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  52  * it is currently using, but is no longer valid for P2P use cases.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  57  * Defines CSA parameters which are used when GO evacuates the no longer valid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
1305         /*
1306          * This callback is likely called for the main interface. Update wpa_s
1307          * to use the group interface if a new interface was created for the
1308          * group.
1309          */
1310         if (wpa_s->global->p2p_group_formation)
1311                 wpa_s = wpa_s->global->p2p_group_formation;
1312         if (wpa_s->p2p_go_group_formation_completed) {
1313                 wpa_s->global->p2p_group_formation = NULL;
1314                 wpa_s->p2p_in_provisioning = 0;
1315         }
1316         wpa_s->p2p_in_invitation = 0;
1317         wpa_s->group_formation_reported = 1;
1318
1319         if (!success) {
1320                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1321                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1322                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1323                 if (already_deleted)
1324                         return;
1325                 wpas_p2p_group_delete(wpa_s,
1326                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1327                 return;
1328         }
1329
1330         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1331                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1332
1333         ssid = wpa_s->current_ssid;
1334         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1335                 ssid->mode = WPAS_MODE_P2P_GO;
1336                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1337                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1338         }
1339
1340         persistent = 0;
1341         if (ssid) {
1342                 client = ssid->mode == WPAS_MODE_INFRA;
1343                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1344                         persistent = ssid->p2p_persistent_group;
1345                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1346                                   ETH_ALEN);
1347                 } else
1348                         persistent = wpas_p2p_persistent_group(wpa_s,
1349                                                                go_dev_addr,
1350                                                                ssid->ssid,
1351                                                                ssid->ssid_len);
1352         } else {
1353                 client = wpa_s->p2p_group_interface ==
1354                         P2P_GROUP_INTERFACE_CLIENT;
1355                 os_memset(go_dev_addr, 0, ETH_ALEN);
1356         }
1357
1358         wpa_s->show_group_started = 0;
1359         if (client) {
1360                 /*
1361                  * Indicate event only after successfully completed 4-way
1362                  * handshake, i.e., when the interface is ready for data
1363                  * packets.
1364                  */
1365                 wpa_s->show_group_started = 1;
1366         } else {
1367                 wpas_p2p_group_started(wpa_s, 1, ssid,
1368                                        ssid ? ssid->frequency : 0,
1369                                        ssid && ssid->passphrase == NULL &&
1370                                        ssid->psk_set ? ssid->psk : NULL,
1371                                        ssid ? ssid->passphrase : NULL,
1372                                        go_dev_addr, persistent, "");
1373                 wpas_p2p_cross_connect_setup(wpa_s);
1374                 wpas_p2p_set_group_idle_timeout(wpa_s);
1375         }
1376
1377         if (persistent)
1378                 wpas_p2p_store_persistent_group(wpa_s->p2pdev,
1379                                                 ssid, go_dev_addr);
1380         else {
1381                 os_free(wpa_s->global->add_psk);
1382                 wpa_s->global->add_psk = NULL;
1383         }
1384
1385         if (!client) {
1386                 wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 0);
1387                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1388         }
1389 }
1390
1391
1392 struct send_action_work {
1393         unsigned int freq;
1394         u8 dst[ETH_ALEN];
1395         u8 src[ETH_ALEN];
1396         u8 bssid[ETH_ALEN];
1397         size_t len;
1398         unsigned int wait_time;
1399         u8 buf[0];
1400 };
1401
1402
1403 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s)
1404 {
1405         struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx;
1406
1407         wpa_printf(MSG_DEBUG,
1408                    "P2P: Free Action frame radio work @%p (freq=%u dst="
1409                    MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)",
1410                    wpa_s->p2p_send_action_work, awork->freq,
1411                    MAC2STR(awork->dst), MAC2STR(awork->src),
1412                    MAC2STR(awork->bssid), awork->wait_time);
1413         wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame",
1414                     awork->buf, awork->len);
1415         os_free(awork);
1416         wpa_s->p2p_send_action_work->ctx = NULL;
1417         radio_work_done(wpa_s->p2p_send_action_work);
1418         wpa_s->p2p_send_action_work = NULL;
1419 }
1420
1421
1422 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1423                                               void *timeout_ctx)
1424 {
1425         struct wpa_supplicant *wpa_s = eloop_ctx;
1426
1427         if (!wpa_s->p2p_send_action_work)
1428                 return;
1429
1430         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1431         wpas_p2p_free_send_action_work(wpa_s);
1432 }
1433
1434
1435 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1436 {
1437         if (wpa_s->p2p_send_action_work) {
1438                 struct send_action_work *awork;
1439
1440                 awork = wpa_s->p2p_send_action_work->ctx;
1441                 wpa_printf(MSG_DEBUG,
1442                            "P2P: Clear Action TX work @%p (wait_time=%u)",
1443                            wpa_s->p2p_send_action_work, awork->wait_time);
1444                 if (awork->wait_time == 0) {
1445                         wpas_p2p_free_send_action_work(wpa_s);
1446                 } else {
1447                         /*
1448                          * In theory, this should not be needed, but number of
1449                          * places in the P2P code is still using non-zero wait
1450                          * time for the last Action frame in the sequence and
1451                          * some of these do not call send_action_done().
1452                          */
1453                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1454                                              wpa_s, NULL);
1455                         eloop_register_timeout(
1456                                 0, awork->wait_time * 1000,
1457                                 wpas_p2p_send_action_work_timeout,
1458                                 wpa_s, NULL);
1459                 }
1460         }
1461 }
1462
1463
1464 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1465                                            unsigned int freq,
1466                                            const u8 *dst, const u8 *src,
1467                                            const u8 *bssid,
1468                                            const u8 *data, size_t data_len,
1469                                            enum offchannel_send_action_result
1470                                            result)
1471 {
1472         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1473
1474         wpas_p2p_action_tx_clear(wpa_s);
1475
1476         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1477                 return;
1478
1479         switch (result) {
1480         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1481                 res = P2P_SEND_ACTION_SUCCESS;
1482                 break;
1483         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1484                 res = P2P_SEND_ACTION_NO_ACK;
1485                 break;
1486         case OFFCHANNEL_SEND_ACTION_FAILED:
1487                 res = P2P_SEND_ACTION_FAILED;
1488                 break;
1489         }
1490
1491         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1492
1493         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1494             wpa_s->pending_pd_before_join &&
1495             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1496              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1497             wpa_s->p2p_fallback_to_go_neg) {
1498                 wpa_s->pending_pd_before_join = 0;
1499                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1500                         "during p2p_connect-auto");
1501                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1502                                P2P_EVENT_FALLBACK_TO_GO_NEG
1503                                "reason=no-ACK-to-PD-Req");
1504                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1505                 return;
1506         }
1507 }
1508
1509
1510 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1511 {
1512         struct wpa_supplicant *wpa_s = work->wpa_s;
1513         struct send_action_work *awork = work->ctx;
1514
1515         if (deinit) {
1516                 if (work->started) {
1517                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1518                                              wpa_s, NULL);
1519                         wpa_s->p2p_send_action_work = NULL;
1520                         offchannel_send_action_done(wpa_s);
1521                 }
1522                 os_free(awork);
1523                 return;
1524         }
1525
1526         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1527                                    awork->bssid, awork->buf, awork->len,
1528                                    awork->wait_time,
1529                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1530                 os_free(awork);
1531                 radio_work_done(work);
1532                 return;
1533         }
1534         wpa_s->p2p_send_action_work = work;
1535 }
1536
1537
1538 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1539                                  unsigned int freq, const u8 *dst,
1540                                  const u8 *src, const u8 *bssid, const u8 *buf,
1541                                  size_t len, unsigned int wait_time)
1542 {
1543         struct send_action_work *awork;
1544
1545         if (wpa_s->p2p_send_action_work) {
1546                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1547                 return -1;
1548         }
1549
1550         awork = os_zalloc(sizeof(*awork) + len);
1551         if (awork == NULL)
1552                 return -1;
1553
1554         awork->freq = freq;
1555         os_memcpy(awork->dst, dst, ETH_ALEN);
1556         os_memcpy(awork->src, src, ETH_ALEN);
1557         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1558         awork->len = len;
1559         awork->wait_time = wait_time;
1560         os_memcpy(awork->buf, buf, len);
1561
1562         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1563                            wpas_send_action_cb, awork) < 0) {
1564                 os_free(awork);
1565                 return -1;
1566         }
1567
1568         return 0;
1569 }
1570
1571
1572 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1573                             const u8 *src, const u8 *bssid, const u8 *buf,
1574                             size_t len, unsigned int wait_time)
1575 {
1576         struct wpa_supplicant *wpa_s = ctx;
1577         int listen_freq = -1, send_freq = -1;
1578
1579         if (wpa_s->p2p_listen_work)
1580                 listen_freq = wpa_s->p2p_listen_work->freq;
1581         if (wpa_s->p2p_send_action_work)
1582                 send_freq = wpa_s->p2p_send_action_work->freq;
1583         if (listen_freq != (int) freq && send_freq != (int) freq) {
1584                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1585                            listen_freq, send_freq);
1586                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1587                                              len, wait_time);
1588         }
1589
1590         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1591         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1592                                       wait_time,
1593                                       wpas_p2p_send_action_tx_status, 1);
1594 }
1595
1596
1597 static void wpas_send_action_done(void *ctx)
1598 {
1599         struct wpa_supplicant *wpa_s = ctx;
1600
1601         if (wpa_s->p2p_send_action_work) {
1602                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1603                                      wpa_s, NULL);
1604                 os_free(wpa_s->p2p_send_action_work->ctx);
1605                 radio_work_done(wpa_s->p2p_send_action_work);
1606                 wpa_s->p2p_send_action_work = NULL;
1607         }
1608
1609         offchannel_send_action_done(wpa_s);
1610 }
1611
1612
1613 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1614                                     struct p2p_go_neg_results *params)
1615 {
1616         if (wpa_s->go_params == NULL) {
1617                 wpa_s->go_params = os_malloc(sizeof(*params));
1618                 if (wpa_s->go_params == NULL)
1619                         return -1;
1620         }
1621         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1622         return 0;
1623 }
1624
1625
1626 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1627                                     struct p2p_go_neg_results *res)
1628 {
1629         wpa_s->group_formation_reported = 0;
1630         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1631                    " dev_addr " MACSTR " wps_method %d",
1632                    MAC2STR(res->peer_interface_addr),
1633                    MAC2STR(res->peer_device_addr), res->wps_method);
1634         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1635                           res->ssid, res->ssid_len);
1636         wpa_supplicant_ap_deinit(wpa_s);
1637         wpas_copy_go_neg_results(wpa_s, res);
1638         if (res->wps_method == WPS_PBC) {
1639                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1640 #ifdef CONFIG_WPS_NFC
1641         } else if (res->wps_method == WPS_NFC) {
1642                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1643                                    res->peer_interface_addr,
1644                                    wpa_s->p2pdev->p2p_oob_dev_pw,
1645                                    wpa_s->p2pdev->p2p_oob_dev_pw_id, 1,
1646                                    wpa_s->p2pdev->p2p_oob_dev_pw_id ==
1647                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1648                                    wpa_s->p2pdev->p2p_peer_oob_pubkey_hash :
1649                                    NULL,
1650                                    NULL, 0, 0);
1651 #endif /* CONFIG_WPS_NFC */
1652         } else {
1653                 u16 dev_pw_id = DEV_PW_DEFAULT;
1654                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1655                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1656                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1657                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1658                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1659                                    wpa_s->p2p_pin, 1, dev_pw_id);
1660         }
1661 }
1662
1663
1664 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1665                                   struct wpa_ssid *ssid)
1666 {
1667         struct wpa_ssid *persistent;
1668         struct psk_list_entry *psk;
1669         struct hostapd_data *hapd;
1670
1671         if (!wpa_s->ap_iface)
1672                 return;
1673
1674         persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
1675                                              ssid->ssid_len);
1676         if (persistent == NULL)
1677                 return;
1678
1679         hapd = wpa_s->ap_iface->bss[0];
1680
1681         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1682                          list) {
1683                 struct hostapd_wpa_psk *hpsk;
1684
1685                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1686                         MACSTR " psk=%d",
1687                         MAC2STR(psk->addr), psk->p2p);
1688                 hpsk = os_zalloc(sizeof(*hpsk));
1689                 if (hpsk == NULL)
1690                         break;
1691                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1692                 if (psk->p2p)
1693                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1694                 else
1695                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1696                 hpsk->next = hapd->conf->ssid.wpa_psk;
1697                 hapd->conf->ssid.wpa_psk = hpsk;
1698         }
1699 }
1700
1701
1702 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1703 {
1704         unsigned int i;
1705
1706         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1707                 wpa_s->p2p_group_common_freqs_num);
1708
1709         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1710                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1711                         i, wpa_s->p2p_group_common_freqs[i]);
1712 }
1713
1714
1715 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1716                                            struct p2p_go_neg_results *params)
1717 {
1718         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1719
1720         wpa_s->p2p_group_common_freqs_num = 0;
1721         os_free(wpa_s->p2p_group_common_freqs);
1722         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1723         if (!wpa_s->p2p_group_common_freqs)
1724                 return;
1725
1726         for (i = 0; i < len; i++) {
1727                 if (!wpa_s->go_params->freq_list[i])
1728                         break;
1729                 wpa_s->p2p_group_common_freqs[i] =
1730                         wpa_s->go_params->freq_list[i];
1731         }
1732         wpa_s->p2p_group_common_freqs_num = i;
1733 }
1734
1735
1736 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1737 {
1738 #ifndef CONFIG_NO_CONFIG_WRITE
1739         if (wpa_s->p2pdev->conf->update_config &&
1740             wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
1741                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1742 #endif /* CONFIG_NO_CONFIG_WRITE */
1743 }
1744
1745
1746 static void p2p_go_configured(void *ctx, void *data)
1747 {
1748         struct wpa_supplicant *wpa_s = ctx;
1749         struct p2p_go_neg_results *params = data;
1750         struct wpa_ssid *ssid;
1751
1752         wpa_s->ap_configured_cb = NULL;
1753         wpa_s->ap_configured_cb_ctx = NULL;
1754         wpa_s->ap_configured_cb_data = NULL;
1755         if (!wpa_s->go_params) {
1756                 wpa_printf(MSG_ERROR,
1757                            "P2P: p2p_go_configured() called with wpa_s->go_params == NULL");
1758                 return;
1759         }
1760
1761         p2p_go_save_group_common_freqs(wpa_s, params);
1762         p2p_go_dump_common_freqs(wpa_s);
1763
1764         ssid = wpa_s->current_ssid;
1765         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1766                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1767                 if (wpa_s->global->p2p_group_formation == wpa_s)
1768                         wpa_s->global->p2p_group_formation = NULL;
1769                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1770                                        params->passphrase[0] == '\0' ?
1771                                        params->psk : NULL,
1772                                        params->passphrase,
1773                                        wpa_s->global->p2p_dev_addr,
1774                                        params->persistent_group, "");
1775                 wpa_s->group_formation_reported = 1;
1776
1777                 if (wpa_s->p2pdev->p2ps_method_config_any) {
1778                         if (is_zero_ether_addr(wpa_s->p2pdev->p2ps_join_addr)) {
1779                                 wpa_dbg(wpa_s, MSG_DEBUG,
1780                                         "P2PS: Setting default PIN for ANY");
1781                                 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1782                                                           "12345670", NULL, 0,
1783                                                           0);
1784                         } else {
1785                                 wpa_dbg(wpa_s, MSG_DEBUG,
1786                                         "P2PS: Setting default PIN for " MACSTR,
1787                                         MAC2STR(wpa_s->p2pdev->p2ps_join_addr));
1788                                 wpa_supplicant_ap_wps_pin(
1789                                         wpa_s, wpa_s->p2pdev->p2ps_join_addr,
1790                                         "12345670", NULL, 0, 0);
1791                         }
1792                         wpa_s->p2pdev->p2ps_method_config_any = 0;
1793                 }
1794
1795                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1796                 if (params->persistent_group) {
1797                         wpas_p2p_store_persistent_group(
1798                                 wpa_s->p2pdev, ssid,
1799                                 wpa_s->global->p2p_dev_addr);
1800                         wpas_p2p_add_psk_list(wpa_s, ssid);
1801                 }
1802
1803                 wpas_notify_p2p_group_started(wpa_s, ssid,
1804                                               params->persistent_group, 0);
1805                 wpas_p2p_cross_connect_setup(wpa_s);
1806                 wpas_p2p_set_group_idle_timeout(wpa_s);
1807
1808                 if (wpa_s->p2p_first_connection_timeout) {
1809                         wpa_dbg(wpa_s, MSG_DEBUG,
1810                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1811                                 wpa_s->p2p_first_connection_timeout);
1812                         wpa_s->p2p_go_group_formation_completed = 0;
1813                         wpa_s->global->p2p_group_formation = wpa_s;
1814                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1815                                              wpa_s->p2pdev, NULL);
1816                         eloop_register_timeout(
1817                                 wpa_s->p2p_first_connection_timeout, 0,
1818                                 wpas_p2p_group_formation_timeout,
1819                                 wpa_s->p2pdev, NULL);
1820                 }
1821
1822                 return;
1823         }
1824
1825         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1826         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1827                                               params->peer_interface_addr)) {
1828                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1829                            "filtering");
1830                 return;
1831         }
1832         if (params->wps_method == WPS_PBC) {
1833                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1834                                           params->peer_device_addr);
1835 #ifdef CONFIG_WPS_NFC
1836         } else if (params->wps_method == WPS_NFC) {
1837                 if (wpa_s->p2pdev->p2p_oob_dev_pw_id !=
1838                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1839                     !wpa_s->p2pdev->p2p_oob_dev_pw) {
1840                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1841                         return;
1842                 }
1843                 wpas_ap_wps_add_nfc_pw(
1844                         wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id,
1845                         wpa_s->p2pdev->p2p_oob_dev_pw,
1846                         wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ?
1847                         wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL);
1848 #endif /* CONFIG_WPS_NFC */
1849         } else if (wpa_s->p2p_pin[0])
1850                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1851                                           wpa_s->p2p_pin, NULL, 0, 0);
1852         os_free(wpa_s->go_params);
1853         wpa_s->go_params = NULL;
1854 }
1855
1856
1857 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1858                               struct p2p_go_neg_results *params,
1859                               int group_formation)
1860 {
1861         struct wpa_ssid *ssid;
1862
1863         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1864         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1865                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1866                         "results");
1867                 return;
1868         }
1869
1870         ssid = wpa_config_add_network(wpa_s->conf);
1871         if (ssid == NULL) {
1872                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1873                 return;
1874         }
1875
1876         wpa_s->show_group_started = 0;
1877         wpa_s->p2p_go_group_formation_completed = 0;
1878         wpa_s->group_formation_reported = 0;
1879         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1880
1881         wpa_config_set_network_defaults(ssid);
1882         ssid->temporary = 1;
1883         ssid->p2p_group = 1;
1884         ssid->p2p_persistent_group = params->persistent_group;
1885         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1886                 WPAS_MODE_P2P_GO;
1887         ssid->frequency = params->freq;
1888         ssid->ht40 = params->ht40;
1889         ssid->vht = params->vht;
1890         ssid->max_oper_chwidth = params->max_oper_chwidth;
1891         ssid->vht_center_freq2 = params->vht_center_freq2;
1892         ssid->ssid = os_zalloc(params->ssid_len + 1);
1893         if (ssid->ssid) {
1894                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1895                 ssid->ssid_len = params->ssid_len;
1896         }
1897         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1898         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1899         ssid->proto = WPA_PROTO_RSN;
1900         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1901         ssid->group_cipher = WPA_CIPHER_CCMP;
1902         if (params->freq > 56160) {
1903                 /*
1904                  * Enable GCMP instead of CCMP as pairwise_cipher and
1905                  * group_cipher in 60 GHz.
1906                  */
1907                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1908                 ssid->group_cipher = WPA_CIPHER_GCMP;
1909                 /* P2P GO in 60 GHz is always a PCP (PBSS) */
1910                 ssid->pbss = 1;
1911         }
1912         if (os_strlen(params->passphrase) > 0) {
1913                 ssid->passphrase = os_strdup(params->passphrase);
1914                 if (ssid->passphrase == NULL) {
1915                         wpa_msg_global(wpa_s, MSG_ERROR,
1916                                        "P2P: Failed to copy passphrase for GO");
1917                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1918                         return;
1919                 }
1920         } else
1921                 ssid->passphrase = NULL;
1922         ssid->psk_set = params->psk_set;
1923         if (ssid->psk_set)
1924                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1925         else if (ssid->passphrase)
1926                 wpa_config_update_psk(ssid);
1927         ssid->ap_max_inactivity = wpa_s->p2pdev->conf->p2p_go_max_inactivity;
1928
1929         wpa_s->ap_configured_cb = p2p_go_configured;
1930         wpa_s->ap_configured_cb_ctx = wpa_s;
1931         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1932         wpa_s->scan_req = NORMAL_SCAN_REQ;
1933         wpa_s->connect_without_scan = ssid;
1934         wpa_s->reassociate = 1;
1935         wpa_s->disconnected = 0;
1936         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1937                 "start GO)");
1938         wpa_supplicant_req_scan(wpa_s, 0, 0);
1939 }
1940
1941
1942 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1943                                   const struct wpa_supplicant *src)
1944 {
1945         struct wpa_config *d;
1946         const struct wpa_config *s;
1947
1948         d = dst->conf;
1949         s = src->conf;
1950
1951 #define C(n)                            \
1952 do {                                    \
1953         if (s->n && !d->n)              \
1954                 d->n = os_strdup(s->n); \
1955 } while (0)
1956
1957         C(device_name);
1958         C(manufacturer);
1959         C(model_name);
1960         C(model_number);
1961         C(serial_number);
1962         C(config_methods);
1963 #undef C
1964
1965         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1966         os_memcpy(d->sec_device_type, s->sec_device_type,
1967                   sizeof(d->sec_device_type));
1968         d->num_sec_device_types = s->num_sec_device_types;
1969
1970         d->p2p_group_idle = s->p2p_group_idle;
1971         d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
1972         d->p2p_intra_bss = s->p2p_intra_bss;
1973         d->persistent_reconnect = s->persistent_reconnect;
1974         d->max_num_sta = s->max_num_sta;
1975         d->pbc_in_m1 = s->pbc_in_m1;
1976         d->ignore_old_scan_res = s->ignore_old_scan_res;
1977         d->beacon_int = s->beacon_int;
1978         d->dtim_period = s->dtim_period;
1979         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1980         d->disassoc_low_ack = s->disassoc_low_ack;
1981         d->disable_scan_offload = s->disable_scan_offload;
1982         d->passive_scan = s->passive_scan;
1983
1984         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey &&
1985             !d->wps_nfc_pw_from_config) {
1986                 wpabuf_free(d->wps_nfc_dh_privkey);
1987                 wpabuf_free(d->wps_nfc_dh_pubkey);
1988                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1989                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1990         }
1991         d->p2p_cli_probe = s->p2p_cli_probe;
1992 }
1993
1994
1995 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1996                                       char *ifname, size_t len)
1997 {
1998         char *ifname_ptr = wpa_s->ifname;
1999
2000         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
2001                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
2002                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
2003         }
2004
2005         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
2006         if (os_strlen(ifname) >= IFNAMSIZ &&
2007             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
2008                 int res;
2009
2010                 /* Try to avoid going over the IFNAMSIZ length limit */
2011                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
2012                 if (os_snprintf_error(len, res) && len)
2013                         ifname[len - 1] = '\0';
2014         }
2015 }
2016
2017
2018 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
2019                                         enum wpa_driver_if_type type)
2020 {
2021         char ifname[120], force_ifname[120];
2022
2023         if (wpa_s->pending_interface_name[0]) {
2024                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
2025                            "- skip creation of a new one");
2026                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
2027                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
2028                                    "unknown?! ifname='%s'",
2029                                    wpa_s->pending_interface_name);
2030                         return -1;
2031                 }
2032                 return 0;
2033         }
2034
2035         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
2036         force_ifname[0] = '\0';
2037
2038         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
2039                    ifname);
2040         wpa_s->p2p_group_idx++;
2041
2042         wpa_s->pending_interface_type = type;
2043         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
2044                            wpa_s->pending_interface_addr, NULL) < 0) {
2045                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
2046                            "interface");
2047                 return -1;
2048         }
2049
2050         if (force_ifname[0]) {
2051                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2052                            force_ifname);
2053                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2054                            sizeof(wpa_s->pending_interface_name));
2055         } else
2056                 os_strlcpy(wpa_s->pending_interface_name, ifname,
2057                            sizeof(wpa_s->pending_interface_name));
2058         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2059                    MACSTR, wpa_s->pending_interface_name,
2060                    MAC2STR(wpa_s->pending_interface_addr));
2061
2062         return 0;
2063 }
2064
2065
2066 static void wpas_p2p_remove_pending_group_interface(
2067         struct wpa_supplicant *wpa_s)
2068 {
2069         if (!wpa_s->pending_interface_name[0] ||
2070             is_zero_ether_addr(wpa_s->pending_interface_addr))
2071                 return; /* No pending virtual interface */
2072
2073         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2074                    wpa_s->pending_interface_name);
2075         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2076                           wpa_s->pending_interface_name);
2077         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2078         wpa_s->pending_interface_name[0] = '\0';
2079         wpa_s->global->pending_group_iface_for_p2ps = 0;
2080 }
2081
2082
2083 static struct wpa_supplicant *
2084 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2085 {
2086         struct wpa_interface iface;
2087         struct wpa_supplicant *group_wpa_s;
2088
2089         if (!wpa_s->pending_interface_name[0]) {
2090                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2091                 if (!wpas_p2p_create_iface(wpa_s))
2092                         return NULL;
2093                 /*
2094                  * Something has forced us to remove the pending interface; try
2095                  * to create a new one and hope for the best that we will get
2096                  * the same local address.
