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  52  * it is currently using, but is no longer valid for P2P use cases.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  57  * Defines CSA parameters which are used when GO evacuates the no longer valid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                 return;
3119         }
3120
3121         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3122                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3123                            "invitation exchange to indicate readiness for "
3124                            "re-invocation");
3125         }
3126
3127         if (status != P2P_SC_SUCCESS) {
3128                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3129                         ssid = wpa_config_get_network(
3130                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3131                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3132                 }
3133                 wpas_p2p_remove_pending_group_interface(wpa_s);
3134                 return;
3135         }
3136
3137         ssid = wpa_config_get_network(wpa_s->conf,
3138                                       wpa_s->pending_invite_ssid_id);
3139         if (ssid == NULL) {
3140                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3141                            "data matching with invitation");
3142                 return;
3143         }
3144
3145         /*
3146          * The peer could have missed our ctrl::ack frame for Invitation
3147          * Response and continue retransmitting the frame. To reduce the
3148          * likelihood of the peer not getting successful TX status for the
3149          * Invitation Response frame, wait a short time here before starting
3150          * the persistent group so that we will remain on the current channel to
3151          * acknowledge any possible retransmission from the peer.
3152          */
3153         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3154                 "starting persistent group");
3155         os_sleep(0, 50000);
3156
3157         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3158             freq_included(wpa_s, channels, neg_freq))
3159                 freq = neg_freq;
3160         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3161                  freq_included(wpa_s, channels, peer_oper_freq))
3162                 freq = peer_oper_freq;
3163         else
3164                 freq = 0;
3165
3166         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3167                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3168         wpas_p2p_group_add_persistent(wpa_s, ssid,
3169                                       ssid->mode == WPAS_MODE_P2P_GO,
3170                                       wpa_s->p2p_persistent_go_freq,
3171                                       freq,
3172                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3173                                       channels,
3174                                       ssid->mode == WPAS_MODE_P2P_GO ?
3175                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3176                                       0, 1);
3177 }
3178
3179
3180 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3181                                     unsigned int freq)
3182 {
3183         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3184                 return 1;
3185         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3186 }
3187
3188
3189 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3190 {
3191         reg->channel[reg->channels] = chan;
3192         reg->channels++;
3193 }
3194
3195
3196 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3197                                      struct p2p_channels *chan,
3198                                      struct p2p_channels *cli_chan)
3199 {
3200         int i, cla = 0;
3201
3202         wpa_s->global->p2p_24ghz_social_channels = 1;
3203
3204         os_memset(cli_chan, 0, sizeof(*cli_chan));
3205
3206         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3207                    "band");
3208
3209         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3210         chan->reg_class[cla].reg_class = 81;
3211         chan->reg_class[cla].channels = 0;
3212         for (i = 0; i < 11; i++) {
3213                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3214                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3215         }
3216         if (chan->reg_class[cla].channels)
3217                 cla++;
3218
3219         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3220                    "band");
3221
3222         /* Operating class 115 - 5 GHz, channels 36-48 */
3223         chan->reg_class[cla].reg_class = 115;
3224         chan->reg_class[cla].channels = 0;
3225         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3226                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3227         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3228                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3229         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3230                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3231         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3232                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3233         if (chan->reg_class[cla].channels)
3234                 cla++;
3235
3236         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3237                    "band");
3238
3239         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3240         chan->reg_class[cla].reg_class = 124;
3241         chan->reg_class[cla].channels = 0;
3242         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3243                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3244         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3245                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3246         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3247                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3248         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3249                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3250         if (chan->reg_class[cla].channels)
3251                 cla++;
3252
3253         chan->reg_classes = cla;
3254         return 0;
3255 }
3256
3257
3258 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3259                                           u16 num_modes,
3260                                           enum hostapd_hw_mode mode)
3261 {
3262         u16 i;
3263
3264         for (i = 0; i < num_modes; i++) {
3265                 if (modes[i].mode == mode)
3266                         return &modes[i];
3267         }
3268
3269         return NULL;
3270 }
3271
3272
3273 enum chan_allowed {
3274         NOT_ALLOWED, NO_IR, ALLOWED
3275 };
3276
3277 static int has_channel(struct wpa_global *global,
3278                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3279 {
3280         int i;
3281         unsigned int freq;
3282
3283         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3284                 chan * 5;
3285         if (wpas_p2p_disallowed_freq(global, freq))
3286                 return NOT_ALLOWED;
3287
3288         for (i = 0; i < mode->num_channels; i++) {
3289                 if (mode->channels[i].chan == chan) {
3290                         if (flags)
3291                                 *flags = mode->channels[i].flag;
3292                         if (mode->channels[i].flag &
3293                             (HOSTAPD_CHAN_DISABLED |
3294                              HOSTAPD_CHAN_RADAR))
3295                                 return NOT_ALLOWED;
3296                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3297                                 return NO_IR;
3298                         return ALLOWED;
3299                 }
3300         }
3301
3302         return NOT_ALLOWED;
3303 }
3304
3305
3306 struct p2p_oper_class_map {
3307         enum hostapd_hw_mode mode;
3308         u8 op_class;
3309         u8 min_chan;
3310         u8 max_chan;
3311         u8 inc;
3312         enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160 } bw;
3313 };
3314
3315 static const struct p2p_oper_class_map op_class[] = {
3316         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3317 #if 0 /* Do not enable HT40 on 2 GHz for now */
3318         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3319         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3320 #endif
3321         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3322         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3323         { HOSTAPD_MODE_IEEE80211A, 125, 149, 169, 4, BW20 },
3324         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3325         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3326         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3327         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3328
3329         /*
3330          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3331          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3332          * 80 MHz, but currently use the following definition for simplicity
3333          * (these center frequencies are not actual channels, which makes
3334          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3335          * removing invalid channels.
3336          */
3337         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3338         { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
3339         { -1, 0, 0, 0, 0, BW20 }
3340 };
3341
3342
3343 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3344                                      struct hostapd_hw_modes *mode,
3345                                      u8 channel)
3346 {
3347         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3348         unsigned int i;
3349
3350         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3351                 return 0;
3352
3353         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3354                 /*
3355                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3356                  * so the center channel is 6 channels away from the start/end.
3357                  */
3358                 if (channel >= center_channels[i] - 6 &&
3359                     channel <= center_channels[i] + 6)
3360                         return center_channels[i];
3361
3362         return 0;
3363 }
3364
3365
3366 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3367                                                struct hostapd_hw_modes *mode,
3368                                                u8 channel, u8 bw)
3369 {
3370         u8 center_chan;
3371         int i, flags;
3372         enum chan_allowed res, ret = ALLOWED;
3373
3374         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3375         if (!center_chan)
3376                 return NOT_ALLOWED;
3377         if (center_chan >= 58 && center_chan <= 138)
3378                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3379
3380         /* check all the channels are available */
3381         for (i = 0; i < 4; i++) {
3382                 int adj_chan = center_chan - 6 + i * 4;
3383
3384                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3385                 if (res == NOT_ALLOWED)
3386                         return NOT_ALLOWED;
3387                 if (res == NO_IR)
3388                         ret = NO_IR;
3389
3390                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3391                         return NOT_ALLOWED;
3392                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3393                         return NOT_ALLOWED;
3394                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3395                         return NOT_ALLOWED;
3396                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3397                         return NOT_ALLOWED;
3398         }
3399
3400         return ret;
3401 }
3402
3403
3404 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3405                                                  struct hostapd_hw_modes *mode,
3406                                                  u8 channel, u8 bw)
3407 {
3408         int flag = 0;
3409         enum chan_allowed res, res2;
3410
3411         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3412         if (bw == BW40MINUS) {
3413                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3414                         return NOT_ALLOWED;
3415                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3416         } else if (bw == BW40PLUS) {
3417                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3418                         return NOT_ALLOWED;
3419                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3420         } else if (bw == BW80) {
3421                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3422         }
3423
3424         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3425                 return NOT_ALLOWED;
3426         if (res == NO_IR || res2 == NO_IR)
3427                 return NO_IR;
3428         return res;
3429 }
3430
3431
3432 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3433                                    struct p2p_channels *chan,
3434                                    struct p2p_channels *cli_chan)
3435 {
3436         struct hostapd_hw_modes *mode;
3437         int cla, op, cli_cla;
3438
3439         if (wpa_s->hw.modes == NULL) {
3440                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3441                            "of all supported channels; assume dualband "
3442                            "support");
3443                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3444         }
3445
3446         cla = cli_cla = 0;
3447
3448         for (op = 0; op_class[op].op_class; op++) {
3449                 const struct p2p_oper_class_map *o = &op_class[op];
3450                 u8 ch;
3451                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3452
3453                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3454                 if (mode == NULL)
3455                         continue;
3456                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3457                         wpa_s->global->p2p_24ghz_social_channels = 1;
3458                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3459                         enum chan_allowed res;
3460                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3461                         if (res == ALLOWED) {
3462                                 if (reg == NULL) {
3463                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3464                                                    o->op_class);
3465                                         reg = &chan->reg_class[cla];
3466                                         cla++;
3467                                         reg->reg_class = o->op_class;
3468                                 }
3469                                 reg->channel[reg->channels] = ch;
3470                                 reg->channels++;
3471                         } else if (res == NO_IR &&
3472                                    wpa_s->conf->p2p_add_cli_chan) {
3473                                 if (cli_reg == NULL) {
3474                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3475                                                    o->op_class);
3476                                         cli_reg = &cli_chan->reg_class[cli_cla];
3477                                         cli_cla++;
3478                                         cli_reg->reg_class = o->op_class;
3479                                 }
3480                                 cli_reg->channel[cli_reg->channels] = ch;
3481                                 cli_reg->channels++;
3482                         }
3483                 }
3484                 if (reg) {
3485                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3486                                     reg->channel, reg->channels);
3487                 }
3488                 if (cli_reg) {
3489                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3490                                     cli_reg->channel, cli_reg->channels);
3491                 }
3492         }
3493
3494         chan->reg_classes = cla;
3495         cli_chan->reg_classes = cli_cla;
3496
3497         return 0;
3498 }
3499
3500
3501 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3502                            struct hostapd_hw_modes *mode, u8 channel)
3503 {
3504         int op;
3505         enum chan_allowed ret;
3506
3507         for (op = 0; op_class[op].op_class; op++) {
3508                 const struct p2p_oper_class_map *o = &op_class[op];
3509                 u8 ch;
3510
3511                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3512                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3513                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3514                             ch != channel)
3515                                 continue;
3516                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3517                         if (ret == ALLOWED)
3518                                 return (o->bw == BW40MINUS) ? -1 : 1;
3519                 }
3520         }
3521         return 0;
3522 }
3523
3524
3525 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3526                               struct hostapd_hw_modes *mode, u8 channel)
3527 {
3528         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3529                 return 0;
3530
3531         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3532 }
3533
3534
3535 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3536                         size_t buf_len)
3537 {
3538         struct wpa_supplicant *wpa_s = ctx;
3539
3540         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3541                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3542                         break;
3543         }
3544         if (wpa_s == NULL)
3545                 return -1;
3546
3547         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3548 }
3549
3550
3551 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3552                                               const u8 *ssid, size_t ssid_len)
3553 {
3554         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3555                 struct wpa_ssid *s = wpa_s->current_ssid;
3556                 if (s == NULL)
3557                         continue;
3558                 if (s->mode != WPAS_MODE_P2P_GO &&
3559                     s->mode != WPAS_MODE_AP &&
3560                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3561                         continue;
3562                 if (s->ssid_len != ssid_len ||
3563                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3564                         continue;
3565                 return wpa_s;
3566         }
3567
3568         return NULL;
3569
3570 }
3571
3572
3573 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3574                                                   const u8 *peer_dev_addr)
3575 {
3576         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3577                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3578                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3579                         continue;
3580                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3581                         return wpa_s;
3582         }
3583
3584         return NULL;
3585 }
3586
3587
3588 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3589 {
3590         struct wpa_supplicant *wpa_s = ctx;
3591
3592         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3593 }
3594
3595
3596 static int wpas_is_concurrent_session_active(void *ctx)
3597 {
3598         struct wpa_supplicant *wpa_s = ctx;
3599         struct wpa_supplicant *ifs;
3600
3601         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3602                 if (ifs == wpa_s)
3603                         continue;
3604                 if (ifs->wpa_state > WPA_ASSOCIATED)
3605                         return 1;
3606         }
3607         return 0;
3608 }
3609
3610
3611 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3612 {
3613         struct wpa_supplicant *wpa_s = ctx;
3614         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3615 }
3616
3617
3618 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3619                                   const char *conf_p2p_dev)
3620 {
3621         struct wpa_interface iface;
3622         struct wpa_supplicant *p2pdev_wpa_s;
3623         char ifname[100];
3624         char force_name[100];
3625         int ret;
3626
3627         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3628                           wpa_s->ifname);
3629         if (os_snprintf_error(sizeof(ifname), ret))
3630                 return -1;
3631         force_name[0] = '\0';
3632         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3633         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3634                              force_name, wpa_s->pending_interface_addr, NULL);
3635         if (ret < 0) {
3636                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3637                 return ret;
3638         }
3639         os_strlcpy(wpa_s->pending_interface_name, ifname,
3640                    sizeof(wpa_s->pending_interface_name));
3641
3642         os_memset(&iface, 0, sizeof(iface));
3643         iface.p2p_mgmt = 1;
3644         iface.ifname = wpa_s->pending_interface_name;
3645         iface.driver = wpa_s->driver->name;
3646         iface.driver_param = wpa_s->conf->driver_param;
3647
3648         /*
3649          * If a P2P Device configuration file was given, use it as the interface
3650          * configuration file (instead of using parent's configuration file.
3651          */
3652         if (conf_p2p_dev) {
3653                 iface.confname = conf_p2p_dev;
3654                 iface.ctrl_interface = NULL;
3655         } else {
3656                 iface.confname = wpa_s->confname;
3657                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3658         }
3659
3660         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3661         if (!p2pdev_wpa_s) {
3662                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3663                 return -1;
3664         }
3665
3666         wpa_s->pending_interface_name[0] = '\0';
3667         return 0;
3668 }
3669
3670
3671 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3672                                const u8 *noa, size_t noa_len)
3673 {
3674         struct wpa_supplicant *wpa_s, *intf = ctx;
3675         char hex[100];
3676
3677         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3678                 if (wpa_s->waiting_presence_resp)
3679                         break;
3680         }
3681         if (!wpa_s) {
3682                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3683                 return;
3684         }
3685         wpa_s->waiting_presence_resp = 0;
3686
3687         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3688         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3689                 " status=%u noa=%s", MAC2STR(src), status, hex);
3690 }
3691
3692
3693 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3694                                      size_t ssid_len, u8 *go_dev_addr,
3695                                      u8 *ret_ssid, size_t *ret_ssid_len,
3696                                      u8 *intended_iface_addr)
3697 {
3698         struct wpa_supplicant *wpa_s = ctx;
3699         struct wpa_ssid *s;
3700
3701         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3702         if (s) {
3703                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3704                 *ret_ssid_len = s->ssid_len;
3705                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3706
3707                 if (s->mode != WPAS_MODE_P2P_GO) {
3708                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3709                 } else if (wpas_p2p_create_iface(wpa_s)) {
3710                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3711                                 return 0;
3712
3713                         os_memcpy(intended_iface_addr,
3714                                   wpa_s->pending_interface_addr, ETH_ALEN);
3715                 } else {
3716                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3717                                   ETH_ALEN);
3718                 }
3719                 return 1;
3720         }
3721
3722         return 0;
3723 }
3724
3725
3726 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3727                             u8 *ssid, size_t *ssid_len, int *group_iface,
3728                             unsigned int *freq)
3729 {
3730         struct wpa_supplicant *wpa_s = ctx;
3731         struct wpa_supplicant *go;
3732         struct wpa_ssid *s;
3733
3734         /*
3735          * group_iface will be set to 1 only if a dedicated interface for P2P
3736          * role is required. First, we try to reuse an active GO. However,
3737          * if it is not present, we will try to reactivate an existing
3738          * persistent group and set group_iface to 1, so the caller will know
3739          * that the pending interface should be used.
3740          */
3741         *group_iface = 0;
3742
3743         if (freq)
3744                 *freq = 0;
3745
3746         go = wpas_p2p_get_go_group(wpa_s);
3747         if (!go) {
3748                 s = wpas_p2p_get_persistent_go(wpa_s);
3749                 *group_iface = wpas_p2p_create_iface(wpa_s);
3750                 if (s)
3751                         os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3752                 else
3753                         return 0;
3754         } else {
3755                 s = go->current_ssid;
3756                 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3757                 if (freq)
3758                         *freq = go->assoc_freq;
3759         }
3760
3761         os_memcpy(ssid, s->ssid, s->ssid_len);
3762         *ssid_len = s->ssid_len;
3763
3764         return 1;
3765 }
3766
3767
3768 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3769                                     const u8 *ssid, size_t ssid_len)
3770 {
3771         struct wpa_supplicant *wpa_s = ctx;
3772         struct wpa_ssid *s;
3773         int save_config = 0;
3774         size_t i;
3775
3776         /* Start with our first choice of Persistent Groups */
3777         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3778                 if (go && ssid && ssid_len &&
3779                     s->ssid_len == ssid_len &&
3780                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3781                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3782                         break;
3783
3784                 /* Remove stale persistent group */
3785                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3786                         wpa_config_remove_network(wpa_s->conf, s->id);
3787                         save_config = 1;
3788                         continue;
3789                 }
3790
3791                 for (i = 0; i < s->num_p2p_clients; i++) {
3792                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3793                                       peer, ETH_ALEN) != 0)
3794                                 continue;
3795
3796                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3797                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3798                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3799                         break;
3800                 }
3801                 s->num_p2p_clients--;
3802                 save_config = 1;
3803         }
3804
3805         if (save_config)
3806                 p2p_config_write(wpa_s);
3807
3808         /* Return TRUE if valid SSID remains */
3809         return s != NULL;
3810 }
3811
3812
3813 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3814                                        const u8 *feat_cap, size_t feat_cap_len)
3815 {
3816         static const char pref[] = " feature_cap=";
3817         int ret;
3818
3819         buf[0] = '\0';
3820
3821         /*
3822          * We expect a feature capability to contain at least one byte to be
3823          * reported. The string buffer provided by the caller function is
3824          * expected to be big enough to contain all bytes of the attribute for
3825          * known specifications. This function truncates the reported bytes if
3826          * the feature capability data exceeds the string buffer size.
