wpa_supplicant/p2p_supplicant.c

   1 /*
   2  * wpa_supplicant - P2P
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi>
   5  *
   6  * This software may be distributed under the terms of the BSD license.
   7  * See README for more details.
   8  */
   9
  10 #include "includes.h"
  11
  12 #include "common.h"
  13 #include "eloop.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/wpa_ctrl.h"
  17 #include "wps/wps_i.h"
  18 #include "p2p/p2p.h"
  19 #include "ap/hostapd.h"
  20 #include "ap/ap_config.h"
  21 #include "ap/sta_info.h"
  22 #include "ap/ap_drv_ops.h"
  23 #include "ap/wps_hostapd.h"
  24 #include "ap/p2p_hostapd.h"
  25 #include "ap/dfs.h"
  26 #include "eapol_supp/eapol_supp_sm.h"
  27 #include "rsn_supp/wpa.h"
  28 #include "wpa_supplicant_i.h"
  29 #include "driver_i.h"
  30 #include "ap.h"
  31 #include "config_ssid.h"
  32 #include "config.h"
  33 #include "notify.h"
  34 #include "scan.h"
  35 #include "bss.h"
  36 #include "offchannel.h"
  37 #include "wps_supplicant.h"
  38 #include "p2p_supplicant.h"
  39 #include "wifi_display.h"
  40
  41
  42 /*
  43  * How many times to try to scan to find the GO before giving up on join
  44  * request.
  45  */
  46 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  47
  48 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
  49
  50 /**
  51  * Defines time interval in seconds when a GO needs to evacuate a frequency that
  52  * it is currently using, but is no longer valid for P2P use cases.
  53  */
  54 #define P2P_GO_FREQ_CHANGE_TIME 5
  55
  56 /**
  57  * Defines CSA parameters which are used when GO evacuates the no longer valid
  58  * channel (and if the driver supports channel switch).
  59  */
  60 #define P2P_GO_CSA_COUNT 7
  61 #define P2P_GO_CSA_BLOCK_TX 0
  62
  63 #ifndef P2P_MAX_CLIENT_IDLE
  64 /*
  65  * How many seconds to try to reconnect to the GO when connection in P2P client
  66  * role has been lost.
  67  */
  68 #define P2P_MAX_CLIENT_IDLE 10
  69 #endif /* P2P_MAX_CLIENT_IDLE */
  70
  71 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  72 /*
  73  * How many seconds to wait for initial 4-way handshake to get completed after
  74  * WPS provisioning step or after the re-invocation of a persistent group on a
  75  * P2P Client.
  76  */
  77 #define P2P_MAX_INITIAL_CONN_WAIT 10
  78 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  79
  80 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
  81 /*
  82  * How many seconds to wait for initial 4-way handshake to get completed after
  83  * WPS provisioning step on the GO. This controls the extra time the P2P
  84  * operation is considered to be in progress (e.g., to delay other scans) after
  85  * WPS provisioning has been completed on the GO during group formation.
  86  */
  87 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
  88 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
  89
  90 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
  91 /*
  92  * How many seconds to wait for initial 4-way handshake to get completed after
  93  * re-invocation of a persistent group on the GO when the client is expected
  94  * to connect automatically (no user interaction).
  95  */
  96 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
  97 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
  98
  99 #define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"
 100
 101 /*
 102  * How many seconds to wait to re-attempt to move GOs, in case previous attempt
 103  * was not possible.
 104  */
 105 #define P2P_RECONSIDER_GO_MOVE_DELAY 30
 106
 107 enum p2p_group_removal_reason {
 108         P2P_GROUP_REMOVAL_UNKNOWN,
 109         P2P_GROUP_REMOVAL_SILENT,
 110         P2P_GROUP_REMOVAL_FORMATION_FAILED,
 111         P2P_GROUP_REMOVAL_REQUESTED,
 112         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
 113         P2P_GROUP_REMOVAL_UNAVAILABLE,
 114         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
 115         P2P_GROUP_REMOVAL_PSK_FAILURE,
 116         P2P_GROUP_REMOVAL_FREQ_CONFLICT,
 117         P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL
 118 };
 119
 120
 121 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
 122 static struct wpa_supplicant *
 123 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
 124                          int go);
 125 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
 126                                const u8 *ssid, size_t ssid_len);
 127 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
 128                                 int *force_freq, int *pref_freq, int go,
 129                                 unsigned int *pref_freq_list,
 130                                 unsigned int *num_pref_freq);
 131 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 132                                    const u8 *ssid, size_t ssid_len);
 133 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 134 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 135                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 136                          int auto_join, int freq,
 137                          const u8 *ssid, size_t ssid_len);
 138 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 139 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 140 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 141 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 142 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 143                                              void *timeout_ctx);
 144 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 145 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 146                                        int group_added);
 147 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 148 static void wpas_stop_listen(void *ctx);
 149 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
 150 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
 151 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 152                                         enum wpa_driver_if_type type);
 153 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
 154                                             int already_deleted);
 155 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
 156                                              struct wpa_used_freq_data *freqs,
 157                                              unsigned int num);
 158 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx);
 159 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq);
 160 static void
 161 wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
 162                              struct wpa_used_freq_data *freqs, unsigned int num,
 163                              enum wpas_p2p_channel_update_trig trig);
 164 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx);
 165
 166
 167 /*
 168  * Get the number of concurrent channels that the HW can operate, but that are
 169  * currently not in use by any of the wpa_supplicant interfaces.
 170  */
 171 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 172 {
 173         int *freqs;
 174         int num, unused;
 175
 176         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 177         if (!freqs)
 178                 return -1;
 179
 180         num = get_shared_radio_freqs(wpa_s, freqs,
 181                                      wpa_s->num_multichan_concurrent);
 182         os_free(freqs);
 183
 184         unused = wpa_s->num_multichan_concurrent - num;
 185         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 186         return unused;
 187 }
 188
 189
 190 /*
 191  * Get the frequencies that are currently in use by one or more of the virtual
 192  * interfaces, and that are also valid for P2P operation.
 193  */
 194 static unsigned int
 195 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 196                           struct wpa_used_freq_data *p2p_freqs,
 197                           unsigned int len)
 198 {
 199         struct wpa_used_freq_data *freqs;
 200         unsigned int num, i, j;
 201
 202         freqs = os_calloc(wpa_s->num_multichan_concurrent,
 203                           sizeof(struct wpa_used_freq_data));
 204         if (!freqs)
 205                 return 0;
 206
 207         num = get_shared_radio_freqs_data(wpa_s, freqs,
 208                                           wpa_s->num_multichan_concurrent);
 209
 210         os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
 211
 212         for (i = 0, j = 0; i < num && j < len; i++) {
 213                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
 214                         p2p_freqs[j++] = freqs[i];
 215         }
 216
 217         os_free(freqs);
 218
 219         dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
 220
 221         return j;
 222 }
 223
 224
 225 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 226                                              int freq)
 227 {
 228         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 229                 return;
 230
 231         /* Use the wpa_s used to control the P2P Device operation */
 232         wpa_s = wpa_s->global->p2p_init_wpa_s;
 233
 234         if (wpa_s->conf->p2p_ignore_shared_freq &&
 235             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 236             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 237                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 238                            freq);
 239                 freq = 0;
 240         }
 241         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 242 }
 243
 244
 245 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 246                                       struct wpa_scan_results *scan_res)
 247 {
 248         size_t i;
 249
 250         if (wpa_s->p2p_scan_work) {
 251                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 252                 wpa_s->p2p_scan_work = NULL;
 253                 radio_work_done(work);
 254         }
 255
 256         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 257                 return;
 258
 259         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 260                    (int) scan_res->num);
 261
 262         for (i = 0; i < scan_res->num; i++) {
 263                 struct wpa_scan_res *bss = scan_res->res[i];
 264                 struct os_reltime time_tmp_age, entry_ts;
 265                 const u8 *ies;
 266                 size_t ies_len;
 267
 268                 time_tmp_age.sec = bss->age / 1000;
 269                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 270                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 271
 272                 ies = (const u8 *) (bss + 1);
 273                 ies_len = bss->ie_len;
 274                 if (bss->beacon_ie_len > 0 &&
 275                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 276                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 277                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 278                                    MACSTR, MAC2STR(bss->bssid));
 279                         ies = ies + ies_len;
 280                         ies_len = bss->beacon_ie_len;
 281                 }
 282
 283
 284                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 285                                          bss->freq, &entry_ts, bss->level,
 286                                          ies, ies_len) > 0)
 287                         break;
 288         }
 289
 290         p2p_scan_res_handled(wpa_s->global->p2p);
 291 }
 292
 293
 294 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 295 {
 296         struct wpa_supplicant *wpa_s = work->wpa_s;
 297         struct wpa_driver_scan_params *params = work->ctx;
 298         int ret;
 299
 300         if (deinit) {
 301                 if (!work->started) {
 302                         wpa_scan_free_params(params);
 303                         return;
 304                 }
 305
 306                 wpa_s->p2p_scan_work = NULL;
 307                 return;
 308         }
 309
 310         ret = wpa_drv_scan(wpa_s, params);
 311         wpa_scan_free_params(params);
 312         work->ctx = NULL;
 313         if (ret) {
 314                 radio_work_done(work);
 315                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 316                 return;
 317         }
 318
 319         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 320         os_get_reltime(&wpa_s->scan_trigger_time);
 321         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 322         wpa_s->own_scan_requested = 1;
 323         wpa_s->p2p_scan_work = work;
 324 }
 325
 326
 327 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 328                                           int freq)
 329 {
 330         if (wpa_s->global->p2p_24ghz_social_channels &&
 331             (freq == 2412 || freq == 2437 || freq == 2462)) {
 332                 /*
 333                  * Search all social channels regardless of whether these have
 334                  * been disabled for P2P operating channel use to avoid missing
 335                  * peers.
 336                  */
 337                 return 1;
 338         }
 339         return p2p_supported_freq(wpa_s->global->p2p, freq);
 340 }
 341
 342
 343 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 344                          unsigned int num_req_dev_types,
 345                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 346 {
 347         struct wpa_supplicant *wpa_s = ctx;
 348         struct wpa_driver_scan_params *params = NULL;
 349         struct wpabuf *wps_ie, *ies;
 350         unsigned int num_channels = 0;
 351         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 352         size_t ielen;
 353         u8 *n, i;
 354
 355         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 356                 return -1;
 357
 358         if (wpa_s->p2p_scan_work) {
 359                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 360                 return -1;
 361         }
 362
 363         params = os_zalloc(sizeof(*params));
 364         if (params == NULL)
 365                 return -1;
 366
 367         /* P2P Wildcard SSID */
 368         params->num_ssids = 1;
 369         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 370         if (n == NULL)
 371                 goto fail;
 372         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 373         params->ssids[0].ssid = n;
 374         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 375
 376         wpa_s->wps->dev.p2p = 1;
 377         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 378                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 379                                         num_req_dev_types, req_dev_types);
 380         if (wps_ie == NULL)
 381                 goto fail;
 382
 383         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 384         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 385         if (ies == NULL) {
 386                 wpabuf_free(wps_ie);
 387                 goto fail;
 388         }
 389         wpabuf_put_buf(ies, wps_ie);
 390         wpabuf_free(wps_ie);
 391
 392         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 393
 394         params->p2p_probe = 1;
 395         n = os_malloc(wpabuf_len(ies));
 396         if (n == NULL) {
 397                 wpabuf_free(ies);
 398                 goto fail;
 399         }
 400         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 401         params->extra_ies = n;
 402         params->extra_ies_len = wpabuf_len(ies);
 403         wpabuf_free(ies);
 404
 405         switch (type) {
 406         case P2P_SCAN_SOCIAL:
 407                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 408                                           sizeof(int));
 409                 if (params->freqs == NULL)
 410                         goto fail;
 411                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 412                         if (wpas_p2p_search_social_channel(
 413                                     wpa_s, social_channels_freq[i]))
 414                                 params->freqs[num_channels++] =
 415                                         social_channels_freq[i];
 416                 }
 417                 params->freqs[num_channels++] = 0;
 418                 break;
 419         case P2P_SCAN_FULL:
 420                 break;
 421         case P2P_SCAN_SPECIFIC:
 422                 params->freqs = os_calloc(2, sizeof(int));
 423                 if (params->freqs == NULL)
 424                         goto fail;
 425                 params->freqs[0] = freq;
 426                 params->freqs[1] = 0;
 427                 break;
 428         case P2P_SCAN_SOCIAL_PLUS_ONE:
 429                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 430                                           sizeof(int));
 431                 if (params->freqs == NULL)
 432                         goto fail;
 433                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 434                         if (wpas_p2p_search_social_channel(
 435                                     wpa_s, social_channels_freq[i]))
 436                                 params->freqs[num_channels++] =
 437                                         social_channels_freq[i];
 438                 }
 439                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 440                         params->freqs[num_channels++] = freq;
 441                 params->freqs[num_channels++] = 0;
 442                 break;
 443         }
 444
 445         radio_remove_works(wpa_s, "p2p-scan", 0);
 446         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 447                            params) < 0)
 448                 goto fail;
 449         return 0;
 450
 451 fail:
 452         wpa_scan_free_params(params);
 453         return -1;
 454 }
 455
 456
 457 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 458 {
 459         switch (p2p_group_interface) {
 460         case P2P_GROUP_INTERFACE_PENDING:
 461                 return WPA_IF_P2P_GROUP;
 462         case P2P_GROUP_INTERFACE_GO:
 463                 return WPA_IF_P2P_GO;
 464         case P2P_GROUP_INTERFACE_CLIENT:
 465                 return WPA_IF_P2P_CLIENT;
 466         }
 467
 468         return WPA_IF_P2P_GROUP;
 469 }
 470
 471
 472 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 473                                                   const u8 *ssid,
 474                                                   size_t ssid_len, int *go)
 475 {
 476         struct wpa_ssid *s;
 477
 478         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 479                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 480                         if (s->disabled != 0 || !s->p2p_group ||
 481                             s->ssid_len != ssid_len ||
 482                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 483                                 continue;
 484                         if (s->mode == WPAS_MODE_P2P_GO &&
 485                             s != wpa_s->current_ssid)
 486                                 continue;
 487                         if (go)
 488                                 *go = s->mode == WPAS_MODE_P2P_GO;
 489                         return wpa_s;
 490                 }
 491         }
 492
 493         return NULL;
 494 }
 495
 496
 497 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 498 {
 499         struct wpa_supplicant *wpa_s = eloop_ctx;
 500         wpa_printf(MSG_DEBUG,
 501                    "P2P: Complete previously requested removal of %s",
 502                    wpa_s->ifname);
 503         wpas_p2p_disconnect(wpa_s);
 504 }
 505
 506
 507 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 508                                       struct wpa_supplicant *calling_wpa_s)
 509 {
 510         if (calling_wpa_s == wpa_s && wpa_s &&
 511             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 512                 /*
 513                  * The calling wpa_s instance is going to be removed. Do that
 514                  * from an eloop callback to keep the instance available until
 515                  * the caller has returned. This my be needed, e.g., to provide
 516                  * control interface responses on the per-interface socket.
 517                  */
 518                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 519                                            wpa_s, NULL) < 0)
 520                         return -1;
 521                 return 0;
 522         }
 523
 524         return wpas_p2p_disconnect(wpa_s);
 525 }
 526
 527
 528 /* Determine total number of clients in active groups where we are the GO */
 529 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 530 {
 531         unsigned int count = 0;
 532         struct wpa_ssid *s;
 533
 534         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 535                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 536                         wpa_printf(MSG_DEBUG,
 537                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 538                                    wpa_s, s, s->disabled, s->p2p_group,
 539                                    s->mode);
 540                         if (!s->disabled && s->p2p_group &&
 541                             s->mode == WPAS_MODE_P2P_GO) {
 542                                 count += p2p_get_group_num_members(
 543                                         wpa_s->p2p_group);
 544                         }
 545                 }
 546         }
 547
 548         return count;
 549 }
 550
 551
 552 static unsigned int p2p_is_active_persistent_group(struct wpa_supplicant *wpa_s)
 553 {
 554         return !wpa_s->p2p_mgmt && wpa_s->current_ssid &&
 555                 !wpa_s->current_ssid->disabled &&
 556                 wpa_s->current_ssid->p2p_group &&
 557                 wpa_s->current_ssid->p2p_persistent_group;
 558 }
 559
 560
 561 static unsigned int p2p_is_active_persistent_go(struct wpa_supplicant *wpa_s)
 562 {
 563         return p2p_is_active_persistent_group(wpa_s) &&
 564                 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO;
 565 }
 566
 567
 568 /* Find an interface for a P2P group where we are the GO */
 569 static struct wpa_supplicant *
 570 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 571 {
 572         struct wpa_supplicant *save = NULL;
 573
 574         if (!wpa_s)
 575                 return NULL;
 576
 577         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 578                 if (!p2p_is_active_persistent_go(wpa_s))
 579                         continue;
 580
 581                 /* Prefer a group with connected clients */
 582                 if (p2p_get_group_num_members(wpa_s->p2p_group))
 583                         return wpa_s;
 584                 save = wpa_s;
 585         }
 586
 587         /* No group with connected clients, so pick the one without (if any) */
 588         return save;
 589 }
 590
 591
 592 static unsigned int p2p_is_active_persistent_cli(struct wpa_supplicant *wpa_s)
 593 {
 594         return p2p_is_active_persistent_group(wpa_s) &&
 595                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
 596 }
 597
 598
 599 /* Find an interface for a P2P group where we are the P2P Client */
 600 static struct wpa_supplicant *
 601 wpas_p2p_get_cli_group(struct wpa_supplicant *wpa_s)
 602 {
 603         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 604                 if (p2p_is_active_persistent_cli(wpa_s))
 605                         return wpa_s;
 606         }
 607
 608         return NULL;
 609 }
 610
 611
 612 /* Find a persistent group where we are the GO */
 613 static struct wpa_ssid *
 614 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
 615 {
 616         struct wpa_ssid *s;
 617
 618         for (s = wpa_s->conf->ssid; s; s = s->next) {
 619                 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
 620                         return s;
 621         }
 622
 623         return NULL;
 624 }
 625
 626
 627 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role,
 628                                 unsigned int *force_freq,
 629                                 unsigned int *pref_freq)
 630 {
 631         struct wpa_supplicant *wpa_s = ctx;
 632         struct wpa_ssid *s;
 633         u8 conncap = P2PS_SETUP_NONE;
 634         unsigned int owned_members = 0;
 635         struct wpa_supplicant *go_wpa_s, *cli_wpa_s;
 636         struct wpa_ssid *persistent_go;
 637         int p2p_no_group_iface;
 638         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
 639
 640         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 641
 642         if (force_freq)
 643                 *force_freq = 0;
 644         if (pref_freq)
 645                 *pref_freq = 0;
 646
 647         size = P2P_MAX_PREF_CHANNELS;
 648         if (force_freq && pref_freq &&
 649             !wpas_p2p_setup_freqs(wpa_s, 0, (int *) force_freq,
 650                                   (int *) pref_freq, 0, pref_freq_list, &size))
 651                 wpas_p2p_set_own_freq_preference(wpa_s,
 652                                                  *force_freq ? *force_freq :
 653                                                  *pref_freq);
 654
 655         /*
 656          * For non-concurrent capable devices:
 657          * If persistent_go, then no new.
 658          * If GO, then no client.
 659          * If client, then no GO.
 660          */
 661         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 662         if (go_wpa_s)
 663                 owned_members = p2p_get_group_num_members(go_wpa_s->p2p_group);
 664         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 665         p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s);
 666         cli_wpa_s = wpas_p2p_get_cli_group(wpa_s);
 667
 668         wpa_printf(MSG_DEBUG,
 669                    "P2P: GO(iface)=%p members=%u CLI(iface)=%p persistent(ssid)=%p",
 670                    go_wpa_s, owned_members, cli_wpa_s, persistent_go);
 671
 672         /* If not concurrent, restrict our choices */
 673         if (p2p_no_group_iface) {
 674                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 675
 676                 if (cli_wpa_s)
 677                         return P2PS_SETUP_NONE;
 678
 679                 if (go_wpa_s) {
 680                         if (role == P2PS_SETUP_CLIENT ||
 681                             incoming == P2PS_SETUP_GROUP_OWNER ||
 682                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 683                                 return P2PS_SETUP_NONE;
 684
 685                         return P2PS_SETUP_GROUP_OWNER;
 686                 }
 687
 688                 if (persistent_go) {
 689                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 690                                 if (!incoming)
 691                                         return P2PS_SETUP_GROUP_OWNER |
 692                                                 P2PS_SETUP_CLIENT;
 693                                 if (incoming == P2PS_SETUP_NEW) {
 694                                         u8 r;
 695
 696                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 697                                             (r & 1))
 698                                                 return P2PS_SETUP_CLIENT;
 699                                         return P2PS_SETUP_GROUP_OWNER;
 700                                 }
 701                         }
 702                 }
 703         }
 704
 705         /* If a required role has been specified, handle it here */
 706         if (role && role != P2PS_SETUP_NEW) {
 707                 switch (incoming) {
 708                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 709                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 710                         /*
 711                          * Peer has an active GO, so if the role allows it and
 712                          * we do not have any active roles, become client.
 713                          */
 714                         if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s &&
 715                             !cli_wpa_s)
 716                                 return P2PS_SETUP_CLIENT;
 717
 718                         /* fall through */
 719
 720                 case P2PS_SETUP_NONE:
 721                 case P2PS_SETUP_NEW:
 722                         conncap = role;
 723                         goto grp_owner;
 724
 725                 case P2PS_SETUP_GROUP_OWNER:
 726                         /*
 727                          * Must be a complimentary role - cannot be a client to
 728                          * more than one peer.
 729                          */
 730                         if (incoming == role || cli_wpa_s)
 731                                 return P2PS_SETUP_NONE;
 732
 733                         return P2PS_SETUP_CLIENT;
 734
 735                 case P2PS_SETUP_CLIENT:
 736                         /* Must be a complimentary role */
 737                         if (incoming != role) {
 738                                 conncap = P2PS_SETUP_GROUP_OWNER;
 739                                 goto grp_owner;
 740                         }
 741
 742                 default:
 743                         return P2PS_SETUP_NONE;
 744                 }
 745         }
 746
 747         /*
 748          * For now, we only will support ownership of one group, and being a
 749          * client of one group. Therefore, if we have either an existing GO
 750          * group, or an existing client group, we will not do a new GO
 751          * negotiation, but rather try to re-use the existing groups.
 752          */
 753         switch (incoming) {
 754         case P2PS_SETUP_NONE:
 755         case P2PS_SETUP_NEW:
 756                 if (cli_wpa_s)
 757                         conncap = P2PS_SETUP_GROUP_OWNER;
 758                 else if (!owned_members)
 759                         conncap = P2PS_SETUP_NEW;
 760                 else if (incoming == P2PS_SETUP_NONE)
 761                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 762                 else
 763                         conncap = P2PS_SETUP_CLIENT;
 764                 break;
 765
 766         case P2PS_SETUP_CLIENT:
 767                 conncap = P2PS_SETUP_GROUP_OWNER;
 768                 break;
 769
 770         case P2PS_SETUP_GROUP_OWNER:
 771                 if (!cli_wpa_s)
 772                         conncap = P2PS_SETUP_CLIENT;
 773                 break;
 774
 775         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 776         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 777                 if (cli_wpa_s)
 778                         conncap = P2PS_SETUP_GROUP_OWNER;
 779                 else {
 780                         u8 r;
 781
 782                         if (os_get_random(&r, sizeof(r)) < 0 ||
 783                             (r & 1))
 784                                 conncap = P2PS_SETUP_CLIENT;
 785                         else
 786                                 conncap = P2PS_SETUP_GROUP_OWNER;
 787                 }
 788                 break;
 789
 790         default:
 791                 return P2PS_SETUP_NONE;
 792         }
 793
 794 grp_owner:
 795         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 796             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 797                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 798                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 799
 800                 s = wpas_p2p_get_persistent_go(wpa_s);
 801                 if (!s && !go_wpa_s && p2p_no_group_iface) {
 802                         p2p_set_intended_addr(wpa_s->global->p2p,
 803                                               wpa_s->own_addr);
 804                 } else if (!s && !go_wpa_s) {
 805                         if (wpas_p2p_add_group_interface(wpa_s,
 806                                                          WPA_IF_P2P_GO) < 0) {
 807                                 wpa_printf(MSG_ERROR,
 808                                            "P2P: Failed to allocate a new interface for the group");
 809                                 return P2PS_SETUP_NONE;
 810                         }
 811                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 812                         p2p_set_intended_addr(wpa_s->global->p2p,
 813                                               wpa_s->pending_interface_addr);
 814                 }
 815         }
 816
 817         return conncap;
 818 }
 819
 820
 821 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 822                                  enum p2p_group_removal_reason removal_reason)
 823 {
 824         struct wpa_ssid *ssid;
 825         char *gtype;
 826         const char *reason;
 827
 828         ssid = wpa_s->current_ssid;
 829         if (ssid == NULL) {
 830                 /*
 831                  * The current SSID was not known, but there may still be a
 832                  * pending P2P group interface waiting for provisioning or a
 833                  * P2P group that is trying to reconnect.
 834                  */
 835                 ssid = wpa_s->conf->ssid;
 836                 while (ssid) {
 837                         if (ssid->p2p_group && ssid->disabled != 2)
 838                                 break;
 839                         ssid = ssid->next;
 840                 }
 841                 if (ssid == NULL &&
 842                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 843                 {
 844                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 845                                    "not found");
 846                         return -1;
 847                 }
 848         }
 849         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 850                 gtype = "GO";
 851         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 852                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 853                 wpa_s->reassociate = 0;
 854                 wpa_s->disconnected = 1;
 855                 gtype = "client";
 856         } else
 857                 gtype = "GO";
 858
 859         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 860                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 861
 862         if (os_strcmp(gtype, "client") == 0) {
 863                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 864                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 865                                                 wpa_s, NULL)) {
 866                         wpa_printf(MSG_DEBUG,
 867                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 868                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 869                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 870                                              wpa_s, NULL);
 871                 }
 872         }
 873
 874         if (wpa_s->cross_connect_in_use) {
 875                 wpa_s->cross_connect_in_use = 0;
 876                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 877                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 878                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 879         }
 880         switch (removal_reason) {
 881         case P2P_GROUP_REMOVAL_REQUESTED:
 882                 reason = " reason=REQUESTED";
 883                 break;
 884         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 885                 reason = " reason=FORMATION_FAILED";
 886                 break;
 887         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 888                 reason = " reason=IDLE";
 889                 break;
 890         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 891                 reason = " reason=UNAVAILABLE";
 892                 break;
 893         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 894                 reason = " reason=GO_ENDING_SESSION";
 895                 break;
 896         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 897                 reason = " reason=PSK_FAILURE";
 898                 break;
 899         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 900                 reason = " reason=FREQ_CONFLICT";
 901                 break;
 902         default:
 903                 reason = "";
 904                 break;
 905         }
 906         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 907                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 908                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 909                                wpa_s->ifname, gtype, reason);
 910         }
 911
 912         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 913                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 914         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 915                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 916         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 917                                  wpa_s->parent, NULL) > 0) {
 918                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 919                            "timeout");
 920                 wpa_s->p2p_in_provisioning = 0;
 921                 wpas_p2p_group_formation_failed(wpa_s, 1);
 922         }
 923
 924         wpa_s->p2p_in_invitation = 0;
 925         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
 926         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
 927
 928         /*
 929          * Make sure wait for the first client does not remain active after the
 930          * group has been removed.
 931          */
 932         wpa_s->global->p2p_go_wait_client.sec = 0;
 933
 934         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 935                 struct wpa_global *global;
 936                 char *ifname;
 937                 enum wpa_driver_if_type type;
 938                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 939                         wpa_s->ifname);
 940                 global = wpa_s->global;
 941                 ifname = os_strdup(wpa_s->ifname);
 942                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 943                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 944                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 945                 wpa_s = global->ifaces;
 946                 if (wpa_s && ifname)
 947                         wpa_drv_if_remove(wpa_s, type, ifname);
 948                 os_free(ifname);
 949                 return 1;
 950         }
 951
 952         if (!wpa_s->p2p_go_group_formation_completed) {
 953                 wpa_s->global->p2p_group_formation = NULL;
 954                 wpa_s->p2p_in_provisioning = 0;
 955         }
 956
 957         wpa_s->show_group_started = 0;
 958         os_free(wpa_s->go_params);
 959         wpa_s->go_params = NULL;
 960
 961         os_free(wpa_s->p2p_group_common_freqs);
 962         wpa_s->p2p_group_common_freqs = NULL;
 963         wpa_s->p2p_group_common_freqs_num = 0;
 964
 965         wpa_s->waiting_presence_resp = 0;
 966
 967         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 968         if (ssid && (ssid->p2p_group ||
 969                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 970                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 971                 int id = ssid->id;
 972                 if (ssid == wpa_s->current_ssid) {
 973                         wpa_sm_set_config(wpa_s->wpa, NULL);
 974                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 975                         wpa_s->current_ssid = NULL;
 976                 }
 977                 /*
 978                  * Networks objects created during any P2P activities are not
 979                  * exposed out as they might/will confuse certain non-P2P aware
 980                  * applications since these network objects won't behave like
 981                  * regular ones.
 982                  *
 983                  * Likewise, we don't send out network removed signals for such
 984                  * network objects.
 985                  */
 986                 wpa_config_remove_network(wpa_s->conf, id);
 987                 wpa_supplicant_clear_status(wpa_s);
 988                 wpa_supplicant_cancel_sched_scan(wpa_s);
 989         } else {
 990                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 991                            "found");
 992         }
 993         if (wpa_s->ap_iface)
 994                 wpa_supplicant_ap_deinit(wpa_s);
 995         else
 996                 wpa_drv_deinit_p2p_cli(wpa_s);
 997
 998         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 999
1000         return 0;
1001 }
1002
1003
1004 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
1005                                      u8 *go_dev_addr,
1006                                      const u8 *ssid, size_t ssid_len)
1007 {
1008         struct wpa_bss *bss;
1009         const u8 *bssid;
1010         struct wpabuf *p2p;
1011         u8 group_capab;
1012         const u8 *addr;
1013
1014         if (wpa_s->go_params)
1015                 bssid = wpa_s->go_params->peer_interface_addr;
1016         else
1017                 bssid = wpa_s->bssid;
1018
1019         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
1020         if (bss == NULL && wpa_s->go_params &&
1021             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
1022                 bss = wpa_bss_get_p2p_dev_addr(
1023                         wpa_s, wpa_s->go_params->peer_device_addr);
1024         if (bss == NULL) {
1025                 u8 iface_addr[ETH_ALEN];
1026                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1027                                            iface_addr) == 0)
1028                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1029         }
1030         if (bss == NULL) {
1031                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1032                            "group is persistent - BSS " MACSTR " not found",
1033                            MAC2STR(bssid));
1034                 return 0;
1035         }
1036
1037         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1038         if (p2p == NULL)
1039                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1040                                                          P2P_IE_VENDOR_TYPE);
1041         if (p2p == NULL) {
1042                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1043                            "group is persistent - BSS " MACSTR
1044                            " did not include P2P IE", MAC2STR(bssid));
1045                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1046                             (u8 *) (bss + 1), bss->ie_len);
1047                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1048                             ((u8 *) bss + 1) + bss->ie_len,
1049                             bss->beacon_ie_len);
1050                 return 0;
1051         }
1052
1053         group_capab = p2p_get_group_capab(p2p);
1054         addr = p2p_get_go_dev_addr(p2p);
1055         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1056                    "group_capab=0x%x", group_capab);
1057         if (addr) {
1058                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1059                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1060                            MAC2STR(addr));
1061         } else
1062                 os_memset(go_dev_addr, 0, ETH_ALEN);
1063         wpabuf_free(p2p);
1064
1065         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1066                    "go_dev_addr=" MACSTR,
1067                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1068
1069         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1070 }
1071
1072
1073 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1074                                            struct wpa_ssid *ssid,
1075                                            const u8 *go_dev_addr)
1076 {
1077         struct wpa_ssid *s;
1078         int changed = 0;
1079
1080         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1081                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1082         for (s = wpa_s->conf->ssid; s; s = s->next) {
1083                 if (s->disabled == 2 &&
1084                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1085                     s->ssid_len == ssid->ssid_len &&
1086                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1087                         break;
1088         }
1089
1090         if (s) {
1091                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1092                            "entry");
1093                 if (ssid->passphrase && !s->passphrase)
1094                         changed = 1;
1095                 else if (ssid->passphrase && s->passphrase &&
1096                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1097                         changed = 1;
1098         } else {
1099                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1100                            "entry");
1101                 changed = 1;
1102                 s = wpa_config_add_network(wpa_s->conf);
1103                 if (s == NULL)
1104                         return -1;
1105
1106                 /*
1107                  * Instead of network_added we emit persistent_group_added
1108                  * notification. Also to keep the defense checks in
1109                  * persistent_group obj registration method, we set the
1110                  * relevant flags in s to designate it as a persistent group.
