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  52  * it is currently using, but is no longer valid for P2P use cases.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  57  * Defines CSA parameters which are used when GO evacuates the no longer valid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
2393         if (wpa_s->p2p_scan_work && wpas_abort_ongoing_scan(wpa_s) < 0)
2394                 wpa_printf(MSG_DEBUG, "P2P: Abort ongoing scan failed");
2395
2396         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2397         wpas_notify_p2p_find_stopped(wpa_s);
2398 }
2399
2400
2401 struct wpas_p2p_listen_work {
2402         unsigned int freq;
2403         unsigned int duration;
2404         struct wpabuf *probe_resp_ie;
2405 };
2406
2407
2408 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2409 {
2410         if (lwork == NULL)
2411                 return;
2412         wpabuf_free(lwork->probe_resp_ie);
2413         os_free(lwork);
2414 }
2415
2416
2417 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2418 {
2419         struct wpas_p2p_listen_work *lwork;
2420
2421         if (!wpa_s->p2p_listen_work)
2422                 return;
2423
2424         lwork = wpa_s->p2p_listen_work->ctx;
2425         wpas_p2p_listen_work_free(lwork);
2426         radio_work_done(wpa_s->p2p_listen_work);
2427         wpa_s->p2p_listen_work = NULL;
2428 }
2429
2430
2431 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2432 {
2433         struct wpa_supplicant *wpa_s = work->wpa_s;
2434         struct wpas_p2p_listen_work *lwork = work->ctx;
2435         unsigned int duration;
2436
2437         if (deinit) {
2438                 if (work->started) {
2439                         wpa_s->p2p_listen_work = NULL;
2440                         wpas_stop_listen(wpa_s);
2441                 }
2442                 wpas_p2p_listen_work_free(lwork);
2443                 return;
2444         }
2445
2446         wpa_s->p2p_listen_work = work;
2447
2448         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2449
2450         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2451                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2452                            "report received Probe Request frames");
2453                 wpas_p2p_listen_work_done(wpa_s);
2454                 return;
2455         }
2456
2457         wpa_s->pending_listen_freq = lwork->freq;
2458         wpa_s->pending_listen_duration = lwork->duration;
2459
2460         duration = lwork->duration;
2461 #ifdef CONFIG_TESTING_OPTIONS
2462         if (wpa_s->extra_roc_dur) {
2463                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2464                            duration, duration + wpa_s->extra_roc_dur);
2465                 duration += wpa_s->extra_roc_dur;
2466         }
2467 #endif /* CONFIG_TESTING_OPTIONS */
2468
2469         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2470                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2471                            "to remain on channel (%u MHz) for Listen "
2472                            "state", lwork->freq);
2473                 wpas_p2p_listen_work_done(wpa_s);
2474                 wpa_s->pending_listen_freq = 0;
2475                 return;
2476         }
2477         wpa_s->off_channel_freq = 0;
2478         wpa_s->roc_waiting_drv_freq = lwork->freq;
2479 }
2480
2481
2482 static int wpas_start_listen(void *ctx, unsigned int freq,
2483                              unsigned int duration,
2484                              const struct wpabuf *probe_resp_ie)
2485 {
2486         struct wpa_supplicant *wpa_s = ctx;
2487         struct wpas_p2p_listen_work *lwork;
2488
2489         if (wpa_s->p2p_listen_work) {
2490                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2491                 return -1;
2492         }
2493
2494         lwork = os_zalloc(sizeof(*lwork));
2495         if (lwork == NULL)
2496                 return -1;
2497         lwork->freq = freq;
2498         lwork->duration = duration;
2499         if (probe_resp_ie) {
2500                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2501                 if (lwork->probe_resp_ie == NULL) {
2502                         wpas_p2p_listen_work_free(lwork);
2503                         return -1;
2504                 }
2505         }
2506
2507         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2508                            lwork) < 0) {
2509                 wpas_p2p_listen_work_free(lwork);
2510                 return -1;
2511         }
2512
2513         return 0;
2514 }
2515
2516
2517 static void wpas_stop_listen(void *ctx)
2518 {
2519         struct wpa_supplicant *wpa_s = ctx;
2520         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2521                 wpa_drv_cancel_remain_on_channel(wpa_s);
2522                 wpa_s->off_channel_freq = 0;
2523                 wpa_s->roc_waiting_drv_freq = 0;
2524         }
2525         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2526
2527         /*
2528          * Don't cancel Probe Request RX reporting for a connected P2P Client
2529          * handling Probe Request frames.
2530          */
2531         if (!wpa_s->p2p_cli_probe)
2532                 wpa_drv_probe_req_report(wpa_s, 0);
2533
2534         wpas_p2p_listen_work_done(wpa_s);
2535 }
2536
2537
2538 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2539                                 unsigned int freq)
2540 {
2541         struct wpa_supplicant *wpa_s = ctx;
2542         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2543                                  freq);
2544 }
2545
2546
2547 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2548                                          const u8 *peer, const char *params,
2549                                          unsigned int generated_pin)
2550 {
2551         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2552                        " %08d%s", MAC2STR(peer), generated_pin, params);
2553 }
2554
2555
2556 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2557                                         const u8 *peer, const char *params)
2558 {
2559         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2560                        "%s", MAC2STR(peer), params);
2561 }
2562
2563
2564 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2565                                const u8 *dev_addr, const u8 *pri_dev_type,
2566                                const char *dev_name, u16 supp_config_methods,
2567                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2568                                size_t group_id_len)
2569 {
2570         struct wpa_supplicant *wpa_s = ctx;
2571         char devtype[WPS_DEV_TYPE_BUFSIZE];
2572         char params[300];
2573         u8 empty_dev_type[8];
2574         unsigned int generated_pin = 0;
2575         struct wpa_supplicant *group = NULL;
2576         int res;
2577
2578         if (group_id) {
2579                 for (group = wpa_s->global->ifaces; group; group = group->next)
2580                 {
2581                         struct wpa_ssid *s = group->current_ssid;
2582                         if (s != NULL &&
2583                             s->mode == WPAS_MODE_P2P_GO &&
2584                             group_id_len - ETH_ALEN == s->ssid_len &&
2585                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2586                                       s->ssid_len) == 0)
2587                                 break;
2588                 }
2589         }
2590
2591         if (pri_dev_type == NULL) {
2592                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2593                 pri_dev_type = empty_dev_type;
2594         }
2595         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2596                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2597                           "dev_capab=0x%x group_capab=0x%x%s%s",
2598                           MAC2STR(dev_addr),
2599                           wps_dev_type_bin2str(pri_dev_type, devtype,
2600                                                sizeof(devtype)),
2601                           dev_name, supp_config_methods, dev_capab, group_capab,
2602                           group ? " group=" : "",
2603                           group ? group->ifname : "");
2604         if (os_snprintf_error(sizeof(params), res))
2605                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2606         params[sizeof(params) - 1] = '\0';
2607
2608         if (config_methods & WPS_CONFIG_DISPLAY) {
2609                 if (wps_generate_pin(&generated_pin) < 0) {
2610                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2611                         wpas_notify_p2p_provision_discovery(
2612                                 wpa_s, peer, 0 /* response */,
2613                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2614                         return;
2615                 }
2616                 wpas_prov_disc_local_display(wpa_s, peer, params,
2617                                              generated_pin);
2618         } else if (config_methods & WPS_CONFIG_KEYPAD)
2619                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2620         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2621                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2622                                MACSTR "%s", MAC2STR(peer), params);
2623
2624         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2625                                             P2P_PROV_DISC_SUCCESS,
2626                                             config_methods, generated_pin);
2627 }
2628
2629
2630 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2631 {
2632         struct wpa_supplicant *wpa_s = ctx;
2633         unsigned int generated_pin = 0;
2634         char params[20];
2635
2636         if (wpa_s->pending_pd_before_join &&
2637             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2638              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2639                 wpa_s->pending_pd_before_join = 0;
2640                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2641                            "join-existing-group operation");
2642                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2643                 return;
2644         }
2645
2646         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2647             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2648                 int res;
2649
2650                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2651                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2652                 if (os_snprintf_error(sizeof(params), res))
2653                         params[sizeof(params) - 1] = '\0';
2654         } else
2655                 params[0] = '\0';
2656
2657         if (config_methods & WPS_CONFIG_DISPLAY)
2658                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2659         else if (config_methods & WPS_CONFIG_KEYPAD) {
2660                 if (wps_generate_pin(&generated_pin) < 0) {
2661                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2662                         wpas_notify_p2p_provision_discovery(
2663                                 wpa_s, peer, 0 /* response */,
2664                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2665                         return;
2666                 }
2667                 wpas_prov_disc_local_display(wpa_s, peer, params,
2668                                              generated_pin);
2669         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2670                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2671                                MACSTR "%s", MAC2STR(peer), params);
2672
2673         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2674                                             P2P_PROV_DISC_SUCCESS,
2675                                             config_methods, generated_pin);
2676 }
2677
2678
2679 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2680                                 enum p2p_prov_disc_status status,
2681                                 u32 adv_id, const u8 *adv_mac,
2682                                 const char *deferred_session_resp)
2683 {
2684         struct wpa_supplicant *wpa_s = ctx;
2685
2686         if (wpa_s->p2p_fallback_to_go_neg) {
2687                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2688                         "failed - fall back to GO Negotiation");
2689                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
2690                                P2P_EVENT_FALLBACK_TO_GO_NEG
2691                                "reason=PD-failed");
2692                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2693                 return;
2694         }
2695
2696         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2697                 wpa_s->pending_pd_before_join = 0;
2698                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2699                            "join-existing-group operation (no ACK for PD "
2700                            "Req attempts)");
2701                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2702                 return;
2703         }
2704
2705         if (adv_id && adv_mac && deferred_session_resp) {
2706                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2707                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2708                                " deferred_session_resp='%s'",
2709                                MAC2STR(peer), status, adv_id,
2710                                deferred_session_resp);
2711         } else if (adv_id && adv_mac) {
2712                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2713                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2714                                MAC2STR(peer), status, adv_id);
2715         } else {
2716                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2717                                " p2p_dev_addr=" MACSTR " status=%d",
2718                                MAC2STR(peer), status);
2719         }
2720
2721         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2722                                             status, 0, 0);
2723 }
2724
2725
2726 static int freq_included(struct wpa_supplicant *wpa_s,
2727                          const struct p2p_channels *channels,
2728                          unsigned int freq)
2729 {
2730         if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2731             wpas_p2p_go_is_peer_freq(wpa_s, freq))
2732                 return 1;
2733         return 0;
2734 }
2735
2736
2737 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2738 {
2739         unsigned int num = P2P_MAX_CHANNELS;
2740         int *common_freqs;
2741         int ret;
2742
2743         p2p_go_dump_common_freqs(wpa_s);
2744         common_freqs = os_calloc(num, sizeof(int));
2745         if (!common_freqs)
2746                 return;
2747
2748         ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2749         if (ret < 0) {
2750                 wpa_dbg(wpa_s, MSG_DEBUG,
2751                         "P2P: Failed to get group common freqs");
2752                 os_free(common_freqs);
2753                 return;
2754         }
2755
2756         os_free(wpa_s->p2p_group_common_freqs);
2757         wpa_s->p2p_group_common_freqs = common_freqs;
2758         wpa_s->p2p_group_common_freqs_num = num;
2759         p2p_go_dump_common_freqs(wpa_s);
2760 }
2761
2762
2763 /*
2764  * Check if the given frequency is one of the possible operating frequencies
2765  * set after the completion of the GO Negotiation.
2766  */
2767 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2768 {
2769         unsigned int i;
2770
2771         p2p_go_dump_common_freqs(wpa_s);
2772
2773         /* assume no restrictions */
2774         if (!wpa_s->p2p_group_common_freqs_num)
2775                 return 1;
2776
2777         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2778                 if (wpa_s->p2p_group_common_freqs[i] == freq)
2779                         return 1;
2780         }
2781         return 0;
2782 }
2783
2784
2785 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2786                                struct sta_info *sta, void *ctx)
2787 {
2788         int *ecsa_support = ctx;
2789
2790         *ecsa_support &= sta->ecsa_supported;
2791
2792         return 0;
2793 }
2794
2795
2796 /* Check if all the peers support eCSA */
2797 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2798 {
2799         int ecsa_support = 1;
2800
2801         ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2802                         &ecsa_support);
2803
2804         return ecsa_support;
2805 }
2806
2807
2808 /**
2809  * Pick the best frequency to use from all the currently used frequencies.
2810  */
2811 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2812                                         struct wpa_used_freq_data *freqs,
2813                                         unsigned int num)
2814 {
2815         unsigned int i, c;
2816
2817         /* find a candidate freq that is supported by P2P */
2818         for (c = 0; c < num; c++)
2819                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2820                         break;
2821
2822         if (c == num)
2823                 return 0;
2824
2825         /* once we have a candidate, try to find a 'better' one */
2826         for (i = c + 1; i < num; i++) {
2827                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2828                         continue;
2829
2830                 /*
2831                  * 1. Infrastructure station interfaces have higher preference.
2832                  * 2. P2P Clients have higher preference.
2833                  * 3. All others.
2834                  */
2835                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2836                         c = i;
2837                         break;
2838                 }
2839
2840                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2841                         c = i;
2842         }
2843         return freqs[c].freq;
2844 }
2845
2846
2847 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2848                                   const u8 *go_dev_addr, const u8 *ssid,
2849                                   size_t ssid_len, int *go, u8 *group_bssid,
2850                                   int *force_freq, int persistent_group,
2851                                   const struct p2p_channels *channels,
2852                                   int dev_pw_id)
2853 {
2854         struct wpa_supplicant *wpa_s = ctx;
2855         struct wpa_ssid *s;
2856         struct wpa_used_freq_data *freqs;
2857         struct wpa_supplicant *grp;
2858         int best_freq;
2859
2860         if (!persistent_group) {
2861                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2862                            " to join an active group (SSID: %s)",
2863                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2864                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2865                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2866                      == 0 ||
2867                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2868                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2869                                    "authorized invitation");
2870                         goto accept_inv;
2871                 }
2872
2873 #ifdef CONFIG_WPS_NFC
2874                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2875                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2876                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2877                         wpa_s->p2p_wps_method = WPS_NFC;
2878                         wpa_s->pending_join_wps_method = WPS_NFC;
2879                         os_memcpy(wpa_s->pending_join_dev_addr,
2880                                   go_dev_addr, ETH_ALEN);
2881                         os_memcpy(wpa_s->pending_join_iface_addr,
2882                                   bssid, ETH_ALEN);
2883                         goto accept_inv;
2884                 }
2885 #endif /* CONFIG_WPS_NFC */
2886
2887                 /*
2888                  * Do not accept the invitation automatically; notify user and
2889                  * request approval.
2890                  */
2891                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2892         }
2893
2894         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2895         if (grp) {
2896                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2897                            "running persistent group");
2898                 if (*go)
2899                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2900                 goto accept_inv;
2901         }
2902
2903         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2904             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2905                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2906                            "invitation to re-invoke a persistent group");
2907                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2908         } else if (!wpa_s->conf->persistent_reconnect)
2909                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2910
2911         for (s = wpa_s->conf->ssid; s; s = s->next) {
2912                 if (s->disabled == 2 &&
2913                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2914                     s->ssid_len == ssid_len &&
2915                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2916                         break;
2917         }
2918
2919         if (!s) {
2920                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2921                            " requested reinvocation of an unknown group",
2922                            MAC2STR(sa));
2923                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2924         }
2925
2926         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2927                 *go = 1;
2928                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2929                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2930                                    "interface is already in use - reject "
2931                                    "invitation");
2932                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2933                 }
2934                 if (wpa_s->p2p_mgmt)
2935                         os_memcpy(group_bssid, wpa_s->parent->own_addr,
2936                                   ETH_ALEN);
2937                 else
2938                         os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2939         } else if (s->mode == WPAS_MODE_P2P_GO) {
2940                 *go = 1;
2941                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2942                 {
2943                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2944                                    "interface address for the group");
2945                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2946                 }
2947                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2948                           ETH_ALEN);
2949         }
2950
2951 accept_inv:
2952         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2953
2954         best_freq = 0;
2955         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2956                           sizeof(struct wpa_used_freq_data));
2957         if (freqs) {
2958                 int num_channels = wpa_s->num_multichan_concurrent;
2959                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2960                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2961                 os_free(freqs);
2962         }
2963
2964         /* Get one of the frequencies currently in use */
2965         if (best_freq > 0) {
2966                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2967                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2968
2969                 if (wpa_s->num_multichan_concurrent < 2 ||
2970                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2971                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2972                         *force_freq = best_freq;
2973                 }
2974         }
2975
2976         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2977             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2978                 if (*go == 0) {
2979                         /* We are the client */
2980                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2981                                    "running a GO but we are capable of MCC, "
2982                                    "figure out the best channel to use");
2983                         *force_freq = 0;
2984                 } else if (!freq_included(wpa_s, channels, *force_freq)) {
2985                         /* We are the GO, and *force_freq is not in the
2986                          * intersection */
2987                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2988                                    "in intersection but we are capable of MCC, "
2989                                    "figure out the best channel to use",
2990                                    *force_freq);
2991                         *force_freq = 0;
2992                 }
2993         }
2994
2995         return P2P_SC_SUCCESS;
2996 }
2997
2998
2999 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
3000                                      const u8 *ssid, size_t ssid_len,
3001                                      const u8 *go_dev_addr, u8 status,
3002                                      int op_freq)
3003 {
3004         struct wpa_supplicant *wpa_s = ctx;
3005         struct wpa_ssid *s;
3006
3007         for (s = wpa_s->conf->ssid; s; s = s->next) {
3008                 if (s->disabled == 2 &&
3009                     s->ssid_len == ssid_len &&
3010                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3011                         break;
3012         }
3013
3014         if (status == P2P_SC_SUCCESS) {
3015                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3016                            " was accepted; op_freq=%d MHz, SSID=%s",
3017                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3018                 if (s) {
3019                         int go = s->mode == WPAS_MODE_P2P_GO;
3020                         wpas_p2p_group_add_persistent(
3021                                 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL,
3022                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
3023                                 1);
3024                 } else if (bssid) {
3025                         wpa_s->user_initiated_pd = 0;
3026                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3027                                       wpa_s->p2p_wps_method, 0, op_freq,
3028                                       ssid, ssid_len);
3029                 }
3030                 return;
3031         }
3032
3033         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3034                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3035                            " was rejected (status %u)", MAC2STR(sa), status);
3036                 return;
3037         }
3038
3039         if (!s) {
3040                 if (bssid) {
3041                         wpa_msg_global(wpa_s, MSG_INFO,
3042                                        P2P_EVENT_INVITATION_RECEIVED
3043                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3044                                        " bssid=" MACSTR " unknown-network",
3045                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3046                                        MAC2STR(bssid));
3047                 } else {
3048                         wpa_msg_global(wpa_s, MSG_INFO,
3049                                        P2P_EVENT_INVITATION_RECEIVED
3050                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3051                                        " unknown-network",
3052                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3053                 }
3054                 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3055                                                     bssid, 0, op_freq);
3056                 return;
3057         }
3058
3059         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3060                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3061                                "sa=" MACSTR " persistent=%d freq=%d",
3062                                MAC2STR(sa), s->id, op_freq);
3063         } else {
3064                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3065                                "sa=" MACSTR " persistent=%d",
3066                                MAC2STR(sa), s->id);
3067         }
3068         wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3069                                             s->id, op_freq);
3070 }
3071
3072
3073 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3074                                         struct wpa_ssid *ssid,
3075                                         const u8 *peer, int inv)
3076 {
3077         size_t i;
3078         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3079
3080         if (ssid == NULL)
3081                 return;
3082
3083         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3084                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3085                               ETH_ALEN) == 0)
3086                         break;
3087         }
3088         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3089                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3090                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3091                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3092                                    "due to invitation result", ssid->id);
3093                         wpas_notify_network_removed(wpa_s, ssid);
3094                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3095                         return;
3096                 }
3097                 return; /* Peer not found in client list */
3098         }
3099
3100         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3101                    "group %d client list%s",
3102                    MAC2STR(peer), ssid->id,
3103                    inv ? " due to invitation result" : "");
3104         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3105                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3106                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3107         ssid->num_p2p_clients--;
3108         if (p2p_wpa_s->conf->update_config &&
3109             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3110                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3111 }
3112
3113
3114 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3115                                           const u8 *peer)
3116 {
3117         struct wpa_ssid *ssid;
3118
3119         wpa_s = wpa_s->global->p2p_invite_group;
3120         if (wpa_s == NULL)
3121                 return; /* No known invitation group */
3122         ssid = wpa_s->current_ssid;
3123         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3124             !ssid->p2p_persistent_group)
3125                 return; /* Not operating as a GO in persistent group */
3126         ssid = wpas_p2p_get_persistent(wpa_s->p2pdev, peer,
3127                                        ssid->ssid, ssid->ssid_len);
3128         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3129 }
3130
3131
3132 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3133                                    const struct p2p_channels *channels,
3134                                    const u8 *peer, int neg_freq,
3135                                    int peer_oper_freq)
3136 {
3137         struct wpa_supplicant *wpa_s = ctx;
3138         struct wpa_ssid *ssid;
3139         int freq;
3140
3141         if (bssid) {
3142                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3143                                "status=%d " MACSTR,
3144                                status, MAC2STR(bssid));
3145         } else {
3146                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3147                                "status=%d ", status);
3148         }
3149         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3150
3151         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3152                    status, MAC2STR(peer));
3153         if (wpa_s->pending_invite_ssid_id == -1) {
3154                 struct wpa_supplicant *group_if =
3155                         wpa_s->global->p2p_invite_group;
3156
3157                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3158                         wpas_remove_persistent_client(wpa_s, peer);
3159
3160                 /*
3161                  * Invitation to an active group. If this is successful and we
3162                  * are the GO, set the client wait to postpone some concurrent
3163                  * operations and to allow provisioning and connection to happen
3164                  * more quickly.
3165                  */
3166                 if (status == P2P_SC_SUCCESS &&
3167                     group_if && group_if->current_ssid &&
3168                     group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3169                         os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3170 #ifdef CONFIG_TESTING_OPTIONS
3171                         if (group_if->p2p_go_csa_on_inv) {
3172                                 wpa_printf(MSG_DEBUG,
3173                                            "Testing: force P2P GO CSA after invitation");
3174                                 eloop_cancel_timeout(
3175                                         wpas_p2p_reconsider_moving_go,
3176                                         wpa_s, NULL);
3177                                 eloop_register_timeout(
3178                                         0, 50000,
3179                                         wpas_p2p_reconsider_moving_go,
3180                                         wpa_s, NULL);
3181                         }
3182 #endif /* CONFIG_TESTING_OPTIONS */
3183                 }
3184                 return;
3185         }
3186
3187         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3188                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3189                            "invitation exchange to indicate readiness for "
3190                            "re-invocation");
3191         }
3192
3193         if (status != P2P_SC_SUCCESS) {
3194                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3195                         ssid = wpa_config_get_network(
3196                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3197                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3198                 }
3199                 wpas_p2p_remove_pending_group_interface(wpa_s);
3200                 return;
3201         }
3202
3203         ssid = wpa_config_get_network(wpa_s->conf,
3204                                       wpa_s->pending_invite_ssid_id);
3205         if (ssid == NULL) {
3206                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3207                            "data matching with invitation");
3208                 return;
3209         }
3210
3211         /*
3212          * The peer could have missed our ctrl::ack frame for Invitation
3213          * Response and continue retransmitting the frame. To reduce the
3214          * likelihood of the peer not getting successful TX status for the
3215          * Invitation Response frame, wait a short time here before starting
3216          * the persistent group so that we will remain on the current channel to
3217          * acknowledge any possible retransmission from the peer.
3218          */
3219         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3220                 "starting persistent group");
3221         os_sleep(0, 50000);
3222
3223         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3224             freq_included(wpa_s, channels, neg_freq))
3225                 freq = neg_freq;
3226         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3227                  freq_included(wpa_s, channels, peer_oper_freq))
3228                 freq = peer_oper_freq;
3229         else
3230                 freq = 0;
3231
3232         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3233                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3234         wpas_p2p_group_add_persistent(wpa_s, ssid,
3235                                       ssid->mode == WPAS_MODE_P2P_GO,
3236                                       wpa_s->p2p_persistent_go_freq,
3237                                       freq,
3238                                       wpa_s->p2p_go_vht_center_freq2,
3239                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3240                                       wpa_s->p2p_go_max_oper_chwidth,
3241                                       channels,
3242                                       ssid->mode == WPAS_MODE_P2P_GO ?