3827          */
3828         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3829                 return;
3830
3831         os_memcpy(buf, pref, sizeof(pref));
3832         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3833                                buf_len - sizeof(pref) + 1,
3834                                feat_cap, feat_cap_len);
3835
3836         if (ret != (2 * (int) feat_cap_len))
3837                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3838 }
3839
3840
3841 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3842                                     const u8 *adv_mac, const u8 *ses_mac,
3843                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3844                                     u8 conncap, int passwd_id,
3845                                     const u8 *persist_ssid,
3846                                     size_t persist_ssid_size, int response_done,
3847                                     int prov_start, const char *session_info,
3848                                     const u8 *feat_cap, size_t feat_cap_len,
3849                                     unsigned int freq)
3850 {
3851         struct wpa_supplicant *wpa_s = ctx;
3852         u8 mac[ETH_ALEN];
3853         struct wpa_ssid *persistent_go, *stale, *s = NULL;
3854         int save_config = 0;
3855         struct wpa_supplicant *go_wpa_s;
3856         char feat_cap_str[256];
3857
3858         if (!dev)
3859                 return;
3860
3861         os_memset(mac, 0, ETH_ALEN);
3862         if (!adv_mac)
3863                 adv_mac = mac;
3864         if (!ses_mac)
3865                 ses_mac = mac;
3866         if (!grp_mac)
3867                 grp_mac = mac;
3868
3869         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3870                                    feat_cap, feat_cap_len);
3871
3872         if (prov_start) {
3873                 if (session_info == NULL) {
3874                         wpa_msg_global(wpa_s, MSG_INFO,
3875                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3876                                        " adv_id=%x conncap=%x"
3877                                        " adv_mac=" MACSTR
3878                                        " session=%x mac=" MACSTR
3879                                        " dev_passwd_id=%d%s",
3880                                        MAC2STR(dev), adv_id, conncap,
3881                                        MAC2STR(adv_mac),
3882                                        ses_id, MAC2STR(ses_mac),
3883                                        passwd_id, feat_cap_str);
3884                 } else {
3885                         wpa_msg_global(wpa_s, MSG_INFO,
3886                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3887                                        " adv_id=%x conncap=%x"
3888                                        " adv_mac=" MACSTR
3889                                        " session=%x mac=" MACSTR
3890                                        " dev_passwd_id=%d info='%s'%s",
3891                                        MAC2STR(dev), adv_id, conncap,
3892                                        MAC2STR(adv_mac),
3893                                        ses_id, MAC2STR(ses_mac),
3894                                        passwd_id, session_info, feat_cap_str);
3895                 }
3896                 return;
3897         }
3898
3899         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
3900         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3901
3902         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
3903                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3904                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3905
3906                 if (persistent_go && !persistent_go->num_p2p_clients) {
3907                         /* remove empty persistent GO */
3908                         wpa_config_remove_network(wpa_s->conf,
3909                                                   persistent_go->id);
3910                 }
3911
3912                 wpa_msg_global(wpa_s, MSG_INFO,
3913                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3914                                " status=%d"
3915                                " adv_id=%x adv_mac=" MACSTR
3916                                " session=%x mac=" MACSTR "%s",
3917                                MAC2STR(dev), status,
3918                                adv_id, MAC2STR(adv_mac),
3919                                ses_id, MAC2STR(ses_mac), feat_cap_str);
3920                 return;
3921         }
3922
3923         /* Clean up stale persistent groups with this device */
3924         if (persist_ssid && persist_ssid_size)
3925                 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
3926                                             persist_ssid_size);
3927
3928         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
3929             is_zero_ether_addr(grp_mac)) {
3930                 wpa_dbg(wpa_s, MSG_ERROR,
3931                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
3932                 return;
3933         }
3934
3935         for (;;) {
3936                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
3937                 if (!stale)
3938                         break;
3939
3940                 if (s && s->ssid_len == stale->ssid_len &&
3941                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
3942                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
3943                         break;
3944
3945                 /* Remove stale persistent group */
3946                 if (stale->mode != WPAS_MODE_P2P_GO ||
3947                     stale->num_p2p_clients <= 1) {
3948                         wpa_config_remove_network(wpa_s->conf, stale->id);
3949                 } else {
3950                         size_t i;
3951
3952                         for (i = 0; i < stale->num_p2p_clients; i++) {
3953                                 if (os_memcmp(stale->p2p_client_list +
3954                                               i * ETH_ALEN,
3955                                               dev, ETH_ALEN) == 0) {
3956                                         os_memmove(stale->p2p_client_list +
3957                                                    i * ETH_ALEN,
3958                                                    stale->p2p_client_list +
3959                                                    (i + 1) * ETH_ALEN,
3960                                                    (stale->num_p2p_clients -
3961                                                     i - 1) * ETH_ALEN);
3962                                         break;
3963                                 }
3964                         }
3965                         stale->num_p2p_clients--;
3966                 }
3967                 save_config = 1;
3968         }
3969
3970         if (save_config)
3971                 p2p_config_write(wpa_s);
3972
3973         if (s) {
3974                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3975                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3976
3977                 if (persistent_go && s != persistent_go &&
3978                     !persistent_go->num_p2p_clients) {
3979                         /* remove empty persistent GO */
3980                         wpa_config_remove_network(wpa_s->conf,
3981                                                   persistent_go->id);
3982                         /* Save config */
3983                 }
3984
3985                 wpa_msg_global(wpa_s, MSG_INFO,
3986                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3987                                " status=%d"
3988                                " adv_id=%x adv_mac=" MACSTR
3989                                " session=%x mac=" MACSTR
3990                                " persist=%d%s",
3991                                MAC2STR(dev), status,
3992                                adv_id, MAC2STR(adv_mac),
3993                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
3994                 return;
3995         }
3996
3997         if (conncap == P2PS_SETUP_GROUP_OWNER) {
3998                 /*
3999                  * We need to copy the interface name. Simply saving a
4000                  * pointer isn't enough, since if we use pending_interface_name
4001                  * it will be overwritten when the group is added.
4002                  */
4003                 char go_ifname[100];
4004
4005                 go_ifname[0] = '\0';
4006                 if (!go_wpa_s) {
4007                         wpa_s->global->pending_p2ps_group = 1;
4008                         wpa_s->global->pending_p2ps_group_freq = freq;
4009
4010                         if (!wpas_p2p_create_iface(wpa_s))
4011                                 os_memcpy(go_ifname, wpa_s->ifname,
4012                                           sizeof(go_ifname));
4013                         else if (wpa_s->pending_interface_name[0])
4014                                 os_memcpy(go_ifname,
4015                                           wpa_s->pending_interface_name,
4016                                           sizeof(go_ifname));
4017
4018                         if (!go_ifname[0]) {
4019                                 wpas_p2ps_prov_complete(
4020                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4021                                         dev, adv_mac, ses_mac,
4022                                         grp_mac, adv_id, ses_id, 0, 0,
4023                                         NULL, 0, 0, 0, NULL, NULL, 0, 0);
4024                                 return;
4025                         }
4026
4027                         /* If PD Resp complete, start up the GO */
4028                         if (response_done && persistent_go) {
4029                                 wpas_p2p_group_add_persistent(
4030                                         wpa_s, persistent_go,
4031                                         0, 0, freq, 0, 0, NULL,
4032                                         persistent_go->mode ==
4033                                         WPAS_MODE_P2P_GO ?
4034                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4035                                         0, 0);
4036                         } else if (response_done) {
4037                                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0);
4038                         }
4039
4040                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4041                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4042                                           ETH_ALEN);
4043                                 wpa_s->p2ps_method_config_any = 1;
4044                         }
4045                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4046                         os_memcpy(go_ifname, go_wpa_s->ifname,
4047                                   sizeof(go_ifname));
4048
4049                         if (is_zero_ether_addr(grp_mac)) {
4050                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4051                                         "P2P: Setting PIN-1 for ANY");
4052                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4053                                                           "12345670", NULL, 0,
4054                                                           0);
4055                         } else {
4056                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4057                                         "P2P: Setting PIN-1 for " MACSTR,
4058                                         MAC2STR(grp_mac));
4059                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4060                                                           "12345670", NULL, 0,
4061                                                           0);
4062                         }
4063
4064                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4065                         wpa_s->p2ps_method_config_any = 1;
4066                 }
4067
4068                 wpa_msg_global(wpa_s, MSG_INFO,
4069                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4070                                " status=%d conncap=%x"
4071                                " adv_id=%x adv_mac=" MACSTR
4072                                " session=%x mac=" MACSTR
4073                                " dev_passwd_id=%d go=%s%s",
4074                                MAC2STR(dev), status, conncap,
4075                                adv_id, MAC2STR(adv_mac),
4076                                ses_id, MAC2STR(ses_mac),
4077                                passwd_id, go_ifname, feat_cap_str);
4078                 return;
4079         }
4080
4081         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4082                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4083
4084         if (persistent_go && !persistent_go->num_p2p_clients) {
4085                 /* remove empty persistent GO */
4086                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4087         }
4088
4089         if (conncap == P2PS_SETUP_CLIENT) {
4090                 wpa_msg_global(wpa_s, MSG_INFO,
4091                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4092                                " status=%d conncap=%x"
4093                                " adv_id=%x adv_mac=" MACSTR
4094                                " session=%x mac=" MACSTR
4095                                " dev_passwd_id=%d join=" MACSTR "%s",
4096                                MAC2STR(dev), status, conncap,
4097                                adv_id, MAC2STR(adv_mac),
4098                                ses_id, MAC2STR(ses_mac),
4099                                passwd_id, MAC2STR(grp_mac), feat_cap_str);
4100         } else {
4101                 wpa_msg_global(wpa_s, MSG_INFO,
4102                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4103                                " status=%d conncap=%x"
4104                                " adv_id=%x adv_mac=" MACSTR
4105                                " session=%x mac=" MACSTR
4106                                " dev_passwd_id=%d%s",
4107                                MAC2STR(dev), status, conncap,
4108                                adv_id, MAC2STR(adv_mac),
4109                                ses_id, MAC2STR(ses_mac),
4110                                passwd_id, feat_cap_str);
4111         }
4112 }
4113
4114
4115 static int _wpas_p2p_in_progress(void *ctx)
4116 {
4117         struct wpa_supplicant *wpa_s = ctx;
4118         return wpas_p2p_in_progress(wpa_s);
4119 }
4120
4121
4122 static int wpas_prov_disc_resp_cb(void *ctx)
4123 {
4124         struct wpa_supplicant *wpa_s = ctx;
4125         struct wpa_ssid *persistent_go;
4126         unsigned int freq;
4127
4128         if (!wpa_s->global->pending_p2ps_group)
4129                 return 0;
4130
4131         freq = wpa_s->global->pending_p2ps_group_freq;
4132         wpa_s->global->pending_p2ps_group_freq = 0;
4133         wpa_s->global->pending_p2ps_group = 0;
4134
4135         if (wpas_p2p_get_go_group(wpa_s))
4136                 return 0;
4137         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4138
4139         if (persistent_go) {
4140                 wpas_p2p_group_add_persistent(
4141                         wpa_s, persistent_go, 0, 0, 0, 0, 0, NULL,
4142                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4143                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4144         } else {
4145                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0);
4146         }
4147
4148         return 1;
4149 }
4150
4151
4152 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4153                                        unsigned int *len,
4154                                        unsigned int *freq_list)
4155 {
4156         struct wpa_supplicant *wpa_s = ctx;
4157
4158         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4159                                           WPA_IF_P2P_CLIENT, len, freq_list);
4160 }
4161
4162
4163 /**
4164  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4165  * @global: Pointer to global data from wpa_supplicant_init()
4166  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4167  * Returns: 0 on success, -1 on failure
4168  */
4169 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4170 {
4171         struct p2p_config p2p;
4172         int i;
4173
4174         if (wpa_s->conf->p2p_disabled)
4175                 return 0;
4176
4177         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4178                 return 0;
4179
4180         if (global->p2p)
4181                 return 0;
4182
4183         os_memset(&p2p, 0, sizeof(p2p));
4184         p2p.cb_ctx = wpa_s;
4185         p2p.debug_print = wpas_p2p_debug_print;
4186         p2p.p2p_scan = wpas_p2p_scan;
4187         p2p.send_action = wpas_send_action;
4188         p2p.send_action_done = wpas_send_action_done;
4189         p2p.go_neg_completed = wpas_go_neg_completed;
4190         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4191         p2p.dev_found = wpas_dev_found;
4192         p2p.dev_lost = wpas_dev_lost;
4193         p2p.find_stopped = wpas_find_stopped;
4194         p2p.start_listen = wpas_start_listen;
4195         p2p.stop_listen = wpas_stop_listen;
4196         p2p.send_probe_resp = wpas_send_probe_resp;
4197         p2p.sd_request = wpas_sd_request;
4198         p2p.sd_response = wpas_sd_response;
4199         p2p.prov_disc_req = wpas_prov_disc_req;
4200         p2p.prov_disc_resp = wpas_prov_disc_resp;
4201         p2p.prov_disc_fail = wpas_prov_disc_fail;
4202         p2p.invitation_process = wpas_invitation_process;
4203         p2p.invitation_received = wpas_invitation_received;
4204         p2p.invitation_result = wpas_invitation_result;
4205         p2p.get_noa = wpas_get_noa;
4206         p2p.go_connected = wpas_go_connected;
4207         p2p.presence_resp = wpas_presence_resp;
4208         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4209         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4210         p2p.get_persistent_group = wpas_get_persistent_group;
4211         p2p.get_go_info = wpas_get_go_info;
4212         p2p.remove_stale_groups = wpas_remove_stale_groups;
4213         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4214         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4215         p2p.p2ps_group_capability = p2ps_group_capability;
4216         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4217
4218         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4219         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4220         p2p.dev_name = wpa_s->conf->device_name;
4221         p2p.manufacturer = wpa_s->conf->manufacturer;
4222         p2p.model_name = wpa_s->conf->model_name;
4223         p2p.model_number = wpa_s->conf->model_number;
4224         p2p.serial_number = wpa_s->conf->serial_number;
4225         if (wpa_s->wps) {
4226                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4227                 p2p.config_methods = wpa_s->wps->config_methods;
4228         }
4229
4230         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4231                 wpa_printf(MSG_ERROR,
4232                            "P2P: Failed to configure supported channel list");
4233                 return -1;
4234         }
4235
4236         if (wpa_s->conf->p2p_listen_reg_class &&
4237             wpa_s->conf->p2p_listen_channel) {
4238                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4239                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4240                 p2p.channel_forced = 1;
4241         } else {
4242                 /*
4243                  * Pick one of the social channels randomly as the listen
4244                  * channel.
4245                  */
4246                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4247                                                  &p2p.channel) != 0) {
4248                         wpa_printf(MSG_INFO,
4249                                    "P2P: No social channels supported by the driver - do not enable P2P");
4250                         return 0;
4251                 }
4252                 p2p.channel_forced = 0;
4253         }
4254         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4255                    p2p.reg_class, p2p.channel);
4256
4257         if (wpa_s->conf->p2p_oper_reg_class &&
4258             wpa_s->conf->p2p_oper_channel) {
4259                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4260                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4261                 p2p.cfg_op_channel = 1;
4262                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4263                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4264
4265         } else {
4266                 /*
4267                  * Use random operation channel from 2.4 GHz band social
4268                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4269                  * other preference is indicated.
4270                  */
4271                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4272                                                  &p2p.op_channel) != 0) {
4273                         wpa_printf(MSG_ERROR,
4274                                    "P2P: Failed to select random social channel as operation channel");
4275                         return -1;
4276                 }
4277                 p2p.cfg_op_channel = 0;
4278                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4279                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4280         }
4281
4282         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4283                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4284                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4285         }
4286
4287         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4288                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4289                 p2p.country[2] = 0x04;
4290         } else
4291                 os_memcpy(p2p.country, "XX\x04", 3);
4292
4293         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4294                   WPS_DEV_TYPE_LEN);
4295
4296         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4297         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4298                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4299
4300         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4301                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4302
4303         p2p.max_peers = 100;
4304
4305         if (wpa_s->conf->p2p_ssid_postfix) {
4306                 p2p.ssid_postfix_len =
4307                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4308                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4309                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4310                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4311                           p2p.ssid_postfix_len);
4312         }
4313
4314         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4315
4316         p2p.max_listen = wpa_s->max_remain_on_chan;
4317
4318         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4319             wpa_s->conf->p2p_passphrase_len <= 63)
4320                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4321         else
4322                 p2p.passphrase_len = 8;
4323
4324         global->p2p = p2p_init(&p2p);
4325         if (global->p2p == NULL)
4326                 return -1;
4327         global->p2p_init_wpa_s = wpa_s;
4328
4329         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4330                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4331                         continue;
4332                 p2p_add_wps_vendor_extension(
4333                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4334         }
4335
4336         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4337
4338         return 0;
4339 }
4340
4341
4342 /**
4343  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4344  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4345  *
4346  * This function deinitialize per-interface P2P data.
4347  */
4348 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4349 {
4350         if (wpa_s->driver && wpa_s->drv_priv)
4351                 wpa_drv_probe_req_report(wpa_s, 0);
4352
4353         if (wpa_s->go_params) {
4354                 /* Clear any stored provisioning info */
4355                 p2p_clear_provisioning_info(
4356                         wpa_s->global->p2p,
4357                         wpa_s->go_params->peer_device_addr);
4358         }
4359
4360         os_free(wpa_s->go_params);
4361         wpa_s->go_params = NULL;
4362         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4363         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4364         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4365         wpa_s->p2p_long_listen = 0;
4366         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4367         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4368         wpas_p2p_remove_pending_group_interface(wpa_s);
4369         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4370         wpas_p2p_listen_work_done(wpa_s);
4371         if (wpa_s->p2p_send_action_work) {
4372                 os_free(wpa_s->p2p_send_action_work->ctx);
4373                 radio_work_done(wpa_s->p2p_send_action_work);
4374                 wpa_s->p2p_send_action_work = NULL;
4375         }
4376         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4377
4378         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4379         wpa_s->p2p_oob_dev_pw = NULL;
4380
4381         os_free(wpa_s->p2p_group_common_freqs);
4382         wpa_s->p2p_group_common_freqs = NULL;
4383         wpa_s->p2p_group_common_freqs_num = 0;
4384
4385         /* TODO: remove group interface from the driver if this wpa_s instance
4386          * is on top of a P2P group interface */
4387 }
4388
4389
4390 /**
4391  * wpas_p2p_deinit_global - Deinitialize global P2P module
4392  * @global: Pointer to global data from wpa_supplicant_init()
4393  *
4394  * This function deinitializes the global (per device) P2P module.
4395  */
4396 static void wpas_p2p_deinit_global(struct wpa_global *global)
4397 {
4398         struct wpa_supplicant *wpa_s, *tmp;
4399
4400         wpa_s = global->ifaces;
4401
4402         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4403
4404         /* Remove remaining P2P group interfaces */
4405         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4406                 wpa_s = wpa_s->next;
4407         while (wpa_s) {
4408                 tmp = global->ifaces;
4409                 while (tmp &&
4410                        (tmp == wpa_s ||
4411                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4412                         tmp = tmp->next;
4413                 }
4414                 if (tmp == NULL)
4415                         break;
4416                 /* Disconnect from the P2P group and deinit the interface */
4417                 wpas_p2p_disconnect(tmp);
4418         }
4419
4420         /*
4421          * Deinit GO data on any possibly remaining interface (if main
4422          * interface is used as GO).
4423          */
4424         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4425                 if (wpa_s->ap_iface)
4426                         wpas_p2p_group_deinit(wpa_s);
4427         }
4428
4429         p2p_deinit(global->p2p);
4430         global->p2p = NULL;
4431         global->p2p_init_wpa_s = NULL;
4432 }
4433
4434
4435 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4436 {
4437         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4438             wpa_s->conf->p2p_no_group_iface)
4439                 return 0; /* separate interface disabled per configuration */
4440         if (wpa_s->drv_flags &
4441             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4442              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4443                 return 1; /* P2P group requires a new interface in every case
4444                            */
4445         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4446                 return 0; /* driver does not support concurrent operations */
4447         if (wpa_s->global->ifaces->next)
4448                 return 1; /* more that one interface already in use */
4449         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4450                 return 1; /* this interface is already in use */
4451         return 0;
4452 }
4453
4454
4455 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4456                                  const u8 *peer_addr,
4457                                  enum p2p_wps_method wps_method,
4458                                  int go_intent, const u8 *own_interface_addr,
4459                                  unsigned int force_freq, int persistent_group,
4460                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4461 {
4462         if (persistent_group && wpa_s->conf->persistent_reconnect)
4463                 persistent_group = 2;
4464
4465         /*
4466          * Increase GO config timeout if HT40 is used since it takes some time
4467          * to scan channels for coex purposes before the BSS can be started.
