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  52  * it is currently using, but is no longer valid for P2P use cases.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  57  * Defines CSA parameters which are used when GO evacuates the no longer valid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         switch (type) {
 384         case P2P_SCAN_SOCIAL:
 385                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 386                                           sizeof(int));
 387                 if (params->freqs == NULL)
 388                         goto fail;
 389                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 390                         if (wpas_p2p_search_social_channel(
 391                                     wpa_s, social_channels_freq[i]))
 392                                 params->freqs[num_channels++] =
 393                                         social_channels_freq[i];
 394                 }
 395                 params->freqs[num_channels++] = 0;
 396                 break;
 397         case P2P_SCAN_FULL:
 398                 break;
 399         case P2P_SCAN_SPECIFIC:
 400                 params->freqs = os_calloc(2, sizeof(int));
 401                 if (params->freqs == NULL)
 402                         goto fail;
 403                 params->freqs[0] = freq;
 404                 params->freqs[1] = 0;
 405                 break;
 406         case P2P_SCAN_SOCIAL_PLUS_ONE:
 407                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 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                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 418                         params->freqs[num_channels++] = freq;
 419                 params->freqs[num_channels++] = 0;
 420                 break;
 421         }
 422
 423         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 424         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 425         if (ies == NULL) {
 426                 wpabuf_free(wps_ie);
 427                 goto fail;
 428         }
 429         wpabuf_put_buf(ies, wps_ie);
 430         wpabuf_free(wps_ie);
 431
 432         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 433
 434         params->p2p_probe = 1;
 435         n = os_malloc(wpabuf_len(ies));
 436         if (n == NULL) {
 437                 wpabuf_free(ies);
 438                 goto fail;
 439         }
 440         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 441         params->extra_ies = n;
 442         params->extra_ies_len = wpabuf_len(ies);
 443         wpabuf_free(ies);
 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->p2p_mgmt ?
 804                                               wpa_s->parent->own_addr :
 805                                               wpa_s->own_addr);
 806                 } else if (!s && !go_wpa_s) {
 807                         if (wpas_p2p_add_group_interface(wpa_s,
 808                                                          WPA_IF_P2P_GO) < 0) {
 809                                 wpa_printf(MSG_ERROR,
 810                                            "P2P: Failed to allocate a new interface for the group");
 811                                 return P2PS_SETUP_NONE;
 812                         }
 813                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 814                         p2p_set_intended_addr(wpa_s->global->p2p,
 815                                               wpa_s->pending_interface_addr);
 816                 }
 817         }
 818
 819         return conncap;
 820 }
 821
 822
 823 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 824                                  enum p2p_group_removal_reason removal_reason)
 825 {
 826         struct wpa_ssid *ssid;
 827         char *gtype;
 828         const char *reason;
 829
 830         ssid = wpa_s->current_ssid;
 831         if (ssid == NULL) {
 832                 /*
 833                  * The current SSID was not known, but there may still be a
 834                  * pending P2P group interface waiting for provisioning or a
 835                  * P2P group that is trying to reconnect.
 836                  */
 837                 ssid = wpa_s->conf->ssid;
 838                 while (ssid) {
 839                         if (ssid->p2p_group && ssid->disabled != 2)
 840                                 break;
 841                         ssid = ssid->next;
 842                 }
 843                 if (ssid == NULL &&
 844                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 845                 {
 846                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 847                                    "not found");
 848                         return -1;
 849                 }
 850         }
 851         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 852                 gtype = "GO";
 853         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 854                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 855                 wpa_s->reassociate = 0;
 856                 wpa_s->disconnected = 1;
 857                 gtype = "client";
 858         } else
 859                 gtype = "GO";
 860
 861         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 862                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 863
 864         if (os_strcmp(gtype, "client") == 0) {
 865                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 866                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 867                                                 wpa_s, NULL)) {
 868                         wpa_printf(MSG_DEBUG,
 869                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 870                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 871                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 872                                              wpa_s, NULL);
 873                 }
 874         }
 875
 876         if (wpa_s->cross_connect_in_use) {
 877                 wpa_s->cross_connect_in_use = 0;
 878                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
 879                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 880                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 881         }
 882         switch (removal_reason) {
 883         case P2P_GROUP_REMOVAL_REQUESTED:
 884                 reason = " reason=REQUESTED";
 885                 break;
 886         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 887                 reason = " reason=FORMATION_FAILED";
 888                 break;
 889         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 890                 reason = " reason=IDLE";
 891                 break;
 892         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 893                 reason = " reason=UNAVAILABLE";
 894                 break;
 895         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 896                 reason = " reason=GO_ENDING_SESSION";
 897                 break;
 898         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 899                 reason = " reason=PSK_FAILURE";
 900                 break;
 901         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 902                 reason = " reason=FREQ_CONFLICT";
 903                 break;
 904         default:
 905                 reason = "";
 906                 break;
 907         }
 908         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 909                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
 910                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 911                                wpa_s->ifname, gtype, reason);
 912         }
 913
 914         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 915                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 916         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 917                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 918         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 919                                  wpa_s->p2pdev, NULL) > 0) {
 920                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 921                            "timeout");
 922                 wpa_s->p2p_in_provisioning = 0;
 923                 wpas_p2p_group_formation_failed(wpa_s, 1);
 924         }
 925
 926         wpa_s->p2p_in_invitation = 0;
 927         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
 928         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
 929
 930         /*
 931          * Make sure wait for the first client does not remain active after the
 932          * group has been removed.
 933          */
 934         wpa_s->global->p2p_go_wait_client.sec = 0;
 935
 936         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 937                 struct wpa_global *global;
 938                 char *ifname;
 939                 enum wpa_driver_if_type type;
 940                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 941                         wpa_s->ifname);
 942                 global = wpa_s->global;
 943                 ifname = os_strdup(wpa_s->ifname);
 944                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 945                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 946                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 947                 wpa_s = global->ifaces;
 948                 if (wpa_s && ifname)
 949                         wpa_drv_if_remove(wpa_s, type, ifname);
 950                 os_free(ifname);
 951                 return 1;
 952         }
 953
 954         /*
 955          * The primary interface was used for P2P group operations, so
 956          * need to reset its p2pdev.
 957          */
 958         wpa_s->p2pdev = wpa_s->parent;
 959
 960         if (!wpa_s->p2p_go_group_formation_completed) {
 961                 wpa_s->global->p2p_group_formation = NULL;
 962                 wpa_s->p2p_in_provisioning = 0;
 963         }
 964
 965         wpa_s->show_group_started = 0;
 966         os_free(wpa_s->go_params);
 967         wpa_s->go_params = NULL;
 968
 969         os_free(wpa_s->p2p_group_common_freqs);
 970         wpa_s->p2p_group_common_freqs = NULL;
 971         wpa_s->p2p_group_common_freqs_num = 0;
 972
 973         wpa_s->waiting_presence_resp = 0;
 974
 975         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 976         if (ssid && (ssid->p2p_group ||
 977                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 978                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 979                 int id = ssid->id;
 980                 if (ssid == wpa_s->current_ssid) {
 981                         wpa_sm_set_config(wpa_s->wpa, NULL);
 982                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 983                         wpa_s->current_ssid = NULL;
 984                 }
 985                 /*
 986                  * Networks objects created during any P2P activities are not
 987                  * exposed out as they might/will confuse certain non-P2P aware
 988                  * applications since these network objects won't behave like
 989                  * regular ones.
 990                  *
 991                  * Likewise, we don't send out network removed signals for such
 992                  * network objects.
 993                  */
 994                 wpa_config_remove_network(wpa_s->conf, id);
 995                 wpa_supplicant_clear_status(wpa_s);
 996                 wpa_supplicant_cancel_sched_scan(wpa_s);
 997         } else {
 998                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 999                            "found");
1000         }
1001         if (wpa_s->ap_iface)
1002                 wpa_supplicant_ap_deinit(wpa_s);
1003         else
1004                 wpa_drv_deinit_p2p_cli(wpa_s);
1005
1006         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1007
1008         return 0;
1009 }
1010
1011
1012 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
1013                                      u8 *go_dev_addr,
1014                                      const u8 *ssid, size_t ssid_len)
1015 {
1016         struct wpa_bss *bss;
1017         const u8 *bssid;
1018         struct wpabuf *p2p;
1019         u8 group_capab;
1020         const u8 *addr;
1021
1022         if (wpa_s->go_params)
1023                 bssid = wpa_s->go_params->peer_interface_addr;
1024         else
1025                 bssid = wpa_s->bssid;
1026
1027         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
1028         if (bss == NULL && wpa_s->go_params &&
1029             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
1030                 bss = wpa_bss_get_p2p_dev_addr(
1031                         wpa_s, wpa_s->go_params->peer_device_addr);
1032         if (bss == NULL) {
1033                 u8 iface_addr[ETH_ALEN];
1034                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1035                                            iface_addr) == 0)
1036                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1037         }
1038         if (bss == NULL) {
1039                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1040                            "group is persistent - BSS " MACSTR " not found",
1041                            MAC2STR(bssid));
1042                 return 0;
1043         }
1044
1045         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1046         if (p2p == NULL)
1047                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1048                                                          P2P_IE_VENDOR_TYPE);
1049         if (p2p == NULL) {
1050                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1051                            "group is persistent - BSS " MACSTR
1052                            " did not include P2P IE", MAC2STR(bssid));
1053                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1054                             (u8 *) (bss + 1), bss->ie_len);
1055                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1056                             ((u8 *) bss + 1) + bss->ie_len,
1057                             bss->beacon_ie_len);
1058                 return 0;
1059         }
1060
1061         group_capab = p2p_get_group_capab(p2p);
1062         addr = p2p_get_go_dev_addr(p2p);
1063         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1064                    "group_capab=0x%x", group_capab);
1065         if (addr) {
1066                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1067                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1068                            MAC2STR(addr));
1069         } else
1070                 os_memset(go_dev_addr, 0, ETH_ALEN);
1071         wpabuf_free(p2p);
1072
1073         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1074                    "go_dev_addr=" MACSTR,
1075                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1076
1077         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1078 }
1079
1080
1081 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1082                                            struct wpa_ssid *ssid,
1083                                            const u8 *go_dev_addr)
1084 {
1085         struct wpa_ssid *s;
1086         int changed = 0;
1087
1088         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1089                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1090         for (s = wpa_s->conf->ssid; s; s = s->next) {
1091                 if (s->disabled == 2 &&
1092                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1093                     s->ssid_len == ssid->ssid_len &&
1094                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1095                         break;
1096         }
1097
1098         if (s) {
1099                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1100                            "entry");
1101                 if (ssid->passphrase && !s->passphrase)
1102                         changed = 1;
1103                 else if (ssid->passphrase && s->passphrase &&
1104                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1105                         changed = 1;
1106         } else {
1107                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1108                            "entry");
1109                 changed = 1;
1110                 s = wpa_config_add_network(wpa_s->conf);
1111                 if (s == NULL)
1112                         return -1;
1113
1114                 /*
1115                  * Instead of network_added we emit persistent_group_added
1116                  * notification. Also to keep the defense checks in
1117                  * persistent_group obj registration method, we set the
1118                  * relevant flags in s to designate it as a persistent group.
1119                  */
1120                 s->p2p_group = 1;
1121                 s->p2p_persistent_group = 1;
1122                 wpas_notify_persistent_group_added(wpa_s, s);
1123                 wpa_config_set_network_defaults(s);
1124         }
1125
1126         s->p2p_group = 1;
1127         s->p2p_persistent_group = 1;
1128         s->disabled = 2;
1129         s->bssid_set = 1;
1130         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1131         s->mode = ssid->mode;
1132         s->auth_alg = WPA_AUTH_ALG_OPEN;
1133         s->key_mgmt = WPA_KEY_MGMT_PSK;
1134         s->proto = WPA_PROTO_RSN;
1135         s->pairwise_cipher = WPA_CIPHER_CCMP;
1136         s->export_keys = 1;
1137         if (ssid->passphrase) {
1138                 os_free(s->passphrase);
1139                 s->passphrase = os_strdup(ssid->passphrase);
1140         }
1141         if (ssid->psk_set) {
1142                 s->psk_set = 1;
1143                 os_memcpy(s->psk, ssid->psk, 32);
1144         }
1145         if (s->passphrase && !s->psk_set)
1146                 wpa_config_update_psk(s);
1147         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1148                 os_free(s->ssid);
1149                 s->ssid = os_malloc(ssid->ssid_len);
1150         }
1151         if (s->ssid) {
1152                 s->ssid_len = ssid->ssid_len;
1153                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1154         }
1155         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1156                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1157                 wpa_s->global->add_psk = NULL;
1158                 changed = 1;
1159         }
1160
1161         if (changed && wpa_s->conf->update_config &&
1162             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1163                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1164         }
1165
1166         return s->id;
1167 }
1168
1169
1170 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1171                                                  const u8 *addr)
1172 {
1173         struct wpa_ssid *ssid, *s;
1174         u8 *n;
1175         size_t i;
1176         int found = 0;
1177         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1178
1179         ssid = wpa_s->current_ssid;
1180         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1181             !ssid->p2p_persistent_group)
1182                 return;
1183
1184         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1185                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1186                         continue;
1187
1188                 if (s->ssid_len == ssid->ssid_len &&
1189                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1190                         break;
1191         }
1192
1193         if (s == NULL)
1194                 return;
1195
1196         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1197                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1198                               ETH_ALEN) != 0)
1199                         continue;
1200
1201                 if (i == s->num_p2p_clients - 1)
1202                         return; /* already the most recent entry */
1203
1204                 /* move the entry to mark it most recent */
1205                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1206                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1207                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1208                 os_memcpy(s->p2p_client_list +
1209                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1210                           ETH_ALEN);
1211                 os_memset(s->p2p_client_list +
1212                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1213                           0xff, ETH_ALEN);
1214                 found = 1;
1215                 break;
1216         }
1217
1218         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1219                 n = os_realloc_array(s->p2p_client_list,
1220                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1221                 if (n == NULL)
1222                         return;
1223                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1224                           ETH_ALEN);
1225                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1226                           0xff, ETH_ALEN);
1227                 s->p2p_client_list = n;
1228                 s->num_p2p_clients++;
1229         } else if (!found && s->p2p_client_list) {
1230                 /* Not enough room for an additional entry - drop the oldest
1231                  * entry */
1232                 os_memmove(s->p2p_client_list,
1233                            s->p2p_client_list + 2 * ETH_ALEN,
1234                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1235                 os_memcpy(s->p2p_client_list +
1236                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1237                           addr, ETH_ALEN);
1238                 os_memset(s->p2p_client_list +
1239                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1240                           0xff, ETH_ALEN);
1241         }
1242
1243         if (p2p_wpa_s->conf->update_config &&
1244             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1245                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1246 }
1247
1248
1249 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1250                                    int go, struct wpa_ssid *ssid, int freq,
1251                                    const u8 *psk, const char *passphrase,
1252                                    const u8 *go_dev_addr, int persistent,
1253                                    const char *extra)
1254 {
1255         const char *ssid_txt;
1256         char psk_txt[65];
1257
1258         if (psk)
1259                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1260         else
1261                 psk_txt[0] = '\0';
1262
1263         if (ssid)
1264                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1265         else
1266                 ssid_txt = "";
1267
1268         if (passphrase && passphrase[0] == '\0')
1269                 passphrase = NULL;
1270
1271         /*
1272          * Include PSK/passphrase only in the control interface message and
1273          * leave it out from the debug log entry.
1274          */
1275         wpa_msg_global_ctrl(wpa_s->p2pdev, MSG_INFO,
1276                             P2P_EVENT_GROUP_STARTED
1277                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1278                             MACSTR "%s%s",
1279                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1280                             psk ? " psk=" : "", psk_txt,
1281                             passphrase ? " passphrase=\"" : "",
1282                             passphrase ? passphrase : "",
1283                             passphrase ? "\"" : "",
1284                             MAC2STR(go_dev_addr),
1285                             persistent ? " [PERSISTENT]" : "", extra);
1286         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1287                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1288                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1289                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1290                    extra);
1291 }
1292
1293
1294 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1295                                            int success, int already_deleted)
1296 {
1297         struct wpa_ssid *ssid;
1298         int client;
1299         int persistent;
1300         u8 go_dev_addr[ETH_ALEN];
1301         int network_id = -1;
1302
1303         /*
1304          * This callback is likely called for the main interface. Update wpa_s
1305          * to use the group interface if a new interface was created for the
1306          * group.
1307          */
1308         if (wpa_s->global->p2p_group_formation)
1309                 wpa_s = wpa_s->global->p2p_group_formation;
1310         if (wpa_s->p2p_go_group_formation_completed) {
1311                 wpa_s->global->p2p_group_formation = NULL;
1312                 wpa_s->p2p_in_provisioning = 0;
1313         }
1314         wpa_s->p2p_in_invitation = 0;
1315         wpa_s->group_formation_reported = 1;
1316
1317         if (!success) {
1318                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1319                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1320                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1321                 if (already_deleted)
1322                         return;
1323                 wpas_p2p_group_delete(wpa_s,
1324                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1325                 return;
1326         }
1327
1328         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1329                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1330
1331         ssid = wpa_s->current_ssid;
1332         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1333                 ssid->mode = WPAS_MODE_P2P_GO;
1334                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1335                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1336         }
1337
1338         persistent = 0;
1339         if (ssid) {
1340                 client = ssid->mode == WPAS_MODE_INFRA;
1341                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1342                         persistent = ssid->p2p_persistent_group;
1343                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1344                                   ETH_ALEN);
1345                 } else
1346                         persistent = wpas_p2p_persistent_group(wpa_s,
1347                                                                go_dev_addr,
1348                                                                ssid->ssid,
1349                                                                ssid->ssid_len);
1350         } else {
1351                 client = wpa_s->p2p_group_interface ==
1352                         P2P_GROUP_INTERFACE_CLIENT;
1353                 os_memset(go_dev_addr, 0, ETH_ALEN);
1354         }
1355
1356         wpa_s->show_group_started = 0;
1357         if (client) {
1358                 /*
1359                  * Indicate event only after successfully completed 4-way
1360                  * handshake, i.e., when the interface is ready for data
1361                  * packets.
1362                  */
1363                 wpa_s->show_group_started = 1;
1364         } else {
1365                 wpas_p2p_group_started(wpa_s, 1, ssid,
1366                                        ssid ? ssid->frequency : 0,
1367                                        ssid && ssid->passphrase == NULL &&
1368                                        ssid->psk_set ? ssid->psk : NULL,
1369                                        ssid ? ssid->passphrase : NULL,
1370                                        go_dev_addr, persistent, "");
1371                 wpas_p2p_cross_connect_setup(wpa_s);
1372                 wpas_p2p_set_group_idle_timeout(wpa_s);
1373         }
1374
1375         if (persistent)
1376                 network_id = wpas_p2p_store_persistent_group(wpa_s->p2pdev,
1377                                                              ssid, go_dev_addr);
1378         else {
1379                 os_free(wpa_s->global->add_psk);
1380                 wpa_s->global->add_psk = NULL;
1381         }
1382         if (network_id < 0 && ssid)
1383                 network_id = ssid->id;
1384         if (!client) {
1385                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1386                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1387         }
1388 }
1389
1390
1391 struct send_action_work {
1392         unsigned int freq;
1393         u8 dst[ETH_ALEN];
1394         u8 src[ETH_ALEN];
1395         u8 bssid[ETH_ALEN];
1396         size_t len;
1397         unsigned int wait_time;
1398         u8 buf[0];
1399 };
1400
1401
1402 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s)
1403 {
1404         struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx;
1405
1406         wpa_printf(MSG_DEBUG,
1407                    "P2P: Free Action frame radio work @%p (freq=%u dst="
1408                    MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)",
1409                    wpa_s->p2p_send_action_work, awork->freq,
1410                    MAC2STR(awork->dst), MAC2STR(awork->src),
1411                    MAC2STR(awork->bssid), awork->wait_time);
1412         wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame",
1413                     awork->buf, awork->len);
1414         os_free(awork);
1415         wpa_s->p2p_send_action_work->ctx = NULL;
1416         radio_work_done(wpa_s->p2p_send_action_work);
1417         wpa_s->p2p_send_action_work = NULL;
1418 }
1419
1420
1421 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1422                                               void *timeout_ctx)
1423 {
1424         struct wpa_supplicant *wpa_s = eloop_ctx;
1425
1426         if (!wpa_s->p2p_send_action_work)
1427                 return;
1428
1429         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1430         wpas_p2p_free_send_action_work(wpa_s);
1431 }
1432
1433
1434 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1435 {
1436         if (wpa_s->p2p_send_action_work) {
1437                 struct send_action_work *awork;
1438
1439                 awork = wpa_s->p2p_send_action_work->ctx;
1440                 wpa_printf(MSG_DEBUG,
1441                            "P2P: Clear Action TX work @%p (wait_time=%u)",
1442                            wpa_s->p2p_send_action_work, awork->wait_time);
1443                 if (awork->wait_time == 0) {
1444                         wpas_p2p_free_send_action_work(wpa_s);
1445                 } else {
1446                         /*
1447                          * In theory, this should not be needed, but number of
1448                          * places in the P2P code is still using non-zero wait
1449                          * time for the last Action frame in the sequence and
1450                          * some of these do not call send_action_done().
1451                          */
1452                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1453                                              wpa_s, NULL);
1454                         eloop_register_timeout(
1455                                 0, awork->wait_time * 1000,
1456                                 wpas_p2p_send_action_work_timeout,
1457                                 wpa_s, NULL);
1458                 }
1459         }
1460 }
1461
1462
1463 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1464                                            unsigned int freq,
1465                                            const u8 *dst, const u8 *src,
1466                                            const u8 *bssid,
1467                                            const u8 *data, size_t data_len,
1468                                            enum offchannel_send_action_result
1469                                            result)
1470 {
1471         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1472
1473         wpas_p2p_action_tx_clear(wpa_s);
1474
1475         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1476                 return;
1477
1478         switch (result) {
1479         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1480                 res = P2P_SEND_ACTION_SUCCESS;
1481                 break;
1482         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1483                 res = P2P_SEND_ACTION_NO_ACK;
1484                 break;
1485         case OFFCHANNEL_SEND_ACTION_FAILED:
1486                 res = P2P_SEND_ACTION_FAILED;
1487                 break;
1488         }
1489
1490         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1491
1492         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1493             wpa_s->pending_pd_before_join &&
1494             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1495              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1496             wpa_s->p2p_fallback_to_go_neg) {
1497                 wpa_s->pending_pd_before_join = 0;
1498                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1499                         "during p2p_connect-auto");
1500                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
1501                                P2P_EVENT_FALLBACK_TO_GO_NEG
1502                                "reason=no-ACK-to-PD-Req");
1503                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1504                 return;
1505         }
1506 }
1507
1508
1509 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1510 {
1511         struct wpa_supplicant *wpa_s = work->wpa_s;
1512         struct send_action_work *awork = work->ctx;
1513
1514         if (deinit) {
1515                 if (work->started) {
1516                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1517                                              wpa_s, NULL);
1518                         wpa_s->p2p_send_action_work = NULL;
1519                         offchannel_send_action_done(wpa_s);
1520                 }
1521                 os_free(awork);
1522                 return;
1523         }
1524
1525         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1526                                    awork->bssid, awork->buf, awork->len,
1527                                    awork->wait_time,
1528                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1529                 os_free(awork);
1530                 radio_work_done(work);
1531                 return;
1532         }
1533         wpa_s->p2p_send_action_work = work;
1534 }
1535
1536
1537 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1538                                  unsigned int freq, const u8 *dst,
1539                                  const u8 *src, const u8 *bssid, const u8 *buf,
1540                                  size_t len, unsigned int wait_time)
1541 {
1542         struct send_action_work *awork;
1543
1544         if (wpa_s->p2p_send_action_work) {
1545                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1546                 return -1;
1547         }
1548
1549         awork = os_zalloc(sizeof(*awork) + len);
1550         if (awork == NULL)
1551                 return -1;
1552
1553         awork->freq = freq;
1554         os_memcpy(awork->dst, dst, ETH_ALEN);
1555         os_memcpy(awork->src, src, ETH_ALEN);
1556         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1557         awork->len = len;
1558         awork->wait_time = wait_time;
1559         os_memcpy(awork->buf, buf, len);
1560
1561         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1562                            wpas_send_action_cb, awork) < 0) {
1563                 os_free(awork);
1564                 return -1;
1565         }
1566
1567         return 0;
1568 }
1569
1570
1571 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1572                             const u8 *src, const u8 *bssid, const u8 *buf,
1573                             size_t len, unsigned int wait_time)
1574 {
1575         struct wpa_supplicant *wpa_s = ctx;
1576         int listen_freq = -1, send_freq = -1;
1577
1578         if (wpa_s->p2p_listen_work)
1579                 listen_freq = wpa_s->p2p_listen_work->freq;
1580         if (wpa_s->p2p_send_action_work)
1581                 send_freq = wpa_s->p2p_send_action_work->freq;
1582         if (listen_freq != (int) freq && send_freq != (int) freq) {
1583                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1584                            listen_freq, send_freq);
1585                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1586                                              len, wait_time);
1587         }
1588
1589         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1590         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1591                                       wait_time,
1592                                       wpas_p2p_send_action_tx_status, 1);
1593 }
1594
1595
1596 static void wpas_send_action_done(void *ctx)
1597 {
1598         struct wpa_supplicant *wpa_s = ctx;
1599
1600         if (wpa_s->p2p_send_action_work) {
1601                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1602                                      wpa_s, NULL);
1603                 os_free(wpa_s->p2p_send_action_work->ctx);
1604                 radio_work_done(wpa_s->p2p_send_action_work);
1605                 wpa_s->p2p_send_action_work = NULL;
1606         }
1607
1608         offchannel_send_action_done(wpa_s);
1609 }
1610
1611
1612 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1613                                     struct p2p_go_neg_results *params)
1614 {
1615         if (wpa_s->go_params == NULL) {
1616                 wpa_s->go_params = os_malloc(sizeof(*params));
1617                 if (wpa_s->go_params == NULL)
1618                         return -1;
1619         }
1620         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1621         return 0;
1622 }
1623
1624
1625 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1626                                     struct p2p_go_neg_results *res)
1627 {
1628         wpa_s->group_formation_reported = 0;
1629         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1630                    " dev_addr " MACSTR " wps_method %d",
1631                    MAC2STR(res->peer_interface_addr),
1632                    MAC2STR(res->peer_device_addr), res->wps_method);
1633         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1634                           res->ssid, res->ssid_len);
1635         wpa_supplicant_ap_deinit(wpa_s);
1636         wpas_copy_go_neg_results(wpa_s, res);
1637         if (res->wps_method == WPS_PBC) {
1638                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1639 #ifdef CONFIG_WPS_NFC
1640         } else if (res->wps_method == WPS_NFC) {
1641                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1642                                    res->peer_interface_addr,
1643                                    wpa_s->p2pdev->p2p_oob_dev_pw,
1644                                    wpa_s->p2pdev->p2p_oob_dev_pw_id, 1,
1645                                    wpa_s->p2pdev->p2p_oob_dev_pw_id ==
1646                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1647                                    wpa_s->p2pdev->p2p_peer_oob_pubkey_hash :
1648                                    NULL,
1649                                    NULL, 0, 0);
1650 #endif /* CONFIG_WPS_NFC */
1651         } else {
1652                 u16 dev_pw_id = DEV_PW_DEFAULT;
1653                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1654                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1655                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1656                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1657                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1658                                    wpa_s->p2p_pin, 1, dev_pw_id);
1659         }
1660 }
1661
1662
1663 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1664                                   struct wpa_ssid *ssid)
1665 {
1666         struct wpa_ssid *persistent;
1667         struct psk_list_entry *psk;
1668         struct hostapd_data *hapd;
1669
1670         if (!wpa_s->ap_iface)
1671                 return;
1672
1673         persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
1674                                              ssid->ssid_len);
1675         if (persistent == NULL)
1676                 return;
1677
1678         hapd = wpa_s->ap_iface->bss[0];
1679
1680         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1681                          list) {
1682                 struct hostapd_wpa_psk *hpsk;
1683
1684                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1685                         MACSTR " psk=%d",
1686                         MAC2STR(psk->addr), psk->p2p);
1687                 hpsk = os_zalloc(sizeof(*hpsk));
1688                 if (hpsk == NULL)
1689                         break;
1690                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1691                 if (psk->p2p)
1692                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1693                 else
1694                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1695                 hpsk->next = hapd->conf->ssid.wpa_psk;
1696                 hapd->conf->ssid.wpa_psk = hpsk;
1697         }
1698 }
1699
1700
1701 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1702 {
1703         unsigned int i;
1704
1705         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1706                 wpa_s->p2p_group_common_freqs_num);
1707
1708         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1709                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1710                         i, wpa_s->p2p_group_common_freqs[i]);
1711 }
1712
1713
1714 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1715                                            struct p2p_go_neg_results *params)
1716 {
1717         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1718
1719         wpa_s->p2p_group_common_freqs_num = 0;
1720         os_free(wpa_s->p2p_group_common_freqs);
1721         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1722         if (!wpa_s->p2p_group_common_freqs)
1723                 return;
1724
1725         for (i = 0; i < len; i++) {
1726                 if (!wpa_s->go_params->freq_list[i])
1727                         break;
1728                 wpa_s->p2p_group_common_freqs[i] =
1729                         wpa_s->go_params->freq_list[i];
1730         }
1731         wpa_s->p2p_group_common_freqs_num = i;
1732 }
1733
1734
1735 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1736 {
1737 #ifndef CONFIG_NO_CONFIG_WRITE
1738         if (wpa_s->p2pdev->conf->update_config &&
1739             wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
1740                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1741 #endif /* CONFIG_NO_CONFIG_WRITE */
1742 }
1743
1744
1745 static void p2p_go_configured(void *ctx, void *data)
1746 {
1747         struct wpa_supplicant *wpa_s = ctx;
1748         struct p2p_go_neg_results *params = data;
1749         struct wpa_ssid *ssid;
1750         int network_id = -1;
1751
1752         wpa_s->ap_configured_cb = NULL;
1753         wpa_s->ap_configured_cb_ctx = NULL;
1754         wpa_s->ap_configured_cb_data = NULL;
1755         if (!wpa_s->go_params) {
1756                 wpa_printf(MSG_ERROR,
1757                            "P2P: p2p_go_configured() called with wpa_s->go_params == NULL");
1758                 return;
1759         }
1760
1761         p2p_go_save_group_common_freqs(wpa_s, params);
1762         p2p_go_dump_common_freqs(wpa_s);
1763
1764         ssid = wpa_s->current_ssid;
1765         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1766                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1767                 if (wpa_s->global->p2p_group_formation == wpa_s)
1768                         wpa_s->global->p2p_group_formation = NULL;
1769                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1770                                        params->passphrase[0] == '\0' ?