3243                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3244                                       0, 1);
3245 }
3246
3247
3248 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3249                                     unsigned int freq)
3250 {
3251         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3252                 return 1;
3253         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3254 }
3255
3256
3257 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3258 {
3259         reg->channel[reg->channels] = chan;
3260         reg->channels++;
3261 }
3262
3263
3264 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3265                                      struct p2p_channels *chan,
3266                                      struct p2p_channels *cli_chan)
3267 {
3268         int i, cla = 0;
3269
3270         wpa_s->global->p2p_24ghz_social_channels = 1;
3271
3272         os_memset(cli_chan, 0, sizeof(*cli_chan));
3273
3274         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3275                    "band");
3276
3277         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3278         chan->reg_class[cla].reg_class = 81;
3279         chan->reg_class[cla].channels = 0;
3280         for (i = 0; i < 11; i++) {
3281                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3282                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3283         }
3284         if (chan->reg_class[cla].channels)
3285                 cla++;
3286
3287         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3288                    "band");
3289
3290         /* Operating class 115 - 5 GHz, channels 36-48 */
3291         chan->reg_class[cla].reg_class = 115;
3292         chan->reg_class[cla].channels = 0;
3293         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3294                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3295         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3296                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3297         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3298                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3299         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3300                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3301         if (chan->reg_class[cla].channels)
3302                 cla++;
3303
3304         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3305                    "band");
3306
3307         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3308         chan->reg_class[cla].reg_class = 124;
3309         chan->reg_class[cla].channels = 0;
3310         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3311                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3312         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3313                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3314         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3315                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3316         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3317                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3318         if (chan->reg_class[cla].channels)
3319                 cla++;
3320
3321         chan->reg_classes = cla;
3322         return 0;
3323 }
3324
3325
3326 enum chan_allowed {
3327         NOT_ALLOWED, NO_IR, ALLOWED
3328 };
3329
3330 static int has_channel(struct wpa_global *global,
3331                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3332 {
3333         int i;
3334         unsigned int freq;
3335
3336         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3337                 chan * 5;
3338         if (wpas_p2p_disallowed_freq(global, freq))
3339                 return NOT_ALLOWED;
3340
3341         for (i = 0; i < mode->num_channels; i++) {
3342                 if (mode->channels[i].chan == chan) {
3343                         if (flags)
3344                                 *flags = mode->channels[i].flag;
3345                         if (mode->channels[i].flag &
3346                             (HOSTAPD_CHAN_DISABLED |
3347                              HOSTAPD_CHAN_RADAR))
3348                                 return NOT_ALLOWED;
3349                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3350                                 return NO_IR;
3351                         return ALLOWED;
3352                 }
3353         }
3354
3355         return NOT_ALLOWED;
3356 }
3357
3358
3359 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3360                                      struct hostapd_hw_modes *mode,
3361                                      u8 channel)
3362 {
3363         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3364         unsigned int i;
3365
3366         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3367                 return 0;
3368
3369         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3370                 /*
3371                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3372                  * so the center channel is 6 channels away from the start/end.
3373                  */
3374                 if (channel >= center_channels[i] - 6 &&
3375                     channel <= center_channels[i] + 6)
3376                         return center_channels[i];
3377
3378         return 0;
3379 }
3380
3381
3382 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3383                                                struct hostapd_hw_modes *mode,
3384                                                u8 channel, u8 bw)
3385 {
3386         u8 center_chan;
3387         int i, flags;
3388         enum chan_allowed res, ret = ALLOWED;
3389
3390         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3391         if (!center_chan)
3392                 return NOT_ALLOWED;
3393         if (center_chan >= 58 && center_chan <= 138)
3394                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3395
3396         /* check all the channels are available */
3397         for (i = 0; i < 4; i++) {
3398                 int adj_chan = center_chan - 6 + i * 4;
3399
3400                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3401                 if (res == NOT_ALLOWED)
3402                         return NOT_ALLOWED;
3403                 if (res == NO_IR)
3404                         ret = NO_IR;
3405
3406                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3407                         return NOT_ALLOWED;
3408                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3409                         return NOT_ALLOWED;
3410                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3411                         return NOT_ALLOWED;
3412                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3413                         return NOT_ALLOWED;
3414         }
3415
3416         return ret;
3417 }
3418
3419
3420 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3421                                      struct hostapd_hw_modes *mode,
3422                                      u8 channel)
3423 {
3424         u8 center_channels[] = { 50, 114 };
3425         unsigned int i;
3426
3427         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3428                 return 0;
3429
3430         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3431                 /*
3432                  * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3433                  * so the center channel is 14 channels away from the start/end.
3434                  */
3435                 if (channel >= center_channels[i] - 14 &&
3436                     channel <= center_channels[i] + 14)
3437                         return center_channels[i];
3438
3439         return 0;
3440 }
3441
3442
3443 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3444                                                struct hostapd_hw_modes *mode,
3445                                                u8 channel, u8 bw)
3446 {
3447         u8 center_chan;
3448         int i, flags;
3449         enum chan_allowed res, ret = ALLOWED;
3450
3451         center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3452         if (!center_chan)
3453                 return NOT_ALLOWED;
3454         /* VHT 160 MHz uses DFS channels in most countries. */
3455
3456         /* Check all the channels are available */
3457         for (i = 0; i < 8; i++) {
3458                 int adj_chan = center_chan - 14 + i * 4;
3459
3460                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3461                 if (res == NOT_ALLOWED)
3462                         return NOT_ALLOWED;
3463
3464                 if (res == NO_IR)
3465                         ret = NO_IR;
3466
3467                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3468                         return NOT_ALLOWED;
3469                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3470                         return NOT_ALLOWED;
3471                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3472                         return NOT_ALLOWED;
3473                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3474                         return NOT_ALLOWED;
3475                 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3476                         return NOT_ALLOWED;
3477                 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3478                         return NOT_ALLOWED;
3479                 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3480                         return NOT_ALLOWED;
3481                 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3482                         return NOT_ALLOWED;
3483         }
3484
3485         return ret;
3486 }
3487
3488
3489 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3490                                                  struct hostapd_hw_modes *mode,
3491                                                  u8 channel, u8 bw)
3492 {
3493         int flag = 0;
3494         enum chan_allowed res, res2;
3495
3496         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3497         if (bw == BW40MINUS) {
3498                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3499                         return NOT_ALLOWED;
3500                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3501         } else if (bw == BW40PLUS) {
3502                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3503                         return NOT_ALLOWED;
3504                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3505         } else if (bw == BW80) {
3506                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3507         } else if (bw == BW160) {
3508                 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3509         }
3510
3511         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3512                 return NOT_ALLOWED;
3513         if (res == NO_IR || res2 == NO_IR)
3514                 return NO_IR;
3515         return res;
3516 }
3517
3518
3519 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3520                                    struct p2p_channels *chan,
3521                                    struct p2p_channels *cli_chan)
3522 {
3523         struct hostapd_hw_modes *mode;
3524         int cla, op, cli_cla;
3525
3526         if (wpa_s->hw.modes == NULL) {
3527                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3528                            "of all supported channels; assume dualband "
3529                            "support");
3530                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3531         }
3532
3533         cla = cli_cla = 0;
3534
3535         for (op = 0; global_op_class[op].op_class; op++) {
3536                 const struct oper_class_map *o = &global_op_class[op];
3537                 u8 ch;
3538                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3539
3540                 if (o->p2p == NO_P2P_SUPP)
3541                         continue;
3542
3543                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3544                 if (mode == NULL)
3545                         continue;
3546                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3547                         wpa_s->global->p2p_24ghz_social_channels = 1;
3548                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3549                         enum chan_allowed res;
3550                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3551                         if (res == ALLOWED) {
3552                                 if (reg == NULL) {
3553                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3554                                                    o->op_class);
3555                                         reg = &chan->reg_class[cla];
3556                                         cla++;
3557                                         reg->reg_class = o->op_class;
3558                                 }
3559                                 reg->channel[reg->channels] = ch;
3560                                 reg->channels++;
3561                         } else if (res == NO_IR &&
3562                                    wpa_s->conf->p2p_add_cli_chan) {
3563                                 if (cli_reg == NULL) {
3564                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3565                                                    o->op_class);
3566                                         cli_reg = &cli_chan->reg_class[cli_cla];
3567                                         cli_cla++;
3568                                         cli_reg->reg_class = o->op_class;
3569                                 }
3570                                 cli_reg->channel[cli_reg->channels] = ch;
3571                                 cli_reg->channels++;
3572                         }
3573                 }
3574                 if (reg) {
3575                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3576                                     reg->channel, reg->channels);
3577                 }
3578                 if (cli_reg) {
3579                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3580                                     cli_reg->channel, cli_reg->channels);
3581                 }
3582         }
3583
3584         chan->reg_classes = cla;
3585         cli_chan->reg_classes = cli_cla;
3586
3587         return 0;
3588 }
3589
3590
3591 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3592                            struct hostapd_hw_modes *mode, u8 channel)
3593 {
3594         int op;
3595         enum chan_allowed ret;
3596
3597         for (op = 0; global_op_class[op].op_class; op++) {
3598                 const struct oper_class_map *o = &global_op_class[op];
3599                 u8 ch;
3600
3601                 if (o->p2p == NO_P2P_SUPP)
3602                         continue;
3603
3604                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3605                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3606                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3607                             ch != channel)
3608                                 continue;
3609                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3610                         if (ret == ALLOWED)
3611                                 return (o->bw == BW40MINUS) ? -1 : 1;
3612                 }
3613         }
3614         return 0;
3615 }
3616
3617
3618 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3619                               struct hostapd_hw_modes *mode, u8 channel)
3620 {
3621         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3622                 return 0;
3623
3624         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3625 }
3626
3627
3628 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3629                                struct hostapd_hw_modes *mode, u8 channel)
3630 {
3631         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3632                 return 0;
3633         return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3634 }
3635
3636
3637 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3638                         size_t buf_len)
3639 {
3640         struct wpa_supplicant *wpa_s = ctx;
3641
3642         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3643                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3644                         break;
3645         }
3646         if (wpa_s == NULL)
3647                 return -1;
3648
3649         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3650 }
3651
3652
3653 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3654                                               const u8 *ssid, size_t ssid_len)
3655 {
3656         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3657                 struct wpa_ssid *s = wpa_s->current_ssid;
3658                 if (s == NULL)
3659                         continue;
3660                 if (s->mode != WPAS_MODE_P2P_GO &&
3661                     s->mode != WPAS_MODE_AP &&
3662                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3663                         continue;
3664                 if (s->ssid_len != ssid_len ||
3665                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3666                         continue;
3667                 return wpa_s;
3668         }
3669
3670         return NULL;
3671
3672 }
3673
3674
3675 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3676                                                   const u8 *peer_dev_addr)
3677 {
3678         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3679                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3680                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3681                         continue;
3682                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3683                         return wpa_s;
3684         }
3685
3686         return NULL;
3687 }
3688
3689
3690 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3691 {
3692         struct wpa_supplicant *wpa_s = ctx;
3693
3694         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3695 }
3696
3697
3698 static int wpas_is_concurrent_session_active(void *ctx)
3699 {
3700         struct wpa_supplicant *wpa_s = ctx;
3701         struct wpa_supplicant *ifs;
3702
3703         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3704                 if (ifs == wpa_s)
3705                         continue;
3706                 if (ifs->wpa_state > WPA_ASSOCIATED)
3707                         return 1;
3708         }
3709         return 0;
3710 }
3711
3712
3713 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3714 {
3715         struct wpa_supplicant *wpa_s = ctx;
3716         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3717 }
3718
3719
3720 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3721                                   const char *conf_p2p_dev)
3722 {
3723         struct wpa_interface iface;
3724         struct wpa_supplicant *p2pdev_wpa_s;
3725         char ifname[100];
3726         char force_name[100];
3727         int ret;
3728
3729         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3730                           wpa_s->ifname);
3731         if (os_snprintf_error(sizeof(ifname), ret))
3732                 return -1;
3733         force_name[0] = '\0';
3734         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3735         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3736                              force_name, wpa_s->pending_interface_addr, NULL);
3737         if (ret < 0) {
3738                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3739                 return ret;
3740         }
3741         os_strlcpy(wpa_s->pending_interface_name, ifname,
3742                    sizeof(wpa_s->pending_interface_name));
3743
3744         os_memset(&iface, 0, sizeof(iface));
3745         iface.p2p_mgmt = 1;
3746         iface.ifname = wpa_s->pending_interface_name;
3747         iface.driver = wpa_s->driver->name;
3748         iface.driver_param = wpa_s->conf->driver_param;
3749
3750         /*
3751          * If a P2P Device configuration file was given, use it as the interface
3752          * configuration file (instead of using parent's configuration file.
3753          */
3754         if (conf_p2p_dev) {
3755                 iface.confname = conf_p2p_dev;
3756                 iface.ctrl_interface = NULL;
3757         } else {
3758                 iface.confname = wpa_s->confname;
3759                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3760         }
3761
3762         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3763         if (!p2pdev_wpa_s) {
3764                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3765                 return -1;
3766         }
3767
3768         p2pdev_wpa_s->p2pdev = p2pdev_wpa_s;
3769         wpa_s->pending_interface_name[0] = '\0';
3770         return 0;
3771 }
3772
3773
3774 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3775                                const u8 *noa, size_t noa_len)
3776 {
3777         struct wpa_supplicant *wpa_s, *intf = ctx;
3778         char hex[100];
3779
3780         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3781                 if (wpa_s->waiting_presence_resp)
3782                         break;
3783         }
3784         if (!wpa_s) {
3785                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3786                 return;
3787         }
3788         wpa_s->waiting_presence_resp = 0;
3789
3790         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3791         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3792                 " status=%u noa=%s", MAC2STR(src), status, hex);
3793 }
3794
3795
3796 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3797                                      size_t ssid_len, u8 *go_dev_addr,
3798                                      u8 *ret_ssid, size_t *ret_ssid_len,
3799                                      u8 *intended_iface_addr)
3800 {
3801         struct wpa_supplicant *wpa_s = ctx;
3802         struct wpa_ssid *s;
3803
3804         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3805         if (s) {
3806                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3807                 *ret_ssid_len = s->ssid_len;
3808                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3809
3810                 if (s->mode != WPAS_MODE_P2P_GO) {
3811                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3812                 } else if (wpas_p2p_create_iface(wpa_s)) {
3813                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3814                                 return 0;
3815
3816                         os_memcpy(intended_iface_addr,
3817                                   wpa_s->pending_interface_addr, ETH_ALEN);
3818                 } else {
3819                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3820                                   ETH_ALEN);
3821                 }
3822                 return 1;
3823         }
3824
3825         return 0;
3826 }
3827
3828
3829 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3830                             u8 *ssid, size_t *ssid_len, int *group_iface,
3831                             unsigned int *freq)
3832 {
3833         struct wpa_supplicant *wpa_s = ctx;
3834         struct wpa_supplicant *go;
3835         struct wpa_ssid *s;
3836
3837         /*
3838          * group_iface will be set to 1 only if a dedicated interface for P2P
3839          * role is required. First, we try to reuse an active GO. However,
3840          * if it is not present, we will try to reactivate an existing
3841          * persistent group and set group_iface to 1, so the caller will know
3842          * that the pending interface should be used.
3843          */
3844         *group_iface = 0;
3845
3846         if (freq)
3847                 *freq = 0;
3848
3849         go = wpas_p2p_get_go_group(wpa_s);
3850         if (!go) {
3851                 s = wpas_p2p_get_persistent_go(wpa_s);
3852                 *group_iface = wpas_p2p_create_iface(wpa_s);
3853                 if (s)
3854                         os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3855                 else
3856                         return 0;
3857         } else {
3858                 s = go->current_ssid;
3859                 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3860                 if (freq)
3861                         *freq = go->assoc_freq;
3862         }
3863
3864         os_memcpy(ssid, s->ssid, s->ssid_len);
3865         *ssid_len = s->ssid_len;
3866
3867         return 1;
3868 }
3869
3870
3871 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3872                                     const u8 *ssid, size_t ssid_len)
3873 {
3874         struct wpa_supplicant *wpa_s = ctx;
3875         struct wpa_ssid *s;
3876         int save_config = 0;
3877         size_t i;
3878
3879         /* Start with our first choice of Persistent Groups */
3880         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3881                 if (go && ssid && ssid_len &&
3882                     s->ssid_len == ssid_len &&
3883                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3884                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3885                         break;
3886
3887                 /* Remove stale persistent group */
3888                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3889                         wpa_config_remove_network(wpa_s->conf, s->id);
3890                         save_config = 1;
3891                         continue;
3892                 }
3893
3894                 for (i = 0; i < s->num_p2p_clients; i++) {
3895                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3896                                       peer, ETH_ALEN) != 0)
3897                                 continue;
3898
3899                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3900                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3901                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3902                         break;
3903                 }
3904                 s->num_p2p_clients--;
3905                 save_config = 1;
3906         }
3907
3908         if (save_config)
3909                 p2p_config_write(wpa_s);
3910
3911         /* Return TRUE if valid SSID remains */
3912         return s != NULL;
3913 }
3914
3915
3916 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3917                                        const u8 *feat_cap, size_t feat_cap_len)
3918 {
3919         static const char pref[] = " feature_cap=";
3920         int ret;
3921
3922         buf[0] = '\0';
3923
3924         /*
3925          * We expect a feature capability to contain at least one byte to be
3926          * reported. The string buffer provided by the caller function is
3927          * expected to be big enough to contain all bytes of the attribute for
3928          * known specifications. This function truncates the reported bytes if
3929          * the feature capability data exceeds the string buffer size.
3930          */
3931         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3932                 return;
3933
3934         os_memcpy(buf, pref, sizeof(pref));
3935         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3936                                buf_len - sizeof(pref) + 1,
3937                                feat_cap, feat_cap_len);
3938
3939         if (ret != (2 * (int) feat_cap_len))
3940                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3941 }
3942
3943
3944 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3945                                     const u8 *adv_mac, const u8 *ses_mac,
3946                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3947                                     u8 conncap, int passwd_id,
3948                                     const u8 *persist_ssid,
3949                                     size_t persist_ssid_size, int response_done,
3950                                     int prov_start, const char *session_info,
3951                                     const u8 *feat_cap, size_t feat_cap_len,
3952                                     unsigned int freq,
3953                                     const u8 *group_ssid, size_t group_ssid_len)
3954 {
3955         struct wpa_supplicant *wpa_s = ctx;
3956         u8 mac[ETH_ALEN];
3957         struct wpa_ssid *persistent_go, *stale, *s = NULL;
3958         int save_config = 0;
3959         struct wpa_supplicant *go_wpa_s;
3960         char feat_cap_str[256];
3961
3962         if (!dev)
3963                 return;
3964
3965         os_memset(mac, 0, ETH_ALEN);
3966         if (!adv_mac)
3967                 adv_mac = mac;
3968         if (!ses_mac)
3969                 ses_mac = mac;
3970         if (!grp_mac)
3971                 grp_mac = mac;
3972
3973         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3974                                    feat_cap, feat_cap_len);
3975
3976         if (prov_start) {
3977                 if (session_info == NULL) {
3978                         wpa_msg_global(wpa_s, MSG_INFO,
3979                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3980                                        " adv_id=%x conncap=%x"
3981                                        " adv_mac=" MACSTR
3982                                        " session=%x mac=" MACSTR
3983                                        " dev_passwd_id=%d%s",
3984                                        MAC2STR(dev), adv_id, conncap,
3985                                        MAC2STR(adv_mac),
3986                                        ses_id, MAC2STR(ses_mac),
3987                                        passwd_id, feat_cap_str);
3988                 } else {
3989                         wpa_msg_global(wpa_s, MSG_INFO,
3990                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3991                                        " adv_id=%x conncap=%x"
3992                                        " adv_mac=" MACSTR
3993                                        " session=%x mac=" MACSTR
3994                                        " dev_passwd_id=%d info='%s'%s",
3995                                        MAC2STR(dev), adv_id, conncap,
3996                                        MAC2STR(adv_mac),
3997                                        ses_id, MAC2STR(ses_mac),
3998                                        passwd_id, session_info, feat_cap_str);
3999                 }
4000                 return;
4001         }
4002
4003         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
4004         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4005
4006         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4007                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4008                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4009
4010                 if (persistent_go && !persistent_go->num_p2p_clients) {
4011                         /* remove empty persistent GO */
4012                         wpa_config_remove_network(wpa_s->conf,
4013                                                   persistent_go->id);
4014                 }
4015
4016                 wpa_msg_global(wpa_s, MSG_INFO,
4017                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4018                                " status=%d"
4019                                " adv_id=%x adv_mac=" MACSTR
4020                                " session=%x mac=" MACSTR "%s",
4021                                MAC2STR(dev), status,
4022                                adv_id, MAC2STR(adv_mac),
4023                                ses_id, MAC2STR(ses_mac), feat_cap_str);
4024                 return;
4025         }
4026
4027         /* Clean up stale persistent groups with this device */
4028         if (persist_ssid && persist_ssid_size)
4029                 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4030                                             persist_ssid_size);
4031
4032         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4033             is_zero_ether_addr(grp_mac)) {
4034                 wpa_dbg(wpa_s, MSG_ERROR,
4035                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4036                 return;
4037         }
4038
4039         for (;;) {
4040                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4041                 if (!stale)
4042                         break;
4043
4044                 if (s && s->ssid_len == stale->ssid_len &&
4045                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4046                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4047                         break;
4048
4049                 /* Remove stale persistent group */
4050                 if (stale->mode != WPAS_MODE_P2P_GO ||
4051                     stale->num_p2p_clients <= 1) {
4052                         wpa_config_remove_network(wpa_s->conf, stale->id);
4053                 } else {
4054                         size_t i;
4055
4056                         for (i = 0; i < stale->num_p2p_clients; i++) {
4057                                 if (os_memcmp(stale->p2p_client_list +
4058                                               i * ETH_ALEN,
4059                                               dev, ETH_ALEN) == 0) {
4060                                         os_memmove(stale->p2p_client_list +
4061                                                    i * ETH_ALEN,
4062                                                    stale->p2p_client_list +
4063                                                    (i + 1) * ETH_ALEN,
4064                                                    (stale->num_p2p_clients -
4065                                                     i - 1) * ETH_ALEN);
4066                                         break;
4067                                 }
4068                         }
4069                         stale->num_p2p_clients--;
4070                 }
4071                 save_config = 1;
4072         }
4073
4074         if (save_config)
4075                 p2p_config_write(wpa_s);
4076
4077         if (s) {
4078                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4079                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4080
4081                 if (persistent_go && s != persistent_go &&
4082                     !persistent_go->num_p2p_clients) {
4083                         /* remove empty persistent GO */
4084                         wpa_config_remove_network(wpa_s->conf,
4085                                                   persistent_go->id);
4086                         /* Save config */
4087                 }
4088
4089                 wpa_msg_global(wpa_s, MSG_INFO,
4090                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4091                                " status=%d"
4092                                " adv_id=%x adv_mac=" MACSTR
4093                                " session=%x mac=" MACSTR
4094                                " persist=%d%s",
4095                                MAC2STR(dev), status,
4096                                adv_id, MAC2STR(adv_mac),
4097                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4098                 return;
4099         }
4100
4101         if (conncap == P2PS_SETUP_GROUP_OWNER) {
4102                 /*
4103                  * We need to copy the interface name. Simply saving a
4104                  * pointer isn't enough, since if we use pending_interface_name
4105                  * it will be overwritten when the group is added.
