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  52  * it is currently using, but is no longer valid for P2P use cases.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  57  * Defines CSA parameters which are used when GO evacuates the no longer valid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->pairwise_cipher = WPA_CIPHER_CCMP;
1138         s->export_keys = 1;
1139         if (ssid->passphrase) {
1140                 os_free(s->passphrase);
1141                 s->passphrase = os_strdup(ssid->passphrase);
1142         }
1143         if (ssid->psk_set) {
1144                 s->psk_set = 1;
1145                 os_memcpy(s->psk, ssid->psk, 32);
1146         }
1147         if (s->passphrase && !s->psk_set)
1148                 wpa_config_update_psk(s);
1149         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1150                 os_free(s->ssid);
1151                 s->ssid = os_malloc(ssid->ssid_len);
1152         }
1153         if (s->ssid) {
1154                 s->ssid_len = ssid->ssid_len;
1155                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1156         }
1157         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1158                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1159                 wpa_s->global->add_psk = NULL;
1160                 changed = 1;
1161         }
1162
1163         if (changed && wpa_s->conf->update_config &&
1164             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1165                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1166         }
1167
1168         return s->id;
1169 }
1170
1171
1172 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1173                                                  const u8 *addr)
1174 {
1175         struct wpa_ssid *ssid, *s;
1176         u8 *n;
1177         size_t i;
1178         int found = 0;
1179         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1180
1181         ssid = wpa_s->current_ssid;
1182         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1183             !ssid->p2p_persistent_group)
1184                 return;
1185
1186         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1187                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1188                         continue;
1189
1190                 if (s->ssid_len == ssid->ssid_len &&
1191                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1192                         break;
1193         }
1194
1195         if (s == NULL)
1196                 return;
1197
1198         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1199                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1200                               ETH_ALEN) != 0)
1201                         continue;
1202
1203                 if (i == s->num_p2p_clients - 1)
1204                         return; /* already the most recent entry */
1205
1206                 /* move the entry to mark it most recent */
1207                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1208                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1209                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1210                 os_memcpy(s->p2p_client_list +
1211                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1212                           ETH_ALEN);
1213                 os_memset(s->p2p_client_list +
1214                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1215                           0xff, ETH_ALEN);
1216                 found = 1;
1217                 break;
1218         }
1219
1220         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1221                 n = os_realloc_array(s->p2p_client_list,
1222                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1223                 if (n == NULL)
1224                         return;
1225                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1226                           ETH_ALEN);
1227                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1228                           0xff, ETH_ALEN);
1229                 s->p2p_client_list = n;
1230                 s->num_p2p_clients++;
1231         } else if (!found && s->p2p_client_list) {
1232                 /* Not enough room for an additional entry - drop the oldest
1233                  * entry */
1234                 os_memmove(s->p2p_client_list,
1235                            s->p2p_client_list + 2 * ETH_ALEN,
1236                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1237                 os_memcpy(s->p2p_client_list +
1238                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1239                           addr, ETH_ALEN);
1240                 os_memset(s->p2p_client_list +
1241                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1242                           0xff, ETH_ALEN);
1243         }
1244
1245         if (p2p_wpa_s->conf->update_config &&
1246             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1247                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1248 }
1249
1250
1251 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1252                                    int go, struct wpa_ssid *ssid, int freq,
1253                                    const u8 *psk, const char *passphrase,
1254                                    const u8 *go_dev_addr, int persistent,
1255                                    const char *extra)
1256 {
1257         const char *ssid_txt;
1258         char psk_txt[65];
1259
1260         if (psk)
1261                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1262         else
1263                 psk_txt[0] = '\0';
1264
1265         if (ssid)
1266                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1267         else
1268                 ssid_txt = "";
1269
1270         if (passphrase && passphrase[0] == '\0')
1271                 passphrase = NULL;
1272
1273         /*
1274          * Include PSK/passphrase only in the control interface message and
1275          * leave it out from the debug log entry.
1276          */
1277         wpa_msg_global_ctrl(wpa_s->p2pdev, MSG_INFO,
1278                             P2P_EVENT_GROUP_STARTED
1279                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1280                             MACSTR "%s%s",
1281                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1282                             psk ? " psk=" : "", psk_txt,
1283                             passphrase ? " passphrase=\"" : "",
1284                             passphrase ? passphrase : "",
1285                             passphrase ? "\"" : "",
1286                             MAC2STR(go_dev_addr),
1287                             persistent ? " [PERSISTENT]" : "", extra);
1288         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1289                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1290                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1291                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1292                    extra);
1293 }
1294
1295
1296 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1297                                            int success, int already_deleted)
1298 {
1299         struct wpa_ssid *ssid;
1300         int client;
1301         int persistent;
1302         u8 go_dev_addr[ETH_ALEN];
1303         int network_id = -1;
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                 network_id = 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         if (network_id < 0 && ssid)
1385                 network_id = ssid->id;
1386         if (!client) {
1387                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1388                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1389         }
1390 }
1391
1392
1393 struct send_action_work {
1394         unsigned int freq;
1395         u8 dst[ETH_ALEN];
1396         u8 src[ETH_ALEN];
1397         u8 bssid[ETH_ALEN];
1398         size_t len;
1399         unsigned int wait_time;
1400         u8 buf[0];
1401 };
1402
1403
1404 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s)
1405 {
1406         struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx;
1407
1408         wpa_printf(MSG_DEBUG,
1409                    "P2P: Free Action frame radio work @%p (freq=%u dst="
1410                    MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)",
1411                    wpa_s->p2p_send_action_work, awork->freq,
1412                    MAC2STR(awork->dst), MAC2STR(awork->src),
1413                    MAC2STR(awork->bssid), awork->wait_time);
1414         wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame",
1415                     awork->buf, awork->len);
1416         os_free(awork);
1417         wpa_s->p2p_send_action_work->ctx = NULL;
1418         radio_work_done(wpa_s->p2p_send_action_work);
1419         wpa_s->p2p_send_action_work = NULL;
1420 }
1421
1422
1423 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1424                                               void *timeout_ctx)
1425 {
1426         struct wpa_supplicant *wpa_s = eloop_ctx;
1427
1428         if (!wpa_s->p2p_send_action_work)
1429                 return;
1430
1431         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1432         wpas_p2p_free_send_action_work(wpa_s);
1433 }
1434
1435
1436 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1437 {
1438         if (wpa_s->p2p_send_action_work) {
1439                 struct send_action_work *awork;
1440
1441                 awork = wpa_s->p2p_send_action_work->ctx;
1442                 wpa_printf(MSG_DEBUG,
1443                            "P2P: Clear Action TX work @%p (wait_time=%u)",
1444                            wpa_s->p2p_send_action_work, awork->wait_time);
1445                 if (awork->wait_time == 0) {
1446                         wpas_p2p_free_send_action_work(wpa_s);
1447                 } else {
1448                         /*
1449                          * In theory, this should not be needed, but number of
1450                          * places in the P2P code is still using non-zero wait
1451                          * time for the last Action frame in the sequence and
1452                          * some of these do not call send_action_done().
1453                          */
1454                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1455                                              wpa_s, NULL);
1456                         eloop_register_timeout(
1457                                 0, awork->wait_time * 1000,
1458                                 wpas_p2p_send_action_work_timeout,
1459                                 wpa_s, NULL);
1460                 }
1461         }
1462 }
1463
1464
1465 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1466                                            unsigned int freq,
1467                                            const u8 *dst, const u8 *src,
1468                                            const u8 *bssid,
1469                                            const u8 *data, size_t data_len,
1470                                            enum offchannel_send_action_result
1471                                            result)
1472 {
1473         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1474
1475         wpas_p2p_action_tx_clear(wpa_s);
1476
1477         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1478                 return;
1479
1480         switch (result) {
1481         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1482                 res = P2P_SEND_ACTION_SUCCESS;
1483                 break;
1484         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1485                 res = P2P_SEND_ACTION_NO_ACK;
1486                 break;
1487         case OFFCHANNEL_SEND_ACTION_FAILED:
1488                 res = P2P_SEND_ACTION_FAILED;
1489                 break;
1490         }
1491
1492         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1493
1494         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1495             wpa_s->pending_pd_before_join &&
1496             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1497              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1498             wpa_s->p2p_fallback_to_go_neg) {
1499                 wpa_s->pending_pd_before_join = 0;
1500                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1501                         "during p2p_connect-auto");
1502                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1503                                P2P_EVENT_FALLBACK_TO_GO_NEG
1504                                "reason=no-ACK-to-PD-Req");
1505                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1506                 return;
1507         }
1508 }
1509
1510
1511 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1512 {
1513         struct wpa_supplicant *wpa_s = work->wpa_s;
1514         struct send_action_work *awork = work->ctx;
1515
1516         if (deinit) {
1517                 if (work->started) {
1518                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1519                                              wpa_s, NULL);
1520                         wpa_s->p2p_send_action_work = NULL;
1521                         offchannel_send_action_done(wpa_s);
1522                 }
1523                 os_free(awork);
1524                 return;
1525         }
1526
1527         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1528                                    awork->bssid, awork->buf, awork->len,
1529                                    awork->wait_time,
1530                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1531                 os_free(awork);
1532                 radio_work_done(work);
1533                 return;
1534         }
1535         wpa_s->p2p_send_action_work = work;
1536 }
1537
1538
1539 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1540                                  unsigned int freq, const u8 *dst,
1541                                  const u8 *src, const u8 *bssid, const u8 *buf,
1542                                  size_t len, unsigned int wait_time)
1543 {
1544         struct send_action_work *awork;
1545
1546         if (wpa_s->p2p_send_action_work) {
1547                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1548                 return -1;
1549         }
1550
1551         awork = os_zalloc(sizeof(*awork) + len);
1552         if (awork == NULL)
1553                 return -1;
1554
1555         awork->freq = freq;
1556         os_memcpy(awork->dst, dst, ETH_ALEN);
1557         os_memcpy(awork->src, src, ETH_ALEN);
1558         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1559         awork->len = len;
1560         awork->wait_time = wait_time;
1561         os_memcpy(awork->buf, buf, len);
1562
1563         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1564                            wpas_send_action_cb, awork) < 0) {
1565                 os_free(awork);
1566                 return -1;
1567         }
1568
1569         return 0;
1570 }
1571
1572
1573 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1574                             const u8 *src, const u8 *bssid, const u8 *buf,
1575                             size_t len, unsigned int wait_time)
1576 {
1577         struct wpa_supplicant *wpa_s = ctx;
1578         int listen_freq = -1, send_freq = -1;
1579
1580         if (wpa_s->p2p_listen_work)
1581                 listen_freq = wpa_s->p2p_listen_work->freq;
1582         if (wpa_s->p2p_send_action_work)
1583                 send_freq = wpa_s->p2p_send_action_work->freq;
1584         if (listen_freq != (int) freq && send_freq != (int) freq) {
1585                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1586                            listen_freq, send_freq);
1587                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1588                                              len, wait_time);
1589         }
1590
1591         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1592         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1593                                       wait_time,
1594                                       wpas_p2p_send_action_tx_status, 1);
1595 }
1596
1597
1598 static void wpas_send_action_done(void *ctx)
1599 {
1600         struct wpa_supplicant *wpa_s = ctx;
1601
1602         if (wpa_s->p2p_send_action_work) {
1603                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1604                                      wpa_s, NULL);
1605                 os_free(wpa_s->p2p_send_action_work->ctx);
1606                 radio_work_done(wpa_s->p2p_send_action_work);
1607                 wpa_s->p2p_send_action_work = NULL;
1608         }
1609
1610         offchannel_send_action_done(wpa_s);
1611 }
1612
1613
1614 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1615                                     struct p2p_go_neg_results *params)
1616 {
1617         if (wpa_s->go_params == NULL) {
1618                 wpa_s->go_params = os_malloc(sizeof(*params));
1619                 if (wpa_s->go_params == NULL)
1620                         return -1;
1621         }
1622         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1623         return 0;
1624 }
1625
1626
1627 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1628                                     struct p2p_go_neg_results *res)
1629 {
1630         wpa_s->group_formation_reported = 0;
1631         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1632                    " dev_addr " MACSTR " wps_method %d",
1633                    MAC2STR(res->peer_interface_addr),
1634                    MAC2STR(res->peer_device_addr), res->wps_method);
1635         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1636                           res->ssid, res->ssid_len);
1637         wpa_supplicant_ap_deinit(wpa_s);
1638         wpas_copy_go_neg_results(wpa_s, res);
1639         if (res->wps_method == WPS_PBC) {
1640                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1641 #ifdef CONFIG_WPS_NFC
1642         } else if (res->wps_method == WPS_NFC) {
1643                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1644                                    res->peer_interface_addr,
1645                                    wpa_s->p2pdev->p2p_oob_dev_pw,
1646                                    wpa_s->p2pdev->p2p_oob_dev_pw_id, 1,
1647                                    wpa_s->p2pdev->p2p_oob_dev_pw_id ==
1648                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1649                                    wpa_s->p2pdev->p2p_peer_oob_pubkey_hash :
1650                                    NULL,
1651                                    NULL, 0, 0);
1652 #endif /* CONFIG_WPS_NFC */
1653         } else {
1654                 u16 dev_pw_id = DEV_PW_DEFAULT;
1655                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1656                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1657                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1658                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1659                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1660                                    wpa_s->p2p_pin, 1, dev_pw_id);
1661         }
1662 }
1663
1664
1665 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1666                                   struct wpa_ssid *ssid)
1667 {
1668         struct wpa_ssid *persistent;
1669         struct psk_list_entry *psk;
1670         struct hostapd_data *hapd;
1671
1672         if (!wpa_s->ap_iface)
1673                 return;
1674
1675         persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
1676                                              ssid->ssid_len);
1677         if (persistent == NULL)
1678                 return;
1679
1680         hapd = wpa_s->ap_iface->bss[0];
1681
1682         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1683                          list) {
1684                 struct hostapd_wpa_psk *hpsk;
1685
1686                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1687                         MACSTR " psk=%d",
1688                         MAC2STR(psk->addr), psk->p2p);
1689                 hpsk = os_zalloc(sizeof(*hpsk));
1690                 if (hpsk == NULL)
1691                         break;
1692                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1693                 if (psk->p2p)
1694                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1695                 else
1696                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1697                 hpsk->next = hapd->conf->ssid.wpa_psk;
1698                 hapd->conf->ssid.wpa_psk = hpsk;
1699         }
1700 }
1701
1702
1703 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1704 {
1705         unsigned int i;
1706
1707         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1708                 wpa_s->p2p_group_common_freqs_num);
1709
1710         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1711                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1712                         i, wpa_s->p2p_group_common_freqs[i]);
1713 }
1714
1715
1716 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1717                                            struct p2p_go_neg_results *params)
1718 {
1719         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1720
1721         wpa_s->p2p_group_common_freqs_num = 0;
1722         os_free(wpa_s->p2p_group_common_freqs);
1723         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1724         if (!wpa_s->p2p_group_common_freqs)
1725                 return;
1726
1727         for (i = 0; i < len; i++) {
1728                 if (!wpa_s->go_params->freq_list[i])
1729                         break;
1730                 wpa_s->p2p_group_common_freqs[i] =
1731                         wpa_s->go_params->freq_list[i];
1732         }
1733         wpa_s->p2p_group_common_freqs_num = i;
1734 }
1735
1736
1737 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1738 {
1739 #ifndef CONFIG_NO_CONFIG_WRITE
1740         if (wpa_s->p2pdev->conf->update_config &&
1741             wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
1742                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1743 #endif /* CONFIG_NO_CONFIG_WRITE */
1744 }
1745
1746
1747 static void p2p_go_configured(void *ctx, void *data)
1748 {
1749         struct wpa_supplicant *wpa_s = ctx;
1750         struct p2p_go_neg_results *params = data;
1751         struct wpa_ssid *ssid;
1752         int network_id = -1;
1753
1754         wpa_s->ap_configured_cb = NULL;
1755         wpa_s->ap_configured_cb_ctx = NULL;
1756         wpa_s->ap_configured_cb_data = NULL;
1757         if (!wpa_s->go_params) {
1758                 wpa_printf(MSG_ERROR,
1759                            "P2P: p2p_go_configured() called with wpa_s->go_params == NULL");
1760                 return;
1761         }
1762
1763         p2p_go_save_group_common_freqs(wpa_s, params);
1764         p2p_go_dump_common_freqs(wpa_s);
1765
1766         ssid = wpa_s->current_ssid;
1767         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1768                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1769                 if (wpa_s->global->p2p_group_formation == wpa_s)
1770                         wpa_s->global->p2p_group_formation = NULL;
1771                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1772                                        params->passphrase[0] == '\0' ?
1773                                        params->psk : NULL,
1774                                        params->passphrase,
1775                                        wpa_s->global->p2p_dev_addr,
1776                                        params->persistent_group, "");
1777                 wpa_s->group_formation_reported = 1;
1778
1779                 if (wpa_s->p2pdev->p2ps_method_config_any) {
1780                         if (is_zero_ether_addr(wpa_s->p2pdev->p2ps_join_addr)) {
1781                                 wpa_dbg(wpa_s, MSG_DEBUG,
1782                                         "P2PS: Setting default PIN for ANY");
1783                                 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1784                                                           "12345670", NULL, 0,
1785                                                           0);
1786                         } else {
1787                                 wpa_dbg(wpa_s, MSG_DEBUG,
1788                                         "P2PS: Setting default PIN for " MACSTR,
1789                                         MAC2STR(wpa_s->p2pdev->p2ps_join_addr));
1790                                 wpa_supplicant_ap_wps_pin(
1791                                         wpa_s, wpa_s->p2pdev->p2ps_join_addr,
1792                                         "12345670", NULL, 0, 0);
1793                         }
1794                         wpa_s->p2pdev->p2ps_method_config_any = 0;
1795                 }
1796
1797                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1798                 if (params->persistent_group) {
1799                         network_id = wpas_p2p_store_persistent_group(
1800                                 wpa_s->p2pdev, ssid,
1801                                 wpa_s->global->p2p_dev_addr);
1802                         wpas_p2p_add_psk_list(wpa_s, ssid);
1803                 }
1804                 if (network_id < 0)
1805                         network_id = ssid->id;
1806                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1807                 wpas_p2p_cross_connect_setup(wpa_s);
1808                 wpas_p2p_set_group_idle_timeout(wpa_s);
1809
1810                 if (wpa_s->p2p_first_connection_timeout) {
1811                         wpa_dbg(wpa_s, MSG_DEBUG,
1812                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1813                                 wpa_s->p2p_first_connection_timeout);
1814                         wpa_s->p2p_go_group_formation_completed = 0;
1815                         wpa_s->global->p2p_group_formation = wpa_s;
1816                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1817                                              wpa_s->p2pdev, NULL);
1818                         eloop_register_timeout(
1819                                 wpa_s->p2p_first_connection_timeout, 0,
1820                                 wpas_p2p_group_formation_timeout,
1821                                 wpa_s->p2pdev, NULL);
1822                 }
1823
1824                 return;
1825         }
1826
1827         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1828         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1829                                               params->peer_interface_addr)) {
1830                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1831                            "filtering");
1832                 return;
1833         }
1834         if (params->wps_method == WPS_PBC) {
1835                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1836                                           params->peer_device_addr);
1837 #ifdef CONFIG_WPS_NFC
1838         } else if (params->wps_method == WPS_NFC) {
1839                 if (wpa_s->p2pdev->p2p_oob_dev_pw_id !=
1840                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1841                     !wpa_s->p2pdev->p2p_oob_dev_pw) {
1842                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1843                         return;
1844                 }
1845                 wpas_ap_wps_add_nfc_pw(
1846                         wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id,
1847                         wpa_s->p2pdev->p2p_oob_dev_pw,
1848                         wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ?
1849                         wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL);
1850 #endif /* CONFIG_WPS_NFC */
1851         } else if (wpa_s->p2p_pin[0])
1852                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1853                                           wpa_s->p2p_pin, NULL, 0, 0);
1854         os_free(wpa_s->go_params);
1855         wpa_s->go_params = NULL;
1856 }
1857
1858
1859 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1860                               struct p2p_go_neg_results *params,
1861                               int group_formation)
1862 {
1863         struct wpa_ssid *ssid;
1864
1865         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1866         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1867                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1868                         "results");
1869                 return;
1870         }
1871
1872         ssid = wpa_config_add_network(wpa_s->conf);
1873         if (ssid == NULL) {
1874                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1875                 return;
1876         }
1877
1878         wpa_s->show_group_started = 0;
1879         wpa_s->p2p_go_group_formation_completed = 0;
1880         wpa_s->group_formation_reported = 0;
1881         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1882
1883         wpa_config_set_network_defaults(ssid);
1884         ssid->temporary = 1;
1885         ssid->p2p_group = 1;
1886         ssid->p2p_persistent_group = params->persistent_group;
1887         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1888                 WPAS_MODE_P2P_GO;
1889         ssid->frequency = params->freq;
1890         ssid->ht40 = params->ht40;
1891         ssid->vht = params->vht;
1892         ssid->max_oper_chwidth = params->max_oper_chwidth;
1893         ssid->vht_center_freq2 = params->vht_center_freq2;
1894         ssid->ssid = os_zalloc(params->ssid_len + 1);
1895         if (ssid->ssid) {
1896                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1897                 ssid->ssid_len = params->ssid_len;
1898         }
1899         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1900         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1901         ssid->proto = WPA_PROTO_RSN;
1902         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1903         ssid->group_cipher = WPA_CIPHER_CCMP;
1904         if (params->freq > 56160) {
1905                 /*
1906                  * Enable GCMP instead of CCMP as pairwise_cipher and
1907                  * group_cipher in 60 GHz.
1908                  */
1909                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1910                 ssid->group_cipher = WPA_CIPHER_GCMP;
1911                 /* P2P GO in 60 GHz is always a PCP (PBSS) */
1912                 ssid->pbss = 1;
1913         }
1914         if (os_strlen(params->passphrase) > 0) {
1915                 ssid->passphrase = os_strdup(params->passphrase);
1916                 if (ssid->passphrase == NULL) {
1917                         wpa_msg_global(wpa_s, MSG_ERROR,
1918                                        "P2P: Failed to copy passphrase for GO");
1919                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1920                         return;
1921                 }
1922         } else
1923                 ssid->passphrase = NULL;
1924         ssid->psk_set = params->psk_set;
1925         if (ssid->psk_set)
1926                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1927         else if (ssid->passphrase)
1928                 wpa_config_update_psk(ssid);
1929         ssid->ap_max_inactivity = wpa_s->p2pdev->conf->p2p_go_max_inactivity;
1930
1931         wpa_s->ap_configured_cb = p2p_go_configured;
1932         wpa_s->ap_configured_cb_ctx = wpa_s;
1933         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1934         wpa_s->scan_req = NORMAL_SCAN_REQ;
1935         wpa_s->connect_without_scan = ssid;
1936         wpa_s->reassociate = 1;
1937         wpa_s->disconnected = 0;
1938         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1939                 "start GO)");
1940         wpa_supplicant_req_scan(wpa_s, 0, 0);
1941 }
1942
1943
1944 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1945                                   const struct wpa_supplicant *src)
1946 {
1947         struct wpa_config *d;
1948         const struct wpa_config *s;
1949
1950         d = dst->conf;
1951         s = src->conf;
1952
1953 #define C(n) if (s->n) d->n = os_strdup(s->n)
1954         C(device_name);
1955         C(manufacturer);
1956         C(model_name);
1957         C(model_number);
1958         C(serial_number);
1959         C(config_methods);
1960 #undef C
1961
1962         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1963         os_memcpy(d->sec_device_type, s->sec_device_type,
1964                   sizeof(d->sec_device_type));
1965         d->num_sec_device_types = s->num_sec_device_types;
1966
1967         d->p2p_group_idle = s->p2p_group_idle;
1968         d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
1969         d->p2p_intra_bss = s->p2p_intra_bss;
1970         d->persistent_reconnect = s->persistent_reconnect;
1971         d->max_num_sta = s->max_num_sta;
1972         d->pbc_in_m1 = s->pbc_in_m1;
1973         d->ignore_old_scan_res = s->ignore_old_scan_res;
1974         d->beacon_int = s->beacon_int;
1975         d->dtim_period = s->dtim_period;
1976         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1977         d->disassoc_low_ack = s->disassoc_low_ack;
1978         d->disable_scan_offload = s->disable_scan_offload;
1979         d->passive_scan = s->passive_scan;
1980
1981         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1982                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1983                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1984         }
1985         d->p2p_cli_probe = s->p2p_cli_probe;
1986 }
1987
1988
1989 static void wpas_p2p_clone_config_dh(struct wpa_supplicant *dst,
1990                                      const struct wpa_supplicant *src)
1991 {
1992         struct wpa_config *d;
1993         const struct wpa_config *s;
1994
1995         d = dst->conf;
1996         s = src->conf;
1997
1998         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey &&
1999             !d->wps_nfc_dh_privkey && !d->wps_nfc_dh_pubkey) {
2000                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
2001                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
2002         }
2003 }
2004
2005
2006 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
2007                                       char *ifname, size_t len)
2008 {
2009         char *ifname_ptr = wpa_s->ifname;
2010
2011         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
2012                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
2013                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
2014         }
2015
2016         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
2017         if (os_strlen(ifname) >= IFNAMSIZ &&
2018             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
2019                 int res;
2020
2021                 /* Try to avoid going over the IFNAMSIZ length limit */
2022                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
2023                 if (os_snprintf_error(len, res) && len)
2024                         ifname[len - 1] = '\0';
2025         }
2026 }
2027
2028
2029 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
2030                                         enum wpa_driver_if_type type)
2031 {
2032         char ifname[120], force_ifname[120];
2033
2034         if (wpa_s->pending_interface_name[0]) {
2035                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
2036                            "- skip creation of a new one");
2037                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
2038                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
2039                                    "unknown?! ifname='%s'",
2040                                    wpa_s->pending_interface_name);
2041                         return -1;
2042                 }
2043                 return 0;
2044         }
2045
2046         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
2047         force_ifname[0] = '\0';
2048
2049         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
2050                    ifname);
2051         wpa_s->p2p_group_idx++;
2052
2053         wpa_s->pending_interface_type = type;
2054         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
2055                            wpa_s->pending_interface_addr, NULL) < 0) {
2056                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
2057                            "interface");
2058                 return -1;
2059         }
2060
2061         if (force_ifname[0]) {
2062                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2063                            force_ifname);
2064                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2065                            sizeof(wpa_s->pending_interface_name));
2066         } else
2067                 os_strlcpy(wpa_s->pending_interface_name, ifname,
2068                            sizeof(wpa_s->pending_interface_name));
2069         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2070                    MACSTR, wpa_s->pending_interface_name,
2071                    MAC2STR(wpa_s->pending_interface_addr));
2072
2073         return 0;
2074 }
2075
2076
2077 static void wpas_p2p_remove_pending_group_interface(
2078         struct wpa_supplicant *wpa_s)
2079 {
2080         if (!wpa_s->pending_interface_name[0] ||
2081             is_zero_ether_addr(wpa_s->pending_interface_addr))
2082                 return; /* No pending virtual interface */
2083
2084         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2085                    wpa_s->pending_interface_name);
2086         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2087                           wpa_s->pending_interface_name);
2088         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2089         wpa_s->pending_interface_name[0] = '\0';
2090         wpa_s->global->pending_group_iface_for_p2ps = 0;
2091 }
2092
2093
2094 static struct wpa_supplicant *
2095 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2096 {
2097         struct wpa_interface iface;
2098         struct wpa_supplicant *group_wpa_s;
2099
2100         if (!wpa_s->pending_interface_name[0]) {
2101                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2102                 if (!wpas_p2p_create_iface(wpa_s))
2103                         return NULL;
2104                 /*
2105                  * Something has forced us to remove the pending interface; try
2106                  * to create a new one and hope for the best that we will get
2107                  * the same local address.
