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  52  * it is currently using, but is no longer valid for P2P use cases.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  57  * Defines CSA parameters which are used when GO evacuates the no longer valid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 enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3421                                                  struct hostapd_hw_modes *mode,
3422                                                  u8 channel, u8 bw)
3423 {
3424         int flag = 0;
3425         enum chan_allowed res, res2;
3426
3427         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3428         if (bw == BW40MINUS) {
3429                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3430                         return NOT_ALLOWED;
3431                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3432         } else if (bw == BW40PLUS) {
3433                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3434                         return NOT_ALLOWED;
3435                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3436         } else if (bw == BW80) {
3437                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3438         }
3439
3440         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3441                 return NOT_ALLOWED;
3442         if (res == NO_IR || res2 == NO_IR)
3443                 return NO_IR;
3444         return res;
3445 }
3446
3447
3448 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3449                                    struct p2p_channels *chan,
3450                                    struct p2p_channels *cli_chan)
3451 {
3452         struct hostapd_hw_modes *mode;
3453         int cla, op, cli_cla;
3454
3455         if (wpa_s->hw.modes == NULL) {
3456                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3457                            "of all supported channels; assume dualband "
3458                            "support");
3459                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3460         }
3461
3462         cla = cli_cla = 0;
3463
3464         for (op = 0; op_class[op].op_class; op++) {
3465                 const struct p2p_oper_class_map *o = &op_class[op];
3466                 u8 ch;
3467                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3468
3469                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3470                 if (mode == NULL)
3471                         continue;
3472                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3473                         wpa_s->global->p2p_24ghz_social_channels = 1;
3474                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3475                         enum chan_allowed res;
3476                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3477                         if (res == ALLOWED) {
3478                                 if (reg == NULL) {
3479                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3480                                                    o->op_class);
3481                                         reg = &chan->reg_class[cla];
3482                                         cla++;
3483                                         reg->reg_class = o->op_class;
3484                                 }
3485                                 reg->channel[reg->channels] = ch;
3486                                 reg->channels++;
3487                         } else if (res == NO_IR &&
3488                                    wpa_s->conf->p2p_add_cli_chan) {
3489                                 if (cli_reg == NULL) {
3490                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3491                                                    o->op_class);
3492                                         cli_reg = &cli_chan->reg_class[cli_cla];
3493                                         cli_cla++;
3494                                         cli_reg->reg_class = o->op_class;
3495                                 }
3496                                 cli_reg->channel[cli_reg->channels] = ch;
3497                                 cli_reg->channels++;
3498                         }
3499                 }
3500                 if (reg) {
3501                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3502                                     reg->channel, reg->channels);
3503                 }
3504                 if (cli_reg) {
3505                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3506                                     cli_reg->channel, cli_reg->channels);
3507                 }
3508         }
3509
3510         chan->reg_classes = cla;
3511         cli_chan->reg_classes = cli_cla;
3512
3513         return 0;
3514 }
3515
3516
3517 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3518                            struct hostapd_hw_modes *mode, u8 channel)
3519 {
3520         int op;
3521         enum chan_allowed ret;
3522
3523         for (op = 0; op_class[op].op_class; op++) {
3524                 const struct p2p_oper_class_map *o = &op_class[op];
3525                 u8 ch;
3526
3527                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3528                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3529                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3530                             ch != channel)
3531                                 continue;
3532                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3533                         if (ret == ALLOWED)
3534                                 return (o->bw == BW40MINUS) ? -1 : 1;
3535                 }
3536         }
3537         return 0;
3538 }
3539
3540
3541 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3542                               struct hostapd_hw_modes *mode, u8 channel)
3543 {
3544         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3545                 return 0;
3546
3547         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3548 }
3549
3550
3551 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3552                         size_t buf_len)
3553 {
3554         struct wpa_supplicant *wpa_s = ctx;
3555
3556         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3557                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3558                         break;
3559         }
3560         if (wpa_s == NULL)
3561                 return -1;
3562
3563         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3564 }
3565
3566
3567 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3568                                               const u8 *ssid, size_t ssid_len)
3569 {
3570         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3571                 struct wpa_ssid *s = wpa_s->current_ssid;
3572                 if (s == NULL)
3573                         continue;
3574                 if (s->mode != WPAS_MODE_P2P_GO &&
3575                     s->mode != WPAS_MODE_AP &&
3576                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3577                         continue;
3578                 if (s->ssid_len != ssid_len ||
3579                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3580                         continue;
3581                 return wpa_s;
3582         }
3583
3584         return NULL;
3585
3586 }
3587
3588
3589 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3590                                                   const u8 *peer_dev_addr)
3591 {
3592         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3593                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3594                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3595                         continue;
3596                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3597                         return wpa_s;
3598         }
3599
3600         return NULL;
3601 }
3602
3603
3604 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3605 {
3606         struct wpa_supplicant *wpa_s = ctx;
3607
3608         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3609 }
3610
3611
3612 static int wpas_is_concurrent_session_active(void *ctx)
3613 {
3614         struct wpa_supplicant *wpa_s = ctx;
3615         struct wpa_supplicant *ifs;
3616
3617         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3618                 if (ifs == wpa_s)
3619                         continue;
3620                 if (ifs->wpa_state > WPA_ASSOCIATED)
3621                         return 1;
3622         }
3623         return 0;
3624 }
3625
3626
3627 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3628 {
3629         struct wpa_supplicant *wpa_s = ctx;
3630         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3631 }
3632
3633
3634 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3635                                   const char *conf_p2p_dev)
3636 {
3637         struct wpa_interface iface;
3638         struct wpa_supplicant *p2pdev_wpa_s;
3639         char ifname[100];
3640         char force_name[100];
3641         int ret;
3642
3643         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3644                           wpa_s->ifname);
3645         if (os_snprintf_error(sizeof(ifname), ret))
3646                 return -1;
3647         force_name[0] = '\0';
3648         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3649         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3650                              force_name, wpa_s->pending_interface_addr, NULL);
3651         if (ret < 0) {
3652                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3653                 return ret;
3654         }
3655         os_strlcpy(wpa_s->pending_interface_name, ifname,
3656                    sizeof(wpa_s->pending_interface_name));
3657
3658         os_memset(&iface, 0, sizeof(iface));
3659         iface.p2p_mgmt = 1;
3660         iface.ifname = wpa_s->pending_interface_name;
3661         iface.driver = wpa_s->driver->name;
3662         iface.driver_param = wpa_s->conf->driver_param;
3663
3664         /*
3665          * If a P2P Device configuration file was given, use it as the interface
3666          * configuration file (instead of using parent's configuration file.
3667          */
3668         if (conf_p2p_dev) {
3669                 iface.confname = conf_p2p_dev;
3670                 iface.ctrl_interface = NULL;
3671         } else {
3672                 iface.confname = wpa_s->confname;
3673                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3674         }
3675
3676         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3677         if (!p2pdev_wpa_s) {
3678                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3679                 return -1;
3680         }
3681
3682         wpa_s->pending_interface_name[0] = '\0';
3683         return 0;
3684 }
3685
3686
3687 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3688                                const u8 *noa, size_t noa_len)
3689 {
3690         struct wpa_supplicant *wpa_s, *intf = ctx;
3691         char hex[100];
3692
3693         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3694                 if (wpa_s->waiting_presence_resp)
3695                         break;
3696         }
3697         if (!wpa_s) {
3698                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3699                 return;
3700         }
3701         wpa_s->waiting_presence_resp = 0;
3702
3703         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3704         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3705                 " status=%u noa=%s", MAC2STR(src), status, hex);
3706 }
3707
3708
3709 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3710                                      size_t ssid_len, u8 *go_dev_addr,
3711                                      u8 *ret_ssid, size_t *ret_ssid_len,
3712                                      u8 *intended_iface_addr)
3713 {
3714         struct wpa_supplicant *wpa_s = ctx;
3715         struct wpa_ssid *s;
3716
3717         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3718         if (s) {
3719                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3720                 *ret_ssid_len = s->ssid_len;
3721                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3722
3723                 if (s->mode != WPAS_MODE_P2P_GO) {
3724                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3725                 } else if (wpas_p2p_create_iface(wpa_s)) {
3726                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3727                                 return 0;
3728
3729                         os_memcpy(intended_iface_addr,
3730                                   wpa_s->pending_interface_addr, ETH_ALEN);
3731                 } else {
3732                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3733                                   ETH_ALEN);
3734                 }
3735                 return 1;
3736         }
3737
3738         return 0;
3739 }
3740
3741
3742 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3743                             u8 *ssid, size_t *ssid_len, int *group_iface,
3744                             unsigned int *freq)
3745 {
3746         struct wpa_supplicant *wpa_s = ctx;
3747         struct wpa_supplicant *go;
3748         struct wpa_ssid *s;
3749
3750         /*
3751          * group_iface will be set to 1 only if a dedicated interface for P2P
3752          * role is required. First, we try to reuse an active GO. However,
3753          * if it is not present, we will try to reactivate an existing
3754          * persistent group and set group_iface to 1, so the caller will know
3755          * that the pending interface should be used.
3756          */
3757         *group_iface = 0;
3758
3759         if (freq)
3760                 *freq = 0;
3761
3762         go = wpas_p2p_get_go_group(wpa_s);
3763         if (!go) {
3764                 s = wpas_p2p_get_persistent_go(wpa_s);
3765                 *group_iface = wpas_p2p_create_iface(wpa_s);
3766                 if (s)
3767                         os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3768                 else
3769                         return 0;
3770         } else {
3771                 s = go->current_ssid;
3772                 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3773                 if (freq)
3774                         *freq = go->assoc_freq;
3775         }
3776
3777         os_memcpy(ssid, s->ssid, s->ssid_len);
3778         *ssid_len = s->ssid_len;
3779
3780         return 1;
3781 }
3782
3783
3784 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3785                                     const u8 *ssid, size_t ssid_len)
3786 {
3787         struct wpa_supplicant *wpa_s = ctx;
3788         struct wpa_ssid *s;
3789         int save_config = 0;
3790         size_t i;
3791
3792         /* Start with our first choice of Persistent Groups */
3793         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3794                 if (go && ssid && ssid_len &&
3795                     s->ssid_len == ssid_len &&
3796                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3797                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3798                         break;
3799
3800                 /* Remove stale persistent group */
3801                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3802                         wpa_config_remove_network(wpa_s->conf, s->id);
3803                         save_config = 1;
3804                         continue;
3805                 }
3806
3807                 for (i = 0; i < s->num_p2p_clients; i++) {
3808                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3809                                       peer, ETH_ALEN) != 0)
3810                                 continue;
3811
3812                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3813                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3814                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3815                         break;
3816                 }
3817                 s->num_p2p_clients--;
3818                 save_config = 1;
3819         }
3820
3821         if (save_config)
3822                 p2p_config_write(wpa_s);
3823
3824         /* Return TRUE if valid SSID remains */
3825         return s != NULL;
3826 }
3827
3828
3829 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3830                                        const u8 *feat_cap, size_t feat_cap_len)
3831 {
3832         static const char pref[] = " feature_cap=";
3833         int ret;
3834
3835         buf[0] = '\0';
3836
3837         /*
3838          * We expect a feature capability to contain at least one byte to be
3839          * reported. The string buffer provided by the caller function is
3840          * expected to be big enough to contain all bytes of the attribute for
3841          * known specifications. This function truncates the reported bytes if
3842          * the feature capability data exceeds the string buffer size.
3843          */
3844         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3845                 return;
3846
3847         os_memcpy(buf, pref, sizeof(pref));
3848         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3849                                buf_len - sizeof(pref) + 1,
3850                                feat_cap, feat_cap_len);
3851
3852         if (ret != (2 * (int) feat_cap_len))
3853                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3854 }
3855
3856
3857 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3858                                     const u8 *adv_mac, const u8 *ses_mac,
3859                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3860                                     u8 conncap, int passwd_id,
3861                                     const u8 *persist_ssid,
3862                                     size_t persist_ssid_size, int response_done,
3863                                     int prov_start, const char *session_info,
3864                                     const u8 *feat_cap, size_t feat_cap_len,
3865                                     unsigned int freq)
3866 {
3867         struct wpa_supplicant *wpa_s = ctx;
3868         u8 mac[ETH_ALEN];
3869         struct wpa_ssid *persistent_go, *stale, *s = NULL;
3870         int save_config = 0;
3871         struct wpa_supplicant *go_wpa_s;
3872         char feat_cap_str[256];
3873
3874         if (!dev)
3875                 return;
3876
3877         os_memset(mac, 0, ETH_ALEN);
3878         if (!adv_mac)
3879                 adv_mac = mac;
3880         if (!ses_mac)
3881                 ses_mac = mac;
3882         if (!grp_mac)
3883                 grp_mac = mac;
3884
3885         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3886                                    feat_cap, feat_cap_len);
3887
3888         if (prov_start) {
3889                 if (session_info == NULL) {
3890                         wpa_msg_global(wpa_s, MSG_INFO,
3891                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3892                                        " adv_id=%x conncap=%x"
3893                                        " adv_mac=" MACSTR
3894                                        " session=%x mac=" MACSTR
3895                                        " dev_passwd_id=%d%s",
3896                                        MAC2STR(dev), adv_id, conncap,
3897                                        MAC2STR(adv_mac),
3898                                        ses_id, MAC2STR(ses_mac),
3899                                        passwd_id, feat_cap_str);
3900                 } else {
3901                         wpa_msg_global(wpa_s, MSG_INFO,
3902                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3903                                        " adv_id=%x conncap=%x"
3904                                        " adv_mac=" MACSTR
3905                                        " session=%x mac=" MACSTR
3906                                        " dev_passwd_id=%d info='%s'%s",
3907                                        MAC2STR(dev), adv_id, conncap,
3908                                        MAC2STR(adv_mac),
3909                                        ses_id, MAC2STR(ses_mac),
3910                                        passwd_id, session_info, feat_cap_str);
3911                 }
3912                 return;
3913         }
3914
3915         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
3916         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3917
3918         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
3919                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3920                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3921
3922                 if (persistent_go && !persistent_go->num_p2p_clients) {
3923                         /* remove empty persistent GO */
3924                         wpa_config_remove_network(wpa_s->conf,
3925                                                   persistent_go->id);
3926                 }
3927
3928                 wpa_msg_global(wpa_s, MSG_INFO,
3929                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3930                                " status=%d"
3931                                " adv_id=%x adv_mac=" MACSTR
3932                                " session=%x mac=" MACSTR "%s",
3933                                MAC2STR(dev), status,
3934                                adv_id, MAC2STR(adv_mac),
3935                                ses_id, MAC2STR(ses_mac), feat_cap_str);
3936                 return;
3937         }
3938
3939         /* Clean up stale persistent groups with this device */
3940         if (persist_ssid && persist_ssid_size)
3941                 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
3942                                             persist_ssid_size);
3943
3944         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
3945             is_zero_ether_addr(grp_mac)) {
3946                 wpa_dbg(wpa_s, MSG_ERROR,
3947                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
3948                 return;
3949         }
3950
3951         for (;;) {
3952                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
3953                 if (!stale)
3954                         break;
3955
3956                 if (s && s->ssid_len == stale->ssid_len &&
3957                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
3958                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
3959                         break;
3960
3961                 /* Remove stale persistent group */
3962                 if (stale->mode != WPAS_MODE_P2P_GO ||
3963                     stale->num_p2p_clients <= 1) {
3964                         wpa_config_remove_network(wpa_s->conf, stale->id);
3965                 } else {
3966                         size_t i;
3967
3968                         for (i = 0; i < stale->num_p2p_clients; i++) {
3969                                 if (os_memcmp(stale->p2p_client_list +
3970                                               i * ETH_ALEN,
3971                                               dev, ETH_ALEN) == 0) {
3972                                         os_memmove(stale->p2p_client_list +
3973                                                    i * ETH_ALEN,
3974                                                    stale->p2p_client_list +
3975                                                    (i + 1) * ETH_ALEN,
3976                                                    (stale->num_p2p_clients -
3977                                                     i - 1) * ETH_ALEN);
3978                                         break;
3979                                 }
3980                         }
3981                         stale->num_p2p_clients--;
3982                 }
3983                 save_config = 1;
3984         }
3985
3986         if (save_config)
3987                 p2p_config_write(wpa_s);
3988
3989         if (s) {
3990                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3991                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3992
3993                 if (persistent_go && s != persistent_go &&
3994                     !persistent_go->num_p2p_clients) {
3995                         /* remove empty persistent GO */
3996                         wpa_config_remove_network(wpa_s->conf,
3997                                                   persistent_go->id);
3998                         /* Save config */
3999                 }
4000
4001                 wpa_msg_global(wpa_s, MSG_INFO,
4002                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4003                                " status=%d"
4004                                " adv_id=%x adv_mac=" MACSTR
4005                                " session=%x mac=" MACSTR
4006                                " persist=%d%s",
4007                                MAC2STR(dev), status,
4008                                adv_id, MAC2STR(adv_mac),
4009                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4010                 return;
4011         }
4012
4013         if (conncap == P2PS_SETUP_GROUP_OWNER) {
4014                 /*
4015                  * We need to copy the interface name. Simply saving a
4016                  * pointer isn't enough, since if we use pending_interface_name
4017                  * it will be overwritten when the group is added.
