contrib/wpa/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  52  * it is currently using, but is no longer valid for P2P use cases.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  57  * Defines CSA parameters which are used when GO evacuates the no longer valid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         if (wpa_s->clear_driver_scan_cache) {
 311                 wpa_printf(MSG_DEBUG,
 312                            "Request driver to clear scan cache due to local BSS flush");
 313                 params->only_new_results = 1;
 314         }
 315         ret = wpa_drv_scan(wpa_s, params);
 316         if (ret == 0)
 317                 wpa_s->curr_scan_cookie = params->scan_cookie;
 318         wpa_scan_free_params(params);
 319         work->ctx = NULL;
 320         if (ret) {
 321                 radio_work_done(work);
 322                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 323                 return;
 324         }
 325
 326         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 327         os_get_reltime(&wpa_s->scan_trigger_time);
 328         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 329         wpa_s->own_scan_requested = 1;
 330         wpa_s->clear_driver_scan_cache = 0;
 331         wpa_s->p2p_scan_work = work;
 332 }
 333
 334
 335 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 336                                           int freq)
 337 {
 338         if (wpa_s->global->p2p_24ghz_social_channels &&
 339             (freq == 2412 || freq == 2437 || freq == 2462)) {
 340                 /*
 341                  * Search all social channels regardless of whether these have
 342                  * been disabled for P2P operating channel use to avoid missing
 343                  * peers.
 344                  */
 345                 return 1;
 346         }
 347         return p2p_supported_freq(wpa_s->global->p2p, freq);
 348 }
 349
 350
 351 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 352                          unsigned int num_req_dev_types,
 353                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 354 {
 355         struct wpa_supplicant *wpa_s = ctx;
 356         struct wpa_driver_scan_params *params = NULL;
 357         struct wpabuf *wps_ie, *ies;
 358         unsigned int num_channels = 0;
 359         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 360         size_t ielen;
 361         u8 *n, i;
 362         unsigned int bands;
 363
 364         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 365                 return -1;
 366
 367         if (wpa_s->p2p_scan_work) {
 368                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 369                 return -1;
 370         }
 371
 372         params = os_zalloc(sizeof(*params));
 373         if (params == NULL)
 374                 return -1;
 375
 376         /* P2P Wildcard SSID */
 377         params->num_ssids = 1;
 378         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 379         if (n == NULL)
 380                 goto fail;
 381         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 382         params->ssids[0].ssid = n;
 383         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 384
 385         wpa_s->wps->dev.p2p = 1;
 386         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 387                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 388                                         num_req_dev_types, req_dev_types);
 389         if (wps_ie == NULL)
 390                 goto fail;
 391
 392         switch (type) {
 393         case P2P_SCAN_SOCIAL:
 394                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 395                                           sizeof(int));
 396                 if (params->freqs == NULL)
 397                         goto fail;
 398                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 399                         if (wpas_p2p_search_social_channel(
 400                                     wpa_s, social_channels_freq[i]))
 401                                 params->freqs[num_channels++] =
 402                                         social_channels_freq[i];
 403                 }
 404                 params->freqs[num_channels++] = 0;
 405                 break;
 406         case P2P_SCAN_FULL:
 407                 break;
 408         case P2P_SCAN_SPECIFIC:
 409                 params->freqs = os_calloc(2, sizeof(int));
 410                 if (params->freqs == NULL)
 411                         goto fail;
 412                 params->freqs[0] = freq;
 413                 params->freqs[1] = 0;
 414                 break;
 415         case P2P_SCAN_SOCIAL_PLUS_ONE:
 416                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 417                                           sizeof(int));
 418                 if (params->freqs == NULL)
 419                         goto fail;
 420                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 421                         if (wpas_p2p_search_social_channel(
 422                                     wpa_s, social_channels_freq[i]))
 423                                 params->freqs[num_channels++] =
 424                                         social_channels_freq[i];
 425                 }
 426                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 427                         params->freqs[num_channels++] = freq;
 428                 params->freqs[num_channels++] = 0;
 429                 break;
 430         }
 431
 432         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 433         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 434         if (ies == NULL) {
 435                 wpabuf_free(wps_ie);
 436                 goto fail;
 437         }
 438         wpabuf_put_buf(ies, wps_ie);
 439         wpabuf_free(wps_ie);
 440
 441         bands = wpas_get_bands(wpa_s, params->freqs);
 442         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id, bands);
 443
 444         params->p2p_probe = 1;
 445         n = os_malloc(wpabuf_len(ies));
 446         if (n == NULL) {
 447                 wpabuf_free(ies);
 448                 goto fail;
 449         }
 450         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 451         params->extra_ies = n;
 452         params->extra_ies_len = wpabuf_len(ies);
 453         wpabuf_free(ies);
 454
 455         radio_remove_works(wpa_s, "p2p-scan", 0);
 456         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 457                            params) < 0)
 458                 goto fail;
 459         return 0;
 460
 461 fail:
 462         wpa_scan_free_params(params);
 463         return -1;
 464 }
 465
 466
 467 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 468 {
 469         switch (p2p_group_interface) {
 470         case P2P_GROUP_INTERFACE_PENDING:
 471                 return WPA_IF_P2P_GROUP;
 472         case P2P_GROUP_INTERFACE_GO:
 473                 return WPA_IF_P2P_GO;
 474         case P2P_GROUP_INTERFACE_CLIENT:
 475                 return WPA_IF_P2P_CLIENT;
 476         }
 477
 478         return WPA_IF_P2P_GROUP;
 479 }
 480
 481
 482 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 483                                                   const u8 *ssid,
 484                                                   size_t ssid_len, int *go)
 485 {
 486         struct wpa_ssid *s;
 487
 488         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 489                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 490                         if (s->disabled != 0 || !s->p2p_group ||
 491                             s->ssid_len != ssid_len ||
 492                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 493                                 continue;
 494                         if (s->mode == WPAS_MODE_P2P_GO &&
 495                             s != wpa_s->current_ssid)
 496                                 continue;
 497                         if (go)
 498                                 *go = s->mode == WPAS_MODE_P2P_GO;
 499                         return wpa_s;
 500                 }
 501         }
 502
 503         return NULL;
 504 }
 505
 506
 507 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 508 {
 509         struct wpa_supplicant *wpa_s = eloop_ctx;
 510         wpa_printf(MSG_DEBUG,
 511                    "P2P: Complete previously requested removal of %s",
 512                    wpa_s->ifname);
 513         wpas_p2p_disconnect(wpa_s);
 514 }
 515
 516
 517 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 518                                       struct wpa_supplicant *calling_wpa_s)
 519 {
 520         if (calling_wpa_s == wpa_s && wpa_s &&
 521             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 522                 /*
 523                  * The calling wpa_s instance is going to be removed. Do that
 524                  * from an eloop callback to keep the instance available until
 525                  * the caller has returned. This my be needed, e.g., to provide
 526                  * control interface responses on the per-interface socket.
 527                  */
 528                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 529                                            wpa_s, NULL) < 0)
 530                         return -1;
 531                 return 0;
 532         }
 533
 534         return wpas_p2p_disconnect(wpa_s);
 535 }
 536
 537
 538 /* Determine total number of clients in active groups where we are the GO */
 539 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 540 {
 541         unsigned int count = 0;
 542         struct wpa_ssid *s;
 543
 544         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 545                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 546                         wpa_printf(MSG_DEBUG,
 547                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 548                                    wpa_s, s, s->disabled, s->p2p_group,
 549                                    s->mode);
 550                         if (!s->disabled && s->p2p_group &&
 551                             s->mode == WPAS_MODE_P2P_GO) {
 552                                 count += p2p_get_group_num_members(
 553                                         wpa_s->p2p_group);
 554                         }
 555                 }
 556         }
 557
 558         return count;
 559 }
 560
 561
 562 static unsigned int p2p_is_active_persistent_group(struct wpa_supplicant *wpa_s)
 563 {
 564         return !wpa_s->p2p_mgmt && wpa_s->current_ssid &&
 565                 !wpa_s->current_ssid->disabled &&
 566                 wpa_s->current_ssid->p2p_group &&
 567                 wpa_s->current_ssid->p2p_persistent_group;
 568 }
 569
 570
 571 static unsigned int p2p_is_active_persistent_go(struct wpa_supplicant *wpa_s)
 572 {
 573         return p2p_is_active_persistent_group(wpa_s) &&
 574                 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO;
 575 }
 576
 577
 578 /* Find an interface for a P2P group where we are the GO */
 579 static struct wpa_supplicant *
 580 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 581 {
 582         struct wpa_supplicant *save = NULL;
 583
 584         if (!wpa_s)
 585                 return NULL;
 586
 587         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 588                 if (!p2p_is_active_persistent_go(wpa_s))
 589                         continue;
 590
 591                 /* Prefer a group with connected clients */
 592                 if (p2p_get_group_num_members(wpa_s->p2p_group))
 593                         return wpa_s;
 594                 save = wpa_s;
 595         }
 596
 597         /* No group with connected clients, so pick the one without (if any) */
 598         return save;
 599 }
 600
 601
 602 static unsigned int p2p_is_active_persistent_cli(struct wpa_supplicant *wpa_s)
 603 {
 604         return p2p_is_active_persistent_group(wpa_s) &&
 605                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
 606 }
 607
 608
 609 /* Find an interface for a P2P group where we are the P2P Client */
 610 static struct wpa_supplicant *
 611 wpas_p2p_get_cli_group(struct wpa_supplicant *wpa_s)
 612 {
 613         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 614                 if (p2p_is_active_persistent_cli(wpa_s))
 615                         return wpa_s;
 616         }
 617
 618         return NULL;
 619 }
 620
 621
 622 /* Find a persistent group where we are the GO */
 623 static struct wpa_ssid *
 624 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
 625 {
 626         struct wpa_ssid *s;
 627
 628         for (s = wpa_s->conf->ssid; s; s = s->next) {
 629                 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
 630                         return s;
 631         }
 632
 633         return NULL;
 634 }
 635
 636
 637 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role,
 638                                 unsigned int *force_freq,
 639                                 unsigned int *pref_freq)
 640 {
 641         struct wpa_supplicant *wpa_s = ctx;
 642         struct wpa_ssid *s;
 643         u8 conncap = P2PS_SETUP_NONE;
 644         unsigned int owned_members = 0;
 645         struct wpa_supplicant *go_wpa_s, *cli_wpa_s;
 646         struct wpa_ssid *persistent_go;
 647         int p2p_no_group_iface;
 648         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
 649
 650         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 651
 652         if (force_freq)
 653                 *force_freq = 0;
 654         if (pref_freq)
 655                 *pref_freq = 0;
 656
 657         size = P2P_MAX_PREF_CHANNELS;
 658         if (force_freq && pref_freq &&
 659             !wpas_p2p_setup_freqs(wpa_s, 0, (int *) force_freq,
 660                                   (int *) pref_freq, 0, pref_freq_list, &size))
 661                 wpas_p2p_set_own_freq_preference(wpa_s,
 662                                                  *force_freq ? *force_freq :
 663                                                  *pref_freq);
 664
 665         /*
 666          * For non-concurrent capable devices:
 667          * If persistent_go, then no new.
 668          * If GO, then no client.
 669          * If client, then no GO.
 670          */
 671         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 672         if (go_wpa_s)
 673                 owned_members = p2p_get_group_num_members(go_wpa_s->p2p_group);
 674         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 675         p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s);
 676         cli_wpa_s = wpas_p2p_get_cli_group(wpa_s);
 677
 678         wpa_printf(MSG_DEBUG,
 679                    "P2P: GO(iface)=%p members=%u CLI(iface)=%p persistent(ssid)=%p",
 680                    go_wpa_s, owned_members, cli_wpa_s, persistent_go);
 681
 682         /* If not concurrent, restrict our choices */
 683         if (p2p_no_group_iface) {
 684                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 685
 686                 if (cli_wpa_s)
 687                         return P2PS_SETUP_NONE;
 688
 689                 if (go_wpa_s) {
 690                         if (role == P2PS_SETUP_CLIENT ||
 691                             incoming == P2PS_SETUP_GROUP_OWNER ||
 692                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 693                                 return P2PS_SETUP_NONE;
 694
 695                         return P2PS_SETUP_GROUP_OWNER;
 696                 }
 697
 698                 if (persistent_go) {
 699                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 700                                 if (!incoming)
 701                                         return P2PS_SETUP_GROUP_OWNER |
 702                                                 P2PS_SETUP_CLIENT;
 703                                 if (incoming == P2PS_SETUP_NEW) {
 704                                         u8 r;
 705
 706                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 707                                             (r & 1))
 708                                                 return P2PS_SETUP_CLIENT;
 709                                         return P2PS_SETUP_GROUP_OWNER;
 710                                 }
 711                         }
 712                 }
 713         }
 714
 715         /* If a required role has been specified, handle it here */
 716         if (role && role != P2PS_SETUP_NEW) {
 717                 switch (incoming) {
 718                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 719                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 720                         /*
 721                          * Peer has an active GO, so if the role allows it and
 722                          * we do not have any active roles, become client.
 723                          */
 724                         if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s &&
 725                             !cli_wpa_s)
 726                                 return P2PS_SETUP_CLIENT;
 727
 728                         /* fall through */
 729
 730                 case P2PS_SETUP_NONE:
 731                 case P2PS_SETUP_NEW:
 732                         conncap = role;
 733                         goto grp_owner;
 734
 735                 case P2PS_SETUP_GROUP_OWNER:
 736                         /*
 737                          * Must be a complimentary role - cannot be a client to
 738                          * more than one peer.
 739                          */
 740                         if (incoming == role || cli_wpa_s)
 741                                 return P2PS_SETUP_NONE;
 742
 743                         return P2PS_SETUP_CLIENT;
 744
 745                 case P2PS_SETUP_CLIENT:
 746                         /* Must be a complimentary role */
 747                         if (incoming != role) {
 748                                 conncap = P2PS_SETUP_GROUP_OWNER;
 749                                 goto grp_owner;
 750                         }
 751                         /* fall through */
 752
 753                 default:
 754                         return P2PS_SETUP_NONE;
 755                 }
 756         }
 757
 758         /*
 759          * For now, we only will support ownership of one group, and being a
 760          * client of one group. Therefore, if we have either an existing GO
 761          * group, or an existing client group, we will not do a new GO
 762          * negotiation, but rather try to re-use the existing groups.
 763          */
 764         switch (incoming) {
 765         case P2PS_SETUP_NONE:
 766         case P2PS_SETUP_NEW:
 767                 if (cli_wpa_s)
 768                         conncap = P2PS_SETUP_GROUP_OWNER;
 769                 else if (!owned_members)
 770                         conncap = P2PS_SETUP_NEW;
 771                 else if (incoming == P2PS_SETUP_NONE)
 772                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 773                 else
 774                         conncap = P2PS_SETUP_CLIENT;
 775                 break;
 776
 777         case P2PS_SETUP_CLIENT:
 778                 conncap = P2PS_SETUP_GROUP_OWNER;
 779                 break;
 780
 781         case P2PS_SETUP_GROUP_OWNER:
 782                 if (!cli_wpa_s)
 783                         conncap = P2PS_SETUP_CLIENT;
 784                 break;
 785
 786         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 787         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 788                 if (cli_wpa_s)
 789                         conncap = P2PS_SETUP_GROUP_OWNER;
 790                 else {
 791                         u8 r;
 792
 793                         if (os_get_random(&r, sizeof(r)) < 0 ||
 794                             (r & 1))
 795                                 conncap = P2PS_SETUP_CLIENT;
 796                         else
 797                                 conncap = P2PS_SETUP_GROUP_OWNER;
 798                 }
 799                 break;
 800
 801         default:
 802                 return P2PS_SETUP_NONE;
 803         }
 804
 805 grp_owner:
 806         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 807             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 808                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 809                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 810
 811                 s = wpas_p2p_get_persistent_go(wpa_s);
 812                 if (!s && !go_wpa_s && p2p_no_group_iface) {
 813                         p2p_set_intended_addr(wpa_s->global->p2p,
 814                                               wpa_s->p2p_mgmt ?
 815                                               wpa_s->parent->own_addr :
 816                                               wpa_s->own_addr);
 817                 } else if (!s && !go_wpa_s) {
 818                         if (wpas_p2p_add_group_interface(wpa_s,
 819                                                          WPA_IF_P2P_GROUP) < 0) {
 820                                 wpa_printf(MSG_ERROR,
 821                                            "P2P: Failed to allocate a new interface for the group");
 822                                 return P2PS_SETUP_NONE;
 823                         }
 824                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 825                         p2p_set_intended_addr(wpa_s->global->p2p,
 826                                               wpa_s->pending_interface_addr);
 827                 }
 828         }
 829
 830         return conncap;
 831 }
 832
 833
 834 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 835                                  enum p2p_group_removal_reason removal_reason)
 836 {
 837         struct wpa_ssid *ssid;
 838         char *gtype;
 839         const char *reason;
 840
 841         ssid = wpa_s->current_ssid;
 842         if (ssid == NULL) {
 843                 /*
 844                  * The current SSID was not known, but there may still be a
 845                  * pending P2P group interface waiting for provisioning or a
 846                  * P2P group that is trying to reconnect.
 847                  */
 848                 ssid = wpa_s->conf->ssid;
 849                 while (ssid) {
 850                         if (ssid->p2p_group && ssid->disabled != 2)
 851                                 break;
 852                         ssid = ssid->next;
 853                 }
 854                 if (ssid == NULL &&
 855                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 856                 {
 857                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 858                                    "not found");
 859                         return -1;
 860                 }
 861         }
 862         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 863                 gtype = "GO";
 864         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 865                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 866                 wpa_s->reassociate = 0;
 867                 wpa_s->disconnected = 1;
 868                 gtype = "client";
 869         } else
 870                 gtype = "GO";
 871
 872         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 873                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 874
 875         if (os_strcmp(gtype, "client") == 0) {
 876                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 877                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 878                                                 wpa_s, NULL)) {
 879                         wpa_printf(MSG_DEBUG,
 880                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 881                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 882                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 883                                              wpa_s, NULL);
 884                 }
 885         }
 886
 887         if (wpa_s->cross_connect_in_use) {
 888                 wpa_s->cross_connect_in_use = 0;
 889                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
 890                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 891                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 892         }
 893         switch (removal_reason) {
 894         case P2P_GROUP_REMOVAL_REQUESTED:
 895                 reason = " reason=REQUESTED";
 896                 break;
 897         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 898                 reason = " reason=FORMATION_FAILED";
 899                 break;
 900         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 901                 reason = " reason=IDLE";
 902                 break;
 903         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 904                 reason = " reason=UNAVAILABLE";
 905                 break;
 906         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 907                 reason = " reason=GO_ENDING_SESSION";
 908                 break;
 909         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 910                 reason = " reason=PSK_FAILURE";
 911                 break;
 912         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 913                 reason = " reason=FREQ_CONFLICT";
 914                 break;
 915         default:
 916                 reason = "";
 917                 break;
 918         }
 919         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 920                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
 921                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 922                                wpa_s->ifname, gtype, reason);
 923         }
 924
 925         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 926                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 927         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 928                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 929         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 930                                  wpa_s->p2pdev, NULL) > 0) {
 931                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 932                            "timeout");
 933                 wpa_s->p2p_in_provisioning = 0;
 934                 wpas_p2p_group_formation_failed(wpa_s, 1);
 935         }
 936
 937         wpa_s->p2p_in_invitation = 0;
 938         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
 939         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
 940
 941         /*
 942          * Make sure wait for the first client does not remain active after the
 943          * group has been removed.
 944          */
 945         wpa_s->global->p2p_go_wait_client.sec = 0;
 946
 947         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 948                 struct wpa_global *global;
 949                 char *ifname;
 950                 enum wpa_driver_if_type type;
 951                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 952                         wpa_s->ifname);
 953                 global = wpa_s->global;
 954                 ifname = os_strdup(wpa_s->ifname);
 955                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 956                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 957                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 958                 wpa_s = global->ifaces;
 959                 if (wpa_s && ifname)
 960                         wpa_drv_if_remove(wpa_s, type, ifname);
 961                 os_free(ifname);
 962                 return 1;
 963         }
 964
 965         /*
 966          * The primary interface was used for P2P group operations, so
 967          * need to reset its p2pdev.
 968          */
 969         wpa_s->p2pdev = wpa_s->parent;
 970
 971         if (!wpa_s->p2p_go_group_formation_completed) {
 972                 wpa_s->global->p2p_group_formation = NULL;
 973                 wpa_s->p2p_in_provisioning = 0;
 974         }
 975
 976         wpa_s->show_group_started = 0;
 977         os_free(wpa_s->go_params);
 978         wpa_s->go_params = NULL;
 979
 980         os_free(wpa_s->p2p_group_common_freqs);
 981         wpa_s->p2p_group_common_freqs = NULL;
 982         wpa_s->p2p_group_common_freqs_num = 0;
 983         wpa_s->p2p_go_do_acs = 0;
 984
 985         wpa_s->waiting_presence_resp = 0;
 986
 987         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 988         if (ssid && (ssid->p2p_group ||
 989                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 990                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 991                 int id = ssid->id;
 992                 if (ssid == wpa_s->current_ssid) {
 993                         wpa_sm_set_config(wpa_s->wpa, NULL);
 994                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 995                         wpa_s->current_ssid = NULL;
 996                 }
 997                 /*
 998                  * Networks objects created during any P2P activities are not
 999                  * exposed out as they might/will confuse certain non-P2P aware
1000                  * applications since these network objects won't behave like
1001                  * regular ones.
1002                  *
1003                  * Likewise, we don't send out network removed signals for such
1004                  * network objects.
1005                  */
1006                 wpa_config_remove_network(wpa_s->conf, id);
1007                 wpa_supplicant_clear_status(wpa_s);
1008                 wpa_supplicant_cancel_sched_scan(wpa_s);
1009         } else {
1010                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
1011                            "found");
1012         }
1013         if (wpa_s->ap_iface)
1014                 wpa_supplicant_ap_deinit(wpa_s);
1015         else
1016                 wpa_drv_deinit_p2p_cli(wpa_s);
1017
1018         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1019
1020         return 0;
1021 }
1022
1023
1024 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
1025                                      u8 *go_dev_addr,
1026                                      const u8 *ssid, size_t ssid_len)
1027 {
1028         struct wpa_bss *bss;
1029         const u8 *bssid;
1030         struct wpabuf *p2p;
1031         u8 group_capab;
1032         const u8 *addr;
1033
1034         if (wpa_s->go_params)
1035                 bssid = wpa_s->go_params->peer_interface_addr;
1036         else
1037                 bssid = wpa_s->bssid;
1038
1039         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
1040         if (bss == NULL && wpa_s->go_params &&
1041             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
1042                 bss = wpa_bss_get_p2p_dev_addr(
1043                         wpa_s, wpa_s->go_params->peer_device_addr);
1044         if (bss == NULL) {
1045                 u8 iface_addr[ETH_ALEN];
1046                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1047                                            iface_addr) == 0)
1048                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1049         }
1050         if (bss == NULL) {
1051                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1052                            "group is persistent - BSS " MACSTR " not found",
1053                            MAC2STR(bssid));
1054                 return 0;
1055         }
1056
1057         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1058         if (p2p == NULL)
1059                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1060                                                          P2P_IE_VENDOR_TYPE);
1061         if (p2p == NULL) {
1062                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1063                            "group is persistent - BSS " MACSTR
1064                            " did not include P2P IE", MAC2STR(bssid));
1065                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1066                             (u8 *) (bss + 1), bss->ie_len);
1067                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1068                             ((u8 *) bss + 1) + bss->ie_len,
1069                             bss->beacon_ie_len);
1070                 return 0;
1071         }
1072
1073         group_capab = p2p_get_group_capab(p2p);
1074         addr = p2p_get_go_dev_addr(p2p);
1075         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1076                    "group_capab=0x%x", group_capab);
1077         if (addr) {
1078                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1079                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1080                            MAC2STR(addr));
1081         } else
1082                 os_memset(go_dev_addr, 0, ETH_ALEN);
1083         wpabuf_free(p2p);
1084
1085         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1086                    "go_dev_addr=" MACSTR,
1087                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1088
1089         return !!(group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP);
1090 }
1091
1092
1093 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1094                                            struct wpa_ssid *ssid,
1095                                            const u8 *go_dev_addr)
1096 {
1097         struct wpa_ssid *s;
1098         int changed = 0;
1099
1100         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1101                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1102         for (s = wpa_s->conf->ssid; s; s = s->next) {
1103                 if (s->disabled == 2 &&
1104                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1105                     s->ssid_len == ssid->ssid_len &&
1106                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1107                         break;
1108         }
1109
1110         if (s) {
1111                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1112                            "entry");
1113                 if (ssid->passphrase && !s->passphrase)
1114                         changed = 1;
1115                 else if (ssid->passphrase && s->passphrase &&
1116                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1117                         changed = 1;
1118         } else {
1119                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1120                            "entry");
1121                 changed = 1;
1122                 s = wpa_config_add_network(wpa_s->conf);
1123                 if (s == NULL)
1124                         return -1;
1125
1126                 /*
1127                  * Instead of network_added we emit persistent_group_added
1128                  * notification. Also to keep the defense checks in
1129                  * persistent_group obj registration method, we set the
1130                  * relevant flags in s to designate it as a persistent group.
1131                  */
1132                 s->p2p_group = 1;
1133                 s->p2p_persistent_group = 1;
1134                 wpas_notify_persistent_group_added(wpa_s, s);
1135                 wpa_config_set_network_defaults(s);
1136         }
1137
1138         s->p2p_group = 1;
1139         s->p2p_persistent_group = 1;
1140         s->disabled = 2;
1141         s->bssid_set = 1;
1142         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1143         s->mode = ssid->mode;
1144         s->auth_alg = WPA_AUTH_ALG_OPEN;
1145         s->key_mgmt = WPA_KEY_MGMT_PSK;
1146         s->proto = WPA_PROTO_RSN;
1147         s->pbss = ssid->pbss;
1148         s->pairwise_cipher = ssid->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP;
1149         s->export_keys = 1;
1150         if (ssid->passphrase) {
1151                 os_free(s->passphrase);
1152                 s->passphrase = os_strdup(ssid->passphrase);
1153         }
1154         if (ssid->psk_set) {
1155                 s->psk_set = 1;
1156                 os_memcpy(s->psk, ssid->psk, 32);
1157         }
1158         if (s->passphrase && !s->psk_set)
1159                 wpa_config_update_psk(s);
1160         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1161                 os_free(s->ssid);
1162                 s->ssid = os_malloc(ssid->ssid_len);
1163         }
1164         if (s->ssid) {
1165                 s->ssid_len = ssid->ssid_len;
1166                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1167         }
1168         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1169                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1170                 wpa_s->global->add_psk = NULL;
1171                 changed = 1;
1172         }
1173
1174         if (changed && wpa_s->conf->update_config &&
1175             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1176                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1177         }
1178
1179         return s->id;
1180 }
1181
1182
1183 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1184                                                  const u8 *addr)
1185 {
1186         struct wpa_ssid *ssid, *s;
1187         u8 *n;
1188         size_t i;
1189         int found = 0;
1190         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1191
1192         ssid = wpa_s->current_ssid;
1193         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1194             !ssid->p2p_persistent_group)
1195                 return;
1196
1197         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1198                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1199                         continue;
1200
1201                 if (s->ssid_len == ssid->ssid_len &&
1202                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1203                         break;
1204         }
1205
1206         if (s == NULL)
1207                 return;
1208
1209         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1210                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1211                               ETH_ALEN) != 0)
1212                         continue;
1213
1214                 if (i == s->num_p2p_clients - 1)
1215                         return; /* already the most recent entry */
1216
1217                 /* move the entry to mark it most recent */
1218                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1219                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1220                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1221                 os_memcpy(s->p2p_client_list +
1222                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1223                           ETH_ALEN);
1224                 os_memset(s->p2p_client_list +
1225                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1226                           0xff, ETH_ALEN);
1227                 found = 1;
1228                 break;
1229         }
1230
1231         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1232                 n = os_realloc_array(s->p2p_client_list,
1233                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1234                 if (n == NULL)
1235                         return;
1236                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1237                           ETH_ALEN);
1238                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1239                           0xff, ETH_ALEN);
1240                 s->p2p_client_list = n;
1241                 s->num_p2p_clients++;
1242         } else if (!found && s->p2p_client_list) {
1243                 /* Not enough room for an additional entry - drop the oldest
1244                  * entry */
1245                 os_memmove(s->p2p_client_list,
1246                            s->p2p_client_list + 2 * ETH_ALEN,
1247                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1248                 os_memcpy(s->p2p_client_list +
1249                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1250                           addr, ETH_ALEN);
1251                 os_memset(s->p2p_client_list +
1252                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1253                           0xff, ETH_ALEN);
1254         }
1255
1256         if (p2p_wpa_s->conf->update_config &&
1257             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1258                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1259 }
1260
1261
1262 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1263                                    int go, struct wpa_ssid *ssid, int freq,
1264                                    const u8 *psk, const char *passphrase,
1265                                    const u8 *go_dev_addr, int persistent,
1266                                    const char *extra)
1267 {
1268         const char *ssid_txt;
1269         char psk_txt[65];
1270
1271         if (psk)
1272                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1273         else
1274                 psk_txt[0] = '\0';
1275
1276         if (ssid)
1277                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1278         else
1279                 ssid_txt = "";
1280
1281         if (passphrase && passphrase[0] == '\0')
1282                 passphrase = NULL;
1283
1284         /*
1285          * Include PSK/passphrase only in the control interface message and
1286          * leave it out from the debug log entry.
1287          */
1288         wpa_msg_global_ctrl(wpa_s->p2pdev, MSG_INFO,
1289                             P2P_EVENT_GROUP_STARTED
1290                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1291                             MACSTR "%s%s",
1292                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1293                             psk ? " psk=" : "", psk_txt,
1294                             passphrase ? " passphrase=\"" : "",
1295                             passphrase ? passphrase : "",
1296                             passphrase ? "\"" : "",
1297                             MAC2STR(go_dev_addr),
1298                             persistent ? " [PERSISTENT]" : "", extra);
1299         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1300                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1301                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1302                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1303                    extra);
1304 }
1305
1306
1307 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1308                                            int success, int already_deleted)
1309 {
1310         struct wpa_ssid *ssid;
1311         int client;
1312         int persistent;
1313         u8 go_dev_addr[ETH_ALEN];
1314
1315         /*
1316          * This callback is likely called for the main interface. Update wpa_s
1317          * to use the group interface if a new interface was created for the
1318          * group.
1319          */
1320         if (wpa_s->global->p2p_group_formation)
1321                 wpa_s = wpa_s->global->p2p_group_formation;
1322         if (wpa_s->p2p_go_group_formation_completed) {
1323                 wpa_s->global->p2p_group_formation = NULL;
1324                 wpa_s->p2p_in_provisioning = 0;
1325         } else if (wpa_s->p2p_in_provisioning && !success) {
1326                 wpa_msg(wpa_s, MSG_DEBUG,
1327                         "P2P: Stop provisioning state due to failure");
1328                 wpa_s->p2p_in_provisioning = 0;
1329         }
1330         wpa_s->p2p_in_invitation = 0;
1331         wpa_s->group_formation_reported = 1;
1332
1333         if (!success) {
1334                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1335                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1336                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1337                 if (already_deleted)
1338                         return;
1339                 wpas_p2p_group_delete(wpa_s,
1340                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1341                 return;
1342         }
1343
1344         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1345                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1346
1347         ssid = wpa_s->current_ssid;
1348         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1349                 ssid->mode = WPAS_MODE_P2P_GO;
1350                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1351                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1352         }
1353
1354         persistent = 0;
1355         if (ssid) {
1356                 client = ssid->mode == WPAS_MODE_INFRA;
1357                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1358                         persistent = ssid->p2p_persistent_group;
1359                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1360                                   ETH_ALEN);
1361                 } else
1362                         persistent = wpas_p2p_persistent_group(wpa_s,
1363                                                                go_dev_addr,
1364                                                                ssid->ssid,
1365                                                                ssid->ssid_len);
1366         } else {
1367                 client = wpa_s->p2p_group_interface ==
1368                         P2P_GROUP_INTERFACE_CLIENT;
1369                 os_memset(go_dev_addr, 0, ETH_ALEN);
1370         }
1371
1372         wpa_s->show_group_started = 0;
1373         if (client) {
1374                 /*
1375                  * Indicate event only after successfully completed 4-way
1376                  * handshake, i.e., when the interface is ready for data
1377                  * packets.
1378                  */
1379                 wpa_s->show_group_started = 1;
1380         } else {
1381                 wpas_p2p_group_started(wpa_s, 1, ssid,
1382                                        ssid ? ssid->frequency : 0,
1383                                        ssid && ssid->passphrase == NULL &&
1384                                        ssid->psk_set ? ssid->psk : NULL,
1385                                        ssid ? ssid->passphrase : NULL,
1386                                        go_dev_addr, persistent, "");
1387                 wpas_p2p_cross_connect_setup(wpa_s);
1388                 wpas_p2p_set_group_idle_timeout(wpa_s);
1389         }
1390
1391         if (persistent)
1392                 wpas_p2p_store_persistent_group(wpa_s->p2pdev,
1393                                                 ssid, go_dev_addr);
1394         else {
1395                 os_free(wpa_s->global->add_psk);
1396                 wpa_s->global->add_psk = NULL;
1397         }
1398
1399         if (!client) {
1400                 wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 0, NULL);
1401                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1402         }
1403 }
1404
1405
1406 struct send_action_work {
1407         unsigned int freq;
1408         u8 dst[ETH_ALEN];
1409         u8 src[ETH_ALEN];
1410         u8 bssid[ETH_ALEN];
1411         size_t len;
1412         unsigned int wait_time;
1413         u8 buf[0];
1414 };
1415
1416
1417 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s)
1418 {
1419         struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx;
1420
1421         wpa_printf(MSG_DEBUG,
1422                    "P2P: Free Action frame radio work @%p (freq=%u dst="
1423                    MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)",
1424                    wpa_s->p2p_send_action_work, awork->freq,
1425                    MAC2STR(awork->dst), MAC2STR(awork->src),
1426                    MAC2STR(awork->bssid), awork->wait_time);
1427         wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame",
1428                     awork->buf, awork->len);
1429         os_free(awork);
1430         wpa_s->p2p_send_action_work->ctx = NULL;
1431         radio_work_done(wpa_s->p2p_send_action_work);
1432         wpa_s->p2p_send_action_work = NULL;
1433 }
1434
1435
1436 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1437                                               void *timeout_ctx)
1438 {
1439         struct wpa_supplicant *wpa_s = eloop_ctx;
1440
1441         if (!wpa_s->p2p_send_action_work)
1442                 return;
1443
1444         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1445         wpas_p2p_free_send_action_work(wpa_s);
1446 }
1447
1448
1449 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1450 {
1451         if (wpa_s->p2p_send_action_work) {
1452                 struct send_action_work *awork;
1453
1454                 awork = wpa_s->p2p_send_action_work->ctx;
1455                 wpa_printf(MSG_DEBUG,
1456                            "P2P: Clear Action TX work @%p (wait_time=%u)",
1457                            wpa_s->p2p_send_action_work, awork->wait_time);
1458                 if (awork->wait_time == 0) {
1459                         wpas_p2p_free_send_action_work(wpa_s);
1460                 } else {
1461                         /*
1462                          * In theory, this should not be needed, but number of
1463                          * places in the P2P code is still using non-zero wait
1464                          * time for the last Action frame in the sequence and
1465                          * some of these do not call send_action_done().
