa_ssid *ssid = wpa_s->current_ssid;
8150
8151         if (ssid == NULL || !ssid->p2p_group)
8152                 return 0;
8153
8154         if (wpa_s->p2p_last_4way_hs_fail &&
8155             wpa_s->p2p_last_4way_hs_fail == ssid) {
8156                 u8 go_dev_addr[ETH_ALEN];
8157                 struct wpa_ssid *persistent;
8158
8159                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8160                                               ssid->ssid,
8161                                               ssid->ssid_len) <= 0) {
8162                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8163                         goto disconnect;
8164                 }
8165
8166                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8167                         MACSTR, MAC2STR(go_dev_addr));
8168                 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, go_dev_addr,
8169                                                      ssid->ssid,
8170                                                      ssid->ssid_len);
8171                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8172                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8173                         goto disconnect;
8174                 }
8175                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
8176                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8177                                persistent->id);
8178         disconnect:
8179                 wpa_s->p2p_last_4way_hs_fail = NULL;
8180                 /*
8181                  * Remove the group from a timeout to avoid issues with caller
8182                  * continuing to use the interface if this is on a P2P group
8183                  * interface.
8184                  */
8185                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8186                                        wpa_s, NULL);
8187                 return 1;
8188         }
8189
8190         wpa_s->p2p_last_4way_hs_fail = ssid;
8191         return 0;
8192 }
8193
8194
8195 #ifdef CONFIG_WPS_NFC
8196
8197 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8198                                              struct wpabuf *p2p)
8199 {
8200         struct wpabuf *ret;
8201         size_t wsc_len;
8202
8203         if (p2p == NULL) {
8204                 wpabuf_free(wsc);
8205                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8206                 return NULL;
8207         }
8208
8209         wsc_len = wsc ? wpabuf_len(wsc) : 0;
8210         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8211         if (ret == NULL) {
8212                 wpabuf_free(wsc);
8213                 wpabuf_free(p2p);
8214                 return NULL;
8215         }
8216
8217         wpabuf_put_be16(ret, wsc_len);
8218         if (wsc)
8219                 wpabuf_put_buf(ret, wsc);
8220         wpabuf_put_be16(ret, wpabuf_len(p2p));
8221         wpabuf_put_buf(ret, p2p);
8222
8223         wpabuf_free(wsc);
8224         wpabuf_free(p2p);
8225         wpa_hexdump_buf(MSG_DEBUG,
8226                         "P2P: Generated NFC connection handover message", ret);
8227
8228         if (ndef && ret) {
8229                 struct wpabuf *tmp;
8230                 tmp = ndef_build_p2p(ret);
8231                 wpabuf_free(ret);
8232                 if (tmp == NULL) {
8233                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8234                         return NULL;
8235                 }
8236                 ret = tmp;
8237         }
8238
8239         return ret;
8240 }
8241
8242
8243 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8244                              struct wpa_ssid **ssid, u8 *go_dev_addr)
8245 {
8246         struct wpa_supplicant *iface;
8247
8248         if (go_dev_addr)
8249                 os_memset(go_dev_addr, 0, ETH_ALEN);
8250         if (ssid)
8251                 *ssid = NULL;
8252         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8253                 if (iface->wpa_state < WPA_ASSOCIATING ||
8254                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8255                     !iface->current_ssid->p2p_group ||
8256                     iface->current_ssid->mode != WPAS_MODE_INFRA)
8257                         continue;
8258                 if (ssid)
8259                         *ssid = iface->current_ssid;
8260                 if (go_dev_addr)
8261                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8262                 return iface->assoc_freq;
8263         }
8264         return 0;
8265 }
8266
8267
8268 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8269                                           int ndef)
8270 {
8271         struct wpabuf *wsc, *p2p;
8272         struct wpa_ssid *ssid;
8273         u8 go_dev_addr[ETH_ALEN];
8274         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8275
8276         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8277                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8278                 return NULL;
8279         }
8280
8281         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8282             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8283                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8284                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8285                 return NULL;
8286         }
8287
8288         if (cli_freq == 0) {
8289                 wsc = wps_build_nfc_handover_req_p2p(
8290                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8291         } else
8292                 wsc = NULL;
8293         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8294                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8295                                          ssid ? ssid->ssid_len : 0);
8296
8297         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8298 }
8299
8300
8301 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8302                                           int ndef, int tag)
8303 {
8304         struct wpabuf *wsc, *p2p;
8305         struct wpa_ssid *ssid;
8306         u8 go_dev_addr[ETH_ALEN];
8307         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8308
8309         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8310                 return NULL;
8311
8312         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8313             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8314                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8315                 return NULL;
8316
8317         if (cli_freq == 0) {
8318                 wsc = wps_build_nfc_handover_sel_p2p(
8319                         wpa_s->parent->wps,