4468          */
4469         p2p_set_config_timeout(wpa_s->global->p2p,
4470                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4471
4472         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4473                            go_intent, own_interface_addr, force_freq,
4474                            persistent_group, ssid ? ssid->ssid : NULL,
4475                            ssid ? ssid->ssid_len : 0,
4476                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4477                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4478                            0);
4479 }
4480
4481
4482 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4483                                 const u8 *peer_addr,
4484                                 enum p2p_wps_method wps_method,
4485                                 int go_intent, const u8 *own_interface_addr,
4486                                 unsigned int force_freq, int persistent_group,
4487                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4488 {
4489         if (persistent_group && wpa_s->conf->persistent_reconnect)
4490                 persistent_group = 2;
4491
4492         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4493                              go_intent, own_interface_addr, force_freq,
4494                              persistent_group, ssid ? ssid->ssid : NULL,
4495                              ssid ? ssid->ssid_len : 0, pref_freq,
4496                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4497                              0);
4498 }
4499
4500
4501 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4502 {
4503         wpa_s->p2p_join_scan_count++;
4504         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4505                    wpa_s->p2p_join_scan_count);
4506         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4507                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4508                            " for join operationg - stop join attempt",
4509                            MAC2STR(wpa_s->pending_join_iface_addr));
4510                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4511                 if (wpa_s->p2p_auto_pd) {
4512                         wpa_s->p2p_auto_pd = 0;
4513                         wpa_msg_global(wpa_s, MSG_INFO,
4514                                        P2P_EVENT_PROV_DISC_FAILURE
4515                                        " p2p_dev_addr=" MACSTR " status=N/A",
4516                                        MAC2STR(wpa_s->pending_join_dev_addr));
4517                         return;
4518                 }
4519                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4520                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4521                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4522         }
4523 }
4524
4525
4526 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4527 {
4528         int res;
4529         unsigned int num, i;
4530         struct wpa_used_freq_data *freqs;
4531
4532         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4533                 /* Multiple channels are supported and not all are in use */
4534                 return 0;
4535         }
4536
4537         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4538                           sizeof(struct wpa_used_freq_data));
4539         if (!freqs)
4540                 return 1;
4541
4542         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4543                                         wpa_s->num_multichan_concurrent);
4544
4545         for (i = 0; i < num; i++) {
4546                 if (freqs[i].freq == freq) {
4547                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4548                                    freq);
4549                         res = 0;
4550                         goto exit_free;
4551                 }
4552         }
4553
4554         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4555         res = 1;
4556
4557 exit_free:
4558         os_free(freqs);
4559         return res;
4560 }
4561
4562
4563 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4564                             const u8 *peer_dev_addr)
4565 {
4566         struct wpa_bss *bss;
4567         int updated;
4568
4569         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4570         if (bss == NULL)
4571                 return -1;
4572         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4573                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4574                            "last scan");
4575                 return 0;
4576         }
4577
4578         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4579                                     &bss->last_update);
4580         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4581                    "%ld.%06ld (%supdated in last scan)",
4582                    bss->last_update.sec, bss->last_update.usec,
4583                    updated ? "": "not ");
4584
4585         return updated;
4586 }
4587
4588
4589 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4590                                    struct wpa_scan_results *scan_res)
4591 {
4592         struct wpa_bss *bss = NULL;
4593         int freq;
4594         u8 iface_addr[ETH_ALEN];
4595
4596         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4597
4598         if (wpa_s->global->p2p_disabled)
4599                 return;
4600
4601         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4602                    scan_res ? (int) scan_res->num : -1,
4603                    wpa_s->p2p_auto_join ? "auto_" : "");
4604
4605         if (scan_res)
4606                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4607
4608         if (wpa_s->p2p_auto_pd) {
4609                 int join = wpas_p2p_peer_go(wpa_s,
4610                                             wpa_s->pending_join_dev_addr);
4611                 if (join == 0 &&
4612                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4613                         wpa_s->auto_pd_scan_retry++;
4614                         bss = wpa_bss_get_bssid_latest(
4615                                 wpa_s, wpa_s->pending_join_dev_addr);
4616                         if (bss) {
4617                                 freq = bss->freq;
4618                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4619                                            "the peer " MACSTR " at %d MHz",
4620                                            wpa_s->auto_pd_scan_retry,
4621                                            MAC2STR(wpa_s->
4622                                                    pending_join_dev_addr),
4623                                            freq);
4624                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4625                                 return;
4626                         }
4627                 }
4628
4629                 if (join < 0)
4630                         join = 0;
4631
4632                 wpa_s->p2p_auto_pd = 0;
4633                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4634                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4635                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4636                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4637                                       wpa_s->pending_join_dev_addr, NULL,
4638                                       wpa_s->pending_pd_config_methods, join,
4639                                       0, wpa_s->user_initiated_pd) < 0) {
4640                         wpa_s->p2p_auto_pd = 0;
4641                         wpa_msg_global(wpa_s, MSG_INFO,
4642                                        P2P_EVENT_PROV_DISC_FAILURE
4643                                        " p2p_dev_addr=" MACSTR " status=N/A",
4644                                        MAC2STR(wpa_s->pending_join_dev_addr));
4645                 }
4646                 return;
4647         }
4648
4649         if (wpa_s->p2p_auto_join) {
4650                 int join = wpas_p2p_peer_go(wpa_s,
4651                                             wpa_s->pending_join_dev_addr);
4652                 if (join < 0) {
4653                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4654                                    "running a GO -> use GO Negotiation");
4655                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4656                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4657                                        "reason=peer-not-running-GO");
4658                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4659                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4660                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4661                                          wpa_s->p2p_go_intent,
4662                                          wpa_s->p2p_connect_freq,
4663                                          wpa_s->p2p_persistent_id,
4664                                          wpa_s->p2p_pd_before_go_neg,
4665                                          wpa_s->p2p_go_ht40,
4666                                          wpa_s->p2p_go_vht);
4667                         return;
4668                 }
4669
4670                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4671                            "try to join the group", join ? "" :
4672                            " in older scan");
4673                 if (!join) {
4674                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4675                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4676                         wpa_s->p2p_fallback_to_go_neg = 1;
4677                 }
4678         }
4679
4680         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4681                                  wpa_s->pending_join_iface_addr);
4682         if (freq < 0 &&
4683             p2p_get_interface_addr(wpa_s->global->p2p,
4684                                    wpa_s->pending_join_dev_addr,
4685                                    iface_addr) == 0 &&
4686             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4687             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4688                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4689                            "address for join from " MACSTR " to " MACSTR
4690                            " based on newly discovered P2P peer entry",
4691                            MAC2STR(wpa_s->pending_join_iface_addr),
4692                            MAC2STR(iface_addr));
4693                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4694                           ETH_ALEN);
4695
4696                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4697                                          wpa_s->pending_join_iface_addr);
4698         }
4699         if (freq >= 0) {
4700                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4701                            "from P2P peer table: %d MHz", freq);
4702         }
4703         if (wpa_s->p2p_join_ssid_len) {
4704                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4705                            MACSTR " and SSID %s",
4706                            MAC2STR(wpa_s->pending_join_iface_addr),
4707                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4708                                         wpa_s->p2p_join_ssid_len));
4709                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4710                                   wpa_s->p2p_join_ssid,
4711                                   wpa_s->p2p_join_ssid_len);
4712         }
4713         if (!bss) {
4714                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4715                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4716                 bss = wpa_bss_get_bssid_latest(wpa_s,
4717                                                wpa_s->pending_join_iface_addr);
4718         }
4719         if (bss) {
4720                 u8 dev_addr[ETH_ALEN];
4721
4722                 freq = bss->freq;
4723                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4724                            "from BSS table: %d MHz (SSID %s)", freq,
4725                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4726                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4727                                        dev_addr) == 0 &&
4728                     os_memcmp(wpa_s->pending_join_dev_addr,
4729                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4730                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4731                               ETH_ALEN) != 0) {
4732                         wpa_printf(MSG_DEBUG,
4733                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4734                                    MAC2STR(dev_addr),
4735                                    MAC2STR(wpa_s->pending_join_dev_addr));
4736                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4737                                   ETH_ALEN);
4738                 }
4739         }
4740         if (freq > 0) {
4741                 u16 method;
4742
4743                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4744                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4745                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4746                                        "reason=FREQ_CONFLICT");
4747                         wpas_notify_p2p_group_formation_failure(
4748                                 wpa_s, "FREQ_CONFLICT");
4749                         return;
4750                 }
4751
4752                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4753                            "prior to joining an existing group (GO " MACSTR
4754                            " freq=%u MHz)",
4755                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4756                 wpa_s->pending_pd_before_join = 1;
4757
4758                 switch (wpa_s->pending_join_wps_method) {
4759                 case WPS_PIN_DISPLAY:
4760                         method = WPS_CONFIG_KEYPAD;
4761                         break;
4762                 case WPS_PIN_KEYPAD:
4763                         method = WPS_CONFIG_DISPLAY;
4764                         break;
4765                 case WPS_PBC:
4766                         method = WPS_CONFIG_PUSHBUTTON;
4767                         break;
4768                 case WPS_P2PS:
4769                         method = WPS_CONFIG_P2PS;
4770                         break;
4771                 default:
4772                         method = 0;
4773                         break;
4774                 }
4775
4776                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4777                                                wpa_s->pending_join_dev_addr) ==
4778                      method)) {
4779                         /*
4780                          * We have already performed provision discovery for
4781                          * joining the group. Proceed directly to join
4782                          * operation without duplicated provision discovery. */
4783                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4784                                    "with " MACSTR " already done - proceed to "
4785                                    "join",
4786                                    MAC2STR(wpa_s->pending_join_dev_addr));
4787                         wpa_s->pending_pd_before_join = 0;
4788                         goto start;
4789                 }
4790
4791                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4792                                       wpa_s->pending_join_dev_addr,
4793                                       NULL, method, 1,
4794                                       freq, wpa_s->user_initiated_pd) < 0) {
4795                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4796                                    "Discovery Request before joining an "
4797                                    "existing group");
4798                         wpa_s->pending_pd_before_join = 0;
4799                         goto start;
4800                 }
4801                 return;
4802         }
4803
4804         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4805         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4806         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4807         wpas_p2p_check_join_scan_limit(wpa_s);
4808         return;
4809
4810 start:
4811         /* Start join operation immediately */
4812         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4813 }
4814
4815
4816 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4817                                    const u8 *ssid, size_t ssid_len)
4818 {
4819         int ret;
4820         struct wpa_driver_scan_params params;
4821         struct wpabuf *wps_ie, *ies;
4822         size_t ielen;
4823         int freqs[2] = { 0, 0 };
4824
4825         os_memset(&params, 0, sizeof(params));
4826
4827         /* P2P Wildcard SSID */
4828         params.num_ssids = 1;
4829         if (ssid && ssid_len) {
4830                 params.ssids[0].ssid = ssid;
4831                 params.ssids[0].ssid_len = ssid_len;
4832                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4833                 wpa_s->p2p_join_ssid_len = ssid_len;
4834         } else {
4835                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4836                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4837                 wpa_s->p2p_join_ssid_len = 0;
4838         }
4839
4840         wpa_s->wps->dev.p2p = 1;
4841         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4842                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4843                                         NULL);
4844         if (wps_ie == NULL) {
4845                 wpas_p2p_scan_res_join(wpa_s, NULL);
4846                 return;
4847         }
4848
4849         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4850         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4851         if (ies == NULL) {
4852                 wpabuf_free(wps_ie);
4853                 wpas_p2p_scan_res_join(wpa_s, NULL);
4854                 return;
4855         }
4856         wpabuf_put_buf(ies, wps_ie);
4857         wpabuf_free(wps_ie);
4858
4859         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4860
4861         params.p2p_probe = 1;
4862         params.extra_ies = wpabuf_head(ies);
4863         params.extra_ies_len = wpabuf_len(ies);
4864
4865         if (!freq) {
4866                 int oper_freq;
4867                 /*
4868                  * If freq is not provided, check the operating freq of the GO
4869                  * and use a single channel scan on if possible.
4870                  */
4871                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4872                                               wpa_s->pending_join_iface_addr);
4873                 if (oper_freq > 0)
4874                         freq = oper_freq;
4875         }
4876         if (freq > 0) {
4877                 freqs[0] = freq;
4878                 params.freqs = freqs;
4879         }
4880
4881         /*
4882          * Run a scan to update BSS table and start Provision Discovery once
4883          * the new scan results become available.
4884          */
4885         ret = wpa_drv_scan(wpa_s, &params);
4886         if (!ret) {
4887                 os_get_reltime(&wpa_s->scan_trigger_time);
4888                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4889                 wpa_s->own_scan_requested = 1;
4890         }
4891
4892         wpabuf_free(ies);
4893
4894         if (ret) {
4895                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4896                            "try again later");
4897                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4898                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4899                 wpas_p2p_check_join_scan_limit(wpa_s);
4900         }
4901 }
4902
4903
4904 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4905 {
4906         struct wpa_supplicant *wpa_s = eloop_ctx;
4907         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4908 }
4909
4910
4911 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4912                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4913                          int auto_join, int op_freq,
4914                          const u8 *ssid, size_t ssid_len)
4915 {
4916         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4917                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4918                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4919                    auto_join ? " (auto_join)" : "");
4920         if (ssid && ssid_len) {
4921                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4922                            wpa_ssid_txt(ssid, ssid_len));
4923         }
4924
4925         wpa_s->p2p_auto_pd = 0;
4926         wpa_s->p2p_auto_join = !!auto_join;
4927         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4928         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4929         wpa_s->pending_join_wps_method = wps_method;
4930
4931         /* Make sure we are not running find during connection establishment */
4932         wpas_p2p_stop_find(wpa_s);
4933
4934         wpa_s->p2p_join_scan_count = 0;
4935         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4936         return 0;
4937 }
4938
4939
4940 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4941                                const u8 *ssid, size_t ssid_len)
4942 {
4943         struct wpa_supplicant *group;
4944         struct p2p_go_neg_results res;
4945         struct wpa_bss *bss;
4946
4947         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4948         if (group == NULL)
4949                 return -1;
4950         if (group != wpa_s) {
4951                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4952                           sizeof(group->p2p_pin));
4953                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4954         } else {
4955                 /*
4956                  * Need to mark the current interface for p2p_group_formation
4957                  * when a separate group interface is not used. This is needed
4958                  * to allow p2p_cancel stop a pending p2p_connect-join.
4959                  * wpas_p2p_init_group_interface() addresses this for the case
4960                  * where a separate group interface is used.
4961                  */
4962                 wpa_s->global->p2p_group_formation = wpa_s;
4963         }
4964
4965         group->p2p_in_provisioning = 1;
4966         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4967
4968         os_memset(&res, 0, sizeof(res));
4969         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4970         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4971                   ETH_ALEN);
4972         res.wps_method = wpa_s->pending_join_wps_method;
4973         if (freq && ssid && ssid_len) {
4974                 res.freq = freq;
4975                 res.ssid_len = ssid_len;
4976                 os_memcpy(res.ssid, ssid, ssid_len);
4977         } else {
4978                 bss = wpa_bss_get_bssid_latest(wpa_s,
4979                                                wpa_s->pending_join_iface_addr);
4980                 if (bss) {
4981                         res.freq = bss->freq;
4982                         res.ssid_len = bss->ssid_len;
4983                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4984                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4985                                    bss->freq,
4986                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
4987                 }
4988         }
4989
4990         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4991                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4992                            "starting client");
4993                 wpa_drv_cancel_remain_on_channel(wpa_s);
4994                 wpa_s->off_channel_freq = 0;
4995                 wpa_s->roc_waiting_drv_freq = 0;
4996         }
4997         wpas_start_wps_enrollee(group, &res);
4998
4999         /*
5000          * Allow a longer timeout for join-a-running-group than normal 15
5001          * second group formation timeout since the GO may not have authorized
5002          * our connection yet.
5003          */
5004         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5005         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5006                                wpa_s, NULL);
5007
5008         return 0;
5009 }
5010
5011
5012 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5013                                 int *force_freq, int *pref_freq, int go,
5014                                 unsigned int *pref_freq_list,
5015                                 unsigned int *num_pref_freq)
5016 {
5017         struct wpa_used_freq_data *freqs;
5018         int res, best_freq, num_unused;
5019         unsigned int freq_in_use = 0, num, i, max_pref_freq;
5020
5021         max_pref_freq = *num_pref_freq;
5022         *num_pref_freq = 0;
5023
5024         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5025                           sizeof(struct wpa_used_freq_data));
5026         if (!freqs)
5027                 return -1;
5028
5029         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5030                                         wpa_s->num_multichan_concurrent);
5031
5032         /*
5033          * It is possible that the total number of used frequencies is bigger
5034          * than the number of frequencies used for P2P, so get the system wide
5035          * number of unused frequencies.
5036          */
5037         num_unused = wpas_p2p_num_unused_channels(wpa_s);
5038
5039         wpa_printf(MSG_DEBUG,
5040                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5041                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
5042
5043         if (freq > 0) {
5044                 int ret;
5045                 if (go)
5046                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5047                 else
5048                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5049                 if (!ret) {
5050                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5051                             ieee80211_is_dfs(freq)) {
5052                                 /*
5053                                  * If freq is a DFS channel and DFS is offloaded
5054                                  * to the driver, allow P2P GO to use it.
5055                                  */
5056                                 wpa_printf(MSG_DEBUG,
5057                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5058                                            freq);
5059                         } else {
5060                                 wpa_printf(MSG_DEBUG,
5061                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5062                                            freq);
5063                                 res = -3;
5064                                 goto exit_free;
5065                         }
5066                 }
5067
5068                 for (i = 0; i < num; i++) {
5069                         if (freqs[i].freq == freq)
5070                                 freq_in_use = 1;
5071                 }
5072
5073                 if (num_unused <= 0 && !freq_in_use) {
5074                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5075                                    freq);
5076                         res = -2;
5077                         goto exit_free;
5078                 }
5079                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5080                            "requested channel (%u MHz)", freq);
5081                 *force_freq = freq;
5082                 goto exit_ok;
5083         }
5084
5085         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5086
5087         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5088                 enum wpa_driver_if_type iface_type;
5089
5090                 if (go)
5091                         iface_type = WPA_IF_P2P_GO;
5092                 else
5093                         iface_type = WPA_IF_P2P_CLIENT;
5094
5095                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5096                            best_freq, go);
5097
5098                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5099                                                  &max_pref_freq,
5100                                                  pref_freq_list);
5101                 if (!res && max_pref_freq > 0) {
5102                         *num_pref_freq = max_pref_freq;
5103                         i = 0;
5104                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5105                                                         pref_freq_list[i]) &&
5106                                i < *num_pref_freq) {
5107                                 wpa_printf(MSG_DEBUG,
5108                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5109                                            i, pref_freq_list[i]);
5110                                 i++;
5111                         }
5112                         if (i != *num_pref_freq) {
5113                                 best_freq = pref_freq_list[i];
5114                                 wpa_printf(MSG_DEBUG,
5115                                            "P2P: Using preferred_freq_list[%d]=%d",
5116                                            i, best_freq);
5117                         } else {
5118                                 wpa_printf(MSG_DEBUG,
5119                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5120                                 *num_pref_freq = 0;
5121                         }
5122                 } else {
5123                         wpa_printf(MSG_DEBUG,
5124                                    "P2P: No preferred frequency list available");
5125                 }
5126         }
5127
5128         /* We have a candidate frequency to use */
5129         if (best_freq > 0) {
5130                 if (*pref_freq == 0 && num_unused > 0) {
5131                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5132                                    best_freq);
5133                         *pref_freq = best_freq;
5134                 } else {
5135                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5136                                    best_freq);
5137                         *force_freq = best_freq;
5138                 }
5139         } else if (num_unused > 0) {
5140                 wpa_printf(MSG_DEBUG,
5141                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5142                 *force_freq = 0;
5143         } else {
5144                 wpa_printf(MSG_DEBUG,
5145                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5146                 res = -2;
5147                 goto exit_free;
5148         }
5149
5150 exit_ok:
5151         res = 0;
5152 exit_free:
5153         os_free(freqs);
5154         return res;
5155 }
5156
5157
5158 /**
5159  * wpas_p2p_connect - Request P2P Group Formation to be started
5160  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5161  * @peer_addr: Address of the peer P2P Device
5162  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5163  * @persistent_group: Whether to create a persistent group
5164  * @auto_join: Whether to select join vs. GO Negotiation automatically
5165  * @join: Whether to join an existing group (as a client) instead of starting
5166  *      Group Owner negotiation; @peer_addr is BSSID in that case
5167  * @auth: Whether to only authorize the connection instead of doing that and
5168  *      initiating Group Owner negotiation
5169  * @go_intent: GO Intent or -1 to use default
5170  * @freq: Frequency for the group or 0 for auto-selection
5171  * @persistent_id: Persistent group credentials to use for forcing GO
5172  *      parameters or -1 to generate new values (SSID/passphrase)
5173  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5174  *      interoperability workaround when initiating group formation
5175  * @ht40: Start GO with 40 MHz channel width
5176  * @vht:  Start GO with VHT support
5177  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5178  *      failure, -2 on failure due to channel not currently available,
5179  *      -3 if forced channel is not supported
5180  */
5181 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5182                      const char *pin, enum p2p_wps_method wps_method,
5183                      int persistent_group, int auto_join, int join, int auth,
5184                      int go_intent, int freq, int persistent_id, int pd,
5185                      int ht40, int vht)
5186 {
5187         int force_freq = 0, pref_freq = 0;
5188         int ret = 0, res;
5189         enum wpa_driver_if_type iftype;
5190         const u8 *if_addr;
5191         struct wpa_ssid *ssid = NULL;
5192         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5193
5194         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5195                 return -1;
5196
5197         if (persistent_id >= 0) {
5198                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5199                 if (ssid == NULL || ssid->disabled != 2 ||
5200                     ssid->mode != WPAS_MODE_P2P_GO)
5201                         return -1;
5202         }
5203
5204         os_free(wpa_s->global->add_psk);
5205         wpa_s->global->add_psk = NULL;
5206
5207         wpa_s->global->p2p_fail_on_wps_complete = 0;
5208         wpa_s->global->pending_p2ps_group = 0;
5209         wpa_s->global->pending_p2ps_group_freq = 0;
5210         wpa_s->p2ps_method_config_any = 0;
5211
5212         if (go_intent < 0)
5213                 go_intent = wpa_s->conf->p2p_go_intent;
5214
5215         if (!auth)
5216                 wpa_s->p2p_long_listen = 0;
5217
5218         wpa_s->p2p_wps_method = wps_method;
5219         wpa_s->p2p_persistent_group = !!persistent_group;
5220         wpa_s->p2p_persistent_id = persistent_id;
5221         wpa_s->p2p_go_intent = go_intent;
5222         wpa_s->p2p_connect_freq = freq;
5223         wpa_s->p2p_fallback_to_go_neg = 0;
5224         wpa_s->p2p_pd_before_go_neg = !!pd;
5225         wpa_s->p2p_go_ht40 = !!ht40;
5226         wpa_s->p2p_go_vht = !!vht;
5227
5228         if (pin)
5229                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5230         else if (wps_method == WPS_PIN_DISPLAY) {
5231                 ret = wps_generate_pin();
5232                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5233                                   "%08d", ret);
5234                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5235                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5236                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5237                            wpa_s->p2p_pin);
5238         } else
5239                 wpa_s->p2p_pin[0] = '\0';
5240
5241         if (join || auto_join) {
5242                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5243                 if (auth) {
5244                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5245                                    "connect a running group from " MACSTR,
5246                                    MAC2STR(peer_addr));
5247                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5248                         return ret;
5249                 }
5250                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5251                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5252                                            iface_addr) < 0) {
5253                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5254                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5255                                          dev_addr);
5256                 }
5257                 if (auto_join) {
5258                         os_get_reltime(&wpa_s->p2p_auto_started);
5259                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5260                                    "%ld.%06ld",
5261                                    wpa_s->p2p_auto_started.sec,
5262                                    wpa_s->p2p_auto_started.usec);
5263                 }
5264                 wpa_s->user_initiated_pd = 1;
5265                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5266                                   auto_join, freq, NULL, 0) < 0)
5267                         return -1;
5268                 return ret;
5269         }
5270
5271         size = P2P_MAX_PREF_CHANNELS;
5272         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5273                                    go_intent == 15, pref_freq_list, &size);
5274         if (res)
5275                 return res;
5276         wpas_p2p_set_own_freq_preference(wpa_s,
5277                                          force_freq ? force_freq : pref_freq);
5278
5279         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5280
5281         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5282
5283         if (wpa_s->create_p2p_iface) {
5284                 /* Prepare to add a new interface for the group */
5285                 iftype = WPA_IF_P2P_GROUP;
5286                 if (go_intent == 15)
5287                         iftype = WPA_IF_P2P_GO;
5288                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5289                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5290                                    "interface for the group");
5291                         return -1;
5292                 }
5293
5294                 if_addr = wpa_s->pending_interface_addr;
5295         } else {
5296                 if_addr = wpa_s->own_addr;
5297                 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5298         }
5299
5300         if (auth) {
5301                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5302                                          go_intent, if_addr,
5303                                          force_freq, persistent_group, ssid,
5304                                          pref_freq) < 0)
5305                         return -1;
5306                 return ret;
5307         }
5308
5309         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5310                                   go_intent, if_addr, force_freq,
5311                                   persistent_group, ssid, pref_freq) < 0) {
5312                 if (wpa_s->create_p2p_iface)
5313                         wpas_p2p_remove_pending_group_interface(wpa_s);
5314                 return -1;
5315         }
5316         return ret;
5317 }
5318
5319
5320 /**
5321  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5322  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5323  * @freq: Frequency of the channel in MHz
5324  * @duration: Duration of the stay on the channel in milliseconds
5325  *
5326  * This callback is called when the driver indicates that it has started the
5327  * requested remain-on-channel duration.