1466                          */
1467                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1468                                              wpa_s, NULL);
1469                         eloop_register_timeout(
1470                                 0, awork->wait_time * 1000,
1471                                 wpas_p2p_send_action_work_timeout,
1472                                 wpa_s, NULL);
1473                 }
1474         }
1475 }
1476
1477
1478 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1479                                            unsigned int freq,
1480                                            const u8 *dst, const u8 *src,
1481                                            const u8 *bssid,
1482                                            const u8 *data, size_t data_len,
1483                                            enum offchannel_send_action_result
1484                                            result)
1485 {
1486         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1487
1488         wpas_p2p_action_tx_clear(wpa_s);
1489
1490         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1491                 return;
1492
1493         switch (result) {
1494         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1495                 res = P2P_SEND_ACTION_SUCCESS;
1496                 break;
1497         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1498                 res = P2P_SEND_ACTION_NO_ACK;
1499                 break;
1500         case OFFCHANNEL_SEND_ACTION_FAILED:
1501                 res = P2P_SEND_ACTION_FAILED;
1502                 break;
1503         }
1504
1505         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1506
1507         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1508             wpa_s->pending_pd_before_join &&
1509             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1510              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1511             wpa_s->p2p_fallback_to_go_neg) {
1512                 wpa_s->pending_pd_before_join = 0;
1513                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1514                         "during p2p_connect-auto");
1515                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1516                                P2P_EVENT_FALLBACK_TO_GO_NEG
1517                                "reason=no-ACK-to-PD-Req");
1518                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1519                 return;
1520         }
1521 }
1522
1523
1524 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1525 {
1526         struct wpa_supplicant *wpa_s = work->wpa_s;
1527         struct send_action_work *awork = work->ctx;
1528
1529         if (deinit) {
1530                 if (work->started) {
1531                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1532                                              wpa_s, NULL);
1533                         wpa_s->p2p_send_action_work = NULL;
1534                         offchannel_send_action_done(wpa_s);
1535                 }
1536                 os_free(awork);
1537                 return;
1538         }
1539
1540         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1541                                    awork->bssid, awork->buf, awork->len,
1542                                    awork->wait_time,
1543                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1544                 os_free(awork);
1545                 radio_work_done(work);
1546                 return;
1547         }
1548         wpa_s->p2p_send_action_work = work;
1549 }
1550
1551
1552 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1553                                  unsigned int freq, const u8 *dst,
1554                                  const u8 *src, const u8 *bssid, const u8 *buf,
1555                                  size_t len, unsigned int wait_time)
1556 {
1557         struct send_action_work *awork;
1558
1559         if (wpa_s->p2p_send_action_work) {
1560                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1561                 return -1;
1562         }
1563
1564         awork = os_zalloc(sizeof(*awork) + len);
1565         if (awork == NULL)
1566                 return -1;
1567
1568         awork->freq = freq;
1569         os_memcpy(awork->dst, dst, ETH_ALEN);
1570         os_memcpy(awork->src, src, ETH_ALEN);
1571         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1572         awork->len = len;
1573         awork->wait_time = wait_time;
1574         os_memcpy(awork->buf, buf, len);
1575
1576         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1577                            wpas_send_action_cb, awork) < 0) {
1578                 os_free(awork);
1579                 return -1;
1580         }
1581
1582         return 0;
1583 }
1584
1585
1586 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1587                             const u8 *src, const u8 *bssid, const u8 *buf,
1588                             size_t len, unsigned int wait_time, int *scheduled)
1589 {
1590         struct wpa_supplicant *wpa_s = ctx;
1591         int listen_freq = -1, send_freq = -1;
1592
1593         if (scheduled)
1594                 *scheduled = 0;
1595         if (wpa_s->p2p_listen_work)
1596                 listen_freq = wpa_s->p2p_listen_work->freq;
1597         if (wpa_s->p2p_send_action_work)
1598                 send_freq = wpa_s->p2p_send_action_work->freq;
1599         if (listen_freq != (int) freq && send_freq != (int) freq) {
1600                 int res;
1601
1602                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d freq=%u)",
1603                            listen_freq, send_freq, freq);
1604                 res = wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1605                                             len, wait_time);
1606                 if (res == 0 && scheduled)
1607                         *scheduled = 1;
1608                 return res;
1609         }
1610
1611         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1612         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1613                                       wait_time,
1614                                       wpas_p2p_send_action_tx_status, 1);
1615 }
1616
1617
1618 static void wpas_send_action_done(void *ctx)
1619 {
1620         struct wpa_supplicant *wpa_s = ctx;
1621
1622         if (wpa_s->p2p_send_action_work) {
1623                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1624                                      wpa_s, NULL);
1625                 os_free(wpa_s->p2p_send_action_work->ctx);
1626                 radio_work_done(wpa_s->p2p_send_action_work);
1627                 wpa_s->p2p_send_action_work = NULL;
1628         }
1629
1630         offchannel_send_action_done(wpa_s);
1631 }
1632
1633
1634 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1635                                     struct p2p_go_neg_results *params)
1636 {
1637         if (wpa_s->go_params == NULL) {
1638                 wpa_s->go_params = os_malloc(sizeof(*params));
1639                 if (wpa_s->go_params == NULL)
1640                         return -1;
1641         }
1642         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1643         return 0;
1644 }
1645
1646
1647 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1648                                     struct p2p_go_neg_results *res)
1649 {
1650         wpa_s->group_formation_reported = 0;
1651         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1652                    " dev_addr " MACSTR " wps_method %d",
1653                    MAC2STR(res->peer_interface_addr),
1654                    MAC2STR(res->peer_device_addr), res->wps_method);
1655         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1656                           res->ssid, res->ssid_len);
1657         wpa_supplicant_ap_deinit(wpa_s);
1658         wpas_copy_go_neg_results(wpa_s, res);
1659         if (res->wps_method == WPS_PBC) {
1660                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1, 0);
1661 #ifdef CONFIG_WPS_NFC
1662         } else if (res->wps_method == WPS_NFC) {
1663                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1664                                    res->peer_interface_addr,
1665                                    wpa_s->p2pdev->p2p_oob_dev_pw,
1666                                    wpa_s->p2pdev->p2p_oob_dev_pw_id, 1,
1667                                    wpa_s->p2pdev->p2p_oob_dev_pw_id ==
1668                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1669                                    wpa_s->p2pdev->p2p_peer_oob_pubkey_hash :
1670                                    NULL,
1671                                    NULL, 0, 0);
1672 #endif /* CONFIG_WPS_NFC */
1673         } else {
1674                 u16 dev_pw_id = DEV_PW_DEFAULT;
1675                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1676                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1677                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1678                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1679                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1680                                    wpa_s->p2p_pin, 1, dev_pw_id);
1681         }
1682 }
1683
1684
1685 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1686                                   struct wpa_ssid *ssid)
1687 {
1688         struct wpa_ssid *persistent;
1689         struct psk_list_entry *psk;
1690         struct hostapd_data *hapd;
1691
1692         if (!wpa_s->ap_iface)
1693                 return;
1694
1695         persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
1696                                              ssid->ssid_len);
1697         if (persistent == NULL)
1698                 return;
1699
1700         hapd = wpa_s->ap_iface->bss[0];
1701
1702         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1703                          list) {
1704                 struct hostapd_wpa_psk *hpsk;
1705
1706                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1707                         MACSTR " psk=%d",
1708                         MAC2STR(psk->addr), psk->p2p);
1709                 hpsk = os_zalloc(sizeof(*hpsk));
1710                 if (hpsk == NULL)
1711                         break;
1712                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1713                 if (psk->p2p)
1714                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1715                 else
1716                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1717                 hpsk->next = hapd->conf->ssid.wpa_psk;
1718                 hapd->conf->ssid.wpa_psk = hpsk;
1719         }
1720 }
1721
1722
1723 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1724 {
1725         char buf[20 + P2P_MAX_CHANNELS * 6];
1726         char *pos, *end;
1727         unsigned int i;
1728         int res;
1729
1730         pos = buf;
1731         end = pos + sizeof(buf);
1732         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
1733                 res = os_snprintf(pos, end - pos, " %d",
1734                                   wpa_s->p2p_group_common_freqs[i]);
1735                 if (os_snprintf_error(end - pos, res))
1736                         break;
1737                 pos += res;
1738         }
1739         *pos = '\0';
1740
1741         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies:%s", buf);
1742 }
1743
1744
1745 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1746                                            struct p2p_go_neg_results *params)
1747 {
1748         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1749
1750         wpa_s->p2p_group_common_freqs_num = 0;
1751         os_free(wpa_s->p2p_group_common_freqs);
1752         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1753         if (!wpa_s->p2p_group_common_freqs)
1754                 return;
1755
1756         for (i = 0; i < len; i++) {
1757                 if (!wpa_s->go_params->freq_list[i])
1758                         break;
1759                 wpa_s->p2p_group_common_freqs[i] =
1760                         wpa_s->go_params->freq_list[i];
1761         }
1762         wpa_s->p2p_group_common_freqs_num = i;
1763 }
1764
1765
1766 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1767 {
1768 #ifndef CONFIG_NO_CONFIG_WRITE
1769         if (wpa_s->p2pdev->conf->update_config &&
1770             wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
1771                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1772 #endif /* CONFIG_NO_CONFIG_WRITE */
1773 }
1774
1775
1776 static void p2p_go_configured(void *ctx, void *data)
1777 {
1778         struct wpa_supplicant *wpa_s = ctx;
1779         struct p2p_go_neg_results *params = data;
1780         struct wpa_ssid *ssid;
1781
1782         wpa_s->ap_configured_cb = NULL;
1783         wpa_s->ap_configured_cb_ctx = NULL;
1784         wpa_s->ap_configured_cb_data = NULL;
1785         if (!wpa_s->go_params) {
1786                 wpa_printf(MSG_ERROR,
1787                            "P2P: p2p_go_configured() called with wpa_s->go_params == NULL");
1788                 return;
1789         }
1790
1791         p2p_go_save_group_common_freqs(wpa_s, params);
1792         p2p_go_dump_common_freqs(wpa_s);
1793
1794         ssid = wpa_s->current_ssid;
1795         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1796                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1797                 if (wpa_s->global->p2p_group_formation == wpa_s)
1798                         wpa_s->global->p2p_group_formation = NULL;
1799                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1800                                        params->passphrase[0] == '\0' ?
1801                                        params->psk : NULL,
1802                                        params->passphrase,
1803                                        wpa_s->global->p2p_dev_addr,
1804                                        params->persistent_group, "");
1805                 wpa_s->group_formation_reported = 1;
1806
1807                 if (wpa_s->p2pdev->p2ps_method_config_any) {
1808                         if (is_zero_ether_addr(wpa_s->p2pdev->p2ps_join_addr)) {
1809                                 wpa_dbg(wpa_s, MSG_DEBUG,
1810                                         "P2PS: Setting default PIN for ANY");
1811                                 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1812                                                           "12345670", NULL, 0,
1813                                                           0);
1814                         } else {
1815                                 wpa_dbg(wpa_s, MSG_DEBUG,
1816                                         "P2PS: Setting default PIN for " MACSTR,
1817                                         MAC2STR(wpa_s->p2pdev->p2ps_join_addr));
1818                                 wpa_supplicant_ap_wps_pin(
1819                                         wpa_s, wpa_s->p2pdev->p2ps_join_addr,
1820                                         "12345670", NULL, 0, 0);
1821                         }
1822                         wpa_s->p2pdev->p2ps_method_config_any = 0;
1823                 }
1824
1825                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1826                 if (params->persistent_group) {
1827                         wpas_p2p_store_persistent_group(
1828                                 wpa_s->p2pdev, ssid,
1829                                 wpa_s->global->p2p_dev_addr);
1830                         wpas_p2p_add_psk_list(wpa_s, ssid);
1831                 }
1832
1833                 wpas_notify_p2p_group_started(wpa_s, ssid,
1834                                               params->persistent_group, 0,
1835                                               NULL);
1836                 wpas_p2p_cross_connect_setup(wpa_s);
1837                 wpas_p2p_set_group_idle_timeout(wpa_s);
1838
1839                 if (wpa_s->p2p_first_connection_timeout) {
1840                         wpa_dbg(wpa_s, MSG_DEBUG,
1841                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1842                                 wpa_s->p2p_first_connection_timeout);
1843                         wpa_s->p2p_go_group_formation_completed = 0;
1844                         wpa_s->global->p2p_group_formation = wpa_s;
1845                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1846                                              wpa_s->p2pdev, NULL);
1847                         eloop_register_timeout(
1848                                 wpa_s->p2p_first_connection_timeout, 0,
1849                                 wpas_p2p_group_formation_timeout,
1850                                 wpa_s->p2pdev, NULL);
1851                 }
1852
1853                 return;
1854         }
1855
1856         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1857         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1858                                               params->peer_interface_addr)) {
1859                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1860                            "filtering");
1861                 return;
1862         }
1863         if (params->wps_method == WPS_PBC) {
1864                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1865                                           params->peer_device_addr);
1866 #ifdef CONFIG_WPS_NFC
1867         } else if (params->wps_method == WPS_NFC) {
1868                 if (wpa_s->p2pdev->p2p_oob_dev_pw_id !=
1869                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1870                     !wpa_s->p2pdev->p2p_oob_dev_pw) {
1871                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1872                         return;
1873                 }
1874                 wpas_ap_wps_add_nfc_pw(
1875                         wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id,
1876                         wpa_s->p2pdev->p2p_oob_dev_pw,
1877                         wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ?
1878                         wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL);
1879 #endif /* CONFIG_WPS_NFC */
1880         } else if (wpa_s->p2p_pin[0])
1881                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1882                                           wpa_s->p2p_pin, NULL, 0, 0);
1883         os_free(wpa_s->go_params);
1884         wpa_s->go_params = NULL;
1885 }
1886
1887
1888 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1889                               struct p2p_go_neg_results *params,
1890                               int group_formation)
1891 {
1892         struct wpa_ssid *ssid;
1893
1894         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1895         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1896                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1897                         "results");
1898                 return;
1899         }
1900
1901         ssid = wpa_config_add_network(wpa_s->conf);
1902         if (ssid == NULL) {
1903                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1904                 return;
1905         }
1906
1907         wpa_s->show_group_started = 0;
1908         wpa_s->p2p_go_group_formation_completed = 0;
1909         wpa_s->group_formation_reported = 0;
1910         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1911
1912         wpa_config_set_network_defaults(ssid);
1913         ssid->temporary = 1;
1914         ssid->p2p_group = 1;
1915         ssid->p2p_persistent_group = !!params->persistent_group;
1916         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1917                 WPAS_MODE_P2P_GO;
1918         ssid->frequency = params->freq;
1919         ssid->ht40 = params->ht40;
1920         ssid->vht = params->vht;
1921         ssid->max_oper_chwidth = params->max_oper_chwidth;
1922         ssid->vht_center_freq2 = params->vht_center_freq2;
1923         ssid->he = params->he;
1924         ssid->ssid = os_zalloc(params->ssid_len + 1);
1925         if (ssid->ssid) {
1926                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1927                 ssid->ssid_len = params->ssid_len;
1928         }
1929         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1930         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1931         ssid->proto = WPA_PROTO_RSN;
1932         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1933         ssid->group_cipher = WPA_CIPHER_CCMP;
1934         if (params->freq > 56160) {
1935                 /*
1936                  * Enable GCMP instead of CCMP as pairwise_cipher and
1937                  * group_cipher in 60 GHz.
1938                  */
1939                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1940                 ssid->group_cipher = WPA_CIPHER_GCMP;
1941                 /* P2P GO in 60 GHz is always a PCP (PBSS) */
1942                 ssid->pbss = 1;
1943         }
1944         if (os_strlen(params->passphrase) > 0) {
1945                 ssid->passphrase = os_strdup(params->passphrase);
1946                 if (ssid->passphrase == NULL) {
1947                         wpa_msg_global(wpa_s, MSG_ERROR,
1948                                        "P2P: Failed to copy passphrase for GO");
1949                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1950                         return;
1951                 }
1952         } else
1953                 ssid->passphrase = NULL;
1954         ssid->psk_set = params->psk_set;
1955         if (ssid->psk_set)
1956                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1957         else if (ssid->passphrase)
1958                 wpa_config_update_psk(ssid);
1959         ssid->ap_max_inactivity = wpa_s->p2pdev->conf->p2p_go_max_inactivity;
1960
1961         wpa_s->ap_configured_cb = p2p_go_configured;
1962         wpa_s->ap_configured_cb_ctx = wpa_s;
1963         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1964         wpa_s->scan_req = NORMAL_SCAN_REQ;
1965         wpa_s->connect_without_scan = ssid;
1966         wpa_s->reassociate = 1;
1967         wpa_s->disconnected = 0;
1968         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1969                 "start GO)");
1970         wpa_supplicant_req_scan(wpa_s, 0, 0);
1971 }
1972
1973
1974 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1975                                   const struct wpa_supplicant *src)
1976 {
1977         struct wpa_config *d;
1978         const struct wpa_config *s;
1979
1980         d = dst->conf;
1981         s = src->conf;
1982
1983 #define C(n)                            \
1984 do {                                    \
1985         if (s->n && !d->n)              \
1986                 d->n = os_strdup(s->n); \
1987 } while (0)
1988
1989         C(device_name);
1990         C(manufacturer);
1991         C(model_name);
1992         C(model_number);
1993         C(serial_number);
1994         C(config_methods);
1995 #undef C
1996
1997         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1998         os_memcpy(d->sec_device_type, s->sec_device_type,
1999                   sizeof(d->sec_device_type));
2000         d->num_sec_device_types = s->num_sec_device_types;
2001
2002         d->p2p_group_idle = s->p2p_group_idle;
2003         d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
2004         d->p2p_intra_bss = s->p2p_intra_bss;
2005         d->persistent_reconnect = s->persistent_reconnect;
2006         d->max_num_sta = s->max_num_sta;
2007         d->pbc_in_m1 = s->pbc_in_m1;
2008         d->ignore_old_scan_res = s->ignore_old_scan_res;
2009         d->beacon_int = s->beacon_int;
2010         d->dtim_period = s->dtim_period;
2011         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
2012         d->disassoc_low_ack = s->disassoc_low_ack;
2013         d->disable_scan_offload = s->disable_scan_offload;
2014         d->passive_scan = s->passive_scan;
2015
2016         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey &&
2017             !d->wps_nfc_pw_from_config) {
2018                 wpabuf_free(d->wps_nfc_dh_privkey);
2019                 wpabuf_free(d->wps_nfc_dh_pubkey);
2020                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
2021                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
2022         }
2023         d->p2p_cli_probe = s->p2p_cli_probe;
2024         d->go_interworking = s->go_interworking;
2025         d->go_access_network_type = s->go_access_network_type;
2026         d->go_internet = s->go_internet;
2027         d->go_venue_group = s->go_venue_group;
2028         d->go_venue_type = s->go_venue_type;
2029 }
2030
2031
2032 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
2033                                       char *ifname, size_t len)
2034 {
2035         char *ifname_ptr = wpa_s->ifname;
2036
2037         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
2038                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
2039                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
2040         }
2041
2042         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
2043         if (os_strlen(ifname) >= IFNAMSIZ &&
2044             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
2045                 int res;
2046
2047                 /* Try to avoid going over the IFNAMSIZ length limit */
2048                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
2049                 if (os_snprintf_error(len, res) && len)
2050                         ifname[len - 1] = '\0';
2051         }
2052 }
2053
2054
2055 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
2056                                         enum wpa_driver_if_type type)
2057 {
2058         char ifname[120], force_ifname[120];
2059
2060         if (wpa_s->pending_interface_name[0]) {
2061                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
2062                            "- skip creation of a new one");
2063                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
2064                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
2065                                    "unknown?! ifname='%s'",
2066                                    wpa_s->pending_interface_name);
2067                         return -1;
2068                 }
2069                 return 0;
2070         }
2071
2072         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
2073         force_ifname[0] = '\0';
2074
2075         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
2076                    ifname);
2077         wpa_s->p2p_group_idx++;
2078
2079         wpa_s->pending_interface_type = type;
2080         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
2081                            wpa_s->pending_interface_addr, NULL) < 0) {
2082                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
2083                            "interface");
2084                 return -1;
2085         }
2086
2087         if (wpa_s->conf->p2p_interface_random_mac_addr) {
2088                 random_mac_addr(wpa_s->pending_interface_addr);
2089                 wpa_printf(MSG_DEBUG, "P2P: Generate random MAC address " MACSTR
2090                            " for the group",
2091                            MAC2STR(wpa_s->pending_interface_addr));
2092         }
2093
2094         if (force_ifname[0]) {
2095                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2096                            force_ifname);
2097                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2098                            sizeof(wpa_s->pending_interface_name));
2099         } else
2100                 os_strlcpy(wpa_s->pending_interface_name, ifname,
2101                            sizeof(wpa_s->pending_interface_name));
2102         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2103                    MACSTR, wpa_s->pending_interface_name,
2104                    MAC2STR(wpa_s->pending_interface_addr));
2105
2106         return 0;
2107 }
2108
2109
2110 static void wpas_p2p_remove_pending_group_interface(
2111         struct wpa_supplicant *wpa_s)
2112 {
2113         if (!wpa_s->pending_interface_name[0] ||
2114             is_zero_ether_addr(wpa_s->pending_interface_addr))
2115                 return; /* No pending virtual interface */
2116
2117         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2118                    wpa_s->pending_interface_name);
2119         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2120                           wpa_s->pending_interface_name);
2121         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2122         wpa_s->pending_interface_name[0] = '\0';
2123         wpa_s->global->pending_group_iface_for_p2ps = 0;
2124 }
2125
2126
2127 static struct wpa_supplicant *
2128 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2129 {
2130         struct wpa_interface iface;
2131         struct wpa_supplicant *group_wpa_s;
2132
2133         if (!wpa_s->pending_interface_name[0]) {
2134                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2135                 if (!wpas_p2p_create_iface(wpa_s))
2136                         return NULL;
2137                 /*
2138                  * Something has forced us to remove the pending interface; try
2139                  * to create a new one and hope for the best that we will get
2140                  * the same local address.
2141                  */
2142                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2143                                                  WPA_IF_P2P_CLIENT) < 0)
2144                         return NULL;
2145         }
2146
2147         os_memset(&iface, 0, sizeof(iface));
2148         iface.ifname = wpa_s->pending_interface_name;
2149         iface.driver = wpa_s->driver->name;
2150         if (wpa_s->conf->ctrl_interface == NULL &&
2151             wpa_s->parent != wpa_s &&
2152             wpa_s->p2p_mgmt &&
2153             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2154                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2155         else
2156                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2157         iface.driver_param = wpa_s->conf->driver_param;
2158         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2159         if (group_wpa_s == NULL) {
2160                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2161                            "wpa_supplicant interface");
2162                 return NULL;
2163         }
2164         wpa_s->pending_interface_name[0] = '\0';
2165         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2166                 P2P_GROUP_INTERFACE_CLIENT;
2167         wpa_s->global->p2p_group_formation = group_wpa_s;
2168         wpa_s->global->pending_group_iface_for_p2ps = 0;
2169
2170         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2171
2172         if (wpa_s->conf->p2p_interface_random_mac_addr) {
2173                 if (wpa_drv_set_mac_addr(group_wpa_s,
2174                                          wpa_s->pending_interface_addr) < 0) {
2175                         wpa_msg(group_wpa_s, MSG_INFO,
2176                                 "Failed to set random MAC address");
2177                         wpa_supplicant_remove_iface(wpa_s->global, group_wpa_s,
2178                                                     0);
2179                         return NULL;
2180                 }
2181
2182                 if (wpa_supplicant_update_mac_addr(group_wpa_s) < 0) {
2183                         wpa_msg(group_wpa_s, MSG_INFO,
2184                                 "Could not update MAC address information");
2185                         wpa_supplicant_remove_iface(wpa_s->global, group_wpa_s,
2186                                                     0);
2187                         return NULL;
2188                 }
2189
2190                 wpa_printf(MSG_DEBUG, "P2P: Using random MAC address " MACSTR
2191                            " for the group",
2192                            MAC2STR(wpa_s->pending_interface_addr));
2193         }
2194
2195         return group_wpa_s;
2196 }
2197
2198
2199 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2200                                              void *timeout_ctx)
2201 {
2202         struct wpa_supplicant *wpa_s = eloop_ctx;
2203         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2204         wpas_p2p_group_formation_failed(wpa_s, 0);
2205 }
2206
2207
2208 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2209                                             int already_deleted)
2210 {
2211         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2212                              wpa_s->p2pdev, NULL);
2213         if (wpa_s->global->p2p)
2214                 p2p_group_formation_failed(wpa_s->global->p2p);
2215         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2216 }
2217
2218
2219 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2220 {
2221         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2222         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2223                              wpa_s->p2pdev, NULL);
2224         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2225                                wpa_s->p2pdev, NULL);
2226         wpa_s->global->p2p_fail_on_wps_complete = 0;
2227 }
2228
2229
2230 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2231 {
2232         if (wpa_s->global->p2p_group_formation != wpa_s)
2233                 return;
2234         /* Speed up group formation timeout since this cannot succeed */
2235         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2236                              wpa_s->p2pdev, NULL);
2237         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2238                                wpa_s->p2pdev, NULL);
2239 }
2240
2241
2242 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2243 {
2244         struct wpa_supplicant *wpa_s = ctx;
2245         struct wpa_supplicant *group_wpa_s;
2246
2247         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2248                 wpa_drv_cancel_remain_on_channel(wpa_s);
2249                 wpa_s->off_channel_freq = 0;
2250                 wpa_s->roc_waiting_drv_freq = 0;
2251         }
2252
2253         if (res->status) {
2254                 wpa_msg_global(wpa_s, MSG_INFO,
2255                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2256                                res->status);
2257                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2258                 wpas_p2p_remove_pending_group_interface(wpa_s);
2259                 return;
2260         }
2261
2262         if (!res->role_go) {
2263                 /* Inform driver of the operating channel of GO. */
2264                 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2265         }
2266
2267         if (wpa_s->p2p_go_ht40)
2268                 res->ht40 = 1;
2269         if (wpa_s->p2p_go_vht)
2270                 res->vht = 1;
2271         res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth;
2272         res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2;
2273
2274         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2275                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2276                        " wps_method=%s",
2277                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2278                        MAC2STR(res->peer_device_addr),
2279                        MAC2STR(res->peer_interface_addr),
2280                        p2p_wps_method_text(res->wps_method));
2281         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2282
2283         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2284                 struct wpa_ssid *ssid;
2285                 ssid = wpa_config_get_network(wpa_s->conf,
2286                                               wpa_s->p2p_persistent_id);
2287                 if (ssid && ssid->disabled == 2 &&
2288                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2289                         size_t len = os_strlen(ssid->passphrase);
2290                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2291                                    "on requested persistent group");
2292                         os_memcpy(res->passphrase, ssid->passphrase, len);
2293                         res->passphrase[len] = '\0';
2294                 }
2295         }
2296
2297         if (wpa_s->create_p2p_iface) {
2298                 group_wpa_s =
2299                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2300                 if (group_wpa_s == NULL) {
2301                         wpas_p2p_remove_pending_group_interface(wpa_s);
2302                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2303                                              wpa_s, NULL);
2304                         wpas_p2p_group_formation_failed(wpa_s, 1);
2305                         return;
2306                 }
2307                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2308                 wpa_s->pending_interface_name[0] = '\0';
2309         } else {
2310                 group_wpa_s = wpa_s->parent;
2311                 wpa_s->global->p2p_group_formation = group_wpa_s;
2312                 if (group_wpa_s != wpa_s)
2313                         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2314         }
2315
2316         group_wpa_s->p2p_in_provisioning = 1;
2317         group_wpa_s->p2pdev = wpa_s;
2318         if (group_wpa_s != wpa_s) {
2319                 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2320                           sizeof(group_wpa_s->p2p_pin));
2321                 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2322         }
2323         if (res->role_go) {
2324                 wpas_start_wps_go(group_wpa_s, res, 1);
2325         } else {
2326                 os_get_reltime(&group_wpa_s->scan_min_time);
2327                 wpas_start_wps_enrollee(group_wpa_s, res);
2328         }
2329
2330         wpa_s->p2p_long_listen = 0;
2331         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2332
2333         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2334         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2335                                (res->peer_config_timeout % 100) * 10000,
2336                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2337 }
2338
2339
2340 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2341                                u8 go_intent)
2342 {
2343         struct wpa_supplicant *wpa_s = ctx;
2344         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2345                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2346                        dev_passwd_id, go_intent);
2347
2348         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2349 }
2350
2351
2352 static void wpas_dev_found(void *ctx, const u8 *addr,
2353                            const struct p2p_peer_info *info,
2354                            int new_device)
2355 {
2356 #ifndef CONFIG_NO_STDOUT_DEBUG
2357         struct wpa_supplicant *wpa_s = ctx;
2358         char devtype[WPS_DEV_TYPE_BUFSIZE];
2359         char *wfd_dev_info_hex = NULL;
2360
2361 #ifdef CONFIG_WIFI_DISPLAY
2362         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2363                                                     WFD_SUBELEM_DEVICE_INFO);
2364 #endif /* CONFIG_WIFI_DISPLAY */
2365
2366         if (info->p2ps_instance) {
2367                 char str[256];
2368                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2369                 size_t len = wpabuf_len(info->p2ps_instance);
2370
2371                 while (len) {
2372                         u32 id;
2373                         u16 methods;
2374                         u8 str_len;
2375
2376                         if (len < 4 + 2 + 1)
2377                                 break;
2378                         id = WPA_GET_LE32(buf);
2379                         buf += sizeof(u32);
2380                         methods = WPA_GET_BE16(buf);
2381                         buf += sizeof(u16);
2382                         str_len = *buf++;
2383                         if (str_len > len - 4 - 2 - 1)
2384                                 break;
2385                         os_memcpy(str, buf, str_len);
2386                         str[str_len] = '\0';
2387                         buf += str_len;
2388                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2389
2390                         wpa_msg_global(wpa_s, MSG_INFO,
2391                                        P2P_EVENT_DEVICE_FOUND MACSTR
2392                                        " p2p_dev_addr=" MACSTR
2393                                        " pri_dev_type=%s name='%s'"
2394                                        " config_methods=0x%x"
2395                                        " dev_capab=0x%x"
2396                                        " group_capab=0x%x"
2397                                        " adv_id=%x asp_svc=%s%s",
2398                                        MAC2STR(addr),
2399                                        MAC2STR(info->p2p_device_addr),
2400                                        wps_dev_type_bin2str(
2401                                                info->pri_dev_type,
2402                                                devtype, sizeof(devtype)),
2403                                        info->device_name, methods,
2404                                        info->dev_capab, info->group_capab,
2405                                        id, str,
2406                                        info->vendor_elems ?
2407                                        " vendor_elems=1" : "");
2408                 }
2409                 goto done;
2410         }
2411
2412         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2413                        " p2p_dev_addr=" MACSTR
2414                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2415                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2416                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2417                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2418                                             sizeof(devtype)),
2419                        info->device_name, info->config_methods,
2420                        info->dev_capab, info->group_capab,
2421                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2422                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2423                        info->vendor_elems ? " vendor_elems=1" : "",
2424                        new_device);
2425
2426 done:
2427         os_free(wfd_dev_info_hex);
2428 #endif /* CONFIG_NO_STDOUT_DEBUG */
2429
2430         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2431 }
2432
2433
2434 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2435 {
2436         struct wpa_supplicant *wpa_s = ctx;
2437
2438         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2439                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2440
2441         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2442 }
2443
2444
2445 static void wpas_find_stopped(void *ctx)
2446 {
2447         struct wpa_supplicant *wpa_s = ctx;
2448
2449         if (wpa_s->p2p_scan_work && wpas_abort_ongoing_scan(wpa_s) < 0)
2450                 wpa_printf(MSG_DEBUG, "P2P: Abort ongoing scan failed");
2451
2452         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2453         wpas_notify_p2p_find_stopped(wpa_s);
2454 }
2455
2456
2457 struct wpas_p2p_listen_work {
2458         unsigned int freq;
2459         unsigned int duration;
2460         struct wpabuf *probe_resp_ie;
2461 };
2462
2463
2464 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2465 {
2466         if (lwork == NULL)
2467                 return;
2468         wpabuf_free(lwork->probe_resp_ie);
2469         os_free(lwork);
2470 }
2471
2472
2473 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2474 {
2475         struct wpas_p2p_listen_work *lwork;
2476
2477         if (!wpa_s->p2p_listen_work)
2478                 return;
2479
2480         lwork = wpa_s->p2p_listen_work->ctx;
2481         wpas_p2p_listen_work_free(lwork);
2482         radio_work_done(wpa_s->p2p_listen_work);
2483         wpa_s->p2p_listen_work = NULL;
2484 }
2485
2486
2487 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2488 {
2489         struct wpa_supplicant *wpa_s = work->wpa_s;
2490         struct wpas_p2p_listen_work *lwork = work->ctx;
2491         unsigned int duration;
2492
2493         if (deinit) {
2494                 if (work->started) {
2495                         wpa_s->p2p_listen_work = NULL;
2496                         wpas_stop_listen(wpa_s);
2497                 }
2498                 wpas_p2p_listen_work_free(lwork);
2499                 return;
2500         }
2501
2502         wpa_s->p2p_listen_work = work;
2503
2504         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2505
2506         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2507                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2508                            "report received Probe Request frames");
2509                 wpas_p2p_listen_work_done(wpa_s);
2510                 return;
2511         }
2512
2513         wpa_s->pending_listen_freq = lwork->freq;
2514         wpa_s->pending_listen_duration = lwork->duration;
2515
2516         duration = lwork->duration;
2517 #ifdef CONFIG_TESTING_OPTIONS
2518         if (wpa_s->extra_roc_dur) {
2519                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2520                            duration, duration + wpa_s->extra_roc_dur);
2521                 duration += wpa_s->extra_roc_dur;
2522         }
2523 #endif /* CONFIG_TESTING_OPTIONS */
2524
2525         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2526                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2527                            "to remain on channel (%u MHz) for Listen "
2528                            "state", lwork->freq);
2529                 wpas_p2p_listen_work_done(wpa_s);
2530                 wpa_s->pending_listen_freq = 0;
2531                 return;
2532         }
2533         wpa_s->off_channel_freq = 0;
2534         wpa_s->roc_waiting_drv_freq = lwork->freq;
2535 }
2536
2537
2538 static int wpas_start_listen(void *ctx, unsigned int freq,
2539                              unsigned int duration,
2540                              const struct wpabuf *probe_resp_ie)
2541 {
2542         struct wpa_supplicant *wpa_s = ctx;
2543         struct wpas_p2p_listen_work *lwork;
2544
2545         if (wpa_s->p2p_listen_work) {
2546                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2547                 return -1;
2548         }
2549
2550         lwork = os_zalloc(sizeof(*lwork));
2551         if (lwork == NULL)
2552                 return -1;
2553         lwork->freq = freq;
2554         lwork->duration = duration;
2555         if (probe_resp_ie) {
2556                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2557                 if (lwork->probe_resp_ie == NULL) {
2558                         wpas_p2p_listen_work_free(lwork);
2559                         return -1;
2560                 }
2561         }
2562
2563         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2564                            lwork) < 0) {
2565                 wpas_p2p_listen_work_free(lwork);
2566                 return -1;
2567         }
2568
2569         return 0;
2570 }
2571
2572
2573 static void wpas_stop_listen(void *ctx)
2574 {
2575         struct wpa_supplicant *wpa_s = ctx;
2576         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2577                 wpa_drv_cancel_remain_on_channel(wpa_s);
2578                 wpa_s->off_channel_freq = 0;
2579                 wpa_s->roc_waiting_drv_freq = 0;
2580         }
2581         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2582
2583         /*
2584          * Don't cancel Probe Request RX reporting for a connected P2P Client
2585          * handling Probe Request frames.