8320                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8321                         DEV_PW_NFC_CONNECTION_HANDOVER,
8322                         wpa_s->conf->wps_nfc_dh_pubkey,
8323                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8324         } else
8325                 wsc = NULL;
8326         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8327                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8328                                          ssid ? ssid->ssid_len : 0);
8329
8330         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8331 }
8332
8333
8334 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8335                                    struct p2p_nfc_params *params)
8336 {
8337         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8338                    "connection handover (freq=%d)",
8339                    params->go_freq);
8340
8341         if (params->go_freq && params->go_ssid_len) {
8342                 wpa_s->p2p_wps_method = WPS_NFC;
8343                 wpa_s->pending_join_wps_method = WPS_NFC;
8344                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8345                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8346                           ETH_ALEN);
8347                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8348                                            params->go_ssid,
8349                                            params->go_ssid_len);
8350         }
8351
8352         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8353                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8354                                 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8355                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8356                                 params->go_ssid_len ? params->go_ssid : NULL,
8357                                 params->go_ssid_len);
8358 }
8359
8360
8361 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8362                                   struct p2p_nfc_params *params, int tag)
8363 {
8364         int res, persistent;
8365         struct wpa_ssid *ssid;
8366
8367         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8368                    "connection handover");
8369         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8370                 ssid = wpa_s->current_ssid;
8371                 if (ssid == NULL)
8372                         continue;
8373                 if (ssid->mode != WPAS_MODE_P2P_GO)
8374                         continue;
8375                 if (wpa_s->ap_iface == NULL)
8376                         continue;
8377                 break;
8378         }
8379         if (wpa_s == NULL) {
8380                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8381                 return -1;
8382         }
8383
8384         if (wpa_s->p2pdev->p2p_oob_dev_pw_id !=
8385             DEV_PW_NFC_CONNECTION_HANDOVER &&
8386             !wpa_s->p2pdev->p2p_oob_dev_pw) {
8387                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8388                 return -1;
8389         }
8390         res = wpas_ap_wps_add_nfc_pw(
8391                 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id,
8392                 wpa_s->p2pdev->p2p_oob_dev_pw,
8393                 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ?
8394                 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL);
8395         if (res)
8396                 return res;
8397
8398         if (!tag) {
8399                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8400                 return 0;
8401         }
8402
8403         if (!params->peer ||
8404             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8405                 return 0;
8406
8407         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8408                    " to join", MAC2STR(params->peer->p2p_device_addr));
8409
8410         wpa_s->global->p2p_invite_group = wpa_s;
8411         persistent = ssid->p2p_persistent_group &&
8412                 wpas_p2p_get_persistent(wpa_s->p2pdev,
8413                                         params->peer->p2p_device_addr,
8414                                         ssid->ssid, ssid->ssid_len);
8415         wpa_s->p2pdev->pending_invite_ssid_id = -1;
8416
8417         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8418                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8419                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8420                           wpa_s->global->p2p_dev_addr, persistent, 0,
8421                           wpa_s->p2pdev->p2p_oob_dev_pw_id);
8422 }
8423
8424
8425 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8426                                     struct p2p_nfc_params *params,
8427                                     int forced_freq)
8428 {
8429         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8430                    "connection handover");
8431         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8432                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8433                                 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8434                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8435                                 NULL, 0);
8436 }
8437
8438
8439 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8440                                     struct p2p_nfc_params *params,
8441                                     int forced_freq)
8442 {
8443         int res;
8444
8445         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8446                    "connection handover");
8447         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8448                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8449                                forced_freq, wpa_s->p2p_go_vht_center_freq2,
8450                                -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8451                                NULL, 0);
8452         if (res)
8453                 return res;
8454
8455         res = wpas_p2p_listen(wpa_s, 60);
8456         if (res) {
8457                 p2p_unauthorize(wpa_s->global->p2p,
8458                                 params->peer->p2p_device_addr);
8459         }
8460
8461         return res;
8462 }
8463
8464
8465 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8466                                             const struct wpabuf *data,
8467                                             int sel, int tag, int forced_freq)
8468 {
8469         const u8 *pos, *end;
8470         u16 len, id;
8471         struct p2p_nfc_params params;
8472         int res;
8473