4106                  */
4107                 char go_ifname[100];
4108
4109                 go_ifname[0] = '\0';
4110                 if (!go_wpa_s) {
4111                         wpa_s->global->pending_p2ps_group = 1;
4112                         wpa_s->global->pending_p2ps_group_freq = freq;
4113
4114                         if (!wpas_p2p_create_iface(wpa_s))
4115                                 os_memcpy(go_ifname, wpa_s->ifname,
4116                                           sizeof(go_ifname));
4117                         else if (wpa_s->pending_interface_name[0])
4118                                 os_memcpy(go_ifname,
4119                                           wpa_s->pending_interface_name,
4120                                           sizeof(go_ifname));
4121
4122                         if (!go_ifname[0]) {
4123                                 wpas_p2ps_prov_complete(
4124                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4125                                         dev, adv_mac, ses_mac,
4126                                         grp_mac, adv_id, ses_id, 0, 0,
4127                                         NULL, 0, 0, 0, NULL, NULL, 0, 0,
4128                                         NULL, 0);
4129                                 return;
4130                         }
4131
4132                         /* If PD Resp complete, start up the GO */
4133                         if (response_done && persistent_go) {
4134                                 wpas_p2p_group_add_persistent(
4135                                         wpa_s, persistent_go,
4136                                         0, 0, freq, 0, 0, 0, 0, NULL,
4137                                         persistent_go->mode ==
4138                                         WPAS_MODE_P2P_GO ?
4139                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4140                                         0, 0);
4141                         } else if (response_done) {
4142                                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4143                         }
4144
4145                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4146                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4147                                           ETH_ALEN);
4148                                 wpa_s->p2ps_method_config_any = 1;
4149                         }
4150                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4151                         os_memcpy(go_ifname, go_wpa_s->ifname,
4152                                   sizeof(go_ifname));
4153
4154                         if (is_zero_ether_addr(grp_mac)) {
4155                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4156                                         "P2P: Setting PIN-1 for ANY");
4157                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4158                                                           "12345670", NULL, 0,
4159                                                           0);
4160                         } else {
4161                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4162                                         "P2P: Setting PIN-1 for " MACSTR,
4163                                         MAC2STR(grp_mac));
4164                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4165                                                           "12345670", NULL, 0,
4166                                                           0);
4167                         }
4168
4169                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4170                         wpa_s->p2ps_method_config_any = 1;
4171                 }
4172
4173                 wpa_msg_global(wpa_s, MSG_INFO,
4174                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4175                                " status=%d conncap=%x"
4176                                " adv_id=%x adv_mac=" MACSTR
4177                                " session=%x mac=" MACSTR
4178                                " dev_passwd_id=%d go=%s%s",
4179                                MAC2STR(dev), status, conncap,
4180                                adv_id, MAC2STR(adv_mac),
4181                                ses_id, MAC2STR(ses_mac),
4182                                passwd_id, go_ifname, feat_cap_str);
4183                 return;
4184         }
4185
4186         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4187                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4188
4189         if (persistent_go && !persistent_go->num_p2p_clients) {
4190                 /* remove empty persistent GO */
4191                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4192         }
4193
4194         if (conncap == P2PS_SETUP_CLIENT) {
4195                 char ssid_hex[32 * 2 + 1];
4196
4197                 if (group_ssid)
4198                         wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex),
4199                                          group_ssid, group_ssid_len);
4200                 else
4201                         ssid_hex[0] = '\0';
4202                 wpa_msg_global(wpa_s, MSG_INFO,
4203                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4204                                " status=%d conncap=%x"
4205                                " adv_id=%x adv_mac=" MACSTR
4206                                " session=%x mac=" MACSTR
4207                                " dev_passwd_id=%d join=" MACSTR "%s%s%s",
4208                                MAC2STR(dev), status, conncap,
4209                                adv_id, MAC2STR(adv_mac),
4210                                ses_id, MAC2STR(ses_mac),
4211                                passwd_id, MAC2STR(grp_mac), feat_cap_str,
4212                                group_ssid ? " group_ssid=" : "", ssid_hex);
4213         } else {
4214                 wpa_msg_global(wpa_s, MSG_INFO,
4215                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4216                                " status=%d conncap=%x"
4217                                " adv_id=%x adv_mac=" MACSTR
4218                                " session=%x mac=" MACSTR
4219                                " dev_passwd_id=%d%s",
4220                                MAC2STR(dev), status, conncap,
4221                                adv_id, MAC2STR(adv_mac),
4222                                ses_id, MAC2STR(ses_mac),
4223                                passwd_id, feat_cap_str);
4224         }
4225 }
4226
4227
4228 static int _wpas_p2p_in_progress(void *ctx)
4229 {
4230         struct wpa_supplicant *wpa_s = ctx;
4231         return wpas_p2p_in_progress(wpa_s);
4232 }
4233
4234
4235 static int wpas_prov_disc_resp_cb(void *ctx)
4236 {
4237         struct wpa_supplicant *wpa_s = ctx;
4238         struct wpa_ssid *persistent_go;
4239         unsigned int freq;
4240
4241         if (!wpa_s->global->pending_p2ps_group)
4242                 return 0;
4243
4244         freq = wpa_s->global->pending_p2ps_group_freq;
4245         wpa_s->global->pending_p2ps_group_freq = 0;
4246         wpa_s->global->pending_p2ps_group = 0;
4247
4248         if (wpas_p2p_get_go_group(wpa_s))
4249                 return 0;
4250         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4251
4252         if (persistent_go) {
4253                 wpas_p2p_group_add_persistent(
4254                         wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL,
4255                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4256                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4257         } else {
4258                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4259         }
4260
4261         return 1;
4262 }
4263
4264
4265 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4266                                        unsigned int *len,
4267                                        unsigned int *freq_list)
4268 {
4269         struct wpa_supplicant *wpa_s = ctx;
4270
4271         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4272                                           WPA_IF_P2P_CLIENT, len, freq_list);
4273 }
4274
4275
4276 /**
4277  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4278  * @global: Pointer to global data from wpa_supplicant_init()
4279  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4280  * Returns: 0 on success, -1 on failure
4281  */
4282 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4283 {
4284         struct p2p_config p2p;
4285         int i;
4286
4287         if (wpa_s->conf->p2p_disabled)
4288                 return 0;
4289
4290         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4291                 return 0;
4292
4293         if (global->p2p)
4294                 return 0;
4295
4296         os_memset(&p2p, 0, sizeof(p2p));
4297         p2p.cb_ctx = wpa_s;
4298         p2p.debug_print = wpas_p2p_debug_print;
4299         p2p.p2p_scan = wpas_p2p_scan;
4300         p2p.send_action = wpas_send_action;
4301         p2p.send_action_done = wpas_send_action_done;
4302         p2p.go_neg_completed = wpas_go_neg_completed;
4303         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4304         p2p.dev_found = wpas_dev_found;
4305         p2p.dev_lost = wpas_dev_lost;
4306         p2p.find_stopped = wpas_find_stopped;
4307         p2p.start_listen = wpas_start_listen;
4308         p2p.stop_listen = wpas_stop_listen;
4309         p2p.send_probe_resp = wpas_send_probe_resp;
4310         p2p.sd_request = wpas_sd_request;
4311         p2p.sd_response = wpas_sd_response;
4312         p2p.prov_disc_req = wpas_prov_disc_req;
4313         p2p.prov_disc_resp = wpas_prov_disc_resp;
4314         p2p.prov_disc_fail = wpas_prov_disc_fail;
4315         p2p.invitation_process = wpas_invitation_process;
4316         p2p.invitation_received = wpas_invitation_received;
4317         p2p.invitation_result = wpas_invitation_result;
4318         p2p.get_noa = wpas_get_noa;
4319         p2p.go_connected = wpas_go_connected;
4320         p2p.presence_resp = wpas_presence_resp;
4321         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4322         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4323         p2p.get_persistent_group = wpas_get_persistent_group;
4324         p2p.get_go_info = wpas_get_go_info;
4325         p2p.remove_stale_groups = wpas_remove_stale_groups;
4326         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4327         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4328         p2p.p2ps_group_capability = p2ps_group_capability;
4329         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4330
4331         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4332         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4333         p2p.dev_name = wpa_s->conf->device_name;
4334         p2p.manufacturer = wpa_s->conf->manufacturer;
4335         p2p.model_name = wpa_s->conf->model_name;
4336         p2p.model_number = wpa_s->conf->model_number;
4337         p2p.serial_number = wpa_s->conf->serial_number;
4338         if (wpa_s->wps) {
4339                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4340                 p2p.config_methods = wpa_s->wps->config_methods;
4341         }
4342
4343         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4344                 wpa_printf(MSG_ERROR,
4345                            "P2P: Failed to configure supported channel list");
4346                 return -1;
4347         }
4348
4349         if (wpa_s->conf->p2p_listen_reg_class &&
4350             wpa_s->conf->p2p_listen_channel) {
4351                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4352                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4353                 p2p.channel_forced = 1;
4354         } else {
4355                 /*
4356                  * Pick one of the social channels randomly as the listen
4357                  * channel.
4358                  */
4359                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4360                                                  &p2p.channel) != 0) {
4361                         wpa_printf(MSG_INFO,
4362                                    "P2P: No social channels supported by the driver - do not enable P2P");
4363                         return 0;
4364                 }
4365                 p2p.channel_forced = 0;
4366         }
4367         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4368                    p2p.reg_class, p2p.channel);
4369
4370         if (wpa_s->conf->p2p_oper_reg_class &&
4371             wpa_s->conf->p2p_oper_channel) {
4372                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4373                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4374                 p2p.cfg_op_channel = 1;
4375                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4376                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4377
4378         } else {
4379                 /*
4380                  * Use random operation channel from 2.4 GHz band social
4381                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4382                  * other preference is indicated.
4383                  */
4384                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4385                                                  &p2p.op_channel) != 0) {
4386                         wpa_printf(MSG_ERROR,
4387                                    "P2P: Failed to select random social channel as operation channel");
4388                         return -1;
4389                 }
4390                 p2p.cfg_op_channel = 0;
4391                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4392                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4393         }
4394
4395         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4396                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4397                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4398         }
4399
4400         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4401                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4402                 p2p.country[2] = 0x04;
4403         } else
4404                 os_memcpy(p2p.country, "XX\x04", 3);
4405
4406         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4407                   WPS_DEV_TYPE_LEN);
4408
4409         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4410         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4411                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4412
4413         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4414                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4415
4416         p2p.max_peers = 100;
4417
4418         if (wpa_s->conf->p2p_ssid_postfix) {
4419                 p2p.ssid_postfix_len =
4420                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4421                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4422                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4423                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4424                           p2p.ssid_postfix_len);
4425         }
4426
4427         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4428
4429         p2p.max_listen = wpa_s->max_remain_on_chan;
4430
4431         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4432             wpa_s->conf->p2p_passphrase_len <= 63)
4433                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4434         else
4435                 p2p.passphrase_len = 8;
4436
4437         global->p2p = p2p_init(&p2p);
4438         if (global->p2p == NULL)
4439                 return -1;
4440         global->p2p_init_wpa_s = wpa_s;
4441
4442         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4443                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4444                         continue;
4445                 p2p_add_wps_vendor_extension(
4446                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4447         }
4448
4449         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4450
4451         return 0;
4452 }
4453
4454
4455 /**
4456  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4457  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4458  *
4459  * This function deinitialize per-interface P2P data.
4460  */
4461 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4462 {
4463         if (wpa_s->driver && wpa_s->drv_priv)
4464                 wpa_drv_probe_req_report(wpa_s, 0);
4465
4466         if (wpa_s->go_params) {
4467                 /* Clear any stored provisioning info */
4468                 p2p_clear_provisioning_info(
4469                         wpa_s->global->p2p,
4470                         wpa_s->go_params->peer_device_addr);
4471         }
4472
4473         os_free(wpa_s->go_params);
4474         wpa_s->go_params = NULL;
4475         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4476         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4477         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4478         wpa_s->p2p_long_listen = 0;
4479         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4480         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4481         wpas_p2p_remove_pending_group_interface(wpa_s);
4482         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4483         wpas_p2p_listen_work_done(wpa_s);
4484         if (wpa_s->p2p_send_action_work) {
4485                 os_free(wpa_s->p2p_send_action_work->ctx);
4486                 radio_work_done(wpa_s->p2p_send_action_work);
4487                 wpa_s->p2p_send_action_work = NULL;
4488         }
4489         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4490
4491         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4492         wpa_s->p2p_oob_dev_pw = NULL;
4493
4494         os_free(wpa_s->p2p_group_common_freqs);
4495         wpa_s->p2p_group_common_freqs = NULL;
4496         wpa_s->p2p_group_common_freqs_num = 0;
4497
4498         /* TODO: remove group interface from the driver if this wpa_s instance
4499          * is on top of a P2P group interface */
4500 }
4501
4502
4503 /**
4504  * wpas_p2p_deinit_global - Deinitialize global P2P module
4505  * @global: Pointer to global data from wpa_supplicant_init()
4506  *
4507  * This function deinitializes the global (per device) P2P module.
4508  */
4509 static void wpas_p2p_deinit_global(struct wpa_global *global)
4510 {
4511         struct wpa_supplicant *wpa_s, *tmp;
4512
4513         wpa_s = global->ifaces;
4514
4515         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4516
4517         /* Remove remaining P2P group interfaces */
4518         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4519                 wpa_s = wpa_s->next;
4520         while (wpa_s) {
4521                 tmp = global->ifaces;
4522                 while (tmp &&
4523                        (tmp == wpa_s ||
4524                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4525                         tmp = tmp->next;
4526                 }
4527                 if (tmp == NULL)
4528                         break;
4529                 /* Disconnect from the P2P group and deinit the interface */
4530                 wpas_p2p_disconnect(tmp);
4531         }
4532
4533         /*
4534          * Deinit GO data on any possibly remaining interface (if main
4535          * interface is used as GO).
4536          */
4537         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4538                 if (wpa_s->ap_iface)
4539                         wpas_p2p_group_deinit(wpa_s);
4540         }
4541
4542         p2p_deinit(global->p2p);
4543         global->p2p = NULL;
4544         global->p2p_init_wpa_s = NULL;
4545 }
4546
4547
4548 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4549 {
4550         if (wpa_s->conf->p2p_no_group_iface)
4551                 return 0; /* separate interface disabled per configuration */
4552         if (wpa_s->drv_flags &
4553             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4554              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4555                 return 1; /* P2P group requires a new interface in every case
4556                            */
4557         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4558                 return 0; /* driver does not support concurrent operations */
4559         if (wpa_s->global->ifaces->next)
4560                 return 1; /* more that one interface already in use */
4561         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4562                 return 1; /* this interface is already in use */
4563         return 0;
4564 }
4565
4566
4567 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4568                                  const u8 *peer_addr,
4569                                  enum p2p_wps_method wps_method,
4570                                  int go_intent, const u8 *own_interface_addr,
4571                                  unsigned int force_freq, int persistent_group,
4572                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4573 {
4574         if (persistent_group && wpa_s->conf->persistent_reconnect)
4575                 persistent_group = 2;
4576
4577         /*
4578          * Increase GO config timeout if HT40 is used since it takes some time
4579          * to scan channels for coex purposes before the BSS can be started.
4580          */
4581         p2p_set_config_timeout(wpa_s->global->p2p,
4582                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4583
4584         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4585                            go_intent, own_interface_addr, force_freq,
4586                            persistent_group, ssid ? ssid->ssid : NULL,
4587                            ssid ? ssid->ssid_len : 0,
4588                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4589                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4590                            0);
4591 }
4592
4593
4594 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4595                                 const u8 *peer_addr,
4596                                 enum p2p_wps_method wps_method,
4597                                 int go_intent, const u8 *own_interface_addr,
4598                                 unsigned int force_freq, int persistent_group,
4599                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4600 {
4601         if (persistent_group && wpa_s->conf->persistent_reconnect)
4602                 persistent_group = 2;
4603
4604         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4605                              go_intent, own_interface_addr, force_freq,
4606                              persistent_group, ssid ? ssid->ssid : NULL,
4607                              ssid ? ssid->ssid_len : 0, pref_freq,
4608                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4609                              0);
4610 }
4611
4612
4613 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4614 {
4615         wpa_s->p2p_join_scan_count++;
4616         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4617                    wpa_s->p2p_join_scan_count);
4618         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4619                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4620                            " for join operationg - stop join attempt",
4621                            MAC2STR(wpa_s->pending_join_iface_addr));
4622                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4623                 if (wpa_s->p2p_auto_pd) {
4624                         wpa_s->p2p_auto_pd = 0;
4625                         wpa_msg_global(wpa_s, MSG_INFO,
4626                                        P2P_EVENT_PROV_DISC_FAILURE
4627                                        " p2p_dev_addr=" MACSTR " status=N/A",
4628                                        MAC2STR(wpa_s->pending_join_dev_addr));
4629                         return;
4630                 }
4631                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4632                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4633                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4634         }
4635 }
4636
4637
4638 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4639 {
4640         int res;
4641         unsigned int num, i;
4642         struct wpa_used_freq_data *freqs;
4643
4644         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4645                 /* Multiple channels are supported and not all are in use */
4646                 return 0;
4647         }
4648
4649         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4650                           sizeof(struct wpa_used_freq_data));
4651         if (!freqs)
4652                 return 1;
4653
4654         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4655                                         wpa_s->num_multichan_concurrent);
4656
4657         for (i = 0; i < num; i++) {
4658                 if (freqs[i].freq == freq) {
4659                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4660                                    freq);
4661                         res = 0;
4662                         goto exit_free;
4663                 }
4664         }
4665
4666         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4667         res = 1;
4668
4669 exit_free:
4670         os_free(freqs);
4671         return res;
4672 }
4673
4674
4675 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4676                             const u8 *peer_dev_addr)
4677 {
4678         struct wpa_bss *bss;
4679         int updated;
4680
4681         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4682         if (bss == NULL)
4683                 return -1;
4684         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4685                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4686                            "last scan");
4687                 return 0;
4688         }
4689
4690         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4691                                     &bss->last_update);
4692         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4693                    "%ld.%06ld (%supdated in last scan)",
4694                    bss->last_update.sec, bss->last_update.usec,
4695                    updated ? "": "not ");
4696
4697         return updated;
4698 }
4699
4700
4701 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4702                                    struct wpa_scan_results *scan_res)
4703 {
4704         struct wpa_bss *bss = NULL;
4705         int freq;
4706         u8 iface_addr[ETH_ALEN];
4707
4708         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4709
4710         if (wpa_s->global->p2p_disabled)
4711                 return;
4712
4713         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4714                    scan_res ? (int) scan_res->num : -1,
4715                    wpa_s->p2p_auto_join ? "auto_" : "");
4716
4717         if (scan_res)
4718                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4719
4720         if (wpa_s->p2p_auto_pd) {
4721                 int join = wpas_p2p_peer_go(wpa_s,
4722                                             wpa_s->pending_join_dev_addr);
4723                 if (join == 0 &&
4724                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4725                         wpa_s->auto_pd_scan_retry++;
4726                         bss = wpa_bss_get_bssid_latest(
4727                                 wpa_s, wpa_s->pending_join_dev_addr);
4728                         if (bss) {
4729                                 freq = bss->freq;
4730                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4731                                            "the peer " MACSTR " at %d MHz",
4732                                            wpa_s->auto_pd_scan_retry,
4733                                            MAC2STR(wpa_s->
4734                                                    pending_join_dev_addr),
4735                                            freq);
4736                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4737                                 return;
4738                         }
4739                 }
4740
4741                 if (join < 0)
4742                         join = 0;
4743
4744                 wpa_s->p2p_auto_pd = 0;
4745                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4746                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4747                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4748                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4749                                       wpa_s->pending_join_dev_addr, NULL,
4750                                       wpa_s->pending_pd_config_methods, join,
4751                                       0, wpa_s->user_initiated_pd) < 0) {
4752                         wpa_s->p2p_auto_pd = 0;
4753                         wpa_msg_global(wpa_s, MSG_INFO,
4754                                        P2P_EVENT_PROV_DISC_FAILURE
4755                                        " p2p_dev_addr=" MACSTR " status=N/A",
4756                                        MAC2STR(wpa_s->pending_join_dev_addr));
4757                 }
4758                 return;
4759         }
4760
4761         if (wpa_s->p2p_auto_join) {
4762                 int join = wpas_p2p_peer_go(wpa_s,
4763                                             wpa_s->pending_join_dev_addr);
4764                 if (join < 0) {
4765                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4766                                    "running a GO -> use GO Negotiation");
4767                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4768                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4769                                        "reason=peer-not-running-GO");
4770                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4771                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4772                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4773                                          wpa_s->p2p_go_intent,
4774                                          wpa_s->p2p_connect_freq,
4775                                          wpa_s->p2p_go_vht_center_freq2,
4776                                          wpa_s->p2p_persistent_id,
4777                                          wpa_s->p2p_pd_before_go_neg,
4778                                          wpa_s->p2p_go_ht40,
4779                                          wpa_s->p2p_go_vht,
4780                                          wpa_s->p2p_go_max_oper_chwidth,
4781                                          NULL, 0);
4782                         return;
4783                 }
4784
4785                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4786                            "try to join the group", join ? "" :
4787                            " in older scan");
4788                 if (!join) {
4789                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4790                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4791                         wpa_s->p2p_fallback_to_go_neg = 1;
4792                 }
4793         }
4794
4795         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4796                                  wpa_s->pending_join_iface_addr);
4797         if (freq < 0 &&
4798             p2p_get_interface_addr(wpa_s->global->p2p,
4799                                    wpa_s->pending_join_dev_addr,
4800                                    iface_addr) == 0 &&
4801             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4802             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4803                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4804                            "address for join from " MACSTR " to " MACSTR
4805                            " based on newly discovered P2P peer entry",
4806                            MAC2STR(wpa_s->pending_join_iface_addr),
4807                            MAC2STR(iface_addr));
4808                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4809                           ETH_ALEN);
4810
4811                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4812                                          wpa_s->pending_join_iface_addr);
4813         }
4814         if (freq >= 0) {
4815                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4816                            "from P2P peer table: %d MHz", freq);
4817         }
4818         if (wpa_s->p2p_join_ssid_len) {
4819                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4820                            MACSTR " and SSID %s",
4821                            MAC2STR(wpa_s->pending_join_iface_addr),
4822                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4823                                         wpa_s->p2p_join_ssid_len));
4824                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4825                                   wpa_s->p2p_join_ssid,
4826                                   wpa_s->p2p_join_ssid_len);
4827         } else if (!bss) {
4828                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4829                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4830                 bss = wpa_bss_get_bssid_latest(wpa_s,
4831                                                wpa_s->pending_join_iface_addr);
4832         }
4833         if (bss) {
4834                 u8 dev_addr[ETH_ALEN];
4835
4836                 freq = bss->freq;
4837                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4838                            "from BSS table: %d MHz (SSID %s)", freq,
4839                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4840                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4841                                        dev_addr) == 0 &&
4842                     os_memcmp(wpa_s->pending_join_dev_addr,
4843                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4844                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4845                               ETH_ALEN) != 0) {
4846                         wpa_printf(MSG_DEBUG,
4847                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4848                                    MAC2STR(dev_addr),
4849                                    MAC2STR(wpa_s->pending_join_dev_addr));
4850                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4851                                   ETH_ALEN);
4852                 }
4853         }
4854         if (freq > 0) {
4855                 u16 method;
4856
4857                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4858                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4859                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4860                                        "reason=FREQ_CONFLICT");
4861                         wpas_notify_p2p_group_formation_failure(
4862                                 wpa_s, "FREQ_CONFLICT");
4863                         return;
4864                 }
4865
4866                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4867                            "prior to joining an existing group (GO " MACSTR
4868                            " freq=%u MHz)",
4869                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4870                 wpa_s->pending_pd_before_join = 1;
4871
4872                 switch (wpa_s->pending_join_wps_method) {
4873                 case WPS_PIN_DISPLAY:
4874                         method = WPS_CONFIG_KEYPAD;
4875                         break;
4876                 case WPS_PIN_KEYPAD:
4877                         method = WPS_CONFIG_DISPLAY;
4878                         break;
4879                 case WPS_PBC:
4880                         method = WPS_CONFIG_PUSHBUTTON;
4881                         break;
4882                 case WPS_P2PS:
4883                         method = WPS_CONFIG_P2PS;
4884                         break;
4885                 default:
4886                         method = 0;
4887                         break;
4888                 }
4889
4890                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4891                                                wpa_s->pending_join_dev_addr) ==
4892                      method)) {
4893                         /*
4894                          * We have already performed provision discovery for
4895                          * joining the group. Proceed directly to join
4896                          * operation without duplicated provision discovery. */
4897                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4898                                    "with " MACSTR " already done - proceed to "
4899                                    "join",
4900                                    MAC2STR(wpa_s->pending_join_dev_addr));
4901                         wpa_s->pending_pd_before_join = 0;
4902                         goto start;
4903                 }
4904
4905                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4906                                       wpa_s->pending_join_dev_addr,
4907                                       NULL, method, 1,
4908                                       freq, wpa_s->user_initiated_pd) < 0) {
4909                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4910                                    "Discovery Request before joining an "
4911                                    "existing group");
4912                         wpa_s->pending_pd_before_join = 0;
4913                         goto start;
4914                 }
4915                 return;
4916         }
4917
4918         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4919         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4920         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4921         wpas_p2p_check_join_scan_limit(wpa_s);
4922         return;
4923
4924 start:
4925         /* Start join operation immediately */
4926         wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid,
4927                             wpa_s->p2p_join_ssid_len);
4928 }
4929
4930
4931 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4932                                    const u8 *ssid, size_t ssid_len)
4933 {
4934         int ret;
4935         struct wpa_driver_scan_params params;
4936         struct wpabuf *wps_ie, *ies;
4937         size_t ielen;
4938         int freqs[2] = { 0, 0 };
4939         unsigned int bands;
4940
4941         os_memset(&params, 0, sizeof(params));
4942
4943         /* P2P Wildcard SSID */
4944         params.num_ssids = 1;
4945         if (ssid && ssid_len) {
4946                 params.ssids[0].ssid = ssid;
4947                 params.ssids[0].ssid_len = ssid_len;
4948                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4949                 wpa_s->p2p_join_ssid_len = ssid_len;
4950         } else {
4951                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4952                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4953                 wpa_s->p2p_join_ssid_len = 0;
4954         }
4955
4956         wpa_s->wps->dev.p2p = 1;
4957         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4958                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4959                                         NULL);
4960         if (wps_ie == NULL) {
4961                 wpas_p2p_scan_res_join(wpa_s, NULL);
4962                 return;
4963         }
4964
4965         if (!freq) {
4966                 int oper_freq;
4967                 /*
4968                  * If freq is not provided, check the operating freq of the GO
4969                  * and use a single channel scan on if possible.