2097                  */
2098                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2099                                                  WPA_IF_P2P_CLIENT) < 0)
2100                         return NULL;
2101         }
2102
2103         os_memset(&iface, 0, sizeof(iface));
2104         iface.ifname = wpa_s->pending_interface_name;
2105         iface.driver = wpa_s->driver->name;
2106         if (wpa_s->conf->ctrl_interface == NULL &&
2107             wpa_s->parent != wpa_s &&
2108             wpa_s->p2p_mgmt &&
2109             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2110                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2111         else
2112                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2113         iface.driver_param = wpa_s->conf->driver_param;
2114         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2115         if (group_wpa_s == NULL) {
2116                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2117                            "wpa_supplicant interface");
2118                 return NULL;
2119         }
2120         wpa_s->pending_interface_name[0] = '\0';
2121         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2122                 P2P_GROUP_INTERFACE_CLIENT;
2123         wpa_s->global->p2p_group_formation = group_wpa_s;
2124         wpa_s->global->pending_group_iface_for_p2ps = 0;
2125
2126         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2127
2128         return group_wpa_s;
2129 }
2130
2131
2132 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2133                                              void *timeout_ctx)
2134 {
2135         struct wpa_supplicant *wpa_s = eloop_ctx;
2136         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2137         wpas_p2p_group_formation_failed(wpa_s, 0);
2138 }
2139
2140
2141 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2142                                             int already_deleted)
2143 {
2144         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2145                              wpa_s->p2pdev, NULL);
2146         if (wpa_s->global->p2p)
2147                 p2p_group_formation_failed(wpa_s->global->p2p);
2148         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2149 }
2150
2151
2152 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2153 {
2154         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2155         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2156                              wpa_s->p2pdev, NULL);
2157         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2158                                wpa_s->p2pdev, NULL);
2159         wpa_s->global->p2p_fail_on_wps_complete = 0;
2160 }
2161
2162
2163 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2164 {
2165         if (wpa_s->global->p2p_group_formation != wpa_s)
2166                 return;
2167         /* Speed up group formation timeout since this cannot succeed */
2168         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2169                              wpa_s->p2pdev, NULL);
2170         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2171                                wpa_s->p2pdev, NULL);
2172 }
2173
2174
2175 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2176 {
2177         struct wpa_supplicant *wpa_s = ctx;
2178         struct wpa_supplicant *group_wpa_s;
2179
2180         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2181                 wpa_drv_cancel_remain_on_channel(wpa_s);
2182                 wpa_s->off_channel_freq = 0;
2183                 wpa_s->roc_waiting_drv_freq = 0;
2184         }
2185
2186         if (res->status) {
2187                 wpa_msg_global(wpa_s, MSG_INFO,
2188                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2189                                res->status);
2190                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2191                 wpas_p2p_remove_pending_group_interface(wpa_s);
2192                 return;
2193         }
2194
2195         if (!res->role_go) {
2196                 /* Inform driver of the operating channel of GO. */
2197                 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2198         }
2199
2200         if (wpa_s->p2p_go_ht40)
2201                 res->ht40 = 1;
2202         if (wpa_s->p2p_go_vht)
2203                 res->vht = 1;
2204         res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth;
2205         res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2;
2206
2207         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2208                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2209                        " wps_method=%s",
2210                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2211                        MAC2STR(res->peer_device_addr),
2212                        MAC2STR(res->peer_interface_addr),
2213                        p2p_wps_method_text(res->wps_method));
2214         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2215
2216         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2217                 struct wpa_ssid *ssid;
2218                 ssid = wpa_config_get_network(wpa_s->conf,
2219                                               wpa_s->p2p_persistent_id);
2220                 if (ssid && ssid->disabled == 2 &&
2221                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2222                         size_t len = os_strlen(ssid->passphrase);
2223                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2224                                    "on requested persistent group");
2225                         os_memcpy(res->passphrase, ssid->passphrase, len);
2226                         res->passphrase[len] = '\0';
2227                 }
2228         }
2229
2230         if (wpa_s->create_p2p_iface) {
2231                 group_wpa_s =
2232                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2233                 if (group_wpa_s == NULL) {
2234                         wpas_p2p_remove_pending_group_interface(wpa_s);
2235                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2236                                              wpa_s, NULL);
2237                         wpas_p2p_group_formation_failed(wpa_s, 1);
2238                         return;
2239                 }
2240                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2241                 wpa_s->pending_interface_name[0] = '\0';
2242         } else {
2243                 group_wpa_s = wpa_s->parent;
2244                 wpa_s->global->p2p_group_formation = group_wpa_s;
2245                 if (group_wpa_s != wpa_s)
2246                         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2247         }
2248
2249         group_wpa_s->p2p_in_provisioning = 1;
2250         group_wpa_s->p2pdev = wpa_s;
2251         if (group_wpa_s != wpa_s) {
2252                 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2253                           sizeof(group_wpa_s->p2p_pin));
2254                 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2255         }
2256         if (res->role_go) {
2257                 wpas_start_wps_go(group_wpa_s, res, 1);
2258         } else {
2259                 os_get_reltime(&group_wpa_s->scan_min_time);
2260                 wpas_start_wps_enrollee(group_wpa_s, res);
2261         }
2262
2263         wpa_s->p2p_long_listen = 0;
2264         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2265
2266         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2267         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2268                                (res->peer_config_timeout % 100) * 10000,
2269                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2270 }
2271
2272
2273 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2274                                u8 go_intent)
2275 {
2276         struct wpa_supplicant *wpa_s = ctx;
2277         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2278                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2279                        dev_passwd_id, go_intent);
2280
2281         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2282 }
2283
2284
2285 static void wpas_dev_found(void *ctx, const u8 *addr,
2286                            const struct p2p_peer_info *info,
2287                            int new_device)
2288 {
2289 #ifndef CONFIG_NO_STDOUT_DEBUG
2290         struct wpa_supplicant *wpa_s = ctx;
2291         char devtype[WPS_DEV_TYPE_BUFSIZE];
2292         char *wfd_dev_info_hex = NULL;
2293
2294 #ifdef CONFIG_WIFI_DISPLAY
2295         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2296                                                     WFD_SUBELEM_DEVICE_INFO);
2297 #endif /* CONFIG_WIFI_DISPLAY */
2298
2299         if (info->p2ps_instance) {
2300                 char str[256];
2301                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2302                 size_t len = wpabuf_len(info->p2ps_instance);
2303
2304                 while (len) {
2305                         u32 id;
2306                         u16 methods;
2307                         u8 str_len;
2308
2309                         if (len < 4 + 2 + 1)
2310                                 break;
2311                         id = WPA_GET_LE32(buf);
2312                         buf += sizeof(u32);
2313                         methods = WPA_GET_BE16(buf);
2314                         buf += sizeof(u16);
2315                         str_len = *buf++;
2316                         if (str_len > len - 4 - 2 - 1)
2317                                 break;
2318                         os_memcpy(str, buf, str_len);
2319                         str[str_len] = '\0';
2320                         buf += str_len;
2321                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2322
2323                         wpa_msg_global(wpa_s, MSG_INFO,
2324                                        P2P_EVENT_DEVICE_FOUND MACSTR
2325                                        " p2p_dev_addr=" MACSTR
2326                                        " pri_dev_type=%s name='%s'"
2327                                        " config_methods=0x%x"
2328                                        " dev_capab=0x%x"
2329                                        " group_capab=0x%x"
2330                                        " adv_id=%x asp_svc=%s%s",
2331                                        MAC2STR(addr),
2332                                        MAC2STR(info->p2p_device_addr),
2333                                        wps_dev_type_bin2str(
2334                                                info->pri_dev_type,
2335                                                devtype, sizeof(devtype)),
2336                                        info->device_name, methods,
2337                                        info->dev_capab, info->group_capab,
2338                                        id, str,
2339                                        info->vendor_elems ?
2340                                        " vendor_elems=1" : "");
2341                 }
2342                 goto done;
2343         }
2344
2345         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2346                        " p2p_dev_addr=" MACSTR
2347                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2348                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2349                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2350                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2351                                             sizeof(devtype)),
2352                        info->device_name, info->config_methods,
2353                        info->dev_capab, info->group_capab,
2354                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2355                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2356                        info->vendor_elems ? " vendor_elems=1" : "",
2357                        new_device);
2358
2359 done:
2360         os_free(wfd_dev_info_hex);
2361 #endif /* CONFIG_NO_STDOUT_DEBUG */
2362
2363         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2364 }
2365
2366
2367 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2368 {
2369         struct wpa_supplicant *wpa_s = ctx;
2370
2371         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2372                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2373
2374         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2375 }
2376
2377
2378 static void wpas_find_stopped(void *ctx)
2379 {
2380         struct wpa_supplicant *wpa_s = ctx;
2381
2382         if (wpa_s->p2p_scan_work && wpas_abort_ongoing_scan(wpa_s) < 0)
2383                 wpa_printf(MSG_DEBUG, "P2P: Abort ongoing scan failed");
2384
2385         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2386         wpas_notify_p2p_find_stopped(wpa_s);
2387 }
2388
2389
2390 struct wpas_p2p_listen_work {
2391         unsigned int freq;
2392         unsigned int duration;
2393         struct wpabuf *probe_resp_ie;
2394 };
2395
2396
2397 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2398 {
2399         if (lwork == NULL)
2400                 return;
2401         wpabuf_free(lwork->probe_resp_ie);
2402         os_free(lwork);
2403 }
2404
2405
2406 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2407 {
2408         struct wpas_p2p_listen_work *lwork;
2409
2410         if (!wpa_s->p2p_listen_work)
2411                 return;
2412
2413         lwork = wpa_s->p2p_listen_work->ctx;
2414         wpas_p2p_listen_work_free(lwork);
2415         radio_work_done(wpa_s->p2p_listen_work);
2416         wpa_s->p2p_listen_work = NULL;
2417 }
2418
2419
2420 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2421 {
2422         struct wpa_supplicant *wpa_s = work->wpa_s;
2423         struct wpas_p2p_listen_work *lwork = work->ctx;
2424         unsigned int duration;
2425
2426         if (deinit) {
2427                 if (work->started) {
2428                         wpa_s->p2p_listen_work = NULL;
2429                         wpas_stop_listen(wpa_s);
2430                 }
2431                 wpas_p2p_listen_work_free(lwork);
2432                 return;
2433         }
2434
2435         wpa_s->p2p_listen_work = work;
2436
2437         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2438
2439         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2440                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2441                            "report received Probe Request frames");
2442                 wpas_p2p_listen_work_done(wpa_s);
2443                 return;
2444         }
2445
2446         wpa_s->pending_listen_freq = lwork->freq;
2447         wpa_s->pending_listen_duration = lwork->duration;
2448
2449         duration = lwork->duration;
2450 #ifdef CONFIG_TESTING_OPTIONS
2451         if (wpa_s->extra_roc_dur) {
2452                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2453                            duration, duration + wpa_s->extra_roc_dur);
2454                 duration += wpa_s->extra_roc_dur;
2455         }
2456 #endif /* CONFIG_TESTING_OPTIONS */
2457
2458         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2459                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2460                            "to remain on channel (%u MHz) for Listen "
2461                            "state", lwork->freq);
2462                 wpas_p2p_listen_work_done(wpa_s);
2463                 wpa_s->pending_listen_freq = 0;
2464                 return;
2465         }
2466         wpa_s->off_channel_freq = 0;
2467         wpa_s->roc_waiting_drv_freq = lwork->freq;
2468 }
2469
2470
2471 static int wpas_start_listen(void *ctx, unsigned int freq,
2472                              unsigned int duration,
2473                              const struct wpabuf *probe_resp_ie)
2474 {
2475         struct wpa_supplicant *wpa_s = ctx;
2476         struct wpas_p2p_listen_work *lwork;
2477
2478         if (wpa_s->p2p_listen_work) {
2479                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2480                 return -1;
2481         }
2482
2483         lwork = os_zalloc(sizeof(*lwork));
2484         if (lwork == NULL)
2485                 return -1;
2486         lwork->freq = freq;
2487         lwork->duration = duration;
2488         if (probe_resp_ie) {
2489                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2490                 if (lwork->probe_resp_ie == NULL) {
2491                         wpas_p2p_listen_work_free(lwork);
2492                         return -1;
2493                 }
2494         }
2495
2496         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2497                            lwork) < 0) {
2498                 wpas_p2p_listen_work_free(lwork);
2499                 return -1;
2500         }
2501
2502         return 0;
2503 }
2504
2505
2506 static void wpas_stop_listen(void *ctx)
2507 {
2508         struct wpa_supplicant *wpa_s = ctx;
2509         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2510                 wpa_drv_cancel_remain_on_channel(wpa_s);
2511                 wpa_s->off_channel_freq = 0;
2512                 wpa_s->roc_waiting_drv_freq = 0;
2513         }
2514         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2515
2516         /*
2517          * Don't cancel Probe Request RX reporting for a connected P2P Client
2518          * handling Probe Request frames.
2519          */
2520         if (!wpa_s->p2p_cli_probe)
2521                 wpa_drv_probe_req_report(wpa_s, 0);
2522
2523         wpas_p2p_listen_work_done(wpa_s);
2524 }
2525
2526
2527 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2528                                 unsigned int freq)
2529 {
2530         struct wpa_supplicant *wpa_s = ctx;
2531         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2532                                  freq);
2533 }
2534
2535
2536 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2537                                          const u8 *peer, const char *params,
2538                                          unsigned int generated_pin)
2539 {
2540         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2541                        " %08d%s", MAC2STR(peer), generated_pin, params);
2542 }
2543
2544
2545 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2546                                         const u8 *peer, const char *params)
2547 {
2548         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2549                        "%s", MAC2STR(peer), params);
2550 }
2551
2552
2553 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2554                                const u8 *dev_addr, const u8 *pri_dev_type,
2555                                const char *dev_name, u16 supp_config_methods,
2556                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2557                                size_t group_id_len)
2558 {
2559         struct wpa_supplicant *wpa_s = ctx;
2560         char devtype[WPS_DEV_TYPE_BUFSIZE];
2561         char params[300];
2562         u8 empty_dev_type[8];
2563         unsigned int generated_pin = 0;
2564         struct wpa_supplicant *group = NULL;
2565         int res;
2566
2567         if (group_id) {
2568                 for (group = wpa_s->global->ifaces; group; group = group->next)
2569                 {
2570                         struct wpa_ssid *s = group->current_ssid;
2571                         if (s != NULL &&
2572                             s->mode == WPAS_MODE_P2P_GO &&
2573                             group_id_len - ETH_ALEN == s->ssid_len &&
2574                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2575                                       s->ssid_len) == 0)
2576                                 break;
2577                 }
2578         }
2579
2580         if (pri_dev_type == NULL) {
2581                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2582                 pri_dev_type = empty_dev_type;
2583         }
2584         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2585                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2586                           "dev_capab=0x%x group_capab=0x%x%s%s",
2587                           MAC2STR(dev_addr),
2588                           wps_dev_type_bin2str(pri_dev_type, devtype,
2589                                                sizeof(devtype)),
2590                           dev_name, supp_config_methods, dev_capab, group_capab,
2591                           group ? " group=" : "",
2592                           group ? group->ifname : "");
2593         if (os_snprintf_error(sizeof(params), res))
2594                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2595         params[sizeof(params) - 1] = '\0';
2596
2597         if (config_methods & WPS_CONFIG_DISPLAY) {
2598                 if (wps_generate_pin(&generated_pin) < 0) {
2599                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2600                         wpas_notify_p2p_provision_discovery(
2601                                 wpa_s, peer, 0 /* response */,
2602                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2603                         return;
2604                 }
2605                 wpas_prov_disc_local_display(wpa_s, peer, params,
2606                                              generated_pin);
2607         } else if (config_methods & WPS_CONFIG_KEYPAD)
2608                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2609         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2610                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2611                                MACSTR "%s", MAC2STR(peer), params);
2612
2613         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2614                                             P2P_PROV_DISC_SUCCESS,
2615                                             config_methods, generated_pin);
2616 }
2617
2618
2619 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2620 {
2621         struct wpa_supplicant *wpa_s = ctx;
2622         unsigned int generated_pin = 0;
2623         char params[20];
2624
2625         if (wpa_s->pending_pd_before_join &&
2626             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2627              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2628                 wpa_s->pending_pd_before_join = 0;
2629                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2630                            "join-existing-group operation");
2631                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2632                 return;
2633         }
2634
2635         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2636             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2637                 int res;
2638
2639                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2640                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2641                 if (os_snprintf_error(sizeof(params), res))
2642                         params[sizeof(params) - 1] = '\0';
2643         } else
2644                 params[0] = '\0';
2645
2646         if (config_methods & WPS_CONFIG_DISPLAY)
2647                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2648         else if (config_methods & WPS_CONFIG_KEYPAD) {
2649                 if (wps_generate_pin(&generated_pin) < 0) {
2650                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2651                         wpas_notify_p2p_provision_discovery(
2652                                 wpa_s, peer, 0 /* response */,
2653                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2654                         return;
2655                 }
2656                 wpas_prov_disc_local_display(wpa_s, peer, params,
2657                                              generated_pin);
2658         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2659                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2660                                MACSTR "%s", MAC2STR(peer), params);
2661
2662         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2663                                             P2P_PROV_DISC_SUCCESS,
2664                                             config_methods, generated_pin);
2665 }
2666
2667
2668 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2669                                 enum p2p_prov_disc_status status,
2670                                 u32 adv_id, const u8 *adv_mac,
2671                                 const char *deferred_session_resp)
2672 {
2673         struct wpa_supplicant *wpa_s = ctx;
2674
2675         if (wpa_s->p2p_fallback_to_go_neg) {
2676                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2677                         "failed - fall back to GO Negotiation");
2678                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
2679                                P2P_EVENT_FALLBACK_TO_GO_NEG
2680                                "reason=PD-failed");
2681                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2682                 return;
2683         }
2684
2685         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2686                 wpa_s->pending_pd_before_join = 0;
2687                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2688                            "join-existing-group operation (no ACK for PD "
2689                            "Req attempts)");
2690                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2691                 return;
2692         }
2693
2694         if (adv_id && adv_mac && deferred_session_resp) {
2695                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2696                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2697                                " deferred_session_resp='%s'",
2698                                MAC2STR(peer), status, adv_id,
2699                                deferred_session_resp);
2700         } else if (adv_id && adv_mac) {
2701                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2702                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2703                                MAC2STR(peer), status, adv_id);
2704         } else {
2705                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2706                                " p2p_dev_addr=" MACSTR " status=%d",
2707                                MAC2STR(peer), status);
2708         }
2709
2710         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2711                                             status, 0, 0);
2712 }
2713
2714
2715 static int freq_included(struct wpa_supplicant *wpa_s,
2716                          const struct p2p_channels *channels,
2717                          unsigned int freq)
2718 {
2719         if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2720             wpas_p2p_go_is_peer_freq(wpa_s, freq))
2721                 return 1;
2722         return 0;
2723 }
2724
2725
2726 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2727 {
2728         unsigned int num = P2P_MAX_CHANNELS;
2729         int *common_freqs;
2730         int ret;
2731
2732         p2p_go_dump_common_freqs(wpa_s);
2733         common_freqs = os_calloc(num, sizeof(int));
2734         if (!common_freqs)
2735                 return;
2736
2737         ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2738         if (ret < 0) {
2739                 wpa_dbg(wpa_s, MSG_DEBUG,
2740                         "P2P: Failed to get group common freqs");
2741                 os_free(common_freqs);
2742                 return;
2743         }
2744
2745         os_free(wpa_s->p2p_group_common_freqs);
2746         wpa_s->p2p_group_common_freqs = common_freqs;
2747         wpa_s->p2p_group_common_freqs_num = num;
2748         p2p_go_dump_common_freqs(wpa_s);
2749 }
2750
2751
2752 /*
2753  * Check if the given frequency is one of the possible operating frequencies
2754  * set after the completion of the GO Negotiation.
2755  */
2756 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2757 {
2758         unsigned int i;
2759
2760         p2p_go_dump_common_freqs(wpa_s);
2761
2762         /* assume no restrictions */
2763         if (!wpa_s->p2p_group_common_freqs_num)
2764                 return 1;
2765
2766         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2767                 if (wpa_s->p2p_group_common_freqs[i] == freq)
2768                         return 1;
2769         }
2770         return 0;
2771 }
2772
2773
2774 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2775                                struct sta_info *sta, void *ctx)
2776 {
2777         int *ecsa_support = ctx;
2778
2779         *ecsa_support &= sta->ecsa_supported;
2780
2781         return 0;
2782 }
2783
2784
2785 /* Check if all the peers support eCSA */
2786 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2787 {
2788         int ecsa_support = 1;
2789
2790         ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2791                         &ecsa_support);
2792
2793         return ecsa_support;
2794 }
2795
2796
2797 /**
2798  * Pick the best frequency to use from all the currently used frequencies.
2799  */
2800 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2801                                         struct wpa_used_freq_data *freqs,
2802                                         unsigned int num)
2803 {
2804         unsigned int i, c;
2805
2806         /* find a candidate freq that is supported by P2P */
2807         for (c = 0; c < num; c++)
2808                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2809                         break;
2810
2811         if (c == num)
2812                 return 0;
2813
2814         /* once we have a candidate, try to find a 'better' one */
2815         for (i = c + 1; i < num; i++) {
2816                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2817                         continue;
2818
2819                 /*
2820                  * 1. Infrastructure station interfaces have higher preference.
2821                  * 2. P2P Clients have higher preference.
2822                  * 3. All others.
2823                  */
2824                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2825                         c = i;
2826                         break;
2827                 }
2828
2829                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2830                         c = i;
2831         }
2832         return freqs[c].freq;
2833 }
2834
2835
2836 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2837                                   const u8 *go_dev_addr, const u8 *ssid,
2838                                   size_t ssid_len, int *go, u8 *group_bssid,
2839                                   int *force_freq, int persistent_group,
2840                                   const struct p2p_channels *channels,
2841                                   int dev_pw_id)
2842 {
2843         struct wpa_supplicant *wpa_s = ctx;
2844         struct wpa_ssid *s;
2845         struct wpa_used_freq_data *freqs;
2846         struct wpa_supplicant *grp;
2847         int best_freq;
2848
2849         if (!persistent_group) {
2850                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2851                            " to join an active group (SSID: %s)",
2852                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2853                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2854                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2855                      == 0 ||
2856                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2857                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2858                                    "authorized invitation");
2859                         goto accept_inv;
2860                 }
2861
2862 #ifdef CONFIG_WPS_NFC
2863                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2864                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2865                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2866                         wpa_s->p2p_wps_method = WPS_NFC;
2867                         wpa_s->pending_join_wps_method = WPS_NFC;
2868                         os_memcpy(wpa_s->pending_join_dev_addr,
2869                                   go_dev_addr, ETH_ALEN);
2870                         os_memcpy(wpa_s->pending_join_iface_addr,
2871                                   bssid, ETH_ALEN);
2872                         goto accept_inv;
2873                 }
2874 #endif /* CONFIG_WPS_NFC */
2875
2876                 /*
2877                  * Do not accept the invitation automatically; notify user and
2878                  * request approval.