4018                  */
4019                 char go_ifname[100];
4020
4021                 go_ifname[0] = '\0';
4022                 if (!go_wpa_s) {
4023                         wpa_s->global->pending_p2ps_group = 1;
4024                         wpa_s->global->pending_p2ps_group_freq = freq;
4025
4026                         if (!wpas_p2p_create_iface(wpa_s))
4027                                 os_memcpy(go_ifname, wpa_s->ifname,
4028                                           sizeof(go_ifname));
4029                         else if (wpa_s->pending_interface_name[0])
4030                                 os_memcpy(go_ifname,
4031                                           wpa_s->pending_interface_name,
4032                                           sizeof(go_ifname));
4033
4034                         if (!go_ifname[0]) {
4035                                 wpas_p2ps_prov_complete(
4036                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4037                                         dev, adv_mac, ses_mac,
4038                                         grp_mac, adv_id, ses_id, 0, 0,
4039                                         NULL, 0, 0, 0, NULL, NULL, 0, 0);
4040                                 return;
4041                         }
4042
4043                         /* If PD Resp complete, start up the GO */
4044                         if (response_done && persistent_go) {
4045                                 wpas_p2p_group_add_persistent(
4046                                         wpa_s, persistent_go,
4047                                         0, 0, freq, 0, 0, NULL,
4048                                         persistent_go->mode ==
4049                                         WPAS_MODE_P2P_GO ?
4050                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4051                                         0, 0);
4052                         } else if (response_done) {
4053                                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0);
4054                         }
4055
4056                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4057                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4058                                           ETH_ALEN);
4059                                 wpa_s->p2ps_method_config_any = 1;
4060                         }
4061                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4062                         os_memcpy(go_ifname, go_wpa_s->ifname,
4063                                   sizeof(go_ifname));
4064
4065                         if (is_zero_ether_addr(grp_mac)) {
4066                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4067                                         "P2P: Setting PIN-1 for ANY");
4068                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4069                                                           "12345670", NULL, 0,
4070                                                           0);
4071                         } else {
4072                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4073                                         "P2P: Setting PIN-1 for " MACSTR,
4074                                         MAC2STR(grp_mac));
4075                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4076                                                           "12345670", NULL, 0,
4077                                                           0);
4078                         }
4079
4080                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4081                         wpa_s->p2ps_method_config_any = 1;
4082                 }
4083
4084                 wpa_msg_global(wpa_s, MSG_INFO,
4085                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4086                                " status=%d conncap=%x"
4087                                " adv_id=%x adv_mac=" MACSTR
4088                                " session=%x mac=" MACSTR
4089                                " dev_passwd_id=%d go=%s%s",
4090                                MAC2STR(dev), status, conncap,
4091                                adv_id, MAC2STR(adv_mac),
4092                                ses_id, MAC2STR(ses_mac),
4093                                passwd_id, go_ifname, feat_cap_str);
4094                 return;
4095         }
4096
4097         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4098                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4099
4100         if (persistent_go && !persistent_go->num_p2p_clients) {
4101                 /* remove empty persistent GO */
4102                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4103         }
4104
4105         if (conncap == P2PS_SETUP_CLIENT) {
4106                 wpa_msg_global(wpa_s, MSG_INFO,
4107                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4108                                " status=%d conncap=%x"
4109                                " adv_id=%x adv_mac=" MACSTR
4110                                " session=%x mac=" MACSTR
4111                                " dev_passwd_id=%d join=" MACSTR "%s",
4112                                MAC2STR(dev), status, conncap,
4113                                adv_id, MAC2STR(adv_mac),
4114                                ses_id, MAC2STR(ses_mac),
4115                                passwd_id, MAC2STR(grp_mac), feat_cap_str);
4116         } else {
4117                 wpa_msg_global(wpa_s, MSG_INFO,
4118                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4119                                " status=%d conncap=%x"
4120                                " adv_id=%x adv_mac=" MACSTR
4121                                " session=%x mac=" MACSTR
4122                                " dev_passwd_id=%d%s",
4123                                MAC2STR(dev), status, conncap,
4124                                adv_id, MAC2STR(adv_mac),
4125                                ses_id, MAC2STR(ses_mac),
4126                                passwd_id, feat_cap_str);
4127         }
4128 }
4129
4130
4131 static int _wpas_p2p_in_progress(void *ctx)
4132 {
4133         struct wpa_supplicant *wpa_s = ctx;
4134         return wpas_p2p_in_progress(wpa_s);
4135 }
4136
4137
4138 static int wpas_prov_disc_resp_cb(void *ctx)
4139 {
4140         struct wpa_supplicant *wpa_s = ctx;
4141         struct wpa_ssid *persistent_go;
4142         unsigned int freq;
4143
4144         if (!wpa_s->global->pending_p2ps_group)
4145                 return 0;
4146
4147         freq = wpa_s->global->pending_p2ps_group_freq;
4148         wpa_s->global->pending_p2ps_group_freq = 0;
4149         wpa_s->global->pending_p2ps_group = 0;
4150
4151         if (wpas_p2p_get_go_group(wpa_s))
4152                 return 0;
4153         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4154
4155         if (persistent_go) {
4156                 wpas_p2p_group_add_persistent(
4157                         wpa_s, persistent_go, 0, 0, 0, 0, 0, NULL,
4158                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4159                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4160         } else {
4161                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0);
4162         }
4163
4164         return 1;
4165 }
4166
4167
4168 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4169                                        unsigned int *len,
4170                                        unsigned int *freq_list)
4171 {
4172         struct wpa_supplicant *wpa_s = ctx;
4173
4174         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4175                                           WPA_IF_P2P_CLIENT, len, freq_list);
4176 }
4177
4178
4179 /**
4180  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4181  * @global: Pointer to global data from wpa_supplicant_init()
4182  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4183  * Returns: 0 on success, -1 on failure
4184  */
4185 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4186 {
4187         struct p2p_config p2p;
4188         int i;
4189
4190         if (wpa_s->conf->p2p_disabled)
4191                 return 0;
4192
4193         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4194                 return 0;
4195
4196         if (global->p2p)
4197                 return 0;
4198
4199         os_memset(&p2p, 0, sizeof(p2p));
4200         p2p.cb_ctx = wpa_s;
4201         p2p.debug_print = wpas_p2p_debug_print;
4202         p2p.p2p_scan = wpas_p2p_scan;
4203         p2p.send_action = wpas_send_action;
4204         p2p.send_action_done = wpas_send_action_done;
4205         p2p.go_neg_completed = wpas_go_neg_completed;
4206         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4207         p2p.dev_found = wpas_dev_found;
4208         p2p.dev_lost = wpas_dev_lost;
4209         p2p.find_stopped = wpas_find_stopped;
4210         p2p.start_listen = wpas_start_listen;
4211         p2p.stop_listen = wpas_stop_listen;
4212         p2p.send_probe_resp = wpas_send_probe_resp;
4213         p2p.sd_request = wpas_sd_request;
4214         p2p.sd_response = wpas_sd_response;
4215         p2p.prov_disc_req = wpas_prov_disc_req;
4216         p2p.prov_disc_resp = wpas_prov_disc_resp;
4217         p2p.prov_disc_fail = wpas_prov_disc_fail;
4218         p2p.invitation_process = wpas_invitation_process;
4219         p2p.invitation_received = wpas_invitation_received;
4220         p2p.invitation_result = wpas_invitation_result;
4221         p2p.get_noa = wpas_get_noa;
4222         p2p.go_connected = wpas_go_connected;
4223         p2p.presence_resp = wpas_presence_resp;
4224         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4225         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4226         p2p.get_persistent_group = wpas_get_persistent_group;
4227         p2p.get_go_info = wpas_get_go_info;
4228         p2p.remove_stale_groups = wpas_remove_stale_groups;
4229         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4230         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4231         p2p.p2ps_group_capability = p2ps_group_capability;
4232         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4233
4234         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4235         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4236         p2p.dev_name = wpa_s->conf->device_name;
4237         p2p.manufacturer = wpa_s->conf->manufacturer;
4238         p2p.model_name = wpa_s->conf->model_name;
4239         p2p.model_number = wpa_s->conf->model_number;
4240         p2p.serial_number = wpa_s->conf->serial_number;
4241         if (wpa_s->wps) {
4242                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4243                 p2p.config_methods = wpa_s->wps->config_methods;
4244         }
4245
4246         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4247                 wpa_printf(MSG_ERROR,
4248                            "P2P: Failed to configure supported channel list");
4249                 return -1;
4250         }
4251
4252         if (wpa_s->conf->p2p_listen_reg_class &&
4253             wpa_s->conf->p2p_listen_channel) {
4254                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4255                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4256                 p2p.channel_forced = 1;
4257         } else {
4258                 /*
4259                  * Pick one of the social channels randomly as the listen
4260                  * channel.
4261                  */
4262                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4263                                                  &p2p.channel) != 0) {
4264                         wpa_printf(MSG_INFO,
4265                                    "P2P: No social channels supported by the driver - do not enable P2P");
4266                         return 0;
4267                 }
4268                 p2p.channel_forced = 0;
4269         }
4270         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4271                    p2p.reg_class, p2p.channel);
4272
4273         if (wpa_s->conf->p2p_oper_reg_class &&
4274             wpa_s->conf->p2p_oper_channel) {
4275                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4276                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4277                 p2p.cfg_op_channel = 1;
4278                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4279                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4280
4281         } else {
4282                 /*
4283                  * Use random operation channel from 2.4 GHz band social
4284                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4285                  * other preference is indicated.
4286                  */
4287                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4288                                                  &p2p.op_channel) != 0) {
4289                         wpa_printf(MSG_ERROR,
4290                                    "P2P: Failed to select random social channel as operation channel");
4291                         return -1;
4292                 }
4293                 p2p.cfg_op_channel = 0;
4294                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4295                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4296         }
4297
4298         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4299                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4300                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4301         }
4302
4303         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4304                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4305                 p2p.country[2] = 0x04;
4306         } else
4307                 os_memcpy(p2p.country, "XX\x04", 3);
4308
4309         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4310                   WPS_DEV_TYPE_LEN);
4311
4312         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4313         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4314                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4315
4316         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4317                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4318
4319         p2p.max_peers = 100;
4320
4321         if (wpa_s->conf->p2p_ssid_postfix) {
4322                 p2p.ssid_postfix_len =
4323                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4324                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4325                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4326                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4327                           p2p.ssid_postfix_len);
4328         }
4329
4330         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4331
4332         p2p.max_listen = wpa_s->max_remain_on_chan;
4333
4334         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4335             wpa_s->conf->p2p_passphrase_len <= 63)
4336                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4337         else
4338                 p2p.passphrase_len = 8;
4339
4340         global->p2p = p2p_init(&p2p);
4341         if (global->p2p == NULL)
4342                 return -1;
4343         global->p2p_init_wpa_s = wpa_s;
4344
4345         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4346                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4347                         continue;
4348                 p2p_add_wps_vendor_extension(
4349                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4350         }
4351
4352         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4353
4354         return 0;
4355 }
4356
4357
4358 /**
4359  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4360  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4361  *
4362  * This function deinitialize per-interface P2P data.
4363  */
4364 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4365 {
4366         if (wpa_s->driver && wpa_s->drv_priv)
4367                 wpa_drv_probe_req_report(wpa_s, 0);
4368
4369         if (wpa_s->go_params) {
4370                 /* Clear any stored provisioning info */
4371                 p2p_clear_provisioning_info(
4372                         wpa_s->global->p2p,
4373                         wpa_s->go_params->peer_device_addr);
4374         }
4375
4376         os_free(wpa_s->go_params);
4377         wpa_s->go_params = NULL;
4378         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4379         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4380         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4381         wpa_s->p2p_long_listen = 0;
4382         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4383         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4384         wpas_p2p_remove_pending_group_interface(wpa_s);
4385         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4386         wpas_p2p_listen_work_done(wpa_s);
4387         if (wpa_s->p2p_send_action_work) {
4388                 os_free(wpa_s->p2p_send_action_work->ctx);
4389                 radio_work_done(wpa_s->p2p_send_action_work);
4390                 wpa_s->p2p_send_action_work = NULL;
4391         }
4392         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4393
4394         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4395         wpa_s->p2p_oob_dev_pw = NULL;
4396
4397         os_free(wpa_s->p2p_group_common_freqs);
4398         wpa_s->p2p_group_common_freqs = NULL;
4399         wpa_s->p2p_group_common_freqs_num = 0;
4400
4401         /* TODO: remove group interface from the driver if this wpa_s instance
4402          * is on top of a P2P group interface */
4403 }
4404
4405
4406 /**
4407  * wpas_p2p_deinit_global - Deinitialize global P2P module
4408  * @global: Pointer to global data from wpa_supplicant_init()
4409  *
4410  * This function deinitializes the global (per device) P2P module.
4411  */
4412 static void wpas_p2p_deinit_global(struct wpa_global *global)
4413 {
4414         struct wpa_supplicant *wpa_s, *tmp;
4415
4416         wpa_s = global->ifaces;
4417
4418         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4419
4420         /* Remove remaining P2P group interfaces */
4421         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4422                 wpa_s = wpa_s->next;
4423         while (wpa_s) {
4424                 tmp = global->ifaces;
4425                 while (tmp &&
4426                        (tmp == wpa_s ||
4427                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4428                         tmp = tmp->next;
4429                 }
4430                 if (tmp == NULL)
4431                         break;
4432                 /* Disconnect from the P2P group and deinit the interface */
4433                 wpas_p2p_disconnect(tmp);
4434         }
4435
4436         /*
4437          * Deinit GO data on any possibly remaining interface (if main
4438          * interface is used as GO).
4439          */
4440         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4441                 if (wpa_s->ap_iface)
4442                         wpas_p2p_group_deinit(wpa_s);
4443         }
4444
4445         p2p_deinit(global->p2p);
4446         global->p2p = NULL;
4447         global->p2p_init_wpa_s = NULL;
4448 }
4449
4450
4451 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4452 {
4453         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4454             wpa_s->conf->p2p_no_group_iface)
4455                 return 0; /* separate interface disabled per configuration */
4456         if (wpa_s->drv_flags &
4457             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4458              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4459                 return 1; /* P2P group requires a new interface in every case
4460                            */
4461         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4462                 return 0; /* driver does not support concurrent operations */
4463         if (wpa_s->global->ifaces->next)
4464                 return 1; /* more that one interface already in use */
4465         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4466                 return 1; /* this interface is already in use */
4467         return 0;
4468 }
4469
4470
4471 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4472                                  const u8 *peer_addr,
4473                                  enum p2p_wps_method wps_method,
4474                                  int go_intent, const u8 *own_interface_addr,
4475                                  unsigned int force_freq, int persistent_group,
4476                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4477 {
4478         if (persistent_group && wpa_s->conf->persistent_reconnect)
4479                 persistent_group = 2;
4480
4481         /*
4482          * Increase GO config timeout if HT40 is used since it takes some time
4483          * to scan channels for coex purposes before the BSS can be started.
4484          */
4485         p2p_set_config_timeout(wpa_s->global->p2p,
4486                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4487
4488         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4489                            go_intent, own_interface_addr, force_freq,
4490                            persistent_group, ssid ? ssid->ssid : NULL,
4491                            ssid ? ssid->ssid_len : 0,
4492                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4493                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4494                            0);
4495 }
4496
4497
4498 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4499                                 const u8 *peer_addr,
4500                                 enum p2p_wps_method wps_method,
4501                                 int go_intent, const u8 *own_interface_addr,
4502                                 unsigned int force_freq, int persistent_group,
4503                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4504 {
4505         if (persistent_group && wpa_s->conf->persistent_reconnect)
4506                 persistent_group = 2;
4507
4508         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4509                              go_intent, own_interface_addr, force_freq,
4510                              persistent_group, ssid ? ssid->ssid : NULL,
4511                              ssid ? ssid->ssid_len : 0, pref_freq,
4512                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4513                              0);
4514 }
4515
4516
4517 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4518 {
4519         wpa_s->p2p_join_scan_count++;
4520         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4521                    wpa_s->p2p_join_scan_count);
4522         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4523                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4524                            " for join operationg - stop join attempt",
4525                            MAC2STR(wpa_s->pending_join_iface_addr));
4526                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4527                 if (wpa_s->p2p_auto_pd) {
4528                         wpa_s->p2p_auto_pd = 0;
4529                         wpa_msg_global(wpa_s, MSG_INFO,
4530                                        P2P_EVENT_PROV_DISC_FAILURE
4531                                        " p2p_dev_addr=" MACSTR " status=N/A",
4532                                        MAC2STR(wpa_s->pending_join_dev_addr));
4533                         return;
4534                 }
4535                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4536                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4537                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4538         }
4539 }
4540
4541
4542 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4543 {
4544         int res;
4545         unsigned int num, i;
4546         struct wpa_used_freq_data *freqs;
4547
4548         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4549                 /* Multiple channels are supported and not all are in use */
4550                 return 0;
4551         }
4552
4553         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4554                           sizeof(struct wpa_used_freq_data));
4555         if (!freqs)
4556                 return 1;
4557
4558         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4559                                         wpa_s->num_multichan_concurrent);
4560
4561         for (i = 0; i < num; i++) {
4562                 if (freqs[i].freq == freq) {
4563                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4564                                    freq);
4565                         res = 0;
4566                         goto exit_free;
4567                 }
4568         }
4569
4570         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4571         res = 1;
4572
4573 exit_free:
4574         os_free(freqs);
4575         return res;
4576 }
4577
4578
4579 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4580                             const u8 *peer_dev_addr)
4581 {
4582         struct wpa_bss *bss;
4583         int updated;
4584
4585         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4586         if (bss == NULL)
4587                 return -1;
4588         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4589                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4590                            "last scan");
4591                 return 0;
4592         }
4593
4594         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4595                                     &bss->last_update);
4596         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4597                    "%ld.%06ld (%supdated in last scan)",
4598                    bss->last_update.sec, bss->last_update.usec,
4599                    updated ? "": "not ");
4600
4601         return updated;
4602 }
4603
4604
4605 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4606                                    struct wpa_scan_results *scan_res)
4607 {
4608         struct wpa_bss *bss = NULL;
4609         int freq;
4610         u8 iface_addr[ETH_ALEN];
4611
4612         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4613
4614         if (wpa_s->global->p2p_disabled)
4615                 return;
4616
4617         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4618                    scan_res ? (int) scan_res->num : -1,
4619                    wpa_s->p2p_auto_join ? "auto_" : "");
4620
4621         if (scan_res)
4622                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4623
4624         if (wpa_s->p2p_auto_pd) {
4625                 int join = wpas_p2p_peer_go(wpa_s,
4626                                             wpa_s->pending_join_dev_addr);
4627                 if (join == 0 &&
4628                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4629                         wpa_s->auto_pd_scan_retry++;
4630                         bss = wpa_bss_get_bssid_latest(
4631                                 wpa_s, wpa_s->pending_join_dev_addr);
4632                         if (bss) {
4633                                 freq = bss->freq;
4634                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4635                                            "the peer " MACSTR " at %d MHz",
4636                                            wpa_s->auto_pd_scan_retry,
4637                                            MAC2STR(wpa_s->
4638                                                    pending_join_dev_addr),
4639                                            freq);
4640                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4641                                 return;
4642                         }
4643                 }
4644
4645                 if (join < 0)
4646                         join = 0;
4647
4648                 wpa_s->p2p_auto_pd = 0;
4649                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4650                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4651                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4652                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4653                                       wpa_s->pending_join_dev_addr, NULL,
4654                                       wpa_s->pending_pd_config_methods, join,
4655                                       0, wpa_s->user_initiated_pd) < 0) {
4656                         wpa_s->p2p_auto_pd = 0;
4657                         wpa_msg_global(wpa_s, MSG_INFO,
4658                                        P2P_EVENT_PROV_DISC_FAILURE
4659                                        " p2p_dev_addr=" MACSTR " status=N/A",
4660                                        MAC2STR(wpa_s->pending_join_dev_addr));
4661                 }
4662                 return;
4663         }
4664
4665         if (wpa_s->p2p_auto_join) {
4666                 int join = wpas_p2p_peer_go(wpa_s,
4667                                             wpa_s->pending_join_dev_addr);
4668                 if (join < 0) {
4669                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4670                                    "running a GO -> use GO Negotiation");
4671                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4672                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4673                                        "reason=peer-not-running-GO");
4674                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4675                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4676                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4677                                          wpa_s->p2p_go_intent,
4678                                          wpa_s->p2p_connect_freq,
4679                                          wpa_s->p2p_persistent_id,
4680                                          wpa_s->p2p_pd_before_go_neg,
4681                                          wpa_s->p2p_go_ht40,
4682                                          wpa_s->p2p_go_vht);
4683                         return;
4684                 }
4685
4686                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4687                            "try to join the group", join ? "" :
4688                            " in older scan");
4689                 if (!join) {
4690                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4691                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4692                         wpa_s->p2p_fallback_to_go_neg = 1;
4693                 }
4694         }
4695
4696         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4697                                  wpa_s->pending_join_iface_addr);
4698         if (freq < 0 &&
4699             p2p_get_interface_addr(wpa_s->global->p2p,
4700                                    wpa_s->pending_join_dev_addr,
4701                                    iface_addr) == 0 &&
4702             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4703             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4704                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4705                            "address for join from " MACSTR " to " MACSTR
4706                            " based on newly discovered P2P peer entry",
4707                            MAC2STR(wpa_s->pending_join_iface_addr),
4708                            MAC2STR(iface_addr));
4709                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4710                           ETH_ALEN);
4711
4712                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4713                                          wpa_s->pending_join_iface_addr);
4714         }
4715         if (freq >= 0) {
4716                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4717                            "from P2P peer table: %d MHz", freq);
4718         }
4719         if (wpa_s->p2p_join_ssid_len) {
4720                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4721                            MACSTR " and SSID %s",
4722                            MAC2STR(wpa_s->pending_join_iface_addr),
4723                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4724                                         wpa_s->p2p_join_ssid_len));
4725                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4726                                   wpa_s->p2p_join_ssid,
4727                                   wpa_s->p2p_join_ssid_len);
4728         }
4729         if (!bss) {
4730                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4731                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4732                 bss = wpa_bss_get_bssid_latest(wpa_s,
4733                                                wpa_s->pending_join_iface_addr);
4734         }
4735         if (bss) {
4736                 u8 dev_addr[ETH_ALEN];
4737
4738                 freq = bss->freq;
4739                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4740                            "from BSS table: %d MHz (SSID %s)", freq,
4741                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4742                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4743                                        dev_addr) == 0 &&
4744                     os_memcmp(wpa_s->pending_join_dev_addr,
4745                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4746                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4747                               ETH_ALEN) != 0) {
4748                         wpa_printf(MSG_DEBUG,
4749                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4750                                    MAC2STR(dev_addr),
4751                                    MAC2STR(wpa_s->pending_join_dev_addr));
4752                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4753                                   ETH_ALEN);
4754                 }
4755         }
4756         if (freq > 0) {
4757                 u16 method;
4758
4759                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4760                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4761                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4762                                        "reason=FREQ_CONFLICT");
4763                         wpas_notify_p2p_group_formation_failure(
4764                                 wpa_s, "FREQ_CONFLICT");
4765                         return;
4766                 }
4767
4768                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4769                            "prior to joining an existing group (GO " MACSTR
4770                            " freq=%u MHz)",
4771                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4772                 wpa_s->pending_pd_before_join = 1;
4773
4774                 switch (wpa_s->pending_join_wps_method) {
4775                 case WPS_PIN_DISPLAY:
4776                         method = WPS_CONFIG_KEYPAD;
4777                         break;
4778                 case WPS_PIN_KEYPAD:
4779                         method = WPS_CONFIG_DISPLAY;
4780                         break;
4781                 case WPS_PBC:
4782                         method = WPS_CONFIG_PUSHBUTTON;
4783                         break;
4784                 case WPS_P2PS:
4785                         method = WPS_CONFIG_P2PS;
4786                         break;
4787                 default:
4788                         method = 0;
4789                         break;
4790                 }
4791
4792                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4793                                                wpa_s->pending_join_dev_addr) ==
4794                      method)) {
4795                         /*
4796                          * We have already performed provision discovery for
4797                          * joining the group. Proceed directly to join
4798                          * operation without duplicated provision discovery. */
4799                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4800                                    "with " MACSTR " already done - proceed to "
4801                                    "join",
4802                                    MAC2STR(wpa_s->pending_join_dev_addr));
4803                         wpa_s->pending_pd_before_join = 0;
4804                         goto start;
4805                 }
4806
4807                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4808                                       wpa_s->pending_join_dev_addr,
4809                                       NULL, method, 1,
4810                                       freq, wpa_s->user_initiated_pd) < 0) {
4811                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4812                                    "Discovery Request before joining an "
4813                                    "existing group");
4814                         wpa_s->pending_pd_before_join = 0;
4815                         goto start;
4816                 }
4817                 return;
4818         }
4819
4820         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4821         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4822         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4823         wpas_p2p_check_join_scan_limit(wpa_s);
4824         return;
4825
4826 start:
4827         /* Start join operation immediately */
4828         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4829 }
4830
4831
4832 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4833                                    const u8 *ssid, size_t ssid_len)
4834 {
4835         int ret;
4836         struct wpa_driver_scan_params params;
4837         struct wpabuf *wps_ie, *ies;
4838         size_t ielen;
4839         int freqs[2] = { 0, 0 };
4840
4841         os_memset(&params, 0, sizeof(params));
4842
4843         /* P2P Wildcard SSID */
4844         params.num_ssids = 1;
4845         if (ssid && ssid_len) {
4846                 params.ssids[0].ssid = ssid;
4847                 params.ssids[0].ssid_len = ssid_len;
4848                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4849                 wpa_s->p2p_join_ssid_len = ssid_len;
4850         } else {
4851                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4852                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4853                 wpa_s->p2p_join_ssid_len = 0;
4854         }
4855
4856         wpa_s->wps->dev.p2p = 1;
4857         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4858                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4859                                         NULL);
4860         if (wps_ie == NULL) {
4861                 wpas_p2p_scan_res_join(wpa_s, NULL);
4862                 return;
4863         }
4864
4865         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4866         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4867         if (ies == NULL) {
4868                 wpabuf_free(wps_ie);
4869                 wpas_p2p_scan_res_join(wpa_s, NULL);
4870                 return;
4871         }
4872         wpabuf_put_buf(ies, wps_ie);
4873         wpabuf_free(wps_ie);
4874
4875         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4876
4877         params.p2p_probe = 1;
4878         params.extra_ies = wpabuf_head(ies);
4879         params.extra_ies_len = wpabuf_len(ies);
4880
4881         if (!freq) {
4882                 int oper_freq;
4883                 /*
4884                  * If freq is not provided, check the operating freq of the GO
4885                  * and use a single channel scan on if possible.