2586          */
2587         if (!wpa_s->p2p_cli_probe)
2588                 wpa_drv_probe_req_report(wpa_s, 0);
2589
2590         wpas_p2p_listen_work_done(wpa_s);
2591 }
2592
2593
2594 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2595                                 unsigned int freq)
2596 {
2597         struct wpa_supplicant *wpa_s = ctx;
2598         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2599                                  freq);
2600 }
2601
2602
2603 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2604                                          const u8 *peer, const char *params,
2605                                          unsigned int generated_pin)
2606 {
2607         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2608                        " %08d%s", MAC2STR(peer), generated_pin, params);
2609 }
2610
2611
2612 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2613                                         const u8 *peer, const char *params)
2614 {
2615         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2616                        "%s", MAC2STR(peer), params);
2617 }
2618
2619
2620 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2621                                const u8 *dev_addr, const u8 *pri_dev_type,
2622                                const char *dev_name, u16 supp_config_methods,
2623                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2624                                size_t group_id_len)
2625 {
2626         struct wpa_supplicant *wpa_s = ctx;
2627         char devtype[WPS_DEV_TYPE_BUFSIZE];
2628         char params[300];
2629         u8 empty_dev_type[8];
2630         unsigned int generated_pin = 0;
2631         struct wpa_supplicant *group = NULL;
2632         int res;
2633
2634         if (group_id) {
2635                 for (group = wpa_s->global->ifaces; group; group = group->next)
2636                 {
2637                         struct wpa_ssid *s = group->current_ssid;
2638                         if (s != NULL &&
2639                             s->mode == WPAS_MODE_P2P_GO &&
2640                             group_id_len - ETH_ALEN == s->ssid_len &&
2641                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2642                                       s->ssid_len) == 0)
2643                                 break;
2644                 }
2645         }
2646
2647         if (pri_dev_type == NULL) {
2648                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2649                 pri_dev_type = empty_dev_type;
2650         }
2651         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2652                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2653                           "dev_capab=0x%x group_capab=0x%x%s%s",
2654                           MAC2STR(dev_addr),
2655                           wps_dev_type_bin2str(pri_dev_type, devtype,
2656                                                sizeof(devtype)),
2657                           dev_name, supp_config_methods, dev_capab, group_capab,
2658                           group ? " group=" : "",
2659                           group ? group->ifname : "");
2660         if (os_snprintf_error(sizeof(params), res))
2661                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2662         params[sizeof(params) - 1] = '\0';
2663
2664         if (config_methods & WPS_CONFIG_DISPLAY) {
2665                 if (wps_generate_pin(&generated_pin) < 0) {
2666                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2667                         wpas_notify_p2p_provision_discovery(
2668                                 wpa_s, peer, 0 /* response */,
2669                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2670                         return;
2671                 }
2672                 wpas_prov_disc_local_display(wpa_s, peer, params,
2673                                              generated_pin);
2674         } else if (config_methods & WPS_CONFIG_KEYPAD)
2675                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2676         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2677                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2678                                MACSTR "%s", MAC2STR(peer), params);
2679
2680         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2681                                             P2P_PROV_DISC_SUCCESS,
2682                                             config_methods, generated_pin);
2683 }
2684
2685
2686 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2687 {
2688         struct wpa_supplicant *wpa_s = ctx;
2689         unsigned int generated_pin = 0;
2690         char params[20];
2691
2692         if (wpa_s->pending_pd_before_join &&
2693             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2694              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2695                 wpa_s->pending_pd_before_join = 0;
2696                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2697                            "join-existing-group operation");
2698                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2699                 return;
2700         }
2701
2702         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2703             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2704                 int res;
2705
2706                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2707                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2708                 if (os_snprintf_error(sizeof(params), res))
2709                         params[sizeof(params) - 1] = '\0';
2710         } else
2711                 params[0] = '\0';
2712
2713         if (config_methods & WPS_CONFIG_DISPLAY)
2714                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2715         else if (config_methods & WPS_CONFIG_KEYPAD) {
2716                 if (wps_generate_pin(&generated_pin) < 0) {
2717                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2718                         wpas_notify_p2p_provision_discovery(
2719                                 wpa_s, peer, 0 /* response */,
2720                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2721                         return;
2722                 }
2723                 wpas_prov_disc_local_display(wpa_s, peer, params,
2724                                              generated_pin);
2725         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2726                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2727                                MACSTR "%s", MAC2STR(peer), params);
2728
2729         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2730                                             P2P_PROV_DISC_SUCCESS,
2731                                             config_methods, generated_pin);
2732 }
2733
2734
2735 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2736                                 enum p2p_prov_disc_status status,
2737                                 u32 adv_id, const u8 *adv_mac,
2738                                 const char *deferred_session_resp)
2739 {
2740         struct wpa_supplicant *wpa_s = ctx;
2741
2742         if (wpa_s->p2p_fallback_to_go_neg) {
2743                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2744                         "failed - fall back to GO Negotiation");
2745                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
2746                                P2P_EVENT_FALLBACK_TO_GO_NEG
2747                                "reason=PD-failed");
2748                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2749                 return;
2750         }
2751
2752         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2753                 wpa_s->pending_pd_before_join = 0;
2754                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2755                            "join-existing-group operation (no ACK for PD "
2756                            "Req attempts)");
2757                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2758                 return;
2759         }
2760
2761         if (adv_id && adv_mac && deferred_session_resp) {
2762                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2763                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2764                                " deferred_session_resp='%s'",
2765                                MAC2STR(peer), status, adv_id,
2766                                deferred_session_resp);
2767         } else if (adv_id && adv_mac) {
2768                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2769                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2770                                MAC2STR(peer), status, adv_id);
2771         } else {
2772                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2773                                " p2p_dev_addr=" MACSTR " status=%d",
2774                                MAC2STR(peer), status);
2775         }
2776
2777         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2778                                             status, 0, 0);
2779 }
2780
2781
2782 static int freq_included(struct wpa_supplicant *wpa_s,
2783                          const struct p2p_channels *channels,
2784                          unsigned int freq)
2785 {
2786         if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2787             wpas_p2p_go_is_peer_freq(wpa_s, freq))
2788                 return 1;
2789         return 0;
2790 }
2791
2792
2793 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2794 {
2795         unsigned int num = P2P_MAX_CHANNELS;
2796         int *common_freqs;
2797         int ret;
2798
2799         p2p_go_dump_common_freqs(wpa_s);
2800         common_freqs = os_calloc(num, sizeof(int));
2801         if (!common_freqs)
2802                 return;
2803
2804         ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2805         if (ret < 0) {
2806                 wpa_dbg(wpa_s, MSG_DEBUG,
2807                         "P2P: Failed to get group common freqs");
2808                 os_free(common_freqs);
2809                 return;
2810         }
2811
2812         os_free(wpa_s->p2p_group_common_freqs);
2813         wpa_s->p2p_group_common_freqs = common_freqs;
2814         wpa_s->p2p_group_common_freqs_num = num;
2815         p2p_go_dump_common_freqs(wpa_s);
2816 }
2817
2818
2819 /*
2820  * Check if the given frequency is one of the possible operating frequencies
2821  * set after the completion of the GO Negotiation.
2822  */
2823 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2824 {
2825         unsigned int i;
2826
2827         p2p_go_dump_common_freqs(wpa_s);
2828
2829         /* assume no restrictions */
2830         if (!wpa_s->p2p_group_common_freqs_num)
2831                 return 1;
2832
2833         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2834                 if (wpa_s->p2p_group_common_freqs[i] == freq)
2835                         return 1;
2836         }
2837         return 0;
2838 }
2839
2840
2841 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2842                                struct sta_info *sta, void *ctx)
2843 {
2844         int *ecsa_support = ctx;
2845
2846         *ecsa_support &= sta->ecsa_supported;
2847
2848         return 0;
2849 }
2850
2851
2852 /* Check if all the peers support eCSA */
2853 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2854 {
2855         int ecsa_support = 1;
2856
2857         ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2858                         &ecsa_support);
2859
2860         return ecsa_support;
2861 }
2862
2863
2864 /**
2865  * Pick the best frequency to use from all the currently used frequencies.
2866  */
2867 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2868                                         struct wpa_used_freq_data *freqs,
2869                                         unsigned int num)
2870 {
2871         unsigned int i, c;
2872
2873         /* find a candidate freq that is supported by P2P */
2874         for (c = 0; c < num; c++)
2875                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2876                         break;
2877
2878         if (c == num)
2879                 return 0;
2880
2881         /* once we have a candidate, try to find a 'better' one */
2882         for (i = c + 1; i < num; i++) {
2883                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2884                         continue;
2885
2886                 /*
2887                  * 1. Infrastructure station interfaces have higher preference.
2888                  * 2. P2P Clients have higher preference.
2889                  * 3. All others.
2890                  */
2891                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2892                         c = i;
2893                         break;
2894                 }
2895
2896                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2897                         c = i;
2898         }
2899         return freqs[c].freq;
2900 }
2901
2902
2903 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2904                                   const u8 *go_dev_addr, const u8 *ssid,
2905                                   size_t ssid_len, int *go, u8 *group_bssid,
2906                                   int *force_freq, int persistent_group,
2907                                   const struct p2p_channels *channels,
2908                                   int dev_pw_id)
2909 {
2910         struct wpa_supplicant *wpa_s = ctx;
2911         struct wpa_ssid *s;
2912         struct wpa_used_freq_data *freqs;
2913         struct wpa_supplicant *grp;
2914         int best_freq;
2915
2916         if (!persistent_group) {
2917                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2918                            " to join an active group (SSID: %s)",
2919                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2920                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2921                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2922                      == 0 ||
2923                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2924                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2925                                    "authorized invitation");
2926                         goto accept_inv;
2927                 }
2928
2929 #ifdef CONFIG_WPS_NFC
2930                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2931                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2932                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2933                         wpa_s->p2p_wps_method = WPS_NFC;
2934                         wpa_s->pending_join_wps_method = WPS_NFC;
2935                         os_memcpy(wpa_s->pending_join_dev_addr,
2936                                   go_dev_addr, ETH_ALEN);
2937                         os_memcpy(wpa_s->pending_join_iface_addr,
2938                                   bssid, ETH_ALEN);
2939                         goto accept_inv;
2940                 }
2941 #endif /* CONFIG_WPS_NFC */
2942
2943                 /*
2944                  * Do not accept the invitation automatically; notify user and
2945                  * request approval.
2946                  */
2947                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2948         }
2949
2950         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2951         if (grp) {
2952                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2953                            "running persistent group");
2954                 if (*go)
2955                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2956                 goto accept_inv;
2957         }
2958
2959         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2960             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2961                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2962                            "invitation to re-invoke a persistent group");
2963                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2964         } else if (!wpa_s->conf->persistent_reconnect)
2965                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2966
2967         for (s = wpa_s->conf->ssid; s; s = s->next) {
2968                 if (s->disabled == 2 &&
2969                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2970                     s->ssid_len == ssid_len &&
2971                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2972                         break;
2973         }
2974
2975         if (!s) {
2976                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2977                            " requested reinvocation of an unknown group",
2978                            MAC2STR(sa));
2979                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2980         }
2981
2982         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2983                 *go = 1;
2984                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2985                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2986                                    "interface is already in use - reject "
2987                                    "invitation");
2988                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2989                 }
2990                 if (wpa_s->p2p_mgmt)
2991                         os_memcpy(group_bssid, wpa_s->parent->own_addr,
2992                                   ETH_ALEN);
2993                 else
2994                         os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2995         } else if (s->mode == WPAS_MODE_P2P_GO) {
2996                 *go = 1;
2997                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2998                 {
2999                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3000                                    "interface address for the group");
3001                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
3002                 }
3003                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
3004                           ETH_ALEN);
3005         }
3006
3007 accept_inv:
3008         wpas_p2p_set_own_freq_preference(wpa_s, 0);
3009
3010         best_freq = 0;
3011         freqs = os_calloc(wpa_s->num_multichan_concurrent,
3012                           sizeof(struct wpa_used_freq_data));
3013         if (freqs) {
3014                 int num_channels = wpa_s->num_multichan_concurrent;
3015                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
3016                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
3017                 os_free(freqs);
3018         }
3019
3020         /* Get one of the frequencies currently in use */
3021         if (best_freq > 0) {
3022                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
3023                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
3024
3025                 if (wpa_s->num_multichan_concurrent < 2 ||
3026                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
3027                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
3028                         *force_freq = best_freq;
3029                 }
3030         }
3031
3032         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
3033             wpas_p2p_num_unused_channels(wpa_s) > 0) {
3034                 if (*go == 0) {
3035                         /* We are the client */
3036                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
3037                                    "running a GO but we are capable of MCC, "
3038                                    "figure out the best channel to use");
3039                         *force_freq = 0;
3040                 } else if (!freq_included(wpa_s, channels, *force_freq)) {
3041                         /* We are the GO, and *force_freq is not in the
3042                          * intersection */
3043                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
3044                                    "in intersection but we are capable of MCC, "
3045                                    "figure out the best channel to use",
3046                                    *force_freq);
3047                         *force_freq = 0;
3048                 }
3049         }
3050
3051         return P2P_SC_SUCCESS;
3052 }
3053
3054
3055 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
3056                                      const u8 *ssid, size_t ssid_len,
3057                                      const u8 *go_dev_addr, u8 status,
3058                                      int op_freq)
3059 {
3060         struct wpa_supplicant *wpa_s = ctx;
3061         struct wpa_ssid *s;
3062
3063         for (s = wpa_s->conf->ssid; s; s = s->next) {
3064                 if (s->disabled == 2 &&
3065                     s->ssid_len == ssid_len &&
3066                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3067                         break;
3068         }
3069
3070         if (status == P2P_SC_SUCCESS) {
3071                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3072                            " was accepted; op_freq=%d MHz, SSID=%s",
3073                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3074                 if (s) {
3075                         int go = s->mode == WPAS_MODE_P2P_GO;
3076                         if (go) {
3077                                 wpa_msg_global(wpa_s, MSG_INFO,
3078                                                P2P_EVENT_INVITATION_ACCEPTED
3079                                                "sa=" MACSTR
3080                                                " persistent=%d freq=%d",
3081                                                MAC2STR(sa), s->id, op_freq);
3082                         } else {
3083                                 wpa_msg_global(wpa_s, MSG_INFO,
3084                                                P2P_EVENT_INVITATION_ACCEPTED
3085                                                "sa=" MACSTR
3086                                                " persistent=%d",
3087                                                MAC2STR(sa), s->id);
3088                         }
3089                         wpas_p2p_group_add_persistent(
3090                                 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, 0, NULL,
3091                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
3092                                 1);
3093                 } else if (bssid) {
3094                         wpa_s->user_initiated_pd = 0;
3095                         wpa_msg_global(wpa_s, MSG_INFO,
3096                                        P2P_EVENT_INVITATION_ACCEPTED
3097                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3098                                        " bssid=" MACSTR " unknown-network",
3099                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3100                                        MAC2STR(bssid));
3101                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3102                                       wpa_s->p2p_wps_method, 0, op_freq,
3103                                       ssid, ssid_len);
3104                 }
3105                 return;
3106         }
3107
3108         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3109                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3110                            " was rejected (status %u)", MAC2STR(sa), status);
3111                 return;
3112         }
3113
3114         if (!s) {
3115                 if (bssid) {
3116                         wpa_msg_global(wpa_s, MSG_INFO,
3117                                        P2P_EVENT_INVITATION_RECEIVED
3118                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3119                                        " bssid=" MACSTR " unknown-network",
3120                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3121                                        MAC2STR(bssid));
3122                 } else {
3123                         wpa_msg_global(wpa_s, MSG_INFO,
3124                                        P2P_EVENT_INVITATION_RECEIVED
3125                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3126                                        " unknown-network",
3127                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3128                 }
3129                 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3130                                                     bssid, 0, op_freq);
3131                 return;
3132         }
3133
3134         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3135                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3136                                "sa=" MACSTR " persistent=%d freq=%d",
3137                                MAC2STR(sa), s->id, op_freq);
3138         } else {
3139                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3140                                "sa=" MACSTR " persistent=%d",
3141                                MAC2STR(sa), s->id);
3142         }
3143         wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3144                                             s->id, op_freq);
3145 }
3146
3147
3148 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3149                                         struct wpa_ssid *ssid,
3150                                         const u8 *peer, int inv)
3151 {
3152         size_t i;
3153         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3154
3155         if (ssid == NULL)
3156                 return;
3157
3158         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3159                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3160                               ETH_ALEN) == 0)
3161                         break;
3162         }
3163         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3164                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3165                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3166                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3167                                    "due to invitation result", ssid->id);
3168                         wpas_notify_network_removed(wpa_s, ssid);
3169                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3170                         return;
3171                 }
3172                 return; /* Peer not found in client list */
3173         }
3174
3175         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3176                    "group %d client list%s",
3177                    MAC2STR(peer), ssid->id,
3178                    inv ? " due to invitation result" : "");
3179         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3180                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3181                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3182         ssid->num_p2p_clients--;
3183         if (p2p_wpa_s->conf->update_config &&
3184             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3185                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3186 }
3187
3188
3189 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3190                                           const u8 *peer)
3191 {
3192         struct wpa_ssid *ssid;
3193
3194         wpa_s = wpa_s->global->p2p_invite_group;
3195         if (wpa_s == NULL)
3196                 return; /* No known invitation group */
3197         ssid = wpa_s->current_ssid;
3198         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3199             !ssid->p2p_persistent_group)
3200                 return; /* Not operating as a GO in persistent group */
3201         ssid = wpas_p2p_get_persistent(wpa_s->p2pdev, peer,
3202                                        ssid->ssid, ssid->ssid_len);
3203         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3204 }
3205
3206
3207 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3208                                    const struct p2p_channels *channels,
3209                                    const u8 *peer, int neg_freq,
3210                                    int peer_oper_freq)
3211 {
3212         struct wpa_supplicant *wpa_s = ctx;
3213         struct wpa_ssid *ssid;
3214         int freq;
3215
3216         if (bssid) {
3217                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3218                                "status=%d " MACSTR,
3219                                status, MAC2STR(bssid));
3220         } else {
3221                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3222                                "status=%d ", status);
3223         }
3224         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3225
3226         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3227                    status, MAC2STR(peer));
3228         if (wpa_s->pending_invite_ssid_id == -1) {
3229                 struct wpa_supplicant *group_if =
3230                         wpa_s->global->p2p_invite_group;
3231
3232                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3233                         wpas_remove_persistent_client(wpa_s, peer);
3234
3235                 /*
3236                  * Invitation to an active group. If this is successful and we
3237                  * are the GO, set the client wait to postpone some concurrent
3238                  * operations and to allow provisioning and connection to happen
3239                  * more quickly.
3240                  */
3241                 if (status == P2P_SC_SUCCESS &&
3242                     group_if && group_if->current_ssid &&
3243                     group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3244                         os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3245 #ifdef CONFIG_TESTING_OPTIONS
3246                         if (group_if->p2p_go_csa_on_inv) {
3247                                 wpa_printf(MSG_DEBUG,
3248                                            "Testing: force P2P GO CSA after invitation");
3249                                 eloop_cancel_timeout(
3250                                         wpas_p2p_reconsider_moving_go,
3251                                         wpa_s, NULL);
3252                                 eloop_register_timeout(
3253                                         0, 50000,
3254                                         wpas_p2p_reconsider_moving_go,
3255                                         wpa_s, NULL);
3256                         }
3257 #endif /* CONFIG_TESTING_OPTIONS */
3258                 }
3259                 return;
3260         }
3261
3262         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3263                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3264                            "invitation exchange to indicate readiness for "
3265                            "re-invocation");
3266         }
3267
3268         if (status != P2P_SC_SUCCESS) {
3269                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3270                         ssid = wpa_config_get_network(
3271                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3272                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3273                 }
3274                 wpas_p2p_remove_pending_group_interface(wpa_s);
3275                 return;
3276         }
3277
3278         ssid = wpa_config_get_network(wpa_s->conf,
3279                                       wpa_s->pending_invite_ssid_id);
3280         if (ssid == NULL) {
3281                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3282                            "data matching with invitation");
3283                 return;
3284         }
3285
3286         /*
3287          * The peer could have missed our ctrl::ack frame for Invitation
3288          * Response and continue retransmitting the frame. To reduce the
3289          * likelihood of the peer not getting successful TX status for the
3290          * Invitation Response frame, wait a short time here before starting
3291          * the persistent group so that we will remain on the current channel to
3292          * acknowledge any possible retransmission from the peer.
3293          */
3294         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3295                 "starting persistent group");
3296         os_sleep(0, 50000);
3297
3298         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3299             freq_included(wpa_s, channels, neg_freq))
3300                 freq = neg_freq;
3301         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3302                  freq_included(wpa_s, channels, peer_oper_freq))
3303                 freq = peer_oper_freq;
3304         else
3305                 freq = 0;
3306
3307         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3308                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3309         wpas_p2p_group_add_persistent(wpa_s, ssid,
3310                                       ssid->mode == WPAS_MODE_P2P_GO,
3311                                       wpa_s->p2p_persistent_go_freq,
3312                                       freq,
3313                                       wpa_s->p2p_go_vht_center_freq2,
3314                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3315                                       wpa_s->p2p_go_max_oper_chwidth,
3316                                       wpa_s->p2p_go_he,
3317                                       channels,
3318                                       ssid->mode == WPAS_MODE_P2P_GO ?
3319                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3320                                       0, 1);
3321 }
3322
3323
3324 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3325                                     unsigned int freq)
3326 {
3327         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3328                 return 1;
3329         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3330 }
3331
3332
3333 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3334 {
3335         reg->channel[reg->channels] = chan;
3336         reg->channels++;
3337 }
3338
3339
3340 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3341                                      struct p2p_channels *chan,
3342                                      struct p2p_channels *cli_chan)
3343 {
3344         int i, cla = 0;
3345
3346         wpa_s->global->p2p_24ghz_social_channels = 1;
3347
3348         os_memset(cli_chan, 0, sizeof(*cli_chan));
3349
3350         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3351                    "band");
3352
3353         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3354         chan->reg_class[cla].reg_class = 81;
3355         chan->reg_class[cla].channels = 0;
3356         for (i = 0; i < 11; i++) {
3357                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3358                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3359         }
3360         if (chan->reg_class[cla].channels)
3361                 cla++;
3362
3363         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3364                    "band");
3365
3366         /* Operating class 115 - 5 GHz, channels 36-48 */
3367         chan->reg_class[cla].reg_class = 115;
3368         chan->reg_class[cla].channels = 0;
3369         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3370                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3371         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3372                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3373         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3374                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3375         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3376                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3377         if (chan->reg_class[cla].channels)
3378                 cla++;
3379
3380         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3381                    "band");
3382
3383         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3384         chan->reg_class[cla].reg_class = 124;
3385         chan->reg_class[cla].channels = 0;
3386         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3387                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3388         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3389                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3390         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3391                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3392         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3393                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3394         if (chan->reg_class[cla].channels)
3395                 cla++;
3396
3397         chan->reg_classes = cla;
3398         return 0;
3399 }
3400
3401
3402 static int has_channel(struct wpa_global *global,
3403                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3404 {
3405         int i;
3406         unsigned int freq;
3407
3408         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3409                 chan * 5;
3410         if (wpas_p2p_disallowed_freq(global, freq))
3411                 return NOT_ALLOWED;
3412
3413         for (i = 0; i < mode->num_channels; i++) {
3414                 if (mode->channels[i].chan == chan) {
3415                         if (flags)
3416                                 *flags = mode->channels[i].flag;
3417                         if (mode->channels[i].flag &
3418                             (HOSTAPD_CHAN_DISABLED |
3419                              HOSTAPD_CHAN_RADAR))
3420                                 return NOT_ALLOWED;
3421                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3422                                 return NO_IR;
3423                         return ALLOWED;
3424                 }
3425         }
3426
3427         return NOT_ALLOWED;
3428 }
3429
3430
3431 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3432                                      struct hostapd_hw_modes *mode,
3433                                      u8 channel)
3434 {
3435         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3436         size_t i;
3437
3438         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3439                 return 0;
3440
3441         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3442                 /*
3443                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3444                  * so the center channel is 6 channels away from the start/end.
3445                  */
3446                 if (channel >= center_channels[i] - 6 &&
3447                     channel <= center_channels[i] + 6)
3448                         return center_channels[i];
3449
3450         return 0;
3451 }
3452
3453
3454 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3455                                                struct hostapd_hw_modes *mode,
3456                                                u8 channel, u8 bw)
3457 {
3458         u8 center_chan;
3459         int i, flags;
3460         enum chan_allowed res, ret = ALLOWED;
3461
3462         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3463         if (!center_chan)
3464                 return NOT_ALLOWED;
3465         if (center_chan >= 58 && center_chan <= 138)
3466                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3467
3468         /* check all the channels are available */
3469         for (i = 0; i < 4; i++) {
3470                 int adj_chan = center_chan - 6 + i * 4;
3471
3472                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3473                 if (res == NOT_ALLOWED)
3474                         return NOT_ALLOWED;
3475                 if (res == NO_IR)
3476                         ret = NO_IR;
3477
3478                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3479                         return NOT_ALLOWED;
3480                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3481                         return NOT_ALLOWED;
3482                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3483                         return NOT_ALLOWED;
3484                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3485                         return NOT_ALLOWED;
3486         }
3487
3488         return ret;
3489 }
3490
3491
3492 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3493                                      struct hostapd_hw_modes *mode,
3494                                      u8 channel)
3495 {
3496         u8 center_channels[] = { 50, 114 };
3497         unsigned int i;
3498
3499         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3500                 return 0;
3501
3502         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3503                 /*
3504                  * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3505                  * so the center channel is 14 channels away from the start/end.
3506                  */
3507                 if (channel >= center_channels[i] - 14 &&
3508                     channel <= center_channels[i] + 14)
3509                         return center_channels[i];
3510
3511         return 0;
3512 }
3513
3514
3515 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3516                                                struct hostapd_hw_modes *mode,
3517                                                u8 channel, u8 bw)
3518 {
3519         u8 center_chan;
3520         int i, flags;
3521         enum chan_allowed res, ret = ALLOWED;
3522
3523         center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3524         if (!center_chan)
3525                 return NOT_ALLOWED;
3526         /* VHT 160 MHz uses DFS channels in most countries. */
3527
3528         /* Check all the channels are available */
3529         for (i = 0; i < 8; i++) {
3530                 int adj_chan = center_chan - 14 + i * 4;
3531
3532                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3533                 if (res == NOT_ALLOWED)
3534                         return NOT_ALLOWED;
3535
3536                 if (res == NO_IR)
3537                         ret = NO_IR;
3538
3539                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3540                         return NOT_ALLOWED;
3541                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3542                         return NOT_ALLOWED;
3543                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3544                         return NOT_ALLOWED;
3545                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3546                         return NOT_ALLOWED;
3547                 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3548                         return NOT_ALLOWED;
3549                 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3550                         return NOT_ALLOWED;
3551                 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3552                         return NOT_ALLOWED;
3553                 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3554                         return NOT_ALLOWED;
3555         }
3556
3557         return ret;
3558 }
3559
3560
3561 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3562                                                  struct hostapd_hw_modes *mode,
3563                                                  u8 channel, u8 bw)
3564 {
3565         int flag = 0;
3566         enum chan_allowed res, res2;
3567
3568         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3569         if (bw == BW40MINUS) {
3570                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3571                         return NOT_ALLOWED;
3572                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3573         } else if (bw == BW40PLUS) {
3574                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3575                         return NOT_ALLOWED;
3576                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3577         } else if (bw == BW80) {
3578                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3579         } else if (bw == BW160) {
3580                 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3581         }
3582
3583         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3584                 return NOT_ALLOWED;
3585         if (res == NO_IR || res2 == NO_IR)
3586                 return NO_IR;
3587         return res;
3588 }
3589
3590
3591 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3592                                    struct p2p_channels *chan,
3593                                    struct p2p_channels *cli_chan)
3594 {
3595         struct hostapd_hw_modes *mode;
3596         int cla, op, cli_cla;
3597
3598         if (wpa_s->hw.modes == NULL) {
3599                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3600                            "of all supported channels; assume dualband "
3601                            "support");
3602                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3603         }
3604
3605         cla = cli_cla = 0;
3606
3607         for (op = 0; global_op_class[op].op_class; op++) {
3608                 const struct oper_class_map *o = &global_op_class[op];
3609                 u8 ch;
3610                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3611
3612                 if (o->p2p == NO_P2P_SUPP)
3613                         continue;
3614
3615                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3616                 if (mode == NULL)
3617                         continue;
3618                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3619                         wpa_s->global->p2p_24ghz_social_channels = 1;
3620                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3621                         enum chan_allowed res;
3622                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3623                         if (res == ALLOWED) {
3624                                 if (reg == NULL) {
3625                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3626                                                    o->op_class);
3627                                         reg = &chan->reg_class[cla];
3628                                         cla++;
3629                                         reg->reg_class = o->op_class;
3630                                 }
3631                                 reg->channel[reg->channels] = ch;
3632                                 reg->channels++;
3633                         } else if (res == NO_IR &&
3634                                    wpa_s->conf->p2p_add_cli_chan) {
3635                                 if (cli_reg == NULL) {
3636                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3637                                                    o->op_class);
3638                                         cli_reg = &cli_chan->reg_class[cli_cla];
3639                                         cli_cla++;
3640                                         cli_reg->reg_class = o->op_class;
3641                                 }
3642                                 cli_reg->channel[cli_reg->channels] = ch;
3643                                 cli_reg->channels++;
3644                         }
3645                 }
3646                 if (reg) {
3647                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3648                                     reg->channel, reg->channels);
3649                 }
3650                 if (cli_reg) {
3651                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3652                                     cli_reg->channel, cli_reg->channels);
3653                 }
3654         }
3655
3656         chan->reg_classes = cla;
3657         cli_chan->reg_classes = cli_cla;
3658
3659         return 0;
3660 }
3661
3662
3663 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3664                            struct hostapd_hw_modes *mode, u8 channel)
3665 {
3666         int op;
3667         enum chan_allowed ret;
3668
3669         for (op = 0; global_op_class[op].op_class; op++) {
3670                 const struct oper_class_map *o = &global_op_class[op];
3671                 u8 ch;
3672
3673                 if (o->p2p == NO_P2P_SUPP)
3674                         continue;
3675
3676                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3677                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3678                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3679                             ch != channel)
3680                                 continue;
3681                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3682                         if (ret == ALLOWED)
3683                                 return (o->bw == BW40MINUS) ? -1 : 1;
3684                 }
3685         }
3686         return 0;
3687 }
3688
3689
3690 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3691                               struct hostapd_hw_modes *mode, u8 channel)
3692 {
3693         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3694                 return 0;
3695
3696         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3697 }
3698
3699
3700 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3701                                struct hostapd_hw_modes *mode, u8 channel)
3702 {
3703         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3704                 return 0;
3705         return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3706 }
3707
3708
3709 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3710                         size_t buf_len)
3711 {
3712         struct wpa_supplicant *wpa_s = ctx;
3713
3714         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3715                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3716                         break;
3717         }
3718         if (wpa_s == NULL)
3719                 return -1;
3720
3721         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3722 }
3723
3724
3725 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3726                                               const u8 *ssid, size_t ssid_len)
3727 {
3728         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3729                 struct wpa_ssid *s = wpa_s->current_ssid;
3730                 if (s == NULL)
3731                         continue;
3732                 if (s->mode != WPAS_MODE_P2P_GO &&
3733                     s->mode != WPAS_MODE_AP &&
3734                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3735                         continue;
3736                 if (s->ssid_len != ssid_len ||
3737                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3738                         continue;
3739                 return wpa_s;
3740         }
3741
3742         return NULL;
3743
3744 }
3745
3746
3747 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3748                                                   const u8 *peer_dev_addr)
3749 {
3750         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3751                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3752                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3753                         continue;
3754                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3755                         return wpa_s;
3756         }
3757
3758         return NULL;
3759 }
3760
3761
3762 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3763 {
3764         struct wpa_supplicant *wpa_s = ctx;
3765
3766         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3767 }
3768
3769
3770 static int wpas_is_concurrent_session_active(void *ctx)
3771 {
3772         struct wpa_supplicant *wpa_s = ctx;
3773         struct wpa_supplicant *ifs;
3774
3775         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3776                 if (ifs == wpa_s)
3777                         continue;
3778                 if (ifs->wpa_state > WPA_ASSOCIATED)
3779                         return 1;
3780         }
3781         return 0;
3782 }
3783
3784
3785 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3786 {
3787         struct wpa_supplicant *wpa_s = ctx;
3788         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3789 }
3790
3791
3792 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3793                                   const char *conf_p2p_dev)
3794 {
3795         struct wpa_interface iface;
3796         struct wpa_supplicant *p2pdev_wpa_s;
3797         char ifname[100];
3798         char force_name[100];
3799         int ret;
3800
3801         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3802                           wpa_s->ifname);
3803         if (os_snprintf_error(sizeof(ifname), ret))
3804                 return -1;
3805         force_name[0] = '\0';
3806         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3807         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3808                              force_name, wpa_s->pending_interface_addr, NULL);
3809         if (ret < 0) {
3810                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3811                 return ret;
3812         }
3813         os_strlcpy(wpa_s->pending_interface_name, ifname,
3814                    sizeof(wpa_s->pending_interface_name));
3815
3816         os_memset(&iface, 0, sizeof(iface));
3817         iface.p2p_mgmt = 1;
3818         iface.ifname = wpa_s->pending_interface_name;
3819         iface.driver = wpa_s->driver->name;
3820         iface.driver_param = wpa_s->conf->driver_param;
3821
3822         /*
3823          * If a P2P Device configuration file was given, use it as the interface
3824          * configuration file (instead of using parent's configuration file.
