wpa_supplicant/p2p_supplicant.c

   1 /*
   2  * wpa_supplicant - P2P
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi>
   5  *
   6  * This software may be distributed under the terms of the BSD license.
   7  * See README for more details.
   8  */
   9
  10 #include "includes.h"
  11
  12 #include "common.h"
  13 #include "eloop.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/wpa_ctrl.h"
  17 #include "wps/wps_i.h"
  18 #include "p2p/p2p.h"
  19 #include "ap/hostapd.h"
  20 #include "ap/ap_config.h"
  21 #include "ap/sta_info.h"
  22 #include "ap/ap_drv_ops.h"
  23 #include "ap/wps_hostapd.h"
  24 #include "ap/p2p_hostapd.h"
  25 #include "ap/dfs.h"
  26 #include "eapol_supp/eapol_supp_sm.h"
  27 #include "rsn_supp/wpa.h"
  28 #include "wpa_supplicant_i.h"
  29 #include "driver_i.h"
  30 #include "ap.h"
  31 #include "config_ssid.h"
  32 #include "config.h"
  33 #include "notify.h"
  34 #include "scan.h"
  35 #include "bss.h"
  36 #include "offchannel.h"
  37 #include "wps_supplicant.h"
  38 #include "p2p_supplicant.h"
  39 #include "wifi_display.h"
  40
  41
  42 /*
  43  * How many times to try to scan to find the GO before giving up on join
  44  * request.
  45  */
  46 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  47
  48 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
  49
  50 /**
  51  * Defines time interval in seconds when a GO needs to evacuate a frequency that
  52  * it is currently using, but is no longer valid for P2P use cases.
  53  */
  54 #define P2P_GO_FREQ_CHANGE_TIME 5
  55
  56 /**
  57  * Defines CSA parameters which are used when GO evacuates the no longer valid
  58  * channel (and if the driver supports channel switch).
  59  */
  60 #define P2P_GO_CSA_COUNT 7
  61 #define P2P_GO_CSA_BLOCK_TX 0
  62
  63 #ifndef P2P_MAX_CLIENT_IDLE
  64 /*
  65  * How many seconds to try to reconnect to the GO when connection in P2P client
  66  * role has been lost.
  67  */
  68 #define P2P_MAX_CLIENT_IDLE 10
  69 #endif /* P2P_MAX_CLIENT_IDLE */
  70
  71 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  72 /*
  73  * How many seconds to wait for initial 4-way handshake to get completed after
  74  * WPS provisioning step or after the re-invocation of a persistent group on a
  75  * P2P Client.
  76  */
  77 #define P2P_MAX_INITIAL_CONN_WAIT 10
  78 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  79
  80 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
  81 /*
  82  * How many seconds to wait for initial 4-way handshake to get completed after
  83  * WPS provisioning step on the GO. This controls the extra time the P2P
  84  * operation is considered to be in progress (e.g., to delay other scans) after
  85  * WPS provisioning has been completed on the GO during group formation.
  86  */
  87 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
  88 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
  89
  90 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
  91 /*
  92  * How many seconds to wait for initial 4-way handshake to get completed after
  93  * re-invocation of a persistent group on the GO when the client is expected
  94  * to connect automatically (no user interaction).
  95  */
  96 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
  97 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
  98
  99 #define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"
 100
 101 /*
 102  * How many seconds to wait to re-attempt to move GOs, in case previous attempt
 103  * was not possible.
 104  */
 105 #define P2P_RECONSIDER_GO_MOVE_DELAY 30
 106
 107 enum p2p_group_removal_reason {
 108         P2P_GROUP_REMOVAL_UNKNOWN,
 109         P2P_GROUP_REMOVAL_SILENT,
 110         P2P_GROUP_REMOVAL_FORMATION_FAILED,
 111         P2P_GROUP_REMOVAL_REQUESTED,
 112         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
 113         P2P_GROUP_REMOVAL_UNAVAILABLE,
 114         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
 115         P2P_GROUP_REMOVAL_PSK_FAILURE,
 116         P2P_GROUP_REMOVAL_FREQ_CONFLICT,
 117         P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL
 118 };
 119
 120
 121 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
 122 static struct wpa_supplicant *
 123 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
 124                          int go);
 125 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
 126                                const u8 *ssid, size_t ssid_len);
 127 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
 128                                 int *force_freq, int *pref_freq, int go,
 129                                 unsigned int *pref_freq_list,
 130                                 unsigned int *num_pref_freq);
 131 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 132                                    const u8 *ssid, size_t ssid_len);
 133 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 134 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 135                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 136                          int auto_join, int freq,
 137                          const u8 *ssid, size_t ssid_len);
 138 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 139 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 140 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 141 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 142 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 143                                              void *timeout_ctx);
 144 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 145 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 146                                        int group_added);
 147 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 148 static void wpas_stop_listen(void *ctx);
 149 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
 150 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
 151 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 152                                         enum wpa_driver_if_type type);
 153 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
 154                                             int already_deleted);
 155 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
 156                                              struct wpa_used_freq_data *freqs,
 157                                              unsigned int num);
 158 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx);
 159 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq);
 160 static void
 161 wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
 162                              struct wpa_used_freq_data *freqs, unsigned int num,
 163                              enum wpas_p2p_channel_update_trig trig);
 164 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx);
 165
 166
 167 /*
 168  * Get the number of concurrent channels that the HW can operate, but that are
 169  * currently not in use by any of the wpa_supplicant interfaces.
 170  */
 171 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 172 {
 173         int *freqs;
 174         int num, unused;
 175
 176         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 177         if (!freqs)
 178                 return -1;
 179
 180         num = get_shared_radio_freqs(wpa_s, freqs,
 181                                      wpa_s->num_multichan_concurrent);
 182         os_free(freqs);
 183
 184         unused = wpa_s->num_multichan_concurrent - num;
 185         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 186         return unused;
 187 }
 188
 189
 190 /*
 191  * Get the frequencies that are currently in use by one or more of the virtual
 192  * interfaces, and that are also valid for P2P operation.
 193  */
 194 static unsigned int
 195 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 196                           struct wpa_used_freq_data *p2p_freqs,
 197                           unsigned int len)
 198 {
 199         struct wpa_used_freq_data *freqs;
 200         unsigned int num, i, j;
 201
 202         freqs = os_calloc(wpa_s->num_multichan_concurrent,
 203                           sizeof(struct wpa_used_freq_data));
 204         if (!freqs)
 205                 return 0;
 206
 207         num = get_shared_radio_freqs_data(wpa_s, freqs,
 208                                           wpa_s->num_multichan_concurrent);
 209
 210         os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
 211
 212         for (i = 0, j = 0; i < num && j < len; i++) {
 213                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
 214                         p2p_freqs[j++] = freqs[i];
 215         }
 216
 217         os_free(freqs);
 218
 219         dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
 220
 221         return j;
 222 }
 223
 224
 225 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 226                                              int freq)
 227 {
 228         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 229                 return;
 230
 231         /* Use the wpa_s used to control the P2P Device operation */
 232         wpa_s = wpa_s->global->p2p_init_wpa_s;
 233
 234         if (wpa_s->conf->p2p_ignore_shared_freq &&
 235             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 236             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 237                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 238                            freq);
 239                 freq = 0;
 240         }
 241         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 242 }
 243
 244
 245 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 246                                       struct wpa_scan_results *scan_res)
 247 {
 248         size_t i;
 249
 250         if (wpa_s->p2p_scan_work) {
 251                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 252                 wpa_s->p2p_scan_work = NULL;
 253                 radio_work_done(work);
 254         }
 255
 256         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 257                 return;
 258
 259         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 260                    (int) scan_res->num);
 261
 262         for (i = 0; i < scan_res->num; i++) {
 263                 struct wpa_scan_res *bss = scan_res->res[i];
 264                 struct os_reltime time_tmp_age, entry_ts;
 265                 const u8 *ies;
 266                 size_t ies_len;
 267
 268                 time_tmp_age.sec = bss->age / 1000;
 269                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 270                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 271
 272                 ies = (const u8 *) (bss + 1);
 273                 ies_len = bss->ie_len;
 274                 if (bss->beacon_ie_len > 0 &&
 275                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 276                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 277                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 278                                    MACSTR, MAC2STR(bss->bssid));
 279                         ies = ies + ies_len;
 280                         ies_len = bss->beacon_ie_len;
 281                 }
 282
 283
 284                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 285                                          bss->freq, &entry_ts, bss->level,
 286                                          ies, ies_len) > 0)
 287                         break;
 288         }
 289
 290         p2p_scan_res_handled(wpa_s->global->p2p);
 291 }
 292
 293
 294 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 295 {
 296         struct wpa_supplicant *wpa_s = work->wpa_s;
 297         struct wpa_driver_scan_params *params = work->ctx;
 298         int ret;
 299
 300         if (deinit) {
 301                 if (!work->started) {
 302                         wpa_scan_free_params(params);
 303                         return;
 304                 }
 305
 306                 wpa_s->p2p_scan_work = NULL;
 307                 return;
 308         }
 309
 310         ret = wpa_drv_scan(wpa_s, params);
 311         wpa_scan_free_params(params);
 312         work->ctx = NULL;
 313         if (ret) {
 314                 radio_work_done(work);
 315                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 316                 return;
 317         }
 318
 319         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 320         os_get_reltime(&wpa_s->scan_trigger_time);
 321         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 322         wpa_s->own_scan_requested = 1;
 323         wpa_s->p2p_scan_work = work;
 324 }
 325
 326
 327 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 328                                           int freq)
 329 {
 330         if (wpa_s->global->p2p_24ghz_social_channels &&
 331             (freq == 2412 || freq == 2437 || freq == 2462)) {
 332                 /*
 333                  * Search all social channels regardless of whether these have
 334                  * been disabled for P2P operating channel use to avoid missing
 335                  * peers.
 336                  */
 337                 return 1;
 338         }
 339         return p2p_supported_freq(wpa_s->global->p2p, freq);
 340 }
 341
 342
 343 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 344                          unsigned int num_req_dev_types,
 345                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 346 {
 347         struct wpa_supplicant *wpa_s = ctx;
 348         struct wpa_driver_scan_params *params = NULL;
 349         struct wpabuf *wps_ie, *ies;
 350         unsigned int num_channels = 0;
 351         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 352         size_t ielen;
 353         u8 *n, i;
 354
 355         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 356                 return -1;
 357
 358         if (wpa_s->p2p_scan_work) {
 359                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 360                 return -1;
 361         }
 362
 363         params = os_zalloc(sizeof(*params));
 364         if (params == NULL)
 365                 return -1;
 366
 367         /* P2P Wildcard SSID */
 368         params->num_ssids = 1;
 369         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 370         if (n == NULL)
 371                 goto fail;
 372         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 373         params->ssids[0].ssid = n;
 374         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 375
 376         wpa_s->wps->dev.p2p = 1;
 377         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 378                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 379                                         num_req_dev_types, req_dev_types);
 380         if (wps_ie == NULL)
 381                 goto fail;
 382
 383         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 384         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 385         if (ies == NULL) {
 386                 wpabuf_free(wps_ie);
 387                 goto fail;
 388         }
 389         wpabuf_put_buf(ies, wps_ie);
 390         wpabuf_free(wps_ie);
 391
 392         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 393
 394         params->p2p_probe = 1;
 395         n = os_malloc(wpabuf_len(ies));
 396         if (n == NULL) {
 397                 wpabuf_free(ies);
 398                 goto fail;
 399         }
 400         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 401         params->extra_ies = n;
 402         params->extra_ies_len = wpabuf_len(ies);
 403         wpabuf_free(ies);
 404
 405         switch (type) {
 406         case P2P_SCAN_SOCIAL:
 407                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 408                                           sizeof(int));
 409                 if (params->freqs == NULL)
 410                         goto fail;
 411                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 412                         if (wpas_p2p_search_social_channel(
 413                                     wpa_s, social_channels_freq[i]))
 414                                 params->freqs[num_channels++] =
 415                                         social_channels_freq[i];
 416                 }
 417                 params->freqs[num_channels++] = 0;
 418                 break;
 419         case P2P_SCAN_FULL:
 420                 break;
 421         case P2P_SCAN_SPECIFIC:
 422                 params->freqs = os_calloc(2, sizeof(int));
 423                 if (params->freqs == NULL)
 424                         goto fail;
 425                 params->freqs[0] = freq;
 426                 params->freqs[1] = 0;
 427                 break;
 428         case P2P_SCAN_SOCIAL_PLUS_ONE:
 429                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 430                                           sizeof(int));
 431                 if (params->freqs == NULL)
 432                         goto fail;
 433                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 434                         if (wpas_p2p_search_social_channel(
 435                                     wpa_s, social_channels_freq[i]))
 436                                 params->freqs[num_channels++] =
 437                                         social_channels_freq[i];
 438                 }
 439                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 440                         params->freqs[num_channels++] = freq;
 441                 params->freqs[num_channels++] = 0;
 442                 break;
 443         }
 444
 445         radio_remove_works(wpa_s, "p2p-scan", 0);
 446         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 447                            params) < 0)
 448                 goto fail;
 449         return 0;
 450
 451 fail:
 452         wpa_scan_free_params(params);
 453         return -1;
 454 }
 455
 456
 457 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 458 {
 459         switch (p2p_group_interface) {
 460         case P2P_GROUP_INTERFACE_PENDING:
 461                 return WPA_IF_P2P_GROUP;
 462         case P2P_GROUP_INTERFACE_GO:
 463                 return WPA_IF_P2P_GO;
 464         case P2P_GROUP_INTERFACE_CLIENT:
 465                 return WPA_IF_P2P_CLIENT;
 466         }
 467
 468         return WPA_IF_P2P_GROUP;
 469 }
 470
 471
 472 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 473                                                   const u8 *ssid,
 474                                                   size_t ssid_len, int *go)
 475 {
 476         struct wpa_ssid *s;
 477
 478         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 479                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 480                         if (s->disabled != 0 || !s->p2p_group ||
 481                             s->ssid_len != ssid_len ||
 482                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 483                                 continue;
 484                         if (s->mode == WPAS_MODE_P2P_GO &&
 485                             s != wpa_s->current_ssid)
 486                                 continue;
 487                         if (go)
 488                                 *go = s->mode == WPAS_MODE_P2P_GO;
 489                         return wpa_s;
 490                 }
 491         }
 492
 493         return NULL;
 494 }
 495
 496
 497 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 498 {
 499         struct wpa_supplicant *wpa_s = eloop_ctx;
 500         wpa_printf(MSG_DEBUG,
 501                    "P2P: Complete previously requested removal of %s",
 502                    wpa_s->ifname);
 503         wpas_p2p_disconnect(wpa_s);
 504 }
 505
 506
 507 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 508                                       struct wpa_supplicant *calling_wpa_s)
 509 {
 510         if (calling_wpa_s == wpa_s && wpa_s &&
 511             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 512                 /*
 513                  * The calling wpa_s instance is going to be removed. Do that
 514                  * from an eloop callback to keep the instance available until
 515                  * the caller has returned. This my be needed, e.g., to provide
 516                  * control interface responses on the per-interface socket.
 517                  */
 518                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 519                                            wpa_s, NULL) < 0)
 520                         return -1;
 521                 return 0;
 522         }
 523
 524         return wpas_p2p_disconnect(wpa_s);
 525 }
 526
 527
 528 /* Determine total number of clients in active groups where we are the GO */
 529 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 530 {
 531         unsigned int count = 0;
 532         struct wpa_ssid *s;
 533
 534         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 535                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 536                         wpa_printf(MSG_DEBUG,
 537                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 538                                    wpa_s, s, s->disabled, s->p2p_group,
 539                                    s->mode);
 540                         if (!s->disabled && s->p2p_group &&
 541                             s->mode == WPAS_MODE_P2P_GO) {
 542                                 count += p2p_get_group_num_members(
 543                                         wpa_s->p2p_group);
 544                         }
 545                 }
 546         }
 547
 548         return count;
 549 }
 550
 551
 552 static unsigned int p2p_is_active_persistent_group(struct wpa_supplicant *wpa_s)
 553 {
 554         return !wpa_s->p2p_mgmt && wpa_s->current_ssid &&
 555                 !wpa_s->current_ssid->disabled &&
 556                 wpa_s->current_ssid->p2p_group &&
 557                 wpa_s->current_ssid->p2p_persistent_group;
 558 }
 559
 560
 561 static unsigned int p2p_is_active_persistent_go(struct wpa_supplicant *wpa_s)
 562 {
 563         return p2p_is_active_persistent_group(wpa_s) &&
 564                 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO;
 565 }
 566
 567
 568 /* Find an interface for a P2P group where we are the GO */
 569 static struct wpa_supplicant *
 570 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 571 {
 572         struct wpa_supplicant *save = NULL;
 573
 574         if (!wpa_s)
 575                 return NULL;
 576
 577         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 578                 if (!p2p_is_active_persistent_go(wpa_s))
 579                         continue;
 580
 581                 /* Prefer a group with connected clients */
 582                 if (p2p_get_group_num_members(wpa_s->p2p_group))
 583                         return wpa_s;
 584                 save = wpa_s;
 585         }
 586
 587         /* No group with connected clients, so pick the one without (if any) */
 588         return save;
 589 }
 590
 591
 592 static unsigned int p2p_is_active_persistent_cli(struct wpa_supplicant *wpa_s)
 593 {
 594         return p2p_is_active_persistent_group(wpa_s) &&
 595                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
 596 }
 597
 598
 599 /* Find an interface for a P2P group where we are the P2P Client */
 600 static struct wpa_supplicant *
 601 wpas_p2p_get_cli_group(struct wpa_supplicant *wpa_s)
 602 {
 603         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 604                 if (p2p_is_active_persistent_cli(wpa_s))
 605                         return wpa_s;
 606         }
 607
 608         return NULL;
 609 }
 610
 611
 612 /* Find a persistent group where we are the GO */
 613 static struct wpa_ssid *
 614 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
 615 {
 616         struct wpa_ssid *s;
 617
 618         for (s = wpa_s->conf->ssid; s; s = s->next) {
 619                 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
 620                         return s;
 621         }
 622
 623         return NULL;
 624 }
 625
 626
 627 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role,
 628                                 unsigned int *force_freq,
 629                                 unsigned int *pref_freq)
 630 {
 631         struct wpa_supplicant *wpa_s = ctx;
 632         struct wpa_ssid *s;
 633         u8 conncap = P2PS_SETUP_NONE;
 634         unsigned int owned_members = 0;
 635         struct wpa_supplicant *go_wpa_s, *cli_wpa_s;
 636         struct wpa_ssid *persistent_go;
 637         int p2p_no_group_iface;
 638         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
 639
 640         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 641
 642         if (force_freq)
 643                 *force_freq = 0;
 644         if (pref_freq)
 645                 *pref_freq = 0;
 646
 647         size = P2P_MAX_PREF_CHANNELS;
 648         if (force_freq && pref_freq &&
 649             !wpas_p2p_setup_freqs(wpa_s, 0, (int *) force_freq,
 650                                   (int *) pref_freq, 0, pref_freq_list, &size))
 651                 wpas_p2p_set_own_freq_preference(wpa_s,
 652                                                  *force_freq ? *force_freq :
 653                                                  *pref_freq);
 654
 655         /*
 656          * For non-concurrent capable devices:
 657          * If persistent_go, then no new.
 658          * If GO, then no client.
 659          * If client, then no GO.
 660          */
 661         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 662         if (go_wpa_s)
 663                 owned_members = p2p_get_group_num_members(go_wpa_s->p2p_group);
 664         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 665         p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s);
 666         cli_wpa_s = wpas_p2p_get_cli_group(wpa_s);
 667
 668         wpa_printf(MSG_DEBUG,
 669                    "P2P: GO(iface)=%p members=%u CLI(iface)=%p persistent(ssid)=%p",
 670                    go_wpa_s, owned_members, cli_wpa_s, persistent_go);
 671
 672         /* If not concurrent, restrict our choices */
 673         if (p2p_no_group_iface) {
 674                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 675
 676                 if (cli_wpa_s)
 677                         return P2PS_SETUP_NONE;
 678
 679                 if (go_wpa_s) {
 680                         if (role == P2PS_SETUP_CLIENT ||
 681                             incoming == P2PS_SETUP_GROUP_OWNER ||
 682                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 683                                 return P2PS_SETUP_NONE;
 684
 685                         return P2PS_SETUP_GROUP_OWNER;
 686                 }
 687
 688                 if (persistent_go) {
 689                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 690                                 if (!incoming)
 691                                         return P2PS_SETUP_GROUP_OWNER |
 692                                                 P2PS_SETUP_CLIENT;
 693                                 if (incoming == P2PS_SETUP_NEW) {
 694                                         u8 r;
 695
 696                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 697                                             (r & 1))
 698                                                 return P2PS_SETUP_CLIENT;
 699                                         return P2PS_SETUP_GROUP_OWNER;
 700                                 }
 701                         }
 702                 }
 703         }
 704
 705         /* If a required role has been specified, handle it here */
 706         if (role && role != P2PS_SETUP_NEW) {
 707                 switch (incoming) {
 708                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 709                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 710                         /*
 711                          * Peer has an active GO, so if the role allows it and
 712                          * we do not have any active roles, become client.
 713                          */
 714                         if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s &&
 715                             !cli_wpa_s)
 716                                 return P2PS_SETUP_CLIENT;
 717
 718                         /* fall through */
 719
 720                 case P2PS_SETUP_NONE:
 721                 case P2PS_SETUP_NEW:
 722                         conncap = role;
 723                         goto grp_owner;
 724
 725                 case P2PS_SETUP_GROUP_OWNER:
 726                         /*
 727                          * Must be a complimentary role - cannot be a client to
 728                          * more than one peer.
 729                          */
 730                         if (incoming == role || cli_wpa_s)
 731                                 return P2PS_SETUP_NONE;
 732
 733                         return P2PS_SETUP_CLIENT;
 734
 735                 case P2PS_SETUP_CLIENT:
 736                         /* Must be a complimentary role */
 737                         if (incoming != role) {
 738                                 conncap = P2PS_SETUP_GROUP_OWNER;
 739                                 goto grp_owner;
 740                         }
 741
 742                 default:
 743                         return P2PS_SETUP_NONE;
 744                 }
 745         }
 746
 747         /*
 748          * For now, we only will support ownership of one group, and being a
 749          * client of one group. Therefore, if we have either an existing GO
 750          * group, or an existing client group, we will not do a new GO
 751          * negotiation, but rather try to re-use the existing groups.
 752          */
 753         switch (incoming) {
 754         case P2PS_SETUP_NONE:
 755         case P2PS_SETUP_NEW:
 756                 if (cli_wpa_s)
 757                         conncap = P2PS_SETUP_GROUP_OWNER;
 758                 else if (!owned_members)
 759                         conncap = P2PS_SETUP_NEW;
 760                 else if (incoming == P2PS_SETUP_NONE)
 761                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 762                 else
 763                         conncap = P2PS_SETUP_CLIENT;
 764                 break;
 765
 766         case P2PS_SETUP_CLIENT:
 767                 conncap = P2PS_SETUP_GROUP_OWNER;
 768                 break;
 769
 770         case P2PS_SETUP_GROUP_OWNER:
 771                 if (!cli_wpa_s)
 772                         conncap = P2PS_SETUP_CLIENT;
 773                 break;
 774
 775         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 776         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 777                 if (cli_wpa_s)
 778                         conncap = P2PS_SETUP_GROUP_OWNER;
 779                 else {
 780                         u8 r;
 781
 782                         if (os_get_random(&r, sizeof(r)) < 0 ||
 783                             (r & 1))
 784                                 conncap = P2PS_SETUP_CLIENT;
 785                         else
 786                                 conncap = P2PS_SETUP_GROUP_OWNER;
 787                 }
 788                 break;
 789
 790         default:
 791                 return P2PS_SETUP_NONE;
 792         }
 793
 794 grp_owner:
 795         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 796             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 797                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 798                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 799
 800                 s = wpas_p2p_get_persistent_go(wpa_s);
 801                 if (!s && !go_wpa_s && p2p_no_group_iface) {
 802                         p2p_set_intended_addr(wpa_s->global->p2p,
 803                                               wpa_s->own_addr);
 804                 } else if (!s && !go_wpa_s) {
 805                         if (wpas_p2p_add_group_interface(wpa_s,
 806                                                          WPA_IF_P2P_GO) < 0) {
 807                                 wpa_printf(MSG_ERROR,
 808                                            "P2P: Failed to allocate a new interface for the group");
 809                                 return P2PS_SETUP_NONE;
 810                         }
 811                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 812                         p2p_set_intended_addr(wpa_s->global->p2p,
 813                                               wpa_s->pending_interface_addr);
 814                 }
 815         }
 816
 817         return conncap;
 818 }
 819
 820
 821 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 822                                  enum p2p_group_removal_reason removal_reason)
 823 {
 824         struct wpa_ssid *ssid;
 825         char *gtype;
 826         const char *reason;
 827
 828         ssid = wpa_s->current_ssid;
 829         if (ssid == NULL) {
 830                 /*
 831                  * The current SSID was not known, but there may still be a
 832                  * pending P2P group interface waiting for provisioning or a
 833                  * P2P group that is trying to reconnect.
 834                  */
 835                 ssid = wpa_s->conf->ssid;
 836                 while (ssid) {
 837                         if (ssid->p2p_group && ssid->disabled != 2)
 838                                 break;
 839                         ssid = ssid->next;
 840                 }
 841                 if (ssid == NULL &&
 842                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 843                 {
 844                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 845                                    "not found");
 846                         return -1;
 847                 }
 848         }
 849         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 850                 gtype = "GO";
 851         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 852                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 853                 wpa_s->reassociate = 0;
 854                 wpa_s->disconnected = 1;
 855                 gtype = "client";
 856         } else
 857                 gtype = "GO";
 858
 859         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 860                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 861
 862         if (os_strcmp(gtype, "client") == 0) {
 863                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 864                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 865                                                 wpa_s, NULL)) {
 866                         wpa_printf(MSG_DEBUG,
 867                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 868                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 869                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 870                                              wpa_s, NULL);
 871                 }
 872         }
 873
 874         if (wpa_s->cross_connect_in_use) {
 875                 wpa_s->cross_connect_in_use = 0;
 876                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 877                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 878                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 879         }
 880         switch (removal_reason) {
 881         case P2P_GROUP_REMOVAL_REQUESTED:
 882                 reason = " reason=REQUESTED";
 883                 break;
 884         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 885                 reason = " reason=FORMATION_FAILED";
 886                 break;
 887         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 888                 reason = " reason=IDLE";
 889                 break;
 890         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 891                 reason = " reason=UNAVAILABLE";
 892                 break;
 893         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 894                 reason = " reason=GO_ENDING_SESSION";
 895                 break;
 896         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 897                 reason = " reason=PSK_FAILURE";
 898                 break;
 899         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 900                 reason = " reason=FREQ_CONFLICT";
 901                 break;
 902         default:
 903                 reason = "";
 904                 break;
 905         }
 906         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 907                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 908                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 909                                wpa_s->ifname, gtype, reason);
 910         }
 911
 912         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 913                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 914         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 915                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 916         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 917                                  wpa_s->parent, NULL) > 0) {
 918                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 919                            "timeout");
 920                 wpa_s->p2p_in_provisioning = 0;
 921                 wpas_p2p_group_formation_failed(wpa_s, 1);
 922         }
 923
 924         wpa_s->p2p_in_invitation = 0;
 925         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
 926         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
 927
 928         /*
 929          * Make sure wait for the first client does not remain active after the
 930          * group has been removed.
 931          */
 932         wpa_s->global->p2p_go_wait_client.sec = 0;
 933
 934         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 935                 struct wpa_global *global;
 936                 char *ifname;
 937                 enum wpa_driver_if_type type;
 938                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 939                         wpa_s->ifname);
 940                 global = wpa_s->global;
 941                 ifname = os_strdup(wpa_s->ifname);
 942                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 943                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 944                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 945                 wpa_s = global->ifaces;
 946                 if (wpa_s && ifname)
 947                         wpa_drv_if_remove(wpa_s, type, ifname);
 948                 os_free(ifname);
 949                 return 1;
 950         }
 951
 952         if (!wpa_s->p2p_go_group_formation_completed) {
 953                 wpa_s->global->p2p_group_formation = NULL;
 954                 wpa_s->p2p_in_provisioning = 0;
 955         }
 956
 957         wpa_s->show_group_started = 0;
 958         os_free(wpa_s->go_params);
 959         wpa_s->go_params = NULL;
 960
 961         os_free(wpa_s->p2p_group_common_freqs);
 962         wpa_s->p2p_group_common_freqs = NULL;
 963         wpa_s->p2p_group_common_freqs_num = 0;
 964
 965         wpa_s->waiting_presence_resp = 0;
 966
 967         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 968         if (ssid && (ssid->p2p_group ||
 969                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 970                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 971                 int id = ssid->id;
 972                 if (ssid == wpa_s->current_ssid) {
 973                         wpa_sm_set_config(wpa_s->wpa, NULL);
 974                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 975                         wpa_s->current_ssid = NULL;
 976                 }
 977                 /*
 978                  * Networks objects created during any P2P activities are not
 979                  * exposed out as they might/will confuse certain non-P2P aware
 980                  * applications since these network objects won't behave like
 981                  * regular ones.
 982                  *
 983                  * Likewise, we don't send out network removed signals for such
 984                  * network objects.
 985                  */
 986                 wpa_config_remove_network(wpa_s->conf, id);
 987                 wpa_supplicant_clear_status(wpa_s);
 988                 wpa_supplicant_cancel_sched_scan(wpa_s);
 989         } else {
 990                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 991                            "found");
 992         }
 993         if (wpa_s->ap_iface)
 994                 wpa_supplicant_ap_deinit(wpa_s);
 995         else
 996                 wpa_drv_deinit_p2p_cli(wpa_s);
 997
 998         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 999
1000         return 0;
1001 }
1002
1003
1004 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
1005                                      u8 *go_dev_addr,
1006                                      const u8 *ssid, size_t ssid_len)
1007 {
1008         struct wpa_bss *bss;
1009         const u8 *bssid;
1010         struct wpabuf *p2p;
1011         u8 group_capab;
1012         const u8 *addr;
1013
1014         if (wpa_s->go_params)
1015                 bssid = wpa_s->go_params->peer_interface_addr;
1016         else
1017                 bssid = wpa_s->bssid;
1018
1019         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
1020         if (bss == NULL && wpa_s->go_params &&
1021             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
1022                 bss = wpa_bss_get_p2p_dev_addr(
1023                         wpa_s, wpa_s->go_params->peer_device_addr);
1024         if (bss == NULL) {
1025                 u8 iface_addr[ETH_ALEN];
1026                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1027                                            iface_addr) == 0)
1028                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1029         }
1030         if (bss == NULL) {
1031                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1032                            "group is persistent - BSS " MACSTR " not found",
1033                            MAC2STR(bssid));
1034                 return 0;
1035         }
1036
1037         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1038         if (p2p == NULL)
1039                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1040                                                          P2P_IE_VENDOR_TYPE);
1041         if (p2p == NULL) {
1042                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1043                            "group is persistent - BSS " MACSTR
1044                            " did not include P2P IE", MAC2STR(bssid));
1045                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1046                             (u8 *) (bss + 1), bss->ie_len);
1047                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1048                             ((u8 *) bss + 1) + bss->ie_len,
1049                             bss->beacon_ie_len);
1050                 return 0;
1051         }
1052
1053         group_capab = p2p_get_group_capab(p2p);
1054         addr = p2p_get_go_dev_addr(p2p);
1055         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1056                    "group_capab=0x%x", group_capab);
1057         if (addr) {
1058                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1059                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1060                            MAC2STR(addr));
1061         } else
1062                 os_memset(go_dev_addr, 0, ETH_ALEN);
1063         wpabuf_free(p2p);
1064
1065         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1066                    "go_dev_addr=" MACSTR,
1067                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1068
1069         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1070 }
1071
1072
1073 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1074                                            struct wpa_ssid *ssid,
1075                                            const u8 *go_dev_addr)
1076 {
1077         struct wpa_ssid *s;
1078         int changed = 0;
1079
1080         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1081                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1082         for (s = wpa_s->conf->ssid; s; s = s->next) {
1083                 if (s->disabled == 2 &&
1084                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1085                     s->ssid_len == ssid->ssid_len &&
1086                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1087                         break;
1088         }
1089
1090         if (s) {
1091                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1092                            "entry");
1093                 if (ssid->passphrase && !s->passphrase)
1094                         changed = 1;
1095                 else if (ssid->passphrase && s->passphrase &&
1096                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1097                         changed = 1;
1098         } else {
1099                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1100                            "entry");
1101                 changed = 1;
1102                 s = wpa_config_add_network(wpa_s->conf);
1103                 if (s == NULL)
1104                         return -1;
1105
1106                 /*
1107                  * Instead of network_added we emit persistent_group_added
1108                  * notification. Also to keep the defense checks in
1109                  * persistent_group obj registration method, we set the
1110                  * relevant flags in s to designate it as a persistent group.
