wpa_supplicant/p2p_supplicant.c

   1 /*
   2  * wpa_supplicant - P2P
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi>
   5  *
   6  * This software may be distributed under the terms of the BSD license.
   7  * See README for more details.
   8  */
   9
  10 #include "includes.h"
  11
  12 #include "common.h"
  13 #include "eloop.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/wpa_ctrl.h"
  17 #include "wps/wps_i.h"
  18 #include "p2p/p2p.h"
  19 #include "ap/hostapd.h"
  20 #include "ap/ap_config.h"
  21 #include "ap/sta_info.h"
  22 #include "ap/ap_drv_ops.h"
  23 #include "ap/wps_hostapd.h"
  24 #include "ap/p2p_hostapd.h"
  25 #include "ap/dfs.h"
  26 #include "eapol_supp/eapol_supp_sm.h"
  27 #include "rsn_supp/wpa.h"
  28 #include "wpa_supplicant_i.h"
  29 #include "driver_i.h"
  30 #include "ap.h"
  31 #include "config_ssid.h"
  32 #include "config.h"
  33 #include "notify.h"
  34 #include "scan.h"
  35 #include "bss.h"
  36 #include "offchannel.h"
  37 #include "wps_supplicant.h"
  38 #include "p2p_supplicant.h"
  39 #include "wifi_display.h"
  40
  41
  42 /*
  43  * How many times to try to scan to find the GO before giving up on join
  44  * request.
  45  */
  46 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  47
  48 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
  49
  50 /**
  51  * Defines time interval in seconds when a GO needs to evacuate a frequency that
  52  * it is currently using, but is no longer valid for P2P use cases.
  53  */
  54 #define P2P_GO_FREQ_CHANGE_TIME 5
  55
  56 /**
  57  * Defines CSA parameters which are used when GO evacuates the no longer valid
  58  * channel (and if the driver supports channel switch).
  59  */
  60 #define P2P_GO_CSA_COUNT 7
  61 #define P2P_GO_CSA_BLOCK_TX 0
  62
  63 #ifndef P2P_MAX_CLIENT_IDLE
  64 /*
  65  * How many seconds to try to reconnect to the GO when connection in P2P client
  66  * role has been lost.
  67  */
  68 #define P2P_MAX_CLIENT_IDLE 10
  69 #endif /* P2P_MAX_CLIENT_IDLE */
  70
  71 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  72 /*
  73  * How many seconds to wait for initial 4-way handshake to get completed after
  74  * WPS provisioning step or after the re-invocation of a persistent group on a
  75  * P2P Client.
  76  */
  77 #define P2P_MAX_INITIAL_CONN_WAIT 10
  78 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  79
  80 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
  81 /*
  82  * How many seconds to wait for initial 4-way handshake to get completed after
  83  * WPS provisioning step on the GO. This controls the extra time the P2P
  84  * operation is considered to be in progress (e.g., to delay other scans) after
  85  * WPS provisioning has been completed on the GO during group formation.
  86  */
  87 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
  88 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
  89
  90 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
  91 /*
  92  * How many seconds to wait for initial 4-way handshake to get completed after
  93  * re-invocation of a persistent group on the GO when the client is expected
  94  * to connect automatically (no user interaction).
  95  */
  96 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
  97 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
  98
  99 #define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"
 100
 101 /*
 102  * How many seconds to wait to re-attempt to move GOs, in case previous attempt
 103  * was not possible.
 104  */
 105 #define P2P_RECONSIDER_GO_MOVE_DELAY 30
 106
 107 enum p2p_group_removal_reason {
 108         P2P_GROUP_REMOVAL_UNKNOWN,
 109         P2P_GROUP_REMOVAL_SILENT,
 110         P2P_GROUP_REMOVAL_FORMATION_FAILED,
 111         P2P_GROUP_REMOVAL_REQUESTED,
 112         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
 113         P2P_GROUP_REMOVAL_UNAVAILABLE,
 114         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
 115         P2P_GROUP_REMOVAL_PSK_FAILURE,
 116         P2P_GROUP_REMOVAL_FREQ_CONFLICT,
 117         P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL
 118 };
 119
 120
 121 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
 122 static struct wpa_supplicant *
 123 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
 124                          int go);
 125 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
 126                                const u8 *ssid, size_t ssid_len);
 127 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
 128                                 int *force_freq, int *pref_freq, int go,
 129                                 unsigned int *pref_freq_list,
 130                                 unsigned int *num_pref_freq);
 131 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 132                                    const u8 *ssid, size_t ssid_len);
 133 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 134 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 135                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 136                          int auto_join, int freq,
 137                          const u8 *ssid, size_t ssid_len);
 138 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 139 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 140 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 141 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 142 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 143                                              void *timeout_ctx);
 144 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 145 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 146                                        int group_added);
 147 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 148 static void wpas_stop_listen(void *ctx);
 149 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
 150 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
 151 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 152                                         enum wpa_driver_if_type type);
 153 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
 154                                             int already_deleted);
 155 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
 156                                              struct wpa_used_freq_data *freqs,
 157                                              unsigned int num);
 158 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx);
 159 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq);
 160 static void
 161 wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
 162                              struct wpa_used_freq_data *freqs, unsigned int num,
 163                              enum wpas_p2p_channel_update_trig trig);
 164 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx);
 165
 166
 167 /*
 168  * Get the number of concurrent channels that the HW can operate, but that are
 169  * currently not in use by any of the wpa_supplicant interfaces.
 170  */
 171 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 172 {
 173         int *freqs;
 174         int num, unused;
 175
 176         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 177         if (!freqs)
 178                 return -1;
 179
 180         num = get_shared_radio_freqs(wpa_s, freqs,
 181                                      wpa_s->num_multichan_concurrent);
 182         os_free(freqs);
 183
 184         unused = wpa_s->num_multichan_concurrent - num;
 185         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 186         return unused;
 187 }
 188
 189
 190 /*
 191  * Get the frequencies that are currently in use by one or more of the virtual
 192  * interfaces, and that are also valid for P2P operation.
 193  */
 194 static unsigned int
 195 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 196                           struct wpa_used_freq_data *p2p_freqs,
 197                           unsigned int len)
 198 {
 199         struct wpa_used_freq_data *freqs;
 200         unsigned int num, i, j;
 201
 202         freqs = os_calloc(wpa_s->num_multichan_concurrent,
 203                           sizeof(struct wpa_used_freq_data));
 204         if (!freqs)
 205                 return 0;
 206
 207         num = get_shared_radio_freqs_data(wpa_s, freqs,
 208                                           wpa_s->num_multichan_concurrent);
 209
 210         os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
 211
 212         for (i = 0, j = 0; i < num && j < len; i++) {
 213                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
 214                         p2p_freqs[j++] = freqs[i];
 215         }
 216
 217         os_free(freqs);
 218
 219         dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
 220
 221         return j;
 222 }
 223
 224
 225 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 226                                              int freq)
 227 {
 228         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 229                 return;
 230
 231         /* Use the wpa_s used to control the P2P Device operation */
 232         wpa_s = wpa_s->global->p2p_init_wpa_s;
 233
 234         if (wpa_s->conf->p2p_ignore_shared_freq &&
 235             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 236             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 237                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 238                            freq);
 239                 freq = 0;
 240         }
 241         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 242 }
 243
 244
 245 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 246                                       struct wpa_scan_results *scan_res)
 247 {
 248         size_t i;
 249
 250         if (wpa_s->p2p_scan_work) {
 251                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 252                 wpa_s->p2p_scan_work = NULL;
 253                 radio_work_done(work);
 254         }
 255
 256         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 257                 return;
 258
 259         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 260                    (int) scan_res->num);
 261
 262         for (i = 0; i < scan_res->num; i++) {
 263                 struct wpa_scan_res *bss = scan_res->res[i];
 264                 struct os_reltime time_tmp_age, entry_ts;
 265                 const u8 *ies;
 266                 size_t ies_len;
 267
 268                 time_tmp_age.sec = bss->age / 1000;
 269                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 270                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 271
 272                 ies = (const u8 *) (bss + 1);
 273                 ies_len = bss->ie_len;
 274                 if (bss->beacon_ie_len > 0 &&
 275                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 276                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 277                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 278                                    MACSTR, MAC2STR(bss->bssid));
 279                         ies = ies + ies_len;
 280                         ies_len = bss->beacon_ie_len;
 281                 }
 282
 283
 284                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 285                                          bss->freq, &entry_ts, bss->level,
 286                                          ies, ies_len) > 0)
 287                         break;
 288         }
 289
 290         p2p_scan_res_handled(wpa_s->global->p2p);
 291 }
 292
 293
 294 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 295 {
 296         struct wpa_supplicant *wpa_s = work->wpa_s;
 297         struct wpa_driver_scan_params *params = work->ctx;
 298         int ret;
 299
 300         if (deinit) {
 301                 if (!work->started) {
 302                         wpa_scan_free_params(params);
 303                         return;
 304                 }
 305
 306                 wpa_s->p2p_scan_work = NULL;
 307                 return;
 308         }
 309
 310         ret = wpa_drv_scan(wpa_s, params);
 311         wpa_scan_free_params(params);
 312         work->ctx = NULL;
 313         if (ret) {
 314                 radio_work_done(work);
 315                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 316                 return;
 317         }
 318
 319         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 320         os_get_reltime(&wpa_s->scan_trigger_time);
 321         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 322         wpa_s->own_scan_requested = 1;
 323         wpa_s->p2p_scan_work = work;
 324 }
 325
 326
 327 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 328                                           int freq)
 329 {
 330         if (wpa_s->global->p2p_24ghz_social_channels &&
 331             (freq == 2412 || freq == 2437 || freq == 2462)) {
 332                 /*
 333                  * Search all social channels regardless of whether these have
 334                  * been disabled for P2P operating channel use to avoid missing
 335                  * peers.
 336                  */
 337                 return 1;
 338         }
 339         return p2p_supported_freq(wpa_s->global->p2p, freq);
 340 }
 341
 342
 343 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 344                          unsigned int num_req_dev_types,
 345                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 346 {
 347         struct wpa_supplicant *wpa_s = ctx;
 348         struct wpa_driver_scan_params *params = NULL;
 349         struct wpabuf *wps_ie, *ies;
 350         unsigned int num_channels = 0;
 351         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 352         size_t ielen;
 353         u8 *n, i;
 354         unsigned int bands;
 355
 356         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 357                 return -1;
 358
 359         if (wpa_s->p2p_scan_work) {
 360                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 361                 return -1;
 362         }
 363
 364         params = os_zalloc(sizeof(*params));
 365         if (params == NULL)
 366                 return -1;
 367
 368         /* P2P Wildcard SSID */
 369         params->num_ssids = 1;
 370         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 371         if (n == NULL)
 372                 goto fail;
 373         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 374         params->ssids[0].ssid = n;
 375         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 376
 377         wpa_s->wps->dev.p2p = 1;
 378         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 379                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 380                                         num_req_dev_types, req_dev_types);
 381         if (wps_ie == NULL)
 382                 goto fail;
 383
 384         switch (type) {
 385         case P2P_SCAN_SOCIAL:
 386                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 387                                           sizeof(int));
 388                 if (params->freqs == NULL)
 389                         goto fail;
 390                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 391                         if (wpas_p2p_search_social_channel(
 392                                     wpa_s, social_channels_freq[i]))
 393                                 params->freqs[num_channels++] =
 394                                         social_channels_freq[i];
 395                 }
 396                 params->freqs[num_channels++] = 0;
 397                 break;
 398         case P2P_SCAN_FULL:
 399                 break;
 400         case P2P_SCAN_SPECIFIC:
 401                 params->freqs = os_calloc(2, sizeof(int));
 402                 if (params->freqs == NULL)
 403                         goto fail;
 404                 params->freqs[0] = freq;
 405                 params->freqs[1] = 0;
 406                 break;
 407         case P2P_SCAN_SOCIAL_PLUS_ONE:
 408                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 409                                           sizeof(int));
 410                 if (params->freqs == NULL)
 411                         goto fail;
 412                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 413                         if (wpas_p2p_search_social_channel(
 414                                     wpa_s, social_channels_freq[i]))
 415                                 params->freqs[num_channels++] =
 416                                         social_channels_freq[i];
 417                 }
 418                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 419                         params->freqs[num_channels++] = freq;
 420                 params->freqs[num_channels++] = 0;
 421                 break;
 422         }
 423
 424         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 425         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 426         if (ies == NULL) {
 427                 wpabuf_free(wps_ie);
 428                 goto fail;
 429         }
 430         wpabuf_put_buf(ies, wps_ie);
 431         wpabuf_free(wps_ie);
 432
 433         bands = wpas_get_bands(wpa_s, params->freqs);
 434         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id, bands);
 435
 436         params->p2p_probe = 1;
 437         n = os_malloc(wpabuf_len(ies));
 438         if (n == NULL) {
 439                 wpabuf_free(ies);
 440                 goto fail;
 441         }
 442         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 443         params->extra_ies = n;
 444         params->extra_ies_len = wpabuf_len(ies);
 445         wpabuf_free(ies);
 446
 447         radio_remove_works(wpa_s, "p2p-scan", 0);
 448         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 449                            params) < 0)
 450                 goto fail;
 451         return 0;
 452
 453 fail:
 454         wpa_scan_free_params(params);
 455         return -1;
 456 }
 457
 458
 459 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 460 {
 461         switch (p2p_group_interface) {
 462         case P2P_GROUP_INTERFACE_PENDING:
 463                 return WPA_IF_P2P_GROUP;
 464         case P2P_GROUP_INTERFACE_GO:
 465                 return WPA_IF_P2P_GO;
 466         case P2P_GROUP_INTERFACE_CLIENT:
 467                 return WPA_IF_P2P_CLIENT;
 468         }
 469
 470         return WPA_IF_P2P_GROUP;
 471 }
 472
 473
 474 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 475                                                   const u8 *ssid,
 476                                                   size_t ssid_len, int *go)
 477 {
 478         struct wpa_ssid *s;
 479
 480         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 481                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 482                         if (s->disabled != 0 || !s->p2p_group ||
 483                             s->ssid_len != ssid_len ||
 484                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 485                                 continue;
 486                         if (s->mode == WPAS_MODE_P2P_GO &&
 487                             s != wpa_s->current_ssid)
 488                                 continue;
 489                         if (go)
 490                                 *go = s->mode == WPAS_MODE_P2P_GO;
 491                         return wpa_s;
 492                 }
 493         }
 494
 495         return NULL;
 496 }
 497
 498
 499 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 500 {
 501         struct wpa_supplicant *wpa_s = eloop_ctx;
 502         wpa_printf(MSG_DEBUG,
 503                    "P2P: Complete previously requested removal of %s",
 504                    wpa_s->ifname);
 505         wpas_p2p_disconnect(wpa_s);
 506 }
 507
 508
 509 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 510                                       struct wpa_supplicant *calling_wpa_s)
 511 {
 512         if (calling_wpa_s == wpa_s && wpa_s &&
 513             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 514                 /*
 515                  * The calling wpa_s instance is going to be removed. Do that
 516                  * from an eloop callback to keep the instance available until
 517                  * the caller has returned. This my be needed, e.g., to provide
 518                  * control interface responses on the per-interface socket.
 519                  */
 520                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 521                                            wpa_s, NULL) < 0)
 522                         return -1;
 523                 return 0;
 524         }
 525
 526         return wpas_p2p_disconnect(wpa_s);
 527 }
 528
 529
 530 /* Determine total number of clients in active groups where we are the GO */
 531 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 532 {
 533         unsigned int count = 0;
 534         struct wpa_ssid *s;
 535
 536         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 537                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 538                         wpa_printf(MSG_DEBUG,
 539                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 540                                    wpa_s, s, s->disabled, s->p2p_group,
 541                                    s->mode);
 542                         if (!s->disabled && s->p2p_group &&
 543                             s->mode == WPAS_MODE_P2P_GO) {
 544                                 count += p2p_get_group_num_members(
 545                                         wpa_s->p2p_group);
 546                         }
 547                 }
 548         }
 549
 550         return count;
 551 }
 552
 553
 554 static unsigned int p2p_is_active_persistent_group(struct wpa_supplicant *wpa_s)
 555 {
 556         return !wpa_s->p2p_mgmt && wpa_s->current_ssid &&
 557                 !wpa_s->current_ssid->disabled &&
 558                 wpa_s->current_ssid->p2p_group &&
 559                 wpa_s->current_ssid->p2p_persistent_group;
 560 }
 561
 562
 563 static unsigned int p2p_is_active_persistent_go(struct wpa_supplicant *wpa_s)
 564 {
 565         return p2p_is_active_persistent_group(wpa_s) &&
 566                 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO;
 567 }
 568
 569
 570 /* Find an interface for a P2P group where we are the GO */
 571 static struct wpa_supplicant *
 572 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 573 {
 574         struct wpa_supplicant *save = NULL;
 575
 576         if (!wpa_s)
 577                 return NULL;
 578
 579         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 580                 if (!p2p_is_active_persistent_go(wpa_s))
 581                         continue;
 582
 583                 /* Prefer a group with connected clients */
 584                 if (p2p_get_group_num_members(wpa_s->p2p_group))
 585                         return wpa_s;
 586                 save = wpa_s;
 587         }
 588
 589         /* No group with connected clients, so pick the one without (if any) */
 590         return save;
 591 }
 592
 593
 594 static unsigned int p2p_is_active_persistent_cli(struct wpa_supplicant *wpa_s)
 595 {
 596         return p2p_is_active_persistent_group(wpa_s) &&
 597                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
 598 }
 599
 600
 601 /* Find an interface for a P2P group where we are the P2P Client */
 602 static struct wpa_supplicant *
 603 wpas_p2p_get_cli_group(struct wpa_supplicant *wpa_s)
 604 {
 605         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 606                 if (p2p_is_active_persistent_cli(wpa_s))
 607                         return wpa_s;
 608         }
 609
 610         return NULL;
 611 }
 612
 613
 614 /* Find a persistent group where we are the GO */
 615 static struct wpa_ssid *
 616 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
 617 {
 618         struct wpa_ssid *s;
 619
 620         for (s = wpa_s->conf->ssid; s; s = s->next) {
 621                 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
 622                         return s;
 623         }
 624
 625         return NULL;
 626 }
 627
 628
 629 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role,
 630                                 unsigned int *force_freq,
 631                                 unsigned int *pref_freq)
 632 {
 633         struct wpa_supplicant *wpa_s = ctx;
 634         struct wpa_ssid *s;
 635         u8 conncap = P2PS_SETUP_NONE;
 636         unsigned int owned_members = 0;
 637         struct wpa_supplicant *go_wpa_s, *cli_wpa_s;
 638         struct wpa_ssid *persistent_go;
 639         int p2p_no_group_iface;
 640         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
 641
 642         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 643
 644         if (force_freq)
 645                 *force_freq = 0;
 646         if (pref_freq)
 647                 *pref_freq = 0;
 648
 649         size = P2P_MAX_PREF_CHANNELS;
 650         if (force_freq && pref_freq &&
 651             !wpas_p2p_setup_freqs(wpa_s, 0, (int *) force_freq,
 652                                   (int *) pref_freq, 0, pref_freq_list, &size))
 653                 wpas_p2p_set_own_freq_preference(wpa_s,
 654                                                  *force_freq ? *force_freq :
 655                                                  *pref_freq);
 656
 657         /*
 658          * For non-concurrent capable devices:
 659          * If persistent_go, then no new.
 660          * If GO, then no client.
 661          * If client, then no GO.
 662          */
 663         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 664         if (go_wpa_s)
 665                 owned_members = p2p_get_group_num_members(go_wpa_s->p2p_group);
 666         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 667         p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s);
 668         cli_wpa_s = wpas_p2p_get_cli_group(wpa_s);
 669
 670         wpa_printf(MSG_DEBUG,
 671                    "P2P: GO(iface)=%p members=%u CLI(iface)=%p persistent(ssid)=%p",
 672                    go_wpa_s, owned_members, cli_wpa_s, persistent_go);
 673
 674         /* If not concurrent, restrict our choices */
 675         if (p2p_no_group_iface) {
 676                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 677
 678                 if (cli_wpa_s)
 679                         return P2PS_SETUP_NONE;
 680
 681                 if (go_wpa_s) {
 682                         if (role == P2PS_SETUP_CLIENT ||
 683                             incoming == P2PS_SETUP_GROUP_OWNER ||
 684                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 685                                 return P2PS_SETUP_NONE;
 686
 687                         return P2PS_SETUP_GROUP_OWNER;
 688                 }
 689
 690                 if (persistent_go) {
 691                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 692                                 if (!incoming)
 693                                         return P2PS_SETUP_GROUP_OWNER |
 694                                                 P2PS_SETUP_CLIENT;
 695                                 if (incoming == P2PS_SETUP_NEW) {
 696                                         u8 r;
 697
 698                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 699                                             (r & 1))
 700                                                 return P2PS_SETUP_CLIENT;
 701                                         return P2PS_SETUP_GROUP_OWNER;
 702                                 }
 703                         }
 704                 }
 705         }
 706
 707         /* If a required role has been specified, handle it here */
 708         if (role && role != P2PS_SETUP_NEW) {
 709                 switch (incoming) {
 710                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 711                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 712                         /*
 713                          * Peer has an active GO, so if the role allows it and
 714                          * we do not have any active roles, become client.
 715                          */
 716                         if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s &&
 717                             !cli_wpa_s)
 718                                 return P2PS_SETUP_CLIENT;
 719
 720                         /* fall through */
 721
 722                 case P2PS_SETUP_NONE:
 723                 case P2PS_SETUP_NEW:
 724                         conncap = role;
 725                         goto grp_owner;
 726
 727                 case P2PS_SETUP_GROUP_OWNER:
 728                         /*
 729                          * Must be a complimentary role - cannot be a client to
 730                          * more than one peer.
 731                          */
 732                         if (incoming == role || cli_wpa_s)
 733                                 return P2PS_SETUP_NONE;
 734
 735                         return P2PS_SETUP_CLIENT;
 736
 737                 case P2PS_SETUP_CLIENT:
 738                         /* Must be a complimentary role */
 739                         if (incoming != role) {
 740                                 conncap = P2PS_SETUP_GROUP_OWNER;
 741                                 goto grp_owner;
 742                         }
 743
 744                 default:
 745                         return P2PS_SETUP_NONE;
 746                 }
 747         }
 748
 749         /*
 750          * For now, we only will support ownership of one group, and being a
 751          * client of one group. Therefore, if we have either an existing GO
 752          * group, or an existing client group, we will not do a new GO
 753          * negotiation, but rather try to re-use the existing groups.
 754          */
 755         switch (incoming) {
 756         case P2PS_SETUP_NONE:
 757         case P2PS_SETUP_NEW:
 758                 if (cli_wpa_s)
 759                         conncap = P2PS_SETUP_GROUP_OWNER;
 760                 else if (!owned_members)
 761                         conncap = P2PS_SETUP_NEW;
 762                 else if (incoming == P2PS_SETUP_NONE)
 763                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 764                 else
 765                         conncap = P2PS_SETUP_CLIENT;
 766                 break;
 767
 768         case P2PS_SETUP_CLIENT:
 769                 conncap = P2PS_SETUP_GROUP_OWNER;
 770                 break;
 771
 772         case P2PS_SETUP_GROUP_OWNER:
 773                 if (!cli_wpa_s)
 774                         conncap = P2PS_SETUP_CLIENT;
 775                 break;
 776
 777         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 778         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 779                 if (cli_wpa_s)
 780                         conncap = P2PS_SETUP_GROUP_OWNER;
 781                 else {
 782                         u8 r;
 783
 784                         if (os_get_random(&r, sizeof(r)) < 0 ||
 785                             (r & 1))
 786                                 conncap = P2PS_SETUP_CLIENT;
 787                         else
 788                                 conncap = P2PS_SETUP_GROUP_OWNER;
 789                 }
 790                 break;
 791
 792         default:
 793                 return P2PS_SETUP_NONE;
 794         }
 795
 796 grp_owner:
 797         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 798             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 799                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 800                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 801
 802                 s = wpas_p2p_get_persistent_go(wpa_s);
 803                 if (!s && !go_wpa_s && p2p_no_group_iface) {
 804                         p2p_set_intended_addr(wpa_s->global->p2p,
 805                                               wpa_s->p2p_mgmt ?
 806                                               wpa_s->parent->own_addr :
 807                                               wpa_s->own_addr);
 808                 } else if (!s && !go_wpa_s) {
 809                         if (wpas_p2p_add_group_interface(wpa_s,
 810                                                          WPA_IF_P2P_GO) < 0) {
 811                                 wpa_printf(MSG_ERROR,
 812                                            "P2P: Failed to allocate a new interface for the group");
 813                                 return P2PS_SETUP_NONE;
 814                         }
 815                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 816                         p2p_set_intended_addr(wpa_s->global->p2p,
 817                                               wpa_s->pending_interface_addr);
 818                 }
 819         }
 820
 821         return conncap;
 822 }
 823
 824
 825 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 826                                  enum p2p_group_removal_reason removal_reason)
 827 {
 828         struct wpa_ssid *ssid;
 829         char *gtype;
 830         const char *reason;
 831
 832         ssid = wpa_s->current_ssid;
 833         if (ssid == NULL) {
 834                 /*
 835                  * The current SSID was not known, but there may still be a
 836                  * pending P2P group interface waiting for provisioning or a
 837                  * P2P group that is trying to reconnect.
 838                  */
 839                 ssid = wpa_s->conf->ssid;
 840                 while (ssid) {
 841                         if (ssid->p2p_group && ssid->disabled != 2)
 842                                 break;
 843                         ssid = ssid->next;
 844                 }
 845                 if (ssid == NULL &&
 846                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 847                 {
 848                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 849                                    "not found");
 850                         return -1;
 851                 }
 852         }
 853         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 854                 gtype = "GO";
 855         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 856                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 857                 wpa_s->reassociate = 0;
 858                 wpa_s->disconnected = 1;
 859                 gtype = "client";
 860         } else
 861                 gtype = "GO";
 862
 863         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 864                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 865
 866         if (os_strcmp(gtype, "client") == 0) {
 867                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 868                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 869                                                 wpa_s, NULL)) {
 870                         wpa_printf(MSG_DEBUG,
 871                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 872                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 873                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 874                                              wpa_s, NULL);
 875                 }
 876         }
 877
 878         if (wpa_s->cross_connect_in_use) {
 879                 wpa_s->cross_connect_in_use = 0;
 880                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
 881                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 882                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 883         }
 884         switch (removal_reason) {
 885         case P2P_GROUP_REMOVAL_REQUESTED:
 886                 reason = " reason=REQUESTED";
 887                 break;
 888         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 889                 reason = " reason=FORMATION_FAILED";
 890                 break;
 891         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 892                 reason = " reason=IDLE";
 893                 break;
 894         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 895                 reason = " reason=UNAVAILABLE";
 896                 break;
 897         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 898                 reason = " reason=GO_ENDING_SESSION";
 899                 break;
 900         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 901                 reason = " reason=PSK_FAILURE";
 902                 break;
 903         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 904                 reason = " reason=FREQ_CONFLICT";
 905                 break;
 906         default:
 907                 reason = "";
 908                 break;
 909         }
 910         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 911                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
 912                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 913                                wpa_s->ifname, gtype, reason);
 914         }
 915
 916         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 917                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 918         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 919                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 920         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 921                                  wpa_s->p2pdev, NULL) > 0) {
 922                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 923                            "timeout");
 924                 wpa_s->p2p_in_provisioning = 0;
 925                 wpas_p2p_group_formation_failed(wpa_s, 1);
 926         }
 927
 928         wpa_s->p2p_in_invitation = 0;
 929         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
 930         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
 931
 932         /*
 933          * Make sure wait for the first client does not remain active after the
 934          * group has been removed.
 935          */
 936         wpa_s->global->p2p_go_wait_client.sec = 0;
 937
 938         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 939                 struct wpa_global *global;
 940                 char *ifname;
 941                 enum wpa_driver_if_type type;
 942                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 943                         wpa_s->ifname);
 944                 global = wpa_s->global;
 945                 ifname = os_strdup(wpa_s->ifname);
 946                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 947                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 948                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 949                 wpa_s = global->ifaces;
 950                 if (wpa_s && ifname)
 951                         wpa_drv_if_remove(wpa_s, type, ifname);
 952                 os_free(ifname);
 953                 return 1;
 954         }
 955
 956         /*
 957          * The primary interface was used for P2P group operations, so
 958          * need to reset its p2pdev.
 959          */
 960         wpa_s->p2pdev = wpa_s->parent;
 961
 962         if (!wpa_s->p2p_go_group_formation_completed) {
 963                 wpa_s->global->p2p_group_formation = NULL;
 964                 wpa_s->p2p_in_provisioning = 0;
 965         }
 966
 967         wpa_s->show_group_started = 0;
 968         os_free(wpa_s->go_params);
 969         wpa_s->go_params = NULL;
 970
 971         os_free(wpa_s->p2p_group_common_freqs);
 972         wpa_s->p2p_group_common_freqs = NULL;
 973         wpa_s->p2p_group_common_freqs_num = 0;
 974
 975         wpa_s->waiting_presence_resp = 0;
 976
 977         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 978         if (ssid && (ssid->p2p_group ||
 979                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 980                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 981                 int id = ssid->id;
 982                 if (ssid == wpa_s->current_ssid) {
 983                         wpa_sm_set_config(wpa_s->wpa, NULL);
 984                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 985                         wpa_s->current_ssid = NULL;
 986                 }
 987                 /*
 988                  * Networks objects created during any P2P activities are not
 989                  * exposed out as they might/will confuse certain non-P2P aware
 990                  * applications since these network objects won't behave like
 991                  * regular ones.
 992                  *
 993                  * Likewise, we don't send out network removed signals for such
 994                  * network objects.
 995                  */
 996                 wpa_config_remove_network(wpa_s->conf, id);
 997                 wpa_supplicant_clear_status(wpa_s);
 998                 wpa_supplicant_cancel_sched_scan(wpa_s);
 999         } else {
1000                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
1001                            "found");
1002         }
1003         if (wpa_s->ap_iface)
1004                 wpa_supplicant_ap_deinit(wpa_s);
1005         else
1006                 wpa_drv_deinit_p2p_cli(wpa_s);
1007
1008         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1009
1010         return 0;
1011 }
1012
1013
1014 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
1015                                      u8 *go_dev_addr,
1016                                      const u8 *ssid, size_t ssid_len)
1017 {
1018         struct wpa_bss *bss;
1019         const u8 *bssid;
1020         struct wpabuf *p2p;
1021         u8 group_capab;
1022         const u8 *addr;
1023
1024         if (wpa_s->go_params)
1025                 bssid = wpa_s->go_params->peer_interface_addr;
1026         else
1027                 bssid = wpa_s->bssid;
1028
1029         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
1030         if (bss == NULL && wpa_s->go_params &&
1031             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
1032                 bss = wpa_bss_get_p2p_dev_addr(
1033                         wpa_s, wpa_s->go_params->peer_device_addr);
1034         if (bss == NULL) {
1035                 u8 iface_addr[ETH_ALEN];
1036                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1037                                            iface_addr) == 0)
1038                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1039         }
1040         if (bss == NULL) {
1041                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1042                            "group is persistent - BSS " MACSTR " not found",
1043                            MAC2STR(bssid));
1044                 return 0;
1045         }
1046
1047         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1048         if (p2p == NULL)
1049                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1050                                                          P2P_IE_VENDOR_TYPE);
1051         if (p2p == NULL) {
1052                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1053                            "group is persistent - BSS " MACSTR
1054                            " did not include P2P IE", MAC2STR(bssid));
1055                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1056                             (u8 *) (bss + 1), bss->ie_len);
1057                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1058                             ((u8 *) bss + 1) + bss->ie_len,
1059                             bss->beacon_ie_len);
1060                 return 0;
1061         }
1062
1063         group_capab = p2p_get_group_capab(p2p);
1064         addr = p2p_get_go_dev_addr(p2p);
1065         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1066                    "group_capab=0x%x", group_capab);
1067         if (addr) {
1068                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1069                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1070                            MAC2STR(addr));
1071         } else
1072                 os_memset(go_dev_addr, 0, ETH_ALEN);
1073         wpabuf_free(p2p);
1074
1075         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1076                    "go_dev_addr=" MACSTR,
1077                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1078
1079         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1080 }
1081
1082
1083 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1084                                            struct wpa_ssid *ssid,
1085                                            const u8 *go_dev_addr)
1086 {
1087         struct wpa_ssid *s;
1088         int changed = 0;
1089
1090         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1091                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1092         for (s = wpa_s->conf->ssid; s; s = s->next) {
1093                 if (s->disabled == 2 &&
1094                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1095                     s->ssid_len == ssid->ssid_len &&
1096                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1097                         break;
1098         }
1099
1100         if (s) {
1101                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1102                            "entry");
1103                 if (ssid->passphrase && !s->passphrase)
1104                         changed = 1;
1105                 else if (ssid->passphrase && s->passphrase &&
1106                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1107                         changed = 1;
1108         } else {
1109                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1110                            "entry");
1111                 changed = 1;
1112                 s = wpa_config_add_network(wpa_s->conf);
1113                 if (s == NULL)
1114                         return -1;
1115
1116                 /*
1117                  * Instead of network_added we emit persistent_group_added
1118                  * notification. Also to keep the defense checks in
1119                  * persistent_group obj registration method, we set the
1120                  * relevant flags in s to designate it as a persistent group.