3825          */
3826         if (conf_p2p_dev) {
3827                 iface.confname = conf_p2p_dev;
3828                 iface.ctrl_interface = NULL;
3829         } else {
3830                 iface.confname = wpa_s->confname;
3831                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3832         }
3833
3834         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3835         if (!p2pdev_wpa_s) {
3836                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3837                 return -1;
3838         }
3839
3840         p2pdev_wpa_s->p2pdev = p2pdev_wpa_s;
3841         wpa_s->pending_interface_name[0] = '\0';
3842         return 0;
3843 }
3844
3845
3846 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3847                                const u8 *noa, size_t noa_len)
3848 {
3849         struct wpa_supplicant *wpa_s, *intf = ctx;
3850         char hex[100];
3851
3852         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3853                 if (wpa_s->waiting_presence_resp)
3854                         break;
3855         }
3856         if (!wpa_s) {
3857                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3858                 return;
3859         }
3860         wpa_s->waiting_presence_resp = 0;
3861
3862         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3863         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3864                 " status=%u noa=%s", MAC2STR(src), status, hex);
3865 }
3866
3867
3868 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3869                                      size_t ssid_len, u8 *go_dev_addr,
3870                                      u8 *ret_ssid, size_t *ret_ssid_len,
3871                                      u8 *intended_iface_addr)
3872 {
3873         struct wpa_supplicant *wpa_s = ctx;
3874         struct wpa_ssid *s;
3875
3876         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3877         if (s) {
3878                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3879                 *ret_ssid_len = s->ssid_len;
3880                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3881
3882                 if (s->mode != WPAS_MODE_P2P_GO) {
3883                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3884                 } else if (wpas_p2p_create_iface(wpa_s)) {
3885                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3886                                 return 0;
3887
3888                         os_memcpy(intended_iface_addr,
3889                                   wpa_s->pending_interface_addr, ETH_ALEN);
3890                 } else {
3891                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3892                                   ETH_ALEN);
3893                 }
3894                 return 1;
3895         }
3896
3897         return 0;
3898 }
3899
3900
3901 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3902                             u8 *ssid, size_t *ssid_len, int *group_iface,
3903                             unsigned int *freq)
3904 {
3905         struct wpa_supplicant *wpa_s = ctx;
3906         struct wpa_supplicant *go;
3907         struct wpa_ssid *s;
3908
3909         /*
3910          * group_iface will be set to 1 only if a dedicated interface for P2P
3911          * role is required. First, we try to reuse an active GO. However,
3912          * if it is not present, we will try to reactivate an existing
3913          * persistent group and set group_iface to 1, so the caller will know
3914          * that the pending interface should be used.
3915          */
3916         *group_iface = 0;
3917
3918         if (freq)
3919                 *freq = 0;
3920
3921         go = wpas_p2p_get_go_group(wpa_s);
3922         if (!go) {
3923                 s = wpas_p2p_get_persistent_go(wpa_s);
3924                 *group_iface = wpas_p2p_create_iface(wpa_s);
3925                 if (s)
3926                         os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3927                 else
3928                         return 0;
3929         } else {
3930                 s = go->current_ssid;
3931                 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3932                 if (freq)
3933                         *freq = go->assoc_freq;
3934         }
3935
3936         os_memcpy(ssid, s->ssid, s->ssid_len);
3937         *ssid_len = s->ssid_len;
3938
3939         return 1;
3940 }
3941
3942
3943 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3944                                     const u8 *ssid, size_t ssid_len)
3945 {
3946         struct wpa_supplicant *wpa_s = ctx;
3947         struct wpa_ssid *s;
3948         int save_config = 0;
3949         size_t i;
3950
3951         /* Start with our first choice of Persistent Groups */
3952         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3953                 if (go && ssid && ssid_len &&
3954                     s->ssid_len == ssid_len &&
3955                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3956                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3957                         break;
3958
3959                 /* Remove stale persistent group */
3960                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3961                         wpa_dbg(wpa_s, MSG_DEBUG,
3962                                 "P2P: Remove stale persistent group id=%d",
3963                                 s->id);
3964                         wpas_notify_persistent_group_removed(wpa_s, s);
3965                         wpa_config_remove_network(wpa_s->conf, s->id);
3966                         save_config = 1;
3967                         continue;
3968                 }
3969
3970                 for (i = 0; i < s->num_p2p_clients; i++) {
3971                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3972                                       peer, ETH_ALEN) != 0)
3973                                 continue;
3974
3975                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3976                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3977                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3978                         break;
3979                 }
3980                 s->num_p2p_clients--;
3981                 save_config = 1;
3982         }
3983
3984         if (save_config)
3985                 p2p_config_write(wpa_s);
3986
3987         /* Return TRUE if valid SSID remains */
3988         return s != NULL;
3989 }
3990
3991
3992 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3993                                        const u8 *feat_cap, size_t feat_cap_len)
3994 {
3995         static const char pref[] = " feature_cap=";
3996         int ret;
3997
3998         buf[0] = '\0';
3999
4000         /*
4001          * We expect a feature capability to contain at least one byte to be
4002          * reported. The string buffer provided by the caller function is
4003          * expected to be big enough to contain all bytes of the attribute for
4004          * known specifications. This function truncates the reported bytes if
4005          * the feature capability data exceeds the string buffer size.
4006          */
4007         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
4008                 return;
4009
4010         os_memcpy(buf, pref, sizeof(pref));
4011         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
4012                                buf_len - sizeof(pref) + 1,
4013                                feat_cap, feat_cap_len);
4014
4015         if (ret != (2 * (int) feat_cap_len))
4016                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
4017 }
4018
4019
4020 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
4021                                     const u8 *adv_mac, const u8 *ses_mac,
4022                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
4023                                     u8 conncap, int passwd_id,
4024                                     const u8 *persist_ssid,
4025                                     size_t persist_ssid_size, int response_done,
4026                                     int prov_start, const char *session_info,
4027                                     const u8 *feat_cap, size_t feat_cap_len,
4028                                     unsigned int freq,
4029                                     const u8 *group_ssid, size_t group_ssid_len)
4030 {
4031         struct wpa_supplicant *wpa_s = ctx;
4032         u8 mac[ETH_ALEN];
4033         struct wpa_ssid *persistent_go, *stale, *s = NULL;
4034         int save_config = 0;
4035         struct wpa_supplicant *go_wpa_s;
4036         char feat_cap_str[256];
4037
4038         if (!dev)
4039                 return;
4040
4041         os_memset(mac, 0, ETH_ALEN);
4042         if (!adv_mac)
4043                 adv_mac = mac;
4044         if (!ses_mac)
4045                 ses_mac = mac;
4046         if (!grp_mac)
4047                 grp_mac = mac;
4048
4049         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
4050                                    feat_cap, feat_cap_len);
4051
4052         if (prov_start) {
4053                 if (session_info == NULL) {
4054                         wpa_msg_global(wpa_s, MSG_INFO,
4055                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
4056                                        " adv_id=%x conncap=%x"
4057                                        " adv_mac=" MACSTR
4058                                        " session=%x mac=" MACSTR
4059                                        " dev_passwd_id=%d%s",
4060                                        MAC2STR(dev), adv_id, conncap,
4061                                        MAC2STR(adv_mac),
4062                                        ses_id, MAC2STR(ses_mac),
4063                                        passwd_id, feat_cap_str);
4064                 } else {
4065                         wpa_msg_global(wpa_s, MSG_INFO,
4066                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
4067                                        " adv_id=%x conncap=%x"
4068                                        " adv_mac=" MACSTR
4069                                        " session=%x mac=" MACSTR
4070                                        " dev_passwd_id=%d info='%s'%s",
4071                                        MAC2STR(dev), adv_id, conncap,
4072                                        MAC2STR(adv_mac),
4073                                        ses_id, MAC2STR(ses_mac),
4074                                        passwd_id, session_info, feat_cap_str);
4075                 }
4076                 return;
4077         }
4078
4079         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
4080         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4081
4082         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4083                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4084                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4085
4086                 if (persistent_go && !persistent_go->num_p2p_clients) {
4087                         /* remove empty persistent GO */
4088                         wpa_dbg(wpa_s, MSG_DEBUG,
4089                                 "P2P: Remove empty persistent group id=%d",
4090                                 persistent_go->id);
4091                         wpas_notify_persistent_group_removed(wpa_s,
4092                                                              persistent_go);
4093                         wpa_config_remove_network(wpa_s->conf,
4094                                                   persistent_go->id);
4095                 }
4096
4097                 wpa_msg_global(wpa_s, MSG_INFO,
4098                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4099                                " status=%d"
4100                                " adv_id=%x adv_mac=" MACSTR
4101                                " session=%x mac=" MACSTR "%s",
4102                                MAC2STR(dev), status,
4103                                adv_id, MAC2STR(adv_mac),
4104                                ses_id, MAC2STR(ses_mac), feat_cap_str);
4105                 return;
4106         }
4107
4108         /* Clean up stale persistent groups with this device */
4109         if (persist_ssid && persist_ssid_size)
4110                 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4111                                             persist_ssid_size);
4112
4113         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4114             is_zero_ether_addr(grp_mac)) {
4115                 wpa_dbg(wpa_s, MSG_ERROR,
4116                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4117                 return;
4118         }
4119
4120         for (;;) {
4121                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4122                 if (!stale)
4123                         break;
4124
4125                 if (s && s->ssid_len == stale->ssid_len &&
4126                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4127                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4128                         break;
4129
4130                 /* Remove stale persistent group */
4131                 if (stale->mode != WPAS_MODE_P2P_GO ||
4132                     stale->num_p2p_clients <= 1) {
4133                         wpa_dbg(wpa_s, MSG_DEBUG,
4134                                 "P2P: Remove stale persistent group id=%d",
4135                                 stale->id);
4136                         wpas_notify_persistent_group_removed(wpa_s, stale);
4137                         wpa_config_remove_network(wpa_s->conf, stale->id);
4138                 } else {
4139                         size_t i;
4140
4141                         for (i = 0; i < stale->num_p2p_clients; i++) {
4142                                 if (os_memcmp(stale->p2p_client_list +
4143                                               i * ETH_ALEN,
4144                                               dev, ETH_ALEN) == 0) {
4145                                         os_memmove(stale->p2p_client_list +
4146                                                    i * ETH_ALEN,
4147                                                    stale->p2p_client_list +
4148                                                    (i + 1) * ETH_ALEN,
4149                                                    (stale->num_p2p_clients -
4150                                                     i - 1) * ETH_ALEN);
4151                                         break;
4152                                 }
4153                         }
4154                         stale->num_p2p_clients--;
4155                 }
4156                 save_config = 1;
4157         }
4158
4159         if (save_config)
4160                 p2p_config_write(wpa_s);
4161
4162         if (s) {
4163                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4164                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4165
4166                 if (persistent_go && s != persistent_go &&
4167                     !persistent_go->num_p2p_clients) {
4168                         /* remove empty persistent GO */
4169                         wpa_dbg(wpa_s, MSG_DEBUG,
4170                                 "P2P: Remove empty persistent group id=%d",
4171                                 persistent_go->id);
4172                         wpas_notify_persistent_group_removed(wpa_s,
4173                                                              persistent_go);
4174                         wpa_config_remove_network(wpa_s->conf,
4175                                                   persistent_go->id);
4176                         /* Save config */
4177                 }
4178
4179                 wpa_msg_global(wpa_s, MSG_INFO,
4180                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4181                                " status=%d"
4182                                " adv_id=%x adv_mac=" MACSTR
4183                                " session=%x mac=" MACSTR
4184                                " persist=%d%s",
4185                                MAC2STR(dev), status,
4186                                adv_id, MAC2STR(adv_mac),
4187                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4188                 return;
4189         }
4190
4191         wpa_s->global->pending_p2ps_group = 0;
4192         wpa_s->global->pending_p2ps_group_freq = 0;
4193
4194         if (conncap == P2PS_SETUP_GROUP_OWNER) {
4195                 /*
4196                  * We need to copy the interface name. Simply saving a
4197                  * pointer isn't enough, since if we use pending_interface_name
4198                  * it will be overwritten when the group is added.
4199                  */
4200                 char go_ifname[100];
4201
4202                 go_ifname[0] = '\0';
4203                 if (!go_wpa_s) {
4204                         if (!response_done) {
4205                                 wpa_s->global->pending_p2ps_group = 1;
4206                                 wpa_s->global->pending_p2ps_group_freq = freq;
4207                         }
4208
4209                         if (!wpas_p2p_create_iface(wpa_s))
4210                                 os_memcpy(go_ifname, wpa_s->ifname,
4211                                           sizeof(go_ifname));
4212                         else if (wpa_s->pending_interface_name[0])
4213                                 os_memcpy(go_ifname,
4214                                           wpa_s->pending_interface_name,
4215                                           sizeof(go_ifname));
4216
4217                         if (!go_ifname[0]) {
4218                                 wpas_p2ps_prov_complete(
4219                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4220                                         dev, adv_mac, ses_mac,
4221                                         grp_mac, adv_id, ses_id, 0, 0,
4222                                         NULL, 0, 0, 0, NULL, NULL, 0, 0,
4223                                         NULL, 0);
4224                                 return;
4225                         }
4226
4227                         /* If PD Resp complete, start up the GO */
4228                         if (response_done && persistent_go) {
4229                                 wpas_p2p_group_add_persistent(
4230                                         wpa_s, persistent_go,
4231                                         0, 0, freq, 0, 0, 0, 0, 0, NULL,
4232                                         persistent_go->mode ==
4233                                         WPAS_MODE_P2P_GO ?
4234                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4235                                         0, 0);
4236                         } else if (response_done) {
4237                                 wpas_p2p_group_add(wpa_s, 1, freq,
4238                                                    0, 0, 0, 0, 0);
4239                         }
4240
4241                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4242                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4243                                           ETH_ALEN);
4244                                 wpa_s->p2ps_method_config_any = 1;
4245                         }
4246                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4247                         os_memcpy(go_ifname, go_wpa_s->ifname,
4248                                   sizeof(go_ifname));
4249
4250                         if (is_zero_ether_addr(grp_mac)) {
4251                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4252                                         "P2P: Setting PIN-1 for ANY");
4253                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4254                                                           "12345670", NULL, 0,
4255                                                           0);
4256                         } else {
4257                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4258                                         "P2P: Setting PIN-1 for " MACSTR,
4259                                         MAC2STR(grp_mac));
4260                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4261                                                           "12345670", NULL, 0,
4262                                                           0);
4263                         }
4264
4265                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4266                         wpa_s->p2ps_method_config_any = 1;
4267                 }
4268
4269                 wpa_msg_global(wpa_s, MSG_INFO,
4270                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4271                                " status=%d conncap=%x"
4272                                " adv_id=%x adv_mac=" MACSTR
4273                                " session=%x mac=" MACSTR
4274                                " dev_passwd_id=%d go=%s%s",
4275                                MAC2STR(dev), status, conncap,
4276                                adv_id, MAC2STR(adv_mac),
4277                                ses_id, MAC2STR(ses_mac),
4278                                passwd_id, go_ifname, feat_cap_str);
4279                 return;
4280         }
4281
4282         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4283                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4284
4285         if (persistent_go && !persistent_go->num_p2p_clients) {
4286                 /* remove empty persistent GO */
4287                 wpa_dbg(wpa_s, MSG_DEBUG,
4288                         "P2P: Remove empty persistent group id=%d",
4289                         persistent_go->id);
4290                 wpas_notify_persistent_group_removed(wpa_s, persistent_go);
4291                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4292         }
4293
4294         if (conncap == P2PS_SETUP_CLIENT) {
4295                 char ssid_hex[32 * 2 + 1];
4296
4297                 if (group_ssid)
4298                         wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex),
4299                                          group_ssid, group_ssid_len);
4300                 else
4301                         ssid_hex[0] = '\0';
4302                 wpa_msg_global(wpa_s, MSG_INFO,
4303                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4304                                " status=%d conncap=%x"
4305                                " adv_id=%x adv_mac=" MACSTR
4306                                " session=%x mac=" MACSTR
4307                                " dev_passwd_id=%d join=" MACSTR "%s%s%s",
4308                                MAC2STR(dev), status, conncap,
4309                                adv_id, MAC2STR(adv_mac),
4310                                ses_id, MAC2STR(ses_mac),
4311                                passwd_id, MAC2STR(grp_mac), feat_cap_str,
4312                                group_ssid ? " group_ssid=" : "", ssid_hex);
4313         } else {
4314                 wpa_msg_global(wpa_s, MSG_INFO,
4315                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4316                                " status=%d conncap=%x"
4317                                " adv_id=%x adv_mac=" MACSTR
4318                                " session=%x mac=" MACSTR
4319                                " dev_passwd_id=%d%s",
4320                                MAC2STR(dev), status, conncap,
4321                                adv_id, MAC2STR(adv_mac),
4322                                ses_id, MAC2STR(ses_mac),
4323                                passwd_id, feat_cap_str);
4324         }
4325 }
4326
4327
4328 static int _wpas_p2p_in_progress(void *ctx)
4329 {
4330         struct wpa_supplicant *wpa_s = ctx;
4331         return wpas_p2p_in_progress(wpa_s);
4332 }
4333
4334
4335 static int wpas_prov_disc_resp_cb(void *ctx)
4336 {
4337         struct wpa_supplicant *wpa_s = ctx;
4338         struct wpa_ssid *persistent_go;
4339         unsigned int freq;
4340
4341         if (!wpa_s->global->pending_p2ps_group)
4342                 return 0;
4343
4344         freq = wpa_s->global->pending_p2ps_group_freq;
4345         wpa_s->global->pending_p2ps_group_freq = 0;
4346         wpa_s->global->pending_p2ps_group = 0;
4347
4348         if (wpas_p2p_get_go_group(wpa_s))
4349                 return 0;
4350         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4351
4352         if (persistent_go) {
4353                 wpas_p2p_group_add_persistent(
4354                         wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, 0, NULL,
4355                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4356                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4357         } else {
4358                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0, 0);
4359         }
4360
4361         return 1;
4362 }
4363
4364
4365 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4366                                        unsigned int *len,
4367                                        unsigned int *freq_list)
4368 {
4369         struct wpa_supplicant *wpa_s = ctx;
4370
4371         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4372                                           WPA_IF_P2P_CLIENT, len, freq_list);
4373 }
4374
4375
4376 int wpas_p2p_mac_setup(struct wpa_supplicant *wpa_s)
4377 {
4378         u8 addr[ETH_ALEN] = {0};
4379
4380         if (wpa_s->conf->p2p_device_random_mac_addr == 0)
4381                 return 0;
4382
4383         if (!wpa_s->conf->ssid) {
4384                 if (random_mac_addr(addr) < 0) {
4385                         wpa_msg(wpa_s, MSG_INFO,
4386                                 "Failed to generate random MAC address");
4387                         return -EINVAL;
4388                 }
4389
4390                 /* Store generated MAC address. */
4391                 os_memcpy(wpa_s->conf->p2p_device_persistent_mac_addr, addr,
4392                           ETH_ALEN);
4393         } else {
4394                 /* If there are existing saved groups, restore last MAC address.
4395                  * if there is no last used MAC address, the last one is
4396                  * factory MAC. */
4397                 if (is_zero_ether_addr(
4398                             wpa_s->conf->p2p_device_persistent_mac_addr))
4399                         return 0;
4400                 os_memcpy(addr, wpa_s->conf->p2p_device_persistent_mac_addr,
4401                           ETH_ALEN);
4402                 wpa_msg(wpa_s, MSG_DEBUG, "Restore last used MAC address.");
4403         }
4404
4405         if (wpa_drv_set_mac_addr(wpa_s, addr) < 0) {
4406                 wpa_msg(wpa_s, MSG_INFO,
4407                         "Failed to set random MAC address");
4408                 return -EINVAL;
4409         }
4410
4411         if (wpa_supplicant_update_mac_addr(wpa_s) < 0) {
4412                 wpa_msg(wpa_s, MSG_INFO,
4413                         "Could not update MAC address information");
4414                 return -EINVAL;
4415         }
4416
4417         wpa_msg(wpa_s, MSG_DEBUG, "Using random MAC address " MACSTR,
4418                 MAC2STR(addr));
4419
4420         return 0;
4421 }
4422
4423
4424 /**
4425  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4426  * @global: Pointer to global data from wpa_supplicant_init()
4427  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4428  * Returns: 0 on success, -1 on failure
4429  */
4430 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4431 {
4432         struct p2p_config p2p;
4433         int i;
4434
4435         if (wpa_s->conf->p2p_disabled)
4436                 return 0;
4437
4438         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4439                 return 0;
4440
4441         if (global->p2p)
4442                 return 0;
4443
4444         if (wpas_p2p_mac_setup(wpa_s) < 0) {
4445                 wpa_msg(wpa_s, MSG_ERROR,
4446                         "Failed to initialize P2P random MAC address.");
4447                 return -1;
4448         }
4449
4450         os_memset(&p2p, 0, sizeof(p2p));
4451         p2p.cb_ctx = wpa_s;
4452         p2p.debug_print = wpas_p2p_debug_print;
4453         p2p.p2p_scan = wpas_p2p_scan;
4454         p2p.send_action = wpas_send_action;
4455         p2p.send_action_done = wpas_send_action_done;
4456         p2p.go_neg_completed = wpas_go_neg_completed;
4457         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4458         p2p.dev_found = wpas_dev_found;
4459         p2p.dev_lost = wpas_dev_lost;
4460         p2p.find_stopped = wpas_find_stopped;
4461         p2p.start_listen = wpas_start_listen;
4462         p2p.stop_listen = wpas_stop_listen;
4463         p2p.send_probe_resp = wpas_send_probe_resp;
4464         p2p.sd_request = wpas_sd_request;
4465         p2p.sd_response = wpas_sd_response;
4466         p2p.prov_disc_req = wpas_prov_disc_req;
4467         p2p.prov_disc_resp = wpas_prov_disc_resp;
4468         p2p.prov_disc_fail = wpas_prov_disc_fail;
4469         p2p.invitation_process = wpas_invitation_process;
4470         p2p.invitation_received = wpas_invitation_received;
4471         p2p.invitation_result = wpas_invitation_result;
4472         p2p.get_noa = wpas_get_noa;
4473         p2p.go_connected = wpas_go_connected;
4474         p2p.presence_resp = wpas_presence_resp;
4475         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4476         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4477         p2p.get_persistent_group = wpas_get_persistent_group;
4478         p2p.get_go_info = wpas_get_go_info;
4479         p2p.remove_stale_groups = wpas_remove_stale_groups;
4480         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4481         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4482         p2p.p2ps_group_capability = p2ps_group_capability;
4483         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4484
4485         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4486         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4487         p2p.dev_name = wpa_s->conf->device_name;
4488         p2p.manufacturer = wpa_s->conf->manufacturer;
4489         p2p.model_name = wpa_s->conf->model_name;
4490         p2p.model_number = wpa_s->conf->model_number;
4491         p2p.serial_number = wpa_s->conf->serial_number;
4492         if (wpa_s->wps) {
4493                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4494                 p2p.config_methods = wpa_s->wps->config_methods;
4495         }
4496
4497         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4498                 wpa_printf(MSG_ERROR,
4499                            "P2P: Failed to configure supported channel list");
4500                 return -1;
4501         }
4502
4503         if (wpa_s->conf->p2p_listen_reg_class &&
4504             wpa_s->conf->p2p_listen_channel) {
4505                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4506                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4507                 p2p.channel_forced = 1;
4508         } else {
4509                 /*
4510                  * Pick one of the social channels randomly as the listen
4511                  * channel.
4512                  */
4513                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4514                                                  &p2p.channel,
4515                                                  &global->p2p_go_avoid_freq,
4516                                                  &global->p2p_disallow_freq) !=
4517                     0) {
4518                         wpa_printf(MSG_INFO,
4519                                    "P2P: No social channels supported by the driver - do not enable P2P");
4520                         return 0;
4521                 }
4522                 p2p.channel_forced = 0;
4523         }
4524         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4525                    p2p.reg_class, p2p.channel);
4526
4527         if (wpa_s->conf->p2p_oper_reg_class &&
4528             wpa_s->conf->p2p_oper_channel) {
4529                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4530                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4531                 p2p.cfg_op_channel = 1;
4532                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4533                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4534
4535         } else {
4536                 /*
4537                  * Use random operation channel from 2.4 GHz band social
4538                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4539                  * other preference is indicated.
4540                  */
4541                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4542                                                  &p2p.op_channel, NULL,
4543                                                  NULL) != 0) {
4544                         wpa_printf(MSG_INFO,
4545                                    "P2P: Failed to select random social channel as operation channel");
4546                         p2p.op_reg_class = 0;
4547                         p2p.op_channel = 0;
4548                         /* This will be overridden during group setup in
4549                          * p2p_prepare_channel(), so allow setup to continue. */
4550                 }
4551                 p2p.cfg_op_channel = 0;
4552                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4553                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4554         }
4555
4556         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4557                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4558                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4559         }
4560
4561         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4562                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4563                 p2p.country[2] = 0x04;
4564         } else
4565                 os_memcpy(p2p.country, "XX\x04", 3);
4566
4567         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4568                   WPS_DEV_TYPE_LEN);
4569
4570         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4571         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4572                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4573
4574         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4575                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4576
4577         p2p.max_peers = 100;
4578
4579         if (wpa_s->conf->p2p_ssid_postfix) {
4580                 p2p.ssid_postfix_len =
4581                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4582                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4583                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4584                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4585                           p2p.ssid_postfix_len);
4586         }
4587
4588         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4589
4590         p2p.max_listen = wpa_s->max_remain_on_chan;
4591
4592         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4593             wpa_s->conf->p2p_passphrase_len <= 63)
4594                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4595         else
4596                 p2p.passphrase_len = 8;
4597
4598         global->p2p = p2p_init(&p2p);
4599         if (global->p2p == NULL)
4600                 return -1;
4601         global->p2p_init_wpa_s = wpa_s;
4602
4603         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4604                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4605                         continue;
4606                 p2p_add_wps_vendor_extension(
4607                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4608         }
4609
4610         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4611
4612         return 0;
4613 }
4614
4615
4616 /**
4617  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4618  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4619  *
4620  * This function deinitialize per-interface P2P data.
4621  */
4622 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4623 {
4624         if (wpa_s->driver && wpa_s->drv_priv)
4625                 wpa_drv_probe_req_report(wpa_s, 0);
4626
4627         if (wpa_s->go_params) {
4628                 /* Clear any stored provisioning info */
4629                 p2p_clear_provisioning_info(
4630                         wpa_s->global->p2p,
4631                         wpa_s->go_params->peer_device_addr);
4632         }
4633
4634         os_free(wpa_s->go_params);
4635         wpa_s->go_params = NULL;
4636         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4637         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4638         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4639         wpa_s->p2p_long_listen = 0;
4640         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4641         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4642         wpas_p2p_remove_pending_group_interface(wpa_s);
4643         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4644         wpas_p2p_listen_work_done(wpa_s);
4645         if (wpa_s->p2p_send_action_work) {
4646                 os_free(wpa_s->p2p_send_action_work->ctx);
4647                 radio_work_done(wpa_s->p2p_send_action_work);
4648                 wpa_s->p2p_send_action_work = NULL;
4649         }
4650         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4651
4652         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4653         wpa_s->p2p_oob_dev_pw = NULL;
4654
4655         os_free(wpa_s->p2p_group_common_freqs);
4656         wpa_s->p2p_group_common_freqs = NULL;
4657         wpa_s->p2p_group_common_freqs_num = 0;
4658
4659         /* TODO: remove group interface from the driver if this wpa_s instance
4660          * is on top of a P2P group interface */
4661 }
4662
4663
4664 /**
4665  * wpas_p2p_deinit_global - Deinitialize global P2P module
4666  * @global: Pointer to global data from wpa_supplicant_init()
4667  *
4668  * This function deinitializes the global (per device) P2P module.
4669  */
4670 static void wpas_p2p_deinit_global(struct wpa_global *global)
4671 {
4672         struct wpa_supplicant *wpa_s, *tmp;
4673
4674         wpa_s = global->ifaces;
4675
4676         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4677
4678         /* Remove remaining P2P group interfaces */
4679         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4680                 wpa_s = wpa_s->next;
4681         while (wpa_s) {
4682                 tmp = global->ifaces;
4683                 while (tmp &&
4684                        (tmp == wpa_s ||
4685                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4686                         tmp = tmp->next;
4687                 }
4688                 if (tmp == NULL)
4689                         break;
4690                 /* Disconnect from the P2P group and deinit the interface */
4691                 wpas_p2p_disconnect(tmp);
4692         }
4693
4694         /*
4695          * Deinit GO data on any possibly remaining interface (if main
4696          * interface is used as GO).
4697          */
4698         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4699                 if (wpa_s->ap_iface)
4700                         wpas_p2p_group_deinit(wpa_s);
4701         }
4702
4703         p2p_deinit(global->p2p);
4704         global->p2p = NULL;
4705         global->p2p_init_wpa_s = NULL;
4706 }
4707
4708
4709 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4710 {
4711         if (wpa_s->conf->p2p_no_group_iface)
4712                 return 0; /* separate interface disabled per configuration */
4713         if (wpa_s->drv_flags &
4714             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4715              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4716                 return 1; /* P2P group requires a new interface in every case
4717                            */
4718         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4719                 return 0; /* driver does not support concurrent operations */
4720         if (wpa_s->global->ifaces->next)
4721                 return 1; /* more that one interface already in use */
4722         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4723                 return 1; /* this interface is already in use */
4724         return 0;
4725 }
4726
4727
4728 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4729                                  const u8 *peer_addr,
4730                                  enum p2p_wps_method wps_method,
4731                                  int go_intent, const u8 *own_interface_addr,
4732                                  unsigned int force_freq, int persistent_group,
4733                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4734 {
4735         if (persistent_group && wpa_s->conf->persistent_reconnect)
4736                 persistent_group = 2;
4737
4738         /*
4739          * Increase GO config timeout if HT40 is used since it takes some time
4740          * to scan channels for coex purposes before the BSS can be started.