2879                  */
2880                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2881         }
2882
2883         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2884         if (grp) {
2885                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2886                            "running persistent group");
2887                 if (*go)
2888                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2889                 goto accept_inv;
2890         }
2891
2892         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2893             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2894                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2895                            "invitation to re-invoke a persistent group");
2896                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2897         } else if (!wpa_s->conf->persistent_reconnect)
2898                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2899
2900         for (s = wpa_s->conf->ssid; s; s = s->next) {
2901                 if (s->disabled == 2 &&
2902                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2903                     s->ssid_len == ssid_len &&
2904                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2905                         break;
2906         }
2907
2908         if (!s) {
2909                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2910                            " requested reinvocation of an unknown group",
2911                            MAC2STR(sa));
2912                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2913         }
2914
2915         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2916                 *go = 1;
2917                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2918                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2919                                    "interface is already in use - reject "
2920                                    "invitation");
2921                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2922                 }
2923                 if (wpa_s->p2p_mgmt)
2924                         os_memcpy(group_bssid, wpa_s->parent->own_addr,
2925                                   ETH_ALEN);
2926                 else
2927                         os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2928         } else if (s->mode == WPAS_MODE_P2P_GO) {
2929                 *go = 1;
2930                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2931                 {
2932                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2933                                    "interface address for the group");
2934                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2935                 }
2936                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2937                           ETH_ALEN);
2938         }
2939
2940 accept_inv:
2941         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2942
2943         best_freq = 0;
2944         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2945                           sizeof(struct wpa_used_freq_data));
2946         if (freqs) {
2947                 int num_channels = wpa_s->num_multichan_concurrent;
2948                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2949                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2950                 os_free(freqs);
2951         }
2952
2953         /* Get one of the frequencies currently in use */
2954         if (best_freq > 0) {
2955                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2956                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2957
2958                 if (wpa_s->num_multichan_concurrent < 2 ||
2959                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2960                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2961                         *force_freq = best_freq;
2962                 }
2963         }
2964
2965         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2966             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2967                 if (*go == 0) {
2968                         /* We are the client */
2969                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2970                                    "running a GO but we are capable of MCC, "
2971                                    "figure out the best channel to use");
2972                         *force_freq = 0;
2973                 } else if (!freq_included(wpa_s, channels, *force_freq)) {
2974                         /* We are the GO, and *force_freq is not in the
2975                          * intersection */
2976                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2977                                    "in intersection but we are capable of MCC, "
2978                                    "figure out the best channel to use",
2979                                    *force_freq);
2980                         *force_freq = 0;
2981                 }
2982         }
2983
2984         return P2P_SC_SUCCESS;
2985 }
2986
2987
2988 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2989                                      const u8 *ssid, size_t ssid_len,
2990                                      const u8 *go_dev_addr, u8 status,
2991                                      int op_freq)
2992 {
2993         struct wpa_supplicant *wpa_s = ctx;
2994         struct wpa_ssid *s;
2995
2996         for (s = wpa_s->conf->ssid; s; s = s->next) {
2997                 if (s->disabled == 2 &&
2998                     s->ssid_len == ssid_len &&
2999                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3000                         break;
3001         }
3002
3003         if (status == P2P_SC_SUCCESS) {
3004                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3005                            " was accepted; op_freq=%d MHz, SSID=%s",
3006                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3007                 if (s) {
3008                         int go = s->mode == WPAS_MODE_P2P_GO;
3009                         if (go) {
3010                                 wpa_msg_global(wpa_s, MSG_INFO,
3011                                                P2P_EVENT_INVITATION_ACCEPTED
3012                                                "sa=" MACSTR
3013                                                " persistent=%d freq=%d",
3014                                                MAC2STR(sa), s->id, op_freq);
3015                         } else {
3016                                 wpa_msg_global(wpa_s, MSG_INFO,
3017                                                P2P_EVENT_INVITATION_ACCEPTED
3018                                                "sa=" MACSTR
3019                                                " persistent=%d",
3020                                                MAC2STR(sa), s->id);
3021                         }
3022                         wpas_p2p_group_add_persistent(
3023                                 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL,
3024                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
3025                                 1);
3026                 } else if (bssid) {
3027                         wpa_s->user_initiated_pd = 0;
3028                         wpa_msg_global(wpa_s, MSG_INFO,
3029                                        P2P_EVENT_INVITATION_ACCEPTED
3030                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3031                                        " bssid=" MACSTR " unknown-network",
3032                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3033                                        MAC2STR(bssid));
3034                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3035                                       wpa_s->p2p_wps_method, 0, op_freq,
3036                                       ssid, ssid_len);
3037                 }
3038                 return;
3039         }
3040
3041         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3042                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3043                            " was rejected (status %u)", MAC2STR(sa), status);
3044                 return;
3045         }
3046
3047         if (!s) {
3048                 if (bssid) {
3049                         wpa_msg_global(wpa_s, MSG_INFO,
3050                                        P2P_EVENT_INVITATION_RECEIVED
3051                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3052                                        " bssid=" MACSTR " unknown-network",
3053                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3054                                        MAC2STR(bssid));
3055                 } else {
3056                         wpa_msg_global(wpa_s, MSG_INFO,
3057                                        P2P_EVENT_INVITATION_RECEIVED
3058                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3059                                        " unknown-network",
3060                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3061                 }
3062                 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3063                                                     bssid, 0, op_freq);
3064                 return;
3065         }
3066
3067         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3068                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3069                                "sa=" MACSTR " persistent=%d freq=%d",
3070                                MAC2STR(sa), s->id, op_freq);
3071         } else {
3072                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3073                                "sa=" MACSTR " persistent=%d",
3074                                MAC2STR(sa), s->id);
3075         }
3076         wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3077                                             s->id, op_freq);
3078 }
3079
3080
3081 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3082                                         struct wpa_ssid *ssid,
3083                                         const u8 *peer, int inv)
3084 {
3085         size_t i;
3086         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3087
3088         if (ssid == NULL)
3089                 return;
3090
3091         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3092                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3093                               ETH_ALEN) == 0)
3094                         break;
3095         }
3096         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3097                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3098                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3099                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3100                                    "due to invitation result", ssid->id);
3101                         wpas_notify_network_removed(wpa_s, ssid);
3102                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3103                         return;
3104                 }
3105                 return; /* Peer not found in client list */
3106         }
3107
3108         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3109                    "group %d client list%s",
3110                    MAC2STR(peer), ssid->id,
3111                    inv ? " due to invitation result" : "");
3112         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3113                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3114                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3115         ssid->num_p2p_clients--;
3116         if (p2p_wpa_s->conf->update_config &&
3117             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3118                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3119 }
3120
3121
3122 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3123                                           const u8 *peer)
3124 {
3125         struct wpa_ssid *ssid;
3126
3127         wpa_s = wpa_s->global->p2p_invite_group;
3128         if (wpa_s == NULL)
3129                 return; /* No known invitation group */
3130         ssid = wpa_s->current_ssid;
3131         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3132             !ssid->p2p_persistent_group)
3133                 return; /* Not operating as a GO in persistent group */
3134         ssid = wpas_p2p_get_persistent(wpa_s->p2pdev, peer,
3135                                        ssid->ssid, ssid->ssid_len);
3136         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3137 }
3138
3139
3140 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3141                                    const struct p2p_channels *channels,
3142                                    const u8 *peer, int neg_freq,
3143                                    int peer_oper_freq)
3144 {
3145         struct wpa_supplicant *wpa_s = ctx;
3146         struct wpa_ssid *ssid;
3147         int freq;
3148
3149         if (bssid) {
3150                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3151                                "status=%d " MACSTR,
3152                                status, MAC2STR(bssid));
3153         } else {
3154                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3155                                "status=%d ", status);
3156         }
3157         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3158
3159         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3160                    status, MAC2STR(peer));
3161         if (wpa_s->pending_invite_ssid_id == -1) {
3162                 struct wpa_supplicant *group_if =
3163                         wpa_s->global->p2p_invite_group;
3164
3165                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3166                         wpas_remove_persistent_client(wpa_s, peer);
3167
3168                 /*
3169                  * Invitation to an active group. If this is successful and we
3170                  * are the GO, set the client wait to postpone some concurrent
3171                  * operations and to allow provisioning and connection to happen
3172                  * more quickly.
3173                  */
3174                 if (status == P2P_SC_SUCCESS &&
3175                     group_if && group_if->current_ssid &&
3176                     group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3177                         os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3178 #ifdef CONFIG_TESTING_OPTIONS
3179                         if (group_if->p2p_go_csa_on_inv) {
3180                                 wpa_printf(MSG_DEBUG,
3181                                            "Testing: force P2P GO CSA after invitation");
3182                                 eloop_cancel_timeout(
3183                                         wpas_p2p_reconsider_moving_go,
3184                                         wpa_s, NULL);
3185                                 eloop_register_timeout(
3186                                         0, 50000,
3187                                         wpas_p2p_reconsider_moving_go,
3188                                         wpa_s, NULL);
3189                         }
3190 #endif /* CONFIG_TESTING_OPTIONS */
3191                 }
3192                 return;
3193         }
3194
3195         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3196                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3197                            "invitation exchange to indicate readiness for "
3198                            "re-invocation");
3199         }
3200
3201         if (status != P2P_SC_SUCCESS) {
3202                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3203                         ssid = wpa_config_get_network(
3204                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3205                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3206                 }
3207                 wpas_p2p_remove_pending_group_interface(wpa_s);
3208                 return;
3209         }
3210
3211         ssid = wpa_config_get_network(wpa_s->conf,
3212                                       wpa_s->pending_invite_ssid_id);
3213         if (ssid == NULL) {
3214                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3215                            "data matching with invitation");
3216                 return;
3217         }
3218
3219         /*
3220          * The peer could have missed our ctrl::ack frame for Invitation
3221          * Response and continue retransmitting the frame. To reduce the
3222          * likelihood of the peer not getting successful TX status for the
3223          * Invitation Response frame, wait a short time here before starting
3224          * the persistent group so that we will remain on the current channel to
3225          * acknowledge any possible retransmission from the peer.
3226          */
3227         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3228                 "starting persistent group");
3229         os_sleep(0, 50000);
3230
3231         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3232             freq_included(wpa_s, channels, neg_freq))
3233                 freq = neg_freq;
3234         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3235                  freq_included(wpa_s, channels, peer_oper_freq))
3236                 freq = peer_oper_freq;
3237         else
3238                 freq = 0;
3239
3240         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3241                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3242         wpas_p2p_group_add_persistent(wpa_s, ssid,
3243                                       ssid->mode == WPAS_MODE_P2P_GO,
3244                                       wpa_s->p2p_persistent_go_freq,
3245                                       freq,
3246                                       wpa_s->p2p_go_vht_center_freq2,
3247                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3248                                       wpa_s->p2p_go_max_oper_chwidth,
3249                                       channels,
3250                                       ssid->mode == WPAS_MODE_P2P_GO ?
3251                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3252                                       0, 1);
3253 }
3254
3255
3256 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3257                                     unsigned int freq)
3258 {
3259         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3260                 return 1;
3261         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3262 }
3263
3264
3265 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3266 {
3267         reg->channel[reg->channels] = chan;
3268         reg->channels++;
3269 }
3270
3271
3272 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3273                                      struct p2p_channels *chan,
3274                                      struct p2p_channels *cli_chan)
3275 {
3276         int i, cla = 0;
3277
3278         wpa_s->global->p2p_24ghz_social_channels = 1;
3279
3280         os_memset(cli_chan, 0, sizeof(*cli_chan));
3281
3282         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3283                    "band");
3284
3285         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3286         chan->reg_class[cla].reg_class = 81;
3287         chan->reg_class[cla].channels = 0;
3288         for (i = 0; i < 11; i++) {
3289                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3290                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3291         }
3292         if (chan->reg_class[cla].channels)
3293                 cla++;
3294
3295         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3296                    "band");
3297
3298         /* Operating class 115 - 5 GHz, channels 36-48 */
3299         chan->reg_class[cla].reg_class = 115;
3300         chan->reg_class[cla].channels = 0;
3301         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3302                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3303         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3304                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3305         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3306                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3307         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3308                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3309         if (chan->reg_class[cla].channels)
3310                 cla++;
3311
3312         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3313                    "band");
3314
3315         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3316         chan->reg_class[cla].reg_class = 124;
3317         chan->reg_class[cla].channels = 0;
3318         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3319                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3320         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3321                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3322         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3323                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3324         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3325                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3326         if (chan->reg_class[cla].channels)
3327                 cla++;
3328
3329         chan->reg_classes = cla;
3330         return 0;
3331 }
3332
3333
3334 enum chan_allowed {
3335         NOT_ALLOWED, NO_IR, ALLOWED
3336 };
3337
3338 static int has_channel(struct wpa_global *global,
3339                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3340 {
3341         int i;
3342         unsigned int freq;
3343
3344         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3345                 chan * 5;
3346         if (wpas_p2p_disallowed_freq(global, freq))
3347                 return NOT_ALLOWED;
3348
3349         for (i = 0; i < mode->num_channels; i++) {
3350                 if (mode->channels[i].chan == chan) {
3351                         if (flags)
3352                                 *flags = mode->channels[i].flag;
3353                         if (mode->channels[i].flag &
3354                             (HOSTAPD_CHAN_DISABLED |
3355                              HOSTAPD_CHAN_RADAR))
3356                                 return NOT_ALLOWED;
3357                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3358                                 return NO_IR;
3359                         return ALLOWED;
3360                 }
3361         }
3362
3363         return NOT_ALLOWED;
3364 }
3365
3366
3367 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3368                                      struct hostapd_hw_modes *mode,
3369                                      u8 channel)
3370 {
3371         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3372         unsigned int i;
3373
3374         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3375                 return 0;
3376
3377         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3378                 /*
3379                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3380                  * so the center channel is 6 channels away from the start/end.
3381                  */
3382                 if (channel >= center_channels[i] - 6 &&
3383                     channel <= center_channels[i] + 6)
3384                         return center_channels[i];
3385
3386         return 0;
3387 }
3388
3389
3390 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3391                                                struct hostapd_hw_modes *mode,
3392                                                u8 channel, u8 bw)
3393 {
3394         u8 center_chan;
3395         int i, flags;
3396         enum chan_allowed res, ret = ALLOWED;
3397
3398         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3399         if (!center_chan)
3400                 return NOT_ALLOWED;
3401         if (center_chan >= 58 && center_chan <= 138)
3402                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3403
3404         /* check all the channels are available */
3405         for (i = 0; i < 4; i++) {
3406                 int adj_chan = center_chan - 6 + i * 4;
3407
3408                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3409                 if (res == NOT_ALLOWED)
3410                         return NOT_ALLOWED;
3411                 if (res == NO_IR)
3412                         ret = NO_IR;
3413
3414                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3415                         return NOT_ALLOWED;
3416                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3417                         return NOT_ALLOWED;
3418                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3419                         return NOT_ALLOWED;
3420                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3421                         return NOT_ALLOWED;
3422         }
3423
3424         return ret;
3425 }
3426
3427
3428 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3429                                      struct hostapd_hw_modes *mode,
3430                                      u8 channel)
3431 {
3432         u8 center_channels[] = { 50, 114 };
3433         unsigned int i;
3434
3435         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3436                 return 0;
3437
3438         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3439                 /*
3440                  * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3441                  * so the center channel is 14 channels away from the start/end.
3442                  */
3443                 if (channel >= center_channels[i] - 14 &&
3444                     channel <= center_channels[i] + 14)
3445                         return center_channels[i];
3446
3447         return 0;
3448 }
3449
3450
3451 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3452                                                struct hostapd_hw_modes *mode,
3453                                                u8 channel, u8 bw)
3454 {
3455         u8 center_chan;
3456         int i, flags;
3457         enum chan_allowed res, ret = ALLOWED;
3458
3459         center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3460         if (!center_chan)
3461                 return NOT_ALLOWED;
3462         /* VHT 160 MHz uses DFS channels in most countries. */
3463
3464         /* Check all the channels are available */
3465         for (i = 0; i < 8; i++) {
3466                 int adj_chan = center_chan - 14 + i * 4;
3467
3468                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3469                 if (res == NOT_ALLOWED)
3470                         return NOT_ALLOWED;
3471
3472                 if (res == NO_IR)
3473                         ret = NO_IR;
3474
3475                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3476                         return NOT_ALLOWED;
3477                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3478                         return NOT_ALLOWED;
3479                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3480                         return NOT_ALLOWED;
3481                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3482                         return NOT_ALLOWED;
3483                 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3484                         return NOT_ALLOWED;
3485                 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3486                         return NOT_ALLOWED;
3487                 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3488                         return NOT_ALLOWED;
3489                 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3490                         return NOT_ALLOWED;
3491         }
3492
3493         return ret;
3494 }
3495
3496
3497 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3498                                                  struct hostapd_hw_modes *mode,
3499                                                  u8 channel, u8 bw)
3500 {
3501         int flag = 0;
3502         enum chan_allowed res, res2;
3503
3504         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3505         if (bw == BW40MINUS) {
3506                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3507                         return NOT_ALLOWED;
3508                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3509         } else if (bw == BW40PLUS) {
3510                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3511                         return NOT_ALLOWED;
3512                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3513         } else if (bw == BW80) {
3514                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3515         } else if (bw == BW160) {
3516                 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3517         }
3518
3519         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3520                 return NOT_ALLOWED;
3521         if (res == NO_IR || res2 == NO_IR)
3522                 return NO_IR;
3523         return res;
3524 }
3525
3526
3527 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3528                                    struct p2p_channels *chan,
3529                                    struct p2p_channels *cli_chan)
3530 {
3531         struct hostapd_hw_modes *mode;
3532         int cla, op, cli_cla;
3533
3534         if (wpa_s->hw.modes == NULL) {
3535                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3536                            "of all supported channels; assume dualband "
3537                            "support");
3538                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3539         }
3540
3541         cla = cli_cla = 0;
3542
3543         for (op = 0; global_op_class[op].op_class; op++) {
3544                 const struct oper_class_map *o = &global_op_class[op];
3545                 u8 ch;
3546                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3547
3548                 if (o->p2p == NO_P2P_SUPP)
3549                         continue;
3550
3551                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3552                 if (mode == NULL)
3553                         continue;
3554                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3555                         wpa_s->global->p2p_24ghz_social_channels = 1;
3556                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3557                         enum chan_allowed res;
3558                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3559                         if (res == ALLOWED) {
3560                                 if (reg == NULL) {
3561                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3562                                                    o->op_class);
3563                                         reg = &chan->reg_class[cla];
3564                                         cla++;
3565                                         reg->reg_class = o->op_class;
3566                                 }
3567                                 reg->channel[reg->channels] = ch;
3568                                 reg->channels++;
3569                         } else if (res == NO_IR &&
3570                                    wpa_s->conf->p2p_add_cli_chan) {
3571                                 if (cli_reg == NULL) {
3572                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3573                                                    o->op_class);
3574                                         cli_reg = &cli_chan->reg_class[cli_cla];
3575                                         cli_cla++;
3576                                         cli_reg->reg_class = o->op_class;
3577                                 }
3578                                 cli_reg->channel[cli_reg->channels] = ch;
3579                                 cli_reg->channels++;
3580                         }
3581                 }
3582                 if (reg) {
3583                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3584                                     reg->channel, reg->channels);
3585                 }
3586                 if (cli_reg) {
3587                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3588                                     cli_reg->channel, cli_reg->channels);
3589                 }
3590         }
3591
3592         chan->reg_classes = cla;
3593         cli_chan->reg_classes = cli_cla;
3594
3595         return 0;
3596 }
3597
3598
3599 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3600                            struct hostapd_hw_modes *mode, u8 channel)
3601 {
3602         int op;
3603         enum chan_allowed ret;
3604
3605         for (op = 0; global_op_class[op].op_class; op++) {
3606                 const struct oper_class_map *o = &global_op_class[op];
3607                 u8 ch;
3608
3609                 if (o->p2p == NO_P2P_SUPP)
3610                         continue;
3611
3612                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3613                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3614                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3615                             ch != channel)
3616                                 continue;
3617                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3618                         if (ret == ALLOWED)
3619                                 return (o->bw == BW40MINUS) ? -1 : 1;
3620                 }
3621         }
3622         return 0;
3623 }
3624
3625
3626 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3627                               struct hostapd_hw_modes *mode, u8 channel)
3628 {
3629         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3630                 return 0;
3631
3632         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3633 }
3634
3635
3636 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3637                                struct hostapd_hw_modes *mode, u8 channel)
3638 {
3639         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3640                 return 0;
3641         return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3642 }
3643
3644
3645 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3646                         size_t buf_len)
3647 {
3648         struct wpa_supplicant *wpa_s = ctx;
3649
3650         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3651                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3652                         break;
3653         }
3654         if (wpa_s == NULL)
3655                 return -1;
3656
3657         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3658 }
3659
3660
3661 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3662                                               const u8 *ssid, size_t ssid_len)
3663 {
3664         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3665                 struct wpa_ssid *s = wpa_s->current_ssid;
3666                 if (s == NULL)
3667                         continue;
3668                 if (s->mode != WPAS_MODE_P2P_GO &&
3669                     s->mode != WPAS_MODE_AP &&
3670                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3671                         continue;
3672                 if (s->ssid_len != ssid_len ||
3673                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3674                         continue;
3675                 return wpa_s;
3676         }
3677
3678         return NULL;
3679
3680 }
3681
3682
3683 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3684                                                   const u8 *peer_dev_addr)
3685 {
3686         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3687                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3688                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3689                         continue;
3690                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3691                         return wpa_s;
3692         }
3693
3694         return NULL;
3695 }
3696
3697
3698 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3699 {
3700         struct wpa_supplicant *wpa_s = ctx;
3701
3702         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3703 }
3704
3705
3706 static int wpas_is_concurrent_session_active(void *ctx)
3707 {
3708         struct wpa_supplicant *wpa_s = ctx;
3709         struct wpa_supplicant *ifs;
3710
3711         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3712                 if (ifs == wpa_s)
3713                         continue;
3714                 if (ifs->wpa_state > WPA_ASSOCIATED)
3715                         return 1;
3716         }
3717         return 0;
3718 }
3719
3720
3721 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3722 {
3723         struct wpa_supplicant *wpa_s = ctx;
3724         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3725 }
3726
3727
3728 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3729                                   const char *conf_p2p_dev)
3730 {
3731         struct wpa_interface iface;
3732         struct wpa_supplicant *p2pdev_wpa_s;
3733         char ifname[100];
3734         char force_name[100];
3735         int ret;
3736
3737         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3738                           wpa_s->ifname);
3739         if (os_snprintf_error(sizeof(ifname), ret))
3740                 return -1;
3741         force_name[0] = '\0';
3742         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3743         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3744                              force_name, wpa_s->pending_interface_addr, NULL);
3745         if (ret < 0) {
3746                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3747                 return ret;
3748         }
3749         os_strlcpy(wpa_s->pending_interface_name, ifname,
3750                    sizeof(wpa_s->pending_interface_name));
3751
3752         os_memset(&iface, 0, sizeof(iface));
3753         iface.p2p_mgmt = 1;
3754         iface.ifname = wpa_s->pending_interface_name;
3755         iface.driver = wpa_s->driver->name;
3756         iface.driver_param = wpa_s->conf->driver_param;
3757
3758         /*
3759          * If a P2P Device configuration file was given, use it as the interface
3760          * configuration file (instead of using parent's configuration file.
3761          */
3762         if (conf_p2p_dev) {
3763                 iface.confname = conf_p2p_dev;
3764                 iface.ctrl_interface = NULL;
3765         } else {
3766                 iface.confname = wpa_s->confname;
3767                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3768         }
3769
3770         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3771         if (!p2pdev_wpa_s) {
3772                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3773                 return -1;
3774         }
3775
3776         p2pdev_wpa_s->p2pdev = p2pdev_wpa_s;
3777         wpa_s->pending_interface_name[0] = '\0';
3778         return 0;
3779 }
3780
3781
3782 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3783                                const u8 *noa, size_t noa_len)
3784 {
3785         struct wpa_supplicant *wpa_s, *intf = ctx;
3786         char hex[100];
3787
3788         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3789                 if (wpa_s->waiting_presence_resp)
3790                         break;
3791         }
3792         if (!wpa_s) {
3793                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3794                 return;
3795         }
3796         wpa_s->waiting_presence_resp = 0;
3797
3798         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3799         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3800                 " status=%u noa=%s", MAC2STR(src), status, hex);
3801 }
3802
3803
3804 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3805                                      size_t ssid_len, u8 *go_dev_addr,
3806                                      u8 *ret_ssid, size_t *ret_ssid_len,
3807                                      u8 *intended_iface_addr)
3808 {
3809         struct wpa_supplicant *wpa_s = ctx;
3810         struct wpa_ssid *s;
3811
3812         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3813         if (s) {
3814                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3815                 *ret_ssid_len = s->ssid_len;
3816                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3817
3818                 if (s->mode != WPAS_MODE_P2P_GO) {
3819                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3820                 } else if (wpas_p2p_create_iface(wpa_s)) {
3821                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3822                                 return 0;
3823
3824                         os_memcpy(intended_iface_addr,
3825                                   wpa_s->pending_interface_addr, ETH_ALEN);
3826                 } else {
3827                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3828                                   ETH_ALEN);
3829                 }
3830                 return 1;
3831         }
3832
3833         return 0;
3834 }
3835
3836
3837 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3838                             u8 *ssid, size_t *ssid_len, int *group_iface,
3839                             unsigned int *freq)
3840 {
3841         struct wpa_supplicant *wpa_s = ctx;
3842         struct wpa_supplicant *go;
3843         struct wpa_ssid *s;
3844
3845         /*
3846          * group_iface will be set to 1 only if a dedicated interface for P2P
3847          * role is required. First, we try to reuse an active GO. However,
3848          * if it is not present, we will try to reactivate an existing
3849          * persistent group and set group_iface to 1, so the caller will know
3850          * that the pending interface should be used.
3851          */
3852         *group_iface = 0;
3853
3854         if (freq)
3855                 *freq = 0;
3856
3857         go = wpas_p2p_get_go_group(wpa_s);
3858         if (!go) {
3859                 s = wpas_p2p_get_persistent_go(wpa_s);
3860                 *group_iface = wpas_p2p_create_iface(wpa_s);
3861                 if (s)
3862                         os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3863                 else
3864                         return 0;
3865         } else {
3866                 s = go->current_ssid;
3867                 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3868                 if (freq)
3869                         *freq = go->assoc_freq;
3870         }
3871
3872         os_memcpy(ssid, s->ssid, s->ssid_len);
3873         *ssid_len = s->ssid_len;
3874
3875         return 1;
3876 }
3877
3878
3879 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3880                                     const u8 *ssid, size_t ssid_len)
3881 {
3882         struct wpa_supplicant *wpa_s = ctx;
3883         struct wpa_ssid *s;
3884         int save_config = 0;
3885         size_t i;
3886
3887         /* Start with our first choice of Persistent Groups */
3888         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3889                 if (go && ssid && ssid_len &&
3890                     s->ssid_len == ssid_len &&
3891                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3892                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3893                         break;
3894
3895                 /* Remove stale persistent group */
3896                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3897                         wpa_config_remove_network(wpa_s->conf, s->id);
3898                         save_config = 1;
3899                         continue;
3900                 }
3901
3902                 for (i = 0; i < s->num_p2p_clients; i++) {
3903                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3904                                       peer, ETH_ALEN) != 0)
3905                                 continue;
3906
3907                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3908                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3909                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3910                         break;
3911                 }
3912                 s->num_p2p_clients--;
3913                 save_config = 1;
3914         }
3915
3916         if (save_config)
3917                 p2p_config_write(wpa_s);
3918
3919         /* Return TRUE if valid SSID remains */
3920         return s != NULL;
3921 }
3922
3923
3924 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3925                                        const u8 *feat_cap, size_t feat_cap_len)
3926 {
3927         static const char pref[] = " feature_cap=";
3928         int ret;
3929
3930         buf[0] = '\0';
3931
3932         /*
3933          * We expect a feature capability to contain at least one byte to be
3934          * reported. The string buffer provided by the caller function is
3935          * expected to be big enough to contain all bytes of the attribute for
3936          * known specifications. This function truncates the reported bytes if
3937          * the feature capability data exceeds the string buffer size.