5328  */
5329 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5330                                    unsigned int freq, unsigned int duration)
5331 {
5332         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5333                 return;
5334         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)",
5335                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5336                    wpa_s->roc_waiting_drv_freq, freq, duration);
5337         if (wpa_s->off_channel_freq &&
5338             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5339                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5340                               wpa_s->pending_listen_duration);
5341                 wpa_s->pending_listen_freq = 0;
5342         } else {
5343                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5344                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5345                            freq, duration);
5346         }
5347 }
5348
5349
5350 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5351 {
5352         /* Limit maximum Listen state time based on driver limitation. */
5353         if (timeout > wpa_s->max_remain_on_chan)
5354                 timeout = wpa_s->max_remain_on_chan;
5355
5356         return p2p_listen(wpa_s->global->p2p, timeout);
5357 }
5358
5359
5360 /**
5361  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5362  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5363  * @freq: Frequency of the channel in MHz
5364  *
5365  * This callback is called when the driver indicates that a remain-on-channel
5366  * operation has been completed, i.e., the duration on the requested channel
5367  * has timed out.
5368  */
5369 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5370                                           unsigned int freq)
5371 {
5372         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5373                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5374                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5375         wpas_p2p_listen_work_done(wpa_s);
5376         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5377                 return;
5378         if (wpa_s->p2p_long_listen > 0)
5379                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5380         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5381                 return; /* P2P module started a new operation */
5382         if (offchannel_pending_action_tx(wpa_s))
5383                 return;
5384         if (wpa_s->p2p_long_listen > 0) {
5385                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5386                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5387         } else {
5388                 /*
5389                  * When listen duration is over, stop listen & update p2p_state
5390                  * to IDLE.
5391                  */
5392                 p2p_stop_listen(wpa_s->global->p2p);
5393         }
5394 }
5395
5396
5397 /**
5398  * wpas_p2p_group_remove - Remove a P2P group
5399  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5400  * @ifname: Network interface name of the group interface or "*" to remove all
5401  *      groups
5402  * Returns: 0 on success, -1 on failure
5403  *
5404  * This function is used to remove a P2P group. This can be used to disconnect
5405  * from a group in which the local end is a P2P Client or to end a P2P Group in
5406  * case the local end is the Group Owner. If a virtual network interface was
5407  * created for this group, that interface will be removed. Otherwise, only the
5408  * configured P2P group network will be removed from the interface.
5409  */
5410 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5411 {
5412         struct wpa_global *global = wpa_s->global;
5413         struct wpa_supplicant *calling_wpa_s = wpa_s;
5414
5415         if (os_strcmp(ifname, "*") == 0) {
5416                 struct wpa_supplicant *prev;
5417                 wpa_s = global->ifaces;
5418                 while (wpa_s) {
5419                         prev = wpa_s;
5420                         wpa_s = wpa_s->next;
5421                         if (prev->p2p_group_interface !=
5422                             NOT_P2P_GROUP_INTERFACE ||
5423                             (prev->current_ssid &&
5424                              prev->current_ssid->p2p_group))
5425                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5426                 }
5427                 return 0;
5428         }
5429
5430         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5431                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5432                         break;
5433         }
5434
5435         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5436 }
5437
5438
5439 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5440 {
5441         unsigned int r;
5442
5443         if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5444                 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5445                 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5446                 int res;
5447
5448                 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5449                                                  &size, pref_freq_list);
5450                 if (!res && size > 0) {
5451                         i = 0;
5452                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5453                                                         pref_freq_list[i]) &&
5454                                i < size) {
5455                                 wpa_printf(MSG_DEBUG,
5456                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5457                                            i, pref_freq_list[i]);
5458                                 i++;
5459                         }
5460                         if (i != size) {
5461                                 freq = pref_freq_list[i];
5462                                 wpa_printf(MSG_DEBUG,
5463                                            "P2P: Using preferred_freq_list[%d]=%d",
5464                                            i, freq);
5465                         } else {
5466                                 wpa_printf(MSG_DEBUG,
5467                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5468                         }
5469                 } else {
5470                         wpa_printf(MSG_DEBUG,
5471                                    "P2P: No preferred frequency list available");
5472                 }
5473         }
5474
5475         if (freq == 2) {
5476                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5477                            "band");
5478                 if (wpa_s->best_24_freq > 0 &&
5479                     p2p_supported_freq_go(wpa_s->global->p2p,
5480                                           wpa_s->best_24_freq)) {
5481                         freq = wpa_s->best_24_freq;
5482                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5483                                    "channel: %d MHz", freq);
5484                 } else {
5485                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5486                                 return -1;
5487                         freq = 2412 + (r % 3) * 25;
5488                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5489                                    "channel: %d MHz", freq);
5490                 }
5491         }
5492
5493         if (freq == 5) {
5494                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5495                            "band");
5496                 if (wpa_s->best_5_freq > 0 &&
5497                     p2p_supported_freq_go(wpa_s->global->p2p,
5498                                        wpa_s->best_5_freq)) {
5499                         freq = wpa_s->best_5_freq;
5500                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5501                                    "channel: %d MHz", freq);
5502                 } else {
5503                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5504                                 return -1;
5505                         freq = 5180 + (r % 4) * 20;
5506                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5507                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5508                                            "5 GHz channel for P2P group");
5509                                 return -1;
5510                         }
5511                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5512                                    "channel: %d MHz", freq);
5513                 }
5514         }
5515
5516         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5517                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5518                     ieee80211_is_dfs(freq)) {
5519                         /*
5520                          * If freq is a DFS channel and DFS is offloaded to the
5521                          * driver, allow P2P GO to use it.
5522                          */
5523                         wpa_printf(MSG_DEBUG, "P2P: "
5524                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5525                                    __func__, freq);
5526                         return freq;
5527                 }
5528                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5529                            "(%u MHz) is not supported for P2P uses",
5530                            freq);
5531                 return -1;
5532         }
5533
5534         return freq;
5535 }
5536
5537
5538 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5539                                       const struct p2p_channels *channels,
5540                                       int freq)
5541 {
5542         if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5543             p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5544             freq_included(wpa_s, channels, freq))
5545                 return 1;
5546         return 0;
5547 }
5548
5549
5550 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5551                                             struct p2p_go_neg_results *params,
5552                                             const struct p2p_channels *channels)
5553 {
5554         unsigned int i, r;
5555
5556         /* first try some random selection of the social channels */
5557         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5558                 return;
5559
5560         for (i = 0; i < 3; i++) {
5561                 params->freq = 2412 + ((r + i) % 3) * 25;
5562                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5563                         goto out;
5564         }
5565
5566         /* try all other channels in operating class 81 */
5567         for (i = 0; i < 11; i++) {
5568                 params->freq = 2412 + i * 5;
5569
5570                 /* skip social channels; covered in the previous loop */
5571                 if (params->freq == 2412 ||
5572                     params->freq == 2437 ||
5573                     params->freq == 2462)
5574                         continue;
5575
5576                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5577                         goto out;
5578         }
5579
5580         /* try all channels in operating class 115 */
5581         for (i = 0; i < 4; i++) {
5582                 params->freq = 5180 + i * 20;
5583                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5584                     freq_included(wpa_s, channels, params->freq) &&
5585                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5586                         goto out;
5587         }
5588
5589         /* try all channels in operating class 124 */
5590         for (i = 0; i < 4; i++) {
5591                 params->freq = 5745 + i * 20;
5592                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5593                     freq_included(wpa_s, channels, params->freq) &&
5594                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5595                         goto out;
5596         }
5597
5598         /* try social channel class 180 channel 2 */
5599         params->freq = 58320 + 1 * 2160;
5600         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5601             freq_included(wpa_s, channels, params->freq) &&
5602             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5603                 goto out;
5604
5605         /* try all channels in reg. class 180 */
5606         for (i = 0; i < 4; i++) {
5607                 params->freq = 58320 + i * 2160;
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         params->freq = 0;
5615         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5616         return;
5617 out:
5618         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5619                    params->freq);
5620 }
5621
5622
5623 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5624                                    struct p2p_go_neg_results *params,
5625                                    int freq, int ht40, int vht,
5626                                    const struct p2p_channels *channels)
5627 {
5628         struct wpa_used_freq_data *freqs;
5629         unsigned int cand;
5630         unsigned int num, i;
5631         int ignore_no_freqs = 0;
5632
5633         os_memset(params, 0, sizeof(*params));
5634         params->role_go = 1;
5635         params->ht40 = ht40;
5636         params->vht = vht;
5637
5638         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5639                           sizeof(struct wpa_used_freq_data));
5640         if (!freqs)
5641                 return -1;
5642
5643         num = get_shared_radio_freqs_data(wpa_s, freqs,
5644                                           wpa_s->num_multichan_concurrent);
5645
5646         if (wpa_s->current_ssid &&
5647             wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5648             wpa_s->wpa_state == WPA_COMPLETED) {
5649                 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5650                            __func__);
5651
5652                 /*
5653                  * If the frequency selection is done for an active P2P GO that
5654                  * is not sharing a frequency, allow to select a new frequency
5655                  * even if there are no unused frequencies as we are about to
5656                  * move the P2P GO so its frequency can be re-used.
5657                  */
5658                 for (i = 0; i < num; i++) {
5659                         if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5660                             freqs[i].flags == 0) {
5661                                 ignore_no_freqs = 1;
5662                                 break;
5663                         }
5664                 }
5665         }
5666
5667         /* try using the forced freq */
5668         if (freq) {
5669                 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) {
5670                         wpa_printf(MSG_DEBUG,
5671                                    "P2P: Forced GO freq %d MHz not accepted",
5672                                    freq);
5673                         goto fail;
5674                 }
5675
5676                 for (i = 0; i < num; i++) {
5677                         if (freqs[i].freq == freq) {
5678                                 wpa_printf(MSG_DEBUG,
5679                                            "P2P: forced freq (%d MHz) is also shared",
5680                                            freq);
5681                                 params->freq = freq;
5682                                 goto success;
5683                         }
5684                 }
5685
5686                 if (!ignore_no_freqs &&
5687                     wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5688                         wpa_printf(MSG_DEBUG,
5689                                    "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5690                                    freq);
5691                         goto fail;
5692                 }
5693
5694                 wpa_printf(MSG_DEBUG,
5695                            "P2P: force GO freq (%d MHz) on a free channel",
5696                            freq);
5697                 params->freq = freq;
5698                 goto success;
5699         }
5700
5701         /* consider using one of the shared frequencies */
5702         if (num) {
5703                 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5704                 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5705                         wpa_printf(MSG_DEBUG,
5706                                    "P2P: Use shared freq (%d MHz) for GO",
5707                                    freq);
5708                         params->freq = cand;
5709                         goto success;
5710                 }
5711
5712                 /* try using one of the shared freqs */
5713                 for (i = 0; i < num; i++) {
5714                         if (wpas_p2p_supported_freq_go(wpa_s, channels,
5715                                                        freqs[i].freq)) {
5716                                 wpa_printf(MSG_DEBUG,
5717                                            "P2P: Use shared freq (%d MHz) for GO",
5718                                            freq);
5719                                 params->freq = freqs[i].freq;
5720                                 goto success;
5721                         }
5722                 }
5723         }
5724
5725         if (!ignore_no_freqs &&
5726             wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5727                 wpa_printf(MSG_DEBUG,
5728                            "P2P: Cannot force GO on any of the channels we are already using");
5729                 goto fail;
5730         }
5731
5732         /* try using the setting from the configuration file */
5733         if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5734             wpa_s->conf->p2p_oper_channel >= 1 &&
5735             wpa_s->conf->p2p_oper_channel <= 11 &&
5736             wpas_p2p_supported_freq_go(
5737                     wpa_s, channels,
5738                     2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5739                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5740                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5741                            "frequency %d MHz", params->freq);
5742                 goto success;
5743         }
5744
5745         if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5746              wpa_s->conf->p2p_oper_reg_class == 116 ||
5747              wpa_s->conf->p2p_oper_reg_class == 117 ||
5748              wpa_s->conf->p2p_oper_reg_class == 124 ||
5749              wpa_s->conf->p2p_oper_reg_class == 125 ||
5750              wpa_s->conf->p2p_oper_reg_class == 126 ||
5751              wpa_s->conf->p2p_oper_reg_class == 127) &&
5752             wpas_p2p_supported_freq_go(wpa_s, channels,
5753                                        5000 +
5754                                        5 * wpa_s->conf->p2p_oper_channel)) {
5755                 params->freq = 5000 + 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         /* Try using best channels */
5762         if (wpa_s->conf->p2p_oper_channel == 0 &&
5763             wpa_s->best_overall_freq > 0 &&
5764             wpas_p2p_supported_freq_go(wpa_s, channels,
5765                                        wpa_s->best_overall_freq)) {
5766                 params->freq = wpa_s->best_overall_freq;
5767                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5768                            "channel %d MHz", params->freq);
5769                 goto success;
5770         }
5771
5772         if (wpa_s->conf->p2p_oper_channel == 0 &&
5773             wpa_s->best_24_freq > 0 &&
5774             wpas_p2p_supported_freq_go(wpa_s, channels,
5775                                        wpa_s->best_24_freq)) {
5776                 params->freq = wpa_s->best_24_freq;
5777                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5778                            "channel %d MHz", params->freq);
5779                 goto success;
5780         }
5781
5782         if (wpa_s->conf->p2p_oper_channel == 0 &&
5783             wpa_s->best_5_freq > 0 &&
5784             wpas_p2p_supported_freq_go(wpa_s, channels,
5785                                        wpa_s->best_5_freq)) {
5786                 params->freq = wpa_s->best_5_freq;
5787                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5788                            "channel %d MHz", params->freq);
5789                 goto success;
5790         }
5791
5792         /* try using preferred channels */
5793         cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
5794         if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5795                 params->freq = cand;
5796                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5797                            "channels", params->freq);
5798                 goto success;
5799         }
5800
5801         /* Try using one of the group common freqs */
5802         if (wpa_s->p2p_group_common_freqs) {
5803                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
5804                         cand = wpa_s->p2p_group_common_freqs[i];
5805                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5806                                 params->freq = cand;
5807                                 wpa_printf(MSG_DEBUG,
5808                                            "P2P: Use freq %d MHz common with the peer",
5809                                            params->freq);
5810                                 goto success;
5811                         }
5812                 }
5813         }
5814
5815         /* no preference, select some channel */
5816         wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
5817
5818         if (params->freq == 0) {
5819                 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
5820                 goto fail;
5821         }
5822
5823 success:
5824         os_free(freqs);
5825         return 0;
5826 fail:
5827         os_free(freqs);
5828         return -1;
5829 }
5830
5831
5832 static struct wpa_supplicant *
5833 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5834                          int go)
5835 {
5836         struct wpa_supplicant *group_wpa_s;
5837
5838         if (!wpas_p2p_create_iface(wpa_s)) {
5839                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5840                         "operations");
5841                 wpa_s->p2p_first_connection_timeout = 0;
5842                 return wpa_s;
5843         }
5844
5845         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5846                                          WPA_IF_P2P_CLIENT) < 0) {
5847                 wpa_msg_global(wpa_s, MSG_ERROR,
5848                                "P2P: Failed to add group interface");
5849                 return NULL;
5850         }
5851         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5852         if (group_wpa_s == NULL) {
5853                 wpa_msg_global(wpa_s, MSG_ERROR,
5854                                "P2P: Failed to initialize group interface");
5855                 wpas_p2p_remove_pending_group_interface(wpa_s);
5856                 return NULL;
5857         }
5858
5859         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5860                 group_wpa_s->ifname);
5861         group_wpa_s->p2p_first_connection_timeout = 0;
5862         return group_wpa_s;
5863 }
5864
5865
5866 /**
5867  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5868  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5869  * @persistent_group: Whether to create a persistent group
5870  * @freq: Frequency for the group or 0 to indicate no hardcoding
5871  * @ht40: Start GO with 40 MHz channel width
5872  * @vht:  Start GO with VHT support
5873  * Returns: 0 on success, -1 on failure
5874  *
5875  * This function creates a new P2P group with the local end as the Group Owner,
5876  * i.e., without using Group Owner Negotiation.
5877  */
5878 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5879                        int freq, int ht40, int vht)
5880 {
5881         struct p2p_go_neg_results params;
5882
5883         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5884                 return -1;
5885
5886         os_free(wpa_s->global->add_psk);
5887         wpa_s->global->add_psk = NULL;
5888
5889         /* Make sure we are not running find during connection establishment */
5890         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5891         wpas_p2p_stop_find_oper(wpa_s);
5892
5893         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5894         if (freq < 0)
5895                 return -1;
5896
5897         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5898                 return -1;
5899         if (params.freq &&
5900             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5901                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5902                     ieee80211_is_dfs(params.freq)) {
5903                         /*
5904                          * If freq is a DFS channel and DFS is offloaded to the
5905                          * driver, allow P2P GO to use it.