2108                  */
2109                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2110                                                  WPA_IF_P2P_CLIENT) < 0)
2111                         return NULL;
2112         }
2113
2114         os_memset(&iface, 0, sizeof(iface));
2115         iface.ifname = wpa_s->pending_interface_name;
2116         iface.driver = wpa_s->driver->name;
2117         if (wpa_s->conf->ctrl_interface == NULL &&
2118             wpa_s->parent != wpa_s &&
2119             wpa_s->p2p_mgmt &&
2120             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2121                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2122         else
2123                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2124         iface.driver_param = wpa_s->conf->driver_param;
2125         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2126         if (group_wpa_s == NULL) {
2127                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2128                            "wpa_supplicant interface");
2129                 return NULL;
2130         }
2131         wpa_s->pending_interface_name[0] = '\0';
2132         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2133                 P2P_GROUP_INTERFACE_CLIENT;
2134         wpa_s->global->p2p_group_formation = group_wpa_s;
2135         wpa_s->global->pending_group_iface_for_p2ps = 0;
2136
2137         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2138
2139         return group_wpa_s;
2140 }
2141
2142
2143 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2144                                              void *timeout_ctx)
2145 {
2146         struct wpa_supplicant *wpa_s = eloop_ctx;
2147         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2148         wpas_p2p_group_formation_failed(wpa_s, 0);
2149 }
2150
2151
2152 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2153                                             int already_deleted)
2154 {
2155         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2156                              wpa_s->p2pdev, NULL);
2157         if (wpa_s->global->p2p)
2158                 p2p_group_formation_failed(wpa_s->global->p2p);
2159         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2160 }
2161
2162
2163 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2164 {
2165         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2166         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2167                              wpa_s->p2pdev, NULL);
2168         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2169                                wpa_s->p2pdev, NULL);
2170         wpa_s->global->p2p_fail_on_wps_complete = 0;
2171 }
2172
2173
2174 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2175 {
2176         if (wpa_s->global->p2p_group_formation != wpa_s)
2177                 return;
2178         /* Speed up group formation timeout since this cannot succeed */
2179         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2180                              wpa_s->p2pdev, NULL);
2181         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2182                                wpa_s->p2pdev, NULL);
2183 }
2184
2185
2186 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2187 {
2188         struct wpa_supplicant *wpa_s = ctx;
2189         struct wpa_supplicant *group_wpa_s;
2190
2191         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2192                 wpa_drv_cancel_remain_on_channel(wpa_s);
2193                 wpa_s->off_channel_freq = 0;
2194                 wpa_s->roc_waiting_drv_freq = 0;
2195         }
2196
2197         if (res->status) {
2198                 wpa_msg_global(wpa_s, MSG_INFO,
2199                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2200                                res->status);
2201                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2202                 wpas_p2p_remove_pending_group_interface(wpa_s);
2203                 return;
2204         }
2205
2206         if (!res->role_go) {
2207                 /* Inform driver of the operating channel of GO. */
2208                 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2209         }
2210
2211         if (wpa_s->p2p_go_ht40)
2212                 res->ht40 = 1;
2213         if (wpa_s->p2p_go_vht)
2214                 res->vht = 1;
2215         res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth;
2216         res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2;
2217
2218         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2219                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2220                        " wps_method=%s",
2221                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2222                        MAC2STR(res->peer_device_addr),
2223                        MAC2STR(res->peer_interface_addr),
2224                        p2p_wps_method_text(res->wps_method));
2225         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2226
2227         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2228                 struct wpa_ssid *ssid;
2229                 ssid = wpa_config_get_network(wpa_s->conf,
2230                                               wpa_s->p2p_persistent_id);
2231                 if (ssid && ssid->disabled == 2 &&
2232                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2233                         size_t len = os_strlen(ssid->passphrase);
2234                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2235                                    "on requested persistent group");
2236                         os_memcpy(res->passphrase, ssid->passphrase, len);
2237                         res->passphrase[len] = '\0';
2238                 }
2239         }
2240
2241         if (wpa_s->create_p2p_iface) {
2242                 group_wpa_s =
2243                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2244                 if (group_wpa_s == NULL) {
2245                         wpas_p2p_remove_pending_group_interface(wpa_s);
2246                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2247                                              wpa_s, NULL);
2248                         wpas_p2p_group_formation_failed(wpa_s, 1);
2249                         return;
2250                 }
2251                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2252                 wpa_s->pending_interface_name[0] = '\0';
2253         } else {
2254                 group_wpa_s = wpa_s->parent;
2255                 wpa_s->global->p2p_group_formation = group_wpa_s;
2256                 if (group_wpa_s != wpa_s)
2257                         wpas_p2p_clone_config_dh(group_wpa_s, wpa_s);
2258         }
2259
2260         group_wpa_s->p2p_in_provisioning = 1;
2261         group_wpa_s->p2pdev = wpa_s;
2262         if (group_wpa_s != wpa_s) {
2263                 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2264                           sizeof(group_wpa_s->p2p_pin));
2265                 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2266         }
2267         if (res->role_go) {
2268                 wpas_start_wps_go(group_wpa_s, res, 1);
2269         } else {
2270                 os_get_reltime(&group_wpa_s->scan_min_time);
2271                 wpas_start_wps_enrollee(group_wpa_s, res);
2272         }
2273
2274         wpa_s->p2p_long_listen = 0;
2275         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2276
2277         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2278         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2279                                (res->peer_config_timeout % 100) * 10000,
2280                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2281 }
2282
2283
2284 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2285                                u8 go_intent)
2286 {
2287         struct wpa_supplicant *wpa_s = ctx;
2288         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2289                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2290                        dev_passwd_id, go_intent);
2291
2292         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2293 }
2294
2295
2296 static void wpas_dev_found(void *ctx, const u8 *addr,
2297                            const struct p2p_peer_info *info,
2298                            int new_device)
2299 {
2300 #ifndef CONFIG_NO_STDOUT_DEBUG
2301         struct wpa_supplicant *wpa_s = ctx;
2302         char devtype[WPS_DEV_TYPE_BUFSIZE];
2303         char *wfd_dev_info_hex = NULL;
2304
2305 #ifdef CONFIG_WIFI_DISPLAY
2306         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2307                                                     WFD_SUBELEM_DEVICE_INFO);
2308 #endif /* CONFIG_WIFI_DISPLAY */
2309
2310         if (info->p2ps_instance) {
2311                 char str[256];
2312                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2313                 size_t len = wpabuf_len(info->p2ps_instance);
2314
2315                 while (len) {
2316                         u32 id;
2317                         u16 methods;
2318                         u8 str_len;
2319
2320                         if (len < 4 + 2 + 1)
2321                                 break;
2322                         id = WPA_GET_LE32(buf);
2323                         buf += sizeof(u32);
2324                         methods = WPA_GET_BE16(buf);
2325                         buf += sizeof(u16);
2326                         str_len = *buf++;
2327                         if (str_len > len - 4 - 2 - 1)
2328                                 break;
2329                         os_memcpy(str, buf, str_len);
2330                         str[str_len] = '\0';
2331                         buf += str_len;
2332                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2333
2334                         wpa_msg_global(wpa_s, MSG_INFO,
2335                                        P2P_EVENT_DEVICE_FOUND MACSTR
2336                                        " p2p_dev_addr=" MACSTR
2337                                        " pri_dev_type=%s name='%s'"
2338                                        " config_methods=0x%x"
2339                                        " dev_capab=0x%x"
2340                                        " group_capab=0x%x"
2341                                        " adv_id=%x asp_svc=%s%s",
2342                                        MAC2STR(addr),
2343                                        MAC2STR(info->p2p_device_addr),
2344                                        wps_dev_type_bin2str(
2345                                                info->pri_dev_type,
2346                                                devtype, sizeof(devtype)),
2347                                        info->device_name, methods,
2348                                        info->dev_capab, info->group_capab,
2349                                        id, str,
2350                                        info->vendor_elems ?
2351                                        " vendor_elems=1" : "");
2352                 }
2353                 goto done;
2354         }
2355
2356         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2357                        " p2p_dev_addr=" MACSTR
2358                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2359                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2360                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2361                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2362                                             sizeof(devtype)),
2363                        info->device_name, info->config_methods,
2364                        info->dev_capab, info->group_capab,
2365                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2366                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2367                        info->vendor_elems ? " vendor_elems=1" : "",
2368                        new_device);
2369
2370 done:
2371         os_free(wfd_dev_info_hex);
2372 #endif /* CONFIG_NO_STDOUT_DEBUG */
2373
2374         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2375 }
2376
2377
2378 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2379 {
2380         struct wpa_supplicant *wpa_s = ctx;
2381
2382         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2383                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2384
2385         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2386 }
2387
2388
2389 static void wpas_find_stopped(void *ctx)
2390 {
2391         struct wpa_supplicant *wpa_s = ctx;
2392         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2393         wpas_notify_p2p_find_stopped(wpa_s);
2394 }
2395
2396
2397 struct wpas_p2p_listen_work {
2398         unsigned int freq;
2399         unsigned int duration;
2400         struct wpabuf *probe_resp_ie;
2401 };
2402
2403
2404 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2405 {
2406         if (lwork == NULL)
2407                 return;
2408         wpabuf_free(lwork->probe_resp_ie);
2409         os_free(lwork);
2410 }
2411
2412
2413 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2414 {
2415         struct wpas_p2p_listen_work *lwork;
2416
2417         if (!wpa_s->p2p_listen_work)
2418                 return;
2419
2420         lwork = wpa_s->p2p_listen_work->ctx;
2421         wpas_p2p_listen_work_free(lwork);
2422         radio_work_done(wpa_s->p2p_listen_work);
2423         wpa_s->p2p_listen_work = NULL;
2424 }
2425
2426
2427 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2428 {
2429         struct wpa_supplicant *wpa_s = work->wpa_s;
2430         struct wpas_p2p_listen_work *lwork = work->ctx;
2431         unsigned int duration;
2432
2433         if (deinit) {
2434                 if (work->started) {
2435                         wpa_s->p2p_listen_work = NULL;
2436                         wpas_stop_listen(wpa_s);
2437                 }
2438                 wpas_p2p_listen_work_free(lwork);
2439                 return;
2440         }
2441
2442         wpa_s->p2p_listen_work = work;
2443
2444         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2445
2446         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2447                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2448                            "report received Probe Request frames");
2449                 wpas_p2p_listen_work_done(wpa_s);
2450                 return;
2451         }
2452
2453         wpa_s->pending_listen_freq = lwork->freq;
2454         wpa_s->pending_listen_duration = lwork->duration;
2455
2456         duration = lwork->duration;
2457 #ifdef CONFIG_TESTING_OPTIONS
2458         if (wpa_s->extra_roc_dur) {
2459                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2460                            duration, duration + wpa_s->extra_roc_dur);
2461                 duration += wpa_s->extra_roc_dur;
2462         }
2463 #endif /* CONFIG_TESTING_OPTIONS */
2464
2465         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2466                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2467                            "to remain on channel (%u MHz) for Listen "
2468                            "state", lwork->freq);
2469                 wpas_p2p_listen_work_done(wpa_s);
2470                 wpa_s->pending_listen_freq = 0;
2471                 return;
2472         }
2473         wpa_s->off_channel_freq = 0;
2474         wpa_s->roc_waiting_drv_freq = lwork->freq;
2475 }
2476
2477
2478 static int wpas_start_listen(void *ctx, unsigned int freq,
2479                              unsigned int duration,
2480                              const struct wpabuf *probe_resp_ie)
2481 {
2482         struct wpa_supplicant *wpa_s = ctx;
2483         struct wpas_p2p_listen_work *lwork;
2484
2485         if (wpa_s->p2p_listen_work) {
2486                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2487                 return -1;
2488         }
2489
2490         lwork = os_zalloc(sizeof(*lwork));
2491         if (lwork == NULL)
2492                 return -1;
2493         lwork->freq = freq;
2494         lwork->duration = duration;
2495         if (probe_resp_ie) {
2496                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2497                 if (lwork->probe_resp_ie == NULL) {
2498                         wpas_p2p_listen_work_free(lwork);
2499                         return -1;
2500                 }
2501         }
2502
2503         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2504                            lwork) < 0) {
2505                 wpas_p2p_listen_work_free(lwork);
2506                 return -1;
2507         }
2508
2509         return 0;
2510 }
2511
2512
2513 static void wpas_stop_listen(void *ctx)
2514 {
2515         struct wpa_supplicant *wpa_s = ctx;
2516         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2517                 wpa_drv_cancel_remain_on_channel(wpa_s);
2518                 wpa_s->off_channel_freq = 0;
2519                 wpa_s->roc_waiting_drv_freq = 0;
2520         }
2521         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2522
2523         /*
2524          * Don't cancel Probe Request RX reporting for a connected P2P Client
2525          * handling Probe Request frames.
2526          */
2527         if (!wpa_s->p2p_cli_probe)
2528                 wpa_drv_probe_req_report(wpa_s, 0);
2529
2530         wpas_p2p_listen_work_done(wpa_s);
2531 }
2532
2533
2534 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2535                                 unsigned int freq)
2536 {
2537         struct wpa_supplicant *wpa_s = ctx;
2538         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2539                                  freq);
2540 }
2541
2542
2543 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2544                                          const u8 *peer, const char *params,
2545                                          unsigned int generated_pin)
2546 {
2547         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2548                        " %08d%s", MAC2STR(peer), generated_pin, params);
2549 }
2550
2551
2552 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2553                                         const u8 *peer, const char *params)
2554 {
2555         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2556                        "%s", MAC2STR(peer), params);
2557 }
2558
2559
2560 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2561                                const u8 *dev_addr, const u8 *pri_dev_type,
2562                                const char *dev_name, u16 supp_config_methods,
2563                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2564                                size_t group_id_len)
2565 {
2566         struct wpa_supplicant *wpa_s = ctx;
2567         char devtype[WPS_DEV_TYPE_BUFSIZE];
2568         char params[300];
2569         u8 empty_dev_type[8];
2570         unsigned int generated_pin = 0;
2571         struct wpa_supplicant *group = NULL;
2572         int res;
2573
2574         if (group_id) {
2575                 for (group = wpa_s->global->ifaces; group; group = group->next)
2576                 {
2577                         struct wpa_ssid *s = group->current_ssid;
2578                         if (s != NULL &&
2579                             s->mode == WPAS_MODE_P2P_GO &&
2580                             group_id_len - ETH_ALEN == s->ssid_len &&
2581                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2582                                       s->ssid_len) == 0)
2583                                 break;
2584                 }
2585         }
2586
2587         if (pri_dev_type == NULL) {
2588                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2589                 pri_dev_type = empty_dev_type;
2590         }
2591         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2592                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2593                           "dev_capab=0x%x group_capab=0x%x%s%s",
2594                           MAC2STR(dev_addr),
2595                           wps_dev_type_bin2str(pri_dev_type, devtype,
2596                                                sizeof(devtype)),
2597                           dev_name, supp_config_methods, dev_capab, group_capab,
2598                           group ? " group=" : "",
2599                           group ? group->ifname : "");
2600         if (os_snprintf_error(sizeof(params), res))
2601                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2602         params[sizeof(params) - 1] = '\0';
2603
2604         if (config_methods & WPS_CONFIG_DISPLAY) {
2605                 if (wps_generate_pin(&generated_pin) < 0) {
2606                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2607                         wpas_notify_p2p_provision_discovery(
2608                                 wpa_s, peer, 0 /* response */,
2609                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2610                         return;
2611                 }
2612                 wpas_prov_disc_local_display(wpa_s, peer, params,
2613                                              generated_pin);
2614         } else if (config_methods & WPS_CONFIG_KEYPAD)
2615                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2616         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2617                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2618                                MACSTR "%s", MAC2STR(peer), params);
2619
2620         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2621                                             P2P_PROV_DISC_SUCCESS,
2622                                             config_methods, generated_pin);
2623 }
2624
2625
2626 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2627 {
2628         struct wpa_supplicant *wpa_s = ctx;
2629         unsigned int generated_pin = 0;
2630         char params[20];
2631
2632         if (wpa_s->pending_pd_before_join &&
2633             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2634              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2635                 wpa_s->pending_pd_before_join = 0;
2636                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2637                            "join-existing-group operation");
2638                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2639                 return;
2640         }
2641
2642         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2643             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2644                 int res;
2645
2646                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2647                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2648                 if (os_snprintf_error(sizeof(params), res))
2649                         params[sizeof(params) - 1] = '\0';
2650         } else
2651                 params[0] = '\0';
2652
2653         if (config_methods & WPS_CONFIG_DISPLAY)
2654                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2655         else if (config_methods & WPS_CONFIG_KEYPAD) {
2656                 if (wps_generate_pin(&generated_pin) < 0) {
2657                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2658                         wpas_notify_p2p_provision_discovery(
2659                                 wpa_s, peer, 0 /* response */,
2660                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2661                         return;
2662                 }
2663                 wpas_prov_disc_local_display(wpa_s, peer, params,
2664                                              generated_pin);
2665         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2666                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2667                                MACSTR "%s", MAC2STR(peer), params);
2668
2669         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2670                                             P2P_PROV_DISC_SUCCESS,
2671                                             config_methods, generated_pin);
2672 }
2673
2674
2675 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2676                                 enum p2p_prov_disc_status status,
2677                                 u32 adv_id, const u8 *adv_mac,
2678                                 const char *deferred_session_resp)
2679 {
2680         struct wpa_supplicant *wpa_s = ctx;
2681
2682         if (wpa_s->p2p_fallback_to_go_neg) {
2683                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2684                         "failed - fall back to GO Negotiation");
2685                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
2686                                P2P_EVENT_FALLBACK_TO_GO_NEG
2687                                "reason=PD-failed");
2688                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2689                 return;
2690         }
2691
2692         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2693                 wpa_s->pending_pd_before_join = 0;
2694                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2695                            "join-existing-group operation (no ACK for PD "
2696                            "Req attempts)");
2697                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2698                 return;
2699         }
2700
2701         if (adv_id && adv_mac && deferred_session_resp) {
2702                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2703                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2704                                " deferred_session_resp='%s'",
2705                                MAC2STR(peer), status, adv_id,
2706                                deferred_session_resp);
2707         } else if (adv_id && adv_mac) {
2708                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2709                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2710                                MAC2STR(peer), status, adv_id);
2711         } else {
2712                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2713                                " p2p_dev_addr=" MACSTR " status=%d",
2714                                MAC2STR(peer), status);
2715         }
2716
2717         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2718                                             status, 0, 0);
2719 }
2720
2721
2722 static int freq_included(struct wpa_supplicant *wpa_s,
2723                          const struct p2p_channels *channels,
2724                          unsigned int freq)
2725 {
2726         if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2727             wpas_p2p_go_is_peer_freq(wpa_s, freq))
2728                 return 1;
2729         return 0;
2730 }
2731
2732
2733 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2734 {
2735         unsigned int num = P2P_MAX_CHANNELS;
2736         int *common_freqs;
2737         int ret;
2738
2739         p2p_go_dump_common_freqs(wpa_s);
2740         common_freqs = os_calloc(num, sizeof(int));
2741         if (!common_freqs)
2742                 return;
2743
2744         ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2745         if (ret < 0) {
2746                 wpa_dbg(wpa_s, MSG_DEBUG,
2747                         "P2P: Failed to get group common freqs");
2748                 os_free(common_freqs);
2749                 return;
2750         }
2751
2752         os_free(wpa_s->p2p_group_common_freqs);
2753         wpa_s->p2p_group_common_freqs = common_freqs;
2754         wpa_s->p2p_group_common_freqs_num = num;
2755         p2p_go_dump_common_freqs(wpa_s);
2756 }
2757
2758
2759 /*
2760  * Check if the given frequency is one of the possible operating frequencies
2761  * set after the completion of the GO Negotiation.
2762  */
2763 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2764 {
2765         unsigned int i;
2766
2767         p2p_go_dump_common_freqs(wpa_s);
2768
2769         /* assume no restrictions */
2770         if (!wpa_s->p2p_group_common_freqs_num)
2771                 return 1;
2772
2773         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2774                 if (wpa_s->p2p_group_common_freqs[i] == freq)
2775                         return 1;
2776         }
2777         return 0;
2778 }
2779
2780
2781 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2782                                struct sta_info *sta, void *ctx)
2783 {
2784         int *ecsa_support = ctx;
2785
2786         *ecsa_support &= sta->ecsa_supported;
2787
2788         return 0;
2789 }
2790
2791
2792 /* Check if all the peers support eCSA */
2793 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2794 {
2795         int ecsa_support = 1;
2796
2797         ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2798                         &ecsa_support);
2799
2800         return ecsa_support;
2801 }
2802
2803
2804 /**
2805  * Pick the best frequency to use from all the currently used frequencies.
2806  */
2807 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2808                                         struct wpa_used_freq_data *freqs,
2809                                         unsigned int num)
2810 {
2811         unsigned int i, c;
2812
2813         /* find a candidate freq that is supported by P2P */
2814         for (c = 0; c < num; c++)
2815                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2816                         break;
2817
2818         if (c == num)
2819                 return 0;
2820
2821         /* once we have a candidate, try to find a 'better' one */
2822         for (i = c + 1; i < num; i++) {
2823                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2824                         continue;
2825
2826                 /*
2827                  * 1. Infrastructure station interfaces have higher preference.
2828                  * 2. P2P Clients have higher preference.
2829                  * 3. All others.
2830                  */
2831                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2832                         c = i;
2833                         break;
2834                 }
2835
2836                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2837                         c = i;
2838         }
2839         return freqs[c].freq;
2840 }
2841
2842
2843 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2844                                   const u8 *go_dev_addr, const u8 *ssid,
2845                                   size_t ssid_len, int *go, u8 *group_bssid,
2846                                   int *force_freq, int persistent_group,
2847                                   const struct p2p_channels *channels,
2848                                   int dev_pw_id)
2849 {
2850         struct wpa_supplicant *wpa_s = ctx;
2851         struct wpa_ssid *s;
2852         struct wpa_used_freq_data *freqs;
2853         struct wpa_supplicant *grp;
2854         int best_freq;
2855
2856         if (!persistent_group) {
2857                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2858                            " to join an active group (SSID: %s)",
2859                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2860                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2861                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2862                      == 0 ||
2863                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2864                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2865                                    "authorized invitation");
2866                         goto accept_inv;
2867                 }
2868
2869 #ifdef CONFIG_WPS_NFC
2870                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2871                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2872                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2873                         wpa_s->p2p_wps_method = WPS_NFC;
2874                         wpa_s->pending_join_wps_method = WPS_NFC;
2875                         os_memcpy(wpa_s->pending_join_dev_addr,
2876                                   go_dev_addr, ETH_ALEN);
2877                         os_memcpy(wpa_s->pending_join_iface_addr,
2878                                   bssid, ETH_ALEN);
2879                         goto accept_inv;
2880                 }
2881 #endif /* CONFIG_WPS_NFC */
2882
2883                 /*
2884                  * Do not accept the invitation automatically; notify user and
2885                  * request approval.
2886                  */
2887                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2888         }
2889
2890         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2891         if (grp) {
2892                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2893                            "running persistent group");
2894                 if (*go)
2895                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2896                 goto accept_inv;
2897         }
2898
2899         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2900             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2901                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2902                            "invitation to re-invoke a persistent group");
2903                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2904         } else if (!wpa_s->conf->persistent_reconnect)
2905                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2906
2907         for (s = wpa_s->conf->ssid; s; s = s->next) {
2908                 if (s->disabled == 2 &&
2909                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2910                     s->ssid_len == ssid_len &&
2911                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2912                         break;
2913         }
2914
2915         if (!s) {
2916                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2917                            " requested reinvocation of an unknown group",
2918                            MAC2STR(sa));
2919                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2920         }
2921
2922         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2923                 *go = 1;
2924                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2925                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2926                                    "interface is already in use - reject "
2927                                    "invitation");
2928                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2929                 }
2930                 if (wpa_s->p2p_mgmt)
2931                         os_memcpy(group_bssid, wpa_s->parent->own_addr,
2932                                   ETH_ALEN);
2933                 else
2934                         os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2935         } else if (s->mode == WPAS_MODE_P2P_GO) {
2936                 *go = 1;
2937                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2938                 {
2939                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2940                                    "interface address for the group");
2941                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2942                 }
2943                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2944                           ETH_ALEN);
2945         }
2946
2947 accept_inv:
2948         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2949
2950         best_freq = 0;
2951         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2952                           sizeof(struct wpa_used_freq_data));
2953         if (freqs) {
2954                 int num_channels = wpa_s->num_multichan_concurrent;
2955                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2956                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2957                 os_free(freqs);
2958         }
2959
2960         /* Get one of the frequencies currently in use */
2961         if (best_freq > 0) {
2962                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2963                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2964
2965                 if (wpa_s->num_multichan_concurrent < 2 ||
2966                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2967                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2968                         *force_freq = best_freq;
2969                 }
2970         }
2971
2972         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2973             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2974                 if (*go == 0) {
2975                         /* We are the client */
2976                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2977                                    "running a GO but we are capable of MCC, "
2978                                    "figure out the best channel to use");
2979                         *force_freq = 0;
2980                 } else if (!freq_included(wpa_s, channels, *force_freq)) {
2981                         /* We are the GO, and *force_freq is not in the
2982                          * intersection */
2983                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2984                                    "in intersection but we are capable of MCC, "
2985                                    "figure out the best channel to use",
2986                                    *force_freq);
2987                         *force_freq = 0;
2988                 }
2989         }
2990
2991         return P2P_SC_SUCCESS;
2992 }
2993
2994
2995 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2996                                      const u8 *ssid, size_t ssid_len,
2997                                      const u8 *go_dev_addr, u8 status,
2998                                      int op_freq)
2999 {
3000         struct wpa_supplicant *wpa_s = ctx;
3001         struct wpa_ssid *s;
3002
3003         for (s = wpa_s->conf->ssid; s; s = s->next) {
3004                 if (s->disabled == 2 &&
3005                     s->ssid_len == ssid_len &&
3006                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3007                         break;
3008         }
3009
3010         if (status == P2P_SC_SUCCESS) {
3011                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3012                            " was accepted; op_freq=%d MHz, SSID=%s",
3013                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3014                 if (s) {
3015                         int go = s->mode == WPAS_MODE_P2P_GO;
3016                         wpas_p2p_group_add_persistent(
3017                                 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL,
3018                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
3019                                 1);
3020                 } else if (bssid) {
3021                         wpa_s->user_initiated_pd = 0;
3022                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3023                                       wpa_s->p2p_wps_method, 0, op_freq,
3024                                       ssid, ssid_len);
3025                 }
3026                 return;
3027         }
3028
3029         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3030                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3031                            " was rejected (status %u)", MAC2STR(sa), status);
3032                 return;
3033         }
3034
3035         if (!s) {
3036                 if (bssid) {
3037                         wpa_msg_global(wpa_s, MSG_INFO,
3038                                        P2P_EVENT_INVITATION_RECEIVED
3039                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3040                                        " bssid=" MACSTR " unknown-network",
3041                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3042                                        MAC2STR(bssid));
3043                 } else {
3044                         wpa_msg_global(wpa_s, MSG_INFO,
3045                                        P2P_EVENT_INVITATION_RECEIVED
3046                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3047                                        " unknown-network",
3048                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3049                 }
3050                 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3051                                                     bssid, 0, op_freq);
3052                 return;
3053         }
3054
3055         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3056                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3057                                "sa=" MACSTR " persistent=%d freq=%d",
3058                                MAC2STR(sa), s->id, op_freq);
3059         } else {
3060                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3061                                "sa=" MACSTR " persistent=%d",
3062                                MAC2STR(sa), s->id);
3063         }
3064         wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3065                                             s->id, op_freq);
3066 }
3067
3068
3069 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3070                                         struct wpa_ssid *ssid,
3071                                         const u8 *peer, int inv)
3072 {
3073         size_t i;
3074         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3075
3076         if (ssid == NULL)
3077                 return;
3078
3079         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3080                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3081                               ETH_ALEN) == 0)
3082                         break;
3083         }
3084         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3085                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3086                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3087                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3088                                    "due to invitation result", ssid->id);
3089                         wpas_notify_network_removed(wpa_s, ssid);
3090                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3091                         return;
3092                 }
3093                 return; /* Peer not found in client list */
3094         }
3095
3096         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3097                    "group %d client list%s",
3098                    MAC2STR(peer), ssid->id,
3099                    inv ? " due to invitation result" : "");
3100         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3101                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3102                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3103         ssid->num_p2p_clients--;
3104         if (p2p_wpa_s->conf->update_config &&
3105             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3106                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3107 }
3108
3109
3110 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3111                                           const u8 *peer)
3112 {
3113         struct wpa_ssid *ssid;
3114
3115         wpa_s = wpa_s->global->p2p_invite_group;
3116         if (wpa_s == NULL)
3117                 return; /* No known invitation group */
3118         ssid = wpa_s->current_ssid;
3119         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3120             !ssid->p2p_persistent_group)
3121                 return; /* Not operating as a GO in persistent group */
3122         ssid = wpas_p2p_get_persistent(wpa_s->p2pdev, peer,
3123                                        ssid->ssid, ssid->ssid_len);
3124         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3125 }
3126
3127
3128 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3129                                    const struct p2p_channels *channels,
3130                                    const u8 *peer, int neg_freq,
3131                                    int peer_oper_freq)
3132 {
3133         struct wpa_supplicant *wpa_s = ctx;
3134         struct wpa_ssid *ssid;
3135         int freq;
3136
3137         if (bssid) {
3138                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3139                                "status=%d " MACSTR,
3140                                status, MAC2STR(bssid));
3141         } else {
3142                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3143                                "status=%d ", status);
3144         }
3145         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3146
3147         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3148                    status, MAC2STR(peer));
3149         if (wpa_s->pending_invite_ssid_id == -1) {
3150                 struct wpa_supplicant *group_if =
3151                         wpa_s->global->p2p_invite_group;
3152
3153                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3154                         wpas_remove_persistent_client(wpa_s, peer);
3155
3156                 /*
3157                  * Invitation to an active group. If this is successful and we
3158                  * are the GO, set the client wait to postpone some concurrent
3159                  * operations and to allow provisioning and connection to happen
3160                  * more quickly.