1771                                        params->psk : NULL,
1772                                        params->passphrase,
1773                                        wpa_s->global->p2p_dev_addr,
1774                                        params->persistent_group, "");
1775                 wpa_s->group_formation_reported = 1;
1776
1777                 if (wpa_s->p2pdev->p2ps_method_config_any) {
1778                         if (is_zero_ether_addr(wpa_s->p2pdev->p2ps_join_addr)) {
1779                                 wpa_dbg(wpa_s, MSG_DEBUG,
1780                                         "P2PS: Setting default PIN for ANY");
1781                                 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1782                                                           "12345670", NULL, 0,
1783                                                           0);
1784                         } else {
1785                                 wpa_dbg(wpa_s, MSG_DEBUG,
1786                                         "P2PS: Setting default PIN for " MACSTR,
1787                                         MAC2STR(wpa_s->p2pdev->p2ps_join_addr));
1788                                 wpa_supplicant_ap_wps_pin(
1789                                         wpa_s, wpa_s->p2pdev->p2ps_join_addr,
1790                                         "12345670", NULL, 0, 0);
1791                         }
1792                         wpa_s->p2pdev->p2ps_method_config_any = 0;
1793                 }
1794
1795                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1796                 if (params->persistent_group) {
1797                         network_id = wpas_p2p_store_persistent_group(
1798                                 wpa_s->p2pdev, ssid,
1799                                 wpa_s->global->p2p_dev_addr);
1800                         wpas_p2p_add_psk_list(wpa_s, ssid);
1801                 }
1802                 if (network_id < 0)
1803                         network_id = ssid->id;
1804                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1805                 wpas_p2p_cross_connect_setup(wpa_s);
1806                 wpas_p2p_set_group_idle_timeout(wpa_s);
1807
1808                 if (wpa_s->p2p_first_connection_timeout) {
1809                         wpa_dbg(wpa_s, MSG_DEBUG,
1810                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1811                                 wpa_s->p2p_first_connection_timeout);
1812                         wpa_s->p2p_go_group_formation_completed = 0;
1813                         wpa_s->global->p2p_group_formation = wpa_s;
1814                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1815                                              wpa_s->p2pdev, NULL);
1816                         eloop_register_timeout(
1817                                 wpa_s->p2p_first_connection_timeout, 0,
1818                                 wpas_p2p_group_formation_timeout,
1819                                 wpa_s->p2pdev, NULL);
1820                 }
1821
1822                 return;
1823         }
1824
1825         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1826         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1827                                               params->peer_interface_addr)) {
1828                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1829                            "filtering");
1830                 return;
1831         }
1832         if (params->wps_method == WPS_PBC) {
1833                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1834                                           params->peer_device_addr);
1835 #ifdef CONFIG_WPS_NFC
1836         } else if (params->wps_method == WPS_NFC) {
1837                 if (wpa_s->p2pdev->p2p_oob_dev_pw_id !=
1838                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1839                     !wpa_s->p2pdev->p2p_oob_dev_pw) {
1840                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1841                         return;
1842                 }
1843                 wpas_ap_wps_add_nfc_pw(
1844                         wpa_s, wpa_s->p2pdev->p2p_oob_dev_pw_id,
1845                         wpa_s->p2pdev->p2p_oob_dev_pw,
1846                         wpa_s->p2pdev->p2p_peer_oob_pk_hash_known ?
1847                         wpa_s->p2pdev->p2p_peer_oob_pubkey_hash : NULL);
1848 #endif /* CONFIG_WPS_NFC */
1849         } else if (wpa_s->p2p_pin[0])
1850                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1851                                           wpa_s->p2p_pin, NULL, 0, 0);
1852         os_free(wpa_s->go_params);
1853         wpa_s->go_params = NULL;
1854 }
1855
1856
1857 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1858                               struct p2p_go_neg_results *params,
1859                               int group_formation)
1860 {
1861         struct wpa_ssid *ssid;
1862
1863         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1864         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1865                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1866                         "results");
1867                 return;
1868         }
1869
1870         ssid = wpa_config_add_network(wpa_s->conf);
1871         if (ssid == NULL) {
1872                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1873                 return;
1874         }
1875
1876         wpa_s->show_group_started = 0;
1877         wpa_s->p2p_go_group_formation_completed = 0;
1878         wpa_s->group_formation_reported = 0;
1879         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1880
1881         wpa_config_set_network_defaults(ssid);
1882         ssid->temporary = 1;
1883         ssid->p2p_group = 1;
1884         ssid->p2p_persistent_group = params->persistent_group;
1885         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1886                 WPAS_MODE_P2P_GO;
1887         ssid->frequency = params->freq;
1888         ssid->ht40 = params->ht40;
1889         ssid->vht = params->vht;
1890         ssid->max_oper_chwidth = params->max_oper_chwidth;
1891         ssid->vht_center_freq2 = params->vht_center_freq2;
1892         ssid->ssid = os_zalloc(params->ssid_len + 1);
1893         if (ssid->ssid) {
1894                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1895                 ssid->ssid_len = params->ssid_len;
1896         }
1897         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1898         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1899         ssid->proto = WPA_PROTO_RSN;
1900         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1901         ssid->group_cipher = WPA_CIPHER_CCMP;
1902         if (params->freq > 56160) {
1903                 /*
1904                  * Enable GCMP instead of CCMP as pairwise_cipher and
1905                  * group_cipher in 60 GHz.
1906                  */
1907                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1908                 ssid->group_cipher = WPA_CIPHER_GCMP;
1909                 /* P2P GO in 60 GHz is always a PCP (PBSS) */
1910                 ssid->pbss = 1;
1911         }
1912         if (os_strlen(params->passphrase) > 0) {
1913                 ssid->passphrase = os_strdup(params->passphrase);
1914                 if (ssid->passphrase == NULL) {
1915                         wpa_msg_global(wpa_s, MSG_ERROR,
1916                                        "P2P: Failed to copy passphrase for GO");
1917                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1918                         return;
1919                 }
1920         } else
1921                 ssid->passphrase = NULL;
1922         ssid->psk_set = params->psk_set;
1923         if (ssid->psk_set)
1924                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1925         else if (ssid->passphrase)
1926                 wpa_config_update_psk(ssid);
1927         ssid->ap_max_inactivity = wpa_s->p2pdev->conf->p2p_go_max_inactivity;
1928
1929         wpa_s->ap_configured_cb = p2p_go_configured;
1930         wpa_s->ap_configured_cb_ctx = wpa_s;
1931         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1932         wpa_s->scan_req = NORMAL_SCAN_REQ;
1933         wpa_s->connect_without_scan = ssid;
1934         wpa_s->reassociate = 1;
1935         wpa_s->disconnected = 0;
1936         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1937                 "start GO)");
1938         wpa_supplicant_req_scan(wpa_s, 0, 0);
1939 }
1940
1941
1942 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1943                                   const struct wpa_supplicant *src)
1944 {
1945         struct wpa_config *d;
1946         const struct wpa_config *s;
1947
1948         d = dst->conf;
1949         s = src->conf;
1950
1951 #define C(n) if (s->n) d->n = os_strdup(s->n)
1952         C(device_name);
1953         C(manufacturer);
1954         C(model_name);
1955         C(model_number);
1956         C(serial_number);
1957         C(config_methods);
1958 #undef C
1959
1960         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1961         os_memcpy(d->sec_device_type, s->sec_device_type,
1962                   sizeof(d->sec_device_type));
1963         d->num_sec_device_types = s->num_sec_device_types;
1964
1965         d->p2p_group_idle = s->p2p_group_idle;
1966         d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
1967         d->p2p_intra_bss = s->p2p_intra_bss;
1968         d->persistent_reconnect = s->persistent_reconnect;
1969         d->max_num_sta = s->max_num_sta;
1970         d->pbc_in_m1 = s->pbc_in_m1;
1971         d->ignore_old_scan_res = s->ignore_old_scan_res;
1972         d->beacon_int = s->beacon_int;
1973         d->dtim_period = s->dtim_period;
1974         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1975         d->disassoc_low_ack = s->disassoc_low_ack;
1976         d->disable_scan_offload = s->disable_scan_offload;
1977         d->passive_scan = s->passive_scan;
1978
1979         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1980                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1981                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1982         }
1983         d->p2p_cli_probe = s->p2p_cli_probe;
1984 }
1985
1986
1987 static void wpas_p2p_clone_config_dh(struct wpa_supplicant *dst,
1988                                      const struct wpa_supplicant *src)
1989 {
1990         struct wpa_config *d;
1991         const struct wpa_config *s;
1992
1993         d = dst->conf;
1994         s = src->conf;
1995
1996         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey &&
1997             !d->wps_nfc_dh_privkey && !d->wps_nfc_dh_pubkey) {
1998                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1999                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
2000         }
2001 }
2002
2003
2004 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
2005                                       char *ifname, size_t len)
2006 {
2007         char *ifname_ptr = wpa_s->ifname;
2008
2009         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
2010                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
2011                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
2012         }
2013
2014         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
2015         if (os_strlen(ifname) >= IFNAMSIZ &&
2016             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
2017                 int res;
2018
2019                 /* Try to avoid going over the IFNAMSIZ length limit */
2020                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
2021                 if (os_snprintf_error(len, res) && len)
2022                         ifname[len - 1] = '\0';
2023         }
2024 }
2025
2026
2027 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
2028                                         enum wpa_driver_if_type type)
2029 {
2030         char ifname[120], force_ifname[120];
2031
2032         if (wpa_s->pending_interface_name[0]) {
2033                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
2034                            "- skip creation of a new one");
2035                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
2036                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
2037                                    "unknown?! ifname='%s'",
2038                                    wpa_s->pending_interface_name);
2039                         return -1;
2040                 }
2041                 return 0;
2042         }
2043
2044         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
2045         force_ifname[0] = '\0';
2046
2047         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
2048                    ifname);
2049         wpa_s->p2p_group_idx++;
2050
2051         wpa_s->pending_interface_type = type;
2052         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
2053                            wpa_s->pending_interface_addr, NULL) < 0) {
2054                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
2055                            "interface");
2056                 return -1;
2057         }
2058
2059         if (force_ifname[0]) {
2060                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2061                            force_ifname);
2062                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2063                            sizeof(wpa_s->pending_interface_name));
2064         } else
2065                 os_strlcpy(wpa_s->pending_interface_name, ifname,
2066                            sizeof(wpa_s->pending_interface_name));
2067         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2068                    MACSTR, wpa_s->pending_interface_name,
2069                    MAC2STR(wpa_s->pending_interface_addr));
2070
2071         return 0;
2072 }
2073
2074
2075 static void wpas_p2p_remove_pending_group_interface(
2076         struct wpa_supplicant *wpa_s)
2077 {
2078         if (!wpa_s->pending_interface_name[0] ||
2079             is_zero_ether_addr(wpa_s->pending_interface_addr))
2080                 return; /* No pending virtual interface */
2081
2082         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2083                    wpa_s->pending_interface_name);
2084         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2085                           wpa_s->pending_interface_name);
2086         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2087         wpa_s->pending_interface_name[0] = '\0';
2088         wpa_s->global->pending_group_iface_for_p2ps = 0;
2089 }
2090
2091
2092 static struct wpa_supplicant *
2093 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2094 {
2095         struct wpa_interface iface;
2096         struct wpa_supplicant *group_wpa_s;
2097
2098         if (!wpa_s->pending_interface_name[0]) {
2099                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2100                 if (!wpas_p2p_create_iface(wpa_s))
2101                         return NULL;
2102                 /*
2103                  * Something has forced us to remove the pending interface; try
2104                  * to create a new one and hope for the best that we will get
2105                  * the same local address.
2106                  */
2107                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2108                                                  WPA_IF_P2P_CLIENT) < 0)
2109                         return NULL;
2110         }
2111
2112         os_memset(&iface, 0, sizeof(iface));
2113         iface.ifname = wpa_s->pending_interface_name;
2114         iface.driver = wpa_s->driver->name;
2115         if (wpa_s->conf->ctrl_interface == NULL &&
2116             wpa_s->parent != wpa_s &&
2117             wpa_s->p2p_mgmt &&
2118             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2119                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2120         else
2121                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2122         iface.driver_param = wpa_s->conf->driver_param;
2123         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2124         if (group_wpa_s == NULL) {
2125                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2126                            "wpa_supplicant interface");
2127                 return NULL;
2128         }
2129         wpa_s->pending_interface_name[0] = '\0';
2130         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2131                 P2P_GROUP_INTERFACE_CLIENT;
2132         wpa_s->global->p2p_group_formation = group_wpa_s;
2133         wpa_s->global->pending_group_iface_for_p2ps = 0;
2134
2135         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2136
2137         return group_wpa_s;
2138 }
2139
2140
2141 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2142                                              void *timeout_ctx)
2143 {
2144         struct wpa_supplicant *wpa_s = eloop_ctx;
2145         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2146         wpas_p2p_group_formation_failed(wpa_s, 0);
2147 }
2148
2149
2150 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2151                                             int already_deleted)
2152 {
2153         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2154                              wpa_s->p2pdev, NULL);
2155         if (wpa_s->global->p2p)
2156                 p2p_group_formation_failed(wpa_s->global->p2p);
2157         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2158 }
2159
2160
2161 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2162 {
2163         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2164         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2165                              wpa_s->p2pdev, NULL);
2166         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2167                                wpa_s->p2pdev, NULL);
2168         wpa_s->global->p2p_fail_on_wps_complete = 0;
2169 }
2170
2171
2172 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2173 {
2174         if (wpa_s->global->p2p_group_formation != wpa_s)
2175                 return;
2176         /* Speed up group formation timeout since this cannot succeed */
2177         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2178                              wpa_s->p2pdev, NULL);
2179         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2180                                wpa_s->p2pdev, NULL);
2181 }
2182
2183
2184 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2185 {
2186         struct wpa_supplicant *wpa_s = ctx;
2187         struct wpa_supplicant *group_wpa_s;
2188
2189         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2190                 wpa_drv_cancel_remain_on_channel(wpa_s);
2191                 wpa_s->off_channel_freq = 0;
2192                 wpa_s->roc_waiting_drv_freq = 0;
2193         }
2194
2195         if (res->status) {
2196                 wpa_msg_global(wpa_s, MSG_INFO,
2197                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2198                                res->status);
2199                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2200                 wpas_p2p_remove_pending_group_interface(wpa_s);
2201                 return;
2202         }
2203
2204         if (!res->role_go) {
2205                 /* Inform driver of the operating channel of GO. */
2206                 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2207         }
2208
2209         if (wpa_s->p2p_go_ht40)
2210                 res->ht40 = 1;
2211         if (wpa_s->p2p_go_vht)
2212                 res->vht = 1;
2213         res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth;
2214         res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2;
2215
2216         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2217                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2218                        " wps_method=%s",
2219                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2220                        MAC2STR(res->peer_device_addr),
2221                        MAC2STR(res->peer_interface_addr),
2222                        p2p_wps_method_text(res->wps_method));
2223         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2224
2225         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2226                 struct wpa_ssid *ssid;
2227                 ssid = wpa_config_get_network(wpa_s->conf,
2228                                               wpa_s->p2p_persistent_id);
2229                 if (ssid && ssid->disabled == 2 &&
2230                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2231                         size_t len = os_strlen(ssid->passphrase);
2232                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2233                                    "on requested persistent group");
2234                         os_memcpy(res->passphrase, ssid->passphrase, len);
2235                         res->passphrase[len] = '\0';
2236                 }
2237         }
2238
2239         if (wpa_s->create_p2p_iface) {
2240                 group_wpa_s =
2241                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2242                 if (group_wpa_s == NULL) {
2243                         wpas_p2p_remove_pending_group_interface(wpa_s);
2244                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2245                                              wpa_s, NULL);
2246                         wpas_p2p_group_formation_failed(wpa_s, 1);
2247                         return;
2248                 }
2249                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2250                 wpa_s->pending_interface_name[0] = '\0';
2251         } else {
2252                 group_wpa_s = wpa_s->parent;
2253                 wpa_s->global->p2p_group_formation = group_wpa_s;
2254                 if (group_wpa_s != wpa_s)
2255                         wpas_p2p_clone_config_dh(group_wpa_s, wpa_s);
2256         }
2257
2258         group_wpa_s->p2p_in_provisioning = 1;
2259         group_wpa_s->p2pdev = wpa_s;
2260         if (group_wpa_s != wpa_s) {
2261                 os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2262                           sizeof(group_wpa_s->p2p_pin));
2263                 group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2264         }
2265         if (res->role_go) {
2266                 wpas_start_wps_go(group_wpa_s, res, 1);
2267         } else {
2268                 os_get_reltime(&group_wpa_s->scan_min_time);
2269                 wpas_start_wps_enrollee(group_wpa_s, res);
2270         }
2271
2272         wpa_s->p2p_long_listen = 0;
2273         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2274
2275         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2276         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2277                                (res->peer_config_timeout % 100) * 10000,
2278                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2279 }
2280
2281
2282 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2283                                u8 go_intent)
2284 {
2285         struct wpa_supplicant *wpa_s = ctx;
2286         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2287                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2288                        dev_passwd_id, go_intent);
2289
2290         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2291 }
2292
2293
2294 static void wpas_dev_found(void *ctx, const u8 *addr,
2295                            const struct p2p_peer_info *info,
2296                            int new_device)
2297 {
2298 #ifndef CONFIG_NO_STDOUT_DEBUG
2299         struct wpa_supplicant *wpa_s = ctx;
2300         char devtype[WPS_DEV_TYPE_BUFSIZE];
2301         char *wfd_dev_info_hex = NULL;
2302
2303 #ifdef CONFIG_WIFI_DISPLAY
2304         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2305                                                     WFD_SUBELEM_DEVICE_INFO);
2306 #endif /* CONFIG_WIFI_DISPLAY */
2307
2308         if (info->p2ps_instance) {
2309                 char str[256];
2310                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2311                 size_t len = wpabuf_len(info->p2ps_instance);
2312
2313                 while (len) {
2314                         u32 id;
2315                         u16 methods;
2316                         u8 str_len;
2317
2318                         if (len < 4 + 2 + 1)
2319                                 break;
2320                         id = WPA_GET_LE32(buf);
2321                         buf += sizeof(u32);
2322                         methods = WPA_GET_BE16(buf);
2323                         buf += sizeof(u16);
2324                         str_len = *buf++;
2325                         if (str_len > len - 4 - 2 - 1)
2326                                 break;
2327                         os_memcpy(str, buf, str_len);
2328                         str[str_len] = '\0';
2329                         buf += str_len;
2330                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2331
2332                         wpa_msg_global(wpa_s, MSG_INFO,
2333                                        P2P_EVENT_DEVICE_FOUND MACSTR
2334                                        " p2p_dev_addr=" MACSTR
2335                                        " pri_dev_type=%s name='%s'"
2336                                        " config_methods=0x%x"
2337                                        " dev_capab=0x%x"
2338                                        " group_capab=0x%x"
2339                                        " adv_id=%x asp_svc=%s%s",
2340                                        MAC2STR(addr),
2341                                        MAC2STR(info->p2p_device_addr),
2342                                        wps_dev_type_bin2str(
2343                                                info->pri_dev_type,
2344                                                devtype, sizeof(devtype)),
2345                                        info->device_name, methods,
2346                                        info->dev_capab, info->group_capab,
2347                                        id, str,
2348                                        info->vendor_elems ?
2349                                        " vendor_elems=1" : "");
2350                 }
2351                 goto done;
2352         }
2353
2354         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2355                        " p2p_dev_addr=" MACSTR
2356                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2357                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2358                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2359                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2360                                             sizeof(devtype)),
2361                        info->device_name, info->config_methods,
2362                        info->dev_capab, info->group_capab,
2363                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2364                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2365                        info->vendor_elems ? " vendor_elems=1" : "",
2366                        new_device);
2367
2368 done:
2369         os_free(wfd_dev_info_hex);
2370 #endif /* CONFIG_NO_STDOUT_DEBUG */
2371
2372         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2373 }
2374
2375
2376 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2377 {
2378         struct wpa_supplicant *wpa_s = ctx;
2379
2380         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2381                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2382
2383         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2384 }
2385
2386
2387 static void wpas_find_stopped(void *ctx)
2388 {
2389         struct wpa_supplicant *wpa_s = ctx;
2390         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2391         wpas_notify_p2p_find_stopped(wpa_s);
2392 }
2393
2394
2395 struct wpas_p2p_listen_work {
2396         unsigned int freq;
2397         unsigned int duration;
2398         struct wpabuf *probe_resp_ie;
2399 };
2400
2401
2402 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2403 {
2404         if (lwork == NULL)
2405                 return;
2406         wpabuf_free(lwork->probe_resp_ie);
2407         os_free(lwork);
2408 }
2409
2410
2411 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2412 {
2413         struct wpas_p2p_listen_work *lwork;
2414
2415         if (!wpa_s->p2p_listen_work)
2416                 return;
2417
2418         lwork = wpa_s->p2p_listen_work->ctx;
2419         wpas_p2p_listen_work_free(lwork);
2420         radio_work_done(wpa_s->p2p_listen_work);
2421         wpa_s->p2p_listen_work = NULL;
2422 }
2423
2424
2425 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2426 {
2427         struct wpa_supplicant *wpa_s = work->wpa_s;
2428         struct wpas_p2p_listen_work *lwork = work->ctx;
2429         unsigned int duration;
2430
2431         if (deinit) {
2432                 if (work->started) {
2433                         wpa_s->p2p_listen_work = NULL;
2434                         wpas_stop_listen(wpa_s);
2435                 }
2436                 wpas_p2p_listen_work_free(lwork);
2437                 return;
2438         }
2439
2440         wpa_s->p2p_listen_work = work;
2441
2442         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2443
2444         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2445                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2446                            "report received Probe Request frames");
2447                 wpas_p2p_listen_work_done(wpa_s);
2448                 return;
2449         }
2450
2451         wpa_s->pending_listen_freq = lwork->freq;
2452         wpa_s->pending_listen_duration = lwork->duration;
2453
2454         duration = lwork->duration;
2455 #ifdef CONFIG_TESTING_OPTIONS
2456         if (wpa_s->extra_roc_dur) {
2457                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2458                            duration, duration + wpa_s->extra_roc_dur);
2459                 duration += wpa_s->extra_roc_dur;
2460         }
2461 #endif /* CONFIG_TESTING_OPTIONS */
2462
2463         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2464                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2465                            "to remain on channel (%u MHz) for Listen "
2466                            "state", lwork->freq);
2467                 wpas_p2p_listen_work_done(wpa_s);
2468                 wpa_s->pending_listen_freq = 0;
2469                 return;
2470         }
2471         wpa_s->off_channel_freq = 0;
2472         wpa_s->roc_waiting_drv_freq = lwork->freq;
2473 }
2474
2475
2476 static int wpas_start_listen(void *ctx, unsigned int freq,
2477                              unsigned int duration,
2478                              const struct wpabuf *probe_resp_ie)
2479 {
2480         struct wpa_supplicant *wpa_s = ctx;
2481         struct wpas_p2p_listen_work *lwork;
2482
2483         if (wpa_s->p2p_listen_work) {
2484                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2485                 return -1;
2486         }
2487
2488         lwork = os_zalloc(sizeof(*lwork));
2489         if (lwork == NULL)
2490                 return -1;
2491         lwork->freq = freq;
2492         lwork->duration = duration;
2493         if (probe_resp_ie) {
2494                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2495                 if (lwork->probe_resp_ie == NULL) {
2496                         wpas_p2p_listen_work_free(lwork);
2497                         return -1;
2498                 }
2499         }
2500
2501         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2502                            lwork) < 0) {
2503                 wpas_p2p_listen_work_free(lwork);
2504                 return -1;
2505         }
2506
2507         return 0;
2508 }
2509
2510
2511 static void wpas_stop_listen(void *ctx)
2512 {
2513         struct wpa_supplicant *wpa_s = ctx;
2514         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2515                 wpa_drv_cancel_remain_on_channel(wpa_s);
2516                 wpa_s->off_channel_freq = 0;
2517                 wpa_s->roc_waiting_drv_freq = 0;
2518         }
2519         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2520
2521         /*
2522          * Don't cancel Probe Request RX reporting for a connected P2P Client
2523          * handling Probe Request frames.