5906                          */
5907                         wpa_printf(MSG_DEBUG,
5908                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
5909                                 __func__, params.freq);
5910                 } else {
5911                         wpa_printf(MSG_DEBUG,
5912                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
5913                                    params.freq);
5914                         return -1;
5915                 }
5916         }
5917         p2p_go_params(wpa_s->global->p2p, &params);
5918         params.persistent_group = persistent_group;
5919
5920         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5921         if (wpa_s == NULL)
5922                 return -1;
5923         wpas_start_wps_go(wpa_s, &params, 0);
5924
5925         return 0;
5926 }
5927
5928
5929 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5930                                  struct wpa_ssid *params, int addr_allocated,
5931                                  int freq, int force_scan)
5932 {
5933         struct wpa_ssid *ssid;
5934
5935         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5936         if (wpa_s == NULL)
5937                 return -1;
5938         if (force_scan)
5939                 os_get_reltime(&wpa_s->scan_min_time);
5940         wpa_s->p2p_last_4way_hs_fail = NULL;
5941
5942         wpa_supplicant_ap_deinit(wpa_s);
5943
5944         ssid = wpa_config_add_network(wpa_s->conf);
5945         if (ssid == NULL)
5946                 return -1;
5947         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5948         wpa_config_set_network_defaults(ssid);
5949         ssid->temporary = 1;
5950         ssid->proto = WPA_PROTO_RSN;
5951         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5952         ssid->group_cipher = WPA_CIPHER_CCMP;
5953         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5954         ssid->ssid = os_malloc(params->ssid_len);
5955         if (ssid->ssid == NULL) {
5956                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5957                 return -1;
5958         }
5959         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5960         ssid->ssid_len = params->ssid_len;
5961         ssid->p2p_group = 1;
5962         ssid->export_keys = 1;
5963         if (params->psk_set) {
5964                 os_memcpy(ssid->psk, params->psk, 32);
5965                 ssid->psk_set = 1;
5966         }
5967         if (params->passphrase)
5968                 ssid->passphrase = os_strdup(params->passphrase);
5969
5970         wpa_s->show_group_started = 1;
5971         wpa_s->p2p_in_invitation = 1;
5972         wpa_s->p2p_invite_go_freq = freq;
5973
5974         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5975                              NULL);
5976         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5977                                wpas_p2p_group_formation_timeout,
5978                                wpa_s->parent, NULL);
5979         wpa_supplicant_select_network(wpa_s, ssid);
5980
5981         return 0;
5982 }
5983
5984
5985 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5986                                   struct wpa_ssid *ssid, int addr_allocated,
5987                                   int force_freq, int neg_freq, int ht40,
5988                                   int vht, const struct p2p_channels *channels,
5989                                   int connection_timeout, int force_scan)
5990 {
5991         struct p2p_go_neg_results params;
5992         int go = 0, freq;
5993
5994         if (ssid->disabled != 2 || ssid->ssid == NULL)
5995                 return -1;
5996
5997         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5998             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5999                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6000                            "already running");
6001                 if (go == 0 &&
6002                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6003                                          wpa_s->parent, NULL)) {
6004                         /*
6005                          * This can happen if Invitation Response frame was lost
6006                          * and the peer (GO of a persistent group) tries to
6007                          * invite us again. Reschedule the timeout to avoid
6008                          * terminating the wait for the connection too early
6009                          * since we now know that the peer is still trying to
6010                          * invite us instead of having already started the GO.
6011                          */
6012                         wpa_printf(MSG_DEBUG,
6013                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6014                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6015                                                wpas_p2p_group_formation_timeout,
6016                                                wpa_s->parent, NULL);
6017                 }
6018                 return 0;
6019         }
6020
6021         os_free(wpa_s->global->add_psk);
6022         wpa_s->global->add_psk = NULL;
6023
6024         /* Make sure we are not running find during connection establishment */
6025         wpas_p2p_stop_find_oper(wpa_s);
6026
6027         wpa_s->p2p_fallback_to_go_neg = 0;
6028
6029         if (ssid->mode == WPAS_MODE_P2P_GO) {
6030                 if (force_freq > 0) {
6031                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6032                         if (freq < 0)
6033                                 return -1;
6034                 } else {
6035                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6036                         if (freq < 0 ||
6037                             (freq > 0 && !freq_included(wpa_s, channels, freq)))
6038                                 freq = 0;
6039                 }
6040         } else if (ssid->mode == WPAS_MODE_INFRA) {
6041                 freq = neg_freq;
6042                 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6043                         struct os_reltime now;
6044                         struct wpa_bss *bss =
6045                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6046
6047                         os_get_reltime(&now);
6048                         if (bss &&
6049                             !os_reltime_expired(&now, &bss->last_update, 5) &&
6050                             freq_included(wpa_s, channels, bss->freq))
6051                                 freq = bss->freq;
6052                         else
6053                                 freq = 0;
6054                 }
6055
6056                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6057                                              force_scan);
6058         } else {
6059                 return -1;
6060         }
6061
6062         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
6063                 return -1;
6064
6065         params.role_go = 1;
6066         params.psk_set = ssid->psk_set;
6067         if (params.psk_set)
6068                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6069         if (ssid->passphrase) {
6070                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6071                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6072                                    "persistent group");
6073                         return -1;
6074                 }
6075                 os_strlcpy(params.passphrase, ssid->passphrase,
6076                            sizeof(params.passphrase));
6077         }
6078         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6079         params.ssid_len = ssid->ssid_len;
6080         params.persistent_group = 1;
6081
6082         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6083         if (wpa_s == NULL)
6084                 return -1;
6085
6086         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6087
6088         wpa_s->p2p_first_connection_timeout = connection_timeout;
6089         wpas_start_wps_go(wpa_s, &params, 0);
6090
6091         return 0;
6092 }
6093
6094
6095 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6096                                struct wpabuf *proberesp_ies)
6097 {
6098         struct wpa_supplicant *wpa_s = ctx;
6099         if (wpa_s->ap_iface) {
6100                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6101                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6102                         wpabuf_free(beacon_ies);
6103                         wpabuf_free(proberesp_ies);
6104                         return;
6105                 }
6106                 if (beacon_ies) {
6107                         wpabuf_free(hapd->p2p_beacon_ie);
6108                         hapd->p2p_beacon_ie = beacon_ies;
6109                 }
6110                 wpabuf_free(hapd->p2p_probe_resp_ie);
6111                 hapd->p2p_probe_resp_ie = proberesp_ies;
6112         } else {
6113                 wpabuf_free(beacon_ies);
6114                 wpabuf_free(proberesp_ies);
6115         }
6116         wpa_supplicant_ap_update_beacon(wpa_s);
6117 }
6118
6119
6120 static void wpas_p2p_idle_update(void *ctx, int idle)
6121 {
6122         struct wpa_supplicant *wpa_s = ctx;
6123         if (!wpa_s->ap_iface)
6124                 return;
6125         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6126         if (idle) {
6127                 if (wpa_s->global->p2p_fail_on_wps_complete &&
6128                     wpa_s->p2p_in_provisioning) {
6129                         wpas_p2p_grpform_fail_after_wps(wpa_s);
6130                         return;
6131                 }
6132                 wpas_p2p_set_group_idle_timeout(wpa_s);
6133         } else
6134                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6135 }
6136
6137
6138 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6139                                        struct wpa_ssid *ssid)
6140 {
6141         struct p2p_group *group;
6142         struct p2p_group_config *cfg;
6143
6144         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6145                 return NULL;
6146
6147         cfg = os_zalloc(sizeof(*cfg));
6148         if (cfg == NULL)
6149                 return NULL;
6150
6151         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6152                 cfg->persistent_group = 2;
6153         else if (ssid->p2p_persistent_group)
6154                 cfg->persistent_group = 1;
6155         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6156         if (wpa_s->max_stations &&
6157             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6158                 cfg->max_clients = wpa_s->max_stations;
6159         else
6160                 cfg->max_clients = wpa_s->conf->max_num_sta;
6161         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6162         cfg->ssid_len = ssid->ssid_len;
6163         cfg->freq = ssid->frequency;
6164         cfg->cb_ctx = wpa_s;
6165         cfg->ie_update = wpas_p2p_ie_update;
6166         cfg->idle_update = wpas_p2p_idle_update;
6167
6168         group = p2p_group_init(wpa_s->global->p2p, cfg);
6169         if (group == NULL)
6170                 os_free(cfg);
6171         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6172                 p2p_group_notif_formation_done(group);
6173         wpa_s->p2p_group = group;
6174         return group;
6175 }
6176
6177
6178 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6179                           int registrar)
6180 {
6181         struct wpa_ssid *ssid = wpa_s->current_ssid;
6182
6183         if (!wpa_s->p2p_in_provisioning) {
6184                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6185                            "provisioning not in progress");
6186                 return;
6187         }
6188
6189         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6190                 u8 go_dev_addr[ETH_ALEN];
6191                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6192                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6193                                           ssid->ssid_len);
6194                 /* Clear any stored provisioning info */
6195                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6196         }
6197
6198         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6199                              NULL);
6200         wpa_s->p2p_go_group_formation_completed = 1;
6201         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6202                 /*
6203                  * Use a separate timeout for initial data connection to
6204                  * complete to allow the group to be removed automatically if
6205                  * something goes wrong in this step before the P2P group idle
6206                  * timeout mechanism is taken into use.
6207                  */
6208                 wpa_dbg(wpa_s, MSG_DEBUG,
6209                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6210                         P2P_MAX_INITIAL_CONN_WAIT);
6211                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6212                                        wpas_p2p_group_formation_timeout,
6213                                        wpa_s->parent, NULL);
6214         } else if (ssid) {
6215                 /*
6216                  * Use a separate timeout for initial data connection to
6217                  * complete to allow the group to be removed automatically if
6218                  * the client does not complete data connection successfully.
6219                  */
6220                 wpa_dbg(wpa_s, MSG_DEBUG,
6221                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6222                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6223                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6224                                        wpas_p2p_group_formation_timeout,
6225                                        wpa_s->parent, NULL);
6226                 /*
6227                  * Complete group formation on first successful data connection
6228                  */
6229                 wpa_s->p2p_go_group_formation_completed = 0;
6230         }
6231         if (wpa_s->global->p2p)
6232                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6233         wpas_group_formation_completed(wpa_s, 1, 0);
6234 }
6235
6236
6237 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6238                          struct wps_event_fail *fail)
6239 {
6240         if (!wpa_s->p2p_in_provisioning) {
6241                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6242                            "provisioning not in progress");
6243                 return;
6244         }
6245
6246         if (wpa_s->go_params) {
6247                 p2p_clear_provisioning_info(
6248                         wpa_s->global->p2p,
6249                         wpa_s->go_params->peer_device_addr);
6250         }
6251
6252         wpas_notify_p2p_wps_failed(wpa_s, fail);
6253
6254         if (wpa_s == wpa_s->global->p2p_group_formation) {
6255                 /*
6256                  * Allow some time for the failed WPS negotiation exchange to
6257                  * complete, but remove the group since group formation cannot
6258                  * succeed after provisioning failure.
6259                  */
6260                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6261                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6262                 eloop_deplete_timeout(0, 50000,
6263                                       wpas_p2p_group_formation_timeout,
6264                                       wpa_s->parent, NULL);
6265         }
6266 }
6267
6268
6269 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6270 {
6271         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6272             !wpa_s->p2p_in_provisioning)
6273                 return 0;
6274
6275         wpas_p2p_grpform_fail_after_wps(wpa_s);
6276
6277         return 1;
6278 }
6279
6280
6281 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6282                        const char *config_method,
6283                        enum wpas_p2p_prov_disc_use use,
6284                        struct p2ps_provision *p2ps_prov)
6285 {
6286         u16 config_methods;
6287
6288         wpa_s->global->pending_p2ps_group = 0;
6289         wpa_s->global->pending_p2ps_group_freq = 0;
6290         wpa_s->p2p_fallback_to_go_neg = 0;
6291         wpa_s->pending_pd_use = NORMAL_PD;
6292         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6293                 p2ps_prov->conncap = p2ps_group_capability(
6294                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6295                         &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6296
6297                 wpa_printf(MSG_DEBUG,
6298                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6299                            __func__, p2ps_prov->conncap,
6300                            p2ps_prov->adv_id, p2ps_prov->conncap,
6301                            p2ps_prov->status, p2ps_prov->info);
6302
6303                 config_methods = 0;
6304         } else if (os_strncmp(config_method, "display", 7) == 0)
6305                 config_methods = WPS_CONFIG_DISPLAY;
6306         else if (os_strncmp(config_method, "keypad", 6) == 0)
6307                 config_methods = WPS_CONFIG_KEYPAD;
6308         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6309                  os_strncmp(config_method, "pushbutton", 10) == 0)
6310                 config_methods = WPS_CONFIG_PUSHBUTTON;
6311         else {
6312                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6313                 os_free(p2ps_prov);
6314                 return -1;
6315         }
6316
6317         if (use == WPAS_P2P_PD_AUTO) {
6318                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6319                 wpa_s->pending_pd_config_methods = config_methods;
6320                 wpa_s->p2p_auto_pd = 1;
6321                 wpa_s->p2p_auto_join = 0;
6322                 wpa_s->pending_pd_before_join = 0;
6323                 wpa_s->auto_pd_scan_retry = 0;
6324                 wpas_p2p_stop_find(wpa_s);
6325                 wpa_s->p2p_join_scan_count = 0;
6326                 os_get_reltime(&wpa_s->p2p_auto_started);
6327                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6328                            wpa_s->p2p_auto_started.sec,
6329                            wpa_s->p2p_auto_started.usec);
6330                 wpas_p2p_join_scan(wpa_s, NULL);
6331                 return 0;
6332         }
6333
6334         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6335                 os_free(p2ps_prov);
6336                 return -1;
6337         }
6338
6339         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6340                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6341                                  0, 1);
6342 }
6343
6344
6345 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6346                               char *end)
6347 {
6348         return p2p_scan_result_text(ies, ies_len, buf, end);
6349 }
6350
6351
6352 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6353 {
6354         if (!offchannel_pending_action_tx(wpa_s))
6355                 return;
6356
6357         if (wpa_s->p2p_send_action_work)
6358                 wpas_p2p_free_send_action_work(wpa_s);
6359
6360         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6361                    "operation request");
6362         offchannel_clear_pending_action_tx(wpa_s);
6363 }
6364
6365
6366 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6367                   enum p2p_discovery_type type,
6368                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6369                   const u8 *dev_id, unsigned int search_delay,
6370                   u8 seek_cnt, const char **seek_string, int freq)
6371 {
6372         wpas_p2p_clear_pending_action_tx(wpa_s);
6373         wpa_s->p2p_long_listen = 0;
6374
6375         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6376             wpa_s->p2p_in_provisioning)
6377                 return -1;
6378
6379         wpa_supplicant_cancel_sched_scan(wpa_s);
6380
6381         return p2p_find(wpa_s->global->p2p, timeout, type,
6382                         num_req_dev_types, req_dev_types, dev_id,
6383                         search_delay, seek_cnt, seek_string, freq);
6384 }
6385
6386
6387 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6388                                             struct wpa_scan_results *scan_res)
6389 {
6390         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6391
6392         if (wpa_s->p2p_scan_work) {
6393                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6394                 wpa_s->p2p_scan_work = NULL;
6395                 radio_work_done(work);
6396         }
6397
6398         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6399                 return;
6400
6401         /*
6402          * Indicate that results have been processed so that the P2P module can
6403          * continue pending tasks.
6404          */
6405         p2p_scan_res_handled(wpa_s->global->p2p);
6406 }
6407
6408
6409 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6410 {
6411         wpas_p2p_clear_pending_action_tx(wpa_s);
6412         wpa_s->p2p_long_listen = 0;
6413         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6414         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6415
6416         if (wpa_s->global->p2p)
6417                 p2p_stop_find(wpa_s->global->p2p);
6418
6419         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6420                 wpa_printf(MSG_DEBUG,
6421                            "P2P: Do not consider the scan results after stop_find");
6422                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6423         }
6424 }
6425
6426
6427 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6428 {
6429         wpas_p2p_stop_find_oper(wpa_s);
6430         if (!wpa_s->global->pending_group_iface_for_p2ps)
6431                 wpas_p2p_remove_pending_group_interface(wpa_s);
6432 }
6433
6434
6435 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6436 {
6437         struct wpa_supplicant *wpa_s = eloop_ctx;
6438         wpa_s->p2p_long_listen = 0;
6439 }
6440
6441
6442 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6443 {
6444         int res;
6445
6446         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6447                 return -1;
6448
6449         wpa_supplicant_cancel_sched_scan(wpa_s);
6450         wpas_p2p_clear_pending_action_tx(wpa_s);
6451
6452         if (timeout == 0) {
6453                 /*
6454                  * This is a request for unlimited Listen state. However, at
6455                  * least for now, this is mapped to a Listen state for one
6456                  * hour.
6457                  */
6458                 timeout = 3600;
6459         }
6460         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6461         wpa_s->p2p_long_listen = 0;
6462
6463         /*
6464          * Stop previous find/listen operation to avoid trying to request a new
6465          * remain-on-channel operation while the driver is still running the
6466          * previous one.
6467          */
6468         if (wpa_s->global->p2p)
6469                 p2p_stop_find(wpa_s->global->p2p);
6470
6471         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6472         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6473                 wpa_s->p2p_long_listen = timeout * 1000;
6474                 eloop_register_timeout(timeout, 0,
6475                                        wpas_p2p_long_listen_timeout,
6476                                        wpa_s, NULL);
6477         }
6478
6479         return res;
6480 }
6481
6482
6483 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6484                           u8 *buf, size_t len, int p2p_group)
6485 {
6486         struct wpabuf *p2p_ie;
6487         int ret;
6488
6489         if (wpa_s->global->p2p_disabled)
6490                 return -1;
6491         /*
6492          * Advertize mandatory cross connection capability even on
6493          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6494          */
6495         if (wpa_s->conf->p2p_disabled && p2p_group)
6496                 return -1;
6497         if (wpa_s->global->p2p == NULL)
6498                 return -1;
6499         if (bss == NULL)
6500                 return -1;
6501
6502         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6503         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6504                                p2p_group, p2p_ie);
6505         wpabuf_free(p2p_ie);
6506
6507         return ret;
6508 }
6509
6510
6511 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6512                           const u8 *dst, const u8 *bssid,
6513                           const u8 *ie, size_t ie_len,
6514                           unsigned int rx_freq, int ssi_signal)
6515 {
6516         if (wpa_s->global->p2p_disabled)
6517                 return 0;
6518         if (wpa_s->global->p2p == NULL)
6519                 return 0;
6520
6521         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6522                                  ie, ie_len, rx_freq)) {
6523         case P2P_PREQ_NOT_P2P:
6524                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6525                                  ssi_signal);
6526                 /* fall through */
6527         case P2P_PREQ_MALFORMED:
6528         case P2P_PREQ_NOT_LISTEN:
6529         case P2P_PREQ_NOT_PROCESSED:
6530         default: /* make gcc happy */
6531                 return 0;
6532         case P2P_PREQ_PROCESSED:
6533                 return 1;
6534         }
6535 }
6536
6537
6538 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6539                         const u8 *sa, const u8 *bssid,
6540                         u8 category, const u8 *data, size_t len, int freq)
6541 {
6542         if (wpa_s->global->p2p_disabled)
6543                 return;
6544         if (wpa_s->global->p2p == NULL)
6545                 return;
6546
6547         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6548                       freq);
6549 }
6550
6551
6552 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6553 {
6554         if (wpa_s->global->p2p_disabled)
6555                 return;
6556         if (wpa_s->global->p2p == NULL)
6557                 return;
6558
6559         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6560 }
6561
6562
6563 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6564 {
6565         p2p_group_deinit(wpa_s->p2p_group);
6566         wpa_s->p2p_group = NULL;
6567
6568         wpa_s->ap_configured_cb = NULL;
6569         wpa_s->ap_configured_cb_ctx = NULL;
6570         wpa_s->ap_configured_cb_data = NULL;
6571         wpa_s->connect_without_scan = NULL;
6572 }
6573
6574
6575 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6576 {
6577         wpa_s->p2p_long_listen = 0;
6578
6579         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6580                 return -1;
6581
6582         return p2p_reject(wpa_s->global->p2p, addr);
6583 }
6584
6585
6586 /* Invite to reinvoke a persistent group */
6587 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6588                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6589                     int ht40, int vht, int pref_freq)
6590 {
6591         enum p2p_invite_role role;
6592         u8 *bssid = NULL;
6593         int force_freq = 0;
6594         int res;
6595         int no_pref_freq_given = pref_freq == 0;
6596         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6597
6598         wpa_s->global->p2p_invite_group = NULL;
6599         if (peer_addr)
6600                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6601         else
6602                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6603
6604         wpa_s->p2p_persistent_go_freq = freq;
6605         wpa_s->p2p_go_ht40 = !!ht40;
6606         if (ssid->mode == WPAS_MODE_P2P_GO) {
6607                 role = P2P_INVITE_ROLE_GO;
6608                 if (peer_addr == NULL) {
6609                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6610                                    "address in invitation command");
6611                         return -1;
6612                 }
6613                 if (wpas_p2p_create_iface(wpa_s)) {
6614                         if (wpas_p2p_add_group_interface(wpa_s,
6615                                                          WPA_IF_P2P_GO) < 0) {
6616                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6617                                            "allocate a new interface for the "
6618                                            "group");
6619                                 return -1;
6620                         }
6621                         bssid = wpa_s->pending_interface_addr;
6622                 } else
6623                         bssid = wpa_s->own_addr;
6624         } else {
6625                 role = P2P_INVITE_ROLE_CLIENT;
6626                 peer_addr = ssid->bssid;
6627         }
6628         wpa_s->pending_invite_ssid_id = ssid->id;
6629
6630         size = P2P_MAX_PREF_CHANNELS;
6631         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6632                                    role == P2P_INVITE_ROLE_GO,
6633                                    pref_freq_list, &size);
6634         if (res)
6635                 return res;
6636         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6637
6638         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6639                 return -1;
6640
6641         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6642             no_pref_freq_given && pref_freq > 0 &&
6643             wpa_s->num_multichan_concurrent > 1 &&
6644             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6645                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6646                            pref_freq);
6647                 pref_freq = 0;
6648         }
6649
6650         /*
6651          * Stop any find/listen operations before invitation and possibly
6652          * connection establishment.