1121                  */
1122                 s->p2p_group = 1;
1123                 s->p2p_persistent_group = 1;
1124                 wpas_notify_persistent_group_added(wpa_s, s);
1125                 wpa_config_set_network_defaults(s);
1126         }
1127
1128         s->p2p_group = 1;
1129         s->p2p_persistent_group = 1;
1130         s->disabled = 2;
1131         s->bssid_set = 1;
1132         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1133         s->mode = ssid->mode;
1134         s->auth_alg = WPA_AUTH_ALG_OPEN;
1135         s->key_mgmt = WPA_KEY_MGMT_PSK;
1136         s->proto = WPA_PROTO_RSN;
1137         s->pbss = ssid->pbss;
1138         s->pairwise_cipher = ssid->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP;
1139         s->export_keys = 1;
1140         if (ssid->passphrase) {
1141                 os_free(s->passphrase);
1142                 s->passphrase = os_strdup(ssid->passphrase);
1143         }
1144         if (ssid->psk_set) {
1145                 s->psk_set = 1;
1146                 os_memcpy(s->psk, ssid->psk, 32);
1147         }
1148         if (s->passphrase && !s->psk_set)
1149                 wpa_config_update_psk(s);
1150         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1151                 os_free(s->ssid);
1152                 s->ssid = os_malloc(ssid->ssid_len);
1153         }
1154         if (s->ssid) {
1155                 s->ssid_len = ssid->ssid_len;
1156                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1157         }
1158         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1159                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1160                 wpa_s->global->add_psk = NULL;
1161                 changed = 1;
1162         }
1163
1164         if (changed && wpa_s->conf->update_config &&
1165             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1166                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1167         }
1168
1169         return s->id;
1170 }
1171
1172
1173 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1174                                                  const u8 *addr)
1175 {
1176         struct wpa_ssid *ssid, *s;
1177         u8 *n;
1178         size_t i;
1179         int found = 0;
1180         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1181
1182         ssid = wpa_s->current_ssid;
1183         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1184             !ssid->p2p_persistent_group)
1185                 return;
1186
1187         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1188                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1189                         continue;
1190
1191                 if (s->ssid_len == ssid->ssid_len &&
1192                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1193                         break;
1194         }
1195
1196         if (s == NULL)
1197                 return;
1198
1199         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1200                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1201                               ETH_ALEN) != 0)
1202                         continue;
1203
1204                 if (i == s->num_p2p_clients - 1)
1205                         return; /* already the most recent entry */
1206
1207                 /* move the entry to mark it most recent */
1208                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1209                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1210                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1211                 os_memcpy(s->p2p_client_list +
1212                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1213                           ETH_ALEN);
1214                 os_memset(s->p2p_client_list +
1215                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1216                           0xff, ETH_ALEN);
1217                 found = 1;
1218                 break;
1219         }
1220
1221         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1222                 n = os_realloc_array(s->p2p_client_list,
1223                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1224                 if (n == NULL)
1225                         return;
1226                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1227                           ETH_ALEN);
1228                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1229                           0xff, ETH_ALEN);
1230                 s->p2p_client_list = n;
1231                 s->num_p2p_clients++;
1232         } else if (!found && s->p2p_client_list) {
1233                 /* Not enough room for an additional entry - drop the oldest
1234                  * entry */
1235                 os_memmove(s->p2p_client_list,
1236                            s->p2p_client_list + 2 * ETH_ALEN,
1237                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1238                 os_memcpy(s->p2p_client_list +
1239                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1240                           addr, ETH_ALEN);
1241                 os_memset(s->p2p_client_list +
1242                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1243                           0xff, ETH_ALEN);
1244         }
1245
1246         if (p2p_wpa_s->conf->update_config &&
1247             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1248                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1249 }
1250
1251
1252 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1253                                    int go, struct wpa_ssid *ssid, int freq,
1254                                    const u8 *psk, const char *passphrase,
1255                                    const u8 *go_dev_addr, int persistent,
1256                                    const char *extra)
1257 {
1258         const char *ssid_txt;
1259         char psk_txt[65];
1260
1261         if (psk)
1262                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1263         else
1264                 psk_txt[0] = '\0';
1265
1266         if (ssid)
1267                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1268         else
1269                 ssid_txt = "";
1270
1271         if (passphrase && passphrase[0] == '\0')
1272                 passphrase = NULL;
1273
1274         /*
1275          * Include PSK/passphrase only in the control interface message and
1276          * leave it out from the debug log entry.
1277          */
1278         wpa_msg_global_ctrl(wpa_s->p2pdev, MSG_INFO,
1279                             P2P_EVENT_GROUP_STARTED
1280                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1281                             MACSTR "%s%s",
1282                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1283                             psk ? " psk=" : "", psk_txt,
1284                             passphrase ? " passphrase=\"" : "",
1285                             passphrase ? passphrase : "",
1286                             passphrase ? "\"" : "",
1287                             MAC2STR(go_dev_addr),
1288                             persistent ? " [PERSISTENT]" : "", extra);
1289         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1290                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1291                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1292                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1293                    extra);
1294 }
1295
1296
1297 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1298                                            int success, int already_deleted)
1299 {
1300         struct wpa_ssid *ssid;
1301         int client;
1302         int persistent;
1303         u8 go_dev_addr[ETH_ALEN];
1304         int network_id = -1;
1305
1306         /*
1307          * This callback is likely called for the main interface. Update wpa_s
1308          * to use the group interface if a new interface was created for the
1309          * group.
1310          */
1311         if (wpa_s->global->p2p_group_formation)
1312                 wpa_s = wpa_s->global->p2p_group_formation;
1313         if (wpa_s->p2p_go_group_formation_completed) {
1314                 wpa_s->global->p2p_group_formation = NULL;
1315                 wpa_s->p2p_in_provisioning = 0;
1316         }
1317         wpa_s->p2p_in_invitation = 0;
1318         wpa_s->group_formation_reported = 1;
1319
1320         if (!success) {
1321                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1322                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1323                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1324                 if (already_deleted)
1325                         return;
1326                 wpas_p2p_group_delete(wpa_s,
1327                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1328                 return;
1329         }
1330
1331         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1332                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1333
1334         ssid = wpa_s->current_ssid;
1335         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1336                 ssid->mode = WPAS_MODE_P2P_GO;
1337                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1338                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1339         }
1340
1341         persistent = 0;
1342         if (ssid) {
1343                 client = ssid->mode == WPAS_MODE_INFRA;
1344                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1345                         persistent = ssid->p2p_persistent_group;
1346                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1347                                   ETH_ALEN);
1348                 } else
1349                         persistent = wpas_p2p_persistent_group(wpa_s,
1350                                                                go_dev_addr,
1351                                                                ssid->ssid,
1352                                                                ssid->ssid_len);
1353         } else {
1354                 client = wpa_s->p2p_group_interface ==
1355                         P2P_GROUP_INTERFACE_CLIENT;
1356                 os_memset(go_dev_addr, 0, ETH_ALEN);
1357         }
1358
1359         wpa_s->show_group_started = 0;
1360         if (client) {
1361                 /*
1362                  * Indicate event only after successfully completed 4-way
1363                  * handshake, i.e., when the interface is ready for data
1364                  * packets.
1365                  */
1366                 wpa_s->show_group_started = 1;
1367         } else {
1368                 wpas_p2p_group_started(wpa_s, 1, ssid,
1369                                        ssid ? ssid->frequency : 0,
1370                                        ssid && ssid->passphrase == NULL &&
1371                                        ssid->psk_set ? ssid->psk : NULL,
1372                                        ssid ? ssid->passphrase : NULL,
1373                                        go_dev_addr, persistent, "");
1374                 wpas_p2p_cross_connect_setup(wpa_s);
1375                 wpas_p2p_set_group_idle_timeout(wpa_s);
1376         }
1377
1378         if (persistent)
1379                 network_id = wpas_p2p_store_persistent_group(wpa_s->p2pdev,
1380                                                              ssid, go_dev_addr);
1381         else {
1382                 os_free(wpa_s->global->add_psk);
1383                 wpa_s->global->add_psk = NULL;
1384         }
1385         if (network_id < 0 && ssid)
1386                 network_id = ssid->id;
1387         if (!client) {
1388                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1389                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1390         }
1391 }
1392
1393
1394 struct send_action_work {
1395         unsigned int freq;
1396         u8 dst[ETH_ALEN];
1397         u8 src[ETH_ALEN];
1398         u8 bssid[ETH_ALEN];
1399         size_t len;
1400         unsigned int wait_time;
1401         u8 buf[0];
1402 };
1403
1404
1405 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s)
1406 {
1407         struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx;
1408
1409         wpa_printf(MSG_DEBUG,
1410                    "P2P: Free Action frame radio work @%p (freq=%u dst="
1411                    MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)",
1412                    wpa_s->p2p_send_action_work, awork->freq,
1413                    MAC2STR(awork->dst), MAC2STR(awork->src),
1414                    MAC2STR(awork->bssid), awork->wait_time);
1415         wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame",
1416                     awork->buf, awork->len);
1417         os_free(awork);
1418         wpa_s->p2p_send_action_work->ctx = NULL;
1419         radio_work_done(wpa_s->p2p_send_action_work);
1420         wpa_s->p2p_send_action_work = NULL;
1421 }
1422
1423
1424 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1425                                               void *timeout_ctx)
1426 {
1427         struct wpa_supplicant *wpa_s = eloop_ctx;
1428
1429         if (!wpa_s->p2p_send_action_work)
1430                 return;
1431
1432         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1433         wpas_p2p_free_send_action_work(wpa_s);
1434 }
1435
1436
1437 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1438 {
1439         if (wpa_s->p2p_send_action_work) {
1440                 struct send_action_work *awork;
1441
1442                 awork = wpa_s->p2p_send_action_work->ctx;
1443                 wpa_printf(MSG_DEBUG,
1444                            "P2P: Clear Action TX work @%p (wait_time=%u)",
1445                            wpa_s->p2p_send_action_work, awork->wait_time);
1446                 if (awork->wait_time == 0) {
1447                         wpas_p2p_free_send_action_work(wpa_s);
1448                 } else {
1449                         /*
1450                          * In theory, this should not be needed, but number of
1451                          * places in the P2P code is still using non-zero wait
1452                          * time for the last Action frame in the sequence and
1453                          * some of these do not call send_action_done().
1454                          */
1455                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1456                                              wpa_s, NULL);
1457                         eloop_register_timeout(
1458                                 0, awork->wait_time * 1000,
1459                                 wpas_p2p_send_action_work_timeout,
1460                                 wpa_s, NULL);
1461                 }
1462         }
1463 }
1464
1465
1466 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1467                                            unsigned int freq,
1468                                            const u8 *dst, const u8 *src,
1469                                            const u8 *bssid,
1470                                            const u8 *data, size_t data_len,
1471                                            enum offchannel_send_action_result
1472                                            result)
1473 {
1474         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1475
1476         wpas_p2p_action_tx_clear(wpa_s);
1477
1478         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1479                 return;
1480
1481         switch (result) {
1482         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1483                 res = P2P_SEND_ACTION_SUCCESS;
1484                 break;
1485         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1486                 res = P2P_SEND_ACTION_NO_ACK;
1487                 break;
1488         case OFFCHANNEL_SEND_ACTION_FAILED:
1489                 res = P2P_SEND_ACTION_FAILED;
1490                 break;
1491         }
1492
1493         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1494
1495         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1496             wpa_s->pending_pd_before_join &&
1497             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1498              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1499             wpa_s->p2p_fallback_to_go_neg) {
1500                 wpa_s->pending_pd_before_join = 0;
1501                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1502                         "during p2p_connect-auto");
1503                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1504                                P2P_EVENT_FALLBACK_TO_GO_NEG
1505                                "reason=no-ACK-to-PD-Req");
1506                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1507                 return;
1508         }
1509 }
1510
1511
1512 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1513 {
1514         struct wpa_supplicant *wpa_s = work->wpa_s;
1515         struct send_action_work *awork = work->ctx;
1516
1517         if (deinit) {
1518                 if (work->started) {
1519                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1520                                              wpa_s, NULL);
1521                         wpa_s->p2p_send_action_work = NULL;
1522                         offchannel_send_action_done(wpa_s);
1523                 }
1524                 os_free(awork);
1525                 return;
1526         }
1527
1528         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1529                                    awork->bssid, awork->buf, awork->len,
1530                                    awork->wait_time,
1531                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1532                 os_free(awork);
1533                 radio_work_done(work);
1534                 return;
1535         }
1536         wpa_s->p2p_send_action_work = work;
1537 }
1538
1539
1540 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1541                                  unsigned int freq, const u8 *dst,
1542                                  const u8 *src, const u8 *bssid, const u8 *buf,
1543                                  size_t len, unsigned int wait_time)
1544 {
1545         struct send_action_work *awork;
1546
1547         if (wpa_s->p2p_send_action_work) {
1548                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1549                 return -1;
1550         }
1551
1552         awork = os_zalloc(sizeof(*awork) + len);
1553         if (awork == NULL)
1554                 return -1;
1555
1556         awork->freq = freq;
1557         os_memcpy(awork->dst, dst, ETH_ALEN);
1558         os_memcpy(awork->src, src, ETH_ALEN);
1559         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1560         awork->len = len;
1561         awork->wait_time = wait_time;
1562         os_memcpy(awork->buf, buf, len);
1563
1564         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1565                            wpas_send_action_cb, awork) < 0) {
1566                 os_free(awork);
1567                 return -1;
1568         }
1569
1570         return 0;
1571 }
1572
1573
1574 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1575                             const u8 *src, const u8 *bssid, const u8 *buf,
1576                             size_t len, unsigned int wait_time)
1577 {
1578         struct wpa_supplicant *wpa_s = ctx;
1579         int listen_freq = -1, send_freq = -1;
1580
1581         if (wpa_s->p2p_listen_work)
1582                 listen_freq = wpa_s->p2p_listen_work->freq;
1583         if (wpa_s->p2p_send_action_work)
1584                 send_freq = wpa_s->p2p_send_action_work->freq;
1585         if (listen_freq != (int) freq && send_freq != (int) freq) {
1586                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1587                            listen_freq, send_freq);
1588                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1589                                              len, wait_time);
1590         }
1591
1592         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1593         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1594                                       wait_time,
1595                                       wpas_p2p_send_action_tx_status, 1);
1596 }
1597
1598
1599 static void wpas_send_action_done(void *ctx)
1600 {
1601         struct wpa_supplicant *wpa_s = ctx;
1602
1603         if (wpa_s->p2p_send_action_work) {
1604                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1605                                      wpa_s, NULL);
1606                 os_free(wpa_s->p2p_send_action_work->ctx);
1607                 radio_work_done(wpa_s->p2p_send_action_work);
1608                 wpa_s->p2p_send_action_work = NULL;
1609         }
1610
1611         offchannel_send_action_done(wpa_s);
1612 }
1613
1614
1615 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1616                                     struct p2p_go_neg_results *params)
1617 {
1618         if (wpa_s->go_params == NULL) {
1619                 wpa_s->go_params = os_malloc(sizeof(*params));
1620                 if (wpa_s->go_params == NULL)
1621                         return -1;
1622         }
1623         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1624         return 0;
1625 }
1626
1627
1628 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1629                                     struct p2p_go_neg_results *res)
1630 {
1631         wpa_s->group_formation_reported = 0;
1632         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1633                    " dev_addr " MACSTR " wps_method %d",
1634                    MAC2STR(res->peer_interface_addr),
1635                    MAC2STR(res->peer_device_addr), res->wps_method);
1636         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1637                           res->ssid, res->ssid_len);
1638         wpa_supplicant_ap_deinit(wpa_s);
1639         wpas_copy_go_neg_results(wpa_s, res);
1640         if (res->wps_method == WPS_PBC) {
1641                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1642 #ifdef CONFIG_WPS_NFC
1643         } else if (res->wps_method == WPS_NFC) {
1644                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1645                                    res->peer_interface_addr,
1646                                    wpa_s->p2pdev->p2p_oob_dev_pw,
1647                                    wpa_s->p2pdev->p2p_oob_dev_pw_id, 1,
1648                                    wpa_s->p2pdev->p2p_oob_dev_pw_id ==
1649                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1650                                    wpa_s->p2pdev->p2p_peer_oob_pubkey_hash :
1651                                    NULL,
1652                                    NULL, 0, 0);
1653 #endif /* CONFIG_WPS_NFC */
1654         } else {
1655                 u16 dev_pw_id = DEV_PW_DEFAULT;
1656                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1657                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1658                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1659                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1660                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1661                                    wpa_s->p2p_pin, 1, dev_pw_id);
1662         }
1663 }
1664
1665
1666 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1667                                   struct wpa_ssid *ssid)
1668 {
1669         struct wpa_ssid *persistent;
1670         struct psk_list_entry *psk;
1671         struct hostapd_data *hapd;
1672
1673         if (!wpa_s->ap_iface)
1674                 return;
1675
1676         persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
1677                                              ssid->ssid_len);
1678         if (persistent == NULL)
1679                 return;
1680
1681         hapd = wpa_s->ap_iface->bss[0];
1682
1683         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1684                          list) {
1685                 struct hostapd_wpa_psk *hpsk;
1686
1687                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1688                         MACSTR " psk=%d",
1689                         MAC2STR(psk->addr), psk->p2p);
1690                 hpsk = os_zalloc(sizeof(*hpsk));
1691                 if (hpsk == NULL)
1692                         break;
1693                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1694                 if (psk->p2p)
1695                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1696                 else
1697                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1698                 hpsk->next = hapd->conf->ssid.wpa_psk;
1699                 hapd->conf->ssid.wpa_psk = hpsk;
1700         }
1701 }
1702
1703
1704 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1705 {
1706         unsigned int i;
1707
1708         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1709                 wpa_s->p2p_group_common_freqs_num);
1710
1711         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1712                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1713                         i, wpa_s->p2p_group_common_freqs[i]);
1714 }
1715
1716
1717 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1718                                            struct p2p_go_neg_results *params)
1719 {
1720         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1721
1722         wpa_s->p2p_group_common_freqs_num = 0;
1723         os_free(wpa_s->p2p_group_common_freqs);
1724         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1725         if (!wpa_s->p2p_group_common_freqs)
1726                 return;
1727
1728         for (i = 0; i < len; i++) {
1729                 if (!wpa_s->go_params->freq_list[i])
1730                         break;
1731                 wpa_s->p2p_group_common_freqs[i] =
1732                         wpa_s->go_params->freq_list[i];
1733         }
1734         wpa_s->p2p_group_common_freqs_num = i;
1735 }
1736
1737
1738 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1739 {
1740 #ifndef CONFIG_NO_CONFIG_WRITE
1741         if (wpa_s->p2pdev->conf->update_config &&
1742             wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
1743                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1744 #endif /* CONFIG_NO_CONFIG_WRITE */
1745 }
1746
1747
1748 static void p2p_go_configured(void *ctx, void *data)
1749 {
1750         struct wpa_supplicant *wpa_s = ctx;
1751         struct p2p_go_neg_results *params = data;
1752         struct wpa_ssid *ssid;
1753         int network_id = -1;
1754
1755         wpa_s->ap_configured_cb = NULL;
1756         wpa_s->ap_configured_cb_ctx = NULL;
1757         wpa_s->ap_configured_cb_data = NULL;
1758         if (!wpa_s->go_params) {
1759                 wpa_printf(MSG_ERROR,
1760                            "P2P: p2p_go_configured() called with wpa_s->go_params == NULL");
1761                 return;
1762         }
1763
1764         p2p_go_save_group_common_freqs(wpa_s, params);
1765         p2p_go_dump_common_freqs(wpa_s);
1766
1767         ssid = wpa_s->current_ssid;
1768         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1769                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1770                 if (wpa_s->global->p2p_group_formation == wpa_s)
1771                         wpa_s->global->p2p_group_formation = NULL;
1772                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1773                                        params->passphrase[0] == '\0' ?
1774                                        params->psk : NULL,
1775                                        params->passphrase,
1776                                        wpa_s->global->p2p_dev_addr,
1777                                        params->persistent_group, "");
1778                 wpa_s->group_formation_reported = 1;
1779
1780                 if (wpa_s->p2pdev->p2ps_method_config_any) {
1781                         if (is_zero_ether_addr(wpa_s->p2pdev->p2ps_join_addr)) {
1782                                 wpa_dbg(wpa_s, MSG_DEBUG,
1783                                         "P2PS: Setting default PIN for ANY");
1784                                 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1785                                                           "12345670", NULL, 0,
1786                                                           0);
1787                         } else {
1788                                 wpa_dbg(wpa_s, MSG_DEBUG,
1789                                         "P2PS: Setting default PIN for " MACSTR,
1790                                         MAC2STR(wpa_s->p2pdev->p2ps_join_addr));
1791                                 wpa_supplicant_ap_wps_pin(
1792                                         wpa_s, wpa_s->p2pdev->p2ps_join_addr,
1793                                         "12345670", NULL, 0, 0);
1794                         }
1795                         wpa_s->p2pdev->p2ps_method_config_any = 0;
1796                 }
1797
1798                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1799                 if (params->persistent_group) {
1800                         network_id = wpas_p2p_store_persistent_group(
1801                                 wpa_s->p2pdev, ssid,
1802                                 wpa_s->global->p2p_dev_addr);
1803                         wpas_p2p_add_psk_list(wpa_s, ssid);
1804                 }
1805                 if (network_id < 0)
1806                         network_id = ssid->id;
1807                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1808                 wpas_p2p_cross_connect_setup(wpa_s);
1809                 wpas_p2p_set_group_idle_timeout(wpa_s);
1810
1811                 if (wpa_s->p2p_first_connection_timeout) {
1812                         wpa_dbg(wpa_s, MSG_DEBUG,
1813                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1814                                 wpa_s->p2p_first_connection_timeout);
1815                         wpa_s->p2p_go_group_formation_completed = 0;
1816                         wpa_s->global->p2p_group_formation = wpa_s;
1817                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1818                                              wpa_s->p2pdev, NULL);
1819                         eloop_register_timeout(
1820                                 wpa_s->p2p_first_connection_timeout, 0,
1821                                 wpas_p2p_group_formation_timeout,
1822                                 wpa_s->p2pdev, NULL);
1823                 }
1824
1825                 return;
1826         }
1827
1828         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1829         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1830                                               params->peer_interface_addr)) {
1831                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1832                            "filtering");
1833                 return;
1834         }
1835         if (params->wps_method == WPS_PBC) {
1836                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1837                                           params->peer_device_addr);
1838 #ifdef CONFIG_WPS_NFC
1839         } else if (params->wps_method == WPS_NFC) {
1840                 if (wpa_s->p2pdev->p2p_oob_dev_pw_id !=
1841                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1842                     !wpa_s->p2pdev->p2p_oob_dev_pw) {
1843                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1844                         return;
1845                 }
1846                 wpas_ap_wps_add_nfc_pw(
1847                         wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id,
1848                         wpa_s->p2pdev->p2p_oob_dev_pw,
1849                         wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ?
1850                         wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL);
1851 #endif /* CONFIG_WPS_NFC */
1852         } else if (wpa_s->p2p_pin[0])
1853                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1854                                           wpa_s->p2p_pin, NULL, 0, 0);
1855         os_free(wpa_s->go_params);
1856         wpa_s->go_params = NULL;
1857 }
1858
1859
1860 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1861                               struct p2p_go_neg_results *params,
1862                               int group_formation)
1863 {
1864         struct wpa_ssid *ssid;
1865
1866         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1867         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1868                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1869                         "results");
1870                 return;
1871         }
1872
1873         ssid = wpa_config_add_network(wpa_s->conf);
1874         if (ssid == NULL) {
1875                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1876                 return;
1877         }
1878
1879         wpa_s->show_group_started = 0;
1880         wpa_s->p2p_go_group_formation_completed = 0;
1881         wpa_s->group_formation_reported = 0;
1882         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1883
1884         wpa_config_set_network_defaults(ssid);
1885         ssid->temporary = 1;
1886         ssid->p2p_group = 1;
1887         ssid->p2p_persistent_group = params->persistent_group;
1888         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1889                 WPAS_MODE_P2P_GO;
1890         ssid->frequency = params->freq;
1891         ssid->ht40 = params->ht40;
1892         ssid->vht = params->vht;
1893         ssid->max_oper_chwidth = params->max_oper_chwidth;
1894         ssid->vht_center_freq2 = params->vht_center_freq2;
1895         ssid->ssid = os_zalloc(params->ssid_len + 1);
1896         if (ssid->ssid) {
1897                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1898                 ssid->ssid_len = params->ssid_len;
1899         }
1900         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1901         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1902         ssid->proto = WPA_PROTO_RSN;
1903         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1904         ssid->group_cipher = WPA_CIPHER_CCMP;
1905         if (params->freq > 56160) {
1906                 /*
1907                  * Enable GCMP instead of CCMP as pairwise_cipher and
1908                  * group_cipher in 60 GHz.
1909                  */
1910                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1911                 ssid->group_cipher = WPA_CIPHER_GCMP;
1912                 /* P2P GO in 60 GHz is always a PCP (PBSS) */
1913                 ssid->pbss = 1;
1914         }
1915         if (os_strlen(params->passphrase) > 0) {
1916                 ssid->passphrase = os_strdup(params->passphrase);
1917                 if (ssid->passphrase == NULL) {
1918                         wpa_msg_global(wpa_s, MSG_ERROR,
1919                                        "P2P: Failed to copy passphrase for GO");
1920                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1921                         return;
1922                 }
1923         } else
1924                 ssid->passphrase = NULL;
1925         ssid->psk_set = params->psk_set;
1926         if (ssid->psk_set)
1927                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1928         else if (ssid->passphrase)
1929                 wpa_config_update_psk(ssid);
1930         ssid->ap_max_inactivity = wpa_s->p2pdev->conf->p2p_go_max_inactivity;
1931
1932         wpa_s->ap_configured_cb = p2p_go_configured;
1933         wpa_s->ap_configured_cb_ctx = wpa_s;
1934         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1935         wpa_s->scan_req = NORMAL_SCAN_REQ;
1936         wpa_s->connect_without_scan = ssid;
1937         wpa_s->reassociate = 1;
1938         wpa_s->disconnected = 0;
1939         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1940                 "start GO)");
1941         wpa_supplicant_req_scan(wpa_s, 0, 0);
1942 }
1943
1944
1945 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1946                                   const struct wpa_supplicant *src)
1947 {
1948         struct wpa_config *d;
1949         const struct wpa_config *s;
1950
1951         d = dst->conf;
1952         s = src->conf;
1953
1954 #define C(n) if (s->n) d->n = os_strdup(s->n)
1955         C(device_name);
1956         C(manufacturer);
1957         C(model_name);
1958         C(model_number);
1959         C(serial_number);
1960         C(config_methods);
1961 #undef C
1962
1963         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1964         os_memcpy(d->sec_device_type, s->sec_device_type,
1965                   sizeof(d->sec_device_type));
1966         d->num_sec_device_types = s->num_sec_device_types;
1967
1968         d->p2p_group_idle = s->p2p_group_idle;
1969         d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
1970         d->p2p_intra_bss = s->p2p_intra_bss;
1971         d->persistent_reconnect = s->persistent_reconnect;
1972         d->max_num_sta = s->max_num_sta;
1973         d->pbc_in_m1 = s->pbc_in_m1;
1974         d->ignore_old_scan_res = s->ignore_old_scan_res;
1975         d->beacon_int = s->beacon_int;
1976         d->dtim_period = s->dtim_period;
1977         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1978         d->disassoc_low_ack = s->disassoc_low_ack;
1979         d->disable_scan_offload = s->disable_scan_offload;
1980         d->passive_scan = s->passive_scan;
1981
1982         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1983                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1984                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1985         }
1986         d->p2p_cli_probe = s->p2p_cli_probe;
1987 }
1988
1989
1990 static void wpas_p2p_clone_config_dh(struct wpa_supplicant *dst,
1991                                      const struct wpa_supplicant *src)
1992 {
1993         struct wpa_config *d;
1994         const struct wpa_config *s;
1995
1996         d = dst->conf;
1997         s = src->conf;
1998
1999         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey &&
2000             !d->wps_nfc_dh_privkey && !d->wps_nfc_dh_pubkey) {
2001                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
2002                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
2003         }
2004 }
2005
2006
2007 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
2008                                       char *ifname, size_t len)
2009 {
2010         char *ifname_ptr = wpa_s->ifname;
2011
2012         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
2013                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
2014                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
2015         }
2016
2017         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
2018         if (os_strlen(ifname) >= IFNAMSIZ &&
2019             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
2020                 int res;
2021
2022                 /* Try to avoid going over the IFNAMSIZ length limit */
2023                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
2024                 if (os_snprintf_error(len, res) && len)
2025                         ifname[len - 1] = '\0';
2026         }
2027 }
2028
2029
2030 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
2031                                         enum wpa_driver_if_type type)
2032 {
2033         char ifname[120], force_ifname[120];
2034
2035         if (wpa_s->pending_interface_name[0]) {
2036                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
2037                            "- skip creation of a new one");
2038                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
2039                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
2040                                    "unknown?! ifname='%s'",
2041                                    wpa_s->pending_interface_name);
2042                         return -1;
2043                 }
2044                 return 0;
2045         }
2046
2047         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
2048         force_ifname[0] = '\0';
2049
2050         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
2051                    ifname);
2052         wpa_s->p2p_group_idx++;
2053
2054         wpa_s->pending_interface_type = type;
2055         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
2056                            wpa_s->pending_interface_addr, NULL) < 0) {
2057                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
2058                            "interface");
2059                 return -1;
2060         }
2061
2062         if (force_ifname[0]) {
2063                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2064                            force_ifname);
2065                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2066                            sizeof(wpa_s->pending_interface_name));
2067         } else
2068                 os_strlcpy(wpa_s->pending_interface_name, ifname,
2069                            sizeof(wpa_s->pending_interface_name));
2070         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2071                    MACSTR, wpa_s->pending_interface_name,
2072                    MAC2STR(wpa_s->pending_interface_addr));
2073
2074         return 0;
2075 }
2076
2077
2078 static void wpas_p2p_remove_pending_group_interface(
2079         struct wpa_supplicant *wpa_s)
2080 {
2081         if (!wpa_s->pending_interface_name[0] ||
2082             is_zero_ether_addr(wpa_s->pending_interface_addr))
2083                 return; /* No pending virtual interface */
2084
2085         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2086                    wpa_s->pending_interface_name);
2087         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2088                           wpa_s->pending_interface_name);
2089         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2090         wpa_s->pending_interface_name[0] = '\0';
2091         wpa_s->global->pending_group_iface_for_p2ps = 0;
2092 }
2093
2094
2095 static struct wpa_supplicant *
2096 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2097 {
2098         struct wpa_interface iface;
2099         struct wpa_supplicant *group_wpa_s;
2100
2101         if (!wpa_s->pending_interface_name[0]) {
2102                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2103                 if (!wpas_p2p_create_iface(wpa_s))
2104                         return NULL;
2105                 /*
2106                  * Something has forced us to remove the pending interface; try
2107                  * to create a new one and hope for the best that we will get
2108                  * the same local address.