4741          */
4742         p2p_set_config_timeout(wpa_s->global->p2p,
4743                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4744
4745         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4746                            go_intent, own_interface_addr, force_freq,
4747                            persistent_group, ssid ? ssid->ssid : NULL,
4748                            ssid ? ssid->ssid_len : 0,
4749                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4750                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4751                            0);
4752 }
4753
4754
4755 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4756                                 const u8 *peer_addr,
4757                                 enum p2p_wps_method wps_method,
4758                                 int go_intent, const u8 *own_interface_addr,
4759                                 unsigned int force_freq, int persistent_group,
4760                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4761 {
4762         if (persistent_group && wpa_s->conf->persistent_reconnect)
4763                 persistent_group = 2;
4764
4765         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4766                              go_intent, own_interface_addr, force_freq,
4767                              persistent_group, ssid ? ssid->ssid : NULL,
4768                              ssid ? ssid->ssid_len : 0, pref_freq,
4769                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4770                              0);
4771 }
4772
4773
4774 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4775 {
4776         wpa_s->p2p_join_scan_count++;
4777         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4778                    wpa_s->p2p_join_scan_count);
4779         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4780                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4781                            " for join operationg - stop join attempt",
4782                            MAC2STR(wpa_s->pending_join_iface_addr));
4783                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4784                 if (wpa_s->p2p_auto_pd) {
4785                         wpa_s->p2p_auto_pd = 0;
4786                         wpa_msg_global(wpa_s, MSG_INFO,
4787                                        P2P_EVENT_PROV_DISC_FAILURE
4788                                        " p2p_dev_addr=" MACSTR " status=N/A",
4789                                        MAC2STR(wpa_s->pending_join_dev_addr));
4790                         return;
4791                 }
4792                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4793                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4794                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4795         }
4796 }
4797
4798
4799 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4800 {
4801         int res;
4802         unsigned int num, i;
4803         struct wpa_used_freq_data *freqs;
4804
4805         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4806                 /* Multiple channels are supported and not all are in use */
4807                 return 0;
4808         }
4809
4810         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4811                           sizeof(struct wpa_used_freq_data));
4812         if (!freqs)
4813                 return 1;
4814
4815         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4816                                         wpa_s->num_multichan_concurrent);
4817
4818         for (i = 0; i < num; i++) {
4819                 if (freqs[i].freq == freq) {
4820                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4821                                    freq);
4822                         res = 0;
4823                         goto exit_free;
4824                 }
4825         }
4826
4827         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4828         res = 1;
4829
4830 exit_free:
4831         os_free(freqs);
4832         return res;
4833 }
4834
4835
4836 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4837                             const u8 *peer_dev_addr)
4838 {
4839         struct wpa_bss *bss;
4840         int updated;
4841
4842         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4843         if (bss == NULL)
4844                 return -1;
4845         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4846                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4847                            "last scan");
4848                 return 0;
4849         }
4850
4851         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4852                                     &bss->last_update);
4853         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4854                    "%ld.%06ld (%supdated in last scan)",
4855                    bss->last_update.sec, bss->last_update.usec,
4856                    updated ? "": "not ");
4857
4858         return updated;
4859 }
4860
4861
4862 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4863                                    struct wpa_scan_results *scan_res)
4864 {
4865         struct wpa_bss *bss = NULL;
4866         int freq;
4867         u8 iface_addr[ETH_ALEN];
4868
4869         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4870
4871         if (wpa_s->global->p2p_disabled)
4872                 return;
4873
4874         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4875                    scan_res ? (int) scan_res->num : -1,
4876                    wpa_s->p2p_auto_join ? "auto_" : "");
4877
4878         if (scan_res)
4879                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4880
4881         if (wpa_s->p2p_auto_pd) {
4882                 int join = wpas_p2p_peer_go(wpa_s,
4883                                             wpa_s->pending_join_dev_addr);
4884                 if (join == 0 &&
4885                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4886                         wpa_s->auto_pd_scan_retry++;
4887                         bss = wpa_bss_get_bssid_latest(
4888                                 wpa_s, wpa_s->pending_join_dev_addr);
4889                         if (bss) {
4890                                 freq = bss->freq;
4891                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4892                                            "the peer " MACSTR " at %d MHz",
4893                                            wpa_s->auto_pd_scan_retry,
4894                                            MAC2STR(wpa_s->
4895                                                    pending_join_dev_addr),
4896                                            freq);
4897                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4898                                 return;
4899                         }
4900                 }
4901
4902                 if (join < 0)
4903                         join = 0;
4904
4905                 wpa_s->p2p_auto_pd = 0;
4906                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4907                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4908                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4909                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4910                                       wpa_s->pending_join_dev_addr, NULL,
4911                                       wpa_s->pending_pd_config_methods, join,
4912                                       0, wpa_s->user_initiated_pd) < 0) {
4913                         wpa_s->p2p_auto_pd = 0;
4914                         wpa_msg_global(wpa_s, MSG_INFO,
4915                                        P2P_EVENT_PROV_DISC_FAILURE
4916                                        " p2p_dev_addr=" MACSTR " status=N/A",
4917                                        MAC2STR(wpa_s->pending_join_dev_addr));
4918                 }
4919                 return;
4920         }
4921
4922         if (wpa_s->p2p_auto_join) {
4923                 int join = wpas_p2p_peer_go(wpa_s,
4924                                             wpa_s->pending_join_dev_addr);
4925                 if (join < 0) {
4926                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4927                                    "running a GO -> use GO Negotiation");
4928                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4929                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4930                                        "reason=peer-not-running-GO");
4931                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4932                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4933                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4934                                          wpa_s->p2p_go_intent,
4935                                          wpa_s->p2p_connect_freq,
4936                                          wpa_s->p2p_go_vht_center_freq2,
4937                                          wpa_s->p2p_persistent_id,
4938                                          wpa_s->p2p_pd_before_go_neg,
4939                                          wpa_s->p2p_go_ht40,
4940                                          wpa_s->p2p_go_vht,
4941                                          wpa_s->p2p_go_max_oper_chwidth,
4942                                          wpa_s->p2p_go_he,
4943                                          NULL, 0);
4944                         return;
4945                 }
4946
4947                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4948                            "try to join the group", join ? "" :
4949                            " in older scan");
4950                 if (!join) {
4951                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4952                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4953                         wpa_s->p2p_fallback_to_go_neg = 1;
4954                 }
4955         }
4956
4957         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4958                                  wpa_s->pending_join_iface_addr);
4959         if (freq < 0 &&
4960             p2p_get_interface_addr(wpa_s->global->p2p,
4961                                    wpa_s->pending_join_dev_addr,
4962                                    iface_addr) == 0 &&
4963             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4964             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4965                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4966                            "address for join from " MACSTR " to " MACSTR
4967                            " based on newly discovered P2P peer entry",
4968                            MAC2STR(wpa_s->pending_join_iface_addr),
4969                            MAC2STR(iface_addr));
4970                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4971                           ETH_ALEN);
4972
4973                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4974                                          wpa_s->pending_join_iface_addr);
4975         }
4976         if (freq >= 0) {
4977                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4978                            "from P2P peer table: %d MHz", freq);
4979         }
4980         if (wpa_s->p2p_join_ssid_len) {
4981                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4982                            MACSTR " and SSID %s",
4983                            MAC2STR(wpa_s->pending_join_iface_addr),
4984                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4985                                         wpa_s->p2p_join_ssid_len));
4986                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4987                                   wpa_s->p2p_join_ssid,
4988                                   wpa_s->p2p_join_ssid_len);
4989         } else if (!bss) {
4990                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4991                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4992                 bss = wpa_bss_get_bssid_latest(wpa_s,
4993                                                wpa_s->pending_join_iface_addr);
4994         }
4995         if (bss) {
4996                 u8 dev_addr[ETH_ALEN];
4997
4998                 freq = bss->freq;
4999                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
5000                            "from BSS table: %d MHz (SSID %s)", freq,
5001                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
5002                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
5003                                        dev_addr) == 0 &&
5004                     os_memcmp(wpa_s->pending_join_dev_addr,
5005                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
5006                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
5007                               ETH_ALEN) != 0) {
5008                         wpa_printf(MSG_DEBUG,
5009                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
5010                                    MAC2STR(dev_addr),
5011                                    MAC2STR(wpa_s->pending_join_dev_addr));
5012                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
5013                                   ETH_ALEN);
5014                 }
5015         }
5016         if (freq > 0) {
5017                 u16 method;
5018
5019                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
5020                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
5021                                        P2P_EVENT_GROUP_FORMATION_FAILURE
5022                                        "reason=FREQ_CONFLICT");
5023                         wpas_notify_p2p_group_formation_failure(
5024                                 wpa_s, "FREQ_CONFLICT");
5025                         return;
5026                 }
5027
5028                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
5029                            "prior to joining an existing group (GO " MACSTR
5030                            " freq=%u MHz)",
5031                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
5032                 wpa_s->pending_pd_before_join = 1;
5033
5034                 switch (wpa_s->pending_join_wps_method) {
5035                 case WPS_PIN_DISPLAY:
5036                         method = WPS_CONFIG_KEYPAD;
5037                         break;
5038                 case WPS_PIN_KEYPAD:
5039                         method = WPS_CONFIG_DISPLAY;
5040                         break;
5041                 case WPS_PBC:
5042                         method = WPS_CONFIG_PUSHBUTTON;
5043                         break;
5044                 case WPS_P2PS:
5045                         method = WPS_CONFIG_P2PS;
5046                         break;
5047                 default:
5048                         method = 0;
5049                         break;
5050                 }
5051
5052                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
5053                                                wpa_s->pending_join_dev_addr) ==
5054                      method)) {
5055                         /*
5056                          * We have already performed provision discovery for
5057                          * joining the group. Proceed directly to join
5058                          * operation without duplicated provision discovery. */
5059                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
5060                                    "with " MACSTR " already done - proceed to "
5061                                    "join",
5062                                    MAC2STR(wpa_s->pending_join_dev_addr));
5063                         wpa_s->pending_pd_before_join = 0;
5064                         goto start;
5065                 }
5066
5067                 if (p2p_prov_disc_req(wpa_s->global->p2p,
5068                                       wpa_s->pending_join_dev_addr,
5069                                       NULL, method, 1,
5070                                       freq, wpa_s->user_initiated_pd) < 0) {
5071                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
5072                                    "Discovery Request before joining an "
5073                                    "existing group");
5074                         wpa_s->pending_pd_before_join = 0;
5075                         goto start;
5076                 }
5077                 return;
5078         }
5079
5080         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
5081         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5082         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5083         wpas_p2p_check_join_scan_limit(wpa_s);
5084         return;
5085
5086 start:
5087         /* Start join operation immediately */
5088         wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid,
5089                             wpa_s->p2p_join_ssid_len);
5090 }
5091
5092
5093 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
5094                                    const u8 *ssid, size_t ssid_len)
5095 {
5096         int ret;
5097         struct wpa_driver_scan_params params;
5098         struct wpabuf *wps_ie, *ies;
5099         size_t ielen;
5100         int freqs[2] = { 0, 0 };
5101         unsigned int bands;
5102
5103         os_memset(&params, 0, sizeof(params));
5104
5105         /* P2P Wildcard SSID */
5106         params.num_ssids = 1;
5107         if (ssid && ssid_len) {
5108                 params.ssids[0].ssid = ssid;
5109                 params.ssids[0].ssid_len = ssid_len;
5110                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
5111                 wpa_s->p2p_join_ssid_len = ssid_len;
5112         } else {
5113                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
5114                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
5115                 wpa_s->p2p_join_ssid_len = 0;
5116         }
5117
5118         wpa_s->wps->dev.p2p = 1;
5119         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
5120                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
5121                                         NULL);
5122         if (wps_ie == NULL) {
5123                 wpas_p2p_scan_res_join(wpa_s, NULL);
5124                 return;
5125         }
5126
5127         if (!freq) {
5128                 int oper_freq;
5129                 /*
5130                  * If freq is not provided, check the operating freq of the GO
5131                  * and use a single channel scan on if possible.
5132                  */
5133                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
5134                                               wpa_s->pending_join_iface_addr);
5135                 if (oper_freq > 0)
5136                         freq = oper_freq;
5137         }
5138         if (freq > 0) {
5139                 freqs[0] = freq;
5140                 params.freqs = freqs;
5141         }
5142
5143         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
5144         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
5145         if (ies == NULL) {
5146                 wpabuf_free(wps_ie);
5147                 wpas_p2p_scan_res_join(wpa_s, NULL);
5148                 return;
5149         }
5150         wpabuf_put_buf(ies, wps_ie);
5151         wpabuf_free(wps_ie);
5152
5153         bands = wpas_get_bands(wpa_s, freqs);
5154         p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
5155
5156         params.p2p_probe = 1;
5157         params.extra_ies = wpabuf_head(ies);
5158         params.extra_ies_len = wpabuf_len(ies);
5159
5160         if (wpa_s->clear_driver_scan_cache) {
5161                 wpa_printf(MSG_DEBUG,
5162                            "Request driver to clear scan cache due to local BSS flush");
5163                 params.only_new_results = 1;
5164         }
5165
5166         /*
5167          * Run a scan to update BSS table and start Provision Discovery once
5168          * the new scan results become available.
5169          */
5170         ret = wpa_drv_scan(wpa_s, &params);
5171         if (!ret) {
5172                 os_get_reltime(&wpa_s->scan_trigger_time);
5173                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
5174                 wpa_s->own_scan_requested = 1;
5175                 wpa_s->clear_driver_scan_cache = 0;
5176         }
5177
5178         wpabuf_free(ies);
5179
5180         if (ret) {
5181                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5182                            "try again later");
5183                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5184                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5185                 wpas_p2p_check_join_scan_limit(wpa_s);
5186         }
5187 }
5188
5189
5190 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5191 {
5192         struct wpa_supplicant *wpa_s = eloop_ctx;
5193         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5194 }
5195
5196
5197 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5198                          const u8 *dev_addr, enum p2p_wps_method wps_method,
5199                          int auto_join, int op_freq,
5200                          const u8 *ssid, size_t ssid_len)
5201 {
5202         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5203                    MACSTR " dev " MACSTR " op_freq=%d)%s",
5204                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5205                    auto_join ? " (auto_join)" : "");
5206         if (ssid && ssid_len) {
5207                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5208                            wpa_ssid_txt(ssid, ssid_len));
5209         }
5210
5211         wpa_s->p2p_auto_pd = 0;
5212         wpa_s->p2p_auto_join = !!auto_join;
5213         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5214         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5215         wpa_s->pending_join_wps_method = wps_method;
5216
5217         /* Make sure we are not running find during connection establishment */
5218         wpas_p2p_stop_find(wpa_s);
5219
5220         wpa_s->p2p_join_scan_count = 0;
5221         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5222         return 0;
5223 }
5224
5225
5226 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5227                                const u8 *ssid, size_t ssid_len)
5228 {
5229         struct wpa_supplicant *group;
5230         struct p2p_go_neg_results res;
5231         struct wpa_bss *bss;
5232
5233         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5234         if (group == NULL)
5235                 return -1;
5236         if (group != wpa_s) {
5237                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5238                           sizeof(group->p2p_pin));
5239                 group->p2p_wps_method = wpa_s->p2p_wps_method;
5240         }
5241
5242         /*
5243          * Need to mark the current interface for p2p_group_formation
5244          * when a separate group interface is not used. This is needed
5245          * to allow p2p_cancel stop a pending p2p_connect-join.
5246          * wpas_p2p_init_group_interface() addresses this for the case
5247          * where a separate group interface is used.
5248          */
5249         if (group == wpa_s->parent)
5250                 wpa_s->global->p2p_group_formation = group;
5251
5252         group->p2p_in_provisioning = 1;
5253         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5254
5255         os_memset(&res, 0, sizeof(res));
5256         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5257         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5258                   ETH_ALEN);
5259         res.wps_method = wpa_s->pending_join_wps_method;
5260         if (freq && ssid && ssid_len) {
5261                 res.freq = freq;
5262                 res.ssid_len = ssid_len;
5263                 os_memcpy(res.ssid, ssid, ssid_len);
5264         } else {
5265                 if (ssid && ssid_len) {
5266                         bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
5267                                           ssid, ssid_len);
5268                 } else {
5269                         bss = wpa_bss_get_bssid_latest(
5270                                 wpa_s, wpa_s->pending_join_iface_addr);
5271                 }
5272                 if (bss) {
5273                         res.freq = bss->freq;
5274                         res.ssid_len = bss->ssid_len;
5275                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5276                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5277                                    bss->freq,
5278                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
5279                 } else if (ssid && ssid_len) {
5280                         res.ssid_len = ssid_len;
5281                         os_memcpy(res.ssid, ssid, ssid_len);
5282                         wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)",
5283                                    wpa_ssid_txt(ssid, ssid_len));
5284                 }
5285         }
5286
5287         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5288                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5289                            "starting client");
5290                 wpa_drv_cancel_remain_on_channel(wpa_s);
5291                 wpa_s->off_channel_freq = 0;
5292                 wpa_s->roc_waiting_drv_freq = 0;
5293         }
5294         wpas_start_wps_enrollee(group, &res);
5295
5296         /*
5297          * Allow a longer timeout for join-a-running-group than normal 15
5298          * second group formation timeout since the GO may not have authorized
5299          * our connection yet.
5300          */
5301         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5302         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5303                                wpa_s, NULL);
5304
5305         return 0;
5306 }
5307
5308
5309 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5310                                 int *force_freq, int *pref_freq, int go,
5311                                 unsigned int *pref_freq_list,
5312                                 unsigned int *num_pref_freq)
5313 {
5314         struct wpa_used_freq_data *freqs;
5315         int res, best_freq, num_unused;
5316         unsigned int freq_in_use = 0, num, i, max_pref_freq;
5317
5318         max_pref_freq = *num_pref_freq;
5319         *num_pref_freq = 0;
5320
5321         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5322                           sizeof(struct wpa_used_freq_data));
5323         if (!freqs)
5324                 return -1;
5325
5326         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5327                                         wpa_s->num_multichan_concurrent);
5328
5329         /*
5330          * It is possible that the total number of used frequencies is bigger
5331          * than the number of frequencies used for P2P, so get the system wide
5332          * number of unused frequencies.
5333          */
5334         num_unused = wpas_p2p_num_unused_channels(wpa_s);
5335
5336         wpa_printf(MSG_DEBUG,
5337                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5338                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
5339
5340         if (freq > 0) {
5341                 int ret;
5342                 if (go)
5343                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5344                 else
5345                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5346                 if (!ret) {
5347                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5348                             ieee80211_is_dfs(freq, wpa_s->hw.modes,
5349                                              wpa_s->hw.num_modes)) {
5350                                 /*
5351                                  * If freq is a DFS channel and DFS is offloaded
5352                                  * to the driver, allow P2P GO to use it.
5353                                  */
5354                                 wpa_printf(MSG_DEBUG,
5355                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5356                                            freq);
5357                         } else {
5358                                 wpa_printf(MSG_DEBUG,
5359                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5360                                            freq);
5361                                 res = -3;
5362                                 goto exit_free;
5363                         }
5364                 }
5365
5366                 for (i = 0; i < num; i++) {
5367                         if (freqs[i].freq == freq)
5368                                 freq_in_use = 1;
5369                 }
5370
5371                 if (num_unused <= 0 && !freq_in_use) {
5372                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5373                                    freq);
5374                         res = -2;
5375                         goto exit_free;
5376                 }
5377                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5378                            "requested channel (%u MHz)", freq);
5379                 *force_freq = freq;
5380                 goto exit_ok;
5381         }
5382
5383         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5384
5385         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5386                 enum wpa_driver_if_type iface_type;
5387
5388                 if (go)
5389                         iface_type = WPA_IF_P2P_GO;
5390                 else
5391                         iface_type = WPA_IF_P2P_CLIENT;
5392
5393                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5394                            best_freq, go);
5395
5396                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5397                                                  &max_pref_freq,
5398                                                  pref_freq_list);
5399                 if (!res && max_pref_freq > 0) {
5400                         *num_pref_freq = max_pref_freq;
5401                         i = 0;
5402                         while (i < *num_pref_freq &&
5403                                (!p2p_supported_freq(wpa_s->global->p2p,
5404                                                     pref_freq_list[i]) ||
5405                                 wpas_p2p_disallowed_freq(wpa_s->global,
5406                                                          pref_freq_list[i]))) {
5407                                 wpa_printf(MSG_DEBUG,
5408                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5409                                            i, pref_freq_list[i]);
5410                                 i++;
5411                         }
5412                         if (i != *num_pref_freq) {
5413                                 best_freq = pref_freq_list[i];
5414                                 wpa_printf(MSG_DEBUG,
5415                                            "P2P: Using preferred_freq_list[%d]=%d",
5416                                            i, best_freq);
5417                         } else {
5418                                 wpa_printf(MSG_DEBUG,
5419                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5420                                 *num_pref_freq = 0;
5421                         }
5422                 } else {
5423                         wpa_printf(MSG_DEBUG,
5424                                    "P2P: No preferred frequency list available");
5425                 }
5426         }
5427
5428         /* We have a candidate frequency to use */
5429         if (best_freq > 0) {
5430                 if (*pref_freq == 0 && num_unused > 0) {
5431                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5432                                    best_freq);
5433                         *pref_freq = best_freq;
5434                 } else {
5435                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5436                                    best_freq);
5437                         *force_freq = best_freq;
5438                 }
5439         } else if (num_unused > 0) {
5440                 wpa_printf(MSG_DEBUG,
5441                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5442                 *force_freq = 0;
5443         } else {
5444                 wpa_printf(MSG_DEBUG,
5445                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5446                 res = -2;
5447                 goto exit_free;
5448         }
5449
5450 exit_ok:
5451         res = 0;
5452 exit_free:
5453         os_free(freqs);
5454         return res;
5455 }
5456
5457
5458 /**
5459  * wpas_p2p_connect - Request P2P Group Formation to be started
5460  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5461  * @peer_addr: Address of the peer P2P Device
5462  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5463  * @persistent_group: Whether to create a persistent group
5464  * @auto_join: Whether to select join vs. GO Negotiation automatically
5465  * @join: Whether to join an existing group (as a client) instead of starting
5466  *      Group Owner negotiation; @peer_addr is BSSID in that case
5467  * @auth: Whether to only authorize the connection instead of doing that and
5468  *      initiating Group Owner negotiation
5469  * @go_intent: GO Intent or -1 to use default
5470  * @freq: Frequency for the group or 0 for auto-selection
5471  * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5472  * @persistent_id: Persistent group credentials to use for forcing GO
5473  *      parameters or -1 to generate new values (SSID/passphrase)
5474  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5475  *      interoperability workaround when initiating group formation
5476  * @ht40: Start GO with 40 MHz channel width
5477  * @vht:  Start GO with VHT support
5478  * @vht_chwidth: Channel width supported by GO operating with VHT support
5479  *      (VHT_CHANWIDTH_*).
5480  * @group_ssid: Specific Group SSID for join or %NULL if not set
5481  * @group_ssid_len: Length of @group_ssid in octets
5482  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5483  *      failure, -2 on failure due to channel not currently available,
5484  *      -3 if forced channel is not supported
5485  */
5486 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5487                      const char *pin, enum p2p_wps_method wps_method,
5488                      int persistent_group, int auto_join, int join, int auth,
5489                      int go_intent, int freq, unsigned int vht_center_freq2,
5490                      int persistent_id, int pd, int ht40, int vht,
5491                      unsigned int vht_chwidth, int he, const u8 *group_ssid,
5492                      size_t group_ssid_len)
5493 {
5494         int force_freq = 0, pref_freq = 0;
5495         int ret = 0, res;
5496         enum wpa_driver_if_type iftype;
5497         const u8 *if_addr;
5498         struct wpa_ssid *ssid = NULL;
5499         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5500
5501         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5502                 return -1;
5503
5504         if (persistent_id >= 0) {
5505                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5506                 if (ssid == NULL || ssid->disabled != 2 ||
5507                     ssid->mode != WPAS_MODE_P2P_GO)
5508                         return -1;
5509         }
5510
5511         os_free(wpa_s->global->add_psk);
5512         wpa_s->global->add_psk = NULL;
5513
5514         wpa_s->global->p2p_fail_on_wps_complete = 0;
5515         wpa_s->global->pending_p2ps_group = 0;
5516         wpa_s->global->pending_p2ps_group_freq = 0;
5517         wpa_s->p2ps_method_config_any = 0;
5518
5519         if (go_intent < 0)
5520                 go_intent = wpa_s->conf->p2p_go_intent;
5521
5522         if (!auth)
5523                 wpa_s->p2p_long_listen = 0;
5524
5525         wpa_s->p2p_wps_method = wps_method;
5526         wpa_s->p2p_persistent_group = !!persistent_group;
5527         wpa_s->p2p_persistent_id = persistent_id;
5528         wpa_s->p2p_go_intent = go_intent;
5529         wpa_s->p2p_connect_freq = freq;
5530         wpa_s->p2p_fallback_to_go_neg = 0;
5531         wpa_s->p2p_pd_before_go_neg = !!pd;
5532         wpa_s->p2p_go_ht40 = !!ht40;
5533         wpa_s->p2p_go_vht = !!vht;
5534         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5535         wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5536         wpa_s->p2p_go_he = !!he;
5537
5538         if (pin)
5539                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5540         else if (wps_method == WPS_PIN_DISPLAY) {
5541                 if (wps_generate_pin((unsigned int *) &ret) < 0)
5542                         return -1;
5543                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5544                                   "%08d", ret);
5545                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5546                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5547                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5548                            wpa_s->p2p_pin);
5549         } else if (wps_method == WPS_P2PS) {
5550                 /* Force the P2Ps default PIN to be used */
5551                 os_strlcpy(wpa_s->p2p_pin, "12345670", sizeof(wpa_s->p2p_pin));
5552         } else
5553                 wpa_s->p2p_pin[0] = '\0';
5554
5555         if (join || auto_join) {
5556                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5557                 if (auth) {
5558                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5559                                    "connect a running group from " MACSTR,
5560                                    MAC2STR(peer_addr));
5561                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5562                         return ret;
5563                 }
5564                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5565                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5566                                            iface_addr) < 0) {
5567                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5568                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5569                                          dev_addr);
5570                 }
5571                 if (auto_join) {
5572                         os_get_reltime(&wpa_s->p2p_auto_started);
5573                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5574                                    "%ld.%06ld",
5575                                    wpa_s->p2p_auto_started.sec,
5576                                    wpa_s->p2p_auto_started.usec);
5577                 }
5578                 wpa_s->user_initiated_pd = 1;
5579                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5580                                   auto_join, freq,
5581                                   group_ssid, group_ssid_len) < 0)
5582                         return -1;
5583                 return ret;
5584         }
5585
5586         size = P2P_MAX_PREF_CHANNELS;
5587         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5588                                    go_intent == 15, pref_freq_list, &size);
5589         if (res)
5590                 return res;
5591         wpas_p2p_set_own_freq_preference(wpa_s,
5592                                          force_freq ? force_freq : pref_freq);
5593
5594         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5595
5596         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5597
5598         if (wpa_s->create_p2p_iface) {
5599                 /* Prepare to add a new interface for the group */
5600                 iftype = WPA_IF_P2P_GROUP;
5601                 if (go_intent == 15)
5602                         iftype = WPA_IF_P2P_GO;
5603                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5604                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5605                                    "interface for the group");
5606                         return -1;
5607                 }
5608
5609                 if_addr = wpa_s->pending_interface_addr;
5610         } else {
5611                 if (wpa_s->p2p_mgmt)
5612                         if_addr = wpa_s->parent->own_addr;
5613                 else
5614                         if_addr = wpa_s->own_addr;
5615                 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5616         }
5617
5618         if (auth) {
5619                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5620                                          go_intent, if_addr,
5621                                          force_freq, persistent_group, ssid,
5622                                          pref_freq) < 0)
5623                         return -1;
5624                 return ret;
5625         }
5626
5627         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5628                                   go_intent, if_addr, force_freq,
5629                                   persistent_group, ssid, pref_freq) < 0) {
5630                 if (wpa_s->create_p2p_iface)
5631                         wpas_p2p_remove_pending_group_interface(wpa_s);
5632                 return -1;
5633         }
5634         return ret;
5635 }
5636
5637
5638 /**
5639  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5640  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5641  * @freq: Frequency of the channel in MHz
5642  * @duration: Duration of the stay on the channel in milliseconds
5643  *
5644  * This callback is called when the driver indicates that it has started the
5645  * requested remain-on-channel duration.
5646  */
5647 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5648                                    unsigned int freq, unsigned int duration)
5649 {
5650         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5651                 return;
5652         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)",
5653                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5654                    wpa_s->roc_waiting_drv_freq, freq, duration);
5655         if (wpa_s->off_channel_freq &&
5656             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5657                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5658                               wpa_s->pending_listen_duration);
5659                 wpa_s->pending_listen_freq = 0;
5660         } else {
5661                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5662                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5663                            freq, duration);
5664         }
5665 }
5666
5667
5668 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5669 {
5670         /* Limit maximum Listen state time based on driver limitation. */
5671         if (timeout > wpa_s->max_remain_on_chan)
5672                 timeout = wpa_s->max_remain_on_chan;
5673
5674         return p2p_listen(wpa_s->global->p2p, timeout);
5675 }
5676
5677
5678 /**
5679  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5680  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5681  * @freq: Frequency of the channel in MHz
5682  *
5683  * This callback is called when the driver indicates that a remain-on-channel
5684  * operation has been completed, i.e., the duration on the requested channel
5685  * has timed out.
5686  */
5687 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5688                                           unsigned int freq)
5689 {
5690         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5691                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5692                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5693         wpas_p2p_listen_work_done(wpa_s);
5694         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5695                 return;
5696         if (wpa_s->p2p_long_listen > 0)
5697                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5698         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5699                 return; /* P2P module started a new operation */
5700         if (offchannel_pending_action_tx(wpa_s))
5701                 return;
5702         if (wpa_s->p2p_long_listen > 0) {
5703                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5704                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5705         } else {
5706                 /*
5707                  * When listen duration is over, stop listen & update p2p_state
5708                  * to IDLE.
5709                  */
5710                 p2p_stop_listen(wpa_s->global->p2p);
5711         }
5712 }
5713
5714
5715 /**
5716  * wpas_p2p_group_remove - Remove a P2P group
5717  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5718  * @ifname: Network interface name of the group interface or "*" to remove all
5719  *      groups
5720  * Returns: 0 on success, -1 on failure
5721  *
5722  * This function is used to remove a P2P group. This can be used to disconnect
5723  * from a group in which the local end is a P2P Client or to end a P2P Group in
5724  * case the local end is the Group Owner. If a virtual network interface was
5725  * created for this group, that interface will be removed. Otherwise, only the
5726  * configured P2P group network will be removed from the interface.
5727  */
5728 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5729 {
5730         struct wpa_global *global = wpa_s->global;
5731         struct wpa_supplicant *calling_wpa_s = wpa_s;
5732
5733         if (os_strcmp(ifname, "*") == 0) {
5734                 struct wpa_supplicant *prev;
5735                 wpa_s = global->ifaces;
5736                 while (wpa_s) {
5737                         prev = wpa_s;
5738                         wpa_s = wpa_s->next;
5739                         if (prev->p2p_group_interface !=
5740                             NOT_P2P_GROUP_INTERFACE ||
5741                             (prev->current_ssid &&
5742                              prev->current_ssid->p2p_group))
5743                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5744                 }
5745                 return 0;
5746         }
5747
5748         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5749                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5750                         break;
5751         }
5752
5753         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5754 }
5755
5756
5757 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5758 {
5759         unsigned int r;
5760
5761         if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5762                 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5763                 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5764                 int res;
5765
5766                 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5767                                                  &size, pref_freq_list);
5768                 if (!res && size > 0) {
5769                         i = 0;
5770                         while (i < size &&
5771                                (!p2p_supported_freq(wpa_s->global->p2p,
5772                                                     pref_freq_list[i]) ||
5773                                 wpas_p2p_disallowed_freq(wpa_s->global,
5774                                                          pref_freq_list[i]))) {
5775                                 wpa_printf(MSG_DEBUG,
5776                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5777                                            i, pref_freq_list[i]);
5778                                 i++;
5779                         }
5780                         if (i != size) {
5781                                 freq = pref_freq_list[i];
5782                                 wpa_printf(MSG_DEBUG,
5783                                            "P2P: Using preferred_freq_list[%d]=%d",
5784                                            i, freq);
5785                         } else {
5786                                 wpa_printf(MSG_DEBUG,
5787                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5788                         }
5789                 } else {
5790                         wpa_printf(MSG_DEBUG,
5791                                    "P2P: No preferred frequency list available");
5792                 }
5793         }
5794
5795         if (freq == 2) {
5796                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5797                            "band");
5798                 if (wpa_s->best_24_freq > 0 &&
5799                     p2p_supported_freq_go(wpa_s->global->p2p,
5800                                           wpa_s->best_24_freq)) {
5801                         freq = wpa_s->best_24_freq;
5802                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5803                                    "channel: %d MHz", freq);
5804                 } else {
5805                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5806                                 return -1;
5807                         freq = 2412 + (r % 3) * 25;
5808                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5809                                    "channel: %d MHz", freq);
5810                 }
5811         }
5812
5813         if (freq == 5) {
5814                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5815                            "band");
5816                 if (wpa_s->best_5_freq > 0 &&
5817                     p2p_supported_freq_go(wpa_s->global->p2p,
5818                                        wpa_s->best_5_freq)) {
5819                         freq = wpa_s->best_5_freq;
5820                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5821                                    "channel: %d MHz", freq);
5822                 } else {
5823                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5824                                 return -1;
5825                         freq = 5180 + (r % 4) * 20;
5826                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5827                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5828                                            "5 GHz channel for P2P group");
5829                                 return -1;
5830                         }
5831                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5832                                    "channel: %d MHz", freq);
5833                 }
5834         }
5835
5836         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5837                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5838                     ieee80211_is_dfs(freq, wpa_s->hw.modes,
5839                                      wpa_s->hw.num_modes)) {
5840                         /*
5841                          * If freq is a DFS channel and DFS is offloaded to the
5842                          * driver, allow P2P GO to use it.
5843                          */
5844                         wpa_printf(MSG_DEBUG, "P2P: "
5845                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5846                                    __func__, freq);
5847                         return freq;
5848                 }
5849                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5850                            "(%u MHz) is not supported for P2P uses",
5851                            freq);
5852                 return -1;
5853         }
5854
5855         return freq;
5856 }
5857
5858
5859 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5860                                       const struct p2p_channels *channels,
5861                                       int freq)
5862 {
5863         if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5864             p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5865             freq_included(wpa_s, channels, freq))
5866                 return 1;
5867         return 0;
5868 }
5869
5870
5871 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5872                                             struct p2p_go_neg_results *params,
5873                                             const struct p2p_channels *channels)
5874 {
5875         unsigned int i, r;
5876
5877         /* try all channels in operating class 115 */
5878         for (i = 0; i < 4; i++) {
5879                 params->freq = 5180 + i * 20;
5880                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5881                     freq_included(wpa_s, channels, params->freq) &&
5882                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5883                         goto out;
5884         }
5885
5886         /* try all channels in operating class 124 */
5887         for (i = 0; i < 4; i++) {
5888                 params->freq = 5745 + i * 20;
5889                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5890                     freq_included(wpa_s, channels, params->freq) &&
5891                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5892                         goto out;
5893         }
5894
5895         /* try social channel class 180 channel 2 */
5896         params->freq = 58320 + 1 * 2160;
5897         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5898             freq_included(wpa_s, channels, params->freq) &&
5899             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5900                 goto out;
5901
5902         /* try all channels in reg. class 180 */
5903         for (i = 0; i < 4; i++) {
5904                 params->freq = 58320 + i * 2160;
5905                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5906                     freq_included(wpa_s, channels, params->freq) &&
5907                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5908                         goto out;
5909         }
5910
5911         /* try some random selection of the social channels */
5912         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5913                 return;
5914
5915         for (i = 0; i < 3; i++) {
5916                 params->freq = 2412 + ((r + i) % 3) * 25;
5917                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5918                         goto out;
5919         }
5920
5921         /* try all other channels in operating class 81 */
5922         for (i = 0; i < 11; i++) {
5923                 params->freq = 2412 + i * 5;
5924
5925                 /* skip social channels; covered in the previous loop */
5926                 if (params->freq == 2412 ||
5927                     params->freq == 2437 ||
5928                     params->freq == 2462)
5929                         continue;
5930
5931                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5932                         goto out;
5933         }
5934
5935         params->freq = 0;
5936         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5937         return;
5938 out:
5939         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5940                    params->freq);
5941 }
5942
5943
5944 static int wpas_same_band(int freq1, int freq2)
5945 {
5946         enum hostapd_hw_mode mode1, mode2;
5947         u8 chan1, chan2;
5948
5949         mode1 = ieee80211_freq_to_chan(freq1, &chan1);
5950         mode2 = ieee80211_freq_to_chan(freq2, &chan2);
5951         if (mode1 == NUM_HOSTAPD_MODES)
5952                 return 0;
5953         return mode1 == mode2;
5954 }
5955
5956
5957 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5958                                    struct p2p_go_neg_results *params,
5959                                    int freq, int vht_center_freq2, int ht40,
5960                                    int vht, int max_oper_chwidth, int he,
5961                                    const struct p2p_channels *channels)
5962 {
5963         struct wpa_used_freq_data *freqs;
5964         unsigned int cand;
5965         unsigned int num, i;
5966         int ignore_no_freqs = 0;
5967         int unused_channels = wpas_p2p_num_unused_channels(wpa_s) > 0;
5968
5969         os_memset(params, 0, sizeof(*params));
5970         params->role_go = 1;
5971         params->ht40 = ht40;
5972         params->vht = vht;
5973         params->he = he;
5974         params->max_oper_chwidth = max_oper_chwidth;
5975         params->vht_center_freq2 = vht_center_freq2;
5976
5977         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5978                           sizeof(struct wpa_used_freq_data));
5979         if (!freqs)
5980                 return -1;
5981
5982         num = get_shared_radio_freqs_data(wpa_s, freqs,
5983                                           wpa_s->num_multichan_concurrent);
5984
5985         if (wpa_s->current_ssid &&
5986             wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5987             wpa_s->wpa_state == WPA_COMPLETED) {
5988                 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5989                            __func__);
5990
5991                 /*
5992                  * If the frequency selection is done for an active P2P GO that
5993                  * is not sharing a frequency, allow to select a new frequency
5994                  * even if there are no unused frequencies as we are about to
5995                  * move the P2P GO so its frequency can be re-used.