1111                  */
1112                 s->p2p_group = 1;
1113                 s->p2p_persistent_group = 1;
1114                 wpas_notify_persistent_group_added(wpa_s, s);
1115                 wpa_config_set_network_defaults(s);
1116         }
1117
1118         s->p2p_group = 1;
1119         s->p2p_persistent_group = 1;
1120         s->disabled = 2;
1121         s->bssid_set = 1;
1122         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1123         s->mode = ssid->mode;
1124         s->auth_alg = WPA_AUTH_ALG_OPEN;
1125         s->key_mgmt = WPA_KEY_MGMT_PSK;
1126         s->proto = WPA_PROTO_RSN;
1127         s->pairwise_cipher = WPA_CIPHER_CCMP;
1128         s->export_keys = 1;
1129         if (ssid->passphrase) {
1130                 os_free(s->passphrase);
1131                 s->passphrase = os_strdup(ssid->passphrase);
1132         }
1133         if (ssid->psk_set) {
1134                 s->psk_set = 1;
1135                 os_memcpy(s->psk, ssid->psk, 32);
1136         }
1137         if (s->passphrase && !s->psk_set)
1138                 wpa_config_update_psk(s);
1139         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1140                 os_free(s->ssid);
1141                 s->ssid = os_malloc(ssid->ssid_len);
1142         }
1143         if (s->ssid) {
1144                 s->ssid_len = ssid->ssid_len;
1145                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1146         }
1147         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1148                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1149                 wpa_s->global->add_psk = NULL;
1150                 changed = 1;
1151         }
1152
1153         if (changed && wpa_s->conf->update_config &&
1154             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1155                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1156         }
1157
1158         return s->id;
1159 }
1160
1161
1162 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1163                                                  const u8 *addr)
1164 {
1165         struct wpa_ssid *ssid, *s;
1166         u8 *n;
1167         size_t i;
1168         int found = 0;
1169         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1170
1171         ssid = wpa_s->current_ssid;
1172         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1173             !ssid->p2p_persistent_group)
1174                 return;
1175
1176         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1177                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1178                         continue;
1179
1180                 if (s->ssid_len == ssid->ssid_len &&
1181                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1182                         break;
1183         }
1184
1185         if (s == NULL)
1186                 return;
1187
1188         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1189                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1190                               ETH_ALEN) != 0)
1191                         continue;
1192
1193                 if (i == s->num_p2p_clients - 1)
1194                         return; /* already the most recent entry */
1195
1196                 /* move the entry to mark it most recent */
1197                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1198                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1199                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1200                 os_memcpy(s->p2p_client_list +
1201                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1202                           ETH_ALEN);
1203                 os_memset(s->p2p_client_list +
1204                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1205                           0xff, ETH_ALEN);
1206                 found = 1;
1207                 break;
1208         }
1209
1210         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1211                 n = os_realloc_array(s->p2p_client_list,
1212                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1213                 if (n == NULL)
1214                         return;
1215                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1216                           ETH_ALEN);
1217                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1218                           0xff, ETH_ALEN);
1219                 s->p2p_client_list = n;
1220                 s->num_p2p_clients++;
1221         } else if (!found && s->p2p_client_list) {
1222                 /* Not enough room for an additional entry - drop the oldest
1223                  * entry */
1224                 os_memmove(s->p2p_client_list,
1225                            s->p2p_client_list + 2 * ETH_ALEN,
1226                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1227                 os_memcpy(s->p2p_client_list +
1228                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1229                           addr, ETH_ALEN);
1230                 os_memset(s->p2p_client_list +
1231                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1232                           0xff, ETH_ALEN);
1233         }
1234
1235         if (p2p_wpa_s->conf->update_config &&
1236             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1237                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1238 }
1239
1240
1241 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1242                                    int go, struct wpa_ssid *ssid, int freq,
1243                                    const u8 *psk, const char *passphrase,
1244                                    const u8 *go_dev_addr, int persistent,
1245                                    const char *extra)
1246 {
1247         const char *ssid_txt;
1248         char psk_txt[65];
1249
1250         if (psk)
1251                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1252         else
1253                 psk_txt[0] = '\0';
1254
1255         if (ssid)
1256                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1257         else
1258                 ssid_txt = "";
1259
1260         if (passphrase && passphrase[0] == '\0')
1261                 passphrase = NULL;
1262
1263         /*
1264          * Include PSK/passphrase only in the control interface message and
1265          * leave it out from the debug log entry.
1266          */
1267         wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
1268                             P2P_EVENT_GROUP_STARTED
1269                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1270                             MACSTR "%s%s",
1271                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1272                             psk ? " psk=" : "", psk_txt,
1273                             passphrase ? " passphrase=\"" : "",
1274                             passphrase ? passphrase : "",
1275                             passphrase ? "\"" : "",
1276                             MAC2STR(go_dev_addr),
1277                             persistent ? " [PERSISTENT]" : "", extra);
1278         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1279                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1280                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1281                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1282                    extra);
1283 }
1284
1285
1286 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1287                                            int success, int already_deleted)
1288 {
1289         struct wpa_ssid *ssid;
1290         int client;
1291         int persistent;
1292         u8 go_dev_addr[ETH_ALEN];
1293         int network_id = -1;
1294
1295         /*
1296          * This callback is likely called for the main interface. Update wpa_s
1297          * to use the group interface if a new interface was created for the
1298          * group.
1299          */
1300         if (wpa_s->global->p2p_group_formation)
1301                 wpa_s = wpa_s->global->p2p_group_formation;
1302         if (wpa_s->p2p_go_group_formation_completed) {
1303                 wpa_s->global->p2p_group_formation = NULL;
1304                 wpa_s->p2p_in_provisioning = 0;
1305         }
1306         wpa_s->p2p_in_invitation = 0;
1307         wpa_s->group_formation_reported = 1;
1308
1309         if (!success) {
1310                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1311                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1312                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1313                 if (already_deleted)
1314                         return;
1315                 wpas_p2p_group_delete(wpa_s,
1316                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1317                 return;
1318         }
1319
1320         wpa_msg_global(wpa_s->parent, MSG_INFO,
1321                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1322
1323         ssid = wpa_s->current_ssid;
1324         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1325                 ssid->mode = WPAS_MODE_P2P_GO;
1326                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1327                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1328         }
1329
1330         persistent = 0;
1331         if (ssid) {
1332                 client = ssid->mode == WPAS_MODE_INFRA;
1333                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1334                         persistent = ssid->p2p_persistent_group;
1335                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1336                                   ETH_ALEN);
1337                 } else
1338                         persistent = wpas_p2p_persistent_group(wpa_s,
1339                                                                go_dev_addr,
1340                                                                ssid->ssid,
1341                                                                ssid->ssid_len);
1342         } else {
1343                 client = wpa_s->p2p_group_interface ==
1344                         P2P_GROUP_INTERFACE_CLIENT;
1345                 os_memset(go_dev_addr, 0, ETH_ALEN);
1346         }
1347
1348         wpa_s->show_group_started = 0;
1349         if (client) {
1350                 /*
1351                  * Indicate event only after successfully completed 4-way
1352                  * handshake, i.e., when the interface is ready for data
1353                  * packets.
1354                  */
1355                 wpa_s->show_group_started = 1;
1356         } else {
1357                 wpas_p2p_group_started(wpa_s, 1, ssid,
1358                                        ssid ? ssid->frequency : 0,
1359                                        ssid && ssid->passphrase == NULL &&
1360                                        ssid->psk_set ? ssid->psk : NULL,
1361                                        ssid ? ssid->passphrase : NULL,
1362                                        go_dev_addr, persistent, "");
1363                 wpas_p2p_cross_connect_setup(wpa_s);
1364                 wpas_p2p_set_group_idle_timeout(wpa_s);
1365         }
1366
1367         if (persistent)
1368                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
1369                                                              ssid, go_dev_addr);
1370         else {
1371                 os_free(wpa_s->global->add_psk);
1372                 wpa_s->global->add_psk = NULL;
1373         }
1374         if (network_id < 0 && ssid)
1375                 network_id = ssid->id;
1376         if (!client) {
1377                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1378                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1379         }
1380 }
1381
1382
1383 struct send_action_work {
1384         unsigned int freq;
1385         u8 dst[ETH_ALEN];
1386         u8 src[ETH_ALEN];
1387         u8 bssid[ETH_ALEN];
1388         size_t len;
1389         unsigned int wait_time;
1390         u8 buf[0];
1391 };
1392
1393
1394 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s)
1395 {
1396         struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx;
1397
1398         wpa_printf(MSG_DEBUG,
1399                    "P2P: Free Action frame radio work @%p (freq=%u dst="
1400                    MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)",
1401                    wpa_s->p2p_send_action_work, awork->freq,
1402                    MAC2STR(awork->dst), MAC2STR(awork->src),
1403                    MAC2STR(awork->bssid), awork->wait_time);
1404         wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame",
1405                     awork->buf, awork->len);
1406         os_free(awork);
1407         wpa_s->p2p_send_action_work->ctx = NULL;
1408         radio_work_done(wpa_s->p2p_send_action_work);
1409         wpa_s->p2p_send_action_work = NULL;
1410 }
1411
1412
1413 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1414                                               void *timeout_ctx)
1415 {
1416         struct wpa_supplicant *wpa_s = eloop_ctx;
1417
1418         if (!wpa_s->p2p_send_action_work)
1419                 return;
1420
1421         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1422         wpas_p2p_free_send_action_work(wpa_s);
1423 }
1424
1425
1426 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1427 {
1428         if (wpa_s->p2p_send_action_work) {
1429                 struct send_action_work *awork;
1430
1431                 awork = wpa_s->p2p_send_action_work->ctx;
1432                 wpa_printf(MSG_DEBUG,
1433                            "P2P: Clear Action TX work @%p (wait_time=%u)",
1434                            wpa_s->p2p_send_action_work, awork->wait_time);
1435                 if (awork->wait_time == 0) {
1436                         wpas_p2p_free_send_action_work(wpa_s);
1437                 } else {
1438                         /*
1439                          * In theory, this should not be needed, but number of
1440                          * places in the P2P code is still using non-zero wait
1441                          * time for the last Action frame in the sequence and
1442                          * some of these do not call send_action_done().
1443                          */
1444                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1445                                              wpa_s, NULL);
1446                         eloop_register_timeout(
1447                                 0, awork->wait_time * 1000,
1448                                 wpas_p2p_send_action_work_timeout,
1449                                 wpa_s, NULL);
1450                 }
1451         }
1452 }
1453
1454
1455 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1456                                            unsigned int freq,
1457                                            const u8 *dst, const u8 *src,
1458                                            const u8 *bssid,
1459                                            const u8 *data, size_t data_len,
1460                                            enum offchannel_send_action_result
1461                                            result)
1462 {
1463         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1464
1465         wpas_p2p_action_tx_clear(wpa_s);
1466
1467         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1468                 return;
1469
1470         switch (result) {
1471         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1472                 res = P2P_SEND_ACTION_SUCCESS;
1473                 break;
1474         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1475                 res = P2P_SEND_ACTION_NO_ACK;
1476                 break;
1477         case OFFCHANNEL_SEND_ACTION_FAILED:
1478                 res = P2P_SEND_ACTION_FAILED;
1479                 break;
1480         }
1481
1482         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1483
1484         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1485             wpa_s->pending_pd_before_join &&
1486             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1487              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1488             wpa_s->p2p_fallback_to_go_neg) {
1489                 wpa_s->pending_pd_before_join = 0;
1490                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1491                         "during p2p_connect-auto");
1492                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1493                                P2P_EVENT_FALLBACK_TO_GO_NEG
1494                                "reason=no-ACK-to-PD-Req");
1495                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1496                 return;
1497         }
1498 }
1499
1500
1501 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1502 {
1503         struct wpa_supplicant *wpa_s = work->wpa_s;
1504         struct send_action_work *awork = work->ctx;
1505
1506         if (deinit) {
1507                 if (work->started) {
1508                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1509                                              wpa_s, NULL);
1510                         wpa_s->p2p_send_action_work = NULL;
1511                         offchannel_send_action_done(wpa_s);
1512                 }
1513                 os_free(awork);
1514                 return;
1515         }
1516
1517         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1518                                    awork->bssid, awork->buf, awork->len,
1519                                    awork->wait_time,
1520                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1521                 os_free(awork);
1522                 radio_work_done(work);
1523                 return;
1524         }
1525         wpa_s->p2p_send_action_work = work;
1526 }
1527
1528
1529 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1530                                  unsigned int freq, const u8 *dst,
1531                                  const u8 *src, const u8 *bssid, const u8 *buf,
1532                                  size_t len, unsigned int wait_time)
1533 {
1534         struct send_action_work *awork;
1535
1536         if (wpa_s->p2p_send_action_work) {
1537                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1538                 return -1;
1539         }
1540
1541         awork = os_zalloc(sizeof(*awork) + len);
1542         if (awork == NULL)
1543                 return -1;
1544
1545         awork->freq = freq;
1546         os_memcpy(awork->dst, dst, ETH_ALEN);
1547         os_memcpy(awork->src, src, ETH_ALEN);
1548         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1549         awork->len = len;
1550         awork->wait_time = wait_time;
1551         os_memcpy(awork->buf, buf, len);
1552
1553         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1554                            wpas_send_action_cb, awork) < 0) {
1555                 os_free(awork);
1556                 return -1;
1557         }
1558
1559         return 0;
1560 }
1561
1562
1563 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1564                             const u8 *src, const u8 *bssid, const u8 *buf,
1565                             size_t len, unsigned int wait_time)
1566 {
1567         struct wpa_supplicant *wpa_s = ctx;
1568         int listen_freq = -1, send_freq = -1;
1569
1570         if (wpa_s->p2p_listen_work)
1571                 listen_freq = wpa_s->p2p_listen_work->freq;
1572         if (wpa_s->p2p_send_action_work)
1573                 send_freq = wpa_s->p2p_send_action_work->freq;
1574         if (listen_freq != (int) freq && send_freq != (int) freq) {
1575                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1576                            listen_freq, send_freq);
1577                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1578                                              len, wait_time);
1579         }
1580
1581         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1582         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1583                                       wait_time,
1584                                       wpas_p2p_send_action_tx_status, 1);
1585 }
1586
1587
1588 static void wpas_send_action_done(void *ctx)
1589 {
1590         struct wpa_supplicant *wpa_s = ctx;
1591
1592         if (wpa_s->p2p_send_action_work) {
1593                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1594                                      wpa_s, NULL);
1595                 os_free(wpa_s->p2p_send_action_work->ctx);
1596                 radio_work_done(wpa_s->p2p_send_action_work);
1597                 wpa_s->p2p_send_action_work = NULL;
1598         }
1599
1600         offchannel_send_action_done(wpa_s);
1601 }
1602
1603
1604 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1605                                     struct p2p_go_neg_results *params)
1606 {
1607         if (wpa_s->go_params == NULL) {
1608                 wpa_s->go_params = os_malloc(sizeof(*params));
1609                 if (wpa_s->go_params == NULL)
1610                         return -1;
1611         }
1612         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1613         return 0;
1614 }
1615
1616
1617 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1618                                     struct p2p_go_neg_results *res)
1619 {
1620         wpa_s->group_formation_reported = 0;
1621         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1622                    " dev_addr " MACSTR " wps_method %d",
1623                    MAC2STR(res->peer_interface_addr),
1624                    MAC2STR(res->peer_device_addr), res->wps_method);
1625         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1626                           res->ssid, res->ssid_len);
1627         wpa_supplicant_ap_deinit(wpa_s);
1628         wpas_copy_go_neg_results(wpa_s, res);
1629         if (res->wps_method == WPS_PBC) {
1630                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1631 #ifdef CONFIG_WPS_NFC
1632         } else if (res->wps_method == WPS_NFC) {
1633                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1634                                    res->peer_interface_addr,
1635                                    wpa_s->parent->p2p_oob_dev_pw,
1636                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1637                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1638                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1639                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1640                                    NULL,
1641                                    NULL, 0, 0);
1642 #endif /* CONFIG_WPS_NFC */
1643         } else {
1644                 u16 dev_pw_id = DEV_PW_DEFAULT;
1645                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1646                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1647                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1648                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1649                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1650                                    wpa_s->p2p_pin, 1, dev_pw_id);
1651         }
1652 }
1653
1654
1655 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1656                                   struct wpa_ssid *ssid)
1657 {
1658         struct wpa_ssid *persistent;
1659         struct psk_list_entry *psk;
1660         struct hostapd_data *hapd;
1661
1662         if (!wpa_s->ap_iface)
1663                 return;
1664
1665         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1666                                              ssid->ssid_len);
1667         if (persistent == NULL)
1668                 return;
1669
1670         hapd = wpa_s->ap_iface->bss[0];
1671
1672         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1673                          list) {
1674                 struct hostapd_wpa_psk *hpsk;
1675
1676                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1677                         MACSTR " psk=%d",
1678                         MAC2STR(psk->addr), psk->p2p);
1679                 hpsk = os_zalloc(sizeof(*hpsk));
1680                 if (hpsk == NULL)
1681                         break;
1682                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1683                 if (psk->p2p)
1684                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1685                 else
1686                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1687                 hpsk->next = hapd->conf->ssid.wpa_psk;
1688                 hapd->conf->ssid.wpa_psk = hpsk;
1689         }
1690 }
1691
1692
1693 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1694 {
1695         unsigned int i;
1696
1697         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1698                 wpa_s->p2p_group_common_freqs_num);
1699
1700         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1701                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1702                         i, wpa_s->p2p_group_common_freqs[i]);
1703 }
1704
1705
1706 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1707                                            struct p2p_go_neg_results *params)
1708 {
1709         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1710
1711         wpa_s->p2p_group_common_freqs_num = 0;
1712         os_free(wpa_s->p2p_group_common_freqs);
1713         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1714         if (!wpa_s->p2p_group_common_freqs)
1715                 return;
1716
1717         for (i = 0; i < len; i++) {
1718                 if (!wpa_s->go_params->freq_list[i])
1719                         break;
1720                 wpa_s->p2p_group_common_freqs[i] =
1721                         wpa_s->go_params->freq_list[i];
1722         }
1723         wpa_s->p2p_group_common_freqs_num = i;
1724 }
1725
1726
1727 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1728 {
1729 #ifndef CONFIG_NO_CONFIG_WRITE
1730         if (wpa_s->parent->conf->update_config &&
1731             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1732                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1733 #endif /* CONFIG_NO_CONFIG_WRITE */
1734 }
1735
1736
1737 static void p2p_go_configured(void *ctx, void *data)
1738 {
1739         struct wpa_supplicant *wpa_s = ctx;
1740         struct p2p_go_neg_results *params = data;
1741         struct wpa_ssid *ssid;
1742         int network_id = -1;
1743
1744         wpa_s->ap_configured_cb = NULL;
1745         wpa_s->ap_configured_cb_ctx = NULL;
1746         wpa_s->ap_configured_cb_data = NULL;
1747         if (!wpa_s->go_params) {
1748                 wpa_printf(MSG_ERROR,
1749                            "P2P: p2p_go_configured() called with wpa_s->go_params == NULL");
1750                 return;
1751         }
1752
1753         p2p_go_save_group_common_freqs(wpa_s, params);
1754         p2p_go_dump_common_freqs(wpa_s);
1755
1756         ssid = wpa_s->current_ssid;
1757         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1758                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1759                 if (wpa_s->global->p2p_group_formation == wpa_s)
1760                         wpa_s->global->p2p_group_formation = NULL;
1761                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1762                                        params->passphrase[0] == '\0' ?
1763                                        params->psk : NULL,
1764                                        params->passphrase,
1765                                        wpa_s->global->p2p_dev_addr,
1766                                        params->persistent_group, "");
1767                 wpa_s->group_formation_reported = 1;
1768
1769                 if (wpa_s->parent->p2ps_method_config_any) {
1770                         if (is_zero_ether_addr(wpa_s->parent->p2ps_join_addr)) {
1771                                 wpa_dbg(wpa_s, MSG_DEBUG,
1772                                         "P2PS: Setting default PIN for ANY");
1773                                 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1774                                                           "12345670", NULL, 0,
1775                                                           0);
1776                         } else {
1777                                 wpa_dbg(wpa_s, MSG_DEBUG,
1778                                         "P2PS: Setting default PIN for " MACSTR,
1779                                         MAC2STR(wpa_s->parent->p2ps_join_addr));
1780                                 wpa_supplicant_ap_wps_pin(
1781                                         wpa_s, wpa_s->parent->p2ps_join_addr,
1782                                         "12345670", NULL, 0, 0);
1783                         }
1784                         wpa_s->parent->p2ps_method_config_any = 0;
1785                 }
1786
1787                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1788                 if (params->persistent_group) {
1789                         network_id = wpas_p2p_store_persistent_group(
1790                                 wpa_s->parent, ssid,
1791                                 wpa_s->global->p2p_dev_addr);
1792                         wpas_p2p_add_psk_list(wpa_s, ssid);
1793                 }
1794                 if (network_id < 0)
1795                         network_id = ssid->id;
1796                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1797                 wpas_p2p_cross_connect_setup(wpa_s);
1798                 wpas_p2p_set_group_idle_timeout(wpa_s);
1799
1800                 if (wpa_s->p2p_first_connection_timeout) {
1801                         wpa_dbg(wpa_s, MSG_DEBUG,
1802                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1803                                 wpa_s->p2p_first_connection_timeout);
1804                         wpa_s->p2p_go_group_formation_completed = 0;
1805                         wpa_s->global->p2p_group_formation = wpa_s;
1806                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1807                                              wpa_s->parent, NULL);
1808                         eloop_register_timeout(
1809                                 wpa_s->p2p_first_connection_timeout, 0,
1810                                 wpas_p2p_group_formation_timeout,
1811                                 wpa_s->parent, NULL);
1812                 }
1813
1814                 return;
1815         }
1816
1817         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1818         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1819                                               params->peer_interface_addr)) {
1820                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1821                            "filtering");
1822                 return;
1823         }
1824         if (params->wps_method == WPS_PBC) {
1825                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1826                                           params->peer_device_addr);
1827 #ifdef CONFIG_WPS_NFC
1828         } else if (params->wps_method == WPS_NFC) {
1829                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1830                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1831                     !wpa_s->parent->p2p_oob_dev_pw) {
1832                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1833                         return;
1834                 }
1835                 wpas_ap_wps_add_nfc_pw(
1836                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1837                         wpa_s->parent->p2p_oob_dev_pw,
1838                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1839                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1840 #endif /* CONFIG_WPS_NFC */
1841         } else if (wpa_s->p2p_pin[0])
1842                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1843                                           wpa_s->p2p_pin, NULL, 0, 0);
1844         os_free(wpa_s->go_params);
1845         wpa_s->go_params = NULL;
1846 }
1847
1848
1849 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1850                               struct p2p_go_neg_results *params,
1851                               int group_formation)
1852 {
1853         struct wpa_ssid *ssid;
1854
1855         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1856         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1857                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1858                         "results");
1859                 return;
1860         }
1861
1862         ssid = wpa_config_add_network(wpa_s->conf);
1863         if (ssid == NULL) {
1864                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1865                 return;
1866         }
1867
1868         wpa_s->show_group_started = 0;
1869         wpa_s->p2p_go_group_formation_completed = 0;
1870         wpa_s->group_formation_reported = 0;
1871         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1872
1873         wpa_config_set_network_defaults(ssid);
1874         ssid->temporary = 1;
1875         ssid->p2p_group = 1;
1876         ssid->p2p_persistent_group = params->persistent_group;
1877         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1878                 WPAS_MODE_P2P_GO;
1879         ssid->frequency = params->freq;
1880         ssid->ht40 = params->ht40;
1881         ssid->vht = params->vht;
1882         ssid->max_oper_chwidth = params->max_oper_chwidth;
1883         ssid->vht_center_freq2 = params->vht_center_freq2;
1884         ssid->ssid = os_zalloc(params->ssid_len + 1);
1885         if (ssid->ssid) {
1886                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1887                 ssid->ssid_len = params->ssid_len;
1888         }
1889         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1890         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1891         ssid->proto = WPA_PROTO_RSN;
1892         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1893         ssid->group_cipher = WPA_CIPHER_CCMP;
1894         if (params->freq > 56160) {
1895                 /*
1896                  * Enable GCMP instead of CCMP as pairwise_cipher and
1897                  * group_cipher in 60 GHz.
1898                  */
1899                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1900                 ssid->group_cipher = WPA_CIPHER_GCMP;
1901                 /* P2P GO in 60 GHz is always a PCP (PBSS) */
1902                 ssid->pbss = 1;
1903         }
1904         if (os_strlen(params->passphrase) > 0) {
1905                 ssid->passphrase = os_strdup(params->passphrase);
1906                 if (ssid->passphrase == NULL) {
1907                         wpa_msg_global(wpa_s, MSG_ERROR,
1908                                        "P2P: Failed to copy passphrase for GO");
1909                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1910                         return;
1911                 }
1912         } else
1913                 ssid->passphrase = NULL;
1914         ssid->psk_set = params->psk_set;
1915         if (ssid->psk_set)
1916                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1917         else if (ssid->passphrase)
1918                 wpa_config_update_psk(ssid);
1919         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1920
1921         wpa_s->ap_configured_cb = p2p_go_configured;
1922         wpa_s->ap_configured_cb_ctx = wpa_s;
1923         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1924         wpa_s->scan_req = NORMAL_SCAN_REQ;
1925         wpa_s->connect_without_scan = ssid;
1926         wpa_s->reassociate = 1;
1927         wpa_s->disconnected = 0;
1928         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1929                 "start GO)");
1930         wpa_supplicant_req_scan(wpa_s, 0, 0);
1931 }
1932
1933
1934 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1935                                   const struct wpa_supplicant *src)
1936 {
1937         struct wpa_config *d;
1938         const struct wpa_config *s;
1939
1940         d = dst->conf;
1941         s = src->conf;
1942
1943 #define C(n) if (s->n) d->n = os_strdup(s->n)
1944         C(device_name);
1945         C(manufacturer);
1946         C(model_name);
1947         C(model_number);
1948         C(serial_number);
1949         C(config_methods);
1950 #undef C
1951
1952         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1953         os_memcpy(d->sec_device_type, s->sec_device_type,
1954                   sizeof(d->sec_device_type));
1955         d->num_sec_device_types = s->num_sec_device_types;
1956
1957         d->p2p_group_idle = s->p2p_group_idle;
1958         d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
1959         d->p2p_intra_bss = s->p2p_intra_bss;
1960         d->persistent_reconnect = s->persistent_reconnect;
1961         d->max_num_sta = s->max_num_sta;
1962         d->pbc_in_m1 = s->pbc_in_m1;
1963         d->ignore_old_scan_res = s->ignore_old_scan_res;
1964         d->beacon_int = s->beacon_int;
1965         d->dtim_period = s->dtim_period;
1966         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1967         d->disassoc_low_ack = s->disassoc_low_ack;
1968         d->disable_scan_offload = s->disable_scan_offload;
1969         d->passive_scan = s->passive_scan;
1970
1971         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1972                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1973                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1974         }
1975         d->p2p_cli_probe = s->p2p_cli_probe;
1976 }
1977
1978
1979 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1980                                       char *ifname, size_t len)
1981 {
1982         char *ifname_ptr = wpa_s->ifname;
1983
1984         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1985                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1986                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1987         }
1988
1989         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1990         if (os_strlen(ifname) >= IFNAMSIZ &&
1991             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1992                 int res;
1993
1994                 /* Try to avoid going over the IFNAMSIZ length limit */
1995                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1996                 if (os_snprintf_error(len, res) && len)
1997                         ifname[len - 1] = '\0';
1998         }
1999 }
2000
2001
2002 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
2003                                         enum wpa_driver_if_type type)
2004 {
2005         char ifname[120], force_ifname[120];
2006
2007         if (wpa_s->pending_interface_name[0]) {
2008                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
2009                            "- skip creation of a new one");
2010                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
2011                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
2012                                    "unknown?! ifname='%s'",
2013                                    wpa_s->pending_interface_name);
2014                         return -1;
2015                 }
2016                 return 0;
2017         }
2018
2019         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
2020         force_ifname[0] = '\0';
2021
2022         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
2023                    ifname);
2024         wpa_s->p2p_group_idx++;
2025
2026         wpa_s->pending_interface_type = type;
2027         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
2028                            wpa_s->pending_interface_addr, NULL) < 0) {
2029                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
2030                            "interface");
2031                 return -1;
2032         }
2033
2034         if (force_ifname[0]) {
2035                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2036                            force_ifname);
2037                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2038                            sizeof(wpa_s->pending_interface_name));
2039         } else
2040                 os_strlcpy(wpa_s->pending_interface_name, ifname,
2041                            sizeof(wpa_s->pending_interface_name));
2042         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2043                    MACSTR, wpa_s->pending_interface_name,
2044                    MAC2STR(wpa_s->pending_interface_addr));
2045
2046         return 0;
2047 }
2048
2049
2050 static void wpas_p2p_remove_pending_group_interface(
2051         struct wpa_supplicant *wpa_s)
2052 {
2053         if (!wpa_s->pending_interface_name[0] ||
2054             is_zero_ether_addr(wpa_s->pending_interface_addr))
2055                 return; /* No pending virtual interface */
2056
2057         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2058                    wpa_s->pending_interface_name);
2059         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2060                           wpa_s->pending_interface_name);
2061         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2062         wpa_s->pending_interface_name[0] = '\0';
2063         wpa_s->global->pending_group_iface_for_p2ps = 0;
2064 }
2065
2066
2067 static struct wpa_supplicant *
2068 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2069 {
2070         struct wpa_interface iface;
2071         struct wpa_supplicant *group_wpa_s;
2072
2073         if (!wpa_s->pending_interface_name[0]) {
2074                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2075                 if (!wpas_p2p_create_iface(wpa_s))
2076                         return NULL;
2077                 /*
2078                  * Something has forced us to remove the pending interface; try
2079                  * to create a new one and hope for the best that we will get
2080                  * the same local address.