6653          */
6654         wpas_p2p_stop_find_oper(wpa_s);
6655
6656         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6657                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6658                           1, pref_freq, -1);
6659 }
6660
6661
6662 /* Invite to join an active group */
6663 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6664                           const u8 *peer_addr, const u8 *go_dev_addr)
6665 {
6666         struct wpa_global *global = wpa_s->global;
6667         enum p2p_invite_role role;
6668         u8 *bssid = NULL;
6669         struct wpa_ssid *ssid;
6670         int persistent;
6671         int freq = 0, force_freq = 0, pref_freq = 0;
6672         int res;
6673         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6674
6675         wpa_s->p2p_persistent_go_freq = 0;
6676         wpa_s->p2p_go_ht40 = 0;
6677         wpa_s->p2p_go_vht = 0;
6678
6679         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6680                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6681                         break;
6682         }
6683         if (wpa_s == NULL) {
6684                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6685                 return -1;
6686         }
6687
6688         ssid = wpa_s->current_ssid;
6689         if (ssid == NULL) {
6690                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6691                            "invitation");
6692                 return -1;
6693         }
6694
6695         wpa_s->global->p2p_invite_group = wpa_s;
6696         persistent = ssid->p2p_persistent_group &&
6697                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6698                                         ssid->ssid, ssid->ssid_len);
6699
6700         if (ssid->mode == WPAS_MODE_P2P_GO) {
6701                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6702                 bssid = wpa_s->own_addr;
6703                 if (go_dev_addr == NULL)
6704                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6705                 freq = ssid->frequency;
6706         } else {
6707                 role = P2P_INVITE_ROLE_CLIENT;
6708                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6709                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6710                                    "invite to current group");
6711                         return -1;
6712                 }
6713                 bssid = wpa_s->bssid;
6714                 if (go_dev_addr == NULL &&
6715                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6716                         go_dev_addr = wpa_s->go_dev_addr;
6717                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6718                         (int) wpa_s->assoc_freq;
6719         }
6720         wpa_s->parent->pending_invite_ssid_id = -1;
6721
6722         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6723                 return -1;
6724
6725         size = P2P_MAX_PREF_CHANNELS;
6726         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6727                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
6728                                    pref_freq_list, &size);
6729         if (res)
6730                 return res;
6731         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6732
6733         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6734                           ssid->ssid, ssid->ssid_len, force_freq,
6735                           go_dev_addr, persistent, pref_freq, -1);
6736 }
6737
6738
6739 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6740 {
6741         struct wpa_ssid *ssid = wpa_s->current_ssid;
6742         u8 go_dev_addr[ETH_ALEN];
6743         int network_id = -1;
6744         int persistent;
6745         int freq;
6746         u8 ip[3 * 4];
6747         char ip_addr[100];
6748
6749         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6750                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6751                                      wpa_s->parent, NULL);
6752         }
6753
6754         if (!wpa_s->show_group_started || !ssid)
6755                 return;
6756
6757         wpa_s->show_group_started = 0;
6758
6759         os_memset(go_dev_addr, 0, ETH_ALEN);
6760         if (ssid->bssid_set)
6761                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6762         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6763                                                ssid->ssid_len);
6764         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6765
6766         if (wpa_s->global->p2p_group_formation == wpa_s)
6767                 wpa_s->global->p2p_group_formation = NULL;
6768
6769         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6770                 (int) wpa_s->assoc_freq;
6771
6772         ip_addr[0] = '\0';
6773         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6774                 int res;
6775
6776                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6777                                   " ip_addr=%u.%u.%u.%u "
6778                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6779                                   ip[0], ip[1], ip[2], ip[3],
6780                                   ip[4], ip[5], ip[6], ip[7],
6781                                   ip[8], ip[9], ip[10], ip[11]);
6782                 if (os_snprintf_error(sizeof(ip_addr), res))
6783                         ip_addr[0] = '\0';
6784         }
6785
6786         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6787                                ssid->passphrase == NULL && ssid->psk_set ?
6788                                ssid->psk : NULL,
6789                                ssid->passphrase, go_dev_addr, persistent,
6790                                ip_addr);
6791
6792         if (persistent)
6793                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6794                                                              ssid, go_dev_addr);
6795         if (network_id < 0)
6796                 network_id = ssid->id;
6797         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6798 }
6799
6800
6801 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6802                           u32 interval1, u32 duration2, u32 interval2)
6803 {
6804         int ret;
6805
6806         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6807                 return -1;
6808
6809         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6810             wpa_s->current_ssid == NULL ||
6811             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6812                 return -1;
6813
6814         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6815                                wpa_s->own_addr, wpa_s->assoc_freq,
6816                                duration1, interval1, duration2, interval2);
6817         if (ret == 0)
6818                 wpa_s->waiting_presence_resp = 1;
6819
6820         return ret;
6821 }
6822
6823
6824 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6825                         unsigned int interval)
6826 {
6827         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6828                 return -1;
6829
6830         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6831 }
6832
6833
6834 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6835 {
6836         if (wpa_s->current_ssid == NULL) {
6837                 /*
6838                  * current_ssid can be cleared when P2P client interface gets
6839                  * disconnected, so assume this interface was used as P2P
6840                  * client.
6841                  */
6842                 return 1;
6843         }
6844         return wpa_s->current_ssid->p2p_group &&
6845                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6846 }
6847
6848
6849 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6850 {
6851         struct wpa_supplicant *wpa_s = eloop_ctx;
6852
6853         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6854                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6855                            "disabled");
6856                 return;
6857         }
6858
6859         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6860                    "group");
6861         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6862 }
6863
6864
6865 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6866 {
6867         int timeout;
6868
6869         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6870                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6871
6872         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6873                 return;
6874
6875         timeout = wpa_s->conf->p2p_group_idle;
6876         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6877             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6878             timeout = P2P_MAX_CLIENT_IDLE;
6879
6880         if (timeout == 0)
6881                 return;
6882
6883         if (timeout < 0) {
6884                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6885                         timeout = 0; /* special client mode no-timeout */
6886                 else
6887                         return;
6888         }
6889
6890         if (wpa_s->p2p_in_provisioning) {
6891                 /*
6892                  * Use the normal group formation timeout during the
6893                  * provisioning phase to avoid terminating this process too
6894                  * early due to group idle timeout.
6895                  */
6896                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6897                            "during provisioning");
6898                 return;
6899         }
6900
6901         if (wpa_s->show_group_started) {
6902                 /*
6903                  * Use the normal group formation timeout between the end of
6904                  * the provisioning phase and completion of 4-way handshake to
6905                  * avoid terminating this process too early due to group idle
6906                  * timeout.
6907                  */
6908                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6909                            "while waiting for initial 4-way handshake to "
6910                            "complete");
6911                 return;
6912         }
6913
6914         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6915                    timeout);
6916         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6917                                wpa_s, NULL);
6918 }
6919
6920
6921 /* Returns 1 if the interface was removed */
6922 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6923                           u16 reason_code, const u8 *ie, size_t ie_len,
6924                           int locally_generated)
6925 {
6926         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6927                 return 0;
6928
6929         if (!locally_generated)
6930                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6931                                  ie_len);
6932
6933         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6934             wpa_s->current_ssid &&
6935             wpa_s->current_ssid->p2p_group &&
6936             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6937                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6938                            "session is ending");
6939                 if (wpas_p2p_group_delete(wpa_s,
6940                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6941                     > 0)
6942                         return 1;
6943         }
6944
6945         return 0;
6946 }
6947
6948
6949 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6950                              u16 reason_code, const u8 *ie, size_t ie_len,
6951                              int locally_generated)
6952 {
6953         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6954                 return;
6955
6956         if (!locally_generated)
6957                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6958                                    ie_len);
6959 }
6960
6961
6962 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6963 {
6964         struct p2p_data *p2p = wpa_s->global->p2p;
6965
6966         if (p2p == NULL)
6967                 return;
6968
6969         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6970                 return;
6971
6972         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6973                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6974
6975         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6976                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6977
6978         if (wpa_s->wps &&
6979             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6980                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6981
6982         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6983                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6984
6985         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6986                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6987                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6988                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6989                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6990         }
6991
6992         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6993                 p2p_set_sec_dev_types(p2p,
6994                                       (void *) wpa_s->conf->sec_device_type,
6995                                       wpa_s->conf->num_sec_device_types);
6996
6997         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6998                 int i;
6999                 p2p_remove_wps_vendor_extensions(p2p);
7000                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7001                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7002                                 continue;
7003                         p2p_add_wps_vendor_extension(
7004                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
7005                 }
7006         }
7007
7008         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7009             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7010                 char country[3];
7011                 country[0] = wpa_s->conf->country[0];
7012                 country[1] = wpa_s->conf->country[1];
7013                 country[2] = 0x04;
7014                 p2p_set_country(p2p, country);
7015         }
7016
7017         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7018                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7019                                      wpa_s->conf->p2p_ssid_postfix ?
7020                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7021                                      0);
7022         }
7023
7024         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7025                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7026
7027         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7028                 u8 reg_class, channel;
7029                 int ret;
7030                 unsigned int r;
7031                 u8 channel_forced;
7032
7033                 if (wpa_s->conf->p2p_listen_reg_class &&
7034                     wpa_s->conf->p2p_listen_channel) {
7035                         reg_class = wpa_s->conf->p2p_listen_reg_class;
7036                         channel = wpa_s->conf->p2p_listen_channel;
7037                         channel_forced = 1;
7038                 } else {
7039                         reg_class = 81;
7040                         /*
7041                          * Pick one of the social channels randomly as the
7042                          * listen channel.
7043                          */
7044                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7045                                 channel = 1;
7046                         else
7047                                 channel = 1 + (r % 3) * 5;
7048                         channel_forced = 0;
7049                 }
7050                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7051                                              channel_forced);
7052                 if (ret)
7053                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7054                                    "failed: %d", ret);
7055         }
7056         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7057                 u8 op_reg_class, op_channel, cfg_op_channel;
7058                 int ret = 0;
7059                 unsigned int r;
7060                 if (wpa_s->conf->p2p_oper_reg_class &&
7061                     wpa_s->conf->p2p_oper_channel) {
7062                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7063                         op_channel = wpa_s->conf->p2p_oper_channel;
7064                         cfg_op_channel = 1;
7065                 } else {
7066                         op_reg_class = 81;
7067                         /*
7068                          * Use random operation channel from (1, 6, 11)
7069                          *if no other preference is indicated.
7070                          */
7071                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7072                                 op_channel = 1;
7073                         else
7074                                 op_channel = 1 + (r % 3) * 5;
7075                         cfg_op_channel = 0;
7076                 }
7077                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7078                                            cfg_op_channel);
7079                 if (ret)
7080                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7081                                    "failed: %d", ret);
7082         }
7083
7084         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7085                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7086                                       wpa_s->conf->p2p_pref_chan) < 0) {
7087                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7088                                    "update failed");
7089                 }
7090
7091                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7092                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7093                                    "update failed");
7094                 }
7095         }
7096
7097         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7098                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7099 }
7100
7101
7102 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7103                      int duration)
7104 {
7105         if (!wpa_s->ap_iface)
7106                 return -1;
7107         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7108                                    duration);
7109 }
7110
7111
7112 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7113 {
7114         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7115                 return -1;
7116
7117         wpa_s->global->cross_connection = enabled;
7118         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7119
7120         if (!enabled) {
7121                 struct wpa_supplicant *iface;
7122
7123                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7124                 {
7125                         if (iface->cross_connect_enabled == 0)
7126                                 continue;
7127
7128                         iface->cross_connect_enabled = 0;
7129                         iface->cross_connect_in_use = 0;
7130                         wpa_msg_global(iface->parent, MSG_INFO,
7131                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7132                                        iface->ifname,
7133                                        iface->cross_connect_uplink);
7134                 }
7135         }
7136
7137         return 0;
7138 }
7139
7140
7141 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7142 {
7143         struct wpa_supplicant *iface;
7144
7145         if (!uplink->global->cross_connection)
7146                 return;
7147
7148         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7149                 if (!iface->cross_connect_enabled)
7150                         continue;
7151                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7152                     0)
7153                         continue;
7154                 if (iface->ap_iface == NULL)
7155                         continue;
7156                 if (iface->cross_connect_in_use)
7157                         continue;
7158
7159                 iface->cross_connect_in_use = 1;
7160                 wpa_msg_global(iface->parent, MSG_INFO,
7161                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7162                                iface->ifname, iface->cross_connect_uplink);
7163         }
7164 }
7165
7166
7167 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7168 {
7169         struct wpa_supplicant *iface;
7170
7171         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7172                 if (!iface->cross_connect_enabled)
7173                         continue;
7174                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7175                     0)
7176                         continue;
7177                 if (!iface->cross_connect_in_use)
7178                         continue;
7179
7180                 wpa_msg_global(iface->parent, MSG_INFO,
7181                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7182                                iface->ifname, iface->cross_connect_uplink);
7183                 iface->cross_connect_in_use = 0;
7184         }
7185 }
7186
7187
7188 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7189 {
7190         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7191             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7192             wpa_s->cross_connect_disallowed)
7193                 wpas_p2p_disable_cross_connect(wpa_s);
7194         else
7195                 wpas_p2p_enable_cross_connect(wpa_s);
7196         if (!wpa_s->ap_iface &&
7197             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7198                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7199 }
7200
7201
7202 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7203 {
7204         wpas_p2p_disable_cross_connect(wpa_s);
7205         if (!wpa_s->ap_iface &&
7206             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7207                                          wpa_s, NULL))
7208                 wpas_p2p_set_group_idle_timeout(wpa_s);
7209 }
7210
7211
7212 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7213 {
7214         struct wpa_supplicant *iface;
7215
7216         if (!wpa_s->global->cross_connection)
7217                 return;
7218
7219         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7220                 if (iface == wpa_s)
7221                         continue;
7222                 if (iface->drv_flags &
7223                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7224                         continue;
7225                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7226                     iface != wpa_s->parent)
7227                         continue;
7228
7229                 wpa_s->cross_connect_enabled = 1;
7230                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7231                            sizeof(wpa_s->cross_connect_uplink));
7232                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7233                            "%s to %s whenever uplink is available",
7234                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7235
7236                 if (iface->ap_iface || iface->current_ssid == NULL ||
7237                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7238                     iface->cross_connect_disallowed ||
7239                     iface->wpa_state != WPA_COMPLETED)
7240                         break;
7241
7242                 wpa_s->cross_connect_in_use = 1;
7243                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7244                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7245                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7246                 break;
7247         }
7248 }
7249
7250
7251 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7252 {
7253         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7254             !wpa_s->p2p_in_provisioning)
7255                 return 0; /* not P2P client operation */
7256
7257         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7258                    "session overlap");
7259         if (wpa_s != wpa_s->parent)
7260                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
7261         wpas_p2p_group_formation_failed(wpa_s, 0);
7262         return 1;
7263 }
7264
7265
7266 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7267 {
7268         struct wpa_supplicant *wpa_s = eloop_ctx;
7269         wpas_p2p_notif_pbc_overlap(wpa_s);
7270 }
7271
7272
7273 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7274                                   enum wpas_p2p_channel_update_trig trig)
7275 {
7276         struct p2p_channels chan, cli_chan;
7277         struct wpa_used_freq_data *freqs = NULL;
7278         unsigned int num = wpa_s->num_multichan_concurrent;
7279
7280         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7281                 return;
7282
7283         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7284         if (!freqs)
7285                 return;
7286
7287         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7288
7289         os_memset(&chan, 0, sizeof(chan));
7290         os_memset(&cli_chan, 0, sizeof(cli_chan));
7291         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7292                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7293                            "channel list");
7294                 return;
7295         }
7296
7297         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7298
7299         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7300
7301         /*
7302          * The used frequencies map changed, so it is possible that a GO is
7303          * using a channel that is no longer valid for P2P use. It is also
7304          * possible that due to policy consideration, it would be preferable to
7305          * move it to a frequency already used by other station interfaces.
7306          */
7307         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7308
7309         os_free(freqs);
7310 }
7311
7312
7313 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7314                                      struct wpa_scan_results *scan_res)
7315 {
7316         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7317 }
7318
7319
7320 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7321 {
7322         struct wpa_global *global = wpa_s->global;
7323         int found = 0;
7324         const u8 *peer;
7325
7326         if (global->p2p == NULL)
7327                 return -1;
7328
7329         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7330
7331         if (wpa_s->pending_interface_name[0] &&
7332             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7333                 found = 1;
7334
7335         peer = p2p_get_go_neg_peer(global->p2p);
7336         if (peer) {
7337                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7338                            MACSTR, MAC2STR(peer));
7339                 p2p_unauthorize(global->p2p, peer);
7340                 found = 1;
7341         }
7342
7343         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7344                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7345                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7346                 found = 1;
7347         }
7348
7349         if (wpa_s->pending_pd_before_join) {
7350                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7351                 wpa_s->pending_pd_before_join = 0;
7352                 found = 1;
7353         }
7354
7355         wpas_p2p_stop_find(wpa_s);
7356
7357         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7358                 if (wpa_s == global->p2p_group_formation &&
7359                     (wpa_s->p2p_in_provisioning ||
7360                      wpa_s->parent->pending_interface_type ==
7361                      WPA_IF_P2P_CLIENT)) {
7362                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7363                                    "formation found - cancelling",
7364                                    wpa_s->ifname);
7365                         found = 1;
7366                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7367                                              wpa_s->parent, NULL);
7368                         if (wpa_s->p2p_in_provisioning) {
7369                                 wpas_group_formation_completed(wpa_s, 0, 0);
7370                                 break;
7371                         }
7372                         wpas_p2p_group_delete(wpa_s,
7373                                               P2P_GROUP_REMOVAL_REQUESTED);
7374                         break;
7375                 } else if (wpa_s->p2p_in_invitation) {
7376                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7377                                    wpa_s->ifname);
7378                         found = 1;
7379                         wpas_p2p_group_formation_failed(wpa_s, 0);
7380                 }
7381         }
7382
7383         if (!found) {
7384                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7385                 return -1;
7386         }
7387
7388         return 0;
7389 }
7390
7391
7392 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7393 {
7394         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7395                 return;
7396
7397         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7398                    "being available anymore");
7399         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7400 }
7401
7402
7403 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7404                                    int freq_24, int freq_5, int freq_overall)
7405 {
7406         struct p2p_data *p2p = wpa_s->global->p2p;
7407         if (p2p == NULL)
7408                 return;
7409         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7410 }
7411
7412
7413 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7414 {
7415         u8 peer[ETH_ALEN];
7416         struct p2p_data *p2p = wpa_s->global->p2p;
7417
7418         if (p2p == NULL)
7419                 return -1;
7420
7421         if (hwaddr_aton(addr, peer))
7422                 return -1;
7423
7424         return p2p_unauthorize(p2p, peer);
7425 }
7426
7427
7428 /**
7429  * wpas_p2p_disconnect - Disconnect from a P2P Group
7430  * @wpa_s: Pointer to wpa_supplicant data
7431  * Returns: 0 on success, -1 on failure
7432  *
7433  * This can be used to disconnect from a group in which the local end is a P2P
7434  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7435  * virtual network interface was created for this group, that interface will be
7436  * removed. Otherwise, only the configured P2P group network will be removed
7437  * from the interface.
7438  */
7439 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7440 {
7441
7442         if (wpa_s == NULL)
7443                 return -1;
7444
7445         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7446                 -1 : 0;
7447 }
7448
7449
7450 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7451 {
7452         int ret;
7453
7454         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7455                 return 0;
7456
7457         ret = p2p_in_progress(wpa_s->global->p2p);
7458         if (ret == 0) {
7459                 /*
7460                  * Check whether there is an ongoing WPS provisioning step (or
7461                  * other parts of group formation) on another interface since
7462                  * p2p_in_progress() does not report this to avoid issues for
7463                  * scans during such provisioning step.