4886                  */
4887                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4888                                               wpa_s->pending_join_iface_addr);
4889                 if (oper_freq > 0)
4890                         freq = oper_freq;
4891         }
4892         if (freq > 0) {
4893                 freqs[0] = freq;
4894                 params.freqs = freqs;
4895         }
4896
4897         /*
4898          * Run a scan to update BSS table and start Provision Discovery once
4899          * the new scan results become available.
4900          */
4901         ret = wpa_drv_scan(wpa_s, &params);
4902         if (!ret) {
4903                 os_get_reltime(&wpa_s->scan_trigger_time);
4904                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4905                 wpa_s->own_scan_requested = 1;
4906         }
4907
4908         wpabuf_free(ies);
4909
4910         if (ret) {
4911                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4912                            "try again later");
4913                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4914                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4915                 wpas_p2p_check_join_scan_limit(wpa_s);
4916         }
4917 }
4918
4919
4920 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4921 {
4922         struct wpa_supplicant *wpa_s = eloop_ctx;
4923         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4924 }
4925
4926
4927 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4928                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4929                          int auto_join, int op_freq,
4930                          const u8 *ssid, size_t ssid_len)
4931 {
4932         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4933                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4934                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4935                    auto_join ? " (auto_join)" : "");
4936         if (ssid && ssid_len) {
4937                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4938                            wpa_ssid_txt(ssid, ssid_len));
4939         }
4940
4941         wpa_s->p2p_auto_pd = 0;
4942         wpa_s->p2p_auto_join = !!auto_join;
4943         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4944         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4945         wpa_s->pending_join_wps_method = wps_method;
4946
4947         /* Make sure we are not running find during connection establishment */
4948         wpas_p2p_stop_find(wpa_s);
4949
4950         wpa_s->p2p_join_scan_count = 0;
4951         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4952         return 0;
4953 }
4954
4955
4956 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4957                                const u8 *ssid, size_t ssid_len)
4958 {
4959         struct wpa_supplicant *group;
4960         struct p2p_go_neg_results res;
4961         struct wpa_bss *bss;
4962
4963         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4964         if (group == NULL)
4965                 return -1;
4966         if (group != wpa_s) {
4967                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4968                           sizeof(group->p2p_pin));
4969                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4970         } else {
4971                 /*
4972                  * Need to mark the current interface for p2p_group_formation
4973                  * when a separate group interface is not used. This is needed
4974                  * to allow p2p_cancel stop a pending p2p_connect-join.
4975                  * wpas_p2p_init_group_interface() addresses this for the case
4976                  * where a separate group interface is used.
4977                  */
4978                 wpa_s->global->p2p_group_formation = wpa_s;
4979         }
4980
4981         group->p2p_in_provisioning = 1;
4982         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4983
4984         os_memset(&res, 0, sizeof(res));
4985         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4986         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4987                   ETH_ALEN);
4988         res.wps_method = wpa_s->pending_join_wps_method;
4989         if (freq && ssid && ssid_len) {
4990                 res.freq = freq;
4991                 res.ssid_len = ssid_len;
4992                 os_memcpy(res.ssid, ssid, ssid_len);
4993         } else {
4994                 bss = wpa_bss_get_bssid_latest(wpa_s,
4995                                                wpa_s->pending_join_iface_addr);
4996                 if (bss) {
4997                         res.freq = bss->freq;
4998                         res.ssid_len = bss->ssid_len;
4999                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5000                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5001                                    bss->freq,
5002                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
5003                 }
5004         }
5005
5006         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5007                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5008                            "starting client");
5009                 wpa_drv_cancel_remain_on_channel(wpa_s);
5010                 wpa_s->off_channel_freq = 0;
5011                 wpa_s->roc_waiting_drv_freq = 0;
5012         }
5013         wpas_start_wps_enrollee(group, &res);
5014
5015         /*
5016          * Allow a longer timeout for join-a-running-group than normal 15
5017          * second group formation timeout since the GO may not have authorized
5018          * our connection yet.
5019          */
5020         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5021         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5022                                wpa_s, NULL);
5023
5024         return 0;
5025 }
5026
5027
5028 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5029                                 int *force_freq, int *pref_freq, int go,
5030                                 unsigned int *pref_freq_list,
5031                                 unsigned int *num_pref_freq)
5032 {
5033         struct wpa_used_freq_data *freqs;
5034         int res, best_freq, num_unused;
5035         unsigned int freq_in_use = 0, num, i, max_pref_freq;
5036
5037         max_pref_freq = *num_pref_freq;
5038         *num_pref_freq = 0;
5039
5040         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5041                           sizeof(struct wpa_used_freq_data));
5042         if (!freqs)
5043                 return -1;
5044
5045         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5046                                         wpa_s->num_multichan_concurrent);
5047
5048         /*
5049          * It is possible that the total number of used frequencies is bigger
5050          * than the number of frequencies used for P2P, so get the system wide
5051          * number of unused frequencies.
5052          */
5053         num_unused = wpas_p2p_num_unused_channels(wpa_s);
5054
5055         wpa_printf(MSG_DEBUG,
5056                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5057                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
5058
5059         if (freq > 0) {
5060                 int ret;
5061                 if (go)
5062                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5063                 else
5064                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5065                 if (!ret) {
5066                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5067                             ieee80211_is_dfs(freq)) {
5068                                 /*
5069                                  * If freq is a DFS channel and DFS is offloaded
5070                                  * to the driver, allow P2P GO to use it.
5071                                  */
5072                                 wpa_printf(MSG_DEBUG,
5073                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5074                                            freq);
5075                         } else {
5076                                 wpa_printf(MSG_DEBUG,
5077                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5078                                            freq);
5079                                 res = -3;
5080                                 goto exit_free;
5081                         }
5082                 }
5083
5084                 for (i = 0; i < num; i++) {
5085                         if (freqs[i].freq == freq)
5086                                 freq_in_use = 1;
5087                 }
5088
5089                 if (num_unused <= 0 && !freq_in_use) {
5090                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5091                                    freq);
5092                         res = -2;
5093                         goto exit_free;
5094                 }
5095                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5096                            "requested channel (%u MHz)", freq);
5097                 *force_freq = freq;
5098                 goto exit_ok;
5099         }
5100
5101         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5102
5103         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5104                 enum wpa_driver_if_type iface_type;
5105
5106                 if (go)
5107                         iface_type = WPA_IF_P2P_GO;
5108                 else
5109                         iface_type = WPA_IF_P2P_CLIENT;
5110
5111                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5112                            best_freq, go);
5113
5114                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5115                                                  &max_pref_freq,
5116                                                  pref_freq_list);
5117                 if (!res && max_pref_freq > 0) {
5118                         *num_pref_freq = max_pref_freq;
5119                         i = 0;
5120                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5121                                                         pref_freq_list[i]) &&
5122                                i < *num_pref_freq) {
5123                                 wpa_printf(MSG_DEBUG,
5124                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5125                                            i, pref_freq_list[i]);
5126                                 i++;
5127                         }
5128                         if (i != *num_pref_freq) {
5129                                 best_freq = pref_freq_list[i];
5130                                 wpa_printf(MSG_DEBUG,
5131                                            "P2P: Using preferred_freq_list[%d]=%d",
5132                                            i, best_freq);
5133                         } else {
5134                                 wpa_printf(MSG_DEBUG,
5135                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5136                                 *num_pref_freq = 0;
5137                         }
5138                 } else {
5139                         wpa_printf(MSG_DEBUG,
5140                                    "P2P: No preferred frequency list available");
5141                 }
5142         }
5143
5144         /* We have a candidate frequency to use */
5145         if (best_freq > 0) {
5146                 if (*pref_freq == 0 && num_unused > 0) {
5147                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5148                                    best_freq);
5149                         *pref_freq = best_freq;
5150                 } else {
5151                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5152                                    best_freq);
5153                         *force_freq = best_freq;
5154                 }
5155         } else if (num_unused > 0) {
5156                 wpa_printf(MSG_DEBUG,
5157                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5158                 *force_freq = 0;
5159         } else {
5160                 wpa_printf(MSG_DEBUG,
5161                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5162                 res = -2;
5163                 goto exit_free;
5164         }
5165
5166 exit_ok:
5167         res = 0;
5168 exit_free:
5169         os_free(freqs);
5170         return res;
5171 }
5172
5173
5174 /**
5175  * wpas_p2p_connect - Request P2P Group Formation to be started
5176  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5177  * @peer_addr: Address of the peer P2P Device
5178  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5179  * @persistent_group: Whether to create a persistent group
5180  * @auto_join: Whether to select join vs. GO Negotiation automatically
5181  * @join: Whether to join an existing group (as a client) instead of starting
5182  *      Group Owner negotiation; @peer_addr is BSSID in that case
5183  * @auth: Whether to only authorize the connection instead of doing that and
5184  *      initiating Group Owner negotiation
5185  * @go_intent: GO Intent or -1 to use default
5186  * @freq: Frequency for the group or 0 for auto-selection
5187  * @persistent_id: Persistent group credentials to use for forcing GO
5188  *      parameters or -1 to generate new values (SSID/passphrase)
5189  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5190  *      interoperability workaround when initiating group formation
5191  * @ht40: Start GO with 40 MHz channel width
5192  * @vht:  Start GO with VHT support
5193  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5194  *      failure, -2 on failure due to channel not currently available,
5195  *      -3 if forced channel is not supported
5196  */
5197 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5198                      const char *pin, enum p2p_wps_method wps_method,
5199                      int persistent_group, int auto_join, int join, int auth,
5200                      int go_intent, int freq, int persistent_id, int pd,
5201                      int ht40, int vht)
5202 {
5203         int force_freq = 0, pref_freq = 0;
5204         int ret = 0, res;
5205         enum wpa_driver_if_type iftype;
5206         const u8 *if_addr;
5207         struct wpa_ssid *ssid = NULL;
5208         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5209
5210         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5211                 return -1;
5212
5213         if (persistent_id >= 0) {
5214                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5215                 if (ssid == NULL || ssid->disabled != 2 ||
5216                     ssid->mode != WPAS_MODE_P2P_GO)
5217                         return -1;
5218         }
5219
5220         os_free(wpa_s->global->add_psk);
5221         wpa_s->global->add_psk = NULL;
5222
5223         wpa_s->global->p2p_fail_on_wps_complete = 0;
5224         wpa_s->global->pending_p2ps_group = 0;
5225         wpa_s->global->pending_p2ps_group_freq = 0;
5226         wpa_s->p2ps_method_config_any = 0;
5227
5228         if (go_intent < 0)
5229                 go_intent = wpa_s->conf->p2p_go_intent;
5230
5231         if (!auth)
5232                 wpa_s->p2p_long_listen = 0;
5233
5234         wpa_s->p2p_wps_method = wps_method;
5235         wpa_s->p2p_persistent_group = !!persistent_group;
5236         wpa_s->p2p_persistent_id = persistent_id;
5237         wpa_s->p2p_go_intent = go_intent;
5238         wpa_s->p2p_connect_freq = freq;
5239         wpa_s->p2p_fallback_to_go_neg = 0;
5240         wpa_s->p2p_pd_before_go_neg = !!pd;
5241         wpa_s->p2p_go_ht40 = !!ht40;
5242         wpa_s->p2p_go_vht = !!vht;
5243
5244         if (pin)
5245                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5246         else if (wps_method == WPS_PIN_DISPLAY) {
5247                 ret = wps_generate_pin();
5248                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5249                                   "%08d", ret);
5250                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5251                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5252                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5253                            wpa_s->p2p_pin);
5254         } else
5255                 wpa_s->p2p_pin[0] = '\0';
5256
5257         if (join || auto_join) {
5258                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5259                 if (auth) {
5260                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5261                                    "connect a running group from " MACSTR,
5262                                    MAC2STR(peer_addr));
5263                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5264                         return ret;
5265                 }
5266                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5267                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5268                                            iface_addr) < 0) {
5269                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5270                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5271                                          dev_addr);
5272                 }
5273                 if (auto_join) {
5274                         os_get_reltime(&wpa_s->p2p_auto_started);
5275                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5276                                    "%ld.%06ld",
5277                                    wpa_s->p2p_auto_started.sec,
5278                                    wpa_s->p2p_auto_started.usec);
5279                 }
5280                 wpa_s->user_initiated_pd = 1;
5281                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5282                                   auto_join, freq, NULL, 0) < 0)
5283                         return -1;
5284                 return ret;
5285         }
5286
5287         size = P2P_MAX_PREF_CHANNELS;
5288         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5289                                    go_intent == 15, pref_freq_list, &size);
5290         if (res)
5291                 return res;
5292         wpas_p2p_set_own_freq_preference(wpa_s,
5293                                          force_freq ? force_freq : pref_freq);
5294
5295         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5296
5297         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5298
5299         if (wpa_s->create_p2p_iface) {
5300                 /* Prepare to add a new interface for the group */
5301                 iftype = WPA_IF_P2P_GROUP;
5302                 if (go_intent == 15)
5303                         iftype = WPA_IF_P2P_GO;
5304                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5305                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5306                                    "interface for the group");
5307                         return -1;
5308                 }
5309
5310                 if_addr = wpa_s->pending_interface_addr;
5311         } else {
5312                 if_addr = wpa_s->own_addr;
5313                 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5314         }
5315
5316         if (auth) {
5317                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5318                                          go_intent, if_addr,
5319                                          force_freq, persistent_group, ssid,
5320                                          pref_freq) < 0)
5321                         return -1;
5322                 return ret;
5323         }
5324
5325         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5326                                   go_intent, if_addr, force_freq,
5327                                   persistent_group, ssid, pref_freq) < 0) {
5328                 if (wpa_s->create_p2p_iface)
5329                         wpas_p2p_remove_pending_group_interface(wpa_s);
5330                 return -1;
5331         }
5332         return ret;
5333 }
5334
5335
5336 /**
5337  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5338  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5339  * @freq: Frequency of the channel in MHz
5340  * @duration: Duration of the stay on the channel in milliseconds
5341  *
5342  * This callback is called when the driver indicates that it has started the
5343  * requested remain-on-channel duration.
5344  */
5345 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5346                                    unsigned int freq, unsigned int duration)
5347 {
5348         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5349                 return;
5350         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)",
5351                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5352                    wpa_s->roc_waiting_drv_freq, freq, duration);
5353         if (wpa_s->off_channel_freq &&
5354             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5355                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5356                               wpa_s->pending_listen_duration);
5357                 wpa_s->pending_listen_freq = 0;
5358         } else {
5359                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5360                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5361                            freq, duration);
5362         }
5363 }
5364
5365
5366 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5367 {
5368         /* Limit maximum Listen state time based on driver limitation. */
5369         if (timeout > wpa_s->max_remain_on_chan)
5370                 timeout = wpa_s->max_remain_on_chan;
5371
5372         return p2p_listen(wpa_s->global->p2p, timeout);
5373 }
5374
5375
5376 /**
5377  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5378  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5379  * @freq: Frequency of the channel in MHz
5380  *
5381  * This callback is called when the driver indicates that a remain-on-channel
5382  * operation has been completed, i.e., the duration on the requested channel
5383  * has timed out.
5384  */
5385 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5386                                           unsigned int freq)
5387 {
5388         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5389                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5390                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5391         wpas_p2p_listen_work_done(wpa_s);
5392         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5393                 return;
5394         if (wpa_s->p2p_long_listen > 0)
5395                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5396         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5397                 return; /* P2P module started a new operation */
5398         if (offchannel_pending_action_tx(wpa_s))
5399                 return;
5400         if (wpa_s->p2p_long_listen > 0) {
5401                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5402                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5403         } else {
5404                 /*
5405                  * When listen duration is over, stop listen & update p2p_state
5406                  * to IDLE.