2081                  */
2082                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2083                                                  WPA_IF_P2P_CLIENT) < 0)
2084                         return NULL;
2085         }
2086
2087         os_memset(&iface, 0, sizeof(iface));
2088         iface.ifname = wpa_s->pending_interface_name;
2089         iface.driver = wpa_s->driver->name;
2090         if (wpa_s->conf->ctrl_interface == NULL &&
2091             wpa_s->parent != wpa_s &&
2092             wpa_s->p2p_mgmt &&
2093             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2094                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2095         else
2096                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2097         iface.driver_param = wpa_s->conf->driver_param;
2098         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2099         if (group_wpa_s == NULL) {
2100                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2101                            "wpa_supplicant interface");
2102                 return NULL;
2103         }
2104         wpa_s->pending_interface_name[0] = '\0';
2105         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2106                 P2P_GROUP_INTERFACE_CLIENT;
2107         wpa_s->global->p2p_group_formation = group_wpa_s;
2108         wpa_s->global->pending_group_iface_for_p2ps = 0;
2109
2110         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2111
2112         return group_wpa_s;
2113 }
2114
2115
2116 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2117                                              void *timeout_ctx)
2118 {
2119         struct wpa_supplicant *wpa_s = eloop_ctx;
2120         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2121         wpas_p2p_group_formation_failed(wpa_s, 0);
2122 }
2123
2124
2125 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2126                                             int already_deleted)
2127 {
2128         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2129                              wpa_s->parent, NULL);
2130         if (wpa_s->global->p2p)
2131                 p2p_group_formation_failed(wpa_s->global->p2p);
2132         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2133 }
2134
2135
2136 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2137 {
2138         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2139         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2140                              wpa_s->parent, NULL);
2141         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2142                                wpa_s->parent, NULL);
2143         wpa_s->global->p2p_fail_on_wps_complete = 0;
2144 }
2145
2146
2147 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2148 {
2149         if (wpa_s->global->p2p_group_formation != wpa_s)
2150                 return;
2151         /* Speed up group formation timeout since this cannot succeed */
2152         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2153                              wpa_s->parent, NULL);
2154         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2155                                wpa_s->parent, NULL);
2156 }
2157
2158
2159 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2160 {
2161         struct wpa_supplicant *wpa_s = ctx;
2162
2163         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2164                 wpa_drv_cancel_remain_on_channel(wpa_s);
2165                 wpa_s->off_channel_freq = 0;
2166                 wpa_s->roc_waiting_drv_freq = 0;
2167         }
2168
2169         if (res->status) {
2170                 wpa_msg_global(wpa_s, MSG_INFO,
2171                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2172                                res->status);
2173                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2174                 wpas_p2p_remove_pending_group_interface(wpa_s);
2175                 return;
2176         }
2177
2178         if (!res->role_go) {
2179                 /* Inform driver of the operating channel of GO. */
2180                 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2181         }
2182
2183         if (wpa_s->p2p_go_ht40)
2184                 res->ht40 = 1;
2185         if (wpa_s->p2p_go_vht)
2186                 res->vht = 1;
2187         res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth;
2188         res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2;
2189
2190         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2191                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2192                        " wps_method=%s",
2193                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2194                        MAC2STR(res->peer_device_addr),
2195                        MAC2STR(res->peer_interface_addr),
2196                        p2p_wps_method_text(res->wps_method));
2197         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2198
2199         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2200                 struct wpa_ssid *ssid;
2201                 ssid = wpa_config_get_network(wpa_s->conf,
2202                                               wpa_s->p2p_persistent_id);
2203                 if (ssid && ssid->disabled == 2 &&
2204                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2205                         size_t len = os_strlen(ssid->passphrase);
2206                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2207                                    "on requested persistent group");
2208                         os_memcpy(res->passphrase, ssid->passphrase, len);
2209                         res->passphrase[len] = '\0';
2210                 }
2211         }
2212
2213         if (wpa_s->create_p2p_iface) {
2214                 struct wpa_supplicant *group_wpa_s =
2215                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2216                 if (group_wpa_s == NULL) {
2217                         wpas_p2p_remove_pending_group_interface(wpa_s);
2218                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2219                                              wpa_s, NULL);
2220                         wpas_p2p_group_formation_failed(wpa_s, 1);
2221                         return;
2222                 }
2223                 if (group_wpa_s != wpa_s) {
2224                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2225                                   sizeof(group_wpa_s->p2p_pin));
2226                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2227                 }
2228                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2229                 wpa_s->pending_interface_name[0] = '\0';
2230                 group_wpa_s->p2p_in_provisioning = 1;
2231
2232                 if (res->role_go) {
2233                         wpas_start_wps_go(group_wpa_s, res, 1);
2234                 } else {
2235                         os_get_reltime(&group_wpa_s->scan_min_time);
2236                         wpas_start_wps_enrollee(group_wpa_s, res);
2237                 }
2238         } else {
2239                 wpa_s->p2p_in_provisioning = 1;
2240                 wpa_s->global->p2p_group_formation = wpa_s;
2241
2242                 if (res->role_go) {
2243                         wpas_start_wps_go(wpa_s, res, 1);
2244                 } else {
2245                         os_get_reltime(&wpa_s->scan_min_time);
2246                         wpas_start_wps_enrollee(ctx, res);
2247                 }
2248         }
2249
2250         wpa_s->p2p_long_listen = 0;
2251         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2252
2253         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2254         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2255                                (res->peer_config_timeout % 100) * 10000,
2256                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2257 }
2258
2259
2260 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2261                                u8 go_intent)
2262 {
2263         struct wpa_supplicant *wpa_s = ctx;
2264         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2265                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2266                        dev_passwd_id, go_intent);
2267
2268         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2269 }
2270
2271
2272 static void wpas_dev_found(void *ctx, const u8 *addr,
2273                            const struct p2p_peer_info *info,
2274                            int new_device)
2275 {
2276 #ifndef CONFIG_NO_STDOUT_DEBUG
2277         struct wpa_supplicant *wpa_s = ctx;
2278         char devtype[WPS_DEV_TYPE_BUFSIZE];
2279         char *wfd_dev_info_hex = NULL;
2280
2281 #ifdef CONFIG_WIFI_DISPLAY
2282         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2283                                                     WFD_SUBELEM_DEVICE_INFO);
2284 #endif /* CONFIG_WIFI_DISPLAY */
2285
2286         if (info->p2ps_instance) {
2287                 char str[256];
2288                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2289                 size_t len = wpabuf_len(info->p2ps_instance);
2290
2291                 while (len) {
2292                         u32 id;
2293                         u16 methods;
2294                         u8 str_len;
2295
2296                         if (len < 4 + 2 + 1)
2297                                 break;
2298                         id = WPA_GET_LE32(buf);
2299                         buf += sizeof(u32);
2300                         methods = WPA_GET_BE16(buf);
2301                         buf += sizeof(u16);
2302                         str_len = *buf++;
2303                         if (str_len > len - 4 - 2 - 1)
2304                                 break;
2305                         os_memcpy(str, buf, str_len);
2306                         str[str_len] = '\0';
2307                         buf += str_len;
2308                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2309
2310                         wpa_msg_global(wpa_s, MSG_INFO,
2311                                        P2P_EVENT_DEVICE_FOUND MACSTR
2312                                        " p2p_dev_addr=" MACSTR
2313                                        " pri_dev_type=%s name='%s'"
2314                                        " config_methods=0x%x"
2315                                        " dev_capab=0x%x"
2316                                        " group_capab=0x%x"
2317                                        " adv_id=%x asp_svc=%s%s",
2318                                        MAC2STR(addr),
2319                                        MAC2STR(info->p2p_device_addr),
2320                                        wps_dev_type_bin2str(
2321                                                info->pri_dev_type,
2322                                                devtype, sizeof(devtype)),
2323                                        info->device_name, methods,
2324                                        info->dev_capab, info->group_capab,
2325                                        id, str,
2326                                        info->vendor_elems ?
2327                                        " vendor_elems=1" : "");
2328                 }
2329                 goto done;
2330         }
2331
2332         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2333                        " p2p_dev_addr=" MACSTR
2334                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2335                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2336                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2337                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2338                                             sizeof(devtype)),
2339                        info->device_name, info->config_methods,
2340                        info->dev_capab, info->group_capab,
2341                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2342                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2343                        info->vendor_elems ? " vendor_elems=1" : "",
2344                        new_device);
2345
2346 done:
2347         os_free(wfd_dev_info_hex);
2348 #endif /* CONFIG_NO_STDOUT_DEBUG */
2349
2350         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2351 }
2352
2353
2354 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2355 {
2356         struct wpa_supplicant *wpa_s = ctx;
2357
2358         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2359                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2360
2361         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2362 }
2363
2364
2365 static void wpas_find_stopped(void *ctx)
2366 {
2367         struct wpa_supplicant *wpa_s = ctx;
2368         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2369         wpas_notify_p2p_find_stopped(wpa_s);
2370 }
2371
2372
2373 struct wpas_p2p_listen_work {
2374         unsigned int freq;
2375         unsigned int duration;
2376         struct wpabuf *probe_resp_ie;
2377 };
2378
2379
2380 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2381 {
2382         if (lwork == NULL)
2383                 return;
2384         wpabuf_free(lwork->probe_resp_ie);
2385         os_free(lwork);
2386 }
2387
2388
2389 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2390 {
2391         struct wpas_p2p_listen_work *lwork;
2392
2393         if (!wpa_s->p2p_listen_work)
2394                 return;
2395
2396         lwork = wpa_s->p2p_listen_work->ctx;
2397         wpas_p2p_listen_work_free(lwork);
2398         radio_work_done(wpa_s->p2p_listen_work);
2399         wpa_s->p2p_listen_work = NULL;
2400 }
2401
2402
2403 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2404 {
2405         struct wpa_supplicant *wpa_s = work->wpa_s;
2406         struct wpas_p2p_listen_work *lwork = work->ctx;
2407         unsigned int duration;
2408
2409         if (deinit) {
2410                 if (work->started) {
2411                         wpa_s->p2p_listen_work = NULL;
2412                         wpas_stop_listen(wpa_s);
2413                 }
2414                 wpas_p2p_listen_work_free(lwork);
2415                 return;
2416         }
2417
2418         wpa_s->p2p_listen_work = work;
2419
2420         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2421
2422         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2423                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2424                            "report received Probe Request frames");
2425                 wpas_p2p_listen_work_done(wpa_s);
2426                 return;
2427         }
2428
2429         wpa_s->pending_listen_freq = lwork->freq;
2430         wpa_s->pending_listen_duration = lwork->duration;
2431
2432         duration = lwork->duration;
2433 #ifdef CONFIG_TESTING_OPTIONS
2434         if (wpa_s->extra_roc_dur) {
2435                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2436                            duration, duration + wpa_s->extra_roc_dur);
2437                 duration += wpa_s->extra_roc_dur;
2438         }
2439 #endif /* CONFIG_TESTING_OPTIONS */
2440
2441         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2442                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2443                            "to remain on channel (%u MHz) for Listen "
2444                            "state", lwork->freq);
2445                 wpas_p2p_listen_work_done(wpa_s);
2446                 wpa_s->pending_listen_freq = 0;
2447                 return;
2448         }
2449         wpa_s->off_channel_freq = 0;
2450         wpa_s->roc_waiting_drv_freq = lwork->freq;
2451 }
2452
2453
2454 static int wpas_start_listen(void *ctx, unsigned int freq,
2455                              unsigned int duration,
2456                              const struct wpabuf *probe_resp_ie)
2457 {
2458         struct wpa_supplicant *wpa_s = ctx;
2459         struct wpas_p2p_listen_work *lwork;
2460
2461         if (wpa_s->p2p_listen_work) {
2462                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2463                 return -1;
2464         }
2465
2466         lwork = os_zalloc(sizeof(*lwork));
2467         if (lwork == NULL)
2468                 return -1;
2469         lwork->freq = freq;
2470         lwork->duration = duration;
2471         if (probe_resp_ie) {
2472                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2473                 if (lwork->probe_resp_ie == NULL) {
2474                         wpas_p2p_listen_work_free(lwork);
2475                         return -1;
2476                 }
2477         }
2478
2479         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2480                            lwork) < 0) {
2481                 wpas_p2p_listen_work_free(lwork);
2482                 return -1;
2483         }
2484
2485         return 0;
2486 }
2487
2488
2489 static void wpas_stop_listen(void *ctx)
2490 {
2491         struct wpa_supplicant *wpa_s = ctx;
2492         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2493                 wpa_drv_cancel_remain_on_channel(wpa_s);
2494                 wpa_s->off_channel_freq = 0;
2495                 wpa_s->roc_waiting_drv_freq = 0;
2496         }
2497         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2498
2499         /*
2500          * Don't cancel Probe Request RX reporting for a connected P2P Client
2501          * handling Probe Request frames.
2502          */
2503         if (!wpa_s->p2p_cli_probe)
2504                 wpa_drv_probe_req_report(wpa_s, 0);
2505
2506         wpas_p2p_listen_work_done(wpa_s);
2507 }
2508
2509
2510 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2511                                 unsigned int freq)
2512 {
2513         struct wpa_supplicant *wpa_s = ctx;
2514         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2515                                  freq);
2516 }
2517
2518
2519 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2520                                          const u8 *peer, const char *params,
2521                                          unsigned int generated_pin)
2522 {
2523         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2524                        " %08d%s", MAC2STR(peer), generated_pin, params);
2525 }
2526
2527
2528 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2529                                         const u8 *peer, const char *params)
2530 {
2531         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2532                        "%s", MAC2STR(peer), params);
2533 }
2534
2535
2536 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2537                                const u8 *dev_addr, const u8 *pri_dev_type,
2538                                const char *dev_name, u16 supp_config_methods,
2539                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2540                                size_t group_id_len)
2541 {
2542         struct wpa_supplicant *wpa_s = ctx;
2543         char devtype[WPS_DEV_TYPE_BUFSIZE];
2544         char params[300];
2545         u8 empty_dev_type[8];
2546         unsigned int generated_pin = 0;
2547         struct wpa_supplicant *group = NULL;
2548         int res;
2549
2550         if (group_id) {
2551                 for (group = wpa_s->global->ifaces; group; group = group->next)
2552                 {
2553                         struct wpa_ssid *s = group->current_ssid;
2554                         if (s != NULL &&
2555                             s->mode == WPAS_MODE_P2P_GO &&
2556                             group_id_len - ETH_ALEN == s->ssid_len &&
2557                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2558                                       s->ssid_len) == 0)
2559                                 break;
2560                 }
2561         }
2562
2563         if (pri_dev_type == NULL) {
2564                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2565                 pri_dev_type = empty_dev_type;
2566         }
2567         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2568                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2569                           "dev_capab=0x%x group_capab=0x%x%s%s",
2570                           MAC2STR(dev_addr),
2571                           wps_dev_type_bin2str(pri_dev_type, devtype,
2572                                                sizeof(devtype)),
2573                           dev_name, supp_config_methods, dev_capab, group_capab,
2574                           group ? " group=" : "",
2575                           group ? group->ifname : "");
2576         if (os_snprintf_error(sizeof(params), res))
2577                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2578         params[sizeof(params) - 1] = '\0';
2579
2580         if (config_methods & WPS_CONFIG_DISPLAY) {
2581                 if (wps_generate_pin(&generated_pin) < 0) {
2582                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2583                         wpas_notify_p2p_provision_discovery(
2584                                 wpa_s, peer, 0 /* response */,
2585                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2586                         return;
2587                 }
2588                 wpas_prov_disc_local_display(wpa_s, peer, params,
2589                                              generated_pin);
2590         } else if (config_methods & WPS_CONFIG_KEYPAD)
2591                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2592         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2593                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2594                                MACSTR "%s", MAC2STR(peer), params);
2595
2596         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2597                                             P2P_PROV_DISC_SUCCESS,
2598                                             config_methods, generated_pin);
2599 }
2600
2601
2602 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2603 {
2604         struct wpa_supplicant *wpa_s = ctx;
2605         unsigned int generated_pin = 0;
2606         char params[20];
2607
2608         if (wpa_s->pending_pd_before_join &&
2609             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2610              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2611                 wpa_s->pending_pd_before_join = 0;
2612                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2613                            "join-existing-group operation");
2614                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2615                 return;
2616         }
2617
2618         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2619             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2620                 int res;
2621
2622                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2623                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2624                 if (os_snprintf_error(sizeof(params), res))
2625                         params[sizeof(params) - 1] = '\0';
2626         } else
2627                 params[0] = '\0';
2628
2629         if (config_methods & WPS_CONFIG_DISPLAY)
2630                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2631         else if (config_methods & WPS_CONFIG_KEYPAD) {
2632                 if (wps_generate_pin(&generated_pin) < 0) {
2633                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2634                         wpas_notify_p2p_provision_discovery(
2635                                 wpa_s, peer, 0 /* response */,
2636                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2637                         return;
2638                 }
2639                 wpas_prov_disc_local_display(wpa_s, peer, params,
2640                                              generated_pin);
2641         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2642                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2643                                MACSTR "%s", MAC2STR(peer), params);
2644
2645         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2646                                             P2P_PROV_DISC_SUCCESS,
2647                                             config_methods, generated_pin);
2648 }
2649
2650
2651 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2652                                 enum p2p_prov_disc_status status,
2653                                 u32 adv_id, const u8 *adv_mac,
2654                                 const char *deferred_session_resp)
2655 {
2656         struct wpa_supplicant *wpa_s = ctx;
2657
2658         if (wpa_s->p2p_fallback_to_go_neg) {
2659                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2660                         "failed - fall back to GO Negotiation");
2661                 wpa_msg_global(wpa_s->parent, MSG_INFO,
2662                                P2P_EVENT_FALLBACK_TO_GO_NEG
2663                                "reason=PD-failed");
2664                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2665                 return;
2666         }
2667
2668         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2669                 wpa_s->pending_pd_before_join = 0;
2670                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2671                            "join-existing-group operation (no ACK for PD "
2672                            "Req attempts)");
2673                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2674                 return;
2675         }
2676
2677         if (adv_id && adv_mac && deferred_session_resp) {
2678                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2679                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2680                                " deferred_session_resp='%s'",
2681                                MAC2STR(peer), status, adv_id,
2682                                deferred_session_resp);
2683         } else if (adv_id && adv_mac) {
2684                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2685                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2686                                MAC2STR(peer), status, adv_id);
2687         } else {
2688                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2689                                " p2p_dev_addr=" MACSTR " status=%d",
2690                                MAC2STR(peer), status);
2691         }
2692
2693         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2694                                             status, 0, 0);
2695 }
2696
2697
2698 static int freq_included(struct wpa_supplicant *wpa_s,
2699                          const struct p2p_channels *channels,
2700                          unsigned int freq)
2701 {
2702         if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2703             wpas_p2p_go_is_peer_freq(wpa_s, freq))
2704                 return 1;
2705         return 0;
2706 }
2707
2708
2709 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2710 {
2711         unsigned int num = P2P_MAX_CHANNELS;
2712         int *common_freqs;
2713         int ret;
2714
2715         p2p_go_dump_common_freqs(wpa_s);
2716         common_freqs = os_calloc(num, sizeof(int));
2717         if (!common_freqs)
2718                 return;
2719
2720         ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2721         if (ret < 0) {
2722                 wpa_dbg(wpa_s, MSG_DEBUG,
2723                         "P2P: Failed to get group common freqs");
2724                 os_free(common_freqs);
2725                 return;
2726         }
2727
2728         os_free(wpa_s->p2p_group_common_freqs);
2729         wpa_s->p2p_group_common_freqs = common_freqs;
2730         wpa_s->p2p_group_common_freqs_num = num;
2731         p2p_go_dump_common_freqs(wpa_s);
2732 }
2733
2734
2735 /*
2736  * Check if the given frequency is one of the possible operating frequencies
2737  * set after the completion of the GO Negotiation.
2738  */
2739 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2740 {
2741         unsigned int i;
2742
2743         p2p_go_dump_common_freqs(wpa_s);
2744
2745         /* assume no restrictions */
2746         if (!wpa_s->p2p_group_common_freqs_num)
2747                 return 1;
2748
2749         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2750                 if (wpa_s->p2p_group_common_freqs[i] == freq)
2751                         return 1;
2752         }
2753         return 0;
2754 }
2755
2756
2757 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2758                                struct sta_info *sta, void *ctx)
2759 {
2760         int *ecsa_support = ctx;
2761
2762         *ecsa_support &= sta->ecsa_supported;
2763
2764         return 0;
2765 }
2766
2767
2768 /* Check if all the peers support eCSA */
2769 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2770 {
2771         int ecsa_support = 1;
2772
2773         ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2774                         &ecsa_support);
2775
2776         return ecsa_support;
2777 }
2778
2779
2780 /**
2781  * Pick the best frequency to use from all the currently used frequencies.
2782  */
2783 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2784                                         struct wpa_used_freq_data *freqs,
2785                                         unsigned int num)
2786 {
2787         unsigned int i, c;
2788
2789         /* find a candidate freq that is supported by P2P */
2790         for (c = 0; c < num; c++)
2791                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2792                         break;
2793
2794         if (c == num)
2795                 return 0;
2796
2797         /* once we have a candidate, try to find a 'better' one */
2798         for (i = c + 1; i < num; i++) {
2799                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2800                         continue;
2801
2802                 /*
2803                  * 1. Infrastructure station interfaces have higher preference.
2804                  * 2. P2P Clients have higher preference.
2805                  * 3. All others.
2806                  */
2807                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2808                         c = i;
2809                         break;
2810                 }
2811
2812                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2813                         c = i;
2814         }
2815         return freqs[c].freq;
2816 }
2817
2818
2819 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2820                                   const u8 *go_dev_addr, const u8 *ssid,
2821                                   size_t ssid_len, int *go, u8 *group_bssid,
2822                                   int *force_freq, int persistent_group,
2823                                   const struct p2p_channels *channels,
2824                                   int dev_pw_id)
2825 {
2826         struct wpa_supplicant *wpa_s = ctx;
2827         struct wpa_ssid *s;
2828         struct wpa_used_freq_data *freqs;
2829         struct wpa_supplicant *grp;
2830         int best_freq;
2831
2832         if (!persistent_group) {
2833                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2834                            " to join an active group (SSID: %s)",
2835                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2836                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2837                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2838                      == 0 ||
2839                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2840                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2841                                    "authorized invitation");
2842                         goto accept_inv;
2843                 }
2844
2845 #ifdef CONFIG_WPS_NFC
2846                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2847                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2848                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2849                         wpa_s->p2p_wps_method = WPS_NFC;
2850                         wpa_s->pending_join_wps_method = WPS_NFC;
2851                         os_memcpy(wpa_s->pending_join_dev_addr,
2852                                   go_dev_addr, ETH_ALEN);
2853                         os_memcpy(wpa_s->pending_join_iface_addr,
2854                                   bssid, ETH_ALEN);
2855                         goto accept_inv;
2856                 }
2857 #endif /* CONFIG_WPS_NFC */
2858
2859                 /*
2860                  * Do not accept the invitation automatically; notify user and
2861                  * request approval.
2862                  */
2863                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2864         }
2865
2866         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2867         if (grp) {
2868                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2869                            "running persistent group");
2870                 if (*go)
2871                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2872                 goto accept_inv;
2873         }
2874
2875         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2876             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2877                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2878                            "invitation to re-invoke a persistent group");
2879                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2880         } else if (!wpa_s->conf->persistent_reconnect)
2881                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2882
2883         for (s = wpa_s->conf->ssid; s; s = s->next) {
2884                 if (s->disabled == 2 &&
2885                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2886                     s->ssid_len == ssid_len &&
2887                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2888                         break;
2889         }
2890
2891         if (!s) {
2892                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2893                            " requested reinvocation of an unknown group",
2894                            MAC2STR(sa));
2895                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2896         }
2897
2898         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2899                 *go = 1;
2900                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2901                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2902                                    "interface is already in use - reject "
2903                                    "invitation");
2904                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2905                 }
2906                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2907         } else if (s->mode == WPAS_MODE_P2P_GO) {
2908                 *go = 1;
2909                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2910                 {
2911                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2912                                    "interface address for the group");
2913                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2914                 }
2915                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2916                           ETH_ALEN);
2917         }
2918
2919 accept_inv:
2920         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2921
2922         best_freq = 0;
2923         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2924                           sizeof(struct wpa_used_freq_data));
2925         if (freqs) {
2926                 int num_channels = wpa_s->num_multichan_concurrent;
2927                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2928                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2929                 os_free(freqs);
2930         }
2931
2932         /* Get one of the frequencies currently in use */
2933         if (best_freq > 0) {
2934                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2935                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2936
2937                 if (wpa_s->num_multichan_concurrent < 2 ||
2938                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2939                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2940                         *force_freq = best_freq;
2941                 }
2942         }
2943
2944         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2945             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2946                 if (*go == 0) {
2947                         /* We are the client */
2948                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2949                                    "running a GO but we are capable of MCC, "
2950                                    "figure out the best channel to use");
2951                         *force_freq = 0;
2952                 } else if (!freq_included(wpa_s, channels, *force_freq)) {
2953                         /* We are the GO, and *force_freq is not in the
2954                          * intersection */
2955                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2956                                    "in intersection but we are capable of MCC, "
2957                                    "figure out the best channel to use",
2958                                    *force_freq);
2959                         *force_freq = 0;
2960                 }
2961         }
2962
2963         return P2P_SC_SUCCESS;
2964 }
2965
2966
2967 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2968                                      const u8 *ssid, size_t ssid_len,
2969                                      const u8 *go_dev_addr, u8 status,
2970                                      int op_freq)
2971 {
2972         struct wpa_supplicant *wpa_s = ctx;
2973         struct wpa_ssid *s;
2974
2975         for (s = wpa_s->conf->ssid; s; s = s->next) {
2976                 if (s->disabled == 2 &&
2977                     s->ssid_len == ssid_len &&
2978                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2979                         break;
2980         }
2981
2982         if (status == P2P_SC_SUCCESS) {
2983                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2984                            " was accepted; op_freq=%d MHz, SSID=%s",
2985                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
2986                 if (s) {
2987                         int go = s->mode == WPAS_MODE_P2P_GO;
2988                         wpas_p2p_group_add_persistent(
2989                                 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL,
2990                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
2991                                 1);
2992                 } else if (bssid) {
2993                         wpa_s->user_initiated_pd = 0;
2994                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2995                                       wpa_s->p2p_wps_method, 0, op_freq,
2996                                       ssid, ssid_len);
2997                 }
2998                 return;
2999         }
3000
3001         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3002                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3003                            " was rejected (status %u)", MAC2STR(sa), status);
3004                 return;
3005         }
3006
3007         if (!s) {
3008                 if (bssid) {
3009                         wpa_msg_global(wpa_s, MSG_INFO,
3010                                        P2P_EVENT_INVITATION_RECEIVED
3011                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3012                                        " bssid=" MACSTR " unknown-network",
3013                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3014                                        MAC2STR(bssid));
3015                 } else {
3016                         wpa_msg_global(wpa_s, MSG_INFO,
3017                                        P2P_EVENT_INVITATION_RECEIVED
3018                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3019                                        " unknown-network",
3020                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3021                 }
3022                 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3023                                                     bssid, 0, op_freq);
3024                 return;
3025         }
3026
3027         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3028                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3029                                "sa=" MACSTR " persistent=%d freq=%d",
3030                                MAC2STR(sa), s->id, op_freq);
3031         } else {
3032                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3033                                "sa=" MACSTR " persistent=%d",
3034                                MAC2STR(sa), s->id);
3035         }
3036         wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3037                                             s->id, op_freq);
3038 }
3039
3040
3041 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3042                                         struct wpa_ssid *ssid,
3043                                         const u8 *peer, int inv)
3044 {
3045         size_t i;
3046         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3047
3048         if (ssid == NULL)
3049                 return;
3050
3051         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3052                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3053                               ETH_ALEN) == 0)
3054                         break;
3055         }
3056         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3057                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3058                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3059                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3060                                    "due to invitation result", ssid->id);
3061                         wpas_notify_network_removed(wpa_s, ssid);
3062                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3063                         return;
3064                 }
3065                 return; /* Peer not found in client list */
3066         }
3067
3068         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3069                    "group %d client list%s",
3070                    MAC2STR(peer), ssid->id,
3071                    inv ? " due to invitation result" : "");
3072         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3073                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3074                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3075         ssid->num_p2p_clients--;
3076         if (p2p_wpa_s->conf->update_config &&
3077             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3078                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3079 }
3080
3081
3082 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3083                                           const u8 *peer)
3084 {
3085         struct wpa_ssid *ssid;
3086
3087         wpa_s = wpa_s->global->p2p_invite_group;
3088         if (wpa_s == NULL)
3089                 return; /* No known invitation group */
3090         ssid = wpa_s->current_ssid;
3091         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3092             !ssid->p2p_persistent_group)
3093                 return; /* Not operating as a GO in persistent group */
3094         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3095                                        ssid->ssid, ssid->ssid_len);
3096         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3097 }
3098
3099
3100 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3101                                    const struct p2p_channels *channels,
3102                                    const u8 *peer, int neg_freq,
3103                                    int peer_oper_freq)
3104 {
3105         struct wpa_supplicant *wpa_s = ctx;
3106         struct wpa_ssid *ssid;
3107         int freq;
3108
3109         if (bssid) {
3110                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3111                                "status=%d " MACSTR,
3112                                status, MAC2STR(bssid));
3113         } else {
3114                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3115                                "status=%d ", status);
3116         }
3117         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3118
3119         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3120                    status, MAC2STR(peer));
3121         if (wpa_s->pending_invite_ssid_id == -1) {
3122                 struct wpa_supplicant *group_if =
3123                         wpa_s->global->p2p_invite_group;
3124
3125                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3126                         wpas_remove_persistent_client(wpa_s, peer);
3127
3128                 /*
3129                  * Invitation to an active group. If this is successful and we
3130                  * are the GO, set the client wait to postpone some concurrent
3131                  * operations and to allow provisioning and connection to happen
3132                  * more quickly.
3133                  */
3134                 if (status == P2P_SC_SUCCESS &&
3135                     group_if && group_if->current_ssid &&
3136                     group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3137                         os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3138 #ifdef CONFIG_TESTING_OPTIONS
3139                         if (group_if->p2p_go_csa_on_inv) {
3140                                 wpa_printf(MSG_DEBUG,
3141                                            "Testing: force P2P GO CSA after invitation");
3142                                 eloop_cancel_timeout(
3143                                         wpas_p2p_reconsider_moving_go,
3144                                         wpa_s, NULL);
3145                                 eloop_register_timeout(
3146                                         0, 50000,
3147                                         wpas_p2p_reconsider_moving_go,
3148                                         wpa_s, NULL);
3149                         }
3150 #endif /* CONFIG_TESTING_OPTIONS */
3151                 }
3152                 return;
3153         }
3154
3155         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3156                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3157                            "invitation exchange to indicate readiness for "
3158                            "re-invocation");
3159         }
3160
3161         if (status != P2P_SC_SUCCESS) {
3162                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3163                         ssid = wpa_config_get_network(
3164                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3165                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3166                 }
3167                 wpas_p2p_remove_pending_group_interface(wpa_s);
3168                 return;
3169         }
3170
3171         ssid = wpa_config_get_network(wpa_s->conf,
3172                                       wpa_s->pending_invite_ssid_id);
3173         if (ssid == NULL) {
3174                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3175                            "data matching with invitation");
3176                 return;
3177         }
3178
3179         /*
3180          * The peer could have missed our ctrl::ack frame for Invitation
3181          * Response and continue retransmitting the frame. To reduce the
3182          * likelihood of the peer not getting successful TX status for the
3183          * Invitation Response frame, wait a short time here before starting
3184          * the persistent group so that we will remain on the current channel to
3185          * acknowledge any possible retransmission from the peer.
3186          */
3187         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3188                 "starting persistent group");
3189         os_sleep(0, 50000);
3190
3191         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3192             freq_included(wpa_s, channels, neg_freq))
3193                 freq = neg_freq;
3194         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3195                  freq_included(wpa_s, channels, peer_oper_freq))
3196                 freq = peer_oper_freq;
3197         else
3198                 freq = 0;
3199
3200         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3201                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3202         wpas_p2p_group_add_persistent(wpa_s, ssid,
3203                                       ssid->mode == WPAS_MODE_P2P_GO,
3204                                       wpa_s->p2p_persistent_go_freq,
3205                                       freq,
3206                                       wpa_s->p2p_go_vht_center_freq2,
3207                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3208                                       wpa_s->p2p_go_max_oper_chwidth,
3209                                       channels,
3210                                       ssid->mode == WPAS_MODE_P2P_GO ?
3211                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3212                                       0, 1);
3213 }
3214
3215
3216 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3217                                     unsigned int freq)
3218 {
3219         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3220                 return 1;
3221         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3222 }
3223
3224
3225 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3226 {
3227         reg->channel[reg->channels] = chan;
3228         reg->channels++;
3229 }
3230
3231
3232 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3233                                      struct p2p_channels *chan,
3234                                      struct p2p_channels *cli_chan)
3235 {
3236         int i, cla = 0;
3237
3238         wpa_s->global->p2p_24ghz_social_channels = 1;
3239
3240         os_memset(cli_chan, 0, sizeof(*cli_chan));
3241
3242         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3243                    "band");
3244
3245         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3246         chan->reg_class[cla].reg_class = 81;
3247         chan->reg_class[cla].channels = 0;
3248         for (i = 0; i < 11; i++) {
3249                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3250                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3251         }
3252         if (chan->reg_class[cla].channels)
3253                 cla++;
3254
3255         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3256                    "band");
3257
3258         /* Operating class 115 - 5 GHz, channels 36-48 */
3259         chan->reg_class[cla].reg_class = 115;
3260         chan->reg_class[cla].channels = 0;
3261         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3262                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3263         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3264                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3265         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3266                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3267         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3268                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3269         if (chan->reg_class[cla].channels)
3270                 cla++;
3271
3272         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3273                    "band");
3274
3275         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3276         chan->reg_class[cla].reg_class = 124;
3277         chan->reg_class[cla].channels = 0;
3278         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3279                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3280         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3281                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3282         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3283                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3284         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3285                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3286         if (chan->reg_class[cla].channels)
3287                 cla++;
3288
3289         chan->reg_classes = cla;
3290         return 0;
3291 }
3292
3293
3294 enum chan_allowed {
3295         NOT_ALLOWED, NO_IR, ALLOWED
3296 };
3297
3298 static int has_channel(struct wpa_global *global,
3299                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3300 {
3301         int i;
3302         unsigned int freq;
3303
3304         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3305                 chan * 5;
3306         if (wpas_p2p_disallowed_freq(global, freq))
3307                 return NOT_ALLOWED;
3308
3309         for (i = 0; i < mode->num_channels; i++) {
3310                 if (mode->channels[i].chan == chan) {
3311                         if (flags)
3312                                 *flags = mode->channels[i].flag;
3313                         if (mode->channels[i].flag &
3314                             (HOSTAPD_CHAN_DISABLED |
3315                              HOSTAPD_CHAN_RADAR))
3316                                 return NOT_ALLOWED;
3317                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3318                                 return NO_IR;
3319                         return ALLOWED;
3320                 }
3321         }
3322
3323         return NOT_ALLOWED;
3324 }
3325
3326
3327 struct p2p_oper_class_map {
3328         enum hostapd_hw_mode mode;
3329         u8 op_class;
3330         u8 min_chan;
3331         u8 max_chan;
3332         u8 inc;
3333         enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160, BW160, BW80P80 } bw;
3334 };
3335
3336 static const struct p2p_oper_class_map op_class[] = {
3337         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3338 #if 0 /* Do not enable HT40 on 2 GHz for now */
3339         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3340         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3341 #endif
3342         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3343         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3344         { HOSTAPD_MODE_IEEE80211A, 125, 149, 169, 4, BW20 },
3345         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3346         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3347         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3348         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3349
3350         /*
3351          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3352          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3353          * 80 MHz, but currently use the following definition for simplicity
3354          * (these center frequencies are not actual channels, which makes
3355          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3356          * removing invalid channels.
3357          */
3358         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3359         { HOSTAPD_MODE_IEEE80211A, 130, 36, 161, 4, BW80P80 },
3360         { HOSTAPD_MODE_IEEE80211A, 129, 50, 114, 16, BW160 },
3361         { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
3362         { -1, 0, 0, 0, 0, BW20 }
3363 };
3364
3365
3366 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3367                                      struct hostapd_hw_modes *mode,
3368                                      u8 channel)
3369 {
3370         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3371         unsigned int i;
3372
3373         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3374                 return 0;
3375
3376         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3377                 /*
3378                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3379                  * so the center channel is 6 channels away from the start/end.