1111                  */
1112                 s->p2p_group = 1;
1113                 s->p2p_persistent_group = 1;
1114                 wpas_notify_persistent_group_added(wpa_s, s);
1115                 wpa_config_set_network_defaults(s);
1116         }
1117
1118         s->p2p_group = 1;
1119         s->p2p_persistent_group = 1;
1120         s->disabled = 2;
1121         s->bssid_set = 1;
1122         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1123         s->mode = ssid->mode;
1124         s->auth_alg = WPA_AUTH_ALG_OPEN;
1125         s->key_mgmt = WPA_KEY_MGMT_PSK;
1126         s->proto = WPA_PROTO_RSN;
1127         s->pairwise_cipher = WPA_CIPHER_CCMP;
1128         s->export_keys = 1;
1129         if (ssid->passphrase) {
1130                 os_free(s->passphrase);
1131                 s->passphrase = os_strdup(ssid->passphrase);
1132         }
1133         if (ssid->psk_set) {
1134                 s->psk_set = 1;
1135                 os_memcpy(s->psk, ssid->psk, 32);
1136         }
1137         if (s->passphrase && !s->psk_set)
1138                 wpa_config_update_psk(s);
1139         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1140                 os_free(s->ssid);
1141                 s->ssid = os_malloc(ssid->ssid_len);
1142         }
1143         if (s->ssid) {
1144                 s->ssid_len = ssid->ssid_len;
1145                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1146         }
1147         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1148                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1149                 wpa_s->global->add_psk = NULL;
1150                 changed = 1;
1151         }
1152
1153         if (changed && wpa_s->conf->update_config &&
1154             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1155                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1156         }
1157
1158         return s->id;
1159 }
1160
1161
1162 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1163                                                  const u8 *addr)
1164 {
1165         struct wpa_ssid *ssid, *s;
1166         u8 *n;
1167         size_t i;
1168         int found = 0;
1169         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1170
1171         ssid = wpa_s->current_ssid;
1172         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1173             !ssid->p2p_persistent_group)
1174                 return;
1175
1176         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1177                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1178                         continue;
1179
1180                 if (s->ssid_len == ssid->ssid_len &&
1181                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1182                         break;
1183         }
1184
1185         if (s == NULL)
1186                 return;
1187
1188         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1189                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1190                               ETH_ALEN) != 0)
1191                         continue;
1192
1193                 if (i == s->num_p2p_clients - 1)
1194                         return; /* already the most recent entry */
1195
1196                 /* move the entry to mark it most recent */
1197                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1198                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1199                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1200                 os_memcpy(s->p2p_client_list +
1201                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1202                           ETH_ALEN);
1203                 os_memset(s->p2p_client_list +
1204                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1205                           0xff, ETH_ALEN);
1206                 found = 1;
1207                 break;
1208         }
1209
1210         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1211                 n = os_realloc_array(s->p2p_client_list,
1212                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1213                 if (n == NULL)
1214                         return;
1215                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1216                           ETH_ALEN);
1217                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1218                           0xff, ETH_ALEN);
1219                 s->p2p_client_list = n;
1220                 s->num_p2p_clients++;
1221         } else if (!found && s->p2p_client_list) {
1222                 /* Not enough room for an additional entry - drop the oldest
1223                  * entry */
1224                 os_memmove(s->p2p_client_list,
1225                            s->p2p_client_list + 2 * ETH_ALEN,
1226                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1227                 os_memcpy(s->p2p_client_list +
1228                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1229                           addr, ETH_ALEN);
1230                 os_memset(s->p2p_client_list +
1231                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1232                           0xff, ETH_ALEN);
1233         }
1234
1235         if (p2p_wpa_s->conf->update_config &&
1236             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1237                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1238 }
1239
1240
1241 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1242                                    int go, struct wpa_ssid *ssid, int freq,
1243                                    const u8 *psk, const char *passphrase,
1244                                    const u8 *go_dev_addr, int persistent,
1245                                    const char *extra)
1246 {
1247         const char *ssid_txt;
1248         char psk_txt[65];
1249
1250         if (psk)
1251                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1252         else
1253                 psk_txt[0] = '\0';
1254
1255         if (ssid)
1256                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1257         else
1258                 ssid_txt = "";
1259
1260         if (passphrase && passphrase[0] == '\0')
1261                 passphrase = NULL;
1262
1263         /*
1264          * Include PSK/passphrase only in the control interface message and
1265          * leave it out from the debug log entry.
1266          */
1267         wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
1268                             P2P_EVENT_GROUP_STARTED
1269                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1270                             MACSTR "%s%s",
1271                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1272                             psk ? " psk=" : "", psk_txt,
1273                             passphrase ? " passphrase=\"" : "",
1274                             passphrase ? passphrase : "",
1275                             passphrase ? "\"" : "",
1276                             MAC2STR(go_dev_addr),
1277                             persistent ? " [PERSISTENT]" : "", extra);
1278         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1279                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1280                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1281                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1282                    extra);
1283 }
1284
1285
1286 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1287                                            int success, int already_deleted)
1288 {
1289         struct wpa_ssid *ssid;
1290         int client;
1291         int persistent;
1292         u8 go_dev_addr[ETH_ALEN];
1293         int network_id = -1;
1294
1295         /*
1296          * This callback is likely called for the main interface. Update wpa_s
1297          * to use the group interface if a new interface was created for the
1298          * group.
1299          */
1300         if (wpa_s->global->p2p_group_formation)
1301                 wpa_s = wpa_s->global->p2p_group_formation;
1302         if (wpa_s->p2p_go_group_formation_completed) {
1303                 wpa_s->global->p2p_group_formation = NULL;
1304                 wpa_s->p2p_in_provisioning = 0;
1305         }
1306         wpa_s->p2p_in_invitation = 0;
1307         wpa_s->group_formation_reported = 1;
1308
1309         if (!success) {
1310                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1311                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1312                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1313                 if (already_deleted)
1314                         return;
1315                 wpas_p2p_group_delete(wpa_s,
1316                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1317                 return;
1318         }
1319
1320         wpa_msg_global(wpa_s->parent, MSG_INFO,
1321                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1322
1323         ssid = wpa_s->current_ssid;
1324         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1325                 ssid->mode = WPAS_MODE_P2P_GO;
1326                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1327                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1328         }
1329
1330         persistent = 0;
1331         if (ssid) {
1332                 client = ssid->mode == WPAS_MODE_INFRA;
1333                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1334                         persistent = ssid->p2p_persistent_group;
1335                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1336                                   ETH_ALEN);
1337                 } else
1338                         persistent = wpas_p2p_persistent_group(wpa_s,
1339                                                                go_dev_addr,
1340                                                                ssid->ssid,
1341                                                                ssid->ssid_len);
1342         } else {
1343                 client = wpa_s->p2p_group_interface ==
1344                         P2P_GROUP_INTERFACE_CLIENT;
1345                 os_memset(go_dev_addr, 0, ETH_ALEN);
1346         }
1347
1348         wpa_s->show_group_started = 0;
1349         if (client) {
1350                 /*
1351                  * Indicate event only after successfully completed 4-way
1352                  * handshake, i.e., when the interface is ready for data
1353                  * packets.
1354                  */
1355                 wpa_s->show_group_started = 1;
1356         } else {
1357                 wpas_p2p_group_started(wpa_s, 1, ssid,
1358                                        ssid ? ssid->frequency : 0,
1359                                        ssid && ssid->passphrase == NULL &&
1360                                        ssid->psk_set ? ssid->psk : NULL,
1361                                        ssid ? ssid->passphrase : NULL,
1362                                        go_dev_addr, persistent, "");
1363                 wpas_p2p_cross_connect_setup(wpa_s);
1364                 wpas_p2p_set_group_idle_timeout(wpa_s);
1365         }
1366
1367         if (persistent)
1368                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
1369                                                              ssid, go_dev_addr);
1370         else {
1371                 os_free(wpa_s->global->add_psk);
1372                 wpa_s->global->add_psk = NULL;
1373         }
1374         if (network_id < 0 && ssid)
1375                 network_id = ssid->id;
1376         if (!client) {
1377                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1378                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1379         }
1380 }
1381
1382
1383 struct send_action_work {
1384         unsigned int freq;
1385         u8 dst[ETH_ALEN];
1386         u8 src[ETH_ALEN];
1387         u8 bssid[ETH_ALEN];
1388         size_t len;
1389         unsigned int wait_time;
1390         u8 buf[0];
1391 };
1392
1393
1394 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s)
1395 {
1396         struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx;
1397
1398         wpa_printf(MSG_DEBUG,
1399                    "P2P: Free Action frame radio work @%p (freq=%u dst="
1400                    MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)",
1401                    wpa_s->p2p_send_action_work, awork->freq,
1402                    MAC2STR(awork->dst), MAC2STR(awork->src),
1403                    MAC2STR(awork->bssid), awork->wait_time);
1404         wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame",
1405                     awork->buf, awork->len);
1406         os_free(awork);
1407         wpa_s->p2p_send_action_work->ctx = NULL;
1408         radio_work_done(wpa_s->p2p_send_action_work);
1409         wpa_s->p2p_send_action_work = NULL;
1410 }
1411
1412
1413 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1414                                               void *timeout_ctx)
1415 {
1416         struct wpa_supplicant *wpa_s = eloop_ctx;
1417
1418         if (!wpa_s->p2p_send_action_work)
1419                 return;
1420
1421         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1422         wpas_p2p_free_send_action_work(wpa_s);
1423 }
1424
1425
1426 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1427 {
1428         if (wpa_s->p2p_send_action_work) {
1429                 struct send_action_work *awork;
1430
1431                 awork = wpa_s->p2p_send_action_work->ctx;
1432                 wpa_printf(MSG_DEBUG,
1433                            "P2P: Clear Action TX work @%p (wait_time=%u)",
1434                            wpa_s->p2p_send_action_work, awork->wait_time);
1435                 if (awork->wait_time == 0) {
1436                         wpas_p2p_free_send_action_work(wpa_s);
1437                 } else {
1438                         /*
1439                          * In theory, this should not be needed, but number of
1440                          * places in the P2P code is still using non-zero wait
1441                          * time for the last Action frame in the sequence and
1442                          * some of these do not call send_action_done().
1443                          */
1444                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1445                                              wpa_s, NULL);
1446                         eloop_register_timeout(
1447                                 0, awork->wait_time * 1000,
1448                                 wpas_p2p_send_action_work_timeout,
1449                                 wpa_s, NULL);
1450                 }
1451         }
1452 }
1453
1454
1455 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1456                                            unsigned int freq,
1457                                            const u8 *dst, const u8 *src,
1458                                            const u8 *bssid,
1459                                            const u8 *data, size_t data_len,
1460                                            enum offchannel_send_action_result
1461                                            result)
1462 {
1463         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1464
1465         wpas_p2p_action_tx_clear(wpa_s);
1466
1467         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1468                 return;
1469
1470         switch (result) {
1471         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1472                 res = P2P_SEND_ACTION_SUCCESS;
1473                 break;
1474         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1475                 res = P2P_SEND_ACTION_NO_ACK;
1476                 break;
1477         case OFFCHANNEL_SEND_ACTION_FAILED:
1478                 res = P2P_SEND_ACTION_FAILED;
1479                 break;
1480         }
1481
1482         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1483
1484         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1485             wpa_s->pending_pd_before_join &&
1486             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1487              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1488             wpa_s->p2p_fallback_to_go_neg) {
1489                 wpa_s->pending_pd_before_join = 0;
1490                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1491                         "during p2p_connect-auto");
1492                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1493                                P2P_EVENT_FALLBACK_TO_GO_NEG
1494                                "reason=no-ACK-to-PD-Req");
1495                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1496                 return;
1497         }
1498 }
1499
1500
1501 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1502 {
1503         struct wpa_supplicant *wpa_s = work->wpa_s;
1504         struct send_action_work *awork = work->ctx;
1505
1506         if (deinit) {
1507                 if (work->started) {
1508                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1509                                              wpa_s, NULL);
1510                         wpa_s->p2p_send_action_work = NULL;
1511                         offchannel_send_action_done(wpa_s);
1512                 }
1513                 os_free(awork);
1514                 return;
1515         }
1516
1517         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1518                                    awork->bssid, awork->buf, awork->len,
1519                                    awork->wait_time,
1520                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1521                 os_free(awork);
1522                 radio_work_done(work);
1523                 return;
1524         }
1525         wpa_s->p2p_send_action_work = work;
1526 }
1527
1528
1529 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1530                                  unsigned int freq, const u8 *dst,
1531                                  const u8 *src, const u8 *bssid, const u8 *buf,
1532                                  size_t len, unsigned int wait_time)
1533 {
1534         struct send_action_work *awork;
1535
1536         if (wpa_s->p2p_send_action_work) {
1537                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1538                 return -1;
1539         }
1540
1541         awork = os_zalloc(sizeof(*awork) + len);
1542         if (awork == NULL)
1543                 return -1;
1544
1545         awork->freq = freq;
1546         os_memcpy(awork->dst, dst, ETH_ALEN);
1547         os_memcpy(awork->src, src, ETH_ALEN);
1548         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1549         awork->len = len;
1550         awork->wait_time = wait_time;
1551         os_memcpy(awork->buf, buf, len);
1552
1553         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1554                            wpas_send_action_cb, awork) < 0) {
1555                 os_free(awork);
1556                 return -1;
1557         }
1558
1559         return 0;
1560 }
1561
1562
1563 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1564                             const u8 *src, const u8 *bssid, const u8 *buf,
1565                             size_t len, unsigned int wait_time)
1566 {
1567         struct wpa_supplicant *wpa_s = ctx;
1568         int listen_freq = -1, send_freq = -1;
1569
1570         if (wpa_s->p2p_listen_work)
1571                 listen_freq = wpa_s->p2p_listen_work->freq;
1572         if (wpa_s->p2p_send_action_work)
1573                 send_freq = wpa_s->p2p_send_action_work->freq;
1574         if (listen_freq != (int) freq && send_freq != (int) freq) {
1575                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1576                            listen_freq, send_freq);
1577                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1578                                              len, wait_time);
1579         }
1580
1581         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1582         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1583                                       wait_time,
1584                                       wpas_p2p_send_action_tx_status, 1);
1585 }
1586
1587
1588 static void wpas_send_action_done(void *ctx)
1589 {
1590         struct wpa_supplicant *wpa_s = ctx;
1591
1592         if (wpa_s->p2p_send_action_work) {
1593                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1594                                      wpa_s, NULL);
1595                 os_free(wpa_s->p2p_send_action_work->ctx);
1596                 radio_work_done(wpa_s->p2p_send_action_work);
1597                 wpa_s->p2p_send_action_work = NULL;
1598         }
1599
1600         offchannel_send_action_done(wpa_s);
1601 }
1602
1603
1604 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1605                                     struct p2p_go_neg_results *params)
1606 {
1607         if (wpa_s->go_params == NULL) {
1608                 wpa_s->go_params = os_malloc(sizeof(*params));
1609                 if (wpa_s->go_params == NULL)
1610                         return -1;
1611         }
1612         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1613         return 0;
1614 }
1615
1616
1617 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1618                                     struct p2p_go_neg_results *res)
1619 {
1620         wpa_s->group_formation_reported = 0;
1621         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1622                    " dev_addr " MACSTR " wps_method %d",
1623                    MAC2STR(res->peer_interface_addr),
1624                    MAC2STR(res->peer_device_addr), res->wps_method);
1625         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1626                           res->ssid, res->ssid_len);
1627         wpa_supplicant_ap_deinit(wpa_s);
1628         wpas_copy_go_neg_results(wpa_s, res);
1629         if (res->wps_method == WPS_PBC) {
1630                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1631 #ifdef CONFIG_WPS_NFC
1632         } else if (res->wps_method == WPS_NFC) {
1633                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1634                                    res->peer_interface_addr,
1635                                    wpa_s->parent->p2p_oob_dev_pw,
1636                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1637                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1638                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1639                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1640                                    NULL,
1641                                    NULL, 0, 0);
1642 #endif /* CONFIG_WPS_NFC */
1643         } else {
1644                 u16 dev_pw_id = DEV_PW_DEFAULT;
1645                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1646                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1647                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1648                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1649                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1650                                    wpa_s->p2p_pin, 1, dev_pw_id);
1651         }
1652 }
1653
1654
1655 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1656                                   struct wpa_ssid *ssid)
1657 {
1658         struct wpa_ssid *persistent;
1659         struct psk_list_entry *psk;
1660         struct hostapd_data *hapd;
1661
1662         if (!wpa_s->ap_iface)
1663                 return;
1664
1665         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1666                                              ssid->ssid_len);
1667         if (persistent == NULL)
1668                 return;
1669
1670         hapd = wpa_s->ap_iface->bss[0];
1671
1672         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1673                          list) {
1674                 struct hostapd_wpa_psk *hpsk;
1675
1676                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1677                         MACSTR " psk=%d",
1678                         MAC2STR(psk->addr), psk->p2p);
1679                 hpsk = os_zalloc(sizeof(*hpsk));
1680                 if (hpsk == NULL)
1681                         break;
1682                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1683                 if (psk->p2p)
1684                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1685                 else
1686                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1687                 hpsk->next = hapd->conf->ssid.wpa_psk;
1688                 hapd->conf->ssid.wpa_psk = hpsk;
1689         }
1690 }
1691
1692
1693 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1694 {
1695         unsigned int i;
1696
1697         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1698                 wpa_s->p2p_group_common_freqs_num);
1699
1700         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1701                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1702                         i, wpa_s->p2p_group_common_freqs[i]);
1703 }
1704
1705
1706 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1707                                            struct p2p_go_neg_results *params)
1708 {
1709         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1710
1711         wpa_s->p2p_group_common_freqs_num = 0;
1712         os_free(wpa_s->p2p_group_common_freqs);
1713         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1714         if (!wpa_s->p2p_group_common_freqs)
1715                 return;
1716
1717         for (i = 0; i < len; i++) {
1718                 if (!wpa_s->go_params->freq_list[i])
1719                         break;
1720                 wpa_s->p2p_group_common_freqs[i] =
1721                         wpa_s->go_params->freq_list[i];
1722         }
1723         wpa_s->p2p_group_common_freqs_num = i;
1724 }
1725
1726
1727 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1728 {
1729 #ifndef CONFIG_NO_CONFIG_WRITE
1730         if (wpa_s->parent->conf->update_config &&
1731             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1732                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1733 #endif /* CONFIG_NO_CONFIG_WRITE */
1734 }
1735
1736
1737 static void p2p_go_configured(void *ctx, void *data)
1738 {
1739         struct wpa_supplicant *wpa_s = ctx;
1740         struct p2p_go_neg_results *params = data;
1741         struct wpa_ssid *ssid;
1742         int network_id = -1;
1743
1744         wpa_s->ap_configured_cb = NULL;
1745         wpa_s->ap_configured_cb_ctx = NULL;
1746         wpa_s->ap_configured_cb_data = NULL;
1747         if (!wpa_s->go_params) {
1748                 wpa_printf(MSG_ERROR,
1749                            "P2P: p2p_go_configured() called with wpa_s->go_params == NULL");
1750                 return;
1751         }
1752
1753         p2p_go_save_group_common_freqs(wpa_s, params);
1754         p2p_go_dump_common_freqs(wpa_s);
1755
1756         ssid = wpa_s->current_ssid;
1757         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1758                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1759                 if (wpa_s->global->p2p_group_formation == wpa_s)
1760                         wpa_s->global->p2p_group_formation = NULL;
1761                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1762                                        params->passphrase[0] == '\0' ?
1763                                        params->psk : NULL,
1764                                        params->passphrase,
1765                                        wpa_s->global->p2p_dev_addr,
1766                                        params->persistent_group, "");
1767                 wpa_s->group_formation_reported = 1;
1768
1769                 if (wpa_s->parent->p2ps_method_config_any) {
1770                         if (is_zero_ether_addr(wpa_s->parent->p2ps_join_addr)) {
1771                                 wpa_dbg(wpa_s, MSG_DEBUG,
1772                                         "P2PS: Setting default PIN for ANY");
1773                                 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1774                                                           "12345670", NULL, 0,
1775                                                           0);
1776                         } else {
1777                                 wpa_dbg(wpa_s, MSG_DEBUG,
1778                                         "P2PS: Setting default PIN for " MACSTR,
1779                                         MAC2STR(wpa_s->parent->p2ps_join_addr));
1780                                 wpa_supplicant_ap_wps_pin(
1781                                         wpa_s, wpa_s->parent->p2ps_join_addr,
1782                                         "12345670", NULL, 0, 0);
1783                         }
1784                         wpa_s->parent->p2ps_method_config_any = 0;
1785                 }
1786
1787                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1788                 if (params->persistent_group) {
1789                         network_id = wpas_p2p_store_persistent_group(
1790                                 wpa_s->parent, ssid,
1791                                 wpa_s->global->p2p_dev_addr);
1792                         wpas_p2p_add_psk_list(wpa_s, ssid);
1793                 }
1794                 if (network_id < 0)
1795                         network_id = ssid->id;
1796                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1797                 wpas_p2p_cross_connect_setup(wpa_s);
1798                 wpas_p2p_set_group_idle_timeout(wpa_s);
1799
1800                 if (wpa_s->p2p_first_connection_timeout) {
1801                         wpa_dbg(wpa_s, MSG_DEBUG,
1802                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1803                                 wpa_s->p2p_first_connection_timeout);
1804                         wpa_s->p2p_go_group_formation_completed = 0;
1805                         wpa_s->global->p2p_group_formation = wpa_s;
1806                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1807                                              wpa_s->parent, NULL);
1808                         eloop_register_timeout(
1809                                 wpa_s->p2p_first_connection_timeout, 0,
1810                                 wpas_p2p_group_formation_timeout,
1811                                 wpa_s->parent, NULL);
1812                 }
1813
1814                 return;
1815         }
1816
1817         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1818         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1819                                               params->peer_interface_addr)) {
1820                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1821                            "filtering");
1822                 return;
1823         }
1824         if (params->wps_method == WPS_PBC) {
1825                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1826                                           params->peer_device_addr);
1827 #ifdef CONFIG_WPS_NFC
1828         } else if (params->wps_method == WPS_NFC) {
1829                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1830                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1831                     !wpa_s->parent->p2p_oob_dev_pw) {
1832                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1833                         return;
1834                 }
1835                 wpas_ap_wps_add_nfc_pw(
1836                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1837                         wpa_s->parent->p2p_oob_dev_pw,
1838                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1839                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1840 #endif /* CONFIG_WPS_NFC */
1841         } else if (wpa_s->p2p_pin[0])
1842                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1843                                           wpa_s->p2p_pin, NULL, 0, 0);
1844         os_free(wpa_s->go_params);
1845         wpa_s->go_params = NULL;
1846 }
1847
1848
1849 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1850                               struct p2p_go_neg_results *params,
1851                               int group_formation)
1852 {
1853         struct wpa_ssid *ssid;
1854
1855         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1856         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1857                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1858                         "results");
1859                 return;
1860         }
1861
1862         ssid = wpa_config_add_network(wpa_s->conf);
1863         if (ssid == NULL) {
1864                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1865                 return;
1866         }
1867
1868         wpa_s->show_group_started = 0;
1869         wpa_s->p2p_go_group_formation_completed = 0;
1870         wpa_s->group_formation_reported = 0;
1871         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1872
1873         wpa_config_set_network_defaults(ssid);
1874         ssid->temporary = 1;
1875         ssid->p2p_group = 1;
1876         ssid->p2p_persistent_group = params->persistent_group;
1877         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1878                 WPAS_MODE_P2P_GO;
1879         ssid->frequency = params->freq;
1880         ssid->ht40 = params->ht40;
1881         ssid->vht = params->vht;
1882         ssid->max_oper_chwidth = params->max_oper_chwidth;
1883         ssid->vht_center_freq2 = params->vht_center_freq2;
1884         ssid->ssid = os_zalloc(params->ssid_len + 1);
1885         if (ssid->ssid) {
1886                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1887                 ssid->ssid_len = params->ssid_len;
1888         }
1889         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1890         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1891         ssid->proto = WPA_PROTO_RSN;
1892         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1893         ssid->group_cipher = WPA_CIPHER_CCMP;
1894         if (params->freq > 56160) {
1895                 /*
1896                  * Enable GCMP instead of CCMP as pairwise_cipher and
1897                  * group_cipher in 60 GHz.
1898                  */
1899                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1900                 ssid->group_cipher = WPA_CIPHER_GCMP;
1901                 /* P2P GO in 60 GHz is always a PCP (PBSS) */
1902                 ssid->pbss = 1;
1903         }
1904         if (os_strlen(params->passphrase) > 0) {
1905                 ssid->passphrase = os_strdup(params->passphrase);
1906                 if (ssid->passphrase == NULL) {
1907                         wpa_msg_global(wpa_s, MSG_ERROR,
1908                                        "P2P: Failed to copy passphrase for GO");
1909                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1910                         return;
1911                 }
1912         } else
1913                 ssid->passphrase = NULL;
1914         ssid->psk_set = params->psk_set;
1915         if (ssid->psk_set)
1916                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1917         else if (ssid->passphrase)
1918                 wpa_config_update_psk(ssid);
1919         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1920
1921         wpa_s->ap_configured_cb = p2p_go_configured;
1922         wpa_s->ap_configured_cb_ctx = wpa_s;
1923         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1924         wpa_s->scan_req = NORMAL_SCAN_REQ;
1925         wpa_s->connect_without_scan = ssid;
1926         wpa_s->reassociate = 1;
1927         wpa_s->disconnected = 0;
1928         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1929                 "start GO)");
1930         wpa_supplicant_req_scan(wpa_s, 0, 0);
1931 }
1932
1933
1934 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1935                                   const struct wpa_supplicant *src)
1936 {
1937         struct wpa_config *d;
1938         const struct wpa_config *s;
1939
1940         d = dst->conf;
1941         s = src->conf;
1942
1943 #define C(n) if (s->n) d->n = os_strdup(s->n)
1944         C(device_name);
1945         C(manufacturer);
1946         C(model_name);
1947         C(model_number);
1948         C(serial_number);
1949         C(config_methods);
1950 #undef C
1951
1952         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1953         os_memcpy(d->sec_device_type, s->sec_device_type,
1954                   sizeof(d->sec_device_type));
1955         d->num_sec_device_types = s->num_sec_device_types;
1956
1957         d->p2p_group_idle = s->p2p_group_idle;
1958         d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
1959         d->p2p_intra_bss = s->p2p_intra_bss;
1960         d->persistent_reconnect = s->persistent_reconnect;
1961         d->max_num_sta = s->max_num_sta;
1962         d->pbc_in_m1 = s->pbc_in_m1;
1963         d->ignore_old_scan_res = s->ignore_old_scan_res;
1964         d->beacon_int = s->beacon_int;
1965         d->dtim_period = s->dtim_period;
1966         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1967         d->disassoc_low_ack = s->disassoc_low_ack;
1968         d->disable_scan_offload = s->disable_scan_offload;
1969         d->passive_scan = s->passive_scan;
1970
1971         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1972                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1973                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1974         }
1975         d->p2p_cli_probe = s->p2p_cli_probe;
1976 }
1977
1978
1979 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1980                                       char *ifname, size_t len)
1981 {
1982         char *ifname_ptr = wpa_s->ifname;
1983
1984         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1985                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1986                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1987         }
1988
1989         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1990         if (os_strlen(ifname) >= IFNAMSIZ &&
1991             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1992                 int res;
1993
1994                 /* Try to avoid going over the IFNAMSIZ length limit */
1995                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1996                 if (os_snprintf_error(len, res) && len)
1997                         ifname[len - 1] = '\0';
1998         }
1999 }
2000
2001
2002 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
2003                                         enum wpa_driver_if_type type)
2004 {
2005         char ifname[120], force_ifname[120];
2006
2007         if (wpa_s->pending_interface_name[0]) {
2008                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
2009                            "- skip creation of a new one");
2010                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
2011                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
2012                                    "unknown?! ifname='%s'",
2013                                    wpa_s->pending_interface_name);
2014                         return -1;
2015                 }
2016                 return 0;
2017         }
2018
2019         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
2020         force_ifname[0] = '\0';
2021
2022         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
2023                    ifname);
2024         wpa_s->p2p_group_idx++;
2025
2026         wpa_s->pending_interface_type = type;
2027         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
2028                            wpa_s->pending_interface_addr, NULL) < 0) {
2029                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
2030                            "interface");
2031                 return -1;
2032         }
2033
2034         if (force_ifname[0]) {
2035                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2036                            force_ifname);
2037                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2038                            sizeof(wpa_s->pending_interface_name));
2039         } else
2040                 os_strlcpy(wpa_s->pending_interface_name, ifname,
2041                            sizeof(wpa_s->pending_interface_name));
2042         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2043                    MACSTR, wpa_s->pending_interface_name,
2044                    MAC2STR(wpa_s->pending_interface_addr));
2045
2046         return 0;
2047 }
2048
2049
2050 static void wpas_p2p_remove_pending_group_interface(
2051         struct wpa_supplicant *wpa_s)
2052 {
2053         if (!wpa_s->pending_interface_name[0] ||
2054             is_zero_ether_addr(wpa_s->pending_interface_addr))
2055                 return; /* No pending virtual interface */
2056
2057         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2058                    wpa_s->pending_interface_name);
2059         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2060                           wpa_s->pending_interface_name);
2061         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2062         wpa_s->pending_interface_name[0] = '\0';
2063         wpa_s->global->pending_group_iface_for_p2ps = 0;
2064 }
2065
2066
2067 static struct wpa_supplicant *
2068 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2069 {
2070         struct wpa_interface iface;
2071         struct wpa_supplicant *group_wpa_s;
2072
2073         if (!wpa_s->pending_interface_name[0]) {
2074                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2075                 if (!wpas_p2p_create_iface(wpa_s))
2076                         return NULL;
2077                 /*
2078                  * Something has forced us to remove the pending interface; try
2079                  * to create a new one and hope for the best that we will get
2080                  * the same local address.