5407                  */
5408                 p2p_stop_listen(wpa_s->global->p2p);
5409         }
5410 }
5411
5412
5413 /**
5414  * wpas_p2p_group_remove - Remove a P2P group
5415  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5416  * @ifname: Network interface name of the group interface or "*" to remove all
5417  *      groups
5418  * Returns: 0 on success, -1 on failure
5419  *
5420  * This function is used to remove a P2P group. This can be used to disconnect
5421  * from a group in which the local end is a P2P Client or to end a P2P Group in
5422  * case the local end is the Group Owner. If a virtual network interface was
5423  * created for this group, that interface will be removed. Otherwise, only the
5424  * configured P2P group network will be removed from the interface.
5425  */
5426 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5427 {
5428         struct wpa_global *global = wpa_s->global;
5429         struct wpa_supplicant *calling_wpa_s = wpa_s;
5430
5431         if (os_strcmp(ifname, "*") == 0) {
5432                 struct wpa_supplicant *prev;
5433                 wpa_s = global->ifaces;
5434                 while (wpa_s) {
5435                         prev = wpa_s;
5436                         wpa_s = wpa_s->next;
5437                         if (prev->p2p_group_interface !=
5438                             NOT_P2P_GROUP_INTERFACE ||
5439                             (prev->current_ssid &&
5440                              prev->current_ssid->p2p_group))
5441                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5442                 }
5443                 return 0;
5444         }
5445
5446         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5447                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5448                         break;
5449         }
5450
5451         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5452 }
5453
5454
5455 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5456 {
5457         unsigned int r;
5458
5459         if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5460                 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5461                 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5462                 int res;
5463
5464                 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5465                                                  &size, pref_freq_list);
5466                 if (!res && size > 0) {
5467                         i = 0;
5468                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5469                                                         pref_freq_list[i]) &&
5470                                i < size) {
5471                                 wpa_printf(MSG_DEBUG,
5472                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5473                                            i, pref_freq_list[i]);
5474                                 i++;
5475                         }
5476                         if (i != size) {
5477                                 freq = pref_freq_list[i];
5478                                 wpa_printf(MSG_DEBUG,
5479                                            "P2P: Using preferred_freq_list[%d]=%d",
5480                                            i, freq);
5481                         } else {
5482                                 wpa_printf(MSG_DEBUG,
5483                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5484                         }
5485                 } else {
5486                         wpa_printf(MSG_DEBUG,
5487                                    "P2P: No preferred frequency list available");
5488                 }
5489         }
5490
5491         if (freq == 2) {
5492                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5493                            "band");
5494                 if (wpa_s->best_24_freq > 0 &&
5495                     p2p_supported_freq_go(wpa_s->global->p2p,
5496                                           wpa_s->best_24_freq)) {
5497                         freq = wpa_s->best_24_freq;
5498                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5499                                    "channel: %d MHz", freq);
5500                 } else {
5501                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5502                                 return -1;
5503                         freq = 2412 + (r % 3) * 25;
5504                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5505                                    "channel: %d MHz", freq);
5506                 }
5507         }
5508
5509         if (freq == 5) {
5510                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5511                            "band");
5512                 if (wpa_s->best_5_freq > 0 &&
5513                     p2p_supported_freq_go(wpa_s->global->p2p,
5514                                        wpa_s->best_5_freq)) {
5515                         freq = wpa_s->best_5_freq;
5516                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5517                                    "channel: %d MHz", freq);
5518                 } else {
5519                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5520                                 return -1;
5521                         freq = 5180 + (r % 4) * 20;
5522                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5523                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5524                                            "5 GHz channel for P2P group");
5525                                 return -1;
5526                         }
5527                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5528                                    "channel: %d MHz", freq);
5529                 }
5530         }
5531
5532         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5533                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5534                     ieee80211_is_dfs(freq)) {
5535                         /*
5536                          * If freq is a DFS channel and DFS is offloaded to the
5537                          * driver, allow P2P GO to use it.
5538                          */
5539                         wpa_printf(MSG_DEBUG, "P2P: "
5540                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5541                                    __func__, freq);
5542                         return freq;
5543                 }
5544                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5545                            "(%u MHz) is not supported for P2P uses",
5546                            freq);
5547                 return -1;
5548         }
5549
5550         return freq;
5551 }
5552
5553
5554 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5555                                       const struct p2p_channels *channels,
5556                                       int freq)
5557 {
5558         if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5559             p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5560             freq_included(wpa_s, channels, freq))
5561                 return 1;
5562         return 0;
5563 }
5564
5565
5566 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5567                                             struct p2p_go_neg_results *params,
5568                                             const struct p2p_channels *channels)
5569 {
5570         unsigned int i, r;
5571
5572         /* first try some random selection of the social channels */
5573         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5574                 return;
5575
5576         for (i = 0; i < 3; i++) {
5577                 params->freq = 2412 + ((r + i) % 3) * 25;
5578                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5579                         goto out;
5580         }
5581
5582         /* try all other channels in operating class 81 */
5583         for (i = 0; i < 11; i++) {
5584                 params->freq = 2412 + i * 5;
5585
5586                 /* skip social channels; covered in the previous loop */
5587                 if (params->freq == 2412 ||
5588                     params->freq == 2437 ||
5589                     params->freq == 2462)
5590                         continue;
5591
5592                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5593                         goto out;
5594         }
5595
5596         /* try all channels in operating class 115 */
5597         for (i = 0; i < 4; i++) {
5598                 params->freq = 5180 + i * 20;
5599                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5600                     freq_included(wpa_s, channels, params->freq) &&
5601                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5602                         goto out;
5603         }
5604
5605         /* try all channels in operating class 124 */
5606         for (i = 0; i < 4; i++) {
5607                 params->freq = 5745 + i * 20;
5608                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5609                     freq_included(wpa_s, channels, params->freq) &&
5610                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5611                         goto out;
5612         }
5613
5614         /* try social channel class 180 channel 2 */
5615         params->freq = 58320 + 1 * 2160;
5616         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5617             freq_included(wpa_s, channels, params->freq) &&
5618             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5619                 goto out;
5620
5621         /* try all channels in reg. class 180 */
5622         for (i = 0; i < 4; i++) {
5623                 params->freq = 58320 + i * 2160;
5624                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5625                     freq_included(wpa_s, channels, params->freq) &&
5626                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5627                         goto out;
5628         }
5629
5630         params->freq = 0;
5631         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5632         return;
5633 out:
5634         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5635                    params->freq);
5636 }
5637
5638
5639 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5640                                    struct p2p_go_neg_results *params,
5641                                    int freq, int ht40, int vht,
5642                                    const struct p2p_channels *channels)
5643 {
5644         struct wpa_used_freq_data *freqs;
5645         unsigned int cand;
5646         unsigned int num, i;
5647         int ignore_no_freqs = 0;
5648
5649         os_memset(params, 0, sizeof(*params));
5650         params->role_go = 1;
5651         params->ht40 = ht40;
5652         params->vht = vht;
5653
5654         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5655                           sizeof(struct wpa_used_freq_data));
5656         if (!freqs)
5657                 return -1;
5658
5659         num = get_shared_radio_freqs_data(wpa_s, freqs,
5660                                           wpa_s->num_multichan_concurrent);
5661
5662         if (wpa_s->current_ssid &&
5663             wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5664             wpa_s->wpa_state == WPA_COMPLETED) {
5665                 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5666                            __func__);
5667
5668                 /*
5669                  * If the frequency selection is done for an active P2P GO that
5670                  * is not sharing a frequency, allow to select a new frequency
5671                  * even if there are no unused frequencies as we are about to
5672                  * move the P2P GO so its frequency can be re-used.
5673                  */
5674                 for (i = 0; i < num; i++) {
5675                         if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5676                             freqs[i].flags == 0) {
5677                                 ignore_no_freqs = 1;
5678                                 break;
5679                         }
5680                 }
5681         }
5682
5683         /* try using the forced freq */
5684         if (freq) {
5685                 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) {
5686                         wpa_printf(MSG_DEBUG,
5687                                    "P2P: Forced GO freq %d MHz not accepted",
5688                                    freq);
5689                         goto fail;
5690                 }
5691
5692                 for (i = 0; i < num; i++) {
5693                         if (freqs[i].freq == freq) {
5694                                 wpa_printf(MSG_DEBUG,
5695                                            "P2P: forced freq (%d MHz) is also shared",
5696                                            freq);
5697                                 params->freq = freq;
5698                                 goto success;
5699                         }
5700                 }
5701
5702                 if (!ignore_no_freqs &&
5703                     wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5704                         wpa_printf(MSG_DEBUG,
5705                                    "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5706                                    freq);
5707                         goto fail;
5708                 }
5709
5710                 wpa_printf(MSG_DEBUG,
5711                            "P2P: force GO freq (%d MHz) on a free channel",
5712                            freq);
5713                 params->freq = freq;
5714                 goto success;
5715         }
5716
5717         /* consider using one of the shared frequencies */
5718         if (num) {
5719                 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5720                 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5721                         wpa_printf(MSG_DEBUG,
5722                                    "P2P: Use shared freq (%d MHz) for GO",
5723                                    freq);
5724                         params->freq = cand;
5725                         goto success;
5726                 }
5727
5728                 /* try using one of the shared freqs */
5729                 for (i = 0; i < num; i++) {
5730                         if (wpas_p2p_supported_freq_go(wpa_s, channels,
5731                                                        freqs[i].freq)) {
5732                                 wpa_printf(MSG_DEBUG,
5733                                            "P2P: Use shared freq (%d MHz) for GO",
5734                                            freq);
5735                                 params->freq = freqs[i].freq;
5736                                 goto success;
5737                         }
5738                 }
5739         }
5740
5741         if (!ignore_no_freqs &&
5742             wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5743                 wpa_printf(MSG_DEBUG,
5744                            "P2P: Cannot force GO on any of the channels we are already using");
5745                 goto fail;
5746         }
5747
5748         /* try using the setting from the configuration file */
5749         if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5750             wpa_s->conf->p2p_oper_channel >= 1 &&
5751             wpa_s->conf->p2p_oper_channel <= 11 &&
5752             wpas_p2p_supported_freq_go(
5753                     wpa_s, channels,
5754                     2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5755                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5756                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5757                            "frequency %d MHz", params->freq);
5758                 goto success;
5759         }
5760
5761         if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5762              wpa_s->conf->p2p_oper_reg_class == 116 ||
5763              wpa_s->conf->p2p_oper_reg_class == 117 ||
5764              wpa_s->conf->p2p_oper_reg_class == 124 ||
5765              wpa_s->conf->p2p_oper_reg_class == 125 ||
5766              wpa_s->conf->p2p_oper_reg_class == 126 ||
5767              wpa_s->conf->p2p_oper_reg_class == 127) &&
5768             wpas_p2p_supported_freq_go(wpa_s, channels,
5769                                        5000 +
5770                                        5 * wpa_s->conf->p2p_oper_channel)) {
5771                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5772                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5773                            "frequency %d MHz", params->freq);
5774                 goto success;
5775         }
5776
5777         /* Try using best channels */
5778         if (wpa_s->conf->p2p_oper_channel == 0 &&
5779             wpa_s->best_overall_freq > 0 &&
5780             wpas_p2p_supported_freq_go(wpa_s, channels,
5781                                        wpa_s->best_overall_freq)) {
5782                 params->freq = wpa_s->best_overall_freq;
5783                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5784                            "channel %d MHz", params->freq);
5785                 goto success;
5786         }
5787
5788         if (wpa_s->conf->p2p_oper_channel == 0 &&
5789             wpa_s->best_24_freq > 0 &&
5790             wpas_p2p_supported_freq_go(wpa_s, channels,
5791                                        wpa_s->best_24_freq)) {
5792                 params->freq = wpa_s->best_24_freq;
5793                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5794                            "channel %d MHz", params->freq);
5795                 goto success;
5796         }
5797
5798         if (wpa_s->conf->p2p_oper_channel == 0 &&
5799             wpa_s->best_5_freq > 0 &&
5800             wpas_p2p_supported_freq_go(wpa_s, channels,
5801                                        wpa_s->best_5_freq)) {
5802                 params->freq = wpa_s->best_5_freq;
5803                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5804                            "channel %d MHz", params->freq);
5805                 goto success;
5806         }
5807
5808         /* try using preferred channels */
5809         cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
5810         if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5811                 params->freq = cand;
5812                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5813                            "channels", params->freq);
5814                 goto success;
5815         }
5816
5817         /* Try using one of the group common freqs */
5818         if (wpa_s->p2p_group_common_freqs) {
5819                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
5820                         cand = wpa_s->p2p_group_common_freqs[i];
5821                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5822                                 params->freq = cand;
5823                                 wpa_printf(MSG_DEBUG,
5824                                            "P2P: Use freq %d MHz common with the peer",
5825                                            params->freq);
5826                                 goto success;
5827                         }
5828                 }
5829         }
5830
5831         /* no preference, select some channel */
5832         wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
5833
5834         if (params->freq == 0) {
5835                 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
5836                 goto fail;
5837         }
5838
5839 success:
5840         os_free(freqs);
5841         return 0;
5842 fail:
5843         os_free(freqs);
5844         return -1;
5845 }
5846
5847
5848 static struct wpa_supplicant *
5849 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5850                          int go)
5851 {
5852         struct wpa_supplicant *group_wpa_s;
5853
5854         if (!wpas_p2p_create_iface(wpa_s)) {
5855                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5856                         "operations");
5857                 wpa_s->p2p_first_connection_timeout = 0;
5858                 return wpa_s;
5859         }
5860
5861         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5862                                          WPA_IF_P2P_CLIENT) < 0) {
5863                 wpa_msg_global(wpa_s, MSG_ERROR,
5864                                "P2P: Failed to add group interface");
5865                 return NULL;
5866         }
5867         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5868         if (group_wpa_s == NULL) {
5869                 wpa_msg_global(wpa_s, MSG_ERROR,
5870                                "P2P: Failed to initialize group interface");
5871                 wpas_p2p_remove_pending_group_interface(wpa_s);
5872                 return NULL;
5873         }
5874
5875         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5876                 group_wpa_s->ifname);
5877         group_wpa_s->p2p_first_connection_timeout = 0;
5878         return group_wpa_s;
5879 }
5880
5881
5882 /**
5883  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5884  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5885  * @persistent_group: Whether to create a persistent group
5886  * @freq: Frequency for the group or 0 to indicate no hardcoding
5887  * @ht40: Start GO with 40 MHz channel width
5888  * @vht:  Start GO with VHT support
5889  * Returns: 0 on success, -1 on failure
5890  *
5891  * This function creates a new P2P group with the local end as the Group Owner,
5892  * i.e., without using Group Owner Negotiation.
5893  */
5894 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5895                        int freq, int ht40, int vht)
5896 {
5897         struct p2p_go_neg_results params;
5898
5899         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5900                 return -1;
5901
5902         os_free(wpa_s->global->add_psk);
5903         wpa_s->global->add_psk = NULL;
5904
5905         /* Make sure we are not running find during connection establishment */
5906         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5907         wpas_p2p_stop_find_oper(wpa_s);
5908
5909         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5910         if (freq < 0)
5911                 return -1;
5912
5913         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5914                 return -1;
5915         if (params.freq &&
5916             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5917                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5918                     ieee80211_is_dfs(params.freq)) {
5919                         /*
5920                          * If freq is a DFS channel and DFS is offloaded to the
5921                          * driver, allow P2P GO to use it.
5922                          */
5923                         wpa_printf(MSG_DEBUG,
5924                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
5925                                 __func__, params.freq);
5926                 } else {
5927                         wpa_printf(MSG_DEBUG,
5928                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
5929                                    params.freq);
5930                         return -1;
5931                 }
5932         }
5933         p2p_go_params(wpa_s->global->p2p, &params);
5934         params.persistent_group = persistent_group;
5935
5936         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5937         if (wpa_s == NULL)
5938                 return -1;
5939         wpas_start_wps_go(wpa_s, &params, 0);
5940
5941         return 0;
5942 }
5943
5944
5945 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5946                                  struct wpa_ssid *params, int addr_allocated,
5947                                  int freq, int force_scan)
5948 {
5949         struct wpa_ssid *ssid;
5950
5951         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5952         if (wpa_s == NULL)
5953                 return -1;
5954         if (force_scan)
5955                 os_get_reltime(&wpa_s->scan_min_time);
5956         wpa_s->p2p_last_4way_hs_fail = NULL;
5957
5958         wpa_supplicant_ap_deinit(wpa_s);
5959
5960         ssid = wpa_config_add_network(wpa_s->conf);
5961         if (ssid == NULL)
5962                 return -1;
5963         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5964         wpa_config_set_network_defaults(ssid);
5965         ssid->temporary = 1;
5966         ssid->proto = WPA_PROTO_RSN;
5967         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5968         ssid->group_cipher = WPA_CIPHER_CCMP;
5969         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5970         ssid->ssid = os_malloc(params->ssid_len);
5971         if (ssid->ssid == NULL) {
5972                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5973                 return -1;
5974         }
5975         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5976         ssid->ssid_len = params->ssid_len;
5977         ssid->p2p_group = 1;
5978         ssid->export_keys = 1;
5979         if (params->psk_set) {
5980                 os_memcpy(ssid->psk, params->psk, 32);
5981                 ssid->psk_set = 1;
5982         }
5983         if (params->passphrase)
5984                 ssid->passphrase = os_strdup(params->passphrase);
5985
5986         wpa_s->show_group_started = 1;
5987         wpa_s->p2p_in_invitation = 1;
5988         wpa_s->p2p_invite_go_freq = freq;
5989
5990         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5991                              NULL);
5992         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5993                                wpas_p2p_group_formation_timeout,
5994                                wpa_s->parent, NULL);
5995         wpa_supplicant_select_network(wpa_s, ssid);
5996
5997         return 0;
5998 }
5999
6000
6001 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6002                                   struct wpa_ssid *ssid, int addr_allocated,
6003                                   int force_freq, int neg_freq, int ht40,
6004                                   int vht, const struct p2p_channels *channels,
6005                                   int connection_timeout, int force_scan)
6006 {
6007         struct p2p_go_neg_results params;
6008         int go = 0, freq;
6009
6010         if (ssid->disabled != 2 || ssid->ssid == NULL)
6011                 return -1;
6012
6013         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6014             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6015                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6016                            "already running");
6017                 if (go == 0 &&
6018                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6019                                          wpa_s->parent, NULL)) {
6020                         /*
6021                          * This can happen if Invitation Response frame was lost
6022                          * and the peer (GO of a persistent group) tries to
6023                          * invite us again. Reschedule the timeout to avoid
6024                          * terminating the wait for the connection too early
6025                          * since we now know that the peer is still trying to
6026                          * invite us instead of having already started the GO.