8474         os_memset(&params, 0, sizeof(params));
8475         params.sel = sel;
8476
8477         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8478
8479         pos = wpabuf_head(data);
8480         end = pos + wpabuf_len(data);
8481
8482         if (end - pos < 2) {
8483                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8484                            "attributes");
8485                 return -1;
8486         }
8487         len = WPA_GET_BE16(pos);
8488         pos += 2;
8489         if (len > end - pos) {
8490                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8491                            "attributes");
8492                 return -1;
8493         }
8494         params.wsc_attr = pos;
8495         params.wsc_len = len;
8496         pos += len;
8497
8498         if (end - pos < 2) {
8499                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8500                            "attributes");
8501                 return -1;
8502         }
8503         len = WPA_GET_BE16(pos);
8504         pos += 2;
8505         if (len > end - pos) {
8506                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8507                            "attributes");
8508                 return -1;
8509         }
8510         params.p2p_attr = pos;
8511         params.p2p_len = len;
8512         pos += len;
8513
8514         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8515                     params.wsc_attr, params.wsc_len);
8516         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8517                     params.p2p_attr, params.p2p_len);
8518         if (pos < end) {
8519                 wpa_hexdump(MSG_DEBUG,
8520                             "P2P: Ignored extra data after P2P attributes",
8521                             pos, end - pos);
8522         }
8523
8524         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8525         if (res)
8526                 return res;
8527
8528         if (params.next_step == NO_ACTION)
8529                 return 0;
8530
8531         if (params.next_step == BOTH_GO) {
8532                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8533                         MAC2STR(params.peer->p2p_device_addr));
8534                 return 0;
8535         }
8536
8537         if (params.next_step == PEER_CLIENT) {
8538                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8539                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8540                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8541                                 " ssid=\"%s\"",
8542                                 MAC2STR(params.peer->p2p_device_addr),
8543                                 params.go_freq,
8544                                 MAC2STR(params.go_dev_addr),
8545                                 wpa_ssid_txt(params.go_ssid,
8546                                              params.go_ssid_len));
8547                 } else {
8548                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8549                                 "peer=" MACSTR " freq=%d",
8550                                 MAC2STR(params.peer->p2p_device_addr),
8551                                 params.go_freq);
8552                 }
8553                 return 0;
8554         }
8555
8556         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8557                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8558                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8559                 return 0;
8560         }
8561
8562         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8563         wpa_s->p2p_oob_dev_pw = NULL;
8564
8565         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8566                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8567                            "received");
8568                 return -1;
8569         }
8570
8571         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8572         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8573         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8574                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8575         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8576                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8577         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8578
8579         if (tag) {
8580                 if (id < 0x10) {
8581                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8582                                    "peer OOB Device Password Id %u", id);
8583                         return -1;
8584                 }
8585                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8586                            "Device Password Id %u", id);
8587                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8588                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8589                                 params.oob_dev_pw_len -
8590                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
8591                 wpa_s->p2p_oob_dev_pw_id = id;
8592                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8593                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8594                         params.oob_dev_pw_len -
8595                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8596                 if (wpa_s->p2p_oob_dev_pw == NULL)
8597                         return -1;
8598
8599                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8600                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8601                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8602                         return -1;
8603         } else {
8604                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8605                            "without Device Password");
8606                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8607         }
8608
8609         switch (params.next_step) {
8610         case NO_ACTION:
8611         case BOTH_GO:
8612         case PEER_CLIENT:
8613                 /* already covered above */
8614                 return 0;
8615         case JOIN_GROUP:
8616                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8617         case AUTH_JOIN:
8618                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8619         case INIT_GO_NEG:
8620                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8621         case RESP_GO_NEG:
8622                 /* TODO: use own OOB Dev Pw */
8623                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8624         }
8625
8626         return -1;
8627 }
8628
8629
