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  52  * it is currently using, but is no longer valid for P2P use cases.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  57  * Defines CSA parameters which are used when GO evacuates the no longer valid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 void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 128                                    const u8 *ssid, size_t ssid_len);
 129 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 130 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 131                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 132                          int auto_join, int freq,
 133                          const u8 *ssid, size_t ssid_len);
 134 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 135 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 136 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 137 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 138 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 139                                              void *timeout_ctx);
 140 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 141 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 142                                        int group_added);
 143 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 144 static void wpas_stop_listen(void *ctx);
 145 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
 146 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
 147 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 148                                         enum wpa_driver_if_type type);
 149 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
 150                                             int already_deleted);
 151 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
 152                                              struct wpa_used_freq_data *freqs,
 153                                              unsigned int num);
 154 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx);
 155 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq);
 156 static void
 157 wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
 158                              struct wpa_used_freq_data *freqs, unsigned int num,
 159                              enum wpas_p2p_channel_update_trig trig);
 160 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx);
 161
 162
 163 /*
 164  * Get the number of concurrent channels that the HW can operate, but that are
 165  * currently not in use by any of the wpa_supplicant interfaces.
 166  */
 167 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 168 {
 169         int *freqs;
 170         int num, unused;
 171
 172         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 173         if (!freqs)
 174                 return -1;
 175
 176         num = get_shared_radio_freqs(wpa_s, freqs,
 177                                      wpa_s->num_multichan_concurrent);
 178         os_free(freqs);
 179
 180         unused = wpa_s->num_multichan_concurrent - num;
 181         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 182         return unused;
 183 }
 184
 185
 186 /*
 187  * Get the frequencies that are currently in use by one or more of the virtual
 188  * interfaces, and that are also valid for P2P operation.
 189  */
 190 static unsigned int
 191 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 192                           struct wpa_used_freq_data *p2p_freqs,
 193                           unsigned int len)
 194 {
 195         struct wpa_used_freq_data *freqs;
 196         unsigned int num, i, j;
 197
 198         freqs = os_calloc(wpa_s->num_multichan_concurrent,
 199                           sizeof(struct wpa_used_freq_data));
 200         if (!freqs)
 201                 return 0;
 202
 203         num = get_shared_radio_freqs_data(wpa_s, freqs,
 204                                           wpa_s->num_multichan_concurrent);
 205
 206         os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
 207
 208         for (i = 0, j = 0; i < num && j < len; i++) {
 209                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
 210                         p2p_freqs[j++] = freqs[i];
 211         }
 212
 213         os_free(freqs);
 214
 215         dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
 216
 217         return j;
 218 }
 219
 220
 221 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 222                                              int freq)
 223 {
 224         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 225                 return;
 226
 227         /* Use the wpa_s used to control the P2P Device operation */
 228         wpa_s = wpa_s->global->p2p_init_wpa_s;
 229
 230         if (wpa_s->conf->p2p_ignore_shared_freq &&
 231             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 232             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 233                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 234                            freq);
 235                 freq = 0;
 236         }
 237         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 238 }
 239
 240
 241 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 242                                       struct wpa_scan_results *scan_res)
 243 {
 244         size_t i;
 245
 246         if (wpa_s->p2p_scan_work) {
 247                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 248                 wpa_s->p2p_scan_work = NULL;
 249                 radio_work_done(work);
 250         }
 251
 252         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 253                 return;
 254
 255         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 256                    (int) scan_res->num);
 257
 258         for (i = 0; i < scan_res->num; i++) {
 259                 struct wpa_scan_res *bss = scan_res->res[i];
 260                 struct os_reltime time_tmp_age, entry_ts;
 261                 const u8 *ies;
 262                 size_t ies_len;
 263
 264                 time_tmp_age.sec = bss->age / 1000;
 265                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 266                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 267
 268                 ies = (const u8 *) (bss + 1);
 269                 ies_len = bss->ie_len;
 270                 if (bss->beacon_ie_len > 0 &&
 271                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 272                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 273                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 274                                    MACSTR, MAC2STR(bss->bssid));
 275                         ies = ies + ies_len;
 276                         ies_len = bss->beacon_ie_len;
 277                 }
 278
 279
 280                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 281                                          bss->freq, &entry_ts, bss->level,
 282                                          ies, ies_len) > 0)
 283                         break;
 284         }
 285
 286         p2p_scan_res_handled(wpa_s->global->p2p);
 287 }
 288
 289
 290 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 291 {
 292         struct wpa_supplicant *wpa_s = work->wpa_s;
 293         struct wpa_driver_scan_params *params = work->ctx;
 294         int ret;
 295
 296         if (deinit) {
 297                 if (!work->started) {
 298                         wpa_scan_free_params(params);
 299                         return;
 300                 }
 301
 302                 wpa_s->p2p_scan_work = NULL;
 303                 return;
 304         }
 305
 306         ret = wpa_drv_scan(wpa_s, params);
 307         wpa_scan_free_params(params);
 308         work->ctx = NULL;
 309         if (ret) {
 310                 radio_work_done(work);
 311                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 312                 return;
 313         }
 314
 315         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 316         os_get_reltime(&wpa_s->scan_trigger_time);
 317         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 318         wpa_s->own_scan_requested = 1;
 319         wpa_s->p2p_scan_work = work;
 320 }
 321
 322
 323 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 324                                           int freq)
 325 {
 326         if (wpa_s->global->p2p_24ghz_social_channels &&
 327             (freq == 2412 || freq == 2437 || freq == 2462)) {
 328                 /*
 329                  * Search all social channels regardless of whether these have
 330                  * been disabled for P2P operating channel use to avoid missing
 331                  * peers.
 332                  */
 333                 return 1;
 334         }
 335         return p2p_supported_freq(wpa_s->global->p2p, freq);
 336 }
 337
 338
 339 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 340                          unsigned int num_req_dev_types,
 341                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 342 {
 343         struct wpa_supplicant *wpa_s = ctx;
 344         struct wpa_driver_scan_params *params = NULL;
 345         struct wpabuf *wps_ie, *ies;
 346         unsigned int num_channels = 0;
 347         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 348         size_t ielen;
 349         u8 *n, i;
 350
 351         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 352                 return -1;
 353
 354         if (wpa_s->p2p_scan_work) {
 355                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 356                 return -1;
 357         }
 358
 359         params = os_zalloc(sizeof(*params));
 360         if (params == NULL)
 361                 return -1;
 362
 363         /* P2P Wildcard SSID */
 364         params->num_ssids = 1;
 365         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 366         if (n == NULL)
 367                 goto fail;
 368         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 369         params->ssids[0].ssid = n;
 370         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 371
 372         wpa_s->wps->dev.p2p = 1;
 373         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 374                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 375                                         num_req_dev_types, req_dev_types);
 376         if (wps_ie == NULL)
 377                 goto fail;
 378
 379         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 380         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 381         if (ies == NULL) {
 382                 wpabuf_free(wps_ie);
 383                 goto fail;
 384         }
 385         wpabuf_put_buf(ies, wps_ie);
 386         wpabuf_free(wps_ie);
 387
 388         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 389
 390         params->p2p_probe = 1;
 391         n = os_malloc(wpabuf_len(ies));
 392         if (n == NULL) {
 393                 wpabuf_free(ies);
 394                 goto fail;
 395         }
 396         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 397         params->extra_ies = n;
 398         params->extra_ies_len = wpabuf_len(ies);
 399         wpabuf_free(ies);
 400
 401         switch (type) {
 402         case P2P_SCAN_SOCIAL:
 403                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 404                                           sizeof(int));
 405                 if (params->freqs == NULL)
 406                         goto fail;
 407                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 408                         if (wpas_p2p_search_social_channel(
 409                                     wpa_s, social_channels_freq[i]))
 410                                 params->freqs[num_channels++] =
 411                                         social_channels_freq[i];
 412                 }
 413                 params->freqs[num_channels++] = 0;
 414                 break;
 415         case P2P_SCAN_FULL:
 416                 break;
 417         case P2P_SCAN_SPECIFIC:
 418                 params->freqs = os_calloc(2, sizeof(int));
 419                 if (params->freqs == NULL)
 420                         goto fail;
 421                 params->freqs[0] = freq;
 422                 params->freqs[1] = 0;
 423                 break;
 424         case P2P_SCAN_SOCIAL_PLUS_ONE:
 425                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 426                                           sizeof(int));
 427                 if (params->freqs == NULL)
 428                         goto fail;
 429                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 430                         if (wpas_p2p_search_social_channel(
 431                                     wpa_s, social_channels_freq[i]))
 432                                 params->freqs[num_channels++] =
 433                                         social_channels_freq[i];
 434                 }
 435                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 436                         params->freqs[num_channels++] = freq;
 437                 params->freqs[num_channels++] = 0;
 438                 break;
 439         }
 440
 441         radio_remove_works(wpa_s, "p2p-scan", 0);
 442         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 443                            params) < 0)
 444                 goto fail;
 445         return 0;
 446
 447 fail:
 448         wpa_scan_free_params(params);
 449         return -1;
 450 }
 451
 452
 453 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 454 {
 455         switch (p2p_group_interface) {
 456         case P2P_GROUP_INTERFACE_PENDING:
 457                 return WPA_IF_P2P_GROUP;
 458         case P2P_GROUP_INTERFACE_GO:
 459                 return WPA_IF_P2P_GO;
 460         case P2P_GROUP_INTERFACE_CLIENT:
 461                 return WPA_IF_P2P_CLIENT;
 462         }
 463
 464         return WPA_IF_P2P_GROUP;
 465 }
 466
 467
 468 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 469                                                   const u8 *ssid,
 470                                                   size_t ssid_len, int *go)
 471 {
 472         struct wpa_ssid *s;
 473
 474         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 475                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 476                         if (s->disabled != 0 || !s->p2p_group ||
 477                             s->ssid_len != ssid_len ||
 478                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 479                                 continue;
 480                         if (s->mode == WPAS_MODE_P2P_GO &&
 481                             s != wpa_s->current_ssid)
 482                                 continue;
 483                         if (go)
 484                                 *go = s->mode == WPAS_MODE_P2P_GO;
 485                         return wpa_s;
 486                 }
 487         }
 488
 489         return NULL;
 490 }
 491
 492
 493 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 494 {
 495         struct wpa_supplicant *wpa_s = eloop_ctx;
 496         wpa_printf(MSG_DEBUG,
 497                    "P2P: Complete previously requested removal of %s",
 498                    wpa_s->ifname);
 499         wpas_p2p_disconnect(wpa_s);
 500 }
 501
 502
 503 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 504                                       struct wpa_supplicant *calling_wpa_s)
 505 {
 506         if (calling_wpa_s == wpa_s && wpa_s &&
 507             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 508                 /*
 509                  * The calling wpa_s instance is going to be removed. Do that
 510                  * from an eloop callback to keep the instance available until
 511                  * the caller has returned. This my be needed, e.g., to provide
 512                  * control interface responses on the per-interface socket.
 513                  */
 514                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 515                                            wpa_s, NULL) < 0)
 516                         return -1;
 517                 return 0;
 518         }
 519
 520         return wpas_p2p_disconnect(wpa_s);
 521 }
 522
 523
 524 /* Determine total number of clients in active groups where we are the GO */
 525 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 526 {
 527         unsigned int count = 0;
 528         struct wpa_ssid *s;
 529
 530         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 531                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 532                         wpa_printf(MSG_DEBUG,
 533                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 534                                    wpa_s, s, s->disabled, s->p2p_group,
 535                                    s->mode);
 536                         if (!s->disabled && s->p2p_group &&
 537                             s->mode == WPAS_MODE_P2P_GO) {
 538                                 count += p2p_get_group_num_members(
 539                                         wpa_s->p2p_group);
 540                         }
 541                 }
 542         }
 543
 544         return count;
 545 }
 546
 547
 548 static unsigned int p2p_is_active_persistent_group(struct wpa_supplicant *wpa_s)
 549 {
 550         return !wpa_s->p2p_mgmt && wpa_s->current_ssid &&
 551                 !wpa_s->current_ssid->disabled &&
 552                 wpa_s->current_ssid->p2p_group &&
 553                 wpa_s->current_ssid->p2p_persistent_group;
 554 }
 555
 556
 557 static unsigned int p2p_is_active_persistent_go(struct wpa_supplicant *wpa_s)
 558 {
 559         return p2p_is_active_persistent_group(wpa_s) &&
 560                 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO;
 561 }
 562
 563
 564 /* Find an interface for a P2P group where we are the GO */
 565 static struct wpa_supplicant *
 566 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 567 {
 568         struct wpa_supplicant *save = NULL;
 569
 570         if (!wpa_s)
 571                 return NULL;
 572
 573         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 574                 if (!p2p_is_active_persistent_go(wpa_s))
 575                         continue;
 576
 577                 /* Prefer a group with connected clients */
 578                 if (p2p_get_group_num_members(wpa_s->p2p_group))
 579                         return wpa_s;
 580                 save = wpa_s;
 581         }
 582
 583         /* No group with connected clients, so pick the one without (if any) */
 584         return save;
 585 }
 586
 587
 588 static unsigned int p2p_is_active_persistent_cli(struct wpa_supplicant *wpa_s)
 589 {
 590         return p2p_is_active_persistent_group(wpa_s) &&
 591                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
 592 }
 593
 594
 595 /* Find an interface for a P2P group where we are the P2P Client */
 596 static struct wpa_supplicant *
 597 wpas_p2p_get_cli_group(struct wpa_supplicant *wpa_s)
 598 {
 599         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 600                 if (p2p_is_active_persistent_cli(wpa_s))
 601                         return wpa_s;
 602         }
 603
 604         return NULL;
 605 }
 606
 607
 608 /* Find an active P2P group where we are the GO */
 609 static struct wpa_ssid * wpas_p2p_group_go_ssid(struct wpa_supplicant *wpa_s,
 610                                                 u8 *bssid)
 611 {
 612         struct wpa_supplicant *go = wpas_p2p_get_go_group(wpa_s);
 613
 614         if (!go)
 615                 return NULL;
 616
 617         os_memcpy(bssid, go->own_addr, ETH_ALEN);
 618         return go->current_ssid;
 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 {
 639         struct wpa_supplicant *wpa_s = ctx;
 640         struct wpa_ssid *s;
 641         u8 conncap = P2PS_SETUP_NONE;
 642         unsigned int owned_members = 0;
 643         struct wpa_supplicant *go_wpa_s, *cli_wpa_s;
 644         struct wpa_ssid *persistent_go;
 645         int p2p_no_group_iface;
 646
 647         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 648
 649         /*
 650          * For non-concurrent capable devices:
 651          * If persistent_go, then no new.
 652          * If GO, then no client.
 653          * If client, then no GO.
 654          */
 655         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 656         if (go_wpa_s)
 657                 owned_members = p2p_get_group_num_members(go_wpa_s->p2p_group);
 658         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 659         p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s);
 660         cli_wpa_s = wpas_p2p_get_cli_group(wpa_s);
 661
 662         wpa_printf(MSG_DEBUG,
 663                    "P2P: GO(iface)=%p members=%u CLI(iface)=%p persistent(ssid)=%p",
 664                    go_wpa_s, owned_members, cli_wpa_s, persistent_go);
 665
 666         /* If not concurrent, restrict our choices */
 667         if (p2p_no_group_iface) {
 668                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 669
 670                 if (cli_wpa_s)
 671                         return P2PS_SETUP_NONE;
 672
 673                 if (go_wpa_s) {
 674                         if (role == P2PS_SETUP_CLIENT ||
 675                             incoming == P2PS_SETUP_GROUP_OWNER ||
 676                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 677                                 return P2PS_SETUP_NONE;
 678
 679                         return P2PS_SETUP_GROUP_OWNER;
 680                 }
 681
 682                 if (persistent_go) {
 683                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 684                                 if (!incoming)
 685                                         return P2PS_SETUP_GROUP_OWNER |
 686                                                 P2PS_SETUP_CLIENT;
 687                                 if (incoming == P2PS_SETUP_NEW) {
 688                                         u8 r;
 689
 690                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 691                                             (r & 1))
 692                                                 return P2PS_SETUP_CLIENT;
 693                                         return P2PS_SETUP_GROUP_OWNER;
 694                                 }
 695                         }
 696                 }
 697         }
 698
 699         /* If a required role has been specified, handle it here */
 700         if (role && role != P2PS_SETUP_NEW) {
 701                 switch (incoming) {
 702                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 703                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 704                         /*
 705                          * Peer has an active GO, so if the role allows it and
 706                          * we do not have any active roles, become client.
 707                          */
 708                         if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s &&
 709                             !cli_wpa_s)
 710                                 return P2PS_SETUP_CLIENT;
 711
 712                         /* fall through */
 713
 714                 case P2PS_SETUP_NONE:
 715                 case P2PS_SETUP_NEW:
 716                         conncap = role;
 717                         goto grp_owner;
 718
 719                 case P2PS_SETUP_GROUP_OWNER:
 720                         /*
 721                          * Must be a complimentary role - cannot be a client to
 722                          * more than one peer.
 723                          */
 724                         if (incoming == role || cli_wpa_s)
 725                                 return P2PS_SETUP_NONE;
 726
 727                         return P2PS_SETUP_CLIENT;
 728
 729                 case P2PS_SETUP_CLIENT:
 730                         /* Must be a complimentary role */
 731                         if (incoming != role) {
 732                                 conncap = P2PS_SETUP_GROUP_OWNER;
 733                                 goto grp_owner;
 734                         }
 735
 736                 default:
 737                         return P2PS_SETUP_NONE;
 738                 }
 739         }
 740
 741         /*
 742          * For now, we only will support ownership of one group, and being a
 743          * client of one group. Therefore, if we have either an existing GO
 744          * group, or an existing client group, we will not do a new GO
 745          * negotiation, but rather try to re-use the existing groups.
 746          */
 747         switch (incoming) {
 748         case P2PS_SETUP_NONE:
 749         case P2PS_SETUP_NEW:
 750                 if (cli_wpa_s)
 751                         conncap = P2PS_SETUP_GROUP_OWNER;
 752                 else if (!owned_members)
 753                         conncap = P2PS_SETUP_NEW;
 754                 else if (incoming == P2PS_SETUP_NONE)
 755                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 756                 else
 757                         conncap = P2PS_SETUP_CLIENT;
 758                 break;
 759
 760         case P2PS_SETUP_CLIENT:
 761                 conncap = P2PS_SETUP_GROUP_OWNER;
 762                 break;
 763
 764         case P2PS_SETUP_GROUP_OWNER:
 765                 if (!cli_wpa_s)
 766                         conncap = P2PS_SETUP_CLIENT;
 767                 break;
 768
 769         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 770         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 771                 /*
 772                  * Peer has an active GO, so if the role allows it and
 773                  * we do not have any active roles, become client.
 774                  */
 775                 if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s && !cli_wpa_s)
 776                         return P2PS_SETUP_CLIENT;
 777
 778                 if (cli_wpa_s)
 779                         conncap = P2PS_SETUP_GROUP_OWNER;
 780                 else {
 781                         u8 r;
 782
 783                         if (os_get_random(&r, sizeof(r)) < 0 ||
 784                             (r & 1))
 785                                 conncap = P2PS_SETUP_CLIENT;
 786                         else
 787                                 conncap = P2PS_SETUP_GROUP_OWNER;
 788                 }
 789                 break;
 790
 791         default:
 792                 return P2PS_SETUP_NONE;
 793         }
 794
 795 grp_owner:
 796         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 797             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 798                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 799                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 800
 801                 s = wpas_p2p_get_persistent_go(wpa_s);
 802                 if (!s && !go_wpa_s && p2p_no_group_iface) {
 803                         p2p_set_intended_addr(wpa_s->global->p2p,
 804                                               wpa_s->own_addr);
 805                 } else if (!s && !go_wpa_s) {
 806                         if (wpas_p2p_add_group_interface(wpa_s,
 807                                                          WPA_IF_P2P_GO) < 0) {
 808                                 wpa_printf(MSG_ERROR,
 809                                            "P2P: Failed to allocate a new interface for the group");
 810                                 return P2PS_SETUP_NONE;
 811                         }
 812                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 813                         p2p_set_intended_addr(wpa_s->global->p2p,
 814                                               wpa_s->pending_interface_addr);
 815                 }
 816         }
 817
 818         return conncap;
 819 }
 820
 821
 822 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 823                                  enum p2p_group_removal_reason removal_reason)
 824 {
 825         struct wpa_ssid *ssid;
 826         char *gtype;
 827         const char *reason;
 828
 829         ssid = wpa_s->current_ssid;
 830         if (ssid == NULL) {
 831                 /*
 832                  * The current SSID was not known, but there may still be a
 833                  * pending P2P group interface waiting for provisioning or a
 834                  * P2P group that is trying to reconnect.
 835                  */
 836                 ssid = wpa_s->conf->ssid;
 837                 while (ssid) {
 838                         if (ssid->p2p_group && ssid->disabled != 2)
 839                                 break;
 840                         ssid = ssid->next;
 841                 }
 842                 if (ssid == NULL &&
 843                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 844                 {
 845                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 846                                    "not found");
 847                         return -1;
 848                 }
 849         }
 850         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 851                 gtype = "GO";
 852         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 853                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 854                 wpa_s->reassociate = 0;
 855                 wpa_s->disconnected = 1;
 856                 gtype = "client";
 857         } else
 858                 gtype = "GO";
 859
 860         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 861                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 862
 863         if (os_strcmp(gtype, "client") == 0) {
 864                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 865                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 866                                                 wpa_s, NULL)) {
 867                         wpa_printf(MSG_DEBUG,
 868                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 869                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 870                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 871                                              wpa_s, NULL);
 872                 }
 873         }
 874
 875         if (wpa_s->cross_connect_in_use) {
 876                 wpa_s->cross_connect_in_use = 0;
 877                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 878                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 879                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 880         }
 881         switch (removal_reason) {
 882         case P2P_GROUP_REMOVAL_REQUESTED:
 883                 reason = " reason=REQUESTED";
 884                 break;
 885         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 886                 reason = " reason=FORMATION_FAILED";
 887                 break;
 888         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 889                 reason = " reason=IDLE";
 890                 break;
 891         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 892                 reason = " reason=UNAVAILABLE";
 893                 break;
 894         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 895                 reason = " reason=GO_ENDING_SESSION";
 896                 break;
 897         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 898                 reason = " reason=PSK_FAILURE";
 899                 break;
 900         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 901                 reason = " reason=FREQ_CONFLICT";
 902                 break;
 903         default:
 904                 reason = "";
 905                 break;
 906         }
 907         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 908                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 909                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 910                                wpa_s->ifname, gtype, reason);
 911         }
 912
 913         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 914                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 915         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 916                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 917         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 918                                  wpa_s->parent, NULL) > 0) {
 919                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 920                            "timeout");
 921                 wpa_s->p2p_in_provisioning = 0;
 922                 wpas_p2p_group_formation_failed(wpa_s, 1);
 923         }
 924
 925         wpa_s->p2p_in_invitation = 0;
 926         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
 927         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
 928
 929         /*
 930          * Make sure wait for the first client does not remain active after the
 931          * group has been removed.
 932          */
 933         wpa_s->global->p2p_go_wait_client.sec = 0;
 934
 935         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 936                 struct wpa_global *global;
 937                 char *ifname;
 938                 enum wpa_driver_if_type type;
 939                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 940                         wpa_s->ifname);
 941                 global = wpa_s->global;
 942                 ifname = os_strdup(wpa_s->ifname);
 943                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 944                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 945                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 946                 wpa_s = global->ifaces;
 947                 if (wpa_s && ifname)
 948                         wpa_drv_if_remove(wpa_s, type, ifname);
 949                 os_free(ifname);
 950                 return 1;
 951         }
 952
 953         if (!wpa_s->p2p_go_group_formation_completed) {
 954                 wpa_s->global->p2p_group_formation = NULL;
 955                 wpa_s->p2p_in_provisioning = 0;
 956         }
 957
 958         wpa_s->show_group_started = 0;
 959         os_free(wpa_s->go_params);
 960         wpa_s->go_params = NULL;
 961
 962         os_free(wpa_s->p2p_group_common_freqs);
 963         wpa_s->p2p_group_common_freqs = NULL;
 964         wpa_s->p2p_group_common_freqs_num = 0;
 965
 966         wpa_s->waiting_presence_resp = 0;
 967
 968         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 969         if (ssid && (ssid->p2p_group ||
 970                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 971                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 972                 int id = ssid->id;
 973                 if (ssid == wpa_s->current_ssid) {
 974                         wpa_sm_set_config(wpa_s->wpa, NULL);
 975                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 976                         wpa_s->current_ssid = NULL;
 977                 }
 978                 /*
 979                  * Networks objects created during any P2P activities are not
 980                  * exposed out as they might/will confuse certain non-P2P aware
 981                  * applications since these network objects won't behave like
 982                  * regular ones.
 983                  *
 984                  * Likewise, we don't send out network removed signals for such
 985                  * network objects.
 986                  */
 987                 wpa_config_remove_network(wpa_s->conf, id);
 988                 wpa_supplicant_clear_status(wpa_s);
 989                 wpa_supplicant_cancel_sched_scan(wpa_s);
 990         } else {
 991                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 992                            "found");
 993         }
 994         if (wpa_s->ap_iface)
 995                 wpa_supplicant_ap_deinit(wpa_s);
 996         else
 997                 wpa_drv_deinit_p2p_cli(wpa_s);
 998
 999         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1000
1001         return 0;
1002 }
1003
1004
1005 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
1006                                      u8 *go_dev_addr,
1007                                      const u8 *ssid, size_t ssid_len)
1008 {
1009         struct wpa_bss *bss;
1010         const u8 *bssid;
1011         struct wpabuf *p2p;
1012         u8 group_capab;
1013         const u8 *addr;
1014
1015         if (wpa_s->go_params)
1016                 bssid = wpa_s->go_params->peer_interface_addr;
1017         else
1018                 bssid = wpa_s->bssid;
1019
1020         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
1021         if (bss == NULL && wpa_s->go_params &&
1022             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
1023                 bss = wpa_bss_get_p2p_dev_addr(
1024                         wpa_s, wpa_s->go_params->peer_device_addr);
1025         if (bss == NULL) {
1026                 u8 iface_addr[ETH_ALEN];
1027                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1028                                            iface_addr) == 0)
1029                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1030         }
1031         if (bss == NULL) {
1032                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1033                            "group is persistent - BSS " MACSTR " not found",
1034                            MAC2STR(bssid));
1035                 return 0;
1036         }
1037
1038         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1039         if (p2p == NULL)
1040                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1041                                                          P2P_IE_VENDOR_TYPE);
1042         if (p2p == NULL) {
1043                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1044                            "group is persistent - BSS " MACSTR
1045                            " did not include P2P IE", MAC2STR(bssid));
1046                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1047                             (u8 *) (bss + 1), bss->ie_len);
1048                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1049                             ((u8 *) bss + 1) + bss->ie_len,
1050                             bss->beacon_ie_len);
1051                 return 0;
1052         }
1053
1054         group_capab = p2p_get_group_capab(p2p);
1055         addr = p2p_get_go_dev_addr(p2p);
1056         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1057                    "group_capab=0x%x", group_capab);
1058         if (addr) {
1059                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1060                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1061                            MAC2STR(addr));
1062         } else
1063                 os_memset(go_dev_addr, 0, ETH_ALEN);
1064         wpabuf_free(p2p);
1065
1066         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1067                    "go_dev_addr=" MACSTR,
1068                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1069
1070         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1071 }
1072
1073
1074 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1075                                            struct wpa_ssid *ssid,
1076                                            const u8 *go_dev_addr)
1077 {
1078         struct wpa_ssid *s;
1079         int changed = 0;
1080
1081         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1082                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1083         for (s = wpa_s->conf->ssid; s; s = s->next) {
1084                 if (s->disabled == 2 &&
1085                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1086                     s->ssid_len == ssid->ssid_len &&
1087                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1088                         break;
1089         }
1090
1091         if (s) {
1092                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1093                            "entry");
1094                 if (ssid->passphrase && !s->passphrase)
1095                         changed = 1;
1096                 else if (ssid->passphrase && s->passphrase &&
1097                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1098                         changed = 1;
1099         } else {
1100                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1101                            "entry");
1102                 changed = 1;
1103                 s = wpa_config_add_network(wpa_s->conf);
1104                 if (s == NULL)
1105                         return -1;
1106
1107                 /*
1108                  * Instead of network_added we emit persistent_group_added
1109                  * notification. Also to keep the defense checks in
1110                  * persistent_group obj registration method, we set the
1111                  * relevant flags in s to designate it as a persistent group.
1112                  */
1113                 s->p2p_group = 1;
1114                 s->p2p_persistent_group = 1;
1115                 wpas_notify_persistent_group_added(wpa_s, s);
1116                 wpa_config_set_network_defaults(s);
1117         }
1118
1119         s->p2p_group = 1;
1120         s->p2p_persistent_group = 1;
1121         s->disabled = 2;
1122         s->bssid_set = 1;
1123         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1124         s->mode = ssid->mode;
1125         s->auth_alg = WPA_AUTH_ALG_OPEN;
1126         s->key_mgmt = WPA_KEY_MGMT_PSK;
1127         s->proto = WPA_PROTO_RSN;
1128         s->pairwise_cipher = WPA_CIPHER_CCMP;
1129         s->export_keys = 1;
1130         if (ssid->passphrase) {
1131                 os_free(s->passphrase);
1132                 s->passphrase = os_strdup(ssid->passphrase);
1133         }
1134         if (ssid->psk_set) {
1135                 s->psk_set = 1;
1136                 os_memcpy(s->psk, ssid->psk, 32);
1137         }
1138         if (s->passphrase && !s->psk_set)
1139                 wpa_config_update_psk(s);
1140         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1141                 os_free(s->ssid);
1142                 s->ssid = os_malloc(ssid->ssid_len);
1143         }
1144         if (s->ssid) {
1145                 s->ssid_len = ssid->ssid_len;
1146                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1147         }
1148         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1149                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1150                 wpa_s->global->add_psk = NULL;
1151                 changed = 1;
1152         }
1153
1154         if (changed && wpa_s->conf->update_config &&
1155             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1156                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1157         }
1158
1159         return s->id;
1160 }
1161
1162
1163 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1164                                                  const u8 *addr)
1165 {
1166         struct wpa_ssid *ssid, *s;
1167         u8 *n;
1168         size_t i;
1169         int found = 0;
1170         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1171
1172         ssid = wpa_s->current_ssid;
1173         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1174             !ssid->p2p_persistent_group)
1175                 return;
1176
1177         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1178                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1179                         continue;
1180
1181                 if (s->ssid_len == ssid->ssid_len &&
1182                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1183                         break;
1184         }
1185
1186         if (s == NULL)
1187                 return;
1188
1189         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1190                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1191                               ETH_ALEN) != 0)
1192                         continue;
1193
1194                 if (i == s->num_p2p_clients - 1)
1195                         return; /* already the most recent entry */
1196
1197                 /* move the entry to mark it most recent */
1198                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1199                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1200                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1201                 os_memcpy(s->p2p_client_list +
1202                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1203                           ETH_ALEN);
1204                 os_memset(s->p2p_client_list +
1205                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1206                           0xff, ETH_ALEN);
1207                 found = 1;
1208                 break;
1209         }
1210
1211         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1212                 n = os_realloc_array(s->p2p_client_list,
1213                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1214                 if (n == NULL)
1215                         return;
1216                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1217                           ETH_ALEN);
1218                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1219                           0xff, ETH_ALEN);
1220                 s->p2p_client_list = n;
1221                 s->num_p2p_clients++;
1222         } else if (!found && s->p2p_client_list) {
1223                 /* Not enough room for an additional entry - drop the oldest
1224                  * entry */
1225                 os_memmove(s->p2p_client_list,
1226                            s->p2p_client_list + 2 * ETH_ALEN,
1227                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1228                 os_memcpy(s->p2p_client_list +
1229                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1230                           addr, ETH_ALEN);
1231                 os_memset(s->p2p_client_list +
1232                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1233                           0xff, ETH_ALEN);
1234         }
1235
1236         if (p2p_wpa_s->conf->update_config &&
1237             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1238                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1239 }
1240
1241
1242 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1243                                    int go, struct wpa_ssid *ssid, int freq,
1244                                    const u8 *psk, const char *passphrase,
1245                                    const u8 *go_dev_addr, int persistent,
1246                                    const char *extra)
1247 {
1248         const char *ssid_txt;
1249         char psk_txt[65];
1250
1251         if (psk)
1252                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1253         else
1254                 psk_txt[0] = '\0';
1255
1256         if (ssid)
1257                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1258         else
1259                 ssid_txt = "";
1260
1261         if (passphrase && passphrase[0] == '\0')
1262                 passphrase = NULL;
1263
1264         /*
1265          * Include PSK/passphrase only in the control interface message and
1266          * leave it out from the debug log entry.