3161                  */
3162                 if (status == P2P_SC_SUCCESS &&
3163                     group_if && group_if->current_ssid &&
3164                     group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3165                         os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3166 #ifdef CONFIG_TESTING_OPTIONS
3167                         if (group_if->p2p_go_csa_on_inv) {
3168                                 wpa_printf(MSG_DEBUG,
3169                                            "Testing: force P2P GO CSA after invitation");
3170                                 eloop_cancel_timeout(
3171                                         wpas_p2p_reconsider_moving_go,
3172                                         wpa_s, NULL);
3173                                 eloop_register_timeout(
3174                                         0, 50000,
3175                                         wpas_p2p_reconsider_moving_go,
3176                                         wpa_s, NULL);
3177                         }
3178 #endif /* CONFIG_TESTING_OPTIONS */
3179                 }
3180                 return;
3181         }
3182
3183         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3184                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3185                            "invitation exchange to indicate readiness for "
3186                            "re-invocation");
3187         }
3188
3189         if (status != P2P_SC_SUCCESS) {
3190                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3191                         ssid = wpa_config_get_network(
3192                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3193                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3194                 }
3195                 wpas_p2p_remove_pending_group_interface(wpa_s);
3196                 return;
3197         }
3198
3199         ssid = wpa_config_get_network(wpa_s->conf,
3200                                       wpa_s->pending_invite_ssid_id);
3201         if (ssid == NULL) {
3202                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3203                            "data matching with invitation");
3204                 return;
3205         }
3206
3207         /*
3208          * The peer could have missed our ctrl::ack frame for Invitation
3209          * Response and continue retransmitting the frame. To reduce the
3210          * likelihood of the peer not getting successful TX status for the
3211          * Invitation Response frame, wait a short time here before starting
3212          * the persistent group so that we will remain on the current channel to
3213          * acknowledge any possible retransmission from the peer.
3214          */
3215         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3216                 "starting persistent group");
3217         os_sleep(0, 50000);
3218
3219         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3220             freq_included(wpa_s, channels, neg_freq))
3221                 freq = neg_freq;
3222         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3223                  freq_included(wpa_s, channels, peer_oper_freq))
3224                 freq = peer_oper_freq;
3225         else
3226                 freq = 0;
3227
3228         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3229                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3230         wpas_p2p_group_add_persistent(wpa_s, ssid,
3231                                       ssid->mode == WPAS_MODE_P2P_GO,
3232                                       wpa_s->p2p_persistent_go_freq,
3233                                       freq,
3234                                       wpa_s->p2p_go_vht_center_freq2,
3235                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3236                                       wpa_s->p2p_go_max_oper_chwidth,
3237                                       channels,
3238                                       ssid->mode == WPAS_MODE_P2P_GO ?
3239                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3240                                       0, 1);
3241 }
3242
3243
3244 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3245                                     unsigned int freq)
3246 {
3247         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3248                 return 1;
3249         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3250 }
3251
3252
3253 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3254 {
3255         reg->channel[reg->channels] = chan;
3256         reg->channels++;
3257 }
3258
3259
3260 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3261                                      struct p2p_channels *chan,
3262                                      struct p2p_channels *cli_chan)
3263 {
3264         int i, cla = 0;
3265
3266         wpa_s->global->p2p_24ghz_social_channels = 1;
3267
3268         os_memset(cli_chan, 0, sizeof(*cli_chan));
3269
3270         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3271                    "band");
3272
3273         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3274         chan->reg_class[cla].reg_class = 81;
3275         chan->reg_class[cla].channels = 0;
3276         for (i = 0; i < 11; i++) {
3277                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3278                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3279         }
3280         if (chan->reg_class[cla].channels)
3281                 cla++;
3282
3283         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3284                    "band");
3285
3286         /* Operating class 115 - 5 GHz, channels 36-48 */
3287         chan->reg_class[cla].reg_class = 115;
3288         chan->reg_class[cla].channels = 0;
3289         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3290                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3291         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3292                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3293         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3294                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3295         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3296                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3297         if (chan->reg_class[cla].channels)
3298                 cla++;
3299
3300         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3301                    "band");
3302
3303         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3304         chan->reg_class[cla].reg_class = 124;
3305         chan->reg_class[cla].channels = 0;
3306         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3307                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3308         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3309                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3310         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3311                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3312         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3313                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3314         if (chan->reg_class[cla].channels)
3315                 cla++;
3316
3317         chan->reg_classes = cla;
3318         return 0;
3319 }
3320
3321
3322 enum chan_allowed {
3323         NOT_ALLOWED, NO_IR, ALLOWED
3324 };
3325
3326 static int has_channel(struct wpa_global *global,
3327                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3328 {
3329         int i;
3330         unsigned int freq;
3331
3332         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3333                 chan * 5;
3334         if (wpas_p2p_disallowed_freq(global, freq))
3335                 return NOT_ALLOWED;
3336
3337         for (i = 0; i < mode->num_channels; i++) {
3338                 if (mode->channels[i].chan == chan) {
3339                         if (flags)
3340                                 *flags = mode->channels[i].flag;
3341                         if (mode->channels[i].flag &
3342                             (HOSTAPD_CHAN_DISABLED |
3343                              HOSTAPD_CHAN_RADAR))
3344                                 return NOT_ALLOWED;
3345                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3346                                 return NO_IR;
3347                         return ALLOWED;
3348                 }
3349         }
3350
3351         return NOT_ALLOWED;
3352 }
3353
3354
3355 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3356                                      struct hostapd_hw_modes *mode,
3357                                      u8 channel)
3358 {
3359         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3360         unsigned int i;
3361
3362         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3363                 return 0;
3364
3365         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3366                 /*
3367                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3368                  * so the center channel is 6 channels away from the start/end.
3369                  */
3370                 if (channel >= center_channels[i] - 6 &&
3371                     channel <= center_channels[i] + 6)
3372                         return center_channels[i];
3373
3374         return 0;
3375 }
3376
3377
3378 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3379                                                struct hostapd_hw_modes *mode,
3380                                                u8 channel, u8 bw)
3381 {
3382         u8 center_chan;
3383         int i, flags;
3384         enum chan_allowed res, ret = ALLOWED;
3385
3386         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3387         if (!center_chan)
3388                 return NOT_ALLOWED;
3389         if (center_chan >= 58 && center_chan <= 138)
3390                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3391
3392         /* check all the channels are available */
3393         for (i = 0; i < 4; i++) {
3394                 int adj_chan = center_chan - 6 + i * 4;
3395
3396                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3397                 if (res == NOT_ALLOWED)
3398                         return NOT_ALLOWED;
3399                 if (res == NO_IR)
3400                         ret = NO_IR;
3401
3402                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3403                         return NOT_ALLOWED;
3404                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3405                         return NOT_ALLOWED;
3406                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3407                         return NOT_ALLOWED;
3408                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3409                         return NOT_ALLOWED;
3410         }
3411
3412         return ret;
3413 }
3414
3415
3416 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3417                                      struct hostapd_hw_modes *mode,
3418                                      u8 channel)
3419 {
3420         u8 center_channels[] = { 50, 114 };
3421         unsigned int i;
3422
3423         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3424                 return 0;
3425
3426         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3427                 /*
3428                  * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3429                  * so the center channel is 14 channels away from the start/end.
3430                  */
3431                 if (channel >= center_channels[i] - 14 &&
3432                     channel <= center_channels[i] + 14)
3433                         return center_channels[i];
3434
3435         return 0;
3436 }
3437
3438
3439 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3440                                                struct hostapd_hw_modes *mode,
3441                                                u8 channel, u8 bw)
3442 {
3443         u8 center_chan;
3444         int i, flags;
3445         enum chan_allowed res, ret = ALLOWED;
3446
3447         center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3448         if (!center_chan)
3449                 return NOT_ALLOWED;
3450         /* VHT 160 MHz uses DFS channels in most countries. */
3451
3452         /* Check all the channels are available */
3453         for (i = 0; i < 8; i++) {
3454                 int adj_chan = center_chan - 14 + i * 4;
3455
3456                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3457                 if (res == NOT_ALLOWED)
3458                         return NOT_ALLOWED;
3459
3460                 if (res == NO_IR)
3461                         ret = NO_IR;
3462
3463                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3464                         return NOT_ALLOWED;
3465                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3466                         return NOT_ALLOWED;
3467                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3468                         return NOT_ALLOWED;
3469                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3470                         return NOT_ALLOWED;
3471                 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3472                         return NOT_ALLOWED;
3473                 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3474                         return NOT_ALLOWED;
3475                 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3476                         return NOT_ALLOWED;
3477                 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3478                         return NOT_ALLOWED;
3479         }
3480
3481         return ret;
3482 }
3483
3484
3485 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3486                                                  struct hostapd_hw_modes *mode,
3487                                                  u8 channel, u8 bw)
3488 {
3489         int flag = 0;
3490         enum chan_allowed res, res2;
3491
3492         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3493         if (bw == BW40MINUS) {
3494                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3495                         return NOT_ALLOWED;
3496                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3497         } else if (bw == BW40PLUS) {
3498                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3499                         return NOT_ALLOWED;
3500                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3501         } else if (bw == BW80) {
3502                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3503         } else if (bw == BW160) {
3504                 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3505         }
3506
3507         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3508                 return NOT_ALLOWED;
3509         if (res == NO_IR || res2 == NO_IR)
3510                 return NO_IR;
3511         return res;
3512 }
3513
3514
3515 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3516                                    struct p2p_channels *chan,
3517                                    struct p2p_channels *cli_chan)
3518 {
3519         struct hostapd_hw_modes *mode;
3520         int cla, op, cli_cla;
3521
3522         if (wpa_s->hw.modes == NULL) {
3523                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3524                            "of all supported channels; assume dualband "
3525                            "support");
3526                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3527         }
3528
3529         cla = cli_cla = 0;
3530
3531         for (op = 0; global_op_class[op].op_class; op++) {
3532                 const struct oper_class_map *o = &global_op_class[op];
3533                 u8 ch;
3534                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3535
3536                 if (o->p2p == NO_P2P_SUPP)
3537                         continue;
3538
3539                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3540                 if (mode == NULL)
3541                         continue;
3542                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3543                         wpa_s->global->p2p_24ghz_social_channels = 1;
3544                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3545                         enum chan_allowed res;
3546                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3547                         if (res == ALLOWED) {
3548                                 if (reg == NULL) {
3549                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3550                                                    o->op_class);
3551                                         reg = &chan->reg_class[cla];
3552                                         cla++;
3553                                         reg->reg_class = o->op_class;
3554                                 }
3555                                 reg->channel[reg->channels] = ch;
3556                                 reg->channels++;
3557                         } else if (res == NO_IR &&
3558                                    wpa_s->conf->p2p_add_cli_chan) {
3559                                 if (cli_reg == NULL) {
3560                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3561                                                    o->op_class);
3562                                         cli_reg = &cli_chan->reg_class[cli_cla];
3563                                         cli_cla++;
3564                                         cli_reg->reg_class = o->op_class;
3565                                 }
3566                                 cli_reg->channel[cli_reg->channels] = ch;
3567                                 cli_reg->channels++;
3568                         }
3569                 }
3570                 if (reg) {
3571                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3572                                     reg->channel, reg->channels);
3573                 }
3574                 if (cli_reg) {
3575                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3576                                     cli_reg->channel, cli_reg->channels);
3577                 }
3578         }
3579
3580         chan->reg_classes = cla;
3581         cli_chan->reg_classes = cli_cla;
3582
3583         return 0;
3584 }
3585
3586
3587 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3588                            struct hostapd_hw_modes *mode, u8 channel)
3589 {
3590         int op;
3591         enum chan_allowed ret;
3592
3593         for (op = 0; global_op_class[op].op_class; op++) {
3594                 const struct oper_class_map *o = &global_op_class[op];
3595                 u8 ch;
3596
3597                 if (o->p2p == NO_P2P_SUPP)
3598                         continue;
3599
3600                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3601                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3602                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3603                             ch != channel)
3604                                 continue;
3605                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3606                         if (ret == ALLOWED)
3607                                 return (o->bw == BW40MINUS) ? -1 : 1;
3608                 }
3609         }
3610         return 0;
3611 }
3612
3613
3614 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3615                               struct hostapd_hw_modes *mode, u8 channel)
3616 {
3617         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3618                 return 0;
3619
3620         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3621 }
3622
3623
3624 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3625                                struct hostapd_hw_modes *mode, u8 channel)
3626 {
3627         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3628                 return 0;
3629         return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3630 }
3631
3632
3633 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3634                         size_t buf_len)
3635 {
3636         struct wpa_supplicant *wpa_s = ctx;
3637
3638         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3639                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3640                         break;
3641         }
3642         if (wpa_s == NULL)
3643                 return -1;
3644
3645         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3646 }
3647
3648
3649 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3650                                               const u8 *ssid, size_t ssid_len)
3651 {
3652         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3653                 struct wpa_ssid *s = wpa_s->current_ssid;
3654                 if (s == NULL)
3655                         continue;
3656                 if (s->mode != WPAS_MODE_P2P_GO &&
3657                     s->mode != WPAS_MODE_AP &&
3658                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3659                         continue;
3660                 if (s->ssid_len != ssid_len ||
3661                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3662                         continue;
3663                 return wpa_s;
3664         }
3665
3666         return NULL;
3667
3668 }
3669
3670
3671 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3672                                                   const u8 *peer_dev_addr)
3673 {
3674         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3675                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3676                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3677                         continue;
3678                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3679                         return wpa_s;
3680         }
3681
3682         return NULL;
3683 }
3684
3685
3686 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3687 {
3688         struct wpa_supplicant *wpa_s = ctx;
3689
3690         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3691 }
3692
3693
3694 static int wpas_is_concurrent_session_active(void *ctx)
3695 {
3696         struct wpa_supplicant *wpa_s = ctx;
3697         struct wpa_supplicant *ifs;
3698
3699         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3700                 if (ifs == wpa_s)
3701                         continue;
3702                 if (ifs->wpa_state > WPA_ASSOCIATED)
3703                         return 1;
3704         }
3705         return 0;
3706 }
3707
3708
3709 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3710 {
3711         struct wpa_supplicant *wpa_s = ctx;
3712         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3713 }
3714
3715
3716 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3717                                   const char *conf_p2p_dev)
3718 {
3719         struct wpa_interface iface;
3720         struct wpa_supplicant *p2pdev_wpa_s;
3721         char ifname[100];
3722         char force_name[100];
3723         int ret;
3724
3725         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3726                           wpa_s->ifname);
3727         if (os_snprintf_error(sizeof(ifname), ret))
3728                 return -1;
3729         force_name[0] = '\0';
3730         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3731         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3732                              force_name, wpa_s->pending_interface_addr, NULL);
3733         if (ret < 0) {
3734                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3735                 return ret;
3736         }
3737         os_strlcpy(wpa_s->pending_interface_name, ifname,
3738                    sizeof(wpa_s->pending_interface_name));
3739
3740         os_memset(&iface, 0, sizeof(iface));
3741         iface.p2p_mgmt = 1;
3742         iface.ifname = wpa_s->pending_interface_name;
3743         iface.driver = wpa_s->driver->name;
3744         iface.driver_param = wpa_s->conf->driver_param;
3745
3746         /*
3747          * If a P2P Device configuration file was given, use it as the interface
3748          * configuration file (instead of using parent's configuration file.
3749          */
3750         if (conf_p2p_dev) {
3751                 iface.confname = conf_p2p_dev;
3752                 iface.ctrl_interface = NULL;
3753         } else {
3754                 iface.confname = wpa_s->confname;
3755                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3756         }
3757
3758         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3759         if (!p2pdev_wpa_s) {
3760                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3761                 return -1;
3762         }
3763
3764         p2pdev_wpa_s->p2pdev = p2pdev_wpa_s;
3765         wpa_s->pending_interface_name[0] = '\0';
3766         return 0;
3767 }
3768
3769
3770 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3771                                const u8 *noa, size_t noa_len)
3772 {
3773         struct wpa_supplicant *wpa_s, *intf = ctx;
3774         char hex[100];
3775
3776         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3777                 if (wpa_s->waiting_presence_resp)
3778                         break;
3779         }
3780         if (!wpa_s) {
3781                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3782                 return;
3783         }
3784         wpa_s->waiting_presence_resp = 0;
3785
3786         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3787         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3788                 " status=%u noa=%s", MAC2STR(src), status, hex);
3789 }
3790
3791
3792 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3793                                      size_t ssid_len, u8 *go_dev_addr,
3794                                      u8 *ret_ssid, size_t *ret_ssid_len,
3795                                      u8 *intended_iface_addr)
3796 {
3797         struct wpa_supplicant *wpa_s = ctx;
3798         struct wpa_ssid *s;
3799
3800         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3801         if (s) {
3802                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3803                 *ret_ssid_len = s->ssid_len;
3804                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3805
3806                 if (s->mode != WPAS_MODE_P2P_GO) {
3807                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3808                 } else if (wpas_p2p_create_iface(wpa_s)) {
3809                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3810                                 return 0;
3811
3812                         os_memcpy(intended_iface_addr,
3813                                   wpa_s->pending_interface_addr, ETH_ALEN);
3814                 } else {
3815                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3816                                   ETH_ALEN);
3817                 }
3818                 return 1;
3819         }
3820
3821         return 0;
3822 }
3823
3824
3825 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3826                             u8 *ssid, size_t *ssid_len, int *group_iface,
3827                             unsigned int *freq)
3828 {
3829         struct wpa_supplicant *wpa_s = ctx;
3830         struct wpa_supplicant *go;
3831         struct wpa_ssid *s;
3832
3833         /*
3834          * group_iface will be set to 1 only if a dedicated interface for P2P
3835          * role is required. First, we try to reuse an active GO. However,
3836          * if it is not present, we will try to reactivate an existing
3837          * persistent group and set group_iface to 1, so the caller will know
3838          * that the pending interface should be used.
3839          */
3840         *group_iface = 0;
3841
3842         if (freq)
3843                 *freq = 0;
3844
3845         go = wpas_p2p_get_go_group(wpa_s);
3846         if (!go) {
3847                 s = wpas_p2p_get_persistent_go(wpa_s);
3848                 *group_iface = wpas_p2p_create_iface(wpa_s);
3849                 if (s)
3850                         os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3851                 else
3852                         return 0;
3853         } else {
3854                 s = go->current_ssid;
3855                 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3856                 if (freq)
3857                         *freq = go->assoc_freq;
3858         }
3859
3860         os_memcpy(ssid, s->ssid, s->ssid_len);
3861         *ssid_len = s->ssid_len;
3862
3863         return 1;
3864 }
3865
3866
3867 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3868                                     const u8 *ssid, size_t ssid_len)
3869 {
3870         struct wpa_supplicant *wpa_s = ctx;
3871         struct wpa_ssid *s;
3872         int save_config = 0;
3873         size_t i;
3874
3875         /* Start with our first choice of Persistent Groups */
3876         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3877                 if (go && ssid && ssid_len &&
3878                     s->ssid_len == ssid_len &&
3879                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3880                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3881                         break;
3882
3883                 /* Remove stale persistent group */
3884                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3885                         wpa_config_remove_network(wpa_s->conf, s->id);
3886                         save_config = 1;
3887                         continue;
3888                 }
3889
3890                 for (i = 0; i < s->num_p2p_clients; i++) {
3891                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3892                                       peer, ETH_ALEN) != 0)
3893                                 continue;
3894
3895                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3896                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3897                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3898                         break;
3899                 }
3900                 s->num_p2p_clients--;
3901                 save_config = 1;
3902         }
3903
3904         if (save_config)
3905                 p2p_config_write(wpa_s);
3906
3907         /* Return TRUE if valid SSID remains */
3908         return s != NULL;
3909 }
3910
3911
3912 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3913                                        const u8 *feat_cap, size_t feat_cap_len)
3914 {
3915         static const char pref[] = " feature_cap=";
3916         int ret;
3917
3918         buf[0] = '\0';
3919
3920         /*
3921          * We expect a feature capability to contain at least one byte to be
3922          * reported. The string buffer provided by the caller function is
3923          * expected to be big enough to contain all bytes of the attribute for
3924          * known specifications. This function truncates the reported bytes if
3925          * the feature capability data exceeds the string buffer size.
3926          */
3927         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3928                 return;
3929
3930         os_memcpy(buf, pref, sizeof(pref));
3931         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3932                                buf_len - sizeof(pref) + 1,
3933                                feat_cap, feat_cap_len);
3934
3935         if (ret != (2 * (int) feat_cap_len))
3936                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3937 }
3938
3939
3940 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3941                                     const u8 *adv_mac, const u8 *ses_mac,
3942                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3943                                     u8 conncap, int passwd_id,
3944                                     const u8 *persist_ssid,
3945                                     size_t persist_ssid_size, int response_done,
3946                                     int prov_start, const char *session_info,
3947                                     const u8 *feat_cap, size_t feat_cap_len,
3948                                     unsigned int freq,
3949                                     const u8 *group_ssid, size_t group_ssid_len)
3950 {
3951         struct wpa_supplicant *wpa_s = ctx;
3952         u8 mac[ETH_ALEN];
3953         struct wpa_ssid *persistent_go, *stale, *s = NULL;
3954         int save_config = 0;
3955         struct wpa_supplicant *go_wpa_s;
3956         char feat_cap_str[256];
3957
3958         if (!dev)
3959                 return;
3960
3961         os_memset(mac, 0, ETH_ALEN);
3962         if (!adv_mac)
3963                 adv_mac = mac;
3964         if (!ses_mac)
3965                 ses_mac = mac;
3966         if (!grp_mac)
3967                 grp_mac = mac;
3968
3969         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3970                                    feat_cap, feat_cap_len);
3971
3972         if (prov_start) {
3973                 if (session_info == NULL) {
3974                         wpa_msg_global(wpa_s, MSG_INFO,
3975                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3976                                        " adv_id=%x conncap=%x"
3977                                        " adv_mac=" MACSTR
3978                                        " session=%x mac=" MACSTR
3979                                        " dev_passwd_id=%d%s",
3980                                        MAC2STR(dev), adv_id, conncap,
3981                                        MAC2STR(adv_mac),
3982                                        ses_id, MAC2STR(ses_mac),
3983                                        passwd_id, feat_cap_str);
3984                 } else {
3985                         wpa_msg_global(wpa_s, MSG_INFO,
3986                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3987                                        " adv_id=%x conncap=%x"
3988                                        " adv_mac=" MACSTR
3989                                        " session=%x mac=" MACSTR
3990                                        " dev_passwd_id=%d info='%s'%s",
3991                                        MAC2STR(dev), adv_id, conncap,
3992                                        MAC2STR(adv_mac),
3993                                        ses_id, MAC2STR(ses_mac),
3994                                        passwd_id, session_info, feat_cap_str);
3995                 }
3996                 return;
3997         }
3998
3999         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
4000         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4001
4002         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4003                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4004                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4005
4006                 if (persistent_go && !persistent_go->num_p2p_clients) {
4007                         /* remove empty persistent GO */
4008                         wpa_config_remove_network(wpa_s->conf,
4009                                                   persistent_go->id);
4010                 }
4011
4012                 wpa_msg_global(wpa_s, MSG_INFO,
4013                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4014                                " status=%d"
4015                                " adv_id=%x adv_mac=" MACSTR
4016                                " session=%x mac=" MACSTR "%s",
4017                                MAC2STR(dev), status,
4018                                adv_id, MAC2STR(adv_mac),
4019                                ses_id, MAC2STR(ses_mac), feat_cap_str);
4020                 return;
4021         }
4022
4023         /* Clean up stale persistent groups with this device */
4024         if (persist_ssid && persist_ssid_size)
4025                 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4026                                             persist_ssid_size);
4027
4028         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4029             is_zero_ether_addr(grp_mac)) {
4030                 wpa_dbg(wpa_s, MSG_ERROR,
4031                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4032                 return;
4033         }
4034
4035         for (;;) {
4036                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4037                 if (!stale)
4038                         break;
4039
4040                 if (s && s->ssid_len == stale->ssid_len &&
4041                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4042                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4043                         break;
4044
4045                 /* Remove stale persistent group */
4046                 if (stale->mode != WPAS_MODE_P2P_GO ||
4047                     stale->num_p2p_clients <= 1) {
4048                         wpa_config_remove_network(wpa_s->conf, stale->id);
4049                 } else {
4050                         size_t i;
4051
4052                         for (i = 0; i < stale->num_p2p_clients; i++) {
4053                                 if (os_memcmp(stale->p2p_client_list +
4054                                               i * ETH_ALEN,
4055                                               dev, ETH_ALEN) == 0) {
4056                                         os_memmove(stale->p2p_client_list +
4057                                                    i * ETH_ALEN,
4058                                                    stale->p2p_client_list +
4059                                                    (i + 1) * ETH_ALEN,
4060                                                    (stale->num_p2p_clients -
4061                                                     i - 1) * ETH_ALEN);
4062                                         break;
4063                                 }
4064                         }
4065                         stale->num_p2p_clients--;
4066                 }
4067                 save_config = 1;
4068         }
4069
4070         if (save_config)
4071                 p2p_config_write(wpa_s);
4072
4073         if (s) {
4074                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4075                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4076
4077                 if (persistent_go && s != persistent_go &&
4078                     !persistent_go->num_p2p_clients) {
4079                         /* remove empty persistent GO */
4080                         wpa_config_remove_network(wpa_s->conf,
4081                                                   persistent_go->id);
4082                         /* Save config */
4083                 }
4084
4085                 wpa_msg_global(wpa_s, MSG_INFO,
4086                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4087                                " status=%d"
4088                                " adv_id=%x adv_mac=" MACSTR
4089                                " session=%x mac=" MACSTR
4090                                " persist=%d%s",
4091                                MAC2STR(dev), status,
4092                                adv_id, MAC2STR(adv_mac),
4093                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4094                 return;
4095         }
4096
4097         if (conncap == P2PS_SETUP_GROUP_OWNER) {
4098                 /*
4099                  * We need to copy the interface name. Simply saving a
4100                  * pointer isn't enough, since if we use pending_interface_name
4101                  * it will be overwritten when the group is added.