2524          */
2525         if (!wpa_s->p2p_cli_probe)
2526                 wpa_drv_probe_req_report(wpa_s, 0);
2527
2528         wpas_p2p_listen_work_done(wpa_s);
2529 }
2530
2531
2532 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2533                                 unsigned int freq)
2534 {
2535         struct wpa_supplicant *wpa_s = ctx;
2536         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2537                                  freq);
2538 }
2539
2540
2541 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2542                                          const u8 *peer, const char *params,
2543                                          unsigned int generated_pin)
2544 {
2545         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2546                        " %08d%s", MAC2STR(peer), generated_pin, params);
2547 }
2548
2549
2550 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2551                                         const u8 *peer, const char *params)
2552 {
2553         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2554                        "%s", MAC2STR(peer), params);
2555 }
2556
2557
2558 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2559                                const u8 *dev_addr, const u8 *pri_dev_type,
2560                                const char *dev_name, u16 supp_config_methods,
2561                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2562                                size_t group_id_len)
2563 {
2564         struct wpa_supplicant *wpa_s = ctx;
2565         char devtype[WPS_DEV_TYPE_BUFSIZE];
2566         char params[300];
2567         u8 empty_dev_type[8];
2568         unsigned int generated_pin = 0;
2569         struct wpa_supplicant *group = NULL;
2570         int res;
2571
2572         if (group_id) {
2573                 for (group = wpa_s->global->ifaces; group; group = group->next)
2574                 {
2575                         struct wpa_ssid *s = group->current_ssid;
2576                         if (s != NULL &&
2577                             s->mode == WPAS_MODE_P2P_GO &&
2578                             group_id_len - ETH_ALEN == s->ssid_len &&
2579                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2580                                       s->ssid_len) == 0)
2581                                 break;
2582                 }
2583         }
2584
2585         if (pri_dev_type == NULL) {
2586                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2587                 pri_dev_type = empty_dev_type;
2588         }
2589         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2590                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2591                           "dev_capab=0x%x group_capab=0x%x%s%s",
2592                           MAC2STR(dev_addr),
2593                           wps_dev_type_bin2str(pri_dev_type, devtype,
2594                                                sizeof(devtype)),
2595                           dev_name, supp_config_methods, dev_capab, group_capab,
2596                           group ? " group=" : "",
2597                           group ? group->ifname : "");
2598         if (os_snprintf_error(sizeof(params), res))
2599                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2600         params[sizeof(params) - 1] = '\0';
2601
2602         if (config_methods & WPS_CONFIG_DISPLAY) {
2603                 if (wps_generate_pin(&generated_pin) < 0) {
2604                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2605                         wpas_notify_p2p_provision_discovery(
2606                                 wpa_s, peer, 0 /* response */,
2607                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2608                         return;
2609                 }
2610                 wpas_prov_disc_local_display(wpa_s, peer, params,
2611                                              generated_pin);
2612         } else if (config_methods & WPS_CONFIG_KEYPAD)
2613                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2614         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2615                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2616                                MACSTR "%s", MAC2STR(peer), params);
2617
2618         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2619                                             P2P_PROV_DISC_SUCCESS,
2620                                             config_methods, generated_pin);
2621 }
2622
2623
2624 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2625 {
2626         struct wpa_supplicant *wpa_s = ctx;
2627         unsigned int generated_pin = 0;
2628         char params[20];
2629
2630         if (wpa_s->pending_pd_before_join &&
2631             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2632              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2633                 wpa_s->pending_pd_before_join = 0;
2634                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2635                            "join-existing-group operation");
2636                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2637                 return;
2638         }
2639
2640         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2641             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2642                 int res;
2643
2644                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2645                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2646                 if (os_snprintf_error(sizeof(params), res))
2647                         params[sizeof(params) - 1] = '\0';
2648         } else
2649                 params[0] = '\0';
2650
2651         if (config_methods & WPS_CONFIG_DISPLAY)
2652                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2653         else if (config_methods & WPS_CONFIG_KEYPAD) {
2654                 if (wps_generate_pin(&generated_pin) < 0) {
2655                         wpa_printf(MSG_DEBUG, "P2P: Could not generate PIN");
2656                         wpas_notify_p2p_provision_discovery(
2657                                 wpa_s, peer, 0 /* response */,
2658                                 P2P_PROV_DISC_INFO_UNAVAILABLE, 0, 0);
2659                         return;
2660                 }
2661                 wpas_prov_disc_local_display(wpa_s, peer, params,
2662                                              generated_pin);
2663         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2664                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2665                                MACSTR "%s", MAC2STR(peer), params);
2666
2667         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2668                                             P2P_PROV_DISC_SUCCESS,
2669                                             config_methods, generated_pin);
2670 }
2671
2672
2673 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2674                                 enum p2p_prov_disc_status status,
2675                                 u32 adv_id, const u8 *adv_mac,
2676                                 const char *deferred_session_resp)
2677 {
2678         struct wpa_supplicant *wpa_s = ctx;
2679
2680         if (wpa_s->p2p_fallback_to_go_neg) {
2681                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2682                         "failed - fall back to GO Negotiation");
2683                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
2684                                P2P_EVENT_FALLBACK_TO_GO_NEG
2685                                "reason=PD-failed");
2686                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2687                 return;
2688         }
2689
2690         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2691                 wpa_s->pending_pd_before_join = 0;
2692                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2693                            "join-existing-group operation (no ACK for PD "
2694                            "Req attempts)");
2695                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2696                 return;
2697         }
2698
2699         if (adv_id && adv_mac && deferred_session_resp) {
2700                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2701                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2702                                " deferred_session_resp='%s'",
2703                                MAC2STR(peer), status, adv_id,
2704                                deferred_session_resp);
2705         } else if (adv_id && adv_mac) {
2706                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2707                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2708                                MAC2STR(peer), status, adv_id);
2709         } else {
2710                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2711                                " p2p_dev_addr=" MACSTR " status=%d",
2712                                MAC2STR(peer), status);
2713         }
2714
2715         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2716                                             status, 0, 0);
2717 }
2718
2719
2720 static int freq_included(struct wpa_supplicant *wpa_s,
2721                          const struct p2p_channels *channels,
2722                          unsigned int freq)
2723 {
2724         if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2725             wpas_p2p_go_is_peer_freq(wpa_s, freq))
2726                 return 1;
2727         return 0;
2728 }
2729
2730
2731 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2732 {
2733         unsigned int num = P2P_MAX_CHANNELS;
2734         int *common_freqs;
2735         int ret;
2736
2737         p2p_go_dump_common_freqs(wpa_s);
2738         common_freqs = os_calloc(num, sizeof(int));
2739         if (!common_freqs)
2740                 return;
2741
2742         ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2743         if (ret < 0) {
2744                 wpa_dbg(wpa_s, MSG_DEBUG,
2745                         "P2P: Failed to get group common freqs");
2746                 os_free(common_freqs);
2747                 return;
2748         }
2749
2750         os_free(wpa_s->p2p_group_common_freqs);
2751         wpa_s->p2p_group_common_freqs = common_freqs;
2752         wpa_s->p2p_group_common_freqs_num = num;
2753         p2p_go_dump_common_freqs(wpa_s);
2754 }
2755
2756
2757 /*
2758  * Check if the given frequency is one of the possible operating frequencies
2759  * set after the completion of the GO Negotiation.
2760  */
2761 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2762 {
2763         unsigned int i;
2764
2765         p2p_go_dump_common_freqs(wpa_s);
2766
2767         /* assume no restrictions */
2768         if (!wpa_s->p2p_group_common_freqs_num)
2769                 return 1;
2770
2771         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2772                 if (wpa_s->p2p_group_common_freqs[i] == freq)
2773                         return 1;
2774         }
2775         return 0;
2776 }
2777
2778
2779 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2780                                struct sta_info *sta, void *ctx)
2781 {
2782         int *ecsa_support = ctx;
2783
2784         *ecsa_support &= sta->ecsa_supported;
2785
2786         return 0;
2787 }
2788
2789
2790 /* Check if all the peers support eCSA */
2791 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2792 {
2793         int ecsa_support = 1;
2794
2795         ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2796                         &ecsa_support);
2797
2798         return ecsa_support;
2799 }
2800
2801
2802 /**
2803  * Pick the best frequency to use from all the currently used frequencies.
2804  */
2805 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2806                                         struct wpa_used_freq_data *freqs,
2807                                         unsigned int num)
2808 {
2809         unsigned int i, c;
2810
2811         /* find a candidate freq that is supported by P2P */
2812         for (c = 0; c < num; c++)
2813                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2814                         break;
2815
2816         if (c == num)
2817                 return 0;
2818
2819         /* once we have a candidate, try to find a 'better' one */
2820         for (i = c + 1; i < num; i++) {
2821                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2822                         continue;
2823
2824                 /*
2825                  * 1. Infrastructure station interfaces have higher preference.
2826                  * 2. P2P Clients have higher preference.
2827                  * 3. All others.
2828                  */
2829                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2830                         c = i;
2831                         break;
2832                 }
2833
2834                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2835                         c = i;
2836         }
2837         return freqs[c].freq;
2838 }
2839
2840
2841 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2842                                   const u8 *go_dev_addr, const u8 *ssid,
2843                                   size_t ssid_len, int *go, u8 *group_bssid,
2844                                   int *force_freq, int persistent_group,
2845                                   const struct p2p_channels *channels,
2846                                   int dev_pw_id)
2847 {
2848         struct wpa_supplicant *wpa_s = ctx;
2849         struct wpa_ssid *s;
2850         struct wpa_used_freq_data *freqs;
2851         struct wpa_supplicant *grp;
2852         int best_freq;
2853
2854         if (!persistent_group) {
2855                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2856                            " to join an active group (SSID: %s)",
2857                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2858                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2859                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2860                      == 0 ||
2861                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2862                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2863                                    "authorized invitation");
2864                         goto accept_inv;
2865                 }
2866
2867 #ifdef CONFIG_WPS_NFC
2868                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2869                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2870                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2871                         wpa_s->p2p_wps_method = WPS_NFC;
2872                         wpa_s->pending_join_wps_method = WPS_NFC;
2873                         os_memcpy(wpa_s->pending_join_dev_addr,
2874                                   go_dev_addr, ETH_ALEN);
2875                         os_memcpy(wpa_s->pending_join_iface_addr,
2876                                   bssid, ETH_ALEN);
2877                         goto accept_inv;
2878                 }
2879 #endif /* CONFIG_WPS_NFC */
2880
2881                 /*
2882                  * Do not accept the invitation automatically; notify user and
2883                  * request approval.
2884                  */
2885                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2886         }
2887
2888         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2889         if (grp) {
2890                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2891                            "running persistent group");
2892                 if (*go)
2893                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2894                 goto accept_inv;
2895         }
2896
2897         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2898             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2899                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2900                            "invitation to re-invoke a persistent group");
2901                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2902         } else if (!wpa_s->conf->persistent_reconnect)
2903                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2904
2905         for (s = wpa_s->conf->ssid; s; s = s->next) {
2906                 if (s->disabled == 2 &&
2907                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2908                     s->ssid_len == ssid_len &&
2909                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2910                         break;
2911         }
2912
2913         if (!s) {
2914                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2915                            " requested reinvocation of an unknown group",
2916                            MAC2STR(sa));
2917                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2918         }
2919
2920         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2921                 *go = 1;
2922                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2923                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2924                                    "interface is already in use - reject "
2925                                    "invitation");
2926                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2927                 }
2928                 if (wpa_s->p2p_mgmt)
2929                         os_memcpy(group_bssid, wpa_s->parent->own_addr,
2930                                   ETH_ALEN);
2931                 else
2932                         os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2933         } else if (s->mode == WPAS_MODE_P2P_GO) {
2934                 *go = 1;
2935                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2936                 {
2937                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2938                                    "interface address for the group");
2939                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2940                 }
2941                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2942                           ETH_ALEN);
2943         }
2944
2945 accept_inv:
2946         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2947
2948         best_freq = 0;
2949         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2950                           sizeof(struct wpa_used_freq_data));
2951         if (freqs) {
2952                 int num_channels = wpa_s->num_multichan_concurrent;
2953                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2954                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2955                 os_free(freqs);
2956         }
2957
2958         /* Get one of the frequencies currently in use */
2959         if (best_freq > 0) {
2960                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2961                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2962
2963                 if (wpa_s->num_multichan_concurrent < 2 ||
2964                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2965                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2966                         *force_freq = best_freq;
2967                 }
2968         }
2969
2970         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2971             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2972                 if (*go == 0) {
2973                         /* We are the client */
2974                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2975                                    "running a GO but we are capable of MCC, "
2976                                    "figure out the best channel to use");
2977                         *force_freq = 0;
2978                 } else if (!freq_included(wpa_s, channels, *force_freq)) {
2979                         /* We are the GO, and *force_freq is not in the
2980                          * intersection */
2981                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2982                                    "in intersection but we are capable of MCC, "
2983                                    "figure out the best channel to use",
2984                                    *force_freq);
2985                         *force_freq = 0;
2986                 }
2987         }
2988
2989         return P2P_SC_SUCCESS;
2990 }
2991
2992
2993 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2994                                      const u8 *ssid, size_t ssid_len,
2995                                      const u8 *go_dev_addr, u8 status,
2996                                      int op_freq)
2997 {
2998         struct wpa_supplicant *wpa_s = ctx;
2999         struct wpa_ssid *s;
3000
3001         for (s = wpa_s->conf->ssid; s; s = s->next) {
3002                 if (s->disabled == 2 &&
3003                     s->ssid_len == ssid_len &&
3004                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3005                         break;
3006         }
3007
3008         if (status == P2P_SC_SUCCESS) {
3009                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3010                            " was accepted; op_freq=%d MHz, SSID=%s",
3011                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3012                 if (s) {
3013                         int go = s->mode == WPAS_MODE_P2P_GO;
3014                         wpas_p2p_group_add_persistent(
3015                                 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL,
3016                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
3017                                 1);
3018                 } else if (bssid) {
3019                         wpa_s->user_initiated_pd = 0;
3020                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3021                                       wpa_s->p2p_wps_method, 0, op_freq,
3022                                       ssid, ssid_len);
3023                 }
3024                 return;
3025         }
3026
3027         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3028                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3029                            " was rejected (status %u)", MAC2STR(sa), status);
3030                 return;
3031         }
3032
3033         if (!s) {
3034                 if (bssid) {
3035                         wpa_msg_global(wpa_s, MSG_INFO,
3036                                        P2P_EVENT_INVITATION_RECEIVED
3037                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3038                                        " bssid=" MACSTR " unknown-network",
3039                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3040                                        MAC2STR(bssid));
3041                 } else {
3042                         wpa_msg_global(wpa_s, MSG_INFO,
3043                                        P2P_EVENT_INVITATION_RECEIVED
3044                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3045                                        " unknown-network",
3046                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3047                 }
3048                 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3049                                                     bssid, 0, op_freq);
3050                 return;
3051         }
3052
3053         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3054                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3055                                "sa=" MACSTR " persistent=%d freq=%d",
3056                                MAC2STR(sa), s->id, op_freq);
3057         } else {
3058                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3059                                "sa=" MACSTR " persistent=%d",
3060                                MAC2STR(sa), s->id);
3061         }
3062         wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3063                                             s->id, op_freq);
3064 }
3065
3066
3067 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3068                                         struct wpa_ssid *ssid,
3069                                         const u8 *peer, int inv)
3070 {
3071         size_t i;
3072         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3073
3074         if (ssid == NULL)
3075                 return;
3076
3077         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3078                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3079                               ETH_ALEN) == 0)
3080                         break;
3081         }
3082         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3083                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3084                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3085                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3086                                    "due to invitation result", ssid->id);
3087                         wpas_notify_network_removed(wpa_s, ssid);
3088                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3089                         return;
3090                 }
3091                 return; /* Peer not found in client list */
3092         }
3093
3094         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3095                    "group %d client list%s",
3096                    MAC2STR(peer), ssid->id,
3097                    inv ? " due to invitation result" : "");
3098         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3099                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3100                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3101         ssid->num_p2p_clients--;
3102         if (p2p_wpa_s->conf->update_config &&
3103             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3104                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3105 }
3106
3107
3108 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3109                                           const u8 *peer)
3110 {
3111         struct wpa_ssid *ssid;
3112
3113         wpa_s = wpa_s->global->p2p_invite_group;
3114         if (wpa_s == NULL)
3115                 return; /* No known invitation group */
3116         ssid = wpa_s->current_ssid;
3117         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3118             !ssid->p2p_persistent_group)
3119                 return; /* Not operating as a GO in persistent group */
3120         ssid = wpas_p2p_get_persistent(wpa_s->p2pdev, peer,
3121                                        ssid->ssid, ssid->ssid_len);
3122         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3123 }
3124
3125
3126 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3127                                    const struct p2p_channels *channels,
3128                                    const u8 *peer, int neg_freq,
3129                                    int peer_oper_freq)
3130 {
3131         struct wpa_supplicant *wpa_s = ctx;
3132         struct wpa_ssid *ssid;
3133         int freq;
3134
3135         if (bssid) {
3136                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3137                                "status=%d " MACSTR,
3138                                status, MAC2STR(bssid));
3139         } else {
3140                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3141                                "status=%d ", status);
3142         }
3143         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3144
3145         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3146                    status, MAC2STR(peer));
3147         if (wpa_s->pending_invite_ssid_id == -1) {
3148                 struct wpa_supplicant *group_if =
3149                         wpa_s->global->p2p_invite_group;
3150
3151                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3152                         wpas_remove_persistent_client(wpa_s, peer);
3153
3154                 /*
3155                  * Invitation to an active group. If this is successful and we
3156                  * are the GO, set the client wait to postpone some concurrent
3157                  * operations and to allow provisioning and connection to happen
3158                  * more quickly.
3159                  */
3160                 if (status == P2P_SC_SUCCESS &&
3161                     group_if && group_if->current_ssid &&
3162                     group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3163                         os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3164 #ifdef CONFIG_TESTING_OPTIONS
3165                         if (group_if->p2p_go_csa_on_inv) {
3166                                 wpa_printf(MSG_DEBUG,
3167                                            "Testing: force P2P GO CSA after invitation");
3168                                 eloop_cancel_timeout(
3169                                         wpas_p2p_reconsider_moving_go,
3170                                         wpa_s, NULL);
3171                                 eloop_register_timeout(
3172                                         0, 50000,
3173                                         wpas_p2p_reconsider_moving_go,
3174                                         wpa_s, NULL);
3175                         }
3176 #endif /* CONFIG_TESTING_OPTIONS */
3177                 }
3178                 return;
3179         }
3180
3181         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3182                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3183                            "invitation exchange to indicate readiness for "
3184                            "re-invocation");
3185         }
3186
3187         if (status != P2P_SC_SUCCESS) {
3188                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3189                         ssid = wpa_config_get_network(
3190                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3191                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3192                 }
3193                 wpas_p2p_remove_pending_group_interface(wpa_s);
3194                 return;
3195         }
3196
3197         ssid = wpa_config_get_network(wpa_s->conf,
3198                                       wpa_s->pending_invite_ssid_id);
3199         if (ssid == NULL) {
3200                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3201                            "data matching with invitation");
3202                 return;
3203         }
3204
3205         /*
3206          * The peer could have missed our ctrl::ack frame for Invitation
3207          * Response and continue retransmitting the frame. To reduce the
3208          * likelihood of the peer not getting successful TX status for the
3209          * Invitation Response frame, wait a short time here before starting
3210          * the persistent group so that we will remain on the current channel to
3211          * acknowledge any possible retransmission from the peer.
3212          */
3213         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3214                 "starting persistent group");
3215         os_sleep(0, 50000);
3216
3217         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3218             freq_included(wpa_s, channels, neg_freq))
3219                 freq = neg_freq;
3220         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3221                  freq_included(wpa_s, channels, peer_oper_freq))
3222                 freq = peer_oper_freq;
3223         else
3224                 freq = 0;
3225
3226         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3227                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3228         wpas_p2p_group_add_persistent(wpa_s, ssid,
3229                                       ssid->mode == WPAS_MODE_P2P_GO,
3230                                       wpa_s->p2p_persistent_go_freq,
3231                                       freq,
3232                                       wpa_s->p2p_go_vht_center_freq2,
3233                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3234                                       wpa_s->p2p_go_max_oper_chwidth,
3235                                       channels,
3236                                       ssid->mode == WPAS_MODE_P2P_GO ?
3237                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3238                                       0, 1);
3239 }
3240
3241
3242 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3243                                     unsigned int freq)
3244 {
3245         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3246                 return 1;
3247         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3248 }
3249
3250
3251 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3252 {
3253         reg->channel[reg->channels] = chan;
3254         reg->channels++;
3255 }
3256
3257
3258 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3259                                      struct p2p_channels *chan,
3260                                      struct p2p_channels *cli_chan)
3261 {
3262         int i, cla = 0;
3263
3264         wpa_s->global->p2p_24ghz_social_channels = 1;
3265
3266         os_memset(cli_chan, 0, sizeof(*cli_chan));
3267
3268         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3269                    "band");
3270
3271         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3272         chan->reg_class[cla].reg_class = 81;
3273         chan->reg_class[cla].channels = 0;
3274         for (i = 0; i < 11; i++) {
3275                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3276                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3277         }
3278         if (chan->reg_class[cla].channels)
3279                 cla++;
3280
3281         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3282                    "band");
3283
3284         /* Operating class 115 - 5 GHz, channels 36-48 */
3285         chan->reg_class[cla].reg_class = 115;
3286         chan->reg_class[cla].channels = 0;
3287         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3288                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3289         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3290                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3291         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3292                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3293         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3294                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3295         if (chan->reg_class[cla].channels)
3296                 cla++;
3297
3298         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3299                    "band");
3300
3301         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3302         chan->reg_class[cla].reg_class = 124;
3303         chan->reg_class[cla].channels = 0;
3304         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3305                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3306         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3307                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3308         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3309                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3310         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3311                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3312         if (chan->reg_class[cla].channels)
3313                 cla++;
3314
3315         chan->reg_classes = cla;
3316         return 0;
3317 }
3318
3319
3320 enum chan_allowed {
3321         NOT_ALLOWED, NO_IR, ALLOWED
3322 };
3323
3324 static int has_channel(struct wpa_global *global,
3325                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3326 {
3327         int i;
3328         unsigned int freq;
3329
3330         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3331                 chan * 5;
3332         if (wpas_p2p_disallowed_freq(global, freq))
3333                 return NOT_ALLOWED;
3334
3335         for (i = 0; i < mode->num_channels; i++) {
3336                 if (mode->channels[i].chan == chan) {
3337                         if (flags)
3338                                 *flags = mode->channels[i].flag;
3339                         if (mode->channels[i].flag &
3340                             (HOSTAPD_CHAN_DISABLED |
3341                              HOSTAPD_CHAN_RADAR))
3342                                 return NOT_ALLOWED;
3343                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3344                                 return NO_IR;
3345                         return ALLOWED;
3346                 }
3347         }
3348
3349         return NOT_ALLOWED;
3350 }
3351
3352
3353 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3354                                      struct hostapd_hw_modes *mode,
3355                                      u8 channel)
3356 {
3357         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3358         unsigned int i;
3359
3360         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3361                 return 0;
3362
3363         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3364                 /*
3365                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3366                  * so the center channel is 6 channels away from the start/end.
3367                  */
3368                 if (channel >= center_channels[i] - 6 &&
3369                     channel <= center_channels[i] + 6)
3370                         return center_channels[i];
3371
3372         return 0;
3373 }
3374
3375
3376 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3377                                                struct hostapd_hw_modes *mode,
3378                                                u8 channel, u8 bw)
3379 {
3380         u8 center_chan;
3381         int i, flags;
3382         enum chan_allowed res, ret = ALLOWED;
3383
3384         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3385         if (!center_chan)
3386                 return NOT_ALLOWED;
3387         if (center_chan >= 58 && center_chan <= 138)
3388                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3389
3390         /* check all the channels are available */
3391         for (i = 0; i < 4; i++) {
3392                 int adj_chan = center_chan - 6 + i * 4;
3393
3394                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3395                 if (res == NOT_ALLOWED)
3396                         return NOT_ALLOWED;
3397                 if (res == NO_IR)
3398                         ret = NO_IR;
3399
3400                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3401                         return NOT_ALLOWED;
3402                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3403                         return NOT_ALLOWED;
3404                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3405                         return NOT_ALLOWED;
3406                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3407                         return NOT_ALLOWED;
3408         }
3409
3410         return ret;
3411 }
3412
3413
3414 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3415                                      struct hostapd_hw_modes *mode,
3416                                      u8 channel)
3417 {
3418         u8 center_channels[] = { 50, 114 };
3419         unsigned int i;
3420
3421         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3422                 return 0;
3423
3424         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3425                 /*
3426                  * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3427                  * so the center channel is 14 channels away from the start/end.
3428                  */
3429                 if (channel >= center_channels[i] - 14 &&
3430                     channel <= center_channels[i] + 14)
3431                         return center_channels[i];
3432
3433         return 0;
3434 }
3435
3436
3437 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3438                                                struct hostapd_hw_modes *mode,
3439                                                u8 channel, u8 bw)
3440 {
3441         u8 center_chan;
3442         int i, flags;
3443         enum chan_allowed res, ret = ALLOWED;
3444
3445         center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3446         if (!center_chan)
3447                 return NOT_ALLOWED;
3448         /* VHT 160 MHz uses DFS channels in most countries. */
3449
3450         /* Check all the channels are available */
3451         for (i = 0; i < 8; i++) {
3452                 int adj_chan = center_chan - 14 + i * 4;
3453
3454                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3455                 if (res == NOT_ALLOWED)
3456                         return NOT_ALLOWED;
3457
3458                 if (res == NO_IR)
3459                         ret = NO_IR;
3460
3461                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3462                         return NOT_ALLOWED;
3463                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3464                         return NOT_ALLOWED;
3465                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3466                         return NOT_ALLOWED;
3467                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3468                         return NOT_ALLOWED;
3469                 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3470                         return NOT_ALLOWED;
3471                 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3472                         return NOT_ALLOWED;
3473                 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3474                         return NOT_ALLOWED;
3475                 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3476                         return NOT_ALLOWED;
3477         }
3478
3479         return ret;
3480 }
3481
3482
3483 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3484                                                  struct hostapd_hw_modes *mode,
3485                                                  u8 channel, u8 bw)
3486 {
3487         int flag = 0;
3488         enum chan_allowed res, res2;
3489
3490         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3491         if (bw == BW40MINUS) {
3492                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3493                         return NOT_ALLOWED;
3494                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3495         } else if (bw == BW40PLUS) {
3496                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3497                         return NOT_ALLOWED;
3498                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3499         } else if (bw == BW80) {
3500                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3501         } else if (bw == BW160) {
3502                 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3503         }
3504
3505         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3506                 return NOT_ALLOWED;
3507         if (res == NO_IR || res2 == NO_IR)
3508                 return NO_IR;
3509         return res;
3510 }
3511
3512
3513 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3514                                    struct p2p_channels *chan,
3515                                    struct p2p_channels *cli_chan)
3516 {
3517         struct hostapd_hw_modes *mode;
3518         int cla, op, cli_cla;
3519
3520         if (wpa_s->hw.modes == NULL) {
3521                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3522                            "of all supported channels; assume dualband "
3523                            "support");
3524                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3525         }
3526
3527         cla = cli_cla = 0;
3528
3529         for (op = 0; global_op_class[op].op_class; op++) {
3530                 const struct oper_class_map *o = &global_op_class[op];
3531                 u8 ch;
3532                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3533
3534                 if (o->p2p == NO_P2P_SUPP)
3535                         continue;
3536
3537                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3538                 if (mode == NULL)
3539                         continue;
3540                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3541                         wpa_s->global->p2p_24ghz_social_channels = 1;
3542                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3543                         enum chan_allowed res;
3544                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3545                         if (res == ALLOWED) {
3546                                 if (reg == NULL) {
3547                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3548                                                    o->op_class);
3549                                         reg = &chan->reg_class[cla];
3550                                         cla++;
3551                                         reg->reg_class = o->op_class;
3552                                 }
3553                                 reg->channel[reg->channels] = ch;
3554                                 reg->channels++;
3555                         } else if (res == NO_IR &&
3556                                    wpa_s->conf->p2p_add_cli_chan) {
3557                                 if (cli_reg == NULL) {
3558                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3559                                                    o->op_class);
3560                                         cli_reg = &cli_chan->reg_class[cli_cla];
3561                                         cli_cla++;
3562                                         cli_reg->reg_class = o->op_class;
3563                                 }
3564                                 cli_reg->channel[cli_reg->channels] = ch;
3565                                 cli_reg->channels++;
3566                         }
3567                 }
3568                 if (reg) {
3569                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3570                                     reg->channel, reg->channels);
3571                 }
3572                 if (cli_reg) {
3573                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3574                                     cli_reg->channel, cli_reg->channels);
3575                 }
3576         }
3577
3578         chan->reg_classes = cla;
3579         cli_chan->reg_classes = cli_cla;
3580
3581         return 0;
3582 }
3583
3584
3585 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3586                            struct hostapd_hw_modes *mode, u8 channel)
3587 {
3588         int op;
3589         enum chan_allowed ret;
3590
3591         for (op = 0; global_op_class[op].op_class; op++) {
3592                 const struct oper_class_map *o = &global_op_class[op];
3593                 u8 ch;
3594
3595                 if (o->p2p == NO_P2P_SUPP)
3596                         continue;
3597
3598                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3599                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3600                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3601                             ch != channel)
3602                                 continue;
3603                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3604                         if (ret == ALLOWED)
3605                                 return (o->bw == BW40MINUS) ? -1 : 1;
3606                 }
3607         }
3608         return 0;
3609 }
3610
3611
3612 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3613                               struct hostapd_hw_modes *mode, u8 channel)
3614 {
3615         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3616                 return 0;
3617
3618         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3619 }
3620
3621
3622 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3623                                struct hostapd_hw_modes *mode, u8 channel)
3624 {
3625         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3626                 return 0;
3627         return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3628 }
3629
3630
3631 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3632                         size_t buf_len)
3633 {
3634         struct wpa_supplicant *wpa_s = ctx;
3635
3636         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3637                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3638                         break;
3639         }
3640         if (wpa_s == NULL)
3641                 return -1;
3642
3643         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3644 }
3645
3646
3647 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3648                                               const u8 *ssid, size_t ssid_len)
3649 {
3650         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3651                 struct wpa_ssid *s = wpa_s->current_ssid;
3652                 if (s == NULL)
3653                         continue;
3654                 if (s->mode != WPAS_MODE_P2P_GO &&
3655                     s->mode != WPAS_MODE_AP &&
3656                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3657                         continue;
3658                 if (s->ssid_len != ssid_len ||
3659                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3660                         continue;
3661                 return wpa_s;
3662         }
3663
3664         return NULL;
3665
3666 }
3667
3668
3669 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3670                                                   const u8 *peer_dev_addr)
3671 {
3672         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3673                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3674                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3675                         continue;
3676                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3677                         return wpa_s;
3678         }
3679
3680         return NULL;
3681 }
3682
3683
3684 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3685 {
3686         struct wpa_supplicant *wpa_s = ctx;
3687
3688         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3689 }
3690
3691
3692 static int wpas_is_concurrent_session_active(void *ctx)
3693 {
3694         struct wpa_supplicant *wpa_s = ctx;
3695         struct wpa_supplicant *ifs;
3696
3697         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3698                 if (ifs == wpa_s)
3699                         continue;
3700                 if (ifs->wpa_state > WPA_ASSOCIATED)
3701                         return 1;
3702         }
3703         return 0;
3704 }
3705
3706
3707 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3708 {
3709         struct wpa_supplicant *wpa_s = ctx;
3710         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3711 }
3712
3713
3714 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3715                                   const char *conf_p2p_dev)
3716 {
3717         struct wpa_interface iface;
3718         struct wpa_supplicant *p2pdev_wpa_s;
3719         char ifname[100];
3720         char force_name[100];
3721         int ret;
3722
3723         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3724                           wpa_s->ifname);
3725         if (os_snprintf_error(sizeof(ifname), ret))
3726                 return -1;
3727         force_name[0] = '\0';
3728         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3729         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3730                              force_name, wpa_s->pending_interface_addr, NULL);
3731         if (ret < 0) {
3732                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3733                 return ret;
3734         }
3735         os_strlcpy(wpa_s->pending_interface_name, ifname,
3736                    sizeof(wpa_s->pending_interface_name));
3737
3738         os_memset(&iface, 0, sizeof(iface));
3739         iface.p2p_mgmt = 1;
3740         iface.ifname = wpa_s->pending_interface_name;
3741         iface.driver = wpa_s->driver->name;
3742         iface.driver_param = wpa_s->conf->driver_param;
3743
3744         /*
3745          * If a P2P Device configuration file was given, use it as the interface
3746          * configuration file (instead of using parent's configuration file.