2081                  */
2082                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2083                                                  WPA_IF_P2P_CLIENT) < 0)
2084                         return NULL;
2085         }
2086
2087         os_memset(&iface, 0, sizeof(iface));
2088         iface.ifname = wpa_s->pending_interface_name;
2089         iface.driver = wpa_s->driver->name;
2090         if (wpa_s->conf->ctrl_interface == NULL &&
2091             wpa_s->parent != wpa_s &&
2092             wpa_s->p2p_mgmt &&
2093             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2094                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2095         else
2096                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2097         iface.driver_param = wpa_s->conf->driver_param;
2098         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2099         if (group_wpa_s == NULL) {
2100                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2101                            "wpa_supplicant interface");
2102                 return NULL;
2103         }
2104         wpa_s->pending_interface_name[0] = '\0';
2105         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2106                 P2P_GROUP_INTERFACE_CLIENT;
2107         wpa_s->global->p2p_group_formation = group_wpa_s;
2108         wpa_s->global->pending_group_iface_for_p2ps = 0;
2109
2110         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2111
2112         return group_wpa_s;
2113 }
2114
2115
2116 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2117                                              void *timeout_ctx)
2118 {
2119         struct wpa_supplicant *wpa_s = eloop_ctx;
2120         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2121         wpas_p2p_group_formation_failed(wpa_s, 0);
2122 }
2123
2124
2125 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2126                                             int already_deleted)
2127 {
2128         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2129                              wpa_s->parent, NULL);
2130         if (wpa_s->global->p2p)
2131                 p2p_group_formation_failed(wpa_s->global->p2p);
2132         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2133 }
2134
2135
2136 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2137 {
2138         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2139         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2140                              wpa_s->parent, NULL);
2141         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2142                                wpa_s->parent, NULL);
2143         wpa_s->global->p2p_fail_on_wps_complete = 0;
2144 }
2145
2146
2147 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2148 {
2149         if (wpa_s->global->p2p_group_formation != wpa_s)
2150                 return;
2151         /* Speed up group formation timeout since this cannot succeed */
2152         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2153                              wpa_s->parent, NULL);
2154         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2155                                wpa_s->parent, NULL);
2156 }
2157
2158
2159 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2160 {
2161         struct wpa_supplicant *wpa_s = ctx;
2162
2163         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2164                 wpa_drv_cancel_remain_on_channel(wpa_s);
2165                 wpa_s->off_channel_freq = 0;
2166                 wpa_s->roc_waiting_drv_freq = 0;
2167         }
2168
2169         if (res->status) {
2170                 wpa_msg_global(wpa_s, MSG_INFO,
2171                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2172                                res->status);
2173                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2174                 wpas_p2p_remove_pending_group_interface(wpa_s);
2175                 return;
2176         }
2177
2178         if (!res->role_go) {
2179                 /* Inform driver of the operating channel of GO. */
2180                 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2181         }
2182
2183         if (wpa_s->p2p_go_ht40)
2184                 res->ht40 = 1;
2185         if (wpa_s->p2p_go_vht)
2186                 res->vht = 1;
2187         res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth;
2188         res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2;
2189
2190         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2191                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2192                        " wps_method=%s",
2193                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2194                        MAC2STR(res->peer_device_addr),
2195                        MAC2STR(res->peer_interface_addr),
2196                        p2p_wps_method_text(res->wps_method));
2197         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2198
2199         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2200                 struct wpa_ssid *ssid;
2201                 ssid = wpa_config_get_network(wpa_s->conf,
2202                                               wpa_s->p2p_persistent_id);
2203                 if (ssid && ssid->disabled == 2 &&
2204                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2205                         size_t len = os_strlen(ssid->passphrase);
2206                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2207                                    "on requested persistent group");
2208                         os_memcpy(res->passphrase, ssid->passphrase, len);
2209                         res->passphrase[len] = '\0';
2210                 }
2211         }
2212
2213         if (wpa_s->create_p2p_iface) {
2214                 struct wpa_supplicant *group_wpa_s =
2215                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2216                 if (group_wpa_s == NULL) {
2217                         wpas_p2p_remove_pending_group_interface(wpa_s);
2218                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2219                                              wpa_s, NULL);
2220                         wpas_p2p_group_formation_failed(wpa_s, 1);
2221                         return;
2222                 }
2223                 if (group_wpa_s != wpa_s) {
2224                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2225                                   sizeof(group_wpa_s->p2p_pin));
2226                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2227                 }
2228                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2229                 wpa_s->pending_interface_name[0] = '\0';
2230                 group_wpa_s->p2p_in_provisioning = 1;
2231
2232                 if (res->role_go) {
2233                         wpas_start_wps_go(group_wpa_s, res, 1);
2234                 } else {
2235                         os_get_reltime(&group_wpa_s->scan_min_time);
2236                         wpas_start_wps_enrollee(group_wpa_s, res);
2237                 }
2238         } else {
2239                 wpa_s->p2p_in_provisioning = 1;
2240                 wpa_s->global->p2p_group_formation = wpa_s;
2241
2242                 if (res->role_go) {
2243                         wpas_start_wps_go(wpa_s, res, 1);
2244                 } else {
2245                         os_get_reltime(&wpa_s->scan_min_time);
2246                         wpas_start_wps_enrollee(ctx, res);
2247                 }
2248         }
2249
2250         wpa_s->p2p_long_listen = 0;
2251         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2252
2253         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2254         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2255                                (res->peer_config_timeout % 100) * 10000,
2256                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2257 }
2258
2259
2260 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2261                                u8 go_intent)
2262 {
2263         struct wpa_supplicant *wpa_s = ctx;
2264         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2265                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2266                        dev_passwd_id, go_intent);
2267
2268         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2269 }
2270
2271
2272 static void wpas_dev_found(void *ctx, const u8 *addr,
2273                            const struct p2p_peer_info *info,
2274                            int new_device)
2275 {
2276 #ifndef CONFIG_NO_STDOUT_DEBUG
2277         struct wpa_supplicant *wpa_s = ctx;
2278         char devtype[WPS_DEV_TYPE_BUFSIZE];
2279         char *wfd_dev_info_hex = NULL;
2280
2281 #ifdef CONFIG_WIFI_DISPLAY
2282         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2283                                                     WFD_SUBELEM_DEVICE_INFO);
2284 #endif /* CONFIG_WIFI_DISPLAY */
2285
2286         if (info->p2ps_instance) {
2287                 char str[256];
2288                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2289                 size_t len = wpabuf_len(info->p2ps_instance);
2290
2291                 while (len) {
2292                         u32 id;
2293                         u16 methods;
2294                         u8 str_len;
2295
2296                         if (len < 4 + 2 + 1)
2297                                 break;
2298                         id = WPA_GET_LE32(buf);
2299                         buf += sizeof(u32);
2300                         methods = WPA_GET_BE16(buf);
2301                         buf += sizeof(u16);
2302                         str_len = *buf++;
2303                         if (str_len > len - 4 - 2 - 1)
2304                                 break;
2305                         os_memcpy(str, buf, str_len);
2306                         str[str_len] = '\0';
2307                         buf += str_len;
2308                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2309
2310                         wpa_msg_global(wpa_s, MSG_INFO,
2311                                        P2P_EVENT_DEVICE_FOUND MACSTR
2312                                        " p2p_dev_addr=" MACSTR
2313                                        " pri_dev_type=%s name='%s'"
2314                                        " config_methods=0x%x"
2315                                        " dev_capab=0x%x"
2316                                        " group_capab=0x%x"
2317                                        " adv_id=%x asp_svc=%s%s",
2318                                        MAC2STR(addr),
2319                                        MAC2STR(info->p2p_device_addr),
2320                                        wps_dev_type_bin2str(
2321                                                info->pri_dev_type,
2322                                                devtype, sizeof(devtype)),
2323                                        info->device_name, methods,
2324                                        info->dev_capab, info->group_capab,
2325                                        id, str,
2326                                        info->vendor_elems ?
2327                                        " vendor_elems=1" : "");
2328                 }
2329                 goto done;
2330         }
2331
2332         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2333                        " p2p_dev_addr=" MACSTR
2334                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2335                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2336                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2337                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2338                                             sizeof(devtype)),
2339                        info->device_name, info->config_methods,
2340                        info->dev_capab, info->group_capab,
2341                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2342                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2343                        info->vendor_elems ? " vendor_elems=1" : "",
2344                        new_device);
2345
2346 done:
2347         os_free(wfd_dev_info_hex);
2348 #endif /* CONFIG_NO_STDOUT_DEBUG */
2349
2350         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2351 }
2352
2353
2354 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2355 {
2356         struct wpa_supplicant *wpa_s = ctx;
2357
2358         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2359                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2360
2361         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2362 }
2363
2364
2365 static void wpas_find_stopped(void *ctx)
2366 {
2367         struct wpa_supplicant *wpa_s = ctx;
2368         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2369         wpas_notify_p2p_find_stopped(wpa_s);
2370 }
2371
2372
2373 struct wpas_p2p_listen_work {
2374         unsigned int freq;
2375         unsigned int duration;
2376         struct wpabuf *probe_resp_ie;
2377 };
2378
2379
2380 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2381 {
2382         if (lwork == NULL)
2383                 return;
2384         wpabuf_free(lwork->probe_resp_ie);
2385         os_free(lwork);
2386 }
2387
2388
2389 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2390 {
2391         struct wpas_p2p_listen_work *lwork;
2392
2393         if (!wpa_s->p2p_listen_work)
2394                 return;
2395
2396         lwork = wpa_s->p2p_listen_work->ctx;
2397         wpas_p2p_listen_work_free(lwork);
2398         radio_work_done(wpa_s->p2p_listen_work);
2399         wpa_s->p2p_listen_work = NULL;
2400 }
2401
2402
2403 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2404 {
2405         struct wpa_supplicant *wpa_s = work->wpa_s;
2406         struct wpas_p2p_listen_work *lwork = work->ctx;
2407         unsigned int duration;
2408
2409         if (deinit) {
2410                 if (work->started) {
2411                         wpa_s->p2p_listen_work = NULL;
2412                         wpas_stop_listen(wpa_s);
2413                 }
2414                 wpas_p2p_listen_work_free(lwork);
2415                 return;
2416         }
2417
2418         wpa_s->p2p_listen_work = work;
2419
2420         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2421
2422         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2423                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2424                            "report received Probe Request frames");
2425                 wpas_p2p_listen_work_done(wpa_s);
2426                 return;
2427         }
2428
2429         wpa_s->pending_listen_freq = lwork->freq;
2430         wpa_s->pending_listen_duration = lwork->duration;
2431
2432         duration = lwork->duration;
2433 #ifdef CONFIG_TESTING_OPTIONS
2434         if (wpa_s->extra_roc_dur) {
2435                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2436                            duration, duration + wpa_s->extra_roc_dur);
2437                 duration += wpa_s->extra_roc_dur;
2438         }
2439 #endif /* CONFIG_TESTING_OPTIONS */
2440
2441         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2442                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2443                            "to remain on channel (%u MHz) for Listen "
2444                            "state", lwork->freq);
2445                 wpas_p2p_listen_work_done(wpa_s);
2446                 wpa_s->pending_listen_freq = 0;
2447                 return;
2448         }
2449         wpa_s->off_channel_freq = 0;
2450         wpa_s->roc_waiting_drv_freq = lwork->freq;
2451 }
2452
2453
2454 static int wpas_start_listen(void *ctx, unsigned int freq,
2455                              unsigned int duration,
2456                              const struct wpabuf *probe_resp_ie)
2457 {
2458         struct wpa_supplicant *wpa_s = ctx;
2459         struct wpas_p2p_listen_work *lwork;
2460
2461         if (wpa_s->p2p_listen_work) {
2462                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2463                 return -1;
2464         }
2465
2466         lwork = os_zalloc(sizeof(*lwork));
2467         if (lwork == NULL)
2468                 return -1;
2469         lwork->freq = freq;
2470         lwork->duration = duration;
2471         if (probe_resp_ie) {
2472                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2473                 if (lwork->probe_resp_ie == NULL) {
2474                         wpas_p2p_listen_work_free(lwork);
2475                         return -1;
2476                 }
2477         }
2478
2479         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2480                            lwork) < 0) {
2481                 wpas_p2p_listen_work_free(lwork);
2482                 return -1;
2483         }
2484
2485         return 0;
2486 }
2487
2488
2489 static void wpas_stop_listen(void *ctx)
2490 {
2491         struct wpa_supplicant *wpa_s = ctx;
2492         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2493                 wpa_drv_cancel_remain_on_channel(wpa_s);
2494                 wpa_s->off_channel_freq = 0;
2495                 wpa_s->roc_waiting_drv_freq = 0;
2496         }
2497         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2498
2499         /*
2500          * Don't cancel Probe Request RX reporting for a connected P2P Client
2501          * handling Probe Request frames.
2502          */
2503         if (!wpa_s->p2p_cli_probe)
2504                 wpa_drv_probe_req_report(wpa_s, 0);
2505
2506         wpas_p2p_listen_work_done(wpa_s);
2507 }
2508
2509
2510 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2511                                 unsigned int freq)
2512 {
2513         struct wpa_supplicant *wpa_s = ctx;
2514         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2515                                  freq);
2516 }
2517
2518
2519 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2520                                          const u8 *peer, const char *params,
2521                                          unsigned int generated_pin)
2522 {
2523         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2524                        " %08d%s", MAC2STR(peer), generated_pin, params);
2525 }
2526
2527
2528 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2529                                         const u8 *peer, const char *params)
2530 {
2531         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2532                        "%s", MAC2STR(peer), params);
2533 }
2534
2535
2536 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2537                                const u8 *dev_addr, const u8 *pri_dev_type,
2538                                const char *dev_name, u16 supp_config_methods,
2539                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2540                                size_t group_id_len)
2541 {
2542         struct wpa_supplicant *wpa_s = ctx;
2543         char devtype[WPS_DEV_TYPE_BUFSIZE];
2544         char params[300];
2545         u8 empty_dev_type[8];
2546         unsigned int generated_pin = 0;
2547         struct wpa_supplicant *group = NULL;
2548         int res;
2549
2550         if (group_id) {
2551                 for (group = wpa_s->global->ifaces; group; group = group->next)
2552                 {
2553                         struct wpa_ssid *s = group->current_ssid;
2554                         if (s != NULL &&
2555                             s->mode == WPAS_MODE_P2P_GO &&
2556                             group_id_len - ETH_ALEN == s->ssid_len &&
2557                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2558                                       s->ssid_len) == 0)
2559                                 break;
2560                 }
2561         }
2562
2563         if (pri_dev_type == NULL) {
2564                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2565                 pri_dev_type = empty_dev_type;
2566         }
2567         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2568                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2569                           "dev_capab=0x%x group_capab=0x%x%s%s",
2570                           MAC2STR(dev_addr),
2571                           wps_dev_type_bin2str(pri_dev_type, devtype,
2572                                                sizeof(devtype)),
2573                           dev_name, supp_config_methods, dev_capab, group_capab,
2574                           group ? " group=" : "",
2575                           group ? group->ifname : "");
2576         if (os_snprintf_error(sizeof(params), res))
2577                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2578         params[sizeof(params) - 1] = '\0';
2579
2580         if (config_methods & WPS_CONFIG_DISPLAY) {
2581                 if (wps_generate_pin(&generated_pin) < 0) {
2582                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2583                         wpas_notify_p2p_provision_discovery(
2584                                 wpa_s, peer, 0 /* response */,
2585                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2586                         return;
2587                 }
2588                 wpas_prov_disc_local_display(wpa_s, peer, params,
2589                                              generated_pin);
2590         } else if (config_methods & WPS_CONFIG_KEYPAD)
2591                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2592         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2593                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2594                                MACSTR "%s", MAC2STR(peer), params);
2595
2596         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2597                                             P2P_PROV_DISC_SUCCESS,
2598                                             config_methods, generated_pin);
2599 }
2600
2601
2602 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2603 {
2604         struct wpa_supplicant *wpa_s = ctx;
2605         unsigned int generated_pin = 0;
2606         char params[20];
2607
2608         if (wpa_s->pending_pd_before_join &&
2609             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2610              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2611                 wpa_s->pending_pd_before_join = 0;
2612                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2613                            "join-existing-group operation");
2614                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2615                 return;
2616         }
2617
2618         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2619             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2620                 int res;
2621
2622                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2623                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2624                 if (os_snprintf_error(sizeof(params), res))
2625                         params[sizeof(params) - 1] = '\0';
2626         } else
2627                 params[0] = '\0';
2628
2629         if (config_methods & WPS_CONFIG_DISPLAY)
2630                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2631         else if (config_methods & WPS_CONFIG_KEYPAD) {
2632                 if (wps_generate_pin(&generated_pin) < 0) {
2633                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2634                         wpas_notify_p2p_provision_discovery(
2635                                 wpa_s, peer, 0 /* response */,
2636                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2637                         return;
2638                 }
2639                 wpas_prov_disc_local_display(wpa_s, peer, params,
2640                                              generated_pin);
2641         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2642                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2643                                MACSTR "%s", MAC2STR(peer), params);
2644
2645         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2646                                             P2P_PROV_DISC_SUCCESS,
2647                                             config_methods, generated_pin);
2648 }
2649
2650
2651 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2652                                 enum p2p_prov_disc_status status,
2653                                 u32 adv_id, const u8 *adv_mac,
2654                                 const char *deferred_session_resp)
2655 {
2656         struct wpa_supplicant *wpa_s = ctx;
2657
2658         if (wpa_s->p2p_fallback_to_go_neg) {
2659                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2660                         "failed - fall back to GO Negotiation");
2661                 wpa_msg_global(wpa_s->parent, MSG_INFO,
2662                                P2P_EVENT_FALLBACK_TO_GO_NEG
2663                                "reason=PD-failed");
2664                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2665                 return;
2666         }
2667
2668         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2669                 wpa_s->pending_pd_before_join = 0;
2670                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2671                            "join-existing-group operation (no ACK for PD "
2672                            "Req attempts)");
2673                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2674                 return;
2675         }
2676
2677         if (adv_id && adv_mac && deferred_session_resp) {
2678                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2679                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2680                                " deferred_session_resp='%s'",
2681                                MAC2STR(peer), status, adv_id,
2682                                deferred_session_resp);
2683         } else if (adv_id && adv_mac) {
2684                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2685                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2686                                MAC2STR(peer), status, adv_id);
2687         } else {
2688                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2689                                " p2p_dev_addr=" MACSTR " status=%d",
2690                                MAC2STR(peer), status);
2691         }
2692
2693         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2694                                             status, 0, 0);
2695 }
2696
2697
2698 static int freq_included(struct wpa_supplicant *wpa_s,
2699                          const struct p2p_channels *channels,
2700                          unsigned int freq)
2701 {
2702         if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2703             wpas_p2p_go_is_peer_freq(wpa_s, freq))
2704                 return 1;
2705         return 0;
2706 }
2707
2708
2709 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2710 {
2711         unsigned int num = P2P_MAX_CHANNELS;
2712         int *common_freqs;
2713         int ret;
2714
2715         p2p_go_dump_common_freqs(wpa_s);
2716         common_freqs = os_calloc(num, sizeof(int));
2717         if (!common_freqs)
2718                 return;
2719
2720         ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2721         if (ret < 0) {
2722                 wpa_dbg(wpa_s, MSG_DEBUG,
2723                         "P2P: Failed to get group common freqs");
2724                 os_free(common_freqs);
2725                 return;
2726         }
2727
2728         os_free(wpa_s->p2p_group_common_freqs);
2729         wpa_s->p2p_group_common_freqs = common_freqs;
2730         wpa_s->p2p_group_common_freqs_num = num;
2731         p2p_go_dump_common_freqs(wpa_s);
2732 }
2733
2734
2735 /*
2736  * Check if the given frequency is one of the possible operating frequencies
2737  * set after the completion of the GO Negotiation.
2738  */
2739 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2740 {
2741         unsigned int i;
2742
2743         p2p_go_dump_common_freqs(wpa_s);
2744
2745         /* assume no restrictions */
2746         if (!wpa_s->p2p_group_common_freqs_num)
2747                 return 1;
2748
2749         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2750                 if (wpa_s->p2p_group_common_freqs[i] == freq)
2751                         return 1;
2752         }
2753         return 0;
2754 }
2755
2756
2757 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2758                                struct sta_info *sta, void *ctx)
2759 {
2760         int *ecsa_support = ctx;
2761
2762         *ecsa_support &= sta->ecsa_supported;
2763
2764         return 0;
2765 }
2766
2767
2768 /* Check if all the peers support eCSA */
2769 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2770 {
2771         int ecsa_support = 1;
2772
2773         ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2774                         &ecsa_support);
2775
2776         return ecsa_support;
2777 }
2778
2779
2780 /**
2781  * Pick the best frequency to use from all the currently used frequencies.
2782  */
2783 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2784                                         struct wpa_used_freq_data *freqs,
2785                                         unsigned int num)
2786 {
2787         unsigned int i, c;
2788
2789         /* find a candidate freq that is supported by P2P */
2790         for (c = 0; c < num; c++)
2791                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2792                         break;
2793
2794         if (c == num)
2795                 return 0;
2796
2797         /* once we have a candidate, try to find a 'better' one */
2798         for (i = c + 1; i < num; i++) {
2799                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2800                         continue;
2801
2802                 /*
2803                  * 1. Infrastructure station interfaces have higher preference.
2804                  * 2. P2P Clients have higher preference.
2805                  * 3. All others.
2806                  */
2807                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2808                         c = i;
2809                         break;
2810                 }
2811
2812                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2813                         c = i;
2814         }
2815         return freqs[c].freq;
2816 }
2817
2818
2819 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2820                                   const u8 *go_dev_addr, const u8 *ssid,
2821                                   size_t ssid_len, int *go, u8 *group_bssid,
2822                                   int *force_freq, int persistent_group,
2823                                   const struct p2p_channels *channels,
2824                                   int dev_pw_id)
2825 {
2826         struct wpa_supplicant *wpa_s = ctx;
2827         struct wpa_ssid *s;
2828         struct wpa_used_freq_data *freqs;
2829         struct wpa_supplicant *grp;
2830         int best_freq;
2831
2832         if (!persistent_group) {
2833                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2834                            " to join an active group (SSID: %s)",
2835                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2836                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2837                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2838                      == 0 ||
2839                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2840                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2841                                    "authorized invitation");
2842                         goto accept_inv;
2843                 }
2844
2845 #ifdef CONFIG_WPS_NFC
2846                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2847                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2848                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2849                         wpa_s->p2p_wps_method = WPS_NFC;
2850                         wpa_s->pending_join_wps_method = WPS_NFC;
2851                         os_memcpy(wpa_s->pending_join_dev_addr,
2852                                   go_dev_addr, ETH_ALEN);
2853                         os_memcpy(wpa_s->pending_join_iface_addr,
2854                                   bssid, ETH_ALEN);
2855                         goto accept_inv;
2856                 }
2857 #endif /* CONFIG_WPS_NFC */
2858
2859                 /*
2860                  * Do not accept the invitation automatically; notify user and
2861                  * request approval.
2862                  */
2863                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2864         }
2865
2866         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2867         if (grp) {
2868                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2869                            "running persistent group");
2870                 if (*go)
2871                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2872                 goto accept_inv;
2873         }
2874
2875         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2876             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2877                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2878                            "invitation to re-invoke a persistent group");
2879                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2880         } else if (!wpa_s->conf->persistent_reconnect)
2881                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2882
2883         for (s = wpa_s->conf->ssid; s; s = s->next) {
2884                 if (s->disabled == 2 &&
2885                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2886                     s->ssid_len == ssid_len &&
2887                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2888                         break;
2889         }
2890
2891         if (!s) {
2892                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2893                            " requested reinvocation of an unknown group",
2894                            MAC2STR(sa));
2895                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2896         }
2897
2898         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2899                 *go = 1;
2900                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2901                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2902                                    "interface is already in use - reject "
2903                                    "invitation");
2904                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2905                 }
2906                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2907         } else if (s->mode == WPAS_MODE_P2P_GO) {
2908                 *go = 1;
2909                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2910                 {
2911                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2912                                    "interface address for the group");
2913                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2914                 }
2915                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2916                           ETH_ALEN);
2917         }
2918
2919 accept_inv:
2920         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2921
2922         best_freq = 0;
2923         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2924                           sizeof(struct wpa_used_freq_data));
2925         if (freqs) {
2926                 int num_channels = wpa_s->num_multichan_concurrent;
2927                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2928                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2929                 os_free(freqs);
2930         }
2931
2932         /* Get one of the frequencies currently in use */
2933         if (best_freq > 0) {
2934                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2935                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2936
2937                 if (wpa_s->num_multichan_concurrent < 2 ||
2938                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2939                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2940                         *force_freq = best_freq;
2941                 }
2942         }
2943
2944         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2945             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2946                 if (*go == 0) {
2947                         /* We are the client */
2948                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2949                                    "running a GO but we are capable of MCC, "
2950                                    "figure out the best channel to use");
2951                         *force_freq = 0;
2952                 } else if (!freq_included(wpa_s, channels, *force_freq)) {
2953                         /* We are the GO, and *force_freq is not in the
2954                          * intersection */
2955                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2956                                    "in intersection but we are capable of MCC, "
2957                                    "figure out the best channel to use",
2958                                    *force_freq);
2959                         *force_freq = 0;
2960                 }
2961         }
2962
2963         return P2P_SC_SUCCESS;
2964 }
2965
2966
2967 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2968                                      const u8 *ssid, size_t ssid_len,
2969                                      const u8 *go_dev_addr, u8 status,
2970                                      int op_freq)
2971 {
2972         struct wpa_supplicant *wpa_s = ctx;
2973         struct wpa_ssid *s;
2974
2975         for (s = wpa_s->conf->ssid; s; s = s->next) {
2976                 if (s->disabled == 2 &&
2977                     s->ssid_len == ssid_len &&
2978                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2979                         break;
2980         }
2981
2982         if (status == P2P_SC_SUCCESS) {
2983                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2984                            " was accepted; op_freq=%d MHz, SSID=%s",
2985                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
2986                 if (s) {
2987                         int go = s->mode == WPAS_MODE_P2P_GO;
2988                         wpas_p2p_group_add_persistent(
2989                                 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL,
2990                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
2991                                 1);
2992                 } else if (bssid) {
2993                         wpa_s->user_initiated_pd = 0;
2994                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2995                                       wpa_s->p2p_wps_method, 0, op_freq,
2996                                       ssid, ssid_len);
2997                 }
2998                 return;
2999         }
3000
3001         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3002                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3003                            " was rejected (status %u)", MAC2STR(sa), status);
3004                 return;
3005         }
3006
3007         if (!s) {
3008                 if (bssid) {
3009                         wpa_msg_global(wpa_s, MSG_INFO,
3010                                        P2P_EVENT_INVITATION_RECEIVED
3011                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3012                                        " bssid=" MACSTR " unknown-network",
3013                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3014                                        MAC2STR(bssid));
3015                 } else {
3016                         wpa_msg_global(wpa_s, MSG_INFO,
3017                                        P2P_EVENT_INVITATION_RECEIVED
3018                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3019                                        " unknown-network",
3020                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3021                 }
3022                 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3023                                                     bssid, 0, op_freq);
3024                 return;
3025         }
3026
3027         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3028                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3029                                "sa=" MACSTR " persistent=%d freq=%d",
3030                                MAC2STR(sa), s->id, op_freq);
3031         } else {
3032                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3033                                "sa=" MACSTR " persistent=%d",
3034                                MAC2STR(sa), s->id);
3035         }
3036         wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3037                                             s->id, op_freq);
3038 }
3039
3040
3041 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3042                                         struct wpa_ssid *ssid,
3043                                         const u8 *peer, int inv)
3044 {
3045         size_t i;
3046         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3047
3048         if (ssid == NULL)
3049                 return;
3050
3051         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3052                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3053                               ETH_ALEN) == 0)
3054                         break;
3055         }
3056         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3057                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3058                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3059                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3060                                    "due to invitation result", ssid->id);
3061                         wpas_notify_network_removed(wpa_s, ssid);
3062                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3063                         return;
3064                 }
3065                 return; /* Peer not found in client list */
3066         }
3067
3068         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3069                    "group %d client list%s",
3070                    MAC2STR(peer), ssid->id,
3071                    inv ? " due to invitation result" : "");
3072         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3073                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3074                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3075         ssid->num_p2p_clients--;
3076         if (p2p_wpa_s->conf->update_config &&
3077             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3078                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3079 }
3080
3081
3082 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3083                                           const u8 *peer)
3084 {
3085         struct wpa_ssid *ssid;
3086
3087         wpa_s = wpa_s->global->p2p_invite_group;
3088         if (wpa_s == NULL)
3089                 return; /* No known invitation group */
3090         ssid = wpa_s->current_ssid;
3091         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3092             !ssid->p2p_persistent_group)
3093                 return; /* Not operating as a GO in persistent group */
3094         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3095                                        ssid->ssid, ssid->ssid_len);
3096         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3097 }
3098
3099
3100 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3101                                    const struct p2p_channels *channels,
3102                                    const u8 *peer, int neg_freq,
3103                                    int peer_oper_freq)
3104 {
3105         struct wpa_supplicant *wpa_s = ctx;
3106         struct wpa_ssid *ssid;
3107         int freq;
3108
3109         if (bssid) {
3110                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3111                                "status=%d " MACSTR,
3112                                status, MAC2STR(bssid));
3113         } else {
3114                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3115                                "status=%d ", status);
3116         }
3117         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3118
3119         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3120                    status, MAC2STR(peer));
3121         if (wpa_s->pending_invite_ssid_id == -1) {
3122                 struct wpa_supplicant *group_if =
3123                         wpa_s->global->p2p_invite_group;
3124
3125                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3126                         wpas_remove_persistent_client(wpa_s, peer);
3127
3128                 /*
3129                  * Invitation to an active group. If this is successful and we
3130                  * are the GO, set the client wait to postpone some concurrent
3131                  * operations and to allow provisioning and connection to happen
3132                  * more quickly.
3133                  */
3134                 if (status == P2P_SC_SUCCESS &&
3135                     group_if && group_if->current_ssid &&
3136                     group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3137                         os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3138 #ifdef CONFIG_TESTING_OPTIONS
3139                         if (group_if->p2p_go_csa_on_inv) {
3140                                 wpa_printf(MSG_DEBUG,
3141                                            "Testing: force P2P GO CSA after invitation");
3142                                 eloop_cancel_timeout(
3143                                         wpas_p2p_reconsider_moving_go,
3144                                         wpa_s, NULL);
3145                                 eloop_register_timeout(
3146                                         0, 50000,
3147                                         wpas_p2p_reconsider_moving_go,
3148                                         wpa_s, NULL);
3149                         }
3150 #endif /* CONFIG_TESTING_OPTIONS */
3151                 }
3152                 return;
3153         }
3154
3155         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3156                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3157                            "invitation exchange to indicate readiness for "
3158                            "re-invocation");
3159         }
3160
3161         if (status != P2P_SC_SUCCESS) {
3162                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3163                         ssid = wpa_config_get_network(
3164                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3165                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3166                 }
3167                 wpas_p2p_remove_pending_group_interface(wpa_s);
3168                 return;
3169         }
3170
3171         ssid = wpa_config_get_network(wpa_s->conf,
3172                                       wpa_s->pending_invite_ssid_id);
3173         if (ssid == NULL) {
3174                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3175                            "data matching with invitation");
3176                 return;
3177         }
3178
3179         /*
3180          * The peer could have missed our ctrl::ack frame for Invitation
3181          * Response and continue retransmitting the frame. To reduce the
3182          * likelihood of the peer not getting successful TX status for the
3183          * Invitation Response frame, wait a short time here before starting
3184          * the persistent group so that we will remain on the current channel to
3185          * acknowledge any possible retransmission from the peer.
3186          */
3187         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3188                 "starting persistent group");
3189         os_sleep(0, 50000);
3190
3191         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3192             freq_included(wpa_s, channels, neg_freq))
3193                 freq = neg_freq;
3194         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3195                  freq_included(wpa_s, channels, peer_oper_freq))
3196                 freq = peer_oper_freq;
3197         else
3198                 freq = 0;
3199
3200         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3201                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3202         wpas_p2p_group_add_persistent(wpa_s, ssid,
3203                                       ssid->mode == WPAS_MODE_P2P_GO,
3204                                       wpa_s->p2p_persistent_go_freq,
3205                                       freq,
3206                                       wpa_s->p2p_go_vht_center_freq2,
3207                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3208                                       wpa_s->p2p_go_max_oper_chwidth,
3209                                       channels,
3210                                       ssid->mode == WPAS_MODE_P2P_GO ?
3211                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3212                                       0, 1);
3213 }
3214
3215
3216 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3217                                     unsigned int freq)
3218 {
3219         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3220                 return 1;
3221         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3222 }
3223
3224
3225 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3226 {
3227         reg->channel[reg->channels] = chan;
3228         reg->channels++;
3229 }
3230
3231
3232 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3233                                      struct p2p_channels *chan,
3234                                      struct p2p_channels *cli_chan)
3235 {
3236         int i, cla = 0;
3237
3238         wpa_s->global->p2p_24ghz_social_channels = 1;
3239
3240         os_memset(cli_chan, 0, sizeof(*cli_chan));
3241
3242         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3243                    "band");
3244
3245         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3246         chan->reg_class[cla].reg_class = 81;
3247         chan->reg_class[cla].channels = 0;
3248         for (i = 0; i < 11; i++) {
3249                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3250                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3251         }
3252         if (chan->reg_class[cla].channels)
3253                 cla++;
3254
3255         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3256                    "band");
3257
3258         /* Operating class 115 - 5 GHz, channels 36-48 */
3259         chan->reg_class[cla].reg_class = 115;
3260         chan->reg_class[cla].channels = 0;
3261         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3262                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3263         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3264                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3265         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3266                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3267         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3268                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3269         if (chan->reg_class[cla].channels)
3270                 cla++;
3271
3272         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3273                    "band");
3274
3275         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3276         chan->reg_class[cla].reg_class = 124;
3277         chan->reg_class[cla].channels = 0;
3278         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3279                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3280         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3281                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3282         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3283                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3284         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3285                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3286         if (chan->reg_class[cla].channels)
3287                 cla++;
3288
3289         chan->reg_classes = cla;
3290         return 0;
3291 }
3292
3293
3294 enum chan_allowed {
3295         NOT_ALLOWED, NO_IR, ALLOWED
3296 };
3297
3298 static int has_channel(struct wpa_global *global,
3299                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3300 {
3301         int i;
3302         unsigned int freq;
3303
3304         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3305                 chan * 5;
3306         if (wpas_p2p_disallowed_freq(global, freq))
3307                 return NOT_ALLOWED;
3308
3309         for (i = 0; i < mode->num_channels; i++) {
3310                 if (mode->channels[i].chan == chan) {
3311                         if (flags)
3312                                 *flags = mode->channels[i].flag;
3313                         if (mode->channels[i].flag &
3314                             (HOSTAPD_CHAN_DISABLED |
3315                              HOSTAPD_CHAN_RADAR))
3316                                 return NOT_ALLOWED;
3317                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3318                                 return NO_IR;
3319                         return ALLOWED;
3320                 }
3321         }
3322
3323         return NOT_ALLOWED;
3324 }
3325
3326
3327 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3328                                      struct hostapd_hw_modes *mode,
3329                                      u8 channel)
3330 {
3331         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3332         unsigned int i;
3333
3334         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3335                 return 0;
3336
3337         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3338                 /*
3339                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3340                  * so the center channel is 6 channels away from the start/end.