3938          */
3939         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3940                 return;
3941
3942         os_memcpy(buf, pref, sizeof(pref));
3943         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3944                                buf_len - sizeof(pref) + 1,
3945                                feat_cap, feat_cap_len);
3946
3947         if (ret != (2 * (int) feat_cap_len))
3948                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3949 }
3950
3951
3952 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3953                                     const u8 *adv_mac, const u8 *ses_mac,
3954                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3955                                     u8 conncap, int passwd_id,
3956                                     const u8 *persist_ssid,
3957                                     size_t persist_ssid_size, int response_done,
3958                                     int prov_start, const char *session_info,
3959                                     const u8 *feat_cap, size_t feat_cap_len,
3960                                     unsigned int freq,
3961                                     const u8 *group_ssid, size_t group_ssid_len)
3962 {
3963         struct wpa_supplicant *wpa_s = ctx;
3964         u8 mac[ETH_ALEN];
3965         struct wpa_ssid *persistent_go, *stale, *s = NULL;
3966         int save_config = 0;
3967         struct wpa_supplicant *go_wpa_s;
3968         char feat_cap_str[256];
3969
3970         if (!dev)
3971                 return;
3972
3973         os_memset(mac, 0, ETH_ALEN);
3974         if (!adv_mac)
3975                 adv_mac = mac;
3976         if (!ses_mac)
3977                 ses_mac = mac;
3978         if (!grp_mac)
3979                 grp_mac = mac;
3980
3981         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3982                                    feat_cap, feat_cap_len);
3983
3984         if (prov_start) {
3985                 if (session_info == NULL) {
3986                         wpa_msg_global(wpa_s, MSG_INFO,
3987                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3988                                        " adv_id=%x conncap=%x"
3989                                        " adv_mac=" MACSTR
3990                                        " session=%x mac=" MACSTR
3991                                        " dev_passwd_id=%d%s",
3992                                        MAC2STR(dev), adv_id, conncap,
3993                                        MAC2STR(adv_mac),
3994                                        ses_id, MAC2STR(ses_mac),
3995                                        passwd_id, feat_cap_str);
3996                 } else {
3997                         wpa_msg_global(wpa_s, MSG_INFO,
3998                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3999                                        " adv_id=%x conncap=%x"
4000                                        " adv_mac=" MACSTR
4001                                        " session=%x mac=" MACSTR
4002                                        " dev_passwd_id=%d info='%s'%s",
4003                                        MAC2STR(dev), adv_id, conncap,
4004                                        MAC2STR(adv_mac),
4005                                        ses_id, MAC2STR(ses_mac),
4006                                        passwd_id, session_info, feat_cap_str);
4007                 }
4008                 return;
4009         }
4010
4011         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
4012         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4013
4014         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4015                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4016                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4017
4018                 if (persistent_go && !persistent_go->num_p2p_clients) {
4019                         /* remove empty persistent GO */
4020                         wpa_config_remove_network(wpa_s->conf,
4021                                                   persistent_go->id);
4022                 }
4023
4024                 wpa_msg_global(wpa_s, MSG_INFO,
4025                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4026                                " status=%d"
4027                                " adv_id=%x adv_mac=" MACSTR
4028                                " session=%x mac=" MACSTR "%s",
4029                                MAC2STR(dev), status,
4030                                adv_id, MAC2STR(adv_mac),
4031                                ses_id, MAC2STR(ses_mac), feat_cap_str);
4032                 return;
4033         }
4034
4035         /* Clean up stale persistent groups with this device */
4036         if (persist_ssid && persist_ssid_size)
4037                 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4038                                             persist_ssid_size);
4039
4040         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4041             is_zero_ether_addr(grp_mac)) {
4042                 wpa_dbg(wpa_s, MSG_ERROR,
4043                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4044                 return;
4045         }
4046
4047         for (;;) {
4048                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4049                 if (!stale)
4050                         break;
4051
4052                 if (s && s->ssid_len == stale->ssid_len &&
4053                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4054                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4055                         break;
4056
4057                 /* Remove stale persistent group */
4058                 if (stale->mode != WPAS_MODE_P2P_GO ||
4059                     stale->num_p2p_clients <= 1) {
4060                         wpa_config_remove_network(wpa_s->conf, stale->id);
4061                 } else {
4062                         size_t i;
4063
4064                         for (i = 0; i < stale->num_p2p_clients; i++) {
4065                                 if (os_memcmp(stale->p2p_client_list +
4066                                               i * ETH_ALEN,
4067                                               dev, ETH_ALEN) == 0) {
4068                                         os_memmove(stale->p2p_client_list +
4069                                                    i * ETH_ALEN,
4070                                                    stale->p2p_client_list +
4071                                                    (i + 1) * ETH_ALEN,
4072                                                    (stale->num_p2p_clients -
4073                                                     i - 1) * ETH_ALEN);
4074                                         break;
4075                                 }
4076                         }
4077                         stale->num_p2p_clients--;
4078                 }
4079                 save_config = 1;
4080         }
4081
4082         if (save_config)
4083                 p2p_config_write(wpa_s);
4084
4085         if (s) {
4086                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4087                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4088
4089                 if (persistent_go && s != persistent_go &&
4090                     !persistent_go->num_p2p_clients) {
4091                         /* remove empty persistent GO */
4092                         wpa_config_remove_network(wpa_s->conf,
4093                                                   persistent_go->id);
4094                         /* Save config */
4095                 }
4096
4097                 wpa_msg_global(wpa_s, MSG_INFO,
4098                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4099                                " status=%d"
4100                                " adv_id=%x adv_mac=" MACSTR
4101                                " session=%x mac=" MACSTR
4102                                " persist=%d%s",
4103                                MAC2STR(dev), status,
4104                                adv_id, MAC2STR(adv_mac),
4105                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4106                 return;
4107         }
4108
4109         if (conncap == P2PS_SETUP_GROUP_OWNER) {
4110                 /*
4111                  * We need to copy the interface name. Simply saving a
4112                  * pointer isn't enough, since if we use pending_interface_name
4113                  * it will be overwritten when the group is added.
4114                  */
4115                 char go_ifname[100];
4116
4117                 go_ifname[0] = '\0';
4118                 if (!go_wpa_s) {
4119                         wpa_s->global->pending_p2ps_group = 1;
4120                         wpa_s->global->pending_p2ps_group_freq = freq;
4121
4122                         if (!wpas_p2p_create_iface(wpa_s))
4123                                 os_memcpy(go_ifname, wpa_s->ifname,
4124                                           sizeof(go_ifname));
4125                         else if (wpa_s->pending_interface_name[0])
4126                                 os_memcpy(go_ifname,
4127                                           wpa_s->pending_interface_name,
4128                                           sizeof(go_ifname));
4129
4130                         if (!go_ifname[0]) {
4131                                 wpas_p2ps_prov_complete(
4132                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4133                                         dev, adv_mac, ses_mac,
4134                                         grp_mac, adv_id, ses_id, 0, 0,
4135                                         NULL, 0, 0, 0, NULL, NULL, 0, 0,
4136                                         NULL, 0);
4137                                 return;
4138                         }
4139
4140                         /* If PD Resp complete, start up the GO */
4141                         if (response_done && persistent_go) {
4142                                 wpas_p2p_group_add_persistent(
4143                                         wpa_s, persistent_go,
4144                                         0, 0, freq, 0, 0, 0, 0, NULL,
4145                                         persistent_go->mode ==
4146                                         WPAS_MODE_P2P_GO ?
4147                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4148                                         0, 0);
4149                         } else if (response_done) {
4150                                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4151                         }
4152
4153                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4154                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4155                                           ETH_ALEN);
4156                                 wpa_s->p2ps_method_config_any = 1;
4157                         }
4158                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4159                         os_memcpy(go_ifname, go_wpa_s->ifname,
4160                                   sizeof(go_ifname));
4161
4162                         if (is_zero_ether_addr(grp_mac)) {
4163                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4164                                         "P2P: Setting PIN-1 for ANY");
4165                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4166                                                           "12345670", NULL, 0,
4167                                                           0);
4168                         } else {
4169                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4170                                         "P2P: Setting PIN-1 for " MACSTR,
4171                                         MAC2STR(grp_mac));
4172                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4173                                                           "12345670", NULL, 0,
4174                                                           0);
4175                         }
4176
4177                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4178                         wpa_s->p2ps_method_config_any = 1;
4179                 }
4180
4181                 wpa_msg_global(wpa_s, MSG_INFO,
4182                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4183                                " status=%d conncap=%x"
4184                                " adv_id=%x adv_mac=" MACSTR
4185                                " session=%x mac=" MACSTR
4186                                " dev_passwd_id=%d go=%s%s",
4187                                MAC2STR(dev), status, conncap,
4188                                adv_id, MAC2STR(adv_mac),
4189                                ses_id, MAC2STR(ses_mac),
4190                                passwd_id, go_ifname, feat_cap_str);
4191                 return;
4192         }
4193
4194         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4195                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4196
4197         if (persistent_go && !persistent_go->num_p2p_clients) {
4198                 /* remove empty persistent GO */
4199                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4200         }
4201
4202         if (conncap == P2PS_SETUP_CLIENT) {
4203                 char ssid_hex[32 * 2 + 1];
4204
4205                 if (group_ssid)
4206                         wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex),
4207                                          group_ssid, group_ssid_len);
4208                 else
4209                         ssid_hex[0] = '\0';
4210                 wpa_msg_global(wpa_s, MSG_INFO,
4211                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4212                                " status=%d conncap=%x"
4213                                " adv_id=%x adv_mac=" MACSTR
4214                                " session=%x mac=" MACSTR
4215                                " dev_passwd_id=%d join=" MACSTR "%s%s%s",
4216                                MAC2STR(dev), status, conncap,
4217                                adv_id, MAC2STR(adv_mac),
4218                                ses_id, MAC2STR(ses_mac),
4219                                passwd_id, MAC2STR(grp_mac), feat_cap_str,
4220                                group_ssid ? " group_ssid=" : "", ssid_hex);
4221         } else {
4222                 wpa_msg_global(wpa_s, MSG_INFO,
4223                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4224                                " status=%d conncap=%x"
4225                                " adv_id=%x adv_mac=" MACSTR
4226                                " session=%x mac=" MACSTR
4227                                " dev_passwd_id=%d%s",
4228                                MAC2STR(dev), status, conncap,
4229                                adv_id, MAC2STR(adv_mac),
4230                                ses_id, MAC2STR(ses_mac),
4231                                passwd_id, feat_cap_str);
4232         }
4233 }
4234
4235
4236 static int _wpas_p2p_in_progress(void *ctx)
4237 {
4238         struct wpa_supplicant *wpa_s = ctx;
4239         return wpas_p2p_in_progress(wpa_s);
4240 }
4241
4242
4243 static int wpas_prov_disc_resp_cb(void *ctx)
4244 {
4245         struct wpa_supplicant *wpa_s = ctx;
4246         struct wpa_ssid *persistent_go;
4247         unsigned int freq;
4248
4249         if (!wpa_s->global->pending_p2ps_group)
4250                 return 0;
4251
4252         freq = wpa_s->global->pending_p2ps_group_freq;
4253         wpa_s->global->pending_p2ps_group_freq = 0;
4254         wpa_s->global->pending_p2ps_group = 0;
4255
4256         if (wpas_p2p_get_go_group(wpa_s))
4257                 return 0;
4258         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4259
4260         if (persistent_go) {
4261                 wpas_p2p_group_add_persistent(
4262                         wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL,
4263                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4264                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4265         } else {
4266                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4267         }
4268
4269         return 1;
4270 }
4271
4272
4273 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4274                                        unsigned int *len,
4275                                        unsigned int *freq_list)
4276 {
4277         struct wpa_supplicant *wpa_s = ctx;
4278
4279         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4280                                           WPA_IF_P2P_CLIENT, len, freq_list);
4281 }
4282
4283
4284 /**
4285  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4286  * @global: Pointer to global data from wpa_supplicant_init()
4287  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4288  * Returns: 0 on success, -1 on failure
4289  */
4290 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4291 {
4292         struct p2p_config p2p;
4293         int i;
4294
4295         if (wpa_s->conf->p2p_disabled)
4296                 return 0;
4297
4298         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4299                 return 0;
4300
4301         if (global->p2p)
4302                 return 0;
4303
4304         os_memset(&p2p, 0, sizeof(p2p));
4305         p2p.cb_ctx = wpa_s;
4306         p2p.debug_print = wpas_p2p_debug_print;
4307         p2p.p2p_scan = wpas_p2p_scan;
4308         p2p.send_action = wpas_send_action;
4309         p2p.send_action_done = wpas_send_action_done;
4310         p2p.go_neg_completed = wpas_go_neg_completed;
4311         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4312         p2p.dev_found = wpas_dev_found;
4313         p2p.dev_lost = wpas_dev_lost;
4314         p2p.find_stopped = wpas_find_stopped;
4315         p2p.start_listen = wpas_start_listen;
4316         p2p.stop_listen = wpas_stop_listen;
4317         p2p.send_probe_resp = wpas_send_probe_resp;
4318         p2p.sd_request = wpas_sd_request;
4319         p2p.sd_response = wpas_sd_response;
4320         p2p.prov_disc_req = wpas_prov_disc_req;
4321         p2p.prov_disc_resp = wpas_prov_disc_resp;
4322         p2p.prov_disc_fail = wpas_prov_disc_fail;
4323         p2p.invitation_process = wpas_invitation_process;
4324         p2p.invitation_received = wpas_invitation_received;
4325         p2p.invitation_result = wpas_invitation_result;
4326         p2p.get_noa = wpas_get_noa;
4327         p2p.go_connected = wpas_go_connected;
4328         p2p.presence_resp = wpas_presence_resp;
4329         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4330         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4331         p2p.get_persistent_group = wpas_get_persistent_group;
4332         p2p.get_go_info = wpas_get_go_info;
4333         p2p.remove_stale_groups = wpas_remove_stale_groups;
4334         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4335         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4336         p2p.p2ps_group_capability = p2ps_group_capability;
4337         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4338
4339         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4340         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4341         p2p.dev_name = wpa_s->conf->device_name;
4342         p2p.manufacturer = wpa_s->conf->manufacturer;
4343         p2p.model_name = wpa_s->conf->model_name;
4344         p2p.model_number = wpa_s->conf->model_number;
4345         p2p.serial_number = wpa_s->conf->serial_number;
4346         if (wpa_s->wps) {
4347                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4348                 p2p.config_methods = wpa_s->wps->config_methods;
4349         }
4350
4351         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4352                 wpa_printf(MSG_ERROR,
4353                            "P2P: Failed to configure supported channel list");
4354                 return -1;
4355         }
4356
4357         if (wpa_s->conf->p2p_listen_reg_class &&
4358             wpa_s->conf->p2p_listen_channel) {
4359                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4360                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4361                 p2p.channel_forced = 1;
4362         } else {
4363                 /*
4364                  * Pick one of the social channels randomly as the listen
4365                  * channel.
4366                  */
4367                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4368                                                  &p2p.channel) != 0) {
4369                         wpa_printf(MSG_INFO,
4370                                    "P2P: No social channels supported by the driver - do not enable P2P");
4371                         return 0;
4372                 }
4373                 p2p.channel_forced = 0;
4374         }
4375         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4376                    p2p.reg_class, p2p.channel);
4377
4378         if (wpa_s->conf->p2p_oper_reg_class &&
4379             wpa_s->conf->p2p_oper_channel) {
4380                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4381                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4382                 p2p.cfg_op_channel = 1;
4383                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4384                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4385
4386         } else {
4387                 /*
4388                  * Use random operation channel from 2.4 GHz band social
4389                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4390                  * other preference is indicated.
4391                  */
4392                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4393                                                  &p2p.op_channel) != 0) {
4394                         wpa_printf(MSG_ERROR,
4395                                    "P2P: Failed to select random social channel as operation channel");
4396                         return -1;
4397                 }
4398                 p2p.cfg_op_channel = 0;
4399                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4400                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4401         }
4402
4403         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4404                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4405                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4406         }
4407
4408         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4409                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4410                 p2p.country[2] = 0x04;
4411         } else
4412                 os_memcpy(p2p.country, "XX\x04", 3);
4413
4414         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4415                   WPS_DEV_TYPE_LEN);
4416
4417         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4418         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4419                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4420
4421         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4422                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4423
4424         p2p.max_peers = 100;
4425
4426         if (wpa_s->conf->p2p_ssid_postfix) {
4427                 p2p.ssid_postfix_len =
4428                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4429                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4430                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4431                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4432                           p2p.ssid_postfix_len);
4433         }
4434
4435         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4436
4437         p2p.max_listen = wpa_s->max_remain_on_chan;
4438
4439         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4440             wpa_s->conf->p2p_passphrase_len <= 63)
4441                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4442         else
4443                 p2p.passphrase_len = 8;
4444
4445         global->p2p = p2p_init(&p2p);
4446         if (global->p2p == NULL)
4447                 return -1;
4448         global->p2p_init_wpa_s = wpa_s;
4449
4450         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4451                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4452                         continue;
4453                 p2p_add_wps_vendor_extension(
4454                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4455         }
4456
4457         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4458
4459         return 0;
4460 }
4461
4462
4463 /**
4464  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4465  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4466  *
4467  * This function deinitialize per-interface P2P data.
4468  */
4469 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4470 {
4471         if (wpa_s->driver && wpa_s->drv_priv)
4472                 wpa_drv_probe_req_report(wpa_s, 0);
4473
4474         if (wpa_s->go_params) {
4475                 /* Clear any stored provisioning info */
4476                 p2p_clear_provisioning_info(
4477                         wpa_s->global->p2p,
4478                         wpa_s->go_params->peer_device_addr);
4479         }
4480
4481         os_free(wpa_s->go_params);
4482         wpa_s->go_params = NULL;
4483         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4484         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4485         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4486         wpa_s->p2p_long_listen = 0;
4487         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4488         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4489         wpas_p2p_remove_pending_group_interface(wpa_s);
4490         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4491         wpas_p2p_listen_work_done(wpa_s);
4492         if (wpa_s->p2p_send_action_work) {
4493                 os_free(wpa_s->p2p_send_action_work->ctx);
4494                 radio_work_done(wpa_s->p2p_send_action_work);
4495                 wpa_s->p2p_send_action_work = NULL;
4496         }
4497         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4498
4499         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4500         wpa_s->p2p_oob_dev_pw = NULL;
4501
4502         os_free(wpa_s->p2p_group_common_freqs);
4503         wpa_s->p2p_group_common_freqs = NULL;
4504         wpa_s->p2p_group_common_freqs_num = 0;
4505
4506         /* TODO: remove group interface from the driver if this wpa_s instance
4507          * is on top of a P2P group interface */
4508 }
4509
4510
4511 /**
4512  * wpas_p2p_deinit_global - Deinitialize global P2P module
4513  * @global: Pointer to global data from wpa_supplicant_init()
4514  *
4515  * This function deinitializes the global (per device) P2P module.
4516  */
4517 static void wpas_p2p_deinit_global(struct wpa_global *global)
4518 {
4519         struct wpa_supplicant *wpa_s, *tmp;
4520
4521         wpa_s = global->ifaces;
4522
4523         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4524
4525         /* Remove remaining P2P group interfaces */
4526         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4527                 wpa_s = wpa_s->next;
4528         while (wpa_s) {
4529                 tmp = global->ifaces;
4530                 while (tmp &&
4531                        (tmp == wpa_s ||
4532                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4533                         tmp = tmp->next;
4534                 }
4535                 if (tmp == NULL)
4536                         break;
4537                 /* Disconnect from the P2P group and deinit the interface */
4538                 wpas_p2p_disconnect(tmp);
4539         }
4540
4541         /*
4542          * Deinit GO data on any possibly remaining interface (if main
4543          * interface is used as GO).
4544          */
4545         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4546                 if (wpa_s->ap_iface)
4547                         wpas_p2p_group_deinit(wpa_s);
4548         }
4549
4550         p2p_deinit(global->p2p);
4551         global->p2p = NULL;
4552         global->p2p_init_wpa_s = NULL;
4553 }
4554
4555
4556 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4557 {
4558         if (wpa_s->conf->p2p_no_group_iface)
4559                 return 0; /* separate interface disabled per configuration */
4560         if (wpa_s->drv_flags &
4561             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4562              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4563                 return 1; /* P2P group requires a new interface in every case
4564                            */
4565         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4566                 return 0; /* driver does not support concurrent operations */
4567         if (wpa_s->global->ifaces->next)
4568                 return 1; /* more that one interface already in use */
4569         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4570                 return 1; /* this interface is already in use */
4571         return 0;
4572 }
4573
4574
4575 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4576                                  const u8 *peer_addr,
4577                                  enum p2p_wps_method wps_method,
4578                                  int go_intent, const u8 *own_interface_addr,
4579                                  unsigned int force_freq, int persistent_group,
4580                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4581 {
4582         if (persistent_group && wpa_s->conf->persistent_reconnect)
4583                 persistent_group = 2;
4584
4585         /*
4586          * Increase GO config timeout if HT40 is used since it takes some time
4587          * to scan channels for coex purposes before the BSS can be started.