2109                  */
2110                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2111                                                  WPA_IF_P2P_CLIENT) < 0)
2112                         return NULL;
2113         }
2114
2115         os_memset(&iface, 0, sizeof(iface));
2116         iface.ifname = wpa_s->pending_interface_name;
2117         iface.driver = wpa_s->driver->name;
2118         if (wpa_s->conf->ctrl_interface == NULL &&
2119             wpa_s->parent != wpa_s &&
2120             wpa_s->p2p_mgmt &&
2121             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2122                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2123         else
2124                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2125         iface.driver_param = wpa_s->conf->driver_param;
2126         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2127         if (group_wpa_s == NULL) {
2128                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2129                            "wpa_supplicant interface");
2130                 return NULL;
2131         }
2132         wpa_s->pending_interface_name[0] = '\0';
2133         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2134                 P2P_GROUP_INTERFACE_CLIENT;
2135         wpa_s->global->p2p_group_formation = group_wpa_s;
2136         wpa_s->global->pending_group_iface_for_p2ps = 0;
2137
2138         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2139
2140         return group_wpa_s;
2141 }
2142
2143
2144 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2145                                              void *timeout_ctx)
2146 {
2147         struct wpa_supplicant *wpa_s = eloop_ctx;
2148         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2149         wpas_p2p_group_formation_failed(wpa_s, 0);
2150 }
2151
2152
2153 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2154                                             int already_deleted)
2155 {
2156         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2157                              wpa_s->p2pdev, NULL);
2158         if (wpa_s->global->p2p)
2159                 p2p_group_formation_failed(wpa_s->global->p2p);
2160         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2161 }
2162
2163
2164 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2165 {
2166         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2167         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2168                              wpa_s->p2pdev, NULL);
2169         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2170                                wpa_s->p2pdev, NULL);
2171         wpa_s->global->p2p_fail_on_wps_complete = 0;
2172 }
2173
2174
2175 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2176 {
2177         if (wpa_s->global->p2p_group_formation != wpa_s)
2178                 return;
2179         /* Speed up group formation timeout since this cannot succeed */
2180         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2181                              wpa_s->p2pdev, NULL);
2182         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2183                                wpa_s->p2pdev, NULL);
2184 }
2185
2186
2187 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2188 {
2189         struct wpa_supplicant *wpa_s = ctx;
2190         struct wpa_supplicant *group_wpa_s;
2191
2192         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2193                 wpa_drv_cancel_remain_on_channel(wpa_s);
2194                 wpa_s->off_channel_freq = 0;
2195                 wpa_s->roc_waiting_drv_freq = 0;
2196         }
2197
2198         if (res->status) {
2199                 wpa_msg_global(wpa_s, MSG_INFO,
2200                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2201                                res->status);
2202                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2203                 wpas_p2p_remove_pending_group_interface(wpa_s);
2204                 return;
2205         }
2206
2207         if (!res->role_go) {
2208                 /* Inform driver of the operating channel of GO. */
2209                 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2210         }
2211
2212         if (wpa_s->p2p_go_ht40)
2213                 res->ht40 = 1;
2214         if (wpa_s->p2p_go_vht)
2215                 res->vht = 1;
2216         res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth;
2217         res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2;
2218
2219         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2220                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2221                        " wps_method=%s",
2222                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2223                        MAC2STR(res->peer_device_addr),
2224                        MAC2STR(res->peer_interface_addr),
2225                        p2p_wps_method_text(res->wps_method));
2226         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2227
2228         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2229                 struct wpa_ssid *ssid;
2230                 ssid = wpa_config_get_network(wpa_s->conf,
2231                                               wpa_s->p2p_persistent_id);
2232                 if (ssid && ssid->disabled == 2 &&
2233                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2234                         size_t len = os_strlen(ssid->passphrase);
2235                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2236                                    "on requested persistent group");
2237                         os_memcpy(res->passphrase, ssid->passphrase, len);
2238                         res->passphrase[len] = '\0';
2239                 }
2240         }
2241
2242         if (wpa_s->create_p2p_iface) {
2243                 group_wpa_s =
2244                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2245                 if (group_wpa_s == NULL) {
2246                         wpas_p2p_remove_pending_group_interface(wpa_s);
2247                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2248                                              wpa_s, NULL);
2249                         wpas_p2p_group_formation_failed(wpa_s, 1);
2250                         return;
2251                 }
2252                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2253                 wpa_s->pending_interface_name[0] = '\0';
2254         } else {
2255                 group_wpa_s = wpa_s->parent;
2256                 wpa_s->global->p2p_group_formation = group_wpa_s;
2257                 if (group_wpa_s != wpa_s)
2258                         wpas_p2p_clone_config_dh(group_wpa_s, wpa_s);
2259         }
2260
2261         group_wpa_s->p2p_in_provisioning = 1;
2262         group_wpa_s->p2pdev = wpa_s;
2263         if (group_wpa_s != wpa_s) {
2264                 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2265                           sizeof(group_wpa_s->p2p_pin));
2266                 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2267         }
2268         if (res->role_go) {
2269                 wpas_start_wps_go(group_wpa_s, res, 1);
2270         } else {
2271                 os_get_reltime(&group_wpa_s->scan_min_time);
2272                 wpas_start_wps_enrollee(group_wpa_s, res);
2273         }
2274
2275         wpa_s->p2p_long_listen = 0;
2276         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2277
2278         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2279         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2280                                (res->peer_config_timeout % 100) * 10000,
2281                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2282 }
2283
2284
2285 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2286                                u8 go_intent)
2287 {
2288         struct wpa_supplicant *wpa_s = ctx;
2289         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2290                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2291                        dev_passwd_id, go_intent);
2292
2293         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2294 }
2295
2296
2297 static void wpas_dev_found(void *ctx, const u8 *addr,
2298                            const struct p2p_peer_info *info,
2299                            int new_device)
2300 {
2301 #ifndef CONFIG_NO_STDOUT_DEBUG
2302         struct wpa_supplicant *wpa_s = ctx;
2303         char devtype[WPS_DEV_TYPE_BUFSIZE];
2304         char *wfd_dev_info_hex = NULL;
2305
2306 #ifdef CONFIG_WIFI_DISPLAY
2307         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2308                                                     WFD_SUBELEM_DEVICE_INFO);
2309 #endif /* CONFIG_WIFI_DISPLAY */
2310
2311         if (info->p2ps_instance) {
2312                 char str[256];
2313                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2314                 size_t len = wpabuf_len(info->p2ps_instance);
2315
2316                 while (len) {
2317                         u32 id;
2318                         u16 methods;
2319                         u8 str_len;
2320
2321                         if (len < 4 + 2 + 1)
2322                                 break;
2323                         id = WPA_GET_LE32(buf);
2324                         buf += sizeof(u32);
2325                         methods = WPA_GET_BE16(buf);
2326                         buf += sizeof(u16);
2327                         str_len = *buf++;
2328                         if (str_len > len - 4 - 2 - 1)
2329                                 break;
2330                         os_memcpy(str, buf, str_len);
2331                         str[str_len] = '\0';
2332                         buf += str_len;
2333                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2334
2335                         wpa_msg_global(wpa_s, MSG_INFO,
2336                                        P2P_EVENT_DEVICE_FOUND MACSTR
2337                                        " p2p_dev_addr=" MACSTR
2338                                        " pri_dev_type=%s name='%s'"
2339                                        " config_methods=0x%x"
2340                                        " dev_capab=0x%x"
2341                                        " group_capab=0x%x"
2342                                        " adv_id=%x asp_svc=%s%s",
2343                                        MAC2STR(addr),
2344                                        MAC2STR(info->p2p_device_addr),
2345                                        wps_dev_type_bin2str(
2346                                                info->pri_dev_type,
2347                                                devtype, sizeof(devtype)),
2348                                        info->device_name, methods,
2349                                        info->dev_capab, info->group_capab,
2350                                        id, str,
2351                                        info->vendor_elems ?
2352                                        " vendor_elems=1" : "");
2353                 }
2354                 goto done;
2355         }
2356
2357         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2358                        " p2p_dev_addr=" MACSTR
2359                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2360                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2361                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2362                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2363                                             sizeof(devtype)),
2364                        info->device_name, info->config_methods,
2365                        info->dev_capab, info->group_capab,
2366                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2367                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2368                        info->vendor_elems ? " vendor_elems=1" : "",
2369                        new_device);
2370
2371 done:
2372         os_free(wfd_dev_info_hex);
2373 #endif /* CONFIG_NO_STDOUT_DEBUG */
2374
2375         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2376 }
2377
2378
2379 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2380 {
2381         struct wpa_supplicant *wpa_s = ctx;
2382
2383         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2384                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2385
2386         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2387 }
2388
2389
2390 static void wpas_find_stopped(void *ctx)
2391 {
2392         struct wpa_supplicant *wpa_s = ctx;
2393
2394         if (wpa_s->p2p_scan_work && wpas_abort_ongoing_scan(wpa_s) < 0)
2395                 wpa_printf(MSG_DEBUG, "P2P: Abort ongoing scan failed");
2396
2397         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2398         wpas_notify_p2p_find_stopped(wpa_s);
2399 }
2400
2401
2402 struct wpas_p2p_listen_work {
2403         unsigned int freq;
2404         unsigned int duration;
2405         struct wpabuf *probe_resp_ie;
2406 };
2407
2408
2409 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2410 {
2411         if (lwork == NULL)
2412                 return;
2413         wpabuf_free(lwork->probe_resp_ie);
2414         os_free(lwork);
2415 }
2416
2417
2418 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2419 {
2420         struct wpas_p2p_listen_work *lwork;
2421
2422         if (!wpa_s->p2p_listen_work)
2423                 return;
2424
2425         lwork = wpa_s->p2p_listen_work->ctx;
2426         wpas_p2p_listen_work_free(lwork);
2427         radio_work_done(wpa_s->p2p_listen_work);
2428         wpa_s->p2p_listen_work = NULL;
2429 }
2430
2431
2432 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2433 {
2434         struct wpa_supplicant *wpa_s = work->wpa_s;
2435         struct wpas_p2p_listen_work *lwork = work->ctx;
2436         unsigned int duration;
2437
2438         if (deinit) {
2439                 if (work->started) {
2440                         wpa_s->p2p_listen_work = NULL;
2441                         wpas_stop_listen(wpa_s);
2442                 }
2443                 wpas_p2p_listen_work_free(lwork);
2444                 return;
2445         }
2446
2447         wpa_s->p2p_listen_work = work;
2448
2449         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2450
2451         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2452                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2453                            "report received Probe Request frames");
2454                 wpas_p2p_listen_work_done(wpa_s);
2455                 return;
2456         }
2457
2458         wpa_s->pending_listen_freq = lwork->freq;
2459         wpa_s->pending_listen_duration = lwork->duration;
2460
2461         duration = lwork->duration;
2462 #ifdef CONFIG_TESTING_OPTIONS
2463         if (wpa_s->extra_roc_dur) {
2464                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2465                            duration, duration + wpa_s->extra_roc_dur);
2466                 duration += wpa_s->extra_roc_dur;
2467         }
2468 #endif /* CONFIG_TESTING_OPTIONS */
2469
2470         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2471                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2472                            "to remain on channel (%u MHz) for Listen "
2473                            "state", lwork->freq);
2474                 wpas_p2p_listen_work_done(wpa_s);
2475                 wpa_s->pending_listen_freq = 0;
2476                 return;
2477         }
2478         wpa_s->off_channel_freq = 0;
2479         wpa_s->roc_waiting_drv_freq = lwork->freq;
2480 }
2481
2482
2483 static int wpas_start_listen(void *ctx, unsigned int freq,
2484                              unsigned int duration,
2485                              const struct wpabuf *probe_resp_ie)
2486 {
2487         struct wpa_supplicant *wpa_s = ctx;
2488         struct wpas_p2p_listen_work *lwork;
2489
2490         if (wpa_s->p2p_listen_work) {
2491                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2492                 return -1;
2493         }
2494
2495         lwork = os_zalloc(sizeof(*lwork));
2496         if (lwork == NULL)
2497                 return -1;
2498         lwork->freq = freq;
2499         lwork->duration = duration;
2500         if (probe_resp_ie) {
2501                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2502                 if (lwork->probe_resp_ie == NULL) {
2503                         wpas_p2p_listen_work_free(lwork);
2504                         return -1;
2505                 }
2506         }
2507
2508         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2509                            lwork) < 0) {
2510                 wpas_p2p_listen_work_free(lwork);
2511                 return -1;
2512         }
2513
2514         return 0;
2515 }
2516
2517
2518 static void wpas_stop_listen(void *ctx)
2519 {
2520         struct wpa_supplicant *wpa_s = ctx;
2521         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2522                 wpa_drv_cancel_remain_on_channel(wpa_s);
2523                 wpa_s->off_channel_freq = 0;
2524                 wpa_s->roc_waiting_drv_freq = 0;
2525         }
2526         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2527
2528         /*
2529          * Don't cancel Probe Request RX reporting for a connected P2P Client
2530          * handling Probe Request frames.
2531          */
2532         if (!wpa_s->p2p_cli_probe)
2533                 wpa_drv_probe_req_report(wpa_s, 0);
2534
2535         wpas_p2p_listen_work_done(wpa_s);
2536 }
2537
2538
2539 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2540                                 unsigned int freq)
2541 {
2542         struct wpa_supplicant *wpa_s = ctx;
2543         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2544                                  freq);
2545 }
2546
2547
2548 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2549                                          const u8 *peer, const char *params,
2550                                          unsigned int generated_pin)
2551 {
2552         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2553                        " %08d%s", MAC2STR(peer), generated_pin, params);
2554 }
2555
2556
2557 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2558                                         const u8 *peer, const char *params)
2559 {
2560         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2561                        "%s", MAC2STR(peer), params);
2562 }
2563
2564
2565 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2566                                const u8 *dev_addr, const u8 *pri_dev_type,
2567                                const char *dev_name, u16 supp_config_methods,
2568                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2569                                size_t group_id_len)
2570 {
2571         struct wpa_supplicant *wpa_s = ctx;
2572         char devtype[WPS_DEV_TYPE_BUFSIZE];
2573         char params[300];
2574         u8 empty_dev_type[8];
2575         unsigned int generated_pin = 0;
2576         struct wpa_supplicant *group = NULL;
2577         int res;
2578
2579         if (group_id) {
2580                 for (group = wpa_s->global->ifaces; group; group = group->next)
2581                 {
2582                         struct wpa_ssid *s = group->current_ssid;
2583                         if (s != NULL &&
2584                             s->mode == WPAS_MODE_P2P_GO &&
2585                             group_id_len - ETH_ALEN == s->ssid_len &&
2586                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2587                                       s->ssid_len) == 0)
2588                                 break;
2589                 }
2590         }
2591
2592         if (pri_dev_type == NULL) {
2593                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2594                 pri_dev_type = empty_dev_type;
2595         }
2596         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2597                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2598                           "dev_capab=0x%x group_capab=0x%x%s%s",
2599                           MAC2STR(dev_addr),
2600                           wps_dev_type_bin2str(pri_dev_type, devtype,
2601                                                sizeof(devtype)),
2602                           dev_name, supp_config_methods, dev_capab, group_capab,
2603                           group ? " group=" : "",
2604                           group ? group->ifname : "");
2605         if (os_snprintf_error(sizeof(params), res))
2606                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2607         params[sizeof(params) - 1] = '\0';
2608
2609         if (config_methods & WPS_CONFIG_DISPLAY) {
2610                 if (wps_generate_pin(&generated_pin) < 0) {
2611                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2612                         wpas_notify_p2p_provision_discovery(
2613                                 wpa_s, peer, 0 /* response */,
2614                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2615                         return;
2616                 }
2617                 wpas_prov_disc_local_display(wpa_s, peer, params,
2618                                              generated_pin);
2619         } else if (config_methods & WPS_CONFIG_KEYPAD)
2620                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2621         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2622                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2623                                MACSTR "%s", MAC2STR(peer), params);
2624
2625         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2626                                             P2P_PROV_DISC_SUCCESS,
2627                                             config_methods, generated_pin);
2628 }
2629
2630
2631 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2632 {
2633         struct wpa_supplicant *wpa_s = ctx;
2634         unsigned int generated_pin = 0;
2635         char params[20];
2636
2637         if (wpa_s->pending_pd_before_join &&
2638             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2639              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2640                 wpa_s->pending_pd_before_join = 0;
2641                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2642                            "join-existing-group operation");
2643                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2644                 return;
2645         }
2646
2647         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2648             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2649                 int res;
2650
2651                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2652                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2653                 if (os_snprintf_error(sizeof(params), res))
2654                         params[sizeof(params) - 1] = '\0';
2655         } else
2656                 params[0] = '\0';
2657
2658         if (config_methods & WPS_CONFIG_DISPLAY)
2659                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2660         else if (config_methods & WPS_CONFIG_KEYPAD) {
2661                 if (wps_generate_pin(&generated_pin) < 0) {
2662                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2663                         wpas_notify_p2p_provision_discovery(
2664                                 wpa_s, peer, 0 /* response */,
2665                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2666                         return;
2667                 }
2668                 wpas_prov_disc_local_display(wpa_s, peer, params,
2669                                              generated_pin);
2670         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2671                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2672                                MACSTR "%s", MAC2STR(peer), params);
2673
2674         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2675                                             P2P_PROV_DISC_SUCCESS,
2676                                             config_methods, generated_pin);
2677 }
2678
2679
2680 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2681                                 enum p2p_prov_disc_status status,
2682                                 u32 adv_id, const u8 *adv_mac,
2683                                 const char *deferred_session_resp)
2684 {
2685         struct wpa_supplicant *wpa_s = ctx;
2686
2687         if (wpa_s->p2p_fallback_to_go_neg) {
2688                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2689                         "failed - fall back to GO Negotiation");
2690                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
2691                                P2P_EVENT_FALLBACK_TO_GO_NEG
2692                                "reason=PD-failed");
2693                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2694                 return;
2695         }
2696
2697         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2698                 wpa_s->pending_pd_before_join = 0;
2699                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2700                            "join-existing-group operation (no ACK for PD "
2701                            "Req attempts)");
2702                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2703                 return;
2704         }
2705
2706         if (adv_id && adv_mac && deferred_session_resp) {
2707                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2708                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2709                                " deferred_session_resp='%s'",
2710                                MAC2STR(peer), status, adv_id,
2711                                deferred_session_resp);
2712         } else if (adv_id && adv_mac) {
2713                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2714                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2715                                MAC2STR(peer), status, adv_id);
2716         } else {
2717                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2718                                " p2p_dev_addr=" MACSTR " status=%d",
2719                                MAC2STR(peer), status);
2720         }
2721
2722         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2723                                             status, 0, 0);
2724 }
2725
2726
2727 static int freq_included(struct wpa_supplicant *wpa_s,
2728                          const struct p2p_channels *channels,
2729                          unsigned int freq)
2730 {
2731         if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2732             wpas_p2p_go_is_peer_freq(wpa_s, freq))
2733                 return 1;
2734         return 0;
2735 }
2736
2737
2738 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2739 {
2740         unsigned int num = P2P_MAX_CHANNELS;
2741         int *common_freqs;
2742         int ret;
2743
2744         p2p_go_dump_common_freqs(wpa_s);
2745         common_freqs = os_calloc(num, sizeof(int));
2746         if (!common_freqs)
2747                 return;
2748
2749         ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2750         if (ret < 0) {
2751                 wpa_dbg(wpa_s, MSG_DEBUG,
2752                         "P2P: Failed to get group common freqs");
2753                 os_free(common_freqs);
2754                 return;
2755         }
2756
2757         os_free(wpa_s->p2p_group_common_freqs);
2758         wpa_s->p2p_group_common_freqs = common_freqs;
2759         wpa_s->p2p_group_common_freqs_num = num;
2760         p2p_go_dump_common_freqs(wpa_s);
2761 }
2762
2763
2764 /*
2765  * Check if the given frequency is one of the possible operating frequencies
2766  * set after the completion of the GO Negotiation.
2767  */
2768 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2769 {
2770         unsigned int i;
2771
2772         p2p_go_dump_common_freqs(wpa_s);
2773
2774         /* assume no restrictions */
2775         if (!wpa_s->p2p_group_common_freqs_num)
2776                 return 1;
2777
2778         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2779                 if (wpa_s->p2p_group_common_freqs[i] == freq)
2780                         return 1;
2781         }
2782         return 0;
2783 }
2784
2785
2786 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2787                                struct sta_info *sta, void *ctx)
2788 {
2789         int *ecsa_support = ctx;
2790
2791         *ecsa_support &= sta->ecsa_supported;
2792
2793         return 0;
2794 }
2795
2796
2797 /* Check if all the peers support eCSA */
2798 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2799 {
2800         int ecsa_support = 1;
2801
2802         ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2803                         &ecsa_support);
2804
2805         return ecsa_support;
2806 }
2807
2808
2809 /**
2810  * Pick the best frequency to use from all the currently used frequencies.
2811  */
2812 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2813                                         struct wpa_used_freq_data *freqs,
2814                                         unsigned int num)
2815 {
2816         unsigned int i, c;
2817
2818         /* find a candidate freq that is supported by P2P */
2819         for (c = 0; c < num; c++)
2820                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2821                         break;
2822
2823         if (c == num)
2824                 return 0;
2825
2826         /* once we have a candidate, try to find a 'better' one */
2827         for (i = c + 1; i < num; i++) {
2828                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2829                         continue;
2830
2831                 /*
2832                  * 1. Infrastructure station interfaces have higher preference.
2833                  * 2. P2P Clients have higher preference.
2834                  * 3. All others.
2835                  */
2836                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2837                         c = i;
2838                         break;
2839                 }
2840
2841                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2842                         c = i;
2843         }
2844         return freqs[c].freq;
2845 }
2846
2847
2848 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2849                                   const u8 *go_dev_addr, const u8 *ssid,
2850                                   size_t ssid_len, int *go, u8 *group_bssid,
2851                                   int *force_freq, int persistent_group,
2852                                   const struct p2p_channels *channels,
2853                                   int dev_pw_id)
2854 {
2855         struct wpa_supplicant *wpa_s = ctx;
2856         struct wpa_ssid *s;
2857         struct wpa_used_freq_data *freqs;
2858         struct wpa_supplicant *grp;
2859         int best_freq;
2860
2861         if (!persistent_group) {
2862                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2863                            " to join an active group (SSID: %s)",
2864                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2865                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2866                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2867                      == 0 ||
2868                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2869                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2870                                    "authorized invitation");
2871                         goto accept_inv;
2872                 }
2873
2874 #ifdef CONFIG_WPS_NFC
2875                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2876                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2877                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2878                         wpa_s->p2p_wps_method = WPS_NFC;
2879                         wpa_s->pending_join_wps_method = WPS_NFC;
2880                         os_memcpy(wpa_s->pending_join_dev_addr,
2881                                   go_dev_addr, ETH_ALEN);
2882                         os_memcpy(wpa_s->pending_join_iface_addr,
2883                                   bssid, ETH_ALEN);
2884                         goto accept_inv;
2885                 }
2886 #endif /* CONFIG_WPS_NFC */
2887
2888                 /*
2889                  * Do not accept the invitation automatically; notify user and
2890                  * request approval.
2891                  */
2892                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2893         }
2894
2895         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2896         if (grp) {
2897                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2898                            "running persistent group");
2899                 if (*go)
2900                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2901                 goto accept_inv;
2902         }
2903
2904         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2905             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2906                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2907                            "invitation to re-invoke a persistent group");
2908                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2909         } else if (!wpa_s->conf->persistent_reconnect)
2910                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2911
2912         for (s = wpa_s->conf->ssid; s; s = s->next) {
2913                 if (s->disabled == 2 &&
2914                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2915                     s->ssid_len == ssid_len &&
2916                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2917                         break;
2918         }
2919
2920         if (!s) {
2921                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2922                            " requested reinvocation of an unknown group",
2923                            MAC2STR(sa));
2924                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2925         }
2926
2927         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2928                 *go = 1;
2929                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2930                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2931                                    "interface is already in use - reject "
2932                                    "invitation");
2933                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2934                 }
2935                 if (wpa_s->p2p_mgmt)
2936                         os_memcpy(group_bssid, wpa_s->parent->own_addr,
2937                                   ETH_ALEN);
2938                 else
2939                         os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2940         } else if (s->mode == WPAS_MODE_P2P_GO) {
2941                 *go = 1;
2942                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2943                 {
2944                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2945                                    "interface address for the group");
2946                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2947                 }
2948                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2949                           ETH_ALEN);
2950         }
2951
2952 accept_inv:
2953         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2954
2955         best_freq = 0;
2956         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2957                           sizeof(struct wpa_used_freq_data));
2958         if (freqs) {
2959                 int num_channels = wpa_s->num_multichan_concurrent;
2960                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2961                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2962                 os_free(freqs);
2963         }
2964
2965         /* Get one of the frequencies currently in use */
2966         if (best_freq > 0) {
2967                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2968                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2969
2970                 if (wpa_s->num_multichan_concurrent < 2 ||
2971                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2972                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2973                         *force_freq = best_freq;
2974                 }
2975         }
2976
2977         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2978             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2979                 if (*go == 0) {
2980                         /* We are the client */
2981                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2982                                    "running a GO but we are capable of MCC, "
2983                                    "figure out the best channel to use");
2984                         *force_freq = 0;
2985                 } else if (!freq_included(wpa_s, channels, *force_freq)) {
2986                         /* We are the GO, and *force_freq is not in the
2987                          * intersection */
2988                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2989                                    "in intersection but we are capable of MCC, "
2990                                    "figure out the best channel to use",
2991                                    *force_freq);
2992                         *force_freq = 0;
2993                 }
2994         }
2995
2996         return P2P_SC_SUCCESS;
2997 }
2998
2999
3000 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
3001                                      const u8 *ssid, size_t ssid_len,
3002                                      const u8 *go_dev_addr, u8 status,
3003                                      int op_freq)
3004 {
3005         struct wpa_supplicant *wpa_s = ctx;
3006         struct wpa_ssid *s;
3007
3008         for (s = wpa_s->conf->ssid; s; s = s->next) {
3009                 if (s->disabled == 2 &&
3010                     s->ssid_len == ssid_len &&
3011                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3012                         break;
3013         }
3014
3015         if (status == P2P_SC_SUCCESS) {
3016                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3017                            " was accepted; op_freq=%d MHz, SSID=%s",
3018                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3019                 if (s) {
3020                         int go = s->mode == WPAS_MODE_P2P_GO;
3021                         wpas_p2p_group_add_persistent(
3022                                 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL,
3023                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
3024                                 1);
3025                 } else if (bssid) {
3026                         wpa_s->user_initiated_pd = 0;
3027                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3028                                       wpa_s->p2p_wps_method, 0, op_freq,
3029                                       ssid, ssid_len);
3030                 }
3031                 return;
3032         }
3033
3034         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3035                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3036                            " was rejected (status %u)", MAC2STR(sa), status);
3037                 return;
3038         }
3039
3040         if (!s) {
3041                 if (bssid) {
3042                         wpa_msg_global(wpa_s, MSG_INFO,
3043                                        P2P_EVENT_INVITATION_RECEIVED
3044                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3045                                        " bssid=" MACSTR " unknown-network",
3046                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3047                                        MAC2STR(bssid));
3048                 } else {
3049                         wpa_msg_global(wpa_s, MSG_INFO,
3050                                        P2P_EVENT_INVITATION_RECEIVED
3051                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3052                                        " unknown-network",
3053                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3054                 }
3055                 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3056                                                     bssid, 0, op_freq);
3057                 return;
3058         }
3059
3060         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3061                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3062                                "sa=" MACSTR " persistent=%d freq=%d",
3063                                MAC2STR(sa), s->id, op_freq);
3064         } else {
3065                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3066                                "sa=" MACSTR " persistent=%d",
3067                                MAC2STR(sa), s->id);
3068         }
3069         wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3070                                             s->id, op_freq);
3071 }
3072
3073
3074 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3075                                         struct wpa_ssid *ssid,
3076                                         const u8 *peer, int inv)
3077 {
3078         size_t i;
3079         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3080
3081         if (ssid == NULL)
3082                 return;
3083
3084         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3085                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3086                               ETH_ALEN) == 0)
3087                         break;
3088         }
3089         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3090                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3091                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3092                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3093                                    "due to invitation result", ssid->id);
3094                         wpas_notify_network_removed(wpa_s, ssid);
3095                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3096                         return;
3097                 }
3098                 return; /* Peer not found in client list */
3099         }
3100
3101         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3102                    "group %d client list%s",
3103                    MAC2STR(peer), ssid->id,
3104                    inv ? " due to invitation result" : "");
3105         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3106                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3107                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3108         ssid->num_p2p_clients--;
3109         if (p2p_wpa_s->conf->update_config &&
3110             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3111                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3112 }
3113
3114
3115 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3116                                           const u8 *peer)
3117 {
3118         struct wpa_ssid *ssid;
3119
3120         wpa_s = wpa_s->global->p2p_invite_group;
3121         if (wpa_s == NULL)
3122                 return; /* No known invitation group */
3123         ssid = wpa_s->current_ssid;
3124         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3125             !ssid->p2p_persistent_group)
3126                 return; /* Not operating as a GO in persistent group */
3127         ssid = wpas_p2p_get_persistent(wpa_s->p2pdev, peer,
3128                                        ssid->ssid, ssid->ssid_len);
3129         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3130 }
3131
3132
3133 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3134                                    const struct p2p_channels *channels,
3135                                    const u8 *peer, int neg_freq,
3136                                    int peer_oper_freq)
3137 {
3138         struct wpa_supplicant *wpa_s = ctx;
3139         struct wpa_ssid *ssid;
3140         int freq;
3141
3142         if (bssid) {
3143                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3144                                "status=%d " MACSTR,
3145                                status, MAC2STR(bssid));
3146         } else {
3147                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3148                                "status=%d ", status);
3149         }
3150         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3151
3152         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3153                    status, MAC2STR(peer));
3154         if (wpa_s->pending_invite_ssid_id == -1) {
3155                 struct wpa_supplicant *group_if =
3156                         wpa_s->global->p2p_invite_group;
3157
3158                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3159                         wpas_remove_persistent_client(wpa_s, peer);
3160
3161                 /*
3162                  * Invitation to an active group. If this is successful and we
3163                  * are the GO, set the client wait to postpone some concurrent
3164                  * operations and to allow provisioning and connection to happen
3165                  * more quickly.
3166                  */
3167                 if (status == P2P_SC_SUCCESS &&
3168                     group_if && group_if->current_ssid &&
3169                     group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3170                         os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3171 #ifdef CONFIG_TESTING_OPTIONS
3172                         if (group_if->p2p_go_csa_on_inv) {
3173                                 wpa_printf(MSG_DEBUG,
3174                                            "Testing: force P2P GO CSA after invitation");
3175                                 eloop_cancel_timeout(
3176                                         wpas_p2p_reconsider_moving_go,
3177                                         wpa_s, NULL);
3178                                 eloop_register_timeout(
3179                                         0, 50000,
3180                                         wpas_p2p_reconsider_moving_go,
3181                                         wpa_s, NULL);
3182                         }
3183 #endif /* CONFIG_TESTING_OPTIONS */
3184                 }
3185                 return;
3186         }
3187
3188         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3189                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3190                            "invitation exchange to indicate readiness for "
3191                            "re-invocation");
3192         }
3193
3194         if (status != P2P_SC_SUCCESS) {
3195                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3196                         ssid = wpa_config_get_network(
3197                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3198                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3199                 }
3200                 wpas_p2p_remove_pending_group_interface(wpa_s);
3201                 return;
3202         }
3203
3204         ssid = wpa_config_get_network(wpa_s->conf,
3205                                       wpa_s->pending_invite_ssid_id);
3206         if (ssid == NULL) {
3207                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3208                            "data matching with invitation");
3209                 return;
3210         }
3211
3212         /*
3213          * The peer could have missed our ctrl::ack frame for Invitation
3214          * Response and continue retransmitting the frame. To reduce the
3215          * likelihood of the peer not getting successful TX status for the
3216          * Invitation Response frame, wait a short time here before starting
3217          * the persistent group so that we will remain on the current channel to
3218          * acknowledge any possible retransmission from the peer.
3219          */
3220         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3221                 "starting persistent group");
3222         os_sleep(0, 50000);
3223
3224         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3225             freq_included(wpa_s, channels, neg_freq))
3226                 freq = neg_freq;
3227         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3228                  freq_included(wpa_s, channels, peer_oper_freq))
3229                 freq = peer_oper_freq;
3230         else
3231                 freq = 0;
3232
3233         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3234                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3235         wpas_p2p_group_add_persistent(wpa_s, ssid,
3236                                       ssid->mode == WPAS_MODE_P2P_GO,
3237                                       wpa_s->p2p_persistent_go_freq,
3238                                       freq,
3239                                       wpa_s->p2p_go_vht_center_freq2,
3240                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3241                                       wpa_s->p2p_go_max_oper_chwidth,
3242                                       channels,
3243                                       ssid->mode == WPAS_MODE_P2P_GO ?
3244                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3245                                       0, 1);
3246 }
3247
3248
3249 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3250                                     unsigned int freq)
3251 {
3252         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3253                 return 1;
3254         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3255 }
3256
3257
3258 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3259 {
3260         reg->channel[reg->channels] = chan;
3261         reg->channels++;
3262 }
3263
3264
3265 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3266                                      struct p2p_channels *chan,
3267                                      struct p2p_channels *cli_chan)
3268 {
3269         int i, cla = 0;
3270
3271         wpa_s->global->p2p_24ghz_social_channels = 1;
3272
3273         os_memset(cli_chan, 0, sizeof(*cli_chan));
3274
3275         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3276                    "band");
3277
3278         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3279         chan->reg_class[cla].reg_class = 81;
3280         chan->reg_class[cla].channels = 0;
3281         for (i = 0; i < 11; i++) {
3282                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3283                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3284         }
3285         if (chan->reg_class[cla].channels)
3286                 cla++;
3287
3288         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3289                    "band");
3290
3291         /* Operating class 115 - 5 GHz, channels 36-48 */
3292         chan->reg_class[cla].reg_class = 115;
3293         chan->reg_class[cla].channels = 0;
3294         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3295                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3296         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3297                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3298         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3299                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3300         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3301                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3302         if (chan->reg_class[cla].channels)
3303                 cla++;
3304
3305         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3306                    "band");
3307
3308         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3309         chan->reg_class[cla].reg_class = 124;
3310         chan->reg_class[cla].channels = 0;
3311         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3312                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3313         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3314                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3315         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3316                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3317         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3318                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3319         if (chan->reg_class[cla].channels)
3320                 cla++;
3321
3322         chan->reg_classes = cla;
3323         return 0;
3324 }
3325
3326
3327 enum chan_allowed {
3328         NOT_ALLOWED, NO_IR, ALLOWED
3329 };
3330
3331 static int has_channel(struct wpa_global *global,
3332                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3333 {
3334         int i;
3335         unsigned int freq;
3336
3337         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3338                 chan * 5;
3339         if (wpas_p2p_disallowed_freq(global, freq))
3340                 return NOT_ALLOWED;
3341
3342         for (i = 0; i < mode->num_channels; i++) {
3343                 if (mode->channels[i].chan == chan) {
3344                         if (flags)
3345                                 *flags = mode->channels[i].flag;
3346                         if (mode->channels[i].flag &
3347                             (HOSTAPD_CHAN_DISABLED |
3348                              HOSTAPD_CHAN_RADAR))
3349                                 return NOT_ALLOWED;
3350                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3351                                 return NO_IR;
3352                         return ALLOWED;
3353                 }
3354         }
3355
3356         return NOT_ALLOWED;
3357 }
3358
3359
3360 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3361                                      struct hostapd_hw_modes *mode,
3362                                      u8 channel)
3363 {
3364         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3365         unsigned int i;
3366
3367         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3368                 return 0;
3369
3370         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3371                 /*
3372                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3373                  * so the center channel is 6 channels away from the start/end.