4970                  */
4971                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4972                                               wpa_s->pending_join_iface_addr);
4973                 if (oper_freq > 0)
4974                         freq = oper_freq;
4975         }
4976         if (freq > 0) {
4977                 freqs[0] = freq;
4978                 params.freqs = freqs;
4979         }
4980
4981         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4982         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4983         if (ies == NULL) {
4984                 wpabuf_free(wps_ie);
4985                 wpas_p2p_scan_res_join(wpa_s, NULL);
4986                 return;
4987         }
4988         wpabuf_put_buf(ies, wps_ie);
4989         wpabuf_free(wps_ie);
4990
4991         bands = wpas_get_bands(wpa_s, freqs);
4992         p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
4993
4994         params.p2p_probe = 1;
4995         params.extra_ies = wpabuf_head(ies);
4996         params.extra_ies_len = wpabuf_len(ies);
4997
4998         /*
4999          * Run a scan to update BSS table and start Provision Discovery once
5000          * the new scan results become available.
5001          */
5002         ret = wpa_drv_scan(wpa_s, &params);
5003         if (!ret) {
5004                 os_get_reltime(&wpa_s->scan_trigger_time);
5005                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
5006                 wpa_s->own_scan_requested = 1;
5007         }
5008
5009         wpabuf_free(ies);
5010
5011         if (ret) {
5012                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5013                            "try again later");
5014                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5015                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5016                 wpas_p2p_check_join_scan_limit(wpa_s);
5017         }
5018 }
5019
5020
5021 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5022 {
5023         struct wpa_supplicant *wpa_s = eloop_ctx;
5024         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5025 }
5026
5027
5028 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5029                          const u8 *dev_addr, enum p2p_wps_method wps_method,
5030                          int auto_join, int op_freq,
5031                          const u8 *ssid, size_t ssid_len)
5032 {
5033         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5034                    MACSTR " dev " MACSTR " op_freq=%d)%s",
5035                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5036                    auto_join ? " (auto_join)" : "");
5037         if (ssid && ssid_len) {
5038                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5039                            wpa_ssid_txt(ssid, ssid_len));
5040         }
5041
5042         wpa_s->p2p_auto_pd = 0;
5043         wpa_s->p2p_auto_join = !!auto_join;
5044         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5045         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5046         wpa_s->pending_join_wps_method = wps_method;
5047
5048         /* Make sure we are not running find during connection establishment */
5049         wpas_p2p_stop_find(wpa_s);
5050
5051         wpa_s->p2p_join_scan_count = 0;
5052         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5053         return 0;
5054 }
5055
5056
5057 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5058                                const u8 *ssid, size_t ssid_len)
5059 {
5060         struct wpa_supplicant *group;
5061         struct p2p_go_neg_results res;
5062         struct wpa_bss *bss;
5063
5064         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5065         if (group == NULL)
5066                 return -1;
5067         if (group != wpa_s) {
5068                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5069                           sizeof(group->p2p_pin));
5070                 group->p2p_wps_method = wpa_s->p2p_wps_method;
5071         } else {
5072                 /*
5073                  * Need to mark the current interface for p2p_group_formation
5074                  * when a separate group interface is not used. This is needed
5075                  * to allow p2p_cancel stop a pending p2p_connect-join.
5076                  * wpas_p2p_init_group_interface() addresses this for the case
5077                  * where a separate group interface is used.
5078                  */
5079                 wpa_s->global->p2p_group_formation = wpa_s;
5080         }
5081
5082         group->p2p_in_provisioning = 1;
5083         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5084
5085         os_memset(&res, 0, sizeof(res));
5086         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5087         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5088                   ETH_ALEN);
5089         res.wps_method = wpa_s->pending_join_wps_method;
5090         if (freq && ssid && ssid_len) {
5091                 res.freq = freq;
5092                 res.ssid_len = ssid_len;
5093                 os_memcpy(res.ssid, ssid, ssid_len);
5094         } else {
5095                 if (ssid && ssid_len) {
5096                         bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
5097                                           ssid, ssid_len);
5098                 } else {
5099                         bss = wpa_bss_get_bssid_latest(
5100                                 wpa_s, wpa_s->pending_join_iface_addr);
5101                 }
5102                 if (bss) {
5103                         res.freq = bss->freq;
5104                         res.ssid_len = bss->ssid_len;
5105                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5106                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5107                                    bss->freq,
5108                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
5109                 } else if (ssid && ssid_len) {
5110                         res.ssid_len = ssid_len;
5111                         os_memcpy(res.ssid, ssid, ssid_len);
5112                         wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)",
5113                                    wpa_ssid_txt(ssid, ssid_len));
5114                 }
5115         }
5116
5117         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5118                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5119                            "starting client");
5120                 wpa_drv_cancel_remain_on_channel(wpa_s);
5121                 wpa_s->off_channel_freq = 0;
5122                 wpa_s->roc_waiting_drv_freq = 0;
5123         }
5124         wpas_start_wps_enrollee(group, &res);
5125
5126         /*
5127          * Allow a longer timeout for join-a-running-group than normal 15
5128          * second group formation timeout since the GO may not have authorized
5129          * our connection yet.
5130          */
5131         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5132         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5133                                wpa_s, NULL);
5134
5135         return 0;
5136 }
5137
5138
5139 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5140                                 int *force_freq, int *pref_freq, int go,
5141                                 unsigned int *pref_freq_list,
5142                                 unsigned int *num_pref_freq)
5143 {
5144         struct wpa_used_freq_data *freqs;
5145         int res, best_freq, num_unused;
5146         unsigned int freq_in_use = 0, num, i, max_pref_freq;
5147
5148         max_pref_freq = *num_pref_freq;
5149         *num_pref_freq = 0;
5150
5151         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5152                           sizeof(struct wpa_used_freq_data));
5153         if (!freqs)
5154                 return -1;
5155
5156         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5157                                         wpa_s->num_multichan_concurrent);
5158
5159         /*
5160          * It is possible that the total number of used frequencies is bigger
5161          * than the number of frequencies used for P2P, so get the system wide
5162          * number of unused frequencies.
5163          */
5164         num_unused = wpas_p2p_num_unused_channels(wpa_s);
5165
5166         wpa_printf(MSG_DEBUG,
5167                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5168                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
5169
5170         if (freq > 0) {
5171                 int ret;
5172                 if (go)
5173                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5174                 else
5175                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5176                 if (!ret) {
5177                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5178                             ieee80211_is_dfs(freq)) {
5179                                 /*
5180                                  * If freq is a DFS channel and DFS is offloaded
5181                                  * to the driver, allow P2P GO to use it.
5182                                  */
5183                                 wpa_printf(MSG_DEBUG,
5184                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5185                                            freq);
5186                         } else {
5187                                 wpa_printf(MSG_DEBUG,
5188                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5189                                            freq);
5190                                 res = -3;
5191                                 goto exit_free;
5192                         }
5193                 }
5194
5195                 for (i = 0; i < num; i++) {
5196                         if (freqs[i].freq == freq)
5197                                 freq_in_use = 1;
5198                 }
5199
5200                 if (num_unused <= 0 && !freq_in_use) {
5201                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5202                                    freq);
5203                         res = -2;
5204                         goto exit_free;
5205                 }
5206                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5207                            "requested channel (%u MHz)", freq);
5208                 *force_freq = freq;
5209                 goto exit_ok;
5210         }
5211
5212         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5213
5214         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5215                 enum wpa_driver_if_type iface_type;
5216
5217                 if (go)
5218                         iface_type = WPA_IF_P2P_GO;
5219                 else
5220                         iface_type = WPA_IF_P2P_CLIENT;
5221
5222                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5223                            best_freq, go);
5224
5225                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5226                                                  &max_pref_freq,
5227                                                  pref_freq_list);
5228                 if (!res && max_pref_freq > 0) {
5229                         *num_pref_freq = max_pref_freq;
5230                         i = 0;
5231                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5232                                                         pref_freq_list[i]) &&
5233                                i < *num_pref_freq) {
5234                                 wpa_printf(MSG_DEBUG,
5235                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5236                                            i, pref_freq_list[i]);
5237                                 i++;
5238                         }
5239                         if (i != *num_pref_freq) {
5240                                 best_freq = pref_freq_list[i];
5241                                 wpa_printf(MSG_DEBUG,
5242                                            "P2P: Using preferred_freq_list[%d]=%d",
5243                                            i, best_freq);
5244                         } else {
5245                                 wpa_printf(MSG_DEBUG,
5246                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5247                                 *num_pref_freq = 0;
5248                         }
5249                 } else {
5250                         wpa_printf(MSG_DEBUG,
5251                                    "P2P: No preferred frequency list available");
5252                 }
5253         }
5254
5255         /* We have a candidate frequency to use */
5256         if (best_freq > 0) {
5257                 if (*pref_freq == 0 && num_unused > 0) {
5258                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5259                                    best_freq);
5260                         *pref_freq = best_freq;
5261                 } else {
5262                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5263                                    best_freq);
5264                         *force_freq = best_freq;
5265                 }
5266         } else if (num_unused > 0) {
5267                 wpa_printf(MSG_DEBUG,
5268                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5269                 *force_freq = 0;
5270         } else {
5271                 wpa_printf(MSG_DEBUG,
5272                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5273                 res = -2;
5274                 goto exit_free;
5275         }
5276
5277 exit_ok:
5278         res = 0;
5279 exit_free:
5280         os_free(freqs);
5281         return res;
5282 }
5283
5284
5285 /**
5286  * wpas_p2p_connect - Request P2P Group Formation to be started
5287  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5288  * @peer_addr: Address of the peer P2P Device
5289  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5290  * @persistent_group: Whether to create a persistent group
5291  * @auto_join: Whether to select join vs. GO Negotiation automatically
5292  * @join: Whether to join an existing group (as a client) instead of starting
5293  *      Group Owner negotiation; @peer_addr is BSSID in that case
5294  * @auth: Whether to only authorize the connection instead of doing that and
5295  *      initiating Group Owner negotiation
5296  * @go_intent: GO Intent or -1 to use default
5297  * @freq: Frequency for the group or 0 for auto-selection
5298  * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5299  * @persistent_id: Persistent group credentials to use for forcing GO
5300  *      parameters or -1 to generate new values (SSID/passphrase)
5301  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5302  *      interoperability workaround when initiating group formation
5303  * @ht40: Start GO with 40 MHz channel width
5304  * @vht:  Start GO with VHT support
5305  * @vht_chwidth: Channel width supported by GO operating with VHT support
5306  *      (VHT_CHANWIDTH_*).
5307  * @group_ssid: Specific Group SSID for join or %NULL if not set
5308  * @group_ssid_len: Length of @group_ssid in octets
5309  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5310  *      failure, -2 on failure due to channel not currently available,
5311  *      -3 if forced channel is not supported
5312  */
5313 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5314                      const char *pin, enum p2p_wps_method wps_method,
5315                      int persistent_group, int auto_join, int join, int auth,
5316                      int go_intent, int freq, unsigned int vht_center_freq2,
5317                      int persistent_id, int pd, int ht40, int vht,
5318                      unsigned int vht_chwidth, const u8 *group_ssid,
5319                      size_t group_ssid_len)
5320 {
5321         int force_freq = 0, pref_freq = 0;
5322         int ret = 0, res;
5323         enum wpa_driver_if_type iftype;
5324         const u8 *if_addr;
5325         struct wpa_ssid *ssid = NULL;
5326         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5327
5328         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5329                 return -1;
5330
5331         if (persistent_id >= 0) {
5332                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5333                 if (ssid == NULL || ssid->disabled != 2 ||
5334                     ssid->mode != WPAS_MODE_P2P_GO)
5335                         return -1;
5336         }
5337
5338         os_free(wpa_s->global->add_psk);
5339         wpa_s->global->add_psk = NULL;
5340
5341         wpa_s->global->p2p_fail_on_wps_complete = 0;
5342         wpa_s->global->pending_p2ps_group = 0;
5343         wpa_s->global->pending_p2ps_group_freq = 0;
5344         wpa_s->p2ps_method_config_any = 0;
5345
5346         if (go_intent < 0)
5347                 go_intent = wpa_s->conf->p2p_go_intent;
5348
5349         if (!auth)
5350                 wpa_s->p2p_long_listen = 0;
5351
5352         wpa_s->p2p_wps_method = wps_method;
5353         wpa_s->p2p_persistent_group = !!persistent_group;
5354         wpa_s->p2p_persistent_id = persistent_id;
5355         wpa_s->p2p_go_intent = go_intent;
5356         wpa_s->p2p_connect_freq = freq;
5357         wpa_s->p2p_fallback_to_go_neg = 0;
5358         wpa_s->p2p_pd_before_go_neg = !!pd;
5359         wpa_s->p2p_go_ht40 = !!ht40;
5360         wpa_s->p2p_go_vht = !!vht;
5361         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5362         wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5363
5364         if (pin)
5365                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5366         else if (wps_method == WPS_PIN_DISPLAY) {
5367                 if (wps_generate_pin((unsigned int *) &ret) < 0)
5368                         return -1;
5369                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5370                                   "%08d", ret);
5371                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5372                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5373                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5374                            wpa_s->p2p_pin);
5375         } else
5376                 wpa_s->p2p_pin[0] = '\0';
5377
5378         if (join || auto_join) {
5379                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5380                 if (auth) {
5381                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5382                                    "connect a running group from " MACSTR,
5383                                    MAC2STR(peer_addr));
5384                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5385                         return ret;
5386                 }
5387                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5388                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5389                                            iface_addr) < 0) {
5390                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5391                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5392                                          dev_addr);
5393                 }
5394                 if (auto_join) {
5395                         os_get_reltime(&wpa_s->p2p_auto_started);
5396                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5397                                    "%ld.%06ld",
5398                                    wpa_s->p2p_auto_started.sec,
5399                                    wpa_s->p2p_auto_started.usec);
5400                 }
5401                 wpa_s->user_initiated_pd = 1;
5402                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5403                                   auto_join, freq,
5404                                   group_ssid, group_ssid_len) < 0)
5405                         return -1;
5406                 return ret;
5407         }
5408
5409         size = P2P_MAX_PREF_CHANNELS;
5410         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5411                                    go_intent == 15, pref_freq_list, &size);
5412         if (res)
5413                 return res;
5414         wpas_p2p_set_own_freq_preference(wpa_s,
5415                                          force_freq ? force_freq : pref_freq);
5416
5417         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5418
5419         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5420
5421         if (wpa_s->create_p2p_iface) {
5422                 /* Prepare to add a new interface for the group */
5423                 iftype = WPA_IF_P2P_GROUP;
5424                 if (go_intent == 15)
5425                         iftype = WPA_IF_P2P_GO;
5426                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5427                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5428                                    "interface for the group");
5429                         return -1;
5430                 }
5431
5432                 if_addr = wpa_s->pending_interface_addr;
5433         } else {
5434                 if (wpa_s->p2p_mgmt)
5435                         if_addr = wpa_s->parent->own_addr;
5436                 else
5437                         if_addr = wpa_s->own_addr;
5438                 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5439         }
5440
5441         if (auth) {
5442                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5443                                          go_intent, if_addr,
5444                                          force_freq, persistent_group, ssid,
5445                                          pref_freq) < 0)
5446                         return -1;
5447                 return ret;
5448         }
5449
5450         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5451                                   go_intent, if_addr, force_freq,
5452                                   persistent_group, ssid, pref_freq) < 0) {
5453                 if (wpa_s->create_p2p_iface)
5454                         wpas_p2p_remove_pending_group_interface(wpa_s);
5455                 return -1;
5456         }
5457         return ret;
5458 }
5459
5460
5461 /**
5462  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5463  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5464  * @freq: Frequency of the channel in MHz
5465  * @duration: Duration of the stay on the channel in milliseconds
5466  *
5467  * This callback is called when the driver indicates that it has started the
5468  * requested remain-on-channel duration.
5469  */
5470 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5471                                    unsigned int freq, unsigned int duration)
5472 {
5473         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5474                 return;
5475         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)",
5476                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5477                    wpa_s->roc_waiting_drv_freq, freq, duration);
5478         if (wpa_s->off_channel_freq &&
5479             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5480                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5481                               wpa_s->pending_listen_duration);
5482                 wpa_s->pending_listen_freq = 0;
5483         } else {
5484                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5485                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5486                            freq, duration);
5487         }
5488 }
5489
5490
5491 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5492 {
5493         /* Limit maximum Listen state time based on driver limitation. */
5494         if (timeout > wpa_s->max_remain_on_chan)
5495                 timeout = wpa_s->max_remain_on_chan;
5496
5497         return p2p_listen(wpa_s->global->p2p, timeout);
5498 }
5499
5500
5501 /**
5502  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5503  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5504  * @freq: Frequency of the channel in MHz
5505  *
5506  * This callback is called when the driver indicates that a remain-on-channel
5507  * operation has been completed, i.e., the duration on the requested channel
5508  * has timed out.
5509  */
5510 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5511                                           unsigned int freq)
5512 {
5513         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5514                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5515                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5516         wpas_p2p_listen_work_done(wpa_s);
5517         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5518                 return;
5519         if (wpa_s->p2p_long_listen > 0)
5520                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5521         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5522                 return; /* P2P module started a new operation */
5523         if (offchannel_pending_action_tx(wpa_s))
5524                 return;
5525         if (wpa_s->p2p_long_listen > 0) {
5526                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5527                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5528         } else {
5529                 /*
5530                  * When listen duration is over, stop listen & update p2p_state
5531                  * to IDLE.
5532                  */
5533                 p2p_stop_listen(wpa_s->global->p2p);
5534         }
5535 }
5536
5537
5538 /**
5539  * wpas_p2p_group_remove - Remove a P2P group
5540  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5541  * @ifname: Network interface name of the group interface or "*" to remove all
5542  *      groups
5543  * Returns: 0 on success, -1 on failure
5544  *
5545  * This function is used to remove a P2P group. This can be used to disconnect
5546  * from a group in which the local end is a P2P Client or to end a P2P Group in
5547  * case the local end is the Group Owner. If a virtual network interface was
5548  * created for this group, that interface will be removed. Otherwise, only the
5549  * configured P2P group network will be removed from the interface.
5550  */
5551 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5552 {
5553         struct wpa_global *global = wpa_s->global;
5554         struct wpa_supplicant *calling_wpa_s = wpa_s;
5555
5556         if (os_strcmp(ifname, "*") == 0) {
5557                 struct wpa_supplicant *prev;
5558                 wpa_s = global->ifaces;
5559                 while (wpa_s) {
5560                         prev = wpa_s;
5561                         wpa_s = wpa_s->next;
5562                         if (prev->p2p_group_interface !=
5563                             NOT_P2P_GROUP_INTERFACE ||
5564                             (prev->current_ssid &&
5565                              prev->current_ssid->p2p_group))
5566                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5567                 }
5568                 return 0;
5569         }
5570
5571         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5572                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5573                         break;
5574         }
5575
5576         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5577 }
5578
5579
5580 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5581 {
5582         unsigned int r;
5583
5584         if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5585                 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5586                 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5587                 int res;
5588
5589                 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5590                                                  &size, pref_freq_list);
5591                 if (!res && size > 0) {
5592                         i = 0;
5593                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5594                                                         pref_freq_list[i]) &&
5595                                i < size) {
5596                                 wpa_printf(MSG_DEBUG,
5597                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5598                                            i, pref_freq_list[i]);
5599                                 i++;
5600                         }
5601                         if (i != size) {
5602                                 freq = pref_freq_list[i];
5603                                 wpa_printf(MSG_DEBUG,
5604                                            "P2P: Using preferred_freq_list[%d]=%d",
5605                                            i, freq);
5606                         } else {
5607                                 wpa_printf(MSG_DEBUG,
5608                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5609                         }
5610                 } else {
5611                         wpa_printf(MSG_DEBUG,
5612                                    "P2P: No preferred frequency list available");
5613                 }
5614         }
5615
5616         if (freq == 2) {
5617                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5618                            "band");
5619                 if (wpa_s->best_24_freq > 0 &&
5620                     p2p_supported_freq_go(wpa_s->global->p2p,
5621                                           wpa_s->best_24_freq)) {
5622                         freq = wpa_s->best_24_freq;
5623                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5624                                    "channel: %d MHz", freq);
5625                 } else {
5626                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5627                                 return -1;
5628                         freq = 2412 + (r % 3) * 25;
5629                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5630                                    "channel: %d MHz", freq);
5631                 }
5632         }
5633
5634         if (freq == 5) {
5635                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5636                            "band");
5637                 if (wpa_s->best_5_freq > 0 &&
5638                     p2p_supported_freq_go(wpa_s->global->p2p,
5639                                        wpa_s->best_5_freq)) {
5640                         freq = wpa_s->best_5_freq;
5641                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5642                                    "channel: %d MHz", freq);
5643                 } else {
5644                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5645                                 return -1;
5646                         freq = 5180 + (r % 4) * 20;
5647                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5648                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5649                                            "5 GHz channel for P2P group");
5650                                 return -1;
5651                         }
5652                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5653                                    "channel: %d MHz", freq);
5654                 }
5655         }
5656
5657         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5658                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5659                     ieee80211_is_dfs(freq)) {
5660                         /*
5661                          * If freq is a DFS channel and DFS is offloaded to the
5662                          * driver, allow P2P GO to use it.