4102                  */
4103                 char go_ifname[100];
4104
4105                 go_ifname[0] = '\0';
4106                 if (!go_wpa_s) {
4107                         wpa_s->global->pending_p2ps_group = 1;
4108                         wpa_s->global->pending_p2ps_group_freq = freq;
4109
4110                         if (!wpas_p2p_create_iface(wpa_s))
4111                                 os_memcpy(go_ifname, wpa_s->ifname,
4112                                           sizeof(go_ifname));
4113                         else if (wpa_s->pending_interface_name[0])
4114                                 os_memcpy(go_ifname,
4115                                           wpa_s->pending_interface_name,
4116                                           sizeof(go_ifname));
4117
4118                         if (!go_ifname[0]) {
4119                                 wpas_p2ps_prov_complete(
4120                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4121                                         dev, adv_mac, ses_mac,
4122                                         grp_mac, adv_id, ses_id, 0, 0,
4123                                         NULL, 0, 0, 0, NULL, NULL, 0, 0,
4124                                         NULL, 0);
4125                                 return;
4126                         }
4127
4128                         /* If PD Resp complete, start up the GO */
4129                         if (response_done && persistent_go) {
4130                                 wpas_p2p_group_add_persistent(
4131                                         wpa_s, persistent_go,
4132                                         0, 0, freq, 0, 0, 0, 0, NULL,
4133                                         persistent_go->mode ==
4134                                         WPAS_MODE_P2P_GO ?
4135                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4136                                         0, 0);
4137                         } else if (response_done) {
4138                                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4139                         }
4140
4141                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4142                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4143                                           ETH_ALEN);
4144                                 wpa_s->p2ps_method_config_any = 1;
4145                         }
4146                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4147                         os_memcpy(go_ifname, go_wpa_s->ifname,
4148                                   sizeof(go_ifname));
4149
4150                         if (is_zero_ether_addr(grp_mac)) {
4151                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4152                                         "P2P: Setting PIN-1 for ANY");
4153                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4154                                                           "12345670", NULL, 0,
4155                                                           0);
4156                         } else {
4157                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4158                                         "P2P: Setting PIN-1 for " MACSTR,
4159                                         MAC2STR(grp_mac));
4160                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4161                                                           "12345670", NULL, 0,
4162                                                           0);
4163                         }
4164
4165                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4166                         wpa_s->p2ps_method_config_any = 1;
4167                 }
4168
4169                 wpa_msg_global(wpa_s, MSG_INFO,
4170                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4171                                " status=%d conncap=%x"
4172                                " adv_id=%x adv_mac=" MACSTR
4173                                " session=%x mac=" MACSTR
4174                                " dev_passwd_id=%d go=%s%s",
4175                                MAC2STR(dev), status, conncap,
4176                                adv_id, MAC2STR(adv_mac),
4177                                ses_id, MAC2STR(ses_mac),
4178                                passwd_id, go_ifname, feat_cap_str);
4179                 return;
4180         }
4181
4182         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4183                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4184
4185         if (persistent_go && !persistent_go->num_p2p_clients) {
4186                 /* remove empty persistent GO */
4187                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4188         }
4189
4190         if (conncap == P2PS_SETUP_CLIENT) {
4191                 char ssid_hex[32 * 2 + 1];
4192
4193                 if (group_ssid)
4194                         wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex),
4195                                          group_ssid, group_ssid_len);
4196                 else
4197                         ssid_hex[0] = '\0';
4198                 wpa_msg_global(wpa_s, MSG_INFO,
4199                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4200                                " status=%d conncap=%x"
4201                                " adv_id=%x adv_mac=" MACSTR
4202                                " session=%x mac=" MACSTR
4203                                " dev_passwd_id=%d join=" MACSTR "%s%s%s",
4204                                MAC2STR(dev), status, conncap,
4205                                adv_id, MAC2STR(adv_mac),
4206                                ses_id, MAC2STR(ses_mac),
4207                                passwd_id, MAC2STR(grp_mac), feat_cap_str,
4208                                group_ssid ? " group_ssid=" : "", ssid_hex);
4209         } else {
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%s",
4216                                MAC2STR(dev), status, conncap,
4217                                adv_id, MAC2STR(adv_mac),
4218                                ses_id, MAC2STR(ses_mac),
4219                                passwd_id, feat_cap_str);
4220         }
4221 }
4222
4223
4224 static int _wpas_p2p_in_progress(void *ctx)
4225 {
4226         struct wpa_supplicant *wpa_s = ctx;
4227         return wpas_p2p_in_progress(wpa_s);
4228 }
4229
4230
4231 static int wpas_prov_disc_resp_cb(void *ctx)
4232 {
4233         struct wpa_supplicant *wpa_s = ctx;
4234         struct wpa_ssid *persistent_go;
4235         unsigned int freq;
4236
4237         if (!wpa_s->global->pending_p2ps_group)
4238                 return 0;
4239
4240         freq = wpa_s->global->pending_p2ps_group_freq;
4241         wpa_s->global->pending_p2ps_group_freq = 0;
4242         wpa_s->global->pending_p2ps_group = 0;
4243
4244         if (wpas_p2p_get_go_group(wpa_s))
4245                 return 0;
4246         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4247
4248         if (persistent_go) {
4249                 wpas_p2p_group_add_persistent(
4250                         wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL,
4251                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4252                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4253         } else {
4254                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4255         }
4256
4257         return 1;
4258 }
4259
4260
4261 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4262                                        unsigned int *len,
4263                                        unsigned int *freq_list)
4264 {
4265         struct wpa_supplicant *wpa_s = ctx;
4266
4267         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4268                                           WPA_IF_P2P_CLIENT, len, freq_list);
4269 }
4270
4271
4272 /**
4273  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4274  * @global: Pointer to global data from wpa_supplicant_init()
4275  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4276  * Returns: 0 on success, -1 on failure
4277  */
4278 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4279 {
4280         struct p2p_config p2p;
4281         int i;
4282
4283         if (wpa_s->conf->p2p_disabled)
4284                 return 0;
4285
4286         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4287                 return 0;
4288
4289         if (global->p2p)
4290                 return 0;
4291
4292         os_memset(&p2p, 0, sizeof(p2p));
4293         p2p.cb_ctx = wpa_s;
4294         p2p.debug_print = wpas_p2p_debug_print;
4295         p2p.p2p_scan = wpas_p2p_scan;
4296         p2p.send_action = wpas_send_action;
4297         p2p.send_action_done = wpas_send_action_done;
4298         p2p.go_neg_completed = wpas_go_neg_completed;
4299         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4300         p2p.dev_found = wpas_dev_found;
4301         p2p.dev_lost = wpas_dev_lost;
4302         p2p.find_stopped = wpas_find_stopped;
4303         p2p.start_listen = wpas_start_listen;
4304         p2p.stop_listen = wpas_stop_listen;
4305         p2p.send_probe_resp = wpas_send_probe_resp;
4306         p2p.sd_request = wpas_sd_request;
4307         p2p.sd_response = wpas_sd_response;
4308         p2p.prov_disc_req = wpas_prov_disc_req;
4309         p2p.prov_disc_resp = wpas_prov_disc_resp;
4310         p2p.prov_disc_fail = wpas_prov_disc_fail;
4311         p2p.invitation_process = wpas_invitation_process;
4312         p2p.invitation_received = wpas_invitation_received;
4313         p2p.invitation_result = wpas_invitation_result;
4314         p2p.get_noa = wpas_get_noa;
4315         p2p.go_connected = wpas_go_connected;
4316         p2p.presence_resp = wpas_presence_resp;
4317         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4318         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4319         p2p.get_persistent_group = wpas_get_persistent_group;
4320         p2p.get_go_info = wpas_get_go_info;
4321         p2p.remove_stale_groups = wpas_remove_stale_groups;
4322         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4323         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4324         p2p.p2ps_group_capability = p2ps_group_capability;
4325         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4326
4327         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4328         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4329         p2p.dev_name = wpa_s->conf->device_name;
4330         p2p.manufacturer = wpa_s->conf->manufacturer;
4331         p2p.model_name = wpa_s->conf->model_name;
4332         p2p.model_number = wpa_s->conf->model_number;
4333         p2p.serial_number = wpa_s->conf->serial_number;
4334         if (wpa_s->wps) {
4335                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4336                 p2p.config_methods = wpa_s->wps->config_methods;
4337         }
4338
4339         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4340                 wpa_printf(MSG_ERROR,
4341                            "P2P: Failed to configure supported channel list");
4342                 return -1;
4343         }
4344
4345         if (wpa_s->conf->p2p_listen_reg_class &&
4346             wpa_s->conf->p2p_listen_channel) {
4347                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4348                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4349                 p2p.channel_forced = 1;
4350         } else {
4351                 /*
4352                  * Pick one of the social channels randomly as the listen
4353                  * channel.
4354                  */
4355                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4356                                                  &p2p.channel) != 0) {
4357                         wpa_printf(MSG_INFO,
4358                                    "P2P: No social channels supported by the driver - do not enable P2P");
4359                         return 0;
4360                 }
4361                 p2p.channel_forced = 0;
4362         }
4363         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4364                    p2p.reg_class, p2p.channel);
4365
4366         if (wpa_s->conf->p2p_oper_reg_class &&
4367             wpa_s->conf->p2p_oper_channel) {
4368                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4369                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4370                 p2p.cfg_op_channel = 1;
4371                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4372                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4373
4374         } else {
4375                 /*
4376                  * Use random operation channel from 2.4 GHz band social
4377                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4378                  * other preference is indicated.
4379                  */
4380                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4381                                                  &p2p.op_channel) != 0) {
4382                         wpa_printf(MSG_ERROR,
4383                                    "P2P: Failed to select random social channel as operation channel");
4384                         return -1;
4385                 }
4386                 p2p.cfg_op_channel = 0;
4387                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4388                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4389         }
4390
4391         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4392                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4393                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4394         }
4395
4396         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4397                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4398                 p2p.country[2] = 0x04;
4399         } else
4400                 os_memcpy(p2p.country, "XX\x04", 3);
4401
4402         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4403                   WPS_DEV_TYPE_LEN);
4404
4405         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4406         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4407                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4408
4409         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4410                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4411
4412         p2p.max_peers = 100;
4413
4414         if (wpa_s->conf->p2p_ssid_postfix) {
4415                 p2p.ssid_postfix_len =
4416                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4417                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4418                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4419                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4420                           p2p.ssid_postfix_len);
4421         }
4422
4423         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4424
4425         p2p.max_listen = wpa_s->max_remain_on_chan;
4426
4427         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4428             wpa_s->conf->p2p_passphrase_len <= 63)
4429                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4430         else
4431                 p2p.passphrase_len = 8;
4432
4433         global->p2p = p2p_init(&p2p);
4434         if (global->p2p == NULL)
4435                 return -1;
4436         global->p2p_init_wpa_s = wpa_s;
4437
4438         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4439                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4440                         continue;
4441                 p2p_add_wps_vendor_extension(
4442                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4443         }
4444
4445         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4446
4447         return 0;
4448 }
4449
4450
4451 /**
4452  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4453  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4454  *
4455  * This function deinitialize per-interface P2P data.
4456  */
4457 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4458 {
4459         if (wpa_s->driver && wpa_s->drv_priv)
4460                 wpa_drv_probe_req_report(wpa_s, 0);
4461
4462         if (wpa_s->go_params) {
4463                 /* Clear any stored provisioning info */
4464                 p2p_clear_provisioning_info(
4465                         wpa_s->global->p2p,
4466                         wpa_s->go_params->peer_device_addr);
4467         }
4468
4469         os_free(wpa_s->go_params);
4470         wpa_s->go_params = NULL;
4471         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4472         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4473         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4474         wpa_s->p2p_long_listen = 0;
4475         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4476         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4477         wpas_p2p_remove_pending_group_interface(wpa_s);
4478         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4479         wpas_p2p_listen_work_done(wpa_s);
4480         if (wpa_s->p2p_send_action_work) {
4481                 os_free(wpa_s->p2p_send_action_work->ctx);
4482                 radio_work_done(wpa_s->p2p_send_action_work);
4483                 wpa_s->p2p_send_action_work = NULL;
4484         }
4485         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4486
4487         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4488         wpa_s->p2p_oob_dev_pw = NULL;
4489
4490         os_free(wpa_s->p2p_group_common_freqs);
4491         wpa_s->p2p_group_common_freqs = NULL;
4492         wpa_s->p2p_group_common_freqs_num = 0;
4493
4494         /* TODO: remove group interface from the driver if this wpa_s instance
4495          * is on top of a P2P group interface */
4496 }
4497
4498
4499 /**
4500  * wpas_p2p_deinit_global - Deinitialize global P2P module
4501  * @global: Pointer to global data from wpa_supplicant_init()
4502  *
4503  * This function deinitializes the global (per device) P2P module.
4504  */
4505 static void wpas_p2p_deinit_global(struct wpa_global *global)
4506 {
4507         struct wpa_supplicant *wpa_s, *tmp;
4508
4509         wpa_s = global->ifaces;
4510
4511         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4512
4513         /* Remove remaining P2P group interfaces */
4514         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4515                 wpa_s = wpa_s->next;
4516         while (wpa_s) {
4517                 tmp = global->ifaces;
4518                 while (tmp &&
4519                        (tmp == wpa_s ||
4520                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4521                         tmp = tmp->next;
4522                 }
4523                 if (tmp == NULL)
4524                         break;
4525                 /* Disconnect from the P2P group and deinit the interface */
4526                 wpas_p2p_disconnect(tmp);
4527         }
4528
4529         /*
4530          * Deinit GO data on any possibly remaining interface (if main
4531          * interface is used as GO).
4532          */
4533         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4534                 if (wpa_s->ap_iface)
4535                         wpas_p2p_group_deinit(wpa_s);
4536         }
4537
4538         p2p_deinit(global->p2p);
4539         global->p2p = NULL;
4540         global->p2p_init_wpa_s = NULL;
4541 }
4542
4543
4544 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4545 {
4546         if (wpa_s->conf->p2p_no_group_iface)
4547                 return 0; /* separate interface disabled per configuration */
4548         if (wpa_s->drv_flags &
4549             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4550              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4551                 return 1; /* P2P group requires a new interface in every case
4552                            */
4553         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4554                 return 0; /* driver does not support concurrent operations */
4555         if (wpa_s->global->ifaces->next)
4556                 return 1; /* more that one interface already in use */
4557         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4558                 return 1; /* this interface is already in use */
4559         return 0;
4560 }
4561
4562
4563 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4564                                  const u8 *peer_addr,
4565                                  enum p2p_wps_method wps_method,
4566                                  int go_intent, const u8 *own_interface_addr,
4567                                  unsigned int force_freq, int persistent_group,
4568                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4569 {
4570         if (persistent_group && wpa_s->conf->persistent_reconnect)
4571                 persistent_group = 2;
4572
4573         /*
4574          * Increase GO config timeout if HT40 is used since it takes some time
4575          * to scan channels for coex purposes before the BSS can be started.
4576          */
4577         p2p_set_config_timeout(wpa_s->global->p2p,
4578                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4579
4580         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4581                            go_intent, own_interface_addr, force_freq,
4582                            persistent_group, ssid ? ssid->ssid : NULL,
4583                            ssid ? ssid->ssid_len : 0,
4584                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4585                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4586                            0);
4587 }
4588
4589
4590 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4591                                 const u8 *peer_addr,
4592                                 enum p2p_wps_method wps_method,
4593                                 int go_intent, const u8 *own_interface_addr,
4594                                 unsigned int force_freq, int persistent_group,
4595                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4596 {
4597         if (persistent_group && wpa_s->conf->persistent_reconnect)
4598                 persistent_group = 2;
4599
4600         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4601                              go_intent, own_interface_addr, force_freq,
4602                              persistent_group, ssid ? ssid->ssid : NULL,
4603                              ssid ? ssid->ssid_len : 0, pref_freq,
4604                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4605                              0);
4606 }
4607
4608
4609 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4610 {
4611         wpa_s->p2p_join_scan_count++;
4612         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4613                    wpa_s->p2p_join_scan_count);
4614         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4615                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4616                            " for join operationg - stop join attempt",
4617                            MAC2STR(wpa_s->pending_join_iface_addr));
4618                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4619                 if (wpa_s->p2p_auto_pd) {
4620                         wpa_s->p2p_auto_pd = 0;
4621                         wpa_msg_global(wpa_s, MSG_INFO,
4622                                        P2P_EVENT_PROV_DISC_FAILURE
4623                                        " p2p_dev_addr=" MACSTR " status=N/A",
4624                                        MAC2STR(wpa_s->pending_join_dev_addr));
4625                         return;
4626                 }
4627                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4628                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4629                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4630         }
4631 }
4632
4633
4634 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4635 {
4636         int res;
4637         unsigned int num, i;
4638         struct wpa_used_freq_data *freqs;
4639
4640         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4641                 /* Multiple channels are supported and not all are in use */
4642                 return 0;
4643         }
4644
4645         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4646                           sizeof(struct wpa_used_freq_data));
4647         if (!freqs)
4648                 return 1;
4649
4650         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4651                                         wpa_s->num_multichan_concurrent);
4652
4653         for (i = 0; i < num; i++) {
4654                 if (freqs[i].freq == freq) {
4655                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4656                                    freq);
4657                         res = 0;
4658                         goto exit_free;
4659                 }
4660         }
4661
4662         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4663         res = 1;
4664
4665 exit_free:
4666         os_free(freqs);
4667         return res;
4668 }
4669
4670
4671 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4672                             const u8 *peer_dev_addr)
4673 {
4674         struct wpa_bss *bss;
4675         int updated;
4676
4677         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4678         if (bss == NULL)
4679                 return -1;
4680         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4681                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4682                            "last scan");
4683                 return 0;
4684         }
4685
4686         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4687                                     &bss->last_update);
4688         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4689                    "%ld.%06ld (%supdated in last scan)",
4690                    bss->last_update.sec, bss->last_update.usec,
4691                    updated ? "": "not ");
4692
4693         return updated;
4694 }
4695
4696
4697 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4698                                    struct wpa_scan_results *scan_res)
4699 {
4700         struct wpa_bss *bss = NULL;
4701         int freq;
4702         u8 iface_addr[ETH_ALEN];
4703
4704         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4705
4706         if (wpa_s->global->p2p_disabled)
4707                 return;
4708
4709         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4710                    scan_res ? (int) scan_res->num : -1,
4711                    wpa_s->p2p_auto_join ? "auto_" : "");
4712
4713         if (scan_res)
4714                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4715
4716         if (wpa_s->p2p_auto_pd) {
4717                 int join = wpas_p2p_peer_go(wpa_s,
4718                                             wpa_s->pending_join_dev_addr);
4719                 if (join == 0 &&
4720                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4721                         wpa_s->auto_pd_scan_retry++;
4722                         bss = wpa_bss_get_bssid_latest(
4723                                 wpa_s, wpa_s->pending_join_dev_addr);
4724                         if (bss) {
4725                                 freq = bss->freq;
4726                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4727                                            "the peer " MACSTR " at %d MHz",
4728                                            wpa_s->auto_pd_scan_retry,
4729                                            MAC2STR(wpa_s->
4730                                                    pending_join_dev_addr),
4731                                            freq);
4732                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4733                                 return;
4734                         }
4735                 }
4736
4737                 if (join < 0)
4738                         join = 0;
4739
4740                 wpa_s->p2p_auto_pd = 0;
4741                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4742                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4743                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4744                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4745                                       wpa_s->pending_join_dev_addr, NULL,
4746                                       wpa_s->pending_pd_config_methods, join,
4747                                       0, wpa_s->user_initiated_pd) < 0) {
4748                         wpa_s->p2p_auto_pd = 0;
4749                         wpa_msg_global(wpa_s, MSG_INFO,
4750                                        P2P_EVENT_PROV_DISC_FAILURE
4751                                        " p2p_dev_addr=" MACSTR " status=N/A",
4752                                        MAC2STR(wpa_s->pending_join_dev_addr));
4753                 }
4754                 return;
4755         }
4756
4757         if (wpa_s->p2p_auto_join) {
4758                 int join = wpas_p2p_peer_go(wpa_s,
4759                                             wpa_s->pending_join_dev_addr);
4760                 if (join < 0) {
4761                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4762                                    "running a GO -> use GO Negotiation");
4763                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4764                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4765                                        "reason=peer-not-running-GO");
4766                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4767                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4768                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4769                                          wpa_s->p2p_go_intent,
4770                                          wpa_s->p2p_connect_freq,
4771                                          wpa_s->p2p_go_vht_center_freq2,
4772                                          wpa_s->p2p_persistent_id,
4773                                          wpa_s->p2p_pd_before_go_neg,
4774                                          wpa_s->p2p_go_ht40,
4775                                          wpa_s->p2p_go_vht,
4776                                          wpa_s->p2p_go_max_oper_chwidth,
4777                                          NULL, 0);
4778                         return;
4779                 }
4780
4781                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4782                            "try to join the group", join ? "" :
4783                            " in older scan");
4784                 if (!join) {
4785                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4786                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4787                         wpa_s->p2p_fallback_to_go_neg = 1;
4788                 }
4789         }
4790
4791         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4792                                  wpa_s->pending_join_iface_addr);
4793         if (freq < 0 &&
4794             p2p_get_interface_addr(wpa_s->global->p2p,
4795                                    wpa_s->pending_join_dev_addr,
4796                                    iface_addr) == 0 &&
4797             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4798             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4799                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4800                            "address for join from " MACSTR " to " MACSTR
4801                            " based on newly discovered P2P peer entry",
4802                            MAC2STR(wpa_s->pending_join_iface_addr),
4803                            MAC2STR(iface_addr));
4804                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4805                           ETH_ALEN);
4806
4807                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4808                                          wpa_s->pending_join_iface_addr);
4809         }
4810         if (freq >= 0) {
4811                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4812                            "from P2P peer table: %d MHz", freq);
4813         }
4814         if (wpa_s->p2p_join_ssid_len) {
4815                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4816                            MACSTR " and SSID %s",
4817                            MAC2STR(wpa_s->pending_join_iface_addr),
4818                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4819                                         wpa_s->p2p_join_ssid_len));
4820                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4821                                   wpa_s->p2p_join_ssid,
4822                                   wpa_s->p2p_join_ssid_len);
4823         } else if (!bss) {
4824                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4825                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4826                 bss = wpa_bss_get_bssid_latest(wpa_s,
4827                                                wpa_s->pending_join_iface_addr);
4828         }
4829         if (bss) {
4830                 u8 dev_addr[ETH_ALEN];
4831
4832                 freq = bss->freq;
4833                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4834                            "from BSS table: %d MHz (SSID %s)", freq,
4835                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4836                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4837                                        dev_addr) == 0 &&
4838                     os_memcmp(wpa_s->pending_join_dev_addr,
4839                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4840                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4841                               ETH_ALEN) != 0) {
4842                         wpa_printf(MSG_DEBUG,
4843                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4844                                    MAC2STR(dev_addr),
4845                                    MAC2STR(wpa_s->pending_join_dev_addr));
4846                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4847                                   ETH_ALEN);
4848                 }
4849         }
4850         if (freq > 0) {
4851                 u16 method;
4852
4853                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4854                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4855                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4856                                        "reason=FREQ_CONFLICT");
4857                         wpas_notify_p2p_group_formation_failure(
4858                                 wpa_s, "FREQ_CONFLICT");
4859                         return;
4860                 }
4861
4862                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4863                            "prior to joining an existing group (GO " MACSTR
4864                            " freq=%u MHz)",
4865                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4866                 wpa_s->pending_pd_before_join = 1;
4867
4868                 switch (wpa_s->pending_join_wps_method) {
4869                 case WPS_PIN_DISPLAY:
4870                         method = WPS_CONFIG_KEYPAD;
4871                         break;
4872                 case WPS_PIN_KEYPAD:
4873                         method = WPS_CONFIG_DISPLAY;
4874                         break;
4875                 case WPS_PBC:
4876                         method = WPS_CONFIG_PUSHBUTTON;
4877                         break;
4878                 case WPS_P2PS:
4879                         method = WPS_CONFIG_P2PS;
4880                         break;
4881                 default:
4882                         method = 0;
4883                         break;
4884                 }
4885
4886                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4887                                                wpa_s->pending_join_dev_addr) ==
4888                      method)) {
4889                         /*
4890                          * We have already performed provision discovery for
4891                          * joining the group. Proceed directly to join
4892                          * operation without duplicated provision discovery. */
4893                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4894                                    "with " MACSTR " already done - proceed to "
4895                                    "join",
4896                                    MAC2STR(wpa_s->pending_join_dev_addr));
4897                         wpa_s->pending_pd_before_join = 0;
4898                         goto start;
4899                 }
4900
4901                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4902                                       wpa_s->pending_join_dev_addr,
4903                                       NULL, method, 1,
4904                                       freq, wpa_s->user_initiated_pd) < 0) {
4905                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4906                                    "Discovery Request before joining an "
4907                                    "existing group");
4908                         wpa_s->pending_pd_before_join = 0;
4909                         goto start;
4910                 }
4911                 return;
4912         }
4913
4914         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4915         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4916         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4917         wpas_p2p_check_join_scan_limit(wpa_s);
4918         return;
4919
4920 start:
4921         /* Start join operation immediately */
4922         wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid,
4923                             wpa_s->p2p_join_ssid_len);
4924 }
4925
4926
4927 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4928                                    const u8 *ssid, size_t ssid_len)
4929 {
4930         int ret;
4931         struct wpa_driver_scan_params params;
4932         struct wpabuf *wps_ie, *ies;
4933         size_t ielen;
4934         int freqs[2] = { 0, 0 };
4935         unsigned int bands;
4936
4937         os_memset(&params, 0, sizeof(params));
4938
4939         /* P2P Wildcard SSID */
4940         params.num_ssids = 1;
4941         if (ssid && ssid_len) {
4942                 params.ssids[0].ssid = ssid;
4943                 params.ssids[0].ssid_len = ssid_len;
4944                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4945                 wpa_s->p2p_join_ssid_len = ssid_len;
4946         } else {
4947                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4948                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4949                 wpa_s->p2p_join_ssid_len = 0;
4950         }
4951
4952         wpa_s->wps->dev.p2p = 1;
4953         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4954                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4955                                         NULL);
4956         if (wps_ie == NULL) {
4957                 wpas_p2p_scan_res_join(wpa_s, NULL);
4958                 return;
4959         }
4960
4961         if (!freq) {
4962                 int oper_freq;
4963                 /*
4964                  * If freq is not provided, check the operating freq of the GO
4965                  * and use a single channel scan on if possible.
4966                  */
4967                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4968                                               wpa_s->pending_join_iface_addr);
4969                 if (oper_freq > 0)
4970                         freq = oper_freq;
4971         }
4972         if (freq > 0) {
4973                 freqs[0] = freq;
4974                 params.freqs = freqs;
4975         }
4976
4977         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4978         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4979         if (ies == NULL) {
4980                 wpabuf_free(wps_ie);
4981                 wpas_p2p_scan_res_join(wpa_s, NULL);
4982                 return;
4983         }
4984         wpabuf_put_buf(ies, wps_ie);
4985         wpabuf_free(wps_ie);
4986
4987         bands = wpas_get_bands(wpa_s, freqs);
4988         p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
4989
4990         params.p2p_probe = 1;
4991         params.extra_ies = wpabuf_head(ies);
4992         params.extra_ies_len = wpabuf_len(ies);
4993
4994         /*
4995          * Run a scan to update BSS table and start Provision Discovery once
4996          * the new scan results become available.
4997          */
4998         ret = wpa_drv_scan(wpa_s, &params);
4999         if (!ret) {
5000                 os_get_reltime(&wpa_s->scan_trigger_time);
5001                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
5002                 wpa_s->own_scan_requested = 1;
5003         }
5004
5005         wpabuf_free(ies);
5006
5007         if (ret) {
5008                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5009                            "try again later");
5010                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5011                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5012                 wpas_p2p_check_join_scan_limit(wpa_s);
5013         }
5014 }
5015
5016
5017 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5018 {
5019         struct wpa_supplicant *wpa_s = eloop_ctx;
5020         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5021 }
5022
5023
5024 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5025                          const u8 *dev_addr, enum p2p_wps_method wps_method,
5026                          int auto_join, int op_freq,
5027                          const u8 *ssid, size_t ssid_len)
5028 {
5029         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5030                    MACSTR " dev " MACSTR " op_freq=%d)%s",
5031                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5032                    auto_join ? " (auto_join)" : "");
5033         if (ssid && ssid_len) {
5034                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5035                            wpa_ssid_txt(ssid, ssid_len));
5036         }
5037
5038         wpa_s->p2p_auto_pd = 0;
5039         wpa_s->p2p_auto_join = !!auto_join;
5040         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5041         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5042         wpa_s->pending_join_wps_method = wps_method;
5043
5044         /* Make sure we are not running find during connection establishment */
5045         wpas_p2p_stop_find(wpa_s);
5046
5047         wpa_s->p2p_join_scan_count = 0;
5048         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5049         return 0;
5050 }
5051
5052
5053 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5054                                const u8 *ssid, size_t ssid_len)
5055 {
5056         struct wpa_supplicant *group;
5057         struct p2p_go_neg_results res;
5058         struct wpa_bss *bss;
5059
5060         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5061         if (group == NULL)
5062                 return -1;
5063         if (group != wpa_s) {
5064                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5065                           sizeof(group->p2p_pin));
5066                 group->p2p_wps_method = wpa_s->p2p_wps_method;
5067         } else {
5068                 /*
5069                  * Need to mark the current interface for p2p_group_formation
5070                  * when a separate group interface is not used. This is needed
5071                  * to allow p2p_cancel stop a pending p2p_connect-join.
5072                  * wpas_p2p_init_group_interface() addresses this for the case
5073                  * where a separate group interface is used.
5074                  */
5075                 wpa_s->global->p2p_group_formation = wpa_s;
5076         }
5077
5078         group->p2p_in_provisioning = 1;
5079         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5080
5081         os_memset(&res, 0, sizeof(res));
5082         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5083         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5084                   ETH_ALEN);
5085         res.wps_method = wpa_s->pending_join_wps_method;
5086         if (freq && ssid && ssid_len) {
5087                 res.freq = freq;
5088                 res.ssid_len = ssid_len;
5089                 os_memcpy(res.ssid, ssid, ssid_len);
5090         } else {
5091                 if (ssid && ssid_len) {
5092                         bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
5093                                           ssid, ssid_len);
5094                 } else {
5095                         bss = wpa_bss_get_bssid_latest(
5096                                 wpa_s, wpa_s->pending_join_iface_addr);
5097                 }
5098                 if (bss) {
5099                         res.freq = bss->freq;
5100                         res.ssid_len = bss->ssid_len;
5101                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5102                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5103                                    bss->freq,
5104                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
5105                 } else if (ssid && ssid_len) {
5106                         res.ssid_len = ssid_len;
5107                         os_memcpy(res.ssid, ssid, ssid_len);
5108                         wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)",
5109                                    wpa_ssid_txt(ssid, ssid_len));
5110                 }
5111         }
5112
5113         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5114                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5115                            "starting client");
5116                 wpa_drv_cancel_remain_on_channel(wpa_s);
5117                 wpa_s->off_channel_freq = 0;
5118                 wpa_s->roc_waiting_drv_freq = 0;
5119         }
5120         wpas_start_wps_enrollee(group, &res);
5121
5122         /*
5123          * Allow a longer timeout for join-a-running-group than normal 15
5124          * second group formation timeout since the GO may not have authorized
5125          * our connection yet.