8630 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8631                              const struct wpabuf *data, int forced_freq)
8632 {
8633         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8634                 return -1;
8635
8636         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8637 }
8638
8639
8640 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8641                                  const struct wpabuf *req,
8642                                  const struct wpabuf *sel, int forced_freq)
8643 {
8644         struct wpabuf *tmp;
8645         int ret;
8646
8647         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8648                 return -1;
8649
8650         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8651
8652         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8653                           wpabuf_head(req), wpabuf_len(req));
8654         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8655                           wpabuf_head(sel), wpabuf_len(sel));
8656         if (forced_freq)
8657                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8658         tmp = ndef_parse_p2p(init ? sel : req);
8659         if (tmp == NULL) {
8660                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8661                 return -1;
8662         }
8663
8664         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8665                                                forced_freq);
8666         wpabuf_free(tmp);
8667
8668         return ret;
8669 }
8670
8671
8672 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8673 {
8674         const u8 *if_addr;
8675         int go_intent = wpa_s->conf->p2p_go_intent;
8676         struct wpa_supplicant *iface;
8677
8678         if (wpa_s->global->p2p == NULL)
8679                 return -1;
8680
8681         if (!enabled) {
8682                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8683                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8684                 {
8685                         if (!iface->ap_iface)
8686                                 continue;
8687                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8688                 }
8689                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8690                                                  0, NULL);
8691                 if (wpa_s->p2p_nfc_tag_enabled)
8692                         wpas_p2p_remove_pending_group_interface(wpa_s);
8693                 wpa_s->p2p_nfc_tag_enabled = 0;
8694                 return 0;
8695         }
8696
8697         if (wpa_s->global->p2p_disabled)
8698                 return -1;
8699
8700         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8701             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8702             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8703             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8704                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8705                            "to allow static handover cases");
8706                 return -1;
8707         }
8708
8709         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8710
8711         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8712         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8713         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8714         if (wpa_s->p2p_oob_dev_pw == NULL)
8715                 return -1;
8716         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8717
8718         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8719             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8720                 /*
8721                  * P2P Group Interface present and the command came on group
8722                  * interface, so enable the token for the current interface.
8723                  */
8724                 wpa_s->create_p2p_iface = 0;
8725         } else {
8726                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8727         }
8728
8729         if (wpa_s->create_p2p_iface) {
8730                 enum wpa_driver_if_type iftype;
8731                 /* Prepare to add a new interface for the group */
8732                 iftype = WPA_IF_P2P_GROUP;
8733                 if (go_intent == 15)
8734                         iftype = WPA_IF_P2P_GO;
8735                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8736                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8737                                    "interface for the group");
8738                         return -1;
8739                 }
8740
8741                 if_addr = wpa_s->pending_interface_addr;
8742         } else if (wpa_s->p2p_mgmt)
8743                 if_addr = wpa_s->parent->own_addr;
8744         else
8745                 if_addr = wpa_s->own_addr;
8746
8747         wpa_s->p2p_nfc_tag_enabled = enabled;
8748
8749         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8750                 struct hostapd_data *hapd;
8751                 if (iface->ap_iface == NULL)
8752                         continue;
8753                 hapd = iface->ap_iface->bss[0];
8754                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8755                 hapd->conf->wps_nfc_dh_pubkey =
8756                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8757                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8758                 hapd->conf->wps_nfc_dh_privkey =
8759                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8760                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8761                 hapd->conf->wps_nfc_dev_pw =
8762                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8763                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8764
8765                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8766                         wpa_dbg(iface, MSG_DEBUG,
8767                                 "P2P: Failed to enable NFC Tag for GO");
8768                 }
8769         }
8770         p2p_set_authorized_oob_dev_pw_id(
8771                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8772                 if_addr);
8773
8774         return 0;
8775 }
8776
8777 #endif /* CONFIG_WPS_NFC */
8778
8779
8780 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8781                                              struct wpa_used_freq_data *freqs,
8782                                              unsigned int num)
8783 {
8784         u8 curr_chan, cand, chan;
8785         unsigned int i;
8786
8787         /*
8788          * If possible, optimize the Listen channel to be a channel that is
8789          * already used by one of the other interfaces.