3341                  */
3342                 if (channel >= center_channels[i] - 6 &&
3343                     channel <= center_channels[i] + 6)
3344                         return center_channels[i];
3345
3346         return 0;
3347 }
3348
3349
3350 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3351                                                struct hostapd_hw_modes *mode,
3352                                                u8 channel, u8 bw)
3353 {
3354         u8 center_chan;
3355         int i, flags;
3356         enum chan_allowed res, ret = ALLOWED;
3357
3358         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3359         if (!center_chan)
3360                 return NOT_ALLOWED;
3361         if (center_chan >= 58 && center_chan <= 138)
3362                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3363
3364         /* check all the channels are available */
3365         for (i = 0; i < 4; i++) {
3366                 int adj_chan = center_chan - 6 + i * 4;
3367
3368                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3369                 if (res == NOT_ALLOWED)
3370                         return NOT_ALLOWED;
3371                 if (res == NO_IR)
3372                         ret = NO_IR;
3373
3374                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3375                         return NOT_ALLOWED;
3376                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3377                         return NOT_ALLOWED;
3378                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3379                         return NOT_ALLOWED;
3380                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3381                         return NOT_ALLOWED;
3382         }
3383
3384         return ret;
3385 }
3386
3387
3388 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3389                                      struct hostapd_hw_modes *mode,
3390                                      u8 channel)
3391 {
3392         u8 center_channels[] = { 50, 114 };
3393         unsigned int i;
3394
3395         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3396                 return 0;
3397
3398         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3399                 /*
3400                  * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3401                  * so the center channel is 14 channels away from the start/end.
3402                  */
3403                 if (channel >= center_channels[i] - 14 &&
3404                     channel <= center_channels[i] + 14)
3405                         return center_channels[i];
3406
3407         return 0;
3408 }
3409
3410
3411 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3412                                                struct hostapd_hw_modes *mode,
3413                                                u8 channel, u8 bw)
3414 {
3415         u8 center_chan;
3416         int i, flags;
3417         enum chan_allowed res, ret = ALLOWED;
3418
3419         center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3420         if (!center_chan)
3421                 return NOT_ALLOWED;
3422         /* VHT 160 MHz uses DFS channels in most countries. */
3423
3424         /* Check all the channels are available */
3425         for (i = 0; i < 8; i++) {
3426                 int adj_chan = center_chan - 14 + i * 4;
3427
3428                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3429                 if (res == NOT_ALLOWED)
3430                         return NOT_ALLOWED;
3431
3432                 if (res == NO_IR)
3433                         ret = NO_IR;
3434
3435                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3436                         return NOT_ALLOWED;
3437                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3438                         return NOT_ALLOWED;
3439                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3440                         return NOT_ALLOWED;
3441                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3442                         return NOT_ALLOWED;
3443                 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3444                         return NOT_ALLOWED;
3445                 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3446                         return NOT_ALLOWED;
3447                 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3448                         return NOT_ALLOWED;
3449                 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3450                         return NOT_ALLOWED;
3451         }
3452
3453         return ret;
3454 }
3455
3456
3457 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3458                                                  struct hostapd_hw_modes *mode,
3459                                                  u8 channel, u8 bw)
3460 {
3461         int flag = 0;
3462         enum chan_allowed res, res2;
3463
3464         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3465         if (bw == BW40MINUS) {
3466                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3467                         return NOT_ALLOWED;
3468                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3469         } else if (bw == BW40PLUS) {
3470                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3471                         return NOT_ALLOWED;
3472                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3473         } else if (bw == BW80) {
3474                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3475         } else if (bw == BW160) {
3476                 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3477         }
3478
3479         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3480                 return NOT_ALLOWED;
3481         if (res == NO_IR || res2 == NO_IR)
3482                 return NO_IR;
3483         return res;
3484 }
3485
3486
3487 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3488                                    struct p2p_channels *chan,
3489                                    struct p2p_channels *cli_chan)
3490 {
3491         struct hostapd_hw_modes *mode;
3492         int cla, op, cli_cla;
3493
3494         if (wpa_s->hw.modes == NULL) {
3495                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3496                            "of all supported channels; assume dualband "
3497                            "support");
3498                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3499         }
3500
3501         cla = cli_cla = 0;
3502
3503         for (op = 0; global_op_class[op].op_class; op++) {
3504                 const struct oper_class_map *o = &global_op_class[op];
3505                 u8 ch;
3506                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3507
3508                 if (o->p2p == NO_P2P_SUPP)
3509                         continue;
3510
3511                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3512                 if (mode == NULL)
3513                         continue;
3514                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3515                         wpa_s->global->p2p_24ghz_social_channels = 1;
3516                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3517                         enum chan_allowed res;
3518                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3519                         if (res == ALLOWED) {
3520                                 if (reg == NULL) {
3521                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3522                                                    o->op_class);
3523                                         reg = &chan->reg_class[cla];
3524                                         cla++;
3525                                         reg->reg_class = o->op_class;
3526                                 }
3527                                 reg->channel[reg->channels] = ch;
3528                                 reg->channels++;
3529                         } else if (res == NO_IR &&
3530                                    wpa_s->conf->p2p_add_cli_chan) {
3531                                 if (cli_reg == NULL) {
3532                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3533                                                    o->op_class);
3534                                         cli_reg = &cli_chan->reg_class[cli_cla];
3535                                         cli_cla++;
3536                                         cli_reg->reg_class = o->op_class;
3537                                 }
3538                                 cli_reg->channel[cli_reg->channels] = ch;
3539                                 cli_reg->channels++;
3540                         }
3541                 }
3542                 if (reg) {
3543                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3544                                     reg->channel, reg->channels);
3545                 }
3546                 if (cli_reg) {
3547                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3548                                     cli_reg->channel, cli_reg->channels);
3549                 }
3550         }
3551
3552         chan->reg_classes = cla;
3553         cli_chan->reg_classes = cli_cla;
3554
3555         return 0;
3556 }
3557
3558
3559 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3560                            struct hostapd_hw_modes *mode, u8 channel)
3561 {
3562         int op;
3563         enum chan_allowed ret;
3564
3565         for (op = 0; global_op_class[op].op_class; op++) {
3566                 const struct oper_class_map *o = &global_op_class[op];
3567                 u8 ch;
3568
3569                 if (o->p2p == NO_P2P_SUPP)
3570                         continue;
3571
3572                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3573                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3574                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3575                             ch != channel)
3576                                 continue;
3577                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3578                         if (ret == ALLOWED)
3579                                 return (o->bw == BW40MINUS) ? -1 : 1;
3580                 }
3581         }
3582         return 0;
3583 }
3584
3585
3586 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3587                               struct hostapd_hw_modes *mode, u8 channel)
3588 {
3589         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3590                 return 0;
3591
3592         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3593 }
3594
3595
3596 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3597                                struct hostapd_hw_modes *mode, u8 channel)
3598 {
3599         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3600                 return 0;
3601         return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3602 }
3603
3604
3605 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3606                         size_t buf_len)
3607 {
3608         struct wpa_supplicant *wpa_s = ctx;
3609
3610         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3611                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3612                         break;
3613         }
3614         if (wpa_s == NULL)
3615                 return -1;
3616
3617         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3618 }
3619
3620
3621 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3622                                               const u8 *ssid, size_t ssid_len)
3623 {
3624         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3625                 struct wpa_ssid *s = wpa_s->current_ssid;
3626                 if (s == NULL)
3627                         continue;
3628                 if (s->mode != WPAS_MODE_P2P_GO &&
3629                     s->mode != WPAS_MODE_AP &&
3630                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3631                         continue;
3632                 if (s->ssid_len != ssid_len ||
3633                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3634                         continue;
3635                 return wpa_s;
3636         }
3637
3638         return NULL;
3639
3640 }
3641
3642
3643 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3644                                                   const u8 *peer_dev_addr)
3645 {
3646         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3647                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3648                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3649                         continue;
3650                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3651                         return wpa_s;
3652         }
3653
3654         return NULL;
3655 }
3656
3657
3658 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3659 {
3660         struct wpa_supplicant *wpa_s = ctx;
3661
3662         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3663 }
3664
3665
3666 static int wpas_is_concurrent_session_active(void *ctx)
3667 {
3668         struct wpa_supplicant *wpa_s = ctx;
3669         struct wpa_supplicant *ifs;
3670
3671         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3672                 if (ifs == wpa_s)
3673                         continue;
3674                 if (ifs->wpa_state > WPA_ASSOCIATED)
3675                         return 1;
3676         }
3677         return 0;
3678 }
3679
3680
3681 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3682 {
3683         struct wpa_supplicant *wpa_s = ctx;
3684         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3685 }
3686
3687
3688 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3689                                   const char *conf_p2p_dev)
3690 {
3691         struct wpa_interface iface;
3692         struct wpa_supplicant *p2pdev_wpa_s;
3693         char ifname[100];
3694         char force_name[100];
3695         int ret;
3696
3697         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3698                           wpa_s->ifname);
3699         if (os_snprintf_error(sizeof(ifname), ret))
3700                 return -1;
3701         force_name[0] = '\0';
3702         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3703         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3704                              force_name, wpa_s->pending_interface_addr, NULL);
3705         if (ret < 0) {
3706                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3707                 return ret;
3708         }
3709         os_strlcpy(wpa_s->pending_interface_name, ifname,
3710                    sizeof(wpa_s->pending_interface_name));
3711
3712         os_memset(&iface, 0, sizeof(iface));
3713         iface.p2p_mgmt = 1;
3714         iface.ifname = wpa_s->pending_interface_name;
3715         iface.driver = wpa_s->driver->name;
3716         iface.driver_param = wpa_s->conf->driver_param;
3717
3718         /*
3719          * If a P2P Device configuration file was given, use it as the interface
3720          * configuration file (instead of using parent's configuration file.
3721          */
3722         if (conf_p2p_dev) {
3723                 iface.confname = conf_p2p_dev;
3724                 iface.ctrl_interface = NULL;
3725         } else {
3726                 iface.confname = wpa_s->confname;
3727                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3728         }
3729
3730         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3731         if (!p2pdev_wpa_s) {
3732                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3733                 return -1;
3734         }
3735
3736         wpa_s->pending_interface_name[0] = '\0';
3737         return 0;
3738 }
3739
3740
3741 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3742                                const u8 *noa, size_t noa_len)
3743 {
3744         struct wpa_supplicant *wpa_s, *intf = ctx;
3745         char hex[100];
3746
3747         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3748                 if (wpa_s->waiting_presence_resp)
3749                         break;
3750         }
3751         if (!wpa_s) {
3752                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3753                 return;
3754         }
3755         wpa_s->waiting_presence_resp = 0;
3756
3757         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3758         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3759                 " status=%u noa=%s", MAC2STR(src), status, hex);
3760 }
3761
3762
3763 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3764                                      size_t ssid_len, u8 *go_dev_addr,
3765                                      u8 *ret_ssid, size_t *ret_ssid_len,
3766                                      u8 *intended_iface_addr)
3767 {
3768         struct wpa_supplicant *wpa_s = ctx;
3769         struct wpa_ssid *s;
3770
3771         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3772         if (s) {
3773                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3774                 *ret_ssid_len = s->ssid_len;
3775                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3776
3777                 if (s->mode != WPAS_MODE_P2P_GO) {
3778                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3779                 } else if (wpas_p2p_create_iface(wpa_s)) {
3780                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3781                                 return 0;
3782
3783                         os_memcpy(intended_iface_addr,
3784                                   wpa_s->pending_interface_addr, ETH_ALEN);
3785                 } else {
3786                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3787                                   ETH_ALEN);
3788                 }
3789                 return 1;
3790         }
3791
3792         return 0;
3793 }
3794
3795
3796 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3797                             u8 *ssid, size_t *ssid_len, int *group_iface,
3798                             unsigned int *freq)
3799 {
3800         struct wpa_supplicant *wpa_s = ctx;
3801         struct wpa_supplicant *go;
3802         struct wpa_ssid *s;
3803
3804         /*
3805          * group_iface will be set to 1 only if a dedicated interface for P2P
3806          * role is required. First, we try to reuse an active GO. However,
3807          * if it is not present, we will try to reactivate an existing
3808          * persistent group and set group_iface to 1, so the caller will know
3809          * that the pending interface should be used.
3810          */
3811         *group_iface = 0;
3812
3813         if (freq)
3814                 *freq = 0;
3815
3816         go = wpas_p2p_get_go_group(wpa_s);
3817         if (!go) {
3818                 s = wpas_p2p_get_persistent_go(wpa_s);
3819                 *group_iface = wpas_p2p_create_iface(wpa_s);
3820                 if (s)
3821                         os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3822                 else
3823                         return 0;
3824         } else {
3825                 s = go->current_ssid;
3826                 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3827                 if (freq)
3828                         *freq = go->assoc_freq;
3829         }
3830
3831         os_memcpy(ssid, s->ssid, s->ssid_len);
3832         *ssid_len = s->ssid_len;
3833
3834         return 1;
3835 }
3836
3837
3838 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3839                                     const u8 *ssid, size_t ssid_len)
3840 {
3841         struct wpa_supplicant *wpa_s = ctx;
3842         struct wpa_ssid *s;
3843         int save_config = 0;
3844         size_t i;
3845
3846         /* Start with our first choice of Persistent Groups */
3847         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3848                 if (go && ssid && ssid_len &&
3849                     s->ssid_len == ssid_len &&
3850                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3851                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3852                         break;
3853
3854                 /* Remove stale persistent group */
3855                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3856                         wpa_config_remove_network(wpa_s->conf, s->id);
3857                         save_config = 1;
3858                         continue;
3859                 }
3860
3861                 for (i = 0; i < s->num_p2p_clients; i++) {
3862                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3863                                       peer, ETH_ALEN) != 0)
3864                                 continue;
3865
3866                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3867                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3868                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3869                         break;
3870                 }
3871                 s->num_p2p_clients--;
3872                 save_config = 1;
3873         }
3874
3875         if (save_config)
3876                 p2p_config_write(wpa_s);
3877
3878         /* Return TRUE if valid SSID remains */
3879         return s != NULL;
3880 }
3881
3882
3883 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3884                                        const u8 *feat_cap, size_t feat_cap_len)
3885 {
3886         static const char pref[] = " feature_cap=";
3887         int ret;
3888
3889         buf[0] = '\0';
3890
3891         /*
3892          * We expect a feature capability to contain at least one byte to be
3893          * reported. The string buffer provided by the caller function is
3894          * expected to be big enough to contain all bytes of the attribute for
3895          * known specifications. This function truncates the reported bytes if
3896          * the feature capability data exceeds the string buffer size.
3897          */
3898         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3899                 return;
3900
3901         os_memcpy(buf, pref, sizeof(pref));
3902         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3903                                buf_len - sizeof(pref) + 1,
3904                                feat_cap, feat_cap_len);
3905
3906         if (ret != (2 * (int) feat_cap_len))
3907                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3908 }
3909
3910
3911 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3912                                     const u8 *adv_mac, const u8 *ses_mac,
3913                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3914                                     u8 conncap, int passwd_id,
3915                                     const u8 *persist_ssid,
3916                                     size_t persist_ssid_size, int response_done,
3917                                     int prov_start, const char *session_info,
3918                                     const u8 *feat_cap, size_t feat_cap_len,
3919                                     unsigned int freq,
3920                                     const u8 *group_ssid, size_t group_ssid_len)
3921 {
3922         struct wpa_supplicant *wpa_s = ctx;
3923         u8 mac[ETH_ALEN];
3924         struct wpa_ssid *persistent_go, *stale, *s = NULL;
3925         int save_config = 0;
3926         struct wpa_supplicant *go_wpa_s;
3927         char feat_cap_str[256];
3928
3929         if (!dev)
3930                 return;
3931
3932         os_memset(mac, 0, ETH_ALEN);
3933         if (!adv_mac)
3934                 adv_mac = mac;
3935         if (!ses_mac)
3936                 ses_mac = mac;
3937         if (!grp_mac)
3938                 grp_mac = mac;
3939
3940         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3941                                    feat_cap, feat_cap_len);
3942
3943         if (prov_start) {
3944                 if (session_info == NULL) {
3945                         wpa_msg_global(wpa_s, MSG_INFO,
3946                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3947                                        " adv_id=%x conncap=%x"
3948                                        " adv_mac=" MACSTR
3949                                        " session=%x mac=" MACSTR
3950                                        " dev_passwd_id=%d%s",
3951                                        MAC2STR(dev), adv_id, conncap,
3952                                        MAC2STR(adv_mac),
3953                                        ses_id, MAC2STR(ses_mac),
3954                                        passwd_id, feat_cap_str);
3955                 } else {
3956                         wpa_msg_global(wpa_s, MSG_INFO,
3957                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3958                                        " adv_id=%x conncap=%x"
3959                                        " adv_mac=" MACSTR
3960                                        " session=%x mac=" MACSTR
3961                                        " dev_passwd_id=%d info='%s'%s",
3962                                        MAC2STR(dev), adv_id, conncap,
3963                                        MAC2STR(adv_mac),
3964                                        ses_id, MAC2STR(ses_mac),
3965                                        passwd_id, session_info, feat_cap_str);
3966                 }
3967                 return;
3968         }
3969
3970         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
3971         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3972
3973         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
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 && !persistent_go->num_p2p_clients) {
3978                         /* remove empty persistent GO */
3979                         wpa_config_remove_network(wpa_s->conf,
3980                                                   persistent_go->id);
3981                 }
3982
3983                 wpa_msg_global(wpa_s, MSG_INFO,
3984                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3985                                " status=%d"
3986                                " adv_id=%x adv_mac=" MACSTR
3987                                " session=%x mac=" MACSTR "%s",
3988                                MAC2STR(dev), status,
3989                                adv_id, MAC2STR(adv_mac),
3990                                ses_id, MAC2STR(ses_mac), feat_cap_str);
3991                 return;
3992         }
3993
3994         /* Clean up stale persistent groups with this device */
3995         if (persist_ssid && persist_ssid_size)
3996                 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
3997                                             persist_ssid_size);
3998
3999         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4000             is_zero_ether_addr(grp_mac)) {
4001                 wpa_dbg(wpa_s, MSG_ERROR,
4002                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4003                 return;
4004         }
4005
4006         for (;;) {
4007                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4008                 if (!stale)
4009                         break;
4010
4011                 if (s && s->ssid_len == stale->ssid_len &&
4012                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4013                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4014                         break;
4015
4016                 /* Remove stale persistent group */
4017                 if (stale->mode != WPAS_MODE_P2P_GO ||
4018                     stale->num_p2p_clients <= 1) {
4019                         wpa_config_remove_network(wpa_s->conf, stale->id);
4020                 } else {
4021                         size_t i;
4022
4023                         for (i = 0; i < stale->num_p2p_clients; i++) {
4024                                 if (os_memcmp(stale->p2p_client_list +
4025                                               i * ETH_ALEN,
4026                                               dev, ETH_ALEN) == 0) {
4027                                         os_memmove(stale->p2p_client_list +
4028                                                    i * ETH_ALEN,
4029                                                    stale->p2p_client_list +
4030                                                    (i + 1) * ETH_ALEN,
4031                                                    (stale->num_p2p_clients -
4032                                                     i - 1) * ETH_ALEN);
4033                                         break;
4034                                 }
4035                         }
4036                         stale->num_p2p_clients--;
4037                 }
4038                 save_config = 1;
4039         }
4040
4041         if (save_config)
4042                 p2p_config_write(wpa_s);
4043
4044         if (s) {
4045                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4046                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4047
4048                 if (persistent_go && s != persistent_go &&
4049                     !persistent_go->num_p2p_clients) {
4050                         /* remove empty persistent GO */
4051                         wpa_config_remove_network(wpa_s->conf,
4052                                                   persistent_go->id);
4053                         /* Save config */
4054                 }
4055
4056                 wpa_msg_global(wpa_s, MSG_INFO,
4057                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4058                                " status=%d"
4059                                " adv_id=%x adv_mac=" MACSTR
4060                                " session=%x mac=" MACSTR
4061                                " persist=%d%s",
4062                                MAC2STR(dev), status,
4063                                adv_id, MAC2STR(adv_mac),
4064                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4065                 return;
4066         }
4067
4068         if (conncap == P2PS_SETUP_GROUP_OWNER) {
4069                 /*
4070                  * We need to copy the interface name. Simply saving a
4071                  * pointer isn't enough, since if we use pending_interface_name
4072                  * it will be overwritten when the group is added.
4073                  */
4074                 char go_ifname[100];
4075
4076                 go_ifname[0] = '\0';
4077                 if (!go_wpa_s) {
4078                         wpa_s->global->pending_p2ps_group = 1;
4079                         wpa_s->global->pending_p2ps_group_freq = freq;
4080
4081                         if (!wpas_p2p_create_iface(wpa_s))
4082                                 os_memcpy(go_ifname, wpa_s->ifname,
4083                                           sizeof(go_ifname));
4084                         else if (wpa_s->pending_interface_name[0])
4085                                 os_memcpy(go_ifname,
4086                                           wpa_s->pending_interface_name,
4087                                           sizeof(go_ifname));
4088
4089                         if (!go_ifname[0]) {
4090                                 wpas_p2ps_prov_complete(
4091                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4092                                         dev, adv_mac, ses_mac,
4093                                         grp_mac, adv_id, ses_id, 0, 0,
4094                                         NULL, 0, 0, 0, NULL, NULL, 0, 0,
4095                                         NULL, 0);
4096                                 return;
4097                         }
4098
4099                         /* If PD Resp complete, start up the GO */
4100                         if (response_done && persistent_go) {
4101                                 wpas_p2p_group_add_persistent(
4102                                         wpa_s, persistent_go,
4103                                         0, 0, freq, 0, 0, 0, 0, NULL,
4104                                         persistent_go->mode ==
4105                                         WPAS_MODE_P2P_GO ?
4106                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4107                                         0, 0);
4108                         } else if (response_done) {
4109                                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4110                         }
4111
4112                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4113                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4114                                           ETH_ALEN);
4115                                 wpa_s->p2ps_method_config_any = 1;
4116                         }
4117                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4118                         os_memcpy(go_ifname, go_wpa_s->ifname,
4119                                   sizeof(go_ifname));
4120
4121                         if (is_zero_ether_addr(grp_mac)) {
4122                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4123                                         "P2P: Setting PIN-1 for ANY");
4124                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4125                                                           "12345670", NULL, 0,
4126                                                           0);
4127                         } else {
4128                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4129                                         "P2P: Setting PIN-1 for " MACSTR,
4130                                         MAC2STR(grp_mac));
4131                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4132                                                           "12345670", NULL, 0,
4133                                                           0);
4134                         }
4135
4136                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4137                         wpa_s->p2ps_method_config_any = 1;
4138                 }
4139
4140                 wpa_msg_global(wpa_s, MSG_INFO,
4141                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4142                                " status=%d conncap=%x"
4143                                " adv_id=%x adv_mac=" MACSTR
4144                                " session=%x mac=" MACSTR
4145                                " dev_passwd_id=%d go=%s%s",
4146                                MAC2STR(dev), status, conncap,
4147                                adv_id, MAC2STR(adv_mac),
4148                                ses_id, MAC2STR(ses_mac),
4149                                passwd_id, go_ifname, feat_cap_str);
4150                 return;
4151         }
4152
4153         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4154                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4155
4156         if (persistent_go && !persistent_go->num_p2p_clients) {
4157                 /* remove empty persistent GO */
4158                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4159         }
4160
4161         if (conncap == P2PS_SETUP_CLIENT) {
4162                 char ssid_hex[32 * 2 + 1];
4163
4164                 if (group_ssid)
4165                         wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex),
4166                                          group_ssid, group_ssid_len);
4167                 else
4168                         ssid_hex[0] = '\0';
4169                 wpa_msg_global(wpa_s, MSG_INFO,
4170                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4171                                " status=%d conncap=%x"
4172                                " adv_id=%x adv_mac=" MACSTR
4173                                " session=%x mac=" MACSTR
4174                                " dev_passwd_id=%d join=" MACSTR "%s%s%s",
4175                                MAC2STR(dev), status, conncap,
4176                                adv_id, MAC2STR(adv_mac),
4177                                ses_id, MAC2STR(ses_mac),
4178                                passwd_id, MAC2STR(grp_mac), feat_cap_str,
4179                                group_ssid ? " group_ssid=" : "", ssid_hex);
4180         } else {
4181                 wpa_msg_global(wpa_s, MSG_INFO,
4182                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4183                                " status=%d conncap=%x"
4184                                " adv_id=%x adv_mac=" MACSTR
4185                                " session=%x mac=" MACSTR
4186                                " dev_passwd_id=%d%s",
4187                                MAC2STR(dev), status, conncap,
4188                                adv_id, MAC2STR(adv_mac),
4189                                ses_id, MAC2STR(ses_mac),
4190                                passwd_id, feat_cap_str);
4191         }
4192 }
4193
4194
4195 static int _wpas_p2p_in_progress(void *ctx)
4196 {
4197         struct wpa_supplicant *wpa_s = ctx;
4198         return wpas_p2p_in_progress(wpa_s);
4199 }
4200
4201
4202 static int wpas_prov_disc_resp_cb(void *ctx)
4203 {
4204         struct wpa_supplicant *wpa_s = ctx;
4205         struct wpa_ssid *persistent_go;
4206         unsigned int freq;
4207
4208         if (!wpa_s->global->pending_p2ps_group)
4209                 return 0;
4210
4211         freq = wpa_s->global->pending_p2ps_group_freq;
4212         wpa_s->global->pending_p2ps_group_freq = 0;
4213         wpa_s->global->pending_p2ps_group = 0;
4214
4215         if (wpas_p2p_get_go_group(wpa_s))
4216                 return 0;
4217         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4218
4219         if (persistent_go) {
4220                 wpas_p2p_group_add_persistent(
4221                         wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL,
4222                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4223                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4224         } else {
4225                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4226         }
4227
4228         return 1;
4229 }
4230
4231
4232 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4233                                        unsigned int *len,
4234                                        unsigned int *freq_list)
4235 {
4236         struct wpa_supplicant *wpa_s = ctx;
4237
4238         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4239                                           WPA_IF_P2P_CLIENT, len, freq_list);
4240 }
4241
4242
4243 /**
4244  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4245  * @global: Pointer to global data from wpa_supplicant_init()
4246  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4247  * Returns: 0 on success, -1 on failure
4248  */
4249 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4250 {
4251         struct p2p_config p2p;
4252         int i;
4253
4254         if (wpa_s->conf->p2p_disabled)
4255                 return 0;
4256
4257         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4258                 return 0;
4259
4260         if (global->p2p)
4261                 return 0;
4262
4263         os_memset(&p2p, 0, sizeof(p2p));
4264         p2p.cb_ctx = wpa_s;
4265         p2p.debug_print = wpas_p2p_debug_print;
4266         p2p.p2p_scan = wpas_p2p_scan;
4267         p2p.send_action = wpas_send_action;
4268         p2p.send_action_done = wpas_send_action_done;
4269         p2p.go_neg_completed = wpas_go_neg_completed;
4270         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4271         p2p.dev_found = wpas_dev_found;
4272         p2p.dev_lost = wpas_dev_lost;
4273         p2p.find_stopped = wpas_find_stopped;
4274         p2p.start_listen = wpas_start_listen;
4275         p2p.stop_listen = wpas_stop_listen;
4276         p2p.send_probe_resp = wpas_send_probe_resp;
4277         p2p.sd_request = wpas_sd_request;
4278         p2p.sd_response = wpas_sd_response;
4279         p2p.prov_disc_req = wpas_prov_disc_req;
4280         p2p.prov_disc_resp = wpas_prov_disc_resp;
4281         p2p.prov_disc_fail = wpas_prov_disc_fail;
4282         p2p.invitation_process = wpas_invitation_process;
4283         p2p.invitation_received = wpas_invitation_received;
4284         p2p.invitation_result = wpas_invitation_result;
4285         p2p.get_noa = wpas_get_noa;
4286         p2p.go_connected = wpas_go_connected;
4287         p2p.presence_resp = wpas_presence_resp;
4288         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4289         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4290         p2p.get_persistent_group = wpas_get_persistent_group;
4291         p2p.get_go_info = wpas_get_go_info;
4292         p2p.remove_stale_groups = wpas_remove_stale_groups;
4293         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4294         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4295         p2p.p2ps_group_capability = p2ps_group_capability;
4296         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4297
4298         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4299         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4300         p2p.dev_name = wpa_s->conf->device_name;
4301         p2p.manufacturer = wpa_s->conf->manufacturer;
4302         p2p.model_name = wpa_s->conf->model_name;
4303         p2p.model_number = wpa_s->conf->model_number;
4304         p2p.serial_number = wpa_s->conf->serial_number;
4305         if (wpa_s->wps) {
4306                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4307                 p2p.config_methods = wpa_s->wps->config_methods;
4308         }
4309
4310         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4311                 wpa_printf(MSG_ERROR,
4312                            "P2P: Failed to configure supported channel list");
4313                 return -1;
4314         }
4315
4316         if (wpa_s->conf->p2p_listen_reg_class &&
4317             wpa_s->conf->p2p_listen_channel) {
4318                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4319                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4320                 p2p.channel_forced = 1;
4321         } else {
4322                 /*
4323                  * Pick one of the social channels randomly as the listen
4324                  * channel.
4325                  */
4326                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4327                                                  &p2p.channel) != 0) {
4328                         wpa_printf(MSG_INFO,
4329                                    "P2P: No social channels supported by the driver - do not enable P2P");
4330                         return 0;
4331                 }
4332                 p2p.channel_forced = 0;
4333         }
4334         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4335                    p2p.reg_class, p2p.channel);
4336
4337         if (wpa_s->conf->p2p_oper_reg_class &&
4338             wpa_s->conf->p2p_oper_channel) {
4339                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4340                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4341                 p2p.cfg_op_channel = 1;
4342                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4343                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4344
4345         } else {
4346                 /*
4347                  * Use random operation channel from 2.4 GHz band social
4348                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4349                  * other preference is indicated.
4350                  */
4351                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4352                                                  &p2p.op_channel) != 0) {
4353                         wpa_printf(MSG_ERROR,
4354                                    "P2P: Failed to select random social channel as operation channel");
4355                         return -1;
4356                 }
4357                 p2p.cfg_op_channel = 0;
4358                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4359                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4360         }
4361
4362         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4363                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4364                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4365         }
4366
4367         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4368                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4369                 p2p.country[2] = 0x04;
4370         } else
4371                 os_memcpy(p2p.country, "XX\x04", 3);
4372
4373         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4374                   WPS_DEV_TYPE_LEN);
4375
4376         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4377         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4378                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4379
4380         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4381                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4382
4383         p2p.max_peers = 100;
4384
4385         if (wpa_s->conf->p2p_ssid_postfix) {
4386                 p2p.ssid_postfix_len =
4387                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4388                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4389                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4390                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4391                           p2p.ssid_postfix_len);
4392         }
4393
4394         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4395
4396         p2p.max_listen = wpa_s->max_remain_on_chan;
4397
4398         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4399             wpa_s->conf->p2p_passphrase_len <= 63)
4400                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4401         else
4402                 p2p.passphrase_len = 8;
4403
4404         global->p2p = p2p_init(&p2p);
4405         if (global->p2p == NULL)
4406                 return -1;
4407         global->p2p_init_wpa_s = wpa_s;
4408
4409         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4410                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4411                         continue;
4412                 p2p_add_wps_vendor_extension(
4413                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4414         }
4415
4416         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4417
4418         return 0;
4419 }
4420
4421
4422 /**
4423  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4424  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4425  *
4426  * This function deinitialize per-interface P2P data.
4427  */
4428 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4429 {
4430         if (wpa_s->driver && wpa_s->drv_priv)
4431                 wpa_drv_probe_req_report(wpa_s, 0);
4432
4433         if (wpa_s->go_params) {
4434                 /* Clear any stored provisioning info */
4435                 p2p_clear_provisioning_info(
4436                         wpa_s->global->p2p,
4437                         wpa_s->go_params->peer_device_addr);
4438         }
4439
4440         os_free(wpa_s->go_params);
4441         wpa_s->go_params = NULL;
4442         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4443         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4444         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4445         wpa_s->p2p_long_listen = 0;
4446         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4447         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4448         wpas_p2p_remove_pending_group_interface(wpa_s);
4449         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4450         wpas_p2p_listen_work_done(wpa_s);
4451         if (wpa_s->p2p_send_action_work) {
4452                 os_free(wpa_s->p2p_send_action_work->ctx);
4453                 radio_work_done(wpa_s->p2p_send_action_work);
4454                 wpa_s->p2p_send_action_work = NULL;
4455         }
4456         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4457
4458         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4459         wpa_s->p2p_oob_dev_pw = NULL;
4460
4461         os_free(wpa_s->p2p_group_common_freqs);
4462         wpa_s->p2p_group_common_freqs = NULL;
4463         wpa_s->p2p_group_common_freqs_num = 0;
4464
4465         /* TODO: remove group interface from the driver if this wpa_s instance
4466          * is on top of a P2P group interface */
4467 }
4468
4469
4470 /**
4471  * wpas_p2p_deinit_global - Deinitialize global P2P module
4472  * @global: Pointer to global data from wpa_supplicant_init()
4473  *
4474  * This function deinitializes the global (per device) P2P module.