3747          */
3748         if (conf_p2p_dev) {
3749                 iface.confname = conf_p2p_dev;
3750                 iface.ctrl_interface = NULL;
3751         } else {
3752                 iface.confname = wpa_s->confname;
3753                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3754         }
3755
3756         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3757         if (!p2pdev_wpa_s) {
3758                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3759                 return -1;
3760         }
3761
3762         p2pdev_wpa_s->p2pdev = p2pdev_wpa_s;
3763         wpa_s->pending_interface_name[0] = '\0';
3764         return 0;
3765 }
3766
3767
3768 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3769                                const u8 *noa, size_t noa_len)
3770 {
3771         struct wpa_supplicant *wpa_s, *intf = ctx;
3772         char hex[100];
3773
3774         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3775                 if (wpa_s->waiting_presence_resp)
3776                         break;
3777         }
3778         if (!wpa_s) {
3779                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3780                 return;
3781         }
3782         wpa_s->waiting_presence_resp = 0;
3783
3784         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3785         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3786                 " status=%u noa=%s", MAC2STR(src), status, hex);
3787 }
3788
3789
3790 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3791                                      size_t ssid_len, u8 *go_dev_addr,
3792                                      u8 *ret_ssid, size_t *ret_ssid_len,
3793                                      u8 *intended_iface_addr)
3794 {
3795         struct wpa_supplicant *wpa_s = ctx;
3796         struct wpa_ssid *s;
3797
3798         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3799         if (s) {
3800                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3801                 *ret_ssid_len = s->ssid_len;
3802                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3803
3804                 if (s->mode != WPAS_MODE_P2P_GO) {
3805                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3806                 } else if (wpas_p2p_create_iface(wpa_s)) {
3807                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3808                                 return 0;
3809
3810                         os_memcpy(intended_iface_addr,
3811                                   wpa_s->pending_interface_addr, ETH_ALEN);
3812                 } else {
3813                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3814                                   ETH_ALEN);
3815                 }
3816                 return 1;
3817         }
3818
3819         return 0;
3820 }
3821
3822
3823 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3824                             u8 *ssid, size_t *ssid_len, int *group_iface,
3825                             unsigned int *freq)
3826 {
3827         struct wpa_supplicant *wpa_s = ctx;
3828         struct wpa_supplicant *go;
3829         struct wpa_ssid *s;
3830
3831         /*
3832          * group_iface will be set to 1 only if a dedicated interface for P2P
3833          * role is required. First, we try to reuse an active GO. However,
3834          * if it is not present, we will try to reactivate an existing
3835          * persistent group and set group_iface to 1, so the caller will know
3836          * that the pending interface should be used.
3837          */
3838         *group_iface = 0;
3839
3840         if (freq)
3841                 *freq = 0;
3842
3843         go = wpas_p2p_get_go_group(wpa_s);
3844         if (!go) {
3845                 s = wpas_p2p_get_persistent_go(wpa_s);
3846                 *group_iface = wpas_p2p_create_iface(wpa_s);
3847                 if (s)
3848                         os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3849                 else
3850                         return 0;
3851         } else {
3852                 s = go->current_ssid;
3853                 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3854                 if (freq)
3855                         *freq = go->assoc_freq;
3856         }
3857
3858         os_memcpy(ssid, s->ssid, s->ssid_len);
3859         *ssid_len = s->ssid_len;
3860
3861         return 1;
3862 }
3863
3864
3865 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3866                                     const u8 *ssid, size_t ssid_len)
3867 {
3868         struct wpa_supplicant *wpa_s = ctx;
3869         struct wpa_ssid *s;
3870         int save_config = 0;
3871         size_t i;
3872
3873         /* Start with our first choice of Persistent Groups */
3874         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3875                 if (go && ssid && ssid_len &&
3876                     s->ssid_len == ssid_len &&
3877                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3878                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3879                         break;
3880
3881                 /* Remove stale persistent group */
3882                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3883                         wpa_config_remove_network(wpa_s->conf, s->id);
3884                         save_config = 1;
3885                         continue;
3886                 }
3887
3888                 for (i = 0; i < s->num_p2p_clients; i++) {
3889                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3890                                       peer, ETH_ALEN) != 0)
3891                                 continue;
3892
3893                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3894                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3895                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3896                         break;
3897                 }
3898                 s->num_p2p_clients--;
3899                 save_config = 1;
3900         }
3901
3902         if (save_config)
3903                 p2p_config_write(wpa_s);
3904
3905         /* Return TRUE if valid SSID remains */
3906         return s != NULL;
3907 }
3908
3909
3910 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3911                                        const u8 *feat_cap, size_t feat_cap_len)
3912 {
3913         static const char pref[] = " feature_cap=";
3914         int ret;
3915
3916         buf[0] = '\0';
3917
3918         /*
3919          * We expect a feature capability to contain at least one byte to be
3920          * reported. The string buffer provided by the caller function is
3921          * expected to be big enough to contain all bytes of the attribute for
3922          * known specifications. This function truncates the reported bytes if
3923          * the feature capability data exceeds the string buffer size.
3924          */
3925         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3926                 return;
3927
3928         os_memcpy(buf, pref, sizeof(pref));
3929         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3930                                buf_len - sizeof(pref) + 1,
3931                                feat_cap, feat_cap_len);
3932
3933         if (ret != (2 * (int) feat_cap_len))
3934                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3935 }
3936
3937
3938 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3939                                     const u8 *adv_mac, const u8 *ses_mac,
3940                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3941                                     u8 conncap, int passwd_id,
3942                                     const u8 *persist_ssid,
3943                                     size_t persist_ssid_size, int response_done,
3944                                     int prov_start, const char *session_info,
3945                                     const u8 *feat_cap, size_t feat_cap_len,
3946                                     unsigned int freq,
3947                                     const u8 *group_ssid, size_t group_ssid_len)
3948 {
3949         struct wpa_supplicant *wpa_s = ctx;
3950         u8 mac[ETH_ALEN];
3951         struct wpa_ssid *persistent_go, *stale, *s = NULL;
3952         int save_config = 0;
3953         struct wpa_supplicant *go_wpa_s;
3954         char feat_cap_str[256];
3955
3956         if (!dev)
3957                 return;
3958
3959         os_memset(mac, 0, ETH_ALEN);
3960         if (!adv_mac)
3961                 adv_mac = mac;
3962         if (!ses_mac)
3963                 ses_mac = mac;
3964         if (!grp_mac)
3965                 grp_mac = mac;
3966
3967         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3968                                    feat_cap, feat_cap_len);
3969
3970         if (prov_start) {
3971                 if (session_info == NULL) {
3972                         wpa_msg_global(wpa_s, MSG_INFO,
3973                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3974                                        " adv_id=%x conncap=%x"
3975                                        " adv_mac=" MACSTR
3976                                        " session=%x mac=" MACSTR
3977                                        " dev_passwd_id=%d%s",
3978                                        MAC2STR(dev), adv_id, conncap,
3979                                        MAC2STR(adv_mac),
3980                                        ses_id, MAC2STR(ses_mac),
3981                                        passwd_id, feat_cap_str);
3982                 } else {
3983                         wpa_msg_global(wpa_s, MSG_INFO,
3984                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3985                                        " adv_id=%x conncap=%x"
3986                                        " adv_mac=" MACSTR
3987                                        " session=%x mac=" MACSTR
3988                                        " dev_passwd_id=%d info='%s'%s",
3989                                        MAC2STR(dev), adv_id, conncap,
3990                                        MAC2STR(adv_mac),
3991                                        ses_id, MAC2STR(ses_mac),
3992                                        passwd_id, session_info, feat_cap_str);
3993                 }
3994                 return;
3995         }
3996
3997         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
3998         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3999
4000         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4001                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4002                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4003
4004                 if (persistent_go && !persistent_go->num_p2p_clients) {
4005                         /* remove empty persistent GO */
4006                         wpa_config_remove_network(wpa_s->conf,
4007                                                   persistent_go->id);
4008                 }
4009
4010                 wpa_msg_global(wpa_s, MSG_INFO,
4011                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4012                                " status=%d"
4013                                " adv_id=%x adv_mac=" MACSTR
4014                                " session=%x mac=" MACSTR "%s",
4015                                MAC2STR(dev), status,
4016                                adv_id, MAC2STR(adv_mac),
4017                                ses_id, MAC2STR(ses_mac), feat_cap_str);
4018                 return;
4019         }
4020
4021         /* Clean up stale persistent groups with this device */
4022         if (persist_ssid && persist_ssid_size)
4023                 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4024                                             persist_ssid_size);
4025
4026         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4027             is_zero_ether_addr(grp_mac)) {
4028                 wpa_dbg(wpa_s, MSG_ERROR,
4029                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4030                 return;
4031         }
4032
4033         for (;;) {
4034                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4035                 if (!stale)
4036                         break;
4037
4038                 if (s && s->ssid_len == stale->ssid_len &&
4039                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4040                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4041                         break;
4042
4043                 /* Remove stale persistent group */
4044                 if (stale->mode != WPAS_MODE_P2P_GO ||
4045                     stale->num_p2p_clients <= 1) {
4046                         wpa_config_remove_network(wpa_s->conf, stale->id);
4047                 } else {
4048                         size_t i;
4049
4050                         for (i = 0; i < stale->num_p2p_clients; i++) {
4051                                 if (os_memcmp(stale->p2p_client_list +
4052                                               i * ETH_ALEN,
4053                                               dev, ETH_ALEN) == 0) {
4054                                         os_memmove(stale->p2p_client_list +
4055                                                    i * ETH_ALEN,
4056                                                    stale->p2p_client_list +
4057                                                    (i + 1) * ETH_ALEN,
4058                                                    (stale->num_p2p_clients -
4059                                                     i - 1) * ETH_ALEN);
4060                                         break;
4061                                 }
4062                         }
4063                         stale->num_p2p_clients--;
4064                 }
4065                 save_config = 1;
4066         }
4067
4068         if (save_config)
4069                 p2p_config_write(wpa_s);
4070
4071         if (s) {
4072                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4073                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4074
4075                 if (persistent_go && s != persistent_go &&
4076                     !persistent_go->num_p2p_clients) {
4077                         /* remove empty persistent GO */
4078                         wpa_config_remove_network(wpa_s->conf,
4079                                                   persistent_go->id);
4080                         /* Save config */
4081                 }
4082
4083                 wpa_msg_global(wpa_s, MSG_INFO,
4084                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4085                                " status=%d"
4086                                " adv_id=%x adv_mac=" MACSTR
4087                                " session=%x mac=" MACSTR
4088                                " persist=%d%s",
4089                                MAC2STR(dev), status,
4090                                adv_id, MAC2STR(adv_mac),
4091                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4092                 return;
4093         }
4094
4095         if (conncap == P2PS_SETUP_GROUP_OWNER) {
4096                 /*
4097                  * We need to copy the interface name. Simply saving a
4098                  * pointer isn't enough, since if we use pending_interface_name
4099                  * it will be overwritten when the group is added.
4100                  */
4101                 char go_ifname[100];
4102
4103                 go_ifname[0] = '\0';
4104                 if (!go_wpa_s) {
4105                         wpa_s->global->pending_p2ps_group = 1;
4106                         wpa_s->global->pending_p2ps_group_freq = freq;
4107
4108                         if (!wpas_p2p_create_iface(wpa_s))
4109                                 os_memcpy(go_ifname, wpa_s->ifname,
4110                                           sizeof(go_ifname));
4111                         else if (wpa_s->pending_interface_name[0])
4112                                 os_memcpy(go_ifname,
4113                                           wpa_s->pending_interface_name,
4114                                           sizeof(go_ifname));
4115
4116                         if (!go_ifname[0]) {
4117                                 wpas_p2ps_prov_complete(
4118                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4119                                         dev, adv_mac, ses_mac,
4120                                         grp_mac, adv_id, ses_id, 0, 0,
4121                                         NULL, 0, 0, 0, NULL, NULL, 0, 0,
4122                                         NULL, 0);
4123                                 return;
4124                         }
4125
4126                         /* If PD Resp complete, start up the GO */
4127                         if (response_done && persistent_go) {
4128                                 wpas_p2p_group_add_persistent(
4129                                         wpa_s, persistent_go,
4130                                         0, 0, freq, 0, 0, 0, 0, NULL,
4131                                         persistent_go->mode ==
4132                                         WPAS_MODE_P2P_GO ?
4133                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4134                                         0, 0);
4135                         } else if (response_done) {
4136                                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4137                         }
4138
4139                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4140                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4141                                           ETH_ALEN);
4142                                 wpa_s->p2ps_method_config_any = 1;
4143                         }
4144                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4145                         os_memcpy(go_ifname, go_wpa_s->ifname,
4146                                   sizeof(go_ifname));
4147
4148                         if (is_zero_ether_addr(grp_mac)) {
4149                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4150                                         "P2P: Setting PIN-1 for ANY");
4151                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4152                                                           "12345670", NULL, 0,
4153                                                           0);
4154                         } else {
4155                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4156                                         "P2P: Setting PIN-1 for " MACSTR,
4157                                         MAC2STR(grp_mac));
4158                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4159                                                           "12345670", NULL, 0,
4160                                                           0);
4161                         }
4162
4163                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4164                         wpa_s->p2ps_method_config_any = 1;
4165                 }
4166
4167                 wpa_msg_global(wpa_s, MSG_INFO,
4168                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4169                                " status=%d conncap=%x"
4170                                " adv_id=%x adv_mac=" MACSTR
4171                                " session=%x mac=" MACSTR
4172                                " dev_passwd_id=%d go=%s%s",
4173                                MAC2STR(dev), status, conncap,
4174                                adv_id, MAC2STR(adv_mac),
4175                                ses_id, MAC2STR(ses_mac),
4176                                passwd_id, go_ifname, feat_cap_str);
4177                 return;
4178         }
4179
4180         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4181                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4182
4183         if (persistent_go && !persistent_go->num_p2p_clients) {
4184                 /* remove empty persistent GO */
4185                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4186         }
4187
4188         if (conncap == P2PS_SETUP_CLIENT) {
4189                 char ssid_hex[32 * 2 + 1];
4190
4191                 if (group_ssid)
4192                         wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex),
4193                                          group_ssid, group_ssid_len);
4194                 else
4195                         ssid_hex[0] = '\0';
4196                 wpa_msg_global(wpa_s, MSG_INFO,
4197                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4198                                " status=%d conncap=%x"
4199                                " adv_id=%x adv_mac=" MACSTR
4200                                " session=%x mac=" MACSTR
4201                                " dev_passwd_id=%d join=" MACSTR "%s%s%s",
4202                                MAC2STR(dev), status, conncap,
4203                                adv_id, MAC2STR(adv_mac),
4204                                ses_id, MAC2STR(ses_mac),
4205                                passwd_id, MAC2STR(grp_mac), feat_cap_str,
4206                                group_ssid ? " group_ssid=" : "", ssid_hex);
4207         } else {
4208                 wpa_msg_global(wpa_s, MSG_INFO,
4209                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4210                                " status=%d conncap=%x"
4211                                " adv_id=%x adv_mac=" MACSTR
4212                                " session=%x mac=" MACSTR
4213                                " dev_passwd_id=%d%s",
4214                                MAC2STR(dev), status, conncap,
4215                                adv_id, MAC2STR(adv_mac),
4216                                ses_id, MAC2STR(ses_mac),
4217                                passwd_id, feat_cap_str);
4218         }
4219 }
4220
4221
4222 static int _wpas_p2p_in_progress(void *ctx)
4223 {
4224         struct wpa_supplicant *wpa_s = ctx;
4225         return wpas_p2p_in_progress(wpa_s);
4226 }
4227
4228
4229 static int wpas_prov_disc_resp_cb(void *ctx)
4230 {
4231         struct wpa_supplicant *wpa_s = ctx;
4232         struct wpa_ssid *persistent_go;
4233         unsigned int freq;
4234
4235         if (!wpa_s->global->pending_p2ps_group)
4236                 return 0;
4237
4238         freq = wpa_s->global->pending_p2ps_group_freq;
4239         wpa_s->global->pending_p2ps_group_freq = 0;
4240         wpa_s->global->pending_p2ps_group = 0;
4241
4242         if (wpas_p2p_get_go_group(wpa_s))
4243                 return 0;
4244         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4245
4246         if (persistent_go) {
4247                 wpas_p2p_group_add_persistent(
4248                         wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL,
4249                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4250                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4251         } else {
4252                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4253         }
4254
4255         return 1;
4256 }
4257
4258
4259 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4260                                        unsigned int *len,
4261                                        unsigned int *freq_list)
4262 {
4263         struct wpa_supplicant *wpa_s = ctx;
4264
4265         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4266                                           WPA_IF_P2P_CLIENT, len, freq_list);
4267 }
4268
4269
4270 /**
4271  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4272  * @global: Pointer to global data from wpa_supplicant_init()
4273  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4274  * Returns: 0 on success, -1 on failure
4275  */
4276 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4277 {
4278         struct p2p_config p2p;
4279         int i;
4280
4281         if (wpa_s->conf->p2p_disabled)
4282                 return 0;
4283
4284         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4285                 return 0;
4286
4287         if (global->p2p)
4288                 return 0;
4289
4290         os_memset(&p2p, 0, sizeof(p2p));
4291         p2p.cb_ctx = wpa_s;
4292         p2p.debug_print = wpas_p2p_debug_print;
4293         p2p.p2p_scan = wpas_p2p_scan;
4294         p2p.send_action = wpas_send_action;
4295         p2p.send_action_done = wpas_send_action_done;
4296         p2p.go_neg_completed = wpas_go_neg_completed;
4297         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4298         p2p.dev_found = wpas_dev_found;
4299         p2p.dev_lost = wpas_dev_lost;
4300         p2p.find_stopped = wpas_find_stopped;
4301         p2p.start_listen = wpas_start_listen;
4302         p2p.stop_listen = wpas_stop_listen;
4303         p2p.send_probe_resp = wpas_send_probe_resp;
4304         p2p.sd_request = wpas_sd_request;
4305         p2p.sd_response = wpas_sd_response;
4306         p2p.prov_disc_req = wpas_prov_disc_req;
4307         p2p.prov_disc_resp = wpas_prov_disc_resp;
4308         p2p.prov_disc_fail = wpas_prov_disc_fail;
4309         p2p.invitation_process = wpas_invitation_process;
4310         p2p.invitation_received = wpas_invitation_received;
4311         p2p.invitation_result = wpas_invitation_result;
4312         p2p.get_noa = wpas_get_noa;
4313         p2p.go_connected = wpas_go_connected;
4314         p2p.presence_resp = wpas_presence_resp;
4315         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4316         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4317         p2p.get_persistent_group = wpas_get_persistent_group;
4318         p2p.get_go_info = wpas_get_go_info;
4319         p2p.remove_stale_groups = wpas_remove_stale_groups;
4320         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4321         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4322         p2p.p2ps_group_capability = p2ps_group_capability;
4323         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4324
4325         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4326         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4327         p2p.dev_name = wpa_s->conf->device_name;
4328         p2p.manufacturer = wpa_s->conf->manufacturer;
4329         p2p.model_name = wpa_s->conf->model_name;
4330         p2p.model_number = wpa_s->conf->model_number;
4331         p2p.serial_number = wpa_s->conf->serial_number;
4332         if (wpa_s->wps) {
4333                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4334                 p2p.config_methods = wpa_s->wps->config_methods;
4335         }
4336
4337         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4338                 wpa_printf(MSG_ERROR,
4339                            "P2P: Failed to configure supported channel list");
4340                 return -1;
4341         }
4342
4343         if (wpa_s->conf->p2p_listen_reg_class &&
4344             wpa_s->conf->p2p_listen_channel) {
4345                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4346                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4347                 p2p.channel_forced = 1;
4348         } else {
4349                 /*
4350                  * Pick one of the social channels randomly as the listen
4351                  * channel.
4352                  */
4353                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4354                                                  &p2p.channel) != 0) {
4355                         wpa_printf(MSG_INFO,
4356                                    "P2P: No social channels supported by the driver - do not enable P2P");
4357                         return 0;
4358                 }
4359                 p2p.channel_forced = 0;
4360         }
4361         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4362                    p2p.reg_class, p2p.channel);
4363
4364         if (wpa_s->conf->p2p_oper_reg_class &&
4365             wpa_s->conf->p2p_oper_channel) {
4366                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4367                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4368                 p2p.cfg_op_channel = 1;
4369                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4370                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4371
4372         } else {
4373                 /*
4374                  * Use random operation channel from 2.4 GHz band social
4375                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4376                  * other preference is indicated.
4377                  */
4378                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4379                                                  &p2p.op_channel) != 0) {
4380                         wpa_printf(MSG_ERROR,
4381                                    "P2P: Failed to select random social channel as operation channel");
4382                         return -1;
4383                 }
4384                 p2p.cfg_op_channel = 0;
4385                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4386                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4387         }
4388
4389         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4390                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4391                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4392         }
4393
4394         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4395                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4396                 p2p.country[2] = 0x04;
4397         } else
4398                 os_memcpy(p2p.country, "XX\x04", 3);
4399
4400         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4401                   WPS_DEV_TYPE_LEN);
4402
4403         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4404         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4405                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4406
4407         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4408                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4409
4410         p2p.max_peers = 100;
4411
4412         if (wpa_s->conf->p2p_ssid_postfix) {
4413                 p2p.ssid_postfix_len =
4414                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4415                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4416                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4417                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4418                           p2p.ssid_postfix_len);
4419         }
4420
4421         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4422
4423         p2p.max_listen = wpa_s->max_remain_on_chan;
4424
4425         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4426             wpa_s->conf->p2p_passphrase_len <= 63)
4427                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4428         else
4429                 p2p.passphrase_len = 8;
4430
4431         global->p2p = p2p_init(&p2p);
4432         if (global->p2p == NULL)
4433                 return -1;
4434         global->p2p_init_wpa_s = wpa_s;
4435
4436         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4437                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4438                         continue;
4439                 p2p_add_wps_vendor_extension(
4440                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4441         }
4442
4443         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4444
4445         return 0;
4446 }
4447
4448
4449 /**
4450  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4451  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4452  *
4453  * This function deinitialize per-interface P2P data.
4454  */
4455 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4456 {
4457         if (wpa_s->driver && wpa_s->drv_priv)
4458                 wpa_drv_probe_req_report(wpa_s, 0);
4459
4460         if (wpa_s->go_params) {
4461                 /* Clear any stored provisioning info */
4462                 p2p_clear_provisioning_info(
4463                         wpa_s->global->p2p,
4464                         wpa_s->go_params->peer_device_addr);
4465         }
4466
4467         os_free(wpa_s->go_params);
4468         wpa_s->go_params = NULL;
4469         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4470         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4471         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4472         wpa_s->p2p_long_listen = 0;
4473         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4474         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4475         wpas_p2p_remove_pending_group_interface(wpa_s);
4476         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4477         wpas_p2p_listen_work_done(wpa_s);
4478         if (wpa_s->p2p_send_action_work) {
4479                 os_free(wpa_s->p2p_send_action_work->ctx);
4480                 radio_work_done(wpa_s->p2p_send_action_work);
4481                 wpa_s->p2p_send_action_work = NULL;
4482         }
4483         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4484
4485         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4486         wpa_s->p2p_oob_dev_pw = NULL;
4487
4488         os_free(wpa_s->p2p_group_common_freqs);
4489         wpa_s->p2p_group_common_freqs = NULL;
4490         wpa_s->p2p_group_common_freqs_num = 0;
4491
4492         /* TODO: remove group interface from the driver if this wpa_s instance
4493          * is on top of a P2P group interface */
4494 }
4495
4496
4497 /**
4498  * wpas_p2p_deinit_global - Deinitialize global P2P module
4499  * @global: Pointer to global data from wpa_supplicant_init()
4500  *
4501  * This function deinitializes the global (per device) P2P module.
4502  */
4503 static void wpas_p2p_deinit_global(struct wpa_global *global)
4504 {
4505         struct wpa_supplicant *wpa_s, *tmp;
4506
4507         wpa_s = global->ifaces;
4508
4509         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4510
4511         /* Remove remaining P2P group interfaces */
4512         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4513                 wpa_s = wpa_s->next;
4514         while (wpa_s) {
4515                 tmp = global->ifaces;
4516                 while (tmp &&
4517                        (tmp == wpa_s ||
4518                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4519                         tmp = tmp->next;
4520                 }
4521                 if (tmp == NULL)
4522                         break;
4523                 /* Disconnect from the P2P group and deinit the interface */
4524                 wpas_p2p_disconnect(tmp);
4525         }
4526
4527         /*
4528          * Deinit GO data on any possibly remaining interface (if main
4529          * interface is used as GO).
4530          */
4531         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4532                 if (wpa_s->ap_iface)
4533                         wpas_p2p_group_deinit(wpa_s);
4534         }
4535
4536         p2p_deinit(global->p2p);
4537         global->p2p = NULL;
4538         global->p2p_init_wpa_s = NULL;
4539 }
4540
4541
4542 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4543 {
4544         if (wpa_s->conf->p2p_no_group_iface)
4545                 return 0; /* separate interface disabled per configuration */
4546         if (wpa_s->drv_flags &
4547             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4548              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4549                 return 1; /* P2P group requires a new interface in every case
4550                            */
4551         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4552                 return 0; /* driver does not support concurrent operations */
4553         if (wpa_s->global->ifaces->next)
4554                 return 1; /* more that one interface already in use */
4555         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4556                 return 1; /* this interface is already in use */
4557         return 0;
4558 }
4559
4560
4561 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4562                                  const u8 *peer_addr,
4563                                  enum p2p_wps_method wps_method,
4564                                  int go_intent, const u8 *own_interface_addr,
4565                                  unsigned int force_freq, int persistent_group,
4566                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4567 {
4568         if (persistent_group && wpa_s->conf->persistent_reconnect)
4569                 persistent_group = 2;
4570
4571         /*
4572          * Increase GO config timeout if HT40 is used since it takes some time
4573          * to scan channels for coex purposes before the BSS can be started.