8790          */
8791         if (!wpa_s->conf->p2p_optimize_listen_chan)
8792                 return;
8793
8794         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8795                 return;
8796
8797         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8798         for (i = 0, cand = 0; i < num; i++) {
8799                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8800                 if (curr_chan == chan) {
8801                         cand = 0;
8802                         break;
8803                 }
8804
8805                 if (chan == 1 || chan == 6 || chan == 11)
8806                         cand = chan;
8807         }
8808
8809         if (cand) {
8810                 wpa_dbg(wpa_s, MSG_DEBUG,
8811                         "P2P: Update Listen channel to %u based on operating channel",
8812                         cand);
8813                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8814         }
8815 }
8816
8817
8818 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8819 {
8820         struct hostapd_config *conf;
8821         struct p2p_go_neg_results params;
8822         struct csa_settings csa_settings;
8823         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8824         int old_freq = current_ssid->frequency;
8825         int ret;
8826
8827         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8828                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8829                 return -1;
8830         }
8831
8832         /*
8833          * TODO: This function may not always work correctly. For example,
8834          * when we have a running GO and a BSS on a DFS channel.
8835          */
8836         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8837                 wpa_dbg(wpa_s, MSG_DEBUG,
8838                         "P2P CSA: Failed to select new frequency for GO");
8839                 return -1;
8840         }
8841
8842         if (current_ssid->frequency == params.freq) {
8843                 wpa_dbg(wpa_s, MSG_DEBUG,
8844                         "P2P CSA: Selected same frequency - not moving GO");
8845                 return 0;
8846         }
8847
8848         conf = hostapd_config_defaults();
8849         if (!conf) {
8850                 wpa_dbg(wpa_s, MSG_DEBUG,
8851                         "P2P CSA: Failed to allocate default config");
8852                 return -1;
8853         }
8854
8855         current_ssid->frequency = params.freq;
8856         if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
8857                 wpa_dbg(wpa_s, MSG_DEBUG,
8858                         "P2P CSA: Failed to create new GO config");
8859                 ret = -1;
8860                 goto out;
8861         }
8862
8863         if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
8864                 wpa_dbg(wpa_s, MSG_DEBUG,
8865                         "P2P CSA: CSA to a different band is not supported");
8866                 ret = -1;
8867                 goto out;
8868         }
8869
8870         os_memset(&csa_settings, 0, sizeof(csa_settings));
8871         csa_settings.cs_count = P2P_GO_CSA_COUNT;
8872         csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
8873         csa_settings.freq_params.freq = params.freq;
8874         csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
8875         csa_settings.freq_params.ht_enabled = conf->ieee80211n;
8876         csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
8877
8878         if (conf->ieee80211ac) {
8879                 int freq1 = 0, freq2 = 0;
8880                 u8 chan, opclass;
8881
8882                 if (ieee80211_freq_to_channel_ext(params.freq,
8883                                                   conf->secondary_channel,
8884                                                   conf->vht_oper_chwidth,
8885                                                   &opclass, &chan) ==
8886                     NUM_HOSTAPD_MODES) {
8887                         wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
8888                         ret = -1;
8889                         goto out;
8890                 }
8891
8892                 if (conf->vht_oper_centr_freq_seg0_idx)
8893                         freq1 = ieee80211_chan_to_freq(
8894                                 NULL, opclass,
8895                                 conf->vht_oper_centr_freq_seg0_idx);
8896
8897                 if (conf->vht_oper_centr_freq_seg1_idx)
8898                         freq2 = ieee80211_chan_to_freq(
8899                                 NULL, opclass,
8900                                 conf->vht_oper_centr_freq_seg1_idx);
8901
8902                 if (freq1 < 0 || freq2 < 0) {
8903                         wpa_dbg(wpa_s, MSG_DEBUG,
8904                                 "P2P CSA: Selected invalid VHT center freqs");
8905                         ret = -1;
8906                         goto out;
8907                 }
8908
8909                 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
8910                 csa_settings.freq_params.center_freq1 = freq1;
8911                 csa_settings.freq_params.center_freq2 = freq2;
8912
8913                 switch (conf->vht_oper_chwidth) {
8914                 case VHT_CHANWIDTH_80MHZ:
8915                 case VHT_CHANWIDTH_80P80MHZ:
8916                         csa_settings.freq_params.bandwidth = 80;
8917                         break;
8918                 case VHT_CHANWIDTH_160MHZ:
8919                         csa_settings.freq_params.bandwidth = 160;
8920                         break;
8921                 }
8922         }
8923
8924         ret = ap_switch_channel(wpa_s, &csa_settings);
8925 out:
8926         current_ssid->frequency = old_freq;
8927         hostapd_config_free(conf);
8928         return ret;
8929 }
8930
8931
8932 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8933 {
8934         struct p2p_go_neg_results params;
8935         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8936
8937         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8938
8939         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8940                 current_ssid->frequency);
8941
8942         /* Stop the AP functionality */