7464                  */
7465                 if (wpa_s->global->p2p_group_formation &&
7466                     wpa_s->global->p2p_group_formation != wpa_s) {
7467                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7468                                 "in group formation",
7469                                 wpa_s->global->p2p_group_formation->ifname);
7470                         ret = 1;
7471                 }
7472         }
7473
7474         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7475                 struct os_reltime now;
7476                 os_get_reltime(&now);
7477                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7478                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7479                         /* Wait for the first client has expired */
7480                         wpa_s->global->p2p_go_wait_client.sec = 0;
7481                 } else {
7482                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7483                         ret = 1;
7484                 }
7485         }
7486
7487         return ret;
7488 }
7489
7490
7491 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7492                               struct wpa_ssid *ssid)
7493 {
7494         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7495             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7496                                  wpa_s->parent, NULL) > 0) {
7497                 /**
7498                  * Remove the network by scheduling the group formation
7499                  * timeout to happen immediately. The teardown code
7500                  * needs to be scheduled to run asynch later so that we
7501                  * don't delete data from under ourselves unexpectedly.
7502                  * Calling wpas_p2p_group_formation_timeout directly
7503                  * causes a series of crashes in WPS failure scenarios.
7504                  */
7505                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7506                            "P2P group network getting removed");
7507                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7508                                        wpa_s->parent, NULL);
7509         }
7510 }
7511
7512
7513 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7514                                           const u8 *addr, const u8 *ssid,
7515                                           size_t ssid_len)
7516 {
7517         struct wpa_ssid *s;
7518         size_t i;
7519
7520         for (s = wpa_s->conf->ssid; s; s = s->next) {
7521                 if (s->disabled != 2)
7522                         continue;
7523                 if (ssid &&
7524                     (ssid_len != s->ssid_len ||
7525                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7526                         continue;
7527                 if (addr == NULL) {
7528                         if (s->mode == WPAS_MODE_P2P_GO)
7529                                 return s;
7530                         continue;
7531                 }
7532                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7533                         return s; /* peer is GO in the persistent group */
7534                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7535                         continue;
7536                 for (i = 0; i < s->num_p2p_clients; i++) {
7537                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7538                                       addr, ETH_ALEN) == 0)
7539                                 return s; /* peer is P2P client in persistent
7540                                            * group */
7541                 }
7542         }
7543
7544         return NULL;
7545 }
7546
7547
7548 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7549                                        const u8 *addr)
7550 {
7551         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7552                                  wpa_s->parent, NULL) > 0) {
7553                 /*
7554                  * This can happen if WPS provisioning step is not terminated
7555                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7556                  * peer was able to connect, there is no need to time out group
7557                  * formation after this, though. In addition, this is used with
7558                  * the initial connection wait on the GO as a separate formation
7559                  * timeout and as such, expected to be hit after the initial WPS
7560                  * provisioning step.
7561                  */
7562                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7563
7564                 if (!wpa_s->p2p_go_group_formation_completed &&
7565                     !wpa_s->group_formation_reported) {
7566                         /*
7567                          * GO has not yet notified group formation success since
7568                          * the WPS step was not completed cleanly. Do that
7569                          * notification now since the P2P Client was able to
7570                          * connect and as such, must have received the
7571                          * credential from the WPS step.
7572                          */
7573                         if (wpa_s->global->p2p)
7574                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7575                         wpas_group_formation_completed(wpa_s, 1, 0);
7576                 }
7577         }
7578         if (!wpa_s->p2p_go_group_formation_completed) {
7579                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7580                 wpa_s->p2p_go_group_formation_completed = 1;
7581                 wpa_s->global->p2p_group_formation = NULL;
7582                 wpa_s->p2p_in_provisioning = 0;
7583                 wpa_s->p2p_in_invitation = 0;
7584         }
7585         wpa_s->global->p2p_go_wait_client.sec = 0;
7586         if (addr == NULL)
7587                 return;
7588         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7589 }
7590
7591
7592 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7593                                        int group_added)
7594 {
7595         struct wpa_supplicant *group = wpa_s;
7596         int ret = 0;
7597
7598         if (wpa_s->global->p2p_group_formation)
7599                 group = wpa_s->global->p2p_group_formation;
7600         wpa_s = wpa_s->global->p2p_init_wpa_s;
7601         offchannel_send_action_done(wpa_s);
7602         if (group_added)
7603                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7604         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7605         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7606                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7607                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7608                          wpa_s->p2p_persistent_id,
7609                          wpa_s->p2p_pd_before_go_neg,
7610                          wpa_s->p2p_go_ht40,
7611                          wpa_s->p2p_go_vht);
7612         return ret;
7613 }
7614
7615
7616 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7617 {
7618         int res;
7619
7620         if (!wpa_s->p2p_fallback_to_go_neg ||
7621             wpa_s->p2p_in_provisioning <= 5)
7622                 return 0;
7623
7624         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7625                 return 0; /* peer operating as a GO */
7626
7627         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7628                 "fallback to GO Negotiation");
7629         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7630                        "reason=GO-not-found");
7631         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7632
7633         return res == 1 ? 2 : 1;
7634 }
7635
7636
7637 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7638 {
7639         struct wpa_supplicant *ifs;
7640
7641         if (wpa_s->wpa_state > WPA_SCANNING) {
7642                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7643                         "concurrent operation",
7644                         wpa_s->conf->p2p_search_delay);
7645                 return wpa_s->conf->p2p_search_delay;
7646         }
7647
7648         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7649                          radio_list) {
7650                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7651                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7652                                 "delay due to concurrent operation on "
7653                                 "interface %s",
7654                                 wpa_s->conf->p2p_search_delay,
7655                                 ifs->ifname);
7656                         return wpa_s->conf->p2p_search_delay;
7657                 }
7658         }
7659
7660         return 0;
7661 }
7662
7663
7664 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7665                                      struct wpa_ssid *s, const u8 *addr,
7666                                      int iface_addr)
7667 {
7668         struct psk_list_entry *psk, *tmp;
7669         int changed = 0;
7670
7671         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7672                               list) {
7673                 if ((iface_addr && !psk->p2p &&
7674                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7675                     (!iface_addr && psk->p2p &&
7676                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7677                         wpa_dbg(wpa_s, MSG_DEBUG,
7678                                 "P2P: Remove persistent group PSK list entry for "
7679                                 MACSTR " p2p=%u",
7680                                 MAC2STR(psk->addr), psk->p2p);
7681                         dl_list_del(&psk->list);
7682                         os_free(psk);
7683                         changed++;
7684                 }
7685         }
7686
7687         return changed;
7688 }
7689
7690
7691 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7692                          const u8 *p2p_dev_addr,
7693                          const u8 *psk, size_t psk_len)
7694 {
7695         struct wpa_ssid *ssid = wpa_s->current_ssid;
7696         struct wpa_ssid *persistent;
7697         struct psk_list_entry *p, *last;
7698
7699         if (psk_len != sizeof(p->psk))
7700                 return;
7701
7702         if (p2p_dev_addr) {
7703                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7704                         " p2p_dev_addr=" MACSTR,
7705                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7706                 if (is_zero_ether_addr(p2p_dev_addr))
7707                         p2p_dev_addr = NULL;
7708         } else {
7709                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7710                         MAC2STR(mac_addr));
7711         }
7712
7713         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7714                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7715                 /* To be added to persistent group once created */
7716                 if (wpa_s->global->add_psk == NULL) {
7717                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7718                         if (wpa_s->global->add_psk == NULL)
7719                                 return;
7720                 }
7721                 p = wpa_s->global->add_psk;
7722                 if (p2p_dev_addr) {
7723                         p->p2p = 1;
7724                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7725                 } else {
7726                         p->p2p = 0;
7727                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7728                 }
7729                 os_memcpy(p->psk, psk, psk_len);
7730                 return;
7731         }
7732
7733         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7734                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7735                 return;
7736         }
7737
7738         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7739                                              ssid->ssid_len);
7740         if (!persistent) {
7741                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7742                 return;
7743         }
7744
7745         p = os_zalloc(sizeof(*p));
7746         if (p == NULL)
7747                 return;
7748         if (p2p_dev_addr) {
7749                 p->p2p = 1;
7750                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7751         } else {
7752                 p->p2p = 0;
7753                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7754         }
7755         os_memcpy(p->psk, psk, psk_len);
7756
7757         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7758             (last = dl_list_last(&persistent->psk_list,
7759                                  struct psk_list_entry, list))) {
7760                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7761                         MACSTR " (p2p=%u) to make room for a new one",
7762                         MAC2STR(last->addr), last->p2p);
7763                 dl_list_del(&last->list);
7764                 os_free(last);
7765         }
7766
7767         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7768                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7769                                   p2p_dev_addr == NULL);
7770         if (p2p_dev_addr) {
7771                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7772                         MACSTR, MAC2STR(p2p_dev_addr));
7773         } else {
7774                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7775                         MAC2STR(mac_addr));
7776         }
7777         dl_list_add(&persistent->psk_list, &p->list);
7778
7779         if (wpa_s->parent->conf->update_config &&
7780             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7781                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7782 }
7783
7784
7785 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7786                                 struct wpa_ssid *s, const u8 *addr,
7787                                 int iface_addr)
7788 {
7789         int res;
7790
7791         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7792         if (res > 0 && wpa_s->conf->update_config &&
7793             wpa_config_write(wpa_s->confname, wpa_s->conf))
7794                 wpa_dbg(wpa_s, MSG_DEBUG,
7795                         "P2P: Failed to update configuration");
7796 }
7797
7798
7799 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7800                                       const u8 *peer, int iface_addr)
7801 {
7802         struct hostapd_data *hapd;
7803         struct hostapd_wpa_psk *psk, *prev, *rem;
7804         struct sta_info *sta;
7805
7806         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7807             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7808                 return;
7809
7810         /* Remove per-station PSK entry */
7811         hapd = wpa_s->ap_iface->bss[0];
7812         prev = NULL;
7813         psk = hapd->conf->ssid.wpa_psk;
7814         while (psk) {
7815                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7816                     (!iface_addr &&
7817                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7818                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7819                                 MACSTR " iface_addr=%d",
7820                                 MAC2STR(peer), iface_addr);
7821                         if (prev)
7822                                 prev->next = psk->next;
7823                         else
7824                                 hapd->conf->ssid.wpa_psk = psk->next;
7825                         rem = psk;
7826                         psk = psk->next;
7827                         os_free(rem);
7828                 } else {
7829                         prev = psk;
7830                         psk = psk->next;
7831                 }
7832         }
7833
7834         /* Disconnect from group */
7835         if (iface_addr)
7836                 sta = ap_get_sta(hapd, peer);
7837         else
7838                 sta = ap_get_sta_p2p(hapd, peer);
7839         if (sta) {
7840                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7841                         " (iface_addr=%d) from group",
7842                         MAC2STR(peer), iface_addr);
7843                 hostapd_drv_sta_deauth(hapd, sta->addr,
7844                                        WLAN_REASON_DEAUTH_LEAVING);
7845                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7846         }
7847 }
7848
7849
7850 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7851                             int iface_addr)
7852 {
7853         struct wpa_ssid *s;
7854         struct wpa_supplicant *w;
7855         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
7856
7857         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
7858
7859         /* Remove from any persistent group */
7860         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
7861                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
7862                         continue;
7863                 if (!iface_addr)
7864                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
7865                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
7866         }
7867
7868         /* Remove from any operating group */
7869         for (w = wpa_s->global->ifaces; w; w = w->next)
7870                 wpas_p2p_remove_client_go(w, peer, iface_addr);
7871 }
7872
7873
7874 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
7875 {
7876         struct wpa_supplicant *wpa_s = eloop_ctx;
7877         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
7878 }
7879
7880
7881 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
7882 {
7883         struct wpa_supplicant *wpa_s = eloop_ctx;
7884
7885         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
7886         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
7887 }
7888
7889
7890 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
7891                                         struct wpa_ssid *ssid)
7892 {
7893         struct wpa_supplicant *iface;
7894
7895         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7896                 if (!iface->current_ssid ||
7897                     iface->current_ssid->frequency == freq ||
7898                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
7899                      !iface->current_ssid->p2p_group))
7900                         continue;
7901
7902                 /* Remove the connection with least priority */
7903                 if (!wpas_is_p2p_prioritized(iface)) {
7904                         /* STA connection has priority over existing
7905                          * P2P connection, so remove the interface. */
7906                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
7907                         eloop_register_timeout(0, 0,
7908                                                wpas_p2p_group_freq_conflict,
7909                                                iface, NULL);
7910                         /* If connection in progress is P2P connection, do not
7911                          * proceed for the connection. */
7912                         if (wpa_s == iface)
7913                                 return -1;
7914                         else
7915                                 return 0;
7916                 } else {
7917                         /* P2P connection has priority, disable the STA network
7918                          */
7919                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
7920                                                        ssid);
7921                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7922                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7923                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7924                                   ETH_ALEN);
7925                         /* If P2P connection is in progress, continue
7926                          * connecting...*/
7927                         if (wpa_s == iface)
7928                                 return 0;
7929                         else
7930                                 return -1;
7931                 }
7932         }
7933
7934         return 0;
7935 }
7936
7937
7938 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7939 {
7940         struct wpa_ssid *ssid = wpa_s->current_ssid;
7941
7942         if (ssid == NULL || !ssid->p2p_group)
7943                 return 0;
7944
7945         if (wpa_s->p2p_last_4way_hs_fail &&
7946             wpa_s->p2p_last_4way_hs_fail == ssid) {
7947                 u8 go_dev_addr[ETH_ALEN];
7948                 struct wpa_ssid *persistent;
7949
7950                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7951                                               ssid->ssid,
7952                                               ssid->ssid_len) <= 0) {
7953                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7954                         goto disconnect;
7955                 }
7956
7957                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7958                         MACSTR, MAC2STR(go_dev_addr));
7959                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7960                                                      ssid->ssid,
7961                                                      ssid->ssid_len);
7962                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7963                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7964                         goto disconnect;
7965                 }
7966                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7967                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7968                                persistent->id);
7969         disconnect:
7970                 wpa_s->p2p_last_4way_hs_fail = NULL;
7971                 /*
7972                  * Remove the group from a timeout to avoid issues with caller
7973                  * continuing to use the interface if this is on a P2P group
7974                  * interface.
7975                  */
7976                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7977                                        wpa_s, NULL);
7978                 return 1;
7979         }
7980
7981         wpa_s->p2p_last_4way_hs_fail = ssid;
7982         return 0;
7983 }
7984
7985
7986 #ifdef CONFIG_WPS_NFC
7987
7988 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7989                                              struct wpabuf *p2p)
7990 {
7991         struct wpabuf *ret;
7992         size_t wsc_len;
7993
7994         if (p2p == NULL) {
7995                 wpabuf_free(wsc);
7996                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7997                 return NULL;
7998         }
7999
8000         wsc_len = wsc ? wpabuf_len(wsc) : 0;
8001         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8002         if (ret == NULL) {
8003                 wpabuf_free(wsc);
8004                 wpabuf_free(p2p);
8005                 return NULL;
8006         }
8007
8008         wpabuf_put_be16(ret, wsc_len);
8009         if (wsc)
8010                 wpabuf_put_buf(ret, wsc);
8011         wpabuf_put_be16(ret, wpabuf_len(p2p));
8012         wpabuf_put_buf(ret, p2p);
8013
8014         wpabuf_free(wsc);
8015         wpabuf_free(p2p);
8016         wpa_hexdump_buf(MSG_DEBUG,
8017                         "P2P: Generated NFC connection handover message", ret);
8018
8019         if (ndef && ret) {
8020                 struct wpabuf *tmp;
8021                 tmp = ndef_build_p2p(ret);
8022                 wpabuf_free(ret);
8023                 if (tmp == NULL) {
8024                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8025                         return NULL;
8026                 }
8027                 ret = tmp;
8028         }
8029
8030         return ret;
8031 }
8032
8033
8034 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8035                              struct wpa_ssid **ssid, u8 *go_dev_addr)
8036 {
8037         struct wpa_supplicant *iface;
8038
8039         if (go_dev_addr)
8040                 os_memset(go_dev_addr, 0, ETH_ALEN);
8041         if (ssid)
8042                 *ssid = NULL;
8043         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8044                 if (iface->wpa_state < WPA_ASSOCIATING ||
8045                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8046                     !iface->current_ssid->p2p_group ||
8047                     iface->current_ssid->mode != WPAS_MODE_INFRA)
8048                         continue;
8049                 if (ssid)
8050                         *ssid = iface->current_ssid;
8051                 if (go_dev_addr)
8052                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8053                 return iface->assoc_freq;
8054         }
8055         return 0;
8056 }
8057
8058
8059 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8060                                           int ndef)
8061 {
8062         struct wpabuf *wsc, *p2p;
8063         struct wpa_ssid *ssid;
8064         u8 go_dev_addr[ETH_ALEN];
8065         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8066
8067         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8068                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8069                 return NULL;
8070         }
8071
8072         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8073             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8074                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8075                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8076                 return NULL;
8077         }
8078
8079         if (cli_freq == 0) {
8080                 wsc = wps_build_nfc_handover_req_p2p(
8081                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8082         } else
8083                 wsc = NULL;
8084         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8085                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8086                                          ssid ? ssid->ssid_len : 0);
8087
8088         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8089 }
8090
8091
8092 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8093                                           int ndef, int tag)
8094 {
8095         struct wpabuf *wsc, *p2p;
8096         struct wpa_ssid *ssid;
8097         u8 go_dev_addr[ETH_ALEN];
8098         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8099
8100         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8101                 return NULL;
8102
8103         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8104             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8105                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8106                 return NULL;
8107
8108         if (cli_freq == 0) {
8109                 wsc = wps_build_nfc_handover_sel_p2p(
8110                         wpa_s->parent->wps,
8111                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8112                         DEV_PW_NFC_CONNECTION_HANDOVER,
8113                         wpa_s->conf->wps_nfc_dh_pubkey,
8114                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8115         } else
8116                 wsc = NULL;
8117         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8118                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8119                                          ssid ? ssid->ssid_len : 0);
8120
8121         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8122 }
8123
8124
8125 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8126                                    struct p2p_nfc_params *params)
8127 {
8128         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8129                    "connection handover (freq=%d)",
8130                    params->go_freq);
8131
8132         if (params->go_freq && params->go_ssid_len) {
8133                 wpa_s->p2p_wps_method = WPS_NFC;
8134                 wpa_s->pending_join_wps_method = WPS_NFC;
8135                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8136                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8137                           ETH_ALEN);
8138                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8139                                            params->go_ssid,
8140                                            params->go_ssid_len);
8141         }
8142
8143         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8144                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8145                                 params->go_freq, -1, 0, 1, 1);
8146 }
8147
8148
8149 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8150                                   struct p2p_nfc_params *params, int tag)
8151 {
8152         int res, persistent;
8153         struct wpa_ssid *ssid;
8154
8155         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8156                    "connection handover");
8157         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8158                 ssid = wpa_s->current_ssid;
8159                 if (ssid == NULL)
8160                         continue;
8161                 if (ssid->mode != WPAS_MODE_P2P_GO)
8162                         continue;
8163                 if (wpa_s->ap_iface == NULL)
8164                         continue;
8165                 break;
8166         }
8167         if (wpa_s == NULL) {
8168                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8169                 return -1;
8170         }
8171
8172         if (wpa_s->parent->p2p_oob_dev_pw_id !=
8173             DEV_PW_NFC_CONNECTION_HANDOVER &&
8174             !wpa_s->parent->p2p_oob_dev_pw) {
8175                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8176                 return -1;
8177         }
8178         res = wpas_ap_wps_add_nfc_pw(
8179                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
8180                 wpa_s->parent->p2p_oob_dev_pw,
8181                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
8182                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
8183         if (res)
8184                 return res;
8185
8186         if (!tag) {
8187                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8188                 return 0;
8189         }
8190
8191         if (!params->peer ||
8192             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8193                 return 0;
8194
8195         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8196                    " to join", MAC2STR(params->peer->p2p_device_addr));
8197
8198         wpa_s->global->p2p_invite_group = wpa_s;
8199         persistent = ssid->p2p_persistent_group &&
8200                 wpas_p2p_get_persistent(wpa_s->parent,
8201                                         params->peer->p2p_device_addr,
8202                                         ssid->ssid, ssid->ssid_len);
8203         wpa_s->parent->pending_invite_ssid_id = -1;
8204
8205         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8206                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8207                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8208                           wpa_s->global->p2p_dev_addr, persistent, 0,
8209                           wpa_s->parent->p2p_oob_dev_pw_id);
8210 }
8211
8212
8213 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8214                                     struct p2p_nfc_params *params,
8215                                     int forced_freq)
8216 {
8217         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8218                    "connection handover");
8219         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8220                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8221                                 forced_freq, -1, 0, 1, 1);
8222 }
8223
8224
8225 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8226                                     struct p2p_nfc_params *params,
8227                                     int forced_freq)
8228 {
8229         int res;
8230
8231         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8232                    "connection handover");
8233         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8234                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8235                                forced_freq, -1, 0, 1, 1);
8236         if (res)
8237                 return res;
8238
8239         res = wpas_p2p_listen(wpa_s, 60);
8240         if (res) {
8241                 p2p_unauthorize(wpa_s->global->p2p,
8242                                 params->peer->p2p_device_addr);
8243         }
8244
8245         return res;
8246 }
8247
8248
8249 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8250                                             const struct wpabuf *data,
8251                                             int sel, int tag, int forced_freq)
8252 {
8253         const u8 *pos, *end;
8254         u16 len, id;
8255         struct p2p_nfc_params params;
8256         int res;
8257
8258         os_memset(&params, 0, sizeof(params));
8259         params.sel = sel;
8260
8261         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8262
8263         pos = wpabuf_head(data);
8264         end = pos + wpabuf_len(data);
8265
8266         if (end - pos < 2) {
8267                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8268                            "attributes");
8269                 return -1;
8270         }
8271         len = WPA_GET_BE16(pos);
8272         pos += 2;
8273         if (len > end - pos) {
8274                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8275                            "attributes");
8276                 return -1;
8277         }
8278         params.wsc_attr = pos;
8279         params.wsc_len = len;
8280         pos += len;
8281
8282         if (end - pos < 2) {
8283                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
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 P2P "
8291                            "attributes");
8292                 return -1;
8293         }
8294         params.p2p_attr = pos;
8295         params.p2p_len = len;
8296         pos += len;
8297
8298         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8299                     params.wsc_attr, params.wsc_len);
8300         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8301                     params.p2p_attr, params.p2p_len);
8302         if (pos < end) {
8303                 wpa_hexdump(MSG_DEBUG,
8304                             "P2P: Ignored extra data after P2P attributes",
8305                             pos, end - pos);
8306         }
8307
8308         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8309         if (res)
8310                 return res;
8311
8312         if (params.next_step == NO_ACTION)
8313                 return 0;
8314
8315         if (params.next_step == BOTH_GO) {
8316                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8317                         MAC2STR(params.peer->p2p_device_addr));
8318                 return 0;
8319         }
8320
8321         if (params.next_step == PEER_CLIENT) {
8322                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8323                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8324                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8325                                 " ssid=\"%s\"",
8326                                 MAC2STR(params.peer->p2p_device_addr),
8327                                 params.go_freq,
8328                                 MAC2STR(params.go_dev_addr),
8329                                 wpa_ssid_txt(params.go_ssid,
8330                                              params.go_ssid_len));
8331                 } else {
8332                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8333                                 "peer=" MACSTR " freq=%d",
8334                                 MAC2STR(params.peer->p2p_device_addr),
8335                                 params.go_freq);
8336                 }
8337                 return 0;
8338         }
8339
8340         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8341                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8342                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8343                 return 0;
8344         }
8345
8346         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8347         wpa_s->p2p_oob_dev_pw = NULL;
8348
8349         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8350                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8351                            "received");
8352                 return -1;
8353         }
8354
8355         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8356         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8357         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8358                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8359         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8360                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8361         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8362
8363         if (tag) {
8364                 if (id < 0x10) {
8365                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8366                                    "peer OOB Device Password Id %u", id);
8367                         return -1;
8368                 }
8369                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8370                            "Device Password Id %u", id);
8371                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8372                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8373                                 params.oob_dev_pw_len -
8374                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
8375                 wpa_s->p2p_oob_dev_pw_id = id;
8376                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8377                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8378                         params.oob_dev_pw_len -
8379                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8380                 if (wpa_s->p2p_oob_dev_pw == NULL)
8381                         return -1;
8382
8383                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8384                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8385                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8386                         return -1;
8387         } else {
8388                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8389                            "without Device Password");
8390                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8391         }
8392
8393         switch (params.next_step) {
8394         case NO_ACTION:
8395         case BOTH_GO:
8396         case PEER_CLIENT:
8397                 /* already covered above */
8398                 return 0;
8399         case JOIN_GROUP:
8400                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8401         case AUTH_JOIN:
8402                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8403         case INIT_GO_NEG:
8404                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8405         case RESP_GO_NEG:
8406                 /* TODO: use own OOB Dev Pw */
8407                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8408         }
8409
8410         return -1;
8411 }
8412
8413
8414 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8415                              const struct wpabuf *data, int forced_freq)
8416 {
8417         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8418                 return -1;
8419
8420         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8421 }
8422
8423
8424 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8425                                  const struct wpabuf *req,
8426                                  const struct wpabuf *sel, int forced_freq)
8427 {
8428         struct wpabuf *tmp;
8429         int ret;
8430
8431         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8432                 return -1;
8433
8434         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8435
8436         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8437                           wpabuf_head(req), wpabuf_len(req));
8438         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8439                           wpabuf_head(sel), wpabuf_len(sel));
8440         if (forced_freq)
8441                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8442         tmp = ndef_parse_p2p(init ? sel : req);
8443         if (tmp == NULL) {
8444                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8445                 return -1;
8446         }
8447
8448         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8449                                                forced_freq);
8450         wpabuf_free(tmp);
8451
8452         return ret;
8453 }
8454
8455
8456 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8457 {
8458         const u8 *if_addr;
8459         int go_intent = wpa_s->conf->p2p_go_intent;
8460         struct wpa_supplicant *iface;
8461
8462         if (wpa_s->global->p2p == NULL)
8463                 return -1;
8464
8465         if (!enabled) {
8466                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8467                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8468                 {
8469                         if (!iface->ap_iface)
8470                                 continue;
8471                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8472                 }
8473                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8474                                                  0, NULL);
8475                 if (wpa_s->p2p_nfc_tag_enabled)
8476                         wpas_p2p_remove_pending_group_interface(wpa_s);
8477                 wpa_s->p2p_nfc_tag_enabled = 0;
8478                 return 0;
8479         }
8480
8481         if (wpa_s->global->p2p_disabled)
8482                 return -1;
8483
8484         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8485             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8486             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8487             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8488                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8489                            "to allow static handover cases");
8490                 return -1;
8491         }
8492
8493         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8494
8495         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8496         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8497         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8498         if (wpa_s->p2p_oob_dev_pw == NULL)
8499                 return -1;
8500         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8501
8502         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8503             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8504                 /*
8505                  * P2P Group Interface present and the command came on group
8506                  * interface, so enable the token for the current interface.