3374                  */
3375                 if (channel >= center_channels[i] - 6 &&
3376                     channel <= center_channels[i] + 6)
3377                         return center_channels[i];
3378
3379         return 0;
3380 }
3381
3382
3383 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3384                                                struct hostapd_hw_modes *mode,
3385                                                u8 channel, u8 bw)
3386 {
3387         u8 center_chan;
3388         int i, flags;
3389         enum chan_allowed res, ret = ALLOWED;
3390
3391         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3392         if (!center_chan)
3393                 return NOT_ALLOWED;
3394         if (center_chan >= 58 && center_chan <= 138)
3395                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3396
3397         /* check all the channels are available */
3398         for (i = 0; i < 4; i++) {
3399                 int adj_chan = center_chan - 6 + i * 4;
3400
3401                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3402                 if (res == NOT_ALLOWED)
3403                         return NOT_ALLOWED;
3404                 if (res == NO_IR)
3405                         ret = NO_IR;
3406
3407                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3408                         return NOT_ALLOWED;
3409                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3410                         return NOT_ALLOWED;
3411                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3412                         return NOT_ALLOWED;
3413                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3414                         return NOT_ALLOWED;
3415         }
3416
3417         return ret;
3418 }
3419
3420
3421 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3422                                      struct hostapd_hw_modes *mode,
3423                                      u8 channel)
3424 {
3425         u8 center_channels[] = { 50, 114 };
3426         unsigned int i;
3427
3428         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3429                 return 0;
3430
3431         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3432                 /*
3433                  * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3434                  * so the center channel is 14 channels away from the start/end.
3435                  */
3436                 if (channel >= center_channels[i] - 14 &&
3437                     channel <= center_channels[i] + 14)
3438                         return center_channels[i];
3439
3440         return 0;
3441 }
3442
3443
3444 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3445                                                struct hostapd_hw_modes *mode,
3446                                                u8 channel, u8 bw)
3447 {
3448         u8 center_chan;
3449         int i, flags;
3450         enum chan_allowed res, ret = ALLOWED;
3451
3452         center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3453         if (!center_chan)
3454                 return NOT_ALLOWED;
3455         /* VHT 160 MHz uses DFS channels in most countries. */
3456
3457         /* Check all the channels are available */
3458         for (i = 0; i < 8; i++) {
3459                 int adj_chan = center_chan - 14 + i * 4;
3460
3461                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3462                 if (res == NOT_ALLOWED)
3463                         return NOT_ALLOWED;
3464
3465                 if (res == NO_IR)
3466                         ret = NO_IR;
3467
3468                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3469                         return NOT_ALLOWED;
3470                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3471                         return NOT_ALLOWED;
3472                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3473                         return NOT_ALLOWED;
3474                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3475                         return NOT_ALLOWED;
3476                 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3477                         return NOT_ALLOWED;
3478                 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3479                         return NOT_ALLOWED;
3480                 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3481                         return NOT_ALLOWED;
3482                 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3483                         return NOT_ALLOWED;
3484         }
3485
3486         return ret;
3487 }
3488
3489
3490 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3491                                                  struct hostapd_hw_modes *mode,
3492                                                  u8 channel, u8 bw)
3493 {
3494         int flag = 0;
3495         enum chan_allowed res, res2;
3496
3497         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3498         if (bw == BW40MINUS) {
3499                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3500                         return NOT_ALLOWED;
3501                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3502         } else if (bw == BW40PLUS) {
3503                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3504                         return NOT_ALLOWED;
3505                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3506         } else if (bw == BW80) {
3507                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3508         } else if (bw == BW160) {
3509                 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3510         }
3511
3512         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3513                 return NOT_ALLOWED;
3514         if (res == NO_IR || res2 == NO_IR)
3515                 return NO_IR;
3516         return res;
3517 }
3518
3519
3520 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3521                                    struct p2p_channels *chan,
3522                                    struct p2p_channels *cli_chan)
3523 {
3524         struct hostapd_hw_modes *mode;
3525         int cla, op, cli_cla;
3526
3527         if (wpa_s->hw.modes == NULL) {
3528                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3529                            "of all supported channels; assume dualband "
3530                            "support");
3531                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3532         }
3533
3534         cla = cli_cla = 0;
3535
3536         for (op = 0; global_op_class[op].op_class; op++) {
3537                 const struct oper_class_map *o = &global_op_class[op];
3538                 u8 ch;
3539                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3540
3541                 if (o->p2p == NO_P2P_SUPP)
3542                         continue;
3543
3544                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3545                 if (mode == NULL)
3546                         continue;
3547                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3548                         wpa_s->global->p2p_24ghz_social_channels = 1;
3549                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3550                         enum chan_allowed res;
3551                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3552                         if (res == ALLOWED) {
3553                                 if (reg == NULL) {
3554                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3555                                                    o->op_class);
3556                                         reg = &chan->reg_class[cla];
3557                                         cla++;
3558                                         reg->reg_class = o->op_class;
3559                                 }
3560                                 reg->channel[reg->channels] = ch;
3561                                 reg->channels++;
3562                         } else if (res == NO_IR &&
3563                                    wpa_s->conf->p2p_add_cli_chan) {
3564                                 if (cli_reg == NULL) {
3565                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3566                                                    o->op_class);
3567                                         cli_reg = &cli_chan->reg_class[cli_cla];
3568                                         cli_cla++;
3569                                         cli_reg->reg_class = o->op_class;
3570                                 }
3571                                 cli_reg->channel[cli_reg->channels] = ch;
3572                                 cli_reg->channels++;
3573                         }
3574                 }
3575                 if (reg) {
3576                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3577                                     reg->channel, reg->channels);
3578                 }
3579                 if (cli_reg) {
3580                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3581                                     cli_reg->channel, cli_reg->channels);
3582                 }
3583         }
3584
3585         chan->reg_classes = cla;
3586         cli_chan->reg_classes = cli_cla;
3587
3588         return 0;
3589 }
3590
3591
3592 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3593                            struct hostapd_hw_modes *mode, u8 channel)
3594 {
3595         int op;
3596         enum chan_allowed ret;
3597
3598         for (op = 0; global_op_class[op].op_class; op++) {
3599                 const struct oper_class_map *o = &global_op_class[op];
3600                 u8 ch;
3601
3602                 if (o->p2p == NO_P2P_SUPP)
3603                         continue;
3604
3605                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3606                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3607                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3608                             ch != channel)
3609                                 continue;
3610                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3611                         if (ret == ALLOWED)
3612                                 return (o->bw == BW40MINUS) ? -1 : 1;
3613                 }
3614         }
3615         return 0;
3616 }
3617
3618
3619 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3620                               struct hostapd_hw_modes *mode, u8 channel)
3621 {
3622         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3623                 return 0;
3624
3625         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3626 }
3627
3628
3629 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3630                                struct hostapd_hw_modes *mode, u8 channel)
3631 {
3632         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3633                 return 0;
3634         return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3635 }
3636
3637
3638 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3639                         size_t buf_len)
3640 {
3641         struct wpa_supplicant *wpa_s = ctx;
3642
3643         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3644                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3645                         break;
3646         }
3647         if (wpa_s == NULL)
3648                 return -1;
3649
3650         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3651 }
3652
3653
3654 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3655                                               const u8 *ssid, size_t ssid_len)
3656 {
3657         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3658                 struct wpa_ssid *s = wpa_s->current_ssid;
3659                 if (s == NULL)
3660                         continue;
3661                 if (s->mode != WPAS_MODE_P2P_GO &&
3662                     s->mode != WPAS_MODE_AP &&
3663                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3664                         continue;
3665                 if (s->ssid_len != ssid_len ||
3666                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3667                         continue;
3668                 return wpa_s;
3669         }
3670
3671         return NULL;
3672
3673 }
3674
3675
3676 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3677                                                   const u8 *peer_dev_addr)
3678 {
3679         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3680                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3681                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3682                         continue;
3683                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3684                         return wpa_s;
3685         }
3686
3687         return NULL;
3688 }
3689
3690
3691 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3692 {
3693         struct wpa_supplicant *wpa_s = ctx;
3694
3695         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3696 }
3697
3698
3699 static int wpas_is_concurrent_session_active(void *ctx)
3700 {
3701         struct wpa_supplicant *wpa_s = ctx;
3702         struct wpa_supplicant *ifs;
3703
3704         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3705                 if (ifs == wpa_s)
3706                         continue;
3707                 if (ifs->wpa_state > WPA_ASSOCIATED)
3708                         return 1;
3709         }
3710         return 0;
3711 }
3712
3713
3714 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3715 {
3716         struct wpa_supplicant *wpa_s = ctx;
3717         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3718 }
3719
3720
3721 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3722                                   const char *conf_p2p_dev)
3723 {
3724         struct wpa_interface iface;
3725         struct wpa_supplicant *p2pdev_wpa_s;
3726         char ifname[100];
3727         char force_name[100];
3728         int ret;
3729
3730         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3731                           wpa_s->ifname);
3732         if (os_snprintf_error(sizeof(ifname), ret))
3733                 return -1;
3734         force_name[0] = '\0';
3735         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3736         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3737                              force_name, wpa_s->pending_interface_addr, NULL);
3738         if (ret < 0) {
3739                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3740                 return ret;
3741         }
3742         os_strlcpy(wpa_s->pending_interface_name, ifname,
3743                    sizeof(wpa_s->pending_interface_name));
3744
3745         os_memset(&iface, 0, sizeof(iface));
3746         iface.p2p_mgmt = 1;
3747         iface.ifname = wpa_s->pending_interface_name;
3748         iface.driver = wpa_s->driver->name;
3749         iface.driver_param = wpa_s->conf->driver_param;
3750
3751         /*
3752          * If a P2P Device configuration file was given, use it as the interface
3753          * configuration file (instead of using parent's configuration file.
3754          */
3755         if (conf_p2p_dev) {
3756                 iface.confname = conf_p2p_dev;
3757                 iface.ctrl_interface = NULL;
3758         } else {
3759                 iface.confname = wpa_s->confname;
3760                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3761         }
3762
3763         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3764         if (!p2pdev_wpa_s) {
3765                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3766                 return -1;
3767         }
3768
3769         p2pdev_wpa_s->p2pdev = p2pdev_wpa_s;
3770         wpa_s->pending_interface_name[0] = '\0';
3771         return 0;
3772 }
3773
3774
3775 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3776                                const u8 *noa, size_t noa_len)
3777 {
3778         struct wpa_supplicant *wpa_s, *intf = ctx;
3779         char hex[100];
3780
3781         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3782                 if (wpa_s->waiting_presence_resp)
3783                         break;
3784         }
3785         if (!wpa_s) {
3786                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3787                 return;
3788         }
3789         wpa_s->waiting_presence_resp = 0;
3790
3791         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3792         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3793                 " status=%u noa=%s", MAC2STR(src), status, hex);
3794 }
3795
3796
3797 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3798                                      size_t ssid_len, u8 *go_dev_addr,
3799                                      u8 *ret_ssid, size_t *ret_ssid_len,
3800                                      u8 *intended_iface_addr)
3801 {
3802         struct wpa_supplicant *wpa_s = ctx;
3803         struct wpa_ssid *s;
3804
3805         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3806         if (s) {
3807                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3808                 *ret_ssid_len = s->ssid_len;
3809                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3810
3811                 if (s->mode != WPAS_MODE_P2P_GO) {
3812                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3813                 } else if (wpas_p2p_create_iface(wpa_s)) {
3814                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3815                                 return 0;
3816
3817                         os_memcpy(intended_iface_addr,
3818                                   wpa_s->pending_interface_addr, ETH_ALEN);
3819                 } else {
3820                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3821                                   ETH_ALEN);
3822                 }
3823                 return 1;
3824         }
3825
3826         return 0;
3827 }
3828
3829
3830 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3831                             u8 *ssid, size_t *ssid_len, int *group_iface,
3832                             unsigned int *freq)
3833 {
3834         struct wpa_supplicant *wpa_s = ctx;
3835         struct wpa_supplicant *go;
3836         struct wpa_ssid *s;
3837
3838         /*
3839          * group_iface will be set to 1 only if a dedicated interface for P2P
3840          * role is required. First, we try to reuse an active GO. However,
3841          * if it is not present, we will try to reactivate an existing
3842          * persistent group and set group_iface to 1, so the caller will know
3843          * that the pending interface should be used.
3844          */
3845         *group_iface = 0;
3846
3847         if (freq)
3848                 *freq = 0;
3849
3850         go = wpas_p2p_get_go_group(wpa_s);
3851         if (!go) {
3852                 s = wpas_p2p_get_persistent_go(wpa_s);
3853                 *group_iface = wpas_p2p_create_iface(wpa_s);
3854                 if (s)
3855                         os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3856                 else
3857                         return 0;
3858         } else {
3859                 s = go->current_ssid;
3860                 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3861                 if (freq)
3862                         *freq = go->assoc_freq;
3863         }
3864
3865         os_memcpy(ssid, s->ssid, s->ssid_len);
3866         *ssid_len = s->ssid_len;
3867
3868         return 1;
3869 }
3870
3871
3872 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3873                                     const u8 *ssid, size_t ssid_len)
3874 {
3875         struct wpa_supplicant *wpa_s = ctx;
3876         struct wpa_ssid *s;
3877         int save_config = 0;
3878         size_t i;
3879
3880         /* Start with our first choice of Persistent Groups */
3881         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3882                 if (go && ssid && ssid_len &&
3883                     s->ssid_len == ssid_len &&
3884                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3885                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3886                         break;
3887
3888                 /* Remove stale persistent group */
3889                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3890                         wpa_config_remove_network(wpa_s->conf, s->id);
3891                         save_config = 1;
3892                         continue;
3893                 }
3894
3895                 for (i = 0; i < s->num_p2p_clients; i++) {
3896                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3897                                       peer, ETH_ALEN) != 0)
3898                                 continue;
3899
3900                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3901                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3902                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3903                         break;
3904                 }
3905                 s->num_p2p_clients--;
3906                 save_config = 1;
3907         }
3908
3909         if (save_config)
3910                 p2p_config_write(wpa_s);
3911
3912         /* Return TRUE if valid SSID remains */
3913         return s != NULL;
3914 }
3915
3916
3917 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3918                                        const u8 *feat_cap, size_t feat_cap_len)
3919 {
3920         static const char pref[] = " feature_cap=";
3921         int ret;
3922
3923         buf[0] = '\0';
3924
3925         /*
3926          * We expect a feature capability to contain at least one byte to be
3927          * reported. The string buffer provided by the caller function is
3928          * expected to be big enough to contain all bytes of the attribute for
3929          * known specifications. This function truncates the reported bytes if
3930          * the feature capability data exceeds the string buffer size.
3931          */
3932         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3933                 return;
3934
3935         os_memcpy(buf, pref, sizeof(pref));
3936         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3937                                buf_len - sizeof(pref) + 1,
3938                                feat_cap, feat_cap_len);
3939
3940         if (ret != (2 * (int) feat_cap_len))
3941                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3942 }
3943
3944
3945 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3946                                     const u8 *adv_mac, const u8 *ses_mac,
3947                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3948                                     u8 conncap, int passwd_id,
3949                                     const u8 *persist_ssid,
3950                                     size_t persist_ssid_size, int response_done,
3951                                     int prov_start, const char *session_info,
3952                                     const u8 *feat_cap, size_t feat_cap_len,
3953                                     unsigned int freq,
3954                                     const u8 *group_ssid, size_t group_ssid_len)
3955 {
3956         struct wpa_supplicant *wpa_s = ctx;
3957         u8 mac[ETH_ALEN];
3958         struct wpa_ssid *persistent_go, *stale, *s = NULL;
3959         int save_config = 0;
3960         struct wpa_supplicant *go_wpa_s;
3961         char feat_cap_str[256];
3962
3963         if (!dev)
3964                 return;
3965
3966         os_memset(mac, 0, ETH_ALEN);
3967         if (!adv_mac)
3968                 adv_mac = mac;
3969         if (!ses_mac)
3970                 ses_mac = mac;
3971         if (!grp_mac)
3972                 grp_mac = mac;
3973
3974         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3975                                    feat_cap, feat_cap_len);
3976
3977         if (prov_start) {
3978                 if (session_info == NULL) {
3979                         wpa_msg_global(wpa_s, MSG_INFO,
3980                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3981                                        " adv_id=%x conncap=%x"
3982                                        " adv_mac=" MACSTR
3983                                        " session=%x mac=" MACSTR
3984                                        " dev_passwd_id=%d%s",
3985                                        MAC2STR(dev), adv_id, conncap,
3986                                        MAC2STR(adv_mac),
3987                                        ses_id, MAC2STR(ses_mac),
3988                                        passwd_id, feat_cap_str);
3989                 } else {
3990                         wpa_msg_global(wpa_s, MSG_INFO,
3991                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3992                                        " adv_id=%x conncap=%x"
3993                                        " adv_mac=" MACSTR
3994                                        " session=%x mac=" MACSTR
3995                                        " dev_passwd_id=%d info='%s'%s",
3996                                        MAC2STR(dev), adv_id, conncap,
3997                                        MAC2STR(adv_mac),
3998                                        ses_id, MAC2STR(ses_mac),
3999                                        passwd_id, session_info, feat_cap_str);
4000                 }
4001                 return;
4002         }
4003
4004         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
4005         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4006
4007         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4008                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4009                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4010
4011                 if (persistent_go && !persistent_go->num_p2p_clients) {
4012                         /* remove empty persistent GO */
4013                         wpa_config_remove_network(wpa_s->conf,
4014                                                   persistent_go->id);
4015                 }
4016
4017                 wpa_msg_global(wpa_s, MSG_INFO,
4018                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4019                                " status=%d"
4020                                " adv_id=%x adv_mac=" MACSTR
4021                                " session=%x mac=" MACSTR "%s",
4022                                MAC2STR(dev), status,
4023                                adv_id, MAC2STR(adv_mac),
4024                                ses_id, MAC2STR(ses_mac), feat_cap_str);
4025                 return;
4026         }
4027
4028         /* Clean up stale persistent groups with this device */
4029         if (persist_ssid && persist_ssid_size)
4030                 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4031                                             persist_ssid_size);
4032
4033         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4034             is_zero_ether_addr(grp_mac)) {
4035                 wpa_dbg(wpa_s, MSG_ERROR,
4036                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4037                 return;
4038         }
4039
4040         for (;;) {
4041                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4042                 if (!stale)
4043                         break;
4044
4045                 if (s && s->ssid_len == stale->ssid_len &&
4046                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4047                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4048                         break;
4049
4050                 /* Remove stale persistent group */
4051                 if (stale->mode != WPAS_MODE_P2P_GO ||
4052                     stale->num_p2p_clients <= 1) {
4053                         wpa_config_remove_network(wpa_s->conf, stale->id);
4054                 } else {
4055                         size_t i;
4056
4057                         for (i = 0; i < stale->num_p2p_clients; i++) {
4058                                 if (os_memcmp(stale->p2p_client_list +
4059                                               i * ETH_ALEN,
4060                                               dev, ETH_ALEN) == 0) {
4061                                         os_memmove(stale->p2p_client_list +
4062                                                    i * ETH_ALEN,
4063                                                    stale->p2p_client_list +
4064                                                    (i + 1) * ETH_ALEN,
4065                                                    (stale->num_p2p_clients -
4066                                                     i - 1) * ETH_ALEN);
4067                                         break;
4068                                 }
4069                         }
4070                         stale->num_p2p_clients--;
4071                 }
4072                 save_config = 1;
4073         }
4074
4075         if (save_config)
4076                 p2p_config_write(wpa_s);
4077
4078         if (s) {
4079                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4080                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4081
4082                 if (persistent_go && s != persistent_go &&
4083                     !persistent_go->num_p2p_clients) {
4084                         /* remove empty persistent GO */
4085                         wpa_config_remove_network(wpa_s->conf,
4086                                                   persistent_go->id);
4087                         /* Save config */
4088                 }
4089
4090                 wpa_msg_global(wpa_s, MSG_INFO,
4091                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4092                                " status=%d"
4093                                " adv_id=%x adv_mac=" MACSTR
4094                                " session=%x mac=" MACSTR
4095                                " persist=%d%s",
4096                                MAC2STR(dev), status,
4097                                adv_id, MAC2STR(adv_mac),
4098                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4099                 return;
4100         }
4101
4102         if (conncap == P2PS_SETUP_GROUP_OWNER) {
4103                 /*
4104                  * We need to copy the interface name. Simply saving a
4105                  * pointer isn't enough, since if we use pending_interface_name
4106                  * it will be overwritten when the group is added.
4107                  */
4108                 char go_ifname[100];
4109
4110                 go_ifname[0] = '\0';
4111                 if (!go_wpa_s) {
4112                         wpa_s->global->pending_p2ps_group = 1;
4113                         wpa_s->global->pending_p2ps_group_freq = freq;
4114
4115                         if (!wpas_p2p_create_iface(wpa_s))
4116                                 os_memcpy(go_ifname, wpa_s->ifname,
4117                                           sizeof(go_ifname));
4118                         else if (wpa_s->pending_interface_name[0])
4119                                 os_memcpy(go_ifname,
4120                                           wpa_s->pending_interface_name,
4121                                           sizeof(go_ifname));
4122
4123                         if (!go_ifname[0]) {
4124                                 wpas_p2ps_prov_complete(
4125                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4126                                         dev, adv_mac, ses_mac,
4127                                         grp_mac, adv_id, ses_id, 0, 0,
4128                                         NULL, 0, 0, 0, NULL, NULL, 0, 0,
4129                                         NULL, 0);
4130                                 return;
4131                         }
4132
4133                         /* If PD Resp complete, start up the GO */
4134                         if (response_done && persistent_go) {
4135                                 wpas_p2p_group_add_persistent(
4136                                         wpa_s, persistent_go,
4137                                         0, 0, freq, 0, 0, 0, 0, NULL,
4138                                         persistent_go->mode ==
4139                                         WPAS_MODE_P2P_GO ?
4140                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4141                                         0, 0);
4142                         } else if (response_done) {
4143                                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4144                         }
4145
4146                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4147                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4148                                           ETH_ALEN);
4149                                 wpa_s->p2ps_method_config_any = 1;
4150                         }
4151                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4152                         os_memcpy(go_ifname, go_wpa_s->ifname,
4153                                   sizeof(go_ifname));
4154
4155                         if (is_zero_ether_addr(grp_mac)) {
4156                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4157                                         "P2P: Setting PIN-1 for ANY");
4158                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4159                                                           "12345670", NULL, 0,
4160                                                           0);
4161                         } else {
4162                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4163                                         "P2P: Setting PIN-1 for " MACSTR,
4164                                         MAC2STR(grp_mac));
4165                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4166                                                           "12345670", NULL, 0,
4167                                                           0);
4168                         }
4169
4170                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4171                         wpa_s->p2ps_method_config_any = 1;
4172                 }
4173
4174                 wpa_msg_global(wpa_s, MSG_INFO,
4175                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4176                                " status=%d conncap=%x"
4177                                " adv_id=%x adv_mac=" MACSTR
4178                                " session=%x mac=" MACSTR
4179                                " dev_passwd_id=%d go=%s%s",
4180                                MAC2STR(dev), status, conncap,
4181                                adv_id, MAC2STR(adv_mac),
4182                                ses_id, MAC2STR(ses_mac),
4183                                passwd_id, go_ifname, feat_cap_str);
4184                 return;
4185         }
4186
4187         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4188                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4189
4190         if (persistent_go && !persistent_go->num_p2p_clients) {
4191                 /* remove empty persistent GO */
4192                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4193         }
4194
4195         if (conncap == P2PS_SETUP_CLIENT) {
4196                 char ssid_hex[32 * 2 + 1];
4197
4198                 if (group_ssid)
4199                         wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex),
4200                                          group_ssid, group_ssid_len);
4201                 else
4202                         ssid_hex[0] = '\0';
4203                 wpa_msg_global(wpa_s, MSG_INFO,
4204                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4205                                " status=%d conncap=%x"
4206                                " adv_id=%x adv_mac=" MACSTR
4207                                " session=%x mac=" MACSTR
4208                                " dev_passwd_id=%d join=" MACSTR "%s%s%s",
4209                                MAC2STR(dev), status, conncap,
4210                                adv_id, MAC2STR(adv_mac),
4211                                ses_id, MAC2STR(ses_mac),
4212                                passwd_id, MAC2STR(grp_mac), feat_cap_str,
4213                                group_ssid ? " group_ssid=" : "", ssid_hex);
4214         } else {
4215                 wpa_msg_global(wpa_s, MSG_INFO,
4216                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4217                                " status=%d conncap=%x"
4218                                " adv_id=%x adv_mac=" MACSTR
4219                                " session=%x mac=" MACSTR
4220                                " dev_passwd_id=%d%s",
4221                                MAC2STR(dev), status, conncap,
4222                                adv_id, MAC2STR(adv_mac),
4223                                ses_id, MAC2STR(ses_mac),
4224                                passwd_id, feat_cap_str);
4225         }
4226 }
4227
4228
4229 static int _wpas_p2p_in_progress(void *ctx)
4230 {
4231         struct wpa_supplicant *wpa_s = ctx;
4232         return wpas_p2p_in_progress(wpa_s);
4233 }
4234
4235
4236 static int wpas_prov_disc_resp_cb(void *ctx)
4237 {
4238         struct wpa_supplicant *wpa_s = ctx;
4239         struct wpa_ssid *persistent_go;
4240         unsigned int freq;
4241
4242         if (!wpa_s->global->pending_p2ps_group)
4243                 return 0;
4244
4245         freq = wpa_s->global->pending_p2ps_group_freq;
4246         wpa_s->global->pending_p2ps_group_freq = 0;
4247         wpa_s->global->pending_p2ps_group = 0;
4248
4249         if (wpas_p2p_get_go_group(wpa_s))
4250                 return 0;
4251         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4252
4253         if (persistent_go) {
4254                 wpas_p2p_group_add_persistent(
4255                         wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL,
4256                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4257                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4258         } else {
4259                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4260         }
4261
4262         return 1;
4263 }
4264
4265
4266 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4267                                        unsigned int *len,
4268                                        unsigned int *freq_list)
4269 {
4270         struct wpa_supplicant *wpa_s = ctx;
4271
4272         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4273                                           WPA_IF_P2P_CLIENT, len, freq_list);
4274 }
4275
4276
4277 /**
4278  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4279  * @global: Pointer to global data from wpa_supplicant_init()
4280  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4281  * Returns: 0 on success, -1 on failure
4282  */
4283 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4284 {
4285         struct p2p_config p2p;
4286         int i;
4287
4288         if (wpa_s->conf->p2p_disabled)
4289                 return 0;
4290
4291         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4292                 return 0;
4293
4294         if (global->p2p)
4295                 return 0;
4296
4297         os_memset(&p2p, 0, sizeof(p2p));
4298         p2p.cb_ctx = wpa_s;
4299         p2p.debug_print = wpas_p2p_debug_print;
4300         p2p.p2p_scan = wpas_p2p_scan;
4301         p2p.send_action = wpas_send_action;
4302         p2p.send_action_done = wpas_send_action_done;
4303         p2p.go_neg_completed = wpas_go_neg_completed;
4304         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4305         p2p.dev_found = wpas_dev_found;
4306         p2p.dev_lost = wpas_dev_lost;
4307         p2p.find_stopped = wpas_find_stopped;
4308         p2p.start_listen = wpas_start_listen;
4309         p2p.stop_listen = wpas_stop_listen;
4310         p2p.send_probe_resp = wpas_send_probe_resp;
4311         p2p.sd_request = wpas_sd_request;
4312         p2p.sd_response = wpas_sd_response;
4313         p2p.prov_disc_req = wpas_prov_disc_req;
4314         p2p.prov_disc_resp = wpas_prov_disc_resp;
4315         p2p.prov_disc_fail = wpas_prov_disc_fail;
4316         p2p.invitation_process = wpas_invitation_process;
4317         p2p.invitation_received = wpas_invitation_received;
4318         p2p.invitation_result = wpas_invitation_result;
4319         p2p.get_noa = wpas_get_noa;
4320         p2p.go_connected = wpas_go_connected;
4321         p2p.presence_resp = wpas_presence_resp;
4322         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4323         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4324         p2p.get_persistent_group = wpas_get_persistent_group;
4325         p2p.get_go_info = wpas_get_go_info;
4326         p2p.remove_stale_groups = wpas_remove_stale_groups;
4327         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4328         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4329         p2p.p2ps_group_capability = p2ps_group_capability;
4330         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4331
4332         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4333         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4334         p2p.dev_name = wpa_s->conf->device_name;
4335         p2p.manufacturer = wpa_s->conf->manufacturer;
4336         p2p.model_name = wpa_s->conf->model_name;
4337         p2p.model_number = wpa_s->conf->model_number;
4338         p2p.serial_number = wpa_s->conf->serial_number;
4339         if (wpa_s->wps) {
4340                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4341                 p2p.config_methods = wpa_s->wps->config_methods;
4342         }
4343
4344         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4345                 wpa_printf(MSG_ERROR,
4346                            "P2P: Failed to configure supported channel list");
4347                 return -1;
4348         }
4349
4350         if (wpa_s->conf->p2p_listen_reg_class &&
4351             wpa_s->conf->p2p_listen_channel) {
4352                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4353                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4354                 p2p.channel_forced = 1;
4355         } else {
4356                 /*
4357                  * Pick one of the social channels randomly as the listen
4358                  * channel.
4359                  */
4360                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4361                                                  &p2p.channel) != 0) {
4362                         wpa_printf(MSG_INFO,
4363                                    "P2P: No social channels supported by the driver - do not enable P2P");
4364                         return 0;
4365                 }
4366                 p2p.channel_forced = 0;
4367         }
4368         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4369                    p2p.reg_class, p2p.channel);
4370
4371         if (wpa_s->conf->p2p_oper_reg_class &&
4372             wpa_s->conf->p2p_oper_channel) {
4373                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4374                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4375                 p2p.cfg_op_channel = 1;
4376                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4377                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4378
4379         } else {
4380                 /*
4381                  * Use random operation channel from 2.4 GHz band social
4382                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4383                  * other preference is indicated.
4384                  */
4385                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4386                                                  &p2p.op_channel) != 0) {
4387                         wpa_printf(MSG_ERROR,
4388                                    "P2P: Failed to select random social channel as operation channel");
4389                         return -1;
4390                 }
4391                 p2p.cfg_op_channel = 0;
4392                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4393                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4394         }
4395
4396         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4397                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4398                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4399         }
4400
4401         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4402                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4403                 p2p.country[2] = 0x04;
4404         } else
4405                 os_memcpy(p2p.country, "XX\x04", 3);
4406
4407         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4408                   WPS_DEV_TYPE_LEN);
4409
4410         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4411         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4412                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4413
4414         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4415                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4416
4417         p2p.max_peers = 100;
4418
4419         if (wpa_s->conf->p2p_ssid_postfix) {
4420                 p2p.ssid_postfix_len =
4421                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4422                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4423                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4424                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4425                           p2p.ssid_postfix_len);
4426         }
4427
4428         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4429
4430         p2p.max_listen = wpa_s->max_remain_on_chan;
4431
4432         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4433             wpa_s->conf->p2p_passphrase_len <= 63)
4434                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4435         else
4436                 p2p.passphrase_len = 8;
4437
4438         global->p2p = p2p_init(&p2p);
4439         if (global->p2p == NULL)
4440                 return -1;
4441         global->p2p_init_wpa_s = wpa_s;
4442
4443         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4444                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4445                         continue;
4446                 p2p_add_wps_vendor_extension(
4447                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4448         }
4449
4450         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4451
4452         return 0;
4453 }
4454
4455
4456 /**
4457  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4458  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4459  *
4460  * This function deinitialize per-interface P2P data.
4461  */
4462 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4463 {
4464         if (wpa_s->driver && wpa_s->drv_priv)
4465                 wpa_drv_probe_req_report(wpa_s, 0);
4466
4467         if (wpa_s->go_params) {
4468                 /* Clear any stored provisioning info */
4469                 p2p_clear_provisioning_info(
4470                         wpa_s->global->p2p,
4471                         wpa_s->go_params->peer_device_addr);
4472         }
4473
4474         os_free(wpa_s->go_params);
4475         wpa_s->go_params = NULL;
4476         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4477         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4478         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4479         wpa_s->p2p_long_listen = 0;
4480         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4481         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4482         wpas_p2p_remove_pending_group_interface(wpa_s);
4483         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4484         wpas_p2p_listen_work_done(wpa_s);
4485         if (wpa_s->p2p_send_action_work) {
4486                 os_free(wpa_s->p2p_send_action_work->ctx);
4487                 radio_work_done(wpa_s->p2p_send_action_work);
4488                 wpa_s->p2p_send_action_work = NULL;
4489         }
4490         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4491
4492         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4493         wpa_s->p2p_oob_dev_pw = NULL;
4494
4495         os_free(wpa_s->p2p_group_common_freqs);
4496         wpa_s->p2p_group_common_freqs = NULL;
4497         wpa_s->p2p_group_common_freqs_num = 0;
4498
4499         /* TODO: remove group interface from the driver if this wpa_s instance
4500          * is on top of a P2P group interface */
4501 }
4502
4503
4504 /**
4505  * wpas_p2p_deinit_global - Deinitialize global P2P module
4506  * @global: Pointer to global data from wpa_supplicant_init()
4507  *
4508  * This function deinitializes the global (per device) P2P module.