3380                  */
3381                 if (channel >= center_channels[i] - 6 &&
3382                     channel <= center_channels[i] + 6)
3383                         return center_channels[i];
3384
3385         return 0;
3386 }
3387
3388
3389 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3390                                                struct hostapd_hw_modes *mode,
3391                                                u8 channel, u8 bw)
3392 {
3393         u8 center_chan;
3394         int i, flags;
3395         enum chan_allowed res, ret = ALLOWED;
3396
3397         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3398         if (!center_chan)
3399                 return NOT_ALLOWED;
3400         if (center_chan >= 58 && center_chan <= 138)
3401                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3402
3403         /* check all the channels are available */
3404         for (i = 0; i < 4; i++) {
3405                 int adj_chan = center_chan - 6 + i * 4;
3406
3407                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3408                 if (res == NOT_ALLOWED)
3409                         return NOT_ALLOWED;
3410                 if (res == NO_IR)
3411                         ret = NO_IR;
3412
3413                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3414                         return NOT_ALLOWED;
3415                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3416                         return NOT_ALLOWED;
3417                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3418                         return NOT_ALLOWED;
3419                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3420                         return NOT_ALLOWED;
3421         }
3422
3423         return ret;
3424 }
3425
3426
3427 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3428                                      struct hostapd_hw_modes *mode,
3429                                      u8 channel)
3430 {
3431         u8 center_channels[] = { 50, 114 };
3432         unsigned int i;
3433
3434         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3435                 return 0;
3436
3437         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3438                 /*
3439                  * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3440                  * so the center channel is 14 channels away from the start/end.
3441                  */
3442                 if (channel >= center_channels[i] - 14 &&
3443                     channel <= center_channels[i] + 14)
3444                         return center_channels[i];
3445
3446         return 0;
3447 }
3448
3449
3450 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3451                                                struct hostapd_hw_modes *mode,
3452                                                u8 channel, u8 bw)
3453 {
3454         u8 center_chan;
3455         int i, flags;
3456         enum chan_allowed res, ret = ALLOWED;
3457
3458         center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3459         if (!center_chan)
3460                 return NOT_ALLOWED;
3461         /* VHT 160 MHz uses DFS channels in most countries. */
3462
3463         /* Check all the channels are available */
3464         for (i = 0; i < 8; i++) {
3465                 int adj_chan = center_chan - 14 + i * 4;
3466
3467                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3468                 if (res == NOT_ALLOWED)
3469                         return NOT_ALLOWED;
3470
3471                 if (res == NO_IR)
3472                         ret = NO_IR;
3473
3474                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3475                         return NOT_ALLOWED;
3476                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3477                         return NOT_ALLOWED;
3478                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3479                         return NOT_ALLOWED;
3480                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3481                         return NOT_ALLOWED;
3482                 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3483                         return NOT_ALLOWED;
3484                 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3485                         return NOT_ALLOWED;
3486                 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3487                         return NOT_ALLOWED;
3488                 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3489                         return NOT_ALLOWED;
3490         }
3491
3492         return ret;
3493 }
3494
3495
3496 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3497                                                  struct hostapd_hw_modes *mode,
3498                                                  u8 channel, u8 bw)
3499 {
3500         int flag = 0;
3501         enum chan_allowed res, res2;
3502
3503         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3504         if (bw == BW40MINUS) {
3505                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3506                         return NOT_ALLOWED;
3507                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3508         } else if (bw == BW40PLUS) {
3509                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3510                         return NOT_ALLOWED;
3511                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3512         } else if (bw == BW80) {
3513                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3514         } else if (bw == BW160) {
3515                 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3516         }
3517
3518         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3519                 return NOT_ALLOWED;
3520         if (res == NO_IR || res2 == NO_IR)
3521                 return NO_IR;
3522         return res;
3523 }
3524
3525
3526 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3527                                    struct p2p_channels *chan,
3528                                    struct p2p_channels *cli_chan)
3529 {
3530         struct hostapd_hw_modes *mode;
3531         int cla, op, cli_cla;
3532
3533         if (wpa_s->hw.modes == NULL) {
3534                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3535                            "of all supported channels; assume dualband "
3536                            "support");
3537                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3538         }
3539
3540         cla = cli_cla = 0;
3541
3542         for (op = 0; op_class[op].op_class; op++) {
3543                 const struct p2p_oper_class_map *o = &op_class[op];
3544                 u8 ch;
3545                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3546
3547                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3548                 if (mode == NULL)
3549                         continue;
3550                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3551                         wpa_s->global->p2p_24ghz_social_channels = 1;
3552                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3553                         enum chan_allowed res;
3554                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3555                         if (res == ALLOWED) {
3556                                 if (reg == NULL) {
3557                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3558                                                    o->op_class);
3559                                         reg = &chan->reg_class[cla];
3560                                         cla++;
3561                                         reg->reg_class = o->op_class;
3562                                 }
3563                                 reg->channel[reg->channels] = ch;
3564                                 reg->channels++;
3565                         } else if (res == NO_IR &&
3566                                    wpa_s->conf->p2p_add_cli_chan) {
3567                                 if (cli_reg == NULL) {
3568                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3569                                                    o->op_class);
3570                                         cli_reg = &cli_chan->reg_class[cli_cla];
3571                                         cli_cla++;
3572                                         cli_reg->reg_class = o->op_class;
3573                                 }
3574                                 cli_reg->channel[cli_reg->channels] = ch;
3575                                 cli_reg->channels++;
3576                         }
3577                 }
3578                 if (reg) {
3579                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3580                                     reg->channel, reg->channels);
3581                 }
3582                 if (cli_reg) {
3583                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3584                                     cli_reg->channel, cli_reg->channels);
3585                 }
3586         }
3587
3588         chan->reg_classes = cla;
3589         cli_chan->reg_classes = cli_cla;
3590
3591         return 0;
3592 }
3593
3594
3595 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3596                            struct hostapd_hw_modes *mode, u8 channel)
3597 {
3598         int op;
3599         enum chan_allowed ret;
3600
3601         for (op = 0; op_class[op].op_class; op++) {
3602                 const struct p2p_oper_class_map *o = &op_class[op];
3603                 u8 ch;
3604
3605                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3606                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3607                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3608                             ch != channel)
3609                                 continue;
3610                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3611                         if (ret == ALLOWED)
3612                                 return (o->bw == BW40MINUS) ? -1 : 1;
3613                 }
3614         }
3615         return 0;
3616 }
3617
3618
3619 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3620                               struct hostapd_hw_modes *mode, u8 channel)
3621 {
3622         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3623                 return 0;
3624
3625         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3626 }
3627
3628
3629 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3630                                struct hostapd_hw_modes *mode, u8 channel)
3631 {
3632         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3633                 return 0;
3634         return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3635 }
3636
3637
3638 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3639                         size_t buf_len)
3640 {
3641         struct wpa_supplicant *wpa_s = ctx;
3642
3643         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3644                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3645                         break;
3646         }
3647         if (wpa_s == NULL)
3648                 return -1;
3649
3650         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3651 }
3652
3653
3654 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3655                                               const u8 *ssid, size_t ssid_len)
3656 {
3657         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3658                 struct wpa_ssid *s = wpa_s->current_ssid;
3659                 if (s == NULL)
3660                         continue;
3661                 if (s->mode != WPAS_MODE_P2P_GO &&
3662                     s->mode != WPAS_MODE_AP &&
3663                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3664                         continue;
3665                 if (s->ssid_len != ssid_len ||
3666                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3667                         continue;
3668                 return wpa_s;
3669         }
3670
3671         return NULL;
3672
3673 }
3674
3675
3676 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3677                                                   const u8 *peer_dev_addr)
3678 {
3679         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3680                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3681                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3682                         continue;
3683                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3684                         return wpa_s;
3685         }
3686
3687         return NULL;
3688 }
3689
3690
3691 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3692 {
3693         struct wpa_supplicant *wpa_s = ctx;
3694
3695         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3696 }
3697
3698
3699 static int wpas_is_concurrent_session_active(void *ctx)
3700 {
3701         struct wpa_supplicant *wpa_s = ctx;
3702         struct wpa_supplicant *ifs;
3703
3704         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3705                 if (ifs == wpa_s)
3706                         continue;
3707                 if (ifs->wpa_state > WPA_ASSOCIATED)
3708                         return 1;
3709         }
3710         return 0;
3711 }
3712
3713
3714 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3715 {
3716         struct wpa_supplicant *wpa_s = ctx;
3717         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3718 }
3719
3720
3721 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3722                                   const char *conf_p2p_dev)
3723 {
3724         struct wpa_interface iface;
3725         struct wpa_supplicant *p2pdev_wpa_s;
3726         char ifname[100];
3727         char force_name[100];
3728         int ret;
3729
3730         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3731                           wpa_s->ifname);
3732         if (os_snprintf_error(sizeof(ifname), ret))
3733                 return -1;
3734         force_name[0] = '\0';
3735         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3736         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3737                              force_name, wpa_s->pending_interface_addr, NULL);
3738         if (ret < 0) {
3739                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3740                 return ret;
3741         }
3742         os_strlcpy(wpa_s->pending_interface_name, ifname,
3743                    sizeof(wpa_s->pending_interface_name));
3744
3745         os_memset(&iface, 0, sizeof(iface));
3746         iface.p2p_mgmt = 1;
3747         iface.ifname = wpa_s->pending_interface_name;
3748         iface.driver = wpa_s->driver->name;
3749         iface.driver_param = wpa_s->conf->driver_param;
3750
3751         /*
3752          * If a P2P Device configuration file was given, use it as the interface
3753          * configuration file (instead of using parent's configuration file.
3754          */
3755         if (conf_p2p_dev) {
3756                 iface.confname = conf_p2p_dev;
3757                 iface.ctrl_interface = NULL;
3758         } else {
3759                 iface.confname = wpa_s->confname;
3760                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3761         }
3762
3763         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3764         if (!p2pdev_wpa_s) {
3765                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3766                 return -1;
3767         }
3768
3769         wpa_s->pending_interface_name[0] = '\0';
3770         return 0;
3771 }
3772
3773
3774 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3775                                const u8 *noa, size_t noa_len)
3776 {
3777         struct wpa_supplicant *wpa_s, *intf = ctx;
3778         char hex[100];
3779
3780         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3781                 if (wpa_s->waiting_presence_resp)
3782                         break;
3783         }
3784         if (!wpa_s) {
3785                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3786                 return;
3787         }
3788         wpa_s->waiting_presence_resp = 0;
3789
3790         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3791         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3792                 " status=%u noa=%s", MAC2STR(src), status, hex);
3793 }
3794
3795
3796 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3797                                      size_t ssid_len, u8 *go_dev_addr,
3798                                      u8 *ret_ssid, size_t *ret_ssid_len,
3799                                      u8 *intended_iface_addr)
3800 {
3801         struct wpa_supplicant *wpa_s = ctx;
3802         struct wpa_ssid *s;
3803
3804         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3805         if (s) {
3806                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3807                 *ret_ssid_len = s->ssid_len;
3808                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3809
3810                 if (s->mode != WPAS_MODE_P2P_GO) {
3811                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3812                 } else if (wpas_p2p_create_iface(wpa_s)) {
3813                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3814                                 return 0;
3815
3816                         os_memcpy(intended_iface_addr,
3817                                   wpa_s->pending_interface_addr, ETH_ALEN);
3818                 } else {
3819                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3820                                   ETH_ALEN);
3821                 }
3822                 return 1;
3823         }
3824
3825         return 0;
3826 }
3827
3828
3829 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3830                             u8 *ssid, size_t *ssid_len, int *group_iface,
3831                             unsigned int *freq)
3832 {
3833         struct wpa_supplicant *wpa_s = ctx;
3834         struct wpa_supplicant *go;
3835         struct wpa_ssid *s;
3836
3837         /*
3838          * group_iface will be set to 1 only if a dedicated interface for P2P
3839          * role is required. First, we try to reuse an active GO. However,
3840          * if it is not present, we will try to reactivate an existing
3841          * persistent group and set group_iface to 1, so the caller will know
3842          * that the pending interface should be used.
3843          */
3844         *group_iface = 0;
3845
3846         if (freq)
3847                 *freq = 0;
3848
3849         go = wpas_p2p_get_go_group(wpa_s);
3850         if (!go) {
3851                 s = wpas_p2p_get_persistent_go(wpa_s);
3852                 *group_iface = wpas_p2p_create_iface(wpa_s);
3853                 if (s)
3854                         os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3855                 else
3856                         return 0;
3857         } else {
3858                 s = go->current_ssid;
3859                 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3860                 if (freq)
3861                         *freq = go->assoc_freq;
3862         }
3863
3864         os_memcpy(ssid, s->ssid, s->ssid_len);
3865         *ssid_len = s->ssid_len;
3866
3867         return 1;
3868 }
3869
3870
3871 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3872                                     const u8 *ssid, size_t ssid_len)
3873 {
3874         struct wpa_supplicant *wpa_s = ctx;
3875         struct wpa_ssid *s;
3876         int save_config = 0;
3877         size_t i;
3878
3879         /* Start with our first choice of Persistent Groups */
3880         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3881                 if (go && ssid && ssid_len &&
3882                     s->ssid_len == ssid_len &&
3883                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3884                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3885                         break;
3886
3887                 /* Remove stale persistent group */
3888                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3889                         wpa_config_remove_network(wpa_s->conf, s->id);
3890                         save_config = 1;
3891                         continue;
3892                 }
3893
3894                 for (i = 0; i < s->num_p2p_clients; i++) {
3895                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3896                                       peer, ETH_ALEN) != 0)
3897                                 continue;
3898
3899                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3900                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3901                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3902                         break;
3903                 }
3904                 s->num_p2p_clients--;
3905                 save_config = 1;
3906         }
3907
3908         if (save_config)
3909                 p2p_config_write(wpa_s);
3910
3911         /* Return TRUE if valid SSID remains */
3912         return s != NULL;
3913 }
3914
3915
3916 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3917                                        const u8 *feat_cap, size_t feat_cap_len)
3918 {
3919         static const char pref[] = " feature_cap=";
3920         int ret;
3921
3922         buf[0] = '\0';
3923
3924         /*
3925          * We expect a feature capability to contain at least one byte to be
3926          * reported. The string buffer provided by the caller function is
3927          * expected to be big enough to contain all bytes of the attribute for
3928          * known specifications. This function truncates the reported bytes if
3929          * the feature capability data exceeds the string buffer size.
3930          */
3931         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3932                 return;
3933
3934         os_memcpy(buf, pref, sizeof(pref));
3935         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3936                                buf_len - sizeof(pref) + 1,
3937                                feat_cap, feat_cap_len);
3938
3939         if (ret != (2 * (int) feat_cap_len))
3940                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3941 }
3942
3943
3944 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3945                                     const u8 *adv_mac, const u8 *ses_mac,
3946                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3947                                     u8 conncap, int passwd_id,
3948                                     const u8 *persist_ssid,
3949                                     size_t persist_ssid_size, int response_done,
3950                                     int prov_start, const char *session_info,
3951                                     const u8 *feat_cap, size_t feat_cap_len,
3952                                     unsigned int freq,
3953                                     const u8 *group_ssid, size_t group_ssid_len)
3954 {
3955         struct wpa_supplicant *wpa_s = ctx;
3956         u8 mac[ETH_ALEN];
3957         struct wpa_ssid *persistent_go, *stale, *s = NULL;
3958         int save_config = 0;
3959         struct wpa_supplicant *go_wpa_s;
3960         char feat_cap_str[256];
3961
3962         if (!dev)
3963                 return;
3964
3965         os_memset(mac, 0, ETH_ALEN);
3966         if (!adv_mac)
3967                 adv_mac = mac;
3968         if (!ses_mac)
3969                 ses_mac = mac;
3970         if (!grp_mac)
3971                 grp_mac = mac;
3972
3973         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3974                                    feat_cap, feat_cap_len);
3975
3976         if (prov_start) {
3977                 if (session_info == NULL) {
3978                         wpa_msg_global(wpa_s, MSG_INFO,
3979                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3980                                        " adv_id=%x conncap=%x"
3981                                        " adv_mac=" MACSTR
3982                                        " session=%x mac=" MACSTR
3983                                        " dev_passwd_id=%d%s",
3984                                        MAC2STR(dev), adv_id, conncap,
3985                                        MAC2STR(adv_mac),
3986                                        ses_id, MAC2STR(ses_mac),
3987                                        passwd_id, feat_cap_str);
3988                 } else {
3989                         wpa_msg_global(wpa_s, MSG_INFO,
3990                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3991                                        " adv_id=%x conncap=%x"
3992                                        " adv_mac=" MACSTR
3993                                        " session=%x mac=" MACSTR
3994                                        " dev_passwd_id=%d info='%s'%s",
3995                                        MAC2STR(dev), adv_id, conncap,
3996                                        MAC2STR(adv_mac),
3997                                        ses_id, MAC2STR(ses_mac),
3998                                        passwd_id, session_info, feat_cap_str);
3999                 }
4000                 return;
4001         }
4002
4003         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
4004         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4005
4006         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4007                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4008                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4009
4010                 if (persistent_go && !persistent_go->num_p2p_clients) {
4011                         /* remove empty persistent GO */
4012                         wpa_config_remove_network(wpa_s->conf,
4013                                                   persistent_go->id);
4014                 }
4015
4016                 wpa_msg_global(wpa_s, MSG_INFO,
4017                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4018                                " status=%d"
4019                                " adv_id=%x adv_mac=" MACSTR
4020                                " session=%x mac=" MACSTR "%s",
4021                                MAC2STR(dev), status,
4022                                adv_id, MAC2STR(adv_mac),
4023                                ses_id, MAC2STR(ses_mac), feat_cap_str);
4024                 return;
4025         }
4026
4027         /* Clean up stale persistent groups with this device */
4028         if (persist_ssid && persist_ssid_size)
4029                 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4030                                             persist_ssid_size);
4031
4032         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4033             is_zero_ether_addr(grp_mac)) {
4034                 wpa_dbg(wpa_s, MSG_ERROR,
4035                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4036                 return;
4037         }
4038
4039         for (;;) {
4040                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4041                 if (!stale)
4042                         break;
4043
4044                 if (s && s->ssid_len == stale->ssid_len &&
4045                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4046                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4047                         break;
4048
4049                 /* Remove stale persistent group */
4050                 if (stale->mode != WPAS_MODE_P2P_GO ||
4051                     stale->num_p2p_clients <= 1) {
4052                         wpa_config_remove_network(wpa_s->conf, stale->id);
4053                 } else {
4054                         size_t i;
4055
4056                         for (i = 0; i < stale->num_p2p_clients; i++) {
4057                                 if (os_memcmp(stale->p2p_client_list +
4058                                               i * ETH_ALEN,
4059                                               dev, ETH_ALEN) == 0) {
4060                                         os_memmove(stale->p2p_client_list +
4061                                                    i * ETH_ALEN,
4062                                                    stale->p2p_client_list +
4063                                                    (i + 1) * ETH_ALEN,
4064                                                    (stale->num_p2p_clients -
4065                                                     i - 1) * ETH_ALEN);
4066                                         break;
4067                                 }
4068                         }
4069                         stale->num_p2p_clients--;
4070                 }
4071                 save_config = 1;
4072         }
4073
4074         if (save_config)
4075                 p2p_config_write(wpa_s);
4076
4077         if (s) {
4078                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4079                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4080
4081                 if (persistent_go && s != persistent_go &&
4082                     !persistent_go->num_p2p_clients) {
4083                         /* remove empty persistent GO */
4084                         wpa_config_remove_network(wpa_s->conf,
4085                                                   persistent_go->id);
4086                         /* Save config */
4087                 }
4088
4089                 wpa_msg_global(wpa_s, MSG_INFO,
4090                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4091                                " status=%d"
4092                                " adv_id=%x adv_mac=" MACSTR
4093                                " session=%x mac=" MACSTR
4094                                " persist=%d%s",
4095                                MAC2STR(dev), status,
4096                                adv_id, MAC2STR(adv_mac),
4097                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4098                 return;
4099         }
4100
4101         if (conncap == P2PS_SETUP_GROUP_OWNER) {
4102                 /*
4103                  * We need to copy the interface name. Simply saving a
4104                  * pointer isn't enough, since if we use pending_interface_name
4105                  * it will be overwritten when the group is added.
4106                  */
4107                 char go_ifname[100];
4108
4109                 go_ifname[0] = '\0';
4110                 if (!go_wpa_s) {
4111                         wpa_s->global->pending_p2ps_group = 1;
4112                         wpa_s->global->pending_p2ps_group_freq = freq;
4113
4114                         if (!wpas_p2p_create_iface(wpa_s))
4115                                 os_memcpy(go_ifname, wpa_s->ifname,
4116                                           sizeof(go_ifname));
4117                         else if (wpa_s->pending_interface_name[0])
4118                                 os_memcpy(go_ifname,
4119                                           wpa_s->pending_interface_name,
4120                                           sizeof(go_ifname));
4121
4122                         if (!go_ifname[0]) {
4123                                 wpas_p2ps_prov_complete(
4124                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4125                                         dev, adv_mac, ses_mac,
4126                                         grp_mac, adv_id, ses_id, 0, 0,
4127                                         NULL, 0, 0, 0, NULL, NULL, 0, 0,
4128                                         NULL, 0);
4129                                 return;
4130                         }
4131
4132                         /* If PD Resp complete, start up the GO */
4133                         if (response_done && persistent_go) {
4134                                 wpas_p2p_group_add_persistent(
4135                                         wpa_s, persistent_go,
4136                                         0, 0, freq, 0, 0, 0, 0, NULL,
4137                                         persistent_go->mode ==
4138                                         WPAS_MODE_P2P_GO ?
4139                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4140                                         0, 0);
4141                         } else if (response_done) {
4142                                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4143                         }
4144
4145                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4146                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4147                                           ETH_ALEN);
4148                                 wpa_s->p2ps_method_config_any = 1;
4149                         }
4150                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4151                         os_memcpy(go_ifname, go_wpa_s->ifname,
4152                                   sizeof(go_ifname));
4153
4154                         if (is_zero_ether_addr(grp_mac)) {
4155                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4156                                         "P2P: Setting PIN-1 for ANY");
4157                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4158                                                           "12345670", NULL, 0,
4159                                                           0);
4160                         } else {
4161                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4162                                         "P2P: Setting PIN-1 for " MACSTR,
4163                                         MAC2STR(grp_mac));
4164                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4165                                                           "12345670", NULL, 0,
4166                                                           0);
4167                         }
4168
4169                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4170                         wpa_s->p2ps_method_config_any = 1;
4171                 }
4172
4173                 wpa_msg_global(wpa_s, MSG_INFO,
4174                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4175                                " status=%d conncap=%x"
4176                                " adv_id=%x adv_mac=" MACSTR
4177                                " session=%x mac=" MACSTR
4178                                " dev_passwd_id=%d go=%s%s",
4179                                MAC2STR(dev), status, conncap,
4180                                adv_id, MAC2STR(adv_mac),
4181                                ses_id, MAC2STR(ses_mac),
4182                                passwd_id, go_ifname, feat_cap_str);
4183                 return;
4184         }
4185
4186         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4187                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4188
4189         if (persistent_go && !persistent_go->num_p2p_clients) {
4190                 /* remove empty persistent GO */
4191                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4192         }
4193
4194         if (conncap == P2PS_SETUP_CLIENT) {
4195                 char ssid_hex[32 * 2 + 1];
4196
4197                 if (group_ssid)
4198                         wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex),
4199                                          group_ssid, group_ssid_len);
4200                 else
4201                         ssid_hex[0] = '\0';
4202                 wpa_msg_global(wpa_s, MSG_INFO,
4203                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4204                                " status=%d conncap=%x"
4205                                " adv_id=%x adv_mac=" MACSTR
4206                                " session=%x mac=" MACSTR
4207                                " dev_passwd_id=%d join=" MACSTR "%s%s%s",
4208                                MAC2STR(dev), status, conncap,
4209                                adv_id, MAC2STR(adv_mac),
4210                                ses_id, MAC2STR(ses_mac),
4211                                passwd_id, MAC2STR(grp_mac), feat_cap_str,
4212                                group_ssid ? " group_ssid=" : "", ssid_hex);
4213         } else {
4214                 wpa_msg_global(wpa_s, MSG_INFO,
4215                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4216                                " status=%d conncap=%x"
4217                                " adv_id=%x adv_mac=" MACSTR
4218                                " session=%x mac=" MACSTR
4219                                " dev_passwd_id=%d%s",
4220                                MAC2STR(dev), status, conncap,
4221                                adv_id, MAC2STR(adv_mac),
4222                                ses_id, MAC2STR(ses_mac),
4223                                passwd_id, feat_cap_str);
4224         }
4225 }
4226
4227
4228 static int _wpas_p2p_in_progress(void *ctx)
4229 {
4230         struct wpa_supplicant *wpa_s = ctx;
4231         return wpas_p2p_in_progress(wpa_s);
4232 }
4233
4234
4235 static int wpas_prov_disc_resp_cb(void *ctx)
4236 {
4237         struct wpa_supplicant *wpa_s = ctx;
4238         struct wpa_ssid *persistent_go;
4239         unsigned int freq;
4240
4241         if (!wpa_s->global->pending_p2ps_group)
4242                 return 0;
4243
4244         freq = wpa_s->global->pending_p2ps_group_freq;
4245         wpa_s->global->pending_p2ps_group_freq = 0;
4246         wpa_s->global->pending_p2ps_group = 0;
4247
4248         if (wpas_p2p_get_go_group(wpa_s))
4249                 return 0;
4250         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4251
4252         if (persistent_go) {
4253                 wpas_p2p_group_add_persistent(
4254                         wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL,
4255                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4256                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4257         } else {
4258                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4259         }
4260
4261         return 1;
4262 }
4263
4264
4265 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4266                                        unsigned int *len,
4267                                        unsigned int *freq_list)
4268 {
4269         struct wpa_supplicant *wpa_s = ctx;
4270
4271         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4272                                           WPA_IF_P2P_CLIENT, len, freq_list);
4273 }
4274
4275
4276 /**
4277  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4278  * @global: Pointer to global data from wpa_supplicant_init()
4279  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4280  * Returns: 0 on success, -1 on failure
4281  */
4282 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4283 {
4284         struct p2p_config p2p;
4285         int i;
4286
4287         if (wpa_s->conf->p2p_disabled)
4288                 return 0;
4289
4290         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4291                 return 0;
4292
4293         if (global->p2p)
4294                 return 0;
4295
4296         os_memset(&p2p, 0, sizeof(p2p));
4297         p2p.cb_ctx = wpa_s;
4298         p2p.debug_print = wpas_p2p_debug_print;
4299         p2p.p2p_scan = wpas_p2p_scan;
4300         p2p.send_action = wpas_send_action;
4301         p2p.send_action_done = wpas_send_action_done;
4302         p2p.go_neg_completed = wpas_go_neg_completed;
4303         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4304         p2p.dev_found = wpas_dev_found;
4305         p2p.dev_lost = wpas_dev_lost;
4306         p2p.find_stopped = wpas_find_stopped;
4307         p2p.start_listen = wpas_start_listen;
4308         p2p.stop_listen = wpas_stop_listen;
4309         p2p.send_probe_resp = wpas_send_probe_resp;
4310         p2p.sd_request = wpas_sd_request;
4311         p2p.sd_response = wpas_sd_response;
4312         p2p.prov_disc_req = wpas_prov_disc_req;
4313         p2p.prov_disc_resp = wpas_prov_disc_resp;
4314         p2p.prov_disc_fail = wpas_prov_disc_fail;
4315         p2p.invitation_process = wpas_invitation_process;
4316         p2p.invitation_received = wpas_invitation_received;
4317         p2p.invitation_result = wpas_invitation_result;
4318         p2p.get_noa = wpas_get_noa;
4319         p2p.go_connected = wpas_go_connected;
4320         p2p.presence_resp = wpas_presence_resp;
4321         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4322         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4323         p2p.get_persistent_group = wpas_get_persistent_group;
4324         p2p.get_go_info = wpas_get_go_info;
4325         p2p.remove_stale_groups = wpas_remove_stale_groups;
4326         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4327         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4328         p2p.p2ps_group_capability = p2ps_group_capability;
4329         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4330
4331         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4332         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4333         p2p.dev_name = wpa_s->conf->device_name;
4334         p2p.manufacturer = wpa_s->conf->manufacturer;
4335         p2p.model_name = wpa_s->conf->model_name;
4336         p2p.model_number = wpa_s->conf->model_number;
4337         p2p.serial_number = wpa_s->conf->serial_number;
4338         if (wpa_s->wps) {
4339                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4340                 p2p.config_methods = wpa_s->wps->config_methods;
4341         }
4342
4343         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4344                 wpa_printf(MSG_ERROR,
4345                            "P2P: Failed to configure supported channel list");
4346                 return -1;
4347         }
4348
4349         if (wpa_s->conf->p2p_listen_reg_class &&
4350             wpa_s->conf->p2p_listen_channel) {
4351                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4352                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4353                 p2p.channel_forced = 1;
4354         } else {
4355                 /*
4356                  * Pick one of the social channels randomly as the listen
4357                  * channel.
4358                  */
4359                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4360                                                  &p2p.channel) != 0) {
4361                         wpa_printf(MSG_INFO,
4362                                    "P2P: No social channels supported by the driver - do not enable P2P");
4363                         return 0;
4364                 }
4365                 p2p.channel_forced = 0;
4366         }
4367         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4368                    p2p.reg_class, p2p.channel);
4369
4370         if (wpa_s->conf->p2p_oper_reg_class &&
4371             wpa_s->conf->p2p_oper_channel) {
4372                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4373                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4374                 p2p.cfg_op_channel = 1;
4375                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4376                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4377
4378         } else {
4379                 /*
4380                  * Use random operation channel from 2.4 GHz band social
4381                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4382                  * other preference is indicated.
4383                  */
4384                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4385                                                  &p2p.op_channel) != 0) {
4386                         wpa_printf(MSG_ERROR,
4387                                    "P2P: Failed to select random social channel as operation channel");
4388                         return -1;
4389                 }
4390                 p2p.cfg_op_channel = 0;
4391                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4392                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4393         }
4394
4395         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4396                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4397                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4398         }
4399
4400         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4401                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4402                 p2p.country[2] = 0x04;
4403         } else
4404                 os_memcpy(p2p.country, "XX\x04", 3);
4405
4406         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4407                   WPS_DEV_TYPE_LEN);
4408
4409         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4410         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4411                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4412
4413         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4414                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4415
4416         p2p.max_peers = 100;
4417
4418         if (wpa_s->conf->p2p_ssid_postfix) {
4419                 p2p.ssid_postfix_len =
4420                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4421                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4422                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4423                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4424                           p2p.ssid_postfix_len);
4425         }
4426
4427         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4428
4429         p2p.max_listen = wpa_s->max_remain_on_chan;
4430
4431         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4432             wpa_s->conf->p2p_passphrase_len <= 63)
4433                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4434         else
4435                 p2p.passphrase_len = 8;
4436
4437         global->p2p = p2p_init(&p2p);
4438         if (global->p2p == NULL)
4439                 return -1;
4440         global->p2p_init_wpa_s = wpa_s;
4441
4442         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4443                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4444                         continue;
4445                 p2p_add_wps_vendor_extension(
4446                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4447         }
4448
4449         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4450
4451         return 0;
4452 }
4453
4454
4455 /**
4456  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4457  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4458  *
4459  * This function deinitialize per-interface P2P data.
4460  */
4461 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4462 {
4463         if (wpa_s->driver && wpa_s->drv_priv)
4464                 wpa_drv_probe_req_report(wpa_s, 0);
4465
4466         if (wpa_s->go_params) {
4467                 /* Clear any stored provisioning info */
4468                 p2p_clear_provisioning_info(
4469                         wpa_s->global->p2p,
4470                         wpa_s->go_params->peer_device_addr);
4471         }
4472
4473         os_free(wpa_s->go_params);
4474         wpa_s->go_params = NULL;
4475         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4476         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4477         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4478         wpa_s->p2p_long_listen = 0;
4479         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4480         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4481         wpas_p2p_remove_pending_group_interface(wpa_s);
4482         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4483         wpas_p2p_listen_work_done(wpa_s);
4484         if (wpa_s->p2p_send_action_work) {
4485                 os_free(wpa_s->p2p_send_action_work->ctx);
4486                 radio_work_done(wpa_s->p2p_send_action_work);
4487                 wpa_s->p2p_send_action_work = NULL;
4488         }
4489         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4490
4491         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4492         wpa_s->p2p_oob_dev_pw = NULL;
4493
4494         os_free(wpa_s->p2p_group_common_freqs);
4495         wpa_s->p2p_group_common_freqs = NULL;
4496         wpa_s->p2p_group_common_freqs_num = 0;
4497
4498         /* TODO: remove group interface from the driver if this wpa_s instance
4499          * is on top of a P2P group interface */
4500 }
4501
4502
4503 /**
4504  * wpas_p2p_deinit_global - Deinitialize global P2P module
4505  * @global: Pointer to global data from wpa_supplicant_init()
4506  *
4507  * This function deinitializes the global (per device) P2P module.