4574          */
4575         p2p_set_config_timeout(wpa_s->global->p2p,
4576                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4577
4578         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4579                            go_intent, own_interface_addr, force_freq,
4580                            persistent_group, ssid ? ssid->ssid : NULL,
4581                            ssid ? ssid->ssid_len : 0,
4582                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4583                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4584                            0);
4585 }
4586
4587
4588 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4589                                 const u8 *peer_addr,
4590                                 enum p2p_wps_method wps_method,
4591                                 int go_intent, const u8 *own_interface_addr,
4592                                 unsigned int force_freq, int persistent_group,
4593                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4594 {
4595         if (persistent_group && wpa_s->conf->persistent_reconnect)
4596                 persistent_group = 2;
4597
4598         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4599                              go_intent, own_interface_addr, force_freq,
4600                              persistent_group, ssid ? ssid->ssid : NULL,
4601                              ssid ? ssid->ssid_len : 0, pref_freq,
4602                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4603                              0);
4604 }
4605
4606
4607 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4608 {
4609         wpa_s->p2p_join_scan_count++;
4610         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4611                    wpa_s->p2p_join_scan_count);
4612         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4613                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4614                            " for join operationg - stop join attempt",
4615                            MAC2STR(wpa_s->pending_join_iface_addr));
4616                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4617                 if (wpa_s->p2p_auto_pd) {
4618                         wpa_s->p2p_auto_pd = 0;
4619                         wpa_msg_global(wpa_s, MSG_INFO,
4620                                        P2P_EVENT_PROV_DISC_FAILURE
4621                                        " p2p_dev_addr=" MACSTR " status=N/A",
4622                                        MAC2STR(wpa_s->pending_join_dev_addr));
4623                         return;
4624                 }
4625                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4626                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4627                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4628         }
4629 }
4630
4631
4632 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4633 {
4634         int res;
4635         unsigned int num, i;
4636         struct wpa_used_freq_data *freqs;
4637
4638         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4639                 /* Multiple channels are supported and not all are in use */
4640                 return 0;
4641         }
4642
4643         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4644                           sizeof(struct wpa_used_freq_data));
4645         if (!freqs)
4646                 return 1;
4647
4648         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4649                                         wpa_s->num_multichan_concurrent);
4650
4651         for (i = 0; i < num; i++) {
4652                 if (freqs[i].freq == freq) {
4653                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4654                                    freq);
4655                         res = 0;
4656                         goto exit_free;
4657                 }
4658         }
4659
4660         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4661         res = 1;
4662
4663 exit_free:
4664         os_free(freqs);
4665         return res;
4666 }
4667
4668
4669 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4670                             const u8 *peer_dev_addr)
4671 {
4672         struct wpa_bss *bss;
4673         int updated;
4674
4675         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4676         if (bss == NULL)
4677                 return -1;
4678         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4679                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4680                            "last scan");
4681                 return 0;
4682         }
4683
4684         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4685                                     &bss->last_update);
4686         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4687                    "%ld.%06ld (%supdated in last scan)",
4688                    bss->last_update.sec, bss->last_update.usec,
4689                    updated ? "": "not ");
4690
4691         return updated;
4692 }
4693
4694
4695 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4696                                    struct wpa_scan_results *scan_res)
4697 {
4698         struct wpa_bss *bss = NULL;
4699         int freq;
4700         u8 iface_addr[ETH_ALEN];
4701
4702         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4703
4704         if (wpa_s->global->p2p_disabled)
4705                 return;
4706
4707         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4708                    scan_res ? (int) scan_res->num : -1,
4709                    wpa_s->p2p_auto_join ? "auto_" : "");
4710
4711         if (scan_res)
4712                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4713
4714         if (wpa_s->p2p_auto_pd) {
4715                 int join = wpas_p2p_peer_go(wpa_s,
4716                                             wpa_s->pending_join_dev_addr);
4717                 if (join == 0 &&
4718                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4719                         wpa_s->auto_pd_scan_retry++;
4720                         bss = wpa_bss_get_bssid_latest(
4721                                 wpa_s, wpa_s->pending_join_dev_addr);
4722                         if (bss) {
4723                                 freq = bss->freq;
4724                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4725                                            "the peer " MACSTR " at %d MHz",
4726                                            wpa_s->auto_pd_scan_retry,
4727                                            MAC2STR(wpa_s->
4728                                                    pending_join_dev_addr),
4729                                            freq);
4730                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4731                                 return;
4732                         }
4733                 }
4734
4735                 if (join < 0)
4736                         join = 0;
4737
4738                 wpa_s->p2p_auto_pd = 0;
4739                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4740                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4741                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4742                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4743                                       wpa_s->pending_join_dev_addr, NULL,
4744                                       wpa_s->pending_pd_config_methods, join,
4745                                       0, wpa_s->user_initiated_pd) < 0) {
4746                         wpa_s->p2p_auto_pd = 0;
4747                         wpa_msg_global(wpa_s, MSG_INFO,
4748                                        P2P_EVENT_PROV_DISC_FAILURE
4749                                        " p2p_dev_addr=" MACSTR " status=N/A",
4750                                        MAC2STR(wpa_s->pending_join_dev_addr));
4751                 }
4752                 return;
4753         }
4754
4755         if (wpa_s->p2p_auto_join) {
4756                 int join = wpas_p2p_peer_go(wpa_s,
4757                                             wpa_s->pending_join_dev_addr);
4758                 if (join < 0) {
4759                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4760                                    "running a GO -> use GO Negotiation");
4761                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4762                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4763                                        "reason=peer-not-running-GO");
4764                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4765                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4766                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4767                                          wpa_s->p2p_go_intent,
4768                                          wpa_s->p2p_connect_freq,
4769                                          wpa_s->p2p_go_vht_center_freq2,
4770                                          wpa_s->p2p_persistent_id,
4771                                          wpa_s->p2p_pd_before_go_neg,
4772                                          wpa_s->p2p_go_ht40,
4773                                          wpa_s->p2p_go_vht,
4774                                          wpa_s->p2p_go_max_oper_chwidth,
4775                                          NULL, 0);
4776                         return;
4777                 }
4778
4779                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4780                            "try to join the group", join ? "" :
4781                            " in older scan");
4782                 if (!join) {
4783                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4784                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4785                         wpa_s->p2p_fallback_to_go_neg = 1;
4786                 }
4787         }
4788
4789         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4790                                  wpa_s->pending_join_iface_addr);
4791         if (freq < 0 &&
4792             p2p_get_interface_addr(wpa_s->global->p2p,
4793                                    wpa_s->pending_join_dev_addr,
4794                                    iface_addr) == 0 &&
4795             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4796             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4797                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4798                            "address for join from " MACSTR " to " MACSTR
4799                            " based on newly discovered P2P peer entry",
4800                            MAC2STR(wpa_s->pending_join_iface_addr),
4801                            MAC2STR(iface_addr));
4802                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4803                           ETH_ALEN);
4804
4805                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4806                                          wpa_s->pending_join_iface_addr);
4807         }
4808         if (freq >= 0) {
4809                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4810                            "from P2P peer table: %d MHz", freq);
4811         }
4812         if (wpa_s->p2p_join_ssid_len) {
4813                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4814                            MACSTR " and SSID %s",
4815                            MAC2STR(wpa_s->pending_join_iface_addr),
4816                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4817                                         wpa_s->p2p_join_ssid_len));
4818                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4819                                   wpa_s->p2p_join_ssid,
4820                                   wpa_s->p2p_join_ssid_len);
4821         } else if (!bss) {
4822                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4823                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4824                 bss = wpa_bss_get_bssid_latest(wpa_s,
4825                                                wpa_s->pending_join_iface_addr);
4826         }
4827         if (bss) {
4828                 u8 dev_addr[ETH_ALEN];
4829
4830                 freq = bss->freq;
4831                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4832                            "from BSS table: %d MHz (SSID %s)", freq,
4833                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4834                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4835                                        dev_addr) == 0 &&
4836                     os_memcmp(wpa_s->pending_join_dev_addr,
4837                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4838                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4839                               ETH_ALEN) != 0) {
4840                         wpa_printf(MSG_DEBUG,
4841                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4842                                    MAC2STR(dev_addr),
4843                                    MAC2STR(wpa_s->pending_join_dev_addr));
4844                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4845                                   ETH_ALEN);
4846                 }
4847         }
4848         if (freq > 0) {
4849                 u16 method;
4850
4851                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4852                         wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
4853                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4854                                        "reason=FREQ_CONFLICT");
4855                         wpas_notify_p2p_group_formation_failure(
4856                                 wpa_s, "FREQ_CONFLICT");
4857                         return;
4858                 }
4859
4860                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4861                            "prior to joining an existing group (GO " MACSTR
4862                            " freq=%u MHz)",
4863                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4864                 wpa_s->pending_pd_before_join = 1;
4865
4866                 switch (wpa_s->pending_join_wps_method) {
4867                 case WPS_PIN_DISPLAY:
4868                         method = WPS_CONFIG_KEYPAD;
4869                         break;
4870                 case WPS_PIN_KEYPAD:
4871                         method = WPS_CONFIG_DISPLAY;
4872                         break;
4873                 case WPS_PBC:
4874                         method = WPS_CONFIG_PUSHBUTTON;
4875                         break;
4876                 case WPS_P2PS:
4877                         method = WPS_CONFIG_P2PS;
4878                         break;
4879                 default:
4880                         method = 0;
4881                         break;
4882                 }
4883
4884                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4885                                                wpa_s->pending_join_dev_addr) ==
4886                      method)) {
4887                         /*
4888                          * We have already performed provision discovery for
4889                          * joining the group. Proceed directly to join
4890                          * operation without duplicated provision discovery. */
4891                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4892                                    "with " MACSTR " already done - proceed to "
4893                                    "join",
4894                                    MAC2STR(wpa_s->pending_join_dev_addr));
4895                         wpa_s->pending_pd_before_join = 0;
4896                         goto start;
4897                 }
4898
4899                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4900                                       wpa_s->pending_join_dev_addr,
4901                                       NULL, method, 1,
4902                                       freq, wpa_s->user_initiated_pd) < 0) {
4903                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4904                                    "Discovery Request before joining an "
4905                                    "existing group");
4906                         wpa_s->pending_pd_before_join = 0;
4907                         goto start;
4908                 }
4909                 return;
4910         }
4911
4912         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4913         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4914         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4915         wpas_p2p_check_join_scan_limit(wpa_s);
4916         return;
4917
4918 start:
4919         /* Start join operation immediately */
4920         wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid,
4921                             wpa_s->p2p_join_ssid_len);
4922 }
4923
4924
4925 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4926                                    const u8 *ssid, size_t ssid_len)
4927 {
4928         int ret;
4929         struct wpa_driver_scan_params params;
4930         struct wpabuf *wps_ie, *ies;
4931         size_t ielen;
4932         int freqs[2] = { 0, 0 };
4933
4934         os_memset(&params, 0, sizeof(params));
4935
4936         /* P2P Wildcard SSID */
4937         params.num_ssids = 1;
4938         if (ssid && ssid_len) {
4939                 params.ssids[0].ssid = ssid;
4940                 params.ssids[0].ssid_len = ssid_len;
4941                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4942                 wpa_s->p2p_join_ssid_len = ssid_len;
4943         } else {
4944                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4945                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4946                 wpa_s->p2p_join_ssid_len = 0;
4947         }
4948
4949         wpa_s->wps->dev.p2p = 1;
4950         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4951                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4952                                         NULL);
4953         if (wps_ie == NULL) {
4954                 wpas_p2p_scan_res_join(wpa_s, NULL);
4955                 return;
4956         }
4957
4958         if (!freq) {
4959                 int oper_freq;
4960                 /*
4961                  * If freq is not provided, check the operating freq of the GO
4962                  * and use a single channel scan on if possible.
4963                  */
4964                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4965                                               wpa_s->pending_join_iface_addr);
4966                 if (oper_freq > 0)
4967                         freq = oper_freq;
4968         }
4969         if (freq > 0) {
4970                 freqs[0] = freq;
4971                 params.freqs = freqs;
4972         }
4973
4974         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4975         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4976         if (ies == NULL) {
4977                 wpabuf_free(wps_ie);
4978                 wpas_p2p_scan_res_join(wpa_s, NULL);
4979                 return;
4980         }
4981         wpabuf_put_buf(ies, wps_ie);
4982         wpabuf_free(wps_ie);
4983
4984         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4985
4986         params.p2p_probe = 1;
4987         params.extra_ies = wpabuf_head(ies);
4988         params.extra_ies_len = wpabuf_len(ies);
4989
4990         /*
4991          * Run a scan to update BSS table and start Provision Discovery once
4992          * the new scan results become available.
4993          */
4994         ret = wpa_drv_scan(wpa_s, &params);
4995         if (!ret) {
4996                 os_get_reltime(&wpa_s->scan_trigger_time);
4997                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4998                 wpa_s->own_scan_requested = 1;
4999         }
5000
5001         wpabuf_free(ies);
5002
5003         if (ret) {
5004                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5005                            "try again later");
5006                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5007                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5008                 wpas_p2p_check_join_scan_limit(wpa_s);
5009         }
5010 }
5011
5012
5013 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5014 {
5015         struct wpa_supplicant *wpa_s = eloop_ctx;
5016         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5017 }
5018
5019
5020 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5021                          const u8 *dev_addr, enum p2p_wps_method wps_method,
5022                          int auto_join, int op_freq,
5023                          const u8 *ssid, size_t ssid_len)
5024 {
5025         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5026                    MACSTR " dev " MACSTR " op_freq=%d)%s",
5027                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5028                    auto_join ? " (auto_join)" : "");
5029         if (ssid && ssid_len) {
5030                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5031                            wpa_ssid_txt(ssid, ssid_len));
5032         }
5033
5034         wpa_s->p2p_auto_pd = 0;
5035         wpa_s->p2p_auto_join = !!auto_join;
5036         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5037         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5038         wpa_s->pending_join_wps_method = wps_method;
5039
5040         /* Make sure we are not running find during connection establishment */
5041         wpas_p2p_stop_find(wpa_s);
5042
5043         wpa_s->p2p_join_scan_count = 0;
5044         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5045         return 0;
5046 }
5047
5048
5049 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5050                                const u8 *ssid, size_t ssid_len)
5051 {
5052         struct wpa_supplicant *group;
5053         struct p2p_go_neg_results res;
5054         struct wpa_bss *bss;
5055
5056         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5057         if (group == NULL)
5058                 return -1;
5059         if (group != wpa_s) {
5060                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5061                           sizeof(group->p2p_pin));
5062                 group->p2p_wps_method = wpa_s->p2p_wps_method;
5063         } else {
5064                 /*
5065                  * Need to mark the current interface for p2p_group_formation
5066                  * when a separate group interface is not used. This is needed
5067                  * to allow p2p_cancel stop a pending p2p_connect-join.
5068                  * wpas_p2p_init_group_interface() addresses this for the case
5069                  * where a separate group interface is used.
5070                  */
5071                 wpa_s->global->p2p_group_formation = wpa_s;
5072         }
5073
5074         group->p2p_in_provisioning = 1;
5075         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5076
5077         os_memset(&res, 0, sizeof(res));
5078         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5079         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5080                   ETH_ALEN);
5081         res.wps_method = wpa_s->pending_join_wps_method;
5082         if (freq && ssid && ssid_len) {
5083                 res.freq = freq;
5084                 res.ssid_len = ssid_len;
5085                 os_memcpy(res.ssid, ssid, ssid_len);
5086         } else {
5087                 if (ssid && ssid_len) {
5088                         bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
5089                                           ssid, ssid_len);
5090                 } else {
5091                         bss = wpa_bss_get_bssid_latest(
5092                                 wpa_s, wpa_s->pending_join_iface_addr);
5093                 }
5094                 if (bss) {
5095                         res.freq = bss->freq;
5096                         res.ssid_len = bss->ssid_len;
5097                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5098                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5099                                    bss->freq,
5100                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
5101                 } else if (ssid && ssid_len) {
5102                         res.ssid_len = ssid_len;
5103                         os_memcpy(res.ssid, ssid, ssid_len);
5104                         wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)",
5105                                    wpa_ssid_txt(ssid, ssid_len));
5106                 }
5107         }
5108
5109         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5110                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5111                            "starting client");
5112                 wpa_drv_cancel_remain_on_channel(wpa_s);
5113                 wpa_s->off_channel_freq = 0;
5114                 wpa_s->roc_waiting_drv_freq = 0;
5115         }
5116         wpas_start_wps_enrollee(group, &res);
5117
5118         /*
5119          * Allow a longer timeout for join-a-running-group than normal 15
5120          * second group formation timeout since the GO may not have authorized
5121          * our connection yet.
5122          */
5123         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5124         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5125                                wpa_s, NULL);
5126
5127         return 0;
5128 }
5129
5130
5131 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5132                                 int *force_freq, int *pref_freq, int go,
5133                                 unsigned int *pref_freq_list,
5134                                 unsigned int *num_pref_freq)
5135 {
5136         struct wpa_used_freq_data *freqs;
5137         int res, best_freq, num_unused;
5138         unsigned int freq_in_use = 0, num, i, max_pref_freq;
5139
5140         max_pref_freq = *num_pref_freq;
5141         *num_pref_freq = 0;
5142
5143         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5144                           sizeof(struct wpa_used_freq_data));
5145         if (!freqs)
5146                 return -1;
5147
5148         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5149                                         wpa_s->num_multichan_concurrent);
5150
5151         /*
5152          * It is possible that the total number of used frequencies is bigger
5153          * than the number of frequencies used for P2P, so get the system wide
5154          * number of unused frequencies.
5155          */
5156         num_unused = wpas_p2p_num_unused_channels(wpa_s);
5157
5158         wpa_printf(MSG_DEBUG,
5159                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5160                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
5161
5162         if (freq > 0) {
5163                 int ret;
5164                 if (go)
5165                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5166                 else
5167                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5168                 if (!ret) {
5169                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5170                             ieee80211_is_dfs(freq)) {
5171                                 /*
5172                                  * If freq is a DFS channel and DFS is offloaded
5173                                  * to the driver, allow P2P GO to use it.
5174                                  */
5175                                 wpa_printf(MSG_DEBUG,
5176                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5177                                            freq);
5178                         } else {
5179                                 wpa_printf(MSG_DEBUG,
5180                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5181                                            freq);
5182                                 res = -3;
5183                                 goto exit_free;
5184                         }
5185                 }
5186
5187                 for (i = 0; i < num; i++) {
5188                         if (freqs[i].freq == freq)
5189                                 freq_in_use = 1;
5190                 }
5191
5192                 if (num_unused <= 0 && !freq_in_use) {
5193                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5194                                    freq);
5195                         res = -2;
5196                         goto exit_free;
5197                 }
5198                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5199                            "requested channel (%u MHz)", freq);
5200                 *force_freq = freq;
5201                 goto exit_ok;
5202         }
5203
5204         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5205
5206         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5207                 enum wpa_driver_if_type iface_type;
5208
5209                 if (go)
5210                         iface_type = WPA_IF_P2P_GO;
5211                 else
5212                         iface_type = WPA_IF_P2P_CLIENT;
5213
5214                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5215                            best_freq, go);
5216
5217                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5218                                                  &max_pref_freq,
5219                                                  pref_freq_list);
5220                 if (!res && max_pref_freq > 0) {
5221                         *num_pref_freq = max_pref_freq;
5222                         i = 0;
5223                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5224                                                         pref_freq_list[i]) &&
5225                                i < *num_pref_freq) {
5226                                 wpa_printf(MSG_DEBUG,
5227                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5228                                            i, pref_freq_list[i]);
5229                                 i++;
5230                         }
5231                         if (i != *num_pref_freq) {
5232                                 best_freq = pref_freq_list[i];
5233                                 wpa_printf(MSG_DEBUG,
5234                                            "P2P: Using preferred_freq_list[%d]=%d",
5235                                            i, best_freq);
5236                         } else {
5237                                 wpa_printf(MSG_DEBUG,
5238                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5239                                 *num_pref_freq = 0;
5240                         }
5241                 } else {
5242                         wpa_printf(MSG_DEBUG,
5243                                    "P2P: No preferred frequency list available");
5244                 }
5245         }
5246
5247         /* We have a candidate frequency to use */
5248         if (best_freq > 0) {
5249                 if (*pref_freq == 0 && num_unused > 0) {
5250                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5251                                    best_freq);
5252                         *pref_freq = best_freq;
5253                 } else {
5254                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5255                                    best_freq);
5256                         *force_freq = best_freq;
5257                 }
5258         } else if (num_unused > 0) {
5259                 wpa_printf(MSG_DEBUG,
5260                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5261                 *force_freq = 0;
5262         } else {
5263                 wpa_printf(MSG_DEBUG,
5264                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5265                 res = -2;
5266                 goto exit_free;
5267         }
5268
5269 exit_ok:
5270         res = 0;
5271 exit_free:
5272         os_free(freqs);
5273         return res;
5274 }
5275
5276
5277 /**
5278  * wpas_p2p_connect - Request P2P Group Formation to be started
5279  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5280  * @peer_addr: Address of the peer P2P Device
5281  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5282  * @persistent_group: Whether to create a persistent group
5283  * @auto_join: Whether to select join vs. GO Negotiation automatically
5284  * @join: Whether to join an existing group (as a client) instead of starting
5285  *      Group Owner negotiation; @peer_addr is BSSID in that case
5286  * @auth: Whether to only authorize the connection instead of doing that and
5287  *      initiating Group Owner negotiation
5288  * @go_intent: GO Intent or -1 to use default
5289  * @freq: Frequency for the group or 0 for auto-selection
5290  * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5291  * @persistent_id: Persistent group credentials to use for forcing GO
5292  *      parameters or -1 to generate new values (SSID/passphrase)
5293  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5294  *      interoperability workaround when initiating group formation
5295  * @ht40: Start GO with 40 MHz channel width
5296  * @vht:  Start GO with VHT support
5297  * @vht_chwidth: Channel width supported by GO operating with VHT support
5298  *      (VHT_CHANWIDTH_*).
5299  * @group_ssid: Specific Group SSID for join or %NULL if not set
5300  * @group_ssid_len: Length of @group_ssid in octets
5301  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5302  *      failure, -2 on failure due to channel not currently available,
5303  *      -3 if forced channel is not supported
5304  */
5305 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5306                      const char *pin, enum p2p_wps_method wps_method,
5307                      int persistent_group, int auto_join, int join, int auth,
5308                      int go_intent, int freq, unsigned int vht_center_freq2,
5309                      int persistent_id, int pd, int ht40, int vht,
5310                      unsigned int vht_chwidth, const u8 *group_ssid,
5311                      size_t group_ssid_len)
5312 {
5313         int force_freq = 0, pref_freq = 0;
5314         int ret = 0, res;
5315         enum wpa_driver_if_type iftype;
5316         const u8 *if_addr;
5317         struct wpa_ssid *ssid = NULL;
5318         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5319
5320         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5321                 return -1;
5322
5323         if (persistent_id >= 0) {
5324                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5325                 if (ssid == NULL || ssid->disabled != 2 ||
5326                     ssid->mode != WPAS_MODE_P2P_GO)
5327                         return -1;
5328         }
5329
5330         os_free(wpa_s->global->add_psk);
5331         wpa_s->global->add_psk = NULL;
5332
5333         wpa_s->global->p2p_fail_on_wps_complete = 0;
5334         wpa_s->global->pending_p2ps_group = 0;
5335         wpa_s->global->pending_p2ps_group_freq = 0;
5336         wpa_s->p2ps_method_config_any = 0;
5337
5338         if (go_intent < 0)
5339                 go_intent = wpa_s->conf->p2p_go_intent;
5340
5341         if (!auth)
5342                 wpa_s->p2p_long_listen = 0;
5343
5344         wpa_s->p2p_wps_method = wps_method;
5345         wpa_s->p2p_persistent_group = !!persistent_group;
5346         wpa_s->p2p_persistent_id = persistent_id;
5347         wpa_s->p2p_go_intent = go_intent;
5348         wpa_s->p2p_connect_freq = freq;
5349         wpa_s->p2p_fallback_to_go_neg = 0;
5350         wpa_s->p2p_pd_before_go_neg = !!pd;
5351         wpa_s->p2p_go_ht40 = !!ht40;
5352         wpa_s->p2p_go_vht = !!vht;
5353         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5354         wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5355
5356         if (pin)
5357                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5358         else if (wps_method == WPS_PIN_DISPLAY) {
5359                 if (wps_generate_pin((unsigned int *) &ret) < 0)
5360                         return -1;
5361                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5362                                   "%08d", ret);
5363                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5364                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5365                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5366                            wpa_s->p2p_pin);
5367         } else
5368                 wpa_s->p2p_pin[0] = '\0';
5369
5370         if (join || auto_join) {
5371                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5372                 if (auth) {
5373                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5374                                    "connect a running group from " MACSTR,
5375                                    MAC2STR(peer_addr));
5376                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5377                         return ret;
5378                 }
5379                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5380                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5381                                            iface_addr) < 0) {
5382                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5383                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5384                                          dev_addr);
5385                 }
5386                 if (auto_join) {
5387                         os_get_reltime(&wpa_s->p2p_auto_started);
5388                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5389                                    "%ld.%06ld",
5390                                    wpa_s->p2p_auto_started.sec,
5391                                    wpa_s->p2p_auto_started.usec);
5392                 }
5393                 wpa_s->user_initiated_pd = 1;
5394                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5395                                   auto_join, freq,
5396                                   group_ssid, group_ssid_len) < 0)
5397                         return -1;
5398                 return ret;
5399         }
5400
5401         size = P2P_MAX_PREF_CHANNELS;
5402         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5403                                    go_intent == 15, pref_freq_list, &size);
5404         if (res)
5405                 return res;
5406         wpas_p2p_set_own_freq_preference(wpa_s,
5407                                          force_freq ? force_freq : pref_freq);
5408
5409         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5410
5411         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5412
5413         if (wpa_s->create_p2p_iface) {
5414                 /* Prepare to add a new interface for the group */
5415                 iftype = WPA_IF_P2P_GROUP;
5416                 if (go_intent == 15)
5417                         iftype = WPA_IF_P2P_GO;
5418                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5419                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5420                                    "interface for the group");
5421                         return -1;
5422                 }
5423
5424                 if_addr = wpa_s->pending_interface_addr;
5425         } else {
5426                 if (wpa_s->p2p_mgmt)
5427                         if_addr = wpa_s->parent->own_addr;
5428                 else
5429                         if_addr = wpa_s->own_addr;
5430                 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5431         }
5432
5433         if (auth) {
5434                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5435                                          go_intent, if_addr,
5436                                          force_freq, persistent_group, ssid,
5437                                          pref_freq) < 0)
5438                         return -1;
5439                 return ret;
5440         }
5441
5442         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5443                                   go_intent, if_addr, force_freq,
5444                                   persistent_group, ssid, pref_freq) < 0) {
5445                 if (wpa_s->create_p2p_iface)
5446                         wpas_p2p_remove_pending_group_interface(wpa_s);
5447                 return -1;
5448         }
5449         return ret;
5450 }
5451
5452
5453 /**
5454  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5455  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5456  * @freq: Frequency of the channel in MHz
5457  * @duration: Duration of the stay on the channel in milliseconds
5458  *
5459  * This callback is called when the driver indicates that it has started the
5460  * requested remain-on-channel duration.
5461  */
5462 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5463                                    unsigned int freq, unsigned int duration)
5464 {
5465         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5466                 return;
5467         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)",
5468                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5469                    wpa_s->roc_waiting_drv_freq, freq, duration);
5470         if (wpa_s->off_channel_freq &&
5471             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5472                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5473                               wpa_s->pending_listen_duration);
5474                 wpa_s->pending_listen_freq = 0;
5475         } else {
5476                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5477                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5478                            freq, duration);
5479         }
5480 }
5481
5482
5483 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5484 {
5485         /* Limit maximum Listen state time based on driver limitation. */
5486         if (timeout > wpa_s->max_remain_on_chan)
5487                 timeout = wpa_s->max_remain_on_chan;
5488
5489         return p2p_listen(wpa_s->global->p2p, timeout);
5490 }
5491
5492
5493 /**
5494  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5495  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5496  * @freq: Frequency of the channel in MHz
5497  *
5498  * This callback is called when the driver indicates that a remain-on-channel
5499  * operation has been completed, i.e., the duration on the requested channel
5500  * has timed out.
5501  */
5502 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5503                                           unsigned int freq)
5504 {
5505         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5506                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5507                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5508         wpas_p2p_listen_work_done(wpa_s);
5509         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5510                 return;
5511         if (wpa_s->p2p_long_listen > 0)
5512                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5513         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5514                 return; /* P2P module started a new operation */
5515         if (offchannel_pending_action_tx(wpa_s))
5516                 return;
5517         if (wpa_s->p2p_long_listen > 0) {
5518                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5519                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5520         } else {
5521                 /*
5522                  * When listen duration is over, stop listen & update p2p_state
5523                  * to IDLE.
5524                  */
5525                 p2p_stop_listen(wpa_s->global->p2p);
5526         }
5527 }
5528
5529
5530 /**
5531  * wpas_p2p_group_remove - Remove a P2P group
5532  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5533  * @ifname: Network interface name of the group interface or "*" to remove all
5534  *      groups
5535  * Returns: 0 on success, -1 on failure
5536  *
5537  * This function is used to remove a P2P group. This can be used to disconnect
5538  * from a group in which the local end is a P2P Client or to end a P2P Group in
5539  * case the local end is the Group Owner. If a virtual network interface was
5540  * created for this group, that interface will be removed. Otherwise, only the
5541  * configured P2P group network will be removed from the interface.
5542  */
5543 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5544 {
5545         struct wpa_global *global = wpa_s->global;
5546         struct wpa_supplicant *calling_wpa_s = wpa_s;
5547
5548         if (os_strcmp(ifname, "*") == 0) {
5549                 struct wpa_supplicant *prev;
5550                 wpa_s = global->ifaces;
5551                 while (wpa_s) {
5552                         prev = wpa_s;
5553                         wpa_s = wpa_s->next;
5554                         if (prev->p2p_group_interface !=
5555                             NOT_P2P_GROUP_INTERFACE ||
5556                             (prev->current_ssid &&
5557                              prev->current_ssid->p2p_group))
5558                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5559                 }
5560                 return 0;
5561         }
5562
5563         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5564                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5565                         break;
5566         }
5567
5568         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5569 }
5570
5571
5572 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5573 {
5574         unsigned int r;
5575
5576         if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5577                 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5578                 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5579                 int res;
5580
5581                 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5582                                                  &size, pref_freq_list);
5583                 if (!res && size > 0) {
5584                         i = 0;
5585                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5586                                                         pref_freq_list[i]) &&
5587                                i < size) {
5588                                 wpa_printf(MSG_DEBUG,
5589                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5590                                            i, pref_freq_list[i]);
5591                                 i++;
5592                         }
5593                         if (i != size) {
5594                                 freq = pref_freq_list[i];
5595                                 wpa_printf(MSG_DEBUG,
5596                                            "P2P: Using preferred_freq_list[%d]=%d",
5597                                            i, freq);
5598                         } else {
5599                                 wpa_printf(MSG_DEBUG,
5600                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5601                         }
5602                 } else {
5603                         wpa_printf(MSG_DEBUG,
5604                                    "P2P: No preferred frequency list available");
5605                 }
5606         }
5607
5608         if (freq == 2) {
5609                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5610                            "band");
5611                 if (wpa_s->best_24_freq > 0 &&
5612                     p2p_supported_freq_go(wpa_s->global->p2p,
5613                                           wpa_s->best_24_freq)) {
5614                         freq = wpa_s->best_24_freq;
5615                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5616                                    "channel: %d MHz", freq);
5617                 } else {
5618                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5619                                 return -1;
5620                         freq = 2412 + (r % 3) * 25;
5621                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5622                                    "channel: %d MHz", freq);
5623                 }
5624         }
5625
5626         if (freq == 5) {
5627                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5628                            "band");
5629                 if (wpa_s->best_5_freq > 0 &&
5630                     p2p_supported_freq_go(wpa_s->global->p2p,
5631                                        wpa_s->best_5_freq)) {
5632                         freq = wpa_s->best_5_freq;
5633                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5634                                    "channel: %d MHz", freq);
5635                 } else {
5636                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5637                                 return -1;
5638                         freq = 5180 + (r % 4) * 20;
5639                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5640                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5641                                            "5 GHz channel for P2P group");
5642                                 return -1;
5643                         }
5644                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5645                                    "channel: %d MHz", freq);
5646                 }
5647         }
5648
5649         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5650                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5651                     ieee80211_is_dfs(freq)) {
5652                         /*
5653                          * If freq is a DFS channel and DFS is offloaded to the
5654                          * driver, allow P2P GO to use it.