4475  */
4476 static void wpas_p2p_deinit_global(struct wpa_global *global)
4477 {
4478         struct wpa_supplicant *wpa_s, *tmp;
4479
4480         wpa_s = global->ifaces;
4481
4482         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4483
4484         /* Remove remaining P2P group interfaces */
4485         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4486                 wpa_s = wpa_s->next;
4487         while (wpa_s) {
4488                 tmp = global->ifaces;
4489                 while (tmp &&
4490                        (tmp == wpa_s ||
4491                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4492                         tmp = tmp->next;
4493                 }
4494                 if (tmp == NULL)
4495                         break;
4496                 /* Disconnect from the P2P group and deinit the interface */
4497                 wpas_p2p_disconnect(tmp);
4498         }
4499
4500         /*
4501          * Deinit GO data on any possibly remaining interface (if main
4502          * interface is used as GO).
4503          */
4504         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4505                 if (wpa_s->ap_iface)
4506                         wpas_p2p_group_deinit(wpa_s);
4507         }
4508
4509         p2p_deinit(global->p2p);
4510         global->p2p = NULL;
4511         global->p2p_init_wpa_s = NULL;
4512 }
4513
4514
4515 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4516 {
4517         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4518             wpa_s->conf->p2p_no_group_iface)
4519                 return 0; /* separate interface disabled per configuration */
4520         if (wpa_s->drv_flags &
4521             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4522              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4523                 return 1; /* P2P group requires a new interface in every case
4524                            */
4525         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4526                 return 0; /* driver does not support concurrent operations */
4527         if (wpa_s->global->ifaces->next)
4528                 return 1; /* more that one interface already in use */
4529         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4530                 return 1; /* this interface is already in use */
4531         return 0;
4532 }
4533
4534
4535 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4536                                  const u8 *peer_addr,
4537                                  enum p2p_wps_method wps_method,
4538                                  int go_intent, const u8 *own_interface_addr,
4539                                  unsigned int force_freq, int persistent_group,
4540                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4541 {
4542         if (persistent_group && wpa_s->conf->persistent_reconnect)
4543                 persistent_group = 2;
4544
4545         /*
4546          * Increase GO config timeout if HT40 is used since it takes some time
4547          * to scan channels for coex purposes before the BSS can be started.
4548          */
4549         p2p_set_config_timeout(wpa_s->global->p2p,
4550                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4551
4552         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4553                            go_intent, own_interface_addr, force_freq,
4554                            persistent_group, ssid ? ssid->ssid : NULL,
4555                            ssid ? ssid->ssid_len : 0,
4556                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4557                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4558                            0);
4559 }
4560
4561
4562 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4563                                 const u8 *peer_addr,
4564                                 enum p2p_wps_method wps_method,
4565                                 int go_intent, const u8 *own_interface_addr,
4566                                 unsigned int force_freq, int persistent_group,
4567                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4568 {
4569         if (persistent_group && wpa_s->conf->persistent_reconnect)
4570                 persistent_group = 2;
4571
4572         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4573                              go_intent, own_interface_addr, force_freq,
4574                              persistent_group, ssid ? ssid->ssid : NULL,
4575                              ssid ? ssid->ssid_len : 0, pref_freq,
4576                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4577                              0);
4578 }
4579
4580
4581 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4582 {
4583         wpa_s->p2p_join_scan_count++;
4584         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4585                    wpa_s->p2p_join_scan_count);
4586         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4587                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4588                            " for join operationg - stop join attempt",
4589                            MAC2STR(wpa_s->pending_join_iface_addr));
4590                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4591                 if (wpa_s->p2p_auto_pd) {
4592                         wpa_s->p2p_auto_pd = 0;
4593                         wpa_msg_global(wpa_s, MSG_INFO,
4594                                        P2P_EVENT_PROV_DISC_FAILURE
4595                                        " p2p_dev_addr=" MACSTR " status=N/A",
4596                                        MAC2STR(wpa_s->pending_join_dev_addr));
4597                         return;
4598                 }
4599                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4600                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4601                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4602         }
4603 }
4604
4605
4606 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4607 {
4608         int res;
4609         unsigned int num, i;
4610         struct wpa_used_freq_data *freqs;
4611
4612         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4613                 /* Multiple channels are supported and not all are in use */
4614                 return 0;
4615         }
4616
4617         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4618                           sizeof(struct wpa_used_freq_data));
4619         if (!freqs)
4620                 return 1;
4621
4622         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4623                                         wpa_s->num_multichan_concurrent);
4624
4625         for (i = 0; i < num; i++) {
4626                 if (freqs[i].freq == freq) {
4627                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4628                                    freq);
4629                         res = 0;
4630                         goto exit_free;
4631                 }
4632         }
4633
4634         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4635         res = 1;
4636
4637 exit_free:
4638         os_free(freqs);
4639         return res;
4640 }
4641
4642
4643 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4644                             const u8 *peer_dev_addr)
4645 {
4646         struct wpa_bss *bss;
4647         int updated;
4648
4649         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4650         if (bss == NULL)
4651                 return -1;
4652         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4653                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4654                            "last scan");
4655                 return 0;
4656         }
4657
4658         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4659                                     &bss->last_update);
4660         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4661                    "%ld.%06ld (%supdated in last scan)",
4662                    bss->last_update.sec, bss->last_update.usec,
4663                    updated ? "": "not ");
4664
4665         return updated;
4666 }
4667
4668
4669 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4670                                    struct wpa_scan_results *scan_res)
4671 {
4672         struct wpa_bss *bss = NULL;
4673         int freq;
4674         u8 iface_addr[ETH_ALEN];
4675
4676         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4677
4678         if (wpa_s->global->p2p_disabled)
4679                 return;
4680
4681         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4682                    scan_res ? (int) scan_res->num : -1,
4683                    wpa_s->p2p_auto_join ? "auto_" : "");
4684
4685         if (scan_res)
4686                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4687
4688         if (wpa_s->p2p_auto_pd) {
4689                 int join = wpas_p2p_peer_go(wpa_s,
4690                                             wpa_s->pending_join_dev_addr);
4691                 if (join == 0 &&
4692                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4693                         wpa_s->auto_pd_scan_retry++;
4694                         bss = wpa_bss_get_bssid_latest(
4695                                 wpa_s, wpa_s->pending_join_dev_addr);
4696                         if (bss) {
4697                                 freq = bss->freq;
4698                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4699                                            "the peer " MACSTR " at %d MHz",
4700                                            wpa_s->auto_pd_scan_retry,
4701                                            MAC2STR(wpa_s->
4702                                                    pending_join_dev_addr),
4703                                            freq);
4704                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4705                                 return;
4706                         }
4707                 }
4708
4709                 if (join < 0)
4710                         join = 0;
4711
4712                 wpa_s->p2p_auto_pd = 0;
4713                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4714                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4715                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4716                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4717                                       wpa_s->pending_join_dev_addr, NULL,
4718                                       wpa_s->pending_pd_config_methods, join,
4719                                       0, wpa_s->user_initiated_pd) < 0) {
4720                         wpa_s->p2p_auto_pd = 0;
4721                         wpa_msg_global(wpa_s, MSG_INFO,
4722                                        P2P_EVENT_PROV_DISC_FAILURE
4723                                        " p2p_dev_addr=" MACSTR " status=N/A",
4724                                        MAC2STR(wpa_s->pending_join_dev_addr));
4725                 }
4726                 return;
4727         }
4728
4729         if (wpa_s->p2p_auto_join) {
4730                 int join = wpas_p2p_peer_go(wpa_s,
4731                                             wpa_s->pending_join_dev_addr);
4732                 if (join < 0) {
4733                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4734                                    "running a GO -> use GO Negotiation");
4735                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4736                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4737                                        "reason=peer-not-running-GO");
4738                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4739                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4740                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4741                                          wpa_s->p2p_go_intent,
4742                                          wpa_s->p2p_connect_freq,
4743                                          wpa_s->p2p_go_vht_center_freq2,
4744                                          wpa_s->p2p_persistent_id,
4745                                          wpa_s->p2p_pd_before_go_neg,
4746                                          wpa_s->p2p_go_ht40,
4747                                          wpa_s->p2p_go_vht,
4748                                          wpa_s->p2p_go_max_oper_chwidth,
4749                                          NULL, 0);
4750                         return;
4751                 }
4752
4753                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4754                            "try to join the group", join ? "" :
4755                            " in older scan");
4756                 if (!join) {
4757                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4758                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4759                         wpa_s->p2p_fallback_to_go_neg = 1;
4760                 }
4761         }
4762
4763         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4764                                  wpa_s->pending_join_iface_addr);
4765         if (freq < 0 &&
4766             p2p_get_interface_addr(wpa_s->global->p2p,
4767                                    wpa_s->pending_join_dev_addr,
4768                                    iface_addr) == 0 &&
4769             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4770             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4771                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4772                            "address for join from " MACSTR " to " MACSTR
4773                            " based on newly discovered P2P peer entry",
4774                            MAC2STR(wpa_s->pending_join_iface_addr),
4775                            MAC2STR(iface_addr));
4776                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4777                           ETH_ALEN);
4778
4779                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4780                                          wpa_s->pending_join_iface_addr);
4781         }
4782         if (freq >= 0) {
4783                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4784                            "from P2P peer table: %d MHz", freq);
4785         }
4786         if (wpa_s->p2p_join_ssid_len) {
4787                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4788                            MACSTR " and SSID %s",
4789                            MAC2STR(wpa_s->pending_join_iface_addr),
4790                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4791                                         wpa_s->p2p_join_ssid_len));
4792                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4793                                   wpa_s->p2p_join_ssid,
4794                                   wpa_s->p2p_join_ssid_len);
4795         } else if (!bss) {
4796                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4797                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4798                 bss = wpa_bss_get_bssid_latest(wpa_s,
4799                                                wpa_s->pending_join_iface_addr);
4800         }
4801         if (bss) {
4802                 u8 dev_addr[ETH_ALEN];
4803
4804                 freq = bss->freq;
4805                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4806                            "from BSS table: %d MHz (SSID %s)", freq,
4807                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4808                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4809                                        dev_addr) == 0 &&
4810                     os_memcmp(wpa_s->pending_join_dev_addr,
4811                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4812                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4813                               ETH_ALEN) != 0) {
4814                         wpa_printf(MSG_DEBUG,
4815                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4816                                    MAC2STR(dev_addr),
4817                                    MAC2STR(wpa_s->pending_join_dev_addr));
4818                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4819                                   ETH_ALEN);
4820                 }
4821         }
4822         if (freq > 0) {
4823                 u16 method;
4824
4825                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4826                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4827                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4828                                        "reason=FREQ_CONFLICT");
4829                         wpas_notify_p2p_group_formation_failure(
4830                                 wpa_s, "FREQ_CONFLICT");
4831                         return;
4832                 }
4833
4834                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4835                            "prior to joining an existing group (GO " MACSTR
4836                            " freq=%u MHz)",
4837                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4838                 wpa_s->pending_pd_before_join = 1;
4839
4840                 switch (wpa_s->pending_join_wps_method) {
4841                 case WPS_PIN_DISPLAY:
4842                         method = WPS_CONFIG_KEYPAD;
4843                         break;
4844                 case WPS_PIN_KEYPAD:
4845                         method = WPS_CONFIG_DISPLAY;
4846                         break;
4847                 case WPS_PBC:
4848                         method = WPS_CONFIG_PUSHBUTTON;
4849                         break;
4850                 case WPS_P2PS:
4851                         method = WPS_CONFIG_P2PS;
4852                         break;
4853                 default:
4854                         method = 0;
4855                         break;
4856                 }
4857
4858                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4859                                                wpa_s->pending_join_dev_addr) ==
4860                      method)) {
4861                         /*
4862                          * We have already performed provision discovery for
4863                          * joining the group. Proceed directly to join
4864                          * operation without duplicated provision discovery. */
4865                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4866                                    "with " MACSTR " already done - proceed to "
4867                                    "join",
4868                                    MAC2STR(wpa_s->pending_join_dev_addr));
4869                         wpa_s->pending_pd_before_join = 0;
4870                         goto start;
4871                 }
4872
4873                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4874                                       wpa_s->pending_join_dev_addr,
4875                                       NULL, method, 1,
4876                                       freq, wpa_s->user_initiated_pd) < 0) {
4877                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4878                                    "Discovery Request before joining an "
4879                                    "existing group");
4880                         wpa_s->pending_pd_before_join = 0;
4881                         goto start;
4882                 }
4883                 return;
4884         }
4885
4886         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4887         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4888         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4889         wpas_p2p_check_join_scan_limit(wpa_s);
4890         return;
4891
4892 start:
4893         /* Start join operation immediately */
4894         wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid,
4895                             wpa_s->p2p_join_ssid_len);
4896 }
4897
4898
4899 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4900                                    const u8 *ssid, size_t ssid_len)
4901 {
4902         int ret;
4903         struct wpa_driver_scan_params params;
4904         struct wpabuf *wps_ie, *ies;
4905         size_t ielen;
4906         int freqs[2] = { 0, 0 };
4907
4908         os_memset(&params, 0, sizeof(params));
4909
4910         /* P2P Wildcard SSID */
4911         params.num_ssids = 1;
4912         if (ssid && ssid_len) {
4913                 params.ssids[0].ssid = ssid;
4914                 params.ssids[0].ssid_len = ssid_len;
4915                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4916                 wpa_s->p2p_join_ssid_len = ssid_len;
4917         } else {
4918                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4919                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4920                 wpa_s->p2p_join_ssid_len = 0;
4921         }
4922
4923         wpa_s->wps->dev.p2p = 1;
4924         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4925                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4926                                         NULL);
4927         if (wps_ie == NULL) {
4928                 wpas_p2p_scan_res_join(wpa_s, NULL);
4929                 return;
4930         }
4931
4932         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4933         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4934         if (ies == NULL) {
4935                 wpabuf_free(wps_ie);
4936                 wpas_p2p_scan_res_join(wpa_s, NULL);
4937                 return;
4938         }
4939         wpabuf_put_buf(ies, wps_ie);
4940         wpabuf_free(wps_ie);
4941
4942         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4943
4944         params.p2p_probe = 1;
4945         params.extra_ies = wpabuf_head(ies);
4946         params.extra_ies_len = wpabuf_len(ies);
4947
4948         if (!freq) {
4949                 int oper_freq;
4950                 /*
4951                  * If freq is not provided, check the operating freq of the GO
4952                  * and use a single channel scan on if possible.
4953                  */
4954                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4955                                               wpa_s->pending_join_iface_addr);
4956                 if (oper_freq > 0)
4957                         freq = oper_freq;
4958         }
4959         if (freq > 0) {
4960                 freqs[0] = freq;
4961                 params.freqs = freqs;
4962         }
4963
4964         /*
4965          * Run a scan to update BSS table and start Provision Discovery once
4966          * the new scan results become available.
4967          */
4968         ret = wpa_drv_scan(wpa_s, &params);
4969         if (!ret) {
4970                 os_get_reltime(&wpa_s->scan_trigger_time);
4971                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4972                 wpa_s->own_scan_requested = 1;
4973         }
4974
4975         wpabuf_free(ies);
4976
4977         if (ret) {
4978                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4979                            "try again later");
4980                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4981                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4982                 wpas_p2p_check_join_scan_limit(wpa_s);
4983         }
4984 }
4985
4986
4987 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4988 {
4989         struct wpa_supplicant *wpa_s = eloop_ctx;
4990         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4991 }
4992
4993
4994 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4995                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4996                          int auto_join, int op_freq,
4997                          const u8 *ssid, size_t ssid_len)
4998 {
4999         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5000                    MACSTR " dev " MACSTR " op_freq=%d)%s",
5001                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5002                    auto_join ? " (auto_join)" : "");
5003         if (ssid && ssid_len) {
5004                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5005                            wpa_ssid_txt(ssid, ssid_len));
5006         }
5007
5008         wpa_s->p2p_auto_pd = 0;
5009         wpa_s->p2p_auto_join = !!auto_join;
5010         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5011         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5012         wpa_s->pending_join_wps_method = wps_method;
5013
5014         /* Make sure we are not running find during connection establishment */
5015         wpas_p2p_stop_find(wpa_s);
5016
5017         wpa_s->p2p_join_scan_count = 0;
5018         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5019         return 0;
5020 }
5021
5022
5023 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5024                                const u8 *ssid, size_t ssid_len)
5025 {
5026         struct wpa_supplicant *group;
5027         struct p2p_go_neg_results res;
5028         struct wpa_bss *bss;
5029
5030         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5031         if (group == NULL)
5032                 return -1;
5033         if (group != wpa_s) {
5034                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5035                           sizeof(group->p2p_pin));
5036                 group->p2p_wps_method = wpa_s->p2p_wps_method;
5037         } else {
5038                 /*
5039                  * Need to mark the current interface for p2p_group_formation
5040                  * when a separate group interface is not used. This is needed
5041                  * to allow p2p_cancel stop a pending p2p_connect-join.
5042                  * wpas_p2p_init_group_interface() addresses this for the case
5043                  * where a separate group interface is used.
5044                  */
5045                 wpa_s->global->p2p_group_formation = wpa_s;
5046         }
5047
5048         group->p2p_in_provisioning = 1;
5049         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5050
5051         os_memset(&res, 0, sizeof(res));
5052         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5053         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5054                   ETH_ALEN);
5055         res.wps_method = wpa_s->pending_join_wps_method;
5056         if (freq && ssid && ssid_len) {
5057                 res.freq = freq;
5058                 res.ssid_len = ssid_len;
5059                 os_memcpy(res.ssid, ssid, ssid_len);
5060         } else {
5061                 if (ssid && ssid_len) {
5062                         bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
5063                                           ssid, ssid_len);
5064                 } else {
5065                         bss = wpa_bss_get_bssid_latest(
5066                                 wpa_s, wpa_s->pending_join_iface_addr);
5067                 }
5068                 if (bss) {
5069                         res.freq = bss->freq;
5070                         res.ssid_len = bss->ssid_len;
5071                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5072                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5073                                    bss->freq,
5074                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
5075                 } else if (ssid && ssid_len) {
5076                         res.ssid_len = ssid_len;
5077                         os_memcpy(res.ssid, ssid, ssid_len);
5078                         wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)",
5079                                    wpa_ssid_txt(ssid, ssid_len));
5080                 }
5081         }
5082
5083         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5084                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5085                            "starting client");
5086                 wpa_drv_cancel_remain_on_channel(wpa_s);
5087                 wpa_s->off_channel_freq = 0;
5088                 wpa_s->roc_waiting_drv_freq = 0;
5089         }
5090         wpas_start_wps_enrollee(group, &res);
5091
5092         /*
5093          * Allow a longer timeout for join-a-running-group than normal 15
5094          * second group formation timeout since the GO may not have authorized
5095          * our connection yet.
5096          */
5097         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5098         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5099                                wpa_s, NULL);
5100
5101         return 0;
5102 }
5103
5104
5105 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5106                                 int *force_freq, int *pref_freq, int go,
5107                                 unsigned int *pref_freq_list,
5108                                 unsigned int *num_pref_freq)
5109 {
5110         struct wpa_used_freq_data *freqs;
5111         int res, best_freq, num_unused;
5112         unsigned int freq_in_use = 0, num, i, max_pref_freq;
5113
5114         max_pref_freq = *num_pref_freq;
5115         *num_pref_freq = 0;
5116
5117         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5118                           sizeof(struct wpa_used_freq_data));
5119         if (!freqs)
5120                 return -1;
5121
5122         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5123                                         wpa_s->num_multichan_concurrent);
5124
5125         /*
5126          * It is possible that the total number of used frequencies is bigger
5127          * than the number of frequencies used for P2P, so get the system wide
5128          * number of unused frequencies.
5129          */
5130         num_unused = wpas_p2p_num_unused_channels(wpa_s);
5131
5132         wpa_printf(MSG_DEBUG,
5133                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5134                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
5135
5136         if (freq > 0) {
5137                 int ret;
5138                 if (go)
5139                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5140                 else
5141                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5142                 if (!ret) {
5143                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5144                             ieee80211_is_dfs(freq)) {
5145                                 /*
5146                                  * If freq is a DFS channel and DFS is offloaded
5147                                  * to the driver, allow P2P GO to use it.
5148                                  */
5149                                 wpa_printf(MSG_DEBUG,
5150                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5151                                            freq);
5152                         } else {
5153                                 wpa_printf(MSG_DEBUG,
5154                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5155                                            freq);
5156                                 res = -3;
5157                                 goto exit_free;
5158                         }
5159                 }
5160
5161                 for (i = 0; i < num; i++) {
5162                         if (freqs[i].freq == freq)
5163                                 freq_in_use = 1;
5164                 }
5165
5166                 if (num_unused <= 0 && !freq_in_use) {
5167                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5168                                    freq);
5169                         res = -2;
5170                         goto exit_free;
5171                 }
5172                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5173                            "requested channel (%u MHz)", freq);
5174                 *force_freq = freq;
5175                 goto exit_ok;
5176         }
5177
5178         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5179
5180         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5181                 enum wpa_driver_if_type iface_type;
5182
5183                 if (go)
5184                         iface_type = WPA_IF_P2P_GO;
5185                 else
5186                         iface_type = WPA_IF_P2P_CLIENT;
5187
5188                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5189                            best_freq, go);
5190
5191                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5192                                                  &max_pref_freq,
5193                                                  pref_freq_list);
5194                 if (!res && max_pref_freq > 0) {
5195                         *num_pref_freq = max_pref_freq;
5196                         i = 0;
5197                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5198                                                         pref_freq_list[i]) &&
5199                                i < *num_pref_freq) {
5200                                 wpa_printf(MSG_DEBUG,
5201                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5202                                            i, pref_freq_list[i]);
5203                                 i++;
5204                         }
5205                         if (i != *num_pref_freq) {
5206                                 best_freq = pref_freq_list[i];
5207                                 wpa_printf(MSG_DEBUG,
5208                                            "P2P: Using preferred_freq_list[%d]=%d",
5209                                            i, best_freq);
5210                         } else {
5211                                 wpa_printf(MSG_DEBUG,
5212                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5213                                 *num_pref_freq = 0;
5214                         }
5215                 } else {
5216                         wpa_printf(MSG_DEBUG,
5217                                    "P2P: No preferred frequency list available");
5218                 }
5219         }
5220
5221         /* We have a candidate frequency to use */
5222         if (best_freq > 0) {
5223                 if (*pref_freq == 0 && num_unused > 0) {
5224                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5225                                    best_freq);
5226                         *pref_freq = best_freq;
5227                 } else {
5228                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5229                                    best_freq);
5230                         *force_freq = best_freq;
5231                 }
5232         } else if (num_unused > 0) {
5233                 wpa_printf(MSG_DEBUG,
5234                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5235                 *force_freq = 0;
5236         } else {
5237                 wpa_printf(MSG_DEBUG,
5238                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5239                 res = -2;
5240                 goto exit_free;
5241         }
5242
5243 exit_ok:
5244         res = 0;
5245 exit_free:
5246         os_free(freqs);
5247         return res;
5248 }
5249
5250
5251 /**
5252  * wpas_p2p_connect - Request P2P Group Formation to be started
5253  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5254  * @peer_addr: Address of the peer P2P Device
5255  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5256  * @persistent_group: Whether to create a persistent group
5257  * @auto_join: Whether to select join vs. GO Negotiation automatically
5258  * @join: Whether to join an existing group (as a client) instead of starting
5259  *      Group Owner negotiation; @peer_addr is BSSID in that case
5260  * @auth: Whether to only authorize the connection instead of doing that and
5261  *      initiating Group Owner negotiation
5262  * @go_intent: GO Intent or -1 to use default
5263  * @freq: Frequency for the group or 0 for auto-selection
5264  * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5265  * @persistent_id: Persistent group credentials to use for forcing GO
5266  *      parameters or -1 to generate new values (SSID/passphrase)
5267  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5268  *      interoperability workaround when initiating group formation
5269  * @ht40: Start GO with 40 MHz channel width
5270  * @vht:  Start GO with VHT support
5271  * @vht_chwidth: Channel width supported by GO operating with VHT support
5272  *      (VHT_CHANWIDTH_*).
5273  * @group_ssid: Specific Group SSID for join or %NULL if not set
5274  * @group_ssid_len: Length of @group_ssid in octets
5275  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5276  *      failure, -2 on failure due to channel not currently available,
5277  *      -3 if forced channel is not supported
5278  */
5279 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5280                      const char *pin, enum p2p_wps_method wps_method,
5281                      int persistent_group, int auto_join, int join, int auth,
5282                      int go_intent, int freq, unsigned int vht_center_freq2,
5283                      int persistent_id, int pd, int ht40, int vht,
5284                      unsigned int vht_chwidth, const u8 *group_ssid,
5285                      size_t group_ssid_len)
5286 {
5287         int force_freq = 0, pref_freq = 0;
5288         int ret = 0, res;
5289         enum wpa_driver_if_type iftype;
5290         const u8 *if_addr;
5291         struct wpa_ssid *ssid = NULL;
5292         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5293
5294         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5295                 return -1;
5296
5297         if (persistent_id >= 0) {
5298                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5299                 if (ssid == NULL || ssid->disabled != 2 ||
5300                     ssid->mode != WPAS_MODE_P2P_GO)
5301                         return -1;
5302         }
5303
5304         os_free(wpa_s->global->add_psk);
5305         wpa_s->global->add_psk = NULL;
5306
5307         wpa_s->global->p2p_fail_on_wps_complete = 0;
5308         wpa_s->global->pending_p2ps_group = 0;
5309         wpa_s->global->pending_p2ps_group_freq = 0;
5310         wpa_s->p2ps_method_config_any = 0;
5311
5312         if (go_intent < 0)
5313                 go_intent = wpa_s->conf->p2p_go_intent;
5314
5315         if (!auth)
5316                 wpa_s->p2p_long_listen = 0;
5317
5318         wpa_s->p2p_wps_method = wps_method;
5319         wpa_s->p2p_persistent_group = !!persistent_group;
5320         wpa_s->p2p_persistent_id = persistent_id;
5321         wpa_s->p2p_go_intent = go_intent;
5322         wpa_s->p2p_connect_freq = freq;
5323         wpa_s->p2p_fallback_to_go_neg = 0;
5324         wpa_s->p2p_pd_before_go_neg = !!pd;
5325         wpa_s->p2p_go_ht40 = !!ht40;
5326         wpa_s->p2p_go_vht = !!vht;
5327         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5328         wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5329
5330         if (pin)
5331                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5332         else if (wps_method == WPS_PIN_DISPLAY) {
5333                 if (wps_generate_pin((unsigned int *) &ret) < 0)
5334                         return -1;
5335                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5336                                   "%08d", ret);
5337                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5338                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5339                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5340                            wpa_s->p2p_pin);
5341         } else
5342                 wpa_s->p2p_pin[0] = '\0';
5343
5344         if (join || auto_join) {
5345                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5346                 if (auth) {
5347                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5348                                    "connect a running group from " MACSTR,
5349                                    MAC2STR(peer_addr));
5350                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5351                         return ret;
5352                 }
5353                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5354                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5355                                            iface_addr) < 0) {
5356                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5357                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5358                                          dev_addr);
5359                 }
5360                 if (auto_join) {
5361                         os_get_reltime(&wpa_s->p2p_auto_started);
5362                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5363                                    "%ld.%06ld",
5364                                    wpa_s->p2p_auto_started.sec,
5365                                    wpa_s->p2p_auto_started.usec);
5366                 }
5367                 wpa_s->user_initiated_pd = 1;
5368                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5369                                   auto_join, freq,
5370                                   group_ssid, group_ssid_len) < 0)
5371                         return -1;
5372                 return ret;
5373         }
5374
5375         size = P2P_MAX_PREF_CHANNELS;
5376         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5377                                    go_intent == 15, pref_freq_list, &size);
5378         if (res)
5379                 return res;
5380         wpas_p2p_set_own_freq_preference(wpa_s,
5381                                          force_freq ? force_freq : pref_freq);
5382
5383         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5384
5385         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5386
5387         if (wpa_s->create_p2p_iface) {
5388                 /* Prepare to add a new interface for the group */
5389                 iftype = WPA_IF_P2P_GROUP;
5390                 if (go_intent == 15)
5391                         iftype = WPA_IF_P2P_GO;
5392                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5393                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5394                                    "interface for the group");
5395                         return -1;
5396                 }
5397
5398                 if_addr = wpa_s->pending_interface_addr;
5399         } else {
5400                 if_addr = wpa_s->own_addr;
5401                 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5402         }
5403
5404         if (auth) {
5405                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5406                                          go_intent, if_addr,
5407                                          force_freq, persistent_group, ssid,
5408                                          pref_freq) < 0)
5409                         return -1;
5410                 return ret;
5411         }
5412
5413         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5414                                   go_intent, if_addr, force_freq,
5415                                   persistent_group, ssid, pref_freq) < 0) {
5416                 if (wpa_s->create_p2p_iface)
5417                         wpas_p2p_remove_pending_group_interface(wpa_s);
5418                 return -1;
5419         }
5420         return ret;
5421 }
5422
5423
5424 /**
5425  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5426  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5427  * @freq: Frequency of the channel in MHz
5428  * @duration: Duration of the stay on the channel in milliseconds
5429  *
5430  * This callback is called when the driver indicates that it has started the
5431  * requested remain-on-channel duration.
5432  */
5433 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5434                                    unsigned int freq, unsigned int duration)
5435 {
5436         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5437                 return;
5438         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)",
5439                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5440                    wpa_s->roc_waiting_drv_freq, freq, duration);
5441         if (wpa_s->off_channel_freq &&
5442             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5443                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5444                               wpa_s->pending_listen_duration);
5445                 wpa_s->pending_listen_freq = 0;
5446         } else {
5447                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5448                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5449                            freq, duration);
5450         }
5451 }
5452
5453
5454 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5455 {
5456         /* Limit maximum Listen state time based on driver limitation. */
5457         if (timeout > wpa_s->max_remain_on_chan)
5458                 timeout = wpa_s->max_remain_on_chan;
5459
5460         return p2p_listen(wpa_s->global->p2p, timeout);
5461 }
5462
5463
5464 /**
5465  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5466  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5467  * @freq: Frequency of the channel in MHz
5468  *
5469  * This callback is called when the driver indicates that a remain-on-channel
5470  * operation has been completed, i.e., the duration on the requested channel
5471  * has timed out.
5472  */
5473 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5474                                           unsigned int freq)
5475 {
5476         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5477                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5478                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5479         wpas_p2p_listen_work_done(wpa_s);
5480         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5481                 return;
5482         if (wpa_s->p2p_long_listen > 0)
5483                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5484         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5485                 return; /* P2P module started a new operation */
5486         if (offchannel_pending_action_tx(wpa_s))
5487                 return;
5488         if (wpa_s->p2p_long_listen > 0) {
5489                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5490                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5491         } else {
5492                 /*
5493                  * When listen duration is over, stop listen & update p2p_state
5494                  * to IDLE.
5495                  */
5496                 p2p_stop_listen(wpa_s->global->p2p);
5497         }
5498 }
5499
5500
5501 /**
5502  * wpas_p2p_group_remove - Remove a P2P group
5503  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5504  * @ifname: Network interface name of the group interface or "*" to remove all
5505  *      groups
5506  * Returns: 0 on success, -1 on failure
5507  *
5508  * This function is used to remove a P2P group. This can be used to disconnect
5509  * from a group in which the local end is a P2P Client or to end a P2P Group in
5510  * case the local end is the Group Owner. If a virtual network interface was
5511  * created for this group, that interface will be removed. Otherwise, only the
5512  * configured P2P group network will be removed from the interface.
5513  */
5514 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5515 {
5516         struct wpa_global *global = wpa_s->global;
5517         struct wpa_supplicant *calling_wpa_s = wpa_s;
5518
5519         if (os_strcmp(ifname, "*") == 0) {
5520                 struct wpa_supplicant *prev;
5521                 wpa_s = global->ifaces;
5522                 while (wpa_s) {
5523                         prev = wpa_s;
5524                         wpa_s = wpa_s->next;
5525                         if (prev->p2p_group_interface !=
5526                             NOT_P2P_GROUP_INTERFACE ||
5527                             (prev->current_ssid &&
5528                              prev->current_ssid->p2p_group))
5529                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5530                 }
5531                 return 0;
5532         }
5533
5534         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5535                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5536                         break;
5537         }
5538
5539         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5540 }
5541
5542
5543 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5544 {
5545         unsigned int r;
5546
5547         if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5548                 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5549                 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5550                 int res;
5551
5552                 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5553                                                  &size, pref_freq_list);
5554                 if (!res && size > 0) {
5555                         i = 0;
5556                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5557                                                         pref_freq_list[i]) &&
5558                                i < size) {
5559                                 wpa_printf(MSG_DEBUG,
5560                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5561                                            i, pref_freq_list[i]);
5562                                 i++;
5563                         }
5564                         if (i != size) {
5565                                 freq = pref_freq_list[i];
5566                                 wpa_printf(MSG_DEBUG,
5567                                            "P2P: Using preferred_freq_list[%d]=%d",
5568                                            i, freq);
5569                         } else {
5570                                 wpa_printf(MSG_DEBUG,
5571                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5572                         }
5573                 } else {
5574                         wpa_printf(MSG_DEBUG,
5575                                    "P2P: No preferred frequency list available");
5576                 }
5577         }
5578
5579         if (freq == 2) {
5580                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5581                            "band");
5582                 if (wpa_s->best_24_freq > 0 &&
5583                     p2p_supported_freq_go(wpa_s->global->p2p,
5584                                           wpa_s->best_24_freq)) {
5585                         freq = wpa_s->best_24_freq;
5586                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5587                                    "channel: %d MHz", freq);
5588                 } else {
5589                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5590                                 return -1;
5591                         freq = 2412 + (r % 3) * 25;
5592                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5593                                    "channel: %d MHz", freq);
5594                 }
5595         }
5596
5597         if (freq == 5) {
5598                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5599                            "band");
5600                 if (wpa_s->best_5_freq > 0 &&
5601                     p2p_supported_freq_go(wpa_s->global->p2p,
5602                                        wpa_s->best_5_freq)) {
5603                         freq = wpa_s->best_5_freq;
5604                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5605                                    "channel: %d MHz", freq);
5606                 } else {
5607                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5608                                 return -1;
5609                         freq = 5180 + (r % 4) * 20;
5610                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5611                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5612                                            "5 GHz channel for P2P group");
5613                                 return -1;
5614                         }
5615                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5616                                    "channel: %d MHz", freq);
5617                 }
5618         }
5619
5620         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5621                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5622                     ieee80211_is_dfs(freq)) {
5623                         /*
5624                          * If freq is a DFS channel and DFS is offloaded to the
5625                          * driver, allow P2P GO to use it.