5663                          */
5664                         wpa_printf(MSG_DEBUG, "P2P: "
5665                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5666                                    __func__, freq);
5667                         return freq;
5668                 }
5669                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5670                            "(%u MHz) is not supported for P2P uses",
5671                            freq);
5672                 return -1;
5673         }
5674
5675         return freq;
5676 }
5677
5678
5679 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5680                                       const struct p2p_channels *channels,
5681                                       int freq)
5682 {
5683         if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5684             p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5685             freq_included(wpa_s, channels, freq))
5686                 return 1;
5687         return 0;
5688 }
5689
5690
5691 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5692                                             struct p2p_go_neg_results *params,
5693                                             const struct p2p_channels *channels)
5694 {
5695         unsigned int i, r;
5696
5697         /* first try some random selection of the social channels */
5698         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5699                 return;
5700
5701         for (i = 0; i < 3; i++) {
5702                 params->freq = 2412 + ((r + i) % 3) * 25;
5703                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5704                         goto out;
5705         }
5706
5707         /* try all other channels in operating class 81 */
5708         for (i = 0; i < 11; i++) {
5709                 params->freq = 2412 + i * 5;
5710
5711                 /* skip social channels; covered in the previous loop */
5712                 if (params->freq == 2412 ||
5713                     params->freq == 2437 ||
5714                     params->freq == 2462)
5715                         continue;
5716
5717                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5718                         goto out;
5719         }
5720
5721         /* try all channels in operating class 115 */
5722         for (i = 0; i < 4; i++) {
5723                 params->freq = 5180 + i * 20;
5724                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5725                     freq_included(wpa_s, channels, params->freq) &&
5726                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5727                         goto out;
5728         }
5729
5730         /* try all channels in operating class 124 */
5731         for (i = 0; i < 4; i++) {
5732                 params->freq = 5745 + i * 20;
5733                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5734                     freq_included(wpa_s, channels, params->freq) &&
5735                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5736                         goto out;
5737         }
5738
5739         /* try social channel class 180 channel 2 */
5740         params->freq = 58320 + 1 * 2160;
5741         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5742             freq_included(wpa_s, channels, params->freq) &&
5743             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5744                 goto out;
5745
5746         /* try all channels in reg. class 180 */
5747         for (i = 0; i < 4; i++) {
5748                 params->freq = 58320 + i * 2160;
5749                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5750                     freq_included(wpa_s, channels, params->freq) &&
5751                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5752                         goto out;
5753         }
5754
5755         params->freq = 0;
5756         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5757         return;
5758 out:
5759         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5760                    params->freq);
5761 }
5762
5763
5764 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5765                                    struct p2p_go_neg_results *params,
5766                                    int freq, int vht_center_freq2, int ht40,
5767                                    int vht, int max_oper_chwidth,
5768                                    const struct p2p_channels *channels)
5769 {
5770         struct wpa_used_freq_data *freqs;
5771         unsigned int cand;
5772         unsigned int num, i;
5773         int ignore_no_freqs = 0;
5774         int unused_channels = wpas_p2p_num_unused_channels(wpa_s) > 0;
5775
5776         os_memset(params, 0, sizeof(*params));
5777         params->role_go = 1;
5778         params->ht40 = ht40;
5779         params->vht = vht;
5780         params->max_oper_chwidth = max_oper_chwidth;
5781         params->vht_center_freq2 = vht_center_freq2;
5782
5783         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5784                           sizeof(struct wpa_used_freq_data));
5785         if (!freqs)
5786                 return -1;
5787
5788         num = get_shared_radio_freqs_data(wpa_s, freqs,
5789                                           wpa_s->num_multichan_concurrent);
5790
5791         if (wpa_s->current_ssid &&
5792             wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5793             wpa_s->wpa_state == WPA_COMPLETED) {
5794                 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5795                            __func__);
5796
5797                 /*
5798                  * If the frequency selection is done for an active P2P GO that
5799                  * is not sharing a frequency, allow to select a new frequency
5800                  * even if there are no unused frequencies as we are about to
5801                  * move the P2P GO so its frequency can be re-used.
5802                  */
5803                 for (i = 0; i < num; i++) {
5804                         if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5805                             freqs[i].flags == 0) {
5806                                 ignore_no_freqs = 1;
5807                                 break;
5808                         }
5809                 }
5810         }
5811
5812         /* try using the forced freq */
5813         if (freq) {
5814                 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) {
5815                         wpa_printf(MSG_DEBUG,
5816                                    "P2P: Forced GO freq %d MHz not accepted",
5817                                    freq);
5818                         goto fail;
5819                 }
5820
5821                 for (i = 0; i < num; i++) {
5822                         if (freqs[i].freq == freq) {
5823                                 wpa_printf(MSG_DEBUG,
5824                                            "P2P: forced freq (%d MHz) is also shared",
5825                                            freq);
5826                                 params->freq = freq;
5827                                 goto success;
5828                         }
5829                 }
5830
5831                 if (!ignore_no_freqs && !unused_channels) {
5832                         wpa_printf(MSG_DEBUG,
5833                                    "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5834                                    freq);
5835                         goto fail;
5836                 }
5837
5838                 wpa_printf(MSG_DEBUG,
5839                            "P2P: force GO freq (%d MHz) on a free channel",
5840                            freq);
5841                 params->freq = freq;
5842                 goto success;
5843         }
5844
5845         /* consider using one of the shared frequencies */
5846         if (num &&
5847             (!wpa_s->conf->p2p_ignore_shared_freq || !unused_channels)) {
5848                 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5849                 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5850                         wpa_printf(MSG_DEBUG,
5851                                    "P2P: Use shared freq (%d MHz) for GO",
5852                                    cand);
5853                         params->freq = cand;
5854                         goto success;
5855                 }
5856
5857                 /* try using one of the shared freqs */
5858                 for (i = 0; i < num; i++) {
5859                         if (wpas_p2p_supported_freq_go(wpa_s, channels,
5860                                                        freqs[i].freq)) {
5861                                 wpa_printf(MSG_DEBUG,
5862                                            "P2P: Use shared freq (%d MHz) for GO",
5863                                            freqs[i].freq);
5864                                 params->freq = freqs[i].freq;
5865                                 goto success;
5866                         }
5867                 }
5868         }
5869
5870         if (!ignore_no_freqs && !unused_channels) {
5871                 wpa_printf(MSG_DEBUG,
5872                            "P2P: Cannot force GO on any of the channels we are already using");
5873                 goto fail;
5874         }
5875
5876         /* try using the setting from the configuration file */
5877         if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5878             wpa_s->conf->p2p_oper_channel >= 1 &&
5879             wpa_s->conf->p2p_oper_channel <= 11 &&
5880             wpas_p2p_supported_freq_go(
5881                     wpa_s, channels,
5882                     2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5883                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5884                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5885                            "frequency %d MHz", params->freq);
5886                 goto success;
5887         }
5888
5889         if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5890              wpa_s->conf->p2p_oper_reg_class == 116 ||
5891              wpa_s->conf->p2p_oper_reg_class == 117 ||
5892              wpa_s->conf->p2p_oper_reg_class == 124 ||
5893              wpa_s->conf->p2p_oper_reg_class == 125 ||
5894              wpa_s->conf->p2p_oper_reg_class == 126 ||
5895              wpa_s->conf->p2p_oper_reg_class == 127) &&
5896             wpas_p2p_supported_freq_go(wpa_s, channels,
5897                                        5000 +
5898                                        5 * wpa_s->conf->p2p_oper_channel)) {
5899                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5900                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5901                            "frequency %d MHz", params->freq);
5902                 goto success;
5903         }
5904
5905         /* Try using best channels */
5906         if (wpa_s->conf->p2p_oper_channel == 0 &&
5907             wpa_s->best_overall_freq > 0 &&
5908             wpas_p2p_supported_freq_go(wpa_s, channels,
5909                                        wpa_s->best_overall_freq)) {
5910                 params->freq = wpa_s->best_overall_freq;
5911                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5912                            "channel %d MHz", params->freq);
5913                 goto success;
5914         }
5915
5916         if (wpa_s->conf->p2p_oper_channel == 0 &&
5917             wpa_s->best_24_freq > 0 &&
5918             wpas_p2p_supported_freq_go(wpa_s, channels,
5919                                        wpa_s->best_24_freq)) {
5920                 params->freq = wpa_s->best_24_freq;
5921                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5922                            "channel %d MHz", params->freq);
5923                 goto success;
5924         }
5925
5926         if (wpa_s->conf->p2p_oper_channel == 0 &&
5927             wpa_s->best_5_freq > 0 &&
5928             wpas_p2p_supported_freq_go(wpa_s, channels,
5929                                        wpa_s->best_5_freq)) {
5930                 params->freq = wpa_s->best_5_freq;
5931                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5932                            "channel %d MHz", params->freq);
5933                 goto success;
5934         }
5935
5936         /* try using preferred channels */
5937         cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
5938         if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5939                 params->freq = cand;
5940                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5941                            "channels", params->freq);
5942                 goto success;
5943         }
5944
5945         /* Try using one of the group common freqs */
5946         if (wpa_s->p2p_group_common_freqs) {
5947                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
5948                         cand = wpa_s->p2p_group_common_freqs[i];
5949                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5950                                 params->freq = cand;
5951                                 wpa_printf(MSG_DEBUG,
5952                                            "P2P: Use freq %d MHz common with the peer",
5953                                            params->freq);
5954                                 goto success;
5955                         }
5956                 }
5957         }
5958
5959         /* no preference, select some channel */
5960         wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
5961
5962         if (params->freq == 0) {
5963                 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
5964                 goto fail;
5965         }
5966
5967 success:
5968         os_free(freqs);
5969         return 0;
5970 fail:
5971         os_free(freqs);
5972         return -1;
5973 }
5974
5975
5976 static struct wpa_supplicant *
5977 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5978                          int go)
5979 {
5980         struct wpa_supplicant *group_wpa_s;
5981
5982         if (!wpas_p2p_create_iface(wpa_s)) {
5983                 if (wpa_s->p2p_mgmt) {
5984                         /*
5985                          * We may be called on the p2p_dev interface which
5986                          * cannot be used for group operations, so always use
5987                          * the primary interface.
5988                          */
5989                         wpa_s->parent->p2pdev = wpa_s;
5990                         wpa_s = wpa_s->parent;
5991                 }
5992                 wpa_dbg(wpa_s, MSG_DEBUG,
5993                         "P2P: Use primary interface for group operations");
5994                 wpa_s->p2p_first_connection_timeout = 0;
5995                 if (wpa_s != wpa_s->p2pdev)
5996                         wpas_p2p_clone_config_dh(wpa_s, wpa_s->p2pdev);
5997                 return wpa_s;
5998         }
5999
6000         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
6001                                          WPA_IF_P2P_CLIENT) < 0) {
6002                 wpa_msg_global(wpa_s, MSG_ERROR,
6003                                "P2P: Failed to add group interface");
6004                 return NULL;
6005         }
6006         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
6007         if (group_wpa_s == NULL) {
6008                 wpa_msg_global(wpa_s, MSG_ERROR,
6009                                "P2P: Failed to initialize group interface");
6010                 wpas_p2p_remove_pending_group_interface(wpa_s);
6011                 return NULL;
6012         }
6013
6014         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
6015                 group_wpa_s->ifname);
6016         group_wpa_s->p2p_first_connection_timeout = 0;
6017         return group_wpa_s;
6018 }
6019
6020
6021 /**
6022  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
6023  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
6024  * @persistent_group: Whether to create a persistent group
6025  * @freq: Frequency for the group or 0 to indicate no hardcoding
6026  * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80
6027  * @ht40: Start GO with 40 MHz channel width
6028  * @vht:  Start GO with VHT support
6029  * @vht_chwidth: channel bandwidth for GO operating with VHT support
6030  * Returns: 0 on success, -1 on failure
6031  *
6032  * This function creates a new P2P group with the local end as the Group Owner,
6033  * i.e., without using Group Owner Negotiation.
6034  */
6035 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
6036                        int freq, int vht_center_freq2, int ht40, int vht,
6037                        int max_oper_chwidth)
6038 {
6039         struct p2p_go_neg_results params;
6040
6041         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6042                 return -1;
6043
6044         os_free(wpa_s->global->add_psk);
6045         wpa_s->global->add_psk = NULL;
6046
6047         /* Make sure we are not running find during connection establishment */
6048         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6049         wpas_p2p_stop_find_oper(wpa_s);
6050
6051         freq = wpas_p2p_select_go_freq(wpa_s, freq);
6052         if (freq < 0)
6053                 return -1;
6054
6055         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6056                                     ht40, vht, max_oper_chwidth, NULL))
6057                 return -1;
6058         if (params.freq &&
6059             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
6060                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
6061                     ieee80211_is_dfs(params.freq)) {
6062                         /*
6063                          * If freq is a DFS channel and DFS is offloaded to the
6064                          * driver, allow P2P GO to use it.
6065                          */
6066                         wpa_printf(MSG_DEBUG,
6067                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
6068                                 __func__, params.freq);
6069                 } else {
6070                         wpa_printf(MSG_DEBUG,
6071                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
6072                                    params.freq);
6073                         return -1;
6074                 }
6075         }
6076         p2p_go_params(wpa_s->global->p2p, &params);
6077         params.persistent_group = persistent_group;
6078
6079         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6080         if (wpa_s == NULL)
6081                 return -1;
6082         wpas_start_wps_go(wpa_s, &params, 0);
6083
6084         return 0;
6085 }
6086
6087
6088 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6089                                  struct wpa_ssid *params, int addr_allocated,
6090                                  int freq, int force_scan)
6091 {
6092         struct wpa_ssid *ssid;
6093
6094         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6095         if (wpa_s == NULL)
6096                 return -1;
6097         if (force_scan)
6098                 os_get_reltime(&wpa_s->scan_min_time);
6099         wpa_s->p2p_last_4way_hs_fail = NULL;
6100
6101         wpa_supplicant_ap_deinit(wpa_s);
6102
6103         ssid = wpa_config_add_network(wpa_s->conf);
6104         if (ssid == NULL)
6105                 return -1;
6106         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
6107         wpa_config_set_network_defaults(ssid);
6108         ssid->temporary = 1;
6109         ssid->proto = WPA_PROTO_RSN;
6110         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
6111         ssid->group_cipher = WPA_CIPHER_CCMP;
6112         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6113         ssid->ssid = os_malloc(params->ssid_len);
6114         if (ssid->ssid == NULL) {
6115                 wpa_config_remove_network(wpa_s->conf, ssid->id);
6116                 return -1;
6117         }
6118         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6119         ssid->ssid_len = params->ssid_len;
6120         ssid->p2p_group = 1;
6121         ssid->export_keys = 1;
6122         if (params->psk_set) {
6123                 os_memcpy(ssid->psk, params->psk, 32);
6124                 ssid->psk_set = 1;
6125         }
6126         if (params->passphrase)
6127                 ssid->passphrase = os_strdup(params->passphrase);
6128
6129         wpa_s->show_group_started = 1;
6130         wpa_s->p2p_in_invitation = 1;
6131         wpa_s->p2p_invite_go_freq = freq;
6132         wpa_s->p2p_go_group_formation_completed = 0;
6133         wpa_s->global->p2p_group_formation = wpa_s;
6134
6135         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6136                              NULL);
6137         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6138                                wpas_p2p_group_formation_timeout,
6139                                wpa_s->p2pdev, NULL);
6140         wpa_supplicant_select_network(wpa_s, ssid);
6141
6142         return 0;
6143 }
6144
6145
6146 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6147                                   struct wpa_ssid *ssid, int addr_allocated,
6148                                   int force_freq, int neg_freq,
6149                                   int vht_center_freq2, int ht40,
6150                                   int vht, int max_oper_chwidth,
6151                                   const struct p2p_channels *channels,
6152                                   int connection_timeout, int force_scan)
6153 {
6154         struct p2p_go_neg_results params;
6155         int go = 0, freq;
6156
6157         if (ssid->disabled != 2 || ssid->ssid == NULL)
6158                 return -1;
6159
6160         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6161             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6162                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6163                            "already running");
6164                 if (go == 0 &&
6165                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6166                                          wpa_s->p2pdev, NULL)) {
6167                         /*
6168                          * This can happen if Invitation Response frame was lost
6169                          * and the peer (GO of a persistent group) tries to
6170                          * invite us again. Reschedule the timeout to avoid
6171                          * terminating the wait for the connection too early
6172                          * since we now know that the peer is still trying to
6173                          * invite us instead of having already started the GO.
6174                          */
6175                         wpa_printf(MSG_DEBUG,
6176                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6177                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6178                                                wpas_p2p_group_formation_timeout,
6179                                                wpa_s->p2pdev, NULL);
6180                 }
6181                 return 0;
6182         }
6183
6184         os_free(wpa_s->global->add_psk);
6185         wpa_s->global->add_psk = NULL;
6186
6187         /* Make sure we are not running find during connection establishment */
6188         wpas_p2p_stop_find_oper(wpa_s);
6189
6190         wpa_s->p2p_fallback_to_go_neg = 0;
6191
6192         if (ssid->mode == WPAS_MODE_P2P_GO) {
6193                 if (force_freq > 0) {
6194                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6195                         if (freq < 0)
6196                                 return -1;
6197                 } else {
6198                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6199                         if (freq < 0 ||
6200                             (freq > 0 && !freq_included(wpa_s, channels, freq)))
6201                                 freq = 0;
6202                 }
6203         } else if (ssid->mode == WPAS_MODE_INFRA) {
6204                 freq = neg_freq;
6205                 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6206                         struct os_reltime now;
6207                         struct wpa_bss *bss =
6208                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6209
6210                         os_get_reltime(&now);
6211                         if (bss &&
6212                             !os_reltime_expired(&now, &bss->last_update, 5) &&
6213                             freq_included(wpa_s, channels, bss->freq))
6214                                 freq = bss->freq;
6215                         else
6216                                 freq = 0;
6217                 }
6218
6219                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6220                                              force_scan);
6221         } else {
6222                 return -1;
6223         }
6224
6225         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6226                                     ht40, vht, max_oper_chwidth, channels))
6227                 return -1;
6228
6229         params.role_go = 1;
6230         params.psk_set = ssid->psk_set;
6231         if (params.psk_set)
6232                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6233         if (ssid->passphrase) {
6234                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6235                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6236                                    "persistent group");
6237                         return -1;
6238                 }
6239                 os_strlcpy(params.passphrase, ssid->passphrase,
6240                            sizeof(params.passphrase));
6241         }
6242         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6243         params.ssid_len = ssid->ssid_len;
6244         params.persistent_group = 1;
6245
6246         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6247         if (wpa_s == NULL)
6248                 return -1;
6249
6250         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6251
6252         wpa_s->p2p_first_connection_timeout = connection_timeout;
6253         wpas_start_wps_go(wpa_s, &params, 0);
6254
6255         return 0;
6256 }
6257
6258
6259 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6260                                struct wpabuf *proberesp_ies)
6261 {
6262         struct wpa_supplicant *wpa_s = ctx;
6263         if (wpa_s->ap_iface) {
6264                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6265                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6266                         wpabuf_free(beacon_ies);
6267                         wpabuf_free(proberesp_ies);
6268                         return;
6269                 }
6270                 if (beacon_ies) {
6271                         wpabuf_free(hapd->p2p_beacon_ie);
6272                         hapd->p2p_beacon_ie = beacon_ies;
6273                 }
6274                 wpabuf_free(hapd->p2p_probe_resp_ie);
6275                 hapd->p2p_probe_resp_ie = proberesp_ies;
6276         } else {
6277                 wpabuf_free(beacon_ies);
6278                 wpabuf_free(proberesp_ies);
6279         }
6280         wpa_supplicant_ap_update_beacon(wpa_s);
6281 }
6282
6283
6284 static void wpas_p2p_idle_update(void *ctx, int idle)
6285 {
6286         struct wpa_supplicant *wpa_s = ctx;
6287         if (!wpa_s->ap_iface)
6288                 return;
6289         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6290         if (idle) {
6291                 if (wpa_s->global->p2p_fail_on_wps_complete &&
6292                     wpa_s->p2p_in_provisioning) {
6293                         wpas_p2p_grpform_fail_after_wps(wpa_s);
6294                         return;
6295                 }
6296                 wpas_p2p_set_group_idle_timeout(wpa_s);
6297         } else
6298                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6299 }
6300
6301
6302 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6303                                        struct wpa_ssid *ssid)
6304 {
6305         struct p2p_group *group;
6306         struct p2p_group_config *cfg;
6307
6308         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6309                 return NULL;
6310
6311         cfg = os_zalloc(sizeof(*cfg));
6312         if (cfg == NULL)
6313                 return NULL;
6314
6315         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6316                 cfg->persistent_group = 2;
6317         else if (ssid->p2p_persistent_group)
6318                 cfg->persistent_group = 1;
6319         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6320         if (wpa_s->max_stations &&
6321             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6322                 cfg->max_clients = wpa_s->max_stations;
6323         else
6324                 cfg->max_clients = wpa_s->conf->max_num_sta;
6325         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6326         cfg->ssid_len = ssid->ssid_len;
6327         cfg->freq = ssid->frequency;
6328         cfg->cb_ctx = wpa_s;
6329         cfg->ie_update = wpas_p2p_ie_update;
6330         cfg->idle_update = wpas_p2p_idle_update;
6331         cfg->ip_addr_alloc = WPA_GET_BE32(wpa_s->p2pdev->conf->ip_addr_start)
6332                 != 0;
6333
6334         group = p2p_group_init(wpa_s->global->p2p, cfg);
6335         if (group == NULL)
6336                 os_free(cfg);
6337         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6338                 p2p_group_notif_formation_done(group);
6339         wpa_s->p2p_group = group;
6340         return group;
6341 }
6342
6343
6344 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6345                           int registrar)
6346 {
6347         struct wpa_ssid *ssid = wpa_s->current_ssid;
6348
6349         if (!wpa_s->p2p_in_provisioning) {
6350                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6351                            "provisioning not in progress");
6352                 return;
6353         }
6354
6355         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6356                 u8 go_dev_addr[ETH_ALEN];
6357                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6358                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6359                                           ssid->ssid_len);
6360                 /* Clear any stored provisioning info */
6361                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6362         }
6363
6364         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6365                              NULL);
6366         wpa_s->p2p_go_group_formation_completed = 1;
6367         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6368                 /*
6369                  * Use a separate timeout for initial data connection to
6370                  * complete to allow the group to be removed automatically if
6371                  * something goes wrong in this step before the P2P group idle
6372                  * timeout mechanism is taken into use.
6373                  */
6374                 wpa_dbg(wpa_s, MSG_DEBUG,
6375                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6376                         P2P_MAX_INITIAL_CONN_WAIT);
6377                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6378                                        wpas_p2p_group_formation_timeout,
6379                                        wpa_s->p2pdev, NULL);
6380                 /* Complete group formation on successful data connection. */
6381                 wpa_s->p2p_go_group_formation_completed = 0;
6382         } else if (ssid) {
6383                 /*
6384                  * Use a separate timeout for initial data connection to
6385                  * complete to allow the group to be removed automatically if
6386                  * the client does not complete data connection successfully.
6387                  */
6388                 wpa_dbg(wpa_s, MSG_DEBUG,
6389                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6390                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6391                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6392                                        wpas_p2p_group_formation_timeout,
6393                                        wpa_s->p2pdev, NULL);
6394                 /*
6395                  * Complete group formation on first successful data connection
6396                  */
6397                 wpa_s->p2p_go_group_formation_completed = 0;
6398         }
6399         if (wpa_s->global->p2p)
6400                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6401         wpas_group_formation_completed(wpa_s, 1, 0);
6402 }
6403
6404
6405 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6406                          struct wps_event_fail *fail)
6407 {
6408         if (!wpa_s->p2p_in_provisioning) {
6409                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6410                            "provisioning not in progress");
6411                 return;
6412         }
6413
6414         if (wpa_s->go_params) {
6415                 p2p_clear_provisioning_info(
6416                         wpa_s->global->p2p,
6417                         wpa_s->go_params->peer_device_addr);
6418         }
6419
6420         wpas_notify_p2p_wps_failed(wpa_s, fail);
6421
6422         if (wpa_s == wpa_s->global->p2p_group_formation) {
6423                 /*
6424                  * Allow some time for the failed WPS negotiation exchange to
6425                  * complete, but remove the group since group formation cannot
6426                  * succeed after provisioning failure.