6027                          */
6028                         wpa_printf(MSG_DEBUG,
6029                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6030                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6031                                                wpas_p2p_group_formation_timeout,
6032                                                wpa_s->parent, NULL);
6033                 }
6034                 return 0;
6035         }
6036
6037         os_free(wpa_s->global->add_psk);
6038         wpa_s->global->add_psk = NULL;
6039
6040         /* Make sure we are not running find during connection establishment */
6041         wpas_p2p_stop_find_oper(wpa_s);
6042
6043         wpa_s->p2p_fallback_to_go_neg = 0;
6044
6045         if (ssid->mode == WPAS_MODE_P2P_GO) {
6046                 if (force_freq > 0) {
6047                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6048                         if (freq < 0)
6049                                 return -1;
6050                 } else {
6051                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6052                         if (freq < 0 ||
6053                             (freq > 0 && !freq_included(wpa_s, channels, freq)))
6054                                 freq = 0;
6055                 }
6056         } else if (ssid->mode == WPAS_MODE_INFRA) {
6057                 freq = neg_freq;
6058                 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6059                         struct os_reltime now;
6060                         struct wpa_bss *bss =
6061                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6062
6063                         os_get_reltime(&now);
6064                         if (bss &&
6065                             !os_reltime_expired(&now, &bss->last_update, 5) &&
6066                             freq_included(wpa_s, channels, bss->freq))
6067                                 freq = bss->freq;
6068                         else
6069                                 freq = 0;
6070                 }
6071
6072                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6073                                              force_scan);
6074         } else {
6075                 return -1;
6076         }
6077
6078         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
6079                 return -1;
6080
6081         params.role_go = 1;
6082         params.psk_set = ssid->psk_set;
6083         if (params.psk_set)
6084                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6085         if (ssid->passphrase) {
6086                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6087                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6088                                    "persistent group");
6089                         return -1;
6090                 }
6091                 os_strlcpy(params.passphrase, ssid->passphrase,
6092                            sizeof(params.passphrase));
6093         }
6094         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6095         params.ssid_len = ssid->ssid_len;
6096         params.persistent_group = 1;
6097
6098         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6099         if (wpa_s == NULL)
6100                 return -1;
6101
6102         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6103
6104         wpa_s->p2p_first_connection_timeout = connection_timeout;
6105         wpas_start_wps_go(wpa_s, &params, 0);
6106
6107         return 0;
6108 }
6109
6110
6111 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6112                                struct wpabuf *proberesp_ies)
6113 {
6114         struct wpa_supplicant *wpa_s = ctx;
6115         if (wpa_s->ap_iface) {
6116                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6117                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6118                         wpabuf_free(beacon_ies);
6119                         wpabuf_free(proberesp_ies);
6120                         return;
6121                 }
6122                 if (beacon_ies) {
6123                         wpabuf_free(hapd->p2p_beacon_ie);
6124                         hapd->p2p_beacon_ie = beacon_ies;
6125                 }
6126                 wpabuf_free(hapd->p2p_probe_resp_ie);
6127                 hapd->p2p_probe_resp_ie = proberesp_ies;
6128         } else {
6129                 wpabuf_free(beacon_ies);
6130                 wpabuf_free(proberesp_ies);
6131         }
6132         wpa_supplicant_ap_update_beacon(wpa_s);
6133 }
6134
6135
6136 static void wpas_p2p_idle_update(void *ctx, int idle)
6137 {
6138         struct wpa_supplicant *wpa_s = ctx;
6139         if (!wpa_s->ap_iface)
6140                 return;
6141         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6142         if (idle) {
6143                 if (wpa_s->global->p2p_fail_on_wps_complete &&
6144                     wpa_s->p2p_in_provisioning) {
6145                         wpas_p2p_grpform_fail_after_wps(wpa_s);
6146                         return;
6147                 }
6148                 wpas_p2p_set_group_idle_timeout(wpa_s);
6149         } else
6150                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6151 }
6152
6153
6154 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6155                                        struct wpa_ssid *ssid)
6156 {
6157         struct p2p_group *group;
6158         struct p2p_group_config *cfg;
6159
6160         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6161                 return NULL;
6162
6163         cfg = os_zalloc(sizeof(*cfg));
6164         if (cfg == NULL)
6165                 return NULL;
6166
6167         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6168                 cfg->persistent_group = 2;
6169         else if (ssid->p2p_persistent_group)
6170                 cfg->persistent_group = 1;
6171         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6172         if (wpa_s->max_stations &&
6173             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6174                 cfg->max_clients = wpa_s->max_stations;
6175         else
6176                 cfg->max_clients = wpa_s->conf->max_num_sta;
6177         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6178         cfg->ssid_len = ssid->ssid_len;
6179         cfg->freq = ssid->frequency;
6180         cfg->cb_ctx = wpa_s;
6181         cfg->ie_update = wpas_p2p_ie_update;
6182         cfg->idle_update = wpas_p2p_idle_update;
6183
6184         group = p2p_group_init(wpa_s->global->p2p, cfg);
6185         if (group == NULL)
6186                 os_free(cfg);
6187         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6188                 p2p_group_notif_formation_done(group);
6189         wpa_s->p2p_group = group;
6190         return group;
6191 }
6192
6193
6194 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6195                           int registrar)
6196 {
6197         struct wpa_ssid *ssid = wpa_s->current_ssid;
6198
6199         if (!wpa_s->p2p_in_provisioning) {
6200                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6201                            "provisioning not in progress");
6202                 return;
6203         }
6204
6205         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6206                 u8 go_dev_addr[ETH_ALEN];
6207                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6208                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6209                                           ssid->ssid_len);
6210                 /* Clear any stored provisioning info */
6211                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6212         }
6213
6214         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6215                              NULL);
6216         wpa_s->p2p_go_group_formation_completed = 1;
6217         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6218                 /*
6219                  * Use a separate timeout for initial data connection to
6220                  * complete to allow the group to be removed automatically if
6221                  * something goes wrong in this step before the P2P group idle
6222                  * timeout mechanism is taken into use.
6223                  */
6224                 wpa_dbg(wpa_s, MSG_DEBUG,
6225                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6226                         P2P_MAX_INITIAL_CONN_WAIT);
6227                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6228                                        wpas_p2p_group_formation_timeout,
6229                                        wpa_s->parent, NULL);
6230         } else if (ssid) {
6231                 /*
6232                  * Use a separate timeout for initial data connection to
6233                  * complete to allow the group to be removed automatically if
6234                  * the client does not complete data connection successfully.
6235                  */
6236                 wpa_dbg(wpa_s, MSG_DEBUG,
6237                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6238                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6239                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6240                                        wpas_p2p_group_formation_timeout,
6241                                        wpa_s->parent, NULL);
6242                 /*
6243                  * Complete group formation on first successful data connection
6244                  */
6245                 wpa_s->p2p_go_group_formation_completed = 0;
6246         }
6247         if (wpa_s->global->p2p)
6248                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6249         wpas_group_formation_completed(wpa_s, 1, 0);
6250 }
6251
6252
6253 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6254                          struct wps_event_fail *fail)
6255 {
6256         if (!wpa_s->p2p_in_provisioning) {
6257                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6258                            "provisioning not in progress");
6259                 return;
6260         }
6261
6262         if (wpa_s->go_params) {
6263                 p2p_clear_provisioning_info(
6264                         wpa_s->global->p2p,
6265                         wpa_s->go_params->peer_device_addr);
6266         }
6267
6268         wpas_notify_p2p_wps_failed(wpa_s, fail);
6269
6270         if (wpa_s == wpa_s->global->p2p_group_formation) {
6271                 /*
6272                  * Allow some time for the failed WPS negotiation exchange to
6273                  * complete, but remove the group since group formation cannot
6274                  * succeed after provisioning failure.
6275                  */
6276                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6277                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6278                 eloop_deplete_timeout(0, 50000,
6279                                       wpas_p2p_group_formation_timeout,
6280                                       wpa_s->parent, NULL);
6281         }
6282 }
6283
6284
6285 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6286 {
6287         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6288             !wpa_s->p2p_in_provisioning)
6289                 return 0;
6290
6291         wpas_p2p_grpform_fail_after_wps(wpa_s);
6292
6293         return 1;
6294 }
6295
6296
6297 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6298                        const char *config_method,
6299                        enum wpas_p2p_prov_disc_use use,
6300                        struct p2ps_provision *p2ps_prov)
6301 {
6302         u16 config_methods;
6303
6304         wpa_s->global->pending_p2ps_group = 0;
6305         wpa_s->global->pending_p2ps_group_freq = 0;
6306         wpa_s->p2p_fallback_to_go_neg = 0;
6307         wpa_s->pending_pd_use = NORMAL_PD;
6308         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6309                 p2ps_prov->conncap = p2ps_group_capability(
6310                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6311                         &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6312
6313                 wpa_printf(MSG_DEBUG,
6314                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6315                            __func__, p2ps_prov->conncap,
6316                            p2ps_prov->adv_id, p2ps_prov->conncap,
6317                            p2ps_prov->status, p2ps_prov->info);
6318
6319                 config_methods = 0;
6320         } else if (os_strncmp(config_method, "display", 7) == 0)
6321                 config_methods = WPS_CONFIG_DISPLAY;
6322         else if (os_strncmp(config_method, "keypad", 6) == 0)
6323                 config_methods = WPS_CONFIG_KEYPAD;
6324         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6325                  os_strncmp(config_method, "pushbutton", 10) == 0)
6326                 config_methods = WPS_CONFIG_PUSHBUTTON;
6327         else {
6328                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6329                 os_free(p2ps_prov);
6330                 return -1;
6331         }
6332
6333         if (use == WPAS_P2P_PD_AUTO) {
6334                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6335                 wpa_s->pending_pd_config_methods = config_methods;
6336                 wpa_s->p2p_auto_pd = 1;
6337                 wpa_s->p2p_auto_join = 0;
6338                 wpa_s->pending_pd_before_join = 0;
6339                 wpa_s->auto_pd_scan_retry = 0;
6340                 wpas_p2p_stop_find(wpa_s);
6341                 wpa_s->p2p_join_scan_count = 0;
6342                 os_get_reltime(&wpa_s->p2p_auto_started);
6343                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6344                            wpa_s->p2p_auto_started.sec,
6345                            wpa_s->p2p_auto_started.usec);
6346                 wpas_p2p_join_scan(wpa_s, NULL);
6347                 return 0;
6348         }
6349
6350         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6351                 os_free(p2ps_prov);
6352                 return -1;
6353         }
6354
6355         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6356                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6357                                  0, 1);
6358 }
6359
6360
6361 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6362                               char *end)
6363 {
6364         return p2p_scan_result_text(ies, ies_len, buf, end);
6365 }
6366
6367
6368 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6369 {
6370         if (!offchannel_pending_action_tx(wpa_s))
6371                 return;
6372
6373         if (wpa_s->p2p_send_action_work)
6374                 wpas_p2p_free_send_action_work(wpa_s);
6375
6376         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6377                    "operation request");
6378         offchannel_clear_pending_action_tx(wpa_s);
6379 }
6380
6381
6382 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6383                   enum p2p_discovery_type type,
6384                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6385                   const u8 *dev_id, unsigned int search_delay,
6386                   u8 seek_cnt, const char **seek_string, int freq)
6387 {
6388         wpas_p2p_clear_pending_action_tx(wpa_s);
6389         wpa_s->p2p_long_listen = 0;
6390
6391         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6392             wpa_s->p2p_in_provisioning)
6393                 return -1;
6394
6395         wpa_supplicant_cancel_sched_scan(wpa_s);
6396
6397         return p2p_find(wpa_s->global->p2p, timeout, type,
6398                         num_req_dev_types, req_dev_types, dev_id,
6399                         search_delay, seek_cnt, seek_string, freq);
6400 }
6401
6402
6403 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6404                                             struct wpa_scan_results *scan_res)
6405 {
6406         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6407
6408         if (wpa_s->p2p_scan_work) {
6409                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6410                 wpa_s->p2p_scan_work = NULL;
6411                 radio_work_done(work);
6412         }
6413
6414         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6415                 return;
6416
6417         /*
6418          * Indicate that results have been processed so that the P2P module can
6419          * continue pending tasks.
6420          */
6421         p2p_scan_res_handled(wpa_s->global->p2p);
6422 }
6423
6424
6425 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6426 {
6427         wpas_p2p_clear_pending_action_tx(wpa_s);
6428         wpa_s->p2p_long_listen = 0;
6429         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6430         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6431
6432         if (wpa_s->global->p2p)
6433                 p2p_stop_find(wpa_s->global->p2p);
6434
6435         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6436                 wpa_printf(MSG_DEBUG,
6437                            "P2P: Do not consider the scan results after stop_find");
6438                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6439         }
6440 }
6441
6442
6443 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6444 {
6445         wpas_p2p_stop_find_oper(wpa_s);
6446         if (!wpa_s->global->pending_group_iface_for_p2ps)
6447                 wpas_p2p_remove_pending_group_interface(wpa_s);
6448 }
6449
6450
6451 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6452 {
6453         struct wpa_supplicant *wpa_s = eloop_ctx;
6454         wpa_s->p2p_long_listen = 0;
6455 }
6456
6457
6458 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6459 {
6460         int res;
6461
6462         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6463                 return -1;
6464
6465         wpa_supplicant_cancel_sched_scan(wpa_s);
6466         wpas_p2p_clear_pending_action_tx(wpa_s);
6467
6468         if (timeout == 0) {
6469                 /*
6470                  * This is a request for unlimited Listen state. However, at
6471                  * least for now, this is mapped to a Listen state for one
6472                  * hour.
6473                  */
6474                 timeout = 3600;
6475         }
6476         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6477         wpa_s->p2p_long_listen = 0;
6478
6479         /*
6480          * Stop previous find/listen operation to avoid trying to request a new
6481          * remain-on-channel operation while the driver is still running the
6482          * previous one.
6483          */
6484         if (wpa_s->global->p2p)
6485                 p2p_stop_find(wpa_s->global->p2p);
6486
6487         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6488         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6489                 wpa_s->p2p_long_listen = timeout * 1000;
6490                 eloop_register_timeout(timeout, 0,
6491                                        wpas_p2p_long_listen_timeout,
6492                                        wpa_s, NULL);
6493         }
6494
6495         return res;
6496 }
6497
6498
6499 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6500                           u8 *buf, size_t len, int p2p_group)
6501 {
6502         struct wpabuf *p2p_ie;
6503         int ret;
6504
6505         if (wpa_s->global->p2p_disabled)
6506                 return -1;
6507         /*
6508          * Advertize mandatory cross connection capability even on
6509          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6510          */
6511         if (wpa_s->conf->p2p_disabled && p2p_group)
6512                 return -1;
6513         if (wpa_s->global->p2p == NULL)
6514                 return -1;
6515         if (bss == NULL)
6516                 return -1;
6517
6518         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6519         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6520                                p2p_group, p2p_ie);
6521         wpabuf_free(p2p_ie);
6522
6523         return ret;
6524 }
6525
6526
6527 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6528                           const u8 *dst, const u8 *bssid,
6529                           const u8 *ie, size_t ie_len,
6530                           unsigned int rx_freq, int ssi_signal)
6531 {
6532         if (wpa_s->global->p2p_disabled)
6533                 return 0;
6534         if (wpa_s->global->p2p == NULL)
6535                 return 0;
6536
6537         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6538                                  ie, ie_len, rx_freq)) {
6539         case P2P_PREQ_NOT_P2P:
6540                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6541                                  ssi_signal);
6542                 /* fall through */
6543         case P2P_PREQ_MALFORMED:
6544         case P2P_PREQ_NOT_LISTEN:
6545         case P2P_PREQ_NOT_PROCESSED:
6546         default: /* make gcc happy */
6547                 return 0;
6548         case P2P_PREQ_PROCESSED:
6549                 return 1;
6550         }
6551 }
6552
6553
6554 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6555                         const u8 *sa, const u8 *bssid,
6556                         u8 category, const u8 *data, size_t len, int freq)
6557 {
6558         if (wpa_s->global->p2p_disabled)
6559                 return;
6560         if (wpa_s->global->p2p == NULL)
6561                 return;
6562
6563         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6564                       freq);
6565 }
6566
6567
6568 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6569 {
6570         if (wpa_s->global->p2p_disabled)
6571                 return;
6572         if (wpa_s->global->p2p == NULL)
6573                 return;
6574
6575         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6576 }
6577
6578
6579 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6580 {
6581         p2p_group_deinit(wpa_s->p2p_group);
6582         wpa_s->p2p_group = NULL;
6583
6584         wpa_s->ap_configured_cb = NULL;
6585         wpa_s->ap_configured_cb_ctx = NULL;
6586         wpa_s->ap_configured_cb_data = NULL;
6587         wpa_s->connect_without_scan = NULL;
6588 }
6589
6590
6591 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6592 {
6593         wpa_s->p2p_long_listen = 0;
6594
6595         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6596                 return -1;
6597
6598         return p2p_reject(wpa_s->global->p2p, addr);
6599 }
6600
6601
6602 /* Invite to reinvoke a persistent group */
6603 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6604                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6605                     int ht40, int vht, int pref_freq)
6606 {
6607         enum p2p_invite_role role;
6608         u8 *bssid = NULL;
6609         int force_freq = 0;
6610         int res;
6611         int no_pref_freq_given = pref_freq == 0;
6612         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6613
6614         wpa_s->global->p2p_invite_group = NULL;
6615         if (peer_addr)
6616                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6617         else
6618                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6619
6620         wpa_s->p2p_persistent_go_freq = freq;
6621         wpa_s->p2p_go_ht40 = !!ht40;
6622         if (ssid->mode == WPAS_MODE_P2P_GO) {
6623                 role = P2P_INVITE_ROLE_GO;
6624                 if (peer_addr == NULL) {
6625                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6626                                    "address in invitation command");
6627                         return -1;
6628                 }
6629                 if (wpas_p2p_create_iface(wpa_s)) {
6630                         if (wpas_p2p_add_group_interface(wpa_s,
6631                                                          WPA_IF_P2P_GO) < 0) {
6632                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6633                                            "allocate a new interface for the "
6634                                            "group");
6635                                 return -1;
6636                         }
6637                         bssid = wpa_s->pending_interface_addr;
6638                 } else
6639                         bssid = wpa_s->own_addr;
6640         } else {
6641                 role = P2P_INVITE_ROLE_CLIENT;
6642                 peer_addr = ssid->bssid;
6643         }
6644         wpa_s->pending_invite_ssid_id = ssid->id;
6645
6646         size = P2P_MAX_PREF_CHANNELS;
6647         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6648                                    role == P2P_INVITE_ROLE_GO,
6649                                    pref_freq_list, &size);
6650         if (res)
6651                 return res;
6652         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6653
6654         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6655                 return -1;
6656
6657         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6658             no_pref_freq_given && pref_freq > 0 &&
6659             wpa_s->num_multichan_concurrent > 1 &&
6660             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6661                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6662                            pref_freq);
6663                 pref_freq = 0;
6664         }
6665
6666         /*
6667          * Stop any find/listen operations before invitation and possibly
6668          * connection establishment.
6669          */
6670         wpas_p2p_stop_find_oper(wpa_s);
6671
6672         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6673                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6674                           1, pref_freq, -1);
6675 }
6676
6677
6678 /* Invite to join an active group */
6679 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6680                           const u8 *peer_addr, const u8 *go_dev_addr)
6681 {
6682         struct wpa_global *global = wpa_s->global;
6683         enum p2p_invite_role role;
6684         u8 *bssid = NULL;
6685         struct wpa_ssid *ssid;
6686         int persistent;
6687         int freq = 0, force_freq = 0, pref_freq = 0;
6688         int res;
6689         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6690
6691         wpa_s->p2p_persistent_go_freq = 0;
6692         wpa_s->p2p_go_ht40 = 0;
6693         wpa_s->p2p_go_vht = 0;
6694
6695         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6696                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6697                         break;
6698         }
6699         if (wpa_s == NULL) {
6700                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6701                 return -1;
6702         }
6703
6704         ssid = wpa_s->current_ssid;
6705         if (ssid == NULL) {
6706                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6707                            "invitation");
6708                 return -1;
6709         }
6710
6711         wpa_s->global->p2p_invite_group = wpa_s;
6712         persistent = ssid->p2p_persistent_group &&
6713                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6714                                         ssid->ssid, ssid->ssid_len);
6715
6716         if (ssid->mode == WPAS_MODE_P2P_GO) {
6717                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6718                 bssid = wpa_s->own_addr;
6719                 if (go_dev_addr == NULL)
6720                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6721                 freq = ssid->frequency;
6722         } else {
6723                 role = P2P_INVITE_ROLE_CLIENT;
6724                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6725                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6726                                    "invite to current group");
6727                         return -1;
6728                 }
6729                 bssid = wpa_s->bssid;
6730                 if (go_dev_addr == NULL &&
6731                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6732                         go_dev_addr = wpa_s->go_dev_addr;
6733                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6734                         (int) wpa_s->assoc_freq;
6735         }
6736         wpa_s->parent->pending_invite_ssid_id = -1;
6737
6738         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6739                 return -1;
6740
6741         size = P2P_MAX_PREF_CHANNELS;
6742         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6743                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
6744                                    pref_freq_list, &size);
6745         if (res)
6746                 return res;
6747         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6748
6749         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6750                           ssid->ssid, ssid->ssid_len, force_freq,
6751                           go_dev_addr, persistent, pref_freq, -1);
6752 }
6753
6754
6755 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6756 {
6757         struct wpa_ssid *ssid = wpa_s->current_ssid;
6758         u8 go_dev_addr[ETH_ALEN];
6759         int network_id = -1;
6760         int persistent;
6761         int freq;
6762         u8 ip[3 * 4];
6763         char ip_addr[100];
6764
6765         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6766                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6767                                      wpa_s->parent, NULL);
6768         }
6769
6770         if (!wpa_s->show_group_started || !ssid)
6771                 return;
6772
6773         wpa_s->show_group_started = 0;
6774
6775         os_memset(go_dev_addr, 0, ETH_ALEN);
6776         if (ssid->bssid_set)
6777                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6778         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6779                                                ssid->ssid_len);
6780         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6781
6782         if (wpa_s->global->p2p_group_formation == wpa_s)
6783                 wpa_s->global->p2p_group_formation = NULL;
6784
6785         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6786                 (int) wpa_s->assoc_freq;
6787
6788         ip_addr[0] = '\0';
6789         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6790                 int res;
6791
6792                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6793                                   " ip_addr=%u.%u.%u.%u "
6794                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6795                                   ip[0], ip[1], ip[2], ip[3],
6796                                   ip[4], ip[5], ip[6], ip[7],
6797                                   ip[8], ip[9], ip[10], ip[11]);
6798                 if (os_snprintf_error(sizeof(ip_addr), res))
6799                         ip_addr[0] = '\0';
6800         }
6801
6802         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6803                                ssid->passphrase == NULL && ssid->psk_set ?