5126          */
5127         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5128         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5129                                wpa_s, NULL);
5130
5131         return 0;
5132 }
5133
5134
5135 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5136                                 int *force_freq, int *pref_freq, int go,
5137                                 unsigned int *pref_freq_list,
5138                                 unsigned int *num_pref_freq)
5139 {
5140         struct wpa_used_freq_data *freqs;
5141         int res, best_freq, num_unused;
5142         unsigned int freq_in_use = 0, num, i, max_pref_freq;
5143
5144         max_pref_freq = *num_pref_freq;
5145         *num_pref_freq = 0;
5146
5147         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5148                           sizeof(struct wpa_used_freq_data));
5149         if (!freqs)
5150                 return -1;
5151
5152         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5153                                         wpa_s->num_multichan_concurrent);
5154
5155         /*
5156          * It is possible that the total number of used frequencies is bigger
5157          * than the number of frequencies used for P2P, so get the system wide
5158          * number of unused frequencies.
5159          */
5160         num_unused = wpas_p2p_num_unused_channels(wpa_s);
5161
5162         wpa_printf(MSG_DEBUG,
5163                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5164                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
5165
5166         if (freq > 0) {
5167                 int ret;
5168                 if (go)
5169                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5170                 else
5171                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5172                 if (!ret) {
5173                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5174                             ieee80211_is_dfs(freq)) {
5175                                 /*
5176                                  * If freq is a DFS channel and DFS is offloaded
5177                                  * to the driver, allow P2P GO to use it.
5178                                  */
5179                                 wpa_printf(MSG_DEBUG,
5180                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5181                                            freq);
5182                         } else {
5183                                 wpa_printf(MSG_DEBUG,
5184                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5185                                            freq);
5186                                 res = -3;
5187                                 goto exit_free;
5188                         }
5189                 }
5190
5191                 for (i = 0; i < num; i++) {
5192                         if (freqs[i].freq == freq)
5193                                 freq_in_use = 1;
5194                 }
5195
5196                 if (num_unused <= 0 && !freq_in_use) {
5197                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5198                                    freq);
5199                         res = -2;
5200                         goto exit_free;
5201                 }
5202                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5203                            "requested channel (%u MHz)", freq);
5204                 *force_freq = freq;
5205                 goto exit_ok;
5206         }
5207
5208         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5209
5210         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5211                 enum wpa_driver_if_type iface_type;
5212
5213                 if (go)
5214                         iface_type = WPA_IF_P2P_GO;
5215                 else
5216                         iface_type = WPA_IF_P2P_CLIENT;
5217
5218                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5219                            best_freq, go);
5220
5221                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5222                                                  &max_pref_freq,
5223                                                  pref_freq_list);
5224                 if (!res && max_pref_freq > 0) {
5225                         *num_pref_freq = max_pref_freq;
5226                         i = 0;
5227                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5228                                                         pref_freq_list[i]) &&
5229                                i < *num_pref_freq) {
5230                                 wpa_printf(MSG_DEBUG,
5231                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5232                                            i, pref_freq_list[i]);
5233                                 i++;
5234                         }
5235                         if (i != *num_pref_freq) {
5236                                 best_freq = pref_freq_list[i];
5237                                 wpa_printf(MSG_DEBUG,
5238                                            "P2P: Using preferred_freq_list[%d]=%d",
5239                                            i, best_freq);
5240                         } else {
5241                                 wpa_printf(MSG_DEBUG,
5242                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5243                                 *num_pref_freq = 0;
5244                         }
5245                 } else {
5246                         wpa_printf(MSG_DEBUG,
5247                                    "P2P: No preferred frequency list available");
5248                 }
5249         }
5250
5251         /* We have a candidate frequency to use */
5252         if (best_freq > 0) {
5253                 if (*pref_freq == 0 && num_unused > 0) {
5254                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5255                                    best_freq);
5256                         *pref_freq = best_freq;
5257                 } else {
5258                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5259                                    best_freq);
5260                         *force_freq = best_freq;
5261                 }
5262         } else if (num_unused > 0) {
5263                 wpa_printf(MSG_DEBUG,
5264                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5265                 *force_freq = 0;
5266         } else {
5267                 wpa_printf(MSG_DEBUG,
5268                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5269                 res = -2;
5270                 goto exit_free;
5271         }
5272
5273 exit_ok:
5274         res = 0;
5275 exit_free:
5276         os_free(freqs);
5277         return res;
5278 }
5279
5280
5281 /**
5282  * wpas_p2p_connect - Request P2P Group Formation to be started
5283  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5284  * @peer_addr: Address of the peer P2P Device
5285  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5286  * @persistent_group: Whether to create a persistent group
5287  * @auto_join: Whether to select join vs. GO Negotiation automatically
5288  * @join: Whether to join an existing group (as a client) instead of starting
5289  *      Group Owner negotiation; @peer_addr is BSSID in that case
5290  * @auth: Whether to only authorize the connection instead of doing that and
5291  *      initiating Group Owner negotiation
5292  * @go_intent: GO Intent or -1 to use default
5293  * @freq: Frequency for the group or 0 for auto-selection
5294  * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5295  * @persistent_id: Persistent group credentials to use for forcing GO
5296  *      parameters or -1 to generate new values (SSID/passphrase)
5297  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5298  *      interoperability workaround when initiating group formation
5299  * @ht40: Start GO with 40 MHz channel width
5300  * @vht:  Start GO with VHT support
5301  * @vht_chwidth: Channel width supported by GO operating with VHT support
5302  *      (VHT_CHANWIDTH_*).
5303  * @group_ssid: Specific Group SSID for join or %NULL if not set
5304  * @group_ssid_len: Length of @group_ssid in octets
5305  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5306  *      failure, -2 on failure due to channel not currently available,
5307  *      -3 if forced channel is not supported
5308  */
5309 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5310                      const char *pin, enum p2p_wps_method wps_method,
5311                      int persistent_group, int auto_join, int join, int auth,
5312                      int go_intent, int freq, unsigned int vht_center_freq2,
5313                      int persistent_id, int pd, int ht40, int vht,
5314                      unsigned int vht_chwidth, const u8 *group_ssid,
5315                      size_t group_ssid_len)
5316 {
5317         int force_freq = 0, pref_freq = 0;
5318         int ret = 0, res;
5319         enum wpa_driver_if_type iftype;
5320         const u8 *if_addr;
5321         struct wpa_ssid *ssid = NULL;
5322         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5323
5324         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5325                 return -1;
5326
5327         if (persistent_id >= 0) {
5328                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5329                 if (ssid == NULL || ssid->disabled != 2 ||
5330                     ssid->mode != WPAS_MODE_P2P_GO)
5331                         return -1;
5332         }
5333
5334         os_free(wpa_s->global->add_psk);
5335         wpa_s->global->add_psk = NULL;
5336
5337         wpa_s->global->p2p_fail_on_wps_complete = 0;
5338         wpa_s->global->pending_p2ps_group = 0;
5339         wpa_s->global->pending_p2ps_group_freq = 0;
5340         wpa_s->p2ps_method_config_any = 0;
5341
5342         if (go_intent < 0)
5343                 go_intent = wpa_s->conf->p2p_go_intent;
5344
5345         if (!auth)
5346                 wpa_s->p2p_long_listen = 0;
5347
5348         wpa_s->p2p_wps_method = wps_method;
5349         wpa_s->p2p_persistent_group = !!persistent_group;
5350         wpa_s->p2p_persistent_id = persistent_id;
5351         wpa_s->p2p_go_intent = go_intent;
5352         wpa_s->p2p_connect_freq = freq;
5353         wpa_s->p2p_fallback_to_go_neg = 0;
5354         wpa_s->p2p_pd_before_go_neg = !!pd;
5355         wpa_s->p2p_go_ht40 = !!ht40;
5356         wpa_s->p2p_go_vht = !!vht;
5357         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5358         wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5359
5360         if (pin)
5361                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5362         else if (wps_method == WPS_PIN_DISPLAY) {
5363                 if (wps_generate_pin((unsigned int *) &ret) < 0)
5364                         return -1;
5365                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5366                                   "%08d", ret);
5367                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5368                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5369                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5370                            wpa_s->p2p_pin);
5371         } else
5372                 wpa_s->p2p_pin[0] = '\0';
5373
5374         if (join || auto_join) {
5375                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5376                 if (auth) {
5377                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5378                                    "connect a running group from " MACSTR,
5379                                    MAC2STR(peer_addr));
5380                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5381                         return ret;
5382                 }
5383                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5384                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5385                                            iface_addr) < 0) {
5386                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5387                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5388                                          dev_addr);
5389                 }
5390                 if (auto_join) {
5391                         os_get_reltime(&wpa_s->p2p_auto_started);
5392                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5393                                    "%ld.%06ld",
5394                                    wpa_s->p2p_auto_started.sec,
5395                                    wpa_s->p2p_auto_started.usec);
5396                 }
5397                 wpa_s->user_initiated_pd = 1;
5398                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5399                                   auto_join, freq,
5400                                   group_ssid, group_ssid_len) < 0)
5401                         return -1;
5402                 return ret;
5403         }
5404
5405         size = P2P_MAX_PREF_CHANNELS;
5406         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5407                                    go_intent == 15, pref_freq_list, &size);
5408         if (res)
5409                 return res;
5410         wpas_p2p_set_own_freq_preference(wpa_s,
5411                                          force_freq ? force_freq : pref_freq);
5412
5413         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5414
5415         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5416
5417         if (wpa_s->create_p2p_iface) {
5418                 /* Prepare to add a new interface for the group */
5419                 iftype = WPA_IF_P2P_GROUP;
5420                 if (go_intent == 15)
5421                         iftype = WPA_IF_P2P_GO;
5422                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5423                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5424                                    "interface for the group");
5425                         return -1;
5426                 }
5427
5428                 if_addr = wpa_s->pending_interface_addr;
5429         } else {
5430                 if (wpa_s->p2p_mgmt)
5431                         if_addr = wpa_s->parent->own_addr;
5432                 else
5433                         if_addr = wpa_s->own_addr;
5434                 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5435         }
5436
5437         if (auth) {
5438                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5439                                          go_intent, if_addr,
5440                                          force_freq, persistent_group, ssid,
5441                                          pref_freq) < 0)
5442                         return -1;
5443                 return ret;
5444         }
5445
5446         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5447                                   go_intent, if_addr, force_freq,
5448                                   persistent_group, ssid, pref_freq) < 0) {
5449                 if (wpa_s->create_p2p_iface)
5450                         wpas_p2p_remove_pending_group_interface(wpa_s);
5451                 return -1;
5452         }
5453         return ret;
5454 }
5455
5456
5457 /**
5458  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5459  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5460  * @freq: Frequency of the channel in MHz
5461  * @duration: Duration of the stay on the channel in milliseconds
5462  *
5463  * This callback is called when the driver indicates that it has started the
5464  * requested remain-on-channel duration.
5465  */
5466 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5467                                    unsigned int freq, unsigned int duration)
5468 {
5469         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5470                 return;
5471         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)",
5472                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5473                    wpa_s->roc_waiting_drv_freq, freq, duration);
5474         if (wpa_s->off_channel_freq &&
5475             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5476                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5477                               wpa_s->pending_listen_duration);
5478                 wpa_s->pending_listen_freq = 0;
5479         } else {
5480                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5481                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5482                            freq, duration);
5483         }
5484 }
5485
5486
5487 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5488 {
5489         /* Limit maximum Listen state time based on driver limitation. */
5490         if (timeout > wpa_s->max_remain_on_chan)
5491                 timeout = wpa_s->max_remain_on_chan;
5492
5493         return p2p_listen(wpa_s->global->p2p, timeout);
5494 }
5495
5496
5497 /**
5498  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5499  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5500  * @freq: Frequency of the channel in MHz
5501  *
5502  * This callback is called when the driver indicates that a remain-on-channel
5503  * operation has been completed, i.e., the duration on the requested channel
5504  * has timed out.
5505  */
5506 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5507                                           unsigned int freq)
5508 {
5509         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5510                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5511                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5512         wpas_p2p_listen_work_done(wpa_s);
5513         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5514                 return;
5515         if (wpa_s->p2p_long_listen > 0)
5516                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5517         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5518                 return; /* P2P module started a new operation */
5519         if (offchannel_pending_action_tx(wpa_s))
5520                 return;
5521         if (wpa_s->p2p_long_listen > 0) {
5522                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5523                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5524         } else {
5525                 /*
5526                  * When listen duration is over, stop listen & update p2p_state
5527                  * to IDLE.
5528                  */
5529                 p2p_stop_listen(wpa_s->global->p2p);
5530         }
5531 }
5532
5533
5534 /**
5535  * wpas_p2p_group_remove - Remove a P2P group
5536  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5537  * @ifname: Network interface name of the group interface or "*" to remove all
5538  *      groups
5539  * Returns: 0 on success, -1 on failure
5540  *
5541  * This function is used to remove a P2P group. This can be used to disconnect
5542  * from a group in which the local end is a P2P Client or to end a P2P Group in
5543  * case the local end is the Group Owner. If a virtual network interface was
5544  * created for this group, that interface will be removed. Otherwise, only the
5545  * configured P2P group network will be removed from the interface.
5546  */
5547 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5548 {
5549         struct wpa_global *global = wpa_s->global;
5550         struct wpa_supplicant *calling_wpa_s = wpa_s;
5551
5552         if (os_strcmp(ifname, "*") == 0) {
5553                 struct wpa_supplicant *prev;
5554                 wpa_s = global->ifaces;
5555                 while (wpa_s) {
5556                         prev = wpa_s;
5557                         wpa_s = wpa_s->next;
5558                         if (prev->p2p_group_interface !=
5559                             NOT_P2P_GROUP_INTERFACE ||
5560                             (prev->current_ssid &&
5561                              prev->current_ssid->p2p_group))
5562                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5563                 }
5564                 return 0;
5565         }
5566
5567         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5568                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5569                         break;
5570         }
5571
5572         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5573 }
5574
5575
5576 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5577 {
5578         unsigned int r;
5579
5580         if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5581                 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5582                 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5583                 int res;
5584
5585                 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5586                                                  &size, pref_freq_list);
5587                 if (!res && size > 0) {
5588                         i = 0;
5589                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5590                                                         pref_freq_list[i]) &&
5591                                i < size) {
5592                                 wpa_printf(MSG_DEBUG,
5593                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5594                                            i, pref_freq_list[i]);
5595                                 i++;
5596                         }
5597                         if (i != size) {
5598                                 freq = pref_freq_list[i];
5599                                 wpa_printf(MSG_DEBUG,
5600                                            "P2P: Using preferred_freq_list[%d]=%d",
5601                                            i, freq);
5602                         } else {
5603                                 wpa_printf(MSG_DEBUG,
5604                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5605                         }
5606                 } else {
5607                         wpa_printf(MSG_DEBUG,
5608                                    "P2P: No preferred frequency list available");
5609                 }
5610         }
5611
5612         if (freq == 2) {
5613                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5614                            "band");
5615                 if (wpa_s->best_24_freq > 0 &&
5616                     p2p_supported_freq_go(wpa_s->global->p2p,
5617                                           wpa_s->best_24_freq)) {
5618                         freq = wpa_s->best_24_freq;
5619                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5620                                    "channel: %d MHz", freq);
5621                 } else {
5622                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5623                                 return -1;
5624                         freq = 2412 + (r % 3) * 25;
5625                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5626                                    "channel: %d MHz", freq);
5627                 }
5628         }
5629
5630         if (freq == 5) {
5631                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5632                            "band");
5633                 if (wpa_s->best_5_freq > 0 &&
5634                     p2p_supported_freq_go(wpa_s->global->p2p,
5635                                        wpa_s->best_5_freq)) {
5636                         freq = wpa_s->best_5_freq;
5637                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5638                                    "channel: %d MHz", freq);
5639                 } else {
5640                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5641                                 return -1;
5642                         freq = 5180 + (r % 4) * 20;
5643                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5644                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5645                                            "5 GHz channel for P2P group");
5646                                 return -1;
5647                         }
5648                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5649                                    "channel: %d MHz", freq);
5650                 }
5651         }
5652
5653         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5654                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5655                     ieee80211_is_dfs(freq)) {
5656                         /*
5657                          * If freq is a DFS channel and DFS is offloaded to the
5658                          * driver, allow P2P GO to use it.
5659                          */
5660                         wpa_printf(MSG_DEBUG, "P2P: "
5661                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5662                                    __func__, freq);
5663                         return freq;
5664                 }
5665                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5666                            "(%u MHz) is not supported for P2P uses",
5667                            freq);
5668                 return -1;
5669         }
5670
5671         return freq;
5672 }
5673
5674
5675 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5676                                       const struct p2p_channels *channels,
5677                                       int freq)
5678 {
5679         if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5680             p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5681             freq_included(wpa_s, channels, freq))
5682                 return 1;
5683         return 0;
5684 }
5685
5686
5687 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5688                                             struct p2p_go_neg_results *params,
5689                                             const struct p2p_channels *channels)
5690 {
5691         unsigned int i, r;
5692
5693         /* first try some random selection of the social channels */
5694         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5695                 return;
5696
5697         for (i = 0; i < 3; i++) {
5698                 params->freq = 2412 + ((r + i) % 3) * 25;
5699                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5700                         goto out;
5701         }
5702
5703         /* try all other channels in operating class 81 */
5704         for (i = 0; i < 11; i++) {
5705                 params->freq = 2412 + i * 5;
5706
5707                 /* skip social channels; covered in the previous loop */
5708                 if (params->freq == 2412 ||
5709                     params->freq == 2437 ||
5710                     params->freq == 2462)
5711                         continue;
5712
5713                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5714                         goto out;
5715         }
5716
5717         /* try all channels in operating class 115 */
5718         for (i = 0; i < 4; i++) {
5719                 params->freq = 5180 + i * 20;
5720                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5721                     freq_included(wpa_s, channels, params->freq) &&
5722                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5723                         goto out;
5724         }
5725
5726         /* try all channels in operating class 124 */
5727         for (i = 0; i < 4; i++) {
5728                 params->freq = 5745 + i * 20;
5729                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5730                     freq_included(wpa_s, channels, params->freq) &&
5731                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5732                         goto out;
5733         }
5734
5735         /* try social channel class 180 channel 2 */
5736         params->freq = 58320 + 1 * 2160;
5737         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5738             freq_included(wpa_s, channels, params->freq) &&
5739             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5740                 goto out;
5741
5742         /* try all channels in reg. class 180 */
5743         for (i = 0; i < 4; i++) {
5744                 params->freq = 58320 + i * 2160;
5745                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5746                     freq_included(wpa_s, channels, params->freq) &&
5747                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5748                         goto out;
5749         }
5750
5751         params->freq = 0;
5752         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5753         return;
5754 out:
5755         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5756                    params->freq);
5757 }
5758
5759
5760 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5761                                    struct p2p_go_neg_results *params,
5762                                    int freq, int vht_center_freq2, int ht40,
5763                                    int vht, int max_oper_chwidth,
5764                                    const struct p2p_channels *channels)
5765 {
5766         struct wpa_used_freq_data *freqs;
5767         unsigned int cand;
5768         unsigned int num, i;
5769         int ignore_no_freqs = 0;
5770
5771         os_memset(params, 0, sizeof(*params));
5772         params->role_go = 1;
5773         params->ht40 = ht40;
5774         params->vht = vht;
5775         params->max_oper_chwidth = max_oper_chwidth;
5776         params->vht_center_freq2 = vht_center_freq2;
5777
5778         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5779                           sizeof(struct wpa_used_freq_data));
5780         if (!freqs)
5781                 return -1;
5782
5783         num = get_shared_radio_freqs_data(wpa_s, freqs,
5784                                           wpa_s->num_multichan_concurrent);
5785
5786         if (wpa_s->current_ssid &&
5787             wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5788             wpa_s->wpa_state == WPA_COMPLETED) {
5789                 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5790                            __func__);
5791
5792                 /*
5793                  * If the frequency selection is done for an active P2P GO that
5794                  * is not sharing a frequency, allow to select a new frequency
5795                  * even if there are no unused frequencies as we are about to
5796                  * move the P2P GO so its frequency can be re-used.
5797                  */
5798                 for (i = 0; i < num; i++) {
5799                         if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5800                             freqs[i].flags == 0) {
5801                                 ignore_no_freqs = 1;
5802                                 break;
5803                         }
5804                 }
5805         }
5806
5807         /* try using the forced freq */
5808         if (freq) {
5809                 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) {
5810                         wpa_printf(MSG_DEBUG,
5811                                    "P2P: Forced GO freq %d MHz not accepted",
5812                                    freq);
5813                         goto fail;
5814                 }
5815
5816                 for (i = 0; i < num; i++) {
5817                         if (freqs[i].freq == freq) {
5818                                 wpa_printf(MSG_DEBUG,
5819                                            "P2P: forced freq (%d MHz) is also shared",
5820                                            freq);
5821                                 params->freq = freq;
5822                                 goto success;
5823                         }
5824                 }
5825
5826                 if (!ignore_no_freqs &&
5827                     wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5828                         wpa_printf(MSG_DEBUG,
5829                                    "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5830                                    freq);
5831                         goto fail;
5832                 }
5833
5834                 wpa_printf(MSG_DEBUG,
5835                            "P2P: force GO freq (%d MHz) on a free channel",
5836                            freq);
5837                 params->freq = freq;
5838                 goto success;
5839         }
5840
5841         /* consider using one of the shared frequencies */
5842         if (num) {
5843                 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5844                 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5845                         wpa_printf(MSG_DEBUG,
5846                                    "P2P: Use shared freq (%d MHz) for GO",
5847                                    freq);
5848                         params->freq = cand;
5849                         goto success;
5850                 }
5851
5852                 /* try using one of the shared freqs */
5853                 for (i = 0; i < num; i++) {
5854                         if (wpas_p2p_supported_freq_go(wpa_s, channels,
5855                                                        freqs[i].freq)) {
5856                                 wpa_printf(MSG_DEBUG,
5857                                            "P2P: Use shared freq (%d MHz) for GO",
5858                                            freq);
5859                                 params->freq = freqs[i].freq;
5860                                 goto success;
5861                         }
5862                 }
5863         }
5864
5865         if (!ignore_no_freqs &&
5866             wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5867                 wpa_printf(MSG_DEBUG,
5868                            "P2P: Cannot force GO on any of the channels we are already using");
5869                 goto fail;
5870         }
5871
5872         /* try using the setting from the configuration file */
5873         if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5874             wpa_s->conf->p2p_oper_channel >= 1 &&
5875             wpa_s->conf->p2p_oper_channel <= 11 &&
5876             wpas_p2p_supported_freq_go(
5877                     wpa_s, channels,
5878                     2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5879                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5880                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5881                            "frequency %d MHz", params->freq);
5882                 goto success;
5883         }
5884
5885         if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5886              wpa_s->conf->p2p_oper_reg_class == 116 ||
5887              wpa_s->conf->p2p_oper_reg_class == 117 ||
5888              wpa_s->conf->p2p_oper_reg_class == 124 ||
5889              wpa_s->conf->p2p_oper_reg_class == 125 ||
5890              wpa_s->conf->p2p_oper_reg_class == 126 ||
5891              wpa_s->conf->p2p_oper_reg_class == 127) &&
5892             wpas_p2p_supported_freq_go(wpa_s, channels,
5893                                        5000 +
5894                                        5 * wpa_s->conf->p2p_oper_channel)) {
5895                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5896                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5897                            "frequency %d MHz", params->freq);
5898                 goto success;
5899         }
5900
5901         /* Try using best channels */
5902         if (wpa_s->conf->p2p_oper_channel == 0 &&
5903             wpa_s->best_overall_freq > 0 &&
5904             wpas_p2p_supported_freq_go(wpa_s, channels,
5905                                        wpa_s->best_overall_freq)) {
5906                 params->freq = wpa_s->best_overall_freq;
5907                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5908                            "channel %d MHz", params->freq);
5909                 goto success;
5910         }
5911
5912         if (wpa_s->conf->p2p_oper_channel == 0 &&
5913             wpa_s->best_24_freq > 0 &&
5914             wpas_p2p_supported_freq_go(wpa_s, channels,
5915                                        wpa_s->best_24_freq)) {
5916                 params->freq = wpa_s->best_24_freq;
5917                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5918                            "channel %d MHz", params->freq);
5919                 goto success;
5920         }
5921
5922         if (wpa_s->conf->p2p_oper_channel == 0 &&
5923             wpa_s->best_5_freq > 0 &&
5924             wpas_p2p_supported_freq_go(wpa_s, channels,
5925                                        wpa_s->best_5_freq)) {
5926                 params->freq = wpa_s->best_5_freq;
5927                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5928                            "channel %d MHz", params->freq);
5929                 goto success;
5930         }
5931
5932         /* try using preferred channels */
5933         cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
5934         if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5935                 params->freq = cand;
5936                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5937                            "channels", params->freq);
5938                 goto success;
5939         }
5940
5941         /* Try using one of the group common freqs */
5942         if (wpa_s->p2p_group_common_freqs) {
5943                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
5944                         cand = wpa_s->p2p_group_common_freqs[i];
5945                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5946                                 params->freq = cand;
5947                                 wpa_printf(MSG_DEBUG,
5948                                            "P2P: Use freq %d MHz common with the peer",
5949                                            params->freq);
5950                                 goto success;
5951                         }
5952                 }
5953         }
5954
5955         /* no preference, select some channel */
5956         wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
5957
5958         if (params->freq == 0) {
5959                 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
5960                 goto fail;
5961         }
5962
5963 success:
5964         os_free(freqs);
5965         return 0;
5966 fail:
5967         os_free(freqs);
5968         return -1;
5969 }
5970
5971
5972 static struct wpa_supplicant *
5973 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5974                          int go)
5975 {
5976         struct wpa_supplicant *group_wpa_s;
5977
5978         if (!wpas_p2p_create_iface(wpa_s)) {
5979                 if (wpa_s->p2p_mgmt) {
5980                         /*
5981                          * We may be called on the p2p_dev interface which
5982                          * cannot be used for group operations, so always use
5983                          * the primary interface.
5984                          */
5985                         wpa_s->parent->p2pdev = wpa_s;
5986                         wpa_s = wpa_s->parent;
5987                 }
5988                 wpa_dbg(wpa_s, MSG_DEBUG,
5989                         "P2P: Use primary interface for group operations");
5990                 wpa_s->p2p_first_connection_timeout = 0;
5991                 if (wpa_s != wpa_s->p2pdev)
5992                         wpas_p2p_clone_config_dh(wpa_s, wpa_s->p2pdev);
5993                 return wpa_s;
5994         }
5995
5996         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5997                                          WPA_IF_P2P_CLIENT) < 0) {
5998                 wpa_msg_global(wpa_s, MSG_ERROR,
5999                                "P2P: Failed to add group interface");
6000                 return NULL;
6001         }
6002         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
6003         if (group_wpa_s == NULL) {
6004                 wpa_msg_global(wpa_s, MSG_ERROR,
6005                                "P2P: Failed to initialize group interface");
6006                 wpas_p2p_remove_pending_group_interface(wpa_s);
6007                 return NULL;
6008         }
6009
6010         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
6011                 group_wpa_s->ifname);
6012         group_wpa_s->p2p_first_connection_timeout = 0;
6013         return group_wpa_s;
6014 }
6015
6016
6017 /**
6018  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
6019  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
6020  * @persistent_group: Whether to create a persistent group
6021  * @freq: Frequency for the group or 0 to indicate no hardcoding
6022  * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80
6023  * @ht40: Start GO with 40 MHz channel width
6024  * @vht:  Start GO with VHT support
6025  * @vht_chwidth: channel bandwidth for GO operating with VHT support
6026  * Returns: 0 on success, -1 on failure
6027  *
6028  * This function creates a new P2P group with the local end as the Group Owner,
6029  * i.e., without using Group Owner Negotiation.
6030  */
6031 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
6032                        int freq, int vht_center_freq2, int ht40, int vht,
6033                        int max_oper_chwidth)
6034 {
6035         struct p2p_go_neg_results params;
6036
6037         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6038                 return -1;
6039
6040         os_free(wpa_s->global->add_psk);
6041         wpa_s->global->add_psk = NULL;
6042
6043         /* Make sure we are not running find during connection establishment */
6044         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6045         wpas_p2p_stop_find_oper(wpa_s);
6046
6047         freq = wpas_p2p_select_go_freq(wpa_s, freq);
6048         if (freq < 0)
6049                 return -1;
6050
6051         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6052                                     ht40, vht, max_oper_chwidth, NULL))
6053                 return -1;
6054         if (params.freq &&
6055             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
6056                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
6057                     ieee80211_is_dfs(params.freq)) {
6058                         /*
6059                          * If freq is a DFS channel and DFS is offloaded to the
6060                          * driver, allow P2P GO to use it.