4508  */
4509 static void wpas_p2p_deinit_global(struct wpa_global *global)
4510 {
4511         struct wpa_supplicant *wpa_s, *tmp;
4512
4513         wpa_s = global->ifaces;
4514
4515         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4516
4517         /* Remove remaining P2P group interfaces */
4518         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4519                 wpa_s = wpa_s->next;
4520         while (wpa_s) {
4521                 tmp = global->ifaces;
4522                 while (tmp &&
4523                        (tmp == wpa_s ||
4524                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4525                         tmp = tmp->next;
4526                 }
4527                 if (tmp == NULL)
4528                         break;
4529                 /* Disconnect from the P2P group and deinit the interface */
4530                 wpas_p2p_disconnect(tmp);
4531         }
4532
4533         /*
4534          * Deinit GO data on any possibly remaining interface (if main
4535          * interface is used as GO).
4536          */
4537         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4538                 if (wpa_s->ap_iface)
4539                         wpas_p2p_group_deinit(wpa_s);
4540         }
4541
4542         p2p_deinit(global->p2p);
4543         global->p2p = NULL;
4544         global->p2p_init_wpa_s = NULL;
4545 }
4546
4547
4548 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4549 {
4550         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4551             wpa_s->conf->p2p_no_group_iface)
4552                 return 0; /* separate interface disabled per configuration */
4553         if (wpa_s->drv_flags &
4554             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4555              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4556                 return 1; /* P2P group requires a new interface in every case
4557                            */
4558         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4559                 return 0; /* driver does not support concurrent operations */
4560         if (wpa_s->global->ifaces->next)
4561                 return 1; /* more that one interface already in use */
4562         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4563                 return 1; /* this interface is already in use */
4564         return 0;
4565 }
4566
4567
4568 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4569                                  const u8 *peer_addr,
4570                                  enum p2p_wps_method wps_method,
4571                                  int go_intent, const u8 *own_interface_addr,
4572                                  unsigned int force_freq, int persistent_group,
4573                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4574 {
4575         if (persistent_group && wpa_s->conf->persistent_reconnect)
4576                 persistent_group = 2;
4577
4578         /*
4579          * Increase GO config timeout if HT40 is used since it takes some time
4580          * to scan channels for coex purposes before the BSS can be started.
4581          */
4582         p2p_set_config_timeout(wpa_s->global->p2p,
4583                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4584
4585         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4586                            go_intent, own_interface_addr, force_freq,
4587                            persistent_group, ssid ? ssid->ssid : NULL,
4588                            ssid ? ssid->ssid_len : 0,
4589                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4590                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4591                            0);
4592 }
4593
4594
4595 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4596                                 const u8 *peer_addr,
4597                                 enum p2p_wps_method wps_method,
4598                                 int go_intent, const u8 *own_interface_addr,
4599                                 unsigned int force_freq, int persistent_group,
4600                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4601 {
4602         if (persistent_group && wpa_s->conf->persistent_reconnect)
4603                 persistent_group = 2;
4604
4605         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4606                              go_intent, own_interface_addr, force_freq,
4607                              persistent_group, ssid ? ssid->ssid : NULL,
4608                              ssid ? ssid->ssid_len : 0, pref_freq,
4609                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4610                              0);
4611 }
4612
4613
4614 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4615 {
4616         wpa_s->p2p_join_scan_count++;
4617         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4618                    wpa_s->p2p_join_scan_count);
4619         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4620                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4621                            " for join operationg - stop join attempt",
4622                            MAC2STR(wpa_s->pending_join_iface_addr));
4623                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4624                 if (wpa_s->p2p_auto_pd) {
4625                         wpa_s->p2p_auto_pd = 0;
4626                         wpa_msg_global(wpa_s, MSG_INFO,
4627                                        P2P_EVENT_PROV_DISC_FAILURE
4628                                        " p2p_dev_addr=" MACSTR " status=N/A",
4629                                        MAC2STR(wpa_s->pending_join_dev_addr));
4630                         return;
4631                 }
4632                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4633                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4634                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4635         }
4636 }
4637
4638
4639 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4640 {
4641         int res;
4642         unsigned int num, i;
4643         struct wpa_used_freq_data *freqs;
4644
4645         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4646                 /* Multiple channels are supported and not all are in use */
4647                 return 0;
4648         }
4649
4650         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4651                           sizeof(struct wpa_used_freq_data));
4652         if (!freqs)
4653                 return 1;
4654
4655         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4656                                         wpa_s->num_multichan_concurrent);
4657
4658         for (i = 0; i < num; i++) {
4659                 if (freqs[i].freq == freq) {
4660                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4661                                    freq);
4662                         res = 0;
4663                         goto exit_free;
4664                 }
4665         }
4666
4667         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4668         res = 1;
4669
4670 exit_free:
4671         os_free(freqs);
4672         return res;
4673 }
4674
4675
4676 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4677                             const u8 *peer_dev_addr)
4678 {
4679         struct wpa_bss *bss;
4680         int updated;
4681
4682         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4683         if (bss == NULL)
4684                 return -1;
4685         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4686                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4687                            "last scan");
4688                 return 0;
4689         }
4690
4691         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4692                                     &bss->last_update);
4693         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4694                    "%ld.%06ld (%supdated in last scan)",
4695                    bss->last_update.sec, bss->last_update.usec,
4696                    updated ? "": "not ");
4697
4698         return updated;
4699 }
4700
4701
4702 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4703                                    struct wpa_scan_results *scan_res)
4704 {
4705         struct wpa_bss *bss = NULL;
4706         int freq;
4707         u8 iface_addr[ETH_ALEN];
4708
4709         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4710
4711         if (wpa_s->global->p2p_disabled)
4712                 return;
4713
4714         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4715                    scan_res ? (int) scan_res->num : -1,
4716                    wpa_s->p2p_auto_join ? "auto_" : "");
4717
4718         if (scan_res)
4719                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4720
4721         if (wpa_s->p2p_auto_pd) {
4722                 int join = wpas_p2p_peer_go(wpa_s,
4723                                             wpa_s->pending_join_dev_addr);
4724                 if (join == 0 &&
4725                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4726                         wpa_s->auto_pd_scan_retry++;
4727                         bss = wpa_bss_get_bssid_latest(
4728                                 wpa_s, wpa_s->pending_join_dev_addr);
4729                         if (bss) {
4730                                 freq = bss->freq;
4731                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4732                                            "the peer " MACSTR " at %d MHz",
4733                                            wpa_s->auto_pd_scan_retry,
4734                                            MAC2STR(wpa_s->
4735                                                    pending_join_dev_addr),
4736                                            freq);
4737                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4738                                 return;
4739                         }
4740                 }
4741
4742                 if (join < 0)
4743                         join = 0;
4744
4745                 wpa_s->p2p_auto_pd = 0;
4746                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4747                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4748                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4749                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4750                                       wpa_s->pending_join_dev_addr, NULL,
4751                                       wpa_s->pending_pd_config_methods, join,
4752                                       0, wpa_s->user_initiated_pd) < 0) {
4753                         wpa_s->p2p_auto_pd = 0;
4754                         wpa_msg_global(wpa_s, MSG_INFO,
4755                                        P2P_EVENT_PROV_DISC_FAILURE
4756                                        " p2p_dev_addr=" MACSTR " status=N/A",
4757                                        MAC2STR(wpa_s->pending_join_dev_addr));
4758                 }
4759                 return;
4760         }
4761
4762         if (wpa_s->p2p_auto_join) {
4763                 int join = wpas_p2p_peer_go(wpa_s,
4764                                             wpa_s->pending_join_dev_addr);
4765                 if (join < 0) {
4766                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4767                                    "running a GO -> use GO Negotiation");
4768                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4769                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4770                                        "reason=peer-not-running-GO");
4771                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4772                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4773                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4774                                          wpa_s->p2p_go_intent,
4775                                          wpa_s->p2p_connect_freq,
4776                                          wpa_s->p2p_go_vht_center_freq2,
4777                                          wpa_s->p2p_persistent_id,
4778                                          wpa_s->p2p_pd_before_go_neg,
4779                                          wpa_s->p2p_go_ht40,
4780                                          wpa_s->p2p_go_vht,
4781                                          wpa_s->p2p_go_max_oper_chwidth,
4782                                          NULL, 0);
4783                         return;
4784                 }
4785
4786                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4787                            "try to join the group", join ? "" :
4788                            " in older scan");
4789                 if (!join) {
4790                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4791                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4792                         wpa_s->p2p_fallback_to_go_neg = 1;
4793                 }
4794         }
4795
4796         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4797                                  wpa_s->pending_join_iface_addr);
4798         if (freq < 0 &&
4799             p2p_get_interface_addr(wpa_s->global->p2p,
4800                                    wpa_s->pending_join_dev_addr,
4801                                    iface_addr) == 0 &&
4802             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4803             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4804                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4805                            "address for join from " MACSTR " to " MACSTR
4806                            " based on newly discovered P2P peer entry",
4807                            MAC2STR(wpa_s->pending_join_iface_addr),
4808                            MAC2STR(iface_addr));
4809                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4810                           ETH_ALEN);
4811
4812                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4813                                          wpa_s->pending_join_iface_addr);
4814         }
4815         if (freq >= 0) {
4816                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4817                            "from P2P peer table: %d MHz", freq);
4818         }
4819         if (wpa_s->p2p_join_ssid_len) {
4820                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4821                            MACSTR " and SSID %s",
4822                            MAC2STR(wpa_s->pending_join_iface_addr),
4823                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4824                                         wpa_s->p2p_join_ssid_len));
4825                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4826                                   wpa_s->p2p_join_ssid,
4827                                   wpa_s->p2p_join_ssid_len);
4828         } else if (!bss) {
4829                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4830                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4831                 bss = wpa_bss_get_bssid_latest(wpa_s,
4832                                                wpa_s->pending_join_iface_addr);
4833         }
4834         if (bss) {
4835                 u8 dev_addr[ETH_ALEN];
4836
4837                 freq = bss->freq;
4838                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4839                            "from BSS table: %d MHz (SSID %s)", freq,
4840                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4841                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4842                                        dev_addr) == 0 &&
4843                     os_memcmp(wpa_s->pending_join_dev_addr,
4844                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4845                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4846                               ETH_ALEN) != 0) {
4847                         wpa_printf(MSG_DEBUG,
4848                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4849                                    MAC2STR(dev_addr),
4850                                    MAC2STR(wpa_s->pending_join_dev_addr));
4851                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4852                                   ETH_ALEN);
4853                 }
4854         }
4855         if (freq > 0) {
4856                 u16 method;
4857
4858                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4859                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4860                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4861                                        "reason=FREQ_CONFLICT");
4862                         wpas_notify_p2p_group_formation_failure(
4863                                 wpa_s, "FREQ_CONFLICT");
4864                         return;
4865                 }
4866
4867                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4868                            "prior to joining an existing group (GO " MACSTR
4869                            " freq=%u MHz)",
4870                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4871                 wpa_s->pending_pd_before_join = 1;
4872
4873                 switch (wpa_s->pending_join_wps_method) {
4874                 case WPS_PIN_DISPLAY:
4875                         method = WPS_CONFIG_KEYPAD;
4876                         break;
4877                 case WPS_PIN_KEYPAD:
4878                         method = WPS_CONFIG_DISPLAY;
4879                         break;
4880                 case WPS_PBC:
4881                         method = WPS_CONFIG_PUSHBUTTON;
4882                         break;
4883                 case WPS_P2PS:
4884                         method = WPS_CONFIG_P2PS;
4885                         break;
4886                 default:
4887                         method = 0;
4888                         break;
4889                 }
4890
4891                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4892                                                wpa_s->pending_join_dev_addr) ==
4893                      method)) {
4894                         /*
4895                          * We have already performed provision discovery for
4896                          * joining the group. Proceed directly to join
4897                          * operation without duplicated provision discovery. */
4898                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4899                                    "with " MACSTR " already done - proceed to "
4900                                    "join",
4901                                    MAC2STR(wpa_s->pending_join_dev_addr));
4902                         wpa_s->pending_pd_before_join = 0;
4903                         goto start;
4904                 }
4905
4906                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4907                                       wpa_s->pending_join_dev_addr,
4908                                       NULL, method, 1,
4909                                       freq, wpa_s->user_initiated_pd) < 0) {
4910                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4911                                    "Discovery Request before joining an "
4912                                    "existing group");
4913                         wpa_s->pending_pd_before_join = 0;
4914                         goto start;
4915                 }
4916                 return;
4917         }
4918
4919         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4920         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4921         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4922         wpas_p2p_check_join_scan_limit(wpa_s);
4923         return;
4924
4925 start:
4926         /* Start join operation immediately */
4927         wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid,
4928                             wpa_s->p2p_join_ssid_len);
4929 }
4930
4931
4932 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4933                                    const u8 *ssid, size_t ssid_len)
4934 {
4935         int ret;
4936         struct wpa_driver_scan_params params;
4937         struct wpabuf *wps_ie, *ies;
4938         size_t ielen;
4939         int freqs[2] = { 0, 0 };
4940
4941         os_memset(&params, 0, sizeof(params));
4942
4943         /* P2P Wildcard SSID */
4944         params.num_ssids = 1;
4945         if (ssid && ssid_len) {
4946                 params.ssids[0].ssid = ssid;
4947                 params.ssids[0].ssid_len = ssid_len;
4948                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4949                 wpa_s->p2p_join_ssid_len = ssid_len;
4950         } else {
4951                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4952                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4953                 wpa_s->p2p_join_ssid_len = 0;
4954         }
4955
4956         wpa_s->wps->dev.p2p = 1;
4957         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4958                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4959                                         NULL);
4960         if (wps_ie == NULL) {
4961                 wpas_p2p_scan_res_join(wpa_s, NULL);
4962                 return;
4963         }
4964
4965         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4966         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4967         if (ies == NULL) {
4968                 wpabuf_free(wps_ie);
4969                 wpas_p2p_scan_res_join(wpa_s, NULL);
4970                 return;
4971         }
4972         wpabuf_put_buf(ies, wps_ie);
4973         wpabuf_free(wps_ie);
4974
4975         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4976
4977         params.p2p_probe = 1;
4978         params.extra_ies = wpabuf_head(ies);
4979         params.extra_ies_len = wpabuf_len(ies);
4980
4981         if (!freq) {
4982                 int oper_freq;
4983                 /*
4984                  * If freq is not provided, check the operating freq of the GO
4985                  * and use a single channel scan on if possible.
4986                  */
4987                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4988                                               wpa_s->pending_join_iface_addr);
4989                 if (oper_freq > 0)
4990                         freq = oper_freq;
4991         }
4992         if (freq > 0) {
4993                 freqs[0] = freq;
4994                 params.freqs = freqs;
4995         }
4996
4997         /*
4998          * Run a scan to update BSS table and start Provision Discovery once
4999          * the new scan results become available.
5000          */
5001         ret = wpa_drv_scan(wpa_s, &params);
5002         if (!ret) {
5003                 os_get_reltime(&wpa_s->scan_trigger_time);
5004                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
5005                 wpa_s->own_scan_requested = 1;
5006         }
5007
5008         wpabuf_free(ies);
5009
5010         if (ret) {
5011                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5012                            "try again later");
5013                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5014                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5015                 wpas_p2p_check_join_scan_limit(wpa_s);
5016         }
5017 }
5018
5019
5020 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5021 {
5022         struct wpa_supplicant *wpa_s = eloop_ctx;
5023         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5024 }
5025
5026
5027 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5028                          const u8 *dev_addr, enum p2p_wps_method wps_method,
5029                          int auto_join, int op_freq,
5030                          const u8 *ssid, size_t ssid_len)
5031 {
5032         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5033                    MACSTR " dev " MACSTR " op_freq=%d)%s",
5034                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5035                    auto_join ? " (auto_join)" : "");
5036         if (ssid && ssid_len) {
5037                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5038                            wpa_ssid_txt(ssid, ssid_len));
5039         }
5040
5041         wpa_s->p2p_auto_pd = 0;
5042         wpa_s->p2p_auto_join = !!auto_join;
5043         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5044         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5045         wpa_s->pending_join_wps_method = wps_method;
5046
5047         /* Make sure we are not running find during connection establishment */
5048         wpas_p2p_stop_find(wpa_s);
5049
5050         wpa_s->p2p_join_scan_count = 0;
5051         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5052         return 0;
5053 }
5054
5055
5056 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5057                                const u8 *ssid, size_t ssid_len)
5058 {
5059         struct wpa_supplicant *group;
5060         struct p2p_go_neg_results res;
5061         struct wpa_bss *bss;
5062
5063         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5064         if (group == NULL)
5065                 return -1;
5066         if (group != wpa_s) {
5067                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5068                           sizeof(group->p2p_pin));
5069                 group->p2p_wps_method = wpa_s->p2p_wps_method;
5070         } else {
5071                 /*
5072                  * Need to mark the current interface for p2p_group_formation
5073                  * when a separate group interface is not used. This is needed
5074                  * to allow p2p_cancel stop a pending p2p_connect-join.
5075                  * wpas_p2p_init_group_interface() addresses this for the case
5076                  * where a separate group interface is used.
5077                  */
5078                 wpa_s->global->p2p_group_formation = wpa_s;
5079         }
5080
5081         group->p2p_in_provisioning = 1;
5082         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5083
5084         os_memset(&res, 0, sizeof(res));
5085         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5086         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5087                   ETH_ALEN);
5088         res.wps_method = wpa_s->pending_join_wps_method;
5089         if (freq && ssid && ssid_len) {
5090                 res.freq = freq;
5091                 res.ssid_len = ssid_len;
5092                 os_memcpy(res.ssid, ssid, ssid_len);
5093         } else {
5094                 if (ssid && ssid_len) {
5095                         bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
5096                                           ssid, ssid_len);
5097                 } else {
5098                         bss = wpa_bss_get_bssid_latest(
5099                                 wpa_s, wpa_s->pending_join_iface_addr);
5100                 }
5101                 if (bss) {
5102                         res.freq = bss->freq;
5103                         res.ssid_len = bss->ssid_len;
5104                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5105                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5106                                    bss->freq,
5107                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
5108                 } else if (ssid && ssid_len) {
5109                         res.ssid_len = ssid_len;
5110                         os_memcpy(res.ssid, ssid, ssid_len);
5111                         wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)",
5112                                    wpa_ssid_txt(ssid, ssid_len));
5113                 }
5114         }
5115
5116         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5117                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5118                            "starting client");
5119                 wpa_drv_cancel_remain_on_channel(wpa_s);
5120                 wpa_s->off_channel_freq = 0;
5121                 wpa_s->roc_waiting_drv_freq = 0;
5122         }
5123         wpas_start_wps_enrollee(group, &res);
5124
5125         /*
5126          * Allow a longer timeout for join-a-running-group than normal 15
5127          * second group formation timeout since the GO may not have authorized
5128          * our connection yet.
5129          */
5130         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5131         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5132                                wpa_s, NULL);
5133
5134         return 0;
5135 }
5136
5137
5138 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5139                                 int *force_freq, int *pref_freq, int go,
5140                                 unsigned int *pref_freq_list,
5141                                 unsigned int *num_pref_freq)
5142 {
5143         struct wpa_used_freq_data *freqs;
5144         int res, best_freq, num_unused;
5145         unsigned int freq_in_use = 0, num, i, max_pref_freq;
5146
5147         max_pref_freq = *num_pref_freq;
5148         *num_pref_freq = 0;
5149
5150         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5151                           sizeof(struct wpa_used_freq_data));
5152         if (!freqs)
5153                 return -1;
5154
5155         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5156                                         wpa_s->num_multichan_concurrent);
5157
5158         /*
5159          * It is possible that the total number of used frequencies is bigger
5160          * than the number of frequencies used for P2P, so get the system wide
5161          * number of unused frequencies.
5162          */
5163         num_unused = wpas_p2p_num_unused_channels(wpa_s);
5164
5165         wpa_printf(MSG_DEBUG,
5166                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5167                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
5168
5169         if (freq > 0) {
5170                 int ret;
5171                 if (go)
5172                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5173                 else
5174                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5175                 if (!ret) {
5176                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5177                             ieee80211_is_dfs(freq)) {
5178                                 /*
5179                                  * If freq is a DFS channel and DFS is offloaded
5180                                  * to the driver, allow P2P GO to use it.
5181                                  */
5182                                 wpa_printf(MSG_DEBUG,
5183                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5184                                            freq);
5185                         } else {
5186                                 wpa_printf(MSG_DEBUG,
5187                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5188                                            freq);
5189                                 res = -3;
5190                                 goto exit_free;
5191                         }
5192                 }
5193
5194                 for (i = 0; i < num; i++) {
5195                         if (freqs[i].freq == freq)
5196                                 freq_in_use = 1;
5197                 }
5198
5199                 if (num_unused <= 0 && !freq_in_use) {
5200                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5201                                    freq);
5202                         res = -2;
5203                         goto exit_free;
5204                 }
5205                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5206                            "requested channel (%u MHz)", freq);
5207                 *force_freq = freq;
5208                 goto exit_ok;
5209         }
5210
5211         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5212
5213         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5214                 enum wpa_driver_if_type iface_type;
5215
5216                 if (go)
5217                         iface_type = WPA_IF_P2P_GO;
5218                 else
5219                         iface_type = WPA_IF_P2P_CLIENT;
5220
5221                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5222                            best_freq, go);
5223
5224                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5225                                                  &max_pref_freq,
5226                                                  pref_freq_list);
5227                 if (!res && max_pref_freq > 0) {
5228                         *num_pref_freq = max_pref_freq;
5229                         i = 0;
5230                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5231                                                         pref_freq_list[i]) &&
5232                                i < *num_pref_freq) {
5233                                 wpa_printf(MSG_DEBUG,
5234                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5235                                            i, pref_freq_list[i]);
5236                                 i++;
5237                         }
5238                         if (i != *num_pref_freq) {
5239                                 best_freq = pref_freq_list[i];
5240                                 wpa_printf(MSG_DEBUG,
5241                                            "P2P: Using preferred_freq_list[%d]=%d",
5242                                            i, best_freq);
5243                         } else {
5244                                 wpa_printf(MSG_DEBUG,
5245                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5246                                 *num_pref_freq = 0;
5247                         }
5248                 } else {
5249                         wpa_printf(MSG_DEBUG,
5250                                    "P2P: No preferred frequency list available");
5251                 }
5252         }
5253
5254         /* We have a candidate frequency to use */
5255         if (best_freq > 0) {
5256                 if (*pref_freq == 0 && num_unused > 0) {
5257                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5258                                    best_freq);
5259                         *pref_freq = best_freq;
5260                 } else {
5261                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5262                                    best_freq);
5263                         *force_freq = best_freq;
5264                 }
5265         } else if (num_unused > 0) {
5266                 wpa_printf(MSG_DEBUG,
5267                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5268                 *force_freq = 0;
5269         } else {
5270                 wpa_printf(MSG_DEBUG,
5271                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5272                 res = -2;
5273                 goto exit_free;
5274         }
5275
5276 exit_ok:
5277         res = 0;
5278 exit_free:
5279         os_free(freqs);
5280         return res;
5281 }
5282
5283
5284 /**
5285  * wpas_p2p_connect - Request P2P Group Formation to be started
5286  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5287  * @peer_addr: Address of the peer P2P Device
5288  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5289  * @persistent_group: Whether to create a persistent group
5290  * @auto_join: Whether to select join vs. GO Negotiation automatically
5291  * @join: Whether to join an existing group (as a client) instead of starting
5292  *      Group Owner negotiation; @peer_addr is BSSID in that case
5293  * @auth: Whether to only authorize the connection instead of doing that and
5294  *      initiating Group Owner negotiation
5295  * @go_intent: GO Intent or -1 to use default
5296  * @freq: Frequency for the group or 0 for auto-selection
5297  * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5298  * @persistent_id: Persistent group credentials to use for forcing GO
5299  *      parameters or -1 to generate new values (SSID/passphrase)
5300  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5301  *      interoperability workaround when initiating group formation
5302  * @ht40: Start GO with 40 MHz channel width
5303  * @vht:  Start GO with VHT support
5304  * @vht_chwidth: Channel width supported by GO operating with VHT support
5305  *      (VHT_CHANWIDTH_*).
5306  * @group_ssid: Specific Group SSID for join or %NULL if not set
5307  * @group_ssid_len: Length of @group_ssid in octets
5308  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5309  *      failure, -2 on failure due to channel not currently available,
5310  *      -3 if forced channel is not supported
5311  */
5312 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5313                      const char *pin, enum p2p_wps_method wps_method,
5314                      int persistent_group, int auto_join, int join, int auth,
5315                      int go_intent, int freq, unsigned int vht_center_freq2,
5316                      int persistent_id, int pd, int ht40, int vht,
5317                      unsigned int vht_chwidth, const u8 *group_ssid,
5318                      size_t group_ssid_len)
5319 {
5320         int force_freq = 0, pref_freq = 0;
5321         int ret = 0, res;
5322         enum wpa_driver_if_type iftype;
5323         const u8 *if_addr;
5324         struct wpa_ssid *ssid = NULL;
5325         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5326
5327         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5328                 return -1;
5329
5330         if (persistent_id >= 0) {
5331                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5332                 if (ssid == NULL || ssid->disabled != 2 ||
5333                     ssid->mode != WPAS_MODE_P2P_GO)
5334                         return -1;
5335         }
5336
5337         os_free(wpa_s->global->add_psk);
5338         wpa_s->global->add_psk = NULL;
5339
5340         wpa_s->global->p2p_fail_on_wps_complete = 0;
5341         wpa_s->global->pending_p2ps_group = 0;
5342         wpa_s->global->pending_p2ps_group_freq = 0;
5343         wpa_s->p2ps_method_config_any = 0;
5344
5345         if (go_intent < 0)
5346                 go_intent = wpa_s->conf->p2p_go_intent;
5347
5348         if (!auth)
5349                 wpa_s->p2p_long_listen = 0;
5350
5351         wpa_s->p2p_wps_method = wps_method;
5352         wpa_s->p2p_persistent_group = !!persistent_group;
5353         wpa_s->p2p_persistent_id = persistent_id;
5354         wpa_s->p2p_go_intent = go_intent;
5355         wpa_s->p2p_connect_freq = freq;
5356         wpa_s->p2p_fallback_to_go_neg = 0;
5357         wpa_s->p2p_pd_before_go_neg = !!pd;
5358         wpa_s->p2p_go_ht40 = !!ht40;
5359         wpa_s->p2p_go_vht = !!vht;
5360         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5361         wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5362
5363         if (pin)
5364                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5365         else if (wps_method == WPS_PIN_DISPLAY) {
5366                 if (wps_generate_pin((unsigned int *) &ret) < 0)
5367                         return -1;
5368                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5369                                   "%08d", ret);
5370                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5371                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5372                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5373                            wpa_s->p2p_pin);
5374         } else
5375                 wpa_s->p2p_pin[0] = '\0';
5376
5377         if (join || auto_join) {
5378                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5379                 if (auth) {
5380                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5381                                    "connect a running group from " MACSTR,
5382                                    MAC2STR(peer_addr));
5383                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5384                         return ret;
5385                 }
5386                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5387                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5388                                            iface_addr) < 0) {
5389                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5390                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5391                                          dev_addr);
5392                 }
5393                 if (auto_join) {
5394                         os_get_reltime(&wpa_s->p2p_auto_started);
5395                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5396                                    "%ld.%06ld",
5397                                    wpa_s->p2p_auto_started.sec,
5398                                    wpa_s->p2p_auto_started.usec);
5399                 }
5400                 wpa_s->user_initiated_pd = 1;
5401                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5402                                   auto_join, freq,
5403                                   group_ssid, group_ssid_len) < 0)
5404                         return -1;
5405                 return ret;
5406         }
5407
5408         size = P2P_MAX_PREF_CHANNELS;
5409         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5410                                    go_intent == 15, pref_freq_list, &size);
5411         if (res)
5412                 return res;
5413         wpas_p2p_set_own_freq_preference(wpa_s,
5414                                          force_freq ? force_freq : pref_freq);
5415
5416         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5417
5418         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5419
5420         if (wpa_s->create_p2p_iface) {
5421                 /* Prepare to add a new interface for the group */
5422                 iftype = WPA_IF_P2P_GROUP;
5423                 if (go_intent == 15)
5424                         iftype = WPA_IF_P2P_GO;
5425                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5426                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5427                                    "interface for the group");
5428                         return -1;
5429                 }
5430
5431                 if_addr = wpa_s->pending_interface_addr;
5432         } else {
5433                 if_addr = wpa_s->own_addr;
5434                 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5435         }
5436
5437         if (auth) {
5438                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5439                                          go_intent, if_addr,
5440                                          force_freq, persistent_group, ssid,
5441                                          pref_freq) < 0)
5442                         return -1;
5443                 return ret;
5444         }
5445
5446         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5447                                   go_intent, if_addr, force_freq,
5448                                   persistent_group, ssid, pref_freq) < 0) {
5449                 if (wpa_s->create_p2p_iface)
5450                         wpas_p2p_remove_pending_group_interface(wpa_s);
5451                 return -1;
5452         }
5453         return ret;
5454 }
5455
5456
5457 /**
5458  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5459  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5460  * @freq: Frequency of the channel in MHz
5461  * @duration: Duration of the stay on the channel in milliseconds
5462  *
5463  * This callback is called when the driver indicates that it has started the
5464  * requested remain-on-channel duration.
5465  */
5466 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5467                                    unsigned int freq, unsigned int duration)
5468 {
5469         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5470                 return;
5471         wpa_printf(MSG_DEBUG, "P2P: remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d roc_waiting_drv_freq=%d freq=%u duration=%u)",
5472                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5473                    wpa_s->roc_waiting_drv_freq, freq, duration);
5474         if (wpa_s->off_channel_freq &&
5475             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5476                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5477                               wpa_s->pending_listen_duration);
5478                 wpa_s->pending_listen_freq = 0;
5479         } else {
5480                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5481                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5482                            freq, duration);
5483         }
5484 }
5485
5486
5487 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5488 {
5489         /* Limit maximum Listen state time based on driver limitation. */
5490         if (timeout > wpa_s->max_remain_on_chan)
5491                 timeout = wpa_s->max_remain_on_chan;
5492
5493         return p2p_listen(wpa_s->global->p2p, timeout);
5494 }
5495
5496
5497 /**
5498  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5499  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5500  * @freq: Frequency of the channel in MHz
5501  *
5502  * This callback is called when the driver indicates that a remain-on-channel
5503  * operation has been completed, i.e., the duration on the requested channel
5504  * has timed out.
5505  */
5506 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5507                                           unsigned int freq)
5508 {
5509         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5510                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5511                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5512         wpas_p2p_listen_work_done(wpa_s);
5513         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5514                 return;
5515         if (wpa_s->p2p_long_listen > 0)
5516                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5517         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5518                 return; /* P2P module started a new operation */
5519         if (offchannel_pending_action_tx(wpa_s))
5520                 return;
5521         if (wpa_s->p2p_long_listen > 0) {
5522                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5523                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5524         } else {
5525                 /*
5526                  * When listen duration is over, stop listen & update p2p_state
5527                  * to IDLE.
5528                  */
5529                 p2p_stop_listen(wpa_s->global->p2p);
5530         }
5531 }
5532
5533
5534 /**
5535  * wpas_p2p_group_remove - Remove a P2P group
5536  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5537  * @ifname: Network interface name of the group interface or "*" to remove all
5538  *      groups
5539  * Returns: 0 on success, -1 on failure
5540  *
5541  * This function is used to remove a P2P group. This can be used to disconnect
5542  * from a group in which the local end is a P2P Client or to end a P2P Group in
5543  * case the local end is the Group Owner. If a virtual network interface was
5544  * created for this group, that interface will be removed. Otherwise, only the
5545  * configured P2P group network will be removed from the interface.