6427                  */
6428                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6429                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6430                 eloop_deplete_timeout(0, 50000,
6431                                       wpas_p2p_group_formation_timeout,
6432                                       wpa_s->p2pdev, NULL);
6433         }
6434 }
6435
6436
6437 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6438 {
6439         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6440             !wpa_s->p2p_in_provisioning)
6441                 return 0;
6442
6443         wpas_p2p_grpform_fail_after_wps(wpa_s);
6444
6445         return 1;
6446 }
6447
6448
6449 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6450                        const char *config_method,
6451                        enum wpas_p2p_prov_disc_use use,
6452                        struct p2ps_provision *p2ps_prov)
6453 {
6454         u16 config_methods;
6455
6456         wpa_s->global->pending_p2ps_group = 0;
6457         wpa_s->global->pending_p2ps_group_freq = 0;
6458         wpa_s->p2p_fallback_to_go_neg = 0;
6459         wpa_s->pending_pd_use = NORMAL_PD;
6460         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6461                 p2ps_prov->conncap = p2ps_group_capability(
6462                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6463                         &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6464
6465                 wpa_printf(MSG_DEBUG,
6466                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6467                            __func__, p2ps_prov->conncap,
6468                            p2ps_prov->adv_id, p2ps_prov->conncap,
6469                            p2ps_prov->status, p2ps_prov->info);
6470
6471                 config_methods = 0;
6472         } else if (os_strncmp(config_method, "display", 7) == 0)
6473                 config_methods = WPS_CONFIG_DISPLAY;
6474         else if (os_strncmp(config_method, "keypad", 6) == 0)
6475                 config_methods = WPS_CONFIG_KEYPAD;
6476         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6477                  os_strncmp(config_method, "pushbutton", 10) == 0)
6478                 config_methods = WPS_CONFIG_PUSHBUTTON;
6479         else {
6480                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6481                 os_free(p2ps_prov);
6482                 return -1;
6483         }
6484
6485         if (use == WPAS_P2P_PD_AUTO) {
6486                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6487                 wpa_s->pending_pd_config_methods = config_methods;
6488                 wpa_s->p2p_auto_pd = 1;
6489                 wpa_s->p2p_auto_join = 0;
6490                 wpa_s->pending_pd_before_join = 0;
6491                 wpa_s->auto_pd_scan_retry = 0;
6492                 wpas_p2p_stop_find(wpa_s);
6493                 wpa_s->p2p_join_scan_count = 0;
6494                 os_get_reltime(&wpa_s->p2p_auto_started);
6495                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6496                            wpa_s->p2p_auto_started.sec,
6497                            wpa_s->p2p_auto_started.usec);
6498                 wpas_p2p_join_scan(wpa_s, NULL);
6499                 return 0;
6500         }
6501
6502         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6503                 os_free(p2ps_prov);
6504                 return -1;
6505         }
6506
6507         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6508                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6509                                  0, 1);
6510 }
6511
6512
6513 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6514                               char *end)
6515 {
6516         return p2p_scan_result_text(ies, ies_len, buf, end);
6517 }
6518
6519
6520 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6521 {
6522         if (!offchannel_pending_action_tx(wpa_s))
6523                 return;
6524
6525         if (wpa_s->p2p_send_action_work) {
6526                 wpas_p2p_free_send_action_work(wpa_s);
6527                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
6528                                      wpa_s, NULL);
6529                 offchannel_send_action_done(wpa_s);
6530         }
6531
6532         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6533                    "operation request");
6534         offchannel_clear_pending_action_tx(wpa_s);
6535 }
6536
6537
6538 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6539                   enum p2p_discovery_type type,
6540                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6541                   const u8 *dev_id, unsigned int search_delay,
6542                   u8 seek_cnt, const char **seek_string, int freq)
6543 {
6544         wpas_p2p_clear_pending_action_tx(wpa_s);
6545         wpa_s->p2p_long_listen = 0;
6546
6547         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6548             wpa_s->p2p_in_provisioning)
6549                 return -1;
6550
6551         wpa_supplicant_cancel_sched_scan(wpa_s);
6552
6553         return p2p_find(wpa_s->global->p2p, timeout, type,
6554                         num_req_dev_types, req_dev_types, dev_id,
6555                         search_delay, seek_cnt, seek_string, freq);
6556 }
6557
6558
6559 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6560                                             struct wpa_scan_results *scan_res)
6561 {
6562         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6563
6564         if (wpa_s->p2p_scan_work) {
6565                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6566                 wpa_s->p2p_scan_work = NULL;
6567                 radio_work_done(work);
6568         }
6569
6570         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6571                 return;
6572
6573         /*
6574          * Indicate that results have been processed so that the P2P module can
6575          * continue pending tasks.
6576          */
6577         p2p_scan_res_handled(wpa_s->global->p2p);
6578 }
6579
6580
6581 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6582 {
6583         wpas_p2p_clear_pending_action_tx(wpa_s);
6584         wpa_s->p2p_long_listen = 0;
6585         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6586         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6587
6588         if (wpa_s->global->p2p)
6589                 p2p_stop_find(wpa_s->global->p2p);
6590
6591         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6592                 wpa_printf(MSG_DEBUG,
6593                            "P2P: Do not consider the scan results after stop_find");
6594                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6595         }
6596 }
6597
6598
6599 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6600 {
6601         wpas_p2p_stop_find_oper(wpa_s);
6602         if (!wpa_s->global->pending_group_iface_for_p2ps)
6603                 wpas_p2p_remove_pending_group_interface(wpa_s);
6604 }
6605
6606
6607 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6608 {
6609         struct wpa_supplicant *wpa_s = eloop_ctx;
6610         wpa_s->p2p_long_listen = 0;
6611 }
6612
6613
6614 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6615 {
6616         int res;
6617
6618         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6619                 return -1;
6620
6621         wpa_supplicant_cancel_sched_scan(wpa_s);
6622         wpas_p2p_clear_pending_action_tx(wpa_s);
6623
6624         if (timeout == 0) {
6625                 /*
6626                  * This is a request for unlimited Listen state. However, at
6627                  * least for now, this is mapped to a Listen state for one
6628                  * hour.
6629                  */
6630                 timeout = 3600;
6631         }
6632         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6633         wpa_s->p2p_long_listen = 0;
6634
6635         /*
6636          * Stop previous find/listen operation to avoid trying to request a new
6637          * remain-on-channel operation while the driver is still running the
6638          * previous one.
6639          */
6640         if (wpa_s->global->p2p)
6641                 p2p_stop_find(wpa_s->global->p2p);
6642
6643         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6644         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6645                 wpa_s->p2p_long_listen = timeout * 1000;
6646                 eloop_register_timeout(timeout, 0,
6647                                        wpas_p2p_long_listen_timeout,
6648                                        wpa_s, NULL);
6649         }
6650
6651         return res;
6652 }
6653
6654
6655 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6656                           u8 *buf, size_t len, int p2p_group)
6657 {
6658         struct wpabuf *p2p_ie;
6659         int ret;
6660
6661         if (wpa_s->global->p2p_disabled)
6662                 return -1;
6663         /*
6664          * Advertize mandatory cross connection capability even on
6665          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6666          */
6667         if (wpa_s->conf->p2p_disabled && p2p_group)
6668                 return -1;
6669         if (wpa_s->global->p2p == NULL)
6670                 return -1;
6671         if (bss == NULL)
6672                 return -1;
6673
6674         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6675         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6676                                p2p_group, p2p_ie);
6677         wpabuf_free(p2p_ie);
6678
6679         return ret;
6680 }
6681
6682
6683 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6684                           const u8 *dst, const u8 *bssid,
6685                           const u8 *ie, size_t ie_len,
6686                           unsigned int rx_freq, int ssi_signal)
6687 {
6688         if (wpa_s->global->p2p_disabled)
6689                 return 0;
6690         if (wpa_s->global->p2p == NULL)
6691                 return 0;
6692
6693         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6694                                  ie, ie_len, rx_freq)) {
6695         case P2P_PREQ_NOT_P2P:
6696                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6697                                  ssi_signal);
6698                 /* fall through */
6699         case P2P_PREQ_MALFORMED:
6700         case P2P_PREQ_NOT_LISTEN:
6701         case P2P_PREQ_NOT_PROCESSED:
6702         default: /* make gcc happy */
6703                 return 0;
6704         case P2P_PREQ_PROCESSED:
6705                 return 1;
6706         }
6707 }
6708
6709
6710 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6711                         const u8 *sa, const u8 *bssid,
6712                         u8 category, const u8 *data, size_t len, int freq)
6713 {
6714         if (wpa_s->global->p2p_disabled)
6715                 return;
6716         if (wpa_s->global->p2p == NULL)
6717                 return;
6718
6719         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6720                       freq);
6721 }
6722
6723
6724 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6725 {
6726         unsigned int bands;
6727
6728         if (wpa_s->global->p2p_disabled)
6729                 return;
6730         if (wpa_s->global->p2p == NULL)
6731                 return;
6732
6733         bands = wpas_get_bands(wpa_s, NULL);
6734         p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
6735 }
6736
6737
6738 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6739 {
6740         p2p_group_deinit(wpa_s->p2p_group);
6741         wpa_s->p2p_group = NULL;
6742
6743         wpa_s->ap_configured_cb = NULL;
6744         wpa_s->ap_configured_cb_ctx = NULL;
6745         wpa_s->ap_configured_cb_data = NULL;
6746         wpa_s->connect_without_scan = NULL;
6747 }
6748
6749
6750 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6751 {
6752         wpa_s->p2p_long_listen = 0;
6753
6754         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6755                 return -1;
6756
6757         return p2p_reject(wpa_s->global->p2p, addr);
6758 }
6759
6760
6761 /* Invite to reinvoke a persistent group */
6762 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6763                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6764                     int vht_center_freq2, int ht40, int vht, int max_chwidth,
6765                     int pref_freq)
6766 {
6767         enum p2p_invite_role role;
6768         u8 *bssid = NULL;
6769         int force_freq = 0;
6770         int res;
6771         int no_pref_freq_given = pref_freq == 0;
6772         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6773
6774         wpa_s->global->p2p_invite_group = NULL;
6775         if (peer_addr)
6776                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6777         else
6778                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6779
6780         wpa_s->p2p_persistent_go_freq = freq;
6781         wpa_s->p2p_go_ht40 = !!ht40;
6782         wpa_s->p2p_go_vht = !!vht;
6783         wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
6784         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
6785         if (ssid->mode == WPAS_MODE_P2P_GO) {
6786                 role = P2P_INVITE_ROLE_GO;
6787                 if (peer_addr == NULL) {
6788                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6789                                    "address in invitation command");
6790                         return -1;
6791                 }
6792                 if (wpas_p2p_create_iface(wpa_s)) {
6793                         if (wpas_p2p_add_group_interface(wpa_s,
6794                                                          WPA_IF_P2P_GO) < 0) {
6795                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6796                                            "allocate a new interface for the "
6797                                            "group");
6798                                 return -1;
6799                         }
6800                         bssid = wpa_s->pending_interface_addr;
6801                 } else if (wpa_s->p2p_mgmt)
6802                         bssid = wpa_s->parent->own_addr;
6803                 else
6804                         bssid = wpa_s->own_addr;
6805         } else {
6806                 role = P2P_INVITE_ROLE_CLIENT;
6807                 peer_addr = ssid->bssid;
6808         }
6809         wpa_s->pending_invite_ssid_id = ssid->id;
6810
6811         size = P2P_MAX_PREF_CHANNELS;
6812         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6813                                    role == P2P_INVITE_ROLE_GO,
6814                                    pref_freq_list, &size);
6815         if (res)
6816                 return res;
6817
6818         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6819                 return -1;
6820
6821         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6822
6823         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6824             no_pref_freq_given && pref_freq > 0 &&
6825             wpa_s->num_multichan_concurrent > 1 &&
6826             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6827                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6828                            pref_freq);
6829                 pref_freq = 0;
6830         }
6831
6832         /*
6833          * Stop any find/listen operations before invitation and possibly
6834          * connection establishment.
6835          */
6836         wpas_p2p_stop_find_oper(wpa_s);
6837
6838         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6839                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6840                           1, pref_freq, -1);
6841 }
6842
6843
6844 /* Invite to join an active group */
6845 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6846                           const u8 *peer_addr, const u8 *go_dev_addr)
6847 {
6848         struct wpa_global *global = wpa_s->global;
6849         enum p2p_invite_role role;
6850         u8 *bssid = NULL;
6851         struct wpa_ssid *ssid;
6852         int persistent;
6853         int freq = 0, force_freq = 0, pref_freq = 0;
6854         int res;
6855         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6856
6857         wpa_s->p2p_persistent_go_freq = 0;
6858         wpa_s->p2p_go_ht40 = 0;
6859         wpa_s->p2p_go_vht = 0;
6860         wpa_s->p2p_go_vht_center_freq2 = 0;
6861         wpa_s->p2p_go_max_oper_chwidth = 0;
6862
6863         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6864                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6865                         break;
6866         }
6867         if (wpa_s == NULL) {
6868                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6869                 return -1;
6870         }
6871
6872         ssid = wpa_s->current_ssid;
6873         if (ssid == NULL) {
6874                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6875                            "invitation");
6876                 return -1;
6877         }
6878
6879         wpa_s->global->p2p_invite_group = wpa_s;
6880         persistent = ssid->p2p_persistent_group &&
6881                 wpas_p2p_get_persistent(wpa_s->p2pdev, peer_addr,
6882                                         ssid->ssid, ssid->ssid_len);
6883
6884         if (ssid->mode == WPAS_MODE_P2P_GO) {
6885                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6886                 bssid = wpa_s->own_addr;
6887                 if (go_dev_addr == NULL)
6888                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6889                 freq = ssid->frequency;
6890         } else {
6891                 role = P2P_INVITE_ROLE_CLIENT;
6892                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6893                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6894                                    "invite to current group");
6895                         return -1;
6896                 }
6897                 bssid = wpa_s->bssid;
6898                 if (go_dev_addr == NULL &&
6899                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6900                         go_dev_addr = wpa_s->go_dev_addr;
6901                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6902                         (int) wpa_s->assoc_freq;
6903         }
6904         wpa_s->p2pdev->pending_invite_ssid_id = -1;
6905
6906         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6907                 return -1;
6908
6909         size = P2P_MAX_PREF_CHANNELS;
6910         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6911                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
6912                                    pref_freq_list, &size);
6913         if (res)
6914                 return res;
6915         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6916
6917         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6918                           ssid->ssid, ssid->ssid_len, force_freq,
6919                           go_dev_addr, persistent, pref_freq, -1);
6920 }
6921
6922
6923 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6924 {
6925         struct wpa_ssid *ssid = wpa_s->current_ssid;
6926         u8 go_dev_addr[ETH_ALEN];
6927         int network_id = -1;
6928         int persistent;
6929         int freq;
6930         u8 ip[3 * 4];
6931         char ip_addr[100];
6932
6933         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6934                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6935                                      wpa_s->p2pdev, NULL);
6936         }
6937
6938         if (!wpa_s->show_group_started || !ssid)
6939                 return;
6940
6941         wpa_s->show_group_started = 0;
6942         if (!wpa_s->p2p_go_group_formation_completed &&
6943             wpa_s->global->p2p_group_formation == wpa_s) {
6944                 wpa_dbg(wpa_s, MSG_DEBUG,
6945                         "P2P: Marking group formation completed on client on data connection");
6946                 wpa_s->p2p_go_group_formation_completed = 1;
6947                 wpa_s->global->p2p_group_formation = NULL;
6948                 wpa_s->p2p_in_provisioning = 0;
6949                 wpa_s->p2p_in_invitation = 0;
6950         }
6951
6952         os_memset(go_dev_addr, 0, ETH_ALEN);
6953         if (ssid->bssid_set)
6954                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6955         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6956                                                ssid->ssid_len);
6957         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6958
6959         if (wpa_s->global->p2p_group_formation == wpa_s)
6960                 wpa_s->global->p2p_group_formation = NULL;
6961
6962         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6963                 (int) wpa_s->assoc_freq;
6964
6965         ip_addr[0] = '\0';
6966         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6967                 int res;
6968
6969                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6970                                   " ip_addr=%u.%u.%u.%u "
6971                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6972                                   ip[0], ip[1], ip[2], ip[3],
6973                                   ip[4], ip[5], ip[6], ip[7],
6974                                   ip[8], ip[9], ip[10], ip[11]);
6975                 if (os_snprintf_error(sizeof(ip_addr), res))
6976                         ip_addr[0] = '\0';
6977         }
6978
6979         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6980                                ssid->passphrase == NULL && ssid->psk_set ?
6981                                ssid->psk : NULL,
6982                                ssid->passphrase, go_dev_addr, persistent,
6983                                ip_addr);
6984
6985         if (persistent)
6986                 network_id = wpas_p2p_store_persistent_group(wpa_s->p2pdev,
6987                                                              ssid, go_dev_addr);
6988         if (network_id < 0)
6989                 network_id = ssid->id;
6990         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6991 }
6992
6993
6994 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6995                           u32 interval1, u32 duration2, u32 interval2)
6996 {
6997         int ret;
6998
6999         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7000                 return -1;
7001
7002         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
7003             wpa_s->current_ssid == NULL ||
7004             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
7005                 return -1;
7006
7007         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
7008                                wpa_s->own_addr, wpa_s->assoc_freq,
7009                                duration1, interval1, duration2, interval2);
7010         if (ret == 0)
7011                 wpa_s->waiting_presence_resp = 1;
7012
7013         return ret;
7014 }
7015
7016
7017 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
7018                         unsigned int interval)
7019 {
7020         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7021                 return -1;
7022
7023         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
7024 }
7025
7026
7027 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
7028 {
7029         if (wpa_s->current_ssid == NULL) {
7030                 /*
7031                  * current_ssid can be cleared when P2P client interface gets
7032                  * disconnected, so assume this interface was used as P2P
7033                  * client.
7034                  */
7035                 return 1;
7036         }
7037         return wpa_s->current_ssid->p2p_group &&
7038                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
7039 }
7040
7041
7042 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
7043 {
7044         struct wpa_supplicant *wpa_s = eloop_ctx;
7045
7046         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
7047                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
7048                            "disabled");
7049                 return;
7050         }
7051
7052         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
7053                    "group");
7054         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7055 }
7056
7057
7058 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7059 {
7060         int timeout;
7061
7062         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7063                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7064
7065         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7066                 return;
7067
7068         timeout = wpa_s->conf->p2p_group_idle;
7069         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7070             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7071             timeout = P2P_MAX_CLIENT_IDLE;
7072
7073         if (timeout == 0)
7074                 return;
7075
7076         if (timeout < 0) {
7077                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7078                         timeout = 0; /* special client mode no-timeout */
7079                 else
7080                         return;
7081         }
7082
7083         if (wpa_s->p2p_in_provisioning) {
7084                 /*
7085                  * Use the normal group formation timeout during the
7086                  * provisioning phase to avoid terminating this process too
7087                  * early due to group idle timeout.
7088                  */
7089                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7090                            "during provisioning");
7091                 return;
7092         }
7093
7094         if (wpa_s->show_group_started) {
7095                 /*
7096                  * Use the normal group formation timeout between the end of
7097                  * the provisioning phase and completion of 4-way handshake to
7098                  * avoid terminating this process too early due to group idle
7099                  * timeout.
7100                  */
7101                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7102                            "while waiting for initial 4-way handshake to "
7103                            "complete");
7104                 return;
7105         }
7106
7107         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7108                    timeout);
7109         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7110                                wpa_s, NULL);
7111 }
7112
7113
7114 /* Returns 1 if the interface was removed */
7115 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7116                           u16 reason_code, const u8 *ie, size_t ie_len,
7117                           int locally_generated)
7118 {
7119         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7120                 return 0;
7121
7122         if (!locally_generated)
7123                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7124                                  ie_len);
7125
7126         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7127             wpa_s->current_ssid &&
7128             wpa_s->current_ssid->p2p_group &&
7129             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7130                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7131                            "session is ending");
7132                 if (wpas_p2p_group_delete(wpa_s,
7133                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7134                     > 0)
7135                         return 1;
7136         }
7137
7138         return 0;
7139 }
7140
7141
7142 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7143                              u16 reason_code, const u8 *ie, size_t ie_len,
7144                              int locally_generated)
7145 {
7146         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7147                 return;
7148
7149         if (!locally_generated)
7150                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7151                                    ie_len);
7152 }
7153
7154
7155 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7156 {
7157         struct p2p_data *p2p = wpa_s->global->p2p;
7158
7159         if (p2p == NULL)
7160                 return;
7161
7162         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7163                 return;
7164
7165         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7166                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7167
7168         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7169                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7170
7171         if (wpa_s->wps &&
7172             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7173                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7174
7175         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7176                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7177
7178         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7179                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7180                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7181                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7182                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7183         }
7184
7185         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7186                 p2p_set_sec_dev_types(p2p,
7187                                       (void *) wpa_s->conf->sec_device_type,
7188                                       wpa_s->conf->num_sec_device_types);
7189
7190         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7191                 int i;
7192                 p2p_remove_wps_vendor_extensions(p2p);
7193                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7194                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7195                                 continue;
7196                         p2p_add_wps_vendor_extension(
7197                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
7198                 }
7199         }
7200
7201         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7202             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7203                 char country[3];
7204                 country[0] = wpa_s->conf->country[0];
7205                 country[1] = wpa_s->conf->country[1];
7206                 country[2] = 0x04;
7207                 p2p_set_country(p2p, country);
7208         }
7209
7210         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7211                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7212                                      wpa_s->conf->p2p_ssid_postfix ?
7213                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7214                                      0);
7215         }
7216
7217         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7218                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7219
7220         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7221                 u8 reg_class, channel;
7222                 int ret;
7223                 unsigned int r;
7224                 u8 channel_forced;
7225
7226                 if (wpa_s->conf->p2p_listen_reg_class &&
7227                     wpa_s->conf->p2p_listen_channel) {
7228                         reg_class = wpa_s->conf->p2p_listen_reg_class;
7229                         channel = wpa_s->conf->p2p_listen_channel;
7230                         channel_forced = 1;
7231                 } else {
7232                         reg_class = 81;
7233                         /*
7234                          * Pick one of the social channels randomly as the
7235                          * listen channel.
7236                          */
7237                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7238                                 channel = 1;
7239                         else
7240                                 channel = 1 + (r % 3) * 5;
7241                         channel_forced = 0;
7242                 }
7243                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7244                                              channel_forced);
7245                 if (ret)
7246                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7247                                    "failed: %d", ret);
7248         }
7249         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7250                 u8 op_reg_class, op_channel, cfg_op_channel;
7251                 int ret = 0;
7252                 unsigned int r;
7253                 if (wpa_s->conf->p2p_oper_reg_class &&
7254                     wpa_s->conf->p2p_oper_channel) {
7255                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7256                         op_channel = wpa_s->conf->p2p_oper_channel;
7257                         cfg_op_channel = 1;
7258                 } else {
7259                         op_reg_class = 81;
7260                         /*
7261                          * Use random operation channel from (1, 6, 11)
7262                          *if no other preference is indicated.
7263                          */
7264                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7265                                 op_channel = 1;
7266                         else
7267                                 op_channel = 1 + (r % 3) * 5;
7268                         cfg_op_channel = 0;
7269                 }
7270                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7271                                            cfg_op_channel);
7272                 if (ret)
7273                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7274                                    "failed: %d", ret);
7275         }
7276
7277         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7278                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7279                                       wpa_s->conf->p2p_pref_chan) < 0) {
7280                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7281                                    "update failed");
7282                 }
7283
7284                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7285                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7286                                    "update failed");
7287                 }
7288         }
7289
7290         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7291                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7292 }
7293
7294
7295 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7296                      int duration)
7297 {
7298         if (!wpa_s->ap_iface)
7299                 return -1;
7300         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7301                                    duration);
7302 }
7303
7304
7305 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7306 {
7307         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7308                 return -1;
7309
7310         wpa_s->global->cross_connection = enabled;
7311         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7312
7313         if (!enabled) {
7314                 struct wpa_supplicant *iface;
7315
7316                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7317                 {
7318                         if (iface->cross_connect_enabled == 0)
7319                                 continue;
7320
7321                         iface->cross_connect_enabled = 0;
7322                         iface->cross_connect_in_use = 0;
7323                         wpa_msg_global(iface->p2pdev, MSG_INFO,
7324                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7325                                        iface->ifname,
7326                                        iface->cross_connect_uplink);
7327                 }
7328         }
7329
7330         return 0;
7331 }
7332
7333
7334 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7335 {
7336         struct wpa_supplicant *iface;
7337
7338         if (!uplink->global->cross_connection)
7339                 return;
7340
7341         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7342                 if (!iface->cross_connect_enabled)
7343                         continue;
7344                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7345                     0)
7346                         continue;
7347                 if (iface->ap_iface == NULL)
7348                         continue;
7349                 if (iface->cross_connect_in_use)
7350                         continue;
7351
7352                 iface->cross_connect_in_use = 1;
7353                 wpa_msg_global(iface->p2pdev, MSG_INFO,
7354                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7355                                iface->ifname, iface->cross_connect_uplink);
7356         }
7357 }
7358
7359
7360 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7361 {
7362         struct wpa_supplicant *iface;
7363
7364         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7365                 if (!iface->cross_connect_enabled)
7366                         continue;
7367                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7368                     0)
7369                         continue;
7370                 if (!iface->cross_connect_in_use)
7371                         continue;
7372
7373                 wpa_msg_global(iface->p2pdev, MSG_INFO,
7374                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7375                                iface->ifname, iface->cross_connect_uplink);
7376                 iface->cross_connect_in_use = 0;
7377         }
7378 }
7379
7380
7381 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7382 {
7383         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7384             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7385             wpa_s->cross_connect_disallowed)
7386                 wpas_p2p_disable_cross_connect(wpa_s);
7387         else
7388                 wpas_p2p_enable_cross_connect(wpa_s);
7389         if (!wpa_s->ap_iface &&
7390             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7391                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7392 }
7393
7394
7395 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7396 {
7397         wpas_p2p_disable_cross_connect(wpa_s);
7398         if (!wpa_s->ap_iface &&
7399             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7400                                          wpa_s, NULL))
7401                 wpas_p2p_set_group_idle_timeout(wpa_s);
7402 }
7403
7404
7405 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7406 {
7407         struct wpa_supplicant *iface;
7408
7409         if (!wpa_s->global->cross_connection)
7410                 return;
7411
7412         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7413                 if (iface == wpa_s)
7414                         continue;
7415                 if (iface->drv_flags &
7416                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7417                         continue;
7418                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7419                     iface != wpa_s->parent)
7420                         continue;
7421
7422                 wpa_s->cross_connect_enabled = 1;
7423                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7424                            sizeof(wpa_s->cross_connect_uplink));
7425                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7426                            "%s to %s whenever uplink is available",
7427                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7428
7429                 if (iface->ap_iface || iface->current_ssid == NULL ||
7430                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7431                     iface->cross_connect_disallowed ||
7432                     iface->wpa_state != WPA_COMPLETED)
7433                         break;
7434
7435                 wpa_s->cross_connect_in_use = 1;
7436                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
7437                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7438                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7439                 break;
7440         }
7441 }
7442
7443
7444 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7445 {
7446         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7447             !wpa_s->p2p_in_provisioning)
7448                 return 0; /* not P2P client operation */
7449
7450         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7451                    "session overlap");
7452         if (wpa_s != wpa_s->p2pdev)
7453                 wpa_msg_ctrl(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_OVERLAP);
7454         wpas_p2p_group_formation_failed(wpa_s, 0);
7455         return 1;
7456 }
7457
7458
7459 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7460 {
7461         struct wpa_supplicant *wpa_s = eloop_ctx;
7462         wpas_p2p_notif_pbc_overlap(wpa_s);
7463 }
7464
7465
7466 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7467                                   enum wpas_p2p_channel_update_trig trig)
7468 {
7469         struct p2p_channels chan, cli_chan;
7470         struct wpa_used_freq_data *freqs = NULL;
7471         unsigned int num = wpa_s->num_multichan_concurrent;
7472
7473         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7474                 return;
7475
7476         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7477         if (!freqs)
7478                 return;
7479
7480         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7481
7482         os_memset(&chan, 0, sizeof(chan));
7483         os_memset(&cli_chan, 0, sizeof(cli_chan));
7484         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7485                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7486                            "channel list");
7487                 return;
7488         }
7489
7490         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7491
7492         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7493
7494         /*
7495          * The used frequencies map changed, so it is possible that a GO is
7496          * using a channel that is no longer valid for P2P use. It is also
7497          * possible that due to policy consideration, it would be preferable to
7498          * move it to a frequency already used by other station interfaces.