1267          */
1268         wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
1269                             P2P_EVENT_GROUP_STARTED
1270                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1271                             MACSTR "%s%s",
1272                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1273                             psk ? " psk=" : "", psk_txt,
1274                             passphrase ? " passphrase=\"" : "",
1275                             passphrase ? passphrase : "",
1276                             passphrase ? "\"" : "",
1277                             MAC2STR(go_dev_addr),
1278                             persistent ? " [PERSISTENT]" : "", extra);
1279         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1280                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1281                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1282                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1283                    extra);
1284 }
1285
1286
1287 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1288                                            int success, int already_deleted)
1289 {
1290         struct wpa_ssid *ssid;
1291         int client;
1292         int persistent;
1293         u8 go_dev_addr[ETH_ALEN];
1294         int network_id = -1;
1295
1296         /*
1297          * This callback is likely called for the main interface. Update wpa_s
1298          * to use the group interface if a new interface was created for the
1299          * group.
1300          */
1301         if (wpa_s->global->p2p_group_formation)
1302                 wpa_s = wpa_s->global->p2p_group_formation;
1303         if (wpa_s->p2p_go_group_formation_completed) {
1304                 wpa_s->global->p2p_group_formation = NULL;
1305                 wpa_s->p2p_in_provisioning = 0;
1306         }
1307         wpa_s->p2p_in_invitation = 0;
1308         wpa_s->group_formation_reported = 1;
1309
1310         if (!success) {
1311                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1312                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1313                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1314                 if (already_deleted)
1315                         return;
1316                 wpas_p2p_group_delete(wpa_s,
1317                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1318                 return;
1319         }
1320
1321         wpa_msg_global(wpa_s->parent, MSG_INFO,
1322                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1323
1324         ssid = wpa_s->current_ssid;
1325         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1326                 ssid->mode = WPAS_MODE_P2P_GO;
1327                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1328                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1329         }
1330
1331         persistent = 0;
1332         if (ssid) {
1333                 client = ssid->mode == WPAS_MODE_INFRA;
1334                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1335                         persistent = ssid->p2p_persistent_group;
1336                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1337                                   ETH_ALEN);
1338                 } else
1339                         persistent = wpas_p2p_persistent_group(wpa_s,
1340                                                                go_dev_addr,
1341                                                                ssid->ssid,
1342                                                                ssid->ssid_len);
1343         } else {
1344                 client = wpa_s->p2p_group_interface ==
1345                         P2P_GROUP_INTERFACE_CLIENT;
1346                 os_memset(go_dev_addr, 0, ETH_ALEN);
1347         }
1348
1349         wpa_s->show_group_started = 0;
1350         if (client) {
1351                 /*
1352                  * Indicate event only after successfully completed 4-way
1353                  * handshake, i.e., when the interface is ready for data
1354                  * packets.
1355                  */
1356                 wpa_s->show_group_started = 1;
1357         } else {
1358                 wpas_p2p_group_started(wpa_s, 1, ssid,
1359                                        ssid ? ssid->frequency : 0,
1360                                        ssid && ssid->passphrase == NULL &&
1361                                        ssid->psk_set ? ssid->psk : NULL,
1362                                        ssid ? ssid->passphrase : NULL,
1363                                        go_dev_addr, persistent, "");
1364                 wpas_p2p_cross_connect_setup(wpa_s);
1365                 wpas_p2p_set_group_idle_timeout(wpa_s);
1366         }
1367
1368         if (persistent)
1369                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
1370                                                              ssid, go_dev_addr);
1371         else {
1372                 os_free(wpa_s->global->add_psk);
1373                 wpa_s->global->add_psk = NULL;
1374         }
1375         if (network_id < 0 && ssid)
1376                 network_id = ssid->id;
1377         if (!client) {
1378                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1379                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1380         }
1381 }
1382
1383
1384 struct send_action_work {
1385         unsigned int freq;
1386         u8 dst[ETH_ALEN];
1387         u8 src[ETH_ALEN];
1388         u8 bssid[ETH_ALEN];
1389         size_t len;
1390         unsigned int wait_time;
1391         u8 buf[0];
1392 };
1393
1394
1395 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1396                                               void *timeout_ctx)
1397 {
1398         struct wpa_supplicant *wpa_s = eloop_ctx;
1399
1400         if (!wpa_s->p2p_send_action_work)
1401                 return;
1402
1403         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1404         os_free(wpa_s->p2p_send_action_work->ctx);
1405         radio_work_done(wpa_s->p2p_send_action_work);
1406         wpa_s->p2p_send_action_work = NULL;
1407 }
1408
1409
1410 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1411 {
1412         if (wpa_s->p2p_send_action_work) {
1413                 struct send_action_work *awork;
1414                 awork = wpa_s->p2p_send_action_work->ctx;
1415                 if (awork->wait_time == 0) {
1416                         os_free(awork);
1417                         radio_work_done(wpa_s->p2p_send_action_work);
1418                         wpa_s->p2p_send_action_work = NULL;
1419                 } else {
1420                         /*
1421                          * In theory, this should not be needed, but number of
1422                          * places in the P2P code is still using non-zero wait
1423                          * time for the last Action frame in the sequence and
1424                          * some of these do not call send_action_done().
1425                          */
1426                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1427                                              wpa_s, NULL);
1428                         eloop_register_timeout(
1429                                 0, awork->wait_time * 1000,
1430                                 wpas_p2p_send_action_work_timeout,
1431                                 wpa_s, NULL);
1432                 }
1433         }
1434 }
1435
1436
1437 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1438                                            unsigned int freq,
1439                                            const u8 *dst, const u8 *src,
1440                                            const u8 *bssid,
1441                                            const u8 *data, size_t data_len,
1442                                            enum offchannel_send_action_result
1443                                            result)
1444 {
1445         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1446
1447         wpas_p2p_action_tx_clear(wpa_s);
1448
1449         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1450                 return;
1451
1452         switch (result) {
1453         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1454                 res = P2P_SEND_ACTION_SUCCESS;
1455                 break;
1456         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1457                 res = P2P_SEND_ACTION_NO_ACK;
1458                 break;
1459         case OFFCHANNEL_SEND_ACTION_FAILED:
1460                 res = P2P_SEND_ACTION_FAILED;
1461                 break;
1462         }
1463
1464         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1465
1466         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1467             wpa_s->pending_pd_before_join &&
1468             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1469              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1470             wpa_s->p2p_fallback_to_go_neg) {
1471                 wpa_s->pending_pd_before_join = 0;
1472                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1473                         "during p2p_connect-auto");
1474                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1475                                P2P_EVENT_FALLBACK_TO_GO_NEG
1476                                "reason=no-ACK-to-PD-Req");
1477                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1478                 return;
1479         }
1480 }
1481
1482
1483 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1484 {
1485         struct wpa_supplicant *wpa_s = work->wpa_s;
1486         struct send_action_work *awork = work->ctx;
1487
1488         if (deinit) {
1489                 if (work->started) {
1490                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1491                                              wpa_s, NULL);
1492                         wpa_s->p2p_send_action_work = NULL;
1493                         offchannel_send_action_done(wpa_s);
1494                 }
1495                 os_free(awork);
1496                 return;
1497         }
1498
1499         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1500                                    awork->bssid, awork->buf, awork->len,
1501                                    awork->wait_time,
1502                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1503                 os_free(awork);
1504                 radio_work_done(work);
1505                 return;
1506         }
1507         wpa_s->p2p_send_action_work = work;
1508 }
1509
1510
1511 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1512                                  unsigned int freq, const u8 *dst,
1513                                  const u8 *src, const u8 *bssid, const u8 *buf,
1514                                  size_t len, unsigned int wait_time)
1515 {
1516         struct send_action_work *awork;
1517
1518         if (wpa_s->p2p_send_action_work) {
1519                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1520                 return -1;
1521         }
1522
1523         awork = os_zalloc(sizeof(*awork) + len);
1524         if (awork == NULL)
1525                 return -1;
1526
1527         awork->freq = freq;
1528         os_memcpy(awork->dst, dst, ETH_ALEN);
1529         os_memcpy(awork->src, src, ETH_ALEN);
1530         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1531         awork->len = len;
1532         awork->wait_time = wait_time;
1533         os_memcpy(awork->buf, buf, len);
1534
1535         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1536                            wpas_send_action_cb, awork) < 0) {
1537                 os_free(awork);
1538                 return -1;
1539         }
1540
1541         return 0;
1542 }
1543
1544
1545 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1546                             const u8 *src, const u8 *bssid, const u8 *buf,
1547                             size_t len, unsigned int wait_time)
1548 {
1549         struct wpa_supplicant *wpa_s = ctx;
1550         int listen_freq = -1, send_freq = -1;
1551
1552         if (wpa_s->p2p_listen_work)
1553                 listen_freq = wpa_s->p2p_listen_work->freq;
1554         if (wpa_s->p2p_send_action_work)
1555                 send_freq = wpa_s->p2p_send_action_work->freq;
1556         if (listen_freq != (int) freq && send_freq != (int) freq) {
1557                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1558                            listen_freq, send_freq);
1559                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1560                                              len, wait_time);
1561         }
1562
1563         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1564         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1565                                       wait_time,
1566                                       wpas_p2p_send_action_tx_status, 1);
1567 }
1568
1569
1570 static void wpas_send_action_done(void *ctx)
1571 {
1572         struct wpa_supplicant *wpa_s = ctx;
1573
1574         if (wpa_s->p2p_send_action_work) {
1575                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1576                                      wpa_s, NULL);
1577                 os_free(wpa_s->p2p_send_action_work->ctx);
1578                 radio_work_done(wpa_s->p2p_send_action_work);
1579                 wpa_s->p2p_send_action_work = NULL;
1580         }
1581
1582         offchannel_send_action_done(wpa_s);
1583 }
1584
1585
1586 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1587                                     struct p2p_go_neg_results *params)
1588 {
1589         if (wpa_s->go_params == NULL) {
1590                 wpa_s->go_params = os_malloc(sizeof(*params));
1591                 if (wpa_s->go_params == NULL)
1592                         return -1;
1593         }
1594         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1595         return 0;
1596 }
1597
1598
1599 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1600                                     struct p2p_go_neg_results *res)
1601 {
1602         wpa_s->group_formation_reported = 0;
1603         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1604                    " dev_addr " MACSTR " wps_method %d",
1605                    MAC2STR(res->peer_interface_addr),
1606                    MAC2STR(res->peer_device_addr), res->wps_method);
1607         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1608                           res->ssid, res->ssid_len);
1609         wpa_supplicant_ap_deinit(wpa_s);
1610         wpas_copy_go_neg_results(wpa_s, res);
1611         if (res->wps_method == WPS_PBC) {
1612                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1613 #ifdef CONFIG_WPS_NFC
1614         } else if (res->wps_method == WPS_NFC) {
1615                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1616                                    res->peer_interface_addr,
1617                                    wpa_s->parent->p2p_oob_dev_pw,
1618                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1619                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1620                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1621                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1622                                    NULL,
1623                                    NULL, 0, 0);
1624 #endif /* CONFIG_WPS_NFC */
1625         } else {
1626                 u16 dev_pw_id = DEV_PW_DEFAULT;
1627                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1628                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1629                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1630                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1631                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1632                                    wpa_s->p2p_pin, 1, dev_pw_id);
1633         }
1634 }
1635
1636
1637 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1638                                   struct wpa_ssid *ssid)
1639 {
1640         struct wpa_ssid *persistent;
1641         struct psk_list_entry *psk;
1642         struct hostapd_data *hapd;
1643
1644         if (!wpa_s->ap_iface)
1645                 return;
1646
1647         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1648                                              ssid->ssid_len);
1649         if (persistent == NULL)
1650                 return;
1651
1652         hapd = wpa_s->ap_iface->bss[0];
1653
1654         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1655                          list) {
1656                 struct hostapd_wpa_psk *hpsk;
1657
1658                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1659                         MACSTR " psk=%d",
1660                         MAC2STR(psk->addr), psk->p2p);
1661                 hpsk = os_zalloc(sizeof(*hpsk));
1662                 if (hpsk == NULL)
1663                         break;
1664                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1665                 if (psk->p2p)
1666                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1667                 else
1668                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1669                 hpsk->next = hapd->conf->ssid.wpa_psk;
1670                 hapd->conf->ssid.wpa_psk = hpsk;
1671         }
1672 }
1673
1674
1675 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1676 {
1677         unsigned int i;
1678
1679         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1680                 wpa_s->p2p_group_common_freqs_num);
1681
1682         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1683                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1684                         i, wpa_s->p2p_group_common_freqs[i]);
1685 }
1686
1687
1688 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1689                                            struct p2p_go_neg_results *params)
1690 {
1691         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1692
1693         wpa_s->p2p_group_common_freqs_num = 0;
1694         os_free(wpa_s->p2p_group_common_freqs);
1695         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1696         if (!wpa_s->p2p_group_common_freqs)
1697                 return;
1698
1699         for (i = 0; i < len; i++) {
1700                 if (!wpa_s->go_params->freq_list[i])
1701                         break;
1702                 wpa_s->p2p_group_common_freqs[i] =
1703                         wpa_s->go_params->freq_list[i];
1704         }
1705         wpa_s->p2p_group_common_freqs_num = i;
1706 }
1707
1708
1709 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1710 {
1711 #ifndef CONFIG_NO_CONFIG_WRITE
1712         if (wpa_s->parent->conf->update_config &&
1713             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1714                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1715 #endif /* CONFIG_NO_CONFIG_WRITE */
1716 }
1717
1718
1719 static void p2p_go_configured(void *ctx, void *data)
1720 {
1721         struct wpa_supplicant *wpa_s = ctx;
1722         struct p2p_go_neg_results *params = data;
1723         struct wpa_ssid *ssid;
1724         int network_id = -1;
1725
1726         p2p_go_save_group_common_freqs(wpa_s, params);
1727         p2p_go_dump_common_freqs(wpa_s);
1728
1729         ssid = wpa_s->current_ssid;
1730         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1731                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1732                 if (wpa_s->global->p2p_group_formation == wpa_s)
1733                         wpa_s->global->p2p_group_formation = NULL;
1734                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1735                                        params->passphrase[0] == '\0' ?
1736                                        params->psk : NULL,
1737                                        params->passphrase,
1738                                        wpa_s->global->p2p_dev_addr,
1739                                        params->persistent_group, "");
1740                 wpa_s->group_formation_reported = 1;
1741
1742                 if (wpa_s->parent->p2ps_method_config_any) {
1743                         if (is_zero_ether_addr(wpa_s->parent->p2ps_join_addr)) {
1744                                 wpa_dbg(wpa_s, MSG_DEBUG,
1745                                         "P2PS: Setting default PIN for ANY");
1746                                 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1747                                                           "12345670", NULL, 0,
1748                                                           0);
1749                         } else {
1750                                 wpa_dbg(wpa_s, MSG_DEBUG,
1751                                         "P2PS: Setting default PIN for " MACSTR,
1752                                         MAC2STR(wpa_s->parent->p2ps_join_addr));
1753                                 wpa_supplicant_ap_wps_pin(
1754                                         wpa_s, wpa_s->parent->p2ps_join_addr,
1755                                         "12345670", NULL, 0, 0);
1756                         }
1757                         wpa_s->parent->p2ps_method_config_any = 0;
1758                 }
1759
1760                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1761                 if (params->persistent_group) {
1762                         network_id = wpas_p2p_store_persistent_group(
1763                                 wpa_s->parent, ssid,
1764                                 wpa_s->global->p2p_dev_addr);
1765                         wpas_p2p_add_psk_list(wpa_s, ssid);
1766                 }
1767                 if (network_id < 0)
1768                         network_id = ssid->id;
1769                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1770                 wpas_p2p_cross_connect_setup(wpa_s);
1771                 wpas_p2p_set_group_idle_timeout(wpa_s);
1772
1773                 if (wpa_s->p2p_first_connection_timeout) {
1774                         wpa_dbg(wpa_s, MSG_DEBUG,
1775                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1776                                 wpa_s->p2p_first_connection_timeout);
1777                         wpa_s->p2p_go_group_formation_completed = 0;
1778                         wpa_s->global->p2p_group_formation = wpa_s;
1779                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1780                                              wpa_s->parent, NULL);
1781                         eloop_register_timeout(
1782                                 wpa_s->p2p_first_connection_timeout, 0,
1783                                 wpas_p2p_group_formation_timeout,
1784                                 wpa_s->parent, NULL);
1785                 }
1786
1787                 return;
1788         }
1789
1790         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1791         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1792                                               params->peer_interface_addr)) {
1793                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1794                            "filtering");
1795                 return;
1796         }
1797         if (params->wps_method == WPS_PBC) {
1798                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1799                                           params->peer_device_addr);
1800 #ifdef CONFIG_WPS_NFC
1801         } else if (params->wps_method == WPS_NFC) {
1802                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1803                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1804                     !wpa_s->parent->p2p_oob_dev_pw) {
1805                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1806                         return;
1807                 }
1808                 wpas_ap_wps_add_nfc_pw(
1809                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1810                         wpa_s->parent->p2p_oob_dev_pw,
1811                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1812                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1813 #endif /* CONFIG_WPS_NFC */
1814         } else if (wpa_s->p2p_pin[0])
1815                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1816                                           wpa_s->p2p_pin, NULL, 0, 0);
1817         os_free(wpa_s->go_params);
1818         wpa_s->go_params = NULL;
1819 }
1820
1821
1822 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1823                               struct p2p_go_neg_results *params,
1824                               int group_formation)
1825 {
1826         struct wpa_ssid *ssid;
1827
1828         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1829         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1830                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1831                         "results");
1832                 return;
1833         }
1834
1835         ssid = wpa_config_add_network(wpa_s->conf);
1836         if (ssid == NULL) {
1837                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1838                 return;
1839         }
1840
1841         wpa_s->show_group_started = 0;
1842         wpa_s->p2p_go_group_formation_completed = 0;
1843         wpa_s->group_formation_reported = 0;
1844         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1845
1846         wpa_config_set_network_defaults(ssid);
1847         ssid->temporary = 1;
1848         ssid->p2p_group = 1;
1849         ssid->p2p_persistent_group = params->persistent_group;
1850         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1851                 WPAS_MODE_P2P_GO;
1852         ssid->frequency = params->freq;
1853         ssid->ht40 = params->ht40;
1854         ssid->vht = params->vht;
1855         ssid->ssid = os_zalloc(params->ssid_len + 1);
1856         if (ssid->ssid) {
1857                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1858                 ssid->ssid_len = params->ssid_len;
1859         }
1860         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1861         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1862         ssid->proto = WPA_PROTO_RSN;
1863         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1864         ssid->group_cipher = WPA_CIPHER_CCMP;
1865         if (params->freq > 56160) {
1866                 /*
1867                  * Enable GCMP instead of CCMP as pairwise_cipher and
1868                  * group_cipher in 60 GHz.
1869                  */
1870                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1871                 ssid->group_cipher = WPA_CIPHER_GCMP;
1872         }
1873         if (os_strlen(params->passphrase) > 0) {
1874                 ssid->passphrase = os_strdup(params->passphrase);
1875                 if (ssid->passphrase == NULL) {
1876                         wpa_msg_global(wpa_s, MSG_ERROR,
1877                                        "P2P: Failed to copy passphrase for GO");
1878                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1879                         return;
1880                 }
1881         } else
1882                 ssid->passphrase = NULL;
1883         ssid->psk_set = params->psk_set;
1884         if (ssid->psk_set)
1885                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1886         else if (ssid->passphrase)
1887                 wpa_config_update_psk(ssid);
1888         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1889
1890         wpa_s->ap_configured_cb = p2p_go_configured;
1891         wpa_s->ap_configured_cb_ctx = wpa_s;
1892         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1893         wpa_s->scan_req = NORMAL_SCAN_REQ;
1894         wpa_s->connect_without_scan = ssid;
1895         wpa_s->reassociate = 1;
1896         wpa_s->disconnected = 0;
1897         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1898                 "start GO)");
1899         wpa_supplicant_req_scan(wpa_s, 0, 0);
1900 }
1901
1902
1903 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1904                                   const struct wpa_supplicant *src)
1905 {
1906         struct wpa_config *d;
1907         const struct wpa_config *s;
1908
1909         d = dst->conf;
1910         s = src->conf;
1911
1912 #define C(n) if (s->n) d->n = os_strdup(s->n)
1913         C(device_name);
1914         C(manufacturer);
1915         C(model_name);
1916         C(model_number);
1917         C(serial_number);
1918         C(config_methods);
1919 #undef C
1920
1921         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1922         os_memcpy(d->sec_device_type, s->sec_device_type,
1923                   sizeof(d->sec_device_type));
1924         d->num_sec_device_types = s->num_sec_device_types;
1925
1926         d->p2p_group_idle = s->p2p_group_idle;
1927         d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
1928         d->p2p_intra_bss = s->p2p_intra_bss;
1929         d->persistent_reconnect = s->persistent_reconnect;
1930         d->max_num_sta = s->max_num_sta;
1931         d->pbc_in_m1 = s->pbc_in_m1;
1932         d->ignore_old_scan_res = s->ignore_old_scan_res;
1933         d->beacon_int = s->beacon_int;
1934         d->dtim_period = s->dtim_period;
1935         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1936         d->disassoc_low_ack = s->disassoc_low_ack;
1937         d->disable_scan_offload = s->disable_scan_offload;
1938         d->passive_scan = s->passive_scan;
1939
1940         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1941                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1942                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1943         }
1944         d->p2p_cli_probe = s->p2p_cli_probe;
1945 }
1946
1947
1948 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1949                                       char *ifname, size_t len)
1950 {
1951         char *ifname_ptr = wpa_s->ifname;
1952
1953         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1954                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1955                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1956         }
1957
1958         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1959         if (os_strlen(ifname) >= IFNAMSIZ &&
1960             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1961                 int res;
1962
1963                 /* Try to avoid going over the IFNAMSIZ length limit */
1964                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1965                 if (os_snprintf_error(len, res) && len)
1966                         ifname[len - 1] = '\0';
1967         }
1968 }
1969
1970
1971 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1972                                         enum wpa_driver_if_type type)
1973 {
1974         char ifname[120], force_ifname[120];
1975
1976         if (wpa_s->pending_interface_name[0]) {
1977                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1978                            "- skip creation of a new one");
1979                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1980                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1981                                    "unknown?! ifname='%s'",
1982                                    wpa_s->pending_interface_name);
1983                         return -1;
1984                 }
1985                 return 0;
1986         }
1987
1988         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1989         force_ifname[0] = '\0';
1990
1991         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1992                    ifname);
1993         wpa_s->p2p_group_idx++;
1994
1995         wpa_s->pending_interface_type = type;
1996         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1997                            wpa_s->pending_interface_addr, NULL) < 0) {
1998                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1999                            "interface");
2000                 return -1;
2001         }
2002
2003         if (force_ifname[0]) {
2004                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2005                            force_ifname);
2006                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2007                            sizeof(wpa_s->pending_interface_name));
2008         } else
2009                 os_strlcpy(wpa_s->pending_interface_name, ifname,
2010                            sizeof(wpa_s->pending_interface_name));
2011         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2012                    MACSTR, wpa_s->pending_interface_name,
2013                    MAC2STR(wpa_s->pending_interface_addr));
2014
2015         return 0;
2016 }
2017
2018
2019 static void wpas_p2p_remove_pending_group_interface(
2020         struct wpa_supplicant *wpa_s)
2021 {
2022         if (!wpa_s->pending_interface_name[0] ||
2023             is_zero_ether_addr(wpa_s->pending_interface_addr))
2024                 return; /* No pending virtual interface */
2025
2026         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2027                    wpa_s->pending_interface_name);
2028         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2029                           wpa_s->pending_interface_name);
2030         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2031         wpa_s->pending_interface_name[0] = '\0';
2032         wpa_s->global->pending_group_iface_for_p2ps = 0;
2033 }
2034
2035
2036 static struct wpa_supplicant *
2037 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2038 {
2039         struct wpa_interface iface;
2040         struct wpa_supplicant *group_wpa_s;
2041
2042         if (!wpa_s->pending_interface_name[0]) {
2043                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2044                 if (!wpas_p2p_create_iface(wpa_s))
2045                         return NULL;
2046                 /*
2047                  * Something has forced us to remove the pending interface; try
2048                  * to create a new one and hope for the best that we will get
2049                  * the same local address.
2050                  */
2051                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2052                                                  WPA_IF_P2P_CLIENT) < 0)
2053                         return NULL;
2054         }
2055
2056         os_memset(&iface, 0, sizeof(iface));
2057         iface.ifname = wpa_s->pending_interface_name;
2058         iface.driver = wpa_s->driver->name;
2059         if (wpa_s->conf->ctrl_interface == NULL &&
2060             wpa_s->parent != wpa_s &&
2061             wpa_s->p2p_mgmt &&
2062             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2063                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2064         else
2065                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2066         iface.driver_param = wpa_s->conf->driver_param;
2067         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2068         if (group_wpa_s == NULL) {
2069                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2070                            "wpa_supplicant interface");
2071                 return NULL;
2072         }
2073         wpa_s->pending_interface_name[0] = '\0';
2074         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2075                 P2P_GROUP_INTERFACE_CLIENT;
2076         wpa_s->global->p2p_group_formation = group_wpa_s;
2077         wpa_s->global->pending_group_iface_for_p2ps = 0;
2078
2079         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2080
2081         return group_wpa_s;
2082 }
2083
2084
2085 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2086                                              void *timeout_ctx)
2087 {
2088         struct wpa_supplicant *wpa_s = eloop_ctx;
2089         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2090         wpas_p2p_group_formation_failed(wpa_s, 0);
2091 }
2092
2093
2094 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2095                                             int already_deleted)
2096 {
2097         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2098                              wpa_s->parent, NULL);
2099         if (wpa_s->global->p2p)
2100                 p2p_group_formation_failed(wpa_s->global->p2p);
2101         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2102 }
2103
2104
2105 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2106 {
2107         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2108         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2109                              wpa_s->parent, NULL);
2110         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2111                                wpa_s->parent, NULL);
2112         wpa_s->global->p2p_fail_on_wps_complete = 0;
2113 }
2114
2115
2116 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2117 {
2118         if (wpa_s->global->p2p_group_formation != wpa_s)
2119                 return;
2120         /* Speed up group formation timeout since this cannot succeed */
2121         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2122                              wpa_s->parent, NULL);
2123         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2124                                wpa_s->parent, NULL);
2125 }
2126
2127
2128 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2129 {
2130         struct wpa_supplicant *wpa_s = ctx;
2131
2132         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2133                 wpa_drv_cancel_remain_on_channel(wpa_s);
2134                 wpa_s->off_channel_freq = 0;
2135                 wpa_s->roc_waiting_drv_freq = 0;
2136         }
2137
2138         if (res->status) {
2139                 wpa_msg_global(wpa_s, MSG_INFO,
2140                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2141                                res->status);
2142                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2143                 wpas_p2p_remove_pending_group_interface(wpa_s);
2144                 return;
2145         }
2146
2147         if (!res->role_go) {
2148                 /* Inform driver of the operating channel of GO. */
2149                 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2150         }
2151
2152         if (wpa_s->p2p_go_ht40)
2153                 res->ht40 = 1;
2154         if (wpa_s->p2p_go_vht)
2155                 res->vht = 1;
2156
2157         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2158                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2159                        " wps_method=%s",
2160                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2161                        MAC2STR(res->peer_device_addr),
2162                        MAC2STR(res->peer_interface_addr),
2163                        p2p_wps_method_text(res->wps_method));
2164         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2165
2166         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2167                 struct wpa_ssid *ssid;
2168                 ssid = wpa_config_get_network(wpa_s->conf,
2169                                               wpa_s->p2p_persistent_id);
2170                 if (ssid && ssid->disabled == 2 &&
2171                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2172                         size_t len = os_strlen(ssid->passphrase);
2173                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2174                                    "on requested persistent group");
2175                         os_memcpy(res->passphrase, ssid->passphrase, len);
2176                         res->passphrase[len] = '\0';
2177                 }
2178         }
2179
2180         if (wpa_s->create_p2p_iface) {
2181                 struct wpa_supplicant *group_wpa_s =
2182                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2183                 if (group_wpa_s == NULL) {
2184                         wpas_p2p_remove_pending_group_interface(wpa_s);
2185                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2186                                              wpa_s, NULL);
2187                         wpas_p2p_group_formation_failed(wpa_s, 1);
2188                         return;
2189                 }
2190                 if (group_wpa_s != wpa_s) {
2191                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2192                                   sizeof(group_wpa_s->p2p_pin));
2193                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2194                 }
2195                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2196                 wpa_s->pending_interface_name[0] = '\0';
2197                 group_wpa_s->p2p_in_provisioning = 1;
2198
2199                 if (res->role_go) {
2200                         wpas_start_wps_go(group_wpa_s, res, 1);
2201                 } else {
2202                         os_get_reltime(&group_wpa_s->scan_min_time);
2203                         wpas_start_wps_enrollee(group_wpa_s, res);
2204                 }
2205         } else {
2206                 wpa_s->p2p_in_provisioning = 1;
2207                 wpa_s->global->p2p_group_formation = wpa_s;
2208
2209                 if (res->role_go) {
2210                         wpas_start_wps_go(wpa_s, res, 1);
2211                 } else {
2212                         os_get_reltime(&wpa_s->scan_min_time);
2213                         wpas_start_wps_enrollee(ctx, res);
2214                 }
2215         }
2216
2217         wpa_s->p2p_long_listen = 0;
2218         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2219
2220         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2221         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2222                                (res->peer_config_timeout % 100) * 10000,
2223                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2224 }
2225
2226
2227 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2228                                u8 go_intent)
2229 {
2230         struct wpa_supplicant *wpa_s = ctx;
2231         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2232                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2233                        dev_passwd_id, go_intent);
2234
2235         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2236 }
2237
2238
2239 static void wpas_dev_found(void *ctx, const u8 *addr,
2240                            const struct p2p_peer_info *info,
2241                            int new_device)
2242 {
2243 #ifndef CONFIG_NO_STDOUT_DEBUG
2244         struct wpa_supplicant *wpa_s = ctx;
2245         char devtype[WPS_DEV_TYPE_BUFSIZE];
2246         char *wfd_dev_info_hex = NULL;
2247
2248 #ifdef CONFIG_WIFI_DISPLAY
2249         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2250                                                     WFD_SUBELEM_DEVICE_INFO);
2251 #endif /* CONFIG_WIFI_DISPLAY */
2252
2253         if (info->p2ps_instance) {
2254                 char str[256];
2255                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2256                 size_t len = wpabuf_len(info->p2ps_instance);
2257
2258                 while (len) {
2259                         u32 id;
2260                         u16 methods;
2261                         u8 str_len;
2262
2263                         if (len < 4 + 2 + 1)
2264                                 break;
2265                         id = WPA_GET_LE32(buf);
2266                         buf += sizeof(u32);
2267                         methods = WPA_GET_BE16(buf);
2268                         buf += sizeof(u16);
2269                         str_len = *buf++;
2270                         if (str_len > len - 4 - 2 - 1)
2271                                 break;
2272                         os_memcpy(str, buf, str_len);
2273                         str[str_len] = '\0';
2274                         buf += str_len;
2275                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2276
2277                         wpa_msg_global(wpa_s, MSG_INFO,
2278                                        P2P_EVENT_DEVICE_FOUND MACSTR
2279                                        " p2p_dev_addr=" MACSTR
2280                                        " pri_dev_type=%s name='%s'"
2281                                        " config_methods=0x%x"
2282                                        " dev_capab=0x%x"
2283                                        " group_capab=0x%x"
2284                                        " adv_id=%x asp_svc=%s%s",
2285                                        MAC2STR(addr),
2286                                        MAC2STR(info->p2p_device_addr),
2287                                        wps_dev_type_bin2str(
2288                                                info->pri_dev_type,
2289                                                devtype, sizeof(devtype)),
2290                                        info->device_name, methods,
2291                                        info->dev_capab, info->group_capab,
2292                                        id, str,
2293                                        info->vendor_elems ?