6804                                ssid->psk : NULL,
6805                                ssid->passphrase, go_dev_addr, persistent,
6806                                ip_addr);
6807
6808         if (persistent)
6809                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6810                                                              ssid, go_dev_addr);
6811         if (network_id < 0)
6812                 network_id = ssid->id;
6813         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6814 }
6815
6816
6817 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6818                           u32 interval1, u32 duration2, u32 interval2)
6819 {
6820         int ret;
6821
6822         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6823                 return -1;
6824
6825         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6826             wpa_s->current_ssid == NULL ||
6827             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6828                 return -1;
6829
6830         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6831                                wpa_s->own_addr, wpa_s->assoc_freq,
6832                                duration1, interval1, duration2, interval2);
6833         if (ret == 0)
6834                 wpa_s->waiting_presence_resp = 1;
6835
6836         return ret;
6837 }
6838
6839
6840 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6841                         unsigned int interval)
6842 {
6843         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6844                 return -1;
6845
6846         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6847 }
6848
6849
6850 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6851 {
6852         if (wpa_s->current_ssid == NULL) {
6853                 /*
6854                  * current_ssid can be cleared when P2P client interface gets
6855                  * disconnected, so assume this interface was used as P2P
6856                  * client.
6857                  */
6858                 return 1;
6859         }
6860         return wpa_s->current_ssid->p2p_group &&
6861                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6862 }
6863
6864
6865 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6866 {
6867         struct wpa_supplicant *wpa_s = eloop_ctx;
6868
6869         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6870                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6871                            "disabled");
6872                 return;
6873         }
6874
6875         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6876                    "group");
6877         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6878 }
6879
6880
6881 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6882 {
6883         int timeout;
6884
6885         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6886                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6887
6888         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6889                 return;
6890
6891         timeout = wpa_s->conf->p2p_group_idle;
6892         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6893             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6894             timeout = P2P_MAX_CLIENT_IDLE;
6895
6896         if (timeout == 0)
6897                 return;
6898
6899         if (timeout < 0) {
6900                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6901                         timeout = 0; /* special client mode no-timeout */
6902                 else
6903                         return;
6904         }
6905
6906         if (wpa_s->p2p_in_provisioning) {
6907                 /*
6908                  * Use the normal group formation timeout during the
6909                  * provisioning phase to avoid terminating this process too
6910                  * early due to group idle timeout.
6911                  */
6912                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6913                            "during provisioning");
6914                 return;
6915         }
6916
6917         if (wpa_s->show_group_started) {
6918                 /*
6919                  * Use the normal group formation timeout between the end of
6920                  * the provisioning phase and completion of 4-way handshake to
6921                  * avoid terminating this process too early due to group idle
6922                  * timeout.
6923                  */
6924                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6925                            "while waiting for initial 4-way handshake to "
6926                            "complete");
6927                 return;
6928         }
6929
6930         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6931                    timeout);
6932         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6933                                wpa_s, NULL);
6934 }
6935
6936
6937 /* Returns 1 if the interface was removed */
6938 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6939                           u16 reason_code, const u8 *ie, size_t ie_len,
6940                           int locally_generated)
6941 {
6942         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6943                 return 0;
6944
6945         if (!locally_generated)
6946                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6947                                  ie_len);
6948
6949         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6950             wpa_s->current_ssid &&
6951             wpa_s->current_ssid->p2p_group &&
6952             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6953                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6954                            "session is ending");
6955                 if (wpas_p2p_group_delete(wpa_s,
6956                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6957                     > 0)
6958                         return 1;
6959         }
6960
6961         return 0;
6962 }
6963
6964
6965 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6966                              u16 reason_code, const u8 *ie, size_t ie_len,
6967                              int locally_generated)
6968 {
6969         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6970                 return;
6971
6972         if (!locally_generated)
6973                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6974                                    ie_len);
6975 }
6976
6977
6978 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6979 {
6980         struct p2p_data *p2p = wpa_s->global->p2p;
6981
6982         if (p2p == NULL)
6983                 return;
6984
6985         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6986                 return;
6987
6988         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6989                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6990
6991         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6992                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6993
6994         if (wpa_s->wps &&
6995             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6996                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6997
6998         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6999                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7000
7001         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7002                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7003                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7004                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7005                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7006         }
7007
7008         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7009                 p2p_set_sec_dev_types(p2p,
7010                                       (void *) wpa_s->conf->sec_device_type,
7011                                       wpa_s->conf->num_sec_device_types);
7012
7013         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7014                 int i;
7015                 p2p_remove_wps_vendor_extensions(p2p);
7016                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7017                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7018                                 continue;
7019                         p2p_add_wps_vendor_extension(
7020                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
7021                 }
7022         }
7023
7024         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7025             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7026                 char country[3];
7027                 country[0] = wpa_s->conf->country[0];
7028                 country[1] = wpa_s->conf->country[1];
7029                 country[2] = 0x04;
7030                 p2p_set_country(p2p, country);
7031         }
7032
7033         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7034                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7035                                      wpa_s->conf->p2p_ssid_postfix ?
7036                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7037                                      0);
7038         }
7039
7040         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7041                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7042
7043         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7044                 u8 reg_class, channel;
7045                 int ret;
7046                 unsigned int r;
7047                 u8 channel_forced;
7048
7049                 if (wpa_s->conf->p2p_listen_reg_class &&
7050                     wpa_s->conf->p2p_listen_channel) {
7051                         reg_class = wpa_s->conf->p2p_listen_reg_class;
7052                         channel = wpa_s->conf->p2p_listen_channel;
7053                         channel_forced = 1;
7054                 } else {
7055                         reg_class = 81;
7056                         /*
7057                          * Pick one of the social channels randomly as the
7058                          * listen channel.
7059                          */
7060                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7061                                 channel = 1;
7062                         else
7063                                 channel = 1 + (r % 3) * 5;
7064                         channel_forced = 0;
7065                 }
7066                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7067                                              channel_forced);
7068                 if (ret)
7069                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7070                                    "failed: %d", ret);
7071         }
7072         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7073                 u8 op_reg_class, op_channel, cfg_op_channel;
7074                 int ret = 0;
7075                 unsigned int r;
7076                 if (wpa_s->conf->p2p_oper_reg_class &&
7077                     wpa_s->conf->p2p_oper_channel) {
7078                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7079                         op_channel = wpa_s->conf->p2p_oper_channel;
7080                         cfg_op_channel = 1;
7081                 } else {
7082                         op_reg_class = 81;
7083                         /*
7084                          * Use random operation channel from (1, 6, 11)
7085                          *if no other preference is indicated.
7086                          */
7087                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7088                                 op_channel = 1;
7089                         else
7090                                 op_channel = 1 + (r % 3) * 5;
7091                         cfg_op_channel = 0;
7092                 }
7093                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7094                                            cfg_op_channel);
7095                 if (ret)
7096                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7097                                    "failed: %d", ret);
7098         }
7099
7100         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7101                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7102                                       wpa_s->conf->p2p_pref_chan) < 0) {
7103                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7104                                    "update failed");
7105                 }
7106
7107                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7108                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7109                                    "update failed");
7110                 }
7111         }
7112
7113         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7114                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7115 }
7116
7117
7118 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7119                      int duration)
7120 {
7121         if (!wpa_s->ap_iface)
7122                 return -1;
7123         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7124                                    duration);
7125 }
7126
7127
7128 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7129 {
7130         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7131                 return -1;
7132
7133         wpa_s->global->cross_connection = enabled;
7134         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7135
7136         if (!enabled) {
7137                 struct wpa_supplicant *iface;
7138
7139                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7140                 {
7141                         if (iface->cross_connect_enabled == 0)
7142                                 continue;
7143
7144                         iface->cross_connect_enabled = 0;
7145                         iface->cross_connect_in_use = 0;
7146                         wpa_msg_global(iface->parent, MSG_INFO,
7147                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7148                                        iface->ifname,
7149                                        iface->cross_connect_uplink);
7150                 }
7151         }
7152
7153         return 0;
7154 }
7155
7156
7157 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7158 {
7159         struct wpa_supplicant *iface;
7160
7161         if (!uplink->global->cross_connection)
7162                 return;
7163
7164         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7165                 if (!iface->cross_connect_enabled)
7166                         continue;
7167                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7168                     0)
7169                         continue;
7170                 if (iface->ap_iface == NULL)
7171                         continue;
7172                 if (iface->cross_connect_in_use)
7173                         continue;
7174
7175                 iface->cross_connect_in_use = 1;
7176                 wpa_msg_global(iface->parent, MSG_INFO,
7177                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7178                                iface->ifname, iface->cross_connect_uplink);
7179         }
7180 }
7181
7182
7183 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7184 {
7185         struct wpa_supplicant *iface;
7186
7187         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7188                 if (!iface->cross_connect_enabled)
7189                         continue;
7190                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7191                     0)
7192                         continue;
7193                 if (!iface->cross_connect_in_use)
7194                         continue;
7195
7196                 wpa_msg_global(iface->parent, MSG_INFO,
7197                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7198                                iface->ifname, iface->cross_connect_uplink);
7199                 iface->cross_connect_in_use = 0;
7200         }
7201 }
7202
7203
7204 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7205 {
7206         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7207             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7208             wpa_s->cross_connect_disallowed)
7209                 wpas_p2p_disable_cross_connect(wpa_s);
7210         else
7211                 wpas_p2p_enable_cross_connect(wpa_s);
7212         if (!wpa_s->ap_iface &&
7213             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7214                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7215 }
7216
7217
7218 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7219 {
7220         wpas_p2p_disable_cross_connect(wpa_s);
7221         if (!wpa_s->ap_iface &&
7222             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7223                                          wpa_s, NULL))
7224                 wpas_p2p_set_group_idle_timeout(wpa_s);
7225 }
7226
7227
7228 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7229 {
7230         struct wpa_supplicant *iface;
7231
7232         if (!wpa_s->global->cross_connection)
7233                 return;
7234
7235         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7236                 if (iface == wpa_s)
7237                         continue;
7238                 if (iface->drv_flags &
7239                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7240                         continue;
7241                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7242                     iface != wpa_s->parent)
7243                         continue;
7244
7245                 wpa_s->cross_connect_enabled = 1;
7246                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7247                            sizeof(wpa_s->cross_connect_uplink));
7248                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7249                            "%s to %s whenever uplink is available",
7250                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7251
7252                 if (iface->ap_iface || iface->current_ssid == NULL ||
7253                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7254                     iface->cross_connect_disallowed ||
7255                     iface->wpa_state != WPA_COMPLETED)
7256                         break;
7257
7258                 wpa_s->cross_connect_in_use = 1;
7259                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7260                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7261                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7262                 break;
7263         }
7264 }
7265
7266
7267 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7268 {
7269         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7270             !wpa_s->p2p_in_provisioning)
7271                 return 0; /* not P2P client operation */
7272
7273         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7274                    "session overlap");
7275         if (wpa_s != wpa_s->parent)
7276                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
7277         wpas_p2p_group_formation_failed(wpa_s, 0);
7278         return 1;
7279 }
7280
7281
7282 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7283 {
7284         struct wpa_supplicant *wpa_s = eloop_ctx;
7285         wpas_p2p_notif_pbc_overlap(wpa_s);
7286 }
7287
7288
7289 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7290                                   enum wpas_p2p_channel_update_trig trig)
7291 {
7292         struct p2p_channels chan, cli_chan;
7293         struct wpa_used_freq_data *freqs = NULL;
7294         unsigned int num = wpa_s->num_multichan_concurrent;
7295
7296         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7297                 return;
7298
7299         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7300         if (!freqs)
7301                 return;
7302
7303         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7304
7305         os_memset(&chan, 0, sizeof(chan));
7306         os_memset(&cli_chan, 0, sizeof(cli_chan));
7307         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7308                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7309                            "channel list");
7310                 return;
7311         }
7312
7313         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7314
7315         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7316
7317         /*
7318          * The used frequencies map changed, so it is possible that a GO is
7319          * using a channel that is no longer valid for P2P use. It is also
7320          * possible that due to policy consideration, it would be preferable to
7321          * move it to a frequency already used by other station interfaces.
7322          */
7323         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7324
7325         os_free(freqs);
7326 }
7327
7328
7329 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7330                                      struct wpa_scan_results *scan_res)
7331 {
7332         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7333 }
7334
7335
7336 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7337 {
7338         struct wpa_global *global = wpa_s->global;
7339         int found = 0;
7340         const u8 *peer;
7341
7342         if (global->p2p == NULL)
7343                 return -1;
7344
7345         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7346
7347         if (wpa_s->pending_interface_name[0] &&
7348             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7349                 found = 1;
7350
7351         peer = p2p_get_go_neg_peer(global->p2p);
7352         if (peer) {
7353                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7354                            MACSTR, MAC2STR(peer));
7355                 p2p_unauthorize(global->p2p, peer);
7356                 found = 1;
7357         }
7358
7359         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7360                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7361                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7362                 found = 1;
7363         }
7364
7365         if (wpa_s->pending_pd_before_join) {
7366                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7367                 wpa_s->pending_pd_before_join = 0;
7368                 found = 1;
7369         }
7370
7371         wpas_p2p_stop_find(wpa_s);
7372
7373         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7374                 if (wpa_s == global->p2p_group_formation &&
7375                     (wpa_s->p2p_in_provisioning ||
7376                      wpa_s->parent->pending_interface_type ==
7377                      WPA_IF_P2P_CLIENT)) {
7378                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7379                                    "formation found - cancelling",
7380                                    wpa_s->ifname);
7381                         found = 1;
7382                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7383                                              wpa_s->parent, NULL);
7384                         if (wpa_s->p2p_in_provisioning) {
7385                                 wpas_group_formation_completed(wpa_s, 0, 0);
7386                                 break;
7387                         }
7388                         wpas_p2p_group_delete(wpa_s,
7389                                               P2P_GROUP_REMOVAL_REQUESTED);
7390                         break;
7391                 } else if (wpa_s->p2p_in_invitation) {
7392                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7393                                    wpa_s->ifname);
7394                         found = 1;
7395                         wpas_p2p_group_formation_failed(wpa_s, 0);
7396                 }
7397         }
7398
7399         if (!found) {
7400                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7401                 return -1;
7402         }
7403
7404         return 0;
7405 }
7406
7407
7408 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7409 {
7410         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7411                 return;
7412
7413         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7414                    "being available anymore");
7415         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7416 }
7417
7418
7419 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7420                                    int freq_24, int freq_5, int freq_overall)
7421 {
7422         struct p2p_data *p2p = wpa_s->global->p2p;
7423         if (p2p == NULL)
7424                 return;
7425         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7426 }
7427
7428
7429 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7430 {
7431         u8 peer[ETH_ALEN];
7432         struct p2p_data *p2p = wpa_s->global->p2p;
7433
7434         if (p2p == NULL)
7435                 return -1;
7436
7437         if (hwaddr_aton(addr, peer))
7438                 return -1;
7439
7440         return p2p_unauthorize(p2p, peer);
7441 }
7442
7443
7444 /**
7445  * wpas_p2p_disconnect - Disconnect from a P2P Group
7446  * @wpa_s: Pointer to wpa_supplicant data
7447  * Returns: 0 on success, -1 on failure
7448  *
7449  * This can be used to disconnect from a group in which the local end is a P2P
7450  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7451  * virtual network interface was created for this group, that interface will be
7452  * removed. Otherwise, only the configured P2P group network will be removed
7453  * from the interface.
7454  */
7455 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7456 {
7457
7458         if (wpa_s == NULL)
7459                 return -1;
7460
7461         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7462                 -1 : 0;
7463 }
7464
7465
7466 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7467 {
7468         int ret;
7469
7470         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7471                 return 0;
7472
7473         ret = p2p_in_progress(wpa_s->global->p2p);
7474         if (ret == 0) {
7475                 /*
7476                  * Check whether there is an ongoing WPS provisioning step (or
7477                  * other parts of group formation) on another interface since
7478                  * p2p_in_progress() does not report this to avoid issues for
7479                  * scans during such provisioning step.
7480                  */
7481                 if (wpa_s->global->p2p_group_formation &&
7482                     wpa_s->global->p2p_group_formation != wpa_s) {
7483                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7484                                 "in group formation",
7485                                 wpa_s->global->p2p_group_formation->ifname);
7486                         ret = 1;
7487                 }
7488         }
7489
7490         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7491                 struct os_reltime now;
7492                 os_get_reltime(&now);
7493                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7494                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7495                         /* Wait for the first client has expired */
7496                         wpa_s->global->p2p_go_wait_client.sec = 0;
7497                 } else {
7498                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7499                         ret = 1;
7500                 }
7501         }
7502
7503         return ret;
7504 }
7505
7506
7507 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7508                               struct wpa_ssid *ssid)
7509 {
7510         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7511             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7512                                  wpa_s->parent, NULL) > 0) {
7513                 /**
7514                  * Remove the network by scheduling the group formation
7515                  * timeout to happen immediately. The teardown code
7516                  * needs to be scheduled to run asynch later so that we
7517                  * don't delete data from under ourselves unexpectedly.
7518                  * Calling wpas_p2p_group_formation_timeout directly
7519                  * causes a series of crashes in WPS failure scenarios.
7520                  */
7521                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7522                            "P2P group network getting removed");
7523                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7524                                        wpa_s->parent, NULL);
7525         }
7526 }
7527
7528
7529 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7530                                           const u8 *addr, const u8 *ssid,
7531                                           size_t ssid_len)
7532 {
7533         struct wpa_ssid *s;
7534         size_t i;
7535
7536         for (s = wpa_s->conf->ssid; s; s = s->next) {
7537                 if (s->disabled != 2)
7538                         continue;
7539                 if (ssid &&
7540                     (ssid_len != s->ssid_len ||
7541                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7542                         continue;
7543                 if (addr == NULL) {
7544                         if (s->mode == WPAS_MODE_P2P_GO)
7545                                 return s;
7546                         continue;
7547                 }
7548                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7549                         return s; /* peer is GO in the persistent group */
7550                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7551                         continue;
7552                 for (i = 0; i < s->num_p2p_clients; i++) {
7553                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7554                                       addr, ETH_ALEN) == 0)
7555                                 return s; /* peer is P2P client in persistent
7556                                            * group */
7557                 }
7558         }
7559
7560         return NULL;
7561 }
7562
7563
7564 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7565                                        const u8 *addr)
7566 {
7567         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7568                                  wpa_s->parent, NULL) > 0) {
7569                 /*
7570                  * This can happen if WPS provisioning step is not terminated
7571                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7572                  * peer was able to connect, there is no need to time out group
7573                  * formation after this, though. In addition, this is used with
7574                  * the initial connection wait on the GO as a separate formation
7575                  * timeout and as such, expected to be hit after the initial WPS
7576                  * provisioning step.