4509  */
4510 static void wpas_p2p_deinit_global(struct wpa_global *global)
4511 {
4512         struct wpa_supplicant *wpa_s, *tmp;
4513
4514         wpa_s = global->ifaces;
4515
4516         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4517
4518         /* Remove remaining P2P group interfaces */
4519         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4520                 wpa_s = wpa_s->next;
4521         while (wpa_s) {
4522                 tmp = global->ifaces;
4523                 while (tmp &&
4524                        (tmp == wpa_s ||
4525                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4526                         tmp = tmp->next;
4527                 }
4528                 if (tmp == NULL)
4529                         break;
4530                 /* Disconnect from the P2P group and deinit the interface */
4531                 wpas_p2p_disconnect(tmp);
4532         }
4533
4534         /*
4535          * Deinit GO data on any possibly remaining interface (if main
4536          * interface is used as GO).
4537          */
4538         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4539                 if (wpa_s->ap_iface)
4540                         wpas_p2p_group_deinit(wpa_s);
4541         }
4542
4543         p2p_deinit(global->p2p);
4544         global->p2p = NULL;
4545         global->p2p_init_wpa_s = NULL;
4546 }
4547
4548
4549 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4550 {
4551         if (wpa_s->conf->p2p_no_group_iface)
4552                 return 0; /* separate interface disabled per configuration */
4553         if (wpa_s->drv_flags &
4554             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4555              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4556                 return 1; /* P2P group requires a new interface in every case
4557                            */
4558         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4559                 return 0; /* driver does not support concurrent operations */
4560         if (wpa_s->global->ifaces->next)
4561                 return 1; /* more that one interface already in use */
4562         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4563                 return 1; /* this interface is already in use */
4564         return 0;
4565 }
4566
4567
4568 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4569                                  const u8 *peer_addr,
4570                                  enum p2p_wps_method wps_method,
4571                                  int go_intent, const u8 *own_interface_addr,
4572                                  unsigned int force_freq, int persistent_group,
4573                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4574 {
4575         if (persistent_group && wpa_s->conf->persistent_reconnect)
4576                 persistent_group = 2;
4577
4578         /*
4579          * Increase GO config timeout if HT40 is used since it takes some time
4580          * to scan channels for coex purposes before the BSS can be started.
4581          */
4582         p2p_set_config_timeout(wpa_s->global->p2p,
4583                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4584
4585         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4586                            go_intent, own_interface_addr, force_freq,
4587                            persistent_group, ssid ? ssid->ssid : NULL,
4588                            ssid ? ssid->ssid_len : 0,
4589                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4590                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4591                            0);
4592 }
4593
4594
4595 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4596                                 const u8 *peer_addr,
4597                                 enum p2p_wps_method wps_method,
4598                                 int go_intent, const u8 *own_interface_addr,
4599                                 unsigned int force_freq, int persistent_group,
4600                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4601 {
4602         if (persistent_group && wpa_s->conf->persistent_reconnect)
4603                 persistent_group = 2;
4604
4605         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4606                              go_intent, own_interface_addr, force_freq,
4607                              persistent_group, ssid ? ssid->ssid : NULL,
4608                              ssid ? ssid->ssid_len : 0, pref_freq,
4609                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4610                              0);
4611 }
4612
4613
4614 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4615 {
4616         wpa_s->p2p_join_scan_count++;
4617         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4618                    wpa_s->p2p_join_scan_count);
4619         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4620                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4621                            " for join operationg - stop join attempt",
4622                            MAC2STR(wpa_s->pending_join_iface_addr));
4623                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4624                 if (wpa_s->p2p_auto_pd) {
4625                         wpa_s->p2p_auto_pd = 0;
4626                         wpa_msg_global(wpa_s, MSG_INFO,
4627                                        P2P_EVENT_PROV_DISC_FAILURE
4628                                        " p2p_dev_addr=" MACSTR " status=N/A",
4629                                        MAC2STR(wpa_s->pending_join_dev_addr));
4630                         return;
4631                 }
4632                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4633                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4634                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4635         }
4636 }
4637
4638
4639 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4640 {
4641         int res;
4642         unsigned int num, i;
4643         struct wpa_used_freq_data *freqs;
4644
4645         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4646                 /* Multiple channels are supported and not all are in use */
4647                 return 0;
4648         }
4649
4650         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4651                           sizeof(struct wpa_used_freq_data));
4652         if (!freqs)
4653                 return 1;
4654
4655         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4656                                         wpa_s->num_multichan_concurrent);
4657
4658         for (i = 0; i < num; i++) {
4659                 if (freqs[i].freq == freq) {
4660                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4661                                    freq);
4662                         res = 0;
4663                         goto exit_free;
4664                 }
4665         }
4666
4667         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4668         res = 1;
4669
4670 exit_free:
4671         os_free(freqs);
4672         return res;
4673 }
4674
4675
4676 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4677                             const u8 *peer_dev_addr)
4678 {
4679         struct wpa_bss *bss;
4680         int updated;
4681
4682         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4683         if (bss == NULL)
4684                 return -1;
4685         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4686                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4687                            "last scan");
4688                 return 0;
4689         }
4690
4691         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4692                                     &bss->last_update);
4693         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4694                    "%ld.%06ld (%supdated in last scan)",
4695                    bss->last_update.sec, bss->last_update.usec,
4696                    updated ? "": "not ");
4697
4698         return updated;
4699 }
4700
4701
4702 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4703                                    struct wpa_scan_results *scan_res)
4704 {
4705         struct wpa_bss *bss = NULL;
4706         int freq;
4707         u8 iface_addr[ETH_ALEN];
4708
4709         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4710
4711         if (wpa_s->global->p2p_disabled)
4712                 return;
4713
4714         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4715                    scan_res ? (int) scan_res->num : -1,
4716                    wpa_s->p2p_auto_join ? "auto_" : "");
4717
4718         if (scan_res)
4719                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4720
4721         if (wpa_s->p2p_auto_pd) {
4722                 int join = wpas_p2p_peer_go(wpa_s,
4723                                             wpa_s->pending_join_dev_addr);
4724                 if (join == 0 &&
4725                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4726                         wpa_s->auto_pd_scan_retry++;
4727                         bss = wpa_bss_get_bssid_latest(
4728                                 wpa_s, wpa_s->pending_join_dev_addr);
4729                         if (bss) {
4730                                 freq = bss->freq;
4731                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4732                                            "the peer " MACSTR " at %d MHz",
4733                                            wpa_s->auto_pd_scan_retry,
4734                                            MAC2STR(wpa_s->
4735                                                    pending_join_dev_addr),
4736                                            freq);
4737                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4738                                 return;
4739                         }
4740                 }
4741
4742                 if (join < 0)
4743                         join = 0;
4744
4745                 wpa_s->p2p_auto_pd = 0;
4746                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4747                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4748                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4749                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4750                                       wpa_s->pending_join_dev_addr, NULL,
4751                                       wpa_s->pending_pd_config_methods, join,
4752                                       0, wpa_s->user_initiated_pd) < 0) {
4753                         wpa_s->p2p_auto_pd = 0;
4754                         wpa_msg_global(wpa_s, MSG_INFO,
4755                                        P2P_EVENT_PROV_DISC_FAILURE
4756                                        " p2p_dev_addr=" MACSTR " status=N/A",
4757                                        MAC2STR(wpa_s->pending_join_dev_addr));
4758                 }
4759                 return;
4760         }
4761
4762         if (wpa_s->p2p_auto_join) {
4763                 int join = wpas_p2p_peer_go(wpa_s,
4764                                             wpa_s->pending_join_dev_addr);
4765                 if (join < 0) {
4766                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4767                                    "running a GO -> use GO Negotiation");
4768                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4769                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4770                                        "reason=peer-not-running-GO");
4771                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4772                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4773                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4774                                          wpa_s->p2p_go_intent,
4775                                          wpa_s->p2p_connect_freq,
4776                                          wpa_s->p2p_go_vht_center_freq2,
4777                                          wpa_s->p2p_persistent_id,
4778                                          wpa_s->p2p_pd_before_go_neg,
4779                                          wpa_s->p2p_go_ht40,
4780                                          wpa_s->p2p_go_vht,
4781                                          wpa_s->p2p_go_max_oper_chwidth,
4782                                          NULL, 0);
4783                         return;
4784                 }
4785
4786                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4787                            "try to join the group", join ? "" :
4788                            " in older scan");
4789                 if (!join) {
4790                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4791                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4792                         wpa_s->p2p_fallback_to_go_neg = 1;
4793                 }
4794         }
4795
4796         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4797                                  wpa_s->pending_join_iface_addr);
4798         if (freq < 0 &&
4799             p2p_get_interface_addr(wpa_s->global->p2p,
4800                                    wpa_s->pending_join_dev_addr,
4801                                    iface_addr) == 0 &&
4802             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4803             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4804                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4805                            "address for join from " MACSTR " to " MACSTR
4806                            " based on newly discovered P2P peer entry",
4807                            MAC2STR(wpa_s->pending_join_iface_addr),
4808                            MAC2STR(iface_addr));
4809                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4810                           ETH_ALEN);
4811
4812                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4813                                          wpa_s->pending_join_iface_addr);
4814         }
4815         if (freq >= 0) {
4816                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4817                            "from P2P peer table: %d MHz", freq);
4818         }
4819         if (wpa_s->p2p_join_ssid_len) {
4820                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4821                            MACSTR " and SSID %s",
4822                            MAC2STR(wpa_s->pending_join_iface_addr),
4823                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4824                                         wpa_s->p2p_join_ssid_len));
4825                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4826                                   wpa_s->p2p_join_ssid,
4827                                   wpa_s->p2p_join_ssid_len);
4828         } else if (!bss) {
4829                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4830                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4831                 bss = wpa_bss_get_bssid_latest(wpa_s,
4832                                                wpa_s->pending_join_iface_addr);
4833         }
4834         if (bss) {
4835                 u8 dev_addr[ETH_ALEN];
4836
4837                 freq = bss->freq;
4838                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4839                            "from BSS table: %d MHz (SSID %s)", freq,
4840                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4841                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4842                                        dev_addr) == 0 &&
4843                     os_memcmp(wpa_s->pending_join_dev_addr,
4844                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4845                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4846                               ETH_ALEN) != 0) {
4847                         wpa_printf(MSG_DEBUG,
4848                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4849                                    MAC2STR(dev_addr),
4850                                    MAC2STR(wpa_s->pending_join_dev_addr));
4851                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4852                                   ETH_ALEN);
4853                 }
4854         }
4855         if (freq > 0) {
4856                 u16 method;
4857
4858                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4859                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4860                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4861                                        "reason=FREQ_CONFLICT");
4862                         wpas_notify_p2p_group_formation_failure(
4863                                 wpa_s, "FREQ_CONFLICT");
4864                         return;
4865                 }
4866
4867                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4868                            "prior to joining an existing group (GO " MACSTR
4869                            " freq=%u MHz)",
4870                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4871                 wpa_s->pending_pd_before_join = 1;
4872
4873                 switch (wpa_s->pending_join_wps_method) {
4874                 case WPS_PIN_DISPLAY:
4875                         method = WPS_CONFIG_KEYPAD;
4876                         break;
4877                 case WPS_PIN_KEYPAD:
4878                         method = WPS_CONFIG_DISPLAY;
4879                         break;
4880                 case WPS_PBC:
4881                         method = WPS_CONFIG_PUSHBUTTON;
4882                         break;
4883                 case WPS_P2PS:
4884                         method = WPS_CONFIG_P2PS;
4885                         break;
4886                 default:
4887                         method = 0;
4888                         break;
4889                 }
4890
4891                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4892                                                wpa_s->pending_join_dev_addr) ==
4893                      method)) {
4894                         /*
4895                          * We have already performed provision discovery for
4896                          * joining the group. Proceed directly to join
4897                          * operation without duplicated provision discovery. */
4898                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4899                                    "with " MACSTR " already done - proceed to "
4900                                    "join",
4901                                    MAC2STR(wpa_s->pending_join_dev_addr));
4902                         wpa_s->pending_pd_before_join = 0;
4903                         goto start;
4904                 }
4905
4906                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4907                                       wpa_s->pending_join_dev_addr,
4908                                       NULL, method, 1,
4909                                       freq, wpa_s->user_initiated_pd) < 0) {
4910                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4911                                    "Discovery Request before joining an "
4912                                    "existing group");
4913                         wpa_s->pending_pd_before_join = 0;
4914                         goto start;
4915                 }
4916                 return;
4917         }
4918
4919         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4920         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4921         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4922         wpas_p2p_check_join_scan_limit(wpa_s);
4923         return;
4924
4925 start:
4926         /* Start join operation immediately */
4927         wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid,
4928                             wpa_s->p2p_join_ssid_len);
4929 }
4930
4931
4932 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4933                                    const u8 *ssid, size_t ssid_len)
4934 {
4935         int ret;
4936         struct wpa_driver_scan_params params;
4937         struct wpabuf *wps_ie, *ies;
4938         size_t ielen;
4939         int freqs[2] = { 0, 0 };
4940         unsigned int bands;
4941
4942         os_memset(&params, 0, sizeof(params));
4943
4944         /* P2P Wildcard SSID */
4945         params.num_ssids = 1;
4946         if (ssid && ssid_len) {
4947                 params.ssids[0].ssid = ssid;
4948                 params.ssids[0].ssid_len = ssid_len;
4949                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4950                 wpa_s->p2p_join_ssid_len = ssid_len;
4951         } else {
4952                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4953                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4954                 wpa_s->p2p_join_ssid_len = 0;
4955         }
4956
4957         wpa_s->wps->dev.p2p = 1;
4958         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4959                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4960                                         NULL);
4961         if (wps_ie == NULL) {
4962                 wpas_p2p_scan_res_join(wpa_s, NULL);
4963                 return;
4964         }
4965
4966         if (!freq) {
4967                 int oper_freq;
4968                 /*
4969                  * If freq is not provided, check the operating freq of the GO
4970                  * and use a single channel scan on if possible.
4971                  */
4972                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4973                                               wpa_s->pending_join_iface_addr);
4974                 if (oper_freq > 0)
4975                         freq = oper_freq;
4976         }
4977         if (freq > 0) {
4978                 freqs[0] = freq;
4979                 params.freqs = freqs;
4980         }
4981
4982         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4983         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4984         if (ies == NULL) {
4985                 wpabuf_free(wps_ie);
4986                 wpas_p2p_scan_res_join(wpa_s, NULL);
4987                 return;
4988         }
4989         wpabuf_put_buf(ies, wps_ie);
4990         wpabuf_free(wps_ie);
4991
4992         bands = wpas_get_bands(wpa_s, freqs);
4993         p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
4994
4995         params.p2p_probe = 1;
4996         params.extra_ies = wpabuf_head(ies);
4997         params.extra_ies_len = wpabuf_len(ies);
4998
4999         /*
5000          * Run a scan to update BSS table and start Provision Discovery once
5001          * the new scan results become available.
5002          */
5003         ret = wpa_drv_scan(wpa_s, &params);
5004         if (!ret) {
5005                 os_get_reltime(&wpa_s->scan_trigger_time);
5006                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
5007                 wpa_s->own_scan_requested = 1;
5008         }
5009
5010         wpabuf_free(ies);
5011
5012         if (ret) {
5013                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5014                            "try again later");
5015                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5016                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5017                 wpas_p2p_check_join_scan_limit(wpa_s);
5018         }
5019 }
5020
5021
5022 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5023 {
5024         struct wpa_supplicant *wpa_s = eloop_ctx;
5025         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5026 }
5027
5028
5029 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5030                          const u8 *dev_addr, enum p2p_wps_method wps_method,
5031                          int auto_join, int op_freq,
5032                          const u8 *ssid, size_t ssid_len)
5033 {
5034         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5035                    MACSTR " dev " MACSTR " op_freq=%d)%s",
5036                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5037                    auto_join ? " (auto_join)" : "");
5038         if (ssid && ssid_len) {
5039                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5040                            wpa_ssid_txt(ssid, ssid_len));
5041         }
5042
5043         wpa_s->p2p_auto_pd = 0;
5044         wpa_s->p2p_auto_join = !!auto_join;
5045         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5046         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5047         wpa_s->pending_join_wps_method = wps_method;
5048
5049         /* Make sure we are not running find during connection establishment */
5050         wpas_p2p_stop_find(wpa_s);
5051
5052         wpa_s->p2p_join_scan_count = 0;
5053         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5054         return 0;
5055 }
5056
5057
5058 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5059                                const u8 *ssid, size_t ssid_len)
5060 {
5061         struct wpa_supplicant *group;
5062         struct p2p_go_neg_results res;
5063         struct wpa_bss *bss;
5064
5065         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5066         if (group == NULL)
5067                 return -1;
5068         if (group != wpa_s) {
5069                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5070                           sizeof(group->p2p_pin));
5071                 group->p2p_wps_method = wpa_s->p2p_wps_method;
5072         } else {
5073                 /*
5074                  * Need to mark the current interface for p2p_group_formation
5075                  * when a separate group interface is not used. This is needed
5076                  * to allow p2p_cancel stop a pending p2p_connect-join.
5077                  * wpas_p2p_init_group_interface() addresses this for the case
5078                  * where a separate group interface is used.
5079                  */
5080                 wpa_s->global->p2p_group_formation = wpa_s;
5081         }
5082
5083         group->p2p_in_provisioning = 1;
5084         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5085
5086         os_memset(&res, 0, sizeof(res));
5087         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5088         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5089                   ETH_ALEN);
5090         res.wps_method = wpa_s->pending_join_wps_method;
5091         if (freq && ssid && ssid_len) {
5092                 res.freq = freq;
5093                 res.ssid_len = ssid_len;
5094                 os_memcpy(res.ssid, ssid, ssid_len);
5095         } else {
5096                 if (ssid && ssid_len) {
5097                         bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
5098                                           ssid, ssid_len);
5099                 } else {
5100                         bss = wpa_bss_get_bssid_latest(
5101                                 wpa_s, wpa_s->pending_join_iface_addr);
5102                 }
5103                 if (bss) {
5104                         res.freq = bss->freq;
5105                         res.ssid_len = bss->ssid_len;
5106                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5107                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5108                                    bss->freq,
5109                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
5110                 } else if (ssid && ssid_len) {
5111                         res.ssid_len = ssid_len;
5112                         os_memcpy(res.ssid, ssid, ssid_len);
5113                         wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)",
5114                                    wpa_ssid_txt(ssid, ssid_len));
5115                 }
5116         }
5117
5118         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5119                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5120                            "starting client");
5121                 wpa_drv_cancel_remain_on_channel(wpa_s);
5122                 wpa_s->off_channel_freq = 0;
5123                 wpa_s->roc_waiting_drv_freq = 0;
5124         }
5125         wpas_start_wps_enrollee(group, &res);
5126
5127         /*
5128          * Allow a longer timeout for join-a-running-group than normal 15
5129          * second group formation timeout since the GO may not have authorized
5130          * our connection yet.
5131          */
5132         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5133         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5134                                wpa_s, NULL);
5135
5136         return 0;
5137 }
5138
5139
5140 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5141                                 int *force_freq, int *pref_freq, int go,
5142                                 unsigned int *pref_freq_list,
5143                                 unsigned int *num_pref_freq)
5144 {
5145         struct wpa_used_freq_data *freqs;
5146         int res, best_freq, num_unused;
5147         unsigned int freq_in_use = 0, num, i, max_pref_freq;
5148
5149         max_pref_freq = *num_pref_freq;
5150         *num_pref_freq = 0;
5151
5152         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5153                           sizeof(struct wpa_used_freq_data));
5154         if (!freqs)
5155                 return -1;
5156
5157         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5158                                         wpa_s->num_multichan_concurrent);
5159
5160         /*
5161          * It is possible that the total number of used frequencies is bigger
5162          * than the number of frequencies used for P2P, so get the system wide
5163          * number of unused frequencies.
5164          */
5165         num_unused = wpas_p2p_num_unused_channels(wpa_s);
5166
5167         wpa_printf(MSG_DEBUG,
5168                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5169                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
5170
5171         if (freq > 0) {
5172                 int ret;
5173                 if (go)
5174                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5175                 else
5176                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5177                 if (!ret) {
5178                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5179                             ieee80211_is_dfs(freq)) {
5180                                 /*
5181                                  * If freq is a DFS channel and DFS is offloaded
5182                                  * to the driver, allow P2P GO to use it.
5183                                  */
5184                                 wpa_printf(MSG_DEBUG,
5185                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5186                                            freq);
5187                         } else {
5188                                 wpa_printf(MSG_DEBUG,
5189                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5190                                            freq);
5191                                 res = -3;
5192                                 goto exit_free;
5193                         }
5194                 }
5195
5196                 for (i = 0; i < num; i++) {
5197                         if (freqs[i].freq == freq)
5198                                 freq_in_use = 1;
5199                 }
5200
5201                 if (num_unused <= 0 && !freq_in_use) {
5202                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5203                                    freq);
5204                         res = -2;
5205                         goto exit_free;
5206                 }
5207                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5208                            "requested channel (%u MHz)", freq);
5209                 *force_freq = freq;
5210                 goto exit_ok;
5211         }
5212
5213         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5214
5215         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5216                 enum wpa_driver_if_type iface_type;
5217
5218                 if (go)
5219                         iface_type = WPA_IF_P2P_GO;
5220                 else
5221                         iface_type = WPA_IF_P2P_CLIENT;
5222
5223                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5224                            best_freq, go);
5225
5226                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5227                                                  &max_pref_freq,
5228                                                  pref_freq_list);
5229                 if (!res && max_pref_freq > 0) {
5230                         *num_pref_freq = max_pref_freq;
5231                         i = 0;
5232                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5233                                                         pref_freq_list[i]) &&
5234                                i < *num_pref_freq) {
5235                                 wpa_printf(MSG_DEBUG,
5236                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5237                                            i, pref_freq_list[i]);
5238                                 i++;
5239                         }
5240                         if (i != *num_pref_freq) {
5241                                 best_freq = pref_freq_list[i];
5242                                 wpa_printf(MSG_DEBUG,
5243                                            "P2P: Using preferred_freq_list[%d]=%d",
5244                                            i, best_freq);
5245                         } else {
5246                                 wpa_printf(MSG_DEBUG,
5247                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5248                                 *num_pref_freq = 0;
5249                         }
5250                 } else {
5251                         wpa_printf(MSG_DEBUG,
5252                                    "P2P: No preferred frequency list available");
5253                 }
5254         }
5255
5256         /* We have a candidate frequency to use */
5257         if (best_freq > 0) {
5258                 if (*pref_freq == 0 && num_unused > 0) {
5259                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5260                                    best_freq);
5261                         *pref_freq = best_freq;
5262                 } else {
5263                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5264                                    best_freq);
5265                         *force_freq = best_freq;
5266                 }
5267         } else if (num_unused > 0) {
5268                 wpa_printf(MSG_DEBUG,
5269                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5270                 *force_freq = 0;
5271         } else {
5272                 wpa_printf(MSG_DEBUG,
5273                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5274                 res = -2;
5275                 goto exit_free;
5276         }
5277
5278 exit_ok:
5279         res = 0;
5280 exit_free:
5281         os_free(freqs);
5282         return res;
5283 }
5284
5285
5286 /**
5287  * wpas_p2p_connect - Request P2P Group Formation to be started
5288  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5289  * @peer_addr: Address of the peer P2P Device
5290  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5291  * @persistent_group: Whether to create a persistent group
5292  * @auto_join: Whether to select join vs. GO Negotiation automatically
5293  * @join: Whether to join an existing group (as a client) instead of starting
5294  *      Group Owner negotiation; @peer_addr is BSSID in that case
5295  * @auth: Whether to only authorize the connection instead of doing that and
5296  *      initiating Group Owner negotiation
5297  * @go_intent: GO Intent or -1 to use default
5298  * @freq: Frequency for the group or 0 for auto-selection
5299  * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5300  * @persistent_id: Persistent group credentials to use for forcing GO
5301  *      parameters or -1 to generate new values (SSID/passphrase)
5302  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5303  *      interoperability workaround when initiating group formation
5304  * @ht40: Start GO with 40 MHz channel width
5305  * @vht:  Start GO with VHT support
5306  * @vht_chwidth: Channel width supported by GO operating with VHT support
5307  *      (VHT_CHANWIDTH_*).
5308  * @group_ssid: Specific Group SSID for join or %NULL if not set
5309  * @group_ssid_len: Length of @group_ssid in octets
5310  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5311  *      failure, -2 on failure due to channel not currently available,
5312  *      -3 if forced channel is not supported
5313  */
5314 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5315                      const char *pin, enum p2p_wps_method wps_method,
5316                      int persistent_group, int auto_join, int join, int auth,
5317                      int go_intent, int freq, unsigned int vht_center_freq2,
5318                      int persistent_id, int pd, int ht40, int vht,
5319                      unsigned int vht_chwidth, const u8 *group_ssid,
5320                      size_t group_ssid_len)
5321 {
5322         int force_freq = 0, pref_freq = 0;
5323         int ret = 0, res;
5324         enum wpa_driver_if_type iftype;
5325         const u8 *if_addr;
5326         struct wpa_ssid *ssid = NULL;
5327         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5328
5329         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5330                 return -1;
5331
5332         if (persistent_id >= 0) {
5333                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5334                 if (ssid == NULL || ssid->disabled != 2 ||
5335                     ssid->mode != WPAS_MODE_P2P_GO)
5336                         return -1;
5337         }
5338
5339         os_free(wpa_s->global->add_psk);
5340         wpa_s->global->add_psk = NULL;
5341
5342         wpa_s->global->p2p_fail_on_wps_complete = 0;
5343         wpa_s->global->pending_p2ps_group = 0;
5344         wpa_s->global->pending_p2ps_group_freq = 0;
5345         wpa_s->p2ps_method_config_any = 0;
5346
5347         if (go_intent < 0)
5348                 go_intent = wpa_s->conf->p2p_go_intent;
5349
5350         if (!auth)
5351                 wpa_s->p2p_long_listen = 0;
5352
5353         wpa_s->p2p_wps_method = wps_method;
5354         wpa_s->p2p_persistent_group = !!persistent_group;
5355         wpa_s->p2p_persistent_id = persistent_id;
5356         wpa_s->p2p_go_intent = go_intent;
5357         wpa_s->p2p_connect_freq = freq;
5358         wpa_s->p2p_fallback_to_go_neg = 0;
5359         wpa_s->p2p_pd_before_go_neg = !!pd;
5360         wpa_s->p2p_go_ht40 = !!ht40;
5361         wpa_s->p2p_go_vht = !!vht;
5362         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5363         wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5364
5365         if (pin)
5366                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5367         else if (wps_method == WPS_PIN_DISPLAY) {
5368                 if (wps_generate_pin((unsigned int *) &ret) < 0)
5369                         return -1;
5370                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5371                                   "%08d", ret);
5372                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5373                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5374                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5375                            wpa_s->p2p_pin);
5376         } else
5377                 wpa_s->p2p_pin[0] = '\0';
5378
5379         if (join || auto_join) {
5380                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5381                 if (auth) {
5382                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5383                                    "connect a running group from " MACSTR,
5384                                    MAC2STR(peer_addr));
5385                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5386                         return ret;
5387                 }
5388                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5389                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5390                                            iface_addr) < 0) {
5391                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5392                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5393                                          dev_addr);
5394                 }
5395                 if (auto_join) {
5396                         os_get_reltime(&wpa_s->p2p_auto_started);
5397                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5398                                    "%ld.%06ld",
5399                                    wpa_s->p2p_auto_started.sec,
5400                                    wpa_s->p2p_auto_started.usec);
5401                 }
5402                 wpa_s->user_initiated_pd = 1;
5403                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5404                                   auto_join, freq,
5405                                   group_ssid, group_ssid_len) < 0)
5406                         return -1;
5407                 return ret;
5408         }
5409
5410         size = P2P_MAX_PREF_CHANNELS;
5411         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5412                                    go_intent == 15, pref_freq_list, &size);
5413         if (res)
5414                 return res;
5415         wpas_p2p_set_own_freq_preference(wpa_s,
5416                                          force_freq ? force_freq : pref_freq);
5417
5418         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5419
5420         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5421
5422         if (wpa_s->create_p2p_iface) {
5423                 /* Prepare to add a new interface for the group */
5424                 iftype = WPA_IF_P2P_GROUP;
5425                 if (go_intent == 15)
5426                         iftype = WPA_IF_P2P_GO;
5427                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5428                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5429                                    "interface for the group");
5430                         return -1;
5431                 }
5432
5433                 if_addr = wpa_s->pending_interface_addr;
5434         } else {
5435                 if (wpa_s->p2p_mgmt)
5436                         if_addr = wpa_s->parent->own_addr;
5437                 else
5438                         if_addr = wpa_s->own_addr;
5439                 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5440         }
5441
5442         if (auth) {
5443                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5444                                          go_intent, if_addr,
5445                                          force_freq, persistent_group, ssid,
5446                                          pref_freq) < 0)
5447                         return -1;
5448                 return ret;
5449         }
5450
5451         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5452                                   go_intent, if_addr, force_freq,
5453                                   persistent_group, ssid, pref_freq) < 0) {
5454                 if (wpa_s->create_p2p_iface)
5455                         wpas_p2p_remove_pending_group_interface(wpa_s);
5456                 return -1;
5457         }
5458         return ret;
5459 }
5460
5461
5462 /**
5463  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5464  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5465  * @freq: Frequency of the channel in MHz
5466  * @duration: Duration of the stay on the channel in milliseconds
5467  *
5468  * This callback is called when the driver indicates that it has started the
5469  * requested remain-on-channel duration.
5470  */
5471 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5472                                    unsigned int freq, unsigned int duration)
5473 {
5474         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5475                 return;
5476         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)",
5477                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5478                    wpa_s->roc_waiting_drv_freq, freq, duration);
5479         if (wpa_s->off_channel_freq &&
5480             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5481                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5482                               wpa_s->pending_listen_duration);
5483                 wpa_s->pending_listen_freq = 0;
5484         } else {
5485                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5486                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5487                            freq, duration);
5488         }
5489 }
5490
5491
5492 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5493 {
5494         /* Limit maximum Listen state time based on driver limitation. */
5495         if (timeout > wpa_s->max_remain_on_chan)
5496                 timeout = wpa_s->max_remain_on_chan;
5497
5498         return p2p_listen(wpa_s->global->p2p, timeout);
5499 }
5500
5501
5502 /**
5503  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5504  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5505  * @freq: Frequency of the channel in MHz
5506  *
5507  * This callback is called when the driver indicates that a remain-on-channel
5508  * operation has been completed, i.e., the duration on the requested channel
5509  * has timed out.
5510  */
5511 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5512                                           unsigned int freq)
5513 {
5514         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5515                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5516                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5517         wpas_p2p_listen_work_done(wpa_s);
5518         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5519                 return;
5520         if (wpa_s->p2p_long_listen > 0)
5521                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5522         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5523                 return; /* P2P module started a new operation */
5524         if (offchannel_pending_action_tx(wpa_s))
5525                 return;
5526         if (wpa_s->p2p_long_listen > 0) {
5527                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5528                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5529         } else {
5530                 /*
5531                  * When listen duration is over, stop listen & update p2p_state
5532                  * to IDLE.
5533                  */
5534                 p2p_stop_listen(wpa_s->global->p2p);
5535         }
5536 }
5537
5538
5539 /**
5540  * wpas_p2p_group_remove - Remove a P2P group
5541  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5542  * @ifname: Network interface name of the group interface or "*" to remove all
5543  *      groups
5544  * Returns: 0 on success, -1 on failure
5545  *
5546  * This function is used to remove a P2P group. This can be used to disconnect
5547  * from a group in which the local end is a P2P Client or to end a P2P Group in
5548  * case the local end is the Group Owner. If a virtual network interface was
5549  * created for this group, that interface will be removed. Otherwise, only the
5550  * configured P2P group network will be removed from the interface.
5551  */
5552 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5553 {
5554         struct wpa_global *global = wpa_s->global;
5555         struct wpa_supplicant *calling_wpa_s = wpa_s;
5556
5557         if (os_strcmp(ifname, "*") == 0) {
5558                 struct wpa_supplicant *prev;
5559                 wpa_s = global->ifaces;
5560                 while (wpa_s) {
5561                         prev = wpa_s;
5562                         wpa_s = wpa_s->next;
5563                         if (prev->p2p_group_interface !=
5564                             NOT_P2P_GROUP_INTERFACE ||
5565                             (prev->current_ssid &&
5566                              prev->current_ssid->p2p_group))
5567                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5568                 }
5569                 return 0;
5570         }
5571
5572         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5573                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5574                         break;
5575         }
5576
5577         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5578 }
5579
5580
5581 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5582 {
5583         unsigned int r;
5584
5585         if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5586                 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5587                 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5588                 int res;
5589
5590                 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5591                                                  &size, pref_freq_list);
5592                 if (!res && size > 0) {
5593                         i = 0;
5594                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5595                                                         pref_freq_list[i]) &&
5596                                i < size) {
5597                                 wpa_printf(MSG_DEBUG,
5598                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5599                                            i, pref_freq_list[i]);
5600                                 i++;
5601                         }
5602                         if (i != size) {
5603                                 freq = pref_freq_list[i];
5604                                 wpa_printf(MSG_DEBUG,
5605                                            "P2P: Using preferred_freq_list[%d]=%d",
5606                                            i, freq);
5607                         } else {
5608                                 wpa_printf(MSG_DEBUG,
5609                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5610                         }
5611                 } else {
5612                         wpa_printf(MSG_DEBUG,
5613                                    "P2P: No preferred frequency list available");
5614                 }
5615         }
5616
5617         if (freq == 2) {
5618                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5619                            "band");
5620                 if (wpa_s->best_24_freq > 0 &&
5621                     p2p_supported_freq_go(wpa_s->global->p2p,
5622                                           wpa_s->best_24_freq)) {
5623                         freq = wpa_s->best_24_freq;
5624                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5625                                    "channel: %d MHz", freq);
5626                 } else {
5627                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5628                                 return -1;
5629                         freq = 2412 + (r % 3) * 25;
5630                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5631                                    "channel: %d MHz", freq);
5632                 }
5633         }
5634
5635         if (freq == 5) {
5636                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5637                            "band");
5638                 if (wpa_s->best_5_freq > 0 &&
5639                     p2p_supported_freq_go(wpa_s->global->p2p,
5640                                        wpa_s->best_5_freq)) {
5641                         freq = wpa_s->best_5_freq;
5642                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5643                                    "channel: %d MHz", freq);
5644                 } else {
5645                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5646                                 return -1;
5647                         freq = 5180 + (r % 4) * 20;
5648                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5649                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5650                                            "5 GHz channel for P2P group");
5651                                 return -1;
5652                         }
5653                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5654                                    "channel: %d MHz", freq);
5655                 }
5656         }
5657
5658         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5659                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5660                     ieee80211_is_dfs(freq)) {
5661                         /*
5662                          * If freq is a DFS channel and DFS is offloaded to the
5663                          * driver, allow P2P GO to use it.
