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  52  * it is currently using, but is no longer valid for P2P use cases.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  57  * Defines CSA parameters which are used when GO evacuates the no longer valid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