5655                          */
5656                         wpa_printf(MSG_DEBUG, "P2P: "
5657                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5658                                    __func__, freq);
5659                         return freq;
5660                 }
5661                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5662                            "(%u MHz) is not supported for P2P uses",
5663                            freq);
5664                 return -1;
5665         }
5666
5667         return freq;
5668 }
5669
5670
5671 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5672                                       const struct p2p_channels *channels,
5673                                       int freq)
5674 {
5675         if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5676             p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5677             freq_included(wpa_s, channels, freq))
5678                 return 1;
5679         return 0;
5680 }
5681
5682
5683 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5684                                             struct p2p_go_neg_results *params,
5685                                             const struct p2p_channels *channels)
5686 {
5687         unsigned int i, r;
5688
5689         /* first try some random selection of the social channels */
5690         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5691                 return;
5692
5693         for (i = 0; i < 3; i++) {
5694                 params->freq = 2412 + ((r + i) % 3) * 25;
5695                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5696                         goto out;
5697         }
5698
5699         /* try all other channels in operating class 81 */
5700         for (i = 0; i < 11; i++) {
5701                 params->freq = 2412 + i * 5;
5702
5703                 /* skip social channels; covered in the previous loop */
5704                 if (params->freq == 2412 ||
5705                     params->freq == 2437 ||
5706                     params->freq == 2462)
5707                         continue;
5708
5709                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5710                         goto out;
5711         }
5712
5713         /* try all channels in operating class 115 */
5714         for (i = 0; i < 4; i++) {
5715                 params->freq = 5180 + i * 20;
5716                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5717                     freq_included(wpa_s, channels, params->freq) &&
5718                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5719                         goto out;
5720         }
5721
5722         /* try all channels in operating class 124 */
5723         for (i = 0; i < 4; i++) {
5724                 params->freq = 5745 + i * 20;
5725                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5726                     freq_included(wpa_s, channels, params->freq) &&
5727                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5728                         goto out;
5729         }
5730
5731         /* try social channel class 180 channel 2 */
5732         params->freq = 58320 + 1 * 2160;
5733         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5734             freq_included(wpa_s, channels, params->freq) &&
5735             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5736                 goto out;
5737
5738         /* try all channels in reg. class 180 */
5739         for (i = 0; i < 4; i++) {
5740                 params->freq = 58320 + i * 2160;
5741                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5742                     freq_included(wpa_s, channels, params->freq) &&
5743                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5744                         goto out;
5745         }
5746
5747         params->freq = 0;
5748         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5749         return;
5750 out:
5751         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5752                    params->freq);
5753 }
5754
5755
5756 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5757                                    struct p2p_go_neg_results *params,
5758                                    int freq, int vht_center_freq2, int ht40,
5759                                    int vht, int max_oper_chwidth,
5760                                    const struct p2p_channels *channels)
5761 {
5762         struct wpa_used_freq_data *freqs;
5763         unsigned int cand;
5764         unsigned int num, i;
5765         int ignore_no_freqs = 0;
5766
5767         os_memset(params, 0, sizeof(*params));
5768         params->role_go = 1;
5769         params->ht40 = ht40;
5770         params->vht = vht;
5771         params->max_oper_chwidth = max_oper_chwidth;
5772         params->vht_center_freq2 = vht_center_freq2;
5773
5774         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5775                           sizeof(struct wpa_used_freq_data));
5776         if (!freqs)
5777                 return -1;
5778
5779         num = get_shared_radio_freqs_data(wpa_s, freqs,
5780                                           wpa_s->num_multichan_concurrent);
5781
5782         if (wpa_s->current_ssid &&
5783             wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5784             wpa_s->wpa_state == WPA_COMPLETED) {
5785                 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5786                            __func__);
5787
5788                 /*
5789                  * If the frequency selection is done for an active P2P GO that
5790                  * is not sharing a frequency, allow to select a new frequency
5791                  * even if there are no unused frequencies as we are about to
5792                  * move the P2P GO so its frequency can be re-used.
5793                  */
5794                 for (i = 0; i < num; i++) {
5795                         if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5796                             freqs[i].flags == 0) {
5797                                 ignore_no_freqs = 1;
5798                                 break;
5799                         }
5800                 }
5801         }
5802
5803         /* try using the forced freq */
5804         if (freq) {
5805                 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) {
5806                         wpa_printf(MSG_DEBUG,
5807                                    "P2P: Forced GO freq %d MHz not accepted",
5808                                    freq);
5809                         goto fail;
5810                 }
5811
5812                 for (i = 0; i < num; i++) {
5813                         if (freqs[i].freq == freq) {
5814                                 wpa_printf(MSG_DEBUG,
5815                                            "P2P: forced freq (%d MHz) is also shared",
5816                                            freq);
5817                                 params->freq = freq;
5818                                 goto success;
5819                         }
5820                 }
5821
5822                 if (!ignore_no_freqs &&
5823                     wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5824                         wpa_printf(MSG_DEBUG,
5825                                    "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5826                                    freq);
5827                         goto fail;
5828                 }
5829
5830                 wpa_printf(MSG_DEBUG,
5831                            "P2P: force GO freq (%d MHz) on a free channel",
5832                            freq);
5833                 params->freq = freq;
5834                 goto success;
5835         }
5836
5837         /* consider using one of the shared frequencies */
5838         if (num) {
5839                 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5840                 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5841                         wpa_printf(MSG_DEBUG,
5842                                    "P2P: Use shared freq (%d MHz) for GO",
5843                                    freq);
5844                         params->freq = cand;
5845                         goto success;
5846                 }
5847
5848                 /* try using one of the shared freqs */
5849                 for (i = 0; i < num; i++) {
5850                         if (wpas_p2p_supported_freq_go(wpa_s, channels,
5851                                                        freqs[i].freq)) {
5852                                 wpa_printf(MSG_DEBUG,
5853                                            "P2P: Use shared freq (%d MHz) for GO",
5854                                            freq);
5855                                 params->freq = freqs[i].freq;
5856                                 goto success;
5857                         }
5858                 }
5859         }
5860
5861         if (!ignore_no_freqs &&
5862             wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5863                 wpa_printf(MSG_DEBUG,
5864                            "P2P: Cannot force GO on any of the channels we are already using");
5865                 goto fail;
5866         }
5867
5868         /* try using the setting from the configuration file */
5869         if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5870             wpa_s->conf->p2p_oper_channel >= 1 &&
5871             wpa_s->conf->p2p_oper_channel <= 11 &&
5872             wpas_p2p_supported_freq_go(
5873                     wpa_s, channels,
5874                     2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5875                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5876                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5877                            "frequency %d MHz", params->freq);
5878                 goto success;
5879         }
5880
5881         if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5882              wpa_s->conf->p2p_oper_reg_class == 116 ||
5883              wpa_s->conf->p2p_oper_reg_class == 117 ||
5884              wpa_s->conf->p2p_oper_reg_class == 124 ||
5885              wpa_s->conf->p2p_oper_reg_class == 125 ||
5886              wpa_s->conf->p2p_oper_reg_class == 126 ||
5887              wpa_s->conf->p2p_oper_reg_class == 127) &&
5888             wpas_p2p_supported_freq_go(wpa_s, channels,
5889                                        5000 +
5890                                        5 * wpa_s->conf->p2p_oper_channel)) {
5891                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5892                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5893                            "frequency %d MHz", params->freq);
5894                 goto success;
5895         }
5896
5897         /* Try using best channels */
5898         if (wpa_s->conf->p2p_oper_channel == 0 &&
5899             wpa_s->best_overall_freq > 0 &&
5900             wpas_p2p_supported_freq_go(wpa_s, channels,
5901                                        wpa_s->best_overall_freq)) {
5902                 params->freq = wpa_s->best_overall_freq;
5903                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5904                            "channel %d MHz", params->freq);
5905                 goto success;
5906         }
5907
5908         if (wpa_s->conf->p2p_oper_channel == 0 &&
5909             wpa_s->best_24_freq > 0 &&
5910             wpas_p2p_supported_freq_go(wpa_s, channels,
5911                                        wpa_s->best_24_freq)) {
5912                 params->freq = wpa_s->best_24_freq;
5913                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5914                            "channel %d MHz", params->freq);
5915                 goto success;
5916         }
5917
5918         if (wpa_s->conf->p2p_oper_channel == 0 &&
5919             wpa_s->best_5_freq > 0 &&
5920             wpas_p2p_supported_freq_go(wpa_s, channels,
5921                                        wpa_s->best_5_freq)) {
5922                 params->freq = wpa_s->best_5_freq;
5923                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5924                            "channel %d MHz", params->freq);
5925                 goto success;
5926         }
5927
5928         /* try using preferred channels */
5929         cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
5930         if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5931                 params->freq = cand;
5932                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5933                            "channels", params->freq);
5934                 goto success;
5935         }
5936
5937         /* Try using one of the group common freqs */
5938         if (wpa_s->p2p_group_common_freqs) {
5939                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
5940                         cand = wpa_s->p2p_group_common_freqs[i];
5941                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5942                                 params->freq = cand;
5943                                 wpa_printf(MSG_DEBUG,
5944                                            "P2P: Use freq %d MHz common with the peer",
5945                                            params->freq);
5946                                 goto success;
5947                         }
5948                 }
5949         }
5950
5951         /* no preference, select some channel */
5952         wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
5953
5954         if (params->freq == 0) {
5955                 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
5956                 goto fail;
5957         }
5958
5959 success:
5960         os_free(freqs);
5961         return 0;
5962 fail:
5963         os_free(freqs);
5964         return -1;
5965 }
5966
5967
5968 static struct wpa_supplicant *
5969 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5970                          int go)
5971 {
5972         struct wpa_supplicant *group_wpa_s;
5973
5974         if (!wpas_p2p_create_iface(wpa_s)) {
5975                 if (wpa_s->p2p_mgmt) {
5976                         /*
5977                          * We may be called on the p2p_dev interface which
5978                          * cannot be used for group operations, so always use
5979                          * the primary interface.
5980                          */
5981                         wpa_s->parent->p2pdev = wpa_s;
5982                         wpa_s = wpa_s->parent;
5983                 }
5984                 wpa_dbg(wpa_s, MSG_DEBUG,
5985                         "P2P: Use primary interface for group operations");
5986                 wpa_s->p2p_first_connection_timeout = 0;
5987                 if (wpa_s != wpa_s->p2pdev)
5988                         wpas_p2p_clone_config_dh(wpa_s, wpa_s->p2pdev);
5989                 return wpa_s;
5990         }
5991
5992         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5993                                          WPA_IF_P2P_CLIENT) < 0) {
5994                 wpa_msg_global(wpa_s, MSG_ERROR,
5995                                "P2P: Failed to add group interface");
5996                 return NULL;
5997         }
5998         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5999         if (group_wpa_s == NULL) {
6000                 wpa_msg_global(wpa_s, MSG_ERROR,
6001                                "P2P: Failed to initialize group interface");
6002                 wpas_p2p_remove_pending_group_interface(wpa_s);
6003                 return NULL;
6004         }
6005
6006         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
6007                 group_wpa_s->ifname);
6008         group_wpa_s->p2p_first_connection_timeout = 0;
6009         return group_wpa_s;
6010 }
6011
6012
6013 /**
6014  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
6015  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
6016  * @persistent_group: Whether to create a persistent group
6017  * @freq: Frequency for the group or 0 to indicate no hardcoding
6018  * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80
6019  * @ht40: Start GO with 40 MHz channel width
6020  * @vht:  Start GO with VHT support
6021  * @vht_chwidth: channel bandwidth for GO operating with VHT support
6022  * Returns: 0 on success, -1 on failure
6023  *
6024  * This function creates a new P2P group with the local end as the Group Owner,
6025  * i.e., without using Group Owner Negotiation.
6026  */
6027 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
6028                        int freq, int vht_center_freq2, int ht40, int vht,
6029                        int max_oper_chwidth)
6030 {
6031         struct p2p_go_neg_results params;
6032
6033         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6034                 return -1;
6035
6036         os_free(wpa_s->global->add_psk);
6037         wpa_s->global->add_psk = NULL;
6038
6039         /* Make sure we are not running find during connection establishment */
6040         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6041         wpas_p2p_stop_find_oper(wpa_s);
6042
6043         freq = wpas_p2p_select_go_freq(wpa_s, freq);
6044         if (freq < 0)
6045                 return -1;
6046
6047         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6048                                     ht40, vht, max_oper_chwidth, NULL))
6049                 return -1;
6050         if (params.freq &&
6051             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
6052                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
6053                     ieee80211_is_dfs(params.freq)) {
6054                         /*
6055                          * If freq is a DFS channel and DFS is offloaded to the
6056                          * driver, allow P2P GO to use it.
6057                          */
6058                         wpa_printf(MSG_DEBUG,
6059                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
6060                                 __func__, params.freq);
6061                 } else {
6062                         wpa_printf(MSG_DEBUG,
6063                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
6064                                    params.freq);
6065                         return -1;
6066                 }
6067         }
6068         p2p_go_params(wpa_s->global->p2p, &params);
6069         params.persistent_group = persistent_group;
6070
6071         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6072         if (wpa_s == NULL)
6073                 return -1;
6074         wpas_start_wps_go(wpa_s, &params, 0);
6075
6076         return 0;
6077 }
6078
6079
6080 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6081                                  struct wpa_ssid *params, int addr_allocated,
6082                                  int freq, int force_scan)
6083 {
6084         struct wpa_ssid *ssid;
6085
6086         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6087         if (wpa_s == NULL)
6088                 return -1;
6089         if (force_scan)
6090                 os_get_reltime(&wpa_s->scan_min_time);
6091         wpa_s->p2p_last_4way_hs_fail = NULL;
6092
6093         wpa_supplicant_ap_deinit(wpa_s);
6094
6095         ssid = wpa_config_add_network(wpa_s->conf);
6096         if (ssid == NULL)
6097                 return -1;
6098         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
6099         wpa_config_set_network_defaults(ssid);
6100         ssid->temporary = 1;
6101         ssid->proto = WPA_PROTO_RSN;
6102         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
6103         ssid->group_cipher = WPA_CIPHER_CCMP;
6104         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6105         ssid->ssid = os_malloc(params->ssid_len);
6106         if (ssid->ssid == NULL) {
6107                 wpa_config_remove_network(wpa_s->conf, ssid->id);
6108                 return -1;
6109         }
6110         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6111         ssid->ssid_len = params->ssid_len;
6112         ssid->p2p_group = 1;
6113         ssid->export_keys = 1;
6114         if (params->psk_set) {
6115                 os_memcpy(ssid->psk, params->psk, 32);
6116                 ssid->psk_set = 1;
6117         }
6118         if (params->passphrase)
6119                 ssid->passphrase = os_strdup(params->passphrase);
6120
6121         wpa_s->show_group_started = 1;
6122         wpa_s->p2p_in_invitation = 1;
6123         wpa_s->p2p_invite_go_freq = freq;
6124         wpa_s->p2p_go_group_formation_completed = 0;
6125         wpa_s->global->p2p_group_formation = wpa_s;
6126
6127         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6128                              NULL);
6129         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6130                                wpas_p2p_group_formation_timeout,
6131                                wpa_s->p2pdev, NULL);
6132         wpa_supplicant_select_network(wpa_s, ssid);
6133
6134         return 0;
6135 }
6136
6137
6138 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6139                                   struct wpa_ssid *ssid, int addr_allocated,
6140                                   int force_freq, int neg_freq,
6141                                   int vht_center_freq2, int ht40,
6142                                   int vht, int max_oper_chwidth,
6143                                   const struct p2p_channels *channels,
6144                                   int connection_timeout, int force_scan)
6145 {
6146         struct p2p_go_neg_results params;
6147         int go = 0, freq;
6148
6149         if (ssid->disabled != 2 || ssid->ssid == NULL)
6150                 return -1;
6151
6152         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6153             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6154                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6155                            "already running");
6156                 if (go == 0 &&
6157                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6158                                          wpa_s->p2pdev, NULL)) {
6159                         /*
6160                          * This can happen if Invitation Response frame was lost
6161                          * and the peer (GO of a persistent group) tries to
6162                          * invite us again. Reschedule the timeout to avoid
6163                          * terminating the wait for the connection too early
6164                          * since we now know that the peer is still trying to
6165                          * invite us instead of having already started the GO.
6166                          */
6167                         wpa_printf(MSG_DEBUG,
6168                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6169                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6170                                                wpas_p2p_group_formation_timeout,
6171                                                wpa_s->p2pdev, NULL);
6172                 }
6173                 return 0;
6174         }
6175
6176         os_free(wpa_s->global->add_psk);
6177         wpa_s->global->add_psk = NULL;
6178
6179         /* Make sure we are not running find during connection establishment */
6180         wpas_p2p_stop_find_oper(wpa_s);
6181
6182         wpa_s->p2p_fallback_to_go_neg = 0;
6183
6184         if (ssid->mode == WPAS_MODE_P2P_GO) {
6185                 if (force_freq > 0) {
6186                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6187                         if (freq < 0)
6188                                 return -1;
6189                 } else {
6190                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6191                         if (freq < 0 ||
6192                             (freq > 0 && !freq_included(wpa_s, channels, freq)))
6193                                 freq = 0;
6194                 }
6195         } else if (ssid->mode == WPAS_MODE_INFRA) {
6196                 freq = neg_freq;
6197                 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6198                         struct os_reltime now;
6199                         struct wpa_bss *bss =
6200                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6201
6202                         os_get_reltime(&now);
6203                         if (bss &&
6204                             !os_reltime_expired(&now, &bss->last_update, 5) &&
6205                             freq_included(wpa_s, channels, bss->freq))
6206                                 freq = bss->freq;
6207                         else
6208                                 freq = 0;
6209                 }
6210
6211                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6212                                              force_scan);
6213         } else {
6214                 return -1;
6215         }
6216
6217         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6218                                     ht40, vht, max_oper_chwidth, channels))
6219                 return -1;
6220
6221         params.role_go = 1;
6222         params.psk_set = ssid->psk_set;
6223         if (params.psk_set)
6224                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6225         if (ssid->passphrase) {
6226                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6227                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6228                                    "persistent group");
6229                         return -1;
6230                 }
6231                 os_strlcpy(params.passphrase, ssid->passphrase,
6232                            sizeof(params.passphrase));
6233         }
6234         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6235         params.ssid_len = ssid->ssid_len;
6236         params.persistent_group = 1;
6237
6238         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6239         if (wpa_s == NULL)
6240                 return -1;
6241
6242         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6243
6244         wpa_s->p2p_first_connection_timeout = connection_timeout;
6245         wpas_start_wps_go(wpa_s, &params, 0);
6246
6247         return 0;
6248 }
6249
6250
6251 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6252                                struct wpabuf *proberesp_ies)
6253 {
6254         struct wpa_supplicant *wpa_s = ctx;
6255         if (wpa_s->ap_iface) {
6256                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6257                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6258                         wpabuf_free(beacon_ies);
6259                         wpabuf_free(proberesp_ies);
6260                         return;
6261                 }
6262                 if (beacon_ies) {
6263                         wpabuf_free(hapd->p2p_beacon_ie);
6264                         hapd->p2p_beacon_ie = beacon_ies;
6265                 }
6266                 wpabuf_free(hapd->p2p_probe_resp_ie);
6267                 hapd->p2p_probe_resp_ie = proberesp_ies;
6268         } else {
6269                 wpabuf_free(beacon_ies);
6270                 wpabuf_free(proberesp_ies);
6271         }
6272         wpa_supplicant_ap_update_beacon(wpa_s);
6273 }
6274
6275
6276 static void wpas_p2p_idle_update(void *ctx, int idle)
6277 {
6278         struct wpa_supplicant *wpa_s = ctx;
6279         if (!wpa_s->ap_iface)
6280                 return;
6281         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6282         if (idle) {
6283                 if (wpa_s->global->p2p_fail_on_wps_complete &&
6284                     wpa_s->p2p_in_provisioning) {
6285                         wpas_p2p_grpform_fail_after_wps(wpa_s);
6286                         return;
6287                 }
6288                 wpas_p2p_set_group_idle_timeout(wpa_s);
6289         } else
6290                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6291 }
6292
6293
6294 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6295                                        struct wpa_ssid *ssid)
6296 {
6297         struct p2p_group *group;
6298         struct p2p_group_config *cfg;
6299
6300         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6301                 return NULL;
6302
6303         cfg = os_zalloc(sizeof(*cfg));
6304         if (cfg == NULL)
6305                 return NULL;
6306
6307         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6308                 cfg->persistent_group = 2;
6309         else if (ssid->p2p_persistent_group)
6310                 cfg->persistent_group = 1;
6311         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6312         if (wpa_s->max_stations &&
6313             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6314                 cfg->max_clients = wpa_s->max_stations;
6315         else
6316                 cfg->max_clients = wpa_s->conf->max_num_sta;
6317         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6318         cfg->ssid_len = ssid->ssid_len;
6319         cfg->freq = ssid->frequency;
6320         cfg->cb_ctx = wpa_s;
6321         cfg->ie_update = wpas_p2p_ie_update;
6322         cfg->idle_update = wpas_p2p_idle_update;
6323
6324         group = p2p_group_init(wpa_s->global->p2p, cfg);
6325         if (group == NULL)
6326                 os_free(cfg);
6327         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6328                 p2p_group_notif_formation_done(group);
6329         wpa_s->p2p_group = group;
6330         return group;
6331 }
6332
6333
6334 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6335                           int registrar)
6336 {
6337         struct wpa_ssid *ssid = wpa_s->current_ssid;
6338
6339         if (!wpa_s->p2p_in_provisioning) {
6340                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6341                            "provisioning not in progress");
6342                 return;
6343         }
6344
6345         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6346                 u8 go_dev_addr[ETH_ALEN];
6347                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6348                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6349                                           ssid->ssid_len);
6350                 /* Clear any stored provisioning info */
6351                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6352         }
6353
6354         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->p2pdev,
6355                              NULL);
6356         wpa_s->p2p_go_group_formation_completed = 1;
6357         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6358                 /*
6359                  * Use a separate timeout for initial data connection to
6360                  * complete to allow the group to be removed automatically if
6361                  * something goes wrong in this step before the P2P group idle
6362                  * timeout mechanism is taken into use.
6363                  */
6364                 wpa_dbg(wpa_s, MSG_DEBUG,
6365                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6366                         P2P_MAX_INITIAL_CONN_WAIT);
6367                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6368                                        wpas_p2p_group_formation_timeout,
6369                                        wpa_s->p2pdev, NULL);
6370                 /* Complete group formation on successful data connection. */
6371                 wpa_s->p2p_go_group_formation_completed = 0;
6372         } else if (ssid) {
6373                 /*
6374                  * Use a separate timeout for initial data connection to
6375                  * complete to allow the group to be removed automatically if
6376                  * the client does not complete data connection successfully.
6377                  */
6378                 wpa_dbg(wpa_s, MSG_DEBUG,
6379                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6380                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6381                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6382                                        wpas_p2p_group_formation_timeout,
6383                                        wpa_s->p2pdev, NULL);
6384                 /*
6385                  * Complete group formation on first successful data connection
6386                  */
6387                 wpa_s->p2p_go_group_formation_completed = 0;
6388         }
6389         if (wpa_s->global->p2p)
6390                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6391         wpas_group_formation_completed(wpa_s, 1, 0);
6392 }
6393
6394
6395 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6396                          struct wps_event_fail *fail)
6397 {
6398         if (!wpa_s->p2p_in_provisioning) {
6399                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6400                            "provisioning not in progress");
6401                 return;
6402         }
6403
6404         if (wpa_s->go_params) {
6405                 p2p_clear_provisioning_info(
6406                         wpa_s->global->p2p,
6407                         wpa_s->go_params->peer_device_addr);
6408         }
6409
6410         wpas_notify_p2p_wps_failed(wpa_s, fail);
6411
6412         if (wpa_s == wpa_s->global->p2p_group_formation) {
6413                 /*
6414                  * Allow some time for the failed WPS negotiation exchange to
6415                  * complete, but remove the group since group formation cannot
6416                  * succeed after provisioning failure.
6417                  */
6418                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6419                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6420                 eloop_deplete_timeout(0, 50000,
6421                                       wpas_p2p_group_formation_timeout,
6422                                       wpa_s->p2pdev, NULL);
6423         }
6424 }
6425
6426
6427 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6428 {
6429         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6430             !wpa_s->p2p_in_provisioning)
6431                 return 0;
6432
6433         wpas_p2p_grpform_fail_after_wps(wpa_s);
6434
6435         return 1;
6436 }
6437
6438
6439 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6440                        const char *config_method,
6441                        enum wpas_p2p_prov_disc_use use,
6442                        struct p2ps_provision *p2ps_prov)
6443 {
6444         u16 config_methods;
6445
6446         wpa_s->global->pending_p2ps_group = 0;
6447         wpa_s->global->pending_p2ps_group_freq = 0;
6448         wpa_s->p2p_fallback_to_go_neg = 0;
6449         wpa_s->pending_pd_use = NORMAL_PD;
6450         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6451                 p2ps_prov->conncap = p2ps_group_capability(
6452                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6453                         &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6454
6455                 wpa_printf(MSG_DEBUG,
6456                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6457                            __func__, p2ps_prov->conncap,
6458                            p2ps_prov->adv_id, p2ps_prov->conncap,
6459                            p2ps_prov->status, p2ps_prov->info);
6460
6461                 config_methods = 0;
6462         } else if (os_strncmp(config_method, "display", 7) == 0)
6463                 config_methods = WPS_CONFIG_DISPLAY;
6464         else if (os_strncmp(config_method, "keypad", 6) == 0)
6465                 config_methods = WPS_CONFIG_KEYPAD;
6466         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6467                  os_strncmp(config_method, "pushbutton", 10) == 0)
6468                 config_methods = WPS_CONFIG_PUSHBUTTON;
6469         else {
6470                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6471                 os_free(p2ps_prov);
6472                 return -1;
6473         }
6474
6475         if (use == WPAS_P2P_PD_AUTO) {
6476                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6477                 wpa_s->pending_pd_config_methods = config_methods;
6478                 wpa_s->p2p_auto_pd = 1;
6479                 wpa_s->p2p_auto_join = 0;
6480                 wpa_s->pending_pd_before_join = 0;
6481                 wpa_s->auto_pd_scan_retry = 0;
6482                 wpas_p2p_stop_find(wpa_s);
6483                 wpa_s->p2p_join_scan_count = 0;
6484                 os_get_reltime(&wpa_s->p2p_auto_started);
6485                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6486                            wpa_s->p2p_auto_started.sec,
6487                            wpa_s->p2p_auto_started.usec);
6488                 wpas_p2p_join_scan(wpa_s, NULL);
6489                 return 0;
6490         }
6491
6492         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6493                 os_free(p2ps_prov);
6494                 return -1;
6495         }
6496
6497         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6498                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6499                                  0, 1);
6500 }
6501
6502
6503 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6504                               char *end)
6505 {
6506         return p2p_scan_result_text(ies, ies_len, buf, end);
6507 }
6508
6509
6510 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6511 {
6512         if (!offchannel_pending_action_tx(wpa_s))
6513                 return;
6514
6515         if (wpa_s->p2p_send_action_work) {
6516                 wpas_p2p_free_send_action_work(wpa_s);
6517                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
6518                                      wpa_s, NULL);
6519                 offchannel_send_action_done(wpa_s);
6520         }
6521
6522         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6523                    "operation request");
6524         offchannel_clear_pending_action_tx(wpa_s);
6525 }
6526
6527
6528 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6529                   enum p2p_discovery_type type,
6530                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6531                   const u8 *dev_id, unsigned int search_delay,
6532                   u8 seek_cnt, const char **seek_string, int freq)
6533 {
6534         wpas_p2p_clear_pending_action_tx(wpa_s);
6535         wpa_s->p2p_long_listen = 0;
6536
6537         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6538             wpa_s->p2p_in_provisioning)
6539                 return -1;
6540
6541         wpa_supplicant_cancel_sched_scan(wpa_s);
6542
6543         return p2p_find(wpa_s->global->p2p, timeout, type,
6544                         num_req_dev_types, req_dev_types, dev_id,
6545                         search_delay, seek_cnt, seek_string, freq);
6546 }
6547
6548
6549 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6550                                             struct wpa_scan_results *scan_res)
6551 {
6552         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6553
6554         if (wpa_s->p2p_scan_work) {
6555                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6556                 wpa_s->p2p_scan_work = NULL;
6557                 radio_work_done(work);
6558         }
6559
6560         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6561                 return;
6562
6563         /*
6564          * Indicate that results have been processed so that the P2P module can
6565          * continue pending tasks.