6061                          */
6062                         wpa_printf(MSG_DEBUG,
6063                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
6064                                 __func__, params.freq);
6065                 } else {
6066                         wpa_printf(MSG_DEBUG,
6067                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
6068                                    params.freq);
6069                         return -1;
6070                 }
6071         }
6072         p2p_go_params(wpa_s->global->p2p, &params);
6073         params.persistent_group = persistent_group;
6074
6075         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6076         if (wpa_s == NULL)
6077                 return -1;
6078         wpas_start_wps_go(wpa_s, &params, 0);
6079
6080         return 0;
6081 }
6082
6083
6084 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6085                                  struct wpa_ssid *params, int addr_allocated,
6086                                  int freq, int force_scan)
6087 {
6088         struct wpa_ssid *ssid;
6089
6090         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6091         if (wpa_s == NULL)
6092                 return -1;
6093         if (force_scan)
6094                 os_get_reltime(&wpa_s->scan_min_time);
6095         wpa_s->p2p_last_4way_hs_fail = NULL;
6096
6097         wpa_supplicant_ap_deinit(wpa_s);
6098
6099         ssid = wpa_config_add_network(wpa_s->conf);
6100         if (ssid == NULL)
6101                 return -1;
6102         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
6103         wpa_config_set_network_defaults(ssid);
6104         ssid->temporary = 1;
6105         ssid->proto = WPA_PROTO_RSN;
6106         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
6107         ssid->group_cipher = WPA_CIPHER_CCMP;
6108         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6109         ssid->ssid = os_malloc(params->ssid_len);
6110         if (ssid->ssid == NULL) {
6111                 wpa_config_remove_network(wpa_s->conf, ssid->id);
6112                 return -1;
6113         }
6114         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6115         ssid->ssid_len = params->ssid_len;
6116         ssid->p2p_group = 1;
6117         ssid->export_keys = 1;
6118         if (params->psk_set) {
6119                 os_memcpy(ssid->psk, params->psk, 32);
6120                 ssid->psk_set = 1;
6121         }
6122         if (params->passphrase)
6123                 ssid->passphrase = os_strdup(params->passphrase);
6124
6125         wpa_s->show_group_started = 1;
6126         wpa_s->p2p_in_invitation = 1;
6127         wpa_s->p2p_invite_go_freq = freq;
6128         wpa_s->p2p_go_group_formation_completed = 0;
6129         wpa_s->global->p2p_group_formation = wpa_s;
6130
6131         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6132                              NULL);
6133         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6134                                wpas_p2p_group_formation_timeout,
6135                                wpa_s->p2pdev, NULL);
6136         wpa_supplicant_select_network(wpa_s, ssid);
6137
6138         return 0;
6139 }
6140
6141
6142 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6143                                   struct wpa_ssid *ssid, int addr_allocated,
6144                                   int force_freq, int neg_freq,
6145                                   int vht_center_freq2, int ht40,
6146                                   int vht, int max_oper_chwidth,
6147                                   const struct p2p_channels *channels,
6148                                   int connection_timeout, int force_scan)
6149 {
6150         struct p2p_go_neg_results params;
6151         int go = 0, freq;
6152
6153         if (ssid->disabled != 2 || ssid->ssid == NULL)
6154                 return -1;
6155
6156         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6157             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6158                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6159                            "already running");
6160                 if (go == 0 &&
6161                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6162                                          wpa_s->p2pdev, NULL)) {
6163                         /*
6164                          * This can happen if Invitation Response frame was lost
6165                          * and the peer (GO of a persistent group) tries to
6166                          * invite us again. Reschedule the timeout to avoid
6167                          * terminating the wait for the connection too early
6168                          * since we now know that the peer is still trying to
6169                          * invite us instead of having already started the GO.
6170                          */
6171                         wpa_printf(MSG_DEBUG,
6172                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6173                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6174                                                wpas_p2p_group_formation_timeout,
6175                                                wpa_s->p2pdev, NULL);
6176                 }
6177                 return 0;
6178         }
6179
6180         os_free(wpa_s->global->add_psk);
6181         wpa_s->global->add_psk = NULL;
6182
6183         /* Make sure we are not running find during connection establishment */
6184         wpas_p2p_stop_find_oper(wpa_s);
6185
6186         wpa_s->p2p_fallback_to_go_neg = 0;
6187
6188         if (ssid->mode == WPAS_MODE_P2P_GO) {
6189                 if (force_freq > 0) {
6190                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6191                         if (freq < 0)
6192                                 return -1;
6193                 } else {
6194                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6195                         if (freq < 0 ||
6196                             (freq > 0 && !freq_included(wpa_s, channels, freq)))
6197                                 freq = 0;
6198                 }
6199         } else if (ssid->mode == WPAS_MODE_INFRA) {
6200                 freq = neg_freq;
6201                 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6202                         struct os_reltime now;
6203                         struct wpa_bss *bss =
6204                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6205
6206                         os_get_reltime(&now);
6207                         if (bss &&
6208                             !os_reltime_expired(&now, &bss->last_update, 5) &&
6209                             freq_included(wpa_s, channels, bss->freq))
6210                                 freq = bss->freq;
6211                         else
6212                                 freq = 0;
6213                 }
6214
6215                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6216                                              force_scan);
6217         } else {
6218                 return -1;
6219         }
6220
6221         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6222                                     ht40, vht, max_oper_chwidth, channels))
6223                 return -1;
6224
6225         params.role_go = 1;
6226         params.psk_set = ssid->psk_set;
6227         if (params.psk_set)
6228                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6229         if (ssid->passphrase) {
6230                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6231                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6232                                    "persistent group");
6233                         return -1;
6234                 }
6235                 os_strlcpy(params.passphrase, ssid->passphrase,
6236                            sizeof(params.passphrase));
6237         }
6238         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6239         params.ssid_len = ssid->ssid_len;
6240         params.persistent_group = 1;
6241
6242         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6243         if (wpa_s == NULL)
6244                 return -1;
6245
6246         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6247
6248         wpa_s->p2p_first_connection_timeout = connection_timeout;
6249         wpas_start_wps_go(wpa_s, &params, 0);
6250
6251         return 0;
6252 }
6253
6254
6255 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6256                                struct wpabuf *proberesp_ies)
6257 {
6258         struct wpa_supplicant *wpa_s = ctx;
6259         if (wpa_s->ap_iface) {
6260                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6261                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6262                         wpabuf_free(beacon_ies);
6263                         wpabuf_free(proberesp_ies);
6264                         return;
6265                 }
6266                 if (beacon_ies) {
6267                         wpabuf_free(hapd->p2p_beacon_ie);
6268                         hapd->p2p_beacon_ie = beacon_ies;
6269                 }
6270                 wpabuf_free(hapd->p2p_probe_resp_ie);
6271                 hapd->p2p_probe_resp_ie = proberesp_ies;
6272         } else {
6273                 wpabuf_free(beacon_ies);
6274                 wpabuf_free(proberesp_ies);
6275         }
6276         wpa_supplicant_ap_update_beacon(wpa_s);
6277 }
6278
6279
6280 static void wpas_p2p_idle_update(void *ctx, int idle)
6281 {
6282         struct wpa_supplicant *wpa_s = ctx;
6283         if (!wpa_s->ap_iface)
6284                 return;
6285         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6286         if (idle) {
6287                 if (wpa_s->global->p2p_fail_on_wps_complete &&
6288                     wpa_s->p2p_in_provisioning) {
6289                         wpas_p2p_grpform_fail_after_wps(wpa_s);
6290                         return;
6291                 }
6292                 wpas_p2p_set_group_idle_timeout(wpa_s);
6293         } else
6294                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6295 }
6296
6297
6298 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6299                                        struct wpa_ssid *ssid)
6300 {
6301         struct p2p_group *group;
6302         struct p2p_group_config *cfg;
6303
6304         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6305                 return NULL;
6306
6307         cfg = os_zalloc(sizeof(*cfg));
6308         if (cfg == NULL)
6309                 return NULL;
6310
6311         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6312                 cfg->persistent_group = 2;
6313         else if (ssid->p2p_persistent_group)
6314                 cfg->persistent_group = 1;
6315         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6316         if (wpa_s->max_stations &&
6317             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6318                 cfg->max_clients = wpa_s->max_stations;
6319         else
6320                 cfg->max_clients = wpa_s->conf->max_num_sta;
6321         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6322         cfg->ssid_len = ssid->ssid_len;
6323         cfg->freq = ssid->frequency;
6324         cfg->cb_ctx = wpa_s;
6325         cfg->ie_update = wpas_p2p_ie_update;
6326         cfg->idle_update = wpas_p2p_idle_update;
6327
6328         group = p2p_group_init(wpa_s->global->p2p, cfg);
6329         if (group == NULL)
6330                 os_free(cfg);
6331         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6332                 p2p_group_notif_formation_done(group);
6333         wpa_s->p2p_group = group;
6334         return group;
6335 }
6336
6337
6338 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6339                           int registrar)
6340 {
6341         struct wpa_ssid *ssid = wpa_s->current_ssid;
6342
6343         if (!wpa_s->p2p_in_provisioning) {
6344                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6345                            "provisioning not in progress");
6346                 return;
6347         }
6348
6349         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6350                 u8 go_dev_addr[ETH_ALEN];
6351                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6352                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6353                                           ssid->ssid_len);
6354                 /* Clear any stored provisioning info */
6355                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6356         }
6357
6358         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6359                              NULL);
6360         wpa_s->p2p_go_group_formation_completed = 1;
6361         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6362                 /*
6363                  * Use a separate timeout for initial data connection to
6364                  * complete to allow the group to be removed automatically if
6365                  * something goes wrong in this step before the P2P group idle
6366                  * timeout mechanism is taken into use.
6367                  */
6368                 wpa_dbg(wpa_s, MSG_DEBUG,
6369                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6370                         P2P_MAX_INITIAL_CONN_WAIT);
6371                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6372                                        wpas_p2p_group_formation_timeout,
6373                                        wpa_s->p2pdev, NULL);
6374                 /* Complete group formation on successful data connection. */
6375                 wpa_s->p2p_go_group_formation_completed = 0;
6376         } else if (ssid) {
6377                 /*
6378                  * Use a separate timeout for initial data connection to
6379                  * complete to allow the group to be removed automatically if
6380                  * the client does not complete data connection successfully.
6381                  */
6382                 wpa_dbg(wpa_s, MSG_DEBUG,
6383                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6384                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6385                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6386                                        wpas_p2p_group_formation_timeout,
6387                                        wpa_s->p2pdev, NULL);
6388                 /*
6389                  * Complete group formation on first successful data connection
6390                  */
6391                 wpa_s->p2p_go_group_formation_completed = 0;
6392         }
6393         if (wpa_s->global->p2p)
6394                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6395         wpas_group_formation_completed(wpa_s, 1, 0);
6396 }
6397
6398
6399 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6400                          struct wps_event_fail *fail)
6401 {
6402         if (!wpa_s->p2p_in_provisioning) {
6403                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6404                            "provisioning not in progress");
6405                 return;
6406         }
6407
6408         if (wpa_s->go_params) {
6409                 p2p_clear_provisioning_info(
6410                         wpa_s->global->p2p,
6411                         wpa_s->go_params->peer_device_addr);
6412         }
6413
6414         wpas_notify_p2p_wps_failed(wpa_s, fail);
6415
6416         if (wpa_s == wpa_s->global->p2p_group_formation) {
6417                 /*
6418                  * Allow some time for the failed WPS negotiation exchange to
6419                  * complete, but remove the group since group formation cannot
6420                  * succeed after provisioning failure.
6421                  */
6422                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6423                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6424                 eloop_deplete_timeout(0, 50000,
6425                                       wpas_p2p_group_formation_timeout,
6426                                       wpa_s->p2pdev, NULL);
6427         }
6428 }
6429
6430
6431 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6432 {
6433         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6434             !wpa_s->p2p_in_provisioning)
6435                 return 0;
6436
6437         wpas_p2p_grpform_fail_after_wps(wpa_s);
6438
6439         return 1;
6440 }
6441
6442
6443 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6444                        const char *config_method,
6445                        enum wpas_p2p_prov_disc_use use,
6446                        struct p2ps_provision *p2ps_prov)
6447 {
6448         u16 config_methods;
6449
6450         wpa_s->global->pending_p2ps_group = 0;
6451         wpa_s->global->pending_p2ps_group_freq = 0;
6452         wpa_s->p2p_fallback_to_go_neg = 0;
6453         wpa_s->pending_pd_use = NORMAL_PD;
6454         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6455                 p2ps_prov->conncap = p2ps_group_capability(
6456                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6457                         &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6458
6459                 wpa_printf(MSG_DEBUG,
6460                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6461                            __func__, p2ps_prov->conncap,
6462                            p2ps_prov->adv_id, p2ps_prov->conncap,
6463                            p2ps_prov->status, p2ps_prov->info);
6464
6465                 config_methods = 0;
6466         } else if (os_strncmp(config_method, "display", 7) == 0)
6467                 config_methods = WPS_CONFIG_DISPLAY;
6468         else if (os_strncmp(config_method, "keypad", 6) == 0)
6469                 config_methods = WPS_CONFIG_KEYPAD;
6470         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6471                  os_strncmp(config_method, "pushbutton", 10) == 0)
6472                 config_methods = WPS_CONFIG_PUSHBUTTON;
6473         else {
6474                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6475                 os_free(p2ps_prov);
6476                 return -1;
6477         }
6478
6479         if (use == WPAS_P2P_PD_AUTO) {
6480                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6481                 wpa_s->pending_pd_config_methods = config_methods;
6482                 wpa_s->p2p_auto_pd = 1;
6483                 wpa_s->p2p_auto_join = 0;
6484                 wpa_s->pending_pd_before_join = 0;
6485                 wpa_s->auto_pd_scan_retry = 0;
6486                 wpas_p2p_stop_find(wpa_s);
6487                 wpa_s->p2p_join_scan_count = 0;
6488                 os_get_reltime(&wpa_s->p2p_auto_started);
6489                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6490                            wpa_s->p2p_auto_started.sec,
6491                            wpa_s->p2p_auto_started.usec);
6492                 wpas_p2p_join_scan(wpa_s, NULL);
6493                 return 0;
6494         }
6495
6496         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6497                 os_free(p2ps_prov);
6498                 return -1;
6499         }
6500
6501         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6502                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6503                                  0, 1);
6504 }
6505
6506
6507 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6508                               char *end)
6509 {
6510         return p2p_scan_result_text(ies, ies_len, buf, end);
6511 }
6512
6513
6514 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6515 {
6516         if (!offchannel_pending_action_tx(wpa_s))
6517                 return;
6518
6519         if (wpa_s->p2p_send_action_work) {
6520                 wpas_p2p_free_send_action_work(wpa_s);
6521                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
6522                                      wpa_s, NULL);
6523                 offchannel_send_action_done(wpa_s);
6524         }
6525
6526         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6527                    "operation request");
6528         offchannel_clear_pending_action_tx(wpa_s);
6529 }
6530
6531
6532 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6533                   enum p2p_discovery_type type,
6534                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6535                   const u8 *dev_id, unsigned int search_delay,
6536                   u8 seek_cnt, const char **seek_string, int freq)
6537 {
6538         wpas_p2p_clear_pending_action_tx(wpa_s);
6539         wpa_s->p2p_long_listen = 0;
6540
6541         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6542             wpa_s->p2p_in_provisioning)
6543                 return -1;
6544
6545         wpa_supplicant_cancel_sched_scan(wpa_s);
6546
6547         return p2p_find(wpa_s->global->p2p, timeout, type,
6548                         num_req_dev_types, req_dev_types, dev_id,
6549                         search_delay, seek_cnt, seek_string, freq);
6550 }
6551
6552
6553 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6554                                             struct wpa_scan_results *scan_res)
6555 {
6556         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6557
6558         if (wpa_s->p2p_scan_work) {
6559                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6560                 wpa_s->p2p_scan_work = NULL;
6561                 radio_work_done(work);
6562         }
6563
6564         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6565                 return;
6566
6567         /*
6568          * Indicate that results have been processed so that the P2P module can
6569          * continue pending tasks.
6570          */
6571         p2p_scan_res_handled(wpa_s->global->p2p);
6572 }
6573
6574
6575 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6576 {
6577         wpas_p2p_clear_pending_action_tx(wpa_s);
6578         wpa_s->p2p_long_listen = 0;
6579         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6580         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6581
6582         if (wpa_s->global->p2p)
6583                 p2p_stop_find(wpa_s->global->p2p);
6584
6585         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6586                 wpa_printf(MSG_DEBUG,
6587                            "P2P: Do not consider the scan results after stop_find");
6588                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6589         }
6590 }
6591
6592
6593 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6594 {
6595         wpas_p2p_stop_find_oper(wpa_s);
6596         if (!wpa_s->global->pending_group_iface_for_p2ps)
6597                 wpas_p2p_remove_pending_group_interface(wpa_s);
6598 }
6599
6600
6601 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6602 {
6603         struct wpa_supplicant *wpa_s = eloop_ctx;
6604         wpa_s->p2p_long_listen = 0;
6605 }
6606
6607
6608 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6609 {
6610         int res;
6611
6612         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6613                 return -1;
6614
6615         wpa_supplicant_cancel_sched_scan(wpa_s);
6616         wpas_p2p_clear_pending_action_tx(wpa_s);
6617
6618         if (timeout == 0) {
6619                 /*
6620                  * This is a request for unlimited Listen state. However, at
6621                  * least for now, this is mapped to a Listen state for one
6622                  * hour.
6623                  */
6624                 timeout = 3600;
6625         }
6626         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6627         wpa_s->p2p_long_listen = 0;
6628
6629         /*
6630          * Stop previous find/listen operation to avoid trying to request a new
6631          * remain-on-channel operation while the driver is still running the
6632          * previous one.
6633          */
6634         if (wpa_s->global->p2p)
6635                 p2p_stop_find(wpa_s->global->p2p);
6636
6637         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6638         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6639                 wpa_s->p2p_long_listen = timeout * 1000;
6640                 eloop_register_timeout(timeout, 0,
6641                                        wpas_p2p_long_listen_timeout,
6642                                        wpa_s, NULL);
6643         }
6644
6645         return res;
6646 }
6647
6648
6649 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6650                           u8 *buf, size_t len, int p2p_group)
6651 {
6652         struct wpabuf *p2p_ie;
6653         int ret;
6654
6655         if (wpa_s->global->p2p_disabled)
6656                 return -1;
6657         /*
6658          * Advertize mandatory cross connection capability even on
6659          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6660          */
6661         if (wpa_s->conf->p2p_disabled && p2p_group)
6662                 return -1;
6663         if (wpa_s->global->p2p == NULL)
6664                 return -1;
6665         if (bss == NULL)
6666                 return -1;
6667
6668         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6669         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6670                                p2p_group, p2p_ie);
6671         wpabuf_free(p2p_ie);
6672
6673         return ret;
6674 }
6675
6676
6677 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6678                           const u8 *dst, const u8 *bssid,
6679                           const u8 *ie, size_t ie_len,
6680                           unsigned int rx_freq, int ssi_signal)
6681 {
6682         if (wpa_s->global->p2p_disabled)
6683                 return 0;
6684         if (wpa_s->global->p2p == NULL)
6685                 return 0;
6686
6687         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6688                                  ie, ie_len, rx_freq)) {
6689         case P2P_PREQ_NOT_P2P:
6690                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6691                                  ssi_signal);
6692                 /* fall through */
6693         case P2P_PREQ_MALFORMED:
6694         case P2P_PREQ_NOT_LISTEN:
6695         case P2P_PREQ_NOT_PROCESSED:
6696         default: /* make gcc happy */
6697                 return 0;
6698         case P2P_PREQ_PROCESSED:
6699                 return 1;
6700         }
6701 }
6702
6703
6704 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6705                         const u8 *sa, const u8 *bssid,
6706                         u8 category, const u8 *data, size_t len, int freq)
6707 {
6708         if (wpa_s->global->p2p_disabled)
6709                 return;
6710         if (wpa_s->global->p2p == NULL)
6711                 return;
6712
6713         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6714                       freq);
6715 }
6716
6717
6718 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6719 {
6720         unsigned int bands;
6721
6722         if (wpa_s->global->p2p_disabled)
6723                 return;
6724         if (wpa_s->global->p2p == NULL)
6725                 return;
6726
6727         bands = wpas_get_bands(wpa_s, NULL);
6728         p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
6729 }
6730
6731
6732 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6733 {
6734         p2p_group_deinit(wpa_s->p2p_group);
6735         wpa_s->p2p_group = NULL;
6736
6737         wpa_s->ap_configured_cb = NULL;
6738         wpa_s->ap_configured_cb_ctx = NULL;
6739         wpa_s->ap_configured_cb_data = NULL;
6740         wpa_s->connect_without_scan = NULL;
6741 }
6742
6743
6744 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6745 {
6746         wpa_s->p2p_long_listen = 0;
6747
6748         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6749                 return -1;
6750
6751         return p2p_reject(wpa_s->global->p2p, addr);
6752 }
6753
6754
6755 /* Invite to reinvoke a persistent group */
6756 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6757                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6758                     int vht_center_freq2, int ht40, int vht, int max_chwidth,
6759                     int pref_freq)
6760 {
6761         enum p2p_invite_role role;
6762         u8 *bssid = NULL;
6763         int force_freq = 0;
6764         int res;
6765         int no_pref_freq_given = pref_freq == 0;
6766         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6767
6768         wpa_s->global->p2p_invite_group = NULL;
6769         if (peer_addr)
6770                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6771         else
6772                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6773
6774         wpa_s->p2p_persistent_go_freq = freq;
6775         wpa_s->p2p_go_ht40 = !!ht40;
6776         wpa_s->p2p_go_vht = !!vht;
6777         wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
6778         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
6779         if (ssid->mode == WPAS_MODE_P2P_GO) {
6780                 role = P2P_INVITE_ROLE_GO;
6781                 if (peer_addr == NULL) {
6782                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6783                                    "address in invitation command");
6784                         return -1;
6785                 }
6786                 if (wpas_p2p_create_iface(wpa_s)) {
6787                         if (wpas_p2p_add_group_interface(wpa_s,
6788                                                          WPA_IF_P2P_GO) < 0) {
6789                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6790                                            "allocate a new interface for the "
6791                                            "group");
6792                                 return -1;
6793                         }
6794                         bssid = wpa_s->pending_interface_addr;
6795                 } else if (wpa_s->p2p_mgmt)
6796                         bssid = wpa_s->parent->own_addr;
6797                 else
6798                         bssid = wpa_s->own_addr;
6799         } else {
6800                 role = P2P_INVITE_ROLE_CLIENT;
6801                 peer_addr = ssid->bssid;
6802         }
6803         wpa_s->pending_invite_ssid_id = ssid->id;
6804
6805         size = P2P_MAX_PREF_CHANNELS;
6806         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6807                                    role == P2P_INVITE_ROLE_GO,
6808                                    pref_freq_list, &size);
6809         if (res)
6810                 return res;
6811
6812         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6813                 return -1;
6814
6815         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6816
6817         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6818             no_pref_freq_given && pref_freq > 0 &&
6819             wpa_s->num_multichan_concurrent > 1 &&
6820             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6821                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6822                            pref_freq);
6823                 pref_freq = 0;
6824         }
6825
6826         /*
6827          * Stop any find/listen operations before invitation and possibly
6828          * connection establishment.
6829          */
6830         wpas_p2p_stop_find_oper(wpa_s);
6831
6832         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6833                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6834                           1, pref_freq, -1);
6835 }
6836
6837
6838 /* Invite to join an active group */
6839 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6840                           const u8 *peer_addr, const u8 *go_dev_addr)
6841 {
6842         struct wpa_global *global = wpa_s->global;
6843         enum p2p_invite_role role;
6844         u8 *bssid = NULL;
6845         struct wpa_ssid *ssid;
6846         int persistent;
6847         int freq = 0, force_freq = 0, pref_freq = 0;
6848         int res;
6849         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6850
6851         wpa_s->p2p_persistent_go_freq = 0;
6852         wpa_s->p2p_go_ht40 = 0;
6853         wpa_s->p2p_go_vht = 0;
6854         wpa_s->p2p_go_vht_center_freq2 = 0;
6855         wpa_s->p2p_go_max_oper_chwidth = 0;
6856
6857         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6858                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6859                         break;
6860         }
6861         if (wpa_s == NULL) {
6862                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6863                 return -1;
6864         }
6865
6866         ssid = wpa_s->current_ssid;
6867         if (ssid == NULL) {
6868                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6869                            "invitation");
6870                 return -1;
6871         }
6872
6873         wpa_s->global->p2p_invite_group = wpa_s;
6874         persistent = ssid->p2p_persistent_group &&
6875                 wpas_p2p_get_persistent(wpa_s->p2pdev, peer_addr,
6876                                         ssid->ssid, ssid->ssid_len);
6877
6878         if (ssid->mode == WPAS_MODE_P2P_GO) {
6879                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6880                 bssid = wpa_s->own_addr;
6881                 if (go_dev_addr == NULL)
6882                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6883                 freq = ssid->frequency;
6884         } else {
6885                 role = P2P_INVITE_ROLE_CLIENT;
6886                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6887                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6888                                    "invite to current group");
6889                         return -1;
6890                 }
6891                 bssid = wpa_s->bssid;
6892                 if (go_dev_addr == NULL &&
6893                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6894                         go_dev_addr = wpa_s->go_dev_addr;
6895                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6896                         (int) wpa_s->assoc_freq;
6897         }
6898         wpa_s->p2pdev->pending_invite_ssid_id = -1;
6899
6900         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6901                 return -1;
6902
6903         size = P2P_MAX_PREF_CHANNELS;
6904         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6905                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
6906                                    pref_freq_list, &size);
6907         if (res)
6908                 return res;
6909         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6910
6911         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6912                           ssid->ssid, ssid->ssid_len, force_freq,
6913                           go_dev_addr, persistent, pref_freq, -1);
6914 }
6915
6916
6917 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6918 {
6919         struct wpa_ssid *ssid = wpa_s->current_ssid;
6920         u8 go_dev_addr[ETH_ALEN];
6921         int network_id = -1;
6922         int persistent;
6923         int freq;
6924         u8 ip[3 * 4];
6925         char ip_addr[100];
6926
6927         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6928                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6929                                      wpa_s->p2pdev, NULL);
6930         }
6931
6932         if (!wpa_s->show_group_started || !ssid)
6933                 return;
6934
6935         wpa_s->show_group_started = 0;
6936         if (!wpa_s->p2p_go_group_formation_completed &&
6937             wpa_s->global->p2p_group_formation == wpa_s) {
6938                 wpa_dbg(wpa_s, MSG_DEBUG,
6939                         "P2P: Marking group formation completed on client on data connection");
6940                 wpa_s->p2p_go_group_formation_completed = 1;
6941                 wpa_s->global->p2p_group_formation = NULL;
6942                 wpa_s->p2p_in_provisioning = 0;
6943                 wpa_s->p2p_in_invitation = 0;
6944         }
6945
6946         os_memset(go_dev_addr, 0, ETH_ALEN);
6947         if (ssid->bssid_set)
6948                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6949         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6950                                                ssid->ssid_len);
6951         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6952
6953         if (wpa_s->global->p2p_group_formation == wpa_s)
6954                 wpa_s->global->p2p_group_formation = NULL;
6955
6956         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6957                 (int) wpa_s->assoc_freq;
6958
6959         ip_addr[0] = '\0';
6960         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6961                 int res;
6962
6963                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6964                                   " ip_addr=%u.%u.%u.%u "
6965                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6966                                   ip[0], ip[1], ip[2], ip[3],
6967                                   ip[4], ip[5], ip[6], ip[7],
6968                                   ip[8], ip[9], ip[10], ip[11]);
6969                 if (os_snprintf_error(sizeof(ip_addr), res))
6970                         ip_addr[0] = '\0';
6971         }
6972
6973         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6974                                ssid->passphrase == NULL && ssid->psk_set ?
6975                                ssid->psk : NULL,
6976                                ssid->passphrase, go_dev_addr, persistent,
6977                                ip_addr);
6978
6979         if (persistent)
6980                 network_id = wpas_p2p_store_persistent_group(wpa_s->p2pdev,
6981                                                              ssid, go_dev_addr);
6982         if (network_id < 0)
6983                 network_id = ssid->id;
6984         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6985 }
6986
6987
6988 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6989                           u32 interval1, u32 duration2, u32 interval2)
6990 {
6991         int ret;
6992
6993         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6994                 return -1;
6995
6996         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6997             wpa_s->current_ssid == NULL ||
6998             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6999                 return -1;
7000
7001         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
7002                                wpa_s->own_addr, wpa_s->assoc_freq,
7003                                duration1, interval1, duration2, interval2);
7004         if (ret == 0)
7005                 wpa_s->waiting_presence_resp = 1;
7006
7007         return ret;
7008 }
7009
7010
7011 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
7012                         unsigned int interval)
7013 {
7014         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7015                 return -1;
7016
7017         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
7018 }
7019
7020
7021 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
7022 {
7023         if (wpa_s->current_ssid == NULL) {
7024                 /*
7025                  * current_ssid can be cleared when P2P client interface gets
7026                  * disconnected, so assume this interface was used as P2P
7027                  * client.