8943         /* TODO: Should do this in a way that does not indicated to possible
8944          * P2P Clients in the group that the group is terminated. */
8945         wpa_supplicant_ap_deinit(wpa_s);
8946
8947         /* Reselect the GO frequency */
8948         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8949                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8950                 wpas_p2p_group_delete(wpa_s,
8951                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8952                 return;
8953         }
8954         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8955                 params.freq);
8956
8957         if (params.freq &&
8958             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8959                 wpa_printf(MSG_DEBUG,
8960                            "P2P: Selected freq (%u MHz) is not valid for P2P",
8961                            params.freq);
8962                 wpas_p2p_group_delete(wpa_s,
8963                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8964                 return;
8965         }
8966
8967         /* Update the frequency */
8968         current_ssid->frequency = params.freq;
8969         wpa_s->connect_without_scan = current_ssid;
8970         wpa_s->reassociate = 1;
8971         wpa_s->disconnected = 0;
8972         wpa_supplicant_req_scan(wpa_s, 0, 0);
8973 }
8974
8975
8976 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8977 {
8978         struct wpa_supplicant *wpa_s = eloop_ctx;
8979
8980         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8981                 return;
8982
8983         wpas_p2p_go_update_common_freqs(wpa_s);
8984
8985         /* Do not move GO in the middle of a CSA */
8986         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8987                 wpa_printf(MSG_DEBUG,
8988                            "P2P: CSA is in progress - not moving GO");
8989                 return;
8990         }
8991
8992         /*
8993          * First, try a channel switch flow. If it is not supported or fails,
8994          * take down the GO and bring it up again.
8995          */
8996         if (wpas_p2p_move_go_csa(wpa_s) < 0)
8997                 wpas_p2p_move_go_no_csa(wpa_s);
8998 }
8999
9000
9001 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
9002 {
9003         struct wpa_supplicant *wpa_s = eloop_ctx;
9004         struct wpa_used_freq_data *freqs = NULL;
9005         unsigned int num = wpa_s->num_multichan_concurrent;
9006
9007         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
9008         if (!freqs)
9009                 return;
9010
9011         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
9012
9013         /* Previous attempt to move a GO was not possible -- try again. */
9014         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
9015                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
9016
9017         os_free(freqs);
9018 }
9019
9020
9021 /*
9022  * Consider moving a GO from its currently used frequency:
9023  * 1. It is possible that due to regulatory consideration the frequency
9024  *    can no longer be used and there is a need to evacuate the GO.
9025  * 2. It is possible that due to MCC considerations, it would be preferable
9026  *    to move the GO to a channel that is currently used by some other
9027  *    station interface.
9028  *
9029  * In case a frequency that became invalid is once again valid, cancel a
9030  * previously initiated GO frequency change.
9031  */
9032 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
9033                                             struct wpa_used_freq_data *freqs,
9034                                             unsigned int num)
9035 {
9036         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
9037         unsigned int timeout;
9038         int freq;
9039
9040         wpas_p2p_go_update_common_freqs(wpa_s);
9041
9042         freq = wpa_s->current_ssid->frequency;
9043         for (i = 0, invalid_freq = 0; i < num; i++) {
9044                 if (freqs[i].freq == freq) {
9045                         flags = freqs[i].flags;
9046
9047                         /* The channel is invalid, must change it */
9048                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
9049                                 wpa_dbg(wpa_s, MSG_DEBUG,
9050                                         "P2P: Freq=%d MHz no longer valid for GO",
9051                                         freq);
9052                                 invalid_freq = 1;
9053                         }
9054                 } else if (freqs[i].flags == 0) {
9055                         /* Freq is not used by any other station interface */
9056                         continue;
9057                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
9058                                                freqs[i].freq)) {
9059                         /* Freq is not valid for P2P use cases */
9060                         continue;
9061                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9062                            P2P_GO_FREQ_MOVE_SCM) {
9063                         policy_move = 1;
9064                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9065                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
9066                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9067                         policy_move = 1;
9068                 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
9069                             P2P_GO_FREQ_MOVE_SCM_ECSA) &&
9070                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9071                         if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
9072                                 policy_move = 1;
9073                         } else if ((wpa_s->drv_flags &
9074                                     WPA_DRIVER_FLAGS_AP_CSA) &&
9075                                    wpas_p2p_go_clients_support_ecsa(wpa_s)) {
9076                                 u8 chan;
9077
9078                                 /*
9079                                  * We do not support CSA between bands, so move
9080                                  * GO only within the same band.