6566          */
6567         p2p_scan_res_handled(wpa_s->global->p2p);
6568 }
6569
6570
6571 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6572 {
6573         wpas_p2p_clear_pending_action_tx(wpa_s);
6574         wpa_s->p2p_long_listen = 0;
6575         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6576         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6577
6578         if (wpa_s->global->p2p)
6579                 p2p_stop_find(wpa_s->global->p2p);
6580
6581         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6582                 wpa_printf(MSG_DEBUG,
6583                            "P2P: Do not consider the scan results after stop_find");
6584                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6585         }
6586 }
6587
6588
6589 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6590 {
6591         wpas_p2p_stop_find_oper(wpa_s);
6592         if (!wpa_s->global->pending_group_iface_for_p2ps)
6593                 wpas_p2p_remove_pending_group_interface(wpa_s);
6594 }
6595
6596
6597 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6598 {
6599         struct wpa_supplicant *wpa_s = eloop_ctx;
6600         wpa_s->p2p_long_listen = 0;
6601 }
6602
6603
6604 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6605 {
6606         int res;
6607
6608         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6609                 return -1;
6610
6611         wpa_supplicant_cancel_sched_scan(wpa_s);
6612         wpas_p2p_clear_pending_action_tx(wpa_s);
6613
6614         if (timeout == 0) {
6615                 /*
6616                  * This is a request for unlimited Listen state. However, at
6617                  * least for now, this is mapped to a Listen state for one
6618                  * hour.
6619                  */
6620                 timeout = 3600;
6621         }
6622         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6623         wpa_s->p2p_long_listen = 0;
6624
6625         /*
6626          * Stop previous find/listen operation to avoid trying to request a new
6627          * remain-on-channel operation while the driver is still running the
6628          * previous one.
6629          */
6630         if (wpa_s->global->p2p)
6631                 p2p_stop_find(wpa_s->global->p2p);
6632
6633         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6634         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6635                 wpa_s->p2p_long_listen = timeout * 1000;
6636                 eloop_register_timeout(timeout, 0,
6637                                        wpas_p2p_long_listen_timeout,
6638                                        wpa_s, NULL);
6639         }
6640
6641         return res;
6642 }
6643
6644
6645 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6646                           u8 *buf, size_t len, int p2p_group)
6647 {
6648         struct wpabuf *p2p_ie;
6649         int ret;
6650
6651         if (wpa_s->global->p2p_disabled)
6652                 return -1;
6653         /*
6654          * Advertize mandatory cross connection capability even on
6655          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6656          */
6657         if (wpa_s->conf->p2p_disabled && p2p_group)
6658                 return -1;
6659         if (wpa_s->global->p2p == NULL)
6660                 return -1;
6661         if (bss == NULL)
6662                 return -1;
6663
6664         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6665         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6666                                p2p_group, p2p_ie);
6667         wpabuf_free(p2p_ie);
6668
6669         return ret;
6670 }
6671
6672
6673 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6674                           const u8 *dst, const u8 *bssid,
6675                           const u8 *ie, size_t ie_len,
6676                           unsigned int rx_freq, int ssi_signal)
6677 {
6678         if (wpa_s->global->p2p_disabled)
6679                 return 0;
6680         if (wpa_s->global->p2p == NULL)
6681                 return 0;
6682
6683         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6684                                  ie, ie_len, rx_freq)) {
6685         case P2P_PREQ_NOT_P2P:
6686                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6687                                  ssi_signal);
6688                 /* fall through */
6689         case P2P_PREQ_MALFORMED:
6690         case P2P_PREQ_NOT_LISTEN:
6691         case P2P_PREQ_NOT_PROCESSED:
6692         default: /* make gcc happy */
6693                 return 0;
6694         case P2P_PREQ_PROCESSED:
6695                 return 1;
6696         }
6697 }
6698
6699
6700 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6701                         const u8 *sa, const u8 *bssid,
6702                         u8 category, const u8 *data, size_t len, int freq)
6703 {
6704         if (wpa_s->global->p2p_disabled)
6705                 return;
6706         if (wpa_s->global->p2p == NULL)
6707                 return;
6708
6709         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6710                       freq);
6711 }
6712
6713
6714 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6715 {
6716         if (wpa_s->global->p2p_disabled)
6717                 return;
6718         if (wpa_s->global->p2p == NULL)
6719                 return;
6720
6721         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6722 }
6723
6724
6725 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6726 {
6727         p2p_group_deinit(wpa_s->p2p_group);
6728         wpa_s->p2p_group = NULL;
6729
6730         wpa_s->ap_configured_cb = NULL;
6731         wpa_s->ap_configured_cb_ctx = NULL;
6732         wpa_s->ap_configured_cb_data = NULL;
6733         wpa_s->connect_without_scan = NULL;
6734 }
6735
6736
6737 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6738 {
6739         wpa_s->p2p_long_listen = 0;
6740
6741         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6742                 return -1;
6743
6744         return p2p_reject(wpa_s->global->p2p, addr);
6745 }
6746
6747
6748 /* Invite to reinvoke a persistent group */
6749 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6750                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6751                     int vht_center_freq2, int ht40, int vht, int max_chwidth,
6752                     int pref_freq)
6753 {
6754         enum p2p_invite_role role;
6755         u8 *bssid = NULL;
6756         int force_freq = 0;
6757         int res;
6758         int no_pref_freq_given = pref_freq == 0;
6759         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6760
6761         wpa_s->global->p2p_invite_group = NULL;
6762         if (peer_addr)
6763                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6764         else
6765                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6766
6767         wpa_s->p2p_persistent_go_freq = freq;
6768         wpa_s->p2p_go_ht40 = !!ht40;
6769         wpa_s->p2p_go_vht = !!vht;
6770         wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
6771         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
6772         if (ssid->mode == WPAS_MODE_P2P_GO) {
6773                 role = P2P_INVITE_ROLE_GO;
6774                 if (peer_addr == NULL) {
6775                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6776                                    "address in invitation command");
6777                         return -1;
6778                 }
6779                 if (wpas_p2p_create_iface(wpa_s)) {
6780                         if (wpas_p2p_add_group_interface(wpa_s,
6781                                                          WPA_IF_P2P_GO) < 0) {
6782                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6783                                            "allocate a new interface for the "
6784                                            "group");
6785                                 return -1;
6786                         }
6787                         bssid = wpa_s->pending_interface_addr;
6788                 } else if (wpa_s->p2p_mgmt)
6789                         bssid = wpa_s->parent->own_addr;
6790                 else
6791                         bssid = wpa_s->own_addr;
6792         } else {
6793                 role = P2P_INVITE_ROLE_CLIENT;
6794                 peer_addr = ssid->bssid;
6795         }
6796         wpa_s->pending_invite_ssid_id = ssid->id;
6797
6798         size = P2P_MAX_PREF_CHANNELS;
6799         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6800                                    role == P2P_INVITE_ROLE_GO,
6801                                    pref_freq_list, &size);
6802         if (res)
6803                 return res;
6804
6805         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6806                 return -1;
6807
6808         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6809
6810         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6811             no_pref_freq_given && pref_freq > 0 &&
6812             wpa_s->num_multichan_concurrent > 1 &&
6813             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6814                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6815                            pref_freq);
6816                 pref_freq = 0;
6817         }
6818
6819         /*
6820          * Stop any find/listen operations before invitation and possibly
6821          * connection establishment.
6822          */
6823         wpas_p2p_stop_find_oper(wpa_s);
6824
6825         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6826                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6827                           1, pref_freq, -1);
6828 }
6829
6830
6831 /* Invite to join an active group */
6832 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6833                           const u8 *peer_addr, const u8 *go_dev_addr)
6834 {
6835         struct wpa_global *global = wpa_s->global;
6836         enum p2p_invite_role role;
6837         u8 *bssid = NULL;
6838         struct wpa_ssid *ssid;
6839         int persistent;
6840         int freq = 0, force_freq = 0, pref_freq = 0;
6841         int res;
6842         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6843
6844         wpa_s->p2p_persistent_go_freq = 0;
6845         wpa_s->p2p_go_ht40 = 0;
6846         wpa_s->p2p_go_vht = 0;
6847         wpa_s->p2p_go_vht_center_freq2 = 0;
6848         wpa_s->p2p_go_max_oper_chwidth = 0;
6849
6850         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6851                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6852                         break;
6853         }
6854         if (wpa_s == NULL) {
6855                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6856                 return -1;
6857         }
6858
6859         ssid = wpa_s->current_ssid;
6860         if (ssid == NULL) {
6861                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6862                            "invitation");
6863                 return -1;
6864         }
6865
6866         wpa_s->global->p2p_invite_group = wpa_s;
6867         persistent = ssid->p2p_persistent_group &&
6868                 wpas_p2p_get_persistent(wpa_s->p2pdev, peer_addr,
6869                                         ssid->ssid, ssid->ssid_len);
6870
6871         if (ssid->mode == WPAS_MODE_P2P_GO) {
6872                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6873                 bssid = wpa_s->own_addr;
6874                 if (go_dev_addr == NULL)
6875                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6876                 freq = ssid->frequency;
6877         } else {
6878                 role = P2P_INVITE_ROLE_CLIENT;
6879                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6880                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6881                                    "invite to current group");
6882                         return -1;
6883                 }
6884                 bssid = wpa_s->bssid;
6885                 if (go_dev_addr == NULL &&
6886                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6887                         go_dev_addr = wpa_s->go_dev_addr;
6888                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6889                         (int) wpa_s->assoc_freq;
6890         }
6891         wpa_s->p2pdev->pending_invite_ssid_id = -1;
6892
6893         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6894                 return -1;
6895
6896         size = P2P_MAX_PREF_CHANNELS;
6897         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6898                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
6899                                    pref_freq_list, &size);
6900         if (res)
6901                 return res;
6902         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6903
6904         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6905                           ssid->ssid, ssid->ssid_len, force_freq,
6906                           go_dev_addr, persistent, pref_freq, -1);
6907 }
6908
6909
6910 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6911 {
6912         struct wpa_ssid *ssid = wpa_s->current_ssid;
6913         u8 go_dev_addr[ETH_ALEN];
6914         int network_id = -1;
6915         int persistent;
6916         int freq;
6917         u8 ip[3 * 4];
6918         char ip_addr[100];
6919
6920         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6921                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6922                                      wpa_s->p2pdev, NULL);
6923         }
6924
6925         if (!wpa_s->show_group_started || !ssid)
6926                 return;
6927
6928         wpa_s->show_group_started = 0;
6929         if (!wpa_s->p2p_go_group_formation_completed &&
6930             wpa_s->global->p2p_group_formation == wpa_s) {
6931                 wpa_dbg(wpa_s, MSG_DEBUG,
6932                         "P2P: Marking group formation completed on client on data connection");
6933                 wpa_s->p2p_go_group_formation_completed = 1;
6934                 wpa_s->global->p2p_group_formation = NULL;
6935                 wpa_s->p2p_in_provisioning = 0;
6936                 wpa_s->p2p_in_invitation = 0;
6937         }
6938
6939         os_memset(go_dev_addr, 0, ETH_ALEN);
6940         if (ssid->bssid_set)
6941                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6942         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6943                                                ssid->ssid_len);
6944         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6945
6946         if (wpa_s->global->p2p_group_formation == wpa_s)
6947                 wpa_s->global->p2p_group_formation = NULL;
6948
6949         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6950                 (int) wpa_s->assoc_freq;
6951
6952         ip_addr[0] = '\0';
6953         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6954                 int res;
6955
6956                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6957                                   " ip_addr=%u.%u.%u.%u "
6958                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6959                                   ip[0], ip[1], ip[2], ip[3],
6960                                   ip[4], ip[5], ip[6], ip[7],
6961                                   ip[8], ip[9], ip[10], ip[11]);
6962                 if (os_snprintf_error(sizeof(ip_addr), res))
6963                         ip_addr[0] = '\0';
6964         }
6965
6966         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6967                                ssid->passphrase == NULL && ssid->psk_set ?
6968                                ssid->psk : NULL,
6969                                ssid->passphrase, go_dev_addr, persistent,
6970                                ip_addr);
6971
6972         if (persistent)
6973                 network_id = wpas_p2p_store_persistent_group(wpa_s->p2pdev,
6974                                                              ssid, go_dev_addr);
6975         if (network_id < 0)
6976                 network_id = ssid->id;
6977         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6978 }
6979
6980
6981 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6982                           u32 interval1, u32 duration2, u32 interval2)
6983 {
6984         int ret;
6985
6986         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6987                 return -1;
6988
6989         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6990             wpa_s->current_ssid == NULL ||
6991             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6992                 return -1;
6993
6994         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6995                                wpa_s->own_addr, wpa_s->assoc_freq,
6996                                duration1, interval1, duration2, interval2);
6997         if (ret == 0)
6998                 wpa_s->waiting_presence_resp = 1;
6999
7000         return ret;
7001 }
7002
7003
7004 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
7005                         unsigned int interval)
7006 {
7007         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7008                 return -1;
7009
7010         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
7011 }
7012
7013
7014 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
7015 {
7016         if (wpa_s->current_ssid == NULL) {
7017                 /*
7018                  * current_ssid can be cleared when P2P client interface gets
7019                  * disconnected, so assume this interface was used as P2P
7020                  * client.
7021                  */
7022                 return 1;
7023         }
7024         return wpa_s->current_ssid->p2p_group &&
7025                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
7026 }
7027
7028
7029 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
7030 {
7031         struct wpa_supplicant *wpa_s = eloop_ctx;
7032
7033         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
7034                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
7035                            "disabled");
7036                 return;
7037         }
7038
7039         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
7040                    "group");
7041         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7042 }
7043
7044
7045 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7046 {
7047         int timeout;
7048
7049         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7050                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7051
7052         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7053                 return;
7054
7055         timeout = wpa_s->conf->p2p_group_idle;
7056         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7057             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7058             timeout = P2P_MAX_CLIENT_IDLE;
7059
7060         if (timeout == 0)
7061                 return;
7062
7063         if (timeout < 0) {
7064                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7065                         timeout = 0; /* special client mode no-timeout */
7066                 else
7067                         return;
7068         }
7069
7070         if (wpa_s->p2p_in_provisioning) {
7071                 /*
7072                  * Use the normal group formation timeout during the
7073                  * provisioning phase to avoid terminating this process too
7074                  * early due to group idle timeout.
7075                  */
7076                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7077                            "during provisioning");
7078                 return;
7079         }
7080
7081         if (wpa_s->show_group_started) {
7082                 /*
7083                  * Use the normal group formation timeout between the end of
7084                  * the provisioning phase and completion of 4-way handshake to
7085                  * avoid terminating this process too early due to group idle
7086                  * timeout.
7087                  */
7088                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7089                            "while waiting for initial 4-way handshake to "
7090                            "complete");
7091                 return;
7092         }
7093
7094         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7095                    timeout);
7096         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7097                                wpa_s, NULL);
7098 }
7099
7100
7101 /* Returns 1 if the interface was removed */
7102 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7103                           u16 reason_code, const u8 *ie, size_t ie_len,
7104                           int locally_generated)
7105 {
7106         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7107                 return 0;
7108
7109         if (!locally_generated)
7110                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7111                                  ie_len);
7112
7113         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7114             wpa_s->current_ssid &&
7115             wpa_s->current_ssid->p2p_group &&
7116             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7117                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7118                            "session is ending");
7119                 if (wpas_p2p_group_delete(wpa_s,
7120                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7121                     > 0)
7122                         return 1;
7123         }
7124
7125         return 0;
7126 }
7127
7128
7129 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7130                              u16 reason_code, const u8 *ie, size_t ie_len,
7131                              int locally_generated)
7132 {
7133         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7134                 return;
7135
7136         if (!locally_generated)
7137                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7138                                    ie_len);
7139 }
7140
7141
7142 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7143 {
7144         struct p2p_data *p2p = wpa_s->global->p2p;
7145
7146         if (p2p == NULL)
7147                 return;
7148
7149         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7150                 return;
7151
7152         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7153                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7154
7155         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7156                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7157
7158         if (wpa_s->wps &&
7159             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7160                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7161
7162         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7163                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7164
7165         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7166                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7167                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7168                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7169                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7170         }
7171
7172         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7173                 p2p_set_sec_dev_types(p2p,
7174                                       (void *) wpa_s->conf->sec_device_type,
7175                                       wpa_s->conf->num_sec_device_types);
7176
7177         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7178                 int i;
7179                 p2p_remove_wps_vendor_extensions(p2p);
7180                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7181                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7182                                 continue;
7183                         p2p_add_wps_vendor_extension(
7184                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
7185                 }
7186         }
7187
7188         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7189             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7190                 char country[3];
7191                 country[0] = wpa_s->conf->country[0];
7192                 country[1] = wpa_s->conf->country[1];
7193                 country[2] = 0x04;
7194                 p2p_set_country(p2p, country);
7195         }
7196
7197         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7198                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7199                                      wpa_s->conf->p2p_ssid_postfix ?
7200                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7201                                      0);
7202         }
7203
7204         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7205                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7206
7207         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7208                 u8 reg_class, channel;
7209                 int ret;
7210                 unsigned int r;
7211                 u8 channel_forced;
7212
7213                 if (wpa_s->conf->p2p_listen_reg_class &&
7214                     wpa_s->conf->p2p_listen_channel) {
7215                         reg_class = wpa_s->conf->p2p_listen_reg_class;
7216                         channel = wpa_s->conf->p2p_listen_channel;
7217                         channel_forced = 1;
7218                 } else {
7219                         reg_class = 81;
7220                         /*
7221                          * Pick one of the social channels randomly as the
7222                          * listen channel.
7223                          */
7224                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7225                                 channel = 1;
7226                         else
7227                                 channel = 1 + (r % 3) * 5;
7228                         channel_forced = 0;
7229                 }
7230                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7231                                              channel_forced);
7232                 if (ret)
7233                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7234                                    "failed: %d", ret);
7235         }
7236         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7237                 u8 op_reg_class, op_channel, cfg_op_channel;
7238                 int ret = 0;
7239                 unsigned int r;
7240                 if (wpa_s->conf->p2p_oper_reg_class &&
7241                     wpa_s->conf->p2p_oper_channel) {
7242                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7243                         op_channel = wpa_s->conf->p2p_oper_channel;
7244                         cfg_op_channel = 1;
7245                 } else {
7246                         op_reg_class = 81;
7247                         /*
7248                          * Use random operation channel from (1, 6, 11)
7249                          *if no other preference is indicated.
7250                          */
7251                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7252                                 op_channel = 1;
7253                         else
7254                                 op_channel = 1 + (r % 3) * 5;
7255                         cfg_op_channel = 0;
7256                 }
7257                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7258                                            cfg_op_channel);
7259                 if (ret)
7260                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7261                                    "failed: %d", ret);
7262         }
7263
7264         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7265                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7266                                       wpa_s->conf->p2p_pref_chan) < 0) {
7267                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7268                                    "update failed");
7269                 }
7270
7271                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7272                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7273                                    "update failed");
7274                 }
7275         }
7276
7277         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7278                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7279 }
7280
7281
7282 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7283                      int duration)
7284 {
7285         if (!wpa_s->ap_iface)
7286                 return -1;
7287         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7288                                    duration);
7289 }
7290
7291
7292 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7293 {
7294         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7295                 return -1;
7296
7297         wpa_s->global->cross_connection = enabled;
7298         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7299
7300         if (!enabled) {
7301                 struct wpa_supplicant *iface;
7302
7303                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7304                 {
7305                         if (iface->cross_connect_enabled == 0)
7306                                 continue;
7307
7308                         iface->cross_connect_enabled = 0;
7309                         iface->cross_connect_in_use = 0;
7310                         wpa_msg_global(iface->p2pdev, MSG_INFO,
7311                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7312                                        iface->ifname,
7313                                        iface->cross_connect_uplink);
7314                 }
7315         }
7316
7317         return 0;
7318 }
7319
7320
7321 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7322 {
7323         struct wpa_supplicant *iface;
7324
7325         if (!uplink->global->cross_connection)
7326                 return;
7327
7328         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7329                 if (!iface->cross_connect_enabled)
7330                         continue;
7331                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7332                     0)
7333                         continue;
7334                 if (iface->ap_iface == NULL)
7335                         continue;
7336                 if (iface->cross_connect_in_use)
7337                         continue;
7338
7339                 iface->cross_connect_in_use = 1;
7340                 wpa_msg_global(iface->p2pdev, MSG_INFO,
7341                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7342                                iface->ifname, iface->cross_connect_uplink);
7343         }
7344 }
7345
7346
7347 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7348 {
7349         struct wpa_supplicant *iface;
7350
7351         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7352                 if (!iface->cross_connect_enabled)
7353                         continue;
7354                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7355                     0)
7356                         continue;
7357                 if (!iface->cross_connect_in_use)
7358                         continue;
7359
7360                 wpa_msg_global(iface->p2pdev, MSG_INFO,
7361                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7362                                iface->ifname, iface->cross_connect_uplink);
7363                 iface->cross_connect_in_use = 0;
7364         }
7365 }
7366
7367
7368 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7369 {
7370         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7371             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7372             wpa_s->cross_connect_disallowed)
7373                 wpas_p2p_disable_cross_connect(wpa_s);
7374         else
7375                 wpas_p2p_enable_cross_connect(wpa_s);
7376         if (!wpa_s->ap_iface &&
7377             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7378                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7379 }
7380
7381
7382 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7383 {
7384         wpas_p2p_disable_cross_connect(wpa_s);
7385         if (!wpa_s->ap_iface &&
7386             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7387                                          wpa_s, NULL))
7388                 wpas_p2p_set_group_idle_timeout(wpa_s);
7389 }
7390
7391
7392 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7393 {
7394         struct wpa_supplicant *iface;
7395
7396         if (!wpa_s->global->cross_connection)
7397                 return;
7398
7399         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7400                 if (iface == wpa_s)
7401                         continue;
7402                 if (iface->drv_flags &
7403                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7404                         continue;
7405                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7406                     iface != wpa_s->parent)
7407                         continue;
7408
7409                 wpa_s->cross_connect_enabled = 1;
7410                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7411                            sizeof(wpa_s->cross_connect_uplink));
7412                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7413                            "%s to %s whenever uplink is available",
7414                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7415
7416                 if (iface->ap_iface || iface->current_ssid == NULL ||
7417                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7418                     iface->cross_connect_disallowed ||
7419                     iface->wpa_state != WPA_COMPLETED)
7420                         break;
7421
7422                 wpa_s->cross_connect_in_use = 1;
7423                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
7424                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7425                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7426                 break;
7427         }
7428 }
7429
7430
7431 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7432 {
7433         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7434             !wpa_s->p2p_in_provisioning)
7435                 return 0; /* not P2P client operation */
7436
7437         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7438                    "session overlap");
7439         if (wpa_s != wpa_s->p2pdev)
7440                 wpa_msg_ctrl(wpa_s->p2pdev, MSG_INFO, WPS_EVENT_OVERLAP);
7441         wpas_p2p_group_formation_failed(wpa_s, 0);
7442         return 1;
7443 }
7444
7445
7446 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7447 {
7448         struct wpa_supplicant *wpa_s = eloop_ctx;
7449         wpas_p2p_notif_pbc_overlap(wpa_s);
7450 }
7451
7452
7453 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7454                                   enum wpas_p2p_channel_update_trig trig)
7455 {
7456         struct p2p_channels chan, cli_chan;
7457         struct wpa_used_freq_data *freqs = NULL;
7458         unsigned int num = wpa_s->num_multichan_concurrent;
7459
7460         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7461                 return;
7462
7463         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7464         if (!freqs)
7465                 return;
7466
7467         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7468
7469         os_memset(&chan, 0, sizeof(chan));
7470         os_memset(&cli_chan, 0, sizeof(cli_chan));
7471         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7472                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7473                            "channel list");
7474                 return;
7475         }
7476
7477         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7478
7479         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7480
7481         /*
7482          * The used frequencies map changed, so it is possible that a GO is
7483          * using a channel that is no longer valid for P2P use. It is also
7484          * possible that due to policy consideration, it would be preferable to
7485          * move it to a frequency already used by other station interfaces.
7486          */
7487         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7488
7489         os_free(freqs);
7490 }
7491
7492
7493 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7494                                      struct wpa_scan_results *scan_res)
7495 {
7496         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7497 }
7498
7499
7500 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7501 {
7502         struct wpa_global *global = wpa_s->global;
7503         int found = 0;
7504         const u8 *peer;
7505
7506         if (global->p2p == NULL)
7507                 return -1;
7508
7509         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7510
7511         if (wpa_s->pending_interface_name[0] &&
7512             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7513                 found = 1;
7514
7515         peer = p2p_get_go_neg_peer(global->p2p);
7516         if (peer) {
7517                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7518                            MACSTR, MAC2STR(peer));
7519                 p2p_unauthorize(global->p2p, peer);
7520                 found = 1;
7521         }
7522
7523         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7524                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7525                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7526                 found = 1;
7527         }
7528
7529         if (wpa_s->pending_pd_before_join) {
7530                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7531                 wpa_s->pending_pd_before_join = 0;
7532                 found = 1;
7533         }
7534
7535         wpas_p2p_stop_find(wpa_s);
7536
7537         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7538                 if (wpa_s == global->p2p_group_formation &&
7539                     (wpa_s->p2p_in_provisioning ||
7540                      wpa_s->parent->pending_interface_type ==
7541                      WPA_IF_P2P_CLIENT)) {
7542                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7543                                    "formation found - cancelling",
7544                                    wpa_s->ifname);
7545                         found = 1;
7546                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7547                                              wpa_s->p2pdev, NULL);
7548                         if (wpa_s->p2p_in_provisioning) {
7549                                 wpas_group_formation_completed(wpa_s, 0, 0);
7550                                 break;
7551                         }
7552                         wpas_p2p_group_delete(wpa_s,
7553                                               P2P_GROUP_REMOVAL_REQUESTED);
7554                         break;
7555                 } else if (wpa_s->p2p_in_invitation) {
7556                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7557                                    wpa_s->ifname);
7558                         found = 1;
7559                         wpas_p2p_group_formation_failed(wpa_s, 0);
7560                         break;
7561                 }
7562         }
7563
7564         if (!found) {
7565                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7566                 return -1;
7567         }
7568
7569         return 0;
7570 }
7571
7572
7573 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7574 {
7575         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7576                 return;
7577
7578         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7579                    "being available anymore");
7580         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7581 }
7582
7583
7584 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7585                                    int freq_24, int freq_5, int freq_overall)
7586 {
7587         struct p2p_data *p2p = wpa_s->global->p2p;
7588         if (p2p == NULL)
7589                 return;
7590         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7591 }
7592
7593
7594 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7595 {
7596         u8 peer[ETH_ALEN];
7597         struct p2p_data *p2p = wpa_s->global->p2p;
7598
7599         if (p2p == NULL)
7600                 return -1;
7601
7602         if (hwaddr_aton(addr, peer))
7603                 return -1;
7604
7605         return p2p_unauthorize(p2p, peer);
7606 }
7607
7608
7609 /**
7610  * wpas_p2p_disconnect - Disconnect from a P2P Group
7611  * @wpa_s: Pointer to wpa_supplicant data
7612  * Returns: 0 on success, -1 on failure
7613  *
7614  * This can be used to disconnect from a group in which the local end is a P2P
7615  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7616  * virtual network interface was created for this group, that interface will be
7617  * removed. Otherwise, only the configured P2P group network will be removed
7618  * from the interface.
7619  */
7620 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7621 {
7622
7623         if (wpa_s == NULL)
7624                 return -1;
7625
7626         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7627                 -1 : 0;
7628 }
7629
7630
7631 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7632 {
7633         int ret;
7634
7635         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7636                 return 0;
7637
7638         ret = p2p_in_progress(wpa_s->global->p2p);
7639         if (ret == 0) {
7640                 /*
7641                  * Check whether there is an ongoing WPS provisioning step (or
7642                  * other parts of group formation) on another interface since
7643                  * p2p_in_progress() does not report this to avoid issues for
7644                  * scans during such provisioning step.
7645                  */
7646                 if (wpa_s->global->p2p_group_formation &&
7647                     wpa_s->global->p2p_group_formation != wpa_s) {
7648                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7649                                 "in group formation",
7650                                 wpa_s->global->p2p_group_formation->ifname);
7651                         ret = 1;
7652                 }
7653         }
7654
7655         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7656                 struct os_reltime now;
7657                 os_get_reltime(&now);
7658                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7659                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7660                         /* Wait for the first client has expired */
7661                         wpa_s->global->p2p_go_wait_client.sec = 0;
7662                 } else {
7663                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7664                         ret = 1;
7665                 }
7666         }
7667
7668         return ret;
7669 }
7670
7671
7672 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7673                               struct wpa_ssid *ssid)
7674 {
7675         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7676             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7677                                  wpa_s->p2pdev, NULL) > 0) {
7678                 /**
7679                  * Remove the network by scheduling the group formation
7680                  * timeout to happen immediately. The teardown code
7681                  * needs to be scheduled to run asynch later so that we
7682                  * don't delete data from under ourselves unexpectedly.