2294                                        " vendor_elems=1" : "");
2295                 }
2296                 goto done;
2297         }
2298
2299         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2300                        " p2p_dev_addr=" MACSTR
2301                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2302                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2303                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2304                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2305                                             sizeof(devtype)),
2306                        info->device_name, info->config_methods,
2307                        info->dev_capab, info->group_capab,
2308                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2309                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2310                        info->vendor_elems ? " vendor_elems=1" : "",
2311                        new_device);
2312
2313 done:
2314         os_free(wfd_dev_info_hex);
2315 #endif /* CONFIG_NO_STDOUT_DEBUG */
2316
2317         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2318 }
2319
2320
2321 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2322 {
2323         struct wpa_supplicant *wpa_s = ctx;
2324
2325         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2326                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2327
2328         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2329 }
2330
2331
2332 static void wpas_find_stopped(void *ctx)
2333 {
2334         struct wpa_supplicant *wpa_s = ctx;
2335         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2336         wpas_notify_p2p_find_stopped(wpa_s);
2337 }
2338
2339
2340 struct wpas_p2p_listen_work {
2341         unsigned int freq;
2342         unsigned int duration;
2343         struct wpabuf *probe_resp_ie;
2344 };
2345
2346
2347 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2348 {
2349         if (lwork == NULL)
2350                 return;
2351         wpabuf_free(lwork->probe_resp_ie);
2352         os_free(lwork);
2353 }
2354
2355
2356 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2357 {
2358         struct wpas_p2p_listen_work *lwork;
2359
2360         if (!wpa_s->p2p_listen_work)
2361                 return;
2362
2363         lwork = wpa_s->p2p_listen_work->ctx;
2364         wpas_p2p_listen_work_free(lwork);
2365         radio_work_done(wpa_s->p2p_listen_work);
2366         wpa_s->p2p_listen_work = NULL;
2367 }
2368
2369
2370 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2371 {
2372         struct wpa_supplicant *wpa_s = work->wpa_s;
2373         struct wpas_p2p_listen_work *lwork = work->ctx;
2374         unsigned int duration;
2375
2376         if (deinit) {
2377                 if (work->started) {
2378                         wpa_s->p2p_listen_work = NULL;
2379                         wpas_stop_listen(wpa_s);
2380                 }
2381                 wpas_p2p_listen_work_free(lwork);
2382                 return;
2383         }
2384
2385         wpa_s->p2p_listen_work = work;
2386
2387         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2388
2389         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2390                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2391                            "report received Probe Request frames");
2392                 wpas_p2p_listen_work_done(wpa_s);
2393                 return;
2394         }
2395
2396         wpa_s->pending_listen_freq = lwork->freq;
2397         wpa_s->pending_listen_duration = lwork->duration;
2398
2399         duration = lwork->duration;
2400 #ifdef CONFIG_TESTING_OPTIONS
2401         if (wpa_s->extra_roc_dur) {
2402                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2403                            duration, duration + wpa_s->extra_roc_dur);
2404                 duration += wpa_s->extra_roc_dur;
2405         }
2406 #endif /* CONFIG_TESTING_OPTIONS */
2407
2408         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2409                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2410                            "to remain on channel (%u MHz) for Listen "
2411                            "state", lwork->freq);
2412                 wpas_p2p_listen_work_done(wpa_s);
2413                 wpa_s->pending_listen_freq = 0;
2414                 return;
2415         }
2416         wpa_s->off_channel_freq = 0;
2417         wpa_s->roc_waiting_drv_freq = lwork->freq;
2418 }
2419
2420
2421 static int wpas_start_listen(void *ctx, unsigned int freq,
2422                              unsigned int duration,
2423                              const struct wpabuf *probe_resp_ie)
2424 {
2425         struct wpa_supplicant *wpa_s = ctx;
2426         struct wpas_p2p_listen_work *lwork;
2427
2428         if (wpa_s->p2p_listen_work) {
2429                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2430                 return -1;
2431         }
2432
2433         lwork = os_zalloc(sizeof(*lwork));
2434         if (lwork == NULL)
2435                 return -1;
2436         lwork->freq = freq;
2437         lwork->duration = duration;
2438         if (probe_resp_ie) {
2439                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2440                 if (lwork->probe_resp_ie == NULL) {
2441                         wpas_p2p_listen_work_free(lwork);
2442                         return -1;
2443                 }
2444         }
2445
2446         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2447                            lwork) < 0) {
2448                 wpas_p2p_listen_work_free(lwork);
2449                 return -1;
2450         }
2451
2452         return 0;
2453 }
2454
2455
2456 static void wpas_stop_listen(void *ctx)
2457 {
2458         struct wpa_supplicant *wpa_s = ctx;
2459         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2460                 wpa_drv_cancel_remain_on_channel(wpa_s);
2461                 wpa_s->off_channel_freq = 0;
2462                 wpa_s->roc_waiting_drv_freq = 0;
2463         }
2464         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2465
2466         /*
2467          * Don't cancel Probe Request RX reporting for a connected P2P Client
2468          * handling Probe Request frames.
2469          */
2470         if (!wpa_s->p2p_cli_probe)
2471                 wpa_drv_probe_req_report(wpa_s, 0);
2472
2473         wpas_p2p_listen_work_done(wpa_s);
2474 }
2475
2476
2477 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2478                                 unsigned int freq)
2479 {
2480         struct wpa_supplicant *wpa_s = ctx;
2481         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2482                                  freq);
2483 }
2484
2485
2486 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2487                                          const u8 *peer, const char *params,
2488                                          unsigned int generated_pin)
2489 {
2490         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2491                        " %08d%s", MAC2STR(peer), generated_pin, params);
2492 }
2493
2494
2495 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2496                                         const u8 *peer, const char *params)
2497 {
2498         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2499                        "%s", MAC2STR(peer), params);
2500 }
2501
2502
2503 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2504                                const u8 *dev_addr, const u8 *pri_dev_type,
2505                                const char *dev_name, u16 supp_config_methods,
2506                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2507                                size_t group_id_len)
2508 {
2509         struct wpa_supplicant *wpa_s = ctx;
2510         char devtype[WPS_DEV_TYPE_BUFSIZE];
2511         char params[300];
2512         u8 empty_dev_type[8];
2513         unsigned int generated_pin = 0;
2514         struct wpa_supplicant *group = NULL;
2515         int res;
2516
2517         if (group_id) {
2518                 for (group = wpa_s->global->ifaces; group; group = group->next)
2519                 {
2520                         struct wpa_ssid *s = group->current_ssid;
2521                         if (s != NULL &&
2522                             s->mode == WPAS_MODE_P2P_GO &&
2523                             group_id_len - ETH_ALEN == s->ssid_len &&
2524                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2525                                       s->ssid_len) == 0)
2526                                 break;
2527                 }
2528         }
2529
2530         if (pri_dev_type == NULL) {
2531                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2532                 pri_dev_type = empty_dev_type;
2533         }
2534         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2535                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2536                           "dev_capab=0x%x group_capab=0x%x%s%s",
2537                           MAC2STR(dev_addr),
2538                           wps_dev_type_bin2str(pri_dev_type, devtype,
2539                                                sizeof(devtype)),
2540                           dev_name, supp_config_methods, dev_capab, group_capab,
2541                           group ? " group=" : "",
2542                           group ? group->ifname : "");
2543         if (os_snprintf_error(sizeof(params), res))
2544                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2545         params[sizeof(params) - 1] = '\0';
2546
2547         if (config_methods & WPS_CONFIG_DISPLAY) {
2548                 generated_pin = wps_generate_pin();
2549                 wpas_prov_disc_local_display(wpa_s, peer, params,
2550                                              generated_pin);
2551         } else if (config_methods & WPS_CONFIG_KEYPAD)
2552                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2553         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2554                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2555                                MACSTR "%s", MAC2STR(peer), params);
2556
2557         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2558                                             P2P_PROV_DISC_SUCCESS,
2559                                             config_methods, generated_pin);
2560 }
2561
2562
2563 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2564 {
2565         struct wpa_supplicant *wpa_s = ctx;
2566         unsigned int generated_pin = 0;
2567         char params[20];
2568
2569         if (wpa_s->pending_pd_before_join &&
2570             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2571              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2572                 wpa_s->pending_pd_before_join = 0;
2573                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2574                            "join-existing-group operation");
2575                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2576                 return;
2577         }
2578
2579         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2580             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2581                 int res;
2582
2583                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2584                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2585                 if (os_snprintf_error(sizeof(params), res))
2586                         params[sizeof(params) - 1] = '\0';
2587         } else
2588                 params[0] = '\0';
2589
2590         if (config_methods & WPS_CONFIG_DISPLAY)
2591                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2592         else if (config_methods & WPS_CONFIG_KEYPAD) {
2593                 generated_pin = wps_generate_pin();
2594                 wpas_prov_disc_local_display(wpa_s, peer, params,
2595                                              generated_pin);
2596         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2597                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2598                                MACSTR "%s", MAC2STR(peer), params);
2599
2600         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2601                                             P2P_PROV_DISC_SUCCESS,
2602                                             config_methods, generated_pin);
2603 }
2604
2605
2606 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2607                                 enum p2p_prov_disc_status status,
2608                                 u32 adv_id, const u8 *adv_mac,
2609                                 const char *deferred_session_resp)
2610 {
2611         struct wpa_supplicant *wpa_s = ctx;
2612
2613         if (wpa_s->p2p_fallback_to_go_neg) {
2614                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2615                         "failed - fall back to GO Negotiation");
2616                 wpa_msg_global(wpa_s->parent, MSG_INFO,
2617                                P2P_EVENT_FALLBACK_TO_GO_NEG
2618                                "reason=PD-failed");
2619                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2620                 return;
2621         }
2622
2623         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2624                 wpa_s->pending_pd_before_join = 0;
2625                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2626                            "join-existing-group operation (no ACK for PD "
2627                            "Req attempts)");
2628                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2629                 return;
2630         }
2631
2632         if (adv_id && adv_mac && deferred_session_resp) {
2633                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2634                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2635                                " deferred_session_resp='%s'",
2636                                MAC2STR(peer), status, adv_id,
2637                                deferred_session_resp);
2638         } else if (adv_id && adv_mac) {
2639                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2640                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2641                                MAC2STR(peer), status, adv_id);
2642         } else {
2643                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2644                                " p2p_dev_addr=" MACSTR " status=%d",
2645                                MAC2STR(peer), status);
2646         }
2647
2648         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2649                                             status, 0, 0);
2650 }
2651
2652
2653 static int freq_included(struct wpa_supplicant *wpa_s,
2654                          const struct p2p_channels *channels,
2655                          unsigned int freq)
2656 {
2657         if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2658             wpas_p2p_go_is_peer_freq(wpa_s, freq))
2659                 return 1;
2660         return 0;
2661 }
2662
2663
2664 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2665 {
2666         unsigned int num = P2P_MAX_CHANNELS;
2667         int *common_freqs;
2668         int ret;
2669
2670         p2p_go_dump_common_freqs(wpa_s);
2671         common_freqs = os_calloc(num, sizeof(int));
2672         if (!common_freqs)
2673                 return;
2674
2675         ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2676         if (ret < 0) {
2677                 wpa_dbg(wpa_s, MSG_DEBUG,
2678                         "P2P: Failed to get group common freqs");
2679                 os_free(common_freqs);
2680                 return;
2681         }
2682
2683         os_free(wpa_s->p2p_group_common_freqs);
2684         wpa_s->p2p_group_common_freqs = common_freqs;
2685         wpa_s->p2p_group_common_freqs_num = num;
2686         p2p_go_dump_common_freqs(wpa_s);
2687 }
2688
2689
2690 /*
2691  * Check if the given frequency is one of the possible operating frequencies
2692  * set after the completion of the GO Negotiation.
2693  */
2694 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2695 {
2696         unsigned int i;
2697
2698         p2p_go_dump_common_freqs(wpa_s);
2699
2700         /* assume no restrictions */
2701         if (!wpa_s->p2p_group_common_freqs_num)
2702                 return 1;
2703
2704         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2705                 if (wpa_s->p2p_group_common_freqs[i] == freq)
2706                         return 1;
2707         }
2708         return 0;
2709 }
2710
2711
2712 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2713                                struct sta_info *sta, void *ctx)
2714 {
2715         int *ecsa_support = ctx;
2716
2717         *ecsa_support &= sta->ecsa_supported;
2718
2719         return 0;
2720 }
2721
2722
2723 /* Check if all the peers support eCSA */
2724 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2725 {
2726         int ecsa_support = 1;
2727
2728         ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2729                         &ecsa_support);
2730
2731         return ecsa_support;
2732 }
2733
2734
2735 /**
2736  * Pick the best frequency to use from all the currently used frequencies.
2737  */
2738 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2739                                         struct wpa_used_freq_data *freqs,
2740                                         unsigned int num)
2741 {
2742         unsigned int i, c;
2743
2744         /* find a candidate freq that is supported by P2P */
2745         for (c = 0; c < num; c++)
2746                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2747                         break;
2748
2749         if (c == num)
2750                 return 0;
2751
2752         /* once we have a candidate, try to find a 'better' one */
2753         for (i = c + 1; i < num; i++) {
2754                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2755                         continue;
2756
2757                 /*
2758                  * 1. Infrastructure station interfaces have higher preference.
2759                  * 2. P2P Clients have higher preference.
2760                  * 3. All others.
2761                  */
2762                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2763                         c = i;
2764                         break;
2765                 }
2766
2767                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2768                         c = i;
2769         }
2770         return freqs[c].freq;
2771 }
2772
2773
2774 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2775                                   const u8 *go_dev_addr, const u8 *ssid,
2776                                   size_t ssid_len, int *go, u8 *group_bssid,
2777                                   int *force_freq, int persistent_group,
2778                                   const struct p2p_channels *channels,
2779                                   int dev_pw_id)
2780 {
2781         struct wpa_supplicant *wpa_s = ctx;
2782         struct wpa_ssid *s;
2783         struct wpa_used_freq_data *freqs;
2784         struct wpa_supplicant *grp;
2785         int best_freq;
2786
2787         if (!persistent_group) {
2788                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2789                            " to join an active group (SSID: %s)",
2790                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2791                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2792                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2793                      == 0 ||
2794                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2795                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2796                                    "authorized invitation");
2797                         goto accept_inv;
2798                 }
2799
2800 #ifdef CONFIG_WPS_NFC
2801                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2802                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2803                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2804                         wpa_s->p2p_wps_method = WPS_NFC;
2805                         wpa_s->pending_join_wps_method = WPS_NFC;
2806                         os_memcpy(wpa_s->pending_join_dev_addr,
2807                                   go_dev_addr, ETH_ALEN);
2808                         os_memcpy(wpa_s->pending_join_iface_addr,
2809                                   bssid, ETH_ALEN);
2810                         goto accept_inv;
2811                 }
2812 #endif /* CONFIG_WPS_NFC */
2813
2814                 /*
2815                  * Do not accept the invitation automatically; notify user and
2816                  * request approval.
2817                  */
2818                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2819         }
2820
2821         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2822         if (grp) {
2823                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2824                            "running persistent group");
2825                 if (*go)
2826                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2827                 goto accept_inv;
2828         }
2829
2830         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2831             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2832                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2833                            "invitation to re-invoke a persistent group");
2834                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2835         } else if (!wpa_s->conf->persistent_reconnect)
2836                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2837
2838         for (s = wpa_s->conf->ssid; s; s = s->next) {
2839                 if (s->disabled == 2 &&
2840                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2841                     s->ssid_len == ssid_len &&
2842                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2843                         break;
2844         }
2845
2846         if (!s) {
2847                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2848                            " requested reinvocation of an unknown group",
2849                            MAC2STR(sa));
2850                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2851         }
2852
2853         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2854                 *go = 1;
2855                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2856                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2857                                    "interface is already in use - reject "
2858                                    "invitation");
2859                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2860                 }
2861                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2862         } else if (s->mode == WPAS_MODE_P2P_GO) {
2863                 *go = 1;
2864                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2865                 {
2866                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2867                                    "interface address for the group");
2868                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2869                 }
2870                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2871                           ETH_ALEN);
2872         }
2873
2874 accept_inv:
2875         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2876
2877         best_freq = 0;
2878         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2879                           sizeof(struct wpa_used_freq_data));
2880         if (freqs) {
2881                 int num_channels = wpa_s->num_multichan_concurrent;
2882                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2883                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2884                 os_free(freqs);
2885         }
2886
2887         /* Get one of the frequencies currently in use */
2888         if (best_freq > 0) {
2889                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2890                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2891
2892                 if (wpa_s->num_multichan_concurrent < 2 ||
2893                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2894                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2895                         *force_freq = best_freq;
2896                 }
2897         }
2898
2899         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2900             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2901                 if (*go == 0) {
2902                         /* We are the client */
2903                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2904                                    "running a GO but we are capable of MCC, "
2905                                    "figure out the best channel to use");
2906                         *force_freq = 0;
2907                 } else if (!freq_included(wpa_s, channels, *force_freq)) {
2908                         /* We are the GO, and *force_freq is not in the
2909                          * intersection */
2910                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2911                                    "in intersection but we are capable of MCC, "
2912                                    "figure out the best channel to use",
2913                                    *force_freq);
2914                         *force_freq = 0;
2915                 }
2916         }
2917
2918         return P2P_SC_SUCCESS;
2919 }
2920
2921
2922 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2923                                      const u8 *ssid, size_t ssid_len,
2924                                      const u8 *go_dev_addr, u8 status,
2925                                      int op_freq)
2926 {
2927         struct wpa_supplicant *wpa_s = ctx;
2928         struct wpa_ssid *s;
2929
2930         for (s = wpa_s->conf->ssid; s; s = s->next) {
2931                 if (s->disabled == 2 &&
2932                     s->ssid_len == ssid_len &&
2933                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2934                         break;
2935         }
2936
2937         if (status == P2P_SC_SUCCESS) {
2938                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2939                            " was accepted; op_freq=%d MHz, SSID=%s",
2940                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
2941                 if (s) {
2942                         int go = s->mode == WPAS_MODE_P2P_GO;
2943                         wpas_p2p_group_add_persistent(
2944                                 wpa_s, s, go, 0, op_freq, 0, 0, NULL,
2945                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
2946                                 1);
2947                 } else if (bssid) {
2948                         wpa_s->user_initiated_pd = 0;
2949                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2950                                       wpa_s->p2p_wps_method, 0, op_freq,
2951                                       ssid, ssid_len);
2952                 }
2953                 return;
2954         }
2955
2956         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2957                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2958                            " was rejected (status %u)", MAC2STR(sa), status);
2959                 return;
2960         }
2961
2962         if (!s) {
2963                 if (bssid) {
2964                         wpa_msg_global(wpa_s, MSG_INFO,
2965                                        P2P_EVENT_INVITATION_RECEIVED
2966                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2967                                        " bssid=" MACSTR " unknown-network",
2968                                        MAC2STR(sa), MAC2STR(go_dev_addr),
2969                                        MAC2STR(bssid));
2970                 } else {
2971                         wpa_msg_global(wpa_s, MSG_INFO,
2972                                        P2P_EVENT_INVITATION_RECEIVED
2973                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2974                                        " unknown-network",
2975                                        MAC2STR(sa), MAC2STR(go_dev_addr));
2976                 }
2977                 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
2978                                                     bssid, 0, op_freq);
2979                 return;
2980         }
2981
2982         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
2983                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2984                                "sa=" MACSTR " persistent=%d freq=%d",
2985                                MAC2STR(sa), s->id, op_freq);
2986         } else {
2987                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2988                                "sa=" MACSTR " persistent=%d",
2989                                MAC2STR(sa), s->id);
2990         }
2991         wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
2992                                             s->id, op_freq);
2993 }
2994
2995
2996 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
2997                                         struct wpa_ssid *ssid,
2998                                         const u8 *peer, int inv)
2999 {
3000         size_t i;
3001         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3002
3003         if (ssid == NULL)
3004                 return;
3005
3006         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3007                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3008                               ETH_ALEN) == 0)
3009                         break;
3010         }
3011         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3012                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3013                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3014                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3015                                    "due to invitation result", ssid->id);
3016                         wpas_notify_network_removed(wpa_s, ssid);
3017                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3018                         return;
3019                 }
3020                 return; /* Peer not found in client list */
3021         }
3022
3023         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3024                    "group %d client list%s",
3025                    MAC2STR(peer), ssid->id,
3026                    inv ? " due to invitation result" : "");
3027         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3028                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3029                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3030         ssid->num_p2p_clients--;
3031         if (p2p_wpa_s->conf->update_config &&
3032             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3033                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3034 }
3035
3036
3037 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3038                                           const u8 *peer)
3039 {
3040         struct wpa_ssid *ssid;
3041
3042         wpa_s = wpa_s->global->p2p_invite_group;
3043         if (wpa_s == NULL)
3044                 return; /* No known invitation group */
3045         ssid = wpa_s->current_ssid;
3046         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3047             !ssid->p2p_persistent_group)
3048                 return; /* Not operating as a GO in persistent group */
3049         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3050                                        ssid->ssid, ssid->ssid_len);
3051         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3052 }
3053
3054
3055 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3056                                    const struct p2p_channels *channels,
3057                                    const u8 *peer, int neg_freq,
3058                                    int peer_oper_freq)
3059 {
3060         struct wpa_supplicant *wpa_s = ctx;
3061         struct wpa_ssid *ssid;
3062         int freq;
3063
3064         if (bssid) {
3065                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3066                                "status=%d " MACSTR,
3067                                status, MAC2STR(bssid));
3068         } else {
3069                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3070                                "status=%d ", status);
3071         }
3072         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3073
3074         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3075                    status, MAC2STR(peer));
3076         if (wpa_s->pending_invite_ssid_id == -1) {
3077                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3078                         wpas_remove_persistent_client(wpa_s, peer);
3079                 return; /* Invitation to active group */
3080         }
3081
3082         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3083                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3084                            "invitation exchange to indicate readiness for "
3085                            "re-invocation");
3086         }
3087
3088         if (status != P2P_SC_SUCCESS) {
3089                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3090                         ssid = wpa_config_get_network(
3091                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3092                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3093                 }
3094                 wpas_p2p_remove_pending_group_interface(wpa_s);
3095                 return;
3096         }
3097
3098         ssid = wpa_config_get_network(wpa_s->conf,
3099                                       wpa_s->pending_invite_ssid_id);
3100         if (ssid == NULL) {
3101                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3102                            "data matching with invitation");
3103                 return;
3104         }
3105
3106         /*
3107          * The peer could have missed our ctrl::ack frame for Invitation
3108          * Response and continue retransmitting the frame. To reduce the
3109          * likelihood of the peer not getting successful TX status for the
3110          * Invitation Response frame, wait a short time here before starting
3111          * the persistent group so that we will remain on the current channel to
3112          * acknowledge any possible retransmission from the peer.
3113          */
3114         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3115                 "starting persistent group");
3116         os_sleep(0, 50000);
3117
3118         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3119             freq_included(wpa_s, channels, neg_freq))
3120                 freq = neg_freq;
3121         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3122                  freq_included(wpa_s, channels, peer_oper_freq))
3123                 freq = peer_oper_freq;
3124         else
3125                 freq = 0;
3126
3127         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3128                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3129         wpas_p2p_group_add_persistent(wpa_s, ssid,
3130                                       ssid->mode == WPAS_MODE_P2P_GO,
3131                                       wpa_s->p2p_persistent_go_freq,
3132                                       freq,
3133                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3134                                       channels,
3135                                       ssid->mode == WPAS_MODE_P2P_GO ?
3136                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3137                                       0, 1);
3138 }
3139
3140
3141 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3142                                     unsigned int freq)
3143 {
3144         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3145                 return 1;
3146         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3147 }
3148
3149
3150 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3151 {
3152         reg->channel[reg->channels] = chan;
3153         reg->channels++;
3154 }
3155
3156
3157 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3158                                      struct p2p_channels *chan,
3159                                      struct p2p_channels *cli_chan)
3160 {
3161         int i, cla = 0;
3162
3163         wpa_s->global->p2p_24ghz_social_channels = 1;
3164
3165         os_memset(cli_chan, 0, sizeof(*cli_chan));
3166
3167         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3168                    "band");
3169
3170         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3171         chan->reg_class[cla].reg_class = 81;
3172         chan->reg_class[cla].channels = 0;
3173         for (i = 0; i < 11; i++) {
3174                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3175                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3176         }
3177         if (chan->reg_class[cla].channels)
3178                 cla++;
3179
3180         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3181                    "band");
3182
3183         /* Operating class 115 - 5 GHz, channels 36-48 */
3184         chan->reg_class[cla].reg_class = 115;
3185         chan->reg_class[cla].channels = 0;
3186         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3187                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3188         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3189                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3190         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3191                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3192         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3193                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3194         if (chan->reg_class[cla].channels)
3195                 cla++;
3196
3197         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3198                    "band");
3199
3200         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3201         chan->reg_class[cla].reg_class = 124;
3202         chan->reg_class[cla].channels = 0;
3203         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3204                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3205         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3206                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3207         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3208                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3209         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3210                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3211         if (chan->reg_class[cla].channels)
3212                 cla++;
3213
3214         chan->reg_classes = cla;
3215         return 0;
3216 }
3217
3218
3219 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3220                                           u16 num_modes,
3221                                           enum hostapd_hw_mode mode)
3222 {
3223         u16 i;
3224
3225         for (i = 0; i < num_modes; i++) {
3226                 if (modes[i].mode == mode)
3227                         return &modes[i];
3228         }
3229
3230         return NULL;
3231 }
3232
3233
3234 enum chan_allowed {
3235         NOT_ALLOWED, NO_IR, ALLOWED
3236 };
3237
3238 static int has_channel(struct wpa_global *global,
3239                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3240 {
3241         int i;
3242         unsigned int freq;
3243
3244         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3245                 chan * 5;
3246         if (wpas_p2p_disallowed_freq(global, freq))
3247                 return NOT_ALLOWED;
3248
3249         for (i = 0; i < mode->num_channels; i++) {
3250                 if (mode->channels[i].chan == chan) {
3251                         if (flags)
3252                                 *flags = mode->channels[i].flag;
3253                         if (mode->channels[i].flag &
3254                             (HOSTAPD_CHAN_DISABLED |
3255                              HOSTAPD_CHAN_RADAR))
3256                                 return NOT_ALLOWED;
3257                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3258                                 return NO_IR;
3259                         return ALLOWED;
3260                 }
3261         }
3262
3263         return NOT_ALLOWED;
3264 }
3265
3266
3267 struct p2p_oper_class_map {
3268         enum hostapd_hw_mode mode;
3269         u8 op_class;
3270         u8 min_chan;
3271         u8 max_chan;
3272         u8 inc;
3273         enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160 } bw;
3274 };
3275
3276 static const struct p2p_oper_class_map op_class[] = {
3277         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3278 #if 0 /* Do not enable HT40 on 2 GHz for now */
3279         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3280         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3281 #endif
3282         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3283         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3284         { HOSTAPD_MODE_IEEE80211A, 125, 149, 169, 4, BW20 },
3285         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3286         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3287         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3288         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3289
3290         /*
3291          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3292          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3293          * 80 MHz, but currently use the following definition for simplicity
3294          * (these center frequencies are not actual channels, which makes
3295          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3296          * removing invalid channels.
3297          */
3298         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3299         { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
3300         { -1, 0, 0, 0, 0, BW20 }
3301 };
3302
3303
3304 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3305                                      struct hostapd_hw_modes *mode,
3306                                      u8 channel)
3307 {
3308         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3309         unsigned int i;
3310
3311         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3312                 return 0;
3313
3314         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3315                 /*
3316                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3317                  * so the center channel is 6 channels away from the start/end.