9081                                  */
9082                                 if (wpa_s->ap_iface->current_mode->mode ==
9083                                     ieee80211_freq_to_chan(freqs[i].freq,
9084                                                            &chan))
9085                                         policy_move = 1;
9086                         }
9087                 }
9088         }
9089
9090         wpa_dbg(wpa_s, MSG_DEBUG,
9091                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9092                 invalid_freq, policy_move, flags);
9093
9094         /*
9095          * The channel is valid, or we are going to have a policy move, so
9096          * cancel timeout.
9097          */
9098         if (!invalid_freq || policy_move) {
9099                 wpa_dbg(wpa_s, MSG_DEBUG,
9100                         "P2P: Cancel a GO move from freq=%d MHz", freq);
9101                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9102
9103                 if (wpas_p2p_in_progress(wpa_s)) {
9104                         wpa_dbg(wpa_s, MSG_DEBUG,
9105                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9106                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9107                                              wpa_s, NULL);
9108                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9109                                                wpas_p2p_reconsider_moving_go,
9110                                                wpa_s, NULL);
9111                         return;
9112                 }
9113         }
9114
9115         if (!invalid_freq && (!policy_move || flags != 0)) {
9116                 wpa_dbg(wpa_s, MSG_DEBUG,
9117                         "P2P: Not initiating a GO frequency change");
9118                 return;
9119         }
9120
9121         /*
9122          * Do not consider moving GO if it is in the middle of a CSA. When the
9123          * CSA is finished this flow should be retriggered.
9124          */
9125         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9126                 wpa_dbg(wpa_s, MSG_DEBUG,
9127                         "P2P: Not initiating a GO frequency change - CSA is in progress");
9128                 return;
9129         }
9130
9131         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9132                 timeout = P2P_GO_FREQ_CHANGE_TIME;
9133         else
9134                 timeout = 0;
9135
9136         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9137                 freq, timeout);
9138         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9139         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9140 }
9141
9142
9143 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9144                                          struct wpa_used_freq_data *freqs,
9145                                          unsigned int num,
9146                                          enum wpas_p2p_channel_update_trig trig)
9147 {
9148         struct wpa_supplicant *ifs;
9149
9150         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9151                              NULL);
9152
9153         /*
9154          * Travers all the radio interfaces, and for each GO interface, check
9155          * if there is a need to move the GO from the frequency it is using,
9156          * or in case the frequency is valid again, cancel the evacuation flow.
9157          */
9158         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9159                          radio_list) {
9160                 if (ifs->current_ssid == NULL ||
9161                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9162                         continue;
9163
9164                 /*
9165                  * The GO was just started or completed channel switch, no need
9166                  * to move it.
9167                  */
9168                 if (wpa_s == ifs &&
9169                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9170                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9171                         wpa_dbg(wpa_s, MSG_DEBUG,
9172                                 "P2P: GO move - schedule re-consideration");
9173                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9174                                                wpas_p2p_reconsider_moving_go,
9175                                                wpa_s, NULL);
9176                         continue;
9177                 }
9178
9179                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9180         }
9181 }
9182
9183
9184 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9185 {
9186         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9187                 return;
9188
9189         wpas_p2p_update_channel_list(wpa_s,
9190                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9191 }
9192
9193
9194 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9195 {
9196         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9197                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9198                         "the management interface is being removed");
9199                 wpas_p2p_deinit_global(wpa_s->global);
9200         }
9201 }
9202
9203
9204 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9205 {
9206         if (wpa_s->ap_iface->bss)
9207                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9208         wpas_p2p_group_deinit(wpa_s);
9209 }