8507                  */
8508                 wpa_s->create_p2p_iface = 0;
8509         } else {
8510                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8511         }
8512
8513         if (wpa_s->create_p2p_iface) {
8514                 enum wpa_driver_if_type iftype;
8515                 /* Prepare to add a new interface for the group */
8516                 iftype = WPA_IF_P2P_GROUP;
8517                 if (go_intent == 15)
8518                         iftype = WPA_IF_P2P_GO;
8519                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8520                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8521                                    "interface for the group");
8522                         return -1;
8523                 }
8524
8525                 if_addr = wpa_s->pending_interface_addr;
8526         } else
8527                 if_addr = wpa_s->own_addr;
8528
8529         wpa_s->p2p_nfc_tag_enabled = enabled;
8530
8531         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8532                 struct hostapd_data *hapd;
8533                 if (iface->ap_iface == NULL)
8534                         continue;
8535                 hapd = iface->ap_iface->bss[0];
8536                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8537                 hapd->conf->wps_nfc_dh_pubkey =
8538                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8539                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8540                 hapd->conf->wps_nfc_dh_privkey =
8541                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8542                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8543                 hapd->conf->wps_nfc_dev_pw =
8544                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8545                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8546
8547                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8548                         wpa_dbg(iface, MSG_DEBUG,
8549                                 "P2P: Failed to enable NFC Tag for GO");
8550                 }
8551         }
8552         p2p_set_authorized_oob_dev_pw_id(
8553                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8554                 if_addr);
8555
8556         return 0;
8557 }
8558
8559 #endif /* CONFIG_WPS_NFC */
8560
8561
8562 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8563                                              struct wpa_used_freq_data *freqs,
8564                                              unsigned int num)
8565 {
8566         u8 curr_chan, cand, chan;
8567         unsigned int i;
8568
8569         /*
8570          * If possible, optimize the Listen channel to be a channel that is
8571          * already used by one of the other interfaces.
8572          */
8573         if (!wpa_s->conf->p2p_optimize_listen_chan)
8574                 return;
8575
8576         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8577                 return;
8578
8579         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8580         for (i = 0, cand = 0; i < num; i++) {
8581                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8582                 if (curr_chan == chan) {
8583                         cand = 0;
8584                         break;
8585                 }
8586
8587                 if (chan == 1 || chan == 6 || chan == 11)
8588                         cand = chan;
8589         }
8590
8591         if (cand) {
8592                 wpa_dbg(wpa_s, MSG_DEBUG,
8593                         "P2P: Update Listen channel to %u based on operating channel",
8594                         cand);
8595                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8596         }
8597 }
8598
8599
8600 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8601 {
8602         struct hostapd_config *conf;
8603         struct p2p_go_neg_results params;
8604         struct csa_settings csa_settings;
8605         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8606         int old_freq = current_ssid->frequency;
8607         int ret;
8608
8609         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8610                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8611                 return -1;
8612         }
8613
8614         /*
8615          * TODO: This function may not always work correctly. For example,
8616          * when we have a running GO and a BSS on a DFS channel.
8617          */
8618         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, NULL)) {
8619                 wpa_dbg(wpa_s, MSG_DEBUG,
8620                         "P2P CSA: Failed to select new frequency for GO");
8621                 return -1;
8622         }
8623
8624         if (current_ssid->frequency == params.freq) {
8625                 wpa_dbg(wpa_s, MSG_DEBUG,
8626                         "P2P CSA: Selected same frequency - not moving GO");
8627                 return 0;
8628         }
8629
8630         conf = hostapd_config_defaults();
8631         if (!conf) {
8632                 wpa_dbg(wpa_s, MSG_DEBUG,
8633                         "P2P CSA: Failed to allocate default config");
8634                 return -1;
8635         }
8636
8637         current_ssid->frequency = params.freq;
8638         if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
8639                 wpa_dbg(wpa_s, MSG_DEBUG,
8640                         "P2P CSA: Failed to create new GO config");
8641                 ret = -1;
8642                 goto out;
8643         }
8644
8645         if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
8646                 wpa_dbg(wpa_s, MSG_DEBUG,
8647                         "P2P CSA: CSA to a different band is not supported");
8648                 ret = -1;
8649                 goto out;
8650         }
8651
8652         os_memset(&csa_settings, 0, sizeof(csa_settings));
8653         csa_settings.cs_count = P2P_GO_CSA_COUNT;
8654         csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
8655         csa_settings.freq_params.freq = params.freq;
8656         csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
8657         csa_settings.freq_params.ht_enabled = conf->ieee80211n;
8658         csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
8659
8660         if (conf->ieee80211ac) {
8661                 int freq1 = 0, freq2 = 0;
8662                 u8 chan, opclass;
8663
8664                 if (ieee80211_freq_to_channel_ext(params.freq,
8665                                                   conf->secondary_channel,
8666                                                   conf->vht_oper_chwidth,
8667                                                   &opclass, &chan) ==
8668                     NUM_HOSTAPD_MODES) {
8669                         wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
8670                         ret = -1;
8671                         goto out;
8672                 }
8673
8674                 if (conf->vht_oper_centr_freq_seg0_idx)
8675                         freq1 = ieee80211_chan_to_freq(
8676                                 NULL, opclass,
8677                                 conf->vht_oper_centr_freq_seg0_idx);
8678
8679                 if (conf->vht_oper_centr_freq_seg1_idx)
8680                         freq2 = ieee80211_chan_to_freq(
8681                                 NULL, opclass,
8682                                 conf->vht_oper_centr_freq_seg1_idx);
8683
8684                 if (freq1 < 0 || freq2 < 0) {
8685                         wpa_dbg(wpa_s, MSG_DEBUG,
8686                                 "P2P CSA: Selected invalid VHT center freqs");
8687                         ret = -1;
8688                         goto out;
8689                 }
8690
8691                 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
8692                 csa_settings.freq_params.center_freq1 = freq1;
8693                 csa_settings.freq_params.center_freq2 = freq2;
8694
8695                 switch (conf->vht_oper_chwidth) {
8696                 case VHT_CHANWIDTH_80MHZ:
8697                 case VHT_CHANWIDTH_80P80MHZ:
8698                         csa_settings.freq_params.bandwidth = 80;
8699                         break;
8700                 case VHT_CHANWIDTH_160MHZ:
8701                         csa_settings.freq_params.bandwidth = 160;
8702                         break;
8703                 }
8704         }
8705
8706         ret = ap_switch_channel(wpa_s, &csa_settings);
8707 out:
8708         current_ssid->frequency = old_freq;
8709         hostapd_config_free(conf);
8710         return ret;
8711 }
8712
8713
8714 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8715 {
8716         struct p2p_go_neg_results params;
8717         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8718
8719         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8720
8721         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8722                 current_ssid->frequency);
8723
8724         /* Stop the AP functionality */
8725         /* TODO: Should do this in a way that does not indicated to possible
8726          * P2P Clients in the group that the group is terminated. */
8727         wpa_supplicant_ap_deinit(wpa_s);
8728
8729         /* Reselect the GO frequency */
8730         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, NULL)) {
8731                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8732                 wpas_p2p_group_delete(wpa_s,
8733                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8734                 return;
8735         }
8736         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8737                 params.freq);
8738
8739         if (params.freq &&
8740             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8741                 wpa_printf(MSG_DEBUG,
8742                            "P2P: Selected freq (%u MHz) is not valid for P2P",
8743                            params.freq);
8744                 wpas_p2p_group_delete(wpa_s,
8745                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8746                 return;
8747         }
8748
8749         /* Update the frequency */
8750         current_ssid->frequency = params.freq;
8751         wpa_s->connect_without_scan = current_ssid;
8752         wpa_s->reassociate = 1;
8753         wpa_s->disconnected = 0;
8754         wpa_supplicant_req_scan(wpa_s, 0, 0);
8755 }
8756
8757
8758 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8759 {
8760         struct wpa_supplicant *wpa_s = eloop_ctx;
8761
8762         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8763                 return;
8764
8765         wpas_p2p_go_update_common_freqs(wpa_s);
8766
8767         /* Do not move GO in the middle of a CSA */
8768         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8769                 wpa_printf(MSG_DEBUG,
8770                            "P2P: CSA is in progress - not moving GO");
8771                 return;
8772         }
8773
8774         /*
8775          * First, try a channel switch flow. If it is not supported or fails,
8776          * take down the GO and bring it up again.
8777          */
8778         if (wpas_p2p_move_go_csa(wpa_s) < 0)
8779                 wpas_p2p_move_go_no_csa(wpa_s);
8780 }
8781
8782
8783 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
8784 {
8785         struct wpa_supplicant *wpa_s = eloop_ctx;
8786         struct wpa_used_freq_data *freqs = NULL;
8787         unsigned int num = wpa_s->num_multichan_concurrent;
8788
8789         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8790         if (!freqs)
8791                 return;
8792
8793         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8794
8795         /* Previous attempt to move a GO was not possible -- try again. */
8796         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
8797                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
8798
8799         os_free(freqs);
8800 }
8801
8802
8803 /*
8804  * Consider moving a GO from its currently used frequency:
8805  * 1. It is possible that due to regulatory consideration the frequency
8806  *    can no longer be used and there is a need to evacuate the GO.
8807  * 2. It is possible that due to MCC considerations, it would be preferable
8808  *    to move the GO to a channel that is currently used by some other
8809  *    station interface.
8810  *
8811  * In case a frequency that became invalid is once again valid, cancel a
8812  * previously initiated GO frequency change.
8813  */
8814 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
8815                                             struct wpa_used_freq_data *freqs,
8816                                             unsigned int num)
8817 {
8818         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
8819         unsigned int timeout;
8820         int freq;
8821
8822         wpas_p2p_go_update_common_freqs(wpa_s);
8823
8824         freq = wpa_s->current_ssid->frequency;
8825         for (i = 0, invalid_freq = 0; i < num; i++) {
8826                 if (freqs[i].freq == freq) {
8827                         flags = freqs[i].flags;
8828
8829                         /* The channel is invalid, must change it */
8830                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
8831                                 wpa_dbg(wpa_s, MSG_DEBUG,
8832                                         "P2P: Freq=%d MHz no longer valid for GO",
8833                                         freq);
8834                                 invalid_freq = 1;
8835                         }
8836                 } else if (freqs[i].flags == 0) {
8837                         /* Freq is not used by any other station interface */
8838                         continue;
8839                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
8840                                                freqs[i].freq)) {
8841                         /* Freq is not valid for P2P use cases */
8842                         continue;
8843                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8844                            P2P_GO_FREQ_MOVE_SCM) {
8845                         policy_move = 1;
8846                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8847                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
8848                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
8849                         policy_move = 1;
8850                 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
8851                             P2P_GO_FREQ_MOVE_SCM_ECSA) &&
8852                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
8853                         if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
8854                                 policy_move = 1;
8855                         } else if ((wpa_s->drv_flags &
8856                                     WPA_DRIVER_FLAGS_AP_CSA) &&
8857                                    wpas_p2p_go_clients_support_ecsa(wpa_s)) {
8858                                 u8 chan;
8859
8860                                 /*
8861                                  * We do not support CSA between bands, so move
8862                                  * GO only within the same band.
8863                                  */
8864                                 if (wpa_s->ap_iface->current_mode->mode ==
8865                                     ieee80211_freq_to_chan(freqs[i].freq,
8866                                                            &chan))
8867                                         policy_move = 1;
8868                         }
8869                 }
8870         }
8871
8872         wpa_dbg(wpa_s, MSG_DEBUG,
8873                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
8874                 invalid_freq, policy_move, flags);
8875
8876         /*
8877          * The channel is valid, or we are going to have a policy move, so
8878          * cancel timeout.
8879          */
8880         if (!invalid_freq || policy_move) {
8881                 wpa_dbg(wpa_s, MSG_DEBUG,
8882                         "P2P: Cancel a GO move from freq=%d MHz", freq);
8883                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
8884
8885                 if (wpas_p2p_in_progress(wpa_s)) {
8886                         wpa_dbg(wpa_s, MSG_DEBUG,
8887                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
8888                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
8889                                              wpa_s, NULL);
8890                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
8891                                                wpas_p2p_reconsider_moving_go,
8892                                                wpa_s, NULL);
8893                         return;
8894                 }
8895         }
8896
8897         if (!invalid_freq && (!policy_move || flags != 0)) {
8898                 wpa_dbg(wpa_s, MSG_DEBUG,
8899                         "P2P: Not initiating a GO frequency change");
8900                 return;
8901         }
8902
8903         /*
8904          * Do not consider moving GO if it is in the middle of a CSA. When the
8905          * CSA is finished this flow should be retriggered.
8906          */
8907         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8908                 wpa_dbg(wpa_s, MSG_DEBUG,
8909                         "P2P: Not initiating a GO frequency change - CSA is in progress");
8910                 return;
8911         }
8912
8913         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
8914                 timeout = P2P_GO_FREQ_CHANGE_TIME;
8915         else
8916                 timeout = 0;
8917
8918         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
8919                 freq, timeout);
8920         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
8921         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
8922 }
8923
8924
8925 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
8926                                          struct wpa_used_freq_data *freqs,
8927                                          unsigned int num,
8928                                          enum wpas_p2p_channel_update_trig trig)
8929 {
8930         struct wpa_supplicant *ifs;
8931
8932         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
8933                              NULL);
8934
8935         /*
8936          * Travers all the radio interfaces, and for each GO interface, check
8937          * if there is a need to move the GO from the frequency it is using,
8938          * or in case the frequency is valid again, cancel the evacuation flow.
8939          */
8940         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
8941                          radio_list) {
8942                 if (ifs->current_ssid == NULL ||
8943                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
8944                         continue;
8945
8946                 /*
8947                  * The GO was just started or completed channel switch, no need
8948                  * to move it.
8949                  */
8950                 if (wpa_s == ifs &&
8951                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
8952                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
8953                         wpa_dbg(wpa_s, MSG_DEBUG,
8954                                 "P2P: GO move - schedule re-consideration");
8955                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
8956                                                wpas_p2p_reconsider_moving_go,
8957                                                wpa_s, NULL);
8958                         continue;
8959                 }
8960
8961                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
8962         }
8963 }
8964
8965
8966 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
8967 {
8968         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8969                 return;
8970
8971         wpas_p2p_update_channel_list(wpa_s,
8972                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
8973 }
8974
8975
8976 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
8977 {
8978         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
8979                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
8980                         "the management interface is being removed");
8981                 wpas_p2p_deinit_global(wpa_s->global);
8982         }
8983 }
8984
8985
8986 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
8987 {
8988         if (wpa_s->ap_iface->bss)
8989                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
8990         wpas_p2p_group_deinit(wpa_s);
8991 }