3318                  */
3319                 if (channel >= center_channels[i] - 6 &&
3320                     channel <= center_channels[i] + 6)
3321                         return center_channels[i];
3322
3323         return 0;
3324 }
3325
3326
3327 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3328                                                struct hostapd_hw_modes *mode,
3329                                                u8 channel, u8 bw)
3330 {
3331         u8 center_chan;
3332         int i, flags;
3333         enum chan_allowed res, ret = ALLOWED;
3334
3335         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3336         if (!center_chan)
3337                 return NOT_ALLOWED;
3338         if (center_chan >= 58 && center_chan <= 138)
3339                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3340
3341         /* check all the channels are available */
3342         for (i = 0; i < 4; i++) {
3343                 int adj_chan = center_chan - 6 + i * 4;
3344
3345                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3346                 if (res == NOT_ALLOWED)
3347                         return NOT_ALLOWED;
3348                 if (res == NO_IR)
3349                         ret = NO_IR;
3350
3351                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3352                         return NOT_ALLOWED;
3353                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3354                         return NOT_ALLOWED;
3355                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3356                         return NOT_ALLOWED;
3357                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3358                         return NOT_ALLOWED;
3359         }
3360
3361         return ret;
3362 }
3363
3364
3365 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3366                                                  struct hostapd_hw_modes *mode,
3367                                                  u8 channel, u8 bw)
3368 {
3369         int flag = 0;
3370         enum chan_allowed res, res2;
3371
3372         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3373         if (bw == BW40MINUS) {
3374                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3375                         return NOT_ALLOWED;
3376                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3377         } else if (bw == BW40PLUS) {
3378                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3379                         return NOT_ALLOWED;
3380                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3381         } else if (bw == BW80) {
3382                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3383         }
3384
3385         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3386                 return NOT_ALLOWED;
3387         if (res == NO_IR || res2 == NO_IR)
3388                 return NO_IR;
3389         return res;
3390 }
3391
3392
3393 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3394                                    struct p2p_channels *chan,
3395                                    struct p2p_channels *cli_chan)
3396 {
3397         struct hostapd_hw_modes *mode;
3398         int cla, op, cli_cla;
3399
3400         if (wpa_s->hw.modes == NULL) {
3401                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3402                            "of all supported channels; assume dualband "
3403                            "support");
3404                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3405         }
3406
3407         cla = cli_cla = 0;
3408
3409         for (op = 0; op_class[op].op_class; op++) {
3410                 const struct p2p_oper_class_map *o = &op_class[op];
3411                 u8 ch;
3412                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3413
3414                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3415                 if (mode == NULL)
3416                         continue;
3417                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3418                         wpa_s->global->p2p_24ghz_social_channels = 1;
3419                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3420                         enum chan_allowed res;
3421                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3422                         if (res == ALLOWED) {
3423                                 if (reg == NULL) {
3424                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3425                                                    o->op_class);
3426                                         reg = &chan->reg_class[cla];
3427                                         cla++;
3428                                         reg->reg_class = o->op_class;
3429                                 }
3430                                 reg->channel[reg->channels] = ch;
3431                                 reg->channels++;
3432                         } else if (res == NO_IR &&
3433                                    wpa_s->conf->p2p_add_cli_chan) {
3434                                 if (cli_reg == NULL) {
3435                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3436                                                    o->op_class);
3437                                         cli_reg = &cli_chan->reg_class[cli_cla];
3438                                         cli_cla++;
3439                                         cli_reg->reg_class = o->op_class;
3440                                 }
3441                                 cli_reg->channel[cli_reg->channels] = ch;
3442                                 cli_reg->channels++;
3443                         }
3444                 }
3445                 if (reg) {
3446                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3447                                     reg->channel, reg->channels);
3448                 }
3449                 if (cli_reg) {
3450                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3451                                     cli_reg->channel, cli_reg->channels);
3452                 }
3453         }
3454
3455         chan->reg_classes = cla;
3456         cli_chan->reg_classes = cli_cla;
3457
3458         return 0;
3459 }
3460
3461
3462 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3463                            struct hostapd_hw_modes *mode, u8 channel)
3464 {
3465         int op;
3466         enum chan_allowed ret;
3467
3468         for (op = 0; op_class[op].op_class; op++) {
3469                 const struct p2p_oper_class_map *o = &op_class[op];
3470                 u8 ch;
3471
3472                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3473                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3474                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3475                             ch != channel)
3476                                 continue;
3477                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3478                         if (ret == ALLOWED)
3479                                 return (o->bw == BW40MINUS) ? -1 : 1;
3480                 }
3481         }
3482         return 0;
3483 }
3484
3485
3486 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3487                               struct hostapd_hw_modes *mode, u8 channel)
3488 {
3489         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3490                 return 0;
3491
3492         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3493 }
3494
3495
3496 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3497                         size_t buf_len)
3498 {
3499         struct wpa_supplicant *wpa_s = ctx;
3500
3501         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3502                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3503                         break;
3504         }
3505         if (wpa_s == NULL)
3506                 return -1;
3507
3508         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3509 }
3510
3511
3512 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3513                                               const u8 *ssid, size_t ssid_len)
3514 {
3515         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3516                 struct wpa_ssid *s = wpa_s->current_ssid;
3517                 if (s == NULL)
3518                         continue;
3519                 if (s->mode != WPAS_MODE_P2P_GO &&
3520                     s->mode != WPAS_MODE_AP &&
3521                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3522                         continue;
3523                 if (s->ssid_len != ssid_len ||
3524                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3525                         continue;
3526                 return wpa_s;
3527         }
3528
3529         return NULL;
3530
3531 }
3532
3533
3534 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3535                                                   const u8 *peer_dev_addr)
3536 {
3537         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3538                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3539                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3540                         continue;
3541                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3542                         return wpa_s;
3543         }
3544
3545         return NULL;
3546 }
3547
3548
3549 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3550 {
3551         struct wpa_supplicant *wpa_s = ctx;
3552
3553         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3554 }
3555
3556
3557 static int wpas_is_concurrent_session_active(void *ctx)
3558 {
3559         struct wpa_supplicant *wpa_s = ctx;
3560         struct wpa_supplicant *ifs;
3561
3562         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3563                 if (ifs == wpa_s)
3564                         continue;
3565                 if (ifs->wpa_state > WPA_ASSOCIATED)
3566                         return 1;
3567         }
3568         return 0;
3569 }
3570
3571
3572 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3573 {
3574         struct wpa_supplicant *wpa_s = ctx;
3575         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3576 }
3577
3578
3579 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3580                                   const char *conf_p2p_dev)
3581 {
3582         struct wpa_interface iface;
3583         struct wpa_supplicant *p2pdev_wpa_s;
3584         char ifname[100];
3585         char force_name[100];
3586         int ret;
3587
3588         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3589                           wpa_s->ifname);
3590         if (os_snprintf_error(sizeof(ifname), ret))
3591                 return -1;
3592         force_name[0] = '\0';
3593         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3594         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3595                              force_name, wpa_s->pending_interface_addr, NULL);
3596         if (ret < 0) {
3597                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3598                 return ret;
3599         }
3600         os_strlcpy(wpa_s->pending_interface_name, ifname,
3601                    sizeof(wpa_s->pending_interface_name));
3602
3603         os_memset(&iface, 0, sizeof(iface));
3604         iface.p2p_mgmt = 1;
3605         iface.ifname = wpa_s->pending_interface_name;
3606         iface.driver = wpa_s->driver->name;
3607         iface.driver_param = wpa_s->conf->driver_param;
3608
3609         /*
3610          * If a P2P Device configuration file was given, use it as the interface
3611          * configuration file (instead of using parent's configuration file.
3612          */
3613         if (conf_p2p_dev) {
3614                 iface.confname = conf_p2p_dev;
3615                 iface.ctrl_interface = NULL;
3616         } else {
3617                 iface.confname = wpa_s->confname;
3618                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3619         }
3620
3621         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3622         if (!p2pdev_wpa_s) {
3623                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3624                 return -1;
3625         }
3626
3627         wpa_s->pending_interface_name[0] = '\0';
3628         return 0;
3629 }
3630
3631
3632 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3633                                const u8 *noa, size_t noa_len)
3634 {
3635         struct wpa_supplicant *wpa_s, *intf = ctx;
3636         char hex[100];
3637
3638         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3639                 if (wpa_s->waiting_presence_resp)
3640                         break;
3641         }
3642         if (!wpa_s) {
3643                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3644                 return;
3645         }
3646         wpa_s->waiting_presence_resp = 0;
3647
3648         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3649         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3650                 " status=%u noa=%s", MAC2STR(src), status, hex);
3651 }
3652
3653
3654 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3655                                      size_t ssid_len, u8 *go_dev_addr,
3656                                      u8 *ret_ssid, size_t *ret_ssid_len,
3657                                      u8 *intended_iface_addr)
3658 {
3659         struct wpa_supplicant *wpa_s = ctx;
3660         struct wpa_ssid *s;
3661
3662         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3663         if (s) {
3664                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3665                 *ret_ssid_len = s->ssid_len;
3666                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3667
3668                 if (s->mode != WPAS_MODE_P2P_GO) {
3669                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3670                 } else if (wpas_p2p_create_iface(wpa_s)) {
3671                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3672                                 return 0;
3673
3674                         os_memcpy(intended_iface_addr,
3675                                   wpa_s->pending_interface_addr, ETH_ALEN);
3676                 } else {
3677                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3678                                   ETH_ALEN);
3679                 }
3680                 return 1;
3681         }
3682
3683         return 0;
3684 }
3685
3686
3687 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3688                             u8 *ssid, size_t *ssid_len, int *group_iface)
3689 {
3690         struct wpa_supplicant *wpa_s = ctx;
3691         struct wpa_ssid *s;
3692         u8 bssid[ETH_ALEN];
3693
3694         /*
3695          * group_iface will be set to 1 only if a dedicated interface for P2P
3696          * role is required. First, we try to reuse an active GO. However,
3697          * if it is not present, we will try to reactivate an existing
3698          * persistent group and set group_iface to 1, so the caller will know
3699          * that the pending interface should be used.
3700          */
3701         *group_iface = 0;
3702         s = wpas_p2p_group_go_ssid(wpa_s, bssid);
3703         if (!s) {
3704                 s = wpas_p2p_get_persistent_go(wpa_s);
3705                 *group_iface = wpas_p2p_create_iface(wpa_s);
3706                 if (s)
3707                         os_memcpy(bssid, s->bssid, ETH_ALEN);
3708                 else
3709                         return 0;
3710         }
3711
3712         os_memcpy(intended_addr, bssid, ETH_ALEN);
3713         os_memcpy(ssid, s->ssid, s->ssid_len);
3714         *ssid_len = s->ssid_len;
3715
3716         return 1;
3717 }
3718
3719
3720 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3721                                     const u8 *ssid, size_t ssid_len)
3722 {
3723         struct wpa_supplicant *wpa_s = ctx;
3724         struct wpa_ssid *s;
3725         int save_config = 0;
3726         size_t i;
3727
3728         /* Start with our first choice of Persistent Groups */
3729         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3730                 if (go && ssid && ssid_len &&
3731                     s->ssid_len == ssid_len &&
3732                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3733                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3734                         break;
3735
3736                 /* Remove stale persistent group */
3737                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3738                         wpa_config_remove_network(wpa_s->conf, s->id);
3739                         save_config = 1;
3740                         continue;
3741                 }
3742
3743                 for (i = 0; i < s->num_p2p_clients; i++) {
3744                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3745                                       peer, ETH_ALEN) != 0)
3746                                 continue;
3747
3748                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3749                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3750                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3751                         break;
3752                 }
3753                 s->num_p2p_clients--;
3754                 save_config = 1;
3755         }
3756
3757         if (save_config)
3758                 p2p_config_write(wpa_s);
3759
3760         /* Return TRUE if valid SSID remains */
3761         return s != NULL;
3762 }
3763
3764
3765 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3766                                        const u8 *feat_cap, size_t feat_cap_len)
3767 {
3768         static const char pref[] = " feature_cap=";
3769         int ret;
3770
3771         buf[0] = '\0';
3772
3773         /*
3774          * We expect a feature capability to contain at least one byte to be
3775          * reported. The string buffer provided by the caller function is
3776          * expected to be big enough to contain all bytes of the attribute for
3777          * known specifications. This function truncates the reported bytes if
3778          * the feature capability data exceeds the string buffer size.
3779          */
3780         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3781                 return;
3782
3783         os_memcpy(buf, pref, sizeof(pref));
3784         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3785                                buf_len - sizeof(pref) + 1,
3786                                feat_cap, feat_cap_len);
3787
3788         if (ret != (2 * (int) feat_cap_len))
3789                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3790 }
3791
3792
3793 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3794                                     const u8 *adv_mac, const u8 *ses_mac,
3795                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3796                                     u8 conncap, int passwd_id,
3797                                     const u8 *persist_ssid,
3798                                     size_t persist_ssid_size, int response_done,
3799                                     int prov_start, const char *session_info,
3800                                     const u8 *feat_cap, size_t feat_cap_len)
3801 {
3802         struct wpa_supplicant *wpa_s = ctx;
3803         u8 mac[ETH_ALEN];
3804         struct wpa_ssid *persistent_go, *stale, *s;
3805         int save_config = 0;
3806         struct wpa_supplicant *go_wpa_s;
3807         char feat_cap_str[256];
3808
3809         if (!dev)
3810                 return;
3811
3812         os_memset(mac, 0, ETH_ALEN);
3813         if (!adv_mac)
3814                 adv_mac = mac;
3815         if (!ses_mac)
3816                 ses_mac = mac;
3817         if (!grp_mac)
3818                 grp_mac = mac;
3819
3820         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3821                                    feat_cap, feat_cap_len);
3822
3823         if (prov_start) {
3824                 if (session_info == NULL) {
3825                         wpa_msg_global(wpa_s, MSG_INFO,
3826                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3827                                        " adv_id=%x conncap=%x"
3828                                        " adv_mac=" MACSTR
3829                                        " session=%x mac=" MACSTR
3830                                        " dev_passwd_id=%d%s",
3831                                        MAC2STR(dev), adv_id, conncap,
3832                                        MAC2STR(adv_mac),
3833                                        ses_id, MAC2STR(ses_mac),
3834                                        passwd_id, feat_cap_str);
3835                 } else {
3836                         wpa_msg_global(wpa_s, MSG_INFO,
3837                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3838                                        " adv_id=%x conncap=%x"
3839                                        " adv_mac=" MACSTR
3840                                        " session=%x mac=" MACSTR
3841                                        " dev_passwd_id=%d info='%s'%s",
3842                                        MAC2STR(dev), adv_id, conncap,
3843                                        MAC2STR(adv_mac),
3844                                        ses_id, MAC2STR(ses_mac),
3845                                        passwd_id, session_info, feat_cap_str);
3846                 }
3847                 return;
3848         }
3849
3850         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
3851         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3852
3853         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
3854                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3855                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3856
3857                 if (persistent_go && !persistent_go->num_p2p_clients) {
3858                         /* remove empty persistent GO */
3859                         wpa_config_remove_network(wpa_s->conf,
3860                                                   persistent_go->id);
3861                 }
3862
3863                 wpa_msg_global(wpa_s, MSG_INFO,
3864                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3865                                " status=%d"
3866                                " adv_id=%x adv_mac=" MACSTR
3867                                " session=%x mac=" MACSTR "%s",
3868                                MAC2STR(dev), status,
3869                                adv_id, MAC2STR(adv_mac),
3870                                ses_id, MAC2STR(ses_mac), feat_cap_str);
3871                 return;
3872         }
3873
3874         /* Clean up stale persistent groups with this device */
3875         s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
3876                                     persist_ssid_size);
3877
3878         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
3879             is_zero_ether_addr(grp_mac)) {
3880                 wpa_dbg(wpa_s, MSG_ERROR,
3881                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
3882                 return;
3883         }
3884
3885         for (;;) {
3886                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
3887                 if (!stale)
3888                         break;
3889
3890                 if (s && s->ssid_len == stale->ssid_len &&
3891                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
3892                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
3893                         break;
3894
3895                 /* Remove stale persistent group */
3896                 if (stale->mode != WPAS_MODE_P2P_GO ||
3897                     stale->num_p2p_clients <= 1) {
3898                         wpa_config_remove_network(wpa_s->conf, stale->id);
3899                 } else {
3900                         size_t i;
3901
3902                         for (i = 0; i < stale->num_p2p_clients; i++) {
3903                                 if (os_memcmp(stale->p2p_client_list +
3904                                               i * ETH_ALEN,
3905                                               dev, ETH_ALEN) == 0) {
3906                                         os_memmove(stale->p2p_client_list +
3907                                                    i * ETH_ALEN,
3908                                                    stale->p2p_client_list +
3909                                                    (i + 1) * ETH_ALEN,
3910                                                    (stale->num_p2p_clients -
3911                                                     i - 1) * ETH_ALEN);
3912                                         break;
3913                                 }
3914                         }
3915                         stale->num_p2p_clients--;
3916                 }
3917                 save_config = 1;
3918         }
3919
3920         if (save_config)
3921                 p2p_config_write(wpa_s);
3922
3923         if (s) {
3924                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3925                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3926
3927                 if (persistent_go && s != persistent_go &&
3928                     !persistent_go->num_p2p_clients) {
3929                         /* remove empty persistent GO */
3930                         wpa_config_remove_network(wpa_s->conf,
3931                                                   persistent_go->id);
3932                         /* Save config */
3933                 }
3934
3935                 wpa_msg_global(wpa_s, MSG_INFO,
3936                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3937                                " status=%d"
3938                                " adv_id=%x adv_mac=" MACSTR
3939                                " session=%x mac=" MACSTR
3940                                " persist=%d%s",
3941                                MAC2STR(dev), status,
3942                                adv_id, MAC2STR(adv_mac),
3943                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
3944                 return;
3945         }
3946
3947         if (conncap == P2PS_SETUP_GROUP_OWNER) {
3948                 /*
3949                  * We need to copy the interface name. Simply saving a
3950                  * pointer isn't enough, since if we use pending_interface_name
3951                  * it will be overwritten when the group is added.
3952                  */
3953                 char go_ifname[100];
3954
3955                 go_ifname[0] = '\0';
3956                 if (!go_wpa_s) {
3957                         wpa_s->global->pending_p2ps_group = 1;
3958
3959                         if (!wpas_p2p_create_iface(wpa_s))
3960                                 os_memcpy(go_ifname, wpa_s->ifname,
3961                                           sizeof(go_ifname));
3962                         else if (wpa_s->pending_interface_name[0])
3963                                 os_memcpy(go_ifname,
3964                                           wpa_s->pending_interface_name,
3965                                           sizeof(go_ifname));
3966
3967                         if (!go_ifname[0]) {
3968                                 wpas_p2ps_prov_complete(
3969                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
3970                                         dev, adv_mac, ses_mac,
3971                                         grp_mac, adv_id, ses_id, 0, 0,
3972                                         NULL, 0, 0, 0, NULL, NULL, 0);
3973                                 return;
3974                         }
3975
3976                         /* If PD Resp complete, start up the GO */
3977                         if (response_done && persistent_go) {
3978                                 wpas_p2p_group_add_persistent(
3979                                         wpa_s, persistent_go,
3980                                         0, 0, 0, 0, 0, NULL,
3981                                         persistent_go->mode ==
3982                                         WPAS_MODE_P2P_GO ?
3983                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3984                                         0, 0);
3985                         } else if (response_done) {
3986                                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
3987                         }
3988
3989                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3990                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
3991                                           ETH_ALEN);
3992                                 wpa_s->p2ps_method_config_any = 1;
3993                         }
3994                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3995                         os_memcpy(go_ifname, go_wpa_s->ifname,
3996                                   sizeof(go_ifname));
3997
3998                         if (is_zero_ether_addr(grp_mac)) {
3999                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4000                                         "P2P: Setting PIN-1 for ANY");
4001                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4002                                                           "12345670", NULL, 0,
4003                                                           0);
4004                         } else {
4005                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4006                                         "P2P: Setting PIN-1 for " MACSTR,
4007                                         MAC2STR(grp_mac));
4008                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4009                                                           "12345670", NULL, 0,
4010                                                           0);
4011                         }
4012
4013                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4014                         wpa_s->p2ps_method_config_any = 1;
4015                 }
4016
4017                 wpa_msg_global(wpa_s, MSG_INFO,
4018                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4019                                " status=%d conncap=%x"
4020                                " adv_id=%x adv_mac=" MACSTR
4021                                " session=%x mac=" MACSTR
4022                                " dev_passwd_id=%d go=%s%s",
4023                                MAC2STR(dev), status, conncap,
4024                                adv_id, MAC2STR(adv_mac),
4025                                ses_id, MAC2STR(ses_mac),
4026                                passwd_id, go_ifname, feat_cap_str);
4027                 return;
4028         }
4029
4030         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4031                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4032
4033         if (persistent_go && !persistent_go->num_p2p_clients) {
4034                 /* remove empty persistent GO */
4035                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4036         }
4037
4038         if (conncap == P2PS_SETUP_CLIENT) {
4039                 wpa_msg_global(wpa_s, MSG_INFO,
4040                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4041                                " status=%d conncap=%x"
4042                                " adv_id=%x adv_mac=" MACSTR
4043                                " session=%x mac=" MACSTR
4044                                " dev_passwd_id=%d join=" MACSTR "%s",
4045                                MAC2STR(dev), status, conncap,
4046                                adv_id, MAC2STR(adv_mac),
4047                                ses_id, MAC2STR(ses_mac),
4048                                passwd_id, MAC2STR(grp_mac), feat_cap_str);
4049         } else {
4050                 wpa_msg_global(wpa_s, MSG_INFO,
4051                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4052                                " status=%d conncap=%x"
4053                                " adv_id=%x adv_mac=" MACSTR
4054                                " session=%x mac=" MACSTR
4055                                " dev_passwd_id=%d%s",
4056                                MAC2STR(dev), status, conncap,
4057                                adv_id, MAC2STR(adv_mac),
4058                                ses_id, MAC2STR(ses_mac),
4059                                passwd_id, feat_cap_str);
4060         }
4061 }
4062
4063
4064 static int _wpas_p2p_in_progress(void *ctx)
4065 {
4066         struct wpa_supplicant *wpa_s = ctx;
4067         return wpas_p2p_in_progress(wpa_s);
4068 }
4069
4070
4071 static int wpas_prov_disc_resp_cb(void *ctx)
4072 {
4073         struct wpa_supplicant *wpa_s = ctx;
4074         struct wpa_ssid *persistent_go;
4075
4076         if (!wpa_s->global->pending_p2ps_group)
4077                 return 0;
4078
4079         wpa_s->global->pending_p2ps_group = 0;
4080
4081         if (wpas_p2p_get_go_group(wpa_s))
4082                 return 0;
4083         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4084
4085         if (persistent_go) {
4086                 wpas_p2p_group_add_persistent(
4087                         wpa_s, persistent_go, 0, 0, 0, 0, 0, NULL,
4088                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4089                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4090         } else {
4091                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
4092         }
4093
4094         return 1;
4095 }
4096
4097
4098 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4099                                        unsigned int *len,
4100                                        unsigned int *freq_list)
4101 {
4102         struct wpa_supplicant *wpa_s = ctx;
4103
4104         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4105                                           WPA_IF_P2P_CLIENT, len, freq_list);
4106 }
4107
4108
4109 /**
4110  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4111  * @global: Pointer to global data from wpa_supplicant_init()
4112  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4113  * Returns: 0 on success, -1 on failure
4114  */
4115 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4116 {
4117         struct p2p_config p2p;
4118         int i;
4119
4120         if (wpa_s->conf->p2p_disabled)
4121                 return 0;
4122
4123         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4124                 return 0;
4125
4126         if (global->p2p)
4127                 return 0;
4128
4129         os_memset(&p2p, 0, sizeof(p2p));
4130         p2p.cb_ctx = wpa_s;
4131         p2p.debug_print = wpas_p2p_debug_print;
4132         p2p.p2p_scan = wpas_p2p_scan;
4133         p2p.send_action = wpas_send_action;
4134         p2p.send_action_done = wpas_send_action_done;
4135         p2p.go_neg_completed = wpas_go_neg_completed;
4136         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4137         p2p.dev_found = wpas_dev_found;
4138         p2p.dev_lost = wpas_dev_lost;
4139         p2p.find_stopped = wpas_find_stopped;
4140         p2p.start_listen = wpas_start_listen;
4141         p2p.stop_listen = wpas_stop_listen;
4142         p2p.send_probe_resp = wpas_send_probe_resp;
4143         p2p.sd_request = wpas_sd_request;
4144         p2p.sd_response = wpas_sd_response;
4145         p2p.prov_disc_req = wpas_prov_disc_req;
4146         p2p.prov_disc_resp = wpas_prov_disc_resp;
4147         p2p.prov_disc_fail = wpas_prov_disc_fail;
4148         p2p.invitation_process = wpas_invitation_process;
4149         p2p.invitation_received = wpas_invitation_received;
4150         p2p.invitation_result = wpas_invitation_result;
4151         p2p.get_noa = wpas_get_noa;
4152         p2p.go_connected = wpas_go_connected;
4153         p2p.presence_resp = wpas_presence_resp;
4154         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4155         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4156         p2p.get_persistent_group = wpas_get_persistent_group;
4157         p2p.get_go_info = wpas_get_go_info;
4158         p2p.remove_stale_groups = wpas_remove_stale_groups;
4159         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4160         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4161         p2p.p2ps_group_capability = p2ps_group_capability;
4162         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4163
4164         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4165         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4166         p2p.dev_name = wpa_s->conf->device_name;
4167         p2p.manufacturer = wpa_s->conf->manufacturer;
4168         p2p.model_name = wpa_s->conf->model_name;
4169         p2p.model_number = wpa_s->conf->model_number;
4170         p2p.serial_number = wpa_s->conf->serial_number;
4171         if (wpa_s->wps) {
4172                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4173                 p2p.config_methods = wpa_s->wps->config_methods;
4174         }
4175
4176         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4177                 wpa_printf(MSG_ERROR,
4178                            "P2P: Failed to configure supported channel list");
4179                 return -1;
4180         }
4181
4182         if (wpa_s->conf->p2p_listen_reg_class &&
4183             wpa_s->conf->p2p_listen_channel) {
4184                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4185                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4186                 p2p.channel_forced = 1;
4187         } else {
4188                 /*
4189                  * Pick one of the social channels randomly as the listen
4190                  * channel.
4191                  */
4192                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4193                                                  &p2p.channel) != 0) {
4194                         wpa_printf(MSG_INFO,
4195                                    "P2P: No social channels supported by the driver - do not enable P2P");
4196                         return 0;
4197                 }
4198                 p2p.channel_forced = 0;
4199         }
4200         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4201                    p2p.reg_class, p2p.channel);
4202
4203         if (wpa_s->conf->p2p_oper_reg_class &&
4204             wpa_s->conf->p2p_oper_channel) {
4205                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4206                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4207                 p2p.cfg_op_channel = 1;
4208                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4209                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4210
4211         } else {
4212                 /*
4213                  * Use random operation channel from 2.4 GHz band social
4214                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4215                  * other preference is indicated.
4216                  */
4217                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4218                                                  &p2p.op_channel) != 0) {
4219                         wpa_printf(MSG_ERROR,
4220                                    "P2P: Failed to select random social channel as operation channel");
4221                         return -1;
4222                 }
4223                 p2p.cfg_op_channel = 0;
4224                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4225                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4226         }
4227
4228         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4229                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4230                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4231         }
4232
4233         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4234                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4235                 p2p.country[2] = 0x04;
4236         } else
4237                 os_memcpy(p2p.country, "XX\x04", 3);
4238
4239         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4240                   WPS_DEV_TYPE_LEN);
4241
4242         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4243         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4244                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4245
4246         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4247                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4248
4249         p2p.max_peers = 100;
4250
4251         if (wpa_s->conf->p2p_ssid_postfix) {
4252                 p2p.ssid_postfix_len =
4253                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4254                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4255                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4256                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4257                           p2p.ssid_postfix_len);
4258         }
4259
4260         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4261
4262         p2p.max_listen = wpa_s->max_remain_on_chan;
4263
4264         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4265             wpa_s->conf->p2p_passphrase_len <= 63)
4266                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4267         else
4268                 p2p.passphrase_len = 8;
4269
4270         global->p2p = p2p_init(&p2p);
4271         if (global->p2p == NULL)
4272                 return -1;
4273         global->p2p_init_wpa_s = wpa_s;
4274
4275         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4276                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4277                         continue;
4278                 p2p_add_wps_vendor_extension(
4279                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4280         }
4281
4282         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4283
4284         return 0;
4285 }
4286
4287
4288 /**
4289  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4290  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4291  *
4292  * This function deinitialize per-interface P2P data.
4293  */
4294 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4295 {
4296         if (wpa_s->driver && wpa_s->drv_priv)
4297                 wpa_drv_probe_req_report(wpa_s, 0);
4298
4299         if (wpa_s->go_params) {
4300                 /* Clear any stored provisioning info */
4301                 p2p_clear_provisioning_info(
4302                         wpa_s->global->p2p,
4303                         wpa_s->go_params->peer_device_addr);
4304         }
4305
4306         os_free(wpa_s->go_params);
4307         wpa_s->go_params = NULL;
4308         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4309         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4310         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4311         wpa_s->p2p_long_listen = 0;
4312         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4313         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4314         wpas_p2p_remove_pending_group_interface(wpa_s);
4315         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4316         wpas_p2p_listen_work_done(wpa_s);
4317         if (wpa_s->p2p_send_action_work) {
4318                 os_free(wpa_s->p2p_send_action_work->ctx);
4319                 radio_work_done(wpa_s->p2p_send_action_work);
4320                 wpa_s->p2p_send_action_work = NULL;
4321         }
4322         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4323
4324         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4325         wpa_s->p2p_oob_dev_pw = NULL;
4326
4327         os_free(wpa_s->p2p_group_common_freqs);
4328         wpa_s->p2p_group_common_freqs = NULL;
4329         wpa_s->p2p_group_common_freqs_num = 0;
4330
4331         /* TODO: remove group interface from the driver if this wpa_s instance
4332          * is on top of a P2P group interface */
4333 }
4334
4335
4336 /**
4337  * wpas_p2p_deinit_global - Deinitialize global P2P module
4338  * @global: Pointer to global data from wpa_supplicant_init()
4339  *
4340  * This function deinitializes the global (per device) P2P module.
4341  */
4342 static void wpas_p2p_deinit_global(struct wpa_global *global)
4343 {
4344         struct wpa_supplicant *wpa_s, *tmp;
4345
4346         wpa_s = global->ifaces;
4347
4348         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4349
4350         /* Remove remaining P2P group interfaces */
4351         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4352                 wpa_s = wpa_s->next;
4353         while (wpa_s) {
4354                 tmp = global->ifaces;
4355                 while (tmp &&
4356                        (tmp == wpa_s ||
4357                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4358                         tmp = tmp->next;
4359                 }
4360                 if (tmp == NULL)
4361                         break;
4362                 /* Disconnect from the P2P group and deinit the interface */
4363                 wpas_p2p_disconnect(tmp);
4364         }
4365
4366         /*
4367          * Deinit GO data on any possibly remaining interface (if main
4368          * interface is used as GO).
4369          */
4370         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4371                 if (wpa_s->ap_iface)
4372                         wpas_p2p_group_deinit(wpa_s);
4373         }
4374
4375         p2p_deinit(global->p2p);
4376         global->p2p = NULL;
4377         global->p2p_init_wpa_s = NULL;
4378 }
4379
4380
4381 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4382 {
4383         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4384             wpa_s->conf->p2p_no_group_iface)
4385                 return 0; /* separate interface disabled per configuration */
4386         if (wpa_s->drv_flags &
4387             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4388              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4389                 return 1; /* P2P group requires a new interface in every case
4390                            */
4391         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4392                 return 0; /* driver does not support concurrent operations */
4393         if (wpa_s->global->ifaces->next)
4394                 return 1; /* more that one interface already in use */
4395         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4396                 return 1; /* this interface is already in use */
4397         return 0;
4398 }
4399
4400
4401 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4402                                  const u8 *peer_addr,
4403                                  enum p2p_wps_method wps_method,
4404                                  int go_intent, const u8 *own_interface_addr,
4405                                  unsigned int force_freq, int persistent_group,
4406                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4407 {
4408         if (persistent_group && wpa_s->conf->persistent_reconnect)
4409                 persistent_group = 2;
4410
4411         /*
4412          * Increase GO config timeout if HT40 is used since it takes some time
4413          * to scan channels for coex purposes before the BSS can be started.