5996                  */
5997                 for (i = 0; i < num; i++) {
5998                         if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5999                             freqs[i].flags == 0) {
6000                                 ignore_no_freqs = 1;
6001                                 break;
6002                         }
6003                 }
6004         }
6005
6006         /* try using the forced freq */
6007         if (freq) {
6008                 if (wpas_p2p_disallowed_freq(wpa_s->global, freq) ||
6009                     !freq_included(wpa_s, channels, freq)) {
6010                         wpa_printf(MSG_DEBUG,
6011                                    "P2P: Forced GO freq %d MHz disallowed",
6012                                    freq);
6013                         goto fail;
6014                 }
6015                 if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
6016                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
6017                             ieee80211_is_dfs(freq, wpa_s->hw.modes,
6018                                              wpa_s->hw.num_modes)) {
6019                                 /*
6020                                  * If freq is a DFS channel and DFS is offloaded
6021                                  * to the driver, allow P2P GO to use it.
6022                                  */
6023                                 wpa_printf(MSG_DEBUG,
6024                                            "P2P: %s: The forced channel for GO (%u MHz) requires DFS and DFS is offloaded",
6025                                            __func__, freq);
6026                         } else {
6027                                 wpa_printf(MSG_DEBUG,
6028                                            "P2P: The forced channel for GO (%u MHz) is not supported for P2P uses",
6029                                            freq);
6030                                 goto fail;
6031                         }
6032                 }
6033
6034                 for (i = 0; i < num; i++) {
6035                         if (freqs[i].freq == freq) {
6036                                 wpa_printf(MSG_DEBUG,
6037                                            "P2P: forced freq (%d MHz) is also shared",
6038                                            freq);
6039                                 params->freq = freq;
6040                                 goto success;
6041                         }
6042                 }
6043
6044                 if (!ignore_no_freqs && !unused_channels) {
6045                         wpa_printf(MSG_DEBUG,
6046                                    "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
6047                                    freq);
6048                         goto fail;
6049                 }
6050
6051                 wpa_printf(MSG_DEBUG,
6052                            "P2P: force GO freq (%d MHz) on a free channel",
6053                            freq);
6054                 params->freq = freq;
6055                 goto success;
6056         }
6057
6058         /* consider using one of the shared frequencies */
6059         if (num &&
6060             (!wpa_s->conf->p2p_ignore_shared_freq || !unused_channels)) {
6061                 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
6062                 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6063                         wpa_printf(MSG_DEBUG,
6064                                    "P2P: Use shared freq (%d MHz) for GO",
6065                                    cand);
6066                         params->freq = cand;
6067                         goto success;
6068                 }
6069
6070                 /* try using one of the shared freqs */
6071                 for (i = 0; i < num; i++) {
6072                         if (wpas_p2p_supported_freq_go(wpa_s, channels,
6073                                                        freqs[i].freq)) {
6074                                 wpa_printf(MSG_DEBUG,
6075                                            "P2P: Use shared freq (%d MHz) for GO",
6076                                            freqs[i].freq);
6077                                 params->freq = freqs[i].freq;
6078                                 goto success;
6079                         }
6080                 }
6081         }
6082
6083         if (!ignore_no_freqs && !unused_channels) {
6084                 wpa_printf(MSG_DEBUG,
6085                            "P2P: Cannot force GO on any of the channels we are already using");
6086                 goto fail;
6087         }
6088
6089         /* try using the setting from the configuration file */
6090         if (wpa_s->conf->p2p_oper_reg_class == 81 &&
6091             wpa_s->conf->p2p_oper_channel >= 1 &&
6092             wpa_s->conf->p2p_oper_channel <= 11 &&
6093             wpas_p2p_supported_freq_go(
6094                     wpa_s, channels,
6095                     2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
6096                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
6097                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
6098                            "frequency %d MHz", params->freq);
6099                 goto success;
6100         }
6101
6102         if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
6103              wpa_s->conf->p2p_oper_reg_class == 116 ||
6104              wpa_s->conf->p2p_oper_reg_class == 117 ||
6105              wpa_s->conf->p2p_oper_reg_class == 124 ||
6106              wpa_s->conf->p2p_oper_reg_class == 125 ||
6107              wpa_s->conf->p2p_oper_reg_class == 126 ||
6108              wpa_s->conf->p2p_oper_reg_class == 127) &&
6109             wpas_p2p_supported_freq_go(wpa_s, channels,
6110                                        5000 +
6111                                        5 * wpa_s->conf->p2p_oper_channel)) {
6112                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
6113                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
6114                            "frequency %d MHz", params->freq);
6115                 goto success;
6116         }
6117
6118         /* Try using best channels */
6119         if (wpa_s->conf->p2p_oper_channel == 0 &&
6120             wpa_s->best_overall_freq > 0 &&
6121             wpas_p2p_supported_freq_go(wpa_s, channels,
6122                                        wpa_s->best_overall_freq)) {
6123                 params->freq = wpa_s->best_overall_freq;
6124                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
6125                            "channel %d MHz", params->freq);
6126                 goto success;
6127         }
6128
6129         if (wpa_s->conf->p2p_oper_channel == 0 &&
6130             wpa_s->best_24_freq > 0 &&
6131             wpas_p2p_supported_freq_go(wpa_s, channels,
6132                                        wpa_s->best_24_freq)) {
6133                 params->freq = wpa_s->best_24_freq;
6134                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
6135                            "channel %d MHz", params->freq);
6136                 goto success;
6137         }
6138
6139         if (wpa_s->conf->p2p_oper_channel == 0 &&
6140             wpa_s->best_5_freq > 0 &&
6141             wpas_p2p_supported_freq_go(wpa_s, channels,
6142                                        wpa_s->best_5_freq)) {
6143                 params->freq = wpa_s->best_5_freq;
6144                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
6145                            "channel %d MHz", params->freq);
6146                 goto success;
6147         }
6148
6149         /* try using preferred channels */
6150         cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
6151         if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6152                 params->freq = cand;
6153                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
6154                            "channels", params->freq);
6155                 goto success;
6156         }
6157
6158         /* Try using a channel that allows VHT to be used with 80 MHz */
6159         if (wpa_s->hw.modes && wpa_s->p2p_group_common_freqs) {
6160                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
6161                         enum hostapd_hw_mode mode;
6162                         struct hostapd_hw_modes *hwmode;
6163                         u8 chan;
6164
6165                         cand = wpa_s->p2p_group_common_freqs[i];
6166                         mode = ieee80211_freq_to_chan(cand, &chan);
6167                         hwmode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
6168                                           mode);
6169                         if (!hwmode ||
6170                             wpas_p2p_verify_channel(wpa_s, hwmode, chan,
6171                                                     BW80) != ALLOWED)
6172                                 continue;
6173                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6174                                 params->freq = cand;
6175                                 wpa_printf(MSG_DEBUG,
6176                                            "P2P: Use freq %d MHz common with the peer and allowing VHT80",
6177                                            params->freq);
6178                                 goto success;
6179                         }
6180                 }
6181         }
6182
6183         /* Try using a channel that allows HT to be used with 40 MHz on the same
6184          * band so that CSA can be used */
6185         if (wpa_s->current_ssid && wpa_s->hw.modes &&
6186             wpa_s->p2p_group_common_freqs) {
6187                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
6188                         enum hostapd_hw_mode mode;
6189                         struct hostapd_hw_modes *hwmode;
6190                         u8 chan;
6191
6192                         cand = wpa_s->p2p_group_common_freqs[i];
6193                         mode = ieee80211_freq_to_chan(cand, &chan);
6194                         hwmode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
6195                                           mode);
6196                         if (!wpas_same_band(wpa_s->current_ssid->frequency,
6197                                             cand) ||
6198                             !hwmode ||
6199                             (wpas_p2p_verify_channel(wpa_s, hwmode, chan,
6200                                                      BW40MINUS) != ALLOWED &&
6201                              wpas_p2p_verify_channel(wpa_s, hwmode, chan,
6202                                                      BW40PLUS) != ALLOWED))
6203                                 continue;
6204                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6205                                 params->freq = cand;
6206                                 wpa_printf(MSG_DEBUG,
6207                                            "P2P: Use freq %d MHz common with the peer, allowing HT40, and maintaining same band",
6208                                            params->freq);
6209                                 goto success;
6210                         }
6211                 }
6212         }
6213
6214         /* Try using one of the group common freqs on the same band so that CSA
6215          * can be used */
6216         if (wpa_s->current_ssid && wpa_s->p2p_group_common_freqs) {
6217                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
6218                         cand = wpa_s->p2p_group_common_freqs[i];
6219                         if (!wpas_same_band(wpa_s->current_ssid->frequency,
6220                                             cand))
6221                                 continue;
6222                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6223                                 params->freq = cand;
6224                                 wpa_printf(MSG_DEBUG,
6225                                            "P2P: Use freq %d MHz common with the peer and maintaining same band",
6226                                            params->freq);
6227                                 goto success;
6228                         }
6229                 }
6230         }
6231
6232         /* Try using one of the group common freqs */
6233         if (wpa_s->p2p_group_common_freqs) {
6234                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
6235                         cand = wpa_s->p2p_group_common_freqs[i];
6236                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
6237                                 params->freq = cand;
6238                                 wpa_printf(MSG_DEBUG,
6239                                            "P2P: Use freq %d MHz common with the peer",
6240                                            params->freq);
6241                                 goto success;
6242                         }
6243                 }
6244         }
6245
6246         /* no preference, select some channel */
6247         wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
6248
6249         if (params->freq == 0) {
6250                 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
6251                 goto fail;
6252         }
6253
6254 success:
6255         os_free(freqs);
6256         return 0;
6257 fail:
6258         os_free(freqs);
6259         return -1;
6260 }
6261
6262
6263 static struct wpa_supplicant *
6264 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
6265                          int go)
6266 {
6267         struct wpa_supplicant *group_wpa_s;
6268
6269         if (!wpas_p2p_create_iface(wpa_s)) {
6270                 if (wpa_s->p2p_mgmt) {
6271                         /*
6272                          * We may be called on the p2p_dev interface which
6273                          * cannot be used for group operations, so always use
6274                          * the primary interface.
6275                          */
6276                         wpa_s->parent->p2pdev = wpa_s;
6277                         wpa_s = wpa_s->parent;
6278                 }
6279                 wpa_dbg(wpa_s, MSG_DEBUG,
6280                         "P2P: Use primary interface for group operations");
6281                 wpa_s->p2p_first_connection_timeout = 0;
6282                 if (wpa_s != wpa_s->p2pdev)
6283                         wpas_p2p_clone_config(wpa_s, wpa_s->p2pdev);
6284                 return wpa_s;
6285         }
6286
6287         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
6288                                          WPA_IF_P2P_CLIENT) < 0) {
6289                 wpa_msg_global(wpa_s, MSG_ERROR,
6290                                "P2P: Failed to add group interface");
6291                 return NULL;
6292         }
6293         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
6294         if (group_wpa_s == NULL) {
6295                 wpa_msg_global(wpa_s, MSG_ERROR,
6296                                "P2P: Failed to initialize group interface");
6297                 wpas_p2p_remove_pending_group_interface(wpa_s);
6298                 return NULL;
6299         }
6300
6301         if (go && wpa_s->p2p_go_do_acs) {
6302                 group_wpa_s->p2p_go_do_acs = wpa_s->p2p_go_do_acs;
6303                 group_wpa_s->p2p_go_acs_band = wpa_s->p2p_go_acs_band;
6304                 wpa_s->p2p_go_do_acs = 0;
6305         }
6306
6307         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
6308                 group_wpa_s->ifname);
6309         group_wpa_s->p2p_first_connection_timeout = 0;
6310         return group_wpa_s;
6311 }
6312
6313
6314 /**
6315  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
6316  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
6317  * @persistent_group: Whether to create a persistent group
6318  * @freq: Frequency for the group or 0 to indicate no hardcoding
6319  * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80
6320  * @ht40: Start GO with 40 MHz channel width
6321  * @vht:  Start GO with VHT support
6322  * @vht_chwidth: channel bandwidth for GO operating with VHT support
6323  * Returns: 0 on success, -1 on failure
6324  *
6325  * This function creates a new P2P group with the local end as the Group Owner,
6326  * i.e., without using Group Owner Negotiation.
6327  */
6328 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
6329                        int freq, int vht_center_freq2, int ht40, int vht,
6330                        int max_oper_chwidth, int he)
6331 {
6332         struct p2p_go_neg_results params;
6333
6334         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6335                 return -1;
6336
6337         os_free(wpa_s->global->add_psk);
6338         wpa_s->global->add_psk = NULL;
6339
6340         /* Make sure we are not running find during connection establishment */
6341         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6342         wpas_p2p_stop_find_oper(wpa_s);
6343
6344         if (!wpa_s->p2p_go_do_acs) {
6345                 freq = wpas_p2p_select_go_freq(wpa_s, freq);
6346                 if (freq < 0)
6347                         return -1;
6348         }
6349
6350         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6351                                     ht40, vht, max_oper_chwidth, he, NULL))
6352                 return -1;
6353
6354         p2p_go_params(wpa_s->global->p2p, &params);
6355         params.persistent_group = persistent_group;
6356
6357         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6358         if (wpa_s == NULL)
6359                 return -1;
6360         wpas_start_wps_go(wpa_s, &params, 0);
6361
6362         return 0;
6363 }
6364
6365
6366 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6367                                  struct wpa_ssid *params, int addr_allocated,
6368                                  int freq, int force_scan)
6369 {
6370         struct wpa_ssid *ssid;
6371
6372         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6373         if (wpa_s == NULL)
6374                 return -1;
6375         if (force_scan)
6376                 os_get_reltime(&wpa_s->scan_min_time);
6377         wpa_s->p2p_last_4way_hs_fail = NULL;
6378
6379         wpa_supplicant_ap_deinit(wpa_s);
6380
6381         ssid = wpa_config_add_network(wpa_s->conf);
6382         if (ssid == NULL)
6383                 return -1;
6384         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
6385         wpa_config_set_network_defaults(ssid);
6386         ssid->temporary = 1;
6387         ssid->proto = WPA_PROTO_RSN;
6388         ssid->pbss = params->pbss;
6389         ssid->pairwise_cipher = params->pbss ? WPA_CIPHER_GCMP :
6390                 WPA_CIPHER_CCMP;
6391         ssid->group_cipher = params->pbss ? WPA_CIPHER_GCMP : WPA_CIPHER_CCMP;
6392         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6393         ssid->ssid = os_malloc(params->ssid_len);
6394         if (ssid->ssid == NULL) {
6395                 wpa_config_remove_network(wpa_s->conf, ssid->id);
6396                 return -1;
6397         }
6398         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6399         ssid->ssid_len = params->ssid_len;
6400         ssid->p2p_group = 1;
6401         ssid->export_keys = 1;
6402         if (params->psk_set) {
6403                 os_memcpy(ssid->psk, params->psk, 32);
6404                 ssid->psk_set = 1;
6405         }
6406         if (params->passphrase)
6407                 ssid->passphrase = os_strdup(params->passphrase);
6408
6409         wpa_s->show_group_started = 1;
6410         wpa_s->p2p_in_invitation = 1;
6411         wpa_s->p2p_invite_go_freq = freq;
6412         wpa_s->p2p_go_group_formation_completed = 0;
6413         wpa_s->global->p2p_group_formation = wpa_s;
6414
6415         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6416                              NULL);
6417         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6418                                wpas_p2p_group_formation_timeout,
6419                                wpa_s->p2pdev, NULL);
6420         wpa_supplicant_select_network(wpa_s, ssid);
6421
6422         return 0;
6423 }
6424
6425
6426 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6427                                   struct wpa_ssid *ssid, int addr_allocated,
6428                                   int force_freq, int neg_freq,
6429                                   int vht_center_freq2, int ht40,
6430                                   int vht, int max_oper_chwidth, int he,
6431                                   const struct p2p_channels *channels,
6432                                   int connection_timeout, int force_scan)
6433 {
6434         struct p2p_go_neg_results params;
6435         int go = 0, freq;
6436
6437         if (ssid->disabled != 2 || ssid->ssid == NULL)
6438                 return -1;
6439
6440         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6441             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6442                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6443                            "already running");
6444                 if (go == 0 &&
6445                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6446                                          wpa_s->p2pdev, NULL)) {
6447                         /*
6448                          * This can happen if Invitation Response frame was lost
6449                          * and the peer (GO of a persistent group) tries to
6450                          * invite us again. Reschedule the timeout to avoid
6451                          * terminating the wait for the connection too early
6452                          * since we now know that the peer is still trying to
6453                          * invite us instead of having already started the GO.
6454                          */
6455                         wpa_printf(MSG_DEBUG,
6456                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6457                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6458                                                wpas_p2p_group_formation_timeout,
6459                                                wpa_s->p2pdev, NULL);
6460                 }
6461                 return 0;
6462         }
6463
6464         os_free(wpa_s->global->add_psk);
6465         wpa_s->global->add_psk = NULL;
6466
6467         /* Make sure we are not running find during connection establishment */
6468         wpas_p2p_stop_find_oper(wpa_s);
6469
6470         wpa_s->p2p_fallback_to_go_neg = 0;
6471
6472         if (ssid->mode == WPAS_MODE_P2P_GO) {
6473                 if (force_freq > 0) {
6474                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6475                         if (freq < 0)
6476                                 return -1;
6477                 } else {
6478                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6479                         if (freq < 0 ||
6480                             (freq > 0 && !freq_included(wpa_s, channels, freq)))
6481                                 freq = 0;
6482                 }
6483         } else if (ssid->mode == WPAS_MODE_INFRA) {
6484                 freq = neg_freq;
6485                 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6486                         struct os_reltime now;
6487                         struct wpa_bss *bss =
6488                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6489
6490                         os_get_reltime(&now);
6491                         if (bss &&
6492                             !os_reltime_expired(&now, &bss->last_update, 5) &&
6493                             freq_included(wpa_s, channels, bss->freq))
6494                                 freq = bss->freq;
6495                         else
6496                                 freq = 0;
6497                 }
6498
6499                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6500                                              force_scan);
6501         } else {
6502                 return -1;
6503         }
6504
6505         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6506                                     ht40, vht, max_oper_chwidth, he, channels))
6507                 return -1;
6508
6509         params.role_go = 1;
6510         params.psk_set = ssid->psk_set;
6511         if (params.psk_set)
6512                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6513         if (ssid->passphrase) {
6514                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6515                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6516                                    "persistent group");
6517                         return -1;
6518                 }
6519                 os_strlcpy(params.passphrase, ssid->passphrase,
6520                            sizeof(params.passphrase));
6521         }
6522         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6523         params.ssid_len = ssid->ssid_len;
6524         params.persistent_group = 1;
6525
6526         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6527         if (wpa_s == NULL)
6528                 return -1;
6529
6530         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6531
6532         wpa_s->p2p_first_connection_timeout = connection_timeout;
6533         wpas_start_wps_go(wpa_s, &params, 0);
6534
6535         return 0;
6536 }
6537
6538
6539 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6540                                struct wpabuf *proberesp_ies)
6541 {
6542         struct wpa_supplicant *wpa_s = ctx;
6543         if (wpa_s->ap_iface) {
6544                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6545                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6546                         wpabuf_free(beacon_ies);
6547                         wpabuf_free(proberesp_ies);
6548                         return;
6549                 }
6550                 if (beacon_ies) {
6551                         wpabuf_free(hapd->p2p_beacon_ie);
6552                         hapd->p2p_beacon_ie = beacon_ies;
6553                 }
6554                 wpabuf_free(hapd->p2p_probe_resp_ie);
6555                 hapd->p2p_probe_resp_ie = proberesp_ies;
6556         } else {
6557                 wpabuf_free(beacon_ies);
6558                 wpabuf_free(proberesp_ies);
6559         }
6560         wpa_supplicant_ap_update_beacon(wpa_s);
6561 }
6562
6563
6564 static void wpas_p2p_idle_update(void *ctx, int idle)
6565 {
6566         struct wpa_supplicant *wpa_s = ctx;
6567         if (!wpa_s->ap_iface)
6568                 return;
6569         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6570         if (idle) {
6571                 if (wpa_s->global->p2p_fail_on_wps_complete &&
6572                     wpa_s->p2p_in_provisioning) {
6573                         wpas_p2p_grpform_fail_after_wps(wpa_s);
6574                         return;
6575                 }
6576                 wpas_p2p_set_group_idle_timeout(wpa_s);
6577         } else
6578                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6579 }
6580
6581
6582 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6583                                        struct wpa_ssid *ssid)
6584 {
6585         struct p2p_group *group;
6586         struct p2p_group_config *cfg;
6587
6588         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6589             !ssid->p2p_group)
6590                 return NULL;
6591
6592         cfg = os_zalloc(sizeof(*cfg));
6593         if (cfg == NULL)
6594                 return NULL;
6595
6596         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6597                 cfg->persistent_group = 2;
6598         else if (ssid->p2p_persistent_group)
6599                 cfg->persistent_group = 1;
6600         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6601         if (wpa_s->max_stations &&
6602             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6603                 cfg->max_clients = wpa_s->max_stations;
6604         else
6605                 cfg->max_clients = wpa_s->conf->max_num_sta;
6606         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6607         cfg->ssid_len = ssid->ssid_len;
6608         cfg->freq = ssid->frequency;
6609         cfg->cb_ctx = wpa_s;
6610         cfg->ie_update = wpas_p2p_ie_update;
6611         cfg->idle_update = wpas_p2p_idle_update;
6612         cfg->ip_addr_alloc = WPA_GET_BE32(wpa_s->p2pdev->conf->ip_addr_start)
6613                 != 0;
6614
6615         group = p2p_group_init(wpa_s->global->p2p, cfg);
6616         if (group == NULL)
6617                 os_free(cfg);
6618         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6619                 p2p_group_notif_formation_done(group);
6620         wpa_s->p2p_group = group;
6621         return group;
6622 }
6623
6624
6625 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6626                           int registrar)
6627 {
6628         struct wpa_ssid *ssid = wpa_s->current_ssid;
6629
6630         if (!wpa_s->p2p_in_provisioning) {
6631                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6632                            "provisioning not in progress");
6633                 return;
6634         }
6635
6636         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6637                 u8 go_dev_addr[ETH_ALEN];
6638                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6639                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6640                                           ssid->ssid_len);
6641                 /* Clear any stored provisioning info */
6642                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6643         }
6644
6645         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6646                              NULL);
6647         wpa_s->p2p_go_group_formation_completed = 1;
6648         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6649                 /*
6650                  * Use a separate timeout for initial data connection to
6651                  * complete to allow the group to be removed automatically if
6652                  * something goes wrong in this step before the P2P group idle
6653                  * timeout mechanism is taken into use.
6654                  */
6655                 wpa_dbg(wpa_s, MSG_DEBUG,
6656                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6657                         P2P_MAX_INITIAL_CONN_WAIT);
6658                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6659                                        wpas_p2p_group_formation_timeout,
6660                                        wpa_s->p2pdev, NULL);
6661                 /* Complete group formation on successful data connection. */
6662                 wpa_s->p2p_go_group_formation_completed = 0;
6663         } else if (ssid) {
6664                 /*
6665                  * Use a separate timeout for initial data connection to
6666                  * complete to allow the group to be removed automatically if
6667                  * the client does not complete data connection successfully.
6668                  */
6669                 wpa_dbg(wpa_s, MSG_DEBUG,
6670                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6671                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6672                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6673                                        wpas_p2p_group_formation_timeout,
6674                                        wpa_s->p2pdev, NULL);
6675                 /*
6676                  * Complete group formation on first successful data connection
6677                  */
6678                 wpa_s->p2p_go_group_formation_completed = 0;
6679         }
6680         if (wpa_s->global->p2p)
6681                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6682         wpas_group_formation_completed(wpa_s, 1, 0);
6683 }
6684
6685
6686 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6687                          struct wps_event_fail *fail)
6688 {
6689         if (!wpa_s->p2p_in_provisioning) {
6690                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6691                            "provisioning not in progress");
6692                 return;
6693         }
6694
6695         if (wpa_s->go_params) {
6696                 p2p_clear_provisioning_info(
6697                         wpa_s->global->p2p,
6698                         wpa_s->go_params->peer_device_addr);
6699         }
6700
6701         wpas_notify_p2p_wps_failed(wpa_s, fail);
6702
6703         if (wpa_s == wpa_s->global->p2p_group_formation) {
6704                 /*
6705                  * Allow some time for the failed WPS negotiation exchange to
6706                  * complete, but remove the group since group formation cannot
6707                  * succeed after provisioning failure.
6708                  */
6709                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6710                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6711                 eloop_deplete_timeout(0, 50000,
6712                                       wpas_p2p_group_formation_timeout,
6713                                       wpa_s->p2pdev, NULL);
6714         }
6715 }
6716
6717
6718 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6719 {
6720         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6721             !wpa_s->p2p_in_provisioning)
6722                 return 0;
6723
6724         wpas_p2p_grpform_fail_after_wps(wpa_s);
6725
6726         return 1;
6727 }
6728
6729
6730 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6731                        const char *config_method,
6732                        enum wpas_p2p_prov_disc_use use,
6733                        struct p2ps_provision *p2ps_prov)
6734 {
6735         u16 config_methods;
6736
6737         wpa_s->global->pending_p2ps_group = 0;
6738         wpa_s->global->pending_p2ps_group_freq = 0;
6739         wpa_s->p2p_fallback_to_go_neg = 0;
6740         wpa_s->pending_pd_use = NORMAL_PD;
6741         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6742                 p2ps_prov->conncap = p2ps_group_capability(
6743                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6744                         &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6745
6746                 wpa_printf(MSG_DEBUG,
6747                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6748                            __func__, p2ps_prov->conncap,
6749                            p2ps_prov->adv_id, p2ps_prov->conncap,
6750                            p2ps_prov->status, p2ps_prov->info);
6751
6752                 config_methods = 0;
6753         } else if (os_strncmp(config_method, "display", 7) == 0)
6754                 config_methods = WPS_CONFIG_DISPLAY;
6755         else if (os_strncmp(config_method, "keypad", 6) == 0)
6756                 config_methods = WPS_CONFIG_KEYPAD;
6757         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6758                  os_strncmp(config_method, "pushbutton", 10) == 0)
6759                 config_methods = WPS_CONFIG_PUSHBUTTON;
6760         else {
6761                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6762                 os_free(p2ps_prov);
6763                 return -1;
6764         }
6765
6766         if (use == WPAS_P2P_PD_AUTO) {
6767                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6768                 wpa_s->pending_pd_config_methods = config_methods;
6769                 wpa_s->p2p_auto_pd = 1;
6770                 wpa_s->p2p_auto_join = 0;
6771                 wpa_s->pending_pd_before_join = 0;
6772                 wpa_s->auto_pd_scan_retry = 0;
6773                 wpas_p2p_stop_find(wpa_s);
6774                 wpa_s->p2p_join_scan_count = 0;
6775                 os_get_reltime(&wpa_s->p2p_auto_started);
6776                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6777                            wpa_s->p2p_auto_started.sec,
6778                            wpa_s->p2p_auto_started.usec);
6779                 wpas_p2p_join_scan(wpa_s, NULL);
6780                 return 0;
6781         }
6782
6783         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6784                 os_free(p2ps_prov);
6785                 return -1;
6786         }
6787
6788         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6789                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6790                                  0, 1);
6791 }
6792
6793
6794 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6795                               char *end)
6796 {
6797         return p2p_scan_result_text(ies, ies_len, buf, end);
6798 }
6799
6800
6801 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6802 {
6803         if (!offchannel_pending_action_tx(wpa_s))
6804                 return;
6805
6806         if (wpa_s->p2p_send_action_work) {
6807                 wpas_p2p_free_send_action_work(wpa_s);
6808                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
6809                                      wpa_s, NULL);
6810                 offchannel_send_action_done(wpa_s);
6811         }
6812
6813         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6814                    "operation request");
6815         offchannel_clear_pending_action_tx(wpa_s);
6816 }
6817
6818
6819 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6820                   enum p2p_discovery_type type,
6821                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6822                   const u8 *dev_id, unsigned int search_delay,
6823                   u8 seek_cnt, const char **seek_string, int freq)
6824 {
6825         wpas_p2p_clear_pending_action_tx(wpa_s);
6826         wpa_s->p2p_long_listen = 0;
6827
6828         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6829             wpa_s->p2p_in_provisioning) {
6830                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Reject p2p_find operation%s%s",
6831                         (wpa_s->global->p2p_disabled || !wpa_s->global->p2p) ?
6832                         " (P2P disabled)" : "",
6833                         wpa_s->p2p_in_provisioning ?
6834                         " (p2p_in_provisioning)" : "");
6835                 return -1;
6836         }
6837
6838         wpa_supplicant_cancel_sched_scan(wpa_s);
6839
6840         return p2p_find(wpa_s->global->p2p, timeout, type,
6841                         num_req_dev_types, req_dev_types, dev_id,
6842                         search_delay, seek_cnt, seek_string, freq);
6843 }
6844
6845
6846 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6847                                             struct wpa_scan_results *scan_res)
6848 {
6849         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6850
6851         if (wpa_s->p2p_scan_work) {
6852                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6853                 wpa_s->p2p_scan_work = NULL;
6854                 radio_work_done(work);
6855         }
6856
6857         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6858                 return;
6859
6860         /*
6861          * Indicate that results have been processed so that the P2P module can
6862          * continue pending tasks.
6863          */
6864         p2p_scan_res_handled(wpa_s->global->p2p);
6865 }
6866
6867
6868 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6869 {
6870         wpas_p2p_clear_pending_action_tx(wpa_s);
6871         wpa_s->p2p_long_listen = 0;
6872         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6873         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6874
6875         if (wpa_s->global->p2p)
6876                 p2p_stop_find(wpa_s->global->p2p);
6877
6878         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6879                 wpa_printf(MSG_DEBUG,
6880                            "P2P: Do not consider the scan results after stop_find");
6881                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6882         }
6883 }
6884
6885
6886 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6887 {
6888         wpas_p2p_stop_find_oper(wpa_s);
6889         if (!wpa_s->global->pending_group_iface_for_p2ps)
6890                 wpas_p2p_remove_pending_group_interface(wpa_s);
6891 }
6892
6893
6894 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6895 {
6896         struct wpa_supplicant *wpa_s = eloop_ctx;
6897         wpa_s->p2p_long_listen = 0;
6898 }
6899
6900
6901 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6902 {
6903         int res;
6904
6905         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6906                 return -1;
6907
6908         if (wpa_s->p2p_lo_started) {
6909                 wpa_printf(MSG_DEBUG,
6910                         "P2P: Cannot start P2P listen, it is offloaded");
6911                 return -1;
6912         }
6913
6914         wpa_supplicant_cancel_sched_scan(wpa_s);
6915         wpas_p2p_clear_pending_action_tx(wpa_s);
6916
6917         if (timeout == 0) {
6918                 /*
6919                  * This is a request for unlimited Listen state. However, at
6920                  * least for now, this is mapped to a Listen state for one
6921                  * hour.
6922                  */
6923                 timeout = 3600;
6924         }
6925         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6926         wpa_s->p2p_long_listen = 0;
6927
6928         /*
6929          * Stop previous find/listen operation to avoid trying to request a new
6930          * remain-on-channel operation while the driver is still running the
6931          * previous one.
6932          */
6933         if (wpa_s->global->p2p)
6934                 p2p_stop_find(wpa_s->global->p2p);
6935
6936         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6937         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6938                 wpa_s->p2p_long_listen = timeout * 1000;
6939                 eloop_register_timeout(timeout, 0,
6940                                        wpas_p2p_long_listen_timeout,
6941                                        wpa_s, NULL);
6942         }
6943
6944         return res;
6945 }
6946
6947
6948 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6949                           u8 *buf, size_t len, int p2p_group)
6950 {
6951         struct wpabuf *p2p_ie;
6952         int ret;
6953
6954         if (wpa_s->global->p2p_disabled)
6955                 return -1;
6956         /*
6957          * Advertize mandatory cross connection capability even on
6958          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6959          */
6960         if (wpa_s->conf->p2p_disabled && p2p_group)
6961                 return -1;
6962         if (wpa_s->global->p2p == NULL)
6963                 return -1;
6964         if (bss == NULL)
6965                 return -1;
6966
6967         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6968         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6969                                p2p_group, p2p_ie);
6970         wpabuf_free(p2p_ie);
6971
6972         return ret;
6973 }
6974
6975
6976 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6977                           const u8 *dst, const u8 *bssid,
6978                           const u8 *ie, size_t ie_len,
6979                           unsigned int rx_freq, int ssi_signal)
6980 {
6981         if (wpa_s->global->p2p_disabled)
6982                 return 0;
6983         if (wpa_s->global->p2p == NULL)
6984                 return 0;
6985
6986         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6987                                  ie, ie_len, rx_freq, wpa_s->p2p_lo_started)) {
6988         case P2P_PREQ_NOT_P2P:
6989                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6990                                  ssi_signal);
6991                 /* fall through */
6992         case P2P_PREQ_MALFORMED:
6993         case P2P_PREQ_NOT_LISTEN:
6994         case P2P_PREQ_NOT_PROCESSED:
6995         default: /* make gcc happy */
6996                 return 0;
6997         case P2P_PREQ_PROCESSED:
6998                 return 1;
6999         }
7000 }
7001
7002
7003 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
7004                         const u8 *sa, const u8 *bssid,
7005                         u8 category, const u8 *data, size_t len, int freq)
7006 {
7007         if (wpa_s->global->p2p_disabled)
7008                 return;
7009         if (wpa_s->global->p2p == NULL)
7010                 return;
7011
7012         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
7013                       freq);
7014 }
7015
7016
7017 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
7018 {
7019         unsigned int bands;
7020
7021         if (wpa_s->global->p2p_disabled)
7022                 return;
7023         if (wpa_s->global->p2p == NULL)
7024                 return;
7025
7026         bands = wpas_get_bands(wpa_s, NULL);
7027         p2p_scan_ie(wpa_s->global->p2p, ies, NULL, bands);
7028 }
7029
7030
7031 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
7032 {
7033         p2p_group_deinit(wpa_s->p2p_group);
7034         wpa_s->p2p_group = NULL;
7035
7036         wpa_s->ap_configured_cb = NULL;
7037         wpa_s->ap_configured_cb_ctx = NULL;
7038         wpa_s->ap_configured_cb_data = NULL;
7039         wpa_s->connect_without_scan = NULL;
7040 }
7041
7042
7043 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
7044 {
7045         wpa_s->p2p_long_listen = 0;
7046
7047         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7048                 return -1;
7049
7050         return p2p_reject(wpa_s->global->p2p, addr);
7051 }
7052
7053
7054 /* Invite to reinvoke a persistent group */
7055 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
7056                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
7057                     int vht_center_freq2, int ht40, int vht, int max_chwidth,
7058                     int pref_freq, int he)
7059 {
7060         enum p2p_invite_role role;
7061         u8 *bssid = NULL;
7062         int force_freq = 0;
7063         int res;
7064         int no_pref_freq_given = pref_freq == 0;
7065         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
7066
7067         wpa_s->global->p2p_invite_group = NULL;
7068         if (peer_addr)
7069                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
7070         else
7071                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
7072
7073         wpa_s->p2p_persistent_go_freq = freq;
7074         wpa_s->p2p_go_ht40 = !!ht40;
7075         wpa_s->p2p_go_vht = !!vht;
7076         wpa_s->p2p_go_he = !!he;
7077         wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
7078         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
7079         if (ssid->mode == WPAS_MODE_P2P_GO) {
7080                 role = P2P_INVITE_ROLE_GO;
7081                 if (peer_addr == NULL) {
7082                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
7083                                    "address in invitation command");
7084                         return -1;
7085                 }
7086                 if (wpas_p2p_create_iface(wpa_s)) {
7087                         if (wpas_p2p_add_group_interface(wpa_s,
7088                                                          WPA_IF_P2P_GO) < 0) {
7089                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
7090                                            "allocate a new interface for the "
7091                                            "group");
7092                                 return -1;
7093                         }
7094                         bssid = wpa_s->pending_interface_addr;
7095                 } else if (wpa_s->p2p_mgmt)
7096                         bssid = wpa_s->parent->own_addr;
7097                 else
7098                         bssid = wpa_s->own_addr;
7099         } else {
7100                 role = P2P_INVITE_ROLE_CLIENT;
7101                 peer_addr = ssid->bssid;
7102         }
7103         wpa_s->pending_invite_ssid_id = ssid->id;
7104
7105         size = P2P_MAX_PREF_CHANNELS;
7106         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
7107                                    role == P2P_INVITE_ROLE_GO,
7108                                    pref_freq_list, &size);
7109         if (res)
7110                 return res;
7111
7112         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7113                 return -1;
7114
7115         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
7116
7117         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
7118             no_pref_freq_given && pref_freq > 0 &&
7119             wpa_s->num_multichan_concurrent > 1 &&
7120             wpas_p2p_num_unused_channels(wpa_s) > 0) {
7121                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
7122                            pref_freq);
7123                 pref_freq = 0;
7124         }
7125
7126         /*
7127          * Stop any find/listen operations before invitation and possibly
7128          * connection establishment.