4588          */
4589         p2p_set_config_timeout(wpa_s->global->p2p,
4590                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4591
4592         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4593                            go_intent, own_interface_addr, force_freq,
4594                            persistent_group, ssid ? ssid->ssid : NULL,
4595                            ssid ? ssid->ssid_len : 0,
4596                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4597                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4598                            0);
4599 }
4600
4601
4602 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4603                                 const u8 *peer_addr,
4604                                 enum p2p_wps_method wps_method,
4605                                 int go_intent, const u8 *own_interface_addr,
4606                                 unsigned int force_freq, int persistent_group,
4607                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4608 {
4609         if (persistent_group && wpa_s->conf->persistent_reconnect)
4610                 persistent_group = 2;
4611
4612         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4613                              go_intent, own_interface_addr, force_freq,
4614                              persistent_group, ssid ? ssid->ssid : NULL,
4615                              ssid ? ssid->ssid_len : 0, pref_freq,
4616                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4617                              0);
4618 }
4619
4620
4621 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4622 {
4623         wpa_s->p2p_join_scan_count++;
4624         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4625                    wpa_s->p2p_join_scan_count);
4626         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4627                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4628                            " for join operationg - stop join attempt",
4629                            MAC2STR(wpa_s->pending_join_iface_addr));
4630                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4631                 if (wpa_s->p2p_auto_pd) {
4632                         wpa_s->p2p_auto_pd = 0;
4633                         wpa_msg_global(wpa_s, MSG_INFO,
4634                                        P2P_EVENT_PROV_DISC_FAILURE
4635                                        " p2p_dev_addr=" MACSTR " status=N/A",
4636                                        MAC2STR(wpa_s->pending_join_dev_addr));
4637                         return;
4638                 }
4639                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4640                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4641                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4642         }
4643 }
4644
4645
4646 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4647 {
4648         int res;
4649         unsigned int num, i;
4650         struct wpa_used_freq_data *freqs;
4651
4652         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4653                 /* Multiple channels are supported and not all are in use */
4654                 return 0;
4655         }
4656
4657         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4658                           sizeof(struct wpa_used_freq_data));
4659         if (!freqs)
4660                 return 1;
4661
4662         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4663                                         wpa_s->num_multichan_concurrent);
4664
4665         for (i = 0; i < num; i++) {
4666                 if (freqs[i].freq == freq) {
4667                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4668                                    freq);
4669                         res = 0;
4670                         goto exit_free;
4671                 }
4672         }
4673
4674         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4675         res = 1;
4676
4677 exit_free:
4678         os_free(freqs);
4679         return res;
4680 }
4681
4682
4683 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4684                             const u8 *peer_dev_addr)
4685 {
4686         struct wpa_bss *bss;
4687         int updated;
4688
4689         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4690         if (bss == NULL)
4691                 return -1;
4692         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4693                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4694                            "last scan");
4695                 return 0;
4696         }
4697
4698         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4699                                     &bss->last_update);
4700         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4701                    "%ld.%06ld (%supdated in last scan)",
4702                    bss->last_update.sec, bss->last_update.usec,
4703                    updated ? "": "not ");
4704
4705         return updated;
4706 }
4707
4708
4709 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4710                                    struct wpa_scan_results *scan_res)
4711 {
4712         struct wpa_bss *bss = NULL;
4713         int freq;
4714         u8 iface_addr[ETH_ALEN];
4715
4716         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4717
4718         if (wpa_s->global->p2p_disabled)
4719                 return;
4720
4721         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4722                    scan_res ? (int) scan_res->num : -1,
4723                    wpa_s->p2p_auto_join ? "auto_" : "");
4724
4725         if (scan_res)
4726                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4727
4728         if (wpa_s->p2p_auto_pd) {
4729                 int join = wpas_p2p_peer_go(wpa_s,
4730                                             wpa_s->pending_join_dev_addr);
4731                 if (join == 0 &&
4732                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4733                         wpa_s->auto_pd_scan_retry++;
4734                         bss = wpa_bss_get_bssid_latest(
4735                                 wpa_s, wpa_s->pending_join_dev_addr);
4736                         if (bss) {
4737                                 freq = bss->freq;
4738                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4739                                            "the peer " MACSTR " at %d MHz",
4740                                            wpa_s->auto_pd_scan_retry,
4741                                            MAC2STR(wpa_s->
4742                                                    pending_join_dev_addr),
4743                                            freq);
4744                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4745                                 return;
4746                         }
4747                 }
4748
4749                 if (join < 0)
4750                         join = 0;
4751
4752                 wpa_s->p2p_auto_pd = 0;
4753                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4754                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4755                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4756                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4757                                       wpa_s->pending_join_dev_addr, NULL,
4758                                       wpa_s->pending_pd_config_methods, join,
4759                                       0, wpa_s->user_initiated_pd) < 0) {
4760                         wpa_s->p2p_auto_pd = 0;
4761                         wpa_msg_global(wpa_s, MSG_INFO,
4762                                        P2P_EVENT_PROV_DISC_FAILURE
4763                                        " p2p_dev_addr=" MACSTR " status=N/A",
4764                                        MAC2STR(wpa_s->pending_join_dev_addr));
4765                 }
4766                 return;
4767         }
4768
4769         if (wpa_s->p2p_auto_join) {
4770                 int join = wpas_p2p_peer_go(wpa_s,
4771                                             wpa_s->pending_join_dev_addr);
4772                 if (join < 0) {
4773                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4774                                    "running a GO -> use GO Negotiation");
4775                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4776                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4777                                        "reason=peer-not-running-GO");
4778                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4779                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4780                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4781                                          wpa_s->p2p_go_intent,
4782                                          wpa_s->p2p_connect_freq,
4783                                          wpa_s->p2p_go_vht_center_freq2,
4784                                          wpa_s->p2p_persistent_id,
4785                                          wpa_s->p2p_pd_before_go_neg,
4786                                          wpa_s->p2p_go_ht40,
4787                                          wpa_s->p2p_go_vht,
4788                                          wpa_s->p2p_go_max_oper_chwidth,
4789                                          NULL, 0);
4790                         return;
4791                 }
4792
4793                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4794                            "try to join the group", join ? "" :
4795                            " in older scan");
4796                 if (!join) {
4797                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4798                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4799                         wpa_s->p2p_fallback_to_go_neg = 1;
4800                 }
4801         }
4802
4803         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4804                                  wpa_s->pending_join_iface_addr);
4805         if (freq < 0 &&
4806             p2p_get_interface_addr(wpa_s->global->p2p,
4807                                    wpa_s->pending_join_dev_addr,
4808                                    iface_addr) == 0 &&
4809             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4810             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4811                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4812                            "address for join from " MACSTR " to " MACSTR
4813                            " based on newly discovered P2P peer entry",
4814                            MAC2STR(wpa_s->pending_join_iface_addr),
4815                            MAC2STR(iface_addr));
4816                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4817                           ETH_ALEN);
4818
4819                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4820                                          wpa_s->pending_join_iface_addr);
4821         }
4822         if (freq >= 0) {
4823                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4824                            "from P2P peer table: %d MHz", freq);
4825         }
4826         if (wpa_s->p2p_join_ssid_len) {
4827                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4828                            MACSTR " and SSID %s",
4829                            MAC2STR(wpa_s->pending_join_iface_addr),
4830                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4831                                         wpa_s->p2p_join_ssid_len));
4832                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4833                                   wpa_s->p2p_join_ssid,
4834                                   wpa_s->p2p_join_ssid_len);
4835         } else if (!bss) {
4836                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4837                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4838                 bss = wpa_bss_get_bssid_latest(wpa_s,
4839                                                wpa_s->pending_join_iface_addr);
4840         }
4841         if (bss) {
4842                 u8 dev_addr[ETH_ALEN];
4843
4844                 freq = bss->freq;
4845                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4846                            "from BSS table: %d MHz (SSID %s)", freq,
4847                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4848                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4849                                        dev_addr) == 0 &&
4850                     os_memcmp(wpa_s->pending_join_dev_addr,
4851                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4852                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4853                               ETH_ALEN) != 0) {
4854                         wpa_printf(MSG_DEBUG,
4855                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4856                                    MAC2STR(dev_addr),
4857                                    MAC2STR(wpa_s->pending_join_dev_addr));
4858                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4859                                   ETH_ALEN);
4860                 }
4861         }
4862         if (freq > 0) {
4863                 u16 method;
4864
4865                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4866                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4867                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4868                                        "reason=FREQ_CONFLICT");
4869                         wpas_notify_p2p_group_formation_failure(
4870                                 wpa_s, "FREQ_CONFLICT");
4871                         return;
4872                 }
4873
4874                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4875                            "prior to joining an existing group (GO " MACSTR
4876                            " freq=%u MHz)",
4877                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4878                 wpa_s->pending_pd_before_join = 1;
4879
4880                 switch (wpa_s->pending_join_wps_method) {
4881                 case WPS_PIN_DISPLAY:
4882                         method = WPS_CONFIG_KEYPAD;
4883                         break;
4884                 case WPS_PIN_KEYPAD:
4885                         method = WPS_CONFIG_DISPLAY;
4886                         break;
4887                 case WPS_PBC:
4888                         method = WPS_CONFIG_PUSHBUTTON;
4889                         break;
4890                 case WPS_P2PS:
4891                         method = WPS_CONFIG_P2PS;
4892                         break;
4893                 default:
4894                         method = 0;
4895                         break;
4896                 }
4897
4898                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4899                                                wpa_s->pending_join_dev_addr) ==
4900                      method)) {
4901                         /*
4902                          * We have already performed provision discovery for
4903                          * joining the group. Proceed directly to join
4904                          * operation without duplicated provision discovery. */
4905                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4906                                    "with " MACSTR " already done - proceed to "
4907                                    "join",
4908                                    MAC2STR(wpa_s->pending_join_dev_addr));
4909                         wpa_s->pending_pd_before_join = 0;
4910                         goto start;
4911                 }
4912
4913                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4914                                       wpa_s->pending_join_dev_addr,
4915                                       NULL, method, 1,
4916                                       freq, wpa_s->user_initiated_pd) < 0) {
4917                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4918                                    "Discovery Request before joining an "
4919                                    "existing group");
4920                         wpa_s->pending_pd_before_join = 0;
4921                         goto start;
4922                 }
4923                 return;
4924         }
4925
4926         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4927         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4928         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4929         wpas_p2p_check_join_scan_limit(wpa_s);
4930         return;
4931
4932 start:
4933         /* Start join operation immediately */
4934         wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid,
4935                             wpa_s->p2p_join_ssid_len);
4936 }
4937
4938
4939 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4940                                    const u8 *ssid, size_t ssid_len)
4941 {
4942         int ret;
4943         struct wpa_driver_scan_params params;
4944         struct wpabuf *wps_ie, *ies;
4945         size_t ielen;
4946         int freqs[2] = { 0, 0 };
4947         unsigned int bands;
4948
4949         os_memset(&params, 0, sizeof(params));
4950
4951         /* P2P Wildcard SSID */
4952         params.num_ssids = 1;
4953         if (ssid && ssid_len) {
4954                 params.ssids[0].ssid = ssid;
4955                 params.ssids[0].ssid_len = ssid_len;
4956                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4957                 wpa_s->p2p_join_ssid_len = ssid_len;
4958         } else {
4959                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4960                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4961                 wpa_s->p2p_join_ssid_len = 0;
4962         }
4963
4964         wpa_s->wps->dev.p2p = 1;
4965         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4966                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4967                                         NULL);
4968         if (wps_ie == NULL) {
4969                 wpas_p2p_scan_res_join(wpa_s, NULL);
4970                 return;
4971         }
4972
4973         if (!freq) {
4974                 int oper_freq;
4975                 /*
4976                  * If freq is not provided, check the operating freq of the GO
4977                  * and use a single channel scan on if possible.
4978                  */
4979                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4980                                               wpa_s->pending_join_iface_addr);
4981                 if (oper_freq > 0)
4982                         freq = oper_freq;
4983         }
4984         if (freq > 0) {
4985                 freqs[0] = freq;
4986                 params.freqs = freqs;
4987         }
4988
4989         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4990         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4991         if (ies == NULL) {
4992                 wpabuf_free(wps_ie);
4993                 wpas_p2p_scan_res_join(wpa_s, NULL);
4994                 return;
4995         }
4996         wpabuf_put_buf(ies, wps_ie);
4997         wpabuf_free(wps_ie);
4998
4999         bands = wpas_get_bands(wpa_s, freqs);
5000         p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
5001
5002         params.p2p_probe = 1;
5003         params.extra_ies = wpabuf_head(ies);
5004         params.extra_ies_len = wpabuf_len(ies);
5005
5006         /*
5007          * Run a scan to update BSS table and start Provision Discovery once
5008          * the new scan results become available.
5009          */
5010         ret = wpa_drv_scan(wpa_s, &params);
5011         if (!ret) {
5012                 os_get_reltime(&wpa_s->scan_trigger_time);
5013                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
5014                 wpa_s->own_scan_requested = 1;
5015         }
5016
5017         wpabuf_free(ies);
5018
5019         if (ret) {
5020                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5021                            "try again later");
5022                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5023                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5024                 wpas_p2p_check_join_scan_limit(wpa_s);
5025         }
5026 }
5027
5028
5029 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5030 {
5031         struct wpa_supplicant *wpa_s = eloop_ctx;
5032         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5033 }
5034
5035
5036 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5037                          const u8 *dev_addr, enum p2p_wps_method wps_method,
5038                          int auto_join, int op_freq,
5039                          const u8 *ssid, size_t ssid_len)
5040 {
5041         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5042                    MACSTR " dev " MACSTR " op_freq=%d)%s",
5043                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5044                    auto_join ? " (auto_join)" : "");
5045         if (ssid && ssid_len) {
5046                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5047                            wpa_ssid_txt(ssid, ssid_len));
5048         }
5049
5050         wpa_s->p2p_auto_pd = 0;
5051         wpa_s->p2p_auto_join = !!auto_join;
5052         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5053         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5054         wpa_s->pending_join_wps_method = wps_method;
5055
5056         /* Make sure we are not running find during connection establishment */
5057         wpas_p2p_stop_find(wpa_s);
5058
5059         wpa_s->p2p_join_scan_count = 0;
5060         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5061         return 0;
5062 }
5063
5064
5065 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5066                                const u8 *ssid, size_t ssid_len)
5067 {
5068         struct wpa_supplicant *group;
5069         struct p2p_go_neg_results res;
5070         struct wpa_bss *bss;
5071
5072         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5073         if (group == NULL)
5074                 return -1;
5075         if (group != wpa_s) {
5076                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5077                           sizeof(group->p2p_pin));
5078                 group->p2p_wps_method = wpa_s->p2p_wps_method;
5079         } else {
5080                 /*
5081                  * Need to mark the current interface for p2p_group_formation
5082                  * when a separate group interface is not used. This is needed
5083                  * to allow p2p_cancel stop a pending p2p_connect-join.
5084                  * wpas_p2p_init_group_interface() addresses this for the case
5085                  * where a separate group interface is used.
5086                  */
5087                 wpa_s->global->p2p_group_formation = wpa_s;
5088         }
5089
5090         group->p2p_in_provisioning = 1;
5091         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5092
5093         os_memset(&res, 0, sizeof(res));
5094         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5095         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5096                   ETH_ALEN);
5097         res.wps_method = wpa_s->pending_join_wps_method;
5098         if (freq && ssid && ssid_len) {
5099                 res.freq = freq;
5100                 res.ssid_len = ssid_len;
5101                 os_memcpy(res.ssid, ssid, ssid_len);
5102         } else {
5103                 if (ssid && ssid_len) {
5104                         bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
5105                                           ssid, ssid_len);
5106                 } else {
5107                         bss = wpa_bss_get_bssid_latest(
5108                                 wpa_s, wpa_s->pending_join_iface_addr);
5109                 }
5110                 if (bss) {
5111                         res.freq = bss->freq;
5112                         res.ssid_len = bss->ssid_len;
5113                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5114                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5115                                    bss->freq,
5116                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
5117                 } else if (ssid && ssid_len) {
5118                         res.ssid_len = ssid_len;
5119                         os_memcpy(res.ssid, ssid, ssid_len);
5120                         wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)",
5121                                    wpa_ssid_txt(ssid, ssid_len));
5122                 }
5123         }
5124
5125         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5126                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5127                            "starting client");
5128                 wpa_drv_cancel_remain_on_channel(wpa_s);
5129                 wpa_s->off_channel_freq = 0;
5130                 wpa_s->roc_waiting_drv_freq = 0;
5131         }
5132         wpas_start_wps_enrollee(group, &res);
5133
5134         /*
5135          * Allow a longer timeout for join-a-running-group than normal 15
5136          * second group formation timeout since the GO may not have authorized
5137          * our connection yet.
5138          */
5139         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5140         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5141                                wpa_s, NULL);
5142
5143         return 0;
5144 }
5145
5146
5147 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5148                                 int *force_freq, int *pref_freq, int go,
5149                                 unsigned int *pref_freq_list,
5150                                 unsigned int *num_pref_freq)
5151 {
5152         struct wpa_used_freq_data *freqs;
5153         int res, best_freq, num_unused;
5154         unsigned int freq_in_use = 0, num, i, max_pref_freq;
5155
5156         max_pref_freq = *num_pref_freq;
5157         *num_pref_freq = 0;
5158
5159         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5160                           sizeof(struct wpa_used_freq_data));
5161         if (!freqs)
5162                 return -1;
5163
5164         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5165                                         wpa_s->num_multichan_concurrent);
5166
5167         /*
5168          * It is possible that the total number of used frequencies is bigger
5169          * than the number of frequencies used for P2P, so get the system wide
5170          * number of unused frequencies.
5171          */
5172         num_unused = wpas_p2p_num_unused_channels(wpa_s);
5173
5174         wpa_printf(MSG_DEBUG,
5175                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5176                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
5177
5178         if (freq > 0) {
5179                 int ret;
5180                 if (go)
5181                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5182                 else
5183                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5184                 if (!ret) {
5185                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5186                             ieee80211_is_dfs(freq)) {
5187                                 /*
5188                                  * If freq is a DFS channel and DFS is offloaded
5189                                  * to the driver, allow P2P GO to use it.
5190                                  */
5191                                 wpa_printf(MSG_DEBUG,
5192                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5193                                            freq);
5194                         } else {
5195                                 wpa_printf(MSG_DEBUG,
5196                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5197                                            freq);
5198                                 res = -3;
5199                                 goto exit_free;
5200                         }
5201                 }
5202
5203                 for (i = 0; i < num; i++) {
5204                         if (freqs[i].freq == freq)
5205                                 freq_in_use = 1;
5206                 }
5207
5208                 if (num_unused <= 0 && !freq_in_use) {
5209                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5210                                    freq);
5211                         res = -2;
5212                         goto exit_free;
5213                 }
5214                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5215                            "requested channel (%u MHz)", freq);
5216                 *force_freq = freq;
5217                 goto exit_ok;
5218         }
5219
5220         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5221
5222         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5223                 enum wpa_driver_if_type iface_type;
5224
5225                 if (go)
5226                         iface_type = WPA_IF_P2P_GO;
5227                 else
5228                         iface_type = WPA_IF_P2P_CLIENT;
5229
5230                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5231                            best_freq, go);
5232
5233                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5234                                                  &max_pref_freq,
5235                                                  pref_freq_list);
5236                 if (!res && max_pref_freq > 0) {
5237                         *num_pref_freq = max_pref_freq;
5238                         i = 0;
5239                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5240                                                         pref_freq_list[i]) &&
5241                                i < *num_pref_freq) {
5242                                 wpa_printf(MSG_DEBUG,
5243                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5244                                            i, pref_freq_list[i]);
5245                                 i++;
5246                         }
5247                         if (i != *num_pref_freq) {
5248                                 best_freq = pref_freq_list[i];
5249                                 wpa_printf(MSG_DEBUG,
5250                                            "P2P: Using preferred_freq_list[%d]=%d",
5251                                            i, best_freq);
5252                         } else {
5253                                 wpa_printf(MSG_DEBUG,
5254                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5255                                 *num_pref_freq = 0;
5256                         }
5257                 } else {
5258                         wpa_printf(MSG_DEBUG,
5259                                    "P2P: No preferred frequency list available");
5260                 }
5261         }
5262
5263         /* We have a candidate frequency to use */
5264         if (best_freq > 0) {
5265                 if (*pref_freq == 0 && num_unused > 0) {
5266                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5267                                    best_freq);
5268                         *pref_freq = best_freq;
5269                 } else {
5270                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5271                                    best_freq);
5272                         *force_freq = best_freq;
5273                 }
5274         } else if (num_unused > 0) {
5275                 wpa_printf(MSG_DEBUG,
5276                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5277                 *force_freq = 0;
5278         } else {
5279                 wpa_printf(MSG_DEBUG,
5280                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5281                 res = -2;
5282                 goto exit_free;
5283         }
5284
5285 exit_ok:
5286         res = 0;
5287 exit_free:
5288         os_free(freqs);
5289         return res;
5290 }
5291
5292
5293 /**
5294  * wpas_p2p_connect - Request P2P Group Formation to be started
5295  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5296  * @peer_addr: Address of the peer P2P Device
5297  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5298  * @persistent_group: Whether to create a persistent group
5299  * @auto_join: Whether to select join vs. GO Negotiation automatically
5300  * @join: Whether to join an existing group (as a client) instead of starting
5301  *      Group Owner negotiation; @peer_addr is BSSID in that case
5302  * @auth: Whether to only authorize the connection instead of doing that and
5303  *      initiating Group Owner negotiation
5304  * @go_intent: GO Intent or -1 to use default
5305  * @freq: Frequency for the group or 0 for auto-selection
5306  * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5307  * @persistent_id: Persistent group credentials to use for forcing GO
5308  *      parameters or -1 to generate new values (SSID/passphrase)
5309  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5310  *      interoperability workaround when initiating group formation
5311  * @ht40: Start GO with 40 MHz channel width
5312  * @vht:  Start GO with VHT support
5313  * @vht_chwidth: Channel width supported by GO operating with VHT support
5314  *      (VHT_CHANWIDTH_*).
5315  * @group_ssid: Specific Group SSID for join or %NULL if not set
5316  * @group_ssid_len: Length of @group_ssid in octets
5317  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5318  *      failure, -2 on failure due to channel not currently available,
5319  *      -3 if forced channel is not supported
5320  */
5321 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5322                      const char *pin, enum p2p_wps_method wps_method,
5323                      int persistent_group, int auto_join, int join, int auth,
5324                      int go_intent, int freq, unsigned int vht_center_freq2,
5325                      int persistent_id, int pd, int ht40, int vht,
5326                      unsigned int vht_chwidth, const u8 *group_ssid,
5327                      size_t group_ssid_len)
5328 {
5329         int force_freq = 0, pref_freq = 0;
5330         int ret = 0, res;
5331         enum wpa_driver_if_type iftype;
5332         const u8 *if_addr;
5333         struct wpa_ssid *ssid = NULL;
5334         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5335
5336         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5337                 return -1;
5338
5339         if (persistent_id >= 0) {
5340                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5341                 if (ssid == NULL || ssid->disabled != 2 ||
5342                     ssid->mode != WPAS_MODE_P2P_GO)
5343                         return -1;
5344         }
5345
5346         os_free(wpa_s->global->add_psk);
5347         wpa_s->global->add_psk = NULL;
5348
5349         wpa_s->global->p2p_fail_on_wps_complete = 0;
5350         wpa_s->global->pending_p2ps_group = 0;
5351         wpa_s->global->pending_p2ps_group_freq = 0;
5352         wpa_s->p2ps_method_config_any = 0;
5353
5354         if (go_intent < 0)
5355                 go_intent = wpa_s->conf->p2p_go_intent;
5356
5357         if (!auth)
5358                 wpa_s->p2p_long_listen = 0;
5359
5360         wpa_s->p2p_wps_method = wps_method;
5361         wpa_s->p2p_persistent_group = !!persistent_group;
5362         wpa_s->p2p_persistent_id = persistent_id;
5363         wpa_s->p2p_go_intent = go_intent;
5364         wpa_s->p2p_connect_freq = freq;
5365         wpa_s->p2p_fallback_to_go_neg = 0;
5366         wpa_s->p2p_pd_before_go_neg = !!pd;
5367         wpa_s->p2p_go_ht40 = !!ht40;
5368         wpa_s->p2p_go_vht = !!vht;
5369         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5370         wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5371
5372         if (pin)
5373                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5374         else if (wps_method == WPS_PIN_DISPLAY) {
5375                 if (wps_generate_pin((unsigned int *) &ret) < 0)
5376                         return -1;
5377                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5378                                   "%08d", ret);
5379                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5380                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5381                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5382                            wpa_s->p2p_pin);
5383         } else if (wps_method == WPS_P2PS) {
5384                 /* Force the P2Ps default PIN to be used */
5385                 os_strlcpy(wpa_s->p2p_pin, "12345670", sizeof(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             !ssid->p2p_group)
6323                 return NULL;
6324
6325         cfg = os_zalloc(sizeof(*cfg));
6326         if (cfg == NULL)
6327                 return NULL;
6328
6329         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6330                 cfg->persistent_group = 2;
6331         else if (ssid->p2p_persistent_group)
6332                 cfg->persistent_group = 1;
6333         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6334         if (wpa_s->max_stations &&
6335             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6336                 cfg->max_clients = wpa_s->max_stations;
6337         else
6338                 cfg->max_clients = wpa_s->conf->max_num_sta;
6339         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6340         cfg->ssid_len = ssid->ssid_len;
6341         cfg->freq = ssid->frequency;
6342         cfg->cb_ctx = wpa_s;
6343         cfg->ie_update = wpas_p2p_ie_update;
6344         cfg->idle_update = wpas_p2p_idle_update;
6345         cfg->ip_addr_alloc = WPA_GET_BE32(wpa_s->p2pdev->conf->ip_addr_start)
6346                 != 0;
6347
6348         group = p2p_group_init(wpa_s->global->p2p, cfg);
6349         if (group == NULL)
6350                 os_free(cfg);
6351         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6352                 p2p_group_notif_formation_done(group);
6353         wpa_s->p2p_group = group;
6354         return group;
6355 }
6356
6357
6358 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6359                           int registrar)
6360 {
6361         struct wpa_ssid *ssid = wpa_s->current_ssid;
6362
6363         if (!wpa_s->p2p_in_provisioning) {
6364                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6365                            "provisioning not in progress");
6366                 return;
6367         }
6368
6369         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6370                 u8 go_dev_addr[ETH_ALEN];
6371                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6372                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6373                                           ssid->ssid_len);
6374                 /* Clear any stored provisioning info */
6375                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6376         }
6377
6378         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6379                              NULL);
6380         wpa_s->p2p_go_group_formation_completed = 1;
6381         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6382                 /*
6383                  * Use a separate timeout for initial data connection to
6384                  * complete to allow the group to be removed automatically if
6385                  * something goes wrong in this step before the P2P group idle
6386                  * timeout mechanism is taken into use.
6387                  */
6388                 wpa_dbg(wpa_s, MSG_DEBUG,
6389                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6390                         P2P_MAX_INITIAL_CONN_WAIT);
6391                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6392                                        wpas_p2p_group_formation_timeout,
6393                                        wpa_s->p2pdev, NULL);
6394                 /* Complete group formation on successful data connection. */
6395                 wpa_s->p2p_go_group_formation_completed = 0;
6396         } else if (ssid) {
6397                 /*
6398                  * Use a separate timeout for initial data connection to
6399                  * complete to allow the group to be removed automatically if
6400                  * the client does not complete data connection successfully.
6401                  */
6402                 wpa_dbg(wpa_s, MSG_DEBUG,
6403                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6404                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6405                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6406                                        wpas_p2p_group_formation_timeout,
6407                                        wpa_s->p2pdev, NULL);
6408                 /*
6409                  * Complete group formation on first successful data connection
6410                  */
6411                 wpa_s->p2p_go_group_formation_completed = 0;
6412         }
6413         if (wpa_s->global->p2p)
6414                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6415         wpas_group_formation_completed(wpa_s, 1, 0);
6416 }
6417
6418
6419 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6420                          struct wps_event_fail *fail)
6421 {
6422         if (!wpa_s->p2p_in_provisioning) {
6423                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6424                            "provisioning not in progress");
6425                 return;
6426         }
6427
6428         if (wpa_s->go_params) {
6429                 p2p_clear_provisioning_info(
6430                         wpa_s->global->p2p,
6431                         wpa_s->go_params->peer_device_addr);
6432         }
6433
6434         wpas_notify_p2p_wps_failed(wpa_s, fail);
6435
6436         if (wpa_s == wpa_s->global->p2p_group_formation) {
6437                 /*
6438                  * Allow some time for the failed WPS negotiation exchange to
6439                  * complete, but remove the group since group formation cannot
6440                  * succeed after provisioning failure.