4414          */
4415         p2p_set_config_timeout(wpa_s->global->p2p,
4416                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4417
4418         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4419                            go_intent, own_interface_addr, force_freq,
4420                            persistent_group, ssid ? ssid->ssid : NULL,
4421                            ssid ? ssid->ssid_len : 0,
4422                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4423                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4424                            0);
4425 }
4426
4427
4428 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4429                                 const u8 *peer_addr,
4430                                 enum p2p_wps_method wps_method,
4431                                 int go_intent, const u8 *own_interface_addr,
4432                                 unsigned int force_freq, int persistent_group,
4433                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4434 {
4435         if (persistent_group && wpa_s->conf->persistent_reconnect)
4436                 persistent_group = 2;
4437
4438         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4439                              go_intent, own_interface_addr, force_freq,
4440                              persistent_group, ssid ? ssid->ssid : NULL,
4441                              ssid ? ssid->ssid_len : 0, pref_freq,
4442                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4443                              0);
4444 }
4445
4446
4447 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4448 {
4449         wpa_s->p2p_join_scan_count++;
4450         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4451                    wpa_s->p2p_join_scan_count);
4452         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4453                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4454                            " for join operationg - stop join attempt",
4455                            MAC2STR(wpa_s->pending_join_iface_addr));
4456                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4457                 if (wpa_s->p2p_auto_pd) {
4458                         wpa_s->p2p_auto_pd = 0;
4459                         wpa_msg_global(wpa_s, MSG_INFO,
4460                                        P2P_EVENT_PROV_DISC_FAILURE
4461                                        " p2p_dev_addr=" MACSTR " status=N/A",
4462                                        MAC2STR(wpa_s->pending_join_dev_addr));
4463                         return;
4464                 }
4465                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4466                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4467                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4468         }
4469 }
4470
4471
4472 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4473 {
4474         int res;
4475         unsigned int num, i;
4476         struct wpa_used_freq_data *freqs;
4477
4478         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4479                 /* Multiple channels are supported and not all are in use */
4480                 return 0;
4481         }
4482
4483         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4484                           sizeof(struct wpa_used_freq_data));
4485         if (!freqs)
4486                 return 1;
4487
4488         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4489                                         wpa_s->num_multichan_concurrent);
4490
4491         for (i = 0; i < num; i++) {
4492                 if (freqs[i].freq == freq) {
4493                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4494                                    freq);
4495                         res = 0;
4496                         goto exit_free;
4497                 }
4498         }
4499
4500         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4501         res = 1;
4502
4503 exit_free:
4504         os_free(freqs);
4505         return res;
4506 }
4507
4508
4509 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4510                             const u8 *peer_dev_addr)
4511 {
4512         struct wpa_bss *bss;
4513         int updated;
4514
4515         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4516         if (bss == NULL)
4517                 return -1;
4518         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4519                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4520                            "last scan");
4521                 return 0;
4522         }
4523
4524         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4525                                     &bss->last_update);
4526         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4527                    "%ld.%06ld (%supdated in last scan)",
4528                    bss->last_update.sec, bss->last_update.usec,
4529                    updated ? "": "not ");
4530
4531         return updated;
4532 }
4533
4534
4535 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4536                                    struct wpa_scan_results *scan_res)
4537 {
4538         struct wpa_bss *bss = NULL;
4539         int freq;
4540         u8 iface_addr[ETH_ALEN];
4541
4542         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4543
4544         if (wpa_s->global->p2p_disabled)
4545                 return;
4546
4547         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4548                    scan_res ? (int) scan_res->num : -1,
4549                    wpa_s->p2p_auto_join ? "auto_" : "");
4550
4551         if (scan_res)
4552                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4553
4554         if (wpa_s->p2p_auto_pd) {
4555                 int join = wpas_p2p_peer_go(wpa_s,
4556                                             wpa_s->pending_join_dev_addr);
4557                 if (join == 0 &&
4558                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4559                         wpa_s->auto_pd_scan_retry++;
4560                         bss = wpa_bss_get_bssid_latest(
4561                                 wpa_s, wpa_s->pending_join_dev_addr);
4562                         if (bss) {
4563                                 freq = bss->freq;
4564                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4565                                            "the peer " MACSTR " at %d MHz",
4566                                            wpa_s->auto_pd_scan_retry,
4567                                            MAC2STR(wpa_s->
4568                                                    pending_join_dev_addr),
4569                                            freq);
4570                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4571                                 return;
4572                         }
4573                 }
4574
4575                 if (join < 0)
4576                         join = 0;
4577
4578                 wpa_s->p2p_auto_pd = 0;
4579                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4580                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4581                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4582                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4583                                       wpa_s->pending_join_dev_addr, NULL,
4584                                       wpa_s->pending_pd_config_methods, join,
4585                                       0, wpa_s->user_initiated_pd) < 0) {
4586                         wpa_s->p2p_auto_pd = 0;
4587                         wpa_msg_global(wpa_s, MSG_INFO,
4588                                        P2P_EVENT_PROV_DISC_FAILURE
4589                                        " p2p_dev_addr=" MACSTR " status=N/A",
4590                                        MAC2STR(wpa_s->pending_join_dev_addr));
4591                 }
4592                 return;
4593         }
4594
4595         if (wpa_s->p2p_auto_join) {
4596                 int join = wpas_p2p_peer_go(wpa_s,
4597                                             wpa_s->pending_join_dev_addr);
4598                 if (join < 0) {
4599                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4600                                    "running a GO -> use GO Negotiation");
4601                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4602                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4603                                        "reason=peer-not-running-GO");
4604                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4605                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4606                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4607                                          wpa_s->p2p_go_intent,
4608                                          wpa_s->p2p_connect_freq,
4609                                          wpa_s->p2p_persistent_id,
4610                                          wpa_s->p2p_pd_before_go_neg,
4611                                          wpa_s->p2p_go_ht40,
4612                                          wpa_s->p2p_go_vht);
4613                         return;
4614                 }
4615
4616                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4617                            "try to join the group", join ? "" :
4618                            " in older scan");
4619                 if (!join) {
4620                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4621                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4622                         wpa_s->p2p_fallback_to_go_neg = 1;
4623                 }
4624         }
4625
4626         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4627                                  wpa_s->pending_join_iface_addr);
4628         if (freq < 0 &&
4629             p2p_get_interface_addr(wpa_s->global->p2p,
4630                                    wpa_s->pending_join_dev_addr,
4631                                    iface_addr) == 0 &&
4632             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4633             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4634                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4635                            "address for join from " MACSTR " to " MACSTR
4636                            " based on newly discovered P2P peer entry",
4637                            MAC2STR(wpa_s->pending_join_iface_addr),
4638                            MAC2STR(iface_addr));
4639                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4640                           ETH_ALEN);
4641
4642                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4643                                          wpa_s->pending_join_iface_addr);
4644         }
4645         if (freq >= 0) {
4646                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4647                            "from P2P peer table: %d MHz", freq);
4648         }
4649         if (wpa_s->p2p_join_ssid_len) {
4650                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4651                            MACSTR " and SSID %s",
4652                            MAC2STR(wpa_s->pending_join_iface_addr),
4653                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4654                                         wpa_s->p2p_join_ssid_len));
4655                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4656                                   wpa_s->p2p_join_ssid,
4657                                   wpa_s->p2p_join_ssid_len);
4658         }
4659         if (!bss) {
4660                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4661                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4662                 bss = wpa_bss_get_bssid_latest(wpa_s,
4663                                                wpa_s->pending_join_iface_addr);
4664         }
4665         if (bss) {
4666                 u8 dev_addr[ETH_ALEN];
4667
4668                 freq = bss->freq;
4669                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4670                            "from BSS table: %d MHz (SSID %s)", freq,
4671                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4672                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4673                                        dev_addr) == 0 &&
4674                     os_memcmp(wpa_s->pending_join_dev_addr,
4675                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4676                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4677                               ETH_ALEN) != 0) {
4678                         wpa_printf(MSG_DEBUG,
4679                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4680                                    MAC2STR(dev_addr),
4681                                    MAC2STR(wpa_s->pending_join_dev_addr));
4682                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4683                                   ETH_ALEN);
4684                 }
4685         }
4686         if (freq > 0) {
4687                 u16 method;
4688
4689                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4690                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4691                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4692                                        "reason=FREQ_CONFLICT");
4693                         wpas_notify_p2p_group_formation_failure(
4694                                 wpa_s, "FREQ_CONFLICT");
4695                         return;
4696                 }
4697
4698                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4699                            "prior to joining an existing group (GO " MACSTR
4700                            " freq=%u MHz)",
4701                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4702                 wpa_s->pending_pd_before_join = 1;
4703
4704                 switch (wpa_s->pending_join_wps_method) {
4705                 case WPS_PIN_DISPLAY:
4706                         method = WPS_CONFIG_KEYPAD;
4707                         break;
4708                 case WPS_PIN_KEYPAD:
4709                         method = WPS_CONFIG_DISPLAY;
4710                         break;
4711                 case WPS_PBC:
4712                         method = WPS_CONFIG_PUSHBUTTON;
4713                         break;
4714                 case WPS_P2PS:
4715                         method = WPS_CONFIG_P2PS;
4716                         break;
4717                 default:
4718                         method = 0;
4719                         break;
4720                 }
4721
4722                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4723                                                wpa_s->pending_join_dev_addr) ==
4724                      method)) {
4725                         /*
4726                          * We have already performed provision discovery for
4727                          * joining the group. Proceed directly to join
4728                          * operation without duplicated provision discovery. */
4729                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4730                                    "with " MACSTR " already done - proceed to "
4731                                    "join",
4732                                    MAC2STR(wpa_s->pending_join_dev_addr));
4733                         wpa_s->pending_pd_before_join = 0;
4734                         goto start;
4735                 }
4736
4737                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4738                                       wpa_s->pending_join_dev_addr,
4739                                       NULL, method, 1,
4740                                       freq, wpa_s->user_initiated_pd) < 0) {
4741                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4742                                    "Discovery Request before joining an "
4743                                    "existing group");
4744                         wpa_s->pending_pd_before_join = 0;
4745                         goto start;
4746                 }
4747                 return;
4748         }
4749
4750         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4751         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4752         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4753         wpas_p2p_check_join_scan_limit(wpa_s);
4754         return;
4755
4756 start:
4757         /* Start join operation immediately */
4758         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4759 }
4760
4761
4762 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4763                                    const u8 *ssid, size_t ssid_len)
4764 {
4765         int ret;
4766         struct wpa_driver_scan_params params;
4767         struct wpabuf *wps_ie, *ies;
4768         size_t ielen;
4769         int freqs[2] = { 0, 0 };
4770
4771         os_memset(&params, 0, sizeof(params));
4772
4773         /* P2P Wildcard SSID */
4774         params.num_ssids = 1;
4775         if (ssid && ssid_len) {
4776                 params.ssids[0].ssid = ssid;
4777                 params.ssids[0].ssid_len = ssid_len;
4778                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4779                 wpa_s->p2p_join_ssid_len = ssid_len;
4780         } else {
4781                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4782                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4783                 wpa_s->p2p_join_ssid_len = 0;
4784         }
4785
4786         wpa_s->wps->dev.p2p = 1;
4787         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4788                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4789                                         NULL);
4790         if (wps_ie == NULL) {
4791                 wpas_p2p_scan_res_join(wpa_s, NULL);
4792                 return;
4793         }
4794
4795         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4796         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4797         if (ies == NULL) {
4798                 wpabuf_free(wps_ie);
4799                 wpas_p2p_scan_res_join(wpa_s, NULL);
4800                 return;
4801         }
4802         wpabuf_put_buf(ies, wps_ie);
4803         wpabuf_free(wps_ie);
4804
4805         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4806
4807         params.p2p_probe = 1;
4808         params.extra_ies = wpabuf_head(ies);
4809         params.extra_ies_len = wpabuf_len(ies);
4810
4811         if (!freq) {
4812                 int oper_freq;
4813                 /*
4814                  * If freq is not provided, check the operating freq of the GO
4815                  * and use a single channel scan on if possible.
4816                  */
4817                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4818                                               wpa_s->pending_join_iface_addr);
4819                 if (oper_freq > 0)
4820                         freq = oper_freq;
4821         }
4822         if (freq > 0) {
4823                 freqs[0] = freq;
4824                 params.freqs = freqs;
4825         }
4826
4827         /*
4828          * Run a scan to update BSS table and start Provision Discovery once
4829          * the new scan results become available.
4830          */
4831         ret = wpa_drv_scan(wpa_s, &params);
4832         if (!ret) {
4833                 os_get_reltime(&wpa_s->scan_trigger_time);
4834                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4835                 wpa_s->own_scan_requested = 1;
4836         }
4837
4838         wpabuf_free(ies);
4839
4840         if (ret) {
4841                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4842                            "try again later");
4843                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4844                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4845                 wpas_p2p_check_join_scan_limit(wpa_s);
4846         }
4847 }
4848
4849
4850 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4851 {
4852         struct wpa_supplicant *wpa_s = eloop_ctx;
4853         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4854 }
4855
4856
4857 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4858                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4859                          int auto_join, int op_freq,
4860                          const u8 *ssid, size_t ssid_len)
4861 {
4862         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4863                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4864                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4865                    auto_join ? " (auto_join)" : "");
4866         if (ssid && ssid_len) {
4867                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4868                            wpa_ssid_txt(ssid, ssid_len));
4869         }
4870
4871         wpa_s->p2p_auto_pd = 0;
4872         wpa_s->p2p_auto_join = !!auto_join;
4873         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4874         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4875         wpa_s->pending_join_wps_method = wps_method;
4876
4877         /* Make sure we are not running find during connection establishment */
4878         wpas_p2p_stop_find(wpa_s);
4879
4880         wpa_s->p2p_join_scan_count = 0;
4881         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4882         return 0;
4883 }
4884
4885
4886 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4887                                const u8 *ssid, size_t ssid_len)
4888 {
4889         struct wpa_supplicant *group;
4890         struct p2p_go_neg_results res;
4891         struct wpa_bss *bss;
4892
4893         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4894         if (group == NULL)
4895                 return -1;
4896         if (group != wpa_s) {
4897                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4898                           sizeof(group->p2p_pin));
4899                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4900         } else {
4901                 /*
4902                  * Need to mark the current interface for p2p_group_formation
4903                  * when a separate group interface is not used. This is needed
4904                  * to allow p2p_cancel stop a pending p2p_connect-join.
4905                  * wpas_p2p_init_group_interface() addresses this for the case
4906                  * where a separate group interface is used.
4907                  */
4908                 wpa_s->global->p2p_group_formation = wpa_s;
4909         }
4910
4911         group->p2p_in_provisioning = 1;
4912         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4913
4914         os_memset(&res, 0, sizeof(res));
4915         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4916         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4917                   ETH_ALEN);
4918         res.wps_method = wpa_s->pending_join_wps_method;
4919         if (freq && ssid && ssid_len) {
4920                 res.freq = freq;
4921                 res.ssid_len = ssid_len;
4922                 os_memcpy(res.ssid, ssid, ssid_len);
4923         } else {
4924                 bss = wpa_bss_get_bssid_latest(wpa_s,
4925                                                wpa_s->pending_join_iface_addr);
4926                 if (bss) {
4927                         res.freq = bss->freq;
4928                         res.ssid_len = bss->ssid_len;
4929                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4930                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4931                                    bss->freq,
4932                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
4933                 }
4934         }
4935
4936         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4937                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4938                            "starting client");
4939                 wpa_drv_cancel_remain_on_channel(wpa_s);
4940                 wpa_s->off_channel_freq = 0;
4941                 wpa_s->roc_waiting_drv_freq = 0;
4942         }
4943         wpas_start_wps_enrollee(group, &res);
4944
4945         /*
4946          * Allow a longer timeout for join-a-running-group than normal 15
4947          * second group formation timeout since the GO may not have authorized
4948          * our connection yet.
4949          */
4950         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4951         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4952                                wpa_s, NULL);
4953
4954         return 0;
4955 }
4956
4957
4958 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4959                                 int *force_freq, int *pref_freq, int go,
4960                                 unsigned int *pref_freq_list,
4961                                 unsigned int *num_pref_freq)
4962 {
4963         struct wpa_used_freq_data *freqs;
4964         int res, best_freq, num_unused;
4965         unsigned int freq_in_use = 0, num, i, max_pref_freq;
4966
4967         max_pref_freq = *num_pref_freq;
4968         *num_pref_freq = 0;
4969
4970         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4971                           sizeof(struct wpa_used_freq_data));
4972         if (!freqs)
4973                 return -1;
4974
4975         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4976                                         wpa_s->num_multichan_concurrent);
4977
4978         /*
4979          * It is possible that the total number of used frequencies is bigger
4980          * than the number of frequencies used for P2P, so get the system wide
4981          * number of unused frequencies.
4982          */
4983         num_unused = wpas_p2p_num_unused_channels(wpa_s);
4984
4985         wpa_printf(MSG_DEBUG,
4986                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
4987                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
4988
4989         if (freq > 0) {
4990                 int ret;
4991                 if (go)
4992                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4993                 else
4994                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4995                 if (!ret) {
4996                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
4997                             ieee80211_is_dfs(freq)) {
4998                                 /*
4999                                  * If freq is a DFS channel and DFS is offloaded
5000                                  * to the driver, allow P2P GO to use it.
5001                                  */
5002                                 wpa_printf(MSG_DEBUG,
5003                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5004                                            freq);
5005                         } else {
5006                                 wpa_printf(MSG_DEBUG,
5007                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5008                                            freq);
5009                                 res = -3;
5010                                 goto exit_free;
5011                         }
5012                 }
5013
5014                 for (i = 0; i < num; i++) {
5015                         if (freqs[i].freq == freq)
5016                                 freq_in_use = 1;
5017                 }
5018
5019                 if (num_unused <= 0 && !freq_in_use) {
5020                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5021                                    freq);
5022                         res = -2;
5023                         goto exit_free;
5024                 }
5025                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5026                            "requested channel (%u MHz)", freq);
5027                 *force_freq = freq;
5028                 goto exit_ok;
5029         }
5030
5031         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5032
5033         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5034                 enum wpa_driver_if_type iface_type;
5035
5036                 if (go)
5037                         iface_type = WPA_IF_P2P_GO;
5038                 else
5039                         iface_type = WPA_IF_P2P_CLIENT;
5040
5041                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5042                            best_freq, go);
5043
5044                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5045                                                  &max_pref_freq,
5046                                                  pref_freq_list);
5047                 if (!res && max_pref_freq > 0) {
5048                         *num_pref_freq = max_pref_freq;
5049                         i = 0;
5050                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5051                                                         pref_freq_list[i]) &&
5052                                i < *num_pref_freq) {
5053                                 wpa_printf(MSG_DEBUG,
5054                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5055                                            i, pref_freq_list[i]);
5056                                 i++;
5057                         }
5058                         if (i != *num_pref_freq) {
5059                                 best_freq = pref_freq_list[i];
5060                                 wpa_printf(MSG_DEBUG,
5061                                            "P2P: Using preferred_freq_list[%d]=%d",
5062                                            i, best_freq);
5063                         } else {
5064                                 wpa_printf(MSG_DEBUG,
5065                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5066                                 *num_pref_freq = 0;
5067                         }
5068                 } else {
5069                         wpa_printf(MSG_DEBUG,
5070                                    "P2P: No preferred frequency list available");
5071                 }
5072         }
5073
5074         /* We have a candidate frequency to use */
5075         if (best_freq > 0) {
5076                 if (*pref_freq == 0 && num_unused > 0) {
5077                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5078                                    best_freq);
5079                         *pref_freq = best_freq;
5080                 } else {
5081                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5082                                    best_freq);
5083                         *force_freq = best_freq;
5084                 }
5085         } else if (num_unused > 0) {
5086                 wpa_printf(MSG_DEBUG,
5087                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5088                 *force_freq = 0;
5089         } else {
5090                 wpa_printf(MSG_DEBUG,
5091                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5092                 res = -2;
5093                 goto exit_free;
5094         }
5095
5096 exit_ok:
5097         res = 0;
5098 exit_free:
5099         os_free(freqs);
5100         return res;
5101 }
5102
5103
5104 /**
5105  * wpas_p2p_connect - Request P2P Group Formation to be started
5106  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5107  * @peer_addr: Address of the peer P2P Device
5108  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5109  * @persistent_group: Whether to create a persistent group
5110  * @auto_join: Whether to select join vs. GO Negotiation automatically
5111  * @join: Whether to join an existing group (as a client) instead of starting
5112  *      Group Owner negotiation; @peer_addr is BSSID in that case
5113  * @auth: Whether to only authorize the connection instead of doing that and
5114  *      initiating Group Owner negotiation
5115  * @go_intent: GO Intent or -1 to use default
5116  * @freq: Frequency for the group or 0 for auto-selection
5117  * @persistent_id: Persistent group credentials to use for forcing GO
5118  *      parameters or -1 to generate new values (SSID/passphrase)
5119  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5120  *      interoperability workaround when initiating group formation
5121  * @ht40: Start GO with 40 MHz channel width
5122  * @vht:  Start GO with VHT support
5123  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5124  *      failure, -2 on failure due to channel not currently available,
5125  *      -3 if forced channel is not supported
5126  */
5127 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5128                      const char *pin, enum p2p_wps_method wps_method,
5129                      int persistent_group, int auto_join, int join, int auth,
5130                      int go_intent, int freq, int persistent_id, int pd,
5131                      int ht40, int vht)
5132 {
5133         int force_freq = 0, pref_freq = 0;
5134         int ret = 0, res;
5135         enum wpa_driver_if_type iftype;
5136         const u8 *if_addr;
5137         struct wpa_ssid *ssid = NULL;
5138         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5139
5140         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5141                 return -1;
5142
5143         if (persistent_id >= 0) {
5144                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5145                 if (ssid == NULL || ssid->disabled != 2 ||
5146                     ssid->mode != WPAS_MODE_P2P_GO)
5147                         return -1;
5148         }
5149
5150         os_free(wpa_s->global->add_psk);
5151         wpa_s->global->add_psk = NULL;
5152
5153         wpa_s->global->p2p_fail_on_wps_complete = 0;
5154         wpa_s->global->pending_p2ps_group = 0;
5155         wpa_s->p2ps_method_config_any = 0;
5156
5157         if (go_intent < 0)
5158                 go_intent = wpa_s->conf->p2p_go_intent;
5159
5160         if (!auth)
5161                 wpa_s->p2p_long_listen = 0;
5162
5163         wpa_s->p2p_wps_method = wps_method;
5164         wpa_s->p2p_persistent_group = !!persistent_group;
5165         wpa_s->p2p_persistent_id = persistent_id;
5166         wpa_s->p2p_go_intent = go_intent;
5167         wpa_s->p2p_connect_freq = freq;
5168         wpa_s->p2p_fallback_to_go_neg = 0;
5169         wpa_s->p2p_pd_before_go_neg = !!pd;
5170         wpa_s->p2p_go_ht40 = !!ht40;
5171         wpa_s->p2p_go_vht = !!vht;
5172
5173         if (pin)
5174                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5175         else if (wps_method == WPS_PIN_DISPLAY) {
5176                 ret = wps_generate_pin();
5177                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5178                                   "%08d", ret);
5179                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5180                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5181                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5182                            wpa_s->p2p_pin);
5183         } else
5184                 wpa_s->p2p_pin[0] = '\0';
5185
5186         if (join || auto_join) {
5187                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5188                 if (auth) {
5189                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5190                                    "connect a running group from " MACSTR,
5191                                    MAC2STR(peer_addr));
5192                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5193                         return ret;
5194                 }
5195                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5196                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5197                                            iface_addr) < 0) {
5198                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5199                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5200                                          dev_addr);
5201                 }
5202                 if (auto_join) {
5203                         os_get_reltime(&wpa_s->p2p_auto_started);
5204                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5205                                    "%ld.%06ld",
5206                                    wpa_s->p2p_auto_started.sec,
5207                                    wpa_s->p2p_auto_started.usec);
5208                 }
5209                 wpa_s->user_initiated_pd = 1;
5210                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5211                                   auto_join, freq, NULL, 0) < 0)
5212                         return -1;
5213                 return ret;
5214         }
5215
5216         size = P2P_MAX_PREF_CHANNELS;
5217         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5218                                    go_intent == 15, pref_freq_list, &size);
5219         if (res)
5220                 return res;
5221         wpas_p2p_set_own_freq_preference(wpa_s,
5222                                          force_freq ? force_freq : pref_freq);
5223
5224         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5225
5226         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5227
5228         if (wpa_s->create_p2p_iface) {
5229                 /* Prepare to add a new interface for the group */
5230                 iftype = WPA_IF_P2P_GROUP;
5231                 if (go_intent == 15)
5232                         iftype = WPA_IF_P2P_GO;
5233                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5234                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5235                                    "interface for the group");
5236                         return -1;
5237                 }
5238
5239                 if_addr = wpa_s->pending_interface_addr;
5240         } else {
5241                 if_addr = wpa_s->own_addr;
5242                 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5243         }
5244
5245         if (auth) {
5246                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5247                                          go_intent, if_addr,
5248                                          force_freq, persistent_group, ssid,
5249                                          pref_freq) < 0)
5250                         return -1;
5251                 return ret;
5252         }
5253
5254         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5255                                   go_intent, if_addr, force_freq,
5256                                   persistent_group, ssid, pref_freq) < 0) {
5257                 if (wpa_s->create_p2p_iface)
5258                         wpas_p2p_remove_pending_group_interface(wpa_s);
5259                 return -1;
5260         }
5261         return ret;
5262 }
5263
5264
5265 /**
5266  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5267  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5268  * @freq: Frequency of the channel in MHz
5269  * @duration: Duration of the stay on the channel in milliseconds
5270  *
5271  * This callback is called when the driver indicates that it has started the
5272  * requested remain-on-channel duration.
5273  */
5274 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5275                                    unsigned int freq, unsigned int duration)
5276 {
5277         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5278                 return;
5279         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)",
5280                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5281                    wpa_s->roc_waiting_drv_freq, freq, duration);
5282         if (wpa_s->off_channel_freq &&
5283             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5284                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5285                               wpa_s->pending_listen_duration);
5286                 wpa_s->pending_listen_freq = 0;
5287         } else {
5288                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5289                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5290                            freq, duration);
5291         }
5292 }
5293
5294
5295 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5296 {
5297         /* Limit maximum Listen state time based on driver limitation. */
5298         if (timeout > wpa_s->max_remain_on_chan)
5299                 timeout = wpa_s->max_remain_on_chan;
5300
5301         return p2p_listen(wpa_s->global->p2p, timeout);
5302 }
5303
5304
5305 /**
5306  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5307  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5308  * @freq: Frequency of the channel in MHz
5309  *
5310  * This callback is called when the driver indicates that a remain-on-channel
5311  * operation has been completed, i.e., the duration on the requested channel
5312  * has timed out.
5313  */
5314 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5315                                           unsigned int freq)
5316 {
5317         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5318                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5319                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5320         wpas_p2p_listen_work_done(wpa_s);
5321         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5322                 return;
5323         if (wpa_s->p2p_long_listen > 0)
5324                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5325         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5326                 return; /* P2P module started a new operation */
5327         if (offchannel_pending_action_tx(wpa_s))
5328                 return;
5329         if (wpa_s->p2p_long_listen > 0) {
5330                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5331                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5332         } else {
5333                 /*
5334                  * When listen duration is over, stop listen & update p2p_state
5335                  * to IDLE.
5336                  */
5337                 p2p_stop_listen(wpa_s->global->p2p);
5338         }
5339 }
5340
5341
5342 /**
5343  * wpas_p2p_group_remove - Remove a P2P group
5344  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5345  * @ifname: Network interface name of the group interface or "*" to remove all
5346  *      groups
5347  * Returns: 0 on success, -1 on failure
5348  *
5349  * This function is used to remove a P2P group. This can be used to disconnect
5350  * from a group in which the local end is a P2P Client or to end a P2P Group in
5351  * case the local end is the Group Owner. If a virtual network interface was
5352  * created for this group, that interface will be removed. Otherwise, only the
5353  * configured P2P group network will be removed from the interface.
5354  */
5355 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5356 {
5357         struct wpa_global *global = wpa_s->global;
5358         struct wpa_supplicant *calling_wpa_s = wpa_s;
5359
5360         if (os_strcmp(ifname, "*") == 0) {
5361                 struct wpa_supplicant *prev;
5362                 wpa_s = global->ifaces;
5363                 while (wpa_s) {
5364                         prev = wpa_s;
5365                         wpa_s = wpa_s->next;
5366                         if (prev->p2p_group_interface !=
5367                             NOT_P2P_GROUP_INTERFACE ||
5368                             (prev->current_ssid &&
5369                              prev->current_ssid->p2p_group))
5370                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5371                 }
5372                 return 0;
5373         }
5374
5375         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5376                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5377                         break;
5378         }
5379
5380         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5381 }
5382
5383
5384 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5385 {
5386         unsigned int r;
5387
5388         if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5389                 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5390                 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5391                 int res;
5392
5393                 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5394                                                  &size, pref_freq_list);
5395                 if (!res && size > 0) {
5396                         i = 0;
5397                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5398                                                         pref_freq_list[i]) &&
5399                                i < size) {
5400                                 wpa_printf(MSG_DEBUG,
5401                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5402                                            i, pref_freq_list[i]);
5403                                 i++;
5404                         }
5405                         if (i != size) {
5406                                 freq = pref_freq_list[i];
5407                                 wpa_printf(MSG_DEBUG,
5408                                            "P2P: Using preferred_freq_list[%d]=%d",
5409                                            i, freq);
5410                         } else {
5411                                 wpa_printf(MSG_DEBUG,
5412                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5413                         }
5414                 } else {
5415                         wpa_printf(MSG_DEBUG,
5416                                    "P2P: No preferred frequency list available");
5417                 }
5418         }
5419
5420         if (freq == 2) {
5421                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5422                            "band");
5423                 if (wpa_s->best_24_freq > 0 &&
5424                     p2p_supported_freq_go(wpa_s->global->p2p,
5425                                           wpa_s->best_24_freq)) {
5426                         freq = wpa_s->best_24_freq;
5427                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5428                                    "channel: %d MHz", freq);
5429                 } else {
5430                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5431                                 return -1;
5432                         freq = 2412 + (r % 3) * 25;
5433                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5434                                    "channel: %d MHz", freq);
5435                 }
5436         }
5437
5438         if (freq == 5) {
5439                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5440                            "band");
5441                 if (wpa_s->best_5_freq > 0 &&
5442                     p2p_supported_freq_go(wpa_s->global->p2p,
5443                                        wpa_s->best_5_freq)) {
5444                         freq = wpa_s->best_5_freq;
5445                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5446                                    "channel: %d MHz", freq);
5447                 } else {
5448                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5449                                 return -1;
5450                         freq = 5180 + (r % 4) * 20;
5451                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5452                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5453                                            "5 GHz channel for P2P group");
5454                                 return -1;
5455                         }
5456                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5457                                    "channel: %d MHz", freq);
5458                 }
5459         }
5460
5461         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5462                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5463                     ieee80211_is_dfs(freq)) {
5464                         /*
5465                          * If freq is a DFS channel and DFS is offloaded to the
5466                          * driver, allow P2P GO to use it.