7129          */
7130         wpas_p2p_stop_find_oper(wpa_s);
7131
7132         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
7133                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
7134                           1, pref_freq, -1);
7135 }
7136
7137
7138 /* Invite to join an active group */
7139 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
7140                           const u8 *peer_addr, const u8 *go_dev_addr)
7141 {
7142         struct wpa_global *global = wpa_s->global;
7143         enum p2p_invite_role role;
7144         u8 *bssid = NULL;
7145         struct wpa_ssid *ssid;
7146         int persistent;
7147         int freq = 0, force_freq = 0, pref_freq = 0;
7148         int res;
7149         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
7150
7151         wpa_s->p2p_persistent_go_freq = 0;
7152         wpa_s->p2p_go_ht40 = 0;
7153         wpa_s->p2p_go_vht = 0;
7154         wpa_s->p2p_go_vht_center_freq2 = 0;
7155         wpa_s->p2p_go_max_oper_chwidth = 0;
7156
7157         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7158                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
7159                         break;
7160         }
7161         if (wpa_s == NULL) {
7162                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
7163                 return -1;
7164         }
7165
7166         ssid = wpa_s->current_ssid;
7167         if (ssid == NULL) {
7168                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
7169                            "invitation");
7170                 return -1;
7171         }
7172
7173         wpa_s->global->p2p_invite_group = wpa_s;
7174         persistent = ssid->p2p_persistent_group &&
7175                 wpas_p2p_get_persistent(wpa_s->p2pdev, peer_addr,
7176                                         ssid->ssid, ssid->ssid_len);
7177
7178         if (ssid->mode == WPAS_MODE_P2P_GO) {
7179                 role = P2P_INVITE_ROLE_ACTIVE_GO;
7180                 bssid = wpa_s->own_addr;
7181                 if (go_dev_addr == NULL)
7182                         go_dev_addr = wpa_s->global->p2p_dev_addr;
7183                 freq = ssid->frequency;
7184         } else {
7185                 role = P2P_INVITE_ROLE_CLIENT;
7186                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
7187                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
7188                                    "invite to current group");
7189                         return -1;
7190                 }
7191                 bssid = wpa_s->bssid;
7192                 if (go_dev_addr == NULL &&
7193                     !is_zero_ether_addr(wpa_s->go_dev_addr))
7194                         go_dev_addr = wpa_s->go_dev_addr;
7195                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
7196                         (int) wpa_s->assoc_freq;
7197         }
7198         wpa_s->p2pdev->pending_invite_ssid_id = -1;
7199
7200         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7201                 return -1;
7202
7203         size = P2P_MAX_PREF_CHANNELS;
7204         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
7205                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
7206                                    pref_freq_list, &size);
7207         if (res)
7208                 return res;
7209         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
7210
7211         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
7212                           ssid->ssid, ssid->ssid_len, force_freq,
7213                           go_dev_addr, persistent, pref_freq, -1);
7214 }
7215
7216
7217 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
7218 {
7219         struct wpa_ssid *ssid = wpa_s->current_ssid;
7220         u8 go_dev_addr[ETH_ALEN];
7221         int persistent;
7222         int freq;
7223         u8 ip[3 * 4], *ip_ptr = NULL;
7224         char ip_addr[100];
7225
7226         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
7227                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7228                                      wpa_s->p2pdev, NULL);
7229         }
7230
7231         if (!wpa_s->show_group_started || !ssid)
7232                 return;
7233
7234         wpa_s->show_group_started = 0;
7235         if (!wpa_s->p2p_go_group_formation_completed &&
7236             wpa_s->global->p2p_group_formation == wpa_s) {
7237                 wpa_dbg(wpa_s, MSG_DEBUG,
7238                         "P2P: Marking group formation completed on client on data connection");
7239                 wpa_s->p2p_go_group_formation_completed = 1;
7240                 wpa_s->global->p2p_group_formation = NULL;
7241                 wpa_s->p2p_in_provisioning = 0;
7242                 wpa_s->p2p_in_invitation = 0;
7243         }
7244
7245         os_memset(go_dev_addr, 0, ETH_ALEN);
7246         if (ssid->bssid_set)
7247                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
7248         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
7249                                                ssid->ssid_len);
7250         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
7251
7252         if (wpa_s->global->p2p_group_formation == wpa_s)
7253                 wpa_s->global->p2p_group_formation = NULL;
7254
7255         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
7256                 (int) wpa_s->assoc_freq;
7257
7258         ip_addr[0] = '\0';
7259         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
7260                 int res;
7261
7262                 res = os_snprintf(ip_addr, sizeof(ip_addr),
7263                                   " ip_addr=%u.%u.%u.%u "
7264                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
7265                                   ip[0], ip[1], ip[2], ip[3],
7266                                   ip[4], ip[5], ip[6], ip[7],
7267                                   ip[8], ip[9], ip[10], ip[11]);
7268                 if (os_snprintf_error(sizeof(ip_addr), res))
7269                         ip_addr[0] = '\0';
7270                 ip_ptr = ip;
7271         }
7272
7273         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
7274                                ssid->passphrase == NULL && ssid->psk_set ?
7275                                ssid->psk : NULL,
7276                                ssid->passphrase, go_dev_addr, persistent,
7277                                ip_addr);
7278
7279         if (persistent)
7280                 wpas_p2p_store_persistent_group(wpa_s->p2pdev,
7281                                                 ssid, go_dev_addr);
7282
7283         wpas_notify_p2p_group_started(wpa_s, ssid, persistent, 1, ip_ptr);
7284 }
7285
7286
7287 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
7288                           u32 interval1, u32 duration2, u32 interval2)
7289 {
7290         int ret;
7291
7292         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7293                 return -1;
7294
7295         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
7296             wpa_s->current_ssid == NULL ||
7297             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
7298                 return -1;
7299
7300         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
7301                                wpa_s->own_addr, wpa_s->assoc_freq,
7302                                duration1, interval1, duration2, interval2);
7303         if (ret == 0)
7304                 wpa_s->waiting_presence_resp = 1;
7305
7306         return ret;
7307 }
7308
7309
7310 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
7311                         unsigned int interval)
7312 {
7313         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7314                 return -1;
7315
7316         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
7317 }
7318
7319
7320 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
7321 {
7322         if (wpa_s->current_ssid == NULL) {
7323                 /*
7324                  * current_ssid can be cleared when P2P client interface gets
7325                  * disconnected, so assume this interface was used as P2P
7326                  * client.
7327                  */
7328                 return 1;
7329         }
7330         return wpa_s->current_ssid->p2p_group &&
7331                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
7332 }
7333
7334
7335 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
7336 {
7337         struct wpa_supplicant *wpa_s = eloop_ctx;
7338
7339         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
7340                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
7341                            "disabled");
7342                 return;
7343         }
7344
7345         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
7346                    "group");
7347         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7348 }
7349
7350
7351 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7352 {
7353         int timeout;
7354
7355         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7356                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7357
7358         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7359                 return;
7360
7361         timeout = wpa_s->conf->p2p_group_idle;
7362         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7363             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7364             timeout = P2P_MAX_CLIENT_IDLE;
7365
7366         if (timeout == 0)
7367                 return;
7368
7369         if (timeout < 0) {
7370                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7371                         timeout = 0; /* special client mode no-timeout */
7372                 else
7373                         return;
7374         }
7375
7376         if (wpa_s->p2p_in_provisioning) {
7377                 /*
7378                  * Use the normal group formation timeout during the
7379                  * provisioning phase to avoid terminating this process too
7380                  * early due to group idle timeout.
7381                  */
7382                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7383                            "during provisioning");
7384                 return;
7385         }
7386
7387         if (wpa_s->show_group_started) {
7388                 /*
7389                  * Use the normal group formation timeout between the end of
7390                  * the provisioning phase and completion of 4-way handshake to
7391                  * avoid terminating this process too early due to group idle
7392                  * timeout.
7393                  */
7394                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7395                            "while waiting for initial 4-way handshake to "
7396                            "complete");
7397                 return;
7398         }
7399
7400         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7401                    timeout);
7402         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7403                                wpa_s, NULL);
7404 }
7405
7406
7407 /* Returns 1 if the interface was removed */
7408 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7409                           u16 reason_code, const u8 *ie, size_t ie_len,
7410                           int locally_generated)
7411 {
7412         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7413                 return 0;
7414
7415         if (!locally_generated)
7416                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7417                                  ie_len);
7418
7419         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7420             wpa_s->current_ssid &&
7421             wpa_s->current_ssid->p2p_group &&
7422             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7423                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7424                            "session is ending");
7425                 if (wpas_p2p_group_delete(wpa_s,
7426                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7427                     > 0)
7428                         return 1;
7429         }
7430
7431         return 0;
7432 }
7433
7434
7435 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7436                              u16 reason_code, const u8 *ie, size_t ie_len,
7437                              int locally_generated)
7438 {
7439         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7440                 return;
7441
7442         if (!locally_generated)
7443                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7444                                    ie_len);
7445 }
7446
7447
7448 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7449 {
7450         struct p2p_data *p2p = wpa_s->global->p2p;
7451
7452         if (p2p == NULL)
7453                 return;
7454
7455         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7456                 return;
7457
7458         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7459                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7460
7461         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7462                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7463
7464         if (wpa_s->wps &&
7465             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7466                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7467
7468         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7469                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7470
7471         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7472                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7473                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7474                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7475                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7476         }
7477
7478         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7479                 p2p_set_sec_dev_types(p2p,
7480                                       (void *) wpa_s->conf->sec_device_type,
7481                                       wpa_s->conf->num_sec_device_types);
7482
7483         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7484                 int i;
7485                 p2p_remove_wps_vendor_extensions(p2p);
7486                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7487                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7488                                 continue;
7489                         p2p_add_wps_vendor_extension(
7490                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
7491                 }
7492         }
7493
7494         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7495             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7496                 char country[3];
7497                 country[0] = wpa_s->conf->country[0];
7498                 country[1] = wpa_s->conf->country[1];
7499                 country[2] = 0x04;
7500                 p2p_set_country(p2p, country);
7501         }
7502
7503         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7504                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7505                                      wpa_s->conf->p2p_ssid_postfix ?
7506                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7507                                      0);
7508         }
7509
7510         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7511                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7512
7513         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7514                 u8 reg_class, channel;
7515                 int ret;
7516                 unsigned int r;
7517                 u8 channel_forced;
7518
7519                 if (wpa_s->conf->p2p_listen_reg_class &&
7520                     wpa_s->conf->p2p_listen_channel) {
7521                         reg_class = wpa_s->conf->p2p_listen_reg_class;
7522                         channel = wpa_s->conf->p2p_listen_channel;
7523                         channel_forced = 1;
7524                 } else {
7525                         reg_class = 81;
7526                         /*
7527                          * Pick one of the social channels randomly as the
7528                          * listen channel.
7529                          */
7530                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7531                                 channel = 1;
7532                         else
7533                                 channel = 1 + (r % 3) * 5;
7534                         channel_forced = 0;
7535                 }
7536                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7537                                              channel_forced);
7538                 if (ret)
7539                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7540                                    "failed: %d", ret);
7541         }
7542         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7543                 u8 op_reg_class, op_channel, cfg_op_channel;
7544                 int ret = 0;
7545                 unsigned int r;
7546                 if (wpa_s->conf->p2p_oper_reg_class &&
7547                     wpa_s->conf->p2p_oper_channel) {
7548                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7549                         op_channel = wpa_s->conf->p2p_oper_channel;
7550                         cfg_op_channel = 1;
7551                 } else {
7552                         op_reg_class = 81;
7553                         /*
7554                          * Use random operation channel from (1, 6, 11)
7555                          *if no other preference is indicated.
7556                          */
7557                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7558                                 op_channel = 1;
7559                         else
7560                                 op_channel = 1 + (r % 3) * 5;
7561                         cfg_op_channel = 0;
7562                 }
7563                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7564                                            cfg_op_channel);
7565                 if (ret)
7566                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7567                                    "failed: %d", ret);
7568         }
7569
7570         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7571                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7572                                       wpa_s->conf->p2p_pref_chan) < 0) {
7573                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7574                                    "update failed");
7575                 }
7576
7577                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7578                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7579                                    "update failed");
7580                 }
7581         }
7582
7583         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7584                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7585 }
7586
7587
7588 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7589                      int duration)
7590 {
7591         if (!wpa_s->ap_iface)
7592                 return -1;
7593         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7594                                    duration);
7595 }
7596
7597
7598 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7599 {
7600         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7601                 return -1;
7602
7603         wpa_s->global->cross_connection = enabled;
7604         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7605
7606         if (!enabled) {
7607                 struct wpa_supplicant *iface;
7608
7609                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7610                 {
7611                         if (iface->cross_connect_enabled == 0)
7612                                 continue;
7613
7614                         iface->cross_connect_enabled = 0;
7615                         iface->cross_connect_in_use = 0;
7616                         wpa_msg_global(iface->p2pdev, MSG_INFO,
7617                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7618                                        iface->ifname,
7619                                        iface->cross_connect_uplink);
7620                 }
7621         }
7622
7623         return 0;
7624 }
7625
7626
7627 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7628 {
7629         struct wpa_supplicant *iface;
7630
7631         if (!uplink->global->cross_connection)
7632                 return;
7633
7634         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7635                 if (!iface->cross_connect_enabled)
7636                         continue;
7637                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7638                     0)
7639                         continue;
7640                 if (iface->ap_iface == NULL)
7641                         continue;
7642                 if (iface->cross_connect_in_use)
7643                         continue;
7644
7645                 iface->cross_connect_in_use = 1;
7646                 wpa_msg_global(iface->p2pdev, MSG_INFO,
7647                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7648                                iface->ifname, iface->cross_connect_uplink);
7649         }
7650 }
7651
7652
7653 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7654 {
7655         struct wpa_supplicant *iface;
7656
7657         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7658                 if (!iface->cross_connect_enabled)
7659                         continue;
7660                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7661                     0)
7662                         continue;
7663                 if (!iface->cross_connect_in_use)
7664                         continue;
7665
7666                 wpa_msg_global(iface->p2pdev, MSG_INFO,
7667                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7668                                iface->ifname, iface->cross_connect_uplink);
7669                 iface->cross_connect_in_use = 0;
7670         }
7671 }
7672
7673
7674 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7675 {
7676         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7677             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7678             wpa_s->cross_connect_disallowed)
7679                 wpas_p2p_disable_cross_connect(wpa_s);
7680         else
7681                 wpas_p2p_enable_cross_connect(wpa_s);
7682         if (!wpa_s->ap_iface &&
7683             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7684                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7685 }
7686
7687
7688 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7689 {
7690         wpas_p2p_disable_cross_connect(wpa_s);
7691         if (!wpa_s->ap_iface &&
7692             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7693                                          wpa_s, NULL))
7694                 wpas_p2p_set_group_idle_timeout(wpa_s);
7695 }
7696
7697
7698 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7699 {
7700         struct wpa_supplicant *iface;
7701
7702         if (!wpa_s->global->cross_connection)
7703                 return;
7704
7705         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7706                 if (iface == wpa_s)
7707                         continue;
7708                 if (iface->drv_flags &
7709                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7710                         continue;
7711                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7712                     iface != wpa_s->parent)
7713                         continue;
7714
7715                 wpa_s->cross_connect_enabled = 1;
7716                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7717                            sizeof(wpa_s->cross_connect_uplink));
7718                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7719                            "%s to %s whenever uplink is available",
7720                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7721
7722                 if (iface->ap_iface || iface->current_ssid == NULL ||
7723                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7724                     iface->cross_connect_disallowed ||
7725                     iface->wpa_state != WPA_COMPLETED)
7726                         break;
7727
7728                 wpa_s->cross_connect_in_use = 1;
7729                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
7730                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7731                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7732                 break;
7733         }
7734 }
7735
7736
7737 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7738 {
7739         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7740             !wpa_s->p2p_in_provisioning)
7741                 return 0; /* not P2P client operation */
7742
7743         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7744                    "session overlap");
7745         if (wpa_s != wpa_s->p2pdev)
7746                 wpa_msg_ctrl(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_OVERLAP);
7747         wpas_p2p_group_formation_failed(wpa_s, 0);
7748         return 1;
7749 }
7750
7751
7752 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7753 {
7754         struct wpa_supplicant *wpa_s = eloop_ctx;
7755         wpas_p2p_notif_pbc_overlap(wpa_s);
7756 }
7757
7758
7759 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7760                                   enum wpas_p2p_channel_update_trig trig)
7761 {
7762         struct p2p_channels chan, cli_chan;
7763         struct wpa_used_freq_data *freqs = NULL;
7764         unsigned int num = wpa_s->num_multichan_concurrent;
7765
7766         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7767                 return;
7768
7769         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7770         if (!freqs)
7771                 return;
7772
7773         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7774
7775         os_memset(&chan, 0, sizeof(chan));
7776         os_memset(&cli_chan, 0, sizeof(cli_chan));
7777         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7778                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7779                            "channel list");
7780                 return;
7781         }
7782
7783         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7784
7785         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7786
7787         /*
7788          * The used frequencies map changed, so it is possible that a GO is
7789          * using a channel that is no longer valid for P2P use. It is also
7790          * possible that due to policy consideration, it would be preferable to
7791          * move it to a frequency already used by other station interfaces.
7792          */
7793         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7794
7795         os_free(freqs);
7796 }
7797
7798
7799 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7800                                      struct wpa_scan_results *scan_res)
7801 {
7802         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7803 }
7804
7805
7806 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7807 {
7808         struct wpa_global *global = wpa_s->global;
7809         int found = 0;
7810         const u8 *peer;
7811
7812         if (global->p2p == NULL)
7813                 return -1;
7814
7815         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7816
7817         if (wpa_s->pending_interface_name[0] &&
7818             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7819                 found = 1;
7820
7821         peer = p2p_get_go_neg_peer(global->p2p);
7822         if (peer) {
7823                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7824                            MACSTR, MAC2STR(peer));
7825                 p2p_unauthorize(global->p2p, peer);
7826                 found = 1;
7827         }
7828
7829         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7830                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7831                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7832                 found = 1;
7833         }
7834
7835         if (wpa_s->pending_pd_before_join) {
7836                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7837                 wpa_s->pending_pd_before_join = 0;
7838                 found = 1;
7839         }
7840
7841         wpas_p2p_stop_find(wpa_s);
7842
7843         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7844                 if (wpa_s == global->p2p_group_formation &&
7845                     (wpa_s->p2p_in_provisioning ||
7846                      wpa_s->parent->pending_interface_type ==
7847                      WPA_IF_P2P_CLIENT)) {
7848                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7849                                    "formation found - cancelling",
7850                                    wpa_s->ifname);
7851                         found = 1;
7852                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7853                                              wpa_s->p2pdev, NULL);
7854                         if (wpa_s->p2p_in_provisioning) {
7855                                 wpas_group_formation_completed(wpa_s, 0, 0);
7856                                 break;
7857                         }
7858                         wpas_p2p_group_delete(wpa_s,
7859                                               P2P_GROUP_REMOVAL_REQUESTED);
7860                         break;
7861                 } else if (wpa_s->p2p_in_invitation) {
7862                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7863                                    wpa_s->ifname);
7864                         found = 1;
7865                         wpas_p2p_group_formation_failed(wpa_s, 0);
7866                         break;
7867                 }
7868         }
7869
7870         if (!found) {
7871                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7872                 return -1;
7873         }
7874
7875         return 0;
7876 }
7877
7878
7879 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7880 {
7881         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7882                 return;
7883
7884         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7885                    "being available anymore");
7886         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7887 }
7888
7889
7890 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7891                                    int freq_24, int freq_5, int freq_overall)
7892 {
7893         struct p2p_data *p2p = wpa_s->global->p2p;
7894         if (p2p == NULL)
7895                 return;
7896         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7897 }
7898
7899
7900 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7901 {
7902         u8 peer[ETH_ALEN];
7903         struct p2p_data *p2p = wpa_s->global->p2p;
7904
7905         if (p2p == NULL)
7906                 return -1;
7907
7908         if (hwaddr_aton(addr, peer))
7909                 return -1;
7910
7911         return p2p_unauthorize(p2p, peer);
7912 }
7913
7914
7915 /**
7916  * wpas_p2p_disconnect - Disconnect from a P2P Group
7917  * @wpa_s: Pointer to wpa_supplicant data
7918  * Returns: 0 on success, -1 on failure
7919  *
7920  * This can be used to disconnect from a group in which the local end is a P2P
7921  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7922  * virtual network interface was created for this group, that interface will be
7923  * removed. Otherwise, only the configured P2P group network will be removed
7924  * from the interface.
7925  */
7926 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7927 {
7928
7929         if (wpa_s == NULL)
7930                 return -1;
7931
7932         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7933                 -1 : 0;
7934 }
7935
7936
7937 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7938 {
7939         int ret;
7940
7941         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7942                 return 0;
7943
7944         ret = p2p_in_progress(wpa_s->global->p2p);
7945         if (ret == 0) {
7946                 /*
7947                  * Check whether there is an ongoing WPS provisioning step (or
7948                  * other parts of group formation) on another interface since
7949                  * p2p_in_progress() does not report this to avoid issues for
7950                  * scans during such provisioning step.
7951                  */
7952                 if (wpa_s->global->p2p_group_formation &&
7953                     wpa_s->global->p2p_group_formation != wpa_s) {
7954                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7955                                 "in group formation",
7956                                 wpa_s->global->p2p_group_formation->ifname);
7957                         ret = 1;
7958                 }
7959         }
7960
7961         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7962                 struct os_reltime now;
7963                 os_get_reltime(&now);
7964                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7965                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7966                         /* Wait for the first client has expired */
7967                         wpa_s->global->p2p_go_wait_client.sec = 0;
7968                 } else {
7969                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7970                         ret = 1;
7971                 }
7972         }
7973
7974         return ret;
7975 }
7976
7977
7978 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7979                               struct wpa_ssid *ssid)
7980 {
7981         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7982             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7983                                  wpa_s->p2pdev, NULL) > 0) {
7984                 /**
7985                  * Remove the network by scheduling the group formation
7986                  * timeout to happen immediately. The teardown code
7987                  * needs to be scheduled to run asynch later so that we
7988                  * don't delete data from under ourselves unexpectedly.
7989                  * Calling wpas_p2p_group_formation_timeout directly
7990                  * causes a series of crashes in WPS failure scenarios.
7991                  */
7992                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7993                            "P2P group network getting removed");
7994                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7995                                        wpa_s->p2pdev, NULL);
7996         }
7997 }
7998
7999
8000 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
8001                                           const u8 *addr, const u8 *ssid,
8002                                           size_t ssid_len)
8003 {
8004         struct wpa_ssid *s;
8005         size_t i;
8006
8007         for (s = wpa_s->conf->ssid; s; s = s->next) {
8008                 if (s->disabled != 2)
8009                         continue;
8010                 if (ssid &&
8011                     (ssid_len != s->ssid_len ||
8012                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
8013                         continue;
8014                 if (addr == NULL) {
8015                         if (s->mode == WPAS_MODE_P2P_GO)
8016                                 return s;
8017                         continue;
8018                 }
8019                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
8020                         return s; /* peer is GO in the persistent group */
8021                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
8022                         continue;
8023                 for (i = 0; i < s->num_p2p_clients; i++) {
8024                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
8025                                       addr, ETH_ALEN) == 0)
8026                                 return s; /* peer is P2P client in persistent
8027                                            * group */
8028                 }
8029         }
8030
8031         return NULL;
8032 }
8033
8034
8035 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
8036                                        const u8 *addr)
8037 {
8038         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
8039                                  wpa_s->p2pdev, NULL) > 0) {
8040                 /*
8041                  * This can happen if WPS provisioning step is not terminated
8042                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
8043                  * peer was able to connect, there is no need to time out group
8044                  * formation after this, though. In addition, this is used with
8045                  * the initial connection wait on the GO as a separate formation
8046                  * timeout and as such, expected to be hit after the initial WPS
8047                  * provisioning step.
8048                  */
8049                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
8050
8051                 if (!wpa_s->p2p_go_group_formation_completed &&
8052                     !wpa_s->group_formation_reported) {
8053                         /*
8054                          * GO has not yet notified group formation success since
8055                          * the WPS step was not completed cleanly. Do that
8056                          * notification now since the P2P Client was able to
8057                          * connect and as such, must have received the
8058                          * credential from the WPS step.
8059                          */
8060                         if (wpa_s->global->p2p)
8061                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
8062                         wpas_group_formation_completed(wpa_s, 1, 0);
8063                 }
8064         }
8065         if (!wpa_s->p2p_go_group_formation_completed) {
8066                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
8067                 wpa_s->p2p_go_group_formation_completed = 1;
8068                 wpa_s->global->p2p_group_formation = NULL;
8069                 wpa_s->p2p_in_provisioning = 0;
8070                 wpa_s->p2p_in_invitation = 0;
8071         }
8072         wpa_s->global->p2p_go_wait_client.sec = 0;
8073         if (addr == NULL)
8074                 return;
8075         wpas_p2p_add_persistent_group_client(wpa_s, addr);
8076 }
8077
8078
8079 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
8080                                        int group_added)
8081 {
8082         struct wpa_supplicant *group = wpa_s;
8083         int ret = 0;
8084
8085         if (wpa_s->global->p2p_group_formation)
8086                 group = wpa_s->global->p2p_group_formation;
8087         wpa_s = wpa_s->global->p2p_init_wpa_s;
8088         offchannel_send_action_done(wpa_s);
8089         if (group_added)
8090                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
8091         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
8092         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
8093                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
8094                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
8095                          wpa_s->p2p_go_vht_center_freq2,
8096                          wpa_s->p2p_persistent_id,
8097                          wpa_s->p2p_pd_before_go_neg,
8098                          wpa_s->p2p_go_ht40,
8099                          wpa_s->p2p_go_vht,
8100                          wpa_s->p2p_go_max_oper_chwidth,
8101                          wpa_s->p2p_go_he, NULL, 0);
8102         return ret;
8103 }
8104
8105
8106 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
8107 {
8108         int res;
8109
8110         if (!wpa_s->p2p_fallback_to_go_neg ||
8111             wpa_s->p2p_in_provisioning <= 5)
8112                 return 0;
8113
8114         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
8115                 return 0; /* peer operating as a GO */
8116
8117         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
8118                 "fallback to GO Negotiation");
8119         wpa_msg_global(wpa_s->p2pdev, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
8120                        "reason=GO-not-found");
8121         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
8122
8123         return res == 1 ? 2 : 1;
8124 }
8125
8126
8127 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
8128 {
8129         struct wpa_supplicant *ifs;
8130
8131         if (wpa_s->wpa_state > WPA_SCANNING) {
8132                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
8133                         "concurrent operation",
8134                         wpa_s->conf->p2p_search_delay);
8135                 return wpa_s->conf->p2p_search_delay;
8136         }
8137
8138         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
8139                          radio_list) {
8140                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
8141                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
8142                                 "delay due to concurrent operation on "
8143                                 "interface %s",
8144                                 wpa_s->conf->p2p_search_delay,
8145                                 ifs->ifname);
8146                         return wpa_s->conf->p2p_search_delay;
8147                 }
8148         }
8149
8150         return 0;
8151 }
8152
8153
8154 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
8155                                      struct wpa_ssid *s, const u8 *addr,
8156                                      int iface_addr)
8157 {
8158         struct psk_list_entry *psk, *tmp;
8159         int changed = 0;
8160
8161         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
8162                               list) {
8163                 if ((iface_addr && !psk->p2p &&
8164                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
8165                     (!iface_addr && psk->p2p &&
8166                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
8167                         wpa_dbg(wpa_s, MSG_DEBUG,
8168                                 "P2P: Remove persistent group PSK list entry for "
8169                                 MACSTR " p2p=%u",
8170                                 MAC2STR(psk->addr), psk->p2p);
8171                         dl_list_del(&psk->list);
8172                         os_free(psk);
8173                         changed++;
8174                 }
8175         }
8176
8177         return changed;
8178 }
8179
8180
8181 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
8182                          const u8 *p2p_dev_addr,
8183                          const u8 *psk, size_t psk_len)
8184 {
8185         struct wpa_ssid *ssid = wpa_s->current_ssid;
8186         struct wpa_ssid *persistent;
8187         struct psk_list_entry *p, *last;
8188
8189         if (psk_len != sizeof(p->psk))
8190                 return;
8191
8192         if (p2p_dev_addr) {
8193                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
8194                         " p2p_dev_addr=" MACSTR,
8195                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
8196                 if (is_zero_ether_addr(p2p_dev_addr))
8197                         p2p_dev_addr = NULL;
8198         } else {
8199                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
8200                         MAC2STR(mac_addr));
8201         }
8202
8203         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
8204                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
8205                 /* To be added to persistent group once created */
8206                 if (wpa_s->global->add_psk == NULL) {
8207                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
8208                         if (wpa_s->global->add_psk == NULL)
8209                                 return;
8210                 }
8211                 p = wpa_s->global->add_psk;
8212                 if (p2p_dev_addr) {
8213                         p->p2p = 1;
8214                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
8215                 } else {
8216                         p->p2p = 0;
8217                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
8218                 }
8219                 os_memcpy(p->psk, psk, psk_len);
8220                 return;
8221         }
8222
8223         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
8224                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
8225                 return;
8226         }
8227
8228         persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
8229                                              ssid->ssid_len);
8230         if (!persistent) {
8231                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
8232                 return;
8233         }
8234
8235         p = os_zalloc(sizeof(*p));
8236         if (p == NULL)
8237                 return;
8238         if (p2p_dev_addr) {
8239                 p->p2p = 1;
8240                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
8241         } else {
8242                 p->p2p = 0;
8243                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
8244         }
8245         os_memcpy(p->psk, psk, psk_len);
8246
8247         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
8248             (last = dl_list_last(&persistent->psk_list,
8249                                  struct psk_list_entry, list))) {
8250                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
8251                         MACSTR " (p2p=%u) to make room for a new one",
8252                         MAC2STR(last->addr), last->p2p);
8253                 dl_list_del(&last->list);
8254                 os_free(last);
8255         }
8256
8257         wpas_p2p_remove_psk_entry(wpa_s->p2pdev, persistent,
8258                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
8259                                   p2p_dev_addr == NULL);
8260         if (p2p_dev_addr) {
8261                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
8262                         MACSTR, MAC2STR(p2p_dev_addr));
8263         } else {
8264                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
8265                         MAC2STR(mac_addr));
8266         }
8267         dl_list_add(&persistent->psk_list, &p->list);
8268
8269         if (wpa_s->p2pdev->conf->update_config &&
8270             wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
8271                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
8272 }
8273
8274
8275 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
8276                                 struct wpa_ssid *s, const u8 *addr,
8277                                 int iface_addr)
8278 {
8279         int res;
8280
8281         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
8282         if (res > 0 && wpa_s->conf->update_config &&
8283             wpa_config_write(wpa_s->confname, wpa_s->conf))
8284                 wpa_dbg(wpa_s, MSG_DEBUG,
8285                         "P2P: Failed to update configuration");
8286 }
8287
8288
8289 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
8290                                       const u8 *peer, int iface_addr)
8291 {
8292         struct hostapd_data *hapd;
8293         struct hostapd_wpa_psk *psk, *prev, *rem;
8294         struct sta_info *sta;
8295
8296         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
8297             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
8298                 return;
8299
8300         /* Remove per-station PSK entry */
8301         hapd = wpa_s->ap_iface->bss[0];
8302         prev = NULL;
8303         psk = hapd->conf->ssid.wpa_psk;
8304         while (psk) {
8305                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
8306                     (!iface_addr &&
8307                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
8308                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
8309                                 MACSTR " iface_addr=%d",
8310                                 MAC2STR(peer), iface_addr);
8311                         if (prev)
8312                                 prev->next = psk->next;
8313                         else
8314                                 hapd->conf->ssid.wpa_psk = psk->next;
8315                         rem = psk;
8316                         psk = psk->next;
8317                         os_free(rem);
8318                 } else {
8319                         prev = psk;
8320                         psk = psk->next;
8321                 }
8322         }
8323
8324         /* Disconnect from group */
8325         if (iface_addr)
8326                 sta = ap_get_sta(hapd, peer);
8327         else
8328                 sta = ap_get_sta_p2p(hapd, peer);
8329         if (sta) {
8330                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
8331                         " (iface_addr=%d) from group",
8332                         MAC2STR(peer), iface_addr);
8333                 hostapd_drv_sta_deauth(hapd, sta->addr,
8334                                        WLAN_REASON_DEAUTH_LEAVING);
8335                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
8336         }
8337 }
8338
8339
8340 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
8341                             int iface_addr)
8342 {
8343         struct wpa_ssid *s;
8344         struct wpa_supplicant *w;
8345         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
8346
8347         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
8348
8349         /* Remove from any persistent group */
8350         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
8351                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8352                         continue;
8353                 if (!iface_addr)
8354                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
8355                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
8356         }
8357
8358         /* Remove from any operating group */
8359         for (w = wpa_s->global->ifaces; w; w = w->next)
8360                 wpas_p2p_remove_client_go(w, peer, iface_addr);
8361 }
8362
8363
8364 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8365 {
8366         struct wpa_supplicant *wpa_s = eloop_ctx;
8367         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8368 }
8369
8370
8371 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8372 {
8373         struct wpa_supplicant *wpa_s = eloop_ctx;
8374
8375         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8376         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8377 }
8378
8379
8380 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8381                                         struct wpa_ssid *ssid)
8382 {
8383         struct wpa_supplicant *iface;
8384
8385         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8386                 if (!iface->current_ssid ||
8387                     iface->current_ssid->frequency == freq ||
8388                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8389                      !iface->current_ssid->p2p_group))
8390                         continue;
8391
8392                 /* Remove the connection with least priority */
8393                 if (!wpas_is_p2p_prioritized(iface)) {
8394                         /* STA connection has priority over existing
8395                          * P2P connection, so remove the interface. */
8396                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8397                         eloop_register_timeout(0, 0,
8398                                                wpas_p2p_group_freq_conflict,
8399                                                iface, NULL);
8400                         /* If connection in progress is P2P connection, do not
8401                          * proceed for the connection. */
8402                         if (wpa_s == iface)
8403                                 return -1;
8404                         else
8405                                 return 0;
8406                 } else {
8407                         /* P2P connection has priority, disable the STA network
8408                          */
8409                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
8410                                                        ssid);
8411                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8412                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8413                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8414                                   ETH_ALEN);
8415                         /* If P2P connection is in progress, continue
8416                          * connecting...*/
8417                         if (wpa_s == iface)
8418                                 return 0;
8419                         else
8420                                 return -1;
8421                 }
8422         }
8423
8424         return 0;
8425 }
8426
8427
8428 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8429 {
8430         struct wpa_ssid *ssid = wpa_s->current_ssid;
8431
8432         if (ssid == NULL || !ssid->p2p_group)
8433                 return 0;
8434
8435         if (wpa_s->p2p_last_4way_hs_fail &&
8436             wpa_s->p2p_last_4way_hs_fail == ssid) {
8437                 u8 go_dev_addr[ETH_ALEN];
8438                 struct wpa_ssid *persistent;
8439
8440                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8441                                               ssid->ssid,
8442                                               ssid->ssid_len) <= 0) {
8443                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8444                         goto disconnect;
8445                 }
8446
8447                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8448                         MACSTR, MAC2STR(go_dev_addr));
8449                 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, go_dev_addr,
8450                                                      ssid->ssid,
8451                                                      ssid->ssid_len);
8452                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8453                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8454                         goto disconnect;
8455                 }
8456                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
8457                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8458                                persistent->id);
8459         disconnect:
8460                 wpa_s->p2p_last_4way_hs_fail = NULL;
8461                 /*
8462                  * Remove the group from a timeout to avoid issues with caller
8463                  * continuing to use the interface if this is on a P2P group
8464                  * interface.