5546  */
5547 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5548 {
5549         struct wpa_global *global = wpa_s->global;
5550         struct wpa_supplicant *calling_wpa_s = wpa_s;
5551
5552         if (os_strcmp(ifname, "*") == 0) {
5553                 struct wpa_supplicant *prev;
5554                 wpa_s = global->ifaces;
5555                 while (wpa_s) {
5556                         prev = wpa_s;
5557                         wpa_s = wpa_s->next;
5558                         if (prev->p2p_group_interface !=
5559                             NOT_P2P_GROUP_INTERFACE ||
5560                             (prev->current_ssid &&
5561                              prev->current_ssid->p2p_group))
5562                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5563                 }
5564                 return 0;
5565         }
5566
5567         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5568                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5569                         break;
5570         }
5571
5572         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5573 }
5574
5575
5576 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5577 {
5578         unsigned int r;
5579
5580         if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5581                 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5582                 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5583                 int res;
5584
5585                 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5586                                                  &size, pref_freq_list);
5587                 if (!res && size > 0) {
5588                         i = 0;
5589                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5590                                                         pref_freq_list[i]) &&
5591                                i < size) {
5592                                 wpa_printf(MSG_DEBUG,
5593                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5594                                            i, pref_freq_list[i]);
5595                                 i++;
5596                         }
5597                         if (i != size) {
5598                                 freq = pref_freq_list[i];
5599                                 wpa_printf(MSG_DEBUG,
5600                                            "P2P: Using preferred_freq_list[%d]=%d",
5601                                            i, freq);
5602                         } else {
5603                                 wpa_printf(MSG_DEBUG,
5604                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5605                         }
5606                 } else {
5607                         wpa_printf(MSG_DEBUG,
5608                                    "P2P: No preferred frequency list available");
5609                 }
5610         }
5611
5612         if (freq == 2) {
5613                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5614                            "band");
5615                 if (wpa_s->best_24_freq > 0 &&
5616                     p2p_supported_freq_go(wpa_s->global->p2p,
5617                                           wpa_s->best_24_freq)) {
5618                         freq = wpa_s->best_24_freq;
5619                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5620                                    "channel: %d MHz", freq);
5621                 } else {
5622                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5623                                 return -1;
5624                         freq = 2412 + (r % 3) * 25;
5625                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5626                                    "channel: %d MHz", freq);
5627                 }
5628         }
5629
5630         if (freq == 5) {
5631                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5632                            "band");
5633                 if (wpa_s->best_5_freq > 0 &&
5634                     p2p_supported_freq_go(wpa_s->global->p2p,
5635                                        wpa_s->best_5_freq)) {
5636                         freq = wpa_s->best_5_freq;
5637                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5638                                    "channel: %d MHz", freq);
5639                 } else {
5640                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5641                                 return -1;
5642                         freq = 5180 + (r % 4) * 20;
5643                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5644                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5645                                            "5 GHz channel for P2P group");
5646                                 return -1;
5647                         }
5648                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5649                                    "channel: %d MHz", freq);
5650                 }
5651         }
5652
5653         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5654                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5655                     ieee80211_is_dfs(freq)) {
5656                         /*
5657                          * If freq is a DFS channel and DFS is offloaded to the
5658                          * driver, allow P2P GO to use it.
5659                          */
5660                         wpa_printf(MSG_DEBUG, "P2P: "
5661                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5662                                    __func__, freq);
5663                         return freq;
5664                 }
5665                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5666                            "(%u MHz) is not supported for P2P uses",
5667                            freq);
5668                 return -1;
5669         }
5670
5671         return freq;
5672 }
5673
5674
5675 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5676                                       const struct p2p_channels *channels,
5677                                       int freq)
5678 {
5679         if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5680             p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5681             freq_included(wpa_s, channels, freq))
5682                 return 1;
5683         return 0;
5684 }
5685
5686
5687 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5688                                             struct p2p_go_neg_results *params,
5689                                             const struct p2p_channels *channels)
5690 {
5691         unsigned int i, r;
5692
5693         /* first try some random selection of the social channels */
5694         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5695                 return;
5696
5697         for (i = 0; i < 3; i++) {
5698                 params->freq = 2412 + ((r + i) % 3) * 25;
5699                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5700                         goto out;
5701         }
5702
5703         /* try all other channels in operating class 81 */
5704         for (i = 0; i < 11; i++) {
5705                 params->freq = 2412 + i * 5;
5706
5707                 /* skip social channels; covered in the previous loop */
5708                 if (params->freq == 2412 ||
5709                     params->freq == 2437 ||
5710                     params->freq == 2462)
5711                         continue;
5712
5713                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5714                         goto out;
5715         }
5716
5717         /* try all channels in operating class 115 */
5718         for (i = 0; i < 4; i++) {
5719                 params->freq = 5180 + i * 20;
5720                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5721                     freq_included(wpa_s, channels, params->freq) &&
5722                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5723                         goto out;
5724         }
5725
5726         /* try all channels in operating class 124 */
5727         for (i = 0; i < 4; i++) {
5728                 params->freq = 5745 + i * 20;
5729                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5730                     freq_included(wpa_s, channels, params->freq) &&
5731                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5732                         goto out;
5733         }
5734
5735         /* try social channel class 180 channel 2 */
5736         params->freq = 58320 + 1 * 2160;
5737         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5738             freq_included(wpa_s, channels, params->freq) &&
5739             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5740                 goto out;
5741
5742         /* try all channels in reg. class 180 */
5743         for (i = 0; i < 4; i++) {
5744                 params->freq = 58320 + i * 2160;
5745                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5746                     freq_included(wpa_s, channels, params->freq) &&
5747                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5748                         goto out;
5749         }
5750
5751         params->freq = 0;
5752         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5753         return;
5754 out:
5755         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5756                    params->freq);
5757 }
5758
5759
5760 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5761                                    struct p2p_go_neg_results *params,
5762                                    int freq, int vht_center_freq2, int ht40,
5763                                    int vht, int max_oper_chwidth,
5764                                    const struct p2p_channels *channels)
5765 {
5766         struct wpa_used_freq_data *freqs;
5767         unsigned int cand;
5768         unsigned int num, i;
5769         int ignore_no_freqs = 0;
5770
5771         os_memset(params, 0, sizeof(*params));
5772         params->role_go = 1;
5773         params->ht40 = ht40;
5774         params->vht = vht;
5775         params->max_oper_chwidth = max_oper_chwidth;
5776         params->vht_center_freq2 = vht_center_freq2;
5777
5778         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5779                           sizeof(struct wpa_used_freq_data));
5780         if (!freqs)
5781                 return -1;
5782
5783         num = get_shared_radio_freqs_data(wpa_s, freqs,
5784                                           wpa_s->num_multichan_concurrent);
5785
5786         if (wpa_s->current_ssid &&
5787             wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5788             wpa_s->wpa_state == WPA_COMPLETED) {
5789                 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5790                            __func__);
5791
5792                 /*
5793                  * If the frequency selection is done for an active P2P GO that
5794                  * is not sharing a frequency, allow to select a new frequency
5795                  * even if there are no unused frequencies as we are about to
5796                  * move the P2P GO so its frequency can be re-used.
5797                  */
5798                 for (i = 0; i < num; i++) {
5799                         if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5800                             freqs[i].flags == 0) {
5801                                 ignore_no_freqs = 1;
5802                                 break;
5803                         }
5804                 }
5805         }
5806
5807         /* try using the forced freq */
5808         if (freq) {
5809                 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) {
5810                         wpa_printf(MSG_DEBUG,
5811                                    "P2P: Forced GO freq %d MHz not accepted",
5812                                    freq);
5813                         goto fail;
5814                 }
5815
5816                 for (i = 0; i < num; i++) {
5817                         if (freqs[i].freq == freq) {
5818                                 wpa_printf(MSG_DEBUG,
5819                                            "P2P: forced freq (%d MHz) is also shared",
5820                                            freq);
5821                                 params->freq = freq;
5822                                 goto success;
5823                         }
5824                 }
5825
5826                 if (!ignore_no_freqs &&
5827                     wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5828                         wpa_printf(MSG_DEBUG,
5829                                    "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5830                                    freq);
5831                         goto fail;
5832                 }
5833
5834                 wpa_printf(MSG_DEBUG,
5835                            "P2P: force GO freq (%d MHz) on a free channel",
5836                            freq);
5837                 params->freq = freq;
5838                 goto success;
5839         }
5840
5841         /* consider using one of the shared frequencies */
5842         if (num) {
5843                 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5844                 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5845                         wpa_printf(MSG_DEBUG,
5846                                    "P2P: Use shared freq (%d MHz) for GO",
5847                                    freq);
5848                         params->freq = cand;
5849                         goto success;
5850                 }
5851
5852                 /* try using one of the shared freqs */
5853                 for (i = 0; i < num; i++) {
5854                         if (wpas_p2p_supported_freq_go(wpa_s, channels,
5855                                                        freqs[i].freq)) {
5856                                 wpa_printf(MSG_DEBUG,
5857                                            "P2P: Use shared freq (%d MHz) for GO",
5858                                            freq);
5859                                 params->freq = freqs[i].freq;
5860                                 goto success;
5861                         }
5862                 }
5863         }
5864
5865         if (!ignore_no_freqs &&
5866             wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5867                 wpa_printf(MSG_DEBUG,
5868                            "P2P: Cannot force GO on any of the channels we are already using");
5869                 goto fail;
5870         }
5871
5872         /* try using the setting from the configuration file */
5873         if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5874             wpa_s->conf->p2p_oper_channel >= 1 &&
5875             wpa_s->conf->p2p_oper_channel <= 11 &&
5876             wpas_p2p_supported_freq_go(
5877                     wpa_s, channels,
5878                     2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5879                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5880                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5881                            "frequency %d MHz", params->freq);
5882                 goto success;
5883         }
5884
5885         if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5886              wpa_s->conf->p2p_oper_reg_class == 116 ||
5887              wpa_s->conf->p2p_oper_reg_class == 117 ||
5888              wpa_s->conf->p2p_oper_reg_class == 124 ||
5889              wpa_s->conf->p2p_oper_reg_class == 125 ||
5890              wpa_s->conf->p2p_oper_reg_class == 126 ||
5891              wpa_s->conf->p2p_oper_reg_class == 127) &&
5892             wpas_p2p_supported_freq_go(wpa_s, channels,
5893                                        5000 +
5894                                        5 * wpa_s->conf->p2p_oper_channel)) {
5895                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5896                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5897                            "frequency %d MHz", params->freq);
5898                 goto success;
5899         }
5900
5901         /* Try using best channels */
5902         if (wpa_s->conf->p2p_oper_channel == 0 &&
5903             wpa_s->best_overall_freq > 0 &&
5904             wpas_p2p_supported_freq_go(wpa_s, channels,
5905                                        wpa_s->best_overall_freq)) {
5906                 params->freq = wpa_s->best_overall_freq;
5907                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5908                            "channel %d MHz", params->freq);
5909                 goto success;
5910         }
5911
5912         if (wpa_s->conf->p2p_oper_channel == 0 &&
5913             wpa_s->best_24_freq > 0 &&
5914             wpas_p2p_supported_freq_go(wpa_s, channels,
5915                                        wpa_s->best_24_freq)) {
5916                 params->freq = wpa_s->best_24_freq;
5917                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5918                            "channel %d MHz", params->freq);
5919                 goto success;
5920         }
5921
5922         if (wpa_s->conf->p2p_oper_channel == 0 &&
5923             wpa_s->best_5_freq > 0 &&
5924             wpas_p2p_supported_freq_go(wpa_s, channels,
5925                                        wpa_s->best_5_freq)) {
5926                 params->freq = wpa_s->best_5_freq;
5927                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5928                            "channel %d MHz", params->freq);
5929                 goto success;
5930         }
5931
5932         /* try using preferred channels */
5933         cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
5934         if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5935                 params->freq = cand;
5936                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5937                            "channels", params->freq);
5938                 goto success;
5939         }
5940
5941         /* Try using one of the group common freqs */
5942         if (wpa_s->p2p_group_common_freqs) {
5943                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
5944                         cand = wpa_s->p2p_group_common_freqs[i];
5945                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5946                                 params->freq = cand;
5947                                 wpa_printf(MSG_DEBUG,
5948                                            "P2P: Use freq %d MHz common with the peer",
5949                                            params->freq);
5950                                 goto success;
5951                         }
5952                 }
5953         }
5954
5955         /* no preference, select some channel */
5956         wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
5957
5958         if (params->freq == 0) {
5959                 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
5960                 goto fail;
5961         }
5962
5963 success:
5964         os_free(freqs);
5965         return 0;
5966 fail:
5967         os_free(freqs);
5968         return -1;
5969 }
5970
5971
5972 static struct wpa_supplicant *
5973 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5974                          int go)
5975 {
5976         struct wpa_supplicant *group_wpa_s;
5977
5978         if (!wpas_p2p_create_iface(wpa_s)) {
5979                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5980                         "operations");
5981                 wpa_s->p2p_first_connection_timeout = 0;
5982                 return wpa_s;
5983         }
5984
5985         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5986                                          WPA_IF_P2P_CLIENT) < 0) {
5987                 wpa_msg_global(wpa_s, MSG_ERROR,
5988                                "P2P: Failed to add group interface");
5989                 return NULL;
5990         }
5991         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5992         if (group_wpa_s == NULL) {
5993                 wpa_msg_global(wpa_s, MSG_ERROR,
5994                                "P2P: Failed to initialize group interface");
5995                 wpas_p2p_remove_pending_group_interface(wpa_s);
5996                 return NULL;
5997         }
5998
5999         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
6000                 group_wpa_s->ifname);
6001         group_wpa_s->p2p_first_connection_timeout = 0;
6002         return group_wpa_s;
6003 }
6004
6005
6006 /**
6007  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
6008  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
6009  * @persistent_group: Whether to create a persistent group
6010  * @freq: Frequency for the group or 0 to indicate no hardcoding
6011  * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80
6012  * @ht40: Start GO with 40 MHz channel width
6013  * @vht:  Start GO with VHT support
6014  * @vht_chwidth: channel bandwidth for GO operating with VHT support
6015  * Returns: 0 on success, -1 on failure
6016  *
6017  * This function creates a new P2P group with the local end as the Group Owner,
6018  * i.e., without using Group Owner Negotiation.
6019  */
6020 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
6021                        int freq, int vht_center_freq2, int ht40, int vht,
6022                        int max_oper_chwidth)
6023 {
6024         struct p2p_go_neg_results params;
6025
6026         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6027                 return -1;
6028
6029         os_free(wpa_s->global->add_psk);
6030         wpa_s->global->add_psk = NULL;
6031
6032         /* Make sure we are not running find during connection establishment */
6033         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6034         wpas_p2p_stop_find_oper(wpa_s);
6035
6036         freq = wpas_p2p_select_go_freq(wpa_s, freq);
6037         if (freq < 0)
6038                 return -1;
6039
6040         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6041                                     ht40, vht, max_oper_chwidth, NULL))
6042                 return -1;
6043         if (params.freq &&
6044             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
6045                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
6046                     ieee80211_is_dfs(params.freq)) {
6047                         /*
6048                          * If freq is a DFS channel and DFS is offloaded to the
6049                          * driver, allow P2P GO to use it.
6050                          */
6051                         wpa_printf(MSG_DEBUG,
6052                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
6053                                 __func__, params.freq);
6054                 } else {
6055                         wpa_printf(MSG_DEBUG,
6056                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
6057                                    params.freq);
6058                         return -1;
6059                 }
6060         }
6061         p2p_go_params(wpa_s->global->p2p, &params);
6062         params.persistent_group = persistent_group;
6063
6064         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6065         if (wpa_s == NULL)
6066                 return -1;
6067         wpas_start_wps_go(wpa_s, &params, 0);
6068
6069         return 0;
6070 }
6071
6072
6073 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6074                                  struct wpa_ssid *params, int addr_allocated,
6075                                  int freq, int force_scan)
6076 {
6077         struct wpa_ssid *ssid;
6078
6079         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6080         if (wpa_s == NULL)
6081                 return -1;
6082         if (force_scan)
6083                 os_get_reltime(&wpa_s->scan_min_time);
6084         wpa_s->p2p_last_4way_hs_fail = NULL;
6085
6086         wpa_supplicant_ap_deinit(wpa_s);
6087
6088         ssid = wpa_config_add_network(wpa_s->conf);
6089         if (ssid == NULL)
6090                 return -1;
6091         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
6092         wpa_config_set_network_defaults(ssid);
6093         ssid->temporary = 1;
6094         ssid->proto = WPA_PROTO_RSN;
6095         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
6096         ssid->group_cipher = WPA_CIPHER_CCMP;
6097         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6098         ssid->ssid = os_malloc(params->ssid_len);
6099         if (ssid->ssid == NULL) {
6100                 wpa_config_remove_network(wpa_s->conf, ssid->id);
6101                 return -1;
6102         }
6103         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6104         ssid->ssid_len = params->ssid_len;
6105         ssid->p2p_group = 1;
6106         ssid->export_keys = 1;
6107         if (params->psk_set) {
6108                 os_memcpy(ssid->psk, params->psk, 32);
6109                 ssid->psk_set = 1;
6110         }
6111         if (params->passphrase)
6112                 ssid->passphrase = os_strdup(params->passphrase);
6113
6114         wpa_s->show_group_started = 1;
6115         wpa_s->p2p_in_invitation = 1;
6116         wpa_s->p2p_invite_go_freq = freq;
6117         wpa_s->p2p_go_group_formation_completed = 0;
6118         wpa_s->global->p2p_group_formation = wpa_s;
6119
6120         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6121                              NULL);
6122         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6123                                wpas_p2p_group_formation_timeout,
6124                                wpa_s->parent, NULL);
6125         wpa_supplicant_select_network(wpa_s, ssid);
6126
6127         return 0;
6128 }
6129
6130
6131 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6132                                   struct wpa_ssid *ssid, int addr_allocated,
6133                                   int force_freq, int neg_freq,
6134                                   int vht_center_freq2, int ht40,
6135                                   int vht, int max_oper_chwidth,
6136                                   const struct p2p_channels *channels,
6137                                   int connection_timeout, int force_scan)
6138 {
6139         struct p2p_go_neg_results params;
6140         int go = 0, freq;
6141
6142         if (ssid->disabled != 2 || ssid->ssid == NULL)
6143                 return -1;
6144
6145         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6146             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6147                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6148                            "already running");
6149                 if (go == 0 &&
6150                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6151                                          wpa_s->parent, NULL)) {
6152                         /*
6153                          * This can happen if Invitation Response frame was lost
6154                          * and the peer (GO of a persistent group) tries to
6155                          * invite us again. Reschedule the timeout to avoid
6156                          * terminating the wait for the connection too early
6157                          * since we now know that the peer is still trying to
6158                          * invite us instead of having already started the GO.
6159                          */
6160                         wpa_printf(MSG_DEBUG,
6161                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6162                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6163                                                wpas_p2p_group_formation_timeout,
6164                                                wpa_s->parent, NULL);
6165                 }
6166                 return 0;
6167         }
6168
6169         os_free(wpa_s->global->add_psk);
6170         wpa_s->global->add_psk = NULL;
6171
6172         /* Make sure we are not running find during connection establishment */
6173         wpas_p2p_stop_find_oper(wpa_s);
6174
6175         wpa_s->p2p_fallback_to_go_neg = 0;
6176
6177         if (ssid->mode == WPAS_MODE_P2P_GO) {
6178                 if (force_freq > 0) {
6179                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6180                         if (freq < 0)
6181                                 return -1;
6182                 } else {
6183                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6184                         if (freq < 0 ||
6185                             (freq > 0 && !freq_included(wpa_s, channels, freq)))
6186                                 freq = 0;
6187                 }
6188         } else if (ssid->mode == WPAS_MODE_INFRA) {
6189                 freq = neg_freq;
6190                 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6191                         struct os_reltime now;
6192                         struct wpa_bss *bss =
6193                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6194
6195                         os_get_reltime(&now);
6196                         if (bss &&
6197                             !os_reltime_expired(&now, &bss->last_update, 5) &&
6198                             freq_included(wpa_s, channels, bss->freq))
6199                                 freq = bss->freq;
6200                         else
6201                                 freq = 0;
6202                 }
6203
6204                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6205                                              force_scan);
6206         } else {
6207                 return -1;
6208         }
6209
6210         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6211                                     ht40, vht, max_oper_chwidth, channels))
6212                 return -1;
6213
6214         params.role_go = 1;
6215         params.psk_set = ssid->psk_set;
6216         if (params.psk_set)
6217                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6218         if (ssid->passphrase) {
6219                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6220                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6221                                    "persistent group");
6222                         return -1;
6223                 }
6224                 os_strlcpy(params.passphrase, ssid->passphrase,
6225                            sizeof(params.passphrase));
6226         }
6227         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6228         params.ssid_len = ssid->ssid_len;
6229         params.persistent_group = 1;
6230
6231         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6232         if (wpa_s == NULL)
6233                 return -1;
6234
6235         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6236
6237         wpa_s->p2p_first_connection_timeout = connection_timeout;
6238         wpas_start_wps_go(wpa_s, &params, 0);
6239
6240         return 0;
6241 }
6242
6243
6244 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6245                                struct wpabuf *proberesp_ies)
6246 {
6247         struct wpa_supplicant *wpa_s = ctx;
6248         if (wpa_s->ap_iface) {
6249                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6250                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6251                         wpabuf_free(beacon_ies);
6252                         wpabuf_free(proberesp_ies);
6253                         return;
6254                 }
6255                 if (beacon_ies) {
6256                         wpabuf_free(hapd->p2p_beacon_ie);
6257                         hapd->p2p_beacon_ie = beacon_ies;
6258                 }
6259                 wpabuf_free(hapd->p2p_probe_resp_ie);
6260                 hapd->p2p_probe_resp_ie = proberesp_ies;
6261         } else {
6262                 wpabuf_free(beacon_ies);
6263                 wpabuf_free(proberesp_ies);
6264         }
6265         wpa_supplicant_ap_update_beacon(wpa_s);
6266 }
6267
6268
6269 static void wpas_p2p_idle_update(void *ctx, int idle)
6270 {
6271         struct wpa_supplicant *wpa_s = ctx;
6272         if (!wpa_s->ap_iface)
6273                 return;
6274         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6275         if (idle) {
6276                 if (wpa_s->global->p2p_fail_on_wps_complete &&
6277                     wpa_s->p2p_in_provisioning) {
6278                         wpas_p2p_grpform_fail_after_wps(wpa_s);
6279                         return;
6280                 }
6281                 wpas_p2p_set_group_idle_timeout(wpa_s);
6282         } else
6283                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6284 }
6285
6286
6287 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6288                                        struct wpa_ssid *ssid)
6289 {
6290         struct p2p_group *group;
6291         struct p2p_group_config *cfg;
6292
6293         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6294                 return NULL;
6295
6296         cfg = os_zalloc(sizeof(*cfg));
6297         if (cfg == NULL)
6298                 return NULL;
6299
6300         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6301                 cfg->persistent_group = 2;
6302         else if (ssid->p2p_persistent_group)
6303                 cfg->persistent_group = 1;
6304         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6305         if (wpa_s->max_stations &&
6306             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6307                 cfg->max_clients = wpa_s->max_stations;
6308         else
6309                 cfg->max_clients = wpa_s->conf->max_num_sta;
6310         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6311         cfg->ssid_len = ssid->ssid_len;
6312         cfg->freq = ssid->frequency;
6313         cfg->cb_ctx = wpa_s;
6314         cfg->ie_update = wpas_p2p_ie_update;
6315         cfg->idle_update = wpas_p2p_idle_update;
6316
6317         group = p2p_group_init(wpa_s->global->p2p, cfg);
6318         if (group == NULL)
6319                 os_free(cfg);
6320         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6321                 p2p_group_notif_formation_done(group);
6322         wpa_s->p2p_group = group;
6323         return group;
6324 }
6325
6326
6327 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6328                           int registrar)
6329 {
6330         struct wpa_ssid *ssid = wpa_s->current_ssid;
6331
6332         if (!wpa_s->p2p_in_provisioning) {
6333                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6334                            "provisioning not in progress");
6335                 return;
6336         }
6337
6338         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6339                 u8 go_dev_addr[ETH_ALEN];
6340                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6341                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6342                                           ssid->ssid_len);
6343                 /* Clear any stored provisioning info */
6344                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6345         }
6346
6347         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6348                              NULL);
6349         wpa_s->p2p_go_group_formation_completed = 1;
6350         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6351                 /*
6352                  * Use a separate timeout for initial data connection to
6353                  * complete to allow the group to be removed automatically if
6354                  * something goes wrong in this step before the P2P group idle
6355                  * timeout mechanism is taken into use.
6356                  */
6357                 wpa_dbg(wpa_s, MSG_DEBUG,
6358                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6359                         P2P_MAX_INITIAL_CONN_WAIT);
6360                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6361                                        wpas_p2p_group_formation_timeout,
6362                                        wpa_s->parent, NULL);
6363                 /* Complete group formation on successful data connection. */
6364                 wpa_s->p2p_go_group_formation_completed = 0;
6365         } else if (ssid) {
6366                 /*
6367                  * Use a separate timeout for initial data connection to
6368                  * complete to allow the group to be removed automatically if
6369                  * the client does not complete data connection successfully.
6370                  */
6371                 wpa_dbg(wpa_s, MSG_DEBUG,
6372                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6373                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6374                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6375                                        wpas_p2p_group_formation_timeout,
6376                                        wpa_s->parent, NULL);
6377                 /*
6378                  * Complete group formation on first successful data connection
6379                  */
6380                 wpa_s->p2p_go_group_formation_completed = 0;
6381         }
6382         if (wpa_s->global->p2p)
6383                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6384         wpas_group_formation_completed(wpa_s, 1, 0);
6385 }
6386
6387
6388 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6389                          struct wps_event_fail *fail)
6390 {
6391         if (!wpa_s->p2p_in_provisioning) {
6392                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6393                            "provisioning not in progress");
6394                 return;
6395         }
6396
6397         if (wpa_s->go_params) {
6398                 p2p_clear_provisioning_info(
6399                         wpa_s->global->p2p,
6400                         wpa_s->go_params->peer_device_addr);
6401         }
6402
6403         wpas_notify_p2p_wps_failed(wpa_s, fail);
6404
6405         if (wpa_s == wpa_s->global->p2p_group_formation) {
6406                 /*
6407                  * Allow some time for the failed WPS negotiation exchange to
6408                  * complete, but remove the group since group formation cannot
6409                  * succeed after provisioning failure.
6410                  */
6411                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6412                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6413                 eloop_deplete_timeout(0, 50000,
6414                                       wpas_p2p_group_formation_timeout,
6415                                       wpa_s->parent, NULL);
6416         }
6417 }
6418
6419
6420 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6421 {
6422         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6423             !wpa_s->p2p_in_provisioning)
6424                 return 0;
6425
6426         wpas_p2p_grpform_fail_after_wps(wpa_s);
6427
6428         return 1;
6429 }
6430
6431
6432 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6433                        const char *config_method,
6434                        enum wpas_p2p_prov_disc_use use,
6435                        struct p2ps_provision *p2ps_prov)
6436 {
6437         u16 config_methods;
6438
6439         wpa_s->global->pending_p2ps_group = 0;
6440         wpa_s->global->pending_p2ps_group_freq = 0;
6441         wpa_s->p2p_fallback_to_go_neg = 0;
6442         wpa_s->pending_pd_use = NORMAL_PD;
6443         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6444                 p2ps_prov->conncap = p2ps_group_capability(
6445                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6446                         &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6447
6448                 wpa_printf(MSG_DEBUG,
6449                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6450                            __func__, p2ps_prov->conncap,
6451                            p2ps_prov->adv_id, p2ps_prov->conncap,
6452                            p2ps_prov->status, p2ps_prov->info);
6453
6454                 config_methods = 0;
6455         } else if (os_strncmp(config_method, "display", 7) == 0)
6456                 config_methods = WPS_CONFIG_DISPLAY;
6457         else if (os_strncmp(config_method, "keypad", 6) == 0)
6458                 config_methods = WPS_CONFIG_KEYPAD;
6459         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6460                  os_strncmp(config_method, "pushbutton", 10) == 0)
6461                 config_methods = WPS_CONFIG_PUSHBUTTON;
6462         else {
6463                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6464                 os_free(p2ps_prov);
6465                 return -1;
6466         }
6467
6468         if (use == WPAS_P2P_PD_AUTO) {
6469                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6470                 wpa_s->pending_pd_config_methods = config_methods;
6471                 wpa_s->p2p_auto_pd = 1;
6472                 wpa_s->p2p_auto_join = 0;
6473                 wpa_s->pending_pd_before_join = 0;
6474                 wpa_s->auto_pd_scan_retry = 0;
6475                 wpas_p2p_stop_find(wpa_s);
6476                 wpa_s->p2p_join_scan_count = 0;
6477                 os_get_reltime(&wpa_s->p2p_auto_started);
6478                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6479                            wpa_s->p2p_auto_started.sec,
6480                            wpa_s->p2p_auto_started.usec);
6481                 wpas_p2p_join_scan(wpa_s, NULL);
6482                 return 0;
6483         }
6484
6485         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6486                 os_free(p2ps_prov);
6487                 return -1;
6488         }
6489
6490         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6491                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6492                                  0, 1);
6493 }
6494
6495
6496 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6497                               char *end)
6498 {
6499         return p2p_scan_result_text(ies, ies_len, buf, end);
6500 }
6501
6502
6503 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6504 {
6505         if (!offchannel_pending_action_tx(wpa_s))
6506                 return;
6507
6508         if (wpa_s->p2p_send_action_work) {
6509                 wpas_p2p_free_send_action_work(wpa_s);
6510                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
6511                                      wpa_s, NULL);
6512                 offchannel_send_action_done(wpa_s);
6513         }
6514
6515         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6516                    "operation request");
6517         offchannel_clear_pending_action_tx(wpa_s);
6518 }
6519
6520
6521 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6522                   enum p2p_discovery_type type,
6523                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6524                   const u8 *dev_id, unsigned int search_delay,
6525                   u8 seek_cnt, const char **seek_string, int freq)
6526 {
6527         wpas_p2p_clear_pending_action_tx(wpa_s);
6528         wpa_s->p2p_long_listen = 0;
6529
6530         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6531             wpa_s->p2p_in_provisioning)
6532                 return -1;
6533
6534         wpa_supplicant_cancel_sched_scan(wpa_s);
6535
6536         return p2p_find(wpa_s->global->p2p, timeout, type,
6537                         num_req_dev_types, req_dev_types, dev_id,
6538                         search_delay, seek_cnt, seek_string, freq);
6539 }
6540
6541
6542 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6543                                             struct wpa_scan_results *scan_res)
6544 {
6545         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6546
6547         if (wpa_s->p2p_scan_work) {
6548                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6549                 wpa_s->p2p_scan_work = NULL;
6550                 radio_work_done(work);
6551         }
6552
6553         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6554                 return;
6555
6556         /*
6557          * Indicate that results have been processed so that the P2P module can
6558          * continue pending tasks.
6559          */
6560         p2p_scan_res_handled(wpa_s->global->p2p);
6561 }
6562
6563
6564 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6565 {
6566         wpas_p2p_clear_pending_action_tx(wpa_s);
6567         wpa_s->p2p_long_listen = 0;
6568         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6569         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6570
6571         if (wpa_s->global->p2p)
6572                 p2p_stop_find(wpa_s->global->p2p);
6573
6574         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6575                 wpa_printf(MSG_DEBUG,
6576                            "P2P: Do not consider the scan results after stop_find");
6577                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6578         }
6579 }
6580
6581
6582 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6583 {
6584         wpas_p2p_stop_find_oper(wpa_s);
6585         if (!wpa_s->global->pending_group_iface_for_p2ps)
6586                 wpas_p2p_remove_pending_group_interface(wpa_s);
6587 }
6588
6589
6590 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6591 {
6592         struct wpa_supplicant *wpa_s = eloop_ctx;
6593         wpa_s->p2p_long_listen = 0;
6594 }
6595
6596
6597 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6598 {
6599         int res;
6600
6601         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6602                 return -1;
6603
6604         wpa_supplicant_cancel_sched_scan(wpa_s);
6605         wpas_p2p_clear_pending_action_tx(wpa_s);
6606
6607         if (timeout == 0) {
6608                 /*
6609                  * This is a request for unlimited Listen state. However, at
6610                  * least for now, this is mapped to a Listen state for one
6611                  * hour.
6612                  */
6613                 timeout = 3600;
6614         }
6615         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6616         wpa_s->p2p_long_listen = 0;
6617
6618         /*
6619          * Stop previous find/listen operation to avoid trying to request a new
6620          * remain-on-channel operation while the driver is still running the
6621          * previous one.