6441                  */
6442                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6443                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6444                 eloop_deplete_timeout(0, 50000,
6445                                       wpas_p2p_group_formation_timeout,
6446                                       wpa_s->p2pdev, NULL);
6447         }
6448 }
6449
6450
6451 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6452 {
6453         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6454             !wpa_s->p2p_in_provisioning)
6455                 return 0;
6456
6457         wpas_p2p_grpform_fail_after_wps(wpa_s);
6458
6459         return 1;
6460 }
6461
6462
6463 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6464                        const char *config_method,
6465                        enum wpas_p2p_prov_disc_use use,
6466                        struct p2ps_provision *p2ps_prov)
6467 {
6468         u16 config_methods;
6469
6470         wpa_s->global->pending_p2ps_group = 0;
6471         wpa_s->global->pending_p2ps_group_freq = 0;
6472         wpa_s->p2p_fallback_to_go_neg = 0;
6473         wpa_s->pending_pd_use = NORMAL_PD;
6474         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6475                 p2ps_prov->conncap = p2ps_group_capability(
6476                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6477                         &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6478
6479                 wpa_printf(MSG_DEBUG,
6480                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6481                            __func__, p2ps_prov->conncap,
6482                            p2ps_prov->adv_id, p2ps_prov->conncap,
6483                            p2ps_prov->status, p2ps_prov->info);
6484
6485                 config_methods = 0;
6486         } else if (os_strncmp(config_method, "display", 7) == 0)
6487                 config_methods = WPS_CONFIG_DISPLAY;
6488         else if (os_strncmp(config_method, "keypad", 6) == 0)
6489                 config_methods = WPS_CONFIG_KEYPAD;
6490         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6491                  os_strncmp(config_method, "pushbutton", 10) == 0)
6492                 config_methods = WPS_CONFIG_PUSHBUTTON;
6493         else {
6494                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6495                 os_free(p2ps_prov);
6496                 return -1;
6497         }
6498
6499         if (use == WPAS_P2P_PD_AUTO) {
6500                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6501                 wpa_s->pending_pd_config_methods = config_methods;
6502                 wpa_s->p2p_auto_pd = 1;
6503                 wpa_s->p2p_auto_join = 0;
6504                 wpa_s->pending_pd_before_join = 0;
6505                 wpa_s->auto_pd_scan_retry = 0;
6506                 wpas_p2p_stop_find(wpa_s);
6507                 wpa_s->p2p_join_scan_count = 0;
6508                 os_get_reltime(&wpa_s->p2p_auto_started);
6509                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6510                            wpa_s->p2p_auto_started.sec,
6511                            wpa_s->p2p_auto_started.usec);
6512                 wpas_p2p_join_scan(wpa_s, NULL);
6513                 return 0;
6514         }
6515
6516         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6517                 os_free(p2ps_prov);
6518                 return -1;
6519         }
6520
6521         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6522                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6523                                  0, 1);
6524 }
6525
6526
6527 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6528                               char *end)
6529 {
6530         return p2p_scan_result_text(ies, ies_len, buf, end);
6531 }
6532
6533
6534 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6535 {
6536         if (!offchannel_pending_action_tx(wpa_s))
6537                 return;
6538
6539         if (wpa_s->p2p_send_action_work) {
6540                 wpas_p2p_free_send_action_work(wpa_s);
6541                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
6542                                      wpa_s, NULL);
6543                 offchannel_send_action_done(wpa_s);
6544         }
6545
6546         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6547                    "operation request");
6548         offchannel_clear_pending_action_tx(wpa_s);
6549 }
6550
6551
6552 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6553                   enum p2p_discovery_type type,
6554                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6555                   const u8 *dev_id, unsigned int search_delay,
6556                   u8 seek_cnt, const char **seek_string, int freq)
6557 {
6558         wpas_p2p_clear_pending_action_tx(wpa_s);
6559         wpa_s->p2p_long_listen = 0;
6560
6561         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6562             wpa_s->p2p_in_provisioning)
6563                 return -1;
6564
6565         wpa_supplicant_cancel_sched_scan(wpa_s);
6566
6567         return p2p_find(wpa_s->global->p2p, timeout, type,
6568                         num_req_dev_types, req_dev_types, dev_id,
6569                         search_delay, seek_cnt, seek_string, freq);
6570 }
6571
6572
6573 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6574                                             struct wpa_scan_results *scan_res)
6575 {
6576         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6577
6578         if (wpa_s->p2p_scan_work) {
6579                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6580                 wpa_s->p2p_scan_work = NULL;
6581                 radio_work_done(work);
6582         }
6583
6584         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6585                 return;
6586
6587         /*
6588          * Indicate that results have been processed so that the P2P module can
6589          * continue pending tasks.
6590          */
6591         p2p_scan_res_handled(wpa_s->global->p2p);
6592 }
6593
6594
6595 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6596 {
6597         wpas_p2p_clear_pending_action_tx(wpa_s);
6598         wpa_s->p2p_long_listen = 0;
6599         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6600         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6601
6602         if (wpa_s->global->p2p)
6603                 p2p_stop_find(wpa_s->global->p2p);
6604
6605         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6606                 wpa_printf(MSG_DEBUG,
6607                            "P2P: Do not consider the scan results after stop_find");
6608                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6609         }
6610 }
6611
6612
6613 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6614 {
6615         wpas_p2p_stop_find_oper(wpa_s);
6616         if (!wpa_s->global->pending_group_iface_for_p2ps)
6617                 wpas_p2p_remove_pending_group_interface(wpa_s);
6618 }
6619
6620
6621 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6622 {
6623         struct wpa_supplicant *wpa_s = eloop_ctx;
6624         wpa_s->p2p_long_listen = 0;
6625 }
6626
6627
6628 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6629 {
6630         int res;
6631
6632         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6633                 return -1;
6634
6635         if (wpa_s->p2p_lo_started) {
6636                 wpa_printf(MSG_DEBUG,
6637                         "P2P: Cannot start P2P listen, it is offloaded");
6638                 return -1;
6639         }
6640
6641         wpa_supplicant_cancel_sched_scan(wpa_s);
6642         wpas_p2p_clear_pending_action_tx(wpa_s);
6643
6644         if (timeout == 0) {
6645                 /*
6646                  * This is a request for unlimited Listen state. However, at
6647                  * least for now, this is mapped to a Listen state for one
6648                  * hour.
6649                  */
6650                 timeout = 3600;
6651         }
6652         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6653         wpa_s->p2p_long_listen = 0;
6654
6655         /*
6656          * Stop previous find/listen operation to avoid trying to request a new
6657          * remain-on-channel operation while the driver is still running the
6658          * previous one.
6659          */
6660         if (wpa_s->global->p2p)
6661                 p2p_stop_find(wpa_s->global->p2p);
6662
6663         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6664         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6665                 wpa_s->p2p_long_listen = timeout * 1000;
6666                 eloop_register_timeout(timeout, 0,
6667                                        wpas_p2p_long_listen_timeout,
6668                                        wpa_s, NULL);
6669         }
6670
6671         return res;
6672 }
6673
6674
6675 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6676                           u8 *buf, size_t len, int p2p_group)
6677 {
6678         struct wpabuf *p2p_ie;
6679         int ret;
6680
6681         if (wpa_s->global->p2p_disabled)
6682                 return -1;
6683         /*
6684          * Advertize mandatory cross connection capability even on
6685          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6686          */
6687         if (wpa_s->conf->p2p_disabled && p2p_group)
6688                 return -1;
6689         if (wpa_s->global->p2p == NULL)
6690                 return -1;
6691         if (bss == NULL)
6692                 return -1;
6693
6694         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6695         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6696                                p2p_group, p2p_ie);
6697         wpabuf_free(p2p_ie);
6698
6699         return ret;
6700 }
6701
6702
6703 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6704                           const u8 *dst, const u8 *bssid,
6705                           const u8 *ie, size_t ie_len,
6706                           unsigned int rx_freq, int ssi_signal)
6707 {
6708         if (wpa_s->global->p2p_disabled)
6709                 return 0;
6710         if (wpa_s->global->p2p == NULL)
6711                 return 0;
6712
6713         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6714                                  ie, ie_len, rx_freq, wpa_s->p2p_lo_started)) {
6715         case P2P_PREQ_NOT_P2P:
6716                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6717                                  ssi_signal);
6718                 /* fall through */
6719         case P2P_PREQ_MALFORMED:
6720         case P2P_PREQ_NOT_LISTEN:
6721         case P2P_PREQ_NOT_PROCESSED:
6722         default: /* make gcc happy */
6723                 return 0;
6724         case P2P_PREQ_PROCESSED:
6725                 return 1;
6726         }
6727 }
6728
6729
6730 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6731                         const u8 *sa, const u8 *bssid,
6732                         u8 category, const u8 *data, size_t len, int freq)
6733 {
6734         if (wpa_s->global->p2p_disabled)
6735                 return;
6736         if (wpa_s->global->p2p == NULL)
6737                 return;
6738
6739         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6740                       freq);
6741 }
6742
6743
6744 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6745 {
6746         unsigned int bands;
6747
6748         if (wpa_s->global->p2p_disabled)
6749                 return;
6750         if (wpa_s->global->p2p == NULL)
6751                 return;
6752
6753         bands = wpas_get_bands(wpa_s, NULL);
6754         p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
6755 }
6756
6757
6758 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6759 {
6760         p2p_group_deinit(wpa_s->p2p_group);
6761         wpa_s->p2p_group = NULL;
6762
6763         wpa_s->ap_configured_cb = NULL;
6764         wpa_s->ap_configured_cb_ctx = NULL;
6765         wpa_s->ap_configured_cb_data = NULL;
6766         wpa_s->connect_without_scan = NULL;
6767 }
6768
6769
6770 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6771 {
6772         wpa_s->p2p_long_listen = 0;
6773
6774         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6775                 return -1;
6776
6777         return p2p_reject(wpa_s->global->p2p, addr);
6778 }
6779
6780
6781 /* Invite to reinvoke a persistent group */
6782 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6783                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6784                     int vht_center_freq2, int ht40, int vht, int max_chwidth,
6785                     int pref_freq)
6786 {
6787         enum p2p_invite_role role;
6788         u8 *bssid = NULL;
6789         int force_freq = 0;
6790         int res;
6791         int no_pref_freq_given = pref_freq == 0;
6792         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6793
6794         wpa_s->global->p2p_invite_group = NULL;
6795         if (peer_addr)
6796                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6797         else
6798                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6799
6800         wpa_s->p2p_persistent_go_freq = freq;
6801         wpa_s->p2p_go_ht40 = !!ht40;
6802         wpa_s->p2p_go_vht = !!vht;
6803         wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
6804         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
6805         if (ssid->mode == WPAS_MODE_P2P_GO) {
6806                 role = P2P_INVITE_ROLE_GO;
6807                 if (peer_addr == NULL) {
6808                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6809                                    "address in invitation command");
6810                         return -1;
6811                 }
6812                 if (wpas_p2p_create_iface(wpa_s)) {
6813                         if (wpas_p2p_add_group_interface(wpa_s,
6814                                                          WPA_IF_P2P_GO) < 0) {
6815                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6816                                            "allocate a new interface for the "
6817                                            "group");
6818                                 return -1;
6819                         }
6820                         bssid = wpa_s->pending_interface_addr;
6821                 } else if (wpa_s->p2p_mgmt)
6822                         bssid = wpa_s->parent->own_addr;
6823                 else
6824                         bssid = wpa_s->own_addr;
6825         } else {
6826                 role = P2P_INVITE_ROLE_CLIENT;
6827                 peer_addr = ssid->bssid;
6828         }
6829         wpa_s->pending_invite_ssid_id = ssid->id;
6830
6831         size = P2P_MAX_PREF_CHANNELS;
6832         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6833                                    role == P2P_INVITE_ROLE_GO,
6834                                    pref_freq_list, &size);
6835         if (res)
6836                 return res;
6837
6838         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6839                 return -1;
6840
6841         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6842
6843         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6844             no_pref_freq_given && pref_freq > 0 &&
6845             wpa_s->num_multichan_concurrent > 1 &&
6846             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6847                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6848                            pref_freq);
6849                 pref_freq = 0;
6850         }
6851
6852         /*
6853          * Stop any find/listen operations before invitation and possibly
6854          * connection establishment.
6855          */
6856         wpas_p2p_stop_find_oper(wpa_s);
6857
6858         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6859                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6860                           1, pref_freq, -1);
6861 }
6862
6863
6864 /* Invite to join an active group */
6865 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6866                           const u8 *peer_addr, const u8 *go_dev_addr)
6867 {
6868         struct wpa_global *global = wpa_s->global;
6869         enum p2p_invite_role role;
6870         u8 *bssid = NULL;
6871         struct wpa_ssid *ssid;
6872         int persistent;
6873         int freq = 0, force_freq = 0, pref_freq = 0;
6874         int res;
6875         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6876
6877         wpa_s->p2p_persistent_go_freq = 0;
6878         wpa_s->p2p_go_ht40 = 0;
6879         wpa_s->p2p_go_vht = 0;
6880         wpa_s->p2p_go_vht_center_freq2 = 0;
6881         wpa_s->p2p_go_max_oper_chwidth = 0;
6882
6883         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6884                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6885                         break;
6886         }
6887         if (wpa_s == NULL) {
6888                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6889                 return -1;
6890         }
6891
6892         ssid = wpa_s->current_ssid;
6893         if (ssid == NULL) {
6894                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6895                            "invitation");
6896                 return -1;
6897         }
6898
6899         wpa_s->global->p2p_invite_group = wpa_s;
6900         persistent = ssid->p2p_persistent_group &&
6901                 wpas_p2p_get_persistent(wpa_s->p2pdev, peer_addr,
6902                                         ssid->ssid, ssid->ssid_len);
6903
6904         if (ssid->mode == WPAS_MODE_P2P_GO) {
6905                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6906                 bssid = wpa_s->own_addr;
6907                 if (go_dev_addr == NULL)
6908                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6909                 freq = ssid->frequency;
6910         } else {
6911                 role = P2P_INVITE_ROLE_CLIENT;
6912                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6913                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6914                                    "invite to current group");
6915                         return -1;
6916                 }
6917                 bssid = wpa_s->bssid;
6918                 if (go_dev_addr == NULL &&
6919                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6920                         go_dev_addr = wpa_s->go_dev_addr;
6921                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6922                         (int) wpa_s->assoc_freq;
6923         }
6924         wpa_s->p2pdev->pending_invite_ssid_id = -1;
6925
6926         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6927                 return -1;
6928
6929         size = P2P_MAX_PREF_CHANNELS;
6930         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6931                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
6932                                    pref_freq_list, &size);
6933         if (res)
6934                 return res;
6935         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6936
6937         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6938                           ssid->ssid, ssid->ssid_len, force_freq,
6939                           go_dev_addr, persistent, pref_freq, -1);
6940 }
6941
6942
6943 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6944 {
6945         struct wpa_ssid *ssid = wpa_s->current_ssid;
6946         u8 go_dev_addr[ETH_ALEN];
6947         int persistent;
6948         int freq;
6949         u8 ip[3 * 4];
6950         char ip_addr[100];
6951
6952         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6953                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6954                                      wpa_s->p2pdev, NULL);
6955         }
6956
6957         if (!wpa_s->show_group_started || !ssid)
6958                 return;
6959
6960         wpa_s->show_group_started = 0;
6961         if (!wpa_s->p2p_go_group_formation_completed &&
6962             wpa_s->global->p2p_group_formation == wpa_s) {
6963                 wpa_dbg(wpa_s, MSG_DEBUG,
6964                         "P2P: Marking group formation completed on client on data connection");
6965                 wpa_s->p2p_go_group_formation_completed = 1;
6966                 wpa_s->global->p2p_group_formation = NULL;
6967                 wpa_s->p2p_in_provisioning = 0;
6968                 wpa_s->p2p_in_invitation = 0;
6969         }
6970
6971         os_memset(go_dev_addr, 0, ETH_ALEN);
6972         if (ssid->bssid_set)
6973                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6974         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6975                                                ssid->ssid_len);
6976         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6977
6978         if (wpa_s->global->p2p_group_formation == wpa_s)
6979                 wpa_s->global->p2p_group_formation = NULL;
6980
6981         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6982                 (int) wpa_s->assoc_freq;
6983
6984         ip_addr[0] = '\0';
6985         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6986                 int res;
6987
6988                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6989                                   " ip_addr=%u.%u.%u.%u "
6990                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6991                                   ip[0], ip[1], ip[2], ip[3],
6992                                   ip[4], ip[5], ip[6], ip[7],
6993                                   ip[8], ip[9], ip[10], ip[11]);
6994                 if (os_snprintf_error(sizeof(ip_addr), res))
6995                         ip_addr[0] = '\0';
6996         }
6997
6998         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6999                                ssid->passphrase == NULL && ssid->psk_set ?
7000                                ssid->psk : NULL,
7001                                ssid->passphrase, go_dev_addr, persistent,
7002                                ip_addr);
7003
7004         if (persistent)
7005                 wpas_p2p_store_persistent_group(wpa_s->p2pdev,
7006                                                 ssid, go_dev_addr);
7007
7008         wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 1);
7009 }
7010
7011
7012 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
7013                           u32 interval1, u32 duration2, u32 interval2)
7014 {
7015         int ret;
7016
7017         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7018                 return -1;
7019
7020         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
7021             wpa_s->current_ssid == NULL ||
7022             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
7023                 return -1;
7024
7025         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
7026                                wpa_s->own_addr, wpa_s->assoc_freq,
7027                                duration1, interval1, duration2, interval2);
7028         if (ret == 0)
7029                 wpa_s->waiting_presence_resp = 1;
7030
7031         return ret;
7032 }
7033
7034
7035 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
7036                         unsigned int interval)
7037 {
7038         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7039                 return -1;
7040
7041         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
7042 }
7043
7044
7045 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
7046 {
7047         if (wpa_s->current_ssid == NULL) {
7048                 /*
7049                  * current_ssid can be cleared when P2P client interface gets
7050                  * disconnected, so assume this interface was used as P2P
7051                  * client.
7052                  */
7053                 return 1;
7054         }
7055         return wpa_s->current_ssid->p2p_group &&
7056                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
7057 }
7058
7059
7060 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
7061 {
7062         struct wpa_supplicant *wpa_s = eloop_ctx;
7063
7064         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
7065                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
7066                            "disabled");
7067                 return;
7068         }
7069
7070         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
7071                    "group");
7072         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7073 }
7074
7075
7076 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7077 {
7078         int timeout;
7079
7080         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7081                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7082
7083         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7084                 return;
7085
7086         timeout = wpa_s->conf->p2p_group_idle;
7087         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7088             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7089             timeout = P2P_MAX_CLIENT_IDLE;
7090
7091         if (timeout == 0)
7092                 return;
7093
7094         if (timeout < 0) {
7095                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7096                         timeout = 0; /* special client mode no-timeout */
7097                 else
7098                         return;
7099         }
7100
7101         if (wpa_s->p2p_in_provisioning) {
7102                 /*
7103                  * Use the normal group formation timeout during the
7104                  * provisioning phase to avoid terminating this process too
7105                  * early due to group idle timeout.
7106                  */
7107                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7108                            "during provisioning");
7109                 return;
7110         }
7111
7112         if (wpa_s->show_group_started) {
7113                 /*
7114                  * Use the normal group formation timeout between the end of
7115                  * the provisioning phase and completion of 4-way handshake to
7116                  * avoid terminating this process too early due to group idle
7117                  * timeout.
7118                  */
7119                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7120                            "while waiting for initial 4-way handshake to "
7121                            "complete");
7122                 return;
7123         }
7124
7125         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7126                    timeout);
7127         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7128                                wpa_s, NULL);
7129 }
7130
7131
7132 /* Returns 1 if the interface was removed */
7133 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7134                           u16 reason_code, const u8 *ie, size_t ie_len,
7135                           int locally_generated)
7136 {
7137         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7138                 return 0;
7139
7140         if (!locally_generated)
7141                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7142                                  ie_len);
7143
7144         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7145             wpa_s->current_ssid &&
7146             wpa_s->current_ssid->p2p_group &&
7147             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7148                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7149                            "session is ending");
7150                 if (wpas_p2p_group_delete(wpa_s,
7151                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7152                     > 0)
7153                         return 1;
7154         }
7155
7156         return 0;
7157 }
7158
7159
7160 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7161                              u16 reason_code, const u8 *ie, size_t ie_len,
7162                              int locally_generated)
7163 {
7164         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7165                 return;
7166
7167         if (!locally_generated)
7168                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7169                                    ie_len);
7170 }
7171
7172
7173 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7174 {
7175         struct p2p_data *p2p = wpa_s->global->p2p;
7176
7177         if (p2p == NULL)
7178                 return;
7179
7180         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7181                 return;
7182
7183         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7184                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7185
7186         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7187                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7188
7189         if (wpa_s->wps &&
7190             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7191                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7192
7193         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7194                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7195
7196         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7197                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7198                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7199                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7200                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7201         }
7202
7203         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7204                 p2p_set_sec_dev_types(p2p,
7205                                       (void *) wpa_s->conf->sec_device_type,
7206                                       wpa_s->conf->num_sec_device_types);
7207
7208         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7209                 int i;
7210                 p2p_remove_wps_vendor_extensions(p2p);
7211                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7212                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7213                                 continue;
7214                         p2p_add_wps_vendor_extension(
7215                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
7216                 }
7217         }
7218
7219         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7220             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7221                 char country[3];
7222                 country[0] = wpa_s->conf->country[0];
7223                 country[1] = wpa_s->conf->country[1];
7224                 country[2] = 0x04;
7225                 p2p_set_country(p2p, country);
7226         }
7227
7228         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7229                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7230                                      wpa_s->conf->p2p_ssid_postfix ?
7231                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7232                                      0);
7233         }
7234
7235         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7236                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7237
7238         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7239                 u8 reg_class, channel;
7240                 int ret;
7241                 unsigned int r;
7242                 u8 channel_forced;
7243
7244                 if (wpa_s->conf->p2p_listen_reg_class &&
7245                     wpa_s->conf->p2p_listen_channel) {
7246                         reg_class = wpa_s->conf->p2p_listen_reg_class;
7247                         channel = wpa_s->conf->p2p_listen_channel;
7248                         channel_forced = 1;
7249                 } else {
7250                         reg_class = 81;
7251                         /*
7252                          * Pick one of the social channels randomly as the
7253                          * listen channel.
7254                          */
7255                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7256                                 channel = 1;
7257                         else
7258                                 channel = 1 + (r % 3) * 5;
7259                         channel_forced = 0;
7260                 }
7261                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7262                                              channel_forced);
7263                 if (ret)
7264                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7265                                    "failed: %d", ret);
7266         }
7267         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7268                 u8 op_reg_class, op_channel, cfg_op_channel;
7269                 int ret = 0;
7270                 unsigned int r;
7271                 if (wpa_s->conf->p2p_oper_reg_class &&
7272                     wpa_s->conf->p2p_oper_channel) {
7273                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7274                         op_channel = wpa_s->conf->p2p_oper_channel;
7275                         cfg_op_channel = 1;
7276                 } else {
7277                         op_reg_class = 81;
7278                         /*
7279                          * Use random operation channel from (1, 6, 11)
7280                          *if no other preference is indicated.
7281                          */
7282                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7283                                 op_channel = 1;
7284                         else
7285                                 op_channel = 1 + (r % 3) * 5;
7286                         cfg_op_channel = 0;
7287                 }
7288                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7289                                            cfg_op_channel);
7290                 if (ret)
7291                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7292                                    "failed: %d", ret);
7293         }
7294
7295         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7296                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7297                                       wpa_s->conf->p2p_pref_chan) < 0) {
7298                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7299                                    "update failed");
7300                 }
7301
7302                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7303                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7304                                    "update failed");
7305                 }
7306         }
7307
7308         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7309                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7310 }
7311
7312
7313 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7314                      int duration)
7315 {
7316         if (!wpa_s->ap_iface)
7317                 return -1;
7318         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7319                                    duration);
7320 }
7321
7322
7323 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7324 {
7325         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7326                 return -1;
7327
7328         wpa_s->global->cross_connection = enabled;
7329         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7330
7331         if (!enabled) {
7332                 struct wpa_supplicant *iface;
7333
7334                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7335                 {
7336                         if (iface->cross_connect_enabled == 0)
7337                                 continue;
7338
7339                         iface->cross_connect_enabled = 0;
7340                         iface->cross_connect_in_use = 0;
7341                         wpa_msg_global(iface->p2pdev, MSG_INFO,
7342                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7343                                        iface->ifname,
7344                                        iface->cross_connect_uplink);
7345                 }
7346         }
7347
7348         return 0;
7349 }
7350
7351
7352 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7353 {
7354         struct wpa_supplicant *iface;
7355
7356         if (!uplink->global->cross_connection)
7357                 return;
7358
7359         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7360                 if (!iface->cross_connect_enabled)
7361                         continue;
7362                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7363                     0)
7364                         continue;
7365                 if (iface->ap_iface == NULL)
7366                         continue;
7367                 if (iface->cross_connect_in_use)
7368                         continue;
7369
7370                 iface->cross_connect_in_use = 1;
7371                 wpa_msg_global(iface->p2pdev, MSG_INFO,
7372                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7373                                iface->ifname, iface->cross_connect_uplink);
7374         }
7375 }
7376
7377
7378 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7379 {
7380         struct wpa_supplicant *iface;
7381
7382         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7383                 if (!iface->cross_connect_enabled)
7384                         continue;
7385                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7386                     0)
7387                         continue;
7388                 if (!iface->cross_connect_in_use)
7389                         continue;
7390
7391                 wpa_msg_global(iface->p2pdev, MSG_INFO,
7392                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7393                                iface->ifname, iface->cross_connect_uplink);
7394                 iface->cross_connect_in_use = 0;
7395         }
7396 }
7397
7398
7399 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7400 {
7401         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7402             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7403             wpa_s->cross_connect_disallowed)
7404                 wpas_p2p_disable_cross_connect(wpa_s);
7405         else
7406                 wpas_p2p_enable_cross_connect(wpa_s);
7407         if (!wpa_s->ap_iface &&
7408             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7409                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7410 }
7411
7412
7413 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7414 {
7415         wpas_p2p_disable_cross_connect(wpa_s);
7416         if (!wpa_s->ap_iface &&
7417             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7418                                          wpa_s, NULL))
7419                 wpas_p2p_set_group_idle_timeout(wpa_s);
7420 }
7421
7422
7423 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7424 {
7425         struct wpa_supplicant *iface;
7426
7427         if (!wpa_s->global->cross_connection)
7428                 return;
7429
7430         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7431                 if (iface == wpa_s)
7432                         continue;
7433                 if (iface->drv_flags &
7434                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7435                         continue;
7436                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7437                     iface != wpa_s->parent)
7438                         continue;
7439
7440                 wpa_s->cross_connect_enabled = 1;
7441                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7442                            sizeof(wpa_s->cross_connect_uplink));
7443                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7444                            "%s to %s whenever uplink is available",
7445                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7446
7447                 if (iface->ap_iface || iface->current_ssid == NULL ||
7448                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7449                     iface->cross_connect_disallowed ||
7450                     iface->wpa_state != WPA_COMPLETED)
7451                         break;
7452
7453                 wpa_s->cross_connect_in_use = 1;
7454                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
7455                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7456                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7457                 break;
7458         }
7459 }
7460
7461
7462 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7463 {
7464         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7465             !wpa_s->p2p_in_provisioning)
7466                 return 0; /* not P2P client operation */
7467
7468         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7469                    "session overlap");
7470         if (wpa_s != wpa_s->p2pdev)
7471                 wpa_msg_ctrl(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_OVERLAP);
7472         wpas_p2p_group_formation_failed(wpa_s, 0);
7473         return 1;
7474 }
7475
7476
7477 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7478 {
7479         struct wpa_supplicant *wpa_s = eloop_ctx;
7480         wpas_p2p_notif_pbc_overlap(wpa_s);
7481 }
7482
7483
7484 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7485                                   enum wpas_p2p_channel_update_trig trig)
7486 {
7487         struct p2p_channels chan, cli_chan;
7488         struct wpa_used_freq_data *freqs = NULL;
7489         unsigned int num = wpa_s->num_multichan_concurrent;
7490
7491         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7492                 return;
7493
7494         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7495         if (!freqs)
7496                 return;
7497
7498         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7499
7500         os_memset(&chan, 0, sizeof(chan));
7501         os_memset(&cli_chan, 0, sizeof(cli_chan));
7502         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7503                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7504                            "channel list");
7505                 return;
7506         }
7507
7508         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7509
7510         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7511
7512         /*
7513          * The used frequencies map changed, so it is possible that a GO is
7514          * using a channel that is no longer valid for P2P use. It is also
7515          * possible that due to policy consideration, it would be preferable to
7516          * move it to a frequency already used by other station interfaces.