5626                          */
5627                         wpa_printf(MSG_DEBUG, "P2P: "
5628                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5629                                    __func__, freq);
5630                         return freq;
5631                 }
5632                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5633                            "(%u MHz) is not supported for P2P uses",
5634                            freq);
5635                 return -1;
5636         }
5637
5638         return freq;
5639 }
5640
5641
5642 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5643                                       const struct p2p_channels *channels,
5644                                       int freq)
5645 {
5646         if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5647             p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5648             freq_included(wpa_s, channels, freq))
5649                 return 1;
5650         return 0;
5651 }
5652
5653
5654 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5655                                             struct p2p_go_neg_results *params,
5656                                             const struct p2p_channels *channels)
5657 {
5658         unsigned int i, r;
5659
5660         /* first try some random selection of the social channels */
5661         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5662                 return;
5663
5664         for (i = 0; i < 3; i++) {
5665                 params->freq = 2412 + ((r + i) % 3) * 25;
5666                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5667                         goto out;
5668         }
5669
5670         /* try all other channels in operating class 81 */
5671         for (i = 0; i < 11; i++) {
5672                 params->freq = 2412 + i * 5;
5673
5674                 /* skip social channels; covered in the previous loop */
5675                 if (params->freq == 2412 ||
5676                     params->freq == 2437 ||
5677                     params->freq == 2462)
5678                         continue;
5679
5680                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5681                         goto out;
5682         }
5683
5684         /* try all channels in operating class 115 */
5685         for (i = 0; i < 4; i++) {
5686                 params->freq = 5180 + i * 20;
5687                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5688                     freq_included(wpa_s, channels, params->freq) &&
5689                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5690                         goto out;
5691         }
5692
5693         /* try all channels in operating class 124 */
5694         for (i = 0; i < 4; i++) {
5695                 params->freq = 5745 + i * 20;
5696                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5697                     freq_included(wpa_s, channels, params->freq) &&
5698                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5699                         goto out;
5700         }
5701
5702         /* try social channel class 180 channel 2 */
5703         params->freq = 58320 + 1 * 2160;
5704         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5705             freq_included(wpa_s, channels, params->freq) &&
5706             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5707                 goto out;
5708
5709         /* try all channels in reg. class 180 */
5710         for (i = 0; i < 4; i++) {
5711                 params->freq = 58320 + i * 2160;
5712                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5713                     freq_included(wpa_s, channels, params->freq) &&
5714                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5715                         goto out;
5716         }
5717
5718         params->freq = 0;
5719         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5720         return;
5721 out:
5722         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5723                    params->freq);
5724 }
5725
5726
5727 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5728                                    struct p2p_go_neg_results *params,
5729                                    int freq, int vht_center_freq2, int ht40,
5730                                    int vht, int max_oper_chwidth,
5731                                    const struct p2p_channels *channels)
5732 {
5733         struct wpa_used_freq_data *freqs;
5734         unsigned int cand;
5735         unsigned int num, i;
5736         int ignore_no_freqs = 0;
5737
5738         os_memset(params, 0, sizeof(*params));
5739         params->role_go = 1;
5740         params->ht40 = ht40;
5741         params->vht = vht;
5742         params->max_oper_chwidth = max_oper_chwidth;
5743         params->vht_center_freq2 = vht_center_freq2;
5744
5745         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5746                           sizeof(struct wpa_used_freq_data));
5747         if (!freqs)
5748                 return -1;
5749
5750         num = get_shared_radio_freqs_data(wpa_s, freqs,
5751                                           wpa_s->num_multichan_concurrent);
5752
5753         if (wpa_s->current_ssid &&
5754             wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5755             wpa_s->wpa_state == WPA_COMPLETED) {
5756                 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5757                            __func__);
5758
5759                 /*
5760                  * If the frequency selection is done for an active P2P GO that
5761                  * is not sharing a frequency, allow to select a new frequency
5762                  * even if there are no unused frequencies as we are about to
5763                  * move the P2P GO so its frequency can be re-used.
5764                  */
5765                 for (i = 0; i < num; i++) {
5766                         if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5767                             freqs[i].flags == 0) {
5768                                 ignore_no_freqs = 1;
5769                                 break;
5770                         }
5771                 }
5772         }
5773
5774         /* try using the forced freq */
5775         if (freq) {
5776                 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) {
5777                         wpa_printf(MSG_DEBUG,
5778                                    "P2P: Forced GO freq %d MHz not accepted",
5779                                    freq);
5780                         goto fail;
5781                 }
5782
5783                 for (i = 0; i < num; i++) {
5784                         if (freqs[i].freq == freq) {
5785                                 wpa_printf(MSG_DEBUG,
5786                                            "P2P: forced freq (%d MHz) is also shared",
5787                                            freq);
5788                                 params->freq = freq;
5789                                 goto success;
5790                         }
5791                 }
5792
5793                 if (!ignore_no_freqs &&
5794                     wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5795                         wpa_printf(MSG_DEBUG,
5796                                    "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5797                                    freq);
5798                         goto fail;
5799                 }
5800
5801                 wpa_printf(MSG_DEBUG,
5802                            "P2P: force GO freq (%d MHz) on a free channel",
5803                            freq);
5804                 params->freq = freq;
5805                 goto success;
5806         }
5807
5808         /* consider using one of the shared frequencies */
5809         if (num) {
5810                 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5811                 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5812                         wpa_printf(MSG_DEBUG,
5813                                    "P2P: Use shared freq (%d MHz) for GO",
5814                                    freq);
5815                         params->freq = cand;
5816                         goto success;
5817                 }
5818
5819                 /* try using one of the shared freqs */
5820                 for (i = 0; i < num; i++) {
5821                         if (wpas_p2p_supported_freq_go(wpa_s, channels,
5822                                                        freqs[i].freq)) {
5823                                 wpa_printf(MSG_DEBUG,
5824                                            "P2P: Use shared freq (%d MHz) for GO",
5825                                            freq);
5826                                 params->freq = freqs[i].freq;
5827                                 goto success;
5828                         }
5829                 }
5830         }
5831
5832         if (!ignore_no_freqs &&
5833             wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5834                 wpa_printf(MSG_DEBUG,
5835                            "P2P: Cannot force GO on any of the channels we are already using");
5836                 goto fail;
5837         }
5838
5839         /* try using the setting from the configuration file */
5840         if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5841             wpa_s->conf->p2p_oper_channel >= 1 &&
5842             wpa_s->conf->p2p_oper_channel <= 11 &&
5843             wpas_p2p_supported_freq_go(
5844                     wpa_s, channels,
5845                     2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5846                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5847                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5848                            "frequency %d MHz", params->freq);
5849                 goto success;
5850         }
5851
5852         if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5853              wpa_s->conf->p2p_oper_reg_class == 116 ||
5854              wpa_s->conf->p2p_oper_reg_class == 117 ||
5855              wpa_s->conf->p2p_oper_reg_class == 124 ||
5856              wpa_s->conf->p2p_oper_reg_class == 125 ||
5857              wpa_s->conf->p2p_oper_reg_class == 126 ||
5858              wpa_s->conf->p2p_oper_reg_class == 127) &&
5859             wpas_p2p_supported_freq_go(wpa_s, channels,
5860                                        5000 +
5861                                        5 * wpa_s->conf->p2p_oper_channel)) {
5862                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5863                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5864                            "frequency %d MHz", params->freq);
5865                 goto success;
5866         }
5867
5868         /* Try using best channels */
5869         if (wpa_s->conf->p2p_oper_channel == 0 &&
5870             wpa_s->best_overall_freq > 0 &&
5871             wpas_p2p_supported_freq_go(wpa_s, channels,
5872                                        wpa_s->best_overall_freq)) {
5873                 params->freq = wpa_s->best_overall_freq;
5874                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5875                            "channel %d MHz", params->freq);
5876                 goto success;
5877         }
5878
5879         if (wpa_s->conf->p2p_oper_channel == 0 &&
5880             wpa_s->best_24_freq > 0 &&
5881             wpas_p2p_supported_freq_go(wpa_s, channels,
5882                                        wpa_s->best_24_freq)) {
5883                 params->freq = wpa_s->best_24_freq;
5884                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5885                            "channel %d MHz", params->freq);
5886                 goto success;
5887         }
5888
5889         if (wpa_s->conf->p2p_oper_channel == 0 &&
5890             wpa_s->best_5_freq > 0 &&
5891             wpas_p2p_supported_freq_go(wpa_s, channels,
5892                                        wpa_s->best_5_freq)) {
5893                 params->freq = wpa_s->best_5_freq;
5894                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5895                            "channel %d MHz", params->freq);
5896                 goto success;
5897         }
5898
5899         /* try using preferred channels */
5900         cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
5901         if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5902                 params->freq = cand;
5903                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5904                            "channels", params->freq);
5905                 goto success;
5906         }
5907
5908         /* Try using one of the group common freqs */
5909         if (wpa_s->p2p_group_common_freqs) {
5910                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
5911                         cand = wpa_s->p2p_group_common_freqs[i];
5912                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5913                                 params->freq = cand;
5914                                 wpa_printf(MSG_DEBUG,
5915                                            "P2P: Use freq %d MHz common with the peer",
5916                                            params->freq);
5917                                 goto success;
5918                         }
5919                 }
5920         }
5921
5922         /* no preference, select some channel */
5923         wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
5924
5925         if (params->freq == 0) {
5926                 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
5927                 goto fail;
5928         }
5929
5930 success:
5931         os_free(freqs);
5932         return 0;
5933 fail:
5934         os_free(freqs);
5935         return -1;
5936 }
5937
5938
5939 static struct wpa_supplicant *
5940 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5941                          int go)
5942 {
5943         struct wpa_supplicant *group_wpa_s;
5944
5945         if (!wpas_p2p_create_iface(wpa_s)) {
5946                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5947                         "operations");
5948                 wpa_s->p2p_first_connection_timeout = 0;
5949                 return wpa_s;
5950         }
5951
5952         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5953                                          WPA_IF_P2P_CLIENT) < 0) {
5954                 wpa_msg_global(wpa_s, MSG_ERROR,
5955                                "P2P: Failed to add group interface");
5956                 return NULL;
5957         }
5958         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5959         if (group_wpa_s == NULL) {
5960                 wpa_msg_global(wpa_s, MSG_ERROR,
5961                                "P2P: Failed to initialize group interface");
5962                 wpas_p2p_remove_pending_group_interface(wpa_s);
5963                 return NULL;
5964         }
5965
5966         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5967                 group_wpa_s->ifname);
5968         group_wpa_s->p2p_first_connection_timeout = 0;
5969         return group_wpa_s;
5970 }
5971
5972
5973 /**
5974  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5975  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5976  * @persistent_group: Whether to create a persistent group
5977  * @freq: Frequency for the group or 0 to indicate no hardcoding
5978  * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80
5979  * @ht40: Start GO with 40 MHz channel width
5980  * @vht:  Start GO with VHT support
5981  * @vht_chwidth: channel bandwidth for GO operating with VHT support
5982  * Returns: 0 on success, -1 on failure
5983  *
5984  * This function creates a new P2P group with the local end as the Group Owner,
5985  * i.e., without using Group Owner Negotiation.
5986  */
5987 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5988                        int freq, int vht_center_freq2, int ht40, int vht,
5989                        int max_oper_chwidth)
5990 {
5991         struct p2p_go_neg_results params;
5992
5993         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5994                 return -1;
5995
5996         os_free(wpa_s->global->add_psk);
5997         wpa_s->global->add_psk = NULL;
5998
5999         /* Make sure we are not running find during connection establishment */
6000         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6001         wpas_p2p_stop_find_oper(wpa_s);
6002
6003         freq = wpas_p2p_select_go_freq(wpa_s, freq);
6004         if (freq < 0)
6005                 return -1;
6006
6007         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6008                                     ht40, vht, max_oper_chwidth, NULL))
6009                 return -1;
6010         if (params.freq &&
6011             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
6012                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
6013                     ieee80211_is_dfs(params.freq)) {
6014                         /*
6015                          * If freq is a DFS channel and DFS is offloaded to the
6016                          * driver, allow P2P GO to use it.
6017                          */
6018                         wpa_printf(MSG_DEBUG,
6019                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
6020                                 __func__, params.freq);
6021                 } else {
6022                         wpa_printf(MSG_DEBUG,
6023                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
6024                                    params.freq);
6025                         return -1;
6026                 }
6027         }
6028         p2p_go_params(wpa_s->global->p2p, &params);
6029         params.persistent_group = persistent_group;
6030
6031         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6032         if (wpa_s == NULL)
6033                 return -1;
6034         wpas_start_wps_go(wpa_s, &params, 0);
6035
6036         return 0;
6037 }
6038
6039
6040 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6041                                  struct wpa_ssid *params, int addr_allocated,
6042                                  int freq, int force_scan)
6043 {
6044         struct wpa_ssid *ssid;
6045
6046         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6047         if (wpa_s == NULL)
6048                 return -1;
6049         if (force_scan)
6050                 os_get_reltime(&wpa_s->scan_min_time);
6051         wpa_s->p2p_last_4way_hs_fail = NULL;
6052
6053         wpa_supplicant_ap_deinit(wpa_s);
6054
6055         ssid = wpa_config_add_network(wpa_s->conf);
6056         if (ssid == NULL)
6057                 return -1;
6058         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
6059         wpa_config_set_network_defaults(ssid);
6060         ssid->temporary = 1;
6061         ssid->proto = WPA_PROTO_RSN;
6062         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
6063         ssid->group_cipher = WPA_CIPHER_CCMP;
6064         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6065         ssid->ssid = os_malloc(params->ssid_len);
6066         if (ssid->ssid == NULL) {
6067                 wpa_config_remove_network(wpa_s->conf, ssid->id);
6068                 return -1;
6069         }
6070         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6071         ssid->ssid_len = params->ssid_len;
6072         ssid->p2p_group = 1;
6073         ssid->export_keys = 1;
6074         if (params->psk_set) {
6075                 os_memcpy(ssid->psk, params->psk, 32);
6076                 ssid->psk_set = 1;
6077         }
6078         if (params->passphrase)
6079                 ssid->passphrase = os_strdup(params->passphrase);
6080
6081         wpa_s->show_group_started = 1;
6082         wpa_s->p2p_in_invitation = 1;
6083         wpa_s->p2p_invite_go_freq = freq;
6084         wpa_s->p2p_go_group_formation_completed = 0;
6085         wpa_s->global->p2p_group_formation = wpa_s;
6086
6087         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6088                              NULL);
6089         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6090                                wpas_p2p_group_formation_timeout,
6091                                wpa_s->parent, NULL);
6092         wpa_supplicant_select_network(wpa_s, ssid);
6093
6094         return 0;
6095 }
6096
6097
6098 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6099                                   struct wpa_ssid *ssid, int addr_allocated,
6100                                   int force_freq, int neg_freq,
6101                                   int vht_center_freq2, int ht40,
6102                                   int vht, int max_oper_chwidth,
6103                                   const struct p2p_channels *channels,
6104                                   int connection_timeout, int force_scan)
6105 {
6106         struct p2p_go_neg_results params;
6107         int go = 0, freq;
6108
6109         if (ssid->disabled != 2 || ssid->ssid == NULL)
6110                 return -1;
6111
6112         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6113             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6114                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6115                            "already running");
6116                 if (go == 0 &&
6117                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6118                                          wpa_s->parent, NULL)) {
6119                         /*
6120                          * This can happen if Invitation Response frame was lost
6121                          * and the peer (GO of a persistent group) tries to
6122                          * invite us again. Reschedule the timeout to avoid
6123                          * terminating the wait for the connection too early
6124                          * since we now know that the peer is still trying to
6125                          * invite us instead of having already started the GO.
6126                          */
6127                         wpa_printf(MSG_DEBUG,
6128                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6129                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6130                                                wpas_p2p_group_formation_timeout,
6131                                                wpa_s->parent, NULL);
6132                 }
6133                 return 0;
6134         }
6135
6136         os_free(wpa_s->global->add_psk);
6137         wpa_s->global->add_psk = NULL;
6138
6139         /* Make sure we are not running find during connection establishment */
6140         wpas_p2p_stop_find_oper(wpa_s);
6141
6142         wpa_s->p2p_fallback_to_go_neg = 0;
6143
6144         if (ssid->mode == WPAS_MODE_P2P_GO) {
6145                 if (force_freq > 0) {
6146                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6147                         if (freq < 0)
6148                                 return -1;
6149                 } else {
6150                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6151                         if (freq < 0 ||
6152                             (freq > 0 && !freq_included(wpa_s, channels, freq)))
6153                                 freq = 0;
6154                 }
6155         } else if (ssid->mode == WPAS_MODE_INFRA) {
6156                 freq = neg_freq;
6157                 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6158                         struct os_reltime now;
6159                         struct wpa_bss *bss =
6160                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6161
6162                         os_get_reltime(&now);
6163                         if (bss &&
6164                             !os_reltime_expired(&now, &bss->last_update, 5) &&
6165                             freq_included(wpa_s, channels, bss->freq))
6166                                 freq = bss->freq;
6167                         else
6168                                 freq = 0;
6169                 }
6170
6171                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6172                                              force_scan);
6173         } else {
6174                 return -1;
6175         }
6176
6177         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6178                                     ht40, vht, max_oper_chwidth, channels))
6179                 return -1;
6180
6181         params.role_go = 1;
6182         params.psk_set = ssid->psk_set;
6183         if (params.psk_set)
6184                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6185         if (ssid->passphrase) {
6186                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6187                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6188                                    "persistent group");
6189                         return -1;
6190                 }
6191                 os_strlcpy(params.passphrase, ssid->passphrase,
6192                            sizeof(params.passphrase));
6193         }
6194         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6195         params.ssid_len = ssid->ssid_len;
6196         params.persistent_group = 1;
6197
6198         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6199         if (wpa_s == NULL)
6200                 return -1;
6201
6202         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6203
6204         wpa_s->p2p_first_connection_timeout = connection_timeout;
6205         wpas_start_wps_go(wpa_s, &params, 0);
6206
6207         return 0;
6208 }
6209
6210
6211 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6212                                struct wpabuf *proberesp_ies)
6213 {
6214         struct wpa_supplicant *wpa_s = ctx;
6215         if (wpa_s->ap_iface) {
6216                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6217                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6218                         wpabuf_free(beacon_ies);
6219                         wpabuf_free(proberesp_ies);
6220                         return;
6221                 }
6222                 if (beacon_ies) {
6223                         wpabuf_free(hapd->p2p_beacon_ie);
6224                         hapd->p2p_beacon_ie = beacon_ies;
6225                 }
6226                 wpabuf_free(hapd->p2p_probe_resp_ie);
6227                 hapd->p2p_probe_resp_ie = proberesp_ies;
6228         } else {
6229                 wpabuf_free(beacon_ies);
6230                 wpabuf_free(proberesp_ies);
6231         }
6232         wpa_supplicant_ap_update_beacon(wpa_s);
6233 }
6234
6235
6236 static void wpas_p2p_idle_update(void *ctx, int idle)
6237 {
6238         struct wpa_supplicant *wpa_s = ctx;
6239         if (!wpa_s->ap_iface)
6240                 return;
6241         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6242         if (idle) {
6243                 if (wpa_s->global->p2p_fail_on_wps_complete &&
6244                     wpa_s->p2p_in_provisioning) {
6245                         wpas_p2p_grpform_fail_after_wps(wpa_s);
6246                         return;
6247                 }
6248                 wpas_p2p_set_group_idle_timeout(wpa_s);
6249         } else
6250                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6251 }
6252
6253
6254 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6255                                        struct wpa_ssid *ssid)
6256 {
6257         struct p2p_group *group;
6258         struct p2p_group_config *cfg;
6259
6260         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6261                 return NULL;
6262
6263         cfg = os_zalloc(sizeof(*cfg));
6264         if (cfg == NULL)
6265                 return NULL;
6266
6267         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6268                 cfg->persistent_group = 2;
6269         else if (ssid->p2p_persistent_group)
6270                 cfg->persistent_group = 1;
6271         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6272         if (wpa_s->max_stations &&
6273             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6274                 cfg->max_clients = wpa_s->max_stations;
6275         else
6276                 cfg->max_clients = wpa_s->conf->max_num_sta;
6277         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6278         cfg->ssid_len = ssid->ssid_len;
6279         cfg->freq = ssid->frequency;
6280         cfg->cb_ctx = wpa_s;
6281         cfg->ie_update = wpas_p2p_ie_update;
6282         cfg->idle_update = wpas_p2p_idle_update;
6283
6284         group = p2p_group_init(wpa_s->global->p2p, cfg);
6285         if (group == NULL)
6286                 os_free(cfg);
6287         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6288                 p2p_group_notif_formation_done(group);
6289         wpa_s->p2p_group = group;
6290         return group;
6291 }
6292
6293
6294 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6295                           int registrar)
6296 {
6297         struct wpa_ssid *ssid = wpa_s->current_ssid;
6298
6299         if (!wpa_s->p2p_in_provisioning) {
6300                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6301                            "provisioning not in progress");
6302                 return;
6303         }
6304
6305         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6306                 u8 go_dev_addr[ETH_ALEN];
6307                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6308                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6309                                           ssid->ssid_len);
6310                 /* Clear any stored provisioning info */
6311                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6312         }
6313
6314         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6315                              NULL);
6316         wpa_s->p2p_go_group_formation_completed = 1;
6317         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6318                 /*
6319                  * Use a separate timeout for initial data connection to
6320                  * complete to allow the group to be removed automatically if
6321                  * something goes wrong in this step before the P2P group idle
6322                  * timeout mechanism is taken into use.
6323                  */
6324                 wpa_dbg(wpa_s, MSG_DEBUG,
6325                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6326                         P2P_MAX_INITIAL_CONN_WAIT);
6327                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6328                                        wpas_p2p_group_formation_timeout,
6329                                        wpa_s->parent, NULL);
6330                 /* Complete group formation on successful data connection. */
6331                 wpa_s->p2p_go_group_formation_completed = 0;
6332         } else if (ssid) {
6333                 /*
6334                  * Use a separate timeout for initial data connection to
6335                  * complete to allow the group to be removed automatically if
6336                  * the client does not complete data connection successfully.
6337                  */
6338                 wpa_dbg(wpa_s, MSG_DEBUG,
6339                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6340                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6341                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6342                                        wpas_p2p_group_formation_timeout,
6343                                        wpa_s->parent, NULL);
6344                 /*
6345                  * Complete group formation on first successful data connection
6346                  */
6347                 wpa_s->p2p_go_group_formation_completed = 0;
6348         }
6349         if (wpa_s->global->p2p)
6350                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6351         wpas_group_formation_completed(wpa_s, 1, 0);
6352 }
6353
6354
6355 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6356                          struct wps_event_fail *fail)
6357 {
6358         if (!wpa_s->p2p_in_provisioning) {
6359                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6360                            "provisioning not in progress");
6361                 return;
6362         }
6363
6364         if (wpa_s->go_params) {
6365                 p2p_clear_provisioning_info(
6366                         wpa_s->global->p2p,
6367                         wpa_s->go_params->peer_device_addr);
6368         }
6369
6370         wpas_notify_p2p_wps_failed(wpa_s, fail);
6371
6372         if (wpa_s == wpa_s->global->p2p_group_formation) {
6373                 /*
6374                  * Allow some time for the failed WPS negotiation exchange to
6375                  * complete, but remove the group since group formation cannot
6376                  * succeed after provisioning failure.
6377                  */
6378                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6379                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6380                 eloop_deplete_timeout(0, 50000,
6381                                       wpas_p2p_group_formation_timeout,
6382                                       wpa_s->parent, NULL);
6383         }
6384 }
6385
6386
6387 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6388 {
6389         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6390             !wpa_s->p2p_in_provisioning)
6391                 return 0;
6392
6393         wpas_p2p_grpform_fail_after_wps(wpa_s);
6394
6395         return 1;
6396 }
6397
6398
6399 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6400                        const char *config_method,
6401                        enum wpas_p2p_prov_disc_use use,
6402                        struct p2ps_provision *p2ps_prov)
6403 {
6404         u16 config_methods;
6405
6406         wpa_s->global->pending_p2ps_group = 0;
6407         wpa_s->global->pending_p2ps_group_freq = 0;
6408         wpa_s->p2p_fallback_to_go_neg = 0;
6409         wpa_s->pending_pd_use = NORMAL_PD;
6410         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6411                 p2ps_prov->conncap = p2ps_group_capability(
6412                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6413                         &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6414
6415                 wpa_printf(MSG_DEBUG,
6416                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6417                            __func__, p2ps_prov->conncap,
6418                            p2ps_prov->adv_id, p2ps_prov->conncap,
6419                            p2ps_prov->status, p2ps_prov->info);
6420
6421                 config_methods = 0;
6422         } else if (os_strncmp(config_method, "display", 7) == 0)
6423                 config_methods = WPS_CONFIG_DISPLAY;
6424         else if (os_strncmp(config_method, "keypad", 6) == 0)
6425                 config_methods = WPS_CONFIG_KEYPAD;
6426         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6427                  os_strncmp(config_method, "pushbutton", 10) == 0)
6428                 config_methods = WPS_CONFIG_PUSHBUTTON;
6429         else {
6430                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6431                 os_free(p2ps_prov);
6432                 return -1;
6433         }
6434
6435         if (use == WPAS_P2P_PD_AUTO) {
6436                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6437                 wpa_s->pending_pd_config_methods = config_methods;
6438                 wpa_s->p2p_auto_pd = 1;
6439                 wpa_s->p2p_auto_join = 0;
6440                 wpa_s->pending_pd_before_join = 0;
6441                 wpa_s->auto_pd_scan_retry = 0;
6442                 wpas_p2p_stop_find(wpa_s);
6443                 wpa_s->p2p_join_scan_count = 0;
6444                 os_get_reltime(&wpa_s->p2p_auto_started);
6445                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6446                            wpa_s->p2p_auto_started.sec,
6447                            wpa_s->p2p_auto_started.usec);
6448                 wpas_p2p_join_scan(wpa_s, NULL);
6449                 return 0;
6450         }
6451
6452         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6453                 os_free(p2ps_prov);
6454                 return -1;
6455         }
6456
6457         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6458                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6459                                  0, 1);
6460 }
6461
6462
6463 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6464                               char *end)
6465 {
6466         return p2p_scan_result_text(ies, ies_len, buf, end);
6467 }
6468
6469
6470 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6471 {
6472         if (!offchannel_pending_action_tx(wpa_s))
6473                 return;
6474
6475         if (wpa_s->p2p_send_action_work) {
6476                 wpas_p2p_free_send_action_work(wpa_s);
6477                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
6478                                      wpa_s, NULL);
6479                 offchannel_send_action_done(wpa_s);
6480         }
6481
6482         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6483                    "operation request");
6484         offchannel_clear_pending_action_tx(wpa_s);
6485 }
6486
6487
6488 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6489                   enum p2p_discovery_type type,
6490                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6491                   const u8 *dev_id, unsigned int search_delay,
6492                   u8 seek_cnt, const char **seek_string, int freq)
6493 {
6494         wpas_p2p_clear_pending_action_tx(wpa_s);
6495         wpa_s->p2p_long_listen = 0;
6496
6497         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6498             wpa_s->p2p_in_provisioning)
6499                 return -1;
6500
6501         wpa_supplicant_cancel_sched_scan(wpa_s);
6502
6503         return p2p_find(wpa_s->global->p2p, timeout, type,
6504                         num_req_dev_types, req_dev_types, dev_id,
6505                         search_delay, seek_cnt, seek_string, freq);
6506 }
6507
6508
6509 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6510                                             struct wpa_scan_results *scan_res)
6511 {
6512         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6513
6514         if (wpa_s->p2p_scan_work) {
6515                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6516                 wpa_s->p2p_scan_work = NULL;
6517                 radio_work_done(work);
6518         }
6519
6520         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6521                 return;
6522
6523         /*
6524          * Indicate that results have been processed so that the P2P module can
6525          * continue pending tasks.
6526          */
6527         p2p_scan_res_handled(wpa_s->global->p2p);
6528 }
6529
6530
6531 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6532 {
6533         wpas_p2p_clear_pending_action_tx(wpa_s);
6534         wpa_s->p2p_long_listen = 0;
6535         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6536         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6537
6538         if (wpa_s->global->p2p)
6539                 p2p_stop_find(wpa_s->global->p2p);
6540
6541         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6542                 wpa_printf(MSG_DEBUG,
6543                            "P2P: Do not consider the scan results after stop_find");
6544                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6545         }
6546 }
6547
6548
6549 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6550 {
6551         wpas_p2p_stop_find_oper(wpa_s);
6552         if (!wpa_s->global->pending_group_iface_for_p2ps)
6553                 wpas_p2p_remove_pending_group_interface(wpa_s);
6554 }
6555
6556
6557 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6558 {
6559         struct wpa_supplicant *wpa_s = eloop_ctx;
6560         wpa_s->p2p_long_listen = 0;
6561 }
6562
6563
6564 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6565 {
6566         int res;
6567
6568         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6569                 return -1;
6570
6571         wpa_supplicant_cancel_sched_scan(wpa_s);
6572         wpas_p2p_clear_pending_action_tx(wpa_s);
6573
6574         if (timeout == 0) {
6575                 /*
6576                  * This is a request for unlimited Listen state. However, at
6577                  * least for now, this is mapped to a Listen state for one
6578                  * hour.
6579                  */
6580                 timeout = 3600;
6581         }
6582         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6583         wpa_s->p2p_long_listen = 0;
6584
6585         /*
6586          * Stop previous find/listen operation to avoid trying to request a new
6587          * remain-on-channel operation while the driver is still running the
6588          * previous one.