7577                  */
7578                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7579
7580                 if (!wpa_s->p2p_go_group_formation_completed &&
7581                     !wpa_s->group_formation_reported) {
7582                         /*
7583                          * GO has not yet notified group formation success since
7584                          * the WPS step was not completed cleanly. Do that
7585                          * notification now since the P2P Client was able to
7586                          * connect and as such, must have received the
7587                          * credential from the WPS step.
7588                          */
7589                         if (wpa_s->global->p2p)
7590                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7591                         wpas_group_formation_completed(wpa_s, 1, 0);
7592                 }
7593         }
7594         if (!wpa_s->p2p_go_group_formation_completed) {
7595                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7596                 wpa_s->p2p_go_group_formation_completed = 1;
7597                 wpa_s->global->p2p_group_formation = NULL;
7598                 wpa_s->p2p_in_provisioning = 0;
7599                 wpa_s->p2p_in_invitation = 0;
7600         }
7601         wpa_s->global->p2p_go_wait_client.sec = 0;
7602         if (addr == NULL)
7603                 return;
7604         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7605 }
7606
7607
7608 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7609                                        int group_added)
7610 {
7611         struct wpa_supplicant *group = wpa_s;
7612         int ret = 0;
7613
7614         if (wpa_s->global->p2p_group_formation)
7615                 group = wpa_s->global->p2p_group_formation;
7616         wpa_s = wpa_s->global->p2p_init_wpa_s;
7617         offchannel_send_action_done(wpa_s);
7618         if (group_added)
7619                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7620         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7621         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7622                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7623                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7624                          wpa_s->p2p_persistent_id,
7625                          wpa_s->p2p_pd_before_go_neg,
7626                          wpa_s->p2p_go_ht40,
7627                          wpa_s->p2p_go_vht);
7628         return ret;
7629 }
7630
7631
7632 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7633 {
7634         int res;
7635
7636         if (!wpa_s->p2p_fallback_to_go_neg ||
7637             wpa_s->p2p_in_provisioning <= 5)
7638                 return 0;
7639
7640         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7641                 return 0; /* peer operating as a GO */
7642
7643         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7644                 "fallback to GO Negotiation");
7645         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7646                        "reason=GO-not-found");
7647         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7648
7649         return res == 1 ? 2 : 1;
7650 }
7651
7652
7653 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7654 {
7655         struct wpa_supplicant *ifs;
7656
7657         if (wpa_s->wpa_state > WPA_SCANNING) {
7658                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7659                         "concurrent operation",
7660                         wpa_s->conf->p2p_search_delay);
7661                 return wpa_s->conf->p2p_search_delay;
7662         }
7663
7664         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7665                          radio_list) {
7666                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7667                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7668                                 "delay due to concurrent operation on "
7669                                 "interface %s",
7670                                 wpa_s->conf->p2p_search_delay,
7671                                 ifs->ifname);
7672                         return wpa_s->conf->p2p_search_delay;
7673                 }
7674         }
7675
7676         return 0;
7677 }
7678
7679
7680 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7681                                      struct wpa_ssid *s, const u8 *addr,
7682                                      int iface_addr)
7683 {
7684         struct psk_list_entry *psk, *tmp;
7685         int changed = 0;
7686
7687         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7688                               list) {
7689                 if ((iface_addr && !psk->p2p &&
7690                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7691                     (!iface_addr && psk->p2p &&
7692                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7693                         wpa_dbg(wpa_s, MSG_DEBUG,
7694                                 "P2P: Remove persistent group PSK list entry for "
7695                                 MACSTR " p2p=%u",
7696                                 MAC2STR(psk->addr), psk->p2p);
7697                         dl_list_del(&psk->list);
7698                         os_free(psk);
7699                         changed++;
7700                 }
7701         }
7702
7703         return changed;
7704 }
7705
7706
7707 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7708                          const u8 *p2p_dev_addr,
7709                          const u8 *psk, size_t psk_len)
7710 {
7711         struct wpa_ssid *ssid = wpa_s->current_ssid;
7712         struct wpa_ssid *persistent;
7713         struct psk_list_entry *p, *last;
7714
7715         if (psk_len != sizeof(p->psk))
7716                 return;
7717
7718         if (p2p_dev_addr) {
7719                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7720                         " p2p_dev_addr=" MACSTR,
7721                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7722                 if (is_zero_ether_addr(p2p_dev_addr))
7723                         p2p_dev_addr = NULL;
7724         } else {
7725                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7726                         MAC2STR(mac_addr));
7727         }
7728
7729         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7730                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7731                 /* To be added to persistent group once created */
7732                 if (wpa_s->global->add_psk == NULL) {
7733                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7734                         if (wpa_s->global->add_psk == NULL)
7735                                 return;
7736                 }
7737                 p = wpa_s->global->add_psk;
7738                 if (p2p_dev_addr) {
7739                         p->p2p = 1;
7740                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7741                 } else {
7742                         p->p2p = 0;
7743                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7744                 }
7745                 os_memcpy(p->psk, psk, psk_len);
7746                 return;
7747         }
7748
7749         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7750                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7751                 return;
7752         }
7753
7754         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7755                                              ssid->ssid_len);
7756         if (!persistent) {
7757                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7758                 return;
7759         }
7760
7761         p = os_zalloc(sizeof(*p));
7762         if (p == NULL)
7763                 return;
7764         if (p2p_dev_addr) {
7765                 p->p2p = 1;
7766                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7767         } else {
7768                 p->p2p = 0;
7769                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7770         }
7771         os_memcpy(p->psk, psk, psk_len);
7772
7773         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7774             (last = dl_list_last(&persistent->psk_list,
7775                                  struct psk_list_entry, list))) {
7776                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7777                         MACSTR " (p2p=%u) to make room for a new one",
7778                         MAC2STR(last->addr), last->p2p);
7779                 dl_list_del(&last->list);
7780                 os_free(last);
7781         }
7782
7783         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7784                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7785                                   p2p_dev_addr == NULL);
7786         if (p2p_dev_addr) {
7787                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7788                         MACSTR, MAC2STR(p2p_dev_addr));
7789         } else {
7790                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7791                         MAC2STR(mac_addr));
7792         }
7793         dl_list_add(&persistent->psk_list, &p->list);
7794
7795         if (wpa_s->parent->conf->update_config &&
7796             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7797                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7798 }
7799
7800
7801 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7802                                 struct wpa_ssid *s, const u8 *addr,
7803                                 int iface_addr)
7804 {
7805         int res;
7806
7807         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7808         if (res > 0 && wpa_s->conf->update_config &&
7809             wpa_config_write(wpa_s->confname, wpa_s->conf))
7810                 wpa_dbg(wpa_s, MSG_DEBUG,
7811                         "P2P: Failed to update configuration");
7812 }
7813
7814
7815 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7816                                       const u8 *peer, int iface_addr)
7817 {
7818         struct hostapd_data *hapd;
7819         struct hostapd_wpa_psk *psk, *prev, *rem;
7820         struct sta_info *sta;
7821
7822         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7823             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7824                 return;
7825
7826         /* Remove per-station PSK entry */
7827         hapd = wpa_s->ap_iface->bss[0];
7828         prev = NULL;
7829         psk = hapd->conf->ssid.wpa_psk;
7830         while (psk) {
7831                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7832                     (!iface_addr &&
7833                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7834                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7835                                 MACSTR " iface_addr=%d",
7836                                 MAC2STR(peer), iface_addr);
7837                         if (prev)
7838                                 prev->next = psk->next;
7839                         else
7840                                 hapd->conf->ssid.wpa_psk = psk->next;
7841                         rem = psk;
7842                         psk = psk->next;
7843                         os_free(rem);
7844                 } else {
7845                         prev = psk;
7846                         psk = psk->next;
7847                 }
7848         }
7849
7850         /* Disconnect from group */
7851         if (iface_addr)
7852                 sta = ap_get_sta(hapd, peer);
7853         else
7854                 sta = ap_get_sta_p2p(hapd, peer);
7855         if (sta) {
7856                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7857                         " (iface_addr=%d) from group",
7858                         MAC2STR(peer), iface_addr);
7859                 hostapd_drv_sta_deauth(hapd, sta->addr,
7860                                        WLAN_REASON_DEAUTH_LEAVING);
7861                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7862         }
7863 }
7864
7865
7866 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7867                             int iface_addr)
7868 {
7869         struct wpa_ssid *s;
7870         struct wpa_supplicant *w;
7871         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
7872
7873         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
7874
7875         /* Remove from any persistent group */
7876         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
7877                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
7878                         continue;
7879                 if (!iface_addr)
7880                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
7881                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
7882         }
7883
7884         /* Remove from any operating group */
7885         for (w = wpa_s->global->ifaces; w; w = w->next)
7886                 wpas_p2p_remove_client_go(w, peer, iface_addr);
7887 }
7888
7889
7890 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
7891 {
7892         struct wpa_supplicant *wpa_s = eloop_ctx;
7893         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
7894 }
7895
7896
7897 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
7898 {
7899         struct wpa_supplicant *wpa_s = eloop_ctx;
7900
7901         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
7902         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
7903 }
7904
7905
7906 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
7907                                         struct wpa_ssid *ssid)
7908 {
7909         struct wpa_supplicant *iface;
7910
7911         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7912                 if (!iface->current_ssid ||
7913                     iface->current_ssid->frequency == freq ||
7914                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
7915                      !iface->current_ssid->p2p_group))
7916                         continue;
7917
7918                 /* Remove the connection with least priority */
7919                 if (!wpas_is_p2p_prioritized(iface)) {
7920                         /* STA connection has priority over existing
7921                          * P2P connection, so remove the interface. */
7922                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
7923                         eloop_register_timeout(0, 0,
7924                                                wpas_p2p_group_freq_conflict,
7925                                                iface, NULL);
7926                         /* If connection in progress is P2P connection, do not
7927                          * proceed for the connection. */
7928                         if (wpa_s == iface)
7929                                 return -1;
7930                         else
7931                                 return 0;
7932                 } else {
7933                         /* P2P connection has priority, disable the STA network
7934                          */
7935                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
7936                                                        ssid);
7937                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7938                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7939                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7940                                   ETH_ALEN);
7941                         /* If P2P connection is in progress, continue
7942                          * connecting...*/
7943                         if (wpa_s == iface)
7944                                 return 0;
7945                         else
7946                                 return -1;
7947                 }
7948         }
7949
7950         return 0;
7951 }
7952
7953
7954 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7955 {
7956         struct wpa_ssid *ssid = wpa_s->current_ssid;
7957
7958         if (ssid == NULL || !ssid->p2p_group)
7959                 return 0;
7960
7961         if (wpa_s->p2p_last_4way_hs_fail &&
7962             wpa_s->p2p_last_4way_hs_fail == ssid) {
7963                 u8 go_dev_addr[ETH_ALEN];
7964                 struct wpa_ssid *persistent;
7965
7966                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7967                                               ssid->ssid,
7968                                               ssid->ssid_len) <= 0) {
7969                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7970                         goto disconnect;
7971                 }
7972
7973                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7974                         MACSTR, MAC2STR(go_dev_addr));
7975                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7976                                                      ssid->ssid,
7977                                                      ssid->ssid_len);
7978                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7979                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7980                         goto disconnect;
7981                 }
7982                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7983                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7984                                persistent->id);
7985         disconnect:
7986                 wpa_s->p2p_last_4way_hs_fail = NULL;
7987                 /*
7988                  * Remove the group from a timeout to avoid issues with caller
7989                  * continuing to use the interface if this is on a P2P group
7990                  * interface.
7991                  */
7992                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7993                                        wpa_s, NULL);
7994                 return 1;
7995         }
7996
7997         wpa_s->p2p_last_4way_hs_fail = ssid;
7998         return 0;
7999 }
8000
8001
8002 #ifdef CONFIG_WPS_NFC
8003
8004 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8005                                              struct wpabuf *p2p)
8006 {
8007         struct wpabuf *ret;
8008         size_t wsc_len;
8009
8010         if (p2p == NULL) {
8011                 wpabuf_free(wsc);
8012                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8013                 return NULL;
8014         }
8015
8016         wsc_len = wsc ? wpabuf_len(wsc) : 0;
8017         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8018         if (ret == NULL) {
8019                 wpabuf_free(wsc);
8020                 wpabuf_free(p2p);
8021                 return NULL;
8022         }
8023
8024         wpabuf_put_be16(ret, wsc_len);
8025         if (wsc)
8026                 wpabuf_put_buf(ret, wsc);
8027         wpabuf_put_be16(ret, wpabuf_len(p2p));
8028         wpabuf_put_buf(ret, p2p);
8029
8030         wpabuf_free(wsc);
8031         wpabuf_free(p2p);
8032         wpa_hexdump_buf(MSG_DEBUG,
8033                         "P2P: Generated NFC connection handover message", ret);
8034
8035         if (ndef && ret) {
8036                 struct wpabuf *tmp;
8037                 tmp = ndef_build_p2p(ret);
8038                 wpabuf_free(ret);
8039                 if (tmp == NULL) {
8040                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8041                         return NULL;
8042                 }
8043                 ret = tmp;
8044         }
8045
8046         return ret;
8047 }
8048
8049
8050 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8051                              struct wpa_ssid **ssid, u8 *go_dev_addr)
8052 {
8053         struct wpa_supplicant *iface;
8054
8055         if (go_dev_addr)
8056                 os_memset(go_dev_addr, 0, ETH_ALEN);
8057         if (ssid)
8058                 *ssid = NULL;
8059         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8060                 if (iface->wpa_state < WPA_ASSOCIATING ||
8061                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8062                     !iface->current_ssid->p2p_group ||
8063                     iface->current_ssid->mode != WPAS_MODE_INFRA)
8064                         continue;
8065                 if (ssid)
8066                         *ssid = iface->current_ssid;
8067                 if (go_dev_addr)
8068                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8069                 return iface->assoc_freq;
8070         }
8071         return 0;
8072 }
8073
8074
8075 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8076                                           int ndef)
8077 {
8078         struct wpabuf *wsc, *p2p;
8079         struct wpa_ssid *ssid;
8080         u8 go_dev_addr[ETH_ALEN];
8081         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8082
8083         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8084                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8085                 return NULL;
8086         }
8087
8088         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8089             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8090                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8091                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8092                 return NULL;
8093         }
8094
8095         if (cli_freq == 0) {
8096                 wsc = wps_build_nfc_handover_req_p2p(
8097                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8098         } else
8099                 wsc = NULL;
8100         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8101                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8102                                          ssid ? ssid->ssid_len : 0);
8103
8104         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8105 }
8106
8107
8108 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8109                                           int ndef, int tag)
8110 {
8111         struct wpabuf *wsc, *p2p;
8112         struct wpa_ssid *ssid;
8113         u8 go_dev_addr[ETH_ALEN];
8114         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8115
8116         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8117                 return NULL;
8118
8119         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8120             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8121                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8122                 return NULL;
8123
8124         if (cli_freq == 0) {
8125                 wsc = wps_build_nfc_handover_sel_p2p(
8126                         wpa_s->parent->wps,
8127                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8128                         DEV_PW_NFC_CONNECTION_HANDOVER,
8129                         wpa_s->conf->wps_nfc_dh_pubkey,
8130                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8131         } else
8132                 wsc = NULL;
8133         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8134                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8135                                          ssid ? ssid->ssid_len : 0);
8136
8137         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8138 }
8139
8140
8141 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8142                                    struct p2p_nfc_params *params)
8143 {
8144         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8145                    "connection handover (freq=%d)",
8146                    params->go_freq);
8147
8148         if (params->go_freq && params->go_ssid_len) {
8149                 wpa_s->p2p_wps_method = WPS_NFC;
8150                 wpa_s->pending_join_wps_method = WPS_NFC;
8151                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8152                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8153                           ETH_ALEN);
8154                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8155                                            params->go_ssid,
8156                                            params->go_ssid_len);
8157         }
8158
8159         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8160                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8161                                 params->go_freq, -1, 0, 1, 1);
8162 }
8163
8164
8165 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8166                                   struct p2p_nfc_params *params, int tag)
8167 {
8168         int res, persistent;
8169         struct wpa_ssid *ssid;
8170
8171         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8172                    "connection handover");
8173         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8174                 ssid = wpa_s->current_ssid;
8175                 if (ssid == NULL)
8176                         continue;
8177                 if (ssid->mode != WPAS_MODE_P2P_GO)
8178                         continue;
8179                 if (wpa_s->ap_iface == NULL)
8180                         continue;
8181                 break;
8182         }
8183         if (wpa_s == NULL) {
8184                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8185                 return -1;
8186         }
8187
8188         if (wpa_s->parent->p2p_oob_dev_pw_id !=
8189             DEV_PW_NFC_CONNECTION_HANDOVER &&
8190             !wpa_s->parent->p2p_oob_dev_pw) {
8191                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8192                 return -1;
8193         }
8194         res = wpas_ap_wps_add_nfc_pw(
8195                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
8196                 wpa_s->parent->p2p_oob_dev_pw,
8197                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
8198                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
8199         if (res)
8200                 return res;
8201
8202         if (!tag) {
8203                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8204                 return 0;
8205         }
8206
8207         if (!params->peer ||
8208             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8209                 return 0;
8210
8211         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8212                    " to join", MAC2STR(params->peer->p2p_device_addr));
8213
8214         wpa_s->global->p2p_invite_group = wpa_s;
8215         persistent = ssid->p2p_persistent_group &&
8216                 wpas_p2p_get_persistent(wpa_s->parent,
8217                                         params->peer->p2p_device_addr,
8218                                         ssid->ssid, ssid->ssid_len);
8219         wpa_s->parent->pending_invite_ssid_id = -1;
8220
8221         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8222                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8223                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8224                           wpa_s->global->p2p_dev_addr, persistent, 0,
8225                           wpa_s->parent->p2p_oob_dev_pw_id);
8226 }
8227
8228
8229 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8230                                     struct p2p_nfc_params *params,
8231                                     int forced_freq)
8232 {
8233         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8234                    "connection handover");
8235         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8236                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8237                                 forced_freq, -1, 0, 1, 1);
8238 }
8239
8240
8241 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8242                                     struct p2p_nfc_params *params,
8243                                     int forced_freq)
8244 {
8245         int res;
8246
8247         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8248                    "connection handover");
8249         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8250                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8251                                forced_freq, -1, 0, 1, 1);
8252         if (res)
8253                 return res;
8254
8255         res = wpas_p2p_listen(wpa_s, 60);
8256         if (res) {
8257                 p2p_unauthorize(wpa_s->global->p2p,
8258                                 params->peer->p2p_device_addr);
8259         }
8260
8261         return res;
8262 }
8263
8264
8265 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8266                                             const struct wpabuf *data,
8267                                             int sel, int tag, int forced_freq)
8268 {
8269         const u8 *pos, *end;
8270         u16 len, id;
8271         struct p2p_nfc_params params;
8272         int res;
8273
8274         os_memset(&params, 0, sizeof(params));
8275         params.sel = sel;
8276
8277         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8278
8279         pos = wpabuf_head(data);
8280         end = pos + wpabuf_len(data);
8281
8282         if (end - pos < 2) {
8283                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8284                            "attributes");
8285                 return -1;
8286         }
8287         len = WPA_GET_BE16(pos);
8288         pos += 2;
8289         if (len > end - pos) {
8290                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8291                            "attributes");
8292                 return -1;
8293         }
8294         params.wsc_attr = pos;
8295         params.wsc_len = len;
8296         pos += len;
8297
8298         if (end - pos < 2) {
8299                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8300                            "attributes");
8301                 return -1;
8302         }
8303         len = WPA_GET_BE16(pos);
8304         pos += 2;
8305         if (len > end - pos) {
8306                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8307                            "attributes");
8308                 return -1;
8309         }
8310         params.p2p_attr = pos;
8311         params.p2p_len = len;
8312         pos += len;
8313
8314         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8315                     params.wsc_attr, params.wsc_len);
8316         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8317                     params.p2p_attr, params.p2p_len);
8318         if (pos < end) {
8319                 wpa_hexdump(MSG_DEBUG,
8320                             "P2P: Ignored extra data after P2P attributes",
8321                             pos, end - pos);
8322         }
8323
8324         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8325         if (res)
8326                 return res;
8327
8328         if (params.next_step == NO_ACTION)
8329                 return 0;
8330
8331         if (params.next_step == BOTH_GO) {
8332                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8333                         MAC2STR(params.peer->p2p_device_addr));
8334                 return 0;
8335         }
8336
8337         if (params.next_step == PEER_CLIENT) {
8338                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8339                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8340                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8341                                 " ssid=\"%s\"",
8342                                 MAC2STR(params.peer->p2p_device_addr),
8343                                 params.go_freq,
8344                                 MAC2STR(params.go_dev_addr),
8345                                 wpa_ssid_txt(params.go_ssid,
8346                                              params.go_ssid_len));
8347                 } else {
8348                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8349                                 "peer=" MACSTR " freq=%d",
8350                                 MAC2STR(params.peer->p2p_device_addr),
8351                                 params.go_freq);
8352                 }
8353                 return 0;
8354         }
8355
8356         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8357                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8358                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8359                 return 0;
8360         }
8361
8362         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8363         wpa_s->p2p_oob_dev_pw = NULL;
8364
8365         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8366                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8367                            "received");
8368                 return -1;
8369         }
8370
8371         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8372         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8373         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8374                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8375         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8376                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8377         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8378
8379         if (tag) {
8380                 if (id < 0x10) {
8381                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8382                                    "peer OOB Device Password Id %u", id);
8383                         return -1;
8384                 }
8385                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8386                            "Device Password Id %u", id);
8387                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8388                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8389                                 params.oob_dev_pw_len -
8390                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
8391                 wpa_s->p2p_oob_dev_pw_id = id;
8392                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8393                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8394                         params.oob_dev_pw_len -
8395                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8396                 if (wpa_s->p2p_oob_dev_pw == NULL)
8397                         return -1;
8398
8399                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8400                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8401                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8402                         return -1;
8403         } else {
8404                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8405                            "without Device Password");
8406                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8407         }
8408
8409         switch (params.next_step) {
8410         case NO_ACTION:
8411         case BOTH_GO:
8412         case PEER_CLIENT:
8413                 /* already covered above */
8414                 return 0;
8415         case JOIN_GROUP:
8416                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8417         case AUTH_JOIN:
8418                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8419         case INIT_GO_NEG:
8420                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8421         case RESP_GO_NEG:
8422                 /* TODO: use own OOB Dev Pw */
8423                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8424         }
8425
8426         return -1;
8427 }
8428
8429
8430 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8431                              const struct wpabuf *data, int forced_freq)
8432 {
8433         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8434                 return -1;
8435
8436         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8437 }
8438
8439
8440 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8441                                  const struct wpabuf *req,
8442                                  const struct wpabuf *sel, int forced_freq)
8443 {
8444         struct wpabuf *tmp;
8445         int ret;
8446
8447         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8448                 return -1;
8449
8450         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8451
8452         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8453                           wpabuf_head(req), wpabuf_len(req));
8454         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8455                           wpabuf_head(sel), wpabuf_len(sel));
8456         if (forced_freq)
8457                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8458         tmp = ndef_parse_p2p(init ? sel : req);
8459         if (tmp == NULL) {
8460                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8461                 return -1;
8462         }
8463
8464         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8465                                                forced_freq);
8466         wpabuf_free(tmp);
8467
8468         return ret;
8469 }
8470
8471
8472 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8473 {
8474         const u8 *if_addr;
8475         int go_intent = wpa_s->conf->p2p_go_intent;
8476         struct wpa_supplicant *iface;
8477
8478         if (wpa_s->global->p2p == NULL)
8479                 return -1;
8480
8481         if (!enabled) {
8482                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8483                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8484                 {
8485                         if (!iface->ap_iface)
8486                                 continue;
8487                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8488                 }
8489                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8490                                                  0, NULL);
8491                 if (wpa_s->p2p_nfc_tag_enabled)
8492                         wpas_p2p_remove_pending_group_interface(wpa_s);
8493                 wpa_s->p2p_nfc_tag_enabled = 0;
8494                 return 0;
8495         }
8496
8497         if (wpa_s->global->p2p_disabled)
8498                 return -1;
8499
8500         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8501             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8502             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8503             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8504                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8505                            "to allow static handover cases");
8506                 return -1;
8507         }
8508
8509         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8510
8511         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8512         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8513         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8514         if (wpa_s->p2p_oob_dev_pw == NULL)
8515                 return -1;
8516         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8517
8518         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8519             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8520                 /*
8521                  * P2P Group Interface present and the command came on group
8522                  * interface, so enable the token for the current interface.