7683                  * Calling wpas_p2p_group_formation_timeout directly
7684                  * causes a series of crashes in WPS failure scenarios.
7685                  */
7686                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7687                            "P2P group network getting removed");
7688                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7689                                        wpa_s->p2pdev, NULL);
7690         }
7691 }
7692
7693
7694 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7695                                           const u8 *addr, const u8 *ssid,
7696                                           size_t ssid_len)
7697 {
7698         struct wpa_ssid *s;
7699         size_t i;
7700
7701         for (s = wpa_s->conf->ssid; s; s = s->next) {
7702                 if (s->disabled != 2)
7703                         continue;
7704                 if (ssid &&
7705                     (ssid_len != s->ssid_len ||
7706                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7707                         continue;
7708                 if (addr == NULL) {
7709                         if (s->mode == WPAS_MODE_P2P_GO)
7710                                 return s;
7711                         continue;
7712                 }
7713                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7714                         return s; /* peer is GO in the persistent group */
7715                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7716                         continue;
7717                 for (i = 0; i < s->num_p2p_clients; i++) {
7718                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7719                                       addr, ETH_ALEN) == 0)
7720                                 return s; /* peer is P2P client in persistent
7721                                            * group */
7722                 }
7723         }
7724
7725         return NULL;
7726 }
7727
7728
7729 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7730                                        const u8 *addr)
7731 {
7732         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7733                                  wpa_s->p2pdev, NULL) > 0) {
7734                 /*
7735                  * This can happen if WPS provisioning step is not terminated
7736                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7737                  * peer was able to connect, there is no need to time out group
7738                  * formation after this, though. In addition, this is used with
7739                  * the initial connection wait on the GO as a separate formation
7740                  * timeout and as such, expected to be hit after the initial WPS
7741                  * provisioning step.
7742                  */
7743                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7744
7745                 if (!wpa_s->p2p_go_group_formation_completed &&
7746                     !wpa_s->group_formation_reported) {
7747                         /*
7748                          * GO has not yet notified group formation success since
7749                          * the WPS step was not completed cleanly. Do that
7750                          * notification now since the P2P Client was able to
7751                          * connect and as such, must have received the
7752                          * credential from the WPS step.
7753                          */
7754                         if (wpa_s->global->p2p)
7755                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7756                         wpas_group_formation_completed(wpa_s, 1, 0);
7757                 }
7758         }
7759         if (!wpa_s->p2p_go_group_formation_completed) {
7760                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7761                 wpa_s->p2p_go_group_formation_completed = 1;
7762                 wpa_s->global->p2p_group_formation = NULL;
7763                 wpa_s->p2p_in_provisioning = 0;
7764                 wpa_s->p2p_in_invitation = 0;
7765         }
7766         wpa_s->global->p2p_go_wait_client.sec = 0;
7767         if (addr == NULL)
7768                 return;
7769         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7770 }
7771
7772
7773 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7774                                        int group_added)
7775 {
7776         struct wpa_supplicant *group = wpa_s;
7777         int ret = 0;
7778
7779         if (wpa_s->global->p2p_group_formation)
7780                 group = wpa_s->global->p2p_group_formation;
7781         wpa_s = wpa_s->global->p2p_init_wpa_s;
7782         offchannel_send_action_done(wpa_s);
7783         if (group_added)
7784                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7785         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7786         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7787                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7788                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7789                          wpa_s->p2p_go_vht_center_freq2,
7790                          wpa_s->p2p_persistent_id,
7791                          wpa_s->p2p_pd_before_go_neg,
7792                          wpa_s->p2p_go_ht40,
7793                          wpa_s->p2p_go_vht,
7794                          wpa_s->p2p_go_max_oper_chwidth, NULL, 0);
7795         return ret;
7796 }
7797
7798
7799 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7800 {
7801         int res;
7802
7803         if (!wpa_s->p2p_fallback_to_go_neg ||
7804             wpa_s->p2p_in_provisioning <= 5)
7805                 return 0;
7806
7807         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7808                 return 0; /* peer operating as a GO */
7809
7810         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7811                 "fallback to GO Negotiation");
7812         wpa_msg_global(wpa_s->p2pdev, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7813                        "reason=GO-not-found");
7814         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7815
7816         return res == 1 ? 2 : 1;
7817 }
7818
7819
7820 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7821 {
7822         struct wpa_supplicant *ifs;
7823
7824         if (wpa_s->wpa_state > WPA_SCANNING) {
7825                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7826                         "concurrent operation",
7827                         wpa_s->conf->p2p_search_delay);
7828                 return wpa_s->conf->p2p_search_delay;
7829         }
7830
7831         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7832                          radio_list) {
7833                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7834                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7835                                 "delay due to concurrent operation on "
7836                                 "interface %s",
7837                                 wpa_s->conf->p2p_search_delay,
7838                                 ifs->ifname);
7839                         return wpa_s->conf->p2p_search_delay;
7840                 }
7841         }
7842
7843         return 0;
7844 }
7845
7846
7847 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7848                                      struct wpa_ssid *s, const u8 *addr,
7849                                      int iface_addr)
7850 {
7851         struct psk_list_entry *psk, *tmp;
7852         int changed = 0;
7853
7854         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7855                               list) {
7856                 if ((iface_addr && !psk->p2p &&
7857                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7858                     (!iface_addr && psk->p2p &&
7859                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7860                         wpa_dbg(wpa_s, MSG_DEBUG,
7861                                 "P2P: Remove persistent group PSK list entry for "
7862                                 MACSTR " p2p=%u",
7863                                 MAC2STR(psk->addr), psk->p2p);
7864                         dl_list_del(&psk->list);
7865                         os_free(psk);
7866                         changed++;
7867                 }
7868         }
7869
7870         return changed;
7871 }
7872
7873
7874 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7875                          const u8 *p2p_dev_addr,
7876                          const u8 *psk, size_t psk_len)
7877 {
7878         struct wpa_ssid *ssid = wpa_s->current_ssid;
7879         struct wpa_ssid *persistent;
7880         struct psk_list_entry *p, *last;
7881
7882         if (psk_len != sizeof(p->psk))
7883                 return;
7884
7885         if (p2p_dev_addr) {
7886                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7887                         " p2p_dev_addr=" MACSTR,
7888                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7889                 if (is_zero_ether_addr(p2p_dev_addr))
7890                         p2p_dev_addr = NULL;
7891         } else {
7892                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7893                         MAC2STR(mac_addr));
7894         }
7895
7896         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7897                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7898                 /* To be added to persistent group once created */
7899                 if (wpa_s->global->add_psk == NULL) {
7900                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7901                         if (wpa_s->global->add_psk == NULL)
7902                                 return;
7903                 }
7904                 p = wpa_s->global->add_psk;
7905                 if (p2p_dev_addr) {
7906                         p->p2p = 1;
7907                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7908                 } else {
7909                         p->p2p = 0;
7910                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7911                 }
7912                 os_memcpy(p->psk, psk, psk_len);
7913                 return;
7914         }
7915
7916         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7917                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7918                 return;
7919         }
7920
7921         persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, NULL, ssid->ssid,
7922                                              ssid->ssid_len);
7923         if (!persistent) {
7924                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7925                 return;
7926         }
7927
7928         p = os_zalloc(sizeof(*p));
7929         if (p == NULL)
7930                 return;
7931         if (p2p_dev_addr) {
7932                 p->p2p = 1;
7933                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7934         } else {
7935                 p->p2p = 0;
7936                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7937         }
7938         os_memcpy(p->psk, psk, psk_len);
7939
7940         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7941             (last = dl_list_last(&persistent->psk_list,
7942                                  struct psk_list_entry, list))) {
7943                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7944                         MACSTR " (p2p=%u) to make room for a new one",
7945                         MAC2STR(last->addr), last->p2p);
7946                 dl_list_del(&last->list);
7947                 os_free(last);
7948         }
7949
7950         wpas_p2p_remove_psk_entry(wpa_s->p2pdev, persistent,
7951                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7952                                   p2p_dev_addr == NULL);
7953         if (p2p_dev_addr) {
7954                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7955                         MACSTR, MAC2STR(p2p_dev_addr));
7956         } else {
7957                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7958                         MAC2STR(mac_addr));
7959         }
7960         dl_list_add(&persistent->psk_list, &p->list);
7961
7962         if (wpa_s->p2pdev->conf->update_config &&
7963             wpa_config_write(wpa_s->p2pdev->confname, wpa_s->p2pdev->conf))
7964                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7965 }
7966
7967
7968 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7969                                 struct wpa_ssid *s, const u8 *addr,
7970                                 int iface_addr)
7971 {
7972         int res;
7973
7974         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7975         if (res > 0 && wpa_s->conf->update_config &&
7976             wpa_config_write(wpa_s->confname, wpa_s->conf))
7977                 wpa_dbg(wpa_s, MSG_DEBUG,
7978                         "P2P: Failed to update configuration");
7979 }
7980
7981
7982 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7983                                       const u8 *peer, int iface_addr)
7984 {
7985         struct hostapd_data *hapd;
7986         struct hostapd_wpa_psk *psk, *prev, *rem;
7987         struct sta_info *sta;
7988
7989         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7990             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7991                 return;
7992
7993         /* Remove per-station PSK entry */
7994         hapd = wpa_s->ap_iface->bss[0];
7995         prev = NULL;
7996         psk = hapd->conf->ssid.wpa_psk;
7997         while (psk) {
7998                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7999                     (!iface_addr &&
8000                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
8001                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
8002                                 MACSTR " iface_addr=%d",
8003                                 MAC2STR(peer), iface_addr);
8004                         if (prev)
8005                                 prev->next = psk->next;
8006                         else
8007                                 hapd->conf->ssid.wpa_psk = psk->next;
8008                         rem = psk;
8009                         psk = psk->next;
8010                         os_free(rem);
8011                 } else {
8012                         prev = psk;
8013                         psk = psk->next;
8014                 }
8015         }
8016
8017         /* Disconnect from group */
8018         if (iface_addr)
8019                 sta = ap_get_sta(hapd, peer);
8020         else
8021                 sta = ap_get_sta_p2p(hapd, peer);
8022         if (sta) {
8023                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
8024                         " (iface_addr=%d) from group",
8025                         MAC2STR(peer), iface_addr);
8026                 hostapd_drv_sta_deauth(hapd, sta->addr,
8027                                        WLAN_REASON_DEAUTH_LEAVING);
8028                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
8029         }
8030 }
8031
8032
8033 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
8034                             int iface_addr)
8035 {
8036         struct wpa_ssid *s;
8037         struct wpa_supplicant *w;
8038         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
8039
8040         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
8041
8042         /* Remove from any persistent group */
8043         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
8044                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8045                         continue;
8046                 if (!iface_addr)
8047                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
8048                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
8049         }
8050
8051         /* Remove from any operating group */
8052         for (w = wpa_s->global->ifaces; w; w = w->next)
8053                 wpas_p2p_remove_client_go(w, peer, iface_addr);
8054 }
8055
8056
8057 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8058 {
8059         struct wpa_supplicant *wpa_s = eloop_ctx;
8060         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8061 }
8062
8063
8064 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8065 {
8066         struct wpa_supplicant *wpa_s = eloop_ctx;
8067
8068         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8069         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8070 }
8071
8072
8073 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8074                                         struct wpa_ssid *ssid)
8075 {
8076         struct wpa_supplicant *iface;
8077
8078         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8079                 if (!iface->current_ssid ||
8080                     iface->current_ssid->frequency == freq ||
8081                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8082                      !iface->current_ssid->p2p_group))
8083                         continue;
8084
8085                 /* Remove the connection with least priority */
8086                 if (!wpas_is_p2p_prioritized(iface)) {
8087                         /* STA connection has priority over existing
8088                          * P2P connection, so remove the interface. */
8089                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8090                         eloop_register_timeout(0, 0,
8091                                                wpas_p2p_group_freq_conflict,
8092                                                iface, NULL);
8093                         /* If connection in progress is P2P connection, do not
8094                          * proceed for the connection. */
8095                         if (wpa_s == iface)
8096                                 return -1;
8097                         else
8098                                 return 0;
8099                 } else {
8100                         /* P2P connection has priority, disable the STA network
8101                          */
8102                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
8103                                                        ssid);
8104                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8105                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8106                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8107                                   ETH_ALEN);
8108                         /* If P2P connection is in progress, continue
8109                          * connecting...*/
8110                         if (wpa_s == iface)
8111                                 return 0;
8112                         else
8113                                 return -1;
8114                 }
8115         }
8116
8117         return 0;
8118 }
8119
8120
8121 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8122 {
8123         struct wpa_ssid *ssid = wpa_s->current_ssid;
8124
8125         if (ssid == NULL || !ssid->p2p_group)
8126                 return 0;
8127
8128         if (wpa_s->p2p_last_4way_hs_fail &&
8129             wpa_s->p2p_last_4way_hs_fail == ssid) {
8130                 u8 go_dev_addr[ETH_ALEN];
8131                 struct wpa_ssid *persistent;
8132
8133                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8134                                               ssid->ssid,
8135                                               ssid->ssid_len) <= 0) {
8136                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8137                         goto disconnect;
8138                 }
8139
8140                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8141                         MACSTR, MAC2STR(go_dev_addr));
8142                 persistent = wpas_p2p_get_persistent(wpa_s->p2pdev, go_dev_addr,
8143                                                      ssid->ssid,
8144                                                      ssid->ssid_len);
8145                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8146                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8147                         goto disconnect;
8148                 }
8149                 wpa_msg_global(wpa_s->p2pdev, MSG_INFO,
8150                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8151                                persistent->id);
8152         disconnect:
8153                 wpa_s->p2p_last_4way_hs_fail = NULL;
8154                 /*
8155                  * Remove the group from a timeout to avoid issues with caller
8156                  * continuing to use the interface if this is on a P2P group
8157                  * interface.
8158                  */
8159                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8160                                        wpa_s, NULL);
8161                 return 1;
8162         }
8163
8164         wpa_s->p2p_last_4way_hs_fail = ssid;
8165         return 0;
8166 }
8167
8168
8169 #ifdef CONFIG_WPS_NFC
8170
8171 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8172                                              struct wpabuf *p2p)
8173 {
8174         struct wpabuf *ret;
8175         size_t wsc_len;
8176
8177         if (p2p == NULL) {
8178                 wpabuf_free(wsc);
8179                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8180                 return NULL;
8181         }
8182
8183         wsc_len = wsc ? wpabuf_len(wsc) : 0;
8184         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8185         if (ret == NULL) {
8186                 wpabuf_free(wsc);
8187                 wpabuf_free(p2p);
8188                 return NULL;
8189         }
8190
8191         wpabuf_put_be16(ret, wsc_len);
8192         if (wsc)
8193                 wpabuf_put_buf(ret, wsc);
8194         wpabuf_put_be16(ret, wpabuf_len(p2p));
8195         wpabuf_put_buf(ret, p2p);
8196
8197         wpabuf_free(wsc);
8198         wpabuf_free(p2p);
8199         wpa_hexdump_buf(MSG_DEBUG,
8200                         "P2P: Generated NFC connection handover message", ret);
8201
8202         if (ndef && ret) {
8203                 struct wpabuf *tmp;
8204                 tmp = ndef_build_p2p(ret);
8205                 wpabuf_free(ret);
8206                 if (tmp == NULL) {
8207                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8208                         return NULL;
8209                 }
8210                 ret = tmp;
8211         }
8212
8213         return ret;
8214 }
8215
8216
8217 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8218                              struct wpa_ssid **ssid, u8 *go_dev_addr)
8219 {
8220         struct wpa_supplicant *iface;
8221
8222         if (go_dev_addr)
8223                 os_memset(go_dev_addr, 0, ETH_ALEN);
8224         if (ssid)
8225                 *ssid = NULL;
8226         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8227                 if (iface->wpa_state < WPA_ASSOCIATING ||
8228                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8229                     !iface->current_ssid->p2p_group ||
8230                     iface->current_ssid->mode != WPAS_MODE_INFRA)
8231                         continue;
8232                 if (ssid)
8233                         *ssid = iface->current_ssid;
8234                 if (go_dev_addr)
8235                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8236                 return iface->assoc_freq;
8237         }
8238         return 0;
8239 }
8240
8241
8242 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8243                                           int ndef)
8244 {
8245         struct wpabuf *wsc, *p2p;
8246         struct wpa_ssid *ssid;
8247         u8 go_dev_addr[ETH_ALEN];
8248         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8249
8250         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8251                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8252                 return NULL;
8253         }
8254
8255         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8256             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8257                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8258                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8259                 return NULL;
8260         }
8261
8262         if (cli_freq == 0) {
8263                 wsc = wps_build_nfc_handover_req_p2p(
8264                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8265         } else
8266                 wsc = NULL;
8267         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8268                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8269                                          ssid ? ssid->ssid_len : 0);
8270
8271         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8272 }
8273
8274
8275 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8276                                           int ndef, int tag)
8277 {
8278         struct wpabuf *wsc, *p2p;
8279         struct wpa_ssid *ssid;
8280         u8 go_dev_addr[ETH_ALEN];
8281         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8282
8283         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8284                 return NULL;
8285
8286         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8287             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8288                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8289                 return NULL;
8290
8291         if (cli_freq == 0) {
8292                 wsc = wps_build_nfc_handover_sel_p2p(
8293                         wpa_s->parent->wps,
8294                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8295                         DEV_PW_NFC_CONNECTION_HANDOVER,
8296                         wpa_s->conf->wps_nfc_dh_pubkey,
8297                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8298         } else
8299                 wsc = NULL;
8300         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8301                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8302                                          ssid ? ssid->ssid_len : 0);
8303
8304         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8305 }
8306
8307
8308 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8309                                    struct p2p_nfc_params *params)
8310 {
8311         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8312                    "connection handover (freq=%d)",
8313                    params->go_freq);
8314
8315         if (params->go_freq && params->go_ssid_len) {
8316                 wpa_s->p2p_wps_method = WPS_NFC;
8317                 wpa_s->pending_join_wps_method = WPS_NFC;
8318                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8319                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8320                           ETH_ALEN);
8321                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8322                                            params->go_ssid,
8323                                            params->go_ssid_len);
8324         }
8325
8326         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8327                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8328                                 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8329                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8330                                 params->go_ssid_len ? params->go_ssid : NULL,
8331                                 params->go_ssid_len);
8332 }
8333
8334
8335 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8336                                   struct p2p_nfc_params *params, int tag)
8337 {
8338         int res, persistent;
8339         struct wpa_ssid *ssid;
8340
8341         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8342                    "connection handover");
8343         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8344                 ssid = wpa_s->current_ssid;
8345                 if (ssid == NULL)
8346                         continue;
8347                 if (ssid->mode != WPAS_MODE_P2P_GO)
8348                         continue;
8349                 if (wpa_s->ap_iface == NULL)
8350                         continue;
8351                 break;
8352         }
8353         if (wpa_s == NULL) {
8354                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8355                 return -1;
8356         }
8357
8358         if (wpa_s->parent->p2p_oob_dev_pw_id !=
8359             DEV_PW_NFC_CONNECTION_HANDOVER &&
8360             !wpa_s->parent->p2p_oob_dev_pw) {
8361                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8362                 return -1;
8363         }
8364         res = wpas_ap_wps_add_nfc_pw(
8365                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
8366                 wpa_s->parent->p2p_oob_dev_pw,
8367                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
8368                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
8369         if (res)
8370                 return res;
8371
8372         if (!tag) {
8373                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8374                 return 0;
8375         }
8376
8377         if (!params->peer ||
8378             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8379                 return 0;
8380
8381         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8382                    " to join", MAC2STR(params->peer->p2p_device_addr));
8383
8384         wpa_s->global->p2p_invite_group = wpa_s;
8385         persistent = ssid->p2p_persistent_group &&
8386                 wpas_p2p_get_persistent(wpa_s->parent,
8387                                         params->peer->p2p_device_addr,
8388                                         ssid->ssid, ssid->ssid_len);
8389         wpa_s->parent->pending_invite_ssid_id = -1;
8390
8391         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8392                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8393                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8394                           wpa_s->global->p2p_dev_addr, persistent, 0,
8395                           wpa_s->parent->p2p_oob_dev_pw_id);
8396 }
8397
8398
8399 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8400                                     struct p2p_nfc_params *params,
8401                                     int forced_freq)
8402 {
8403         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8404                    "connection handover");
8405         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8406                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8407                                 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8408                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8409                                 NULL, 0);
8410 }
8411
8412
8413 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8414                                     struct p2p_nfc_params *params,
8415                                     int forced_freq)
8416 {
8417         int res;
8418
8419         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8420                    "connection handover");
8421         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8422                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8423                                forced_freq, wpa_s->p2p_go_vht_center_freq2,
8424                                -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8425                                NULL, 0);
8426         if (res)
8427                 return res;
8428
8429         res = wpas_p2p_listen(wpa_s, 60);
8430         if (res) {
8431                 p2p_unauthorize(wpa_s->global->p2p,
8432                                 params->peer->p2p_device_addr);
8433         }
8434
8435         return res;
8436 }
8437
8438
8439 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8440                                             const struct wpabuf *data,
8441                                             int sel, int tag, int forced_freq)
8442 {
8443         const u8 *pos, *end;
8444         u16 len, id;
8445         struct p2p_nfc_params params;
8446         int res;
8447
8448         os_memset(&params, 0, sizeof(params));
8449         params.sel = sel;
8450
8451         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8452
8453         pos = wpabuf_head(data);
8454         end = pos + wpabuf_len(data);
8455
8456         if (end - pos < 2) {
8457                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8458                            "attributes");
8459                 return -1;
8460         }
8461         len = WPA_GET_BE16(pos);
8462         pos += 2;
8463         if (len > end - pos) {
8464                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8465                            "attributes");
8466                 return -1;
8467         }
8468         params.wsc_attr = pos;
8469         params.wsc_len = len;
8470         pos += len;
8471
8472         if (end - pos < 2) {
8473                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8474                            "attributes");
8475                 return -1;
8476         }
8477         len = WPA_GET_BE16(pos);
8478         pos += 2;
8479         if (len > end - pos) {
8480                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8481                            "attributes");
8482                 return -1;
8483         }
8484         params.p2p_attr = pos;
8485         params.p2p_len = len;
8486         pos += len;
8487
8488         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8489                     params.wsc_attr, params.wsc_len);
8490         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8491                     params.p2p_attr, params.p2p_len);
8492         if (pos < end) {
8493                 wpa_hexdump(MSG_DEBUG,
8494                             "P2P: Ignored extra data after P2P attributes",
8495                             pos, end - pos);
8496         }
8497
8498         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8499         if (res)
8500                 return res;
8501
8502         if (params.next_step == NO_ACTION)
8503                 return 0;
8504
8505         if (params.next_step == BOTH_GO) {
8506                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8507                         MAC2STR(params.peer->p2p_device_addr));
8508                 return 0;
8509         }
8510
8511         if (params.next_step == PEER_CLIENT) {
8512                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8513                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8514                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8515                                 " ssid=\"%s\"",
8516                                 MAC2STR(params.peer->p2p_device_addr),
8517                                 params.go_freq,
8518                                 MAC2STR(params.go_dev_addr),
8519                                 wpa_ssid_txt(params.go_ssid,
8520                                              params.go_ssid_len));
8521                 } else {
8522                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8523                                 "peer=" MACSTR " freq=%d",
8524                                 MAC2STR(params.peer->p2p_device_addr),
8525                                 params.go_freq);
8526                 }
8527                 return 0;
8528         }
8529
8530         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8531                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8532                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8533                 return 0;
8534         }
8535
8536         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8537         wpa_s->p2p_oob_dev_pw = NULL;
8538
8539         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8540                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8541                            "received");
8542                 return -1;
8543         }
8544
8545         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8546         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8547         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8548                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8549         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8550                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8551         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8552
8553         if (tag) {
8554                 if (id < 0x10) {
8555                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8556                                    "peer OOB Device Password Id %u", id);
8557                         return -1;
8558                 }
8559                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8560                            "Device Password Id %u", id);
8561                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8562                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8563                                 params.oob_dev_pw_len -
8564                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
8565                 wpa_s->p2p_oob_dev_pw_id = id;
8566                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8567                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8568                         params.oob_dev_pw_len -
8569                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8570                 if (wpa_s->p2p_oob_dev_pw == NULL)
8571                         return -1;
8572
8573                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8574                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8575                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8576                         return -1;
8577         } else {
8578                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8579                            "without Device Password");
8580                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8581         }
8582
8583         switch (params.next_step) {
8584         case NO_ACTION:
8585         case BOTH_GO:
8586         case PEER_CLIENT:
8587                 /* already covered above */
8588                 return 0;
8589         case JOIN_GROUP:
8590                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8591         case AUTH_JOIN:
8592                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8593         case INIT_GO_NEG:
8594                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8595         case RESP_GO_NEG:
8596                 /* TODO: use own OOB Dev Pw */
8597                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8598         }
8599
8600         return -1;
8601 }
8602
8603
8604 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8605                              const struct wpabuf *data, int forced_freq)
8606 {
8607         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8608                 return -1;
8609
8610         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8611 }
8612
8613
8614 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8615                                  const struct wpabuf *req,
8616                                  const struct wpabuf *sel, int forced_freq)
8617 {
8618         struct wpabuf *tmp;
8619         int ret;
8620
8621         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8622                 return -1;
8623
8624         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8625
8626         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8627                           wpabuf_head(req), wpabuf_len(req));
8628         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8629                           wpabuf_head(sel), wpabuf_len(sel));
8630         if (forced_freq)
8631                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8632         tmp = ndef_parse_p2p(init ? sel : req);
8633         if (tmp == NULL) {
8634                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8635                 return -1;
8636         }
8637
8638         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8639                                                forced_freq);
8640         wpabuf_free(tmp);
8641
8642         return ret;
8643 }
8644
8645
8646 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8647 {
8648         const u8 *if_addr;
8649         int go_intent = wpa_s->conf->p2p_go_intent;
8650         struct wpa_supplicant *iface;
8651
8652         if (wpa_s->global->p2p == NULL)
8653                 return -1;
8654
8655         if (!enabled) {
8656                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8657                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8658                 {
8659                         if (!iface->ap_iface)
8660                                 continue;
8661                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8662                 }
8663                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8664                                                  0, NULL);
8665                 if (wpa_s->p2p_nfc_tag_enabled)
8666                         wpas_p2p_remove_pending_group_interface(wpa_s);
8667                 wpa_s->p2p_nfc_tag_enabled = 0;
8668                 return 0;
8669         }
8670
8671         if (wpa_s->global->p2p_disabled)
8672                 return -1;
8673
8674         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8675             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8676             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8677             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8678                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8679                            "to allow static handover cases");
8680                 return -1;
8681         }
8682
8683         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8684
8685         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8686         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8687         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8688         if (wpa_s->p2p_oob_dev_pw == NULL)
8689                 return -1;
8690         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8691
8692         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8693             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8694                 /*
8695                  * P2P Group Interface present and the command came on group
8696                  * interface, so enable the token for the current interface.
8697                  */
8698                 wpa_s->create_p2p_iface = 0;
8699         } else {
8700                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8701         }
8702
8703         if (wpa_s->create_p2p_iface) {
8704                 enum wpa_driver_if_type iftype;
8705                 /* Prepare to add a new interface for the group */
8706                 iftype = WPA_IF_P2P_GROUP;
8707                 if (go_intent == 15)
8708                         iftype = WPA_IF_P2P_GO;
8709                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8710                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8711                                    "interface for the group");
8712                         return -1;
8713                 }
8714
8715                 if_addr = wpa_s->pending_interface_addr;
8716         } else if (wpa_s->p2p_mgmt)
8717                 if_addr = wpa_s->parent->own_addr;
8718         else
8719                 if_addr = wpa_s->own_addr;
8720
8721         wpa_s->p2p_nfc_tag_enabled = enabled;
8722
8723         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8724                 struct hostapd_data *hapd;
8725                 if (iface->ap_iface == NULL)
8726                         continue;
8727                 hapd = iface->ap_iface->bss[0];
8728                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8729                 hapd->conf->wps_nfc_dh_pubkey =
8730                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8731                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8732                 hapd->conf->wps_nfc_dh_privkey =
8733                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8734                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8735                 hapd->conf->wps_nfc_dev_pw =
8736                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8737                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8738
8739                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8740                         wpa_dbg(iface, MSG_DEBUG,
8741                                 "P2P: Failed to enable NFC Tag for GO");
8742                 }
8743         }
8744         p2p_set_authorized_oob_dev_pw_id(
8745                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8746                 if_addr);
8747
8748         return 0;
8749 }
8750
8751 #endif /* CONFIG_WPS_NFC */
8752
8753
8754 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8755                                              struct wpa_used_freq_data *freqs,
8756                                              unsigned int num)
8757 {
8758         u8 curr_chan, cand, chan;
8759         unsigned int i;
8760
8761         /*
8762          * If possible, optimize the Listen channel to be a channel that is
8