5664                          */
5665                         wpa_printf(MSG_DEBUG, "P2P: "
5666                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5667                                    __func__, freq);
5668                         return freq;
5669                 }
5670                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5671                            "(%u MHz) is not supported for P2P uses",
5672                            freq);
5673                 return -1;
5674         }
5675
5676         return freq;
5677 }
5678
5679
5680 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5681                                       const struct p2p_channels *channels,
5682                                       int freq)
5683 {
5684         if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5685             p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5686             freq_included(wpa_s, channels, freq))
5687                 return 1;
5688         return 0;
5689 }
5690
5691
5692 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5693                                             struct p2p_go_neg_results *params,
5694                                             const struct p2p_channels *channels)
5695 {
5696         unsigned int i, r;
5697
5698         /* first try some random selection of the social channels */
5699         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5700                 return;
5701
5702         for (i = 0; i < 3; i++) {
5703                 params->freq = 2412 + ((r + i) % 3) * 25;
5704                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5705                         goto out;
5706         }
5707
5708         /* try all other channels in operating class 81 */
5709         for (i = 0; i < 11; i++) {
5710                 params->freq = 2412 + i * 5;
5711
5712                 /* skip social channels; covered in the previous loop */
5713                 if (params->freq == 2412 ||
5714                     params->freq == 2437 ||
5715                     params->freq == 2462)
5716                         continue;
5717
5718                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5719                         goto out;
5720         }
5721
5722         /* try all channels in operating class 115 */
5723         for (i = 0; i < 4; i++) {
5724                 params->freq = 5180 + i * 20;
5725                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5726                     freq_included(wpa_s, channels, params->freq) &&
5727                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5728                         goto out;
5729         }
5730
5731         /* try all channels in operating class 124 */
5732         for (i = 0; i < 4; i++) {
5733                 params->freq = 5745 + i * 20;
5734                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5735                     freq_included(wpa_s, channels, params->freq) &&
5736                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5737                         goto out;
5738         }
5739
5740         /* try social channel class 180 channel 2 */
5741         params->freq = 58320 + 1 * 2160;
5742         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5743             freq_included(wpa_s, channels, params->freq) &&
5744             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5745                 goto out;
5746
5747         /* try all channels in reg. class 180 */
5748         for (i = 0; i < 4; i++) {
5749                 params->freq = 58320 + i * 2160;
5750                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5751                     freq_included(wpa_s, channels, params->freq) &&
5752                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5753                         goto out;
5754         }
5755
5756         params->freq = 0;
5757         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5758         return;
5759 out:
5760         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5761                    params->freq);
5762 }
5763
5764
5765 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5766                                    struct p2p_go_neg_results *params,
5767                                    int freq, int vht_center_freq2, int ht40,
5768                                    int vht, int max_oper_chwidth,
5769                                    const struct p2p_channels *channels)
5770 {
5771         struct wpa_used_freq_data *freqs;
5772         unsigned int cand;
5773         unsigned int num, i;
5774         int ignore_no_freqs = 0;
5775         int unused_channels = wpas_p2p_num_unused_channels(wpa_s) > 0;
5776
5777         os_memset(params, 0, sizeof(*params));
5778         params->role_go = 1;
5779         params->ht40 = ht40;
5780         params->vht = vht;
5781         params->max_oper_chwidth = max_oper_chwidth;
5782         params->vht_center_freq2 = vht_center_freq2;
5783
5784         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5785                           sizeof(struct wpa_used_freq_data));
5786         if (!freqs)
5787                 return -1;
5788
5789         num = get_shared_radio_freqs_data(wpa_s, freqs,
5790                                           wpa_s->num_multichan_concurrent);
5791
5792         if (wpa_s->current_ssid &&
5793             wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5794             wpa_s->wpa_state == WPA_COMPLETED) {
5795                 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5796                            __func__);
5797
5798                 /*
5799                  * If the frequency selection is done for an active P2P GO that
5800                  * is not sharing a frequency, allow to select a new frequency
5801                  * even if there are no unused frequencies as we are about to
5802                  * move the P2P GO so its frequency can be re-used.
5803                  */
5804                 for (i = 0; i < num; i++) {
5805                         if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5806                             freqs[i].flags == 0) {
5807                                 ignore_no_freqs = 1;
5808                                 break;
5809                         }
5810                 }
5811         }
5812
5813         /* try using the forced freq */
5814         if (freq) {
5815                 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) {
5816                         wpa_printf(MSG_DEBUG,
5817                                    "P2P: Forced GO freq %d MHz not accepted",
5818                                    freq);
5819                         goto fail;
5820                 }
5821
5822                 for (i = 0; i < num; i++) {
5823                         if (freqs[i].freq == freq) {
5824                                 wpa_printf(MSG_DEBUG,
5825                                            "P2P: forced freq (%d MHz) is also shared",
5826                                            freq);
5827                                 params->freq = freq;
5828                                 goto success;
5829                         }
5830                 }
5831
5832                 if (!ignore_no_freqs && !unused_channels) {
5833                         wpa_printf(MSG_DEBUG,
5834                                    "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5835                                    freq);
5836                         goto fail;
5837                 }
5838
5839                 wpa_printf(MSG_DEBUG,
5840                            "P2P: force GO freq (%d MHz) on a free channel",
5841                            freq);
5842                 params->freq = freq;
5843                 goto success;
5844         }
5845
5846         /* consider using one of the shared frequencies */
5847         if (num &&
5848             (!wpa_s->conf->p2p_ignore_shared_freq || !unused_channels)) {
5849                 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5850                 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5851                         wpa_printf(MSG_DEBUG,
5852                                    "P2P: Use shared freq (%d MHz) for GO",
5853                                    cand);
5854                         params->freq = cand;
5855                         goto success;
5856                 }
5857
5858                 /* try using one of the shared freqs */
5859                 for (i = 0; i < num; i++) {
5860                         if (wpas_p2p_supported_freq_go(wpa_s, channels,
5861                                                        freqs[i].freq)) {
5862                                 wpa_printf(MSG_DEBUG,
5863                                            "P2P: Use shared freq (%d MHz) for GO",
5864                                            freqs[i].freq);
5865                                 params->freq = freqs[i].freq;
5866                                 goto success;
5867                         }
5868                 }
5869         }
5870
5871         if (!ignore_no_freqs && !unused_channels) {
5872                 wpa_printf(MSG_DEBUG,
5873                            "P2P: Cannot force GO on any of the channels we are already using");
5874                 goto fail;
5875         }
5876
5877         /* try using the setting from the configuration file */
5878         if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5879             wpa_s->conf->p2p_oper_channel >= 1 &&
5880             wpa_s->conf->p2p_oper_channel <= 11 &&
5881             wpas_p2p_supported_freq_go(
5882                     wpa_s, channels,
5883                     2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5884                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5885                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5886                            "frequency %d MHz", params->freq);
5887                 goto success;
5888         }
5889
5890         if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5891              wpa_s->conf->p2p_oper_reg_class == 116 ||
5892              wpa_s->conf->p2p_oper_reg_class == 117 ||
5893              wpa_s->conf->p2p_oper_reg_class == 124 ||
5894              wpa_s->conf->p2p_oper_reg_class == 125 ||
5895              wpa_s->conf->p2p_oper_reg_class == 126 ||
5896              wpa_s->conf->p2p_oper_reg_class == 127) &&
5897             wpas_p2p_supported_freq_go(wpa_s, channels,
5898                                        5000 +
5899                                        5 * wpa_s->conf->p2p_oper_channel)) {
5900                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5901                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5902                            "frequency %d MHz", params->freq);
5903                 goto success;
5904         }
5905
5906         /* Try using best channels */
5907         if (wpa_s->conf->p2p_oper_channel == 0 &&
5908             wpa_s->best_overall_freq > 0 &&
5909             wpas_p2p_supported_freq_go(wpa_s, channels,
5910                                        wpa_s->best_overall_freq)) {
5911                 params->freq = wpa_s->best_overall_freq;
5912                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5913                            "channel %d MHz", params->freq);
5914                 goto success;
5915         }
5916
5917         if (wpa_s->conf->p2p_oper_channel == 0 &&
5918             wpa_s->best_24_freq > 0 &&
5919             wpas_p2p_supported_freq_go(wpa_s, channels,
5920                                        wpa_s->best_24_freq)) {
5921                 params->freq = wpa_s->best_24_freq;
5922                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5923                            "channel %d MHz", params->freq);
5924                 goto success;
5925         }
5926
5927         if (wpa_s->conf->p2p_oper_channel == 0 &&
5928             wpa_s->best_5_freq > 0 &&
5929             wpas_p2p_supported_freq_go(wpa_s, channels,
5930                                        wpa_s->best_5_freq)) {
5931                 params->freq = wpa_s->best_5_freq;
5932                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5933                            "channel %d MHz", params->freq);
5934                 goto success;
5935         }
5936
5937         /* try using preferred channels */
5938         cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
5939         if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5940                 params->freq = cand;
5941                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5942                            "channels", params->freq);
5943                 goto success;
5944         }
5945
5946         /* Try using one of the group common freqs */
5947         if (wpa_s->p2p_group_common_freqs) {
5948                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
5949                         cand = wpa_s->p2p_group_common_freqs[i];
5950                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5951                                 params->freq = cand;
5952                                 wpa_printf(MSG_DEBUG,
5953                                            "P2P: Use freq %d MHz common with the peer",
5954                                            params->freq);
5955                                 goto success;
5956                         }
5957                 }
5958         }
5959
5960         /* no preference, select some channel */
5961         wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
5962
5963         if (params->freq == 0) {
5964                 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
5965                 goto fail;
5966         }
5967
5968 success:
5969         os_free(freqs);
5970         return 0;
5971 fail:
5972         os_free(freqs);
5973         return -1;
5974 }
5975
5976
5977 static struct wpa_supplicant *
5978 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5979                          int go)
5980 {
5981         struct wpa_supplicant *group_wpa_s;
5982
5983         if (!wpas_p2p_create_iface(wpa_s)) {
5984                 if (wpa_s->p2p_mgmt) {
5985                         /*
5986                          * We may be called on the p2p_dev interface which
5987                          * cannot be used for group operations, so always use
5988                          * the primary interface.
5989                          */
5990                         wpa_s->parent->p2pdev = wpa_s;
5991                         wpa_s = wpa_s->parent;
5992                 }
5993                 wpa_dbg(wpa_s, MSG_DEBUG,
5994                         "P2P: Use primary interface for group operations");
5995                 wpa_s->p2p_first_connection_timeout = 0;
5996                 if (wpa_s != wpa_s->p2pdev)
5997                         wpas_p2p_clone_config_dh(wpa_s, wpa_s->p2pdev);
5998                 return wpa_s;
5999         }
6000
6001         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
6002                                          WPA_IF_P2P_CLIENT) < 0) {
6003                 wpa_msg_global(wpa_s, MSG_ERROR,
6004                                "P2P: Failed to add group interface");
6005                 return NULL;
6006         }
6007         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
6008         if (group_wpa_s == NULL) {
6009                 wpa_msg_global(wpa_s, MSG_ERROR,
6010                                "P2P: Failed to initialize group interface");
6011                 wpas_p2p_remove_pending_group_interface(wpa_s);
6012                 return NULL;
6013         }
6014
6015         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
6016                 group_wpa_s->ifname);
6017         group_wpa_s->p2p_first_connection_timeout = 0;
6018         return group_wpa_s;
6019 }
6020
6021
6022 /**
6023  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
6024  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
6025  * @persistent_group: Whether to create a persistent group
6026  * @freq: Frequency for the group or 0 to indicate no hardcoding
6027  * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80
6028  * @ht40: Start GO with 40 MHz channel width
6029  * @vht:  Start GO with VHT support
6030  * @vht_chwidth: channel bandwidth for GO operating with VHT support
6031  * Returns: 0 on success, -1 on failure
6032  *
6033  * This function creates a new P2P group with the local end as the Group Owner,
6034  * i.e., without using Group Owner Negotiation.
6035  */
6036 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
6037                        int freq, int vht_center_freq2, int ht40, int vht,
6038                        int max_oper_chwidth)
6039 {
6040         struct p2p_go_neg_results params;
6041
6042         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6043                 return -1;
6044
6045         os_free(wpa_s->global->add_psk);
6046         wpa_s->global->add_psk = NULL;
6047
6048         /* Make sure we are not running find during connection establishment */
6049         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6050         wpas_p2p_stop_find_oper(wpa_s);
6051
6052         freq = wpas_p2p_select_go_freq(wpa_s, freq);
6053         if (freq < 0)
6054                 return -1;
6055
6056         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6057                                     ht40, vht, max_oper_chwidth, NULL))
6058                 return -1;
6059         if (params.freq &&
6060             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
6061                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
6062                     ieee80211_is_dfs(params.freq)) {
6063                         /*
6064                          * If freq is a DFS channel and DFS is offloaded to the
6065                          * driver, allow P2P GO to use it.
6066                          */
6067                         wpa_printf(MSG_DEBUG,
6068                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
6069                                 __func__, params.freq);
6070                 } else {
6071                         wpa_printf(MSG_DEBUG,
6072                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
6073                                    params.freq);
6074                         return -1;
6075                 }
6076         }
6077         p2p_go_params(wpa_s->global->p2p, &params);
6078         params.persistent_group = persistent_group;
6079
6080         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6081         if (wpa_s == NULL)
6082                 return -1;
6083         wpas_start_wps_go(wpa_s, &params, 0);
6084
6085         return 0;
6086 }
6087
6088
6089 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6090                                  struct wpa_ssid *params, int addr_allocated,
6091                                  int freq, int force_scan)
6092 {
6093         struct wpa_ssid *ssid;
6094
6095         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6096         if (wpa_s == NULL)
6097                 return -1;
6098         if (force_scan)
6099                 os_get_reltime(&wpa_s->scan_min_time);
6100         wpa_s->p2p_last_4way_hs_fail = NULL;
6101
6102         wpa_supplicant_ap_deinit(wpa_s);
6103
6104         ssid = wpa_config_add_network(wpa_s->conf);
6105         if (ssid == NULL)
6106                 return -1;
6107         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
6108         wpa_config_set_network_defaults(ssid);
6109         ssid->temporary = 1;
6110         ssid->proto = WPA_PROTO_RSN;
6111         ssid->pbss = params->pbss;
6112         ssid->pairwise_cipher = params->pbss ? WPA_CIPHER_GCMP :
6113                 WPA_CIPHER_CCMP;
6114         ssid->group_cipher = params->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP;
6115         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6116         ssid->ssid = os_malloc(params->ssid_len);
6117         if (ssid->ssid == NULL) {
6118                 wpa_config_remove_network(wpa_s->conf, ssid->id);
6119                 return -1;
6120         }
6121         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6122         ssid->ssid_len = params->ssid_len;
6123         ssid->p2p_group = 1;
6124         ssid->export_keys = 1;
6125         if (params->psk_set) {
6126                 os_memcpy(ssid->psk, params->psk, 32);
6127                 ssid->psk_set = 1;
6128         }
6129         if (params->passphrase)
6130                 ssid->passphrase = os_strdup(params->passphrase);
6131
6132         wpa_s->show_group_started = 1;
6133         wpa_s->p2p_in_invitation = 1;
6134         wpa_s->p2p_invite_go_freq = freq;
6135         wpa_s->p2p_go_group_formation_completed = 0;
6136         wpa_s->global->p2p_group_formation = wpa_s;
6137
6138         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6139                              NULL);
6140         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6141                                wpas_p2p_group_formation_timeout,
6142                                wpa_s->p2pdev, NULL);
6143         wpa_supplicant_select_network(wpa_s, ssid);
6144
6145         return 0;
6146 }
6147
6148
6149 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6150                                   struct wpa_ssid *ssid, int addr_allocated,
6151                                   int force_freq, int neg_freq,
6152                                   int vht_center_freq2, int ht40,
6153                                   int vht, int max_oper_chwidth,
6154                                   const struct p2p_channels *channels,
6155                                   int connection_timeout, int force_scan)
6156 {
6157         struct p2p_go_neg_results params;
6158         int go = 0, freq;
6159
6160         if (ssid->disabled != 2 || ssid->ssid == NULL)
6161                 return -1;
6162
6163         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6164             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6165                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6166                            "already running");
6167                 if (go == 0 &&
6168                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6169                                          wpa_s->p2pdev, NULL)) {
6170                         /*
6171                          * This can happen if Invitation Response frame was lost
6172                          * and the peer (GO of a persistent group) tries to
6173                          * invite us again. Reschedule the timeout to avoid
6174                          * terminating the wait for the connection too early
6175                          * since we now know that the peer is still trying to
6176                          * invite us instead of having already started the GO.
6177                          */
6178                         wpa_printf(MSG_DEBUG,
6179                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6180                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6181                                                wpas_p2p_group_formation_timeout,
6182                                                wpa_s->p2pdev, NULL);
6183                 }
6184                 return 0;
6185         }
6186
6187         os_free(wpa_s->global->add_psk);
6188         wpa_s->global->add_psk = NULL;
6189
6190         /* Make sure we are not running find during connection establishment */
6191         wpas_p2p_stop_find_oper(wpa_s);
6192
6193         wpa_s->p2p_fallback_to_go_neg = 0;
6194
6195         if (ssid->mode == WPAS_MODE_P2P_GO) {
6196                 if (force_freq > 0) {
6197                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6198                         if (freq < 0)
6199                                 return -1;
6200                 } else {
6201                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6202                         if (freq < 0 ||
6203                             (freq > 0 && !freq_included(wpa_s, channels, freq)))
6204                                 freq = 0;
6205                 }
6206         } else if (ssid->mode == WPAS_MODE_INFRA) {
6207                 freq = neg_freq;
6208                 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6209                         struct os_reltime now;
6210                         struct wpa_bss *bss =
6211                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6212
6213                         os_get_reltime(&now);
6214                         if (bss &&
6215                             !os_reltime_expired(&now, &bss->last_update, 5) &&
6216                             freq_included(wpa_s, channels, bss->freq))
6217                                 freq = bss->freq;
6218                         else
6219                                 freq = 0;
6220                 }
6221
6222                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6223                                              force_scan);
6224         } else {
6225                 return -1;
6226         }
6227
6228         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6229                                     ht40, vht, max_oper_chwidth, channels))
6230                 return -1;
6231
6232         params.role_go = 1;
6233         params.psk_set = ssid->psk_set;
6234         if (params.psk_set)
6235                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6236         if (ssid->passphrase) {
6237                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6238                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6239                                    "persistent group");
6240                         return -1;
6241                 }
6242                 os_strlcpy(params.passphrase, ssid->passphrase,
6243                            sizeof(params.passphrase));
6244         }
6245         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6246         params.ssid_len = ssid->ssid_len;
6247         params.persistent_group = 1;
6248
6249         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6250         if (wpa_s == NULL)
6251                 return -1;
6252
6253         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6254
6255         wpa_s->p2p_first_connection_timeout = connection_timeout;
6256         wpas_start_wps_go(wpa_s, &params, 0);
6257
6258         return 0;
6259 }
6260
6261
6262 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6263                                struct wpabuf *proberesp_ies)
6264 {
6265         struct wpa_supplicant *wpa_s = ctx;
6266         if (wpa_s->ap_iface) {
6267                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6268                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6269                         wpabuf_free(beacon_ies);
6270                         wpabuf_free(proberesp_ies);
6271                         return;
6272                 }
6273                 if (beacon_ies) {
6274                         wpabuf_free(hapd->p2p_beacon_ie);
6275                         hapd->p2p_beacon_ie = beacon_ies;
6276                 }
6277                 wpabuf_free(hapd->p2p_probe_resp_ie);
6278                 hapd->p2p_probe_resp_ie = proberesp_ies;
6279         } else {
6280                 wpabuf_free(beacon_ies);
6281                 wpabuf_free(proberesp_ies);
6282         }
6283         wpa_supplicant_ap_update_beacon(wpa_s);
6284 }
6285
6286
6287 static void wpas_p2p_idle_update(void *ctx, int idle)
6288 {
6289         struct wpa_supplicant *wpa_s = ctx;
6290         if (!wpa_s->ap_iface)
6291                 return;
6292         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6293         if (idle) {
6294                 if (wpa_s->global->p2p_fail_on_wps_complete &&
6295                     wpa_s->p2p_in_provisioning) {
6296                         wpas_p2p_grpform_fail_after_wps(wpa_s);
6297                         return;
6298                 }
6299                 wpas_p2p_set_group_idle_timeout(wpa_s);
6300         } else
6301                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6302 }
6303
6304
6305 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6306                                        struct wpa_ssid *ssid)
6307 {
6308         struct p2p_group *group;
6309         struct p2p_group_config *cfg;
6310
6311         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6312                 return NULL;
6313
6314         cfg = os_zalloc(sizeof(*cfg));
6315         if (cfg == NULL)
6316                 return NULL;
6317
6318         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6319                 cfg->persistent_group = 2;
6320         else if (ssid->p2p_persistent_group)
6321                 cfg->persistent_group = 1;
6322         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6323         if (wpa_s->max_stations &&
6324             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6325                 cfg->max_clients = wpa_s->max_stations;
6326         else
6327                 cfg->max_clients = wpa_s->conf->max_num_sta;
6328         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6329         cfg->ssid_len = ssid->ssid_len;
6330         cfg->freq = ssid->frequency;
6331         cfg->cb_ctx = wpa_s;
6332         cfg->ie_update = wpas_p2p_ie_update;
6333         cfg->idle_update = wpas_p2p_idle_update;
6334         cfg->ip_addr_alloc = WPA_GET_BE32(wpa_s->p2pdev->conf->ip_addr_start)
6335                 != 0;
6336
6337         group = p2p_group_init(wpa_s->global->p2p, cfg);
6338         if (group == NULL)
6339                 os_free(cfg);
6340         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6341                 p2p_group_notif_formation_done(group);
6342         wpa_s->p2p_group = group;
6343         return group;
6344 }
6345
6346
6347 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6348                           int registrar)
6349 {
6350         struct wpa_ssid *ssid = wpa_s->current_ssid;
6351
6352         if (!wpa_s->p2p_in_provisioning) {
6353                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6354                            "provisioning not in progress");
6355                 return;
6356         }
6357
6358         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6359                 u8 go_dev_addr[ETH_ALEN];
6360                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6361                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6362                                           ssid->ssid_len);
6363                 /* Clear any stored provisioning info */
6364                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6365         }
6366
6367         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6368                              NULL);
6369         wpa_s->p2p_go_group_formation_completed = 1;
6370         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6371                 /*
6372                  * Use a separate timeout for initial data connection to
6373                  * complete to allow the group to be removed automatically if
6374                  * something goes wrong in this step before the P2P group idle
6375                  * timeout mechanism is taken into use.
6376                  */
6377                 wpa_dbg(wpa_s, MSG_DEBUG,
6378                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6379                         P2P_MAX_INITIAL_CONN_WAIT);
6380                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6381                                        wpas_p2p_group_formation_timeout,
6382                                        wpa_s->p2pdev, NULL);
6383                 /* Complete group formation on successful data connection. */
6384                 wpa_s->p2p_go_group_formation_completed = 0;
6385         } else if (ssid) {
6386                 /*
6387                  * Use a separate timeout for initial data connection to
6388                  * complete to allow the group to be removed automatically if
6389                  * the client does not complete data connection successfully.
6390                  */
6391                 wpa_dbg(wpa_s, MSG_DEBUG,
6392                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6393                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6394                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6395                                        wpas_p2p_group_formation_timeout,
6396                                        wpa_s->p2pdev, NULL);
6397                 /*
6398                  * Complete group formation on first successful data connection
6399                  */
6400                 wpa_s->p2p_go_group_formation_completed = 0;
6401         }
6402         if (wpa_s->global->p2p)
6403                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6404         wpas_group_formation_completed(wpa_s, 1, 0);
6405 }
6406
6407
6408 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6409                          struct wps_event_fail *fail)
6410 {
6411         if (!wpa_s->p2p_in_provisioning) {
6412                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6413                            "provisioning not in progress");
6414                 return;
6415         }
6416
6417         if (wpa_s->go_params) {
6418                 p2p_clear_provisioning_info(
6419                         wpa_s->global->p2p,
6420                         wpa_s->go_params->peer_device_addr);
6421         }
6422
6423         wpas_notify_p2p_wps_failed(wpa_s, fail);
6424
6425         if (wpa_s == wpa_s->global->p2p_group_formation) {
6426                 /*
6427                  * Allow some time for the failed WPS negotiation exchange to
6428                  * complete, but remove the group since group formation cannot
6429                  * succeed after provisioning failure.
6430                  */
6431                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6432                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6433                 eloop_deplete_timeout(0, 50000,
6434                                       wpas_p2p_group_formation_timeout,
6435                                       wpa_s->p2pdev, NULL);
6436         }
6437 }
6438
6439
6440 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6441 {
6442         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6443             !wpa_s->p2p_in_provisioning)
6444                 return 0;
6445
6446         wpas_p2p_grpform_fail_after_wps(wpa_s);
6447
6448         return 1;
6449 }
6450
6451
6452 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6453                        const char *config_method,
6454                        enum wpas_p2p_prov_disc_use use,
6455                        struct p2ps_provision *p2ps_prov)
6456 {
6457         u16 config_methods;
6458
6459         wpa_s->global->pending_p2ps_group = 0;
6460         wpa_s->global->pending_p2ps_group_freq = 0;
6461         wpa_s->p2p_fallback_to_go_neg = 0;
6462         wpa_s->pending_pd_use = NORMAL_PD;
6463         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6464                 p2ps_prov->conncap = p2ps_group_capability(
6465                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6466                         &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6467
6468                 wpa_printf(MSG_DEBUG,
6469                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6470                            __func__, p2ps_prov->conncap,
6471                            p2ps_prov->adv_id, p2ps_prov->conncap,
6472                            p2ps_prov->status, p2ps_prov->info);
6473
6474                 config_methods = 0;
6475         } else if (os_strncmp(config_method, "display", 7) == 0)
6476                 config_methods = WPS_CONFIG_DISPLAY;
6477         else if (os_strncmp(config_method, "keypad", 6) == 0)
6478                 config_methods = WPS_CONFIG_KEYPAD;
6479         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6480                  os_strncmp(config_method, "pushbutton", 10) == 0)
6481                 config_methods = WPS_CONFIG_PUSHBUTTON;
6482         else {
6483                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6484                 os_free(p2ps_prov);
6485                 return -1;
6486         }
6487
6488         if (use == WPAS_P2P_PD_AUTO) {
6489                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6490                 wpa_s->pending_pd_config_methods = config_methods;
6491                 wpa_s->p2p_auto_pd = 1;
6492                 wpa_s->p2p_auto_join = 0;
6493                 wpa_s->pending_pd_before_join = 0;
6494                 wpa_s->auto_pd_scan_retry = 0;
6495                 wpas_p2p_stop_find(wpa_s);
6496                 wpa_s->p2p_join_scan_count = 0;
6497                 os_get_reltime(&wpa_s->p2p_auto_started);
6498                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6499                            wpa_s->p2p_auto_started.sec,
6500                            wpa_s->p2p_auto_started.usec);
6501                 wpas_p2p_join_scan(wpa_s, NULL);
6502                 return 0;
6503         }
6504
6505         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6506                 os_free(p2ps_prov);
6507                 return -1;
6508         }
6509
6510         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6511                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6512                                  0, 1);
6513 }
6514
6515
6516 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6517                               char *end)
6518 {
6519         return p2p_scan_result_text(ies, ies_len, buf, end);
6520 }
6521
6522
6523 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6524 {
6525         if (!offchannel_pending_action_tx(wpa_s))
6526                 return;
6527
6528         if (wpa_s->p2p_send_action_work) {
6529                 wpas_p2p_free_send_action_work(wpa_s);
6530                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
6531                                      wpa_s, NULL);
6532                 offchannel_send_action_done(wpa_s);
6533         }
6534
6535         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6536                    "operation request");
6537         offchannel_clear_pending_action_tx(wpa_s);
6538 }
6539
6540
6541 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6542                   enum p2p_discovery_type type,
6543                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6544                   const u8 *dev_id, unsigned int search_delay,
6545                   u8 seek_cnt, const char **seek_string, int freq)
6546 {
6547         wpas_p2p_clear_pending_action_tx(wpa_s);
6548         wpa_s->p2p_long_listen = 0;
6549
6550         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6551             wpa_s->p2p_in_provisioning)
6552                 return -1;
6553
6554         wpa_supplicant_cancel_sched_scan(wpa_s);
6555
6556         return p2p_find(wpa_s->global->p2p, timeout, type,
6557                         num_req_dev_types, req_dev_types, dev_id,
6558                         search_delay, seek_cnt, seek_string, freq);
6559 }
6560
6561
6562 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6563                                             struct wpa_scan_results *scan_res)
6564 {
6565         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6566
6567         if (wpa_s->p2p_scan_work) {
6568                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6569                 wpa_s->p2p_scan_work = NULL;
6570                 radio_work_done(work);
6571         }
6572
6573         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6574                 return;
6575
6576         /*
6577          * Indicate that results have been processed so that the P2P module can
6578          * continue pending tasks.
6579          */
6580         p2p_scan_res_handled(wpa_s->global->p2p);
6581 }
6582
6583
6584 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6585 {
6586         wpas_p2p_clear_pending_action_tx(wpa_s);
6587         wpa_s->p2p_long_listen = 0;
6588         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6589         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6590
6591         if (wpa_s->global->p2p)
6592                 p2p_stop_find(wpa_s->global->p2p);
6593
6594         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6595                 wpa_printf(MSG_DEBUG,
6596                            "P2P: Do not consider the scan results after stop_find");
6597                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6598         }
6599 }
6600
6601
6602 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6603 {
6604         wpas_p2p_stop_find_oper(wpa_s);
6605         if (!wpa_s->global->pending_group_iface_for_p2ps)
6606                 wpas_p2p_remove_pending_group_interface(wpa_s);
6607 }
6608
6609
6610 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6611 {
6612         struct wpa_supplicant *wpa_s = eloop_ctx;
6613         wpa_s->p2p_long_listen = 0;
6614 }
6615
6616
6617 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6618 {
6619         int res;
6620
6621         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6622                 return -1;
6623
6624         wpa_supplicant_cancel_sched_scan(wpa_s);
6625         wpas_p2p_clear_pending_action_tx(wpa_s);
6626
6627         if (timeout == 0) {
6628                 /*
6629                  * This is a request for unlimited Listen state. However, at
6630                  * least for now, this is mapped to a Listen state for one
6631                  * hour.
6632                  */
6633                 timeout = 3600;
6634         }
6635         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6636         wpa_s->p2p_long_listen = 0;
6637
6638         /*
6639          * Stop previous find/listen operation to avoid trying to request a new
6640          * remain-on-channel operation while the driver is still running the
6641          * previous one.