8523                  */
8524                 wpa_s->create_p2p_iface = 0;
8525         } else {
8526                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8527         }
8528
8529         if (wpa_s->create_p2p_iface) {
8530                 enum wpa_driver_if_type iftype;
8531                 /* Prepare to add a new interface for the group */
8532                 iftype = WPA_IF_P2P_GROUP;
8533                 if (go_intent == 15)
8534                         iftype = WPA_IF_P2P_GO;
8535                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8536                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8537                                    "interface for the group");
8538                         return -1;
8539                 }
8540
8541                 if_addr = wpa_s->pending_interface_addr;
8542         } else
8543                 if_addr = wpa_s->own_addr;
8544
8545         wpa_s->p2p_nfc_tag_enabled = enabled;
8546
8547         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8548                 struct hostapd_data *hapd;
8549                 if (iface->ap_iface == NULL)
8550                         continue;
8551                 hapd = iface->ap_iface->bss[0];
8552                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8553                 hapd->conf->wps_nfc_dh_pubkey =
8554                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8555                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8556                 hapd->conf->wps_nfc_dh_privkey =
8557                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8558                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8559                 hapd->conf->wps_nfc_dev_pw =
8560                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8561                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8562
8563                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8564                         wpa_dbg(iface, MSG_DEBUG,
8565                                 "P2P: Failed to enable NFC Tag for GO");
8566                 }
8567         }
8568         p2p_set_authorized_oob_dev_pw_id(
8569                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8570                 if_addr);
8571
8572         return 0;
8573 }
8574
8575 #endif /* CONFIG_WPS_NFC */
8576
8577
8578 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8579                                              struct wpa_used_freq_data *freqs,
8580                                              unsigned int num)
8581 {
8582         u8 curr_chan, cand, chan;
8583         unsigned int i;
8584
8585         /*
8586          * If possible, optimize the Listen channel to be a channel that is
8587          * already used by one of the other interfaces.
8588          */
8589         if (!wpa_s->conf->p2p_optimize_listen_chan)
8590                 return;
8591
8592         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8593                 return;
8594
8595         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8596         for (i = 0, cand = 0; i < num; i++) {
8597                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8598                 if (curr_chan == chan) {
8599                         cand = 0;
8600                         break;
8601                 }
8602
8603                 if (chan == 1 || chan == 6 || chan == 11)
8604                         cand = chan;
8605         }
8606
8607         if (cand) {
8608                 wpa_dbg(wpa_s, MSG_DEBUG,
8609                         "P2P: Update Listen channel to %u based on operating channel",
8610                         cand);
8611                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8612         }
8613 }
8614
8615
8616 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8617 {
8618         struct hostapd_config *conf;
8619         struct p2p_go_neg_results params;
8620         struct csa_settings csa_settings;
8621         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8622         int old_freq = current_ssid->frequency;
8623         int ret;
8624
8625         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8626                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8627                 return -1;
8628         }
8629
8630         /*
8631          * TODO: This function may not always work correctly. For example,
8632          * when we have a running GO and a BSS on a DFS channel.
8633          */
8634         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, NULL)) {
8635                 wpa_dbg(wpa_s, MSG_DEBUG,
8636                         "P2P CSA: Failed to select new frequency for GO");
8637                 return -1;
8638         }
8639
8640         if (current_ssid->frequency == params.freq) {
8641                 wpa_dbg(wpa_s, MSG_DEBUG,
8642                         "P2P CSA: Selected same frequency - not moving GO");
8643                 return 0;
8644         }
8645
8646         conf = hostapd_config_defaults();
8647         if (!conf) {
8648                 wpa_dbg(wpa_s, MSG_DEBUG,
8649                         "P2P CSA: Failed to allocate default config");
8650                 return -1;
8651         }
8652
8653         current_ssid->frequency = params.freq;
8654         if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
8655                 wpa_dbg(wpa_s, MSG_DEBUG,
8656                         "P2P CSA: Failed to create new GO config");
8657                 ret = -1;
8658                 goto out;
8659         }
8660
8661         if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
8662                 wpa_dbg(wpa_s, MSG_DEBUG,
8663                         "P2P CSA: CSA to a different band is not supported");
8664                 ret = -1;
8665                 goto out;
8666         }
8667
8668         os_memset(&csa_settings, 0, sizeof(csa_settings));
8669         csa_settings.cs_count = P2P_GO_CSA_COUNT;
8670         csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
8671         csa_settings.freq_params.freq = params.freq;
8672         csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
8673         csa_settings.freq_params.ht_enabled = conf->ieee80211n;
8674         csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
8675
8676         if (conf->ieee80211ac) {
8677                 int freq1 = 0, freq2 = 0;
8678                 u8 chan, opclass;
8679
8680                 if (ieee80211_freq_to_channel_ext(params.freq,
8681                                                   conf->secondary_channel,
8682                                                   conf->vht_oper_chwidth,
8683                                                   &opclass, &chan) ==
8684                     NUM_HOSTAPD_MODES) {
8685                         wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
8686                         ret = -1;
8687                         goto out;
8688                 }
8689
8690                 if (conf->vht_oper_centr_freq_seg0_idx)
8691                         freq1 = ieee80211_chan_to_freq(
8692                                 NULL, opclass,
8693                                 conf->vht_oper_centr_freq_seg0_idx);
8694
8695                 if (conf->vht_oper_centr_freq_seg1_idx)
8696                         freq2 = ieee80211_chan_to_freq(
8697                                 NULL, opclass,
8698                                 conf->vht_oper_centr_freq_seg1_idx);
8699
8700                 if (freq1 < 0 || freq2 < 0) {
8701                         wpa_dbg(wpa_s, MSG_DEBUG,
8702                                 "P2P CSA: Selected invalid VHT center freqs");
8703                         ret = -1;
8704                         goto out;
8705                 }
8706
8707                 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
8708                 csa_settings.freq_params.center_freq1 = freq1;
8709                 csa_settings.freq_params.center_freq2 = freq2;
8710
8711                 switch (conf->vht_oper_chwidth) {
8712                 case VHT_CHANWIDTH_80MHZ:
8713                 case VHT_CHANWIDTH_80P80MHZ:
8714                         csa_settings.freq_params.bandwidth = 80;
8715                         break;
8716                 case VHT_CHANWIDTH_160MHZ:
8717                         csa_settings.freq_params.bandwidth = 160;
8718                         break;
8719                 }
8720         }
8721
8722         ret = ap_switch_channel(wpa_s, &csa_settings);
8723 out:
8724         current_ssid->frequency = old_freq;
8725         hostapd_config_free(conf);
8726         return ret;
8727 }
8728
8729
8730 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8731 {
8732         struct p2p_go_neg_results params;
8733         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8734
8735         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8736
8737         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8738                 current_ssid->frequency);
8739
8740         /* Stop the AP functionality */
8741         /* TODO: Should do this in a way that does not indicated to possible
8742          * P2P Clients in the group that the group is terminated. */
8743         wpa_supplicant_ap_deinit(wpa_s);
8744
8745         /* Reselect the GO frequency */
8746         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, NULL)) {
8747                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8748                 wpas_p2p_group_delete(wpa_s,
8749                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8750                 return;
8751         }
8752         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8753                 params.freq);
8754
8755         if (params.freq &&
8756             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8757                 wpa_printf(MSG_DEBUG,
8758                            "P2P: Selected freq (%u MHz) is not valid for P2P",
8759                            params.freq);
8760                 wpas_p2p_group_delete(wpa_s,
8761                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8762                 return;
8763         }
8764
8765         /* Update the frequency */
8766         current_ssid->frequency = params.freq;
8767         wpa_s->connect_without_scan = current_ssid;
8768         wpa_s->reassociate = 1;
8769         wpa_s->disconnected = 0;
8770         wpa_supplicant_req_scan(wpa_s, 0, 0);
8771 }
8772
8773
8774 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8775 {
8776         struct wpa_supplicant *wpa_s = eloop_ctx;
8777
8778         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8779                 return;
8780
8781         wpas_p2p_go_update_common_freqs(wpa_s);
8782
8783         /* Do not move GO in the middle of a CSA */
8784         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8785                 wpa_printf(MSG_DEBUG,
8786                            "P2P: CSA is in progress - not moving GO");
8787                 return;
8788         }
8789
8790         /*
8791          * First, try a channel switch flow. If it is not supported or fails,
8792          * take down the GO and bring it up again.
8793          */
8794         if (wpas_p2p_move_go_csa(wpa_s) < 0)
8795                 wpas_p2p_move_go_no_csa(wpa_s);
8796 }
8797
8798
8799 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
8800 {
8801         struct wpa_supplicant *wpa_s = eloop_ctx;
8802         struct wpa_used_freq_data *freqs = NULL;
8803         unsigned int num = wpa_s->num_multichan_concurrent;
8804
8805         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8806         if (!freqs)
8807                 return;
8808
8809         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8810
8811         /* Previous attempt to move a GO was not possible -- try again. */
8812         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
8813                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
8814
8815         os_free(freqs);
8816 }
8817
8818
8819 /*
8820  * Consider moving a GO from its currently used frequency:
8821  * 1. It is possible that due to regulatory consideration the frequency
8822  *    can no longer be used and there is a need to evacuate the GO.
8823  * 2. It is possible that due to MCC considerations, it would be preferable
8824  *    to move the GO to a channel that is currently used by some other
8825  *    station interface.
8826  *
8827  * In case a frequency that became invalid is once again valid, cancel a
8828  * previously initiated GO frequency change.
8829  */
8830 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
8831                                             struct wpa_used_freq_data *freqs,
8832                                             unsigned int num)
8833 {
8834         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
8835         unsigned int timeout;
8836         int freq;
8837
8838         wpas_p2p_go_update_common_freqs(wpa_s);
8839
8840         freq = wpa_s->current_ssid->frequency;
8841         for (i = 0, invalid_freq = 0; i < num; i++) {
8842                 if (freqs[i].freq == freq) {
8843                         flags = freqs[i].flags;
8844
8845                         /* The channel is invalid, must change it */
8846                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
8847                                 wpa_dbg(wpa_s, MSG_DEBUG,
8848                                         "P2P: Freq=%d MHz no longer valid for GO",
8849                                         freq);
8850                                 invalid_freq = 1;
8851                         }
8852                 } else if (freqs[i].flags == 0) {
8853                         /* Freq is not used by any other station interface */
8854                         continue;
8855                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
8856                                                freqs[i].freq)) {
8857                         /* Freq is not valid for P2P use cases */
8858                         continue;
8859                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8860                            P2P_GO_FREQ_MOVE_SCM) {
8861                         policy_move = 1;
8862                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8863                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
8864                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
8865                         policy_move = 1;
8866                 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
8867                             P2P_GO_FREQ_MOVE_SCM_ECSA) &&
8868                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
8869                         if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
8870                                 policy_move = 1;
8871                         } else if ((wpa_s->drv_flags &
8872                                     WPA_DRIVER_FLAGS_AP_CSA) &&
8873                                    wpas_p2p_go_clients_support_ecsa(wpa_s)) {
8874                                 u8 chan;
8875
8876                                 /*
8877                                  * We do not support CSA between bands, so move
8878                                  * GO only within the same band.
8879                                  */
8880                                 if (wpa_s->ap_iface->current_mode->mode ==
8881                                     ieee80211_freq_to_chan(freqs[i].freq,
8882                                                            &chan))
8883                                         policy_move = 1;
8884                         }
8885                 }
8886         }
8887
8888         wpa_dbg(wpa_s, MSG_DEBUG,
8889                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
8890                 invalid_freq, policy_move, flags);
8891
8892         /*
8893          * The channel is valid, or we are going to have a policy move, so
8894          * cancel timeout.
8895          */
8896         if (!invalid_freq || policy_move) {
8897                 wpa_dbg(wpa_s, MSG_DEBUG,
8898                         "P2P: Cancel a GO move from freq=%d MHz", freq);
8899                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
8900
8901                 if (wpas_p2p_in_progress(wpa_s)) {
8902                         wpa_dbg(wpa_s, MSG_DEBUG,
8903                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
8904                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
8905                                              wpa_s, NULL);
8906                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
8907                                                wpas_p2p_reconsider_moving_go,
8908                                                wpa_s, NULL);
8909                         return;
8910                 }
8911         }
8912
8913         if (!invalid_freq && (!policy_move || flags != 0)) {
8914                 wpa_dbg(wpa_s, MSG_DEBUG,
8915                         "P2P: Not initiating a GO frequency change");
8916                 return;
8917         }
8918
8919         /*
8920          * Do not consider moving GO if it is in the middle of a CSA. When the
8921          * CSA is finished this flow should be retriggered.
8922          */
8923         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8924                 wpa_dbg(wpa_s, MSG_DEBUG,
8925                         "P2P: Not initiating a GO frequency change - CSA is in progress");
8926                 return;
8927         }
8928
8929         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
8930                 timeout = P2P_GO_FREQ_CHANGE_TIME;
8931         else
8932                 timeout = 0;
8933
8934         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
8935                 freq, timeout);
8936         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
8937         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
8938 }
8939
8940
8941 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
8942                                          struct wpa_used_freq_data *freqs,
8943                                          unsigned int num,
8944                                          enum wpas_p2p_channel_update_trig trig)
8945 {
8946         struct wpa_supplicant *ifs;
8947
8948         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
8949                              NULL);
8950
8951         /*
8952          * Travers all the radio interfaces, and for each GO interface, check
8953          * if there is a need to move the GO from the frequency it is using,
8954          * or in case the frequency is valid again, cancel the evacuation flow.
8955          */
8956         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
8957                          radio_list) {
8958                 if (ifs->current_ssid == NULL ||
8959                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
8960                         continue;
8961
8962                 /*
8963                  * The GO was just started or completed channel switch, no need
8964                  * to move it.
8965                  */
8966                 if (wpa_s == ifs &&
8967                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
8968                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
8969                         wpa_dbg(wpa_s, MSG_DEBUG,
8970                                 "P2P: GO move - schedule re-consideration");
8971                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
8972                                                wpas_p2p_reconsider_moving_go,
8973                                                wpa_s, NULL);
8974                         continue;
8975                 }
8976
8977                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
8978         }
8979 }
8980
8981
8982 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
8983 {
8984         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8985                 return;
8986
8987         wpas_p2p_update_channel_list(wpa_s,
8988                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
8989 }
8990
8991
8992 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
8993 {
8994         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
8995                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
8996                         "the management interface is being removed");
8997                 wpas_p2p_deinit_global(wpa_s->global);
8998         }
8999 }
9000
9001
9002 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9003 {
9004         if (wpa_s->ap_iface->bss)
9005                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9006         wpas_p2p_group_deinit(wpa_s);
9007 }