5467                          */
5468                         wpa_printf(MSG_DEBUG, "P2P: "
5469                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5470                                    __func__, freq);
5471                         return freq;
5472                 }
5473                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5474                            "(%u MHz) is not supported for P2P uses",
5475                            freq);
5476                 return -1;
5477         }
5478
5479         return freq;
5480 }
5481
5482
5483 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5484                                       const struct p2p_channels *channels,
5485                                       int freq)
5486 {
5487         if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5488             p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5489             freq_included(wpa_s, channels, freq))
5490                 return 1;
5491         return 0;
5492 }
5493
5494
5495 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5496                                             struct p2p_go_neg_results *params,
5497                                             const struct p2p_channels *channels)
5498 {
5499         unsigned int i, r;
5500
5501         /* first try some random selection of the social channels */
5502         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5503                 return;
5504
5505         for (i = 0; i < 3; i++) {
5506                 params->freq = 2412 + ((r + i) % 3) * 25;
5507                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5508                         goto out;
5509         }
5510
5511         /* try all other channels in operating class 81 */
5512         for (i = 0; i < 11; i++) {
5513                 params->freq = 2412 + i * 5;
5514
5515                 /* skip social channels; covered in the previous loop */
5516                 if (params->freq == 2412 ||
5517                     params->freq == 2437 ||
5518                     params->freq == 2462)
5519                         continue;
5520
5521                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5522                         goto out;
5523         }
5524
5525         /* try all channels in operating class 115 */
5526         for (i = 0; i < 4; i++) {
5527                 params->freq = 5180 + i * 20;
5528                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5529                     freq_included(wpa_s, channels, params->freq) &&
5530                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5531                         goto out;
5532         }
5533
5534         /* try all channels in operating class 124 */
5535         for (i = 0; i < 4; i++) {
5536                 params->freq = 5745 + i * 20;
5537                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5538                     freq_included(wpa_s, channels, params->freq) &&
5539                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5540                         goto out;
5541         }
5542
5543         /* try social channel class 180 channel 2 */
5544         params->freq = 58320 + 1 * 2160;
5545         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5546             freq_included(wpa_s, channels, params->freq) &&
5547             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5548                 goto out;
5549
5550         /* try all channels in reg. class 180 */
5551         for (i = 0; i < 4; i++) {
5552                 params->freq = 58320 + i * 2160;
5553                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5554                     freq_included(wpa_s, channels, params->freq) &&
5555                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5556                         goto out;
5557         }
5558
5559         params->freq = 0;
5560         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5561         return;
5562 out:
5563         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5564                    params->freq);
5565 }
5566
5567
5568 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5569                                    struct p2p_go_neg_results *params,
5570                                    int freq, int ht40, int vht,
5571                                    const struct p2p_channels *channels)
5572 {
5573         struct wpa_used_freq_data *freqs;
5574         unsigned int cand;
5575         unsigned int num, i;
5576         int ignore_no_freqs = 0;
5577
5578         os_memset(params, 0, sizeof(*params));
5579         params->role_go = 1;
5580         params->ht40 = ht40;
5581         params->vht = vht;
5582
5583         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5584                           sizeof(struct wpa_used_freq_data));
5585         if (!freqs)
5586                 return -1;
5587
5588         num = get_shared_radio_freqs_data(wpa_s, freqs,
5589                                           wpa_s->num_multichan_concurrent);
5590
5591         if (wpa_s->current_ssid &&
5592             wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5593             wpa_s->wpa_state == WPA_COMPLETED) {
5594                 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5595                            __func__);
5596
5597                 /*
5598                  * If the frequency selection is done for an active P2P GO that
5599                  * is not sharing a frequency, allow to select a new frequency
5600                  * even if there are no unused frequencies as we are about to
5601                  * move the P2P GO so its frequency can be re-used.
5602                  */
5603                 for (i = 0; i < num; i++) {
5604                         if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5605                             freqs[i].flags == 0) {
5606                                 ignore_no_freqs = 1;
5607                                 break;
5608                         }
5609                 }
5610         }
5611
5612         /* try using the forced freq */
5613         if (freq) {
5614                 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) {
5615                         wpa_printf(MSG_DEBUG,
5616                                    "P2P: Forced GO freq %d MHz not accepted",
5617                                    freq);
5618                         goto fail;
5619                 }
5620
5621                 for (i = 0; i < num; i++) {
5622                         if (freqs[i].freq == freq) {
5623                                 wpa_printf(MSG_DEBUG,
5624                                            "P2P: forced freq (%d MHz) is also shared",
5625                                            freq);
5626                                 params->freq = freq;
5627                                 goto success;
5628                         }
5629                 }
5630
5631                 if (!ignore_no_freqs &&
5632                     wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5633                         wpa_printf(MSG_DEBUG,
5634                                    "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5635                                    freq);
5636                         goto fail;
5637                 }
5638
5639                 wpa_printf(MSG_DEBUG,
5640                            "P2P: force GO freq (%d MHz) on a free channel",
5641                            freq);
5642                 params->freq = freq;
5643                 goto success;
5644         }
5645
5646         /* consider using one of the shared frequencies */
5647         if (num) {
5648                 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5649                 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5650                         wpa_printf(MSG_DEBUG,
5651                                    "P2P: Use shared freq (%d MHz) for GO",
5652                                    freq);
5653                         params->freq = cand;
5654                         goto success;
5655                 }
5656
5657                 /* try using one of the shared freqs */
5658                 for (i = 0; i < num; i++) {
5659                         if (wpas_p2p_supported_freq_go(wpa_s, channels,
5660                                                        freqs[i].freq)) {
5661                                 wpa_printf(MSG_DEBUG,
5662                                            "P2P: Use shared freq (%d MHz) for GO",
5663                                            freq);
5664                                 params->freq = freqs[i].freq;
5665                                 goto success;
5666                         }
5667                 }
5668         }
5669
5670         if (!ignore_no_freqs &&
5671             wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5672                 wpa_printf(MSG_DEBUG,
5673                            "P2P: Cannot force GO on any of the channels we are already using");
5674                 goto fail;
5675         }
5676
5677         /* try using the setting from the configuration file */
5678         if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5679             wpa_s->conf->p2p_oper_channel >= 1 &&
5680             wpa_s->conf->p2p_oper_channel <= 11 &&
5681             wpas_p2p_supported_freq_go(
5682                     wpa_s, channels,
5683                     2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5684                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5685                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5686                            "frequency %d MHz", params->freq);
5687                 goto success;
5688         }
5689
5690         if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5691              wpa_s->conf->p2p_oper_reg_class == 116 ||
5692              wpa_s->conf->p2p_oper_reg_class == 117 ||
5693              wpa_s->conf->p2p_oper_reg_class == 124 ||
5694              wpa_s->conf->p2p_oper_reg_class == 125 ||
5695              wpa_s->conf->p2p_oper_reg_class == 126 ||
5696              wpa_s->conf->p2p_oper_reg_class == 127) &&
5697             wpas_p2p_supported_freq_go(wpa_s, channels,
5698                                        5000 +
5699                                        5 * wpa_s->conf->p2p_oper_channel)) {
5700                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5701                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5702                            "frequency %d MHz", params->freq);
5703                 goto success;
5704         }
5705
5706         /* Try using best channels */
5707         if (wpa_s->conf->p2p_oper_channel == 0 &&
5708             wpa_s->best_overall_freq > 0 &&
5709             wpas_p2p_supported_freq_go(wpa_s, channels,
5710                                        wpa_s->best_overall_freq)) {
5711                 params->freq = wpa_s->best_overall_freq;
5712                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5713                            "channel %d MHz", params->freq);
5714                 goto success;
5715         }
5716
5717         if (wpa_s->conf->p2p_oper_channel == 0 &&
5718             wpa_s->best_24_freq > 0 &&
5719             wpas_p2p_supported_freq_go(wpa_s, channels,
5720                                        wpa_s->best_24_freq)) {
5721                 params->freq = wpa_s->best_24_freq;
5722                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5723                            "channel %d MHz", params->freq);
5724                 goto success;
5725         }
5726
5727         if (wpa_s->conf->p2p_oper_channel == 0 &&
5728             wpa_s->best_5_freq > 0 &&
5729             wpas_p2p_supported_freq_go(wpa_s, channels,
5730                                        wpa_s->best_5_freq)) {
5731                 params->freq = wpa_s->best_5_freq;
5732                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5733                            "channel %d MHz", params->freq);
5734                 goto success;
5735         }
5736
5737         /* try using preferred channels */
5738         cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
5739         if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5740                 params->freq = cand;
5741                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5742                            "channels", params->freq);
5743                 goto success;
5744         }
5745
5746         /* Try using one of the group common freqs */
5747         if (wpa_s->p2p_group_common_freqs) {
5748                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
5749                         cand = wpa_s->p2p_group_common_freqs[i];
5750                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5751                                 params->freq = cand;
5752                                 wpa_printf(MSG_DEBUG,
5753                                            "P2P: Use freq %d MHz common with the peer",
5754                                            params->freq);
5755                                 goto success;
5756                         }
5757                 }
5758         }
5759
5760         /* no preference, select some channel */
5761         wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
5762
5763         if (params->freq == 0) {
5764                 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
5765                 goto fail;
5766         }
5767
5768 success:
5769         os_free(freqs);
5770         return 0;
5771 fail:
5772         os_free(freqs);
5773         return -1;
5774 }
5775
5776
5777 static struct wpa_supplicant *
5778 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5779                          int go)
5780 {
5781         struct wpa_supplicant *group_wpa_s;
5782
5783         if (!wpas_p2p_create_iface(wpa_s)) {
5784                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5785                         "operations");
5786                 wpa_s->p2p_first_connection_timeout = 0;
5787                 return wpa_s;
5788         }
5789
5790         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5791                                          WPA_IF_P2P_CLIENT) < 0) {
5792                 wpa_msg_global(wpa_s, MSG_ERROR,
5793                                "P2P: Failed to add group interface");
5794                 return NULL;
5795         }
5796         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5797         if (group_wpa_s == NULL) {
5798                 wpa_msg_global(wpa_s, MSG_ERROR,
5799                                "P2P: Failed to initialize group interface");
5800                 wpas_p2p_remove_pending_group_interface(wpa_s);
5801                 return NULL;
5802         }
5803
5804         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5805                 group_wpa_s->ifname);
5806         group_wpa_s->p2p_first_connection_timeout = 0;
5807         return group_wpa_s;
5808 }
5809
5810
5811 /**
5812  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5813  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5814  * @persistent_group: Whether to create a persistent group
5815  * @freq: Frequency for the group or 0 to indicate no hardcoding
5816  * @ht40: Start GO with 40 MHz channel width
5817  * @vht:  Start GO with VHT support
5818  * Returns: 0 on success, -1 on failure
5819  *
5820  * This function creates a new P2P group with the local end as the Group Owner,
5821  * i.e., without using Group Owner Negotiation.
5822  */
5823 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5824                        int freq, int ht40, int vht)
5825 {
5826         struct p2p_go_neg_results params;
5827
5828         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5829                 return -1;
5830
5831         os_free(wpa_s->global->add_psk);
5832         wpa_s->global->add_psk = NULL;
5833
5834         /* Make sure we are not running find during connection establishment */
5835         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5836         wpas_p2p_stop_find_oper(wpa_s);
5837
5838         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5839         if (freq < 0)
5840                 return -1;
5841
5842         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5843                 return -1;
5844         if (params.freq &&
5845             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5846                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5847                     ieee80211_is_dfs(params.freq)) {
5848                         /*
5849                          * If freq is a DFS channel and DFS is offloaded to the
5850                          * driver, allow P2P GO to use it.
5851                          */
5852                         wpa_printf(MSG_DEBUG,
5853                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
5854                                 __func__, params.freq);
5855                 } else {
5856                         wpa_printf(MSG_DEBUG,
5857                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
5858                                    params.freq);
5859                         return -1;
5860                 }
5861         }
5862         p2p_go_params(wpa_s->global->p2p, &params);
5863         params.persistent_group = persistent_group;
5864
5865         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5866         if (wpa_s == NULL)
5867                 return -1;
5868         wpas_start_wps_go(wpa_s, &params, 0);
5869
5870         return 0;
5871 }
5872
5873
5874 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5875                                  struct wpa_ssid *params, int addr_allocated,
5876                                  int freq, int force_scan)
5877 {
5878         struct wpa_ssid *ssid;
5879
5880         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5881         if (wpa_s == NULL)
5882                 return -1;
5883         if (force_scan)
5884                 os_get_reltime(&wpa_s->scan_min_time);
5885         wpa_s->p2p_last_4way_hs_fail = NULL;
5886
5887         wpa_supplicant_ap_deinit(wpa_s);
5888
5889         ssid = wpa_config_add_network(wpa_s->conf);
5890         if (ssid == NULL)
5891                 return -1;
5892         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5893         wpa_config_set_network_defaults(ssid);
5894         ssid->temporary = 1;
5895         ssid->proto = WPA_PROTO_RSN;
5896         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5897         ssid->group_cipher = WPA_CIPHER_CCMP;
5898         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5899         ssid->ssid = os_malloc(params->ssid_len);
5900         if (ssid->ssid == NULL) {
5901                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5902                 return -1;
5903         }
5904         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5905         ssid->ssid_len = params->ssid_len;
5906         ssid->p2p_group = 1;
5907         ssid->export_keys = 1;
5908         if (params->psk_set) {
5909                 os_memcpy(ssid->psk, params->psk, 32);
5910                 ssid->psk_set = 1;
5911         }
5912         if (params->passphrase)
5913                 ssid->passphrase = os_strdup(params->passphrase);
5914
5915         wpa_s->show_group_started = 1;
5916         wpa_s->p2p_in_invitation = 1;
5917         wpa_s->p2p_invite_go_freq = freq;
5918
5919         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5920                              NULL);
5921         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5922                                wpas_p2p_group_formation_timeout,
5923                                wpa_s->parent, NULL);
5924         wpa_supplicant_select_network(wpa_s, ssid);
5925
5926         return 0;
5927 }
5928
5929
5930 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5931                                   struct wpa_ssid *ssid, int addr_allocated,
5932                                   int force_freq, int neg_freq, int ht40,
5933                                   int vht, const struct p2p_channels *channels,
5934                                   int connection_timeout, int force_scan)
5935 {
5936         struct p2p_go_neg_results params;
5937         int go = 0, freq;
5938
5939         if (ssid->disabled != 2 || ssid->ssid == NULL)
5940                 return -1;
5941
5942         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5943             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5944                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5945                            "already running");
5946                 if (go == 0 &&
5947                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5948                                          wpa_s->parent, NULL)) {
5949                         /*
5950                          * This can happen if Invitation Response frame was lost
5951                          * and the peer (GO of a persistent group) tries to
5952                          * invite us again. Reschedule the timeout to avoid
5953                          * terminating the wait for the connection too early
5954                          * since we now know that the peer is still trying to
5955                          * invite us instead of having already started the GO.
5956                          */
5957                         wpa_printf(MSG_DEBUG,
5958                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
5959                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5960                                                wpas_p2p_group_formation_timeout,
5961                                                wpa_s->parent, NULL);
5962                 }
5963                 return 0;
5964         }
5965
5966         os_free(wpa_s->global->add_psk);
5967         wpa_s->global->add_psk = NULL;
5968
5969         /* Make sure we are not running find during connection establishment */
5970         wpas_p2p_stop_find_oper(wpa_s);
5971
5972         wpa_s->p2p_fallback_to_go_neg = 0;
5973
5974         if (ssid->mode == WPAS_MODE_P2P_GO) {
5975                 if (force_freq > 0) {
5976                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
5977                         if (freq < 0)
5978                                 return -1;
5979                 } else {
5980                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
5981                         if (freq < 0 ||
5982                             (freq > 0 && !freq_included(wpa_s, channels, freq)))
5983                                 freq = 0;
5984                 }
5985         } else if (ssid->mode == WPAS_MODE_INFRA) {
5986                 freq = neg_freq;
5987                 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
5988                         struct os_reltime now;
5989                         struct wpa_bss *bss =
5990                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
5991
5992                         os_get_reltime(&now);
5993                         if (bss &&
5994                             !os_reltime_expired(&now, &bss->last_update, 5) &&
5995                             freq_included(wpa_s, channels, bss->freq))
5996                                 freq = bss->freq;
5997                         else
5998                                 freq = 0;
5999                 }
6000
6001                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6002                                              force_scan);
6003         } else {
6004                 return -1;
6005         }
6006
6007         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
6008                 return -1;
6009
6010         params.role_go = 1;
6011         params.psk_set = ssid->psk_set;
6012         if (params.psk_set)
6013                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6014         if (ssid->passphrase) {
6015                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6016                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6017                                    "persistent group");
6018                         return -1;
6019                 }
6020                 os_strlcpy(params.passphrase, ssid->passphrase,
6021                            sizeof(params.passphrase));
6022         }
6023         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6024         params.ssid_len = ssid->ssid_len;
6025         params.persistent_group = 1;
6026
6027         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6028         if (wpa_s == NULL)
6029                 return -1;
6030
6031         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6032
6033         wpa_s->p2p_first_connection_timeout = connection_timeout;
6034         wpas_start_wps_go(wpa_s, &params, 0);
6035
6036         return 0;
6037 }
6038
6039
6040 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6041                                struct wpabuf *proberesp_ies)
6042 {
6043         struct wpa_supplicant *wpa_s = ctx;
6044         if (wpa_s->ap_iface) {
6045                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6046                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6047                         wpabuf_free(beacon_ies);
6048                         wpabuf_free(proberesp_ies);
6049                         return;
6050                 }
6051                 if (beacon_ies) {
6052                         wpabuf_free(hapd->p2p_beacon_ie);
6053                         hapd->p2p_beacon_ie = beacon_ies;
6054                 }
6055                 wpabuf_free(hapd->p2p_probe_resp_ie);
6056                 hapd->p2p_probe_resp_ie = proberesp_ies;
6057         } else {
6058                 wpabuf_free(beacon_ies);
6059                 wpabuf_free(proberesp_ies);
6060         }
6061         wpa_supplicant_ap_update_beacon(wpa_s);
6062 }
6063
6064
6065 static void wpas_p2p_idle_update(void *ctx, int idle)
6066 {
6067         struct wpa_supplicant *wpa_s = ctx;
6068         if (!wpa_s->ap_iface)
6069                 return;
6070         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6071         if (idle) {
6072                 if (wpa_s->global->p2p_fail_on_wps_complete &&
6073                     wpa_s->p2p_in_provisioning) {
6074                         wpas_p2p_grpform_fail_after_wps(wpa_s);
6075                         return;
6076                 }
6077                 wpas_p2p_set_group_idle_timeout(wpa_s);
6078         } else
6079                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6080 }
6081
6082
6083 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6084                                        struct wpa_ssid *ssid)
6085 {
6086         struct p2p_group *group;
6087         struct p2p_group_config *cfg;
6088
6089         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6090                 return NULL;
6091
6092         cfg = os_zalloc(sizeof(*cfg));
6093         if (cfg == NULL)
6094                 return NULL;
6095
6096         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6097                 cfg->persistent_group = 2;
6098         else if (ssid->p2p_persistent_group)
6099                 cfg->persistent_group = 1;
6100         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6101         if (wpa_s->max_stations &&
6102             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6103                 cfg->max_clients = wpa_s->max_stations;
6104         else
6105                 cfg->max_clients = wpa_s->conf->max_num_sta;
6106         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6107         cfg->ssid_len = ssid->ssid_len;
6108         cfg->freq = ssid->frequency;
6109         cfg->cb_ctx = wpa_s;
6110         cfg->ie_update = wpas_p2p_ie_update;
6111         cfg->idle_update = wpas_p2p_idle_update;
6112
6113         group = p2p_group_init(wpa_s->global->p2p, cfg);
6114         if (group == NULL)
6115                 os_free(cfg);
6116         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6117                 p2p_group_notif_formation_done(group);
6118         wpa_s->p2p_group = group;
6119         return group;
6120 }
6121
6122
6123 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6124                           int registrar)
6125 {
6126         struct wpa_ssid *ssid = wpa_s->current_ssid;
6127
6128         if (!wpa_s->p2p_in_provisioning) {
6129                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6130                            "provisioning not in progress");
6131                 return;
6132         }
6133
6134         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6135                 u8 go_dev_addr[ETH_ALEN];
6136                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6137                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6138                                           ssid->ssid_len);
6139                 /* Clear any stored provisioning info */
6140                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6141         }
6142
6143         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6144                              NULL);
6145         wpa_s->p2p_go_group_formation_completed = 1;
6146         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6147                 /*
6148                  * Use a separate timeout for initial data connection to
6149                  * complete to allow the group to be removed automatically if
6150                  * something goes wrong in this step before the P2P group idle
6151                  * timeout mechanism is taken into use.
6152                  */
6153                 wpa_dbg(wpa_s, MSG_DEBUG,
6154                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6155                         P2P_MAX_INITIAL_CONN_WAIT);
6156                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6157                                        wpas_p2p_group_formation_timeout,
6158                                        wpa_s->parent, NULL);
6159         } else if (ssid) {
6160                 /*
6161                  * Use a separate timeout for initial data connection to
6162                  * complete to allow the group to be removed automatically if
6163                  * the client does not complete data connection successfully.
6164                  */
6165                 wpa_dbg(wpa_s, MSG_DEBUG,
6166                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6167                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6168                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6169                                        wpas_p2p_group_formation_timeout,
6170                                        wpa_s->parent, NULL);
6171                 /*
6172                  * Complete group formation on first successful data connection
6173                  */
6174                 wpa_s->p2p_go_group_formation_completed = 0;
6175         }
6176         if (wpa_s->global->p2p)
6177                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6178         wpas_group_formation_completed(wpa_s, 1, 0);
6179 }
6180
6181
6182 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6183                          struct wps_event_fail *fail)
6184 {
6185         if (!wpa_s->p2p_in_provisioning) {
6186                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6187                            "provisioning not in progress");
6188                 return;
6189         }
6190
6191         if (wpa_s->go_params) {
6192                 p2p_clear_provisioning_info(
6193                         wpa_s->global->p2p,
6194                         wpa_s->go_params->peer_device_addr);
6195         }
6196
6197         wpas_notify_p2p_wps_failed(wpa_s, fail);
6198
6199         if (wpa_s == wpa_s->global->p2p_group_formation) {
6200                 /*
6201                  * Allow some time for the failed WPS negotiation exchange to
6202                  * complete, but remove the group since group formation cannot
6203                  * succeed after provisioning failure.
6204                  */
6205                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6206                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6207                 eloop_deplete_timeout(0, 50000,
6208                                       wpas_p2p_group_formation_timeout,
6209                                       wpa_s->parent, NULL);
6210         }
6211 }
6212
6213
6214 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6215 {
6216         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6217             !wpa_s->p2p_in_provisioning)
6218                 return 0;
6219
6220         wpas_p2p_grpform_fail_after_wps(wpa_s);
6221
6222         return 1;
6223 }
6224
6225
6226 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6227                        const char *config_method,
6228                        enum wpas_p2p_prov_disc_use use,
6229                        struct p2ps_provision *p2ps_prov)
6230 {
6231         u16 config_methods;
6232
6233         wpa_s->global->pending_p2ps_group = 0;
6234         wpa_s->p2p_fallback_to_go_neg = 0;
6235         wpa_s->pending_pd_use = NORMAL_PD;
6236         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6237                 p2ps_prov->conncap = p2ps_group_capability(
6238                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role);
6239                 wpa_printf(MSG_DEBUG,
6240                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6241                            __func__, p2ps_prov->conncap,
6242                            p2ps_prov->adv_id, p2ps_prov->conncap,
6243                            p2ps_prov->status, p2ps_prov->info);
6244
6245                 config_methods = 0;
6246         } else if (os_strncmp(config_method, "display", 7) == 0)
6247                 config_methods = WPS_CONFIG_DISPLAY;
6248         else if (os_strncmp(config_method, "keypad", 6) == 0)
6249                 config_methods = WPS_CONFIG_KEYPAD;
6250         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6251                  os_strncmp(config_method, "pushbutton", 10) == 0)
6252                 config_methods = WPS_CONFIG_PUSHBUTTON;
6253         else {
6254                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6255                 os_free(p2ps_prov);
6256                 return -1;
6257         }
6258
6259         if (use == WPAS_P2P_PD_AUTO) {
6260                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6261                 wpa_s->pending_pd_config_methods = config_methods;
6262                 wpa_s->p2p_auto_pd = 1;
6263                 wpa_s->p2p_auto_join = 0;
6264                 wpa_s->pending_pd_before_join = 0;
6265                 wpa_s->auto_pd_scan_retry = 0;
6266                 wpas_p2p_stop_find(wpa_s);
6267                 wpa_s->p2p_join_scan_count = 0;
6268                 os_get_reltime(&wpa_s->p2p_auto_started);
6269                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6270                            wpa_s->p2p_auto_started.sec,
6271                            wpa_s->p2p_auto_started.usec);
6272                 wpas_p2p_join_scan(wpa_s, NULL);
6273                 return 0;
6274         }
6275
6276         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6277                 os_free(p2ps_prov);
6278                 return -1;
6279         }
6280
6281         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6282                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6283                                  0, 1);
6284 }
6285
6286
6287 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6288                               char *end)
6289 {
6290         return p2p_scan_result_text(ies, ies_len, buf, end);
6291 }
6292
6293
6294 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6295 {
6296         if (!offchannel_pending_action_tx(wpa_s))
6297                 return;
6298
6299         wpas_p2p_action_tx_clear(wpa_s);
6300
6301         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6302                    "operation request");
6303         offchannel_clear_pending_action_tx(wpa_s);
6304 }
6305
6306
6307 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6308                   enum p2p_discovery_type type,
6309                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6310                   const u8 *dev_id, unsigned int search_delay,
6311                   u8 seek_cnt, const char **seek_string, int freq)
6312 {
6313         wpas_p2p_clear_pending_action_tx(wpa_s);
6314         wpa_s->p2p_long_listen = 0;
6315
6316         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6317             wpa_s->p2p_in_provisioning)
6318                 return -1;
6319
6320         wpa_supplicant_cancel_sched_scan(wpa_s);
6321
6322         return p2p_find(wpa_s->global->p2p, timeout, type,
6323                         num_req_dev_types, req_dev_types, dev_id,
6324                         search_delay, seek_cnt, seek_string, freq);
6325 }
6326
6327
6328 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6329                                             struct wpa_scan_results *scan_res)
6330 {
6331         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6332
6333         if (wpa_s->p2p_scan_work) {
6334                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6335                 wpa_s->p2p_scan_work = NULL;
6336                 radio_work_done(work);
6337         }
6338
6339         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6340                 return;
6341
6342         /*
6343          * Indicate that results have been processed so that the P2P module can
6344          * continue pending tasks.
6345          */
6346         p2p_scan_res_handled(wpa_s->global->p2p);
6347 }
6348
6349
6350 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6351 {
6352         wpas_p2p_clear_pending_action_tx(wpa_s);
6353         wpa_s->p2p_long_listen = 0;
6354         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6355         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6356
6357         if (wpa_s->global->p2p)
6358                 p2p_stop_find(wpa_s->global->p2p);
6359
6360         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6361                 wpa_printf(MSG_DEBUG,
6362                            "P2P: Do not consider the scan results after stop_find");
6363                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6364         }
6365 }
6366
6367
6368 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6369 {
6370         wpas_p2p_stop_find_oper(wpa_s);
6371         if (!wpa_s->global->pending_group_iface_for_p2ps)
6372                 wpas_p2p_remove_pending_group_interface(wpa_s);
6373 }
6374
6375
6376 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6377 {
6378         struct wpa_supplicant *wpa_s = eloop_ctx;
6379         wpa_s->p2p_long_listen = 0;
6380 }
6381
6382
6383 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6384 {
6385         int res;
6386
6387         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6388                 return -1;
6389
6390         wpa_supplicant_cancel_sched_scan(wpa_s);
6391         wpas_p2p_clear_pending_action_tx(wpa_s);
6392
6393         if (timeout == 0) {
6394                 /*
6395                  * This is a request for unlimited Listen state. However, at
6396                  * least for now, this is mapped to a Listen state for one
6397                  * hour.
6398                  */
6399                 timeout = 3600;
6400         }
6401         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6402         wpa_s->p2p_long_listen = 0;
6403
6404         /*
6405          * Stop previous find/listen operation to avoid trying to request a new
6406          * remain-on-channel operation while the driver is still running the
6407          * previous one.
6408          */
6409         if (wpa_s->global->p2p)
6410                 p2p_stop_find(wpa_s->global->p2p);
6411
6412         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6413         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6414                 wpa_s->p2p_long_listen = timeout * 1000;
6415                 eloop_register_timeout(timeout, 0,
6416                                        wpas_p2p_long_listen_timeout,
6417                                        wpa_s, NULL);
6418         }
6419
6420         return res;
6421 }
6422
6423
6424 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6425                           u8 *buf, size_t len, int p2p_group)
6426 {
6427         struct wpabuf *p2p_ie;
6428         int ret;
6429
6430         if (wpa_s->global->p2p_disabled)
6431                 return -1;
6432         /*
6433          * Advertize mandatory cross connection capability even on
6434          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6435          */
6436         if (wpa_s->conf->p2p_disabled && p2p_group)
6437                 return -1;
6438         if (wpa_s->global->p2p == NULL)
6439                 return -1;
6440         if (bss == NULL)
6441                 return -1;
6442
6443         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6444         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6445                                p2p_group, p2p_ie);
6446         wpabuf_free(p2p_ie);
6447
6448         return ret;
6449 }
6450
6451
6452 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6453                           const u8 *dst, const u8 *bssid,
6454                           const u8 *ie, size_t ie_len,
6455                           unsigned int rx_freq, int ssi_signal)
6456 {
6457         if (wpa_s->global->p2p_disabled)
6458                 return 0;
6459         if (wpa_s->global->p2p == NULL)
6460                 return 0;
6461
6462         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6463                                  ie, ie_len, rx_freq)) {
6464         case P2P_PREQ_NOT_P2P:
6465                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6466                                  ssi_signal);
6467                 /* fall through */
6468         case P2P_PREQ_MALFORMED:
6469         case P2P_PREQ_NOT_LISTEN:
6470         case P2P_PREQ_NOT_PROCESSED:
6471         default: /* make gcc happy */
6472                 return 0;
6473         case P2P_PREQ_PROCESSED:
6474                 return 1;
6475         }
6476 }
6477
6478
6479 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6480                         const u8 *sa, const u8 *bssid,
6481                         u8 category, const u8 *data, size_t len, int freq)
6482 {
6483         if (wpa_s->global->p2p_disabled)
6484                 return;
6485         if (wpa_s->global->p2p == NULL)
6486                 return;
6487
6488         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6489                       freq);
6490 }
6491
6492
6493 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6494 {
6495         if (wpa_s->global->p2p_disabled)
6496                 return;
6497         if (wpa_s->global->p2p == NULL)
6498                 return;
6499
6500         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6501 }
6502
6503
6504 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6505 {
6506         p2p_group_deinit(wpa_s->p2p_group);
6507         wpa_s->p2p_group = NULL;
6508
6509         wpa_s->ap_configured_cb = NULL;
6510         wpa_s->ap_configured_cb_ctx = NULL;
6511         wpa_s->ap_configured_cb_data = NULL;
6512         wpa_s->connect_without_scan = NULL;
6513 }
6514
6515
6516 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6517 {
6518         wpa_s->p2p_long_listen = 0;
6519
6520         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6521                 return -1;
6522
6523         return p2p_reject(wpa_s->global->p2p, addr);
6524 }
6525
6526
6527 /* Invite to reinvoke a persistent group */
6528 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6529                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6530                     int ht40, int vht, int pref_freq)
6531 {
6532         enum p2p_invite_role role;
6533         u8 *bssid = NULL;
6534         int force_freq = 0;
6535         int res;
6536         int no_pref_freq_given = pref_freq == 0;
6537         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6538
6539         wpa_s->global->p2p_invite_group = NULL;
6540         if (peer_addr)
6541                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6542         else
6543                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6544
6545         wpa_s->p2p_persistent_go_freq = freq;
6546         wpa_s->p2p_go_ht40 = !!ht40;
6547         if (ssid->mode == WPAS_MODE_P2P_GO) {
6548                 role = P2P_INVITE_ROLE_GO;
6549                 if (peer_addr == NULL) {
6550                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6551                                    "address in invitation command");
6552                         return -1;
6553                 }
6554                 if (wpas_p2p_create_iface(wpa_s)) {
6555                         if (wpas_p2p_add_group_interface(wpa_s,
6556                                                          WPA_IF_P2P_GO) < 0) {
6557                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6558                                            "allocate a new interface for the "
6559                                            "group");
6560                                 return -1;
6561                         }
6562                         bssid = wpa_s->pending_interface_addr;
6563                 } else
6564                         bssid = wpa_s->own_addr;
6565         } else {
6566                 role = P2P_INVITE_ROLE_CLIENT;
6567                 peer_addr = ssid->bssid;
6568         }
6569         wpa_s->pending_invite_ssid_id = ssid->id;
6570
6571         size = P2P_MAX_PREF_CHANNELS;
6572         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6573                                    role == P2P_INVITE_ROLE_GO,
6574                                    pref_freq_list, &size);
6575         if (res)
6576                 return res;
6577         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6578
6579         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6580                 return -1;
6581
6582         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6583             no_pref_freq_given && pref_freq > 0 &&
6584             wpa_s->num_multichan_concurrent > 1 &&
6585             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6586                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6587                            pref_freq);
6588                 pref_freq = 0;
6589         }
6590
6591         /*
6592          * Stop any find/listen operations before invitation and possibly
6593          * connection establishment.