6642          */
6643         if (wpa_s->global->p2p)
6644                 p2p_stop_find(wpa_s->global->p2p);
6645
6646         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6647         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6648                 wpa_s->p2p_long_listen = timeout * 1000;
6649                 eloop_register_timeout(timeout, 0,
6650                                        wpas_p2p_long_listen_timeout,
6651                                        wpa_s, NULL);
6652         }
6653
6654         return res;
6655 }
6656
6657
6658 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6659                           u8 *buf, size_t len, int p2p_group)
6660 {
6661         struct wpabuf *p2p_ie;
6662         int ret;
6663
6664         if (wpa_s->global->p2p_disabled)
6665                 return -1;
6666         /*
6667          * Advertize mandatory cross connection capability even on
6668          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6669          */
6670         if (wpa_s->conf->p2p_disabled && p2p_group)
6671                 return -1;
6672         if (wpa_s->global->p2p == NULL)
6673                 return -1;
6674         if (bss == NULL)
6675                 return -1;
6676
6677         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6678         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6679                                p2p_group, p2p_ie);
6680         wpabuf_free(p2p_ie);
6681
6682         return ret;
6683 }
6684
6685
6686 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6687                           const u8 *dst, const u8 *bssid,
6688                           const u8 *ie, size_t ie_len,
6689                           unsigned int rx_freq, int ssi_signal)
6690 {
6691         if (wpa_s->global->p2p_disabled)
6692                 return 0;
6693         if (wpa_s->global->p2p == NULL)
6694                 return 0;
6695
6696         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6697                                  ie, ie_len, rx_freq)) {
6698         case P2P_PREQ_NOT_P2P:
6699                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6700                                  ssi_signal);
6701                 /* fall through */
6702         case P2P_PREQ_MALFORMED:
6703         case P2P_PREQ_NOT_LISTEN:
6704         case P2P_PREQ_NOT_PROCESSED:
6705         default: /* make gcc happy */
6706                 return 0;
6707         case P2P_PREQ_PROCESSED:
6708                 return 1;
6709         }
6710 }
6711
6712
6713 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6714                         const u8 *sa, const u8 *bssid,
6715                         u8 category, const u8 *data, size_t len, int freq)
6716 {
6717         if (wpa_s->global->p2p_disabled)
6718                 return;
6719         if (wpa_s->global->p2p == NULL)
6720                 return;
6721
6722         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6723                       freq);
6724 }
6725
6726
6727 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6728 {
6729         unsigned int bands;
6730
6731         if (wpa_s->global->p2p_disabled)
6732                 return;
6733         if (wpa_s->global->p2p == NULL)
6734                 return;
6735
6736         bands = wpas_get_bands(wpa_s, NULL);
6737         p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
6738 }
6739
6740
6741 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6742 {
6743         p2p_group_deinit(wpa_s->p2p_group);
6744         wpa_s->p2p_group = NULL;
6745
6746         wpa_s->ap_configured_cb = NULL;
6747         wpa_s->ap_configured_cb_ctx = NULL;
6748         wpa_s->ap_configured_cb_data = NULL;
6749         wpa_s->connect_without_scan = NULL;
6750 }
6751
6752
6753 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6754 {
6755         wpa_s->p2p_long_listen = 0;
6756
6757         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6758                 return -1;
6759
6760         return p2p_reject(wpa_s->global->p2p, addr);
6761 }
6762
6763
6764 /* Invite to reinvoke a persistent group */
6765 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6766                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6767                     int vht_center_freq2, int ht40, int vht, int max_chwidth,
6768                     int pref_freq)
6769 {
6770         enum p2p_invite_role role;
6771         u8 *bssid = NULL;
6772         int force_freq = 0;
6773         int res;
6774         int no_pref_freq_given = pref_freq == 0;
6775         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6776
6777         wpa_s->global->p2p_invite_group = NULL;
6778         if (peer_addr)
6779                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6780         else
6781                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6782
6783         wpa_s->p2p_persistent_go_freq = freq;
6784         wpa_s->p2p_go_ht40 = !!ht40;
6785         wpa_s->p2p_go_vht = !!vht;
6786         wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
6787         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
6788         if (ssid->mode == WPAS_MODE_P2P_GO) {
6789                 role = P2P_INVITE_ROLE_GO;
6790                 if (peer_addr == NULL) {
6791                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6792                                    "address in invitation command");
6793                         return -1;
6794                 }
6795                 if (wpas_p2p_create_iface(wpa_s)) {
6796                         if (wpas_p2p_add_group_interface(wpa_s,
6797                                                          WPA_IF_P2P_GO) < 0) {
6798                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6799                                            "allocate a new interface for the "
6800                                            "group");
6801                                 return -1;
6802                         }
6803                         bssid = wpa_s->pending_interface_addr;
6804                 } else if (wpa_s->p2p_mgmt)
6805                         bssid = wpa_s->parent->own_addr;
6806                 else
6807                         bssid = wpa_s->own_addr;
6808         } else {
6809                 role = P2P_INVITE_ROLE_CLIENT;
6810                 peer_addr = ssid->bssid;
6811         }
6812         wpa_s->pending_invite_ssid_id = ssid->id;
6813
6814         size = P2P_MAX_PREF_CHANNELS;
6815         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6816                                    role == P2P_INVITE_ROLE_GO,
6817                                    pref_freq_list, &size);
6818         if (res)
6819                 return res;
6820
6821         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6822                 return -1;
6823
6824         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6825
6826         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6827             no_pref_freq_given && pref_freq > 0 &&
6828             wpa_s->num_multichan_concurrent > 1 &&
6829             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6830                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6831                            pref_freq);
6832                 pref_freq = 0;
6833         }
6834
6835         /*
6836          * Stop any find/listen operations before invitation and possibly
6837          * connection establishment.
6838          */
6839         wpas_p2p_stop_find_oper(wpa_s);
6840
6841         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6842                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6843                           1, pref_freq, -1);
6844 }
6845
6846
6847 /* Invite to join an active group */
6848 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6849                           const u8 *peer_addr, const u8 *go_dev_addr)
6850 {
6851         struct wpa_global *global = wpa_s->global;
6852         enum p2p_invite_role role;
6853         u8 *bssid = NULL;
6854         struct wpa_ssid *ssid;
6855         int persistent;
6856         int freq = 0, force_freq = 0, pref_freq = 0;
6857         int res;
6858         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6859
6860         wpa_s->p2p_persistent_go_freq = 0;
6861         wpa_s->p2p_go_ht40 = 0;
6862         wpa_s->p2p_go_vht = 0;
6863         wpa_s->p2p_go_vht_center_freq2 = 0;
6864         wpa_s->p2p_go_max_oper_chwidth = 0;
6865
6866         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6867                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6868                         break;
6869         }
6870         if (wpa_s == NULL) {
6871                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6872                 return -1;
6873         }
6874
6875         ssid = wpa_s->current_ssid;
6876         if (ssid == NULL) {
6877                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6878                            "invitation");
6879                 return -1;
6880         }
6881
6882         wpa_s->global->p2p_invite_group = wpa_s;
6883         persistent = ssid->p2p_persistent_group &&
6884                 wpas_p2p_get_persistent(wpa_s->p2pdev, peer_addr,
6885                                         ssid->ssid, ssid->ssid_len);
6886
6887         if (ssid->mode == WPAS_MODE_P2P_GO) {
6888                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6889                 bssid = wpa_s->own_addr;
6890                 if (go_dev_addr == NULL)
6891                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6892                 freq = ssid->frequency;
6893         } else {
6894                 role = P2P_INVITE_ROLE_CLIENT;
6895                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6896                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6897                                    "invite to current group");
6898                         return -1;
6899                 }
6900                 bssid = wpa_s->bssid;
6901                 if (go_dev_addr == NULL &&
6902                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6903                         go_dev_addr = wpa_s->go_dev_addr;
6904                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6905                         (int) wpa_s->assoc_freq;
6906         }
6907         wpa_s->p2pdev->pending_invite_ssid_id = -1;
6908
6909         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6910                 return -1;
6911
6912         size = P2P_MAX_PREF_CHANNELS;
6913         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6914                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
6915                                    pref_freq_list, &size);
6916         if (res)
6917                 return res;
6918         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6919
6920         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6921                           ssid->ssid, ssid->ssid_len, force_freq,
6922                           go_dev_addr, persistent, pref_freq, -1);
6923 }
6924
6925
6926 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6927 {
6928         struct wpa_ssid *ssid = wpa_s->current_ssid;
6929         u8 go_dev_addr[ETH_ALEN];
6930         int network_id = -1;
6931         int persistent;
6932         int freq;
6933         u8 ip[3 * 4];
6934         char ip_addr[100];
6935
6936         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6937                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6938                                      wpa_s->p2pdev, NULL);
6939         }
6940
6941         if (!wpa_s->show_group_started || !ssid)
6942                 return;
6943
6944         wpa_s->show_group_started = 0;
6945         if (!wpa_s->p2p_go_group_formation_completed &&
6946             wpa_s->global->p2p_group_formation == wpa_s) {
6947                 wpa_dbg(wpa_s, MSG_DEBUG,
6948                         "P2P: Marking group formation completed on client on data connection");
6949                 wpa_s->p2p_go_group_formation_completed = 1;
6950                 wpa_s->global->p2p_group_formation = NULL;
6951                 wpa_s->p2p_in_provisioning = 0;
6952                 wpa_s->p2p_in_invitation = 0;
6953         }
6954
6955         os_memset(go_dev_addr, 0, ETH_ALEN);
6956         if (ssid->bssid_set)
6957                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6958         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6959                                                ssid->ssid_len);
6960         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6961
6962         if (wpa_s->global->p2p_group_formation == wpa_s)
6963                 wpa_s->global->p2p_group_formation = NULL;
6964
6965         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6966                 (int) wpa_s->assoc_freq;
6967
6968         ip_addr[0] = '\0';
6969         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6970                 int res;
6971
6972                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6973                                   " ip_addr=%u.%u.%u.%u "
6974                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6975                                   ip[0], ip[1], ip[2], ip[3],
6976                                   ip[4], ip[5], ip[6], ip[7],
6977                                   ip[8], ip[9], ip[10], ip[11]);
6978                 if (os_snprintf_error(sizeof(ip_addr), res))
6979                         ip_addr[0] = '\0';
6980         }
6981
6982         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6983                                ssid->passphrase == NULL && ssid->psk_set ?
6984                                ssid->psk : NULL,
6985                                ssid->passphrase, go_dev_addr, persistent,
6986                                ip_addr);
6987
6988         if (persistent)
6989                 network_id = wpas_p2p_store_persistent_group(wpa_s->p2pdev,
6990                                                              ssid, go_dev_addr);
6991         if (network_id < 0)
6992                 network_id = ssid->id;
6993         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6994 }
6995
6996
6997 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6998                           u32 interval1, u32 duration2, u32 interval2)
6999 {
7000         int ret;
7001
7002         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7003                 return -1;
7004
7005         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
7006             wpa_s->current_ssid == NULL ||
7007             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
7008                 return -1;
7009
7010         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
7011                                wpa_s->own_addr, wpa_s->assoc_freq,
7012                                duration1, interval1, duration2, interval2);
7013         if (ret == 0)
7014                 wpa_s->waiting_presence_resp = 1;
7015
7016         return ret;
7017 }
7018
7019
7020 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
7021                         unsigned int interval)
7022 {
7023         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7024                 return -1;
7025
7026         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
7027 }
7028
7029
7030 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
7031 {
7032         if (wpa_s->current_ssid == NULL) {
7033                 /*
7034                  * current_ssid can be cleared when P2P client interface gets
7035                  * disconnected, so assume this interface was used as P2P
7036                  * client.
7037                  */
7038                 return 1;
7039         }
7040         return wpa_s->current_ssid->p2p_group &&
7041                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
7042 }
7043
7044
7045 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
7046 {
7047         struct wpa_supplicant *wpa_s = eloop_ctx;
7048
7049         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
7050                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
7051                            "disabled");
7052                 return;
7053         }
7054
7055         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
7056                    "group");
7057         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7058 }
7059
7060
7061 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7062 {
7063         int timeout;
7064
7065         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7066                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7067
7068         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7069                 return;
7070
7071         timeout = wpa_s->conf->p2p_group_idle;
7072         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7073             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7074             timeout = P2P_MAX_CLIENT_IDLE;
7075
7076         if (timeout == 0)
7077                 return;
7078
7079         if (timeout < 0) {
7080                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7081                         timeout = 0; /* special client mode no-timeout */
7082                 else
7083                         return;
7084         }
7085
7086         if (wpa_s->p2p_in_provisioning) {
7087                 /*
7088                  * Use the normal group formation timeout during the
7089                  * provisioning phase to avoid terminating this process too
7090                  * early due to group idle timeout.
7091                  */
7092                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7093                            "during provisioning");
7094                 return;
7095         }
7096
7097         if (wpa_s->show_group_started) {
7098                 /*
7099                  * Use the normal group formation timeout between the end of
7100                  * the provisioning phase and completion of 4-way handshake to
7101                  * avoid terminating this process too early due to group idle
7102                  * timeout.
7103                  */
7104                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7105                            "while waiting for initial 4-way handshake to "
7106                            "complete");
7107                 return;
7108         }
7109
7110         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7111                    timeout);
7112         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7113                                wpa_s, NULL);
7114 }
7115
7116
7117 /* Returns 1 if the interface was removed */
7118 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7119                           u16 reason_code, const u8 *ie, size_t ie_len,
7120                           int locally_generated)
7121 {
7122         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7123                 return 0;
7124
7125         if (!locally_generated)
7126                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7127                                  ie_len);
7128
7129         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7130             wpa_s->current_ssid &&
7131             wpa_s->current_ssid->p2p_group &&
7132             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7133                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7134                            "session is ending");
7135                 if (wpas_p2p_group_delete(wpa_s,
7136                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7137                     > 0)
7138                         return 1;
7139         }
7140
7141         return 0;
7142 }
7143
7144
7145 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7146                              u16 reason_code, const u8 *ie, size_t ie_len,
7147                              int locally_generated)
7148 {
7149         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7150                 return;
7151
7152         if (!locally_generated)
7153                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7154                                    ie_len);
7155 }
7156
7157
7158 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7159 {
7160         struct p2p_data *p2p = wpa_s->global->p2p;
7161
7162         if (p2p == NULL)
7163                 return;
7164
7165         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7166                 return;
7167
7168         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7169                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7170
7171         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7172                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7173
7174         if (wpa_s->wps &&
7175             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7176                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7177
7178         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7179                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7180
7181         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7182                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7183                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7184                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7185                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7186         }
7187
7188         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7189                 p2p_set_sec_dev_types(p2p,
7190                                       (void *) wpa_s->conf->sec_device_type,
7191                                       wpa_s->conf->num_sec_device_types);
7192
7193         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7194                 int i;
7195                 p2p_remove_wps_vendor_extensions(p2p);
7196                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7197                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7198                                 continue;
7199                         p2p_add_wps_vendor_extension(
7200                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
7201                 }
7202         }
7203
7204         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7205             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7206                 char country[3];
7207                 country[0] = wpa_s->conf->country[0];
7208                 country[1] = wpa_s->conf->country[1];
7209                 country[2] = 0x04;
7210                 p2p_set_country(p2p, country);
7211         }
7212
7213         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7214                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7215                                      wpa_s->conf->p2p_ssid_postfix ?
7216                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7217                                      0);
7218         }
7219
7220         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7221                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7222
7223         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7224                 u8 reg_class, channel;
7225                 int ret;
7226                 unsigned int r;
7227                 u8 channel_forced;
7228
7229                 if (wpa_s->conf->p2p_listen_reg_class &&
7230                     wpa_s->conf->p2p_listen_channel) {
7231                         reg_class = wpa_s->conf->p2p_listen_reg_class;
7232                         channel = wpa_s->conf->p2p_listen_channel;
7233                         channel_forced = 1;
7234                 } else {
7235                         reg_class = 81;
7236                         /*
7237                          * Pick one of the social channels randomly as the
7238                          * listen channel.
7239                          */
7240                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7241                                 channel = 1;
7242                         else
7243                                 channel = 1 + (r % 3) * 5;
7244                         channel_forced = 0;
7245                 }
7246                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7247                                              channel_forced);
7248                 if (ret)
7249                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7250                                    "failed: %d", ret);
7251         }
7252         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7253                 u8 op_reg_class, op_channel, cfg_op_channel;
7254                 int ret = 0;
7255                 unsigned int r;
7256                 if (wpa_s->conf->p2p_oper_reg_class &&
7257                     wpa_s->conf->p2p_oper_channel) {
7258                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7259                         op_channel = wpa_s->conf->p2p_oper_channel;
7260                         cfg_op_channel = 1;
7261                 } else {
7262                         op_reg_class = 81;
7263                         /*
7264                          * Use random operation channel from (1, 6, 11)
7265                          *if no other preference is indicated.
7266                          */
7267                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7268                                 op_channel = 1;
7269                         else
7270                                 op_channel = 1 + (r % 3) * 5;
7271                         cfg_op_channel = 0;
7272                 }
7273                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7274                                            cfg_op_channel);
7275                 if (ret)
7276                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7277                                    "failed: %d", ret);
7278         }
7279
7280         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7281                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7282                                       wpa_s->conf->p2p_pref_chan) < 0) {
7283                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7284                                    "update failed");
7285                 }
7286
7287                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7288                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7289                                    "update failed");
7290                 }
7291         }
7292
7293         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7294                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7295 }
7296
7297
7298 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7299                      int duration)
7300 {
7301         if (!wpa_s->ap_iface)
7302                 return -1;
7303         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7304                                    duration);
7305 }
7306
7307
7308 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7309 {
7310         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7311                 return -1;
7312
7313         wpa_s->global->cross_connection = enabled;
7314         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7315
7316         if (!enabled) {
7317                 struct wpa_supplicant *iface;
7318
7319                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7320                 {
7321                         if (iface->cross_connect_enabled == 0)
7322                                 continue;
7323
7324                         iface->cross_connect_enabled = 0;
7325                         iface->cross_connect_in_use = 0;
7326                         wpa_msg_global(iface->p2pdev, MSG_INFO,
7327                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7328                                        iface->ifname,
7329                                        iface->cross_connect_uplink);
7330                 }
7331         }
7332
7333         return 0;
7334 }
7335
7336
7337 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7338 {
7339         struct wpa_supplicant *iface;
7340
7341         if (!uplink->global->cross_connection)
7342                 return;
7343
7344         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7345                 if (!iface->cross_connect_enabled)
7346                         continue;
7347                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7348                     0)
7349                         continue;
7350                 if (iface->ap_iface == NULL)
7351                         continue;
7352                 if (iface->cross_connect_in_use)
7353                         continue;
7354
7355                 iface->cross_connect_in_use = 1;
7356                 wpa_msg_global(iface->p2pdev, MSG_INFO,
7357                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7358                                iface->ifname, iface->cross_connect_uplink);
7359         }
7360 }
7361
7362
7363 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7364 {
7365         struct wpa_supplicant *iface;
7366
7367         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7368                 if (!iface->cross_connect_enabled)
7369                         continue;
7370                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7371                     0)
7372                         continue;
7373                 if (!iface->cross_connect_in_use)
7374                         continue;
7375
7376                 wpa_msg_global(iface->p2pdev, MSG_INFO,
7377                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7378                                iface->ifname, iface->cross_connect_uplink);
7379                 iface->cross_connect_in_use = 0;
7380         }
7381 }
7382
7383
7384 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7385 {
7386         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7387             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7388             wpa_s->cross_connect_disallowed)
7389                 wpas_p2p_disable_cross_connect(wpa_s);
7390         else
7391                 wpas_p2p_enable_cross_connect(wpa_s);
7392         if (!wpa_s->ap_iface &&
7393             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7394                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7395 }
7396
7397
7398 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7399 {
7400         wpas_p2p_disable_cross_connect(wpa_s);
7401         if (!wpa_s->ap_iface &&
7402             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7403                                          wpa_s, NULL))
7404                 wpas_p2p_set_group_idle_timeout(wpa_s);
7405 }
7406
7407
7408 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7409 {
7410         struct wpa_supplicant *iface;
7411
7412         if (!wpa_s->global->cross_connection)
7413                 return;
7414
7415         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7416                 if (iface == wpa_s)
7417                         continue;
7418                 if (iface->drv_flags &
7419                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7420                         continue;
7421                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7422                     iface != wpa_s->parent)
7423                         continue;
7424
7425                 wpa_s->cross_connect_enabled = 1;
7426                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7427                            sizeof(wpa_s->cross_connect_uplink));
7428                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7429                            "%s to %s whenever uplink is available",
7430                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7431
7432                 if (iface->ap_iface || iface->current_ssid == NULL ||
7433                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7434                     iface->cross_connect_disallowed ||
7435                     iface->wpa_state != WPA_COMPLETED)
7436                         break;
7437
7438                 wpa_s->cross_connect_in_use = 1;
7439                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
7440                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7441                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7442                 break;
7443         }
7444 }
7445
7446
7447 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7448 {
7449         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7450             !wpa_s->p2p_in_provisioning)
7451                 return 0; /* not P2P client operation */
7452
7453         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7454                    "session overlap");
7455         if (wpa_s != wpa_s->p2pdev)
7456                 wpa_msg_ctrl(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_OVERLAP);
7457         wpas_p2p_group_formation_failed(wpa_s, 0);
7458         return 1;
7459 }
7460
7461
7462 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7463 {
7464         struct wpa_supplicant *wpa_s = eloop_ctx;
7465         wpas_p2p_notif_pbc_overlap(wpa_s);
7466 }
7467
7468
7469 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7470                                   enum wpas_p2p_channel_update_trig trig)
7471 {
7472         struct p2p_channels chan, cli_chan;
7473         struct wpa_used_freq_data *freqs = NULL;
7474         unsigned int num = wpa_s->num_multichan_concurrent;
7475
7476         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7477                 return;
7478
7479         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7480         if (!freqs)
7481                 return;
7482
7483         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7484
7485         os_memset(&chan, 0, sizeof(chan));
7486         os_memset(&cli_chan, 0, sizeof(cli_chan));
7487         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7488                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7489                            "channel list");
7490                 return;
7491         }
7492
7493         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7494
7495         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7496
7497         /*
7498          * The used frequencies map changed, so it is possible that a GO is
7499          * using a channel that is no longer valid for P2P use. It is also
7500          * possible that due to policy consideration, it would be preferable to
7501          * move it to a frequency already used by other station interfaces.
7502          */
7503         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7504
7505         os_free(freqs);
7506 }
7507
7508
7509 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7510                                      struct wpa_scan_results *scan_res)
7511 {
7512         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7513 }
7514
7515
7516 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7517 {
7518         struct wpa_global *global = wpa_s->global;
7519         int found = 0;
7520         const u8 *peer;
7521
7522         if (global->p2p == NULL)
7523                 return -1;
7524
7525         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7526
7527         if (wpa_s->pending_interface_name[0] &&
7528             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7529                 found = 1;
7530
7531         peer = p2p_get_go_neg_peer(global->p2p);
7532         if (peer) {
7533                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7534                            MACSTR, MAC2STR(peer));
7535                 p2p_unauthorize(global->p2p, peer);
7536                 found = 1;
7537         }
7538
7539         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7540                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7541                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7542                 found = 1;
7543         }
7544
7545         if (wpa_s->pending_pd_before_join) {
7546                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7547                 wpa_s->pending_pd_before_join = 0;
7548                 found = 1;
7549         }
7550
7551         wpas_p2p_stop_find(wpa_s);
7552
7553         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7554                 if (wpa_s == global->p2p_group_formation &&
7555                     (wpa_s->p2p_in_provisioning ||
7556                      wpa_s->parent->pending_interface_type ==
7557                      WPA_IF_P2P_CLIENT)) {
7558                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7559                                    "formation found - cancelling",
7560                                    wpa_s->ifname);
7561                         found = 1;
7562                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7563                                              wpa_s->p2pdev, NULL);
7564                         if (wpa_s->p2p_in_provisioning) {
7565                                 wpas_group_formation_completed(wpa_s, 0, 0);
7566                                 break;
7567                         }
7568                         wpas_p2p_group_delete(wpa_s,
7569                                               P2P_GROUP_REMOVAL_REQUESTED);
7570                         break;
7571                 } else if (wpa_s->p2p_in_invitation) {
7572                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7573                                    wpa_s->ifname);
7574                         found = 1;
7575                         wpas_p2p_group_formation_failed(wpa_s, 0);
7576                         break;
7577                 }
7578         }
7579
7580         if (!found) {
7581                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7582                 return -1;
7583         }
7584
7585         return 0;
7586 }
7587
7588
7589 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7590 {
7591         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7592                 return;
7593
7594         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7595                    "being available anymore");
7596         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7597 }
7598
7599
7600 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7601                                    int freq_24, int freq_5, int freq_overall)
7602 {
7603         struct p2p_data *p2p = wpa_s->global->p2p;
7604         if (p2p == NULL)
7605                 return;
7606         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7607 }
7608
7609
7610 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7611 {
7612         u8 peer[ETH_ALEN];
7613         struct p2p_data *p2p = wpa_s->global->p2p;
7614
7615         if (p2p == NULL)
7616                 return -1;
7617
7618         if (hwaddr_aton(addr, peer))
7619                 return -1;
7620
7621         return p2p_unauthorize(p2p, peer);
7622 }
7623
7624
7625 /**
7626  * wpas_p2p_disconnect - Disconnect from a P2P Group
7627  * @wpa_s: Pointer to wpa_supplicant data
7628  * Returns: 0 on success, -1 on failure
7629  *
7630  * This can be used to disconnect from a group in which the local end is a P2P
7631  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7632  * virtual network interface was created for this group, that interface will be
7633  * removed. Otherwise, only the configured P2P group network will be removed
7634  * from the interface.
7635  */
7636 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7637 {
7638
7639         if (wpa_s == NULL)
7640                 return -1;
7641
7642         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7643                 -1 : 0;
7644 }
7645
7646
7647 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7648 {
7649         int ret;
7650
7651         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7652                 return 0;
7653
7654         ret = p2p_in_progress(wpa_s->global->p2p);
7655         if (ret == 0) {
7656                 /*
7657                  * Check whether there is an ongoing WPS provisioning step (or
7658                  * other parts of group formation) on another interface since
7659                  * p2p_in_progress() does not report this to avoid issues for
7660                  * scans during such provisioning step.
7661                  */
7662                 if (wpa_s->global->p2p_group_formation &&
7663                     wpa_s->global->p2p_group_formation != wpa_s) {
7664                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7665                                 "in group formation",
7666                                 wpa_s->global->p2p_group_formation->ifname);
7667                         ret = 1;
7668                 }
7669         }
7670
7671         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7672                 struct os_reltime now;
7673                 os_get_reltime(&now);
7674                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7675                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7676                         /* Wait for the first client has expired */
7677                         wpa_s->global->p2p_go_wait_client.sec = 0;
7678                 } else {
7679                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7680                         ret = 1;
7681                 }
7682         }
7683
7684         return ret;
7685 }
7686
7687
7688 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7689                               struct wpa_ssid *ssid)
7690 {
7691         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7692             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7693                                  wpa_s->p2pdev, NULL) > 0) {
7694                 /**
7695                  * Remove the network by scheduling the group formation
7696                  * timeout to happen immediately. The teardown code
7697                  * needs to be scheduled to run asynch later so that we
7698                  * don't delete data from under ourselves unexpectedly.
7699                  * Calling wpas_p2p_group_formation_timeout directly
7700                  * causes a series of crashes in WPS failure scenarios.
7701                  */
7702                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7703                            "P2P group network getting removed");
7704                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7705                                        wpa_s->p2pdev, NULL);
7706         }
7707 }
7708
7709
7710 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7711                                           const u8 *addr, const u8 *ssid,
7712                                           size_t ssid_len)
7713 {
7714         struct wpa_ssid *s;
7715         size_t i;
7716
7717         for (s = wpa_s->conf->ssid; s; s = s->next) {
7718                 if (s->disabled != 2)
7719                         continue;
7720                 if (ssid &&
7721                     (ssid_len != s->ssid_len ||
7722                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7723                         continue;
7724                 if (addr == NULL) {
7725                         if (s->mode == WPAS_MODE_P2P_GO)
7726                                 return s;
7727                         continue;
7728                 }
7729                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7730                         return s; /* peer is GO in the persistent group */
7731                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7732                         continue;
7733                 for (i = 0; i < s->num_p2p_clients; i++) {
7734                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7735                                       addr, ETH_ALEN) == 0)
7736                                 return s; /* peer is P2P client in persistent
7737                                            * group */
7738                 }
7739         }
7740
7741         return NULL;
7742 }
7743
7744
7745 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7746                                        const u8 *addr)
7747 {
7748         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7749                                  wpa_s->p2pdev, NULL) > 0) {
7750                 /*
7751                  * This can happen if WPS provisioning step is not terminated
7752                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7753                  * peer was able to connect, there is no need to time out group
7754                  * formation after this, though. In addition, this is used with
7755                  * the initial connection wait on the GO as a separate formation
7756                  * timeout and as such, expected to be hit after the initial WPS
7757                  * provisioning step.
7758                  */
7759                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7760
7761                 if (!wpa_s->p2p_go_group_formation_completed &&
7762                     !wpa_s->group_formation_reported) {
7763                         /*
7764                          * GO has not yet notified group formation success since
7765                          * the WPS step was not completed cleanly. Do that
7766                          * notification now since the P2P Client was able to
7767                          * connect and as such, must have received the
7768                          * credential from the WPS step.