7028                  */
7029                 return 1;
7030         }
7031         return wpa_s->current_ssid->p2p_group &&
7032                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
7033 }
7034
7035
7036 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
7037 {
7038         struct wpa_supplicant *wpa_s = eloop_ctx;
7039
7040         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
7041                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
7042                            "disabled");
7043                 return;
7044         }
7045
7046         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
7047                    "group");
7048         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7049 }
7050
7051
7052 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7053 {
7054         int timeout;
7055
7056         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7057                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7058
7059         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7060                 return;
7061
7062         timeout = wpa_s->conf->p2p_group_idle;
7063         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7064             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7065             timeout = P2P_MAX_CLIENT_IDLE;
7066
7067         if (timeout == 0)
7068                 return;
7069
7070         if (timeout < 0) {
7071                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7072                         timeout = 0; /* special client mode no-timeout */
7073                 else
7074                         return;
7075         }
7076
7077         if (wpa_s->p2p_in_provisioning) {
7078                 /*
7079                  * Use the normal group formation timeout during the
7080                  * provisioning phase to avoid terminating this process too
7081                  * early due to group idle timeout.
7082                  */
7083                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7084                            "during provisioning");
7085                 return;
7086         }
7087
7088         if (wpa_s->show_group_started) {
7089                 /*
7090                  * Use the normal group formation timeout between the end of
7091                  * the provisioning phase and completion of 4-way handshake to
7092                  * avoid terminating this process too early due to group idle
7093                  * timeout.
7094                  */
7095                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7096                            "while waiting for initial 4-way handshake to "
7097                            "complete");
7098                 return;
7099         }
7100
7101         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7102                    timeout);
7103         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7104                                wpa_s, NULL);
7105 }
7106
7107
7108 /* Returns 1 if the interface was removed */
7109 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7110                           u16 reason_code, const u8 *ie, size_t ie_len,
7111                           int locally_generated)
7112 {
7113         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7114                 return 0;
7115
7116         if (!locally_generated)
7117                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7118                                  ie_len);
7119
7120         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7121             wpa_s->current_ssid &&
7122             wpa_s->current_ssid->p2p_group &&
7123             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7124                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7125                            "session is ending");
7126                 if (wpas_p2p_group_delete(wpa_s,
7127                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7128                     > 0)
7129                         return 1;
7130         }
7131
7132         return 0;
7133 }
7134
7135
7136 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7137                              u16 reason_code, const u8 *ie, size_t ie_len,
7138                              int locally_generated)
7139 {
7140         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7141                 return;
7142
7143         if (!locally_generated)
7144                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7145                                    ie_len);
7146 }
7147
7148
7149 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7150 {
7151         struct p2p_data *p2p = wpa_s->global->p2p;
7152
7153         if (p2p == NULL)
7154                 return;
7155
7156         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7157                 return;
7158
7159         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7160                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7161
7162         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7163                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7164
7165         if (wpa_s->wps &&
7166             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7167                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7168
7169         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7170                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7171
7172         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7173                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7174                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7175                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7176                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7177         }
7178
7179         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7180                 p2p_set_sec_dev_types(p2p,
7181                                       (void *) wpa_s->conf->sec_device_type,
7182                                       wpa_s->conf->num_sec_device_types);
7183
7184         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7185                 int i;
7186                 p2p_remove_wps_vendor_extensions(p2p);
7187                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7188                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7189                                 continue;
7190                         p2p_add_wps_vendor_extension(
7191                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
7192                 }
7193         }
7194
7195         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7196             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7197                 char country[3];
7198                 country[0] = wpa_s->conf->country[0];
7199                 country[1] = wpa_s->conf->country[1];
7200                 country[2] = 0x04;
7201                 p2p_set_country(p2p, country);
7202         }
7203
7204         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7205                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7206                                      wpa_s->conf->p2p_ssid_postfix ?
7207                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7208                                      0);
7209         }
7210
7211         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7212                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7213
7214         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7215                 u8 reg_class, channel;
7216                 int ret;
7217                 unsigned int r;
7218                 u8 channel_forced;
7219
7220                 if (wpa_s->conf->p2p_listen_reg_class &&
7221                     wpa_s->conf->p2p_listen_channel) {
7222                         reg_class = wpa_s->conf->p2p_listen_reg_class;
7223                         channel = wpa_s->conf->p2p_listen_channel;
7224                         channel_forced = 1;
7225                 } else {
7226                         reg_class = 81;
7227                         /*
7228                          * Pick one of the social channels randomly as the
7229                          * listen channel.
7230                          */
7231                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7232                                 channel = 1;
7233                         else
7234                                 channel = 1 + (r % 3) * 5;
7235                         channel_forced = 0;
7236                 }
7237                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7238                                              channel_forced);
7239                 if (ret)
7240                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7241                                    "failed: %d", ret);
7242         }
7243         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7244                 u8 op_reg_class, op_channel, cfg_op_channel;
7245                 int ret = 0;
7246                 unsigned int r;
7247                 if (wpa_s->conf->p2p_oper_reg_class &&
7248                     wpa_s->conf->p2p_oper_channel) {
7249                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7250                         op_channel = wpa_s->conf->p2p_oper_channel;
7251                         cfg_op_channel = 1;
7252                 } else {
7253                         op_reg_class = 81;
7254                         /*
7255                          * Use random operation channel from (1, 6, 11)
7256                          *if no other preference is indicated.
7257                          */
7258                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7259                                 op_channel = 1;
7260                         else
7261                                 op_channel = 1 + (r % 3) * 5;
7262                         cfg_op_channel = 0;
7263                 }
7264                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7265                                            cfg_op_channel);
7266                 if (ret)
7267                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7268                                    "failed: %d", ret);
7269         }
7270
7271         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7272                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7273                                       wpa_s->conf->p2p_pref_chan) < 0) {
7274                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7275                                    "update failed");
7276                 }
7277
7278                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7279                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7280                                    "update failed");
7281                 }
7282         }
7283
7284         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7285                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7286 }
7287
7288
7289 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7290                      int duration)
7291 {
7292         if (!wpa_s->ap_iface)
7293                 return -1;
7294         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7295                                    duration);
7296 }
7297
7298
7299 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7300 {
7301         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7302                 return -1;
7303
7304         wpa_s->global->cross_connection = enabled;
7305         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7306
7307         if (!enabled) {
7308                 struct wpa_supplicant *iface;
7309
7310                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7311                 {
7312                         if (iface->cross_connect_enabled == 0)
7313                                 continue;
7314
7315                         iface->cross_connect_enabled = 0;
7316                         iface->cross_connect_in_use = 0;
7317                         wpa_msg_global(iface->p2pdev, MSG_INFO,
7318                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7319                                        iface->ifname,
7320                                        iface->cross_connect_uplink);
7321                 }
7322         }
7323
7324         return 0;
7325 }
7326
7327
7328 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7329 {
7330         struct wpa_supplicant *iface;
7331
7332         if (!uplink->global->cross_connection)
7333                 return;
7334
7335         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7336                 if (!iface->cross_connect_enabled)
7337                         continue;
7338                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7339                     0)
7340                         continue;
7341                 if (iface->ap_iface == NULL)
7342                         continue;
7343                 if (iface->cross_connect_in_use)
7344                         continue;
7345
7346                 iface->cross_connect_in_use = 1;
7347                 wpa_msg_global(iface->p2pdev, MSG_INFO,
7348                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7349                                iface->ifname, iface->cross_connect_uplink);
7350         }
7351 }
7352
7353
7354 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7355 {
7356         struct wpa_supplicant *iface;
7357
7358         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7359                 if (!iface->cross_connect_enabled)
7360                         continue;
7361                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7362                     0)
7363                         continue;
7364                 if (!iface->cross_connect_in_use)
7365                         continue;
7366
7367                 wpa_msg_global(iface->p2pdev, MSG_INFO,
7368                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7369                                iface->ifname, iface->cross_connect_uplink);
7370                 iface->cross_connect_in_use = 0;
7371         }
7372 }
7373
7374
7375 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7376 {
7377         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7378             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7379             wpa_s->cross_connect_disallowed)
7380                 wpas_p2p_disable_cross_connect(wpa_s);
7381         else
7382                 wpas_p2p_enable_cross_connect(wpa_s);
7383         if (!wpa_s->ap_iface &&
7384             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7385                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7386 }
7387
7388
7389 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7390 {
7391         wpas_p2p_disable_cross_connect(wpa_s);
7392         if (!wpa_s->ap_iface &&
7393             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7394                                          wpa_s, NULL))
7395                 wpas_p2p_set_group_idle_timeout(wpa_s);
7396 }
7397
7398
7399 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7400 {
7401         struct wpa_supplicant *iface;
7402
7403         if (!wpa_s->global->cross_connection)
7404                 return;
7405
7406         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7407                 if (iface == wpa_s)
7408                         continue;
7409                 if (iface->drv_flags &
7410                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7411                         continue;
7412                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7413                     iface != wpa_s->parent)
7414                         continue;
7415
7416                 wpa_s->cross_connect_enabled = 1;
7417                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7418                            sizeof(wpa_s->cross_connect_uplink));
7419                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7420                            "%s to %s whenever uplink is available",
7421                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7422
7423                 if (iface->ap_iface || iface->current_ssid == NULL ||
7424                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7425                     iface->cross_connect_disallowed ||
7426                     iface->wpa_state != WPA_COMPLETED)
7427                         break;
7428
7429                 wpa_s->cross_connect_in_use = 1;
7430                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
7431                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7432                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7433                 break;
7434         }
7435 }
7436
7437
7438 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7439 {
7440         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7441             !wpa_s->p2p_in_provisioning)
7442                 return 0; /* not P2P client operation */
7443
7444         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7445                    "session overlap");
7446         if (wpa_s != wpa_s->p2pdev)
7447                 wpa_msg_ctrl(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_OVERLAP);
7448         wpas_p2p_group_formation_failed(wpa_s, 0);
7449         return 1;
7450 }
7451
7452
7453 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7454 {
7455         struct wpa_supplicant *wpa_s = eloop_ctx;
7456         wpas_p2p_notif_pbc_overlap(wpa_s);
7457 }
7458
7459
7460 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7461                                   enum wpas_p2p_channel_update_trig trig)
7462 {
7463         struct p2p_channels chan, cli_chan;
7464         struct wpa_used_freq_data *freqs = NULL;
7465         unsigned int num = wpa_s->num_multichan_concurrent;
7466
7467         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7468                 return;
7469
7470         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7471         if (!freqs)
7472                 return;
7473
7474         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7475
7476         os_memset(&chan, 0, sizeof(chan));
7477         os_memset(&cli_chan, 0, sizeof(cli_chan));
7478         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7479                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7480                            "channel list");
7481                 return;
7482         }
7483
7484         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7485
7486         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7487
7488         /*
7489          * The used frequencies map changed, so it is possible that a GO is
7490          * using a channel that is no longer valid for P2P use. It is also
7491          * possible that due to policy consideration, it would be preferable to
7492          * move it to a frequency already used by other station interfaces.
7493          */
7494         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7495
7496         os_free(freqs);
7497 }
7498
7499
7500 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7501                                      struct wpa_scan_results *scan_res)
7502 {
7503         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7504 }
7505
7506
7507 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7508 {
7509         struct wpa_global *global = wpa_s->global;
7510         int found = 0;
7511         const u8 *peer;
7512
7513         if (global->p2p == NULL)
7514                 return -1;
7515
7516         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7517
7518         if (wpa_s->pending_interface_name[0] &&
7519             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7520                 found = 1;
7521
7522         peer = p2p_get_go_neg_peer(global->p2p);
7523         if (peer) {
7524                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7525                            MACSTR, MAC2STR(peer));
7526                 p2p_unauthorize(global->p2p, peer);
7527                 found = 1;
7528         }
7529
7530         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7531                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7532                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7533                 found = 1;
7534         }
7535
7536         if (wpa_s->pending_pd_before_join) {
7537                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7538                 wpa_s->pending_pd_before_join = 0;
7539                 found = 1;
7540         }
7541
7542         wpas_p2p_stop_find(wpa_s);
7543
7544         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7545                 if (wpa_s == global->p2p_group_formation &&
7546                     (wpa_s->p2p_in_provisioning ||
7547                      wpa_s->parent->pending_interface_type ==
7548                      WPA_IF_P2P_CLIENT)) {
7549                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7550                                    "formation found - cancelling",
7551                                    wpa_s->ifname);
7552                         found = 1;
7553                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7554                                              wpa_s->p2pdev, NULL);
7555                         if (wpa_s->p2p_in_provisioning) {
7556                                 wpas_group_formation_completed(wpa_s, 0, 0);
7557                                 break;
7558                         }
7559                         wpas_p2p_group_delete(wpa_s,
7560                                               P2P_GROUP_REMOVAL_REQUESTED);
7561                         break;
7562                 } else if (wpa_s->p2p_in_invitation) {
7563                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7564                                    wpa_s->ifname);
7565                         found = 1;
7566                         wpas_p2p_group_formation_failed(wpa_s, 0);
7567                         break;
7568                 }
7569         }
7570
7571         if (!found) {
7572                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7573                 return -1;
7574         }
7575
7576         return 0;
7577 }
7578
7579
7580 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7581 {
7582         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7583                 return;
7584
7585         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7586                    "being available anymore");
7587         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7588 }
7589
7590
7591 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7592                                    int freq_24, int freq_5, int freq_overall)
7593 {
7594         struct p2p_data *p2p = wpa_s->global->p2p;
7595         if (p2p == NULL)
7596                 return;
7597         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7598 }
7599
7600
7601 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7602 {
7603         u8 peer[ETH_ALEN];
7604         struct p2p_data *p2p = wpa_s->global->p2p;
7605
7606         if (p2p == NULL)
7607                 return -1;
7608
7609         if (hwaddr_aton(addr, peer))
7610                 return -1;
7611
7612         return p2p_unauthorize(p2p, peer);
7613 }
7614
7615
7616 /**
7617  * wpas_p2p_disconnect - Disconnect from a P2P Group
7618  * @wpa_s: Pointer to wpa_supplicant data
7619  * Returns: 0 on success, -1 on failure
7620  *
7621  * This can be used to disconnect from a group in which the local end is a P2P
7622  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7623  * virtual network interface was created for this group, that interface will be
7624  * removed. Otherwise, only the configured P2P group network will be removed
7625  * from the interface.
7626  */
7627 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7628 {
7629
7630         if (wpa_s == NULL)
7631                 return -1;
7632
7633         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7634                 -1 : 0;
7635 }
7636
7637
7638 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7639 {
7640         int ret;
7641
7642         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7643                 return 0;
7644
7645         ret = p2p_in_progress(wpa_s->global->p2p);
7646         if (ret == 0) {
7647                 /*
7648                  * Check whether there is an ongoing WPS provisioning step (or
7649                  * other parts of group formation) on another interface since
7650                  * p2p_in_progress() does not report this to avoid issues for
7651                  * scans during such provisioning step.
7652                  */
7653                 if (wpa_s->global->p2p_group_formation &&
7654                     wpa_s->global->p2p_group_formation != wpa_s) {
7655                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7656                                 "in group formation",
7657                                 wpa_s->global->p2p_group_formation->ifname);
7658                         ret = 1;
7659                 }
7660         }
7661
7662         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7663                 struct os_reltime now;
7664                 os_get_reltime(&now);
7665                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7666                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7667                         /* Wait for the first client has expired */
7668                         wpa_s->global->p2p_go_wait_client.sec = 0;
7669                 } else {
7670                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7671                         ret = 1;
7672                 }
7673         }
7674
7675         return ret;
7676 }
7677
7678
7679 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7680                               struct wpa_ssid *ssid)
7681 {
7682         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7683             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7684                                  wpa_s->p2pdev, NULL) > 0) {
7685                 /**
7686                  * Remove the network by scheduling the group formation
7687                  * timeout to happen immediately. The teardown code
7688                  * needs to be scheduled to run asynch later so that we
7689                  * don't delete data from under ourselves unexpectedly.
7690                  * Calling wpas_p2p_group_formation_timeout directly
7691                  * causes a series of crashes in WPS failure scenarios.
7692                  */
7693                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7694                            "P2P group network getting removed");
7695                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7696                                        wpa_s->p2pdev, NULL);
7697         }
7698 }
7699
7700
7701 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7702                                           const u8 *addr, const u8 *ssid,
7703                                           size_t ssid_len)
7704 {
7705         struct wpa_ssid *s;
7706         size_t i;
7707
7708         for (s = wpa_s->conf->ssid; s; s = s->next) {
7709                 if (s->disabled != 2)
7710                         continue;
7711                 if (ssid &&
7712                     (ssid_len != s->ssid_len ||
7713                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7714                         continue;
7715                 if (addr == NULL) {
7716                         if (s->mode == WPAS_MODE_P2P_GO)
7717                                 return s;
7718                         continue;
7719                 }
7720                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7721                         return s; /* peer is GO in the persistent group */
7722                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7723                         continue;
7724                 for (i = 0; i < s->num_p2p_clients; i++) {
7725                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7726                                       addr, ETH_ALEN) == 0)
7727                                 return s; /* peer is P2P client in persistent
7728                                            * group */
7729                 }
7730         }
7731
7732         return NULL;
7733 }
7734
7735
7736 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7737                                        const u8 *addr)
7738 {
7739         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7740                                  wpa_s->p2pdev, NULL) > 0) {
7741                 /*
7742                  * This can happen if WPS provisioning step is not terminated
7743                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7744                  * peer was able to connect, there is no need to time out group
7745                  * formation after this, though. In addition, this is used with
7746                  * the initial connection wait on the GO as a separate formation
7747                  * timeout and as such, expected to be hit after the initial WPS
7748                  * provisioning step.
7749                  */
7750                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7751
7752                 if (!wpa_s->p2p_go_group_formation_completed &&
7753                     !wpa_s->group_formation_reported) {
7754                         /*
7755                          * GO has not yet notified group formation success since
7756                          * the WPS step was not completed cleanly. Do that
7757                          * notification now since the P2P Client was able to
7758                          * connect and as such, must have received the
7759                          * credential from the WPS step.
7760                          */
7761                         if (wpa_s->global->p2p)
7762                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7763                         wpas_group_formation_completed(wpa_s, 1, 0);
7764                 }
7765         }
7766         if (!wpa_s->p2p_go_group_formation_completed) {
7767                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7768                 wpa_s->p2p_go_group_formation_completed = 1;
7769                 wpa_s->global->p2p_group_formation = NULL;
7770                 wpa_s->p2p_in_provisioning = 0;
7771                 wpa_s->p2p_in_invitation = 0;
7772         }
7773         wpa_s->global->p2p_go_wait_client.sec = 0;
7774         if (addr == NULL)
7775                 return;
7776         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7777 }
7778
7779
7780 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7781                                        int group_added)
7782 {
7783         struct wpa_supplicant *group = wpa_s;
7784         int ret = 0;
7785
7786         if (wpa_s->global->p2p_group_formation)
7787                 group = wpa_s->global->p2p_group_formation;
7788         wpa_s = wpa_s->global->p2p_init_wpa_s;
7789         offchannel_send_action_done(wpa_s);
7790         if (group_added)
7791                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7792         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7793         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7794                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7795                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7796                          wpa_s->p2p_go_vht_center_freq2,
7797                          wpa_s->p2p_persistent_id,
7798                          wpa_s->p2p_pd_before_go_neg,
7799                          wpa_s->p2p_go_ht40,
7800                          wpa_s->p2p_go_vht,
7801                          wpa_s->p2p_go_max_oper_chwidth, NULL, 0);
7802         return ret;
7803 }
7804
7805
7806 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7807 {
7808         int res;
7809
7810         if (!wpa_s->p2p_fallback_to_go_neg ||
7811             wpa_s->p2p_in_provisioning <= 5)
7812                 return 0;
7813
7814         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7815                 return 0; /* peer operating as a GO */
7816
7817         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7818                 "fallback to GO Negotiation");
7819         wpa_msg_global(wpa_s->p2pdev, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7820                        "reason=GO-not-found");
7821         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7822
7823         return res == 1 ? 2 : 1;
7824 }
7825
7826
7827 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7828 {
7829         struct wpa_supplicant *ifs;
7830
7831         if (wpa_s->wpa_state > WPA_SCANNING) {
7832                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7833                         "concurrent operation",
7834                         wpa_s->conf->p2p_search_delay);
7835                 return wpa_s->conf->p2p_search_delay;
7836         }
7837
7838         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7839                          radio_list) {
7840                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7841                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7842                                 "delay due to concurrent operation on "
7843                                 "interface %s",
7844                                 wpa_s->conf->p2p_search_delay,
7845                                 ifs->ifname);
7846                         return wpa_s->conf->p2p_search_delay;
7847                 }
7848         }
7849
7850         return 0;
7851 }
7852
7853
7854 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7855                                      struct wpa_ssid *s, const u8 *addr,
7856                                      int iface_addr)
7857 {
7858         struct psk_list_entry *psk, *tmp;
7859         int changed = 0;
7860
7861         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7862                               list) {
7863                 if ((iface_addr && !psk->p2p &&
7864                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7865                     (!iface_addr && psk->p2p &&
7866                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7867                         wpa_dbg(wpa_s, MSG_DEBUG,
7868                                 "P2P: Remove persistent group PSK list entry for "
7869                                 MACSTR " p2p=%u",
7870                                 MAC2STR(psk->addr), psk->p2p);
7871                         dl_list_del(&psk->list);
7872                         os_free(psk);
7873                         changed++;
7874                 }
7875         }
7876
7877         return changed;
7878 }
7879
7880
7881 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7882                          const u8 *p2p_dev_addr,
7883                          const u8 *psk, size_t psk_len)
7884 {
7885         struct wpa_ssid *ssid = wpa_s->current_ssid;
7886         struct wpa_ssid *persistent;
7887         struct psk_list_entry *p, *last;
7888
7889         if (psk_len != sizeof(p->psk))
7890                 return;
7891
7892         if (p2p_dev_addr) {
7893                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7894                         " p2p_dev_addr=" MACSTR,
7895                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7896                 if (is_zero_ether_addr(p2p_dev_addr))
7897                         p2p_dev_addr = NULL;
7898         } else {
7899                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7900                         MAC2STR(mac_addr));
7901         }
7902
7903         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7904                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7905                 /* To be added to persistent group once created */
7906                 if (wpa_s->global->add_psk == NULL) {
7907                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7908                         if (wpa_s->global->add_psk == NULL)
7909                                 return;
7910                 }
7911                 p = wpa_s->global->add_psk;
7912                 if (p2p_dev_addr) {
7913                         p->p2p = 1;
7914                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7915                 } else {
7916                         p->p2p = 0;
7917                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7918                 }
7919                 os_memcpy(p->psk, psk, psk_len);
7920                 return;
7921         }
7922
7923         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7924                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7925                 return;
7926         }
7927
7928         persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
7929                                              ssid->ssid_len);
7930         if (!persistent) {
7931                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7932                 return;
7933         }
7934
7935         p = os_zalloc(sizeof(*p));
7936         if (p == NULL)
7937                 return;
7938         if (p2p_dev_addr) {
7939                 p->p2p = 1;
7940                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7941         } else {
7942                 p->p2p = 0;
7943                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7944         }
7945         os_memcpy(p->psk, psk, psk_len);
7946
7947         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7948             (last = dl_list_last(&persistent->psk_list,
7949                                  struct psk_list_entry, list))) {
7950                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7951                         MACSTR " (p2p=%u) to make room for a new one",
7952                         MAC2STR(last->addr), last->p2p);
7953                 dl_list_del(&last->list);
7954                 os_free(last);
7955         }
7956
7957         wpas_p2p_remove_psk_entry(wpa_s->p2pdev, persistent,
7958                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7959                                   p2p_dev_addr == NULL);
7960         if (p2p_dev_addr) {
7961                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7962                         MACSTR, MAC2STR(p2p_dev_addr));
7963         } else {
7964                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7965                         MAC2STR(mac_addr));
7966         }
7967         dl_list_add(&persistent->psk_list, &p->list);
7968
7969         if (wpa_s->p2pdev->conf->update_config &&
7970             wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
7971                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7972 }
7973
7974
7975 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7976                                 struct wpa_ssid *s, const u8 *addr,
7977                                 int iface_addr)
7978 {
7979         int res;
7980
7981         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7982         if (res > 0 && wpa_s->conf->update_config &&
7983             wpa_config_write(wpa_s->confname, wpa_s->conf))
7984                 wpa_dbg(wpa_s, MSG_DEBUG,
7985                         "P2P: Failed to update configuration");
7986 }
7987
7988
7989 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7990                                       const u8 *peer, int iface_addr)
7991 {
7992         struct hostapd_data *hapd;
7993         struct hostapd_wpa_psk *psk, *prev, *rem;
7994         struct sta_info *sta;
7995
7996         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7997             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7998                 return;
7999
8000         /* Remove per-station PSK entry */
8001         hapd = wpa_s->ap_iface->bss[0];
8002         prev = NULL;
8003         psk = hapd->conf->ssid.wpa_psk;
8004         while (psk) {
8005                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
8006                     (!iface_addr &&
8007                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
8008                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
8009                                 MACSTR " iface_addr=%d",
8010                                 MAC2STR(peer), iface_addr);
8011                         if (prev)
8012                                 prev->next = psk->next;
8013                         else
8014                                 hapd->conf->ssid.wpa_psk = psk->next;
8015                         rem = psk;
8016                         psk = psk->next;
8017                         os_free(rem);
8018                 } else {
8019                         prev = psk;
8020                         psk = psk->next;
8021                 }
8022         }
8023
8024         /* Disconnect from group */
8025         if (iface_addr)
8026                 sta = ap_get_sta(hapd, peer);
8027         else
8028                 sta = ap_get_sta_p2p(hapd, peer);
8029         if (sta) {
8030                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
8031                         " (iface_addr=%d) from group",
8032                         MAC2STR(peer), iface_addr);
8033                 hostapd_drv_sta_deauth(hapd, sta->addr,
8034                                        WLAN_REASON_DEAUTH_LEAVING);
8035                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
8036         }
8037 }
8038
8039
8040 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
8041                             int iface_addr)
8042 {
8043         struct wpa_ssid *s;
8044         struct wpa_supplicant *w;
8045         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
8046
8047         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
8048
8049         /* Remove from any persistent group */
8050         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
8051                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8052                         continue;
8053                 if (!iface_addr)
8054                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
8055                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
8056         }
8057
8058         /* Remove from any operating group */
8059         for (w = wpa_s->global->ifaces; w; w = w->next)
8060                 wpas_p2p_remove_client_go(w, peer, iface_addr);
8061 }
8062
8063
8064 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8065 {
8066         struct wpa_supplicant *wpa_s = eloop_ctx;
8067         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8068 }
8069
8070
8071 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8072 {
8073         struct wpa_supplicant *wpa_s = eloop_ctx;
8074
8075         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8076         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8077 }
8078
8079
8080 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8081                                         struct wpa_ssid *ssid)
8082 {
8083         struct wpa_supplicant *iface;
8084
8085         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8086                 if (!iface->current_ssid ||
8087                     iface->current_ssid->frequency == freq ||
8088                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8089                      !iface->current_ssid->p2p_group))
8090                         continue;
8091
8092                 /* Remove the connection with least priority */
8093                 if (!wpas_is_p2p_prioritized(iface)) {
8094                         /* STA connection has priority over existing
8095                          * P2P connection, so remove the interface. */
8096                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8097                         eloop_register_timeout(0, 0,
8098                                                wpas_p2p_group_freq_conflict,
8099                                                iface, NULL);
8100                         /* If connection in progress is P2P connection, do not
8101                          * proceed for the connection. */
8102                         if (wpa_s == iface)
8103                                 return -1;
8104                         else
8105                                 return 0;
8106                 } else {
8107                         /* P2P connection has priority, disable the STA network
8108                          */
8109                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
8110                                                        ssid);
8111                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8112                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8113                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8114                                   ETH_ALEN);
8115                         /* If P2P connection is in progress, continue
8116                          * connecting...*/
8117                         if (wpa_s == iface)
8118                                 return 0;
8119                         else
8120                                 return -1;
8121                 }
8122         }
8123
8124         return 0;
8125 }
8126
8127
8128 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8129 {
8130         struct wpa_ssid *ssid = wpa_s->current_ssid;
8131
8132         if (ssid == NULL || !ssid->p2p_group)
8133                 return 0;
8134
8135         if (wpa_s->p2p_last_4way_hs_fail &&
8136             wpa_s->p2p_last_4way_hs_fail == ssid) {
8137                 u8 go_dev_addr[ETH_ALEN];
8138                 struct wpa_ssid *persistent;
8139
8140                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8141                                               ssid->ssid,
8142                                               ssid->ssid_len) <= 0) {
8143                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8144                         goto disconnect;
8145                 }
8146
8147                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8148                         MACSTR, MAC2STR(go_dev_addr));
8149                 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, go_dev_addr,
8150                                                      ssid->ssid,
8151                                                      ssid->ssid_len);
8152                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8153                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8154                         goto disconnect;
8155                 }
8156                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
8157                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8158                                persistent->id);
8159         disconnect:
8160                 wpa_s->p2p_last_4way_hs_fail = NULL;
8161                 /*
8162                  * Remove the group from a timeout to avoid issues with caller
8163                  * continuing to use the interface if this is on a P2P group
8164                  * interface.