6594          */
6595         wpas_p2p_stop_find_oper(wpa_s);
6596
6597         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6598                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6599                           1, pref_freq, -1);
6600 }
6601
6602
6603 /* Invite to join an active group */
6604 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6605                           const u8 *peer_addr, const u8 *go_dev_addr)
6606 {
6607         struct wpa_global *global = wpa_s->global;
6608         enum p2p_invite_role role;
6609         u8 *bssid = NULL;
6610         struct wpa_ssid *ssid;
6611         int persistent;
6612         int freq = 0, force_freq = 0, pref_freq = 0;
6613         int res;
6614         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6615
6616         wpa_s->p2p_persistent_go_freq = 0;
6617         wpa_s->p2p_go_ht40 = 0;
6618         wpa_s->p2p_go_vht = 0;
6619
6620         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6621                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6622                         break;
6623         }
6624         if (wpa_s == NULL) {
6625                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6626                 return -1;
6627         }
6628
6629         ssid = wpa_s->current_ssid;
6630         if (ssid == NULL) {
6631                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6632                            "invitation");
6633                 return -1;
6634         }
6635
6636         wpa_s->global->p2p_invite_group = wpa_s;
6637         persistent = ssid->p2p_persistent_group &&
6638                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6639                                         ssid->ssid, ssid->ssid_len);
6640
6641         if (ssid->mode == WPAS_MODE_P2P_GO) {
6642                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6643                 bssid = wpa_s->own_addr;
6644                 if (go_dev_addr == NULL)
6645                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6646                 freq = ssid->frequency;
6647         } else {
6648                 role = P2P_INVITE_ROLE_CLIENT;
6649                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6650                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6651                                    "invite to current group");
6652                         return -1;
6653                 }
6654                 bssid = wpa_s->bssid;
6655                 if (go_dev_addr == NULL &&
6656                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6657                         go_dev_addr = wpa_s->go_dev_addr;
6658                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6659                         (int) wpa_s->assoc_freq;
6660         }
6661         wpa_s->parent->pending_invite_ssid_id = -1;
6662
6663         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6664                 return -1;
6665
6666         size = P2P_MAX_PREF_CHANNELS;
6667         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6668                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
6669                                    pref_freq_list, &size);
6670         if (res)
6671                 return res;
6672         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6673
6674         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6675                           ssid->ssid, ssid->ssid_len, force_freq,
6676                           go_dev_addr, persistent, pref_freq, -1);
6677 }
6678
6679
6680 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6681 {
6682         struct wpa_ssid *ssid = wpa_s->current_ssid;
6683         u8 go_dev_addr[ETH_ALEN];
6684         int network_id = -1;
6685         int persistent;
6686         int freq;
6687         u8 ip[3 * 4];
6688         char ip_addr[100];
6689
6690         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6691                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6692                                      wpa_s->parent, NULL);
6693         }
6694
6695         if (!wpa_s->show_group_started || !ssid)
6696                 return;
6697
6698         wpa_s->show_group_started = 0;
6699
6700         os_memset(go_dev_addr, 0, ETH_ALEN);
6701         if (ssid->bssid_set)
6702                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6703         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6704                                                ssid->ssid_len);
6705         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6706
6707         if (wpa_s->global->p2p_group_formation == wpa_s)
6708                 wpa_s->global->p2p_group_formation = NULL;
6709
6710         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6711                 (int) wpa_s->assoc_freq;
6712
6713         ip_addr[0] = '\0';
6714         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6715                 int res;
6716
6717                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6718                                   " ip_addr=%u.%u.%u.%u "
6719                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6720                                   ip[0], ip[1], ip[2], ip[3],
6721                                   ip[4], ip[5], ip[6], ip[7],
6722                                   ip[8], ip[9], ip[10], ip[11]);
6723                 if (os_snprintf_error(sizeof(ip_addr), res))
6724                         ip_addr[0] = '\0';
6725         }
6726
6727         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6728                                ssid->passphrase == NULL && ssid->psk_set ?
6729                                ssid->psk : NULL,
6730                                ssid->passphrase, go_dev_addr, persistent,
6731                                ip_addr);
6732
6733         if (persistent)
6734                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6735                                                              ssid, go_dev_addr);
6736         if (network_id < 0)
6737                 network_id = ssid->id;
6738         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6739 }
6740
6741
6742 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6743                           u32 interval1, u32 duration2, u32 interval2)
6744 {
6745         int ret;
6746
6747         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6748                 return -1;
6749
6750         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6751             wpa_s->current_ssid == NULL ||
6752             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6753                 return -1;
6754
6755         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6756                                wpa_s->own_addr, wpa_s->assoc_freq,
6757                                duration1, interval1, duration2, interval2);
6758         if (ret == 0)
6759                 wpa_s->waiting_presence_resp = 1;
6760
6761         return ret;
6762 }
6763
6764
6765 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6766                         unsigned int interval)
6767 {
6768         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6769                 return -1;
6770
6771         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6772 }
6773
6774
6775 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6776 {
6777         if (wpa_s->current_ssid == NULL) {
6778                 /*
6779                  * current_ssid can be cleared when P2P client interface gets
6780                  * disconnected, so assume this interface was used as P2P
6781                  * client.
6782                  */
6783                 return 1;
6784         }
6785         return wpa_s->current_ssid->p2p_group &&
6786                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6787 }
6788
6789
6790 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6791 {
6792         struct wpa_supplicant *wpa_s = eloop_ctx;
6793
6794         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6795                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6796                            "disabled");
6797                 return;
6798         }
6799
6800         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6801                    "group");
6802         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6803 }
6804
6805
6806 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6807 {
6808         int timeout;
6809
6810         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6811                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6812
6813         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6814                 return;
6815
6816         timeout = wpa_s->conf->p2p_group_idle;
6817         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6818             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6819             timeout = P2P_MAX_CLIENT_IDLE;
6820
6821         if (timeout == 0)
6822                 return;
6823
6824         if (timeout < 0) {
6825                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6826                         timeout = 0; /* special client mode no-timeout */
6827                 else
6828                         return;
6829         }
6830
6831         if (wpa_s->p2p_in_provisioning) {
6832                 /*
6833                  * Use the normal group formation timeout during the
6834                  * provisioning phase to avoid terminating this process too
6835                  * early due to group idle timeout.
6836                  */
6837                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6838                            "during provisioning");
6839                 return;
6840         }
6841
6842         if (wpa_s->show_group_started) {
6843                 /*
6844                  * Use the normal group formation timeout between the end of
6845                  * the provisioning phase and completion of 4-way handshake to
6846                  * avoid terminating this process too early due to group idle
6847                  * timeout.
6848                  */
6849                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6850                            "while waiting for initial 4-way handshake to "
6851                            "complete");
6852                 return;
6853         }
6854
6855         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6856                    timeout);
6857         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6858                                wpa_s, NULL);
6859 }
6860
6861
6862 /* Returns 1 if the interface was removed */
6863 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6864                           u16 reason_code, const u8 *ie, size_t ie_len,
6865                           int locally_generated)
6866 {
6867         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6868                 return 0;
6869
6870         if (!locally_generated)
6871                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6872                                  ie_len);
6873
6874         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6875             wpa_s->current_ssid &&
6876             wpa_s->current_ssid->p2p_group &&
6877             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6878                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6879                            "session is ending");
6880                 if (wpas_p2p_group_delete(wpa_s,
6881                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6882                     > 0)
6883                         return 1;
6884         }
6885
6886         return 0;
6887 }
6888
6889
6890 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6891                              u16 reason_code, const u8 *ie, size_t ie_len,
6892                              int locally_generated)
6893 {
6894         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6895                 return;
6896
6897         if (!locally_generated)
6898                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6899                                    ie_len);
6900 }
6901
6902
6903 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6904 {
6905         struct p2p_data *p2p = wpa_s->global->p2p;
6906
6907         if (p2p == NULL)
6908                 return;
6909
6910         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6911                 return;
6912
6913         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6914                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6915
6916         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6917                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6918
6919         if (wpa_s->wps &&
6920             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6921                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6922
6923         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6924                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6925
6926         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6927                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6928                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6929                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6930                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6931         }
6932
6933         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6934                 p2p_set_sec_dev_types(p2p,
6935                                       (void *) wpa_s->conf->sec_device_type,
6936                                       wpa_s->conf->num_sec_device_types);
6937
6938         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6939                 int i;
6940                 p2p_remove_wps_vendor_extensions(p2p);
6941                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6942                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6943                                 continue;
6944                         p2p_add_wps_vendor_extension(
6945                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
6946                 }
6947         }
6948
6949         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6950             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6951                 char country[3];
6952                 country[0] = wpa_s->conf->country[0];
6953                 country[1] = wpa_s->conf->country[1];
6954                 country[2] = 0x04;
6955                 p2p_set_country(p2p, country);
6956         }
6957
6958         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6959                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6960                                      wpa_s->conf->p2p_ssid_postfix ?
6961                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6962                                      0);
6963         }
6964
6965         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6966                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6967
6968         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6969                 u8 reg_class, channel;
6970                 int ret;
6971                 unsigned int r;
6972                 u8 channel_forced;
6973
6974                 if (wpa_s->conf->p2p_listen_reg_class &&
6975                     wpa_s->conf->p2p_listen_channel) {
6976                         reg_class = wpa_s->conf->p2p_listen_reg_class;
6977                         channel = wpa_s->conf->p2p_listen_channel;
6978                         channel_forced = 1;
6979                 } else {
6980                         reg_class = 81;
6981                         /*
6982                          * Pick one of the social channels randomly as the
6983                          * listen channel.
6984                          */
6985                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6986                                 channel = 1;
6987                         else
6988                                 channel = 1 + (r % 3) * 5;
6989                         channel_forced = 0;
6990                 }
6991                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
6992                                              channel_forced);
6993                 if (ret)
6994                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6995                                    "failed: %d", ret);
6996         }
6997         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6998                 u8 op_reg_class, op_channel, cfg_op_channel;
6999                 int ret = 0;
7000                 unsigned int r;
7001                 if (wpa_s->conf->p2p_oper_reg_class &&
7002                     wpa_s->conf->p2p_oper_channel) {
7003                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7004                         op_channel = wpa_s->conf->p2p_oper_channel;
7005                         cfg_op_channel = 1;
7006                 } else {
7007                         op_reg_class = 81;
7008                         /*
7009                          * Use random operation channel from (1, 6, 11)
7010                          *if no other preference is indicated.
7011                          */
7012                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7013                                 op_channel = 1;
7014                         else
7015                                 op_channel = 1 + (r % 3) * 5;
7016                         cfg_op_channel = 0;
7017                 }
7018                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7019                                            cfg_op_channel);
7020                 if (ret)
7021                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7022                                    "failed: %d", ret);
7023         }
7024
7025         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7026                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7027                                       wpa_s->conf->p2p_pref_chan) < 0) {
7028                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7029                                    "update failed");
7030                 }
7031
7032                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7033                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7034                                    "update failed");
7035                 }
7036         }
7037
7038         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7039                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7040 }
7041
7042
7043 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7044                      int duration)
7045 {
7046         if (!wpa_s->ap_iface)
7047                 return -1;
7048         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7049                                    duration);
7050 }
7051
7052
7053 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7054 {
7055         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7056                 return -1;
7057
7058         wpa_s->global->cross_connection = enabled;
7059         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7060
7061         if (!enabled) {
7062                 struct wpa_supplicant *iface;
7063
7064                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7065                 {
7066                         if (iface->cross_connect_enabled == 0)
7067                                 continue;
7068
7069                         iface->cross_connect_enabled = 0;
7070                         iface->cross_connect_in_use = 0;
7071                         wpa_msg_global(iface->parent, MSG_INFO,
7072                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7073                                        iface->ifname,
7074                                        iface->cross_connect_uplink);
7075                 }
7076         }
7077
7078         return 0;
7079 }
7080
7081
7082 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7083 {
7084         struct wpa_supplicant *iface;
7085
7086         if (!uplink->global->cross_connection)
7087                 return;
7088
7089         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7090                 if (!iface->cross_connect_enabled)
7091                         continue;
7092                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7093                     0)
7094                         continue;
7095                 if (iface->ap_iface == NULL)
7096                         continue;
7097                 if (iface->cross_connect_in_use)
7098                         continue;
7099
7100                 iface->cross_connect_in_use = 1;
7101                 wpa_msg_global(iface->parent, MSG_INFO,
7102                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7103                                iface->ifname, iface->cross_connect_uplink);
7104         }
7105 }
7106
7107
7108 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7109 {
7110         struct wpa_supplicant *iface;
7111
7112         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7113                 if (!iface->cross_connect_enabled)
7114                         continue;
7115                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7116                     0)
7117                         continue;
7118                 if (!iface->cross_connect_in_use)
7119                         continue;
7120
7121                 wpa_msg_global(iface->parent, MSG_INFO,
7122                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7123                                iface->ifname, iface->cross_connect_uplink);
7124                 iface->cross_connect_in_use = 0;
7125         }
7126 }
7127
7128
7129 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7130 {
7131         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7132             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7133             wpa_s->cross_connect_disallowed)
7134                 wpas_p2p_disable_cross_connect(wpa_s);
7135         else
7136                 wpas_p2p_enable_cross_connect(wpa_s);
7137         if (!wpa_s->ap_iface &&
7138             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7139                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7140 }
7141
7142
7143 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7144 {
7145         wpas_p2p_disable_cross_connect(wpa_s);
7146         if (!wpa_s->ap_iface &&
7147             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7148                                          wpa_s, NULL))
7149                 wpas_p2p_set_group_idle_timeout(wpa_s);
7150 }
7151
7152
7153 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7154 {
7155         struct wpa_supplicant *iface;
7156
7157         if (!wpa_s->global->cross_connection)
7158                 return;
7159
7160         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7161                 if (iface == wpa_s)
7162                         continue;
7163                 if (iface->drv_flags &
7164                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7165                         continue;
7166                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7167                     iface != wpa_s->parent)
7168                         continue;
7169
7170                 wpa_s->cross_connect_enabled = 1;
7171                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7172                            sizeof(wpa_s->cross_connect_uplink));
7173                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7174                            "%s to %s whenever uplink is available",
7175                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7176
7177                 if (iface->ap_iface || iface->current_ssid == NULL ||
7178                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7179                     iface->cross_connect_disallowed ||
7180                     iface->wpa_state != WPA_COMPLETED)
7181                         break;
7182
7183                 wpa_s->cross_connect_in_use = 1;
7184                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7185                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7186                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7187                 break;
7188         }
7189 }
7190
7191
7192 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7193 {
7194         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7195             !wpa_s->p2p_in_provisioning)
7196                 return 0; /* not P2P client operation */
7197
7198         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7199                    "session overlap");
7200         if (wpa_s != wpa_s->parent)
7201                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
7202         wpas_p2p_group_formation_failed(wpa_s, 0);
7203         return 1;
7204 }
7205
7206
7207 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7208 {
7209         struct wpa_supplicant *wpa_s = eloop_ctx;
7210         wpas_p2p_notif_pbc_overlap(wpa_s);
7211 }
7212
7213
7214 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7215                                   enum wpas_p2p_channel_update_trig trig)
7216 {
7217         struct p2p_channels chan, cli_chan;
7218         struct wpa_used_freq_data *freqs = NULL;
7219         unsigned int num = wpa_s->num_multichan_concurrent;
7220
7221         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7222                 return;
7223
7224         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7225         if (!freqs)
7226                 return;
7227
7228         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7229
7230         os_memset(&chan, 0, sizeof(chan));
7231         os_memset(&cli_chan, 0, sizeof(cli_chan));
7232         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7233                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7234                            "channel list");
7235                 return;
7236         }
7237
7238         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7239
7240         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7241
7242         /*
7243          * The used frequencies map changed, so it is possible that a GO is
7244          * using a channel that is no longer valid for P2P use. It is also
7245          * possible that due to policy consideration, it would be preferable to
7246          * move it to a frequency already used by other station interfaces.
7247          */
7248         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7249
7250         os_free(freqs);
7251 }
7252
7253
7254 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7255                                      struct wpa_scan_results *scan_res)
7256 {
7257         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7258 }
7259
7260
7261 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7262 {
7263         struct wpa_global *global = wpa_s->global;
7264         int found = 0;
7265         const u8 *peer;
7266
7267         if (global->p2p == NULL)
7268                 return -1;
7269
7270         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7271
7272         if (wpa_s->pending_interface_name[0] &&
7273             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7274                 found = 1;
7275
7276         peer = p2p_get_go_neg_peer(global->p2p);
7277         if (peer) {
7278                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7279                            MACSTR, MAC2STR(peer));
7280                 p2p_unauthorize(global->p2p, peer);
7281                 found = 1;
7282         }
7283
7284         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7285                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7286                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7287                 found = 1;
7288         }
7289
7290         if (wpa_s->pending_pd_before_join) {
7291                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7292                 wpa_s->pending_pd_before_join = 0;
7293                 found = 1;
7294         }
7295
7296         wpas_p2p_stop_find(wpa_s);
7297
7298         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7299                 if (wpa_s == global->p2p_group_formation &&
7300                     (wpa_s->p2p_in_provisioning ||
7301                      wpa_s->parent->pending_interface_type ==
7302                      WPA_IF_P2P_CLIENT)) {
7303                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7304                                    "formation found - cancelling",
7305                                    wpa_s->ifname);
7306                         found = 1;
7307                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7308                                              wpa_s->parent, NULL);
7309                         if (wpa_s->p2p_in_provisioning) {
7310                                 wpas_group_formation_completed(wpa_s, 0, 0);
7311                                 break;
7312                         }
7313                         wpas_p2p_group_delete(wpa_s,
7314                                               P2P_GROUP_REMOVAL_REQUESTED);
7315                         break;
7316                 } else if (wpa_s->p2p_in_invitation) {
7317                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7318                                    wpa_s->ifname);
7319                         found = 1;
7320                         wpas_p2p_group_formation_failed(wpa_s, 0);
7321                 }
7322         }
7323
7324         if (!found) {
7325                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7326                 return -1;
7327         }
7328
7329         return 0;
7330 }
7331
7332
7333 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7334 {
7335         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7336                 return;
7337
7338         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7339                    "being available anymore");
7340         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7341 }
7342
7343
7344 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7345                                    int freq_24, int freq_5, int freq_overall)
7346 {
7347         struct p2p_data *p2p = wpa_s->global->p2p;
7348         if (p2p == NULL)
7349                 return;
7350         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7351 }
7352
7353
7354 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7355 {
7356         u8 peer[ETH_ALEN];
7357         struct p2p_data *p2p = wpa_s->global->p2p;
7358
7359         if (p2p == NULL)
7360                 return -1;
7361
7362         if (hwaddr_aton(addr, peer))
7363                 return -1;
7364
7365         return p2p_unauthorize(p2p, peer);
7366 }
7367
7368
7369 /**
7370  * wpas_p2p_disconnect - Disconnect from a P2P Group
7371  * @wpa_s: Pointer to wpa_supplicant data
7372  * Returns: 0 on success, -1 on failure
7373  *
7374  * This can be used to disconnect from a group in which the local end is a P2P
7375  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7376  * virtual network interface was created for this group, that interface will be
7377  * removed. Otherwise, only the configured P2P group network will be removed
7378  * from the interface.
7379  */
7380 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7381 {
7382
7383         if (wpa_s == NULL)
7384                 return -1;
7385
7386         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7387                 -1 : 0;
7388 }
7389
7390
7391 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7392 {
7393         int ret;
7394
7395         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7396                 return 0;
7397
7398         ret = p2p_in_progress(wpa_s->global->p2p);
7399         if (ret == 0) {
7400                 /*
7401                  * Check whether there is an ongoing WPS provisioning step (or
7402                  * other parts of group formation) on another interface since
7403                  * p2p_in_progress() does not report this to avoid issues for
7404                  * scans during such provisioning step.
7405                  */
7406                 if (wpa_s->global->p2p_group_formation &&
7407                     wpa_s->global->p2p_group_formation != wpa_s) {
7408                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7409                                 "in group formation",
7410                                 wpa_s->global->p2p_group_formation->ifname);
7411                         ret = 1;
7412                 }
7413         }
7414
7415         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7416                 struct os_reltime now;
7417                 os_get_reltime(&now);
7418                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7419                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7420                         /* Wait for the first client has expired */
7421                         wpa_s->global->p2p_go_wait_client.sec = 0;
7422                 } else {
7423                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7424                         ret = 1;
7425                 }
7426         }
7427
7428         return ret;
7429 }
7430
7431
7432 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7433                               struct wpa_ssid *ssid)
7434 {
7435         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7436             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7437                                  wpa_s->parent, NULL) > 0) {
7438                 /**
7439                  * Remove the network by scheduling the group formation
7440                  * timeout to happen immediately. The teardown code
7441                  * needs to be scheduled to run asynch later so that we
7442                  * don't delete data from under ourselves unexpectedly.
7443                  * Calling wpas_p2p_group_formation_timeout directly
7444                  * causes a series of crashes in WPS failure scenarios.
7445                  */
7446                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7447                            "P2P group network getting removed");
7448                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7449                                        wpa_s->parent, NULL);
7450         }
7451 }
7452
7453
7454 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7455                                           const u8 *addr, const u8 *ssid,
7456                                           size_t ssid_len)
7457 {
7458         struct wpa_ssid *s;
7459         size_t i;
7460
7461         for (s = wpa_s->conf->ssid; s; s = s->next) {
7462                 if (s->disabled != 2)
7463                         continue;
7464                 if (ssid &&
7465                     (ssid_len != s->ssid_len ||
7466                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7467                         continue;
7468                 if (addr == NULL) {
7469                         if (s->mode == WPAS_MODE_P2P_GO)
7470                                 return s;
7471                         continue;
7472                 }
7473                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7474                         return s; /* peer is GO in the persistent group */
7475                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7476                         continue;
7477                 for (i = 0; i < s->num_p2p_clients; i++) {
7478                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7479                                       addr, ETH_ALEN) == 0)
7480                                 return s; /* peer is P2P client in persistent
7481                                            * group */
7482                 }
7483         }
7484
7485         return NULL;
7486 }
7487
7488
7489 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7490                                        const u8 *addr)
7491 {
7492         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7493                                  wpa_s->parent, NULL) > 0) {
7494                 /*
7495                  * This can happen if WPS provisioning step is not terminated
7496                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7497                  * peer was able to connect, there is no need to time out group
7498                  * formation after this, though. In addition, this is used with
7499                  * the initial connection wait on the GO as a separate formation
7500                  * timeout and as such, expected to be hit after the initial WPS
7501                  * provisioning step.
7502                  */
7503                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7504
7505                 if (!wpa_s->p2p_go_group_formation_completed &&
7506                     !wpa_s->group_formation_reported) {
7507                         /*
7508                          * GO has not yet notified group formation success since
7509                          * the WPS step was not completed cleanly. Do that
7510                          * notification now since the P2P Client was able to
7511                          * connect and as such, must have received the
7512                          * credential from the WPS step.
7513                          */
7514                         if (wpa_s->global->p2p)
7515                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7516                         wpas_group_formation_completed(wpa_s, 1, 0);
7517                 }
7518         }
7519         if (!wpa_s->p2p_go_group_formation_completed) {
7520                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7521                 wpa_s->p2p_go_group_formation_completed = 1;
7522                 wpa_s->global->p2p_group_formation = NULL;
7523                 wpa_s->p2p_in_provisioning = 0;
7524                 wpa_s->p2p_in_invitation = 0;
7525         }
7526         wpa_s->global->p2p_go_wait_client.sec = 0;
7527         if (addr == NULL)
7528                 return;
7529         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7530 }
7531
7532
7533 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7534                                        int group_added)
7535 {
7536         struct wpa_supplicant *group = wpa_s;
7537         int ret = 0;
7538
7539         if (wpa_s->global->p2p_group_formation)
7540                 group = wpa_s->global->p2p_group_formation;
7541         wpa_s = wpa_s->global->p2p_init_wpa_s;
7542         offchannel_send_action_done(wpa_s);
7543         if (group_added)
7544                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7545         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7546         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7547                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7548                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7549                          wpa_s->p2p_persistent_id,
7550                          wpa_s->p2p_pd_before_go_neg,
7551                          wpa_s->p2p_go_ht40,
7552                          wpa_s->p2p_go_vht);
7553         return ret;
7554 }
7555
7556
7557 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7558 {
7559         int res;
7560
7561         if (!wpa_s->p2p_fallback_to_go_neg ||
7562             wpa_s->p2p_in_provisioning <= 5)
7563                 return 0;
7564
7565         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7566                 return 0; /* peer operating as a GO */
7567
7568         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7569                 "fallback to GO Negotiation");
7570         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7571                        "reason=GO-not-found");
7572         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7573
7574         return res == 1 ? 2 : 1;
7575 }
7576
7577
7578 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7579 {
7580         struct wpa_supplicant *ifs;
7581
7582         if (wpa_s->wpa_state > WPA_SCANNING) {
7583                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7584                         "concurrent operation",
7585                         wpa_s->conf->p2p_search_delay);
7586                 return wpa_s->conf->p2p_search_delay;
7587         }
7588
7589         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7590                          radio_list) {
7591                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7592                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7593                                 "delay due to concurrent operation on "
7594                                 "interface %s",
7595                                 wpa_s->conf->p2p_search_delay,
7596                                 ifs->ifname);
7597                         return wpa_s->conf->p2p_search_delay;
7598                 }
7599         }
7600
7601         return 0;
7602 }
7603
7604
7605 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7606                                      struct wpa_ssid *s, const u8 *addr,
7607                                      int iface_addr)
7608 {
7609         struct psk_list_entry *psk, *tmp;
7610         int changed = 0;
7611
7612         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7613                               list) {
7614                 if ((iface_addr && !psk->p2p &&
7615                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7616                     (!iface_addr && psk->p2p &&
7617                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7618                         wpa_dbg(wpa_s, MSG_DEBUG,
7619                                 "P2P: Remove persistent group PSK list entry for "
7620                                 MACSTR " p2p=%u",
7621                                 MAC2STR(psk->addr), psk->p2p);
7622                         dl_list_del(&psk->list);
7623                         os_free(psk);
7624                         changed++;
7625                 }
7626         }
7627
7628         return changed;
7629 }
7630
7631
7632 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7633                          const u8 *p2p_dev_addr,
7634                          const u8 *psk, size_t psk_len)
7635 {
7636         struct wpa_ssid *ssid = wpa_s->current_ssid;
7637         struct wpa_ssid *persistent;
7638         struct psk_list_entry *p, *last;
7639
7640         if (psk_len != sizeof(p->psk))
7641                 return;
7642
7643         if (p2p_dev_addr) {
7644                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7645                         " p2p_dev_addr=" MACSTR,
7646                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7647                 if (is_zero_ether_addr(p2p_dev_addr))
7648                         p2p_dev_addr = NULL;
7649         } else {
7650                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7651                         MAC2STR(mac_addr));
7652         }
7653
7654         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7655                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7656                 /* To be added to persistent group once created */
7657                 if (wpa_s->global->add_psk == NULL) {
7658                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7659                         if (wpa_s->global->add_psk == NULL)
7660                                 return;
7661                 }
7662                 p = wpa_s->global->add_psk;
7663                 if (p2p_dev_addr) {
7664                         p->p2p = 1;
7665                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7666                 } else {
7667                         p->p2p = 0;
7668                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7669                 }
7670                 os_memcpy(p->psk, psk, psk_len);
7671                 return;
7672         }
7673
7674         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7675                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7676                 return;
7677         }
7678
7679         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7680                                              ssid->ssid_len);
7681         if (!persistent) {
7682                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7683                 return;
7684         }
7685
7686         p = os_zalloc(sizeof(*p));
7687         if (p == NULL)
7688                 return;
7689         if (p2p_dev_addr) {
7690                 p->p2p = 1;
7691                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7692         } else {
7693                 p->p2p = 0;
7694                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7695         }
7696         os_memcpy(p->psk, psk, psk_len);
7697
7698         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7699             (last = dl_list_last(&persistent->psk_list,
7700                                  struct psk_list_entry, list))) {
7701                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7702                         MACSTR " (p2p=%u) to make room for a new one",
7703                         MAC2STR(last->addr), last->p2p);
7704                 dl_list_del(&last->list);
7705                 os_free(last);
7706         }
7707
7708         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7709                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7710                                   p2p_dev_addr == NULL);
7711         if (p2p_dev_addr) {
7712                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7713                         MACSTR, MAC2STR(p2p_dev_addr));
7714         } else {
7715                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7716                         MAC2STR(mac_addr));
7717         }
7718         dl_list_add(&persistent->psk_list, &p->list);
7719
7720         if (wpa_s->parent->conf->update_config &&
7721             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7722                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7723 }
7724
7725
7726 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7727                                 struct wpa_ssid *s, const u8 *addr,
7728                                 int iface_addr)
7729 {
7730         int res;
7731
7732         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7733         if (res > 0 && wpa_s->conf->update_config &&
7734             wpa_config_write(wpa_s->confname, wpa_s->conf))
7735                 wpa_dbg(wpa_s, MSG_DEBUG,
7736                         "P2P: Failed to update configuration");
7737 }
7738
7739
7740 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7741                                       const u8 *peer, int iface_addr)
7742 {
7743         struct hostapd_data *hapd;
7744         struct hostapd_wpa_psk *psk, *prev, *rem;
7745         struct sta_info *sta;
7746
7747         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7748             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7749                 return;
7750
7751         /* Remove per-station PSK entry */
7752         hapd = wpa_s->ap_iface->bss[0];
7753         prev = NULL;
7754         psk = hapd->conf->ssid.wpa_psk;
7755         while (psk) {
7756                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7757                     (!iface_addr &&
7758                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7759                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7760                                 MACSTR " iface_addr=%d",
7761                                 MAC2STR(peer), iface_addr);
7762                         if (prev)
7763                                 prev->next = psk->next;
7764                         else
7765                                 hapd->conf->ssid.wpa_psk = psk->next;
7766                         rem = psk;
7767                         psk = psk->next;
7768                         os_free(rem);
7769                 } else {
7770                         prev = psk;
7771                         psk = psk->next;
7772                 }
7773         }
7774
7775         /* Disconnect from group */
7776         if (iface_addr)
7777                 sta = ap_get_sta(hapd, peer);
7778         else
7779                 sta = ap_get_sta_p2p(hapd, peer);
7780         if (sta) {
7781                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7782                         " (iface_addr=%d) from group",
7783                         MAC2STR(peer), iface_addr);
7784                 hostapd_drv_sta_deauth(hapd, sta->addr,
7785                                        WLAN_REASON_DEAUTH_LEAVING);
7786                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7787         }
7788 }
7789
7790
7791 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7792                             int iface_addr)
7793 {
7794         struct wpa_ssid *s;
7795         struct wpa_supplicant *w;
7796         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
7797
7798         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
7799
7800         /* Remove from any persistent group */
7801         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
7802                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
7803                         continue;
7804                 if (!iface_addr)
7805                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
7806                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
7807         }
7808
7809         /* Remove from any operating group */
7810         for (w = wpa_s->global->ifaces; w; w = w->next)
7811                 wpas_p2p_remove_client_go(w, peer, iface_addr);
7812 }
7813
7814
7815 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
7816 {
7817         struct wpa_supplicant *wpa_s = eloop_ctx;
7818         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
7819 }
7820
7821
7822 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
7823 {
7824         struct wpa_supplicant *wpa_s = eloop_ctx;
7825
7826         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
7827         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
7828 }
7829
7830
7831 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
7832                                         struct wpa_ssid *ssid)
7833 {
7834         struct wpa_supplicant *iface;
7835
7836         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7837                 if (!iface->current_ssid ||
7838                     iface->current_ssid->frequency == freq ||
7839                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
7840                      !iface->current_ssid->p2p_group))
7841                         continue;
7842
7843                 /* Remove the connection with least priority */
7844                 if (!wpas_is_p2p_prioritized(iface)) {
7845                         /* STA connection has priority over existing
7846                          * P2P connection, so remove the interface. */
7847                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
7848                         eloop_register_timeout(0, 0,
7849                                                wpas_p2p_group_freq_conflict,
7850                                                iface, NULL);
7851                         /* If connection in progress is P2P connection, do not
7852                          * proceed for the connection. */
7853                         if (wpa_s == iface)
7854                                 return -1;
7855                         else
7856                                 return 0;
7857                 } else {
7858                         /* P2P connection has priority, disable the STA network
7859                          */
7860                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
7861                                                        ssid);
7862                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7863                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7864                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7865                                   ETH_ALEN);
7866                         /* If P2P connection is in progress, continue
7867                          * connecting...*/
7868                         if (wpa_s == iface)
7869                                 return 0;
7870                         else
7871                                 return -1;
7872                 }
7873         }
7874
7875         return 0;
7876 }
7877
7878
7879 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7880 {
7881         struct wpa_ssid *ssid = wpa_s->current_ssid;
7882
7883         if (ssid == NULL || !ssid->p2p_group)
7884                 return 0;
7885
7886         if (wpa_s->p2p_last_4way_hs_fail &&
7887             wpa_s->p2p_last_4way_hs_fail == ssid) {
7888                 u8 go_dev_addr[ETH_ALEN];
7889                 struct wpa_ssid *persistent;
7890
7891                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7892                                               ssid->ssid,
7893                                               ssid->ssid_len) <= 0) {
7894                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7895                         goto disconnect;
7896                 }
7897
7898                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7899                         MACSTR, MAC2STR(go_dev_addr));
7900                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7901                                                      ssid->ssid,
7902                                                      ssid->ssid_len);
7903                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7904                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7905                         goto disconnect;
7906                 }
7907                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7908                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7909                                persistent->id);
7910         disconnect:
7911                 wpa_s->p2p_last_4way_hs_fail = NULL;
7912                 /*
7913                  * Remove the group from a timeout to avoid issues with caller
7914                  * continuing to use the interface if this is on a P2P group
7915                  * interface.