7517          */
7518         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7519
7520         os_free(freqs);
7521 }
7522
7523
7524 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7525                                      struct wpa_scan_results *scan_res)
7526 {
7527         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7528 }
7529
7530
7531 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7532 {
7533         struct wpa_global *global = wpa_s->global;
7534         int found = 0;
7535         const u8 *peer;
7536
7537         if (global->p2p == NULL)
7538                 return -1;
7539
7540         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7541
7542         if (wpa_s->pending_interface_name[0] &&
7543             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7544                 found = 1;
7545
7546         peer = p2p_get_go_neg_peer(global->p2p);
7547         if (peer) {
7548                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7549                            MACSTR, MAC2STR(peer));
7550                 p2p_unauthorize(global->p2p, peer);
7551                 found = 1;
7552         }
7553
7554         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7555                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7556                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7557                 found = 1;
7558         }
7559
7560         if (wpa_s->pending_pd_before_join) {
7561                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7562                 wpa_s->pending_pd_before_join = 0;
7563                 found = 1;
7564         }
7565
7566         wpas_p2p_stop_find(wpa_s);
7567
7568         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7569                 if (wpa_s == global->p2p_group_formation &&
7570                     (wpa_s->p2p_in_provisioning ||
7571                      wpa_s->parent->pending_interface_type ==
7572                      WPA_IF_P2P_CLIENT)) {
7573                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7574                                    "formation found - cancelling",
7575                                    wpa_s->ifname);
7576                         found = 1;
7577                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7578                                              wpa_s->p2pdev, NULL);
7579                         if (wpa_s->p2p_in_provisioning) {
7580                                 wpas_group_formation_completed(wpa_s, 0, 0);
7581                                 break;
7582                         }
7583                         wpas_p2p_group_delete(wpa_s,
7584                                               P2P_GROUP_REMOVAL_REQUESTED);
7585                         break;
7586                 } else if (wpa_s->p2p_in_invitation) {
7587                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7588                                    wpa_s->ifname);
7589                         found = 1;
7590                         wpas_p2p_group_formation_failed(wpa_s, 0);
7591                         break;
7592                 }
7593         }
7594
7595         if (!found) {
7596                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7597                 return -1;
7598         }
7599
7600         return 0;
7601 }
7602
7603
7604 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7605 {
7606         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7607                 return;
7608
7609         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7610                    "being available anymore");
7611         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7612 }
7613
7614
7615 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7616                                    int freq_24, int freq_5, int freq_overall)
7617 {
7618         struct p2p_data *p2p = wpa_s->global->p2p;
7619         if (p2p == NULL)
7620                 return;
7621         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7622 }
7623
7624
7625 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7626 {
7627         u8 peer[ETH_ALEN];
7628         struct p2p_data *p2p = wpa_s->global->p2p;
7629
7630         if (p2p == NULL)
7631                 return -1;
7632
7633         if (hwaddr_aton(addr, peer))
7634                 return -1;
7635
7636         return p2p_unauthorize(p2p, peer);
7637 }
7638
7639
7640 /**
7641  * wpas_p2p_disconnect - Disconnect from a P2P Group
7642  * @wpa_s: Pointer to wpa_supplicant data
7643  * Returns: 0 on success, -1 on failure
7644  *
7645  * This can be used to disconnect from a group in which the local end is a P2P
7646  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7647  * virtual network interface was created for this group, that interface will be
7648  * removed. Otherwise, only the configured P2P group network will be removed
7649  * from the interface.
7650  */
7651 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7652 {
7653
7654         if (wpa_s == NULL)
7655                 return -1;
7656
7657         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7658                 -1 : 0;
7659 }
7660
7661
7662 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7663 {
7664         int ret;
7665
7666         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7667                 return 0;
7668
7669         ret = p2p_in_progress(wpa_s->global->p2p);
7670         if (ret == 0) {
7671                 /*
7672                  * Check whether there is an ongoing WPS provisioning step (or
7673                  * other parts of group formation) on another interface since
7674                  * p2p_in_progress() does not report this to avoid issues for
7675                  * scans during such provisioning step.
7676                  */
7677                 if (wpa_s->global->p2p_group_formation &&
7678                     wpa_s->global->p2p_group_formation != wpa_s) {
7679                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7680                                 "in group formation",
7681                                 wpa_s->global->p2p_group_formation->ifname);
7682                         ret = 1;
7683                 }
7684         }
7685
7686         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7687                 struct os_reltime now;
7688                 os_get_reltime(&now);
7689                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7690                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7691                         /* Wait for the first client has expired */
7692                         wpa_s->global->p2p_go_wait_client.sec = 0;
7693                 } else {
7694                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7695                         ret = 1;
7696                 }
7697         }
7698
7699         return ret;
7700 }
7701
7702
7703 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7704                               struct wpa_ssid *ssid)
7705 {
7706         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7707             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7708                                  wpa_s->p2pdev, NULL) > 0) {
7709                 /**
7710                  * Remove the network by scheduling the group formation
7711                  * timeout to happen immediately. The teardown code
7712                  * needs to be scheduled to run asynch later so that we
7713                  * don't delete data from under ourselves unexpectedly.
7714                  * Calling wpas_p2p_group_formation_timeout directly
7715                  * causes a series of crashes in WPS failure scenarios.
7716                  */
7717                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7718                            "P2P group network getting removed");
7719                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7720                                        wpa_s->p2pdev, NULL);
7721         }
7722 }
7723
7724
7725 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7726                                           const u8 *addr, const u8 *ssid,
7727                                           size_t ssid_len)
7728 {
7729         struct wpa_ssid *s;
7730         size_t i;
7731
7732         for (s = wpa_s->conf->ssid; s; s = s->next) {
7733                 if (s->disabled != 2)
7734                         continue;
7735                 if (ssid &&
7736                     (ssid_len != s->ssid_len ||
7737                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7738                         continue;
7739                 if (addr == NULL) {
7740                         if (s->mode == WPAS_MODE_P2P_GO)
7741                                 return s;
7742                         continue;
7743                 }
7744                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7745                         return s; /* peer is GO in the persistent group */
7746                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7747                         continue;
7748                 for (i = 0; i < s->num_p2p_clients; i++) {
7749                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7750                                       addr, ETH_ALEN) == 0)
7751                                 return s; /* peer is P2P client in persistent
7752                                            * group */
7753                 }
7754         }
7755
7756         return NULL;
7757 }
7758
7759
7760 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7761                                        const u8 *addr)
7762 {
7763         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7764                                  wpa_s->p2pdev, NULL) > 0) {
7765                 /*
7766                  * This can happen if WPS provisioning step is not terminated
7767                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7768                  * peer was able to connect, there is no need to time out group
7769                  * formation after this, though. In addition, this is used with
7770                  * the initial connection wait on the GO as a separate formation
7771                  * timeout and as such, expected to be hit after the initial WPS
7772                  * provisioning step.
7773                  */
7774                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7775
7776                 if (!wpa_s->p2p_go_group_formation_completed &&
7777                     !wpa_s->group_formation_reported) {
7778                         /*
7779                          * GO has not yet notified group formation success since
7780                          * the WPS step was not completed cleanly. Do that
7781                          * notification now since the P2P Client was able to
7782                          * connect and as such, must have received the
7783                          * credential from the WPS step.
7784                          */
7785                         if (wpa_s->global->p2p)
7786                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7787                         wpas_group_formation_completed(wpa_s, 1, 0);
7788                 }
7789         }
7790         if (!wpa_s->p2p_go_group_formation_completed) {
7791                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7792                 wpa_s->p2p_go_group_formation_completed = 1;
7793                 wpa_s->global->p2p_group_formation = NULL;
7794                 wpa_s->p2p_in_provisioning = 0;
7795                 wpa_s->p2p_in_invitation = 0;
7796         }
7797         wpa_s->global->p2p_go_wait_client.sec = 0;
7798         if (addr == NULL)
7799                 return;
7800         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7801 }
7802
7803
7804 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7805                                        int group_added)
7806 {
7807         struct wpa_supplicant *group = wpa_s;
7808         int ret = 0;
7809
7810         if (wpa_s->global->p2p_group_formation)
7811                 group = wpa_s->global->p2p_group_formation;
7812         wpa_s = wpa_s->global->p2p_init_wpa_s;
7813         offchannel_send_action_done(wpa_s);
7814         if (group_added)
7815                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7816         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7817         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7818                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7819                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7820                          wpa_s->p2p_go_vht_center_freq2,
7821                          wpa_s->p2p_persistent_id,
7822                          wpa_s->p2p_pd_before_go_neg,
7823                          wpa_s->p2p_go_ht40,
7824                          wpa_s->p2p_go_vht,
7825                          wpa_s->p2p_go_max_oper_chwidth, NULL, 0);
7826         return ret;
7827 }
7828
7829
7830 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7831 {
7832         int res;
7833
7834         if (!wpa_s->p2p_fallback_to_go_neg ||
7835             wpa_s->p2p_in_provisioning <= 5)
7836                 return 0;
7837
7838         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7839                 return 0; /* peer operating as a GO */
7840
7841         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7842                 "fallback to GO Negotiation");
7843         wpa_msg_global(wpa_s->p2pdev, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7844                        "reason=GO-not-found");
7845         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7846
7847         return res == 1 ? 2 : 1;
7848 }
7849
7850
7851 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7852 {
7853         struct wpa_supplicant *ifs;
7854
7855         if (wpa_s->wpa_state > WPA_SCANNING) {
7856                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7857                         "concurrent operation",
7858                         wpa_s->conf->p2p_search_delay);
7859                 return wpa_s->conf->p2p_search_delay;
7860         }
7861
7862         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7863                          radio_list) {
7864                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7865                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7866                                 "delay due to concurrent operation on "
7867                                 "interface %s",
7868                                 wpa_s->conf->p2p_search_delay,
7869                                 ifs->ifname);
7870                         return wpa_s->conf->p2p_search_delay;
7871                 }
7872         }
7873
7874         return 0;
7875 }
7876
7877
7878 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7879                                      struct wpa_ssid *s, const u8 *addr,
7880                                      int iface_addr)
7881 {
7882         struct psk_list_entry *psk, *tmp;
7883         int changed = 0;
7884
7885         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7886                               list) {
7887                 if ((iface_addr && !psk->p2p &&
7888                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7889                     (!iface_addr && psk->p2p &&
7890                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7891                         wpa_dbg(wpa_s, MSG_DEBUG,
7892                                 "P2P: Remove persistent group PSK list entry for "
7893                                 MACSTR " p2p=%u",
7894                                 MAC2STR(psk->addr), psk->p2p);
7895                         dl_list_del(&psk->list);
7896                         os_free(psk);
7897                         changed++;
7898                 }
7899         }
7900
7901         return changed;
7902 }
7903
7904
7905 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7906                          const u8 *p2p_dev_addr,
7907                          const u8 *psk, size_t psk_len)
7908 {
7909         struct wpa_ssid *ssid = wpa_s->current_ssid;
7910         struct wpa_ssid *persistent;
7911         struct psk_list_entry *p, *last;
7912
7913         if (psk_len != sizeof(p->psk))
7914                 return;
7915
7916         if (p2p_dev_addr) {
7917                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7918                         " p2p_dev_addr=" MACSTR,
7919                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7920                 if (is_zero_ether_addr(p2p_dev_addr))
7921                         p2p_dev_addr = NULL;
7922         } else {
7923                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7924                         MAC2STR(mac_addr));
7925         }
7926
7927         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7928                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7929                 /* To be added to persistent group once created */
7930                 if (wpa_s->global->add_psk == NULL) {
7931                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7932                         if (wpa_s->global->add_psk == NULL)
7933                                 return;
7934                 }
7935                 p = wpa_s->global->add_psk;
7936                 if (p2p_dev_addr) {
7937                         p->p2p = 1;
7938                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7939                 } else {
7940                         p->p2p = 0;
7941                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7942                 }
7943                 os_memcpy(p->psk, psk, psk_len);
7944                 return;
7945         }
7946
7947         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7948                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7949                 return;
7950         }
7951
7952         persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
7953                                              ssid->ssid_len);
7954         if (!persistent) {
7955                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7956                 return;
7957         }
7958
7959         p = os_zalloc(sizeof(*p));
7960         if (p == NULL)
7961                 return;
7962         if (p2p_dev_addr) {
7963                 p->p2p = 1;
7964                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7965         } else {
7966                 p->p2p = 0;
7967                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7968         }
7969         os_memcpy(p->psk, psk, psk_len);
7970
7971         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7972             (last = dl_list_last(&persistent->psk_list,
7973                                  struct psk_list_entry, list))) {
7974                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7975                         MACSTR " (p2p=%u) to make room for a new one",
7976                         MAC2STR(last->addr), last->p2p);
7977                 dl_list_del(&last->list);
7978                 os_free(last);
7979         }
7980
7981         wpas_p2p_remove_psk_entry(wpa_s->p2pdev, persistent,
7982                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7983                                   p2p_dev_addr == NULL);
7984         if (p2p_dev_addr) {
7985                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7986                         MACSTR, MAC2STR(p2p_dev_addr));
7987         } else {
7988                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7989                         MAC2STR(mac_addr));
7990         }
7991         dl_list_add(&persistent->psk_list, &p->list);
7992
7993         if (wpa_s->p2pdev->conf->update_config &&
7994             wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
7995                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7996 }
7997
7998
7999 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
8000                                 struct wpa_ssid *s, const u8 *addr,
8001                                 int iface_addr)
8002 {
8003         int res;
8004
8005         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
8006         if (res > 0 && wpa_s->conf->update_config &&
8007             wpa_config_write(wpa_s->confname, wpa_s->conf))
8008                 wpa_dbg(wpa_s, MSG_DEBUG,
8009                         "P2P: Failed to update configuration");
8010 }
8011
8012
8013 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
8014                                       const u8 *peer, int iface_addr)
8015 {
8016         struct hostapd_data *hapd;
8017         struct hostapd_wpa_psk *psk, *prev, *rem;
8018         struct sta_info *sta;
8019
8020         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
8021             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
8022                 return;
8023
8024         /* Remove per-station PSK entry */
8025         hapd = wpa_s->ap_iface->bss[0];
8026         prev = NULL;
8027         psk = hapd->conf->ssid.wpa_psk;
8028         while (psk) {
8029                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
8030                     (!iface_addr &&
8031                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
8032                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
8033                                 MACSTR " iface_addr=%d",
8034                                 MAC2STR(peer), iface_addr);
8035                         if (prev)
8036                                 prev->next = psk->next;
8037                         else
8038                                 hapd->conf->ssid.wpa_psk = psk->next;
8039                         rem = psk;
8040                         psk = psk->next;
8041                         os_free(rem);
8042                 } else {
8043                         prev = psk;
8044                         psk = psk->next;
8045                 }
8046         }
8047
8048         /* Disconnect from group */
8049         if (iface_addr)
8050                 sta = ap_get_sta(hapd, peer);
8051         else
8052                 sta = ap_get_sta_p2p(hapd, peer);
8053         if (sta) {
8054                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
8055                         " (iface_addr=%d) from group",
8056                         MAC2STR(peer), iface_addr);
8057                 hostapd_drv_sta_deauth(hapd, sta->addr,
8058                                        WLAN_REASON_DEAUTH_LEAVING);
8059                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
8060         }
8061 }
8062
8063
8064 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
8065                             int iface_addr)
8066 {
8067         struct wpa_ssid *s;
8068         struct wpa_supplicant *w;
8069         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
8070
8071         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
8072
8073         /* Remove from any persistent group */
8074         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
8075                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8076                         continue;
8077                 if (!iface_addr)
8078                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
8079                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
8080         }
8081
8082         /* Remove from any operating group */
8083         for (w = wpa_s->global->ifaces; w; w = w->next)
8084                 wpas_p2p_remove_client_go(w, peer, iface_addr);
8085 }
8086
8087
8088 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8089 {
8090         struct wpa_supplicant *wpa_s = eloop_ctx;
8091         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8092 }
8093
8094
8095 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8096 {
8097         struct wpa_supplicant *wpa_s = eloop_ctx;
8098
8099         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8100         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8101 }
8102
8103
8104 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8105                                         struct wpa_ssid *ssid)
8106 {
8107         struct wpa_supplicant *iface;
8108
8109         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8110                 if (!iface->current_ssid ||
8111                     iface->current_ssid->frequency == freq ||
8112                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8113                      !iface->current_ssid->p2p_group))
8114                         continue;
8115
8116                 /* Remove the connection with least priority */
8117                 if (!wpas_is_p2p_prioritized(iface)) {
8118                         /* STA connection has priority over existing
8119                          * P2P connection, so remove the interface. */
8120                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8121                         eloop_register_timeout(0, 0,
8122                                                wpas_p2p_group_freq_conflict,
8123                                                iface, NULL);
8124                         /* If connection in progress is P2P connection, do not
8125                          * proceed for the connection. */
8126                         if (wpa_s == iface)
8127                                 return -1;
8128                         else
8129                                 return 0;
8130                 } else {
8131                         /* P2P connection has priority, disable the STA network
8132                          */
8133                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
8134                                                        ssid);
8135                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8136                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8137                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8138                                   ETH_ALEN);
8139                         /* If P2P connection is in progress, continue
8140                          * connecting...*/
8141                         if (wpa_s == iface)
8142                                 return 0;
8143                         else
8144                                 return -1;
8145                 }
8146         }
8147
8148         return 0;
8149 }
8150
8151
8152 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8153 {
8154         struct wpa_ssid *ssid = wpa_s->current_ssid;
8155
8156         if (ssid == NULL || !ssid->p2p_group)
8157                 return 0;
8158
8159         if (wpa_s->p2p_last_4way_hs_fail &&
8160             wpa_s->p2p_last_4way_hs_fail == ssid) {
8161                 u8 go_dev_addr[ETH_ALEN];
8162                 struct wpa_ssid *persistent;
8163
8164                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8165                                               ssid->ssid,
8166                                               ssid->ssid_len) <= 0) {
8167                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8168                         goto disconnect;
8169                 }
8170
8171                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8172                         MACSTR, MAC2STR(go_dev_addr));
8173                 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, go_dev_addr,
8174                                                      ssid->ssid,
8175                                                      ssid->ssid_len);
8176                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8177                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8178                         goto disconnect;
8179                 }
8180                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
8181                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8182                                persistent->id);
8183         disconnect:
8184                 wpa_s->p2p_last_4way_hs_fail = NULL;
8185                 /*
8186                  * Remove the group from a timeout to avoid issues with caller
8187                  * continuing to use the interface if this is on a P2P group
8188                  * interface.
8189                  */
8190                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8191                                        wpa_s, NULL);
8192                 return 1;
8193         }
8194
8195         wpa_s->p2p_last_4way_hs_fail = ssid;
8196         return 0;
8197 }
8198
8199
8200 #ifdef CONFIG_WPS_NFC
8201
8202 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8203                                              struct wpabuf *p2p)
8204 {
8205         struct wpabuf *ret;
8206         size_t wsc_len;
8207
8208         if (p2p == NULL) {
8209                 wpabuf_free(wsc);
8210                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8211                 return NULL;
8212         }
8213
8214         wsc_len = wsc ? wpabuf_len(wsc) : 0;
8215         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8216         if (ret == NULL) {
8217                 wpabuf_free(wsc);
8218                 wpabuf_free(p2p);
8219                 return NULL;
8220         }
8221
8222         wpabuf_put_be16(ret, wsc_len);
8223         if (wsc)
8224                 wpabuf_put_buf(ret, wsc);
8225         wpabuf_put_be16(ret, wpabuf_len(p2p));
8226         wpabuf_put_buf(ret, p2p);
8227
8228         wpabuf_free(wsc);
8229         wpabuf_free(p2p);
8230         wpa_hexdump_buf(MSG_DEBUG,
8231                         "P2P: Generated NFC connection handover message", ret);
8232
8233         if (ndef && ret) {
8234                 struct wpabuf *tmp;
8235                 tmp = ndef_build_p2p(ret);
8236                 wpabuf_free(ret);
8237                 if (tmp == NULL) {
8238                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8239                         return NULL;
8240                 }
8241                 ret = tmp;
8242         }
8243
8244         return ret;
8245 }
8246
8247
8248 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8249                              struct wpa_ssid **ssid, u8 *go_dev_addr)
8250 {
8251         struct wpa_supplicant *iface;
8252
8253         if (go_dev_addr)
8254                 os_memset(go_dev_addr, 0, ETH_ALEN);
8255         if (ssid)
8256                 *ssid = NULL;
8257         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8258                 if (iface->wpa_state < WPA_ASSOCIATING ||
8259                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8260                     !iface->current_ssid->p2p_group ||
8261                     iface->current_ssid->mode != WPAS_MODE_INFRA)
8262                         continue;
8263                 if (ssid)
8264                         *ssid = iface->current_ssid;
8265                 if (go_dev_addr)
8266                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8267                 return iface->assoc_freq;
8268         }
8269         return 0;
8270 }
8271
8272
8273 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8274                                           int ndef)
8275 {
8276         struct wpabuf *wsc, *p2p;
8277         struct wpa_ssid *ssid;
8278         u8 go_dev_addr[ETH_ALEN];
8279         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8280
8281         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8282                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8283                 return NULL;
8284         }
8285
8286         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8287             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8288                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8289                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8290                 return NULL;
8291         }
8292
8293         if (cli_freq == 0) {
8294                 wsc = wps_build_nfc_handover_req_p2p(
8295                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8296         } else
8297                 wsc = NULL;
8298         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8299                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8300                                          ssid ? ssid->ssid_len : 0);
8301
8302         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8303 }
8304
8305
8306 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8307                                           int ndef, int tag)
8308 {
8309         struct wpabuf *wsc, *p2p;
8310         struct wpa_ssid *ssid;
8311         u8 go_dev_addr[ETH_ALEN];
8312         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8313
8314         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8315                 return NULL;
8316
8317         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8318             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8319                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8320                 return NULL;
8321
8322         if (cli_freq == 0) {
8323                 wsc = wps_build_nfc_handover_sel_p2p(
8324                         wpa_s->parent->wps,
8325                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8326                         DEV_PW_NFC_CONNECTION_HANDOVER,
8327                         wpa_s->conf->wps_nfc_dh_pubkey,
8328                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8329         } else
8330                 wsc = NULL;
8331         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8332                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8333                                          ssid ? ssid->ssid_len : 0);
8334
8335         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8336 }
8337
8338
8339 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8340                                    struct p2p_nfc_params *params)
8341 {
8342         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8343                    "connection handover (freq=%d)",
8344                    params->go_freq);
8345
8346         if (params->go_freq && params->go_ssid_len) {
8347                 wpa_s->p2p_wps_method = WPS_NFC;
8348                 wpa_s->pending_join_wps_method = WPS_NFC;
8349                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8350                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8351                           ETH_ALEN);
8352                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8353                                            params->go_ssid,
8354                                            params->go_ssid_len);
8355         }
8356
8357         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8358                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8359                                 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8360                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8361                                 params->go_ssid_len ? params->go_ssid : NULL,
8362                                 params->go_ssid_len);
8363 }
8364
8365
8366 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8367                                   struct p2p_nfc_params *params, int tag)
8368 {
8369         int res, persistent;
8370         struct wpa_ssid *ssid;
8371
8372         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8373                    "connection handover");
8374         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8375                 ssid = wpa_s->current_ssid;
8376                 if (ssid == NULL)
8377                         continue;
8378                 if (ssid->mode != WPAS_MODE_P2P_GO)
8379                         continue;
8380                 if (wpa_s->ap_iface == NULL)
8381                         continue;
8382                 break;
8383         }
8384         if (wpa_s == NULL) {
8385                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8386                 return -1;
8387         }
8388
8389         if (wpa_s->p2pdev->p2p_oob_dev_pw_id !=
8390             DEV_PW_NFC_CONNECTION_HANDOVER &&
8391             !wpa_s->p2pdev->p2p_oob_dev_pw) {
8392                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8393                 return -1;
8394         }
8395         res = wpas_ap_wps_add_nfc_pw(
8396                 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id,
8397                 wpa_s->p2pdev->p2p_oob_dev_pw,
8398                 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ?