8165                  */
8166                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8167                                        wpa_s, NULL);
8168                 return 1;
8169         }
8170
8171         wpa_s->p2p_last_4way_hs_fail = ssid;
8172         return 0;
8173 }
8174
8175
8176 #ifdef CONFIG_WPS_NFC
8177
8178 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8179                                              struct wpabuf *p2p)
8180 {
8181         struct wpabuf *ret;
8182         size_t wsc_len;
8183
8184         if (p2p == NULL) {
8185                 wpabuf_free(wsc);
8186                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8187                 return NULL;
8188         }
8189
8190         wsc_len = wsc ? wpabuf_len(wsc) : 0;
8191         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8192         if (ret == NULL) {
8193                 wpabuf_free(wsc);
8194                 wpabuf_free(p2p);
8195                 return NULL;
8196         }
8197
8198         wpabuf_put_be16(ret, wsc_len);
8199         if (wsc)
8200                 wpabuf_put_buf(ret, wsc);
8201         wpabuf_put_be16(ret, wpabuf_len(p2p));
8202         wpabuf_put_buf(ret, p2p);
8203
8204         wpabuf_free(wsc);
8205         wpabuf_free(p2p);
8206         wpa_hexdump_buf(MSG_DEBUG,
8207                         "P2P: Generated NFC connection handover message", ret);
8208
8209         if (ndef && ret) {
8210                 struct wpabuf *tmp;
8211                 tmp = ndef_build_p2p(ret);
8212                 wpabuf_free(ret);
8213                 if (tmp == NULL) {
8214                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8215                         return NULL;
8216                 }
8217                 ret = tmp;
8218         }
8219
8220         return ret;
8221 }
8222
8223
8224 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8225                              struct wpa_ssid **ssid, u8 *go_dev_addr)
8226 {
8227         struct wpa_supplicant *iface;
8228
8229         if (go_dev_addr)
8230                 os_memset(go_dev_addr, 0, ETH_ALEN);
8231         if (ssid)
8232                 *ssid = NULL;
8233         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8234                 if (iface->wpa_state < WPA_ASSOCIATING ||
8235                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8236                     !iface->current_ssid->p2p_group ||
8237                     iface->current_ssid->mode != WPAS_MODE_INFRA)
8238                         continue;
8239                 if (ssid)
8240                         *ssid = iface->current_ssid;
8241                 if (go_dev_addr)
8242                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8243                 return iface->assoc_freq;
8244         }
8245         return 0;
8246 }
8247
8248
8249 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8250                                           int ndef)
8251 {
8252         struct wpabuf *wsc, *p2p;
8253         struct wpa_ssid *ssid;
8254         u8 go_dev_addr[ETH_ALEN];
8255         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8256
8257         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8258                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8259                 return NULL;
8260         }
8261
8262         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8263             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8264                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8265                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8266                 return NULL;
8267         }
8268
8269         if (cli_freq == 0) {
8270                 wsc = wps_build_nfc_handover_req_p2p(
8271                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8272         } else
8273                 wsc = NULL;
8274         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8275                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8276                                          ssid ? ssid->ssid_len : 0);
8277
8278         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8279 }
8280
8281
8282 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8283                                           int ndef, int tag)
8284 {
8285         struct wpabuf *wsc, *p2p;
8286         struct wpa_ssid *ssid;
8287         u8 go_dev_addr[ETH_ALEN];
8288         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8289
8290         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8291                 return NULL;
8292
8293         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8294             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8295                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8296                 return NULL;
8297
8298         if (cli_freq == 0) {
8299                 wsc = wps_build_nfc_handover_sel_p2p(
8300                         wpa_s->parent->wps,
8301                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8302                         DEV_PW_NFC_CONNECTION_HANDOVER,
8303                         wpa_s->conf->wps_nfc_dh_pubkey,
8304                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8305         } else
8306                 wsc = NULL;
8307         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8308                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8309                                          ssid ? ssid->ssid_len : 0);
8310
8311         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8312 }
8313
8314
8315 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8316                                    struct p2p_nfc_params *params)
8317 {
8318         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8319                    "connection handover (freq=%d)",
8320                    params->go_freq);
8321
8322         if (params->go_freq && params->go_ssid_len) {
8323                 wpa_s->p2p_wps_method = WPS_NFC;
8324                 wpa_s->pending_join_wps_method = WPS_NFC;
8325                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8326                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8327                           ETH_ALEN);
8328                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8329                                            params->go_ssid,
8330                                            params->go_ssid_len);
8331         }
8332
8333         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8334                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8335                                 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8336                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8337                                 params->go_ssid_len ? params->go_ssid : NULL,
8338                                 params->go_ssid_len);
8339 }
8340
8341
8342 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8343                                   struct p2p_nfc_params *params, int tag)
8344 {
8345         int res, persistent;
8346         struct wpa_ssid *ssid;
8347
8348         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8349                    "connection handover");
8350         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8351                 ssid = wpa_s->current_ssid;
8352                 if (ssid == NULL)
8353                         continue;
8354                 if (ssid->mode != WPAS_MODE_P2P_GO)
8355                         continue;
8356                 if (wpa_s->ap_iface == NULL)
8357                         continue;
8358                 break;
8359         }
8360         if (wpa_s == NULL) {
8361                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8362                 return -1;
8363         }
8364
8365         if (wpa_s->parent->p2p_oob_dev_pw_id !=
8366             DEV_PW_NFC_CONNECTION_HANDOVER &&
8367             !wpa_s->parent->p2p_oob_dev_pw) {
8368                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8369                 return -1;
8370         }
8371         res = wpas_ap_wps_add_nfc_pw(
8372                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
8373                 wpa_s->parent->p2p_oob_dev_pw,
8374                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
8375                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
8376         if (res)
8377                 return res;
8378
8379         if (!tag) {
8380                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8381                 return 0;
8382         }
8383
8384         if (!params->peer ||
8385             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8386                 return 0;
8387
8388         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8389                    " to join", MAC2STR(params->peer->p2p_device_addr));
8390
8391         wpa_s->global->p2p_invite_group = wpa_s;
8392         persistent = ssid->p2p_persistent_group &&
8393                 wpas_p2p_get_persistent(wpa_s->parent,
8394                                         params->peer->p2p_device_addr,
8395                                         ssid->ssid, ssid->ssid_len);
8396         wpa_s->parent->pending_invite_ssid_id = -1;
8397
8398         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8399                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8400                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8401                           wpa_s->global->p2p_dev_addr, persistent, 0,
8402                           wpa_s->parent->p2p_oob_dev_pw_id);
8403 }
8404
8405
8406 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8407                                     struct p2p_nfc_params *params,
8408                                     int forced_freq)
8409 {
8410         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8411                    "connection handover");
8412         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8413                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8414                                 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8415                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8416                                 NULL, 0);
8417 }
8418
8419
8420 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8421                                     struct p2p_nfc_params *params,
8422                                     int forced_freq)
8423 {
8424         int res;
8425
8426         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8427                    "connection handover");
8428         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8429                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8430                                forced_freq, wpa_s->p2p_go_vht_center_freq2,
8431                                -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8432                                NULL, 0);
8433         if (res)
8434                 return res;
8435
8436         res = wpas_p2p_listen(wpa_s, 60);
8437         if (res) {
8438                 p2p_unauthorize(wpa_s->global->p2p,
8439                                 params->peer->p2p_device_addr);
8440         }
8441
8442         return res;
8443 }
8444
8445
8446 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8447                                             const struct wpabuf *data,
8448                                             int sel, int tag, int forced_freq)
8449 {
8450         const u8 *pos, *end;
8451         u16 len, id;
8452         struct p2p_nfc_params params;
8453         int res;
8454
8455         os_memset(&params, 0, sizeof(params));
8456         params.sel = sel;
8457
8458         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8459
8460         pos = wpabuf_head(data);
8461         end = pos + wpabuf_len(data);
8462
8463         if (end - pos < 2) {
8464                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8465                            "attributes");
8466                 return -1;
8467         }
8468         len = WPA_GET_BE16(pos);
8469         pos += 2;
8470         if (len > end - pos) {
8471                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8472                            "attributes");
8473                 return -1;
8474         }
8475         params.wsc_attr = pos;
8476         params.wsc_len = len;
8477         pos += len;
8478
8479         if (end - pos < 2) {
8480                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8481                            "attributes");
8482                 return -1;
8483         }
8484         len = WPA_GET_BE16(pos);
8485         pos += 2;
8486         if (len > end - pos) {
8487                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8488                            "attributes");
8489                 return -1;
8490         }
8491         params.p2p_attr = pos;
8492         params.p2p_len = len;
8493         pos += len;
8494
8495         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8496                     params.wsc_attr, params.wsc_len);
8497         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8498                     params.p2p_attr, params.p2p_len);
8499         if (pos < end) {
8500                 wpa_hexdump(MSG_DEBUG,
8501                             "P2P: Ignored extra data after P2P attributes",
8502                             pos, end - pos);
8503         }
8504
8505         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8506         if (res)
8507                 return res;
8508
8509         if (params.next_step == NO_ACTION)
8510                 return 0;
8511
8512         if (params.next_step == BOTH_GO) {
8513                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8514                         MAC2STR(params.peer->p2p_device_addr));
8515                 return 0;
8516         }
8517
8518         if (params.next_step == PEER_CLIENT) {
8519                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8520                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8521                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8522                                 " ssid=\"%s\"",
8523                                 MAC2STR(params.peer->p2p_device_addr),
8524                                 params.go_freq,
8525                                 MAC2STR(params.go_dev_addr),
8526                                 wpa_ssid_txt(params.go_ssid,
8527                                              params.go_ssid_len));
8528                 } else {
8529                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8530                                 "peer=" MACSTR " freq=%d",
8531                                 MAC2STR(params.peer->p2p_device_addr),
8532                                 params.go_freq);
8533                 }
8534                 return 0;
8535         }
8536
8537         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8538                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8539                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8540                 return 0;
8541         }
8542
8543         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8544         wpa_s->p2p_oob_dev_pw = NULL;
8545
8546         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8547                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8548                            "received");
8549                 return -1;
8550         }
8551
8552         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8553         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8554         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8555                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8556         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8557                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8558         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8559
8560         if (tag) {
8561                 if (id < 0x10) {
8562                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8563                                    "peer OOB Device Password Id %u", id);
8564                         return -1;
8565                 }
8566                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8567                            "Device Password Id %u", id);
8568                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8569                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8570                                 params.oob_dev_pw_len -
8571                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
8572                 wpa_s->p2p_oob_dev_pw_id = id;
8573                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8574                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8575                         params.oob_dev_pw_len -
8576                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8577                 if (wpa_s->p2p_oob_dev_pw == NULL)
8578                         return -1;
8579
8580                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8581                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8582                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8583                         return -1;
8584         } else {
8585                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8586                            "without Device Password");
8587                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8588         }
8589
8590         switch (params.next_step) {
8591         case NO_ACTION:
8592         case BOTH_GO:
8593         case PEER_CLIENT:
8594                 /* already covered above */
8595                 return 0;
8596         case JOIN_GROUP:
8597                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8598         case AUTH_JOIN:
8599                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8600         case INIT_GO_NEG:
8601                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8602         case RESP_GO_NEG:
8603                 /* TODO: use own OOB Dev Pw */
8604                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8605         }
8606
8607         return -1;
8608 }
8609
8610
8611 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8612                              const struct wpabuf *data, int forced_freq)
8613 {
8614         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8615                 return -1;
8616
8617         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8618 }
8619
8620
8621 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8622                                  const struct wpabuf *req,
8623                                  const struct wpabuf *sel, int forced_freq)
8624 {
8625         struct wpabuf *tmp;
8626         int ret;
8627
8628         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8629                 return -1;
8630
8631         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8632
8633         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8634                           wpabuf_head(req), wpabuf_len(req));
8635         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8636                           wpabuf_head(sel), wpabuf_len(sel));
8637         if (forced_freq)
8638                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8639         tmp = ndef_parse_p2p(init ? sel : req);
8640         if (tmp == NULL) {
8641                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8642                 return -1;
8643         }
8644
8645         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8646                                                forced_freq);
8647         wpabuf_free(tmp);
8648
8649         return ret;
8650 }
8651
8652
8653 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8654 {
8655         const u8 *if_addr;
8656         int go_intent = wpa_s->conf->p2p_go_intent;
8657         struct wpa_supplicant *iface;
8658
8659         if (wpa_s->global->p2p == NULL)
8660                 return -1;
8661
8662         if (!enabled) {
8663                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8664                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8665                 {
8666                         if (!iface->ap_iface)
8667                                 continue;
8668                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8669                 }
8670                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8671                                                  0, NULL);
8672                 if (wpa_s->p2p_nfc_tag_enabled)
8673                         wpas_p2p_remove_pending_group_interface(wpa_s);
8674                 wpa_s->p2p_nfc_tag_enabled = 0;
8675                 return 0;
8676         }
8677
8678         if (wpa_s->global->p2p_disabled)
8679                 return -1;
8680
8681         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8682             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8683             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8684             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8685                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8686                            "to allow static handover cases");
8687                 return -1;
8688         }
8689
8690         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8691
8692         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8693         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8694         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8695         if (wpa_s->p2p_oob_dev_pw == NULL)
8696                 return -1;
8697         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8698
8699         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8700             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8701                 /*
8702                  * P2P Group Interface present and the command came on group
8703                  * interface, so enable the token for the current interface.
8704                  */
8705                 wpa_s->create_p2p_iface = 0;
8706         } else {
8707                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8708         }
8709
8710         if (wpa_s->create_p2p_iface) {
8711                 enum wpa_driver_if_type iftype;
8712                 /* Prepare to add a new interface for the group */
8713                 iftype = WPA_IF_P2P_GROUP;
8714                 if (go_intent == 15)
8715                         iftype = WPA_IF_P2P_GO;
8716                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8717                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8718                                    "interface for the group");
8719                         return -1;
8720                 }
8721
8722                 if_addr = wpa_s->pending_interface_addr;
8723         } else if (wpa_s->p2p_mgmt)
8724                 if_addr = wpa_s->parent->own_addr;
8725         else
8726                 if_addr = wpa_s->own_addr;
8727
8728         wpa_s->p2p_nfc_tag_enabled = enabled;
8729
8730         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8731                 struct hostapd_data *hapd;
8732                 if (iface->ap_iface == NULL)
8733                         continue;
8734                 hapd = iface->ap_iface->bss[0];
8735                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8736                 hapd->conf->wps_nfc_dh_pubkey =
8737                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8738                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8739                 hapd->conf->wps_nfc_dh_privkey =
8740                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8741                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8742                 hapd->conf->wps_nfc_dev_pw =
8743                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8744                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8745
8746                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8747                         wpa_dbg(iface, MSG_DEBUG,
8748                                 "P2P: Failed to enable NFC Tag for GO");
8749                 }
8750         }
8751         p2p_set_authorized_oob_dev_pw_id(
8752                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8753                 if_addr);
8754
8755         return 0;
8756 }
8757
8758 #endif /* CONFIG_WPS_NFC */
8759
8760
8761 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8762                                              struct wpa_used_freq_data *freqs,
8763                                              unsigned int num)
8764 {
8765         u8 curr_chan, cand, chan;
8766         unsigned int i;
8767
8768         /*
8769          * If possible, optimize the Listen channel to be a channel that is
8770          * already used by one of the other interfaces.
8771          */
8772         if (!wpa_s->conf->p2p_optimize_listen_chan)
8773                 return;
8774
8775         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8776                 return;
8777
8778         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8779         for (i = 0, cand = 0; i < num; i++) {
8780                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8781                 if (curr_chan == chan) {
8782                         cand = 0;
8783                         break;
8784                 }
8785
8786                 if (chan == 1 || chan == 6 || chan == 11)
8787                         cand = chan;
8788         }
8789
8790         if (cand) {
8791                 wpa_dbg(wpa_s, MSG_DEBUG,
8792                         "P2P: Update Listen channel to %u based on operating channel",
8793                         cand);
8794                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8795         }
8796 }
8797
8798
8799 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8800 {
8801         struct hostapd_config *conf;
8802         struct p2p_go_neg_results params;
8803         struct csa_settings csa_settings;
8804         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8805         int old_freq = current_ssid->frequency;
8806         int ret;
8807
8808         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8809                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8810                 return -1;
8811         }
8812
8813         /*
8814          * TODO: This function may not always work correctly. For example,
8815          * when we have a running GO and a BSS on a DFS channel.
8816          */
8817         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8818                 wpa_dbg(wpa_s, MSG_DEBUG,
8819                         "P2P CSA: Failed to select new frequency for GO");
8820                 return -1;
8821         }
8822
8823         if (current_ssid->frequency == params.freq) {
8824                 wpa_dbg(wpa_s, MSG_DEBUG,
8825                         "P2P CSA: Selected same frequency - not moving GO");
8826                 return 0;
8827         }
8828
8829         conf = hostapd_config_defaults();
8830         if (!conf) {
8831                 wpa_dbg(wpa_s, MSG_DEBUG,
8832                         "P2P CSA: Failed to allocate default config");
8833                 return -1;
8834         }
8835
8836         current_ssid->frequency = params.freq;
8837         if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
8838                 wpa_dbg(wpa_s, MSG_DEBUG,
8839                         "P2P CSA: Failed to create new GO config");
8840                 ret = -1;
8841                 goto out;
8842         }
8843
8844         if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
8845                 wpa_dbg(wpa_s, MSG_DEBUG,
8846                         "P2P CSA: CSA to a different band is not supported");
8847                 ret = -1;
8848                 goto out;
8849         }
8850
8851         os_memset(&csa_settings, 0, sizeof(csa_settings));
8852         csa_settings.cs_count = P2P_GO_CSA_COUNT;
8853         csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
8854         csa_settings.freq_params.freq = params.freq;
8855         csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
8856         csa_settings.freq_params.ht_enabled = conf->ieee80211n;
8857         csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
8858
8859         if (conf->ieee80211ac) {
8860                 int freq1 = 0, freq2 = 0;
8861                 u8 chan, opclass;
8862
8863                 if (ieee80211_freq_to_channel_ext(params.freq,
8864                                                   conf->secondary_channel,
8865                                                   conf->vht_oper_chwidth,
8866                                                   &opclass, &chan) ==
8867                     NUM_HOSTAPD_MODES) {
8868                         wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
8869                         ret = -1;
8870                         goto out;
8871                 }
8872
8873                 if (conf->vht_oper_centr_freq_seg0_idx)
8874                         freq1 = ieee80211_chan_to_freq(
8875                                 NULL, opclass,
8876                                 conf->vht_oper_centr_freq_seg0_idx);
8877
8878                 if (conf->vht_oper_centr_freq_seg1_idx)
8879                         freq2 = ieee80211_chan_to_freq(
8880                                 NULL, opclass,
8881                                 conf->vht_oper_centr_freq_seg1_idx);
8882
8883                 if (freq1 < 0 || freq2 < 0) {
8884                         wpa_dbg(wpa_s, MSG_DEBUG,
8885                                 "P2P CSA: Selected invalid VHT center freqs");
8886                         ret = -1;
8887                         goto out;
8888                 }
8889
8890                 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
8891                 csa_settings.freq_params.center_freq1 = freq1;
8892                 csa_settings.freq_params.center_freq2 = freq2;
8893
8894                 switch (conf->vht_oper_chwidth) {
8895                 case VHT_CHANWIDTH_80MHZ:
8896                 case VHT_CHANWIDTH_80P80MHZ:
8897                         csa_settings.freq_params.bandwidth = 80;
8898                         break;
8899                 case VHT_CHANWIDTH_160MHZ:
8900                         csa_settings.freq_params.bandwidth = 160;
8901                         break;
8902                 }
8903         }
8904
8905         ret = ap_switch_channel(wpa_s, &csa_settings);
8906 out:
8907         current_ssid->frequency = old_freq;
8908         hostapd_config_free(conf);
8909         return ret;
8910 }
8911
8912
8913 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8914 {
8915         struct p2p_go_neg_results params;
8916         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8917
8918         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8919
8920         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8921                 current_ssid->frequency);
8922
8923         /* Stop the AP functionality */
8924         /* TODO: Should do this in a way that does not indicated to possible
8925          * P2P Clients in the group that the group is terminated. */
8926         wpa_supplicant_ap_deinit(wpa_s);
8927
8928         /* Reselect the GO frequency */
8929         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8930                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8931                 wpas_p2p_group_delete(wpa_s,
8932                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8933                 return;
8934         }
8935         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8936                 params.freq);
8937
8938         if (params.freq &&
8939             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8940                 wpa_printf(MSG_DEBUG,
8941                            "P2P: Selected freq (%u MHz) is not valid for P2P",
8942                            params.freq);
8943                 wpas_p2p_group_delete(wpa_s,
8944                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8945                 return;
8946         }
8947
8948         /* Update the frequency */
8949         current_ssid->frequency = params.freq;
8950         wpa_s->connect_without_scan = current_ssid;
8951         wpa_s->reassociate = 1;
8952         wpa_s->disconnected = 0;
8953         wpa_supplicant_req_scan(wpa_s, 0, 0);
8954 }
8955
8956
8957 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8958 {
8959         struct wpa_supplicant *wpa_s = eloop_ctx;
8960
8961         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8962                 return;
8963
8964         wpas_p2p_go_update_common_freqs(wpa_s);
8965
8966         /* Do not move GO in the middle of a CSA */
8967         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8968                 wpa_printf(MSG_DEBUG,
8969                            "P2P: CSA is in progress - not moving GO");
8970                 return;
8971         }
8972
8973         /*
8974          * First, try a channel switch flow. If it is not supported or fails,
8975          * take down the GO and bring it up again.
8976          */
8977         if (wpas_p2p_move_go_csa(wpa_s) < 0)
8978                 wpas_p2p_move_go_no_csa(wpa_s);
8979 }
8980
8981
8982 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
8983 {
8984         struct wpa_supplicant *wpa_s = eloop_ctx;
8985         struct wpa_used_freq_data *freqs = NULL;
8986         unsigned int num = wpa_s->num_multichan_concurrent;
8987
8988         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8989         if (!freqs)
8990                 return;
8991
8992         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8993
8994         /* Previous attempt to move a GO was not possible -- try again. */
8995         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
8996                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
8997
8998         os_free(freqs);
8999 }
9000
9001
9002 /*
9003  * Consider moving a GO from its currently used frequency:
9004  * 1. It is possible that due to regulatory consideration the frequency
9005  *    can no longer be used and there is a need to evacuate the GO.
9006  * 2. It is possible that due to MCC considerations, it would be preferable
9007  *    to move the GO to a channel that is currently used by some other
9008  *    station interface.
9009  *
9010  * In case a frequency that became invalid is once again valid, cancel a
9011  * previously initiated GO frequency change.
9012  */
9013 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
9014                                             struct wpa_used_freq_data *freqs,
9015                                             unsigned int num)
9016 {
9017         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
9018         unsigned int timeout;
9019         int freq;
9020
9021         wpas_p2p_go_update_common_freqs(wpa_s);
9022
9023         freq = wpa_s->current_ssid->frequency;
9024         for (i = 0, invalid_freq = 0; i < num; i++) {
9025                 if (freqs[i].freq == freq) {
9026                         flags = freqs[i].flags;
9027
9028                         /* The channel is invalid, must change it */
9029                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
9030                                 wpa_dbg(wpa_s, MSG_DEBUG,
9031                                         "P2P: Freq=%d MHz no longer valid for GO",
9032                                         freq);
9033                                 invalid_freq = 1;
9034                         }
9035                 } else if (freqs[i].flags == 0) {
9036                         /* Freq is not used by any other station interface */
9037                         continue;
9038                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
9039                                                freqs[i].freq)) {
9040                         /* Freq is not valid for P2P use cases */
9041                         continue;
9042                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9043                            P2P_GO_FREQ_MOVE_SCM) {
9044                         policy_move = 1;
9045                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9046                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
9047                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9048                         policy_move = 1;
9049                 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
9050                             P2P_GO_FREQ_MOVE_SCM_ECSA) &&
9051                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9052                         if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
9053                                 policy_move = 1;
9054                         } else if ((wpa_s->drv_flags &
9055                                     WPA_DRIVER_FLAGS_AP_CSA) &&
9056                                    wpas_p2p_go_clients_support_ecsa(wpa_s)) {
9057                                 u8 chan;
9058
9059                                 /*
9060                                  * We do not support CSA between bands, so move
9061                                  * GO only within the same band.
9062                                  */
9063                                 if (wpa_s->ap_iface->current_mode->mode ==
9064                                     ieee80211_freq_to_chan(freqs[i].freq,
9065                                                            &chan))
9066                                         policy_move = 1;
9067                         }
9068                 }
9069         }
9070
9071         wpa_dbg(wpa_s, MSG_DEBUG,
9072                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9073                 invalid_freq, policy_move, flags);
9074
9075         /*
9076          * The channel is valid, or we are going to have a policy move, so
9077          * cancel timeout.
9078          */
9079         if (!invalid_freq || policy_move) {
9080                 wpa_dbg(wpa_s, MSG_DEBUG,
9081                         "P2P: Cancel a GO move from freq=%d MHz", freq);
9082                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9083
9084                 if (wpas_p2p_in_progress(wpa_s)) {
9085                         wpa_dbg(wpa_s, MSG_DEBUG,
9086                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9087                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9088                                              wpa_s, NULL);
9089                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9090                                                wpas_p2p_reconsider_moving_go,
9091                                                wpa_s, NULL);
9092                         return;
9093                 }
9094         }
9095
9096         if (!invalid_freq && (!policy_move || flags != 0)) {
9097                 wpa_dbg(wpa_s, MSG_DEBUG,
9098                         "P2P: Not initiating a GO frequency change");
9099                 return;
9100         }
9101
9102         /*
9103          * Do not consider moving GO if it is in the middle of a CSA. When the
9104          * CSA is finished this flow should be retriggered.
9105          */
9106         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9107                 wpa_dbg(wpa_s, MSG_DEBUG,
9108                         "P2P: Not initiating a GO frequency change - CSA is in progress");
9109                 return;
9110         }
9111
9112         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9113                 timeout = P2P_GO_FREQ_CHANGE_TIME;
9114         else
9115                 timeout = 0;
9116
9117         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9118                 freq, timeout);
9119         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9120         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9121 }
9122
9123
9124 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9125                                          struct wpa_used_freq_data *freqs,
9126                                          unsigned int num,
9127                                          enum wpas_p2p_channel_update_trig trig)
9128 {
9129         struct wpa_supplicant *ifs;
9130
9131         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9132                              NULL);
9133
9134         /*
9135          * Travers all the radio interfaces, and for each GO interface, check
9136          * if there is a need to move the GO from the frequency it is using,
9137          * or in case the frequency is valid again, cancel the evacuation flow.
9138          */
9139         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9140                          radio_list) {
9141                 if (ifs->current_ssid == NULL ||
9142                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9143                         continue;
9144
9145                 /*
9146                  * The GO was just started or completed channel switch, no need
9147                  * to move it.
9148                  */
9149                 if (wpa_s == ifs &&
9150                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9151                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9152                         wpa_dbg(wpa_s, MSG_DEBUG,
9153                                 "P2P: GO move - schedule re-consideration");
9154                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9155                                                wpas_p2p_reconsider_moving_go,
9156                                                wpa_s, NULL);
9157                         continue;
9158                 }
9159
9160                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9161         }
9162 }
9163
9164
9165 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9166 {
9167         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9168                 return;
9169
9170         wpas_p2p_update_channel_list(wpa_s,
9171                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9172 }
9173
9174
9175 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9176 {
9177         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9178                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9179                         "the management interface is being removed");
9180                 wpas_p2p_deinit_global(wpa_s->global);
9181         }
9182 }
9183
9184
9185 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9186 {
9187         if (wpa_s->ap_iface->bss)
9188                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9189         wpas_p2p_group_deinit(wpa_s);
9190 }