7916                  */
7917                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7918                                        wpa_s, NULL);
7919                 return 1;
7920         }
7921
7922         wpa_s->p2p_last_4way_hs_fail = ssid;
7923         return 0;
7924 }
7925
7926
7927 #ifdef CONFIG_WPS_NFC
7928
7929 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7930                                              struct wpabuf *p2p)
7931 {
7932         struct wpabuf *ret;
7933         size_t wsc_len;
7934
7935         if (p2p == NULL) {
7936                 wpabuf_free(wsc);
7937                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7938                 return NULL;
7939         }
7940
7941         wsc_len = wsc ? wpabuf_len(wsc) : 0;
7942         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7943         if (ret == NULL) {
7944                 wpabuf_free(wsc);
7945                 wpabuf_free(p2p);
7946                 return NULL;
7947         }
7948
7949         wpabuf_put_be16(ret, wsc_len);
7950         if (wsc)
7951                 wpabuf_put_buf(ret, wsc);
7952         wpabuf_put_be16(ret, wpabuf_len(p2p));
7953         wpabuf_put_buf(ret, p2p);
7954
7955         wpabuf_free(wsc);
7956         wpabuf_free(p2p);
7957         wpa_hexdump_buf(MSG_DEBUG,
7958                         "P2P: Generated NFC connection handover message", ret);
7959
7960         if (ndef && ret) {
7961                 struct wpabuf *tmp;
7962                 tmp = ndef_build_p2p(ret);
7963                 wpabuf_free(ret);
7964                 if (tmp == NULL) {
7965                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7966                         return NULL;
7967                 }
7968                 ret = tmp;
7969         }
7970
7971         return ret;
7972 }
7973
7974
7975 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7976                              struct wpa_ssid **ssid, u8 *go_dev_addr)
7977 {
7978         struct wpa_supplicant *iface;
7979
7980         if (go_dev_addr)
7981                 os_memset(go_dev_addr, 0, ETH_ALEN);
7982         if (ssid)
7983                 *ssid = NULL;
7984         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7985                 if (iface->wpa_state < WPA_ASSOCIATING ||
7986                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7987                     !iface->current_ssid->p2p_group ||
7988                     iface->current_ssid->mode != WPAS_MODE_INFRA)
7989                         continue;
7990                 if (ssid)
7991                         *ssid = iface->current_ssid;
7992                 if (go_dev_addr)
7993                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7994                 return iface->assoc_freq;
7995         }
7996         return 0;
7997 }
7998
7999
8000 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8001                                           int ndef)
8002 {
8003         struct wpabuf *wsc, *p2p;
8004         struct wpa_ssid *ssid;
8005         u8 go_dev_addr[ETH_ALEN];
8006         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8007
8008         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8009                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8010                 return NULL;
8011         }
8012
8013         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8014             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8015                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8016                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8017                 return NULL;
8018         }
8019
8020         if (cli_freq == 0) {
8021                 wsc = wps_build_nfc_handover_req_p2p(
8022                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8023         } else
8024                 wsc = NULL;
8025         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8026                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8027                                          ssid ? ssid->ssid_len : 0);
8028
8029         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8030 }
8031
8032
8033 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8034                                           int ndef, int tag)
8035 {
8036         struct wpabuf *wsc, *p2p;
8037         struct wpa_ssid *ssid;
8038         u8 go_dev_addr[ETH_ALEN];
8039         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8040
8041         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8042                 return NULL;
8043
8044         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8045             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8046                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8047                 return NULL;
8048
8049         if (cli_freq == 0) {
8050                 wsc = wps_build_nfc_handover_sel_p2p(
8051                         wpa_s->parent->wps,
8052                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8053                         DEV_PW_NFC_CONNECTION_HANDOVER,
8054                         wpa_s->conf->wps_nfc_dh_pubkey,
8055                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8056         } else
8057                 wsc = NULL;
8058         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8059                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8060                                          ssid ? ssid->ssid_len : 0);
8061
8062         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8063 }
8064
8065
8066 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8067                                    struct p2p_nfc_params *params)
8068 {
8069         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8070                    "connection handover (freq=%d)",
8071                    params->go_freq);
8072
8073         if (params->go_freq && params->go_ssid_len) {
8074                 wpa_s->p2p_wps_method = WPS_NFC;
8075                 wpa_s->pending_join_wps_method = WPS_NFC;
8076                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8077                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8078                           ETH_ALEN);
8079                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8080                                            params->go_ssid,
8081                                            params->go_ssid_len);
8082         }
8083
8084         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8085                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8086                                 params->go_freq, -1, 0, 1, 1);
8087 }
8088
8089
8090 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8091                                   struct p2p_nfc_params *params, int tag)
8092 {
8093         int res, persistent;
8094         struct wpa_ssid *ssid;
8095
8096         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8097                    "connection handover");
8098         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8099                 ssid = wpa_s->current_ssid;
8100                 if (ssid == NULL)
8101                         continue;
8102                 if (ssid->mode != WPAS_MODE_P2P_GO)
8103                         continue;
8104                 if (wpa_s->ap_iface == NULL)
8105                         continue;
8106                 break;
8107         }
8108         if (wpa_s == NULL) {
8109                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8110                 return -1;
8111         }
8112
8113         if (wpa_s->parent->p2p_oob_dev_pw_id !=
8114             DEV_PW_NFC_CONNECTION_HANDOVER &&
8115             !wpa_s->parent->p2p_oob_dev_pw) {
8116                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8117                 return -1;
8118         }
8119         res = wpas_ap_wps_add_nfc_pw(
8120                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
8121                 wpa_s->parent->p2p_oob_dev_pw,
8122                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
8123                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
8124         if (res)
8125                 return res;
8126
8127         if (!tag) {
8128                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8129                 return 0;
8130         }
8131
8132         if (!params->peer ||
8133             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8134                 return 0;
8135
8136         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8137                    " to join", MAC2STR(params->peer->p2p_device_addr));
8138
8139         wpa_s->global->p2p_invite_group = wpa_s;
8140         persistent = ssid->p2p_persistent_group &&
8141                 wpas_p2p_get_persistent(wpa_s->parent,
8142                                         params->peer->p2p_device_addr,
8143                                         ssid->ssid, ssid->ssid_len);
8144         wpa_s->parent->pending_invite_ssid_id = -1;
8145
8146         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8147                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8148                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8149                           wpa_s->global->p2p_dev_addr, persistent, 0,
8150                           wpa_s->parent->p2p_oob_dev_pw_id);
8151 }
8152
8153
8154 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8155                                     struct p2p_nfc_params *params,
8156                                     int forced_freq)
8157 {
8158         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8159                    "connection handover");
8160         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8161                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8162                                 forced_freq, -1, 0, 1, 1);
8163 }
8164
8165
8166 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8167                                     struct p2p_nfc_params *params,
8168                                     int forced_freq)
8169 {
8170         int res;
8171
8172         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8173                    "connection handover");
8174         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8175                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8176                                forced_freq, -1, 0, 1, 1);
8177         if (res)
8178                 return res;
8179
8180         res = wpas_p2p_listen(wpa_s, 60);
8181         if (res) {
8182                 p2p_unauthorize(wpa_s->global->p2p,
8183                                 params->peer->p2p_device_addr);
8184         }
8185
8186         return res;
8187 }
8188
8189
8190 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8191                                             const struct wpabuf *data,
8192                                             int sel, int tag, int forced_freq)
8193 {
8194         const u8 *pos, *end;
8195         u16 len, id;
8196         struct p2p_nfc_params params;
8197         int res;
8198
8199         os_memset(&params, 0, sizeof(params));
8200         params.sel = sel;
8201
8202         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8203
8204         pos = wpabuf_head(data);
8205         end = pos + wpabuf_len(data);
8206
8207         if (end - pos < 2) {
8208                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8209                            "attributes");
8210                 return -1;
8211         }
8212         len = WPA_GET_BE16(pos);
8213         pos += 2;
8214         if (len > end - pos) {
8215                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8216                            "attributes");
8217                 return -1;
8218         }
8219         params.wsc_attr = pos;
8220         params.wsc_len = len;
8221         pos += len;
8222
8223         if (end - pos < 2) {
8224                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8225                            "attributes");
8226                 return -1;
8227         }
8228         len = WPA_GET_BE16(pos);
8229         pos += 2;
8230         if (len > end - pos) {
8231                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8232                            "attributes");
8233                 return -1;
8234         }
8235         params.p2p_attr = pos;
8236         params.p2p_len = len;
8237         pos += len;
8238
8239         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8240                     params.wsc_attr, params.wsc_len);
8241         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8242                     params.p2p_attr, params.p2p_len);
8243         if (pos < end) {
8244                 wpa_hexdump(MSG_DEBUG,
8245                             "P2P: Ignored extra data after P2P attributes",
8246                             pos, end - pos);
8247         }
8248
8249         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8250         if (res)
8251                 return res;
8252
8253         if (params.next_step == NO_ACTION)
8254                 return 0;
8255
8256         if (params.next_step == BOTH_GO) {
8257                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8258                         MAC2STR(params.peer->p2p_device_addr));
8259                 return 0;
8260         }
8261
8262         if (params.next_step == PEER_CLIENT) {
8263                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8264                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8265                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8266                                 " ssid=\"%s\"",
8267                                 MAC2STR(params.peer->p2p_device_addr),
8268                                 params.go_freq,
8269                                 MAC2STR(params.go_dev_addr),
8270                                 wpa_ssid_txt(params.go_ssid,
8271                                              params.go_ssid_len));
8272                 } else {
8273                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8274                                 "peer=" MACSTR " freq=%d",
8275                                 MAC2STR(params.peer->p2p_device_addr),
8276                                 params.go_freq);
8277                 }
8278                 return 0;
8279         }
8280
8281         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8282                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8283                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8284                 return 0;
8285         }
8286
8287         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8288         wpa_s->p2p_oob_dev_pw = NULL;
8289
8290         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8291                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8292                            "received");
8293                 return -1;
8294         }
8295
8296         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8297         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8298         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8299                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8300         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8301                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8302         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8303
8304         if (tag) {
8305                 if (id < 0x10) {
8306                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8307                                    "peer OOB Device Password Id %u", id);
8308                         return -1;
8309                 }
8310                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8311                            "Device Password Id %u", id);
8312                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8313                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8314                                 params.oob_dev_pw_len -
8315                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
8316                 wpa_s->p2p_oob_dev_pw_id = id;
8317                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8318                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8319                         params.oob_dev_pw_len -
8320                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8321                 if (wpa_s->p2p_oob_dev_pw == NULL)
8322                         return -1;
8323
8324                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8325                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8326                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8327                         return -1;
8328         } else {
8329                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8330                            "without Device Password");
8331                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8332         }
8333
8334         switch (params.next_step) {
8335         case NO_ACTION:
8336         case BOTH_GO:
8337         case PEER_CLIENT:
8338                 /* already covered above */
8339                 return 0;
8340         case JOIN_GROUP:
8341                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8342         case AUTH_JOIN:
8343                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8344         case INIT_GO_NEG:
8345                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8346         case RESP_GO_NEG:
8347                 /* TODO: use own OOB Dev Pw */
8348                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8349         }
8350
8351         return -1;
8352 }
8353
8354
8355 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8356                              const struct wpabuf *data, int forced_freq)
8357 {
8358         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8359                 return -1;
8360
8361         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8362 }
8363
8364
8365 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8366                                  const struct wpabuf *req,
8367                                  const struct wpabuf *sel, int forced_freq)
8368 {
8369         struct wpabuf *tmp;
8370         int ret;
8371
8372         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8373                 return -1;
8374
8375         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8376
8377         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8378                           wpabuf_head(req), wpabuf_len(req));
8379         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8380                           wpabuf_head(sel), wpabuf_len(sel));
8381         if (forced_freq)
8382                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8383         tmp = ndef_parse_p2p(init ? sel : req);
8384         if (tmp == NULL) {
8385                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8386                 return -1;
8387         }
8388
8389         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8390                                                forced_freq);
8391         wpabuf_free(tmp);
8392
8393         return ret;
8394 }
8395
8396
8397 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8398 {
8399         const u8 *if_addr;
8400         int go_intent = wpa_s->conf->p2p_go_intent;
8401         struct wpa_supplicant *iface;
8402
8403         if (wpa_s->global->p2p == NULL)
8404                 return -1;
8405
8406         if (!enabled) {
8407                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8408                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8409                 {
8410                         if (!iface->ap_iface)
8411                                 continue;
8412                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8413                 }
8414                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8415                                                  0, NULL);
8416                 if (wpa_s->p2p_nfc_tag_enabled)
8417                         wpas_p2p_remove_pending_group_interface(wpa_s);
8418                 wpa_s->p2p_nfc_tag_enabled = 0;
8419                 return 0;
8420         }
8421
8422         if (wpa_s->global->p2p_disabled)
8423                 return -1;
8424
8425         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8426             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8427             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8428             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8429                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8430                            "to allow static handover cases");
8431                 return -1;
8432         }
8433
8434         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8435
8436         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8437         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8438         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8439         if (wpa_s->p2p_oob_dev_pw == NULL)
8440                 return -1;
8441         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8442
8443         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8444             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8445                 /*
8446                  * P2P Group Interface present and the command came on group
8447                  * interface, so enable the token for the current interface.
8448                  */
8449                 wpa_s->create_p2p_iface = 0;
8450         } else {
8451                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8452         }
8453
8454         if (wpa_s->create_p2p_iface) {
8455                 enum wpa_driver_if_type iftype;
8456                 /* Prepare to add a new interface for the group */
8457                 iftype = WPA_IF_P2P_GROUP;
8458                 if (go_intent == 15)
8459                         iftype = WPA_IF_P2P_GO;
8460                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8461                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8462                                    "interface for the group");
8463                         return -1;
8464                 }
8465
8466                 if_addr = wpa_s->pending_interface_addr;
8467         } else
8468                 if_addr = wpa_s->own_addr;
8469
8470         wpa_s->p2p_nfc_tag_enabled = enabled;
8471
8472         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8473                 struct hostapd_data *hapd;
8474                 if (iface->ap_iface == NULL)
8475                         continue;
8476                 hapd = iface->ap_iface->bss[0];
8477                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8478                 hapd->conf->wps_nfc_dh_pubkey =
8479                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8480                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8481                 hapd->conf->wps_nfc_dh_privkey =
8482                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8483                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8484                 hapd->conf->wps_nfc_dev_pw =
8485                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8486                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8487
8488                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8489                         wpa_dbg(iface, MSG_DEBUG,
8490                                 "P2P: Failed to enable NFC Tag for GO");
8491                 }
8492         }
8493         p2p_set_authorized_oob_dev_pw_id(
8494                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8495                 if_addr);
8496
8497         return 0;
8498 }
8499
8500 #endif /* CONFIG_WPS_NFC */
8501
8502
8503 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8504                                              struct wpa_used_freq_data *freqs,
8505                                              unsigned int num)
8506 {
8507         u8 curr_chan, cand, chan;
8508         unsigned int i;
8509
8510         /*
8511          * If possible, optimize the Listen channel to be a channel that is
8512          * already used by one of the other interfaces.
8513          */
8514         if (!wpa_s->conf->p2p_optimize_listen_chan)
8515                 return;
8516
8517         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8518                 return;
8519
8520         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8521         for (i = 0, cand = 0; i < num; i++) {
8522                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8523                 if (curr_chan == chan) {
8524                         cand = 0;
8525                         break;
8526                 }
8527
8528                 if (chan == 1 || chan == 6 || chan == 11)
8529                         cand = chan;
8530         }
8531
8532         if (cand) {
8533                 wpa_dbg(wpa_s, MSG_DEBUG,
8534                         "P2P: Update Listen channel to %u based on operating channel",
8535                         cand);
8536                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8537         }
8538 }
8539
8540
8541 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8542 {
8543         struct hostapd_config *conf;
8544         struct p2p_go_neg_results params;
8545         struct csa_settings csa_settings;
8546         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8547         int old_freq = current_ssid->frequency;
8548         int ret;
8549
8550         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8551                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8552                 return -1;
8553         }
8554
8555         /*
8556          * TODO: This function may not always work correctly. For example,
8557          * when we have a running GO and a BSS on a DFS channel.
8558          */
8559         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, NULL)) {
8560                 wpa_dbg(wpa_s, MSG_DEBUG,
8561                         "P2P CSA: Failed to select new frequency for GO");
8562                 return -1;
8563         }
8564
8565         if (current_ssid->frequency == params.freq) {
8566                 wpa_dbg(wpa_s, MSG_DEBUG,
8567                         "P2P CSA: Selected same frequency - not moving GO");
8568                 return 0;
8569         }
8570
8571         conf = hostapd_config_defaults();
8572         if (!conf) {
8573                 wpa_dbg(wpa_s, MSG_DEBUG,
8574                         "P2P CSA: Failed to allocate default config");
8575                 return -1;
8576         }
8577
8578         current_ssid->frequency = params.freq;
8579         if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
8580                 wpa_dbg(wpa_s, MSG_DEBUG,
8581                         "P2P CSA: Failed to create new GO config");
8582                 ret = -1;
8583                 goto out;
8584         }
8585
8586         if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
8587                 wpa_dbg(wpa_s, MSG_DEBUG,
8588                         "P2P CSA: CSA to a different band is not supported");
8589                 ret = -1;
8590                 goto out;
8591         }
8592
8593         os_memset(&csa_settings, 0, sizeof(csa_settings));
8594         csa_settings.cs_count = P2P_GO_CSA_COUNT;
8595         csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
8596         csa_settings.freq_params.freq = params.freq;
8597         csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
8598         csa_settings.freq_params.ht_enabled = conf->ieee80211n;
8599         csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
8600
8601         if (conf->ieee80211ac) {
8602                 int freq1 = 0, freq2 = 0;
8603                 u8 chan, opclass;
8604
8605                 if (ieee80211_freq_to_channel_ext(params.freq,
8606                                                   conf->secondary_channel,
8607                                                   conf->vht_oper_chwidth,
8608                                                   &opclass, &chan) ==
8609                     NUM_HOSTAPD_MODES) {
8610                         wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
8611                         ret = -1;
8612                         goto out;
8613                 }
8614
8615                 if (conf->vht_oper_centr_freq_seg0_idx)
8616                         freq1 = ieee80211_chan_to_freq(
8617                                 NULL, opclass,
8618                                 conf->vht_oper_centr_freq_seg0_idx);
8619
8620                 if (conf->vht_oper_centr_freq_seg1_idx)
8621                         freq2 = ieee80211_chan_to_freq(
8622                                 NULL, opclass,
8623                                 conf->vht_oper_centr_freq_seg1_idx);
8624
8625                 if (freq1 < 0 || freq2 < 0) {
8626                         wpa_dbg(wpa_s, MSG_DEBUG,
8627                                 "P2P CSA: Selected invalid VHT center freqs");
8628                         ret = -1;
8629                         goto out;
8630                 }
8631
8632                 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
8633                 csa_settings.freq_params.center_freq1 = freq1;
8634                 csa_settings.freq_params.center_freq2 = freq2;
8635
8636                 switch (conf->vht_oper_chwidth) {
8637                 case VHT_CHANWIDTH_80MHZ:
8638                 case VHT_CHANWIDTH_80P80MHZ:
8639                         csa_settings.freq_params.bandwidth = 80;
8640                         break;
8641                 case VHT_CHANWIDTH_160MHZ:
8642                         csa_settings.freq_params.bandwidth = 160;
8643                         break;
8644                 }
8645         }
8646
8647         ret = ap_switch_channel(wpa_s, &csa_settings);
8648 out:
8649         current_ssid->frequency = old_freq;
8650         hostapd_config_free(conf);
8651         return ret;
8652 }
8653
8654
8655 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8656 {
8657         struct p2p_go_neg_results params;
8658         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8659
8660         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8661
8662         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8663                 current_ssid->frequency);
8664
8665         /* Stop the AP functionality */
8666         /* TODO: Should do this in a way that does not indicated to possible
8667          * P2P Clients in the group that the group is terminated. */
8668         wpa_supplicant_ap_deinit(wpa_s);
8669
8670         /* Reselect the GO frequency */
8671         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, NULL)) {
8672                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8673                 wpas_p2p_group_delete(wpa_s,
8674                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8675                 return;
8676         }
8677         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8678                 params.freq);
8679
8680         if (params.freq &&
8681             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8682                 wpa_printf(MSG_DEBUG,
8683                            "P2P: Selected freq (%u MHz) is not valid for P2P",
8684                            params.freq);
8685                 wpas_p2p_group_delete(wpa_s,
8686                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8687                 return;
8688         }
8689
8690         /* Update the frequency */
8691         current_ssid->frequency = params.freq;
8692         wpa_s->connect_without_scan = current_ssid;
8693         wpa_s->reassociate = 1;
8694         wpa_s->disconnected = 0;
8695         wpa_supplicant_req_scan(wpa_s, 0, 0);
8696 }
8697
8698
8699 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8700 {
8701         struct wpa_supplicant *wpa_s = eloop_ctx;
8702
8703         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8704                 return;
8705
8706         wpas_p2p_go_update_common_freqs(wpa_s);
8707
8708         /* Do not move GO in the middle of a CSA */
8709         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8710                 wpa_printf(MSG_DEBUG,
8711                            "P2P: CSA is in progress - not moving GO");
8712                 return;
8713         }
8714
8715         /*
8716          * First, try a channel switch flow. If it is not supported or fails,
8717          * take down the GO and bring it up again.
8718          */
8719         if (wpas_p2p_move_go_csa(wpa_s) < 0)
8720                 wpas_p2p_move_go_no_csa(wpa_s);
8721 }
8722
8723
8724 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
8725 {
8726         struct wpa_supplicant *wpa_s = eloop_ctx;
8727         struct wpa_used_freq_data *freqs = NULL;
8728         unsigned int num = wpa_s->num_multichan_concurrent;
8729
8730         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8731         if (!freqs)
8732                 return;
8733
8734         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8735
8736         /* Previous attempt to move a GO was not possible -- try again. */
8737         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
8738                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
8739
8740         os_free(freqs);
8741 }
8742
8743
8744 /*
8745  * Consider moving a GO from its currently used frequency:
8746  * 1. It is possible that due to regulatory consideration the frequency
8747  *    can no longer be used and there is a need to evacuate the GO.
8748  * 2. It is possible that due to MCC considerations, it would be preferable
8749  *    to move the GO to a channel that is currently used by some other
8750  *    station interface.
8751  *
8752  * In case a frequency that became invalid is once again valid, cancel a
8753  * previously initiated GO frequency change.
8754  */
8755 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
8756                                             struct wpa_used_freq_data *freqs,
8757                                             unsigned int num)
8758 {
8759         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
8760         unsigned int timeout;
8761         int freq;
8762
8763         wpas_p2p_go_update_common_freqs(wpa_s);
8764
8765         freq = wpa_s->current_ssid->frequency;
8766         for (i = 0, invalid_freq = 0; i < num; i++) {
8767                 if (freqs[i].freq == freq) {
8768                         flags = freqs[i].flags;
8769
8770                         /* The channel is invalid, must change it */
8771                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
8772                                 wpa_dbg(wpa_s, MSG_DEBUG,
8773                                         "P2P: Freq=%d MHz no longer valid for GO",
8774                                         freq);
8775                                 invalid_freq = 1;
8776                         }
8777                 } else if (freqs[i].flags == 0) {
8778                         /* Freq is not used by any other station interface */
8779                         continue;
8780                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
8781                                                freqs[i].freq)) {
8782                         /* Freq is not valid for P2P use cases */
8783                         continue;
8784                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8785                            P2P_GO_FREQ_MOVE_SCM) {
8786                         policy_move = 1;
8787                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8788                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
8789                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
8790                         policy_move = 1;
8791                 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
8792                             P2P_GO_FREQ_MOVE_SCM_ECSA) &&
8793                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
8794                         if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
8795                                 policy_move = 1;
8796                         } else if ((wpa_s->drv_flags &
8797                                     WPA_DRIVER_FLAGS_AP_CSA) &&
8798                                    wpas_p2p_go_clients_support_ecsa(wpa_s)) {
8799                                 u8 chan;
8800
8801                                 /*
8802                                  * We do not support CSA between bands, so move
8803                                  * GO only within the same band.
8804                                  */
8805                                 if (wpa_s->ap_iface->current_mode->mode ==
8806                                     ieee80211_freq_to_chan(freqs[i].freq,
8807                                                            &chan))
8808                                         policy_move = 1;
8809                         }
8810                 }
8811         }
8812
8813         wpa_dbg(wpa_s, MSG_DEBUG,
8814                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
8815                 invalid_freq, policy_move, flags);
8816
8817         /*
8818          * The channel is valid, or we are going to have a policy move, so
8819          * cancel timeout.
8820          */
8821         if (!invalid_freq || policy_move) {
8822                 wpa_dbg(wpa_s, MSG_DEBUG,
8823                         "P2P: Cancel a GO move from freq=%d MHz", freq);
8824                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
8825
8826                 if (wpas_p2p_in_progress(wpa_s)) {
8827                         wpa_dbg(wpa_s, MSG_DEBUG,
8828                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
8829                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
8830                                              wpa_s, NULL);
8831                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
8832                                                wpas_p2p_reconsider_moving_go,
8833                                                wpa_s, NULL);
8834                         return;
8835                 }
8836         }
8837
8838         if (!invalid_freq && (!policy_move || flags != 0)) {
8839                 wpa_dbg(wpa_s, MSG_DEBUG,
8840                         "P2P: Not initiating a GO frequency change");
8841                 return;
8842         }
8843
8844         /*
8845          * Do not consider moving GO if it is in the middle of a CSA. When the
8846          * CSA is finished this flow should be retriggered.
8847          */
8848         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8849                 wpa_dbg(wpa_s, MSG_DEBUG,
8850                         "P2P: Not initiating a GO frequency change - CSA is in progress");
8851                 return;
8852         }
8853
8854         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
8855                 timeout = P2P_GO_FREQ_CHANGE_TIME;
8856         else
8857                 timeout = 0;
8858
8859         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
8860                 freq, timeout);
8861         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
8862         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
8863 }
8864
8865
8866 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
8867                                          struct wpa_used_freq_data *freqs,
8868                                          unsigned int num,
8869                                          enum wpas_p2p_channel_update_trig trig)
8870 {
8871         struct wpa_supplicant *ifs;
8872
8873         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
8874                              NULL);
8875
8876         /*
8877          * Travers all the radio interfaces, and for each GO interface, check
8878          * if there is a need to move the GO from the frequency it is using,
8879          * or in case the frequency is valid again, cancel the evacuation flow.
8880          */
8881         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
8882                          radio_list) {
8883                 if (ifs->current_ssid == NULL ||
8884                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
8885                         continue;
8886
8887                 /*
8888                  * The GO was just started or completed channel switch, no need
8889                  * to move it.
8890                  */
8891                 if (wpa_s == ifs &&
8892                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
8893                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
8894                         wpa_dbg(wpa_s, MSG_DEBUG,
8895                                 "P2P: GO move - schedule re-consideration");
8896                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
8897                                                wpas_p2p_reconsider_moving_go,
8898                                                wpa_s, NULL);
8899                         continue;
8900                 }
8901
8902                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
8903         }
8904 }
8905
8906
8907 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
8908 {
8909         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8910                 return;
8911
8912         wpas_p2p_update_channel_list(wpa_s,
8913                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
8914 }
8915
8916
8917 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
8918 {
8919         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
8920                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
8921                         "the management interface is being removed");
8922                 wpas_p2p_deinit_global(wpa_s->global);
8923         }
8924 }
8925
8926
8927 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
8928 {
8929         if (wpa_s->ap_iface->bss)
8930                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
8931         wpas_p2p_group_deinit(wpa_s);
8932 }