8399                 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL);
8400         if (res)
8401                 return res;
8402
8403         if (!tag) {
8404                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8405                 return 0;
8406         }
8407
8408         if (!params->peer ||
8409             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8410                 return 0;
8411
8412         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8413                    " to join", MAC2STR(params->peer->p2p_device_addr));
8414
8415         wpa_s->global->p2p_invite_group = wpa_s;
8416         persistent = ssid->p2p_persistent_group &&
8417                 wpas_p2p_get_persistent(wpa_s->p2pdev,
8418                                         params->peer->p2p_device_addr,
8419                                         ssid->ssid, ssid->ssid_len);
8420         wpa_s->p2pdev->pending_invite_ssid_id = -1;
8421
8422         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8423                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8424                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8425                           wpa_s->global->p2p_dev_addr, persistent, 0,
8426                           wpa_s->p2pdev->p2p_oob_dev_pw_id);
8427 }
8428
8429
8430 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8431                                     struct p2p_nfc_params *params,
8432                                     int forced_freq)
8433 {
8434         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8435                    "connection handover");
8436         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8437                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8438                                 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8439                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8440                                 NULL, 0);
8441 }
8442
8443
8444 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8445                                     struct p2p_nfc_params *params,
8446                                     int forced_freq)
8447 {
8448         int res;
8449
8450         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8451                    "connection handover");
8452         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8453                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8454                                forced_freq, wpa_s->p2p_go_vht_center_freq2,
8455                                -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8456                                NULL, 0);
8457         if (res)
8458                 return res;
8459
8460         res = wpas_p2p_listen(wpa_s, 60);
8461         if (res) {
8462                 p2p_unauthorize(wpa_s->global->p2p,
8463                                 params->peer->p2p_device_addr);
8464         }
8465
8466         return res;
8467 }
8468
8469
8470 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8471                                             const struct wpabuf *data,
8472                                             int sel, int tag, int forced_freq)
8473 {
8474         const u8 *pos, *end;
8475         u16 len, id;
8476         struct p2p_nfc_params params;
8477         int res;
8478
8479         os_memset(&params, 0, sizeof(params));
8480         params.sel = sel;
8481
8482         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8483
8484         pos = wpabuf_head(data);
8485         end = pos + wpabuf_len(data);
8486
8487         if (end - pos < 2) {
8488                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8489                            "attributes");
8490                 return -1;
8491         }
8492         len = WPA_GET_BE16(pos);
8493         pos += 2;
8494         if (len > end - pos) {
8495                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8496                            "attributes");
8497                 return -1;
8498         }
8499         params.wsc_attr = pos;
8500         params.wsc_len = len;
8501         pos += len;
8502
8503         if (end - pos < 2) {
8504                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8505                            "attributes");
8506                 return -1;
8507         }
8508         len = WPA_GET_BE16(pos);
8509         pos += 2;
8510         if (len > end - pos) {
8511                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8512                            "attributes");
8513                 return -1;
8514         }
8515         params.p2p_attr = pos;
8516         params.p2p_len = len;
8517         pos += len;
8518
8519         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8520                     params.wsc_attr, params.wsc_len);
8521         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8522                     params.p2p_attr, params.p2p_len);
8523         if (pos < end) {
8524                 wpa_hexdump(MSG_DEBUG,
8525                             "P2P: Ignored extra data after P2P attributes",
8526                             pos, end - pos);
8527         }
8528
8529         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8530         if (res)
8531                 return res;
8532
8533         if (params.next_step == NO_ACTION)
8534                 return 0;
8535
8536         if (params.next_step == BOTH_GO) {
8537                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8538                         MAC2STR(params.peer->p2p_device_addr));
8539                 return 0;
8540         }
8541
8542         if (params.next_step == PEER_CLIENT) {
8543                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8544                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8545                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8546                                 " ssid=\"%s\"",
8547                                 MAC2STR(params.peer->p2p_device_addr),
8548                                 params.go_freq,
8549                                 MAC2STR(params.go_dev_addr),
8550                                 wpa_ssid_txt(params.go_ssid,
8551                                              params.go_ssid_len));
8552                 } else {
8553                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8554                                 "peer=" MACSTR " freq=%d",
8555                                 MAC2STR(params.peer->p2p_device_addr),
8556                                 params.go_freq);
8557                 }
8558                 return 0;
8559         }
8560
8561         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8562                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8563                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8564                 return 0;
8565         }
8566
8567         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8568         wpa_s->p2p_oob_dev_pw = NULL;
8569
8570         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8571                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8572                            "received");
8573                 return -1;
8574         }
8575
8576         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8577         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8578         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8579                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8580         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8581                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8582         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8583
8584         if (tag) {
8585                 if (id < 0x10) {
8586                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8587                                    "peer OOB Device Password Id %u", id);
8588                         return -1;
8589                 }
8590                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8591                            "Device Password Id %u", id);
8592                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
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                 wpa_s->p2p_oob_dev_pw_id = id;
8597                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8598                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8599                         params.oob_dev_pw_len -
8600                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8601                 if (wpa_s->p2p_oob_dev_pw == NULL)
8602                         return -1;
8603
8604                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8605                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8606                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8607                         return -1;
8608         } else {
8609                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8610                            "without Device Password");
8611                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8612         }
8613
8614         switch (params.next_step) {
8615         case NO_ACTION:
8616         case BOTH_GO:
8617         case PEER_CLIENT:
8618                 /* already covered above */
8619                 return 0;
8620         case JOIN_GROUP:
8621                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8622         case AUTH_JOIN:
8623                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8624         case INIT_GO_NEG:
8625                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8626         case RESP_GO_NEG:
8627                 /* TODO: use own OOB Dev Pw */
8628                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8629         }
8630
8631         return -1;
8632 }
8633
8634
8635 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8636                              const struct wpabuf *data, int forced_freq)
8637 {
8638         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8639                 return -1;
8640
8641         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8642 }
8643
8644
8645 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8646                                  const struct wpabuf *req,
8647                                  const struct wpabuf *sel, int forced_freq)
8648 {
8649         struct wpabuf *tmp;
8650         int ret;
8651
8652         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8653                 return -1;
8654
8655         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8656
8657         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8658                           wpabuf_head(req), wpabuf_len(req));
8659         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8660                           wpabuf_head(sel), wpabuf_len(sel));
8661         if (forced_freq)
8662                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8663         tmp = ndef_parse_p2p(init ? sel : req);
8664         if (tmp == NULL) {
8665                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8666                 return -1;
8667         }
8668
8669         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8670                                                forced_freq);
8671         wpabuf_free(tmp);
8672
8673         return ret;
8674 }
8675
8676
8677 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8678 {
8679         const u8 *if_addr;
8680         int go_intent = wpa_s->conf->p2p_go_intent;
8681         struct wpa_supplicant *iface;
8682
8683         if (wpa_s->global->p2p == NULL)
8684                 return -1;
8685
8686         if (!enabled) {
8687                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8688                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8689                 {
8690                         if (!iface->ap_iface)
8691                                 continue;
8692                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8693                 }
8694                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8695                                                  0, NULL);
8696                 if (wpa_s->p2p_nfc_tag_enabled)
8697                         wpas_p2p_remove_pending_group_interface(wpa_s);
8698                 wpa_s->p2p_nfc_tag_enabled = 0;
8699                 return 0;
8700         }
8701
8702         if (wpa_s->global->p2p_disabled)
8703                 return -1;
8704
8705         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8706             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8707             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8708             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8709                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8710                            "to allow static handover cases");
8711                 return -1;
8712         }
8713
8714         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8715
8716         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8717         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8718         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8719         if (wpa_s->p2p_oob_dev_pw == NULL)
8720                 return -1;
8721         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8722
8723         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8724             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8725                 /*
8726                  * P2P Group Interface present and the command came on group
8727                  * interface, so enable the token for the current interface.
8728                  */
8729                 wpa_s->create_p2p_iface = 0;
8730         } else {
8731                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8732         }
8733
8734         if (wpa_s->create_p2p_iface) {
8735                 enum wpa_driver_if_type iftype;
8736                 /* Prepare to add a new interface for the group */
8737                 iftype = WPA_IF_P2P_GROUP;
8738                 if (go_intent == 15)
8739                         iftype = WPA_IF_P2P_GO;
8740                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8741                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8742                                    "interface for the group");
8743                         return -1;
8744                 }
8745
8746                 if_addr = wpa_s->pending_interface_addr;
8747         } else if (wpa_s->p2p_mgmt)
8748                 if_addr = wpa_s->parent->own_addr;
8749         else
8750                 if_addr = wpa_s->own_addr;
8751
8752         wpa_s->p2p_nfc_tag_enabled = enabled;
8753
8754         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8755                 struct hostapd_data *hapd;
8756                 if (iface->ap_iface == NULL)
8757                         continue;
8758                 hapd = iface->ap_iface->bss[0];
8759                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8760                 hapd->conf->wps_nfc_dh_pubkey =
8761                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8762                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8763                 hapd->conf->wps_nfc_dh_privkey =
8764                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8765                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8766                 hapd->conf->wps_nfc_dev_pw =
8767                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8768                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8769
8770                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8771                         wpa_dbg(iface, MSG_DEBUG,
8772                                 "P2P: Failed to enable NFC Tag for GO");
8773                 }
8774         }
8775         p2p_set_authorized_oob_dev_pw_id(
8776                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8777                 if_addr);
8778
8779         return 0;
8780 }
8781
8782 #endif /* CONFIG_WPS_NFC */
8783
8784
8785 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8786                                              struct wpa_used_freq_data *freqs,
8787                                              unsigned int num)
8788 {
8789         u8 curr_chan, cand, chan;
8790         unsigned int i;
8791
8792         /*
8793          * If possible, optimize the Listen channel to be a channel that is
8794          * already used by one of the other interfaces.
8795          */
8796         if (!wpa_s->conf->p2p_optimize_listen_chan)
8797                 return;
8798
8799         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8800                 return;
8801
8802         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8803         for (i = 0, cand = 0; i < num; i++) {
8804                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8805                 if (curr_chan == chan) {
8806                         cand = 0;
8807                         break;
8808                 }
8809
8810                 if (chan == 1 || chan == 6 || chan == 11)
8811                         cand = chan;
8812         }
8813
8814         if (cand) {
8815                 wpa_dbg(wpa_s, MSG_DEBUG,
8816                         "P2P: Update Listen channel to %u based on operating channel",
8817                         cand);
8818                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8819         }
8820 }
8821
8822
8823 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8824 {
8825         struct hostapd_config *conf;
8826         struct p2p_go_neg_results params;
8827         struct csa_settings csa_settings;
8828         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8829         int old_freq = current_ssid->frequency;
8830         int ret;
8831
8832         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8833                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8834                 return -1;
8835         }
8836
8837         /*
8838          * TODO: This function may not always work correctly. For example,
8839          * when we have a running GO and a BSS on a DFS channel.
8840          */
8841         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8842                 wpa_dbg(wpa_s, MSG_DEBUG,
8843                         "P2P CSA: Failed to select new frequency for GO");
8844                 return -1;
8845         }
8846
8847         if (current_ssid->frequency == params.freq) {
8848                 wpa_dbg(wpa_s, MSG_DEBUG,
8849                         "P2P CSA: Selected same frequency - not moving GO");
8850                 return 0;
8851         }
8852
8853         conf = hostapd_config_defaults();
8854         if (!conf) {
8855                 wpa_dbg(wpa_s, MSG_DEBUG,
8856                         "P2P CSA: Failed to allocate default config");
8857                 return -1;
8858         }
8859
8860         current_ssid->frequency = params.freq;
8861         if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
8862                 wpa_dbg(wpa_s, MSG_DEBUG,
8863                         "P2P CSA: Failed to create new GO config");
8864                 ret = -1;
8865                 goto out;
8866         }
8867
8868         if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
8869                 wpa_dbg(wpa_s, MSG_DEBUG,
8870                         "P2P CSA: CSA to a different band is not supported");
8871                 ret = -1;
8872                 goto out;
8873         }
8874
8875         os_memset(&csa_settings, 0, sizeof(csa_settings));
8876         csa_settings.cs_count = P2P_GO_CSA_COUNT;
8877         csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
8878         csa_settings.freq_params.freq = params.freq;
8879         csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
8880         csa_settings.freq_params.ht_enabled = conf->ieee80211n;
8881         csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
8882
8883         if (conf->ieee80211ac) {
8884                 int freq1 = 0, freq2 = 0;
8885                 u8 chan, opclass;
8886
8887                 if (ieee80211_freq_to_channel_ext(params.freq,
8888                                                   conf->secondary_channel,
8889                                                   conf->vht_oper_chwidth,
8890                                                   &opclass, &chan) ==
8891                     NUM_HOSTAPD_MODES) {
8892                         wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
8893                         ret = -1;
8894                         goto out;
8895                 }
8896
8897                 if (conf->vht_oper_centr_freq_seg0_idx)
8898                         freq1 = ieee80211_chan_to_freq(
8899                                 NULL, opclass,
8900                                 conf->vht_oper_centr_freq_seg0_idx);
8901
8902                 if (conf->vht_oper_centr_freq_seg1_idx)
8903                         freq2 = ieee80211_chan_to_freq(
8904                                 NULL, opclass,
8905                                 conf->vht_oper_centr_freq_seg1_idx);
8906
8907                 if (freq1 < 0 || freq2 < 0) {
8908                         wpa_dbg(wpa_s, MSG_DEBUG,
8909                                 "P2P CSA: Selected invalid VHT center freqs");
8910                         ret = -1;
8911                         goto out;
8912                 }
8913
8914                 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
8915                 csa_settings.freq_params.center_freq1 = freq1;
8916                 csa_settings.freq_params.center_freq2 = freq2;
8917
8918                 switch (conf->vht_oper_chwidth) {
8919                 case VHT_CHANWIDTH_80MHZ:
8920                 case VHT_CHANWIDTH_80P80MHZ:
8921                         csa_settings.freq_params.bandwidth = 80;
8922                         break;
8923                 case VHT_CHANWIDTH_160MHZ:
8924                         csa_settings.freq_params.bandwidth = 160;
8925                         break;
8926                 }
8927         }
8928
8929         ret = ap_switch_channel(wpa_s, &csa_settings);
8930 out:
8931         current_ssid->frequency = old_freq;
8932         hostapd_config_free(conf);
8933         return ret;
8934 }
8935
8936
8937 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8938 {
8939         struct p2p_go_neg_results params;
8940         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8941
8942         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8943
8944         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8945                 current_ssid->frequency);
8946
8947         /* Stop the AP functionality */
8948         /* TODO: Should do this in a way that does not indicated to possible
8949          * P2P Clients in the group that the group is terminated. */
8950         wpa_supplicant_ap_deinit(wpa_s);
8951
8952         /* Reselect the GO frequency */
8953         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8954                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8955                 wpas_p2p_group_delete(wpa_s,
8956                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8957                 return;
8958         }
8959         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8960                 params.freq);
8961
8962         if (params.freq &&
8963             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8964                 wpa_printf(MSG_DEBUG,
8965                            "P2P: Selected freq (%u MHz) is not valid for P2P",
8966                            params.freq);
8967                 wpas_p2p_group_delete(wpa_s,
8968                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8969                 return;
8970         }
8971
8972         /* Update the frequency */
8973         current_ssid->frequency = params.freq;
8974         wpa_s->connect_without_scan = current_ssid;
8975         wpa_s->reassociate = 1;
8976         wpa_s->disconnected = 0;
8977         wpa_supplicant_req_scan(wpa_s, 0, 0);
8978 }
8979
8980
8981 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8982 {
8983         struct wpa_supplicant *wpa_s = eloop_ctx;
8984
8985         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8986                 return;
8987
8988         wpas_p2p_go_update_common_freqs(wpa_s);
8989
8990         /* Do not move GO in the middle of a CSA */
8991         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8992                 wpa_printf(MSG_DEBUG,
8993                            "P2P: CSA is in progress - not moving GO");
8994                 return;
8995         }
8996
8997         /*
8998          * First, try a channel switch flow. If it is not supported or fails,
8999          * take down the GO and bring it up again.
9000          */
9001         if (wpas_p2p_move_go_csa(wpa_s) < 0)
9002                 wpas_p2p_move_go_no_csa(wpa_s);
9003 }
9004
9005
9006 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
9007 {
9008         struct wpa_supplicant *wpa_s = eloop_ctx;
9009         struct wpa_used_freq_data *freqs = NULL;
9010         unsigned int num = wpa_s->num_multichan_concurrent;
9011
9012         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
9013         if (!freqs)
9014                 return;
9015
9016         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
9017
9018         /* Previous attempt to move a GO was not possible -- try again. */
9019         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
9020                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
9021
9022         os_free(freqs);
9023 }
9024
9025
9026 /*
9027  * Consider moving a GO from its currently used frequency:
9028  * 1. It is possible that due to regulatory consideration the frequency
9029  *    can no longer be used and there is a need to evacuate the GO.
9030  * 2. It is possible that due to MCC considerations, it would be preferable
9031  *    to move the GO to a channel that is currently used by some other
9032  *    station interface.
9033  *
9034  * In case a frequency that became invalid is once again valid, cancel a
9035  * previously initiated GO frequency change.
9036  */
9037 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
9038                                             struct wpa_used_freq_data *freqs,
9039                                             unsigned int num)
9040 {
9041         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
9042         unsigned int timeout;
9043         int freq;
9044
9045         wpas_p2p_go_update_common_freqs(wpa_s);
9046
9047         freq = wpa_s->current_ssid->frequency;
9048         for (i = 0, invalid_freq = 0; i < num; i++) {
9049                 if (freqs[i].freq == freq) {
9050                         flags = freqs[i].flags;
9051
9052                         /* The channel is invalid, must change it */
9053                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
9054                                 wpa_dbg(wpa_s, MSG_DEBUG,
9055                                         "P2P: Freq=%d MHz no longer valid for GO",
9056                                         freq);
9057                                 invalid_freq = 1;
9058                         }
9059                 } else if (freqs[i].flags == 0) {
9060                         /* Freq is not used by any other station interface */
9061                         continue;
9062                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
9063                                                freqs[i].freq)) {
9064                         /* Freq is not valid for P2P use cases */
9065                         continue;
9066                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9067                            P2P_GO_FREQ_MOVE_SCM) {
9068                         policy_move = 1;
9069                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9070                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
9071                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9072                         policy_move = 1;
9073                 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
9074                             P2P_GO_FREQ_MOVE_SCM_ECSA) &&
9075                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9076                         if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
9077                                 policy_move = 1;
9078                         } else if ((wpa_s->drv_flags &
9079                                     WPA_DRIVER_FLAGS_AP_CSA) &&
9080                                    wpas_p2p_go_clients_support_ecsa(wpa_s)) {
9081                                 u8 chan;
9082
9083                                 /*
9084                                  * We do not support CSA between bands, so move
9085                                  * GO only within the same band.
9086                                  */
9087                                 if (wpa_s->ap_iface->current_mode->mode ==
9088                                     ieee80211_freq_to_chan(freqs[i].freq,
9089                                                            &chan))
9090                                         policy_move = 1;
9091                         }
9092                 }
9093         }
9094
9095         wpa_dbg(wpa_s, MSG_DEBUG,
9096                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9097                 invalid_freq, policy_move, flags);
9098
9099         /*
9100          * The channel is valid, or we are going to have a policy move, so
9101          * cancel timeout.
9102          */
9103         if (!invalid_freq || policy_move) {
9104                 wpa_dbg(wpa_s, MSG_DEBUG,
9105                         "P2P: Cancel a GO move from freq=%d MHz", freq);
9106                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9107
9108                 if (wpas_p2p_in_progress(wpa_s)) {
9109                         wpa_dbg(wpa_s, MSG_DEBUG,
9110                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9111                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9112                                              wpa_s, NULL);
9113                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9114                                                wpas_p2p_reconsider_moving_go,
9115                                                wpa_s, NULL);
9116                         return;
9117                 }
9118         }
9119
9120         if (!invalid_freq && (!policy_move || flags != 0)) {
9121                 wpa_dbg(wpa_s, MSG_DEBUG,
9122                         "P2P: Not initiating a GO frequency change");
9123                 return;
9124         }
9125
9126         /*
9127          * Do not consider moving GO if it is in the middle of a CSA. When the
9128          * CSA is finished this flow should be retriggered.
9129          */
9130         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9131                 wpa_dbg(wpa_s, MSG_DEBUG,
9132                         "P2P: Not initiating a GO frequency change - CSA is in progress");
9133                 return;
9134         }
9135
9136         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9137                 timeout = P2P_GO_FREQ_CHANGE_TIME;
9138         else
9139                 timeout = 0;
9140
9141         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9142                 freq, timeout);
9143         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9144         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9145 }
9146
9147
9148 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9149                                          struct wpa_used_freq_data *freqs,
9150                                          unsigned int num,
9151                                          enum wpas_p2p_channel_update_trig trig)
9152 {
9153         struct wpa_supplicant *ifs;
9154
9155         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9156                              NULL);
9157
9158         /*
9159          * Travers all the radio interfaces, and for each GO interface, check
9160          * if there is a need to move the GO from the frequency it is using,
9161          * or in case the frequency is valid again, cancel the evacuation flow.
9162          */
9163         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9164                          radio_list) {
9165                 if (ifs->current_ssid == NULL ||
9166                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9167                         continue;
9168
9169                 /*
9170                  * The GO was just started or completed channel switch, no need
9171                  * to move it.
9172                  */
9173                 if (wpa_s == ifs &&
9174                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9175                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9176                         wpa_dbg(wpa_s, MSG_DEBUG,
9177                                 "P2P: GO move - schedule re-consideration");
9178                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9179                                                wpas_p2p_reconsider_moving_go,
9180                                                wpa_s, NULL);
9181                         continue;
9182                 }
9183
9184                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9185         }
9186 }
9187
9188
9189 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9190 {
9191         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9192                 return;
9193
9194         wpas_p2p_update_channel_list(wpa_s,
9195                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9196 }
9197
9198
9199 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9200 {
9201         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9202                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9203                         "the management interface is being removed");
9204                 wpas_p2p_deinit_global(wpa_s->global);
9205         }
9206 }
9207
9208
9209 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9210 {
9211         if (wpa_s->ap_iface->bss)
9212                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9213         wpas_p2p_group_deinit(wpa_s);
9214 }
9215
9216
9217 int wpas_p2p_lo_start(struct wpa_supplicant *wpa_s, unsigned int freq,
9218                       unsigned int period, unsigned int interval,
9219                       unsigned int count)
9220 {
9221         struct p2p_data *p2p = wpa_s->global->p2p;
9222         u8 *device_types;
9223         size_t dev_types_len;
9224         struct wpabuf *buf;
9225         int ret;
9226
9227         if (wpa_s->p2p_lo_started) {
9228                 wpa_dbg(wpa_s, MSG_DEBUG,
9229                         "P2P Listen offload is already started");
9230                 return 0;
9231         }
9232
9233         if (wpa_s->global->p2p == NULL ||
9234             !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_LISTEN_OFFLOAD)) {
9235                 wpa_printf(MSG_DEBUG, "P2P: Listen offload not supported");
9236                 return -1;
9237         }
9238
9239         if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
9240                 wpa_printf(MSG_ERROR, "P2P: Input channel not supported: %u",
9241                            freq);
9242                 return -1;
9243         }
9244
9245         /* Get device type */
9246         dev_types_len = (wpa_s->conf->num_sec_device_types + 1) *
9247                 WPS_DEV_TYPE_LEN;
9248         device_types = os_malloc(dev_types_len);
9249         if (!device_types)
9250                 return -1;
9251         os_memcpy(device_types, wpa_s->conf->device_type, WPS_DEV_TYPE_LEN);
9252         os_memcpy(&device_types[WPS_DEV_TYPE_LEN], wpa_s->conf->sec_device_type,
9253                   wpa_s->conf->num_sec_device_types * WPS_DEV_TYPE_LEN);
9254
9255         /* Get Probe Response IE(s) */
9256         buf = p2p_build_probe_resp_template(p2p, freq);
9257         if (!buf) {
9258                 os_free(device_types);
9259                 return -1;
9260         }
9261
9262         ret = wpa_drv_p2p_lo_start(wpa_s, freq, period, interval, count,
9263                                    device_types, dev_types_len,
9264                                    wpabuf_mhead_u8(buf), wpabuf_len(buf));
9265         if (ret < 0)
9266                 wpa_dbg(wpa_s, MSG_DEBUG,
9267                         "P2P: Failed to start P2P listen offload");
9268
9269         os_free(device_types);
9270         wpabuf_free(buf);
9271
9272         if (ret == 0) {
9273                 wpa_s->p2p_lo_started = 1;
9274
9275                 /* Stop current P2P listen if any */
9276                 wpas_stop_listen(wpa_s);
9277         }
9278
9279         return ret;
9280 }
9281
9282
9283 int wpas_p2p_lo_stop(struct wpa_supplicant *wpa_s)
9284 {
9285         int ret;
9286
9287         if (!wpa_s->p2p_lo_started)
9288                 return 0;
9289
9290         ret = wpa_drv_p2p_lo_stop(wpa_s);
9291         if (ret < 0)
9292                 wpa_dbg(wpa_s, MSG_DEBUG,
9293                         "P2P: Failed to stop P2P listen offload");
9294
9295         wpa_s->p2p_lo_started = 0;
9296         return ret;
9297 }