7499          */
7500         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7501
7502         os_free(freqs);
7503 }
7504
7505
7506 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7507                                      struct wpa_scan_results *scan_res)
7508 {
7509         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7510 }
7511
7512
7513 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7514 {
7515         struct wpa_global *global = wpa_s->global;
7516         int found = 0;
7517         const u8 *peer;
7518
7519         if (global->p2p == NULL)
7520                 return -1;
7521
7522         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7523
7524         if (wpa_s->pending_interface_name[0] &&
7525             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7526                 found = 1;
7527
7528         peer = p2p_get_go_neg_peer(global->p2p);
7529         if (peer) {
7530                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7531                            MACSTR, MAC2STR(peer));
7532                 p2p_unauthorize(global->p2p, peer);
7533                 found = 1;
7534         }
7535
7536         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7537                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7538                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7539                 found = 1;
7540         }
7541
7542         if (wpa_s->pending_pd_before_join) {
7543                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7544                 wpa_s->pending_pd_before_join = 0;
7545                 found = 1;
7546         }
7547
7548         wpas_p2p_stop_find(wpa_s);
7549
7550         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7551                 if (wpa_s == global->p2p_group_formation &&
7552                     (wpa_s->p2p_in_provisioning ||
7553                      wpa_s->parent->pending_interface_type ==
7554                      WPA_IF_P2P_CLIENT)) {
7555                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7556                                    "formation found - cancelling",
7557                                    wpa_s->ifname);
7558                         found = 1;
7559                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7560                                              wpa_s->p2pdev, NULL);
7561                         if (wpa_s->p2p_in_provisioning) {
7562                                 wpas_group_formation_completed(wpa_s, 0, 0);
7563                                 break;
7564                         }
7565                         wpas_p2p_group_delete(wpa_s,
7566                                               P2P_GROUP_REMOVAL_REQUESTED);
7567                         break;
7568                 } else if (wpa_s->p2p_in_invitation) {
7569                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7570                                    wpa_s->ifname);
7571                         found = 1;
7572                         wpas_p2p_group_formation_failed(wpa_s, 0);
7573                         break;
7574                 }
7575         }
7576
7577         if (!found) {
7578                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7579                 return -1;
7580         }
7581
7582         return 0;
7583 }
7584
7585
7586 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7587 {
7588         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7589                 return;
7590
7591         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7592                    "being available anymore");
7593         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7594 }
7595
7596
7597 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7598                                    int freq_24, int freq_5, int freq_overall)
7599 {
7600         struct p2p_data *p2p = wpa_s->global->p2p;
7601         if (p2p == NULL)
7602                 return;
7603         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7604 }
7605
7606
7607 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7608 {
7609         u8 peer[ETH_ALEN];
7610         struct p2p_data *p2p = wpa_s->global->p2p;
7611
7612         if (p2p == NULL)
7613                 return -1;
7614
7615         if (hwaddr_aton(addr, peer))
7616                 return -1;
7617
7618         return p2p_unauthorize(p2p, peer);
7619 }
7620
7621
7622 /**
7623  * wpas_p2p_disconnect - Disconnect from a P2P Group
7624  * @wpa_s: Pointer to wpa_supplicant data
7625  * Returns: 0 on success, -1 on failure
7626  *
7627  * This can be used to disconnect from a group in which the local end is a P2P
7628  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7629  * virtual network interface was created for this group, that interface will be
7630  * removed. Otherwise, only the configured P2P group network will be removed
7631  * from the interface.
7632  */
7633 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7634 {
7635
7636         if (wpa_s == NULL)
7637                 return -1;
7638
7639         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7640                 -1 : 0;
7641 }
7642
7643
7644 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7645 {
7646         int ret;
7647
7648         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7649                 return 0;
7650
7651         ret = p2p_in_progress(wpa_s->global->p2p);
7652         if (ret == 0) {
7653                 /*
7654                  * Check whether there is an ongoing WPS provisioning step (or
7655                  * other parts of group formation) on another interface since
7656                  * p2p_in_progress() does not report this to avoid issues for
7657                  * scans during such provisioning step.
7658                  */
7659                 if (wpa_s->global->p2p_group_formation &&
7660                     wpa_s->global->p2p_group_formation != wpa_s) {
7661                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7662                                 "in group formation",
7663                                 wpa_s->global->p2p_group_formation->ifname);
7664                         ret = 1;
7665                 }
7666         }
7667
7668         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7669                 struct os_reltime now;
7670                 os_get_reltime(&now);
7671                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7672                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7673                         /* Wait for the first client has expired */
7674                         wpa_s->global->p2p_go_wait_client.sec = 0;
7675                 } else {
7676                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7677                         ret = 1;
7678                 }
7679         }
7680
7681         return ret;
7682 }
7683
7684
7685 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7686                               struct wpa_ssid *ssid)
7687 {
7688         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7689             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7690                                  wpa_s->p2pdev, NULL) > 0) {
7691                 /**
7692                  * Remove the network by scheduling the group formation
7693                  * timeout to happen immediately. The teardown code
7694                  * needs to be scheduled to run asynch later so that we
7695                  * don't delete data from under ourselves unexpectedly.
7696                  * Calling wpas_p2p_group_formation_timeout directly
7697                  * causes a series of crashes in WPS failure scenarios.
7698                  */
7699                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7700                            "P2P group network getting removed");
7701                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7702                                        wpa_s->p2pdev, NULL);
7703         }
7704 }
7705
7706
7707 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7708                                           const u8 *addr, const u8 *ssid,
7709                                           size_t ssid_len)
7710 {
7711         struct wpa_ssid *s;
7712         size_t i;
7713
7714         for (s = wpa_s->conf->ssid; s; s = s->next) {
7715                 if (s->disabled != 2)
7716                         continue;
7717                 if (ssid &&
7718                     (ssid_len != s->ssid_len ||
7719                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7720                         continue;
7721                 if (addr == NULL) {
7722                         if (s->mode == WPAS_MODE_P2P_GO)
7723                                 return s;
7724                         continue;
7725                 }
7726                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7727                         return s; /* peer is GO in the persistent group */
7728                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7729                         continue;
7730                 for (i = 0; i < s->num_p2p_clients; i++) {
7731                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7732                                       addr, ETH_ALEN) == 0)
7733                                 return s; /* peer is P2P client in persistent
7734                                            * group */
7735                 }
7736         }
7737
7738         return NULL;
7739 }
7740
7741
7742 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7743                                        const u8 *addr)
7744 {
7745         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7746                                  wpa_s->p2pdev, NULL) > 0) {
7747                 /*
7748                  * This can happen if WPS provisioning step is not terminated
7749                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7750                  * peer was able to connect, there is no need to time out group
7751                  * formation after this, though. In addition, this is used with
7752                  * the initial connection wait on the GO as a separate formation
7753                  * timeout and as such, expected to be hit after the initial WPS
7754                  * provisioning step.
7755                  */
7756                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7757
7758                 if (!wpa_s->p2p_go_group_formation_completed &&
7759                     !wpa_s->group_formation_reported) {
7760                         /*
7761                          * GO has not yet notified group formation success since
7762                          * the WPS step was not completed cleanly. Do that
7763                          * notification now since the P2P Client was able to
7764                          * connect and as such, must have received the
7765                          * credential from the WPS step.
7766                          */
7767                         if (wpa_s->global->p2p)
7768                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7769                         wpas_group_formation_completed(wpa_s, 1, 0);
7770                 }
7771         }
7772         if (!wpa_s->p2p_go_group_formation_completed) {
7773                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7774                 wpa_s->p2p_go_group_formation_completed = 1;
7775                 wpa_s->global->p2p_group_formation = NULL;
7776                 wpa_s->p2p_in_provisioning = 0;
7777                 wpa_s->p2p_in_invitation = 0;
7778         }
7779         wpa_s->global->p2p_go_wait_client.sec = 0;
7780         if (addr == NULL)
7781                 return;
7782         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7783 }
7784
7785
7786 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7787                                        int group_added)
7788 {
7789         struct wpa_supplicant *group = wpa_s;
7790         int ret = 0;
7791
7792         if (wpa_s->global->p2p_group_formation)
7793                 group = wpa_s->global->p2p_group_formation;
7794         wpa_s = wpa_s->global->p2p_init_wpa_s;
7795         offchannel_send_action_done(wpa_s);
7796         if (group_added)
7797                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7798         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7799         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7800                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7801                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7802                          wpa_s->p2p_go_vht_center_freq2,
7803                          wpa_s->p2p_persistent_id,
7804                          wpa_s->p2p_pd_before_go_neg,
7805                          wpa_s->p2p_go_ht40,
7806                          wpa_s->p2p_go_vht,
7807                          wpa_s->p2p_go_max_oper_chwidth, NULL, 0);
7808         return ret;
7809 }
7810
7811
7812 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7813 {
7814         int res;
7815
7816         if (!wpa_s->p2p_fallback_to_go_neg ||
7817             wpa_s->p2p_in_provisioning <= 5)
7818                 return 0;
7819
7820         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7821                 return 0; /* peer operating as a GO */
7822
7823         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7824                 "fallback to GO Negotiation");
7825         wpa_msg_global(wpa_s->p2pdev, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7826                        "reason=GO-not-found");
7827         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7828
7829         return res == 1 ? 2 : 1;
7830 }
7831
7832
7833 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7834 {
7835         struct wpa_supplicant *ifs;
7836
7837         if (wpa_s->wpa_state > WPA_SCANNING) {
7838                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7839                         "concurrent operation",
7840                         wpa_s->conf->p2p_search_delay);
7841                 return wpa_s->conf->p2p_search_delay;
7842         }
7843
7844         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7845                          radio_list) {
7846                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7847                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7848                                 "delay due to concurrent operation on "
7849                                 "interface %s",
7850                                 wpa_s->conf->p2p_search_delay,
7851                                 ifs->ifname);
7852                         return wpa_s->conf->p2p_search_delay;
7853                 }
7854         }
7855
7856         return 0;
7857 }
7858
7859
7860 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7861                                      struct wpa_ssid *s, const u8 *addr,
7862                                      int iface_addr)
7863 {
7864         struct psk_list_entry *psk, *tmp;
7865         int changed = 0;
7866
7867         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7868                               list) {
7869                 if ((iface_addr && !psk->p2p &&
7870                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7871                     (!iface_addr && psk->p2p &&
7872                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7873                         wpa_dbg(wpa_s, MSG_DEBUG,
7874                                 "P2P: Remove persistent group PSK list entry for "
7875                                 MACSTR " p2p=%u",
7876                                 MAC2STR(psk->addr), psk->p2p);
7877                         dl_list_del(&psk->list);
7878                         os_free(psk);
7879                         changed++;
7880                 }
7881         }
7882
7883         return changed;
7884 }
7885
7886
7887 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7888                          const u8 *p2p_dev_addr,
7889                          const u8 *psk, size_t psk_len)
7890 {
7891         struct wpa_ssid *ssid = wpa_s->current_ssid;
7892         struct wpa_ssid *persistent;
7893         struct psk_list_entry *p, *last;
7894
7895         if (psk_len != sizeof(p->psk))
7896                 return;
7897
7898         if (p2p_dev_addr) {
7899                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7900                         " p2p_dev_addr=" MACSTR,
7901                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7902                 if (is_zero_ether_addr(p2p_dev_addr))
7903                         p2p_dev_addr = NULL;
7904         } else {
7905                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7906                         MAC2STR(mac_addr));
7907         }
7908
7909         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7910                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7911                 /* To be added to persistent group once created */
7912                 if (wpa_s->global->add_psk == NULL) {
7913                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7914                         if (wpa_s->global->add_psk == NULL)
7915                                 return;
7916                 }
7917                 p = wpa_s->global->add_psk;
7918                 if (p2p_dev_addr) {
7919                         p->p2p = 1;
7920                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7921                 } else {
7922                         p->p2p = 0;
7923                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7924                 }
7925                 os_memcpy(p->psk, psk, psk_len);
7926                 return;
7927         }
7928
7929         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7930                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7931                 return;
7932         }
7933
7934         persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
7935                                              ssid->ssid_len);
7936         if (!persistent) {
7937                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7938                 return;
7939         }
7940
7941         p = os_zalloc(sizeof(*p));
7942         if (p == NULL)
7943                 return;
7944         if (p2p_dev_addr) {
7945                 p->p2p = 1;
7946                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7947         } else {
7948                 p->p2p = 0;
7949                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7950         }
7951         os_memcpy(p->psk, psk, psk_len);
7952
7953         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7954             (last = dl_list_last(&persistent->psk_list,
7955                                  struct psk_list_entry, list))) {
7956                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7957                         MACSTR " (p2p=%u) to make room for a new one",
7958                         MAC2STR(last->addr), last->p2p);
7959                 dl_list_del(&last->list);
7960                 os_free(last);
7961         }
7962
7963         wpas_p2p_remove_psk_entry(wpa_s->p2pdev, persistent,
7964                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7965                                   p2p_dev_addr == NULL);
7966         if (p2p_dev_addr) {
7967                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7968                         MACSTR, MAC2STR(p2p_dev_addr));
7969         } else {
7970                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7971                         MAC2STR(mac_addr));
7972         }
7973         dl_list_add(&persistent->psk_list, &p->list);
7974
7975         if (wpa_s->p2pdev->conf->update_config &&
7976             wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
7977                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7978 }
7979
7980
7981 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7982                                 struct wpa_ssid *s, const u8 *addr,
7983                                 int iface_addr)
7984 {
7985         int res;
7986
7987         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7988         if (res > 0 && wpa_s->conf->update_config &&
7989             wpa_config_write(wpa_s->confname, wpa_s->conf))
7990                 wpa_dbg(wpa_s, MSG_DEBUG,
7991                         "P2P: Failed to update configuration");
7992 }
7993
7994
7995 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7996                                       const u8 *peer, int iface_addr)
7997 {
7998         struct hostapd_data *hapd;
7999         struct hostapd_wpa_psk *psk, *prev, *rem;
8000         struct sta_info *sta;
8001
8002         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
8003             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
8004                 return;
8005
8006         /* Remove per-station PSK entry */
8007         hapd = wpa_s->ap_iface->bss[0];
8008         prev = NULL;
8009         psk = hapd->conf->ssid.wpa_psk;
8010         while (psk) {
8011                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
8012                     (!iface_addr &&
8013                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
8014                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
8015                                 MACSTR " iface_addr=%d",
8016                                 MAC2STR(peer), iface_addr);
8017                         if (prev)
8018                                 prev->next = psk->next;
8019                         else
8020                                 hapd->conf->ssid.wpa_psk = psk->next;
8021                         rem = psk;
8022                         psk = psk->next;
8023                         os_free(rem);
8024                 } else {
8025                         prev = psk;
8026                         psk = psk->next;
8027                 }
8028         }
8029
8030         /* Disconnect from group */
8031         if (iface_addr)
8032                 sta = ap_get_sta(hapd, peer);
8033         else
8034                 sta = ap_get_sta_p2p(hapd, peer);
8035         if (sta) {
8036                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
8037                         " (iface_addr=%d) from group",
8038                         MAC2STR(peer), iface_addr);
8039                 hostapd_drv_sta_deauth(hapd, sta->addr,
8040                                        WLAN_REASON_DEAUTH_LEAVING);
8041                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
8042         }
8043 }
8044
8045
8046 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
8047                             int iface_addr)
8048 {
8049         struct wpa_ssid *s;
8050         struct wpa_supplicant *w;
8051         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
8052
8053         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
8054
8055         /* Remove from any persistent group */
8056         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
8057                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8058                         continue;
8059                 if (!iface_addr)
8060                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
8061                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
8062         }
8063
8064         /* Remove from any operating group */
8065         for (w = wpa_s->global->ifaces; w; w = w->next)
8066                 wpas_p2p_remove_client_go(w, peer, iface_addr);
8067 }
8068
8069
8070 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8071 {
8072         struct wpa_supplicant *wpa_s = eloop_ctx;
8073         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8074 }
8075
8076
8077 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8078 {
8079         struct wpa_supplicant *wpa_s = eloop_ctx;
8080
8081         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8082         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8083 }
8084
8085
8086 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8087                                         struct wpa_ssid *ssid)
8088 {
8089         struct wpa_supplicant *iface;
8090
8091         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8092                 if (!iface->current_ssid ||
8093                     iface->current_ssid->frequency == freq ||
8094                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8095                      !iface->current_ssid->p2p_group))
8096                         continue;
8097
8098                 /* Remove the connection with least priority */
8099                 if (!wpas_is_p2p_prioritized(iface)) {
8100                         /* STA connection has priority over existing
8101                          * P2P connection, so remove the interface. */
8102                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8103                         eloop_register_timeout(0, 0,
8104                                                wpas_p2p_group_freq_conflict,
8105                                                iface, NULL);
8106                         /* If connection in progress is P2P connection, do not
8107                          * proceed for the connection. */
8108                         if (wpa_s == iface)
8109                                 return -1;
8110                         else
8111                                 return 0;
8112                 } else {
8113                         /* P2P connection has priority, disable the STA network
8114                          */
8115                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
8116                                                        ssid);
8117                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8118                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8119                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8120                                   ETH_ALEN);
8121                         /* If P2P connection is in progress, continue
8122                          * connecting...*/
8123                         if (wpa_s == iface)
8124                                 return 0;
8125                         else
8126                                 return -1;
8127                 }
8128         }
8129
8130         return 0;
8131 }
8132
8133
8134 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8135 {
8136         struct wpa_ssid *ssid = wpa_s->current_ssid;
8137
8138         if (ssid == NULL || !ssid->p2p_group)
8139                 return 0;
8140
8141         if (wpa_s->p2p_last_4way_hs_fail &&
8142             wpa_s->p2p_last_4way_hs_fail == ssid) {
8143                 u8 go_dev_addr[ETH_ALEN];
8144                 struct wpa_ssid *persistent;
8145
8146                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8147                                               ssid->ssid,
8148                                               ssid->ssid_len) <= 0) {
8149                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8150                         goto disconnect;
8151                 }
8152
8153                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8154                         MACSTR, MAC2STR(go_dev_addr));
8155                 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, go_dev_addr,
8156                                                      ssid->ssid,
8157                                                      ssid->ssid_len);
8158                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8159                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8160                         goto disconnect;
8161                 }
8162                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
8163                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8164                                persistent->id);
8165         disconnect:
8166                 wpa_s->p2p_last_4way_hs_fail = NULL;
8167                 /*
8168                  * Remove the group from a timeout to avoid issues with caller
8169                  * continuing to use the interface if this is on a P2P group
8170                  * interface.