6589          */
6590         if (wpa_s->global->p2p)
6591                 p2p_stop_find(wpa_s->global->p2p);
6592
6593         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6594         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6595                 wpa_s->p2p_long_listen = timeout * 1000;
6596                 eloop_register_timeout(timeout, 0,
6597                                        wpas_p2p_long_listen_timeout,
6598                                        wpa_s, NULL);
6599         }
6600
6601         return res;
6602 }
6603
6604
6605 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6606                           u8 *buf, size_t len, int p2p_group)
6607 {
6608         struct wpabuf *p2p_ie;
6609         int ret;
6610
6611         if (wpa_s->global->p2p_disabled)
6612                 return -1;
6613         /*
6614          * Advertize mandatory cross connection capability even on
6615          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6616          */
6617         if (wpa_s->conf->p2p_disabled && p2p_group)
6618                 return -1;
6619         if (wpa_s->global->p2p == NULL)
6620                 return -1;
6621         if (bss == NULL)
6622                 return -1;
6623
6624         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6625         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6626                                p2p_group, p2p_ie);
6627         wpabuf_free(p2p_ie);
6628
6629         return ret;
6630 }
6631
6632
6633 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6634                           const u8 *dst, const u8 *bssid,
6635                           const u8 *ie, size_t ie_len,
6636                           unsigned int rx_freq, int ssi_signal)
6637 {
6638         if (wpa_s->global->p2p_disabled)
6639                 return 0;
6640         if (wpa_s->global->p2p == NULL)
6641                 return 0;
6642
6643         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6644                                  ie, ie_len, rx_freq)) {
6645         case P2P_PREQ_NOT_P2P:
6646                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6647                                  ssi_signal);
6648                 /* fall through */
6649         case P2P_PREQ_MALFORMED:
6650         case P2P_PREQ_NOT_LISTEN:
6651         case P2P_PREQ_NOT_PROCESSED:
6652         default: /* make gcc happy */
6653                 return 0;
6654         case P2P_PREQ_PROCESSED:
6655                 return 1;
6656         }
6657 }
6658
6659
6660 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6661                         const u8 *sa, const u8 *bssid,
6662                         u8 category, const u8 *data, size_t len, int freq)
6663 {
6664         if (wpa_s->global->p2p_disabled)
6665                 return;
6666         if (wpa_s->global->p2p == NULL)
6667                 return;
6668
6669         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6670                       freq);
6671 }
6672
6673
6674 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6675 {
6676         if (wpa_s->global->p2p_disabled)
6677                 return;
6678         if (wpa_s->global->p2p == NULL)
6679                 return;
6680
6681         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6682 }
6683
6684
6685 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6686 {
6687         p2p_group_deinit(wpa_s->p2p_group);
6688         wpa_s->p2p_group = NULL;
6689
6690         wpa_s->ap_configured_cb = NULL;
6691         wpa_s->ap_configured_cb_ctx = NULL;
6692         wpa_s->ap_configured_cb_data = NULL;
6693         wpa_s->connect_without_scan = NULL;
6694 }
6695
6696
6697 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6698 {
6699         wpa_s->p2p_long_listen = 0;
6700
6701         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6702                 return -1;
6703
6704         return p2p_reject(wpa_s->global->p2p, addr);
6705 }
6706
6707
6708 /* Invite to reinvoke a persistent group */
6709 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6710                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6711                     int vht_center_freq2, int ht40, int vht, int max_chwidth,
6712                     int pref_freq)
6713 {
6714         enum p2p_invite_role role;
6715         u8 *bssid = NULL;
6716         int force_freq = 0;
6717         int res;
6718         int no_pref_freq_given = pref_freq == 0;
6719         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6720
6721         wpa_s->global->p2p_invite_group = NULL;
6722         if (peer_addr)
6723                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6724         else
6725                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6726
6727         wpa_s->p2p_persistent_go_freq = freq;
6728         wpa_s->p2p_go_ht40 = !!ht40;
6729         wpa_s->p2p_go_vht = !!vht;
6730         wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
6731         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
6732         if (ssid->mode == WPAS_MODE_P2P_GO) {
6733                 role = P2P_INVITE_ROLE_GO;
6734                 if (peer_addr == NULL) {
6735                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6736                                    "address in invitation command");
6737                         return -1;
6738                 }
6739                 if (wpas_p2p_create_iface(wpa_s)) {
6740                         if (wpas_p2p_add_group_interface(wpa_s,
6741                                                          WPA_IF_P2P_GO) < 0) {
6742                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6743                                            "allocate a new interface for the "
6744                                            "group");
6745                                 return -1;
6746                         }
6747                         bssid = wpa_s->pending_interface_addr;
6748                 } else
6749                         bssid = wpa_s->own_addr;
6750         } else {
6751                 role = P2P_INVITE_ROLE_CLIENT;
6752                 peer_addr = ssid->bssid;
6753         }
6754         wpa_s->pending_invite_ssid_id = ssid->id;
6755
6756         size = P2P_MAX_PREF_CHANNELS;
6757         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6758                                    role == P2P_INVITE_ROLE_GO,
6759                                    pref_freq_list, &size);
6760         if (res)
6761                 return res;
6762
6763         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6764                 return -1;
6765
6766         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6767
6768         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6769             no_pref_freq_given && pref_freq > 0 &&
6770             wpa_s->num_multichan_concurrent > 1 &&
6771             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6772                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6773                            pref_freq);
6774                 pref_freq = 0;
6775         }
6776
6777         /*
6778          * Stop any find/listen operations before invitation and possibly
6779          * connection establishment.
6780          */
6781         wpas_p2p_stop_find_oper(wpa_s);
6782
6783         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6784                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6785                           1, pref_freq, -1);
6786 }
6787
6788
6789 /* Invite to join an active group */
6790 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6791                           const u8 *peer_addr, const u8 *go_dev_addr)
6792 {
6793         struct wpa_global *global = wpa_s->global;
6794         enum p2p_invite_role role;
6795         u8 *bssid = NULL;
6796         struct wpa_ssid *ssid;
6797         int persistent;
6798         int freq = 0, force_freq = 0, pref_freq = 0;
6799         int res;
6800         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6801
6802         wpa_s->p2p_persistent_go_freq = 0;
6803         wpa_s->p2p_go_ht40 = 0;
6804         wpa_s->p2p_go_vht = 0;
6805         wpa_s->p2p_go_vht_center_freq2 = 0;
6806         wpa_s->p2p_go_max_oper_chwidth = 0;
6807
6808         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6809                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6810                         break;
6811         }
6812         if (wpa_s == NULL) {
6813                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6814                 return -1;
6815         }
6816
6817         ssid = wpa_s->current_ssid;
6818         if (ssid == NULL) {
6819                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6820                            "invitation");
6821                 return -1;
6822         }
6823
6824         wpa_s->global->p2p_invite_group = wpa_s;
6825         persistent = ssid->p2p_persistent_group &&
6826                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6827                                         ssid->ssid, ssid->ssid_len);
6828
6829         if (ssid->mode == WPAS_MODE_P2P_GO) {
6830                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6831                 bssid = wpa_s->own_addr;
6832                 if (go_dev_addr == NULL)
6833                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6834                 freq = ssid->frequency;
6835         } else {
6836                 role = P2P_INVITE_ROLE_CLIENT;
6837                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6838                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6839                                    "invite to current group");
6840                         return -1;
6841                 }
6842                 bssid = wpa_s->bssid;
6843                 if (go_dev_addr == NULL &&
6844                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6845                         go_dev_addr = wpa_s->go_dev_addr;
6846                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6847                         (int) wpa_s->assoc_freq;
6848         }
6849         wpa_s->parent->pending_invite_ssid_id = -1;
6850
6851         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6852                 return -1;
6853
6854         size = P2P_MAX_PREF_CHANNELS;
6855         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6856                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
6857                                    pref_freq_list, &size);
6858         if (res)
6859                 return res;
6860         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6861
6862         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6863                           ssid->ssid, ssid->ssid_len, force_freq,
6864                           go_dev_addr, persistent, pref_freq, -1);
6865 }
6866
6867
6868 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6869 {
6870         struct wpa_ssid *ssid = wpa_s->current_ssid;
6871         u8 go_dev_addr[ETH_ALEN];
6872         int network_id = -1;
6873         int persistent;
6874         int freq;
6875         u8 ip[3 * 4];
6876         char ip_addr[100];
6877
6878         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6879                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6880                                      wpa_s->parent, NULL);
6881         }
6882
6883         if (!wpa_s->show_group_started || !ssid)
6884                 return;
6885
6886         wpa_s->show_group_started = 0;
6887         if (!wpa_s->p2p_go_group_formation_completed &&
6888             wpa_s->global->p2p_group_formation == wpa_s) {
6889                 wpa_dbg(wpa_s, MSG_DEBUG,
6890                         "P2P: Marking group formation completed on client on data connection");
6891                 wpa_s->p2p_go_group_formation_completed = 1;
6892                 wpa_s->global->p2p_group_formation = NULL;
6893                 wpa_s->p2p_in_provisioning = 0;
6894                 wpa_s->p2p_in_invitation = 0;
6895         }
6896
6897         os_memset(go_dev_addr, 0, ETH_ALEN);
6898         if (ssid->bssid_set)
6899                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6900         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6901                                                ssid->ssid_len);
6902         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6903
6904         if (wpa_s->global->p2p_group_formation == wpa_s)
6905                 wpa_s->global->p2p_group_formation = NULL;
6906
6907         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6908                 (int) wpa_s->assoc_freq;
6909
6910         ip_addr[0] = '\0';
6911         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6912                 int res;
6913
6914                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6915                                   " ip_addr=%u.%u.%u.%u "
6916                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6917                                   ip[0], ip[1], ip[2], ip[3],
6918                                   ip[4], ip[5], ip[6], ip[7],
6919                                   ip[8], ip[9], ip[10], ip[11]);
6920                 if (os_snprintf_error(sizeof(ip_addr), res))
6921                         ip_addr[0] = '\0';
6922         }
6923
6924         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6925                                ssid->passphrase == NULL && ssid->psk_set ?
6926                                ssid->psk : NULL,
6927                                ssid->passphrase, go_dev_addr, persistent,
6928                                ip_addr);
6929
6930         if (persistent)
6931                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6932                                                              ssid, go_dev_addr);
6933         if (network_id < 0)
6934                 network_id = ssid->id;
6935         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6936 }
6937
6938
6939 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6940                           u32 interval1, u32 duration2, u32 interval2)
6941 {
6942         int ret;
6943
6944         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6945                 return -1;
6946
6947         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6948             wpa_s->current_ssid == NULL ||
6949             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6950                 return -1;
6951
6952         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6953                                wpa_s->own_addr, wpa_s->assoc_freq,
6954                                duration1, interval1, duration2, interval2);
6955         if (ret == 0)
6956                 wpa_s->waiting_presence_resp = 1;
6957
6958         return ret;
6959 }
6960
6961
6962 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6963                         unsigned int interval)
6964 {
6965         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6966                 return -1;
6967
6968         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6969 }
6970
6971
6972 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6973 {
6974         if (wpa_s->current_ssid == NULL) {
6975                 /*
6976                  * current_ssid can be cleared when P2P client interface gets
6977                  * disconnected, so assume this interface was used as P2P
6978                  * client.
6979                  */
6980                 return 1;
6981         }
6982         return wpa_s->current_ssid->p2p_group &&
6983                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6984 }
6985
6986
6987 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6988 {
6989         struct wpa_supplicant *wpa_s = eloop_ctx;
6990
6991         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6992                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6993                            "disabled");
6994                 return;
6995         }
6996
6997         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6998                    "group");
6999         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7000 }
7001
7002
7003 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7004 {
7005         int timeout;
7006
7007         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7008                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7009
7010         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7011                 return;
7012
7013         timeout = wpa_s->conf->p2p_group_idle;
7014         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7015             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7016             timeout = P2P_MAX_CLIENT_IDLE;
7017
7018         if (timeout == 0)
7019                 return;
7020
7021         if (timeout < 0) {
7022                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7023                         timeout = 0; /* special client mode no-timeout */
7024                 else
7025                         return;
7026         }
7027
7028         if (wpa_s->p2p_in_provisioning) {
7029                 /*
7030                  * Use the normal group formation timeout during the
7031                  * provisioning phase to avoid terminating this process too
7032                  * early due to group idle timeout.
7033                  */
7034                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7035                            "during provisioning");
7036                 return;
7037         }
7038
7039         if (wpa_s->show_group_started) {
7040                 /*
7041                  * Use the normal group formation timeout between the end of
7042                  * the provisioning phase and completion of 4-way handshake to
7043                  * avoid terminating this process too early due to group idle
7044                  * timeout.
7045                  */
7046                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7047                            "while waiting for initial 4-way handshake to "
7048                            "complete");
7049                 return;
7050         }
7051
7052         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7053                    timeout);
7054         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7055                                wpa_s, NULL);
7056 }
7057
7058
7059 /* Returns 1 if the interface was removed */
7060 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7061                           u16 reason_code, const u8 *ie, size_t ie_len,
7062                           int locally_generated)
7063 {
7064         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7065                 return 0;
7066
7067         if (!locally_generated)
7068                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7069                                  ie_len);
7070
7071         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7072             wpa_s->current_ssid &&
7073             wpa_s->current_ssid->p2p_group &&
7074             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7075                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7076                            "session is ending");
7077                 if (wpas_p2p_group_delete(wpa_s,
7078                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7079                     > 0)
7080                         return 1;
7081         }
7082
7083         return 0;
7084 }
7085
7086
7087 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7088                              u16 reason_code, const u8 *ie, size_t ie_len,
7089                              int locally_generated)
7090 {
7091         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7092                 return;
7093
7094         if (!locally_generated)
7095                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7096                                    ie_len);
7097 }
7098
7099
7100 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7101 {
7102         struct p2p_data *p2p = wpa_s->global->p2p;
7103
7104         if (p2p == NULL)
7105                 return;
7106
7107         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7108                 return;
7109
7110         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7111                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7112
7113         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7114                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7115
7116         if (wpa_s->wps &&
7117             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7118                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7119
7120         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7121                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7122
7123         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7124                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7125                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7126                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7127                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7128         }
7129
7130         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7131                 p2p_set_sec_dev_types(p2p,
7132                                       (void *) wpa_s->conf->sec_device_type,
7133                                       wpa_s->conf->num_sec_device_types);
7134
7135         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7136                 int i;
7137                 p2p_remove_wps_vendor_extensions(p2p);
7138                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7139                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7140                                 continue;
7141                         p2p_add_wps_vendor_extension(
7142                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
7143                 }
7144         }
7145
7146         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7147             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7148                 char country[3];
7149                 country[0] = wpa_s->conf->country[0];
7150                 country[1] = wpa_s->conf->country[1];
7151                 country[2] = 0x04;
7152                 p2p_set_country(p2p, country);
7153         }
7154
7155         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7156                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7157                                      wpa_s->conf->p2p_ssid_postfix ?
7158                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7159                                      0);
7160         }
7161
7162         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7163                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7164
7165         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7166                 u8 reg_class, channel;
7167                 int ret;
7168                 unsigned int r;
7169                 u8 channel_forced;
7170
7171                 if (wpa_s->conf->p2p_listen_reg_class &&
7172                     wpa_s->conf->p2p_listen_channel) {
7173                         reg_class = wpa_s->conf->p2p_listen_reg_class;
7174                         channel = wpa_s->conf->p2p_listen_channel;
7175                         channel_forced = 1;
7176                 } else {
7177                         reg_class = 81;
7178                         /*
7179                          * Pick one of the social channels randomly as the
7180                          * listen channel.
7181                          */
7182                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7183                                 channel = 1;
7184                         else
7185                                 channel = 1 + (r % 3) * 5;
7186                         channel_forced = 0;
7187                 }
7188                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7189                                              channel_forced);
7190                 if (ret)
7191                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7192                                    "failed: %d", ret);
7193         }
7194         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7195                 u8 op_reg_class, op_channel, cfg_op_channel;
7196                 int ret = 0;
7197                 unsigned int r;
7198                 if (wpa_s->conf->p2p_oper_reg_class &&
7199                     wpa_s->conf->p2p_oper_channel) {
7200                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7201                         op_channel = wpa_s->conf->p2p_oper_channel;
7202                         cfg_op_channel = 1;
7203                 } else {
7204                         op_reg_class = 81;
7205                         /*
7206                          * Use random operation channel from (1, 6, 11)
7207                          *if no other preference is indicated.
7208                          */
7209                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7210                                 op_channel = 1;
7211                         else
7212                                 op_channel = 1 + (r % 3) * 5;
7213                         cfg_op_channel = 0;
7214                 }
7215                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7216                                            cfg_op_channel);
7217                 if (ret)
7218                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7219                                    "failed: %d", ret);
7220         }
7221
7222         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7223                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7224                                       wpa_s->conf->p2p_pref_chan) < 0) {
7225                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7226                                    "update failed");
7227                 }
7228
7229                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7230                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7231                                    "update failed");
7232                 }
7233         }
7234
7235         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7236                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7237 }
7238
7239
7240 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7241                      int duration)
7242 {
7243         if (!wpa_s->ap_iface)
7244                 return -1;
7245         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7246                                    duration);
7247 }
7248
7249
7250 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7251 {
7252         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7253                 return -1;
7254
7255         wpa_s->global->cross_connection = enabled;
7256         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7257
7258         if (!enabled) {
7259                 struct wpa_supplicant *iface;
7260
7261                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7262                 {
7263                         if (iface->cross_connect_enabled == 0)
7264                                 continue;
7265
7266                         iface->cross_connect_enabled = 0;
7267                         iface->cross_connect_in_use = 0;
7268                         wpa_msg_global(iface->parent, MSG_INFO,
7269                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7270                                        iface->ifname,
7271                                        iface->cross_connect_uplink);
7272                 }
7273         }
7274
7275         return 0;
7276 }
7277
7278
7279 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7280 {
7281         struct wpa_supplicant *iface;
7282
7283         if (!uplink->global->cross_connection)
7284                 return;
7285
7286         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7287                 if (!iface->cross_connect_enabled)
7288                         continue;
7289                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7290                     0)
7291                         continue;
7292                 if (iface->ap_iface == NULL)
7293                         continue;
7294                 if (iface->cross_connect_in_use)
7295                         continue;
7296
7297                 iface->cross_connect_in_use = 1;
7298                 wpa_msg_global(iface->parent, MSG_INFO,
7299                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7300                                iface->ifname, iface->cross_connect_uplink);
7301         }
7302 }
7303
7304
7305 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7306 {
7307         struct wpa_supplicant *iface;
7308
7309         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7310                 if (!iface->cross_connect_enabled)
7311                         continue;
7312                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7313                     0)
7314                         continue;
7315                 if (!iface->cross_connect_in_use)
7316                         continue;
7317
7318                 wpa_msg_global(iface->parent, MSG_INFO,
7319                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7320                                iface->ifname, iface->cross_connect_uplink);
7321                 iface->cross_connect_in_use = 0;
7322         }
7323 }
7324
7325
7326 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7327 {
7328         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7329             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7330             wpa_s->cross_connect_disallowed)
7331                 wpas_p2p_disable_cross_connect(wpa_s);
7332         else
7333                 wpas_p2p_enable_cross_connect(wpa_s);
7334         if (!wpa_s->ap_iface &&
7335             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7336                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7337 }
7338
7339
7340 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7341 {
7342         wpas_p2p_disable_cross_connect(wpa_s);
7343         if (!wpa_s->ap_iface &&
7344             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7345                                          wpa_s, NULL))
7346                 wpas_p2p_set_group_idle_timeout(wpa_s);
7347 }
7348
7349
7350 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7351 {
7352         struct wpa_supplicant *iface;
7353
7354         if (!wpa_s->global->cross_connection)
7355                 return;
7356
7357         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7358                 if (iface == wpa_s)
7359                         continue;
7360                 if (iface->drv_flags &
7361                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7362                         continue;
7363                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7364                     iface != wpa_s->parent)
7365                         continue;
7366
7367                 wpa_s->cross_connect_enabled = 1;
7368                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7369                            sizeof(wpa_s->cross_connect_uplink));
7370                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7371                            "%s to %s whenever uplink is available",
7372                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7373
7374                 if (iface->ap_iface || iface->current_ssid == NULL ||
7375                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7376                     iface->cross_connect_disallowed ||
7377                     iface->wpa_state != WPA_COMPLETED)
7378                         break;
7379
7380                 wpa_s->cross_connect_in_use = 1;
7381                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7382                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7383                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7384                 break;
7385         }
7386 }
7387
7388
7389 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7390 {
7391         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7392             !wpa_s->p2p_in_provisioning)
7393                 return 0; /* not P2P client operation */
7394
7395         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7396                    "session overlap");
7397         if (wpa_s != wpa_s->parent)
7398                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
7399         wpas_p2p_group_formation_failed(wpa_s, 0);
7400         return 1;
7401 }
7402
7403
7404 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7405 {
7406         struct wpa_supplicant *wpa_s = eloop_ctx;
7407         wpas_p2p_notif_pbc_overlap(wpa_s);
7408 }
7409
7410
7411 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7412                                   enum wpas_p2p_channel_update_trig trig)
7413 {
7414         struct p2p_channels chan, cli_chan;
7415         struct wpa_used_freq_data *freqs = NULL;
7416         unsigned int num = wpa_s->num_multichan_concurrent;
7417
7418         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7419                 return;
7420
7421         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7422         if (!freqs)
7423                 return;
7424
7425         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7426
7427         os_memset(&chan, 0, sizeof(chan));
7428         os_memset(&cli_chan, 0, sizeof(cli_chan));
7429         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7430                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7431                            "channel list");
7432                 return;
7433         }
7434
7435         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7436
7437         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7438
7439         /*
7440          * The used frequencies map changed, so it is possible that a GO is
7441          * using a channel that is no longer valid for P2P use. It is also
7442          * possible that due to policy consideration, it would be preferable to
7443          * move it to a frequency already used by other station interfaces.
7444          */
7445         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7446
7447         os_free(freqs);
7448 }
7449
7450
7451 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7452                                      struct wpa_scan_results *scan_res)
7453 {
7454         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7455 }
7456
7457
7458 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7459 {
7460         struct wpa_global *global = wpa_s->global;
7461         int found = 0;
7462         const u8 *peer;
7463
7464         if (global->p2p == NULL)
7465                 return -1;
7466
7467         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7468
7469         if (wpa_s->pending_interface_name[0] &&
7470             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7471                 found = 1;
7472
7473         peer = p2p_get_go_neg_peer(global->p2p);
7474         if (peer) {
7475                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7476                            MACSTR, MAC2STR(peer));
7477                 p2p_unauthorize(global->p2p, peer);
7478                 found = 1;
7479         }
7480
7481         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7482                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7483                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7484                 found = 1;
7485         }
7486
7487         if (wpa_s->pending_pd_before_join) {
7488                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7489                 wpa_s->pending_pd_before_join = 0;
7490                 found = 1;
7491         }
7492
7493         wpas_p2p_stop_find(wpa_s);
7494
7495         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7496                 if (wpa_s == global->p2p_group_formation &&
7497                     (wpa_s->p2p_in_provisioning ||
7498                      wpa_s->parent->pending_interface_type ==
7499                      WPA_IF_P2P_CLIENT)) {
7500                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7501                                    "formation found - cancelling",
7502                                    wpa_s->ifname);
7503                         found = 1;
7504                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7505                                              wpa_s->parent, NULL);
7506                         if (wpa_s->p2p_in_provisioning) {
7507                                 wpas_group_formation_completed(wpa_s, 0, 0);
7508                                 break;
7509                         }
7510                         wpas_p2p_group_delete(wpa_s,
7511                                               P2P_GROUP_REMOVAL_REQUESTED);
7512                         break;
7513                 } else if (wpa_s->p2p_in_invitation) {
7514                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7515                                    wpa_s->ifname);
7516                         found = 1;
7517                         wpas_p2p_group_formation_failed(wpa_s, 0);
7518                         break;
7519                 }
7520         }
7521
7522         if (!found) {
7523                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7524                 return -1;
7525         }
7526
7527         return 0;
7528 }
7529
7530
7531 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7532 {
7533         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7534                 return;
7535
7536         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7537                    "being available anymore");
7538         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7539 }
7540
7541
7542 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7543                                    int freq_24, int freq_5, int freq_overall)
7544 {
7545         struct p2p_data *p2p = wpa_s->global->p2p;
7546         if (p2p == NULL)
7547                 return;
7548         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7549 }
7550
7551
7552 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7553 {
7554         u8 peer[ETH_ALEN];
7555         struct p2p_data *p2p = wpa_s->global->p2p;
7556
7557         if (p2p == NULL)
7558                 return -1;
7559
7560         if (hwaddr_aton(addr, peer))
7561                 return -1;
7562
7563         return p2p_unauthorize(p2p, peer);
7564 }
7565
7566
7567 /**
7568  * wpas_p2p_disconnect - Disconnect from a P2P Group
7569  * @wpa_s: Pointer to wpa_supplicant data
7570  * Returns: 0 on success, -1 on failure
7571  *
7572  * This can be used to disconnect from a group in which the local end is a P2P
7573  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7574  * virtual network interface was created for this group, that interface will be
7575  * removed. Otherwise, only the configured P2P group network will be removed
7576  * from the interface.
7577  */
7578 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7579 {
7580
7581         if (wpa_s == NULL)
7582                 return -1;
7583
7584         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7585                 -1 : 0;
7586 }
7587
7588
7589 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7590 {
7591         int ret;
7592
7593         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7594                 return 0;
7595
7596         ret = p2p_in_progress(wpa_s->global->p2p);
7597         if (ret == 0) {
7598                 /*
7599                  * Check whether there is an ongoing WPS provisioning step (or
7600                  * other parts of group formation) on another interface since
7601                  * p2p_in_progress() does not report this to avoid issues for
7602                  * scans during such provisioning step.
7603                  */
7604                 if (wpa_s->global->p2p_group_formation &&
7605                     wpa_s->global->p2p_group_formation != wpa_s) {
7606                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7607                                 "in group formation",
7608                                 wpa_s->global->p2p_group_formation->ifname);
7609                         ret = 1;
7610                 }
7611         }
7612
7613         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7614                 struct os_reltime now;
7615                 os_get_reltime(&now);
7616                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7617                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7618                         /* Wait for the first client has expired */
7619                         wpa_s->global->p2p_go_wait_client.sec = 0;
7620                 } else {
7621                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7622                         ret = 1;
7623                 }
7624         }
7625
7626         return ret;
7627 }
7628
7629
7630 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7631                               struct wpa_ssid *ssid)
7632 {
7633         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7634             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7635                                  wpa_s->parent, NULL) > 0) {
7636                 /**
7637                  * Remove the network by scheduling the group formation
7638                  * timeout to happen immediately. The teardown code
7639                  * needs to be scheduled to run asynch later so that we
7640                  * don't delete data from under ourselves unexpectedly.
7641                  * Calling wpas_p2p_group_formation_timeout directly
7642                  * causes a series of crashes in WPS failure scenarios.
7643                  */
7644                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7645                            "P2P group network getting removed");
7646                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7647                                        wpa_s->parent, NULL);
7648         }
7649 }
7650
7651
7652 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7653                                           const u8 *addr, const u8 *ssid,
7654                                           size_t ssid_len)
7655 {
7656         struct wpa_ssid *s;
7657         size_t i;
7658
7659         for (s = wpa_s->conf->ssid; s; s = s->next) {
7660                 if (s->disabled != 2)
7661                         continue;
7662                 if (ssid &&
7663                     (ssid_len != s->ssid_len ||
7664                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7665                         continue;
7666                 if (addr == NULL) {
7667                         if (s->mode == WPAS_MODE_P2P_GO)
7668                                 return s;
7669                         continue;
7670                 }
7671                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7672                         return s; /* peer is GO in the persistent group */
7673                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7674                         continue;
7675                 for (i = 0; i < s->num_p2p_clients; i++) {
7676                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7677                                       addr, ETH_ALEN) == 0)
7678                                 return s; /* peer is P2P client in persistent
7679                                            * group */
7680                 }
7681         }
7682
7683         return NULL;
7684 }
7685
7686
7687 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7688                                        const u8 *addr)
7689 {
7690         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7691                                  wpa_s->parent, NULL) > 0) {
7692                 /*
7693                  * This can happen if WPS provisioning step is not terminated
7694                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7695                  * peer was able to connect, there is no need to time out group
7696                  * formation after this, though. In addition, this is used with
7697                  * the initial connection wait on the GO as a separate formation
7698                  * timeout and as such, expected to be hit after the initial WPS
7699                  * provisioning step.
7700                  */
7701                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7702
7703                 if (!wpa_s->p2p_go_group_formation_completed &&
7704                     !wpa_s->group_formation_reported) {
7705                         /*
7706                          * GO has not yet notified group formation success since
7707                          * the WPS step was not completed cleanly. Do that
7708                          * notification now since the P2P Client was able to
7709                          * connect and as such, must have received the
7710                          * credential from the WPS step.
7711                          */
7712                         if (wpa_s->global->p2p)
7713                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7714                         wpas_group_formation_completed(wpa_s, 1, 0);
7715                 }
7716         }
7717         if (!wpa_s->p2p_go_group_formation_completed) {
7718                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7719                 wpa_s->p2p_go_group_formation_completed = 1;
7720                 wpa_s->global->p2p_group_formation = NULL;
7721                 wpa_s->p2p_in_provisioning = 0;
7722                 wpa_s->p2p_in_invitation = 0;
7723         }
7724         wpa_s->global->p2p_go_wait_client.sec = 0;
7725         if (addr == NULL)
7726                 return;
7727         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7728 }
7729
7730
7731 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7732                                        int group_added)
7733 {
7734         struct wpa_supplicant *group = wpa_s;
7735         int ret = 0;
7736
7737         if (wpa_s->global->p2p_group_formation)
7738                 group = wpa_s->global->p2p_group_formation;
7739         wpa_s = wpa_s->global->p2p_init_wpa_s;
7740         offchannel_send_action_done(wpa_s);
7741         if (group_added)
7742                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7743         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7744         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7745                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7746                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7747                          wpa_s->p2p_go_vht_center_freq2,
7748                          wpa_s->p2p_persistent_id,
7749                          wpa_s->p2p_pd_before_go_neg,
7750                          wpa_s->p2p_go_ht40,
7751                          wpa_s->p2p_go_vht,
7752                          wpa_s->p2p_go_max_oper_chwidth, NULL, 0);
7753         return ret;
7754 }
7755
7756
7757 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7758 {
7759         int res;
7760
7761         if (!wpa_s->p2p_fallback_to_go_neg ||
7762             wpa_s->p2p_in_provisioning <= 5)
7763                 return 0;
7764
7765         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7766                 return 0; /* peer operating as a GO */
7767
7768         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7769                 "fallback to GO Negotiation");
7770         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7771                        "reason=GO-not-found");
7772         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7773
7774         return res == 1 ? 2 : 1;
7775 }
7776
7777
7778 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7779 {
7780         struct wpa_supplicant *ifs;
7781
7782         if (wpa_s->wpa_state > WPA_SCANNING) {
7783                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7784                         "concurrent operation",
7785                         wpa_s->conf->p2p_search_delay);
7786                 return wpa_s->conf->p2p_search_delay;
7787         }
7788
7789         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7790                          radio_list) {
7791                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7792                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7793                                 "delay due to concurrent operation on "
7794                                 "interface %s",
7795                                 wpa_s->conf->p2p_search_delay,
7796                                 ifs->ifname);
7797                         return wpa_s->conf->p2p_search_delay;
7798                 }
7799         }
7800
7801         return 0;
7802 }
7803
7804
7805 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7806                                      struct wpa_ssid *s, const u8 *addr,
7807                                      int iface_addr)
7808 {
7809         struct psk_list_entry *psk, *tmp;
7810         int changed = 0;
7811
7812         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7813                               list) {
7814                 if ((iface_addr && !psk->p2p &&
7815                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7816                     (!iface_addr && psk->p2p &&
7817                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7818                         wpa_dbg(wpa_s, MSG_DEBUG,
7819                                 "P2P: Remove persistent group PSK list entry for "
7820                                 MACSTR " p2p=%u",
7821                                 MAC2STR(psk->addr), psk->p2p);
7822                         dl_list_del(&psk->list);
7823                         os_free(psk);
7824                         changed++;
7825                 }
7826         }
7827
7828         return changed;
7829 }
7830
7831
7832 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7833                          const u8 *p2p_dev_addr,
7834                          const u8 *psk, size_t psk_len)
7835 {
7836         struct wpa_ssid *ssid = wpa_s->current_ssid;
7837         struct wpa_ssid *persistent;
7838         struct psk_list_entry *p, *last;
7839
7840         if (psk_len != sizeof(p->psk))
7841                 return;
7842
7843         if (p2p_dev_addr) {
7844                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7845                         " p2p_dev_addr=" MACSTR,
7846                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7847                 if (is_zero_ether_addr(p2p_dev_addr))
7848                         p2p_dev_addr = NULL;
7849         } else {
7850                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7851                         MAC2STR(mac_addr));
7852         }
7853
7854         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7855                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7856                 /* To be added to persistent group once created */
7857                 if (wpa_s->global->add_psk == NULL) {
7858                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7859                         if (wpa_s->global->add_psk == NULL)
7860                                 return;
7861                 }
7862                 p = wpa_s->global->add_psk;
7863                 if (p2p_dev_addr) {
7864                         p->p2p = 1;
7865                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7866                 } else {
7867                         p->p2p = 0;
7868                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7869                 }
7870                 os_memcpy(p->psk, psk, psk_len);
7871                 return;
7872         }
7873
7874         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7875                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7876                 return;
7877         }
7878
7879         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7880                                              ssid->ssid_len);
7881         if (!persistent) {
7882                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7883                 return;
7884         }
7885
7886         p = os_zalloc(sizeof(*p));
7887         if (p == NULL)
7888                 return;
7889         if (p2p_dev_addr) {
7890                 p->p2p = 1;
7891                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7892         } else {
7893                 p->p2p = 0;
7894                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7895         }
7896         os_memcpy(p->psk, psk, psk_len);
7897
7898         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7899             (last = dl_list_last(&persistent->psk_list,
7900                                  struct psk_list_entry, list))) {
7901                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7902                         MACSTR " (p2p=%u) to make room for a new one",
7903                         MAC2STR(last->addr), last->p2p);
7904                 dl_list_del(&last->list);
7905                 os_free(last);
7906         }
7907
7908         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7909                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7910                                   p2p_dev_addr == NULL);
7911         if (p2p_dev_addr) {
7912                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7913                         MACSTR, MAC2STR(p2p_dev_addr));
7914         } else {
7915                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7916                         MAC2STR(mac_addr));
7917         }
7918         dl_list_add(&persistent->psk_list, &p->list);
7919
7920         if (wpa_s->parent->conf->update_config &&
7921             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7922                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7923 }
7924
7925
7926 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7927                                 struct wpa_ssid *s, const u8 *addr,
7928                                 int iface_addr)
7929 {
7930         int res;
7931
7932         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7933         if (res > 0 && wpa_s->conf->update_config &&
7934             wpa_config_write(wpa_s->confname, wpa_s->conf))
7935                 wpa_dbg(wpa_s, MSG_DEBUG,
7936                         "P2P: Failed to update configuration");
7937 }
7938
7939
7940 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7941                                       const u8 *peer, int iface_addr)
7942 {
7943         struct hostapd_data *hapd;
7944         struct hostapd_wpa_psk *psk, *prev, *rem;
7945         struct sta_info *sta;
7946
7947         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7948             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7949                 return;
7950
7951         /* Remove per-station PSK entry */
7952         hapd = wpa_s->ap_iface->bss[0];
7953         prev = NULL;
7954         psk = hapd->conf->ssid.wpa_psk;
7955         while (psk) {
7956                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7957                     (!iface_addr &&
7958                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7959                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7960                                 MACSTR " iface_addr=%d",
7961                                 MAC2STR(peer), iface_addr);
7962                         if (prev)
7963                                 prev->next = psk->next;
7964                         else
7965                                 hapd->conf->ssid.wpa_psk = psk->next;
7966                         rem = psk;
7967                         psk = psk->next;
7968                         os_free(rem);
7969                 } else {
7970                         prev = psk;
7971                         psk = psk->next;
7972                 }
7973         }
7974
7975         /* Disconnect from group */
7976         if (iface_addr)
7977                 sta = ap_get_sta(hapd, peer);
7978         else
7979                 sta = ap_get_sta_p2p(hapd, peer);
7980         if (sta) {
7981                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7982                         " (iface_addr=%d) from group",
7983                         MAC2STR(peer), iface_addr);
7984                 hostapd_drv_sta_deauth(hapd, sta->addr,
7985                                        WLAN_REASON_DEAUTH_LEAVING);
7986                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7987         }
7988 }
7989
7990
7991 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7992                             int iface_addr)
7993 {
7994         struct wpa_ssid *s;
7995         struct wpa_supplicant *w;
7996         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
7997
7998         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
7999
8000         /* Remove from any persistent group */
8001         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
8002                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8003                         continue;
8004                 if (!iface_addr)
8005                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
8006                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
8007         }
8008
8009         /* Remove from any operating group */
8010         for (w = wpa_s->global->ifaces; w; w = w->next)
8011                 wpas_p2p_remove_client_go(w, peer, iface_addr);
8012 }
8013
8014
8015 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8016 {
8017         struct wpa_supplicant *wpa_s = eloop_ctx;
8018         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8019 }
8020
8021
8022 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8023 {
8024         struct wpa_supplicant *wpa_s = eloop_ctx;
8025
8026         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8027         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8028 }
8029
8030
8031 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8032                                         struct wpa_ssid *ssid)
8033 {
8034         struct wpa_supplicant *iface;
8035
8036         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8037                 if (!iface->current_ssid ||
8038                     iface->current_ssid->frequency == freq ||
8039                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8040                      !iface->current_ssid->p2p_group))
8041                         continue;
8042
8043                 /* Remove the connection with least priority */
8044                 if (!wpas_is_p2p_prioritized(iface)) {
8045                         /* STA connection has priority over existing
8046                          * P2P connection, so remove the interface. */
8047                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8048                         eloop_register_timeout(0, 0,
8049                                                wpas_p2p_group_freq_conflict,
8050                                                iface, NULL);
8051                         /* If connection in progress is P2P connection, do not
8052                          * proceed for the connection. */
8053                         if (wpa_s == iface)
8054                                 return -1;
8055                         else
8056                                 return 0;
8057                 } else {
8058                         /* P2P connection has priority, disable the STA network
8059                          */
8060                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
8061                                                        ssid);
8062                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8063                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8064                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8065                                   ETH_ALEN);
8066                         /* If P2P connection is in progress, continue
8067                          * connecting...*/
8068                         if (wpa_s == iface)
8069                                 return 0;
8070                         else
8071                                 return -1;
8072                 }
8073         }
8074
8075         return 0;
8076 }
8077
8078
8079 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8080 {
8081         struct wpa_ssid *ssid = wpa_s->current_ssid;
8082
8083         if (ssid == NULL || !ssid->p2p_group)
8084                 return 0;
8085
8086         if (wpa_s->p2p_last_4way_hs_fail &&
8087             wpa_s->p2p_last_4way_hs_fail == ssid) {
8088                 u8 go_dev_addr[ETH_ALEN];
8089                 struct wpa_ssid *persistent;
8090
8091                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8092                                               ssid->ssid,
8093                                               ssid->ssid_len) <= 0) {
8094                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8095                         goto disconnect;
8096                 }
8097
8098                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8099                         MACSTR, MAC2STR(go_dev_addr));
8100                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
8101                                                      ssid->ssid,
8102                                                      ssid->ssid_len);
8103                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8104                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8105                         goto disconnect;
8106                 }
8107                 wpa_msg_global(wpa_s->parent, MSG_INFO,
8108                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8109                                persistent->id);
8110         disconnect:
8111                 wpa_s->p2p_last_4way_hs_fail = NULL;
8112                 /*
8113                  * Remove the group from a timeout to avoid issues with caller
8114                  * continuing to use the interface if this is on a P2P group
8115                  * interface.