6622          */
6623         if (wpa_s->global->p2p)
6624                 p2p_stop_find(wpa_s->global->p2p);
6625
6626         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6627         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6628                 wpa_s->p2p_long_listen = timeout * 1000;
6629                 eloop_register_timeout(timeout, 0,
6630                                        wpas_p2p_long_listen_timeout,
6631                                        wpa_s, NULL);
6632         }
6633
6634         return res;
6635 }
6636
6637
6638 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6639                           u8 *buf, size_t len, int p2p_group)
6640 {
6641         struct wpabuf *p2p_ie;
6642         int ret;
6643
6644         if (wpa_s->global->p2p_disabled)
6645                 return -1;
6646         /*
6647          * Advertize mandatory cross connection capability even on
6648          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6649          */
6650         if (wpa_s->conf->p2p_disabled && p2p_group)
6651                 return -1;
6652         if (wpa_s->global->p2p == NULL)
6653                 return -1;
6654         if (bss == NULL)
6655                 return -1;
6656
6657         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6658         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6659                                p2p_group, p2p_ie);
6660         wpabuf_free(p2p_ie);
6661
6662         return ret;
6663 }
6664
6665
6666 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6667                           const u8 *dst, const u8 *bssid,
6668                           const u8 *ie, size_t ie_len,
6669                           unsigned int rx_freq, int ssi_signal)
6670 {
6671         if (wpa_s->global->p2p_disabled)
6672                 return 0;
6673         if (wpa_s->global->p2p == NULL)
6674                 return 0;
6675
6676         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6677                                  ie, ie_len, rx_freq)) {
6678         case P2P_PREQ_NOT_P2P:
6679                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6680                                  ssi_signal);
6681                 /* fall through */
6682         case P2P_PREQ_MALFORMED:
6683         case P2P_PREQ_NOT_LISTEN:
6684         case P2P_PREQ_NOT_PROCESSED:
6685         default: /* make gcc happy */
6686                 return 0;
6687         case P2P_PREQ_PROCESSED:
6688                 return 1;
6689         }
6690 }
6691
6692
6693 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6694                         const u8 *sa, const u8 *bssid,
6695                         u8 category, const u8 *data, size_t len, int freq)
6696 {
6697         if (wpa_s->global->p2p_disabled)
6698                 return;
6699         if (wpa_s->global->p2p == NULL)
6700                 return;
6701
6702         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6703                       freq);
6704 }
6705
6706
6707 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6708 {
6709         if (wpa_s->global->p2p_disabled)
6710                 return;
6711         if (wpa_s->global->p2p == NULL)
6712                 return;
6713
6714         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6715 }
6716
6717
6718 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6719 {
6720         p2p_group_deinit(wpa_s->p2p_group);
6721         wpa_s->p2p_group = NULL;
6722
6723         wpa_s->ap_configured_cb = NULL;
6724         wpa_s->ap_configured_cb_ctx = NULL;
6725         wpa_s->ap_configured_cb_data = NULL;
6726         wpa_s->connect_without_scan = NULL;
6727 }
6728
6729
6730 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6731 {
6732         wpa_s->p2p_long_listen = 0;
6733
6734         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6735                 return -1;
6736
6737         return p2p_reject(wpa_s->global->p2p, addr);
6738 }
6739
6740
6741 /* Invite to reinvoke a persistent group */
6742 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6743                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6744                     int vht_center_freq2, int ht40, int vht, int max_chwidth,
6745                     int pref_freq)
6746 {
6747         enum p2p_invite_role role;
6748         u8 *bssid = NULL;
6749         int force_freq = 0;
6750         int res;
6751         int no_pref_freq_given = pref_freq == 0;
6752         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6753
6754         wpa_s->global->p2p_invite_group = NULL;
6755         if (peer_addr)
6756                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6757         else
6758                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6759
6760         wpa_s->p2p_persistent_go_freq = freq;
6761         wpa_s->p2p_go_ht40 = !!ht40;
6762         wpa_s->p2p_go_vht = !!vht;
6763         wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
6764         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
6765         if (ssid->mode == WPAS_MODE_P2P_GO) {
6766                 role = P2P_INVITE_ROLE_GO;
6767                 if (peer_addr == NULL) {
6768                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6769                                    "address in invitation command");
6770                         return -1;
6771                 }
6772                 if (wpas_p2p_create_iface(wpa_s)) {
6773                         if (wpas_p2p_add_group_interface(wpa_s,
6774                                                          WPA_IF_P2P_GO) < 0) {
6775                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6776                                            "allocate a new interface for the "
6777                                            "group");
6778                                 return -1;
6779                         }
6780                         bssid = wpa_s->pending_interface_addr;
6781                 } else
6782                         bssid = wpa_s->own_addr;
6783         } else {
6784                 role = P2P_INVITE_ROLE_CLIENT;
6785                 peer_addr = ssid->bssid;
6786         }
6787         wpa_s->pending_invite_ssid_id = ssid->id;
6788
6789         size = P2P_MAX_PREF_CHANNELS;
6790         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6791                                    role == P2P_INVITE_ROLE_GO,
6792                                    pref_freq_list, &size);
6793         if (res)
6794                 return res;
6795
6796         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6797                 return -1;
6798
6799         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6800
6801         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6802             no_pref_freq_given && pref_freq > 0 &&
6803             wpa_s->num_multichan_concurrent > 1 &&
6804             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6805                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6806                            pref_freq);
6807                 pref_freq = 0;
6808         }
6809
6810         /*
6811          * Stop any find/listen operations before invitation and possibly
6812          * connection establishment.
6813          */
6814         wpas_p2p_stop_find_oper(wpa_s);
6815
6816         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6817                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6818                           1, pref_freq, -1);
6819 }
6820
6821
6822 /* Invite to join an active group */
6823 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6824                           const u8 *peer_addr, const u8 *go_dev_addr)
6825 {
6826         struct wpa_global *global = wpa_s->global;
6827         enum p2p_invite_role role;
6828         u8 *bssid = NULL;
6829         struct wpa_ssid *ssid;
6830         int persistent;
6831         int freq = 0, force_freq = 0, pref_freq = 0;
6832         int res;
6833         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6834
6835         wpa_s->p2p_persistent_go_freq = 0;
6836         wpa_s->p2p_go_ht40 = 0;
6837         wpa_s->p2p_go_vht = 0;
6838         wpa_s->p2p_go_vht_center_freq2 = 0;
6839         wpa_s->p2p_go_max_oper_chwidth = 0;
6840
6841         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6842                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6843                         break;
6844         }
6845         if (wpa_s == NULL) {
6846                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6847                 return -1;
6848         }
6849
6850         ssid = wpa_s->current_ssid;
6851         if (ssid == NULL) {
6852                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6853                            "invitation");
6854                 return -1;
6855         }
6856
6857         wpa_s->global->p2p_invite_group = wpa_s;
6858         persistent = ssid->p2p_persistent_group &&
6859                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6860                                         ssid->ssid, ssid->ssid_len);
6861
6862         if (ssid->mode == WPAS_MODE_P2P_GO) {
6863                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6864                 bssid = wpa_s->own_addr;
6865                 if (go_dev_addr == NULL)
6866                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6867                 freq = ssid->frequency;
6868         } else {
6869                 role = P2P_INVITE_ROLE_CLIENT;
6870                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6871                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6872                                    "invite to current group");
6873                         return -1;
6874                 }
6875                 bssid = wpa_s->bssid;
6876                 if (go_dev_addr == NULL &&
6877                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6878                         go_dev_addr = wpa_s->go_dev_addr;
6879                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6880                         (int) wpa_s->assoc_freq;
6881         }
6882         wpa_s->parent->pending_invite_ssid_id = -1;
6883
6884         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6885                 return -1;
6886
6887         size = P2P_MAX_PREF_CHANNELS;
6888         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6889                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
6890                                    pref_freq_list, &size);
6891         if (res)
6892                 return res;
6893         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6894
6895         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6896                           ssid->ssid, ssid->ssid_len, force_freq,
6897                           go_dev_addr, persistent, pref_freq, -1);
6898 }
6899
6900
6901 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6902 {
6903         struct wpa_ssid *ssid = wpa_s->current_ssid;
6904         u8 go_dev_addr[ETH_ALEN];
6905         int network_id = -1;
6906         int persistent;
6907         int freq;
6908         u8 ip[3 * 4];
6909         char ip_addr[100];
6910
6911         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6912                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6913                                      wpa_s->parent, NULL);
6914         }
6915
6916         if (!wpa_s->show_group_started || !ssid)
6917                 return;
6918
6919         wpa_s->show_group_started = 0;
6920         if (!wpa_s->p2p_go_group_formation_completed &&
6921             wpa_s->global->p2p_group_formation == wpa_s) {
6922                 wpa_dbg(wpa_s, MSG_DEBUG,
6923                         "P2P: Marking group formation completed on client on data connection");
6924                 wpa_s->p2p_go_group_formation_completed = 1;
6925                 wpa_s->global->p2p_group_formation = NULL;
6926                 wpa_s->p2p_in_provisioning = 0;
6927                 wpa_s->p2p_in_invitation = 0;
6928         }
6929
6930         os_memset(go_dev_addr, 0, ETH_ALEN);
6931         if (ssid->bssid_set)
6932                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6933         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6934                                                ssid->ssid_len);
6935         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6936
6937         if (wpa_s->global->p2p_group_formation == wpa_s)
6938                 wpa_s->global->p2p_group_formation = NULL;
6939
6940         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6941                 (int) wpa_s->assoc_freq;
6942
6943         ip_addr[0] = '\0';
6944         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6945                 int res;
6946
6947                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6948                                   " ip_addr=%u.%u.%u.%u "
6949                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6950                                   ip[0], ip[1], ip[2], ip[3],
6951                                   ip[4], ip[5], ip[6], ip[7],
6952                                   ip[8], ip[9], ip[10], ip[11]);
6953                 if (os_snprintf_error(sizeof(ip_addr), res))
6954                         ip_addr[0] = '\0';
6955         }
6956
6957         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6958                                ssid->passphrase == NULL && ssid->psk_set ?
6959                                ssid->psk : NULL,
6960                                ssid->passphrase, go_dev_addr, persistent,
6961                                ip_addr);
6962
6963         if (persistent)
6964                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6965                                                              ssid, go_dev_addr);
6966         if (network_id < 0)
6967                 network_id = ssid->id;
6968         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6969 }
6970
6971
6972 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6973                           u32 interval1, u32 duration2, u32 interval2)
6974 {
6975         int ret;
6976
6977         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6978                 return -1;
6979
6980         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6981             wpa_s->current_ssid == NULL ||
6982             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6983                 return -1;
6984
6985         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6986                                wpa_s->own_addr, wpa_s->assoc_freq,
6987                                duration1, interval1, duration2, interval2);
6988         if (ret == 0)
6989                 wpa_s->waiting_presence_resp = 1;
6990
6991         return ret;
6992 }
6993
6994
6995 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6996                         unsigned int interval)
6997 {
6998         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6999                 return -1;
7000
7001         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
7002 }
7003
7004
7005 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
7006 {
7007         if (wpa_s->current_ssid == NULL) {
7008                 /*
7009                  * current_ssid can be cleared when P2P client interface gets
7010                  * disconnected, so assume this interface was used as P2P
7011                  * client.
7012                  */
7013                 return 1;
7014         }
7015         return wpa_s->current_ssid->p2p_group &&
7016                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
7017 }
7018
7019
7020 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
7021 {
7022         struct wpa_supplicant *wpa_s = eloop_ctx;
7023
7024         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
7025                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
7026                            "disabled");
7027                 return;
7028         }
7029
7030         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
7031                    "group");
7032         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7033 }
7034
7035
7036 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7037 {
7038         int timeout;
7039
7040         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7041                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7042
7043         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7044                 return;
7045
7046         timeout = wpa_s->conf->p2p_group_idle;
7047         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7048             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7049             timeout = P2P_MAX_CLIENT_IDLE;
7050
7051         if (timeout == 0)
7052                 return;
7053
7054         if (timeout < 0) {
7055                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7056                         timeout = 0; /* special client mode no-timeout */
7057                 else
7058                         return;
7059         }
7060
7061         if (wpa_s->p2p_in_provisioning) {
7062                 /*
7063                  * Use the normal group formation timeout during the
7064                  * provisioning phase to avoid terminating this process too
7065                  * early due to group idle timeout.
7066                  */
7067                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7068                            "during provisioning");
7069                 return;
7070         }
7071
7072         if (wpa_s->show_group_started) {
7073                 /*
7074                  * Use the normal group formation timeout between the end of
7075                  * the provisioning phase and completion of 4-way handshake to
7076                  * avoid terminating this process too early due to group idle
7077                  * timeout.
7078                  */
7079                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7080                            "while waiting for initial 4-way handshake to "
7081                            "complete");
7082                 return;
7083         }
7084
7085         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7086                    timeout);
7087         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7088                                wpa_s, NULL);
7089 }
7090
7091
7092 /* Returns 1 if the interface was removed */
7093 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7094                           u16 reason_code, const u8 *ie, size_t ie_len,
7095                           int locally_generated)
7096 {
7097         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7098                 return 0;
7099
7100         if (!locally_generated)
7101                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7102                                  ie_len);
7103
7104         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7105             wpa_s->current_ssid &&
7106             wpa_s->current_ssid->p2p_group &&
7107             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7108                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7109                            "session is ending");
7110                 if (wpas_p2p_group_delete(wpa_s,
7111                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7112                     > 0)
7113                         return 1;
7114         }
7115
7116         return 0;
7117 }
7118
7119
7120 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7121                              u16 reason_code, const u8 *ie, size_t ie_len,
7122                              int locally_generated)
7123 {
7124         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7125                 return;
7126
7127         if (!locally_generated)
7128                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7129                                    ie_len);
7130 }
7131
7132
7133 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7134 {
7135         struct p2p_data *p2p = wpa_s->global->p2p;
7136
7137         if (p2p == NULL)
7138                 return;
7139
7140         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7141                 return;
7142
7143         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7144                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7145
7146         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7147                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7148
7149         if (wpa_s->wps &&
7150             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7151                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7152
7153         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7154                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7155
7156         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7157                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7158                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7159                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7160                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7161         }
7162
7163         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7164                 p2p_set_sec_dev_types(p2p,
7165                                       (void *) wpa_s->conf->sec_device_type,
7166                                       wpa_s->conf->num_sec_device_types);
7167
7168         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7169                 int i;
7170                 p2p_remove_wps_vendor_extensions(p2p);
7171                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7172                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7173                                 continue;
7174                         p2p_add_wps_vendor_extension(
7175                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
7176                 }
7177         }
7178
7179         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7180             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7181                 char country[3];
7182                 country[0] = wpa_s->conf->country[0];
7183                 country[1] = wpa_s->conf->country[1];
7184                 country[2] = 0x04;
7185                 p2p_set_country(p2p, country);
7186         }
7187
7188         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7189                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7190                                      wpa_s->conf->p2p_ssid_postfix ?
7191                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7192                                      0);
7193         }
7194
7195         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7196                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7197
7198         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7199                 u8 reg_class, channel;
7200                 int ret;
7201                 unsigned int r;
7202                 u8 channel_forced;
7203
7204                 if (wpa_s->conf->p2p_listen_reg_class &&
7205                     wpa_s->conf->p2p_listen_channel) {
7206                         reg_class = wpa_s->conf->p2p_listen_reg_class;
7207                         channel = wpa_s->conf->p2p_listen_channel;
7208                         channel_forced = 1;
7209                 } else {
7210                         reg_class = 81;
7211                         /*
7212                          * Pick one of the social channels randomly as the
7213                          * listen channel.
7214                          */
7215                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7216                                 channel = 1;
7217                         else
7218                                 channel = 1 + (r % 3) * 5;
7219                         channel_forced = 0;
7220                 }
7221                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7222                                              channel_forced);
7223                 if (ret)
7224                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7225                                    "failed: %d", ret);
7226         }
7227         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7228                 u8 op_reg_class, op_channel, cfg_op_channel;
7229                 int ret = 0;
7230                 unsigned int r;
7231                 if (wpa_s->conf->p2p_oper_reg_class &&
7232                     wpa_s->conf->p2p_oper_channel) {
7233                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7234                         op_channel = wpa_s->conf->p2p_oper_channel;
7235                         cfg_op_channel = 1;
7236                 } else {
7237                         op_reg_class = 81;
7238                         /*
7239                          * Use random operation channel from (1, 6, 11)
7240                          *if no other preference is indicated.
7241                          */
7242                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7243                                 op_channel = 1;
7244                         else
7245                                 op_channel = 1 + (r % 3) * 5;
7246                         cfg_op_channel = 0;
7247                 }
7248                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7249                                            cfg_op_channel);
7250                 if (ret)
7251                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7252                                    "failed: %d", ret);
7253         }
7254
7255         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7256                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7257                                       wpa_s->conf->p2p_pref_chan) < 0) {
7258                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7259                                    "update failed");
7260                 }
7261
7262                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7263                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7264                                    "update failed");
7265                 }
7266         }
7267
7268         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7269                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7270 }
7271
7272
7273 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7274                      int duration)
7275 {
7276         if (!wpa_s->ap_iface)
7277                 return -1;
7278         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7279                                    duration);
7280 }
7281
7282
7283 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7284 {
7285         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7286                 return -1;
7287
7288         wpa_s->global->cross_connection = enabled;
7289         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7290
7291         if (!enabled) {
7292                 struct wpa_supplicant *iface;
7293
7294                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7295                 {
7296                         if (iface->cross_connect_enabled == 0)
7297                                 continue;
7298
7299                         iface->cross_connect_enabled = 0;
7300                         iface->cross_connect_in_use = 0;
7301                         wpa_msg_global(iface->parent, MSG_INFO,
7302                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7303                                        iface->ifname,
7304                                        iface->cross_connect_uplink);
7305                 }
7306         }
7307
7308         return 0;
7309 }
7310
7311
7312 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7313 {
7314         struct wpa_supplicant *iface;
7315
7316         if (!uplink->global->cross_connection)
7317                 return;
7318
7319         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7320                 if (!iface->cross_connect_enabled)
7321                         continue;
7322                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7323                     0)
7324                         continue;
7325                 if (iface->ap_iface == NULL)
7326                         continue;
7327                 if (iface->cross_connect_in_use)
7328                         continue;
7329
7330                 iface->cross_connect_in_use = 1;
7331                 wpa_msg_global(iface->parent, MSG_INFO,
7332                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7333                                iface->ifname, iface->cross_connect_uplink);
7334         }
7335 }
7336
7337
7338 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7339 {
7340         struct wpa_supplicant *iface;
7341
7342         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7343                 if (!iface->cross_connect_enabled)
7344                         continue;
7345                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7346                     0)
7347                         continue;
7348                 if (!iface->cross_connect_in_use)
7349                         continue;
7350
7351                 wpa_msg_global(iface->parent, MSG_INFO,
7352                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7353                                iface->ifname, iface->cross_connect_uplink);
7354                 iface->cross_connect_in_use = 0;
7355         }
7356 }
7357
7358
7359 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7360 {
7361         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7362             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7363             wpa_s->cross_connect_disallowed)
7364                 wpas_p2p_disable_cross_connect(wpa_s);
7365         else
7366                 wpas_p2p_enable_cross_connect(wpa_s);
7367         if (!wpa_s->ap_iface &&
7368             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7369                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7370 }
7371
7372
7373 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7374 {
7375         wpas_p2p_disable_cross_connect(wpa_s);
7376         if (!wpa_s->ap_iface &&
7377             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7378                                          wpa_s, NULL))
7379                 wpas_p2p_set_group_idle_timeout(wpa_s);
7380 }
7381
7382
7383 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7384 {
7385         struct wpa_supplicant *iface;
7386
7387         if (!wpa_s->global->cross_connection)
7388                 return;
7389
7390         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7391                 if (iface == wpa_s)
7392                         continue;
7393                 if (iface->drv_flags &
7394                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7395                         continue;
7396                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7397                     iface != wpa_s->parent)
7398                         continue;
7399
7400                 wpa_s->cross_connect_enabled = 1;
7401                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7402                            sizeof(wpa_s->cross_connect_uplink));
7403                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7404                            "%s to %s whenever uplink is available",
7405                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7406
7407                 if (iface->ap_iface || iface->current_ssid == NULL ||
7408                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7409                     iface->cross_connect_disallowed ||
7410                     iface->wpa_state != WPA_COMPLETED)
7411                         break;
7412
7413                 wpa_s->cross_connect_in_use = 1;
7414                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7415                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7416                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7417                 break;
7418         }
7419 }
7420
7421
7422 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7423 {
7424         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7425             !wpa_s->p2p_in_provisioning)
7426                 return 0; /* not P2P client operation */
7427
7428         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7429                    "session overlap");
7430         if (wpa_s != wpa_s->parent)
7431                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
7432         wpas_p2p_group_formation_failed(wpa_s, 0);
7433         return 1;
7434 }
7435
7436
7437 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7438 {
7439         struct wpa_supplicant *wpa_s = eloop_ctx;
7440         wpas_p2p_notif_pbc_overlap(wpa_s);
7441 }
7442
7443
7444 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7445                                   enum wpas_p2p_channel_update_trig trig)
7446 {
7447         struct p2p_channels chan, cli_chan;
7448         struct wpa_used_freq_data *freqs = NULL;
7449         unsigned int num = wpa_s->num_multichan_concurrent;
7450
7451         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7452                 return;
7453
7454         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7455         if (!freqs)
7456                 return;
7457
7458         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7459
7460         os_memset(&chan, 0, sizeof(chan));
7461         os_memset(&cli_chan, 0, sizeof(cli_chan));
7462         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7463                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7464                            "channel list");
7465                 return;
7466         }
7467
7468         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7469
7470         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7471
7472         /*
7473          * The used frequencies map changed, so it is possible that a GO is
7474          * using a channel that is no longer valid for P2P use. It is also
7475          * possible that due to policy consideration, it would be preferable to
7476          * move it to a frequency already used by other station interfaces.
7477          */
7478         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7479
7480         os_free(freqs);
7481 }
7482
7483
7484 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7485                                      struct wpa_scan_results *scan_res)
7486 {
7487         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7488 }
7489
7490
7491 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7492 {
7493         struct wpa_global *global = wpa_s->global;
7494         int found = 0;
7495         const u8 *peer;
7496
7497         if (global->p2p == NULL)
7498                 return -1;
7499
7500         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7501
7502         if (wpa_s->pending_interface_name[0] &&
7503             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7504                 found = 1;
7505
7506         peer = p2p_get_go_neg_peer(global->p2p);
7507         if (peer) {
7508                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7509                            MACSTR, MAC2STR(peer));
7510                 p2p_unauthorize(global->p2p, peer);
7511                 found = 1;
7512         }
7513
7514         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7515                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7516                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7517                 found = 1;
7518         }
7519
7520         if (wpa_s->pending_pd_before_join) {
7521                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7522                 wpa_s->pending_pd_before_join = 0;
7523                 found = 1;
7524         }
7525
7526         wpas_p2p_stop_find(wpa_s);
7527
7528         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7529                 if (wpa_s == global->p2p_group_formation &&
7530                     (wpa_s->p2p_in_provisioning ||
7531                      wpa_s->parent->pending_interface_type ==
7532                      WPA_IF_P2P_CLIENT)) {
7533                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7534                                    "formation found - cancelling",
7535                                    wpa_s->ifname);
7536                         found = 1;
7537                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7538                                              wpa_s->parent, NULL);
7539                         if (wpa_s->p2p_in_provisioning) {
7540                                 wpas_group_formation_completed(wpa_s, 0, 0);
7541                                 break;
7542                         }
7543                         wpas_p2p_group_delete(wpa_s,
7544                                               P2P_GROUP_REMOVAL_REQUESTED);
7545                         break;
7546                 } else if (wpa_s->p2p_in_invitation) {
7547                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7548                                    wpa_s->ifname);
7549                         found = 1;
7550                         wpas_p2p_group_formation_failed(wpa_s, 0);
7551                         break;
7552                 }
7553         }
7554
7555         if (!found) {
7556                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7557                 return -1;
7558         }
7559
7560         return 0;
7561 }
7562
7563
7564 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7565 {
7566         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7567                 return;
7568
7569         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7570                    "being available anymore");
7571         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7572 }
7573
7574
7575 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7576                                    int freq_24, int freq_5, int freq_overall)
7577 {
7578         struct p2p_data *p2p = wpa_s->global->p2p;
7579         if (p2p == NULL)
7580                 return;
7581         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7582 }
7583
7584
7585 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7586 {
7587         u8 peer[ETH_ALEN];
7588         struct p2p_data *p2p = wpa_s->global->p2p;
7589
7590         if (p2p == NULL)
7591                 return -1;
7592
7593         if (hwaddr_aton(addr, peer))
7594                 return -1;
7595
7596         return p2p_unauthorize(p2p, peer);
7597 }
7598
7599
7600 /**
7601  * wpas_p2p_disconnect - Disconnect from a P2P Group
7602  * @wpa_s: Pointer to wpa_supplicant data
7603  * Returns: 0 on success, -1 on failure
7604  *
7605  * This can be used to disconnect from a group in which the local end is a P2P
7606  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7607  * virtual network interface was created for this group, that interface will be
7608  * removed. Otherwise, only the configured P2P group network will be removed
7609  * from the interface.
7610  */
7611 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7612 {
7613
7614         if (wpa_s == NULL)
7615                 return -1;
7616
7617         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7618                 -1 : 0;
7619 }
7620
7621
7622 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7623 {
7624         int ret;
7625
7626         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7627                 return 0;
7628
7629         ret = p2p_in_progress(wpa_s->global->p2p);
7630         if (ret == 0) {
7631                 /*
7632                  * Check whether there is an ongoing WPS provisioning step (or
7633                  * other parts of group formation) on another interface since
7634                  * p2p_in_progress() does not report this to avoid issues for
7635                  * scans during such provisioning step.
7636                  */
7637                 if (wpa_s->global->p2p_group_formation &&
7638                     wpa_s->global->p2p_group_formation != wpa_s) {
7639                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7640                                 "in group formation",
7641                                 wpa_s->global->p2p_group_formation->ifname);
7642                         ret = 1;
7643                 }
7644         }
7645
7646         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7647                 struct os_reltime now;
7648                 os_get_reltime(&now);
7649                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7650                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7651                         /* Wait for the first client has expired */
7652                         wpa_s->global->p2p_go_wait_client.sec = 0;
7653                 } else {
7654                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7655                         ret = 1;
7656                 }
7657         }
7658
7659         return ret;
7660 }
7661
7662
7663 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7664                               struct wpa_ssid *ssid)
7665 {
7666         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7667             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7668                                  wpa_s->parent, NULL) > 0) {
7669                 /**
7670                  * Remove the network by scheduling the group formation
7671                  * timeout to happen immediately. The teardown code
7672                  * needs to be scheduled to run asynch later so that we
7673                  * don't delete data from under ourselves unexpectedly.
7674                  * Calling wpas_p2p_group_formation_timeout directly
7675                  * causes a series of crashes in WPS failure scenarios.
7676                  */
7677                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7678                            "P2P group network getting removed");
7679                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7680                                        wpa_s->parent, NULL);
7681         }
7682 }
7683
7684
7685 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7686                                           const u8 *addr, const u8 *ssid,
7687                                           size_t ssid_len)
7688 {
7689         struct wpa_ssid *s;
7690         size_t i;
7691
7692         for (s = wpa_s->conf->ssid; s; s = s->next) {
7693                 if (s->disabled != 2)
7694                         continue;
7695                 if (ssid &&
7696                     (ssid_len != s->ssid_len ||
7697                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7698                         continue;
7699                 if (addr == NULL) {
7700                         if (s->mode == WPAS_MODE_P2P_GO)
7701                                 return s;
7702                         continue;
7703                 }
7704                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7705                         return s; /* peer is GO in the persistent group */
7706                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7707                         continue;
7708                 for (i = 0; i < s->num_p2p_clients; i++) {
7709                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7710                                       addr, ETH_ALEN) == 0)
7711                                 return s; /* peer is P2P client in persistent
7712                                            * group */
7713                 }
7714         }
7715
7716         return NULL;
7717 }
7718
7719
7720 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7721                                        const u8 *addr)
7722 {
7723         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7724                                  wpa_s->parent, NULL) > 0) {
7725                 /*
7726                  * This can happen if WPS provisioning step is not terminated
7727                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7728                  * peer was able to connect, there is no need to time out group
7729                  * formation after this, though. In addition, this is used with
7730                  * the initial connection wait on the GO as a separate formation
7731                  * timeout and as such, expected to be hit after the initial WPS
7732                  * provisioning step.
7733                  */
7734                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7735
7736                 if (!wpa_s->p2p_go_group_formation_completed &&
7737                     !wpa_s->group_formation_reported) {
7738                         /*
7739                          * GO has not yet notified group formation success since
7740                          * the WPS step was not completed cleanly. Do that
7741                          * notification now since the P2P Client was able to
7742                          * connect and as such, must have received the
7743                          * credential from the WPS step.
7744                          */
7745                         if (wpa_s->global->p2p)
7746                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7747                         wpas_group_formation_completed(wpa_s, 1, 0);
7748                 }
7749         }
7750         if (!wpa_s->p2p_go_group_formation_completed) {
7751                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7752                 wpa_s->p2p_go_group_formation_completed = 1;
7753                 wpa_s->global->p2p_group_formation = NULL;
7754                 wpa_s->p2p_in_provisioning = 0;
7755                 wpa_s->p2p_in_invitation = 0;
7756         }
7757         wpa_s->global->p2p_go_wait_client.sec = 0;
7758         if (addr == NULL)
7759                 return;
7760         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7761 }
7762
7763
7764 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7765                                        int group_added)
7766 {
7767         struct wpa_supplicant *group = wpa_s;
7768         int ret = 0;
7769
7770         if (wpa_s->global->p2p_group_formation)
7771                 group = wpa_s->global->p2p_group_formation;
7772         wpa_s = wpa_s->global->p2p_init_wpa_s;
7773         offchannel_send_action_done(wpa_s);
7774         if (group_added)
7775                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7776         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7777         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7778                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7779                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7780                          wpa_s->p2p_go_vht_center_freq2,
7781                          wpa_s->p2p_persistent_id,
7782                          wpa_s->p2p_pd_before_go_neg,
7783                          wpa_s->p2p_go_ht40,
7784                          wpa_s->p2p_go_vht,
7785                          wpa_s->p2p_go_max_oper_chwidth, NULL, 0);
7786         return ret;
7787 }
7788
7789
7790 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7791 {
7792         int res;
7793
7794         if (!wpa_s->p2p_fallback_to_go_neg ||
7795             wpa_s->p2p_in_provisioning <= 5)
7796                 return 0;
7797
7798         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7799                 return 0; /* peer operating as a GO */
7800
7801         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7802                 "fallback to GO Negotiation");
7803         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7804                        "reason=GO-not-found");
7805         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7806
7807         return res == 1 ? 2 : 1;
7808 }
7809
7810
7811 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7812 {
7813         struct wpa_supplicant *ifs;
7814
7815         if (wpa_s->wpa_state > WPA_SCANNING) {
7816                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7817                         "concurrent operation",
7818                         wpa_s->conf->p2p_search_delay);
7819                 return wpa_s->conf->p2p_search_delay;
7820         }
7821
7822         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7823                          radio_list) {
7824                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7825                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7826                                 "delay due to concurrent operation on "
7827                                 "interface %s",
7828                                 wpa_s->conf->p2p_search_delay,
7829                                 ifs->ifname);
7830                         return wpa_s->conf->p2p_search_delay;
7831                 }
7832         }
7833
7834         return 0;
7835 }
7836
7837
7838 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7839                                      struct wpa_ssid *s, const u8 *addr,
7840                                      int iface_addr)
7841 {
7842         struct psk_list_entry *psk, *tmp;
7843         int changed = 0;
7844
7845         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7846                               list) {
7847                 if ((iface_addr && !psk->p2p &&
7848                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7849                     (!iface_addr && psk->p2p &&
7850                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7851                         wpa_dbg(wpa_s, MSG_DEBUG,
7852                                 "P2P: Remove persistent group PSK list entry for "
7853                                 MACSTR " p2p=%u",
7854                                 MAC2STR(psk->addr), psk->p2p);
7855                         dl_list_del(&psk->list);
7856                         os_free(psk);
7857                         changed++;
7858                 }
7859         }
7860
7861         return changed;
7862 }
7863
7864
7865 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7866                          const u8 *p2p_dev_addr,
7867                          const u8 *psk, size_t psk_len)
7868 {
7869         struct wpa_ssid *ssid = wpa_s->current_ssid;
7870         struct wpa_ssid *persistent;
7871         struct psk_list_entry *p, *last;
7872
7873         if (psk_len != sizeof(p->psk))
7874                 return;
7875
7876         if (p2p_dev_addr) {
7877                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7878                         " p2p_dev_addr=" MACSTR,
7879                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7880                 if (is_zero_ether_addr(p2p_dev_addr))
7881                         p2p_dev_addr = NULL;
7882         } else {
7883                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7884                         MAC2STR(mac_addr));
7885         }
7886
7887         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7888                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7889                 /* To be added to persistent group once created */
7890                 if (wpa_s->global->add_psk == NULL) {
7891                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7892                         if (wpa_s->global->add_psk == NULL)
7893                                 return;
7894                 }
7895                 p = wpa_s->global->add_psk;
7896                 if (p2p_dev_addr) {
7897                         p->p2p = 1;
7898                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7899                 } else {
7900                         p->p2p = 0;
7901                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7902                 }
7903                 os_memcpy(p->psk, psk, psk_len);
7904                 return;
7905         }
7906
7907         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7908                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7909                 return;
7910         }
7911
7912         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7913                                              ssid->ssid_len);
7914         if (!persistent) {
7915                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7916                 return;
7917         }
7918
7919         p = os_zalloc(sizeof(*p));
7920         if (p == NULL)
7921                 return;
7922         if (p2p_dev_addr) {
7923                 p->p2p = 1;
7924                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7925         } else {
7926                 p->p2p = 0;
7927                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7928         }
7929         os_memcpy(p->psk, psk, psk_len);
7930
7931         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7932             (last = dl_list_last(&persistent->psk_list,
7933                                  struct psk_list_entry, list))) {
7934                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7935                         MACSTR " (p2p=%u) to make room for a new one",
7936                         MAC2STR(last->addr), last->p2p);
7937                 dl_list_del(&last->list);
7938                 os_free(last);
7939         }
7940
7941         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7942                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7943                                   p2p_dev_addr == NULL);
7944         if (p2p_dev_addr) {
7945                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7946                         MACSTR, MAC2STR(p2p_dev_addr));
7947         } else {
7948                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7949                         MAC2STR(mac_addr));
7950         }
7951         dl_list_add(&persistent->psk_list, &p->list);
7952
7953         if (wpa_s->parent->conf->update_config &&
7954             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7955                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7956 }
7957
7958
7959 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7960                                 struct wpa_ssid *s, const u8 *addr,
7961                                 int iface_addr)
7962 {
7963         int res;
7964
7965         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7966         if (res > 0 && wpa_s->conf->update_config &&
7967             wpa_config_write(wpa_s->confname, wpa_s->conf))
7968                 wpa_dbg(wpa_s, MSG_DEBUG,
7969                         "P2P: Failed to update configuration");
7970 }
7971
7972
7973 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7974                                       const u8 *peer, int iface_addr)
7975 {
7976         struct hostapd_data *hapd;
7977         struct hostapd_wpa_psk *psk, *prev, *rem;
7978         struct sta_info *sta;
7979
7980         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7981             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7982                 return;
7983
7984         /* Remove per-station PSK entry */
7985         hapd = wpa_s->ap_iface->bss[0];
7986         prev = NULL;
7987         psk = hapd->conf->ssid.wpa_psk;
7988         while (psk) {
7989                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7990                     (!iface_addr &&
7991                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7992                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7993                                 MACSTR " iface_addr=%d",
7994                                 MAC2STR(peer), iface_addr);
7995                         if (prev)
7996                                 prev->next = psk->next;
7997                         else
7998                                 hapd->conf->ssid.wpa_psk = psk->next;
7999                         rem = psk;
8000                         psk = psk->next;
8001                         os_free(rem);
8002                 } else {
8003                         prev = psk;
8004                         psk = psk->next;
8005                 }
8006         }
8007
8008         /* Disconnect from group */
8009         if (iface_addr)
8010                 sta = ap_get_sta(hapd, peer);
8011         else
8012                 sta = ap_get_sta_p2p(hapd, peer);
8013         if (sta) {
8014                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
8015                         " (iface_addr=%d) from group",
8016                         MAC2STR(peer), iface_addr);
8017                 hostapd_drv_sta_deauth(hapd, sta->addr,
8018                                        WLAN_REASON_DEAUTH_LEAVING);
8019                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
8020         }
8021 }
8022
8023
8024 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
8025                             int iface_addr)
8026 {
8027         struct wpa_ssid *s;
8028         struct wpa_supplicant *w;
8029         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
8030
8031         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
8032
8033         /* Remove from any persistent group */
8034         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
8035                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8036                         continue;
8037                 if (!iface_addr)
8038                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
8039                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
8040         }
8041
8042         /* Remove from any operating group */
8043         for (w = wpa_s->global->ifaces; w; w = w->next)
8044                 wpas_p2p_remove_client_go(w, peer, iface_addr);
8045 }
8046
8047
8048 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8049 {
8050         struct wpa_supplicant *wpa_s = eloop_ctx;
8051         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8052 }
8053
8054
8055 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8056 {
8057         struct wpa_supplicant *wpa_s = eloop_ctx;
8058
8059         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8060         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8061 }
8062
8063
8064 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8065                                         struct wpa_ssid *ssid)
8066 {
8067         struct wpa_supplicant *iface;
8068
8069         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8070                 if (!iface->current_ssid ||
8071                     iface->current_ssid->frequency == freq ||
8072                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8073                      !iface->current_ssid->p2p_group))
8074                         continue;
8075
8076                 /* Remove the connection with least priority */
8077                 if (!wpas_is_p2p_prioritized(iface)) {
8078                         /* STA connection has priority over existing
8079                          * P2P connection, so remove the interface. */
8080                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8081                         eloop_register_timeout(0, 0,
8082                                                wpas_p2p_group_freq_conflict,
8083                                                iface, NULL);
8084                         /* If connection in progress is P2P connection, do not
8085                          * proceed for the connection. */
8086                         if (wpa_s == iface)
8087                                 return -1;
8088                         else
8089                                 return 0;
8090                 } else {
8091                         /* P2P connection has priority, disable the STA network
8092                          */
8093                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
8094                                                        ssid);
8095                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8096                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8097                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8098                                   ETH_ALEN);
8099                         /* If P2P connection is in progress, continue
8100                          * connecting...*/
8101                         if (wpa_s == iface)
8102                                 return 0;
8103                         else
8104                                 return -1;
8105                 }
8106         }
8107
8108         return 0;
8109 }
8110
8111
8112 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8113 {
8114         struct wpa_ssid *ssid = wpa_s->current_ssid;
8115
8116         if (ssid == NULL || !ssid->p2p_group)
8117                 return 0;
8118
8119         if (wpa_s->p2p_last_4way_hs_fail &&
8120             wpa_s->p2p_last_4way_hs_fail == ssid) {
8121                 u8 go_dev_addr[ETH_ALEN];
8122                 struct wpa_ssid *persistent;
8123
8124                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8125                                               ssid->ssid,
8126                                               ssid->ssid_len) <= 0) {
8127                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8128                         goto disconnect;
8129                 }
8130
8131                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8132                         MACSTR, MAC2STR(go_dev_addr));
8133                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
8134                                                      ssid->ssid,
8135                                                      ssid->ssid_len);
8136                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8137                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8138                         goto disconnect;
8139                 }
8140                 wpa_msg_global(wpa_s->parent, MSG_INFO,
8141                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8142                                persistent->id);
8143         disconnect:
8144                 wpa_s->p2p_last_4way_hs_fail = NULL;
8145                 /*
8146                  * Remove the group from a timeout to avoid issues with caller
8147                  * continuing to use the interface if this is on a P2P group
8148                  * interface.