8171                  */
8172                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8173                                        wpa_s, NULL);
8174                 return 1;
8175         }
8176
8177         wpa_s->p2p_last_4way_hs_fail = ssid;
8178         return 0;
8179 }
8180
8181
8182 #ifdef CONFIG_WPS_NFC
8183
8184 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8185                                              struct wpabuf *p2p)
8186 {
8187         struct wpabuf *ret;
8188         size_t wsc_len;
8189
8190         if (p2p == NULL) {
8191                 wpabuf_free(wsc);
8192                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8193                 return NULL;
8194         }
8195
8196         wsc_len = wsc ? wpabuf_len(wsc) : 0;
8197         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8198         if (ret == NULL) {
8199                 wpabuf_free(wsc);
8200                 wpabuf_free(p2p);
8201                 return NULL;
8202         }
8203
8204         wpabuf_put_be16(ret, wsc_len);
8205         if (wsc)
8206                 wpabuf_put_buf(ret, wsc);
8207         wpabuf_put_be16(ret, wpabuf_len(p2p));
8208         wpabuf_put_buf(ret, p2p);
8209
8210         wpabuf_free(wsc);
8211         wpabuf_free(p2p);
8212         wpa_hexdump_buf(MSG_DEBUG,
8213                         "P2P: Generated NFC connection handover message", ret);
8214
8215         if (ndef && ret) {
8216                 struct wpabuf *tmp;
8217                 tmp = ndef_build_p2p(ret);
8218                 wpabuf_free(ret);
8219                 if (tmp == NULL) {
8220                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8221                         return NULL;
8222                 }
8223                 ret = tmp;
8224         }
8225
8226         return ret;
8227 }
8228
8229
8230 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8231                              struct wpa_ssid **ssid, u8 *go_dev_addr)
8232 {
8233         struct wpa_supplicant *iface;
8234
8235         if (go_dev_addr)
8236                 os_memset(go_dev_addr, 0, ETH_ALEN);
8237         if (ssid)
8238                 *ssid = NULL;
8239         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8240                 if (iface->wpa_state < WPA_ASSOCIATING ||
8241                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8242                     !iface->current_ssid->p2p_group ||
8243                     iface->current_ssid->mode != WPAS_MODE_INFRA)
8244                         continue;
8245                 if (ssid)
8246                         *ssid = iface->current_ssid;
8247                 if (go_dev_addr)
8248                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8249                 return iface->assoc_freq;
8250         }
8251         return 0;
8252 }
8253
8254
8255 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8256                                           int ndef)
8257 {
8258         struct wpabuf *wsc, *p2p;
8259         struct wpa_ssid *ssid;
8260         u8 go_dev_addr[ETH_ALEN];
8261         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8262
8263         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8264                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8265                 return NULL;
8266         }
8267
8268         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8269             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8270                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8271                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8272                 return NULL;
8273         }
8274
8275         if (cli_freq == 0) {
8276                 wsc = wps_build_nfc_handover_req_p2p(
8277                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8278         } else
8279                 wsc = NULL;
8280         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8281                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8282                                          ssid ? ssid->ssid_len : 0);
8283
8284         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8285 }
8286
8287
8288 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8289                                           int ndef, int tag)
8290 {
8291         struct wpabuf *wsc, *p2p;
8292         struct wpa_ssid *ssid;
8293         u8 go_dev_addr[ETH_ALEN];
8294         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8295
8296         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8297                 return NULL;
8298
8299         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8300             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8301                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8302                 return NULL;
8303
8304         if (cli_freq == 0) {
8305                 wsc = wps_build_nfc_handover_sel_p2p(
8306                         wpa_s->parent->wps,
8307                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8308                         DEV_PW_NFC_CONNECTION_HANDOVER,
8309                         wpa_s->conf->wps_nfc_dh_pubkey,
8310                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8311         } else
8312                 wsc = NULL;
8313         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8314                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8315                                          ssid ? ssid->ssid_len : 0);
8316
8317         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8318 }
8319
8320
8321 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8322                                    struct p2p_nfc_params *params)
8323 {
8324         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8325                    "connection handover (freq=%d)",
8326                    params->go_freq);
8327
8328         if (params->go_freq && params->go_ssid_len) {
8329                 wpa_s->p2p_wps_method = WPS_NFC;
8330                 wpa_s->pending_join_wps_method = WPS_NFC;
8331                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8332                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8333                           ETH_ALEN);
8334                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8335                                            params->go_ssid,
8336                                            params->go_ssid_len);
8337         }
8338
8339         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8340                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8341                                 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8342                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8343                                 params->go_ssid_len ? params->go_ssid : NULL,
8344                                 params->go_ssid_len);
8345 }
8346
8347
8348 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8349                                   struct p2p_nfc_params *params, int tag)
8350 {
8351         int res, persistent;
8352         struct wpa_ssid *ssid;
8353
8354         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8355                    "connection handover");
8356         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8357                 ssid = wpa_s->current_ssid;
8358                 if (ssid == NULL)
8359                         continue;
8360                 if (ssid->mode != WPAS_MODE_P2P_GO)
8361                         continue;
8362                 if (wpa_s->ap_iface == NULL)
8363                         continue;
8364                 break;
8365         }
8366         if (wpa_s == NULL) {
8367                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8368                 return -1;
8369         }
8370
8371         if (wpa_s->parent->p2p_oob_dev_pw_id !=
8372             DEV_PW_NFC_CONNECTION_HANDOVER &&
8373             !wpa_s->parent->p2p_oob_dev_pw) {
8374                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8375                 return -1;
8376         }
8377         res = wpas_ap_wps_add_nfc_pw(
8378                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
8379                 wpa_s->parent->p2p_oob_dev_pw,
8380                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
8381                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
8382         if (res)
8383                 return res;
8384
8385         if (!tag) {
8386                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8387                 return 0;
8388         }
8389
8390         if (!params->peer ||
8391             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8392                 return 0;
8393
8394         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8395                    " to join", MAC2STR(params->peer->p2p_device_addr));
8396
8397         wpa_s->global->p2p_invite_group = wpa_s;
8398         persistent = ssid->p2p_persistent_group &&
8399                 wpas_p2p_get_persistent(wpa_s->parent,
8400                                         params->peer->p2p_device_addr,
8401                                         ssid->ssid, ssid->ssid_len);
8402         wpa_s->parent->pending_invite_ssid_id = -1;
8403
8404         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8405                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8406                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8407                           wpa_s->global->p2p_dev_addr, persistent, 0,
8408                           wpa_s->parent->p2p_oob_dev_pw_id);
8409 }
8410
8411
8412 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8413                                     struct p2p_nfc_params *params,
8414                                     int forced_freq)
8415 {
8416         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8417                    "connection handover");
8418         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8419                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8420                                 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8421                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8422                                 NULL, 0);
8423 }
8424
8425
8426 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8427                                     struct p2p_nfc_params *params,
8428                                     int forced_freq)
8429 {
8430         int res;
8431
8432         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8433                    "connection handover");
8434         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8435                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8436                                forced_freq, wpa_s->p2p_go_vht_center_freq2,
8437                                -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8438                                NULL, 0);
8439         if (res)
8440                 return res;
8441
8442         res = wpas_p2p_listen(wpa_s, 60);
8443         if (res) {
8444                 p2p_unauthorize(wpa_s->global->p2p,
8445                                 params->peer->p2p_device_addr);
8446         }
8447
8448         return res;
8449 }
8450
8451
8452 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8453                                             const struct wpabuf *data,
8454                                             int sel, int tag, int forced_freq)
8455 {
8456         const u8 *pos, *end;
8457         u16 len, id;
8458         struct p2p_nfc_params params;
8459         int res;
8460
8461         os_memset(&params, 0, sizeof(params));
8462         params.sel = sel;
8463
8464         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8465
8466         pos = wpabuf_head(data);
8467         end = pos + wpabuf_len(data);
8468
8469         if (end - pos < 2) {
8470                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8471                            "attributes");
8472                 return -1;
8473         }
8474         len = WPA_GET_BE16(pos);
8475         pos += 2;
8476         if (len > end - pos) {
8477                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8478                            "attributes");
8479                 return -1;
8480         }
8481         params.wsc_attr = pos;
8482         params.wsc_len = len;
8483         pos += len;
8484
8485         if (end - pos < 2) {
8486                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8487                            "attributes");
8488                 return -1;
8489         }
8490         len = WPA_GET_BE16(pos);
8491         pos += 2;
8492         if (len > end - pos) {
8493                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8494                            "attributes");
8495                 return -1;
8496         }
8497         params.p2p_attr = pos;
8498         params.p2p_len = len;
8499         pos += len;
8500
8501         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8502                     params.wsc_attr, params.wsc_len);
8503         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8504                     params.p2p_attr, params.p2p_len);
8505         if (pos < end) {
8506                 wpa_hexdump(MSG_DEBUG,
8507                             "P2P: Ignored extra data after P2P attributes",
8508                             pos, end - pos);
8509         }
8510
8511         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8512         if (res)
8513                 return res;
8514
8515         if (params.next_step == NO_ACTION)
8516                 return 0;
8517
8518         if (params.next_step == BOTH_GO) {
8519                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8520                         MAC2STR(params.peer->p2p_device_addr));
8521                 return 0;
8522         }
8523
8524         if (params.next_step == PEER_CLIENT) {
8525                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8526                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8527                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8528                                 " ssid=\"%s\"",
8529                                 MAC2STR(params.peer->p2p_device_addr),
8530                                 params.go_freq,
8531                                 MAC2STR(params.go_dev_addr),
8532                                 wpa_ssid_txt(params.go_ssid,
8533                                              params.go_ssid_len));
8534                 } else {
8535                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8536                                 "peer=" MACSTR " freq=%d",
8537                                 MAC2STR(params.peer->p2p_device_addr),
8538                                 params.go_freq);
8539                 }
8540                 return 0;
8541         }
8542
8543         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8544                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8545                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8546                 return 0;
8547         }
8548
8549         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8550         wpa_s->p2p_oob_dev_pw = NULL;
8551
8552         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8553                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8554                            "received");
8555                 return -1;
8556         }
8557
8558         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8559         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8560         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8561                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8562         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8563                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8564         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8565
8566         if (tag) {
8567                 if (id < 0x10) {
8568                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8569                                    "peer OOB Device Password Id %u", id);
8570                         return -1;
8571                 }
8572                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8573                            "Device Password Id %u", id);
8574                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8575                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8576                                 params.oob_dev_pw_len -
8577                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
8578                 wpa_s->p2p_oob_dev_pw_id = id;
8579                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8580                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8581                         params.oob_dev_pw_len -
8582                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8583                 if (wpa_s->p2p_oob_dev_pw == NULL)
8584                         return -1;
8585
8586                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8587                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8588                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8589                         return -1;
8590         } else {
8591                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8592                            "without Device Password");
8593                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8594         }
8595
8596         switch (params.next_step) {
8597         case NO_ACTION:
8598         case BOTH_GO:
8599         case PEER_CLIENT:
8600                 /* already covered above */
8601                 return 0;
8602         case JOIN_GROUP:
8603                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8604         case AUTH_JOIN:
8605                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8606         case INIT_GO_NEG:
8607                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8608         case RESP_GO_NEG:
8609                 /* TODO: use own OOB Dev Pw */
8610                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8611         }
8612
8613         return -1;
8614 }
8615
8616
8617 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8618                              const struct wpabuf *data, int forced_freq)
8619 {
8620         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8621                 return -1;
8622
8623         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8624 }
8625
8626
8627 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8628                                  const struct wpabuf *req,
8629                                  const struct wpabuf *sel, int forced_freq)
8630 {
8631         struct wpabuf *tmp;
8632         int ret;
8633
8634         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8635                 return -1;
8636
8637         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8638
8639         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8640                           wpabuf_head(req), wpabuf_len(req));
8641         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8642                           wpabuf_head(sel), wpabuf_len(sel));
8643         if (forced_freq)
8644                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8645         tmp = ndef_parse_p2p(init ? sel : req);
8646         if (tmp == NULL) {
8647                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8648                 return -1;
8649         }
8650
8651         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8652                                                forced_freq);
8653         wpabuf_free(tmp);
8654
8655         return ret;
8656 }
8657
8658
8659 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8660 {
8661         const u8 *if_addr;
8662         int go_intent = wpa_s->conf->p2p_go_intent;
8663         struct wpa_supplicant *iface;
8664
8665         if (wpa_s->global->p2p == NULL)
8666                 return -1;
8667
8668         if (!enabled) {
8669                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8670                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8671                 {
8672                         if (!iface->ap_iface)
8673                                 continue;
8674                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8675                 }
8676                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8677                                                  0, NULL);
8678                 if (wpa_s->p2p_nfc_tag_enabled)
8679                         wpas_p2p_remove_pending_group_interface(wpa_s);
8680                 wpa_s->p2p_nfc_tag_enabled = 0;
8681                 return 0;
8682         }
8683
8684         if (wpa_s->global->p2p_disabled)
8685                 return -1;
8686
8687         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8688             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8689             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8690             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8691                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8692                            "to allow static handover cases");
8693                 return -1;
8694         }
8695
8696         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8697
8698         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8699         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8700         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8701         if (wpa_s->p2p_oob_dev_pw == NULL)
8702                 return -1;
8703         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8704
8705         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8706             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8707                 /*
8708                  * P2P Group Interface present and the command came on group
8709                  * interface, so enable the token for the current interface.
8710                  */
8711                 wpa_s->create_p2p_iface = 0;
8712         } else {
8713                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8714         }
8715
8716         if (wpa_s->create_p2p_iface) {
8717                 enum wpa_driver_if_type iftype;
8718                 /* Prepare to add a new interface for the group */
8719                 iftype = WPA_IF_P2P_GROUP;
8720                 if (go_intent == 15)
8721                         iftype = WPA_IF_P2P_GO;
8722                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8723                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8724                                    "interface for the group");
8725                         return -1;
8726                 }
8727
8728                 if_addr = wpa_s->pending_interface_addr;
8729         } else if (wpa_s->p2p_mgmt)
8730                 if_addr = wpa_s->parent->own_addr;
8731         else
8732                 if_addr = wpa_s->own_addr;
8733
8734         wpa_s->p2p_nfc_tag_enabled = enabled;
8735
8736         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8737                 struct hostapd_data *hapd;
8738                 if (iface->ap_iface == NULL)
8739                         continue;
8740                 hapd = iface->ap_iface->bss[0];
8741                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8742                 hapd->conf->wps_nfc_dh_pubkey =
8743                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8744                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8745                 hapd->conf->wps_nfc_dh_privkey =
8746                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8747                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8748                 hapd->conf->wps_nfc_dev_pw =
8749                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8750                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8751
8752                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8753                         wpa_dbg(iface, MSG_DEBUG,
8754                                 "P2P: Failed to enable NFC Tag for GO");
8755                 }
8756         }
8757         p2p_set_authorized_oob_dev_pw_id(
8758                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8759                 if_addr);
8760
8761         return 0;
8762 }
8763
8764 #endif /* CONFIG_WPS_NFC */
8765
8766
8767 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8768                                              struct wpa_used_freq_data *freqs,
8769                                              unsigned int num)
8770 {
8771         u8 curr_chan, cand, chan;
8772         unsigned int i;
8773
8774         /*
8775          * If possible, optimize the Listen channel to be a channel that is
8776          * already used by one of the other interfaces.
8777          */
8778         if (!wpa_s->conf->p2p_optimize_listen_chan)
8779                 return;
8780
8781         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8782                 return;
8783
8784         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8785         for (i = 0, cand = 0; i < num; i++) {
8786                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8787                 if (curr_chan == chan) {
8788                         cand = 0;
8789                         break;
8790                 }
8791
8792                 if (chan == 1 || chan == 6 || chan == 11)
8793                         cand = chan;
8794         }
8795
8796         if (cand) {
8797                 wpa_dbg(wpa_s, MSG_DEBUG,
8798                         "P2P: Update Listen channel to %u based on operating channel",
8799                         cand);
8800                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8801         }
8802 }
8803
8804
8805 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8806 {
8807         struct hostapd_config *conf;
8808         struct p2p_go_neg_results params;
8809         struct csa_settings csa_settings;
8810         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8811         int old_freq = current_ssid->frequency;
8812         int ret;
8813
8814         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8815                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8816                 return -1;
8817         }
8818
8819         /*
8820          * TODO: This function may not always work correctly. For example,
8821          * when we have a running GO and a BSS on a DFS channel.
8822          */
8823         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8824                 wpa_dbg(wpa_s, MSG_DEBUG,
8825                         "P2P CSA: Failed to select new frequency for GO");
8826                 return -1;
8827         }
8828
8829         if (current_ssid->frequency == params.freq) {
8830                 wpa_dbg(wpa_s, MSG_DEBUG,
8831                         "P2P CSA: Selected same frequency - not moving GO");
8832                 return 0;
8833         }
8834
8835         conf = hostapd_config_defaults();
8836         if (!conf) {
8837                 wpa_dbg(wpa_s, MSG_DEBUG,
8838                         "P2P CSA: Failed to allocate default config");
8839                 return -1;
8840         }
8841
8842         current_ssid->frequency = params.freq;
8843         if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
8844                 wpa_dbg(wpa_s, MSG_DEBUG,
8845                         "P2P CSA: Failed to create new GO config");
8846                 ret = -1;
8847                 goto out;
8848         }
8849
8850         if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
8851                 wpa_dbg(wpa_s, MSG_DEBUG,
8852                         "P2P CSA: CSA to a different band is not supported");
8853                 ret = -1;
8854                 goto out;
8855         }
8856
8857         os_memset(&csa_settings, 0, sizeof(csa_settings));
8858         csa_settings.cs_count = P2P_GO_CSA_COUNT;
8859         csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
8860         csa_settings.freq_params.freq = params.freq;
8861         csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
8862         csa_settings.freq_params.ht_enabled = conf->ieee80211n;
8863         csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
8864
8865         if (conf->ieee80211ac) {
8866                 int freq1 = 0, freq2 = 0;
8867                 u8 chan, opclass;
8868
8869                 if (ieee80211_freq_to_channel_ext(params.freq,
8870                                                   conf->secondary_channel,
8871                                                   conf->vht_oper_chwidth,
8872                                                   &opclass, &chan) ==
8873                     NUM_HOSTAPD_MODES) {
8874                         wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
8875                         ret = -1;
8876                         goto out;
8877                 }
8878
8879                 if (conf->vht_oper_centr_freq_seg0_idx)
8880                         freq1 = ieee80211_chan_to_freq(
8881                                 NULL, opclass,
8882                                 conf->vht_oper_centr_freq_seg0_idx);
8883
8884                 if (conf->vht_oper_centr_freq_seg1_idx)
8885                         freq2 = ieee80211_chan_to_freq(
8886                                 NULL, opclass,
8887                                 conf->vht_oper_centr_freq_seg1_idx);
8888
8889                 if (freq1 < 0 || freq2 < 0) {
8890                         wpa_dbg(wpa_s, MSG_DEBUG,
8891                                 "P2P CSA: Selected invalid VHT center freqs");
8892                         ret = -1;
8893                         goto out;
8894                 }
8895
8896                 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
8897                 csa_settings.freq_params.center_freq1 = freq1;
8898                 csa_settings.freq_params.center_freq2 = freq2;
8899
8900                 switch (conf->vht_oper_chwidth) {
8901                 case VHT_CHANWIDTH_80MHZ:
8902                 case VHT_CHANWIDTH_80P80MHZ:
8903                         csa_settings.freq_params.bandwidth = 80;
8904                         break;
8905                 case VHT_CHANWIDTH_160MHZ:
8906                         csa_settings.freq_params.bandwidth = 160;
8907                         break;
8908                 }
8909         }
8910
8911         ret = ap_switch_channel(wpa_s, &csa_settings);
8912 out:
8913         current_ssid->frequency = old_freq;
8914         hostapd_config_free(conf);
8915         return ret;
8916 }
8917
8918
8919 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8920 {
8921         struct p2p_go_neg_results params;
8922         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8923
8924         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8925
8926         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8927                 current_ssid->frequency);
8928
8929         /* Stop the AP functionality */
8930         /* TODO: Should do this in a way that does not indicated to possible
8931          * P2P Clients in the group that the group is terminated. */
8932         wpa_supplicant_ap_deinit(wpa_s);
8933
8934         /* Reselect the GO frequency */
8935         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8936                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8937                 wpas_p2p_group_delete(wpa_s,
8938                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8939                 return;
8940         }
8941         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8942                 params.freq);
8943
8944         if (params.freq &&
8945             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8946                 wpa_printf(MSG_DEBUG,
8947                            "P2P: Selected freq (%u MHz) is not valid for P2P",
8948                            params.freq);
8949                 wpas_p2p_group_delete(wpa_s,
8950                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8951                 return;
8952         }
8953
8954         /* Update the frequency */
8955         current_ssid->frequency = params.freq;
8956         wpa_s->connect_without_scan = current_ssid;
8957         wpa_s->reassociate = 1;
8958         wpa_s->disconnected = 0;
8959         wpa_supplicant_req_scan(wpa_s, 0, 0);
8960 }
8961
8962
8963 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8964 {
8965         struct wpa_supplicant *wpa_s = eloop_ctx;
8966
8967         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8968                 return;
8969
8970         wpas_p2p_go_update_common_freqs(wpa_s);
8971
8972         /* Do not move GO in the middle of a CSA */
8973         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8974                 wpa_printf(MSG_DEBUG,
8975                            "P2P: CSA is in progress - not moving GO");
8976                 return;
8977         }
8978
8979         /*
8980          * First, try a channel switch flow. If it is not supported or fails,
8981          * take down the GO and bring it up again.
8982          */
8983         if (wpas_p2p_move_go_csa(wpa_s) < 0)
8984                 wpas_p2p_move_go_no_csa(wpa_s);
8985 }
8986
8987
8988 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
8989 {
8990         struct wpa_supplicant *wpa_s = eloop_ctx;
8991         struct wpa_used_freq_data *freqs = NULL;
8992         unsigned int num = wpa_s->num_multichan_concurrent;
8993
8994         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8995         if (!freqs)
8996                 return;
8997
8998         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8999
9000         /* Previous attempt to move a GO was not possible -- try again. */
9001         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
9002                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
9003
9004         os_free(freqs);
9005 }
9006
9007
9008 /*
9009  * Consider moving a GO from its currently used frequency:
9010  * 1. It is possible that due to regulatory consideration the frequency
9011  *    can no longer be used and there is a need to evacuate the GO.
9012  * 2. It is possible that due to MCC considerations, it would be preferable
9013  *    to move the GO to a channel that is currently used by some other
9014  *    station interface.
9015  *
9016  * In case a frequency that became invalid is once again valid, cancel a
9017  * previously initiated GO frequency change.
9018  */
9019 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
9020                                             struct wpa_used_freq_data *freqs,
9021                                             unsigned int num)
9022 {
9023         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
9024         unsigned int timeout;
9025         int freq;
9026
9027         wpas_p2p_go_update_common_freqs(wpa_s);
9028
9029         freq = wpa_s->current_ssid->frequency;
9030         for (i = 0, invalid_freq = 0; i < num; i++) {
9031                 if (freqs[i].freq == freq) {
9032                         flags = freqs[i].flags;
9033
9034                         /* The channel is invalid, must change it */
9035                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
9036                                 wpa_dbg(wpa_s, MSG_DEBUG,
9037                                         "P2P: Freq=%d MHz no longer valid for GO",
9038                                         freq);
9039                                 invalid_freq = 1;
9040                         }
9041                 } else if (freqs[i].flags == 0) {
9042                         /* Freq is not used by any other station interface */
9043                         continue;
9044                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
9045                                                freqs[i].freq)) {
9046                         /* Freq is not valid for P2P use cases */
9047                         continue;
9048                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9049                            P2P_GO_FREQ_MOVE_SCM) {
9050                         policy_move = 1;
9051                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9052                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
9053                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9054                         policy_move = 1;
9055                 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
9056                             P2P_GO_FREQ_MOVE_SCM_ECSA) &&
9057                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9058                         if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
9059                                 policy_move = 1;
9060                         } else if ((wpa_s->drv_flags &
9061                                     WPA_DRIVER_FLAGS_AP_CSA) &&
9062                                    wpas_p2p_go_clients_support_ecsa(wpa_s)) {
9063                                 u8 chan;
9064
9065                                 /*
9066                                  * We do not support CSA between bands, so move
9067                                  * GO only within the same band.
9068                                  */
9069                                 if (wpa_s->ap_iface->current_mode->mode ==
9070                                     ieee80211_freq_to_chan(freqs[i].freq,
9071                                                            &chan))
9072                                         policy_move = 1;
9073                         }
9074                 }
9075         }
9076
9077         wpa_dbg(wpa_s, MSG_DEBUG,
9078                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9079                 invalid_freq, policy_move, flags);
9080
9081         /*
9082          * The channel is valid, or we are going to have a policy move, so
9083          * cancel timeout.
9084          */
9085         if (!invalid_freq || policy_move) {
9086                 wpa_dbg(wpa_s, MSG_DEBUG,
9087                         "P2P: Cancel a GO move from freq=%d MHz", freq);
9088                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9089
9090                 if (wpas_p2p_in_progress(wpa_s)) {
9091                         wpa_dbg(wpa_s, MSG_DEBUG,
9092                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9093                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9094                                              wpa_s, NULL);
9095                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9096                                                wpas_p2p_reconsider_moving_go,
9097                                                wpa_s, NULL);
9098                         return;
9099                 }
9100         }
9101
9102         if (!invalid_freq && (!policy_move || flags != 0)) {
9103                 wpa_dbg(wpa_s, MSG_DEBUG,
9104                         "P2P: Not initiating a GO frequency change");
9105                 return;
9106         }
9107
9108         /*
9109          * Do not consider moving GO if it is in the middle of a CSA. When the
9110          * CSA is finished this flow should be retriggered.
9111          */
9112         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9113                 wpa_dbg(wpa_s, MSG_DEBUG,
9114                         "P2P: Not initiating a GO frequency change - CSA is in progress");
9115                 return;
9116         }
9117
9118         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9119                 timeout = P2P_GO_FREQ_CHANGE_TIME;
9120         else
9121                 timeout = 0;
9122
9123         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9124                 freq, timeout);
9125         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9126         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9127 }
9128
9129
9130 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9131                                          struct wpa_used_freq_data *freqs,
9132                                          unsigned int num,
9133                                          enum wpas_p2p_channel_update_trig trig)
9134 {
9135         struct wpa_supplicant *ifs;
9136
9137         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9138                              NULL);
9139
9140         /*
9141          * Travers all the radio interfaces, and for each GO interface, check
9142          * if there is a need to move the GO from the frequency it is using,
9143          * or in case the frequency is valid again, cancel the evacuation flow.
9144          */
9145         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9146                          radio_list) {
9147                 if (ifs->current_ssid == NULL ||
9148                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9149                         continue;
9150
9151                 /*
9152                  * The GO was just started or completed channel switch, no need
9153                  * to move it.
9154                  */
9155                 if (wpa_s == ifs &&
9156                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9157                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9158                         wpa_dbg(wpa_s, MSG_DEBUG,
9159                                 "P2P: GO move - schedule re-consideration");
9160                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9161                                                wpas_p2p_reconsider_moving_go,
9162                                                wpa_s, NULL);
9163                         continue;
9164                 }
9165
9166                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9167         }
9168 }
9169
9170
9171 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9172 {
9173         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9174                 return;
9175
9176         wpas_p2p_update_channel_list(wpa_s,
9177                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9178 }
9179
9180
9181 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9182 {
9183         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9184                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9185                         "the management interface is being removed");
9186                 wpas_p2p_deinit_global(wpa_s->global);
9187         }
9188 }
9189
9190
9191 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9192 {
9193         if (wpa_s->ap_iface->bss)
9194                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9195         wpas_p2p_group_deinit(wpa_s);
9196 }