7769                          */
7770                         if (wpa_s->global->p2p)
7771                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7772                         wpas_group_formation_completed(wpa_s, 1, 0);
7773                 }
7774         }
7775         if (!wpa_s->p2p_go_group_formation_completed) {
7776                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7777                 wpa_s->p2p_go_group_formation_completed = 1;
7778                 wpa_s->global->p2p_group_formation = NULL;
7779                 wpa_s->p2p_in_provisioning = 0;
7780                 wpa_s->p2p_in_invitation = 0;
7781         }
7782         wpa_s->global->p2p_go_wait_client.sec = 0;
7783         if (addr == NULL)
7784                 return;
7785         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7786 }
7787
7788
7789 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7790                                        int group_added)
7791 {
7792         struct wpa_supplicant *group = wpa_s;
7793         int ret = 0;
7794
7795         if (wpa_s->global->p2p_group_formation)
7796                 group = wpa_s->global->p2p_group_formation;
7797         wpa_s = wpa_s->global->p2p_init_wpa_s;
7798         offchannel_send_action_done(wpa_s);
7799         if (group_added)
7800                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7801         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7802         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7803                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7804                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7805                          wpa_s->p2p_go_vht_center_freq2,
7806                          wpa_s->p2p_persistent_id,
7807                          wpa_s->p2p_pd_before_go_neg,
7808                          wpa_s->p2p_go_ht40,
7809                          wpa_s->p2p_go_vht,
7810                          wpa_s->p2p_go_max_oper_chwidth, NULL, 0);
7811         return ret;
7812 }
7813
7814
7815 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7816 {
7817         int res;
7818
7819         if (!wpa_s->p2p_fallback_to_go_neg ||
7820             wpa_s->p2p_in_provisioning <= 5)
7821                 return 0;
7822
7823         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7824                 return 0; /* peer operating as a GO */
7825
7826         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7827                 "fallback to GO Negotiation");
7828         wpa_msg_global(wpa_s->p2pdev, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7829                        "reason=GO-not-found");
7830         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7831
7832         return res == 1 ? 2 : 1;
7833 }
7834
7835
7836 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7837 {
7838         struct wpa_supplicant *ifs;
7839
7840         if (wpa_s->wpa_state > WPA_SCANNING) {
7841                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7842                         "concurrent operation",
7843                         wpa_s->conf->p2p_search_delay);
7844                 return wpa_s->conf->p2p_search_delay;
7845         }
7846
7847         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7848                          radio_list) {
7849                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7850                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7851                                 "delay due to concurrent operation on "
7852                                 "interface %s",
7853                                 wpa_s->conf->p2p_search_delay,
7854                                 ifs->ifname);
7855                         return wpa_s->conf->p2p_search_delay;
7856                 }
7857         }
7858
7859         return 0;
7860 }
7861
7862
7863 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7864                                      struct wpa_ssid *s, const u8 *addr,
7865                                      int iface_addr)
7866 {
7867         struct psk_list_entry *psk, *tmp;
7868         int changed = 0;
7869
7870         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7871                               list) {
7872                 if ((iface_addr && !psk->p2p &&
7873                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7874                     (!iface_addr && psk->p2p &&
7875                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7876                         wpa_dbg(wpa_s, MSG_DEBUG,
7877                                 "P2P: Remove persistent group PSK list entry for "
7878                                 MACSTR " p2p=%u",
7879                                 MAC2STR(psk->addr), psk->p2p);
7880                         dl_list_del(&psk->list);
7881                         os_free(psk);
7882                         changed++;
7883                 }
7884         }
7885
7886         return changed;
7887 }
7888
7889
7890 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7891                          const u8 *p2p_dev_addr,
7892                          const u8 *psk, size_t psk_len)
7893 {
7894         struct wpa_ssid *ssid = wpa_s->current_ssid;
7895         struct wpa_ssid *persistent;
7896         struct psk_list_entry *p, *last;
7897
7898         if (psk_len != sizeof(p->psk))
7899                 return;
7900
7901         if (p2p_dev_addr) {
7902                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7903                         " p2p_dev_addr=" MACSTR,
7904                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7905                 if (is_zero_ether_addr(p2p_dev_addr))
7906                         p2p_dev_addr = NULL;
7907         } else {
7908                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7909                         MAC2STR(mac_addr));
7910         }
7911
7912         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7913                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7914                 /* To be added to persistent group once created */
7915                 if (wpa_s->global->add_psk == NULL) {
7916                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7917                         if (wpa_s->global->add_psk == NULL)
7918                                 return;
7919                 }
7920                 p = wpa_s->global->add_psk;
7921                 if (p2p_dev_addr) {
7922                         p->p2p = 1;
7923                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7924                 } else {
7925                         p->p2p = 0;
7926                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7927                 }
7928                 os_memcpy(p->psk, psk, psk_len);
7929                 return;
7930         }
7931
7932         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7933                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7934                 return;
7935         }
7936
7937         persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
7938                                              ssid->ssid_len);
7939         if (!persistent) {
7940                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7941                 return;
7942         }
7943
7944         p = os_zalloc(sizeof(*p));
7945         if (p == NULL)
7946                 return;
7947         if (p2p_dev_addr) {
7948                 p->p2p = 1;
7949                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7950         } else {
7951                 p->p2p = 0;
7952                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7953         }
7954         os_memcpy(p->psk, psk, psk_len);
7955
7956         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7957             (last = dl_list_last(&persistent->psk_list,
7958                                  struct psk_list_entry, list))) {
7959                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7960                         MACSTR " (p2p=%u) to make room for a new one",
7961                         MAC2STR(last->addr), last->p2p);
7962                 dl_list_del(&last->list);
7963                 os_free(last);
7964         }
7965
7966         wpas_p2p_remove_psk_entry(wpa_s->p2pdev, persistent,
7967                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7968                                   p2p_dev_addr == NULL);
7969         if (p2p_dev_addr) {
7970                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7971                         MACSTR, MAC2STR(p2p_dev_addr));
7972         } else {
7973                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7974                         MAC2STR(mac_addr));
7975         }
7976         dl_list_add(&persistent->psk_list, &p->list);
7977
7978         if (wpa_s->p2pdev->conf->update_config &&
7979             wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
7980                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7981 }
7982
7983
7984 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7985                                 struct wpa_ssid *s, const u8 *addr,
7986                                 int iface_addr)
7987 {
7988         int res;
7989
7990         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7991         if (res > 0 && wpa_s->conf->update_config &&
7992             wpa_config_write(wpa_s->confname, wpa_s->conf))
7993                 wpa_dbg(wpa_s, MSG_DEBUG,
7994                         "P2P: Failed to update configuration");
7995 }
7996
7997
7998 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7999                                       const u8 *peer, int iface_addr)
8000 {
8001         struct hostapd_data *hapd;
8002         struct hostapd_wpa_psk *psk, *prev, *rem;
8003         struct sta_info *sta;
8004
8005         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
8006             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
8007                 return;
8008
8009         /* Remove per-station PSK entry */
8010         hapd = wpa_s->ap_iface->bss[0];
8011         prev = NULL;
8012         psk = hapd->conf->ssid.wpa_psk;
8013         while (psk) {
8014                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
8015                     (!iface_addr &&
8016                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
8017                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
8018                                 MACSTR " iface_addr=%d",
8019                                 MAC2STR(peer), iface_addr);
8020                         if (prev)
8021                                 prev->next = psk->next;
8022                         else
8023                                 hapd->conf->ssid.wpa_psk = psk->next;
8024                         rem = psk;
8025                         psk = psk->next;
8026                         os_free(rem);
8027                 } else {
8028                         prev = psk;
8029                         psk = psk->next;
8030                 }
8031         }
8032
8033         /* Disconnect from group */
8034         if (iface_addr)
8035                 sta = ap_get_sta(hapd, peer);
8036         else
8037                 sta = ap_get_sta_p2p(hapd, peer);
8038         if (sta) {
8039                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
8040                         " (iface_addr=%d) from group",
8041                         MAC2STR(peer), iface_addr);
8042                 hostapd_drv_sta_deauth(hapd, sta->addr,
8043                                        WLAN_REASON_DEAUTH_LEAVING);
8044                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
8045         }
8046 }
8047
8048
8049 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
8050                             int iface_addr)
8051 {
8052         struct wpa_ssid *s;
8053         struct wpa_supplicant *w;
8054         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
8055
8056         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
8057
8058         /* Remove from any persistent group */
8059         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
8060                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8061                         continue;
8062                 if (!iface_addr)
8063                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
8064                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
8065         }
8066
8067         /* Remove from any operating group */
8068         for (w = wpa_s->global->ifaces; w; w = w->next)
8069                 wpas_p2p_remove_client_go(w, peer, iface_addr);
8070 }
8071
8072
8073 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8074 {
8075         struct wpa_supplicant *wpa_s = eloop_ctx;
8076         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8077 }
8078
8079
8080 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8081 {
8082         struct wpa_supplicant *wpa_s = eloop_ctx;
8083
8084         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8085         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8086 }
8087
8088
8089 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8090                                         struct wpa_ssid *ssid)
8091 {
8092         struct wpa_supplicant *iface;
8093
8094         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8095                 if (!iface->current_ssid ||
8096                     iface->current_ssid->frequency == freq ||
8097                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8098                      !iface->current_ssid->p2p_group))
8099                         continue;
8100
8101                 /* Remove the connection with least priority */
8102                 if (!wpas_is_p2p_prioritized(iface)) {
8103                         /* STA connection has priority over existing
8104                          * P2P connection, so remove the interface. */
8105                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8106                         eloop_register_timeout(0, 0,
8107                                                wpas_p2p_group_freq_conflict,
8108                                                iface, NULL);
8109                         /* If connection in progress is P2P connection, do not
8110                          * proceed for the connection. */
8111                         if (wpa_s == iface)
8112                                 return -1;
8113                         else
8114                                 return 0;
8115                 } else {
8116                         /* P2P connection has priority, disable the STA network
8117                          */
8118                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
8119                                                        ssid);
8120                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8121                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8122                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8123                                   ETH_ALEN);
8124                         /* If P2P connection is in progress, continue
8125                          * connecting...*/
8126                         if (wpa_s == iface)
8127                                 return 0;
8128                         else
8129                                 return -1;
8130                 }
8131         }
8132
8133         return 0;
8134 }
8135
8136
8137 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8138 {
8139         struct wpa_ssid *ssid = wpa_s->current_ssid;
8140
8141         if (ssid == NULL || !ssid->p2p_group)
8142                 return 0;
8143
8144         if (wpa_s->p2p_last_4way_hs_fail &&
8145             wpa_s->p2p_last_4way_hs_fail == ssid) {
8146                 u8 go_dev_addr[ETH_ALEN];
8147                 struct wpa_ssid *persistent;
8148
8149                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8150                                               ssid->ssid,
8151                                               ssid->ssid_len) <= 0) {
8152                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8153                         goto disconnect;
8154                 }
8155
8156                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8157                         MACSTR, MAC2STR(go_dev_addr));
8158                 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, go_dev_addr,
8159                                                      ssid->ssid,
8160                                                      ssid->ssid_len);
8161                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8162                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8163                         goto disconnect;
8164                 }
8165                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
8166                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8167                                persistent->id);
8168         disconnect:
8169                 wpa_s->p2p_last_4way_hs_fail = NULL;
8170                 /*
8171                  * Remove the group from a timeout to avoid issues with caller
8172                  * continuing to use the interface if this is on a P2P group
8173                  * interface.
8174                  */
8175                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8176                                        wpa_s, NULL);
8177                 return 1;
8178         }
8179
8180         wpa_s->p2p_last_4way_hs_fail = ssid;
8181         return 0;
8182 }
8183
8184
8185 #ifdef CONFIG_WPS_NFC
8186
8187 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8188                                              struct wpabuf *p2p)
8189 {
8190         struct wpabuf *ret;
8191         size_t wsc_len;
8192
8193         if (p2p == NULL) {
8194                 wpabuf_free(wsc);
8195                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8196                 return NULL;
8197         }
8198
8199         wsc_len = wsc ? wpabuf_len(wsc) : 0;
8200         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8201         if (ret == NULL) {
8202                 wpabuf_free(wsc);
8203                 wpabuf_free(p2p);
8204                 return NULL;
8205         }
8206
8207         wpabuf_put_be16(ret, wsc_len);
8208         if (wsc)
8209                 wpabuf_put_buf(ret, wsc);
8210         wpabuf_put_be16(ret, wpabuf_len(p2p));
8211         wpabuf_put_buf(ret, p2p);
8212
8213         wpabuf_free(wsc);
8214         wpabuf_free(p2p);
8215         wpa_hexdump_buf(MSG_DEBUG,
8216                         "P2P: Generated NFC connection handover message", ret);
8217
8218         if (ndef && ret) {
8219                 struct wpabuf *tmp;
8220                 tmp = ndef_build_p2p(ret);
8221                 wpabuf_free(ret);
8222                 if (tmp == NULL) {
8223                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8224                         return NULL;
8225                 }
8226                 ret = tmp;
8227         }
8228
8229         return ret;
8230 }
8231
8232
8233 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8234                              struct wpa_ssid **ssid, u8 *go_dev_addr)
8235 {
8236         struct wpa_supplicant *iface;
8237
8238         if (go_dev_addr)
8239                 os_memset(go_dev_addr, 0, ETH_ALEN);
8240         if (ssid)
8241                 *ssid = NULL;
8242         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8243                 if (iface->wpa_state < WPA_ASSOCIATING ||
8244                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8245                     !iface->current_ssid->p2p_group ||
8246                     iface->current_ssid->mode != WPAS_MODE_INFRA)
8247                         continue;
8248                 if (ssid)
8249                         *ssid = iface->current_ssid;
8250                 if (go_dev_addr)
8251                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8252                 return iface->assoc_freq;
8253         }
8254         return 0;
8255 }
8256
8257
8258 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8259                                           int ndef)
8260 {
8261         struct wpabuf *wsc, *p2p;
8262         struct wpa_ssid *ssid;
8263         u8 go_dev_addr[ETH_ALEN];
8264         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8265
8266         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8267                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8268                 return NULL;
8269         }
8270
8271         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8272             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8273                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8274                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8275                 return NULL;
8276         }
8277
8278         if (cli_freq == 0) {
8279                 wsc = wps_build_nfc_handover_req_p2p(
8280                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8281         } else
8282                 wsc = NULL;
8283         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8284                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8285                                          ssid ? ssid->ssid_len : 0);
8286
8287         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8288 }
8289
8290
8291 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8292                                           int ndef, int tag)
8293 {
8294         struct wpabuf *wsc, *p2p;
8295         struct wpa_ssid *ssid;
8296         u8 go_dev_addr[ETH_ALEN];
8297         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8298
8299         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8300                 return NULL;
8301
8302         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8303             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8304                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8305                 return NULL;
8306
8307         if (cli_freq == 0) {
8308                 wsc = wps_build_nfc_handover_sel_p2p(
8309                         wpa_s->parent->wps,
8310                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8311                         DEV_PW_NFC_CONNECTION_HANDOVER,
8312                         wpa_s->conf->wps_nfc_dh_pubkey,
8313                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8314         } else
8315                 wsc = NULL;
8316         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8317                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8318                                          ssid ? ssid->ssid_len : 0);
8319
8320         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8321 }
8322
8323
8324 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8325                                    struct p2p_nfc_params *params)
8326 {
8327         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8328                    "connection handover (freq=%d)",
8329                    params->go_freq);
8330
8331         if (params->go_freq && params->go_ssid_len) {
8332                 wpa_s->p2p_wps_method = WPS_NFC;
8333                 wpa_s->pending_join_wps_method = WPS_NFC;
8334                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8335                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8336                           ETH_ALEN);
8337                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8338                                            params->go_ssid,
8339                                            params->go_ssid_len);
8340         }
8341
8342         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8343                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8344                                 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8345                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8346                                 params->go_ssid_len ? params->go_ssid : NULL,
8347                                 params->go_ssid_len);
8348 }
8349
8350
8351 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8352                                   struct p2p_nfc_params *params, int tag)
8353 {
8354         int res, persistent;
8355         struct wpa_ssid *ssid;
8356
8357         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8358                    "connection handover");
8359         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8360                 ssid = wpa_s->current_ssid;
8361                 if (ssid == NULL)
8362                         continue;
8363                 if (ssid->mode != WPAS_MODE_P2P_GO)
8364                         continue;
8365                 if (wpa_s->ap_iface == NULL)
8366                         continue;
8367                 break;
8368         }
8369         if (wpa_s == NULL) {
8370                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8371                 return -1;
8372         }
8373
8374         if (wpa_s->parent->p2p_oob_dev_pw_id !=
8375             DEV_PW_NFC_CONNECTION_HANDOVER &&
8376             !wpa_s->parent->p2p_oob_dev_pw) {
8377                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8378                 return -1;
8379         }
8380         res = wpas_ap_wps_add_nfc_pw(
8381                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
8382                 wpa_s->parent->p2p_oob_dev_pw,
8383                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
8384                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
8385         if (res)
8386                 return res;
8387
8388         if (!tag) {
8389                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8390                 return 0;
8391         }
8392
8393         if (!params->peer ||
8394             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8395                 return 0;
8396
8397         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8398                    " to join", MAC2STR(params->peer->p2p_device_addr));
8399
8400         wpa_s->global->p2p_invite_group = wpa_s;
8401         persistent = ssid->p2p_persistent_group &&
8402                 wpas_p2p_get_persistent(wpa_s->parent,
8403                                         params->peer->p2p_device_addr,
8404                                         ssid->ssid, ssid->ssid_len);
8405         wpa_s->parent->pending_invite_ssid_id = -1;
8406
8407         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8408                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8409                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8410                           wpa_s->global->p2p_dev_addr, persistent, 0,
8411                           wpa_s->parent->p2p_oob_dev_pw_id);
8412 }
8413
8414
8415 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8416                                     struct p2p_nfc_params *params,
8417                                     int forced_freq)
8418 {
8419         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8420                    "connection handover");
8421         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8422                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8423                                 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8424                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8425                                 NULL, 0);
8426 }
8427
8428
8429 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8430                                     struct p2p_nfc_params *params,
8431                                     int forced_freq)
8432 {
8433         int res;
8434
8435         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8436                    "connection handover");
8437         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8438                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8439                                forced_freq, wpa_s->p2p_go_vht_center_freq2,
8440                                -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8441                                NULL, 0);
8442         if (res)
8443                 return res;
8444
8445         res = wpas_p2p_listen(wpa_s, 60);
8446         if (res) {
8447                 p2p_unauthorize(wpa_s->global->p2p,
8448                                 params->peer->p2p_device_addr);
8449         }
8450
8451         return res;
8452 }
8453
8454
8455 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8456                                             const struct wpabuf *data,
8457                                             int sel, int tag, int forced_freq)
8458 {
8459         const u8 *pos, *end;
8460         u16 len, id;
8461         struct p2p_nfc_params params;
8462         int res;
8463
8464         os_memset(&params, 0, sizeof(params));
8465         params.sel = sel;
8466
8467         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8468
8469         pos = wpabuf_head(data);
8470         end = pos + wpabuf_len(data);
8471
8472         if (end - pos < 2) {
8473                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8474                            "attributes");
8475                 return -1;
8476         }
8477         len = WPA_GET_BE16(pos);
8478         pos += 2;
8479         if (len > end - pos) {
8480                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8481                            "attributes");
8482                 return -1;
8483         }
8484         params.wsc_attr = pos;
8485         params.wsc_len = len;
8486         pos += len;
8487
8488         if (end - pos < 2) {
8489                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8490                            "attributes");
8491                 return -1;
8492         }
8493         len = WPA_GET_BE16(pos);
8494         pos += 2;
8495         if (len > end - pos) {
8496                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8497                            "attributes");
8498                 return -1;
8499         }
8500         params.p2p_attr = pos;
8501         params.p2p_len = len;
8502         pos += len;
8503
8504         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8505                     params.wsc_attr, params.wsc_len);
8506         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8507                     params.p2p_attr, params.p2p_len);
8508         if (pos < end) {
8509                 wpa_hexdump(MSG_DEBUG,
8510                             "P2P: Ignored extra data after P2P attributes",
8511                             pos, end - pos);
8512         }
8513
8514         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8515         if (res)
8516                 return res;
8517
8518         if (params.next_step == NO_ACTION)
8519                 return 0;
8520
8521         if (params.next_step == BOTH_GO) {
8522                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8523                         MAC2STR(params.peer->p2p_device_addr));
8524                 return 0;
8525         }
8526
8527         if (params.next_step == PEER_CLIENT) {
8528                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8529                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8530                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8531                                 " ssid=\"%s\"",
8532                                 MAC2STR(params.peer->p2p_device_addr),
8533                                 params.go_freq,
8534                                 MAC2STR(params.go_dev_addr),
8535                                 wpa_ssid_txt(params.go_ssid,
8536                                              params.go_ssid_len));
8537                 } else {
8538                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8539                                 "peer=" MACSTR " freq=%d",
8540                                 MAC2STR(params.peer->p2p_device_addr),
8541                                 params.go_freq);
8542                 }
8543                 return 0;
8544         }
8545
8546         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8547                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8548                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8549                 return 0;
8550         }
8551
8552         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8553         wpa_s->p2p_oob_dev_pw = NULL;
8554
8555         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8556                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8557                            "received");
8558                 return -1;
8559         }
8560
8561         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8562         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8563         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8564                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8565         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8566                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8567         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8568
8569         if (tag) {
8570                 if (id < 0x10) {
8571                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8572                                    "peer OOB Device Password Id %u", id);
8573                         return -1;
8574                 }
8575                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8576                            "Device Password Id %u", id);
8577                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8578                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8579                                 params.oob_dev_pw_len -
8580                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
8581                 wpa_s->p2p_oob_dev_pw_id = id;
8582                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8583                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8584                         params.oob_dev_pw_len -
8585                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8586                 if (wpa_s->p2p_oob_dev_pw == NULL)
8587                         return -1;
8588
8589                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8590                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8591                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8592                         return -1;
8593         } else {
8594                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8595                            "without Device Password");
8596                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8597         }
8598
8599         switch (params.next_step) {
8600         case NO_ACTION:
8601         case BOTH_GO:
8602         case PEER_CLIENT:
8603                 /* already covered above */
8604                 return 0;
8605         case JOIN_GROUP:
8606                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8607         case AUTH_JOIN:
8608                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8609         case INIT_GO_NEG:
8610                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8611         case RESP_GO_NEG:
8612                 /* TODO: use own OOB Dev Pw */
8613                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8614         }
8615
8616         return -1;
8617 }
8618
8619
8620 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8621                              const struct wpabuf *data, int forced_freq)
8622 {
8623         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8624                 return -1;
8625
8626         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8627 }
8628
8629
8630 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8631                                  const struct wpabuf *req,
8632                                  const struct wpabuf *sel, int forced_freq)
8633 {
8634         struct wpabuf *tmp;
8635         int ret;
8636
8637         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8638                 return -1;
8639
8640         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8641
8642         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8643                           wpabuf_head(req), wpabuf_len(req));
8644         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8645                           wpabuf_head(sel), wpabuf_len(sel));
8646         if (forced_freq)
8647                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8648         tmp = ndef_parse_p2p(init ? sel : req);
8649         if (tmp == NULL) {
8650                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8651                 return -1;
8652         }
8653
8654         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8655                                                forced_freq);
8656         wpabuf_free(tmp);
8657
8658         return ret;
8659 }
8660
8661
8662 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8663 {
8664         const u8 *if_addr;
8665         int go_intent = wpa_s->conf->p2p_go_intent;
8666         struct wpa_supplicant *iface;
8667
8668         if (wpa_s->global->p2p == NULL)
8669                 return -1;
8670
8671         if (!enabled) {
8672                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8673                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8674                 {
8675                         if (!iface->ap_iface)
8676                                 continue;
8677                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8678                 }
8679                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8680                                                  0, NULL);
8681                 if (wpa_s->p2p_nfc_tag_enabled)
8682                         wpas_p2p_remove_pending_group_interface(wpa_s);
8683                 wpa_s->p2p_nfc_tag_enabled = 0;
8684                 return 0;
8685         }
8686
8687         if (wpa_s->global->p2p_disabled)
8688                 return -1;
8689
8690         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8691             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8692             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8693             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8694                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8695                            "to allow static handover cases");
8696                 return -1;
8697         }
8698
8699         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8700
8701         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8702         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8703         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8704         if (wpa_s->p2p_oob_dev_pw == NULL)
8705                 return -1;
8706         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8707
8708         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8709             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8710                 /*
8711                  * P2P Group Interface present and the command came on group
8712                  * interface, so enable the token for the current interface.
8713                  */
8714                 wpa_s->create_p2p_iface = 0;
8715         } else {
8716                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8717         }
8718
8719         if (wpa_s->create_p2p_iface) {
8720                 enum wpa_driver_if_type iftype;
8721                 /* Prepare to add a new interface for the group */
8722                 iftype = WPA_IF_P2P_GROUP;
8723                 if (go_intent == 15)
8724                         iftype = WPA_IF_P2P_GO;
8725                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8726                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8727                                    "interface for the group");
8728                         return -1;
8729                 }
8730
8731                 if_addr = wpa_s->pending_interface_addr;
8732         } else if (wpa_s->p2p_mgmt)
8733                 if_addr = wpa_s->parent->own_addr;
8734         else
8735                 if_addr = wpa_s->own_addr;
8736
8737         wpa_s->p2p_nfc_tag_enabled = enabled;
8738
8739         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8740                 struct hostapd_data *hapd;
8741                 if (iface->ap_iface == NULL)
8742                         continue;
8743                 hapd = iface->ap_iface->bss[0];
8744                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8745                 hapd->conf->wps_nfc_dh_pubkey =
8746                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8747                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8748                 hapd->conf->wps_nfc_dh_privkey =
8749                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8750                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8751                 hapd->conf->wps_nfc_dev_pw =
8752                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8753                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8754
8755                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8756                         wpa_dbg(iface, MSG_DEBUG,
8757                                 "P2P: Failed to enable NFC Tag for GO");
8758                 }
8759         }
8760         p2p_set_authorized_oob_dev_pw_id(
8761                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8762                 if_addr);
8763
8764         return 0;
8765 }
8766
8767 #endif /* CONFIG_WPS_NFC */
8768
8769
8770 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8771                                              struct wpa_used_freq_data *freqs,
8772                                              unsigned int num)
8773 {
8774         u8 curr_chan, cand, chan;
8775         unsigned int i;
8776
8777         /*
8778          * If possible, optimize the Listen channel to be a channel that is
8779          * already used by one of the other interfaces.
8780          */
8781         if (!wpa_s->conf->p2p_optimize_listen_chan)
8782                 return;
8783
8784         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8785                 return;
8786
8787         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8788         for (i = 0, cand = 0; i < num; i++) {
8789                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8790                 if (curr_chan == chan) {
8791                         cand = 0;
8792                         break;
8793                 }
8794
8795                 if (chan == 1 || chan == 6 || chan == 11)
8796                         cand = chan;
8797         }
8798
8799         if (cand) {
8800                 wpa_dbg(wpa_s, MSG_DEBUG,
8801                         "P2P: Update Listen channel to %u based on operating channel",
8802                         cand);
8803                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8804         }
8805 }
8806
8807
8808 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8809 {
8810         struct hostapd_config *conf;
8811         struct p2p_go_neg_results params;
8812         struct csa_settings csa_settings;
8813         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8814         int old_freq = current_ssid->frequency;
8815         int ret;
8816
8817         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8818                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8819                 return -1;
8820         }
8821
8822         /*
8823          * TODO: This function may not always work correctly. For example,
8824          * when we have a running GO and a BSS on a DFS channel.
8825          */
8826         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8827                 wpa_dbg(wpa_s, MSG_DEBUG,
8828                         "P2P CSA: Failed to select new frequency for GO");
8829                 return -1;
8830         }
8831
8832         if (current_ssid->frequency == params.freq) {
8833                 wpa_dbg(wpa_s, MSG_DEBUG,
8834                         "P2P CSA: Selected same frequency - not moving GO");
8835                 return 0;
8836         }
8837
8838         conf = hostapd_config_defaults();
8839         if (!conf) {
8840                 wpa_dbg(wpa_s, MSG_DEBUG,
8841                         "P2P CSA: Failed to allocate default config");
8842                 return -1;
8843         }
8844
8845         current_ssid->frequency = params.freq;
8846         if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
8847                 wpa_dbg(wpa_s, MSG_DEBUG,
8848                         "P2P CSA: Failed to create new GO config");
8849                 ret = -1;
8850                 goto out;
8851         }
8852
8853         if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
8854                 wpa_dbg(wpa_s, MSG_DEBUG,
8855                         "P2P CSA: CSA to a different band is not supported");
8856                 ret = -1;
8857                 goto out;
8858         }
8859
8860         os_memset(&csa_settings, 0, sizeof(csa_settings));
8861         csa_settings.cs_count = P2P_GO_CSA_COUNT;
8862         csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
8863         csa_settings.freq_params.freq = params.freq;
8864         csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
8865         csa_settings.freq_params.ht_enabled = conf->ieee80211n;
8866         csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
8867
8868         if (conf->ieee80211ac) {
8869                 int freq1 = 0, freq2 = 0;
8870                 u8 chan, opclass;
8871
8872                 if (ieee80211_freq_to_channel_ext(params.freq,
8873                                                   conf->secondary_channel,
8874                                                   conf->vht_oper_chwidth,
8875                                                   &opclass, &chan) ==
8876                     NUM_HOSTAPD_MODES) {
8877                         wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
8878                         ret = -1;
8879                         goto out;
8880                 }
8881
8882                 if (conf->vht_oper_centr_freq_seg0_idx)
8883                         freq1 = ieee80211_chan_to_freq(
8884                                 NULL, opclass,
8885                                 conf->vht_oper_centr_freq_seg0_idx);
8886
8887                 if (conf->vht_oper_centr_freq_seg1_idx)
8888                         freq2 = ieee80211_chan_to_freq(
8889                                 NULL, opclass,
8890                                 conf->vht_oper_centr_freq_seg1_idx);
8891
8892                 if (freq1 < 0 || freq2 < 0) {
8893                         wpa_dbg(wpa_s, MSG_DEBUG,
8894                                 "P2P CSA: Selected invalid VHT center freqs");
8895                         ret = -1;
8896                         goto out;
8897                 }
8898
8899                 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
8900                 csa_settings.freq_params.center_freq1 = freq1;
8901                 csa_settings.freq_params.center_freq2 = freq2;
8902
8903                 switch (conf->vht_oper_chwidth) {
8904                 case VHT_CHANWIDTH_80MHZ:
8905                 case VHT_CHANWIDTH_80P80MHZ:
8906                         csa_settings.freq_params.bandwidth = 80;
8907                         break;
8908                 case VHT_CHANWIDTH_160MHZ:
8909                         csa_settings.freq_params.bandwidth = 160;
8910                         break;
8911                 }
8912         }
8913
8914         ret = ap_switch_channel(wpa_s, &csa_settings);
8915 out:
8916         current_ssid->frequency = old_freq;
8917         hostapd_config_free(conf);
8918         return ret;
8919 }
8920
8921
8922 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8923 {
8924         struct p2p_go_neg_results params;
8925         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8926
8927         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8928
8929         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8930                 current_ssid->frequency);
8931
8932         /* Stop the AP functionality */
8933         /* TODO: Should do this in a way that does not indicated to possible
8934          * P2P Clients in the group that the group is terminated. */
8935         wpa_supplicant_ap_deinit(wpa_s);
8936
8937         /* Reselect the GO frequency */
8938         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8939                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8940                 wpas_p2p_group_delete(wpa_s,
8941                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8942                 return;
8943         }
8944         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8945                 params.freq);
8946
8947         if (params.freq &&
8948             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8949                 wpa_printf(MSG_DEBUG,
8950                            "P2P: Selected freq (%u MHz) is not valid for P2P",
8951                            params.freq);
8952                 wpas_p2p_group_delete(wpa_s,
8953                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8954                 return;
8955         }
8956
8957         /* Update the frequency */
8958         current_ssid->frequency = params.freq;
8959         wpa_s->connect_without_scan = current_ssid;
8960         wpa_s->reassociate = 1;
8961         wpa_s->disconnected = 0;
8962         wpa_supplicant_req_scan(wpa_s, 0, 0);
8963 }
8964
8965
8966 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8967 {
8968         struct wpa_supplicant *wpa_s = eloop_ctx;
8969
8970         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8971                 return;
8972
8973         wpas_p2p_go_update_common_freqs(wpa_s);
8974
8975         /* Do not move GO in the middle of a CSA */
8976         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8977                 wpa_printf(MSG_DEBUG,
8978                            "P2P: CSA is in progress - not moving GO");
8979                 return;
8980         }
8981
8982         /*
8983          * First, try a channel switch flow. If it is not supported or fails,
8984          * take down the GO and bring it up again.
8985          */
8986         if (wpas_p2p_move_go_csa(wpa_s) < 0)
8987                 wpas_p2p_move_go_no_csa(wpa_s);
8988 }
8989
8990
8991 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
8992 {
8993         struct wpa_supplicant *wpa_s = eloop_ctx;
8994         struct wpa_used_freq_data *freqs = NULL;
8995         unsigned int num = wpa_s->num_multichan_concurrent;
8996
8997         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8998         if (!freqs)
8999                 return;
9000
9001         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
9002
9003         /* Previous attempt to move a GO was not possible -- try again. */
9004         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
9005                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
9006
9007         os_free(freqs);
9008 }
9009
9010
9011 /*
9012  * Consider moving a GO from its currently used frequency:
9013  * 1. It is possible that due to regulatory consideration the frequency
9014  *    can no longer be used and there is a need to evacuate the GO.
9015  * 2. It is possible that due to MCC considerations, it would be preferable
9016  *    to move the GO to a channel that is currently used by some other
9017  *    station interface.
9018  *
9019  * In case a frequency that became invalid is once again valid, cancel a
9020  * previously initiated GO frequency change.
9021  */
9022 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
9023                                             struct wpa_used_freq_data *freqs,
9024                                             unsigned int num)
9025 {
9026         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
9027         unsigned int timeout;
9028         int freq;
9029
9030         wpas_p2p_go_update_common_freqs(wpa_s);
9031
9032         freq = wpa_s->current_ssid->frequency;
9033         for (i = 0, invalid_freq = 0; i < num; i++) {
9034                 if (freqs[i].freq == freq) {
9035                         flags = freqs[i].flags;
9036
9037                         /* The channel is invalid, must change it */
9038                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
9039                                 wpa_dbg(wpa_s, MSG_DEBUG,
9040                                         "P2P: Freq=%d MHz no longer valid for GO",
9041                                         freq);
9042                                 invalid_freq = 1;
9043                         }
9044                 } else if (freqs[i].flags == 0) {
9045                         /* Freq is not used by any other station interface */
9046                         continue;
9047                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
9048                                                freqs[i].freq)) {
9049                         /* Freq is not valid for P2P use cases */
9050                         continue;
9051                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9052                            P2P_GO_FREQ_MOVE_SCM) {
9053                         policy_move = 1;
9054                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9055                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
9056                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9057                         policy_move = 1;
9058                 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
9059                             P2P_GO_FREQ_MOVE_SCM_ECSA) &&
9060                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9061                         if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
9062                                 policy_move = 1;
9063                         } else if ((wpa_s->drv_flags &
9064                                     WPA_DRIVER_FLAGS_AP_CSA) &&
9065                                    wpas_p2p_go_clients_support_ecsa(wpa_s)) {
9066                                 u8 chan;
9067
9068                                 /*
9069                                  * We do not support CSA between bands, so move
9070                                  * GO only within the same band.
9071                                  */
9072                                 if (wpa_s->ap_iface->current_mode->mode ==
9073                                     ieee80211_freq_to_chan(freqs[i].freq,
9074                                                            &chan))
9075                                         policy_move = 1;
9076                         }
9077                 }
9078         }
9079
9080         wpa_dbg(wpa_s, MSG_DEBUG,
9081                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9082                 invalid_freq, policy_move, flags);
9083
9084         /*
9085          * The channel is valid, or we are going to have a policy move, so
9086          * cancel timeout.
9087          */
9088         if (!invalid_freq || policy_move) {
9089                 wpa_dbg(wpa_s, MSG_DEBUG,
9090                         "P2P: Cancel a GO move from freq=%d MHz", freq);
9091                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9092
9093                 if (wpas_p2p_in_progress(wpa_s)) {
9094                         wpa_dbg(wpa_s, MSG_DEBUG,
9095                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9096                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9097                                              wpa_s, NULL);
9098                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9099                                                wpas_p2p_reconsider_moving_go,
9100                                                wpa_s, NULL);
9101                         return;
9102                 }
9103         }
9104
9105         if (!invalid_freq && (!policy_move || flags != 0)) {
9106                 wpa_dbg(wpa_s, MSG_DEBUG,
9107                         "P2P: Not initiating a GO frequency change");
9108                 return;
9109         }
9110
9111         /*
9112          * Do not consider moving GO if it is in the middle of a CSA. When the
9113          * CSA is finished this flow should be retriggered.
9114          */
9115         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9116                 wpa_dbg(wpa_s, MSG_DEBUG,
9117                         "P2P: Not initiating a GO frequency change - CSA is in progress");
9118                 return;
9119         }
9120
9121         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9122                 timeout = P2P_GO_FREQ_CHANGE_TIME;
9123         else
9124                 timeout = 0;
9125
9126         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9127                 freq, timeout);
9128         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9129         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9130 }
9131
9132
9133 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9134                                          struct wpa_used_freq_data *freqs,
9135                                          unsigned int num,
9136                                          enum wpas_p2p_channel_update_trig trig)
9137 {
9138         struct wpa_supplicant *ifs;
9139
9140         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9141                              NULL);
9142
9143         /*
9144          * Travers all the radio interfaces, and for each GO interface, check
9145          * if there is a need to move the GO from the frequency it is using,
9146          * or in case the frequency is valid again, cancel the evacuation flow.
9147          */
9148         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9149                          radio_list) {
9150                 if (ifs->current_ssid == NULL ||
9151                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9152                         continue;
9153
9154                 /*
9155                  * The GO was just started or completed channel switch, no need
9156                  * to move it.
9157                  */
9158                 if (wpa_s == ifs &&
9159                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9160                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9161                         wpa_dbg(wpa_s, MSG_DEBUG,
9162                                 "P2P: GO move - schedule re-consideration");
9163                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9164                                                wpas_p2p_reconsider_moving_go,
9165                                                wpa_s, NULL);
9166                         continue;
9167                 }
9168
9169                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9170         }
9171 }
9172
9173
9174 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9175 {
9176         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9177                 return;
9178
9179         wpas_p2p_update_channel_list(wpa_s,
9180                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9181 }
9182
9183
9184 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9185 {
9186         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9187                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9188                         "the management interface is being removed");
9189                 wpas_p2p_deinit_global(wpa_s->global);
9190         }
9191 }
9192
9193
9194 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9195 {
9196         if (wpa_s->ap_iface->bss)
9197                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9198         wpas_p2p_group_deinit(wpa_s);
9199 }