8465                  */
8466                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8467                                        wpa_s, NULL);
8468                 return 1;
8469         }
8470
8471         wpa_s->p2p_last_4way_hs_fail = ssid;
8472         return 0;
8473 }
8474
8475
8476 #ifdef CONFIG_WPS_NFC
8477
8478 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8479                                              struct wpabuf *p2p)
8480 {
8481         struct wpabuf *ret;
8482         size_t wsc_len;
8483
8484         if (p2p == NULL) {
8485                 wpabuf_free(wsc);
8486                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8487                 return NULL;
8488         }
8489
8490         wsc_len = wsc ? wpabuf_len(wsc) : 0;
8491         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8492         if (ret == NULL) {
8493                 wpabuf_free(wsc);
8494                 wpabuf_free(p2p);
8495                 return NULL;
8496         }
8497
8498         wpabuf_put_be16(ret, wsc_len);
8499         if (wsc)
8500                 wpabuf_put_buf(ret, wsc);
8501         wpabuf_put_be16(ret, wpabuf_len(p2p));
8502         wpabuf_put_buf(ret, p2p);
8503
8504         wpabuf_free(wsc);
8505         wpabuf_free(p2p);
8506         wpa_hexdump_buf(MSG_DEBUG,
8507                         "P2P: Generated NFC connection handover message", ret);
8508
8509         if (ndef && ret) {
8510                 struct wpabuf *tmp;
8511                 tmp = ndef_build_p2p(ret);
8512                 wpabuf_free(ret);
8513                 if (tmp == NULL) {
8514                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8515                         return NULL;
8516                 }
8517                 ret = tmp;
8518         }
8519
8520         return ret;
8521 }
8522
8523
8524 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8525                              struct wpa_ssid **ssid, u8 *go_dev_addr)
8526 {
8527         struct wpa_supplicant *iface;
8528
8529         if (go_dev_addr)
8530                 os_memset(go_dev_addr, 0, ETH_ALEN);
8531         if (ssid)
8532                 *ssid = NULL;
8533         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8534                 if (iface->wpa_state < WPA_ASSOCIATING ||
8535                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8536                     !iface->current_ssid->p2p_group ||
8537                     iface->current_ssid->mode != WPAS_MODE_INFRA)
8538                         continue;
8539                 if (ssid)
8540                         *ssid = iface->current_ssid;
8541                 if (go_dev_addr)
8542                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8543                 return iface->assoc_freq;
8544         }
8545         return 0;
8546 }
8547
8548
8549 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8550                                           int ndef)
8551 {
8552         struct wpabuf *wsc, *p2p;
8553         struct wpa_ssid *ssid;
8554         u8 go_dev_addr[ETH_ALEN];
8555         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8556
8557         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8558                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8559                 return NULL;
8560         }
8561
8562         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8563             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8564                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8565                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8566                 return NULL;
8567         }
8568
8569         if (cli_freq == 0) {
8570                 wsc = wps_build_nfc_handover_req_p2p(
8571                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8572         } else
8573                 wsc = NULL;
8574         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8575                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8576                                          ssid ? ssid->ssid_len : 0);
8577
8578         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8579 }
8580
8581
8582 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8583                                           int ndef, int tag)
8584 {
8585         struct wpabuf *wsc, *p2p;
8586         struct wpa_ssid *ssid;
8587         u8 go_dev_addr[ETH_ALEN];
8588         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8589
8590         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8591                 return NULL;
8592
8593         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8594             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8595                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8596                 return NULL;
8597
8598         if (cli_freq == 0) {
8599                 wsc = wps_build_nfc_handover_sel_p2p(
8600                         wpa_s->parent->wps,
8601                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8602                         DEV_PW_NFC_CONNECTION_HANDOVER,
8603                         wpa_s->conf->wps_nfc_dh_pubkey,
8604                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8605         } else
8606                 wsc = NULL;
8607         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8608                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8609                                          ssid ? ssid->ssid_len : 0);
8610
8611         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8612 }
8613
8614
8615 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8616                                    struct p2p_nfc_params *params)
8617 {
8618         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8619                    "connection handover (freq=%d)",
8620                    params->go_freq);
8621
8622         if (params->go_freq && params->go_ssid_len) {
8623                 wpa_s->p2p_wps_method = WPS_NFC;
8624                 wpa_s->pending_join_wps_method = WPS_NFC;
8625                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8626                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8627                           ETH_ALEN);
8628                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8629                                            params->go_ssid,
8630                                            params->go_ssid_len);
8631         }
8632
8633         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8634                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8635                                 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8636                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8637                                 wpa_s->p2p_go_he,
8638                                 params->go_ssid_len ? params->go_ssid : NULL,
8639                                 params->go_ssid_len);
8640 }
8641
8642
8643 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8644                                   struct p2p_nfc_params *params, int tag)
8645 {
8646         int res, persistent;
8647         struct wpa_ssid *ssid;
8648
8649         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8650                    "connection handover");
8651         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8652                 ssid = wpa_s->current_ssid;
8653                 if (ssid == NULL)
8654                         continue;
8655                 if (ssid->mode != WPAS_MODE_P2P_GO)
8656                         continue;
8657                 if (wpa_s->ap_iface == NULL)
8658                         continue;
8659                 break;
8660         }
8661         if (wpa_s == NULL) {
8662                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8663                 return -1;
8664         }
8665
8666         if (wpa_s->p2pdev->p2p_oob_dev_pw_id !=
8667             DEV_PW_NFC_CONNECTION_HANDOVER &&
8668             !wpa_s->p2pdev->p2p_oob_dev_pw) {
8669                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8670                 return -1;
8671         }
8672         res = wpas_ap_wps_add_nfc_pw(
8673                 wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id,
8674                 wpa_s->p2pdev->p2p_oob_dev_pw,
8675                 wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ?
8676                 wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL);
8677         if (res)
8678                 return res;
8679
8680         if (!tag) {
8681                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8682                 return 0;
8683         }
8684
8685         if (!params->peer ||
8686             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8687                 return 0;
8688
8689         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8690                    " to join", MAC2STR(params->peer->p2p_device_addr));
8691
8692         wpa_s->global->p2p_invite_group = wpa_s;
8693         persistent = ssid->p2p_persistent_group &&
8694                 wpas_p2p_get_persistent(wpa_s->p2pdev,
8695                                         params->peer->p2p_device_addr,
8696                                         ssid->ssid, ssid->ssid_len);
8697         wpa_s->p2pdev->pending_invite_ssid_id = -1;
8698
8699         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8700                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8701                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8702                           wpa_s->global->p2p_dev_addr, persistent, 0,
8703                           wpa_s->p2pdev->p2p_oob_dev_pw_id);
8704 }
8705
8706
8707 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8708                                     struct p2p_nfc_params *params,
8709                                     int forced_freq)
8710 {
8711         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8712                    "connection handover");
8713         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8714                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8715                                 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8716                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8717                                 wpa_s->p2p_go_he, NULL, 0);
8718 }
8719
8720
8721 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8722                                     struct p2p_nfc_params *params,
8723                                     int forced_freq)
8724 {
8725         int res;
8726
8727         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8728                    "connection handover");
8729         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8730                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8731                                forced_freq, wpa_s->p2p_go_vht_center_freq2,
8732                                -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8733                                wpa_s->p2p_go_he, NULL, 0);
8734         if (res)
8735                 return res;
8736
8737         res = wpas_p2p_listen(wpa_s, 60);
8738         if (res) {
8739                 p2p_unauthorize(wpa_s->global->p2p,
8740                                 params->peer->p2p_device_addr);
8741         }
8742
8743         return res;
8744 }
8745
8746
8747 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8748                                             const struct wpabuf *data,
8749                                             int sel, int tag, int forced_freq)
8750 {
8751         const u8 *pos, *end;
8752         u16 len, id;
8753         struct p2p_nfc_params params;
8754         int res;
8755
8756         os_memset(&params, 0, sizeof(params));
8757         params.sel = sel;
8758
8759         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8760
8761         pos = wpabuf_head(data);
8762         end = pos + wpabuf_len(data);
8763
8764         if (end - pos < 2) {
8765                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8766                            "attributes");
8767                 return -1;
8768         }
8769         len = WPA_GET_BE16(pos);
8770         pos += 2;
8771         if (len > end - pos) {
8772                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8773                            "attributes");
8774                 return -1;
8775         }
8776         params.wsc_attr = pos;
8777         params.wsc_len = len;
8778         pos += len;
8779
8780         if (end - pos < 2) {
8781                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8782                            "attributes");
8783                 return -1;
8784         }
8785         len = WPA_GET_BE16(pos);
8786         pos += 2;
8787         if (len > end - pos) {
8788                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8789                            "attributes");
8790                 return -1;
8791         }
8792         params.p2p_attr = pos;
8793         params.p2p_len = len;
8794         pos += len;
8795
8796         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8797                     params.wsc_attr, params.wsc_len);
8798         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8799                     params.p2p_attr, params.p2p_len);
8800         if (pos < end) {
8801                 wpa_hexdump(MSG_DEBUG,
8802                             "P2P: Ignored extra data after P2P attributes",
8803                             pos, end - pos);
8804         }
8805
8806         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8807         if (res)
8808                 return res;
8809
8810         if (params.next_step == NO_ACTION)
8811                 return 0;
8812
8813         if (params.next_step == BOTH_GO) {
8814                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8815                         MAC2STR(params.peer->p2p_device_addr));
8816                 return 0;
8817         }
8818
8819         if (params.next_step == PEER_CLIENT) {
8820                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8821                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8822                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8823                                 " ssid=\"%s\"",
8824                                 MAC2STR(params.peer->p2p_device_addr),
8825                                 params.go_freq,
8826                                 MAC2STR(params.go_dev_addr),
8827                                 wpa_ssid_txt(params.go_ssid,
8828                                              params.go_ssid_len));
8829                 } else {
8830                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8831                                 "peer=" MACSTR " freq=%d",
8832                                 MAC2STR(params.peer->p2p_device_addr),
8833                                 params.go_freq);
8834                 }
8835                 return 0;
8836         }
8837
8838         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8839                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8840                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8841                 return 0;
8842         }
8843
8844         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8845         wpa_s->p2p_oob_dev_pw = NULL;
8846
8847         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8848                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8849                            "received");
8850                 return -1;
8851         }
8852
8853         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8854         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8855         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8856                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8857         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8858                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8859         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8860
8861         if (tag) {
8862                 if (id < 0x10) {
8863                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8864                                    "peer OOB Device Password Id %u", id);
8865                         return -1;
8866                 }
8867                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8868                            "Device Password Id %u", id);
8869                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8870                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8871                                 params.oob_dev_pw_len -
8872                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
8873                 wpa_s->p2p_oob_dev_pw_id = id;
8874                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8875                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8876                         params.oob_dev_pw_len -
8877                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8878                 if (wpa_s->p2p_oob_dev_pw == NULL)
8879                         return -1;
8880
8881                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8882                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8883                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8884                         return -1;
8885         } else {
8886                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8887                            "without Device Password");
8888                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8889         }
8890
8891         switch (params.next_step) {
8892         case NO_ACTION:
8893         case BOTH_GO:
8894         case PEER_CLIENT:
8895                 /* already covered above */
8896                 return 0;
8897         case JOIN_GROUP:
8898                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8899         case AUTH_JOIN:
8900                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8901         case INIT_GO_NEG:
8902                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8903         case RESP_GO_NEG:
8904                 /* TODO: use own OOB Dev Pw */
8905                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8906         }
8907
8908         return -1;
8909 }
8910
8911
8912 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8913                              const struct wpabuf *data, int forced_freq)
8914 {
8915         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8916                 return -1;
8917
8918         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8919 }
8920
8921
8922 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8923                                  const struct wpabuf *req,
8924                                  const struct wpabuf *sel, int forced_freq)
8925 {
8926         struct wpabuf *tmp;
8927         int ret;
8928
8929         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8930                 return -1;
8931
8932         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8933
8934         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8935                           wpabuf_head(req), wpabuf_len(req));
8936         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8937                           wpabuf_head(sel), wpabuf_len(sel));
8938         if (forced_freq)
8939                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8940         tmp = ndef_parse_p2p(init ? sel : req);
8941         if (tmp == NULL) {
8942                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8943                 return -1;
8944         }
8945
8946         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8947                                                forced_freq);
8948         wpabuf_free(tmp);
8949
8950         return ret;
8951 }
8952
8953
8954 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8955 {
8956         const u8 *if_addr;
8957         int go_intent = wpa_s->conf->p2p_go_intent;
8958         struct wpa_supplicant *iface;
8959
8960         if (wpa_s->global->p2p == NULL)
8961                 return -1;
8962
8963         if (!enabled) {
8964                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8965                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8966                 {
8967                         if (!iface->ap_iface)
8968                                 continue;
8969                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8970                 }
8971                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8972                                                  0, NULL);
8973                 if (wpa_s->p2p_nfc_tag_enabled)
8974                         wpas_p2p_remove_pending_group_interface(wpa_s);
8975                 wpa_s->p2p_nfc_tag_enabled = 0;
8976                 return 0;
8977         }
8978
8979         if (wpa_s->global->p2p_disabled)
8980                 return -1;
8981
8982         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8983             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8984             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8985             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8986                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8987                            "to allow static handover cases");
8988                 return -1;
8989         }
8990
8991         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8992
8993         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8994         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8995         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8996         if (wpa_s->p2p_oob_dev_pw == NULL)
8997                 return -1;
8998         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8999
9000         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
9001             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
9002                 /*
9003                  * P2P Group Interface present and the command came on group
9004                  * interface, so enable the token for the current interface.
9005                  */
9006                 wpa_s->create_p2p_iface = 0;
9007         } else {
9008                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
9009         }
9010
9011         if (wpa_s->create_p2p_iface) {
9012                 enum wpa_driver_if_type iftype;
9013                 /* Prepare to add a new interface for the group */
9014                 iftype = WPA_IF_P2P_GROUP;
9015                 if (go_intent == 15)
9016                         iftype = WPA_IF_P2P_GO;
9017                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
9018                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
9019                                    "interface for the group");
9020                         return -1;
9021                 }
9022
9023                 if_addr = wpa_s->pending_interface_addr;
9024         } else if (wpa_s->p2p_mgmt)
9025                 if_addr = wpa_s->parent->own_addr;
9026         else
9027                 if_addr = wpa_s->own_addr;
9028
9029         wpa_s->p2p_nfc_tag_enabled = enabled;
9030
9031         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
9032                 struct hostapd_data *hapd;
9033                 if (iface->ap_iface == NULL)
9034                         continue;
9035                 hapd = iface->ap_iface->bss[0];
9036                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
9037                 hapd->conf->wps_nfc_dh_pubkey =
9038                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
9039                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
9040                 hapd->conf->wps_nfc_dh_privkey =
9041                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
9042                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
9043                 hapd->conf->wps_nfc_dev_pw =
9044                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
9045                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
9046
9047                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
9048                         wpa_dbg(iface, MSG_DEBUG,
9049                                 "P2P: Failed to enable NFC Tag for GO");
9050                 }
9051         }
9052         p2p_set_authorized_oob_dev_pw_id(
9053                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
9054                 if_addr);
9055
9056         return 0;
9057 }
9058
9059 #endif /* CONFIG_WPS_NFC */
9060
9061
9062 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
9063                                              struct wpa_used_freq_data *freqs,
9064                                              unsigned int num)
9065 {
9066         u8 curr_chan, cand, chan;
9067         unsigned int i;
9068
9069         /*
9070          * If possible, optimize the Listen channel to be a channel that is
9071          * already used by one of the other interfaces.
9072          */
9073         if (!wpa_s->conf->p2p_optimize_listen_chan)
9074                 return;
9075
9076         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
9077                 return;
9078
9079         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
9080         for (i = 0, cand = 0; i < num; i++) {
9081                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
9082                 if (curr_chan == chan) {
9083                         cand = 0;
9084                         break;
9085                 }
9086
9087                 if (chan == 1 || chan == 6 || chan == 11)
9088                         cand = chan;
9089         }
9090
9091         if (cand) {
9092                 wpa_dbg(wpa_s, MSG_DEBUG,
9093                         "P2P: Update Listen channel to %u based on operating channel",
9094                         cand);
9095                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
9096         }
9097 }
9098
9099
9100 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
9101 {
9102         struct hostapd_config *conf;
9103         struct p2p_go_neg_results params;
9104         struct csa_settings csa_settings;
9105         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
9106         int old_freq = current_ssid->frequency;
9107         int ret;
9108
9109         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
9110                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
9111                 return -1;
9112         }
9113
9114         /*
9115          * TODO: This function may not always work correctly. For example,
9116          * when we have a running GO and a BSS on a DFS channel.
9117          */
9118         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, 0, NULL)) {
9119                 wpa_dbg(wpa_s, MSG_DEBUG,
9120                         "P2P CSA: Failed to select new frequency for GO");
9121                 return -1;
9122         }
9123
9124         if (current_ssid->frequency == params.freq) {
9125                 wpa_dbg(wpa_s, MSG_DEBUG,
9126                         "P2P CSA: Selected same frequency - not moving GO");
9127                 return 0;
9128         }
9129
9130         conf = hostapd_config_defaults();
9131         if (!conf) {
9132                 wpa_dbg(wpa_s, MSG_DEBUG,
9133                         "P2P CSA: Failed to allocate default config");
9134                 return -1;
9135         }
9136
9137         current_ssid->frequency = params.freq;
9138         if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
9139                 wpa_dbg(wpa_s, MSG_DEBUG,
9140                         "P2P CSA: Failed to create new GO config");
9141                 ret = -1;
9142                 goto out;
9143         }
9144
9145         if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
9146                 wpa_dbg(wpa_s, MSG_DEBUG,
9147                         "P2P CSA: CSA to a different band is not supported");
9148                 ret = -1;
9149                 goto out;
9150         }
9151
9152         os_memset(&csa_settings, 0, sizeof(csa_settings));
9153         csa_settings.cs_count = P2P_GO_CSA_COUNT;
9154         csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
9155         csa_settings.freq_params.freq = params.freq;
9156         csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
9157         csa_settings.freq_params.ht_enabled = conf->ieee80211n;
9158         csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
9159
9160         if (conf->ieee80211ac) {
9161                 int freq1 = 0, freq2 = 0;
9162                 u8 chan, opclass;
9163
9164                 if (ieee80211_freq_to_channel_ext(params.freq,
9165                                                   conf->secondary_channel,
9166                                                   conf->vht_oper_chwidth,
9167                                                   &opclass, &chan) ==
9168                     NUM_HOSTAPD_MODES) {
9169                         wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
9170                         ret = -1;
9171                         goto out;
9172                 }
9173
9174                 if (conf->vht_oper_centr_freq_seg0_idx)
9175                         freq1 = ieee80211_chan_to_freq(
9176                                 NULL, opclass,
9177                                 conf->vht_oper_centr_freq_seg0_idx);
9178
9179                 if (conf->vht_oper_centr_freq_seg1_idx)
9180                         freq2 = ieee80211_chan_to_freq(
9181                                 NULL, opclass,
9182                                 conf->vht_oper_centr_freq_seg1_idx);
9183
9184                 if (freq1 < 0 || freq2 < 0) {
9185                         wpa_dbg(wpa_s, MSG_DEBUG,
9186                                 "P2P CSA: Selected invalid VHT center freqs");
9187                         ret = -1;
9188                         goto out;
9189                 }
9190
9191                 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
9192                 csa_settings.freq_params.center_freq1 = freq1;
9193                 csa_settings.freq_params.center_freq2 = freq2;
9194
9195                 switch (conf->vht_oper_chwidth) {
9196                 case VHT_CHANWIDTH_80MHZ:
9197                 case VHT_CHANWIDTH_80P80MHZ:
9198                         csa_settings.freq_params.bandwidth = 80;
9199                         break;
9200                 case VHT_CHANWIDTH_160MHZ:
9201                         csa_settings.freq_params.bandwidth = 160;
9202                         break;
9203                 }
9204         }
9205
9206         ret = ap_switch_channel(wpa_s, &csa_settings);
9207 out:
9208         current_ssid->frequency = old_freq;
9209         hostapd_config_free(conf);
9210         return ret;
9211 }
9212
9213
9214 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
9215 {
9216         struct p2p_go_neg_results params;
9217         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
9218
9219         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
9220
9221         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
9222                 current_ssid->frequency);
9223
9224         /* Stop the AP functionality */
9225         /* TODO: Should do this in a way that does not indicated to possible
9226          * P2P Clients in the group that the group is terminated. */
9227         wpa_supplicant_ap_deinit(wpa_s);
9228
9229         /* Reselect the GO frequency */
9230         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, 0, NULL)) {
9231                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
9232                 wpas_p2p_group_delete(wpa_s,
9233                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
9234                 return;
9235         }
9236         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
9237                 params.freq);
9238
9239         if (params.freq &&
9240             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
9241                 wpa_printf(MSG_DEBUG,
9242                            "P2P: Selected freq (%u MHz) is not valid for P2P",
9243                            params.freq);
9244                 wpas_p2p_group_delete(wpa_s,
9245                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
9246                 return;
9247         }
9248
9249         /* Update the frequency */
9250         current_ssid->frequency = params.freq;
9251         wpa_s->connect_without_scan = current_ssid;
9252         wpa_s->reassociate = 1;
9253         wpa_s->disconnected = 0;
9254         wpa_supplicant_req_scan(wpa_s, 0, 0);
9255 }
9256
9257
9258 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
9259 {
9260         struct wpa_supplicant *wpa_s = eloop_ctx;
9261
9262         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
9263                 return;
9264
9265         wpas_p2p_go_update_common_freqs(wpa_s);
9266
9267         /* Do not move GO in the middle of a CSA */
9268         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9269                 wpa_printf(MSG_DEBUG,
9270                            "P2P: CSA is in progress - not moving GO");
9271                 return;
9272         }
9273
9274         /*
9275          * First, try a channel switch flow. If it is not supported or fails,
9276          * take down the GO and bring it up again.
9277          */
9278         if (wpas_p2p_move_go_csa(wpa_s) < 0)
9279                 wpas_p2p_move_go_no_csa(wpa_s);
9280 }
9281
9282
9283 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
9284 {
9285         struct wpa_supplicant *wpa_s = eloop_ctx;
9286         struct wpa_used_freq_data *freqs = NULL;
9287         unsigned int num = wpa_s->num_multichan_concurrent;
9288
9289         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
9290         if (!freqs)
9291                 return;
9292
9293         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
9294
9295         /* Previous attempt to move a GO was not possible -- try again. */
9296         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
9297                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
9298
9299         os_free(freqs);
9300 }
9301
9302
9303 /*
9304  * Consider moving a GO from its currently used frequency:
9305  * 1. It is possible that due to regulatory consideration the frequency
9306  *    can no longer be used and there is a need to evacuate the GO.
9307  * 2. It is possible that due to MCC considerations, it would be preferable
9308  *    to move the GO to a channel that is currently used by some other
9309  *    station interface.
9310  *
9311  * In case a frequency that became invalid is once again valid, cancel a
9312  * previously initiated GO frequency change.
9313  */
9314 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
9315                                             struct wpa_used_freq_data *freqs,
9316                                             unsigned int num)
9317 {
9318         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
9319         unsigned int timeout;
9320         int freq;
9321         int dfs_offload;
9322
9323         wpas_p2p_go_update_common_freqs(wpa_s);
9324
9325         freq = wpa_s->current_ssid->frequency;
9326         dfs_offload = (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
9327                 ieee80211_is_dfs(freq, wpa_s->hw.modes, wpa_s->hw.num_modes);
9328         for (i = 0, invalid_freq = 0; i < num; i++) {
9329                 if (freqs[i].freq == freq) {
9330                         flags = freqs[i].flags;
9331
9332                         /* The channel is invalid, must change it */
9333                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
9334                             !dfs_offload) {
9335                                 wpa_dbg(wpa_s, MSG_DEBUG,
9336                                         "P2P: Freq=%d MHz no longer valid for GO",
9337                                         freq);
9338                                 invalid_freq = 1;
9339                         }
9340                 } else if (freqs[i].flags == 0) {
9341                         /* Freq is not used by any other station interface */
9342                         continue;
9343                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
9344                                                freqs[i].freq) && !dfs_offload) {
9345                         /* Freq is not valid for P2P use cases */
9346                         continue;
9347                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9348                            P2P_GO_FREQ_MOVE_SCM) {
9349                         policy_move = 1;
9350                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9351                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
9352                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9353                         policy_move = 1;
9354                 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
9355                             P2P_GO_FREQ_MOVE_SCM_ECSA) &&
9356                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9357                         if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
9358                                 policy_move = 1;
9359                         } else if ((wpa_s->drv_flags &
9360                                     WPA_DRIVER_FLAGS_AP_CSA) &&
9361                                    wpas_p2p_go_clients_support_ecsa(wpa_s)) {
9362                                 u8 chan;
9363
9364                                 /*
9365                                  * We do not support CSA between bands, so move
9366                                  * GO only within the same band.
9367                                  */
9368                                 if (wpa_s->ap_iface->current_mode->mode ==
9369                                     ieee80211_freq_to_chan(freqs[i].freq,
9370                                                            &chan))
9371                                         policy_move = 1;
9372                         }
9373                 }
9374         }
9375
9376         wpa_dbg(wpa_s, MSG_DEBUG,
9377                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9378                 invalid_freq, policy_move, flags);
9379
9380         /*
9381          * The channel is valid, or we are going to have a policy move, so
9382          * cancel timeout.
9383          */
9384         if (!invalid_freq || policy_move) {
9385                 wpa_dbg(wpa_s, MSG_DEBUG,
9386                         "P2P: Cancel a GO move from freq=%d MHz", freq);
9387                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9388
9389                 if (wpas_p2p_in_progress(wpa_s)) {
9390                         wpa_dbg(wpa_s, MSG_DEBUG,
9391                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9392                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9393                                              wpa_s, NULL);
9394                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9395                                                wpas_p2p_reconsider_moving_go,
9396                                                wpa_s, NULL);
9397                         return;
9398                 }
9399         }
9400
9401         if (!invalid_freq && (!policy_move || flags != 0)) {
9402                 wpa_dbg(wpa_s, MSG_DEBUG,
9403                         "P2P: Not initiating a GO frequency change");
9404                 return;
9405         }
9406
9407         /*
9408          * Do not consider moving GO if it is in the middle of a CSA. When the
9409          * CSA is finished this flow should be retriggered.
9410          */
9411         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9412                 wpa_dbg(wpa_s, MSG_DEBUG,
9413                         "P2P: Not initiating a GO frequency change - CSA is in progress");
9414                 return;
9415         }
9416
9417         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9418                 timeout = P2P_GO_FREQ_CHANGE_TIME;
9419         else
9420                 timeout = 0;
9421
9422         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9423                 freq, timeout);
9424         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9425         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9426 }
9427
9428
9429 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9430                                          struct wpa_used_freq_data *freqs,
9431                                          unsigned int num,
9432                                          enum wpas_p2p_channel_update_trig trig)
9433 {
9434         struct wpa_supplicant *ifs;
9435
9436         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9437                              NULL);
9438
9439         /*
9440          * Travers all the radio interfaces, and for each GO interface, check
9441          * if there is a need to move the GO from the frequency it is using,
9442          * or in case the frequency is valid again, cancel the evacuation flow.
9443          */
9444         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9445                          radio_list) {
9446                 if (ifs->current_ssid == NULL ||
9447                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9448                         continue;
9449
9450                 /*
9451                  * The GO was just started or completed channel switch, no need
9452                  * to move it.
9453                  */
9454                 if (wpa_s == ifs &&
9455                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9456                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9457                         wpa_dbg(wpa_s, MSG_DEBUG,
9458                                 "P2P: GO move - schedule re-consideration");
9459                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9460                                                wpas_p2p_reconsider_moving_go,
9461                                                wpa_s, NULL);
9462                         continue;
9463                 }
9464
9465                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9466         }
9467 }
9468
9469
9470 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9471 {
9472         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9473                 return;
9474
9475         wpas_p2p_update_channel_list(wpa_s,
9476                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9477 }
9478
9479
9480 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9481 {
9482         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9483                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9484                         "the management interface is being removed");
9485                 wpas_p2p_deinit_global(wpa_s->global);
9486         }
9487 }
9488
9489
9490 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9491 {
9492         if (wpa_s->ap_iface->bss)
9493                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9494         wpas_p2p_group_deinit(wpa_s);
9495 }
9496
9497
9498 int wpas_p2p_lo_start(struct wpa_supplicant *wpa_s, unsigned int freq,
9499                       unsigned int period, unsigned int interval,
9500                       unsigned int count)
9501 {
9502         struct p2p_data *p2p = wpa_s->global->p2p;
9503         u8 *device_types;
9504         size_t dev_types_len;
9505         struct wpabuf *buf;
9506         int ret;
9507
9508         if (wpa_s->p2p_lo_started) {
9509                 wpa_dbg(wpa_s, MSG_DEBUG,
9510                         "P2P Listen offload is already started");
9511                 return 0;
9512         }
9513
9514         if (wpa_s->global->p2p == NULL ||
9515             !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_LISTEN_OFFLOAD)) {
9516                 wpa_printf(MSG_DEBUG, "P2P: Listen offload not supported");
9517                 return -1;
9518         }
9519
9520         if (!p2p_supported_freq(wpa_s->global->p2p, freq)) {
9521                 wpa_printf(MSG_ERROR, "P2P: Input channel not supported: %u",
9522                            freq);
9523                 return -1;
9524         }
9525
9526         /* Get device type */
9527         dev_types_len = (wpa_s->conf->num_sec_device_types + 1) *
9528                 WPS_DEV_TYPE_LEN;
9529         device_types = os_malloc(dev_types_len);
9530         if (!device_types)
9531                 return -1;
9532         os_memcpy(device_types, wpa_s->conf->device_type, WPS_DEV_TYPE_LEN);
9533         os_memcpy(&device_types[WPS_DEV_TYPE_LEN], wpa_s->conf->sec_device_type,
9534                   wpa_s->conf->num_sec_device_types * WPS_DEV_TYPE_LEN);
9535
9536         /* Get Probe Response IE(s) */
9537         buf = p2p_build_probe_resp_template(p2p, freq);
9538         if (!buf) {
9539                 os_free(device_types);
9540                 return -1;
9541         }
9542
9543         ret = wpa_drv_p2p_lo_start(wpa_s, freq, period, interval, count,
9544                                    device_types, dev_types_len,
9545                                    wpabuf_mhead_u8(buf), wpabuf_len(buf));
9546         if (ret < 0)
9547                 wpa_dbg(wpa_s, MSG_DEBUG,
9548                         "P2P: Failed to start P2P listen offload");
9549
9550         os_free(device_types);
9551         wpabuf_free(buf);
9552
9553         if (ret == 0) {
9554                 wpa_s->p2p_lo_started = 1;
9555
9556                 /* Stop current P2P listen if any */
9557                 wpas_stop_listen(wpa_s);
9558         }
9559
9560         return ret;
9561 }
9562
9563
9564 int wpas_p2p_lo_stop(struct wpa_supplicant *wpa_s)
9565 {
9566         int ret;
9567
9568         if (!wpa_s->p2p_lo_started)
9569                 return 0;
9570
9571         ret = wpa_drv_p2p_lo_stop(wpa_s);
9572         if (ret < 0)
9573                 wpa_dbg(wpa_s, MSG_DEBUG,
9574                         "P2P: Failed to stop P2P listen offload");
9575
9576         wpa_s->p2p_lo_started = 0;
9577         return ret;
9578 }