8149                  */
8150                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8151                                        wpa_s, NULL);
8152                 return 1;
8153         }
8154
8155         wpa_s->p2p_last_4way_hs_fail = ssid;
8156         return 0;
8157 }
8158
8159
8160 #ifdef CONFIG_WPS_NFC
8161
8162 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8163                                              struct wpabuf *p2p)
8164 {
8165         struct wpabuf *ret;
8166         size_t wsc_len;
8167
8168         if (p2p == NULL) {
8169                 wpabuf_free(wsc);
8170                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8171                 return NULL;
8172         }
8173
8174         wsc_len = wsc ? wpabuf_len(wsc) : 0;
8175         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8176         if (ret == NULL) {
8177                 wpabuf_free(wsc);
8178                 wpabuf_free(p2p);
8179                 return NULL;
8180         }
8181
8182         wpabuf_put_be16(ret, wsc_len);
8183         if (wsc)
8184                 wpabuf_put_buf(ret, wsc);
8185         wpabuf_put_be16(ret, wpabuf_len(p2p));
8186         wpabuf_put_buf(ret, p2p);
8187
8188         wpabuf_free(wsc);
8189         wpabuf_free(p2p);
8190         wpa_hexdump_buf(MSG_DEBUG,
8191                         "P2P: Generated NFC connection handover message", ret);
8192
8193         if (ndef && ret) {
8194                 struct wpabuf *tmp;
8195                 tmp = ndef_build_p2p(ret);
8196                 wpabuf_free(ret);
8197                 if (tmp == NULL) {
8198                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8199                         return NULL;
8200                 }
8201                 ret = tmp;
8202         }
8203
8204         return ret;
8205 }
8206
8207
8208 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8209                              struct wpa_ssid **ssid, u8 *go_dev_addr)
8210 {
8211         struct wpa_supplicant *iface;
8212
8213         if (go_dev_addr)
8214                 os_memset(go_dev_addr, 0, ETH_ALEN);
8215         if (ssid)
8216                 *ssid = NULL;
8217         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8218                 if (iface->wpa_state < WPA_ASSOCIATING ||
8219                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8220                     !iface->current_ssid->p2p_group ||
8221                     iface->current_ssid->mode != WPAS_MODE_INFRA)
8222                         continue;
8223                 if (ssid)
8224                         *ssid = iface->current_ssid;
8225                 if (go_dev_addr)
8226                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8227                 return iface->assoc_freq;
8228         }
8229         return 0;
8230 }
8231
8232
8233 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8234                                           int ndef)
8235 {
8236         struct wpabuf *wsc, *p2p;
8237         struct wpa_ssid *ssid;
8238         u8 go_dev_addr[ETH_ALEN];
8239         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8240
8241         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8242                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8243                 return NULL;
8244         }
8245
8246         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8247             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8248                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8249                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8250                 return NULL;
8251         }
8252
8253         if (cli_freq == 0) {
8254                 wsc = wps_build_nfc_handover_req_p2p(
8255                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8256         } else
8257                 wsc = NULL;
8258         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8259                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8260                                          ssid ? ssid->ssid_len : 0);
8261
8262         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8263 }
8264
8265
8266 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8267                                           int ndef, int tag)
8268 {
8269         struct wpabuf *wsc, *p2p;
8270         struct wpa_ssid *ssid;
8271         u8 go_dev_addr[ETH_ALEN];
8272         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8273
8274         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8275                 return NULL;
8276
8277         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8278             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8279                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8280                 return NULL;
8281
8282         if (cli_freq == 0) {
8283                 wsc = wps_build_nfc_handover_sel_p2p(
8284                         wpa_s->parent->wps,
8285                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8286                         DEV_PW_NFC_CONNECTION_HANDOVER,
8287                         wpa_s->conf->wps_nfc_dh_pubkey,
8288                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8289         } else
8290                 wsc = NULL;
8291         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8292                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8293                                          ssid ? ssid->ssid_len : 0);
8294
8295         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8296 }
8297
8298
8299 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8300                                    struct p2p_nfc_params *params)
8301 {
8302         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8303                    "connection handover (freq=%d)",
8304                    params->go_freq);
8305
8306         if (params->go_freq && params->go_ssid_len) {
8307                 wpa_s->p2p_wps_method = WPS_NFC;
8308                 wpa_s->pending_join_wps_method = WPS_NFC;
8309                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8310                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8311                           ETH_ALEN);
8312                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8313                                            params->go_ssid,
8314                                            params->go_ssid_len);
8315         }
8316
8317         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8318                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8319                                 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8320                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8321                                 params->go_ssid_len ? params->go_ssid : NULL,
8322                                 params->go_ssid_len);
8323 }
8324
8325
8326 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8327                                   struct p2p_nfc_params *params, int tag)
8328 {
8329         int res, persistent;
8330         struct wpa_ssid *ssid;
8331
8332         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8333                    "connection handover");
8334         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8335                 ssid = wpa_s->current_ssid;
8336                 if (ssid == NULL)
8337                         continue;
8338                 if (ssid->mode != WPAS_MODE_P2P_GO)
8339                         continue;
8340                 if (wpa_s->ap_iface == NULL)
8341                         continue;
8342                 break;
8343         }
8344         if (wpa_s == NULL) {
8345                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8346                 return -1;
8347         }
8348
8349         if (wpa_s->parent->p2p_oob_dev_pw_id !=
8350             DEV_PW_NFC_CONNECTION_HANDOVER &&
8351             !wpa_s->parent->p2p_oob_dev_pw) {
8352                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8353                 return -1;
8354         }
8355         res = wpas_ap_wps_add_nfc_pw(
8356                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
8357                 wpa_s->parent->p2p_oob_dev_pw,
8358                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
8359                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
8360         if (res)
8361                 return res;
8362
8363         if (!tag) {
8364                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8365                 return 0;
8366         }
8367
8368         if (!params->peer ||
8369             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8370                 return 0;
8371
8372         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8373                    " to join", MAC2STR(params->peer->p2p_device_addr));
8374
8375         wpa_s->global->p2p_invite_group = wpa_s;
8376         persistent = ssid->p2p_persistent_group &&
8377                 wpas_p2p_get_persistent(wpa_s->parent,
8378                                         params->peer->p2p_device_addr,
8379                                         ssid->ssid, ssid->ssid_len);
8380         wpa_s->parent->pending_invite_ssid_id = -1;
8381
8382         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8383                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8384                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8385                           wpa_s->global->p2p_dev_addr, persistent, 0,
8386                           wpa_s->parent->p2p_oob_dev_pw_id);
8387 }
8388
8389
8390 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8391                                     struct p2p_nfc_params *params,
8392                                     int forced_freq)
8393 {
8394         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8395                    "connection handover");
8396         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8397                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8398                                 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8399                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8400                                 NULL, 0);
8401 }
8402
8403
8404 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8405                                     struct p2p_nfc_params *params,
8406                                     int forced_freq)
8407 {
8408         int res;
8409
8410         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8411                    "connection handover");
8412         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8413                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8414                                forced_freq, wpa_s->p2p_go_vht_center_freq2,
8415                                -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8416                                NULL, 0);
8417         if (res)
8418                 return res;
8419
8420         res = wpas_p2p_listen(wpa_s, 60);
8421         if (res) {
8422                 p2p_unauthorize(wpa_s->global->p2p,
8423                                 params->peer->p2p_device_addr);
8424         }
8425
8426         return res;
8427 }
8428
8429
8430 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8431                                             const struct wpabuf *data,
8432                                             int sel, int tag, int forced_freq)
8433 {
8434         const u8 *pos, *end;
8435         u16 len, id;
8436         struct p2p_nfc_params params;
8437         int res;
8438
8439         os_memset(&params, 0, sizeof(params));
8440         params.sel = sel;
8441
8442         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8443
8444         pos = wpabuf_head(data);
8445         end = pos + wpabuf_len(data);
8446
8447         if (end - pos < 2) {
8448                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8449                            "attributes");
8450                 return -1;
8451         }
8452         len = WPA_GET_BE16(pos);
8453         pos += 2;
8454         if (len > end - pos) {
8455                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8456                            "attributes");
8457                 return -1;
8458         }
8459         params.wsc_attr = pos;
8460         params.wsc_len = len;
8461         pos += len;
8462
8463         if (end - pos < 2) {
8464                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8465                            "attributes");
8466                 return -1;
8467         }
8468         len = WPA_GET_BE16(pos);
8469         pos += 2;
8470         if (len > end - pos) {
8471                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8472                            "attributes");
8473                 return -1;
8474         }
8475         params.p2p_attr = pos;
8476         params.p2p_len = len;
8477         pos += len;
8478
8479         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8480                     params.wsc_attr, params.wsc_len);
8481         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8482                     params.p2p_attr, params.p2p_len);
8483         if (pos < end) {
8484                 wpa_hexdump(MSG_DEBUG,
8485                             "P2P: Ignored extra data after P2P attributes",
8486                             pos, end - pos);
8487         }
8488
8489         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8490         if (res)
8491                 return res;
8492
8493         if (params.next_step == NO_ACTION)
8494                 return 0;
8495
8496         if (params.next_step == BOTH_GO) {
8497                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8498                         MAC2STR(params.peer->p2p_device_addr));
8499                 return 0;
8500         }
8501
8502         if (params.next_step == PEER_CLIENT) {
8503                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8504                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8505                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8506                                 " ssid=\"%s\"",
8507                                 MAC2STR(params.peer->p2p_device_addr),
8508                                 params.go_freq,
8509                                 MAC2STR(params.go_dev_addr),
8510                                 wpa_ssid_txt(params.go_ssid,
8511                                              params.go_ssid_len));
8512                 } else {
8513                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8514                                 "peer=" MACSTR " freq=%d",
8515                                 MAC2STR(params.peer->p2p_device_addr),
8516                                 params.go_freq);
8517                 }
8518                 return 0;
8519         }
8520
8521         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8522                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8523                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8524                 return 0;
8525         }
8526
8527         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8528         wpa_s->p2p_oob_dev_pw = NULL;
8529
8530         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8531                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8532                            "received");
8533                 return -1;
8534         }
8535
8536         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8537         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8538         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8539                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8540         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8541                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8542         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8543
8544         if (tag) {
8545                 if (id < 0x10) {
8546                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8547                                    "peer OOB Device Password Id %u", id);
8548                         return -1;
8549                 }
8550                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8551                            "Device Password Id %u", id);
8552                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8553                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8554                                 params.oob_dev_pw_len -
8555                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
8556                 wpa_s->p2p_oob_dev_pw_id = id;
8557                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8558                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8559                         params.oob_dev_pw_len -
8560                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8561                 if (wpa_s->p2p_oob_dev_pw == NULL)
8562                         return -1;
8563
8564                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8565                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8566                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8567                         return -1;
8568         } else {
8569                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8570                            "without Device Password");
8571                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8572         }
8573
8574         switch (params.next_step) {
8575         case NO_ACTION:
8576         case BOTH_GO:
8577         case PEER_CLIENT:
8578                 /* already covered above */
8579                 return 0;
8580         case JOIN_GROUP:
8581                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8582         case AUTH_JOIN:
8583                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8584         case INIT_GO_NEG:
8585                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8586         case RESP_GO_NEG:
8587                 /* TODO: use own OOB Dev Pw */
8588                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8589         }
8590
8591         return -1;
8592 }
8593
8594
8595 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8596                              const struct wpabuf *data, int forced_freq)
8597 {
8598         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8599                 return -1;
8600
8601         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8602 }
8603
8604
8605 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8606                                  const struct wpabuf *req,
8607                                  const struct wpabuf *sel, int forced_freq)
8608 {
8609         struct wpabuf *tmp;
8610         int ret;
8611
8612         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8613                 return -1;
8614
8615         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8616
8617         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8618                           wpabuf_head(req), wpabuf_len(req));
8619         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8620                           wpabuf_head(sel), wpabuf_len(sel));
8621         if (forced_freq)
8622                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8623         tmp = ndef_parse_p2p(init ? sel : req);
8624         if (tmp == NULL) {
8625                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8626                 return -1;
8627         }
8628
8629         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8630                                                forced_freq);
8631         wpabuf_free(tmp);
8632
8633         return ret;
8634 }
8635
8636
8637 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8638 {
8639         const u8 *if_addr;
8640         int go_intent = wpa_s->conf->p2p_go_intent;
8641         struct wpa_supplicant *iface;
8642
8643         if (wpa_s->global->p2p == NULL)
8644                 return -1;
8645
8646         if (!enabled) {
8647                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8648                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8649                 {
8650                         if (!iface->ap_iface)
8651                                 continue;
8652                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8653                 }
8654                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8655                                                  0, NULL);
8656                 if (wpa_s->p2p_nfc_tag_enabled)
8657                         wpas_p2p_remove_pending_group_interface(wpa_s);
8658                 wpa_s->p2p_nfc_tag_enabled = 0;
8659                 return 0;
8660         }
8661
8662         if (wpa_s->global->p2p_disabled)
8663                 return -1;
8664
8665         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8666             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8667             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8668             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8669                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8670                            "to allow static handover cases");
8671                 return -1;
8672         }
8673
8674         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8675
8676         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8677         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8678         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8679         if (wpa_s->p2p_oob_dev_pw == NULL)
8680                 return -1;
8681         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8682
8683         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8684             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8685                 /*
8686                  * P2P Group Interface present and the command came on group
8687                  * interface, so enable the token for the current interface.
8688                  */
8689                 wpa_s->create_p2p_iface = 0;
8690         } else {
8691                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8692         }
8693
8694         if (wpa_s->create_p2p_iface) {
8695                 enum wpa_driver_if_type iftype;
8696                 /* Prepare to add a new interface for the group */
8697                 iftype = WPA_IF_P2P_GROUP;
8698                 if (go_intent == 15)
8699                         iftype = WPA_IF_P2P_GO;
8700                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8701                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8702                                    "interface for the group");
8703                         return -1;
8704                 }
8705
8706                 if_addr = wpa_s->pending_interface_addr;
8707         } else
8708                 if_addr = wpa_s->own_addr;
8709
8710         wpa_s->p2p_nfc_tag_enabled = enabled;
8711
8712         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8713                 struct hostapd_data *hapd;
8714                 if (iface->ap_iface == NULL)
8715                         continue;
8716                 hapd = iface->ap_iface->bss[0];
8717                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8718                 hapd->conf->wps_nfc_dh_pubkey =
8719                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8720                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8721                 hapd->conf->wps_nfc_dh_privkey =
8722                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8723                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8724                 hapd->conf->wps_nfc_dev_pw =
8725                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8726                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8727
8728                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8729                         wpa_dbg(iface, MSG_DEBUG,
8730                                 "P2P: Failed to enable NFC Tag for GO");
8731                 }
8732         }
8733         p2p_set_authorized_oob_dev_pw_id(
8734                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8735                 if_addr);
8736
8737         return 0;
8738 }
8739
8740 #endif /* CONFIG_WPS_NFC */
8741
8742
8743 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8744                                              struct wpa_used_freq_data *freqs,
8745                                              unsigned int num)
8746 {
8747         u8 curr_chan, cand, chan;
8748         unsigned int i;
8749
8750         /*
8751          * If possible, optimize the Listen channel to be a channel that is
8752          * already used by one of the other interfaces.
8753          */
8754         if (!wpa_s->conf->p2p_optimize_listen_chan)
8755                 return;
8756
8757         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8758                 return;
8759
8760         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8761         for (i = 0, cand = 0; i < num; i++) {
8762                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8763                 if (curr_chan == chan) {
8764                         cand = 0;
8765                         break;
8766                 }
8767
8768                 if (chan == 1 || chan == 6 || chan == 11)
8769                         cand = chan;
8770         }
8771
8772         if (cand) {
8773                 wpa_dbg(wpa_s, MSG_DEBUG,
8774                         "P2P: Update Listen channel to %u based on operating channel",
8775                         cand);
8776                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8777         }
8778 }
8779
8780
8781 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8782 {
8783         struct hostapd_config *conf;
8784         struct p2p_go_neg_results params;
8785         struct csa_settings csa_settings;
8786         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8787         int old_freq = current_ssid->frequency;
8788         int ret;
8789
8790         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8791                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8792                 return -1;
8793         }
8794
8795         /*
8796          * TODO: This function may not always work correctly. For example,
8797          * when we have a running GO and a BSS on a DFS channel.
8798          */
8799         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8800                 wpa_dbg(wpa_s, MSG_DEBUG,
8801                         "P2P CSA: Failed to select new frequency for GO");
8802                 return -1;
8803         }
8804
8805         if (current_ssid->frequency == params.freq) {
8806                 wpa_dbg(wpa_s, MSG_DEBUG,
8807                         "P2P CSA: Selected same frequency - not moving GO");
8808                 return 0;
8809         }
8810
8811         conf = hostapd_config_defaults();
8812         if (!conf) {
8813                 wpa_dbg(wpa_s, MSG_DEBUG,
8814                         "P2P CSA: Failed to allocate default config");
8815                 return -1;
8816         }
8817
8818         current_ssid->frequency = params.freq;
8819         if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
8820                 wpa_dbg(wpa_s, MSG_DEBUG,
8821                         "P2P CSA: Failed to create new GO config");
8822                 ret = -1;
8823                 goto out;
8824         }
8825
8826         if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
8827                 wpa_dbg(wpa_s, MSG_DEBUG,
8828                         "P2P CSA: CSA to a different band is not supported");
8829                 ret = -1;
8830                 goto out;
8831         }
8832
8833         os_memset(&csa_settings, 0, sizeof(csa_settings));
8834         csa_settings.cs_count = P2P_GO_CSA_COUNT;
8835         csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
8836         csa_settings.freq_params.freq = params.freq;
8837         csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
8838         csa_settings.freq_params.ht_enabled = conf->ieee80211n;
8839         csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
8840
8841         if (conf->ieee80211ac) {
8842                 int freq1 = 0, freq2 = 0;
8843                 u8 chan, opclass;
8844
8845                 if (ieee80211_freq_to_channel_ext(params.freq,
8846                                                   conf->secondary_channel,
8847                                                   conf->vht_oper_chwidth,
8848                                                   &opclass, &chan) ==
8849                     NUM_HOSTAPD_MODES) {
8850                         wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
8851                         ret = -1;
8852                         goto out;
8853                 }
8854
8855                 if (conf->vht_oper_centr_freq_seg0_idx)
8856                         freq1 = ieee80211_chan_to_freq(
8857                                 NULL, opclass,
8858                                 conf->vht_oper_centr_freq_seg0_idx);
8859
8860                 if (conf->vht_oper_centr_freq_seg1_idx)
8861                         freq2 = ieee80211_chan_to_freq(
8862                                 NULL, opclass,
8863                                 conf->vht_oper_centr_freq_seg1_idx);
8864
8865                 if (freq1 < 0 || freq2 < 0) {
8866                         wpa_dbg(wpa_s, MSG_DEBUG,
8867                                 "P2P CSA: Selected invalid VHT center freqs");
8868                         ret = -1;
8869                         goto out;
8870                 }
8871
8872                 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
8873                 csa_settings.freq_params.center_freq1 = freq1;
8874                 csa_settings.freq_params.center_freq2 = freq2;
8875
8876                 switch (conf->vht_oper_chwidth) {
8877                 case VHT_CHANWIDTH_80MHZ:
8878                 case VHT_CHANWIDTH_80P80MHZ:
8879                         csa_settings.freq_params.bandwidth = 80;
8880                         break;
8881                 case VHT_CHANWIDTH_160MHZ:
8882                         csa_settings.freq_params.bandwidth = 160;
8883                         break;
8884                 }
8885         }
8886
8887         ret = ap_switch_channel(wpa_s, &csa_settings);
8888 out:
8889         current_ssid->frequency = old_freq;
8890         hostapd_config_free(conf);
8891         return ret;
8892 }
8893
8894
8895 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8896 {
8897         struct p2p_go_neg_results params;
8898         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8899
8900         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8901
8902         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8903                 current_ssid->frequency);
8904
8905         /* Stop the AP functionality */
8906         /* TODO: Should do this in a way that does not indicated to possible
8907          * P2P Clients in the group that the group is terminated. */
8908         wpa_supplicant_ap_deinit(wpa_s);
8909
8910         /* Reselect the GO frequency */
8911         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8912                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8913                 wpas_p2p_group_delete(wpa_s,
8914                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8915                 return;
8916         }
8917         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8918                 params.freq);
8919
8920         if (params.freq &&
8921             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8922                 wpa_printf(MSG_DEBUG,
8923                            "P2P: Selected freq (%u MHz) is not valid for P2P",
8924                            params.freq);
8925                 wpas_p2p_group_delete(wpa_s,
8926                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8927                 return;
8928         }
8929
8930         /* Update the frequency */
8931         current_ssid->frequency = params.freq;
8932         wpa_s->connect_without_scan = current_ssid;
8933         wpa_s->reassociate = 1;
8934         wpa_s->disconnected = 0;
8935         wpa_supplicant_req_scan(wpa_s, 0, 0);
8936 }
8937
8938
8939 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8940 {
8941         struct wpa_supplicant *wpa_s = eloop_ctx;
8942
8943         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8944                 return;
8945
8946         wpas_p2p_go_update_common_freqs(wpa_s);
8947
8948         /* Do not move GO in the middle of a CSA */
8949         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8950                 wpa_printf(MSG_DEBUG,
8951                            "P2P: CSA is in progress - not moving GO");
8952                 return;
8953         }
8954
8955         /*
8956          * First, try a channel switch flow. If it is not supported or fails,
8957          * take down the GO and bring it up again.
8958          */
8959         if (wpas_p2p_move_go_csa(wpa_s) < 0)
8960                 wpas_p2p_move_go_no_csa(wpa_s);
8961 }
8962
8963
8964 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
8965 {
8966         struct wpa_supplicant *wpa_s = eloop_ctx;
8967         struct wpa_used_freq_data *freqs = NULL;
8968         unsigned int num = wpa_s->num_multichan_concurrent;
8969
8970         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8971         if (!freqs)
8972                 return;
8973
8974         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8975
8976         /* Previous attempt to move a GO was not possible -- try again. */
8977         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
8978                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
8979
8980         os_free(freqs);
8981 }
8982
8983
8984 /*
8985  * Consider moving a GO from its currently used frequency:
8986  * 1. It is possible that due to regulatory consideration the frequency
8987  *    can no longer be used and there is a need to evacuate the GO.
8988  * 2. It is possible that due to MCC considerations, it would be preferable
8989  *    to move the GO to a channel that is currently used by some other
8990  *    station interface.
8991  *
8992  * In case a frequency that became invalid is once again valid, cancel a
8993  * previously initiated GO frequency change.
8994  */
8995 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
8996                                             struct wpa_used_freq_data *freqs,
8997                                             unsigned int num)
8998 {
8999         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
9000         unsigned int timeout;
9001         int freq;
9002
9003         wpas_p2p_go_update_common_freqs(wpa_s);
9004
9005         freq = wpa_s->current_ssid->frequency;
9006         for (i = 0, invalid_freq = 0; i < num; i++) {
9007                 if (freqs[i].freq == freq) {
9008                         flags = freqs[i].flags;
9009
9010                         /* The channel is invalid, must change it */
9011                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
9012                                 wpa_dbg(wpa_s, MSG_DEBUG,
9013                                         "P2P: Freq=%d MHz no longer valid for GO",
9014                                         freq);
9015                                 invalid_freq = 1;
9016                         }
9017                 } else if (freqs[i].flags == 0) {
9018                         /* Freq is not used by any other station interface */
9019                         continue;
9020                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
9021                                                freqs[i].freq)) {
9022                         /* Freq is not valid for P2P use cases */
9023                         continue;
9024                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9025                            P2P_GO_FREQ_MOVE_SCM) {
9026                         policy_move = 1;
9027                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9028                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
9029                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9030                         policy_move = 1;
9031                 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
9032                             P2P_GO_FREQ_MOVE_SCM_ECSA) &&
9033                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9034                         if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
9035                                 policy_move = 1;
9036                         } else if ((wpa_s->drv_flags &
9037                                     WPA_DRIVER_FLAGS_AP_CSA) &&
9038                                    wpas_p2p_go_clients_support_ecsa(wpa_s)) {
9039                                 u8 chan;
9040
9041                                 /*
9042                                  * We do not support CSA between bands, so move
9043                                  * GO only within the same band.
9044                                  */
9045                                 if (wpa_s->ap_iface->current_mode->mode ==
9046                                     ieee80211_freq_to_chan(freqs[i].freq,
9047                                                            &chan))
9048                                         policy_move = 1;
9049                         }
9050                 }
9051         }
9052
9053         wpa_dbg(wpa_s, MSG_DEBUG,
9054                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9055                 invalid_freq, policy_move, flags);
9056
9057         /*
9058          * The channel is valid, or we are going to have a policy move, so
9059          * cancel timeout.
9060          */
9061         if (!invalid_freq || policy_move) {
9062                 wpa_dbg(wpa_s, MSG_DEBUG,
9063                         "P2P: Cancel a GO move from freq=%d MHz", freq);
9064                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9065
9066                 if (wpas_p2p_in_progress(wpa_s)) {
9067                         wpa_dbg(wpa_s, MSG_DEBUG,
9068                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9069                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9070                                              wpa_s, NULL);
9071                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9072                                                wpas_p2p_reconsider_moving_go,
9073                                                wpa_s, NULL);
9074                         return;
9075                 }
9076         }
9077
9078         if (!invalid_freq && (!policy_move || flags != 0)) {
9079                 wpa_dbg(wpa_s, MSG_DEBUG,
9080                         "P2P: Not initiating a GO frequency change");
9081                 return;
9082         }
9083
9084         /*
9085          * Do not consider moving GO if it is in the middle of a CSA. When the
9086          * CSA is finished this flow should be retriggered.
9087          */
9088         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9089                 wpa_dbg(wpa_s, MSG_DEBUG,
9090                         "P2P: Not initiating a GO frequency change - CSA is in progress");
9091                 return;
9092         }
9093
9094         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9095                 timeout = P2P_GO_FREQ_CHANGE_TIME;
9096         else
9097                 timeout = 0;
9098
9099         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9100                 freq, timeout);
9101         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9102         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9103 }
9104
9105
9106 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9107                                          struct wpa_used_freq_data *freqs,
9108                                          unsigned int num,
9109                                          enum wpas_p2p_channel_update_trig trig)
9110 {
9111         struct wpa_supplicant *ifs;
9112
9113         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9114                              NULL);
9115
9116         /*
9117          * Travers all the radio interfaces, and for each GO interface, check
9118          * if there is a need to move the GO from the frequency it is using,
9119          * or in case the frequency is valid again, cancel the evacuation flow.
9120          */
9121         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9122                          radio_list) {
9123                 if (ifs->current_ssid == NULL ||
9124                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9125                         continue;
9126
9127                 /*
9128                  * The GO was just started or completed channel switch, no need
9129                  * to move it.
9130                  */
9131                 if (wpa_s == ifs &&
9132                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9133                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9134                         wpa_dbg(wpa_s, MSG_DEBUG,
9135                                 "P2P: GO move - schedule re-consideration");
9136                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9137                                                wpas_p2p_reconsider_moving_go,
9138                                                wpa_s, NULL);
9139                         continue;
9140                 }
9141
9142                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9143         }
9144 }
9145
9146
9147 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9148 {
9149         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9150                 return;
9151
9152         wpas_p2p_update_channel_list(wpa_s,
9153                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9154 }
9155
9156
9157 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9158 {
9159         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9160                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9161                         "the management interface is being removed");
9162                 wpas_p2p_deinit_global(wpa_s->global);
9163         }
9164 }
9165
9166
9167 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9168 {
9169         if (wpa_s->ap_iface->bss)
9170                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9171         wpas_p2p_group_deinit(wpa_s);
9172 }