8116                  */
8117                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8118                                        wpa_s, NULL);
8119                 return 1;
8120         }
8121
8122         wpa_s->p2p_last_4way_hs_fail = ssid;
8123         return 0;
8124 }
8125
8126
8127 #ifdef CONFIG_WPS_NFC
8128
8129 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8130                                              struct wpabuf *p2p)
8131 {
8132         struct wpabuf *ret;
8133         size_t wsc_len;
8134
8135         if (p2p == NULL) {
8136                 wpabuf_free(wsc);
8137                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8138                 return NULL;
8139         }
8140
8141         wsc_len = wsc ? wpabuf_len(wsc) : 0;
8142         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8143         if (ret == NULL) {
8144                 wpabuf_free(wsc);
8145                 wpabuf_free(p2p);
8146                 return NULL;
8147         }
8148
8149         wpabuf_put_be16(ret, wsc_len);
8150         if (wsc)
8151                 wpabuf_put_buf(ret, wsc);
8152         wpabuf_put_be16(ret, wpabuf_len(p2p));
8153         wpabuf_put_buf(ret, p2p);
8154
8155         wpabuf_free(wsc);
8156         wpabuf_free(p2p);
8157         wpa_hexdump_buf(MSG_DEBUG,
8158                         "P2P: Generated NFC connection handover message", ret);
8159
8160         if (ndef && ret) {
8161                 struct wpabuf *tmp;
8162                 tmp = ndef_build_p2p(ret);
8163                 wpabuf_free(ret);
8164                 if (tmp == NULL) {
8165                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8166                         return NULL;
8167                 }
8168                 ret = tmp;
8169         }
8170
8171         return ret;
8172 }
8173
8174
8175 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8176                              struct wpa_ssid **ssid, u8 *go_dev_addr)
8177 {
8178         struct wpa_supplicant *iface;
8179
8180         if (go_dev_addr)
8181                 os_memset(go_dev_addr, 0, ETH_ALEN);
8182         if (ssid)
8183                 *ssid = NULL;
8184         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8185                 if (iface->wpa_state < WPA_ASSOCIATING ||
8186                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8187                     !iface->current_ssid->p2p_group ||
8188                     iface->current_ssid->mode != WPAS_MODE_INFRA)
8189                         continue;
8190                 if (ssid)
8191                         *ssid = iface->current_ssid;
8192                 if (go_dev_addr)
8193                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8194                 return iface->assoc_freq;
8195         }
8196         return 0;
8197 }
8198
8199
8200 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8201                                           int ndef)
8202 {
8203         struct wpabuf *wsc, *p2p;
8204         struct wpa_ssid *ssid;
8205         u8 go_dev_addr[ETH_ALEN];
8206         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8207
8208         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8209                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8210                 return NULL;
8211         }
8212
8213         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8214             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8215                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8216                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8217                 return NULL;
8218         }
8219
8220         if (cli_freq == 0) {
8221                 wsc = wps_build_nfc_handover_req_p2p(
8222                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8223         } else
8224                 wsc = NULL;
8225         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8226                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8227                                          ssid ? ssid->ssid_len : 0);
8228
8229         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8230 }
8231
8232
8233 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8234                                           int ndef, int tag)
8235 {
8236         struct wpabuf *wsc, *p2p;
8237         struct wpa_ssid *ssid;
8238         u8 go_dev_addr[ETH_ALEN];
8239         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8240
8241         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8242                 return NULL;
8243
8244         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8245             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8246                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8247                 return NULL;
8248
8249         if (cli_freq == 0) {
8250                 wsc = wps_build_nfc_handover_sel_p2p(
8251                         wpa_s->parent->wps,
8252                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8253                         DEV_PW_NFC_CONNECTION_HANDOVER,
8254                         wpa_s->conf->wps_nfc_dh_pubkey,
8255                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8256         } else
8257                 wsc = NULL;
8258         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8259                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8260                                          ssid ? ssid->ssid_len : 0);
8261
8262         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8263 }
8264
8265
8266 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8267                                    struct p2p_nfc_params *params)
8268 {
8269         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8270                    "connection handover (freq=%d)",
8271                    params->go_freq);
8272
8273         if (params->go_freq && params->go_ssid_len) {
8274                 wpa_s->p2p_wps_method = WPS_NFC;
8275                 wpa_s->pending_join_wps_method = WPS_NFC;
8276                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8277                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8278                           ETH_ALEN);
8279                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8280                                            params->go_ssid,
8281                                            params->go_ssid_len);
8282         }
8283
8284         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8285                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8286                                 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8287                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8288                                 params->go_ssid_len ? params->go_ssid : NULL,
8289                                 params->go_ssid_len);
8290 }
8291
8292
8293 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8294                                   struct p2p_nfc_params *params, int tag)
8295 {
8296         int res, persistent;
8297         struct wpa_ssid *ssid;
8298
8299         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8300                    "connection handover");
8301         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8302                 ssid = wpa_s->current_ssid;
8303                 if (ssid == NULL)
8304                         continue;
8305                 if (ssid->mode != WPAS_MODE_P2P_GO)
8306                         continue;
8307                 if (wpa_s->ap_iface == NULL)
8308                         continue;
8309                 break;
8310         }
8311         if (wpa_s == NULL) {
8312                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8313                 return -1;
8314         }
8315
8316         if (wpa_s->parent->p2p_oob_dev_pw_id !=
8317             DEV_PW_NFC_CONNECTION_HANDOVER &&
8318             !wpa_s->parent->p2p_oob_dev_pw) {
8319                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8320                 return -1;
8321         }
8322         res = wpas_ap_wps_add_nfc_pw(
8323                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
8324                 wpa_s->parent->p2p_oob_dev_pw,
8325                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
8326                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
8327         if (res)
8328                 return res;
8329
8330         if (!tag) {
8331                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8332                 return 0;
8333         }
8334
8335         if (!params->peer ||
8336             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8337                 return 0;
8338
8339         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8340                    " to join", MAC2STR(params->peer->p2p_device_addr));
8341
8342         wpa_s->global->p2p_invite_group = wpa_s;
8343         persistent = ssid->p2p_persistent_group &&
8344                 wpas_p2p_get_persistent(wpa_s->parent,
8345                                         params->peer->p2p_device_addr,
8346                                         ssid->ssid, ssid->ssid_len);
8347         wpa_s->parent->pending_invite_ssid_id = -1;
8348
8349         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8350                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8351                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8352                           wpa_s->global->p2p_dev_addr, persistent, 0,
8353                           wpa_s->parent->p2p_oob_dev_pw_id);
8354 }
8355
8356
8357 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8358                                     struct p2p_nfc_params *params,
8359                                     int forced_freq)
8360 {
8361         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8362                    "connection handover");
8363         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8364                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8365                                 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8366                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8367                                 NULL, 0);
8368 }
8369
8370
8371 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8372                                     struct p2p_nfc_params *params,
8373                                     int forced_freq)
8374 {
8375         int res;
8376
8377         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8378                    "connection handover");
8379         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8380                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8381                                forced_freq, wpa_s->p2p_go_vht_center_freq2,
8382                                -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8383                                NULL, 0);
8384         if (res)
8385                 return res;
8386
8387         res = wpas_p2p_listen(wpa_s, 60);
8388         if (res) {
8389                 p2p_unauthorize(wpa_s->global->p2p,
8390                                 params->peer->p2p_device_addr);
8391         }
8392
8393         return res;
8394 }
8395
8396
8397 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8398                                             const struct wpabuf *data,
8399                                             int sel, int tag, int forced_freq)
8400 {
8401         const u8 *pos, *end;
8402         u16 len, id;
8403         struct p2p_nfc_params params;
8404         int res;
8405
8406         os_memset(&params, 0, sizeof(params));
8407         params.sel = sel;
8408
8409         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8410
8411         pos = wpabuf_head(data);
8412         end = pos + wpabuf_len(data);
8413
8414         if (end - pos < 2) {
8415                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8416                            "attributes");
8417                 return -1;
8418         }
8419         len = WPA_GET_BE16(pos);
8420         pos += 2;
8421         if (len > end - pos) {
8422                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8423                            "attributes");
8424                 return -1;
8425         }
8426         params.wsc_attr = pos;
8427         params.wsc_len = len;
8428         pos += len;
8429
8430         if (end - pos < 2) {
8431                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8432                            "attributes");
8433                 return -1;
8434         }
8435         len = WPA_GET_BE16(pos);
8436         pos += 2;
8437         if (len > end - pos) {
8438                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8439                            "attributes");
8440                 return -1;
8441         }
8442         params.p2p_attr = pos;
8443         params.p2p_len = len;
8444         pos += len;
8445
8446         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8447                     params.wsc_attr, params.wsc_len);
8448         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8449                     params.p2p_attr, params.p2p_len);
8450         if (pos < end) {
8451                 wpa_hexdump(MSG_DEBUG,
8452                             "P2P: Ignored extra data after P2P attributes",
8453                             pos, end - pos);
8454         }
8455
8456         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8457         if (res)
8458                 return res;
8459
8460         if (params.next_step == NO_ACTION)
8461                 return 0;
8462
8463         if (params.next_step == BOTH_GO) {
8464                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8465                         MAC2STR(params.peer->p2p_device_addr));
8466                 return 0;
8467         }
8468
8469         if (params.next_step == PEER_CLIENT) {
8470                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8471                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8472                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8473                                 " ssid=\"%s\"",
8474                                 MAC2STR(params.peer->p2p_device_addr),
8475                                 params.go_freq,
8476                                 MAC2STR(params.go_dev_addr),
8477                                 wpa_ssid_txt(params.go_ssid,
8478                                              params.go_ssid_len));
8479                 } else {
8480                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8481                                 "peer=" MACSTR " freq=%d",
8482                                 MAC2STR(params.peer->p2p_device_addr),
8483                                 params.go_freq);
8484                 }
8485                 return 0;
8486         }
8487
8488         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8489                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8490                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8491                 return 0;
8492         }
8493
8494         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8495         wpa_s->p2p_oob_dev_pw = NULL;
8496
8497         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8498                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8499                            "received");
8500                 return -1;
8501         }
8502
8503         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8504         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8505         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8506                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8507         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8508                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8509         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8510
8511         if (tag) {
8512                 if (id < 0x10) {
8513                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8514                                    "peer OOB Device Password Id %u", id);
8515                         return -1;
8516                 }
8517                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8518                            "Device Password Id %u", id);
8519                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8520                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8521                                 params.oob_dev_pw_len -
8522                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
8523                 wpa_s->p2p_oob_dev_pw_id = id;
8524                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8525                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8526                         params.oob_dev_pw_len -
8527                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8528                 if (wpa_s->p2p_oob_dev_pw == NULL)
8529                         return -1;
8530
8531                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8532                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8533                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8534                         return -1;
8535         } else {
8536                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8537                            "without Device Password");
8538                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8539         }
8540
8541         switch (params.next_step) {
8542         case NO_ACTION:
8543         case BOTH_GO:
8544         case PEER_CLIENT:
8545                 /* already covered above */
8546                 return 0;
8547         case JOIN_GROUP:
8548                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8549         case AUTH_JOIN:
8550                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8551         case INIT_GO_NEG:
8552                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8553         case RESP_GO_NEG:
8554                 /* TODO: use own OOB Dev Pw */
8555                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8556         }
8557
8558         return -1;
8559 }
8560
8561
8562 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8563                              const struct wpabuf *data, int forced_freq)
8564 {
8565         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8566                 return -1;
8567
8568         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8569 }
8570
8571
8572 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8573                                  const struct wpabuf *req,
8574                                  const struct wpabuf *sel, int forced_freq)
8575 {
8576         struct wpabuf *tmp;
8577         int ret;
8578
8579         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8580                 return -1;
8581
8582         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8583
8584         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8585                           wpabuf_head(req), wpabuf_len(req));
8586         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8587                           wpabuf_head(sel), wpabuf_len(sel));
8588         if (forced_freq)
8589                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8590         tmp = ndef_parse_p2p(init ? sel : req);
8591         if (tmp == NULL) {
8592                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8593                 return -1;
8594         }
8595
8596         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8597                                                forced_freq);
8598         wpabuf_free(tmp);
8599
8600         return ret;
8601 }
8602
8603
8604 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8605 {
8606         const u8 *if_addr;
8607         int go_intent = wpa_s->conf->p2p_go_intent;
8608         struct wpa_supplicant *iface;
8609
8610         if (wpa_s->global->p2p == NULL)
8611                 return -1;
8612
8613         if (!enabled) {
8614                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8615                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8616                 {
8617                         if (!iface->ap_iface)
8618                                 continue;
8619                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8620                 }
8621                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8622                                                  0, NULL);
8623                 if (wpa_s->p2p_nfc_tag_enabled)
8624                         wpas_p2p_remove_pending_group_interface(wpa_s);
8625                 wpa_s->p2p_nfc_tag_enabled = 0;
8626                 return 0;
8627         }
8628
8629         if (wpa_s->global->p2p_disabled)
8630                 return -1;
8631
8632         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8633             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8634             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8635             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8636                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8637                            "to allow static handover cases");
8638                 return -1;
8639         }
8640
8641         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8642
8643         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8644         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8645         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8646         if (wpa_s->p2p_oob_dev_pw == NULL)
8647                 return -1;
8648         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8649
8650         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8651             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8652                 /*
8653                  * P2P Group Interface present and the command came on group
8654                  * interface, so enable the token for the current interface.
8655                  */
8656                 wpa_s->create_p2p_iface = 0;
8657         } else {
8658                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8659         }
8660
8661         if (wpa_s->create_p2p_iface) {
8662                 enum wpa_driver_if_type iftype;
8663                 /* Prepare to add a new interface for the group */
8664                 iftype = WPA_IF_P2P_GROUP;
8665                 if (go_intent == 15)
8666                         iftype = WPA_IF_P2P_GO;
8667                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8668                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8669                                    "interface for the group");
8670                         return -1;
8671                 }
8672
8673                 if_addr = wpa_s->pending_interface_addr;
8674         } else
8675                 if_addr = wpa_s->own_addr;
8676
8677         wpa_s->p2p_nfc_tag_enabled = enabled;
8678
8679         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8680                 struct hostapd_data *hapd;
8681                 if (iface->ap_iface == NULL)
8682                         continue;
8683                 hapd = iface->ap_iface->bss[0];
8684                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8685                 hapd->conf->wps_nfc_dh_pubkey =
8686                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8687                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8688                 hapd->conf->wps_nfc_dh_privkey =
8689                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8690                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8691                 hapd->conf->wps_nfc_dev_pw =
8692                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8693                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8694
8695                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8696                         wpa_dbg(iface, MSG_DEBUG,
8697                                 "P2P: Failed to enable NFC Tag for GO");
8698                 }
8699         }
8700         p2p_set_authorized_oob_dev_pw_id(
8701                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8702                 if_addr);
8703
8704         return 0;
8705 }
8706
8707 #endif /* CONFIG_WPS_NFC */
8708
8709
8710 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8711                                              struct wpa_used_freq_data *freqs,
8712                                              unsigned int num)
8713 {
8714         u8 curr_chan, cand, chan;
8715         unsigned int i;
8716
8717         /*
8718          * If possible, optimize the Listen channel to be a channel that is
8719          * already used by one of the other interfaces.
8720          */
8721         if (!wpa_s->conf->p2p_optimize_listen_chan)
8722                 return;
8723
8724         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8725                 return;
8726
8727         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8728         for (i = 0, cand = 0; i < num; i++) {
8729                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8730                 if (curr_chan == chan) {
8731                         cand = 0;
8732                         break;
8733                 }
8734
8735                 if (chan == 1 || chan == 6 || chan == 11)
8736                         cand = chan;
8737         }
8738
8739         if (cand) {
8740                 wpa_dbg(wpa_s, MSG_DEBUG,
8741                         "P2P: Update Listen channel to %u based on operating channel",
8742                         cand);
8743                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8744         }
8745 }
8746
8747
8748 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8749 {
8750         struct hostapd_config *conf;
8751         struct p2p_go_neg_results params;
8752         struct csa_settings csa_settings;
8753         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8754         int old_freq = current_ssid->frequency;
8755         int ret;
8756
8757         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8758                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8759                 return -1;
8760         }
8761
8762         /*
8763          * TODO: This function may not always work correctly. For example,
8764          * when we have a running GO and a BSS on a DFS channel.
8765          */
8766         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8767                 wpa_dbg(wpa_s, MSG_DEBUG,
8768                         "P2P CSA: Failed to select new frequency for GO");
8769                 return -1;
8770         }
8771
8772         if (current_ssid->frequency == params.freq) {
8773                 wpa_dbg(wpa_s, MSG_DEBUG,
8774                         "P2P CSA: Selected same frequency - not moving GO");
8775                 return 0;
8776         }
8777
8778         conf = hostapd_config_defaults();
8779         if (!conf) {
8780                 wpa_dbg(wpa_s, MSG_DEBUG,
8781                         "P2P CSA: Failed to allocate default config");
8782                 return -1;
8783         }
8784
8785         current_ssid->frequency = params.freq;
8786         if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
8787                 wpa_dbg(wpa_s, MSG_DEBUG,
8788                         "P2P CSA: Failed to create new GO config");
8789                 ret = -1;
8790                 goto out;
8791         }
8792
8793         if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
8794                 wpa_dbg(wpa_s, MSG_DEBUG,
8795                         "P2P CSA: CSA to a different band is not supported");
8796                 ret = -1;
8797                 goto out;
8798         }
8799
8800         os_memset(&csa_settings, 0, sizeof(csa_settings));
8801         csa_settings.cs_count = P2P_GO_CSA_COUNT;
8802         csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
8803         csa_settings.freq_params.freq = params.freq;
8804         csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
8805         csa_settings.freq_params.ht_enabled = conf->ieee80211n;
8806         csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
8807
8808         if (conf->ieee80211ac) {
8809                 int freq1 = 0, freq2 = 0;
8810                 u8 chan, opclass;
8811
8812                 if (ieee80211_freq_to_channel_ext(params.freq,
8813                                                   conf->secondary_channel,
8814                                                   conf->vht_oper_chwidth,
8815                                                   &opclass, &chan) ==
8816                     NUM_HOSTAPD_MODES) {
8817                         wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
8818                         ret = -1;
8819                         goto out;
8820                 }
8821
8822                 if (conf->vht_oper_centr_freq_seg0_idx)
8823                         freq1 = ieee80211_chan_to_freq(
8824                                 NULL, opclass,
8825                                 conf->vht_oper_centr_freq_seg0_idx);
8826
8827                 if (conf->vht_oper_centr_freq_seg1_idx)
8828                         freq2 = ieee80211_chan_to_freq(
8829                                 NULL, opclass,
8830                                 conf->vht_oper_centr_freq_seg1_idx);
8831
8832                 if (freq1 < 0 || freq2 < 0) {
8833                         wpa_dbg(wpa_s, MSG_DEBUG,
8834                                 "P2P CSA: Selected invalid VHT center freqs");
8835                         ret = -1;
8836                         goto out;
8837                 }
8838
8839                 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
8840                 csa_settings.freq_params.center_freq1 = freq1;
8841                 csa_settings.freq_params.center_freq2 = freq2;
8842
8843                 switch (conf->vht_oper_chwidth) {
8844                 case VHT_CHANWIDTH_80MHZ:
8845                 case VHT_CHANWIDTH_80P80MHZ:
8846                         csa_settings.freq_params.bandwidth = 80;
8847                         break;
8848                 case VHT_CHANWIDTH_160MHZ:
8849                         csa_settings.freq_params.bandwidth = 160;
8850                         break;
8851                 }
8852         }
8853
8854         ret = ap_switch_channel(wpa_s, &csa_settings);
8855 out:
8856         current_ssid->frequency = old_freq;
8857         hostapd_config_free(conf);
8858         return ret;
8859 }
8860
8861
8862 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8863 {
8864         struct p2p_go_neg_results params;
8865         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8866
8867         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8868
8869         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8870                 current_ssid->frequency);
8871
8872         /* Stop the AP functionality */
8873         /* TODO: Should do this in a way that does not indicated to possible
8874          * P2P Clients in the group that the group is terminated. */
8875         wpa_supplicant_ap_deinit(wpa_s);
8876
8877         /* Reselect the GO frequency */
8878         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8879                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8880                 wpas_p2p_group_delete(wpa_s,
8881                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8882                 return;
8883         }
8884         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8885                 params.freq);
8886
8887         if (params.freq &&
8888             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8889                 wpa_printf(MSG_DEBUG,
8890                            "P2P: Selected freq (%u MHz) is not valid for P2P",
8891                            params.freq);
8892                 wpas_p2p_group_delete(wpa_s,
8893                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8894                 return;
8895         }
8896
8897         /* Update the frequency */
8898         current_ssid->frequency = params.freq;
8899         wpa_s->connect_without_scan = current_ssid;
8900         wpa_s->reassociate = 1;
8901         wpa_s->disconnected = 0;
8902         wpa_supplicant_req_scan(wpa_s, 0, 0);
8903 }
8904
8905
8906 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8907 {
8908         struct wpa_supplicant *wpa_s = eloop_ctx;
8909
8910         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8911                 return;
8912
8913         wpas_p2p_go_update_common_freqs(wpa_s);
8914
8915         /* Do not move GO in the middle of a CSA */
8916         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8917                 wpa_printf(MSG_DEBUG,
8918                            "P2P: CSA is in progress - not moving GO");
8919                 return;
8920         }
8921
8922         /*
8923          * First, try a channel switch flow. If it is not supported or fails,
8924          * take down the GO and bring it up again.
8925          */
8926         if (wpas_p2p_move_go_csa(wpa_s) < 0)
8927                 wpas_p2p_move_go_no_csa(wpa_s);
8928 }
8929
8930
8931 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
8932 {
8933         struct wpa_supplicant *wpa_s = eloop_ctx;
8934         struct wpa_used_freq_data *freqs = NULL;
8935         unsigned int num = wpa_s->num_multichan_concurrent;
8936
8937         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8938         if (!freqs)
8939                 return;
8940
8941         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8942
8943         /* Previous attempt to move a GO was not possible -- try again. */
8944         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
8945                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
8946
8947         os_free(freqs);
8948 }
8949
8950
8951 /*
8952  * Consider moving a GO from its currently used frequency:
8953  * 1. It is possible that due to regulatory consideration the frequency
8954  *    can no longer be used and there is a need to evacuate the GO.
8955  * 2. It is possible that due to MCC considerations, it would be preferable
8956  *    to move the GO to a channel that is currently used by some other
8957  *    station interface.
8958  *
8959  * In case a frequency that became invalid is once again valid, cancel a
8960  * previously initiated GO frequency change.
8961  */
8962 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
8963                                             struct wpa_used_freq_data *freqs,
8964                                             unsigned int num)
8965 {
8966         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
8967         unsigned int timeout;
8968         int freq;
8969
8970         wpas_p2p_go_update_common_freqs(wpa_s);
8971
8972         freq = wpa_s->current_ssid->frequency;
8973         for (i = 0, invalid_freq = 0; i < num; i++) {
8974                 if (freqs[i].freq == freq) {
8975                         flags = freqs[i].flags;
8976
8977                         /* The channel is invalid, must change it */
8978                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
8979                                 wpa_dbg(wpa_s, MSG_DEBUG,
8980                                         "P2P: Freq=%d MHz no longer valid for GO",
8981                                         freq);
8982                                 invalid_freq = 1;
8983                         }
8984                 } else if (freqs[i].flags == 0) {
8985                         /* Freq is not used by any other station interface */
8986                         continue;
8987                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
8988                                                freqs[i].freq)) {
8989                         /* Freq is not valid for P2P use cases */
8990                         continue;
8991                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8992                            P2P_GO_FREQ_MOVE_SCM) {
8993                         policy_move = 1;
8994                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8995                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
8996                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
8997                         policy_move = 1;
8998                 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
8999                             P2P_GO_FREQ_MOVE_SCM_ECSA) &&
9000                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9001                         if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
9002                                 policy_move = 1;
9003                         } else if ((wpa_s->drv_flags &
9004                                     WPA_DRIVER_FLAGS_AP_CSA) &&
9005                                    wpas_p2p_go_clients_support_ecsa(wpa_s)) {
9006                                 u8 chan;
9007
9008                                 /*
9009                                  * We do not support CSA between bands, so move
9010                                  * GO only within the same band.
9011                                  */
9012                                 if (wpa_s->ap_iface->current_mode->mode ==
9013                                     ieee80211_freq_to_chan(freqs[i].freq,
9014                                                            &chan))
9015                                         policy_move = 1;
9016                         }
9017                 }
9018         }
9019
9020         wpa_dbg(wpa_s, MSG_DEBUG,
9021                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9022                 invalid_freq, policy_move, flags);
9023
9024         /*
9025          * The channel is valid, or we are going to have a policy move, so
9026          * cancel timeout.
9027          */
9028         if (!invalid_freq || policy_move) {
9029                 wpa_dbg(wpa_s, MSG_DEBUG,
9030                         "P2P: Cancel a GO move from freq=%d MHz", freq);
9031                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9032
9033                 if (wpas_p2p_in_progress(wpa_s)) {
9034                         wpa_dbg(wpa_s, MSG_DEBUG,
9035                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9036                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9037                                              wpa_s, NULL);
9038                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9039                                                wpas_p2p_reconsider_moving_go,
9040                                                wpa_s, NULL);
9041                         return;
9042                 }
9043         }
9044
9045         if (!invalid_freq && (!policy_move || flags != 0)) {
9046                 wpa_dbg(wpa_s, MSG_DEBUG,
9047                         "P2P: Not initiating a GO frequency change");
9048                 return;
9049         }
9050
9051         /*
9052          * Do not consider moving GO if it is in the middle of a CSA. When the
9053          * CSA is finished this flow should be retriggered.
9054          */
9055         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9056                 wpa_dbg(wpa_s, MSG_DEBUG,
9057                         "P2P: Not initiating a GO frequency change - CSA is in progress");
9058                 return;
9059         }
9060
9061         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9062                 timeout = P2P_GO_FREQ_CHANGE_TIME;
9063         else
9064                 timeout = 0;
9065
9066         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9067                 freq, timeout);
9068         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9069         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9070 }
9071
9072
9073 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9074                                          struct wpa_used_freq_data *freqs,
9075                                          unsigned int num,
9076                                          enum wpas_p2p_channel_update_trig trig)
9077 {
9078         struct wpa_supplicant *ifs;
9079
9080         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9081                              NULL);
9082
9083         /*
9084          * Travers all the radio interfaces, and for each GO interface, check
9085          * if there is a need to move the GO from the frequency it is using,
9086          * or in case the frequency is valid again, cancel the evacuation flow.
9087          */
9088         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9089                          radio_list) {
9090                 if (ifs->current_ssid == NULL ||
9091                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9092                         continue;
9093
9094                 /*
9095                  * The GO was just started or completed channel switch, no need
9096                  * to move it.
9097                  */
9098                 if (wpa_s == ifs &&
9099                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9100                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9101                         wpa_dbg(wpa_s, MSG_DEBUG,
9102                                 "P2P: GO move - schedule re-consideration");
9103                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9104                                                wpas_p2p_reconsider_moving_go,
9105                                                wpa_s, NULL);
9106                         continue;
9107                 }
9108
9109                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9110         }
9111 }
9112
9113
9114 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9115 {
9116         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9117                 return;
9118
9119         wpas_p2p_update_channel_list(wpa_s,
9120                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9121 }
9122
9123
9124 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9125 {
9126         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9127                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9128                         "the management interface is being removed");
9129                 wpas_p2p_deinit_global(wpa_s->global);
9130         }
9131 }
9132
9133
9134 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9135 {
9136         if (wpa_s->ap_iface->bss)
9137                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9138         wpas_p2p_group_deinit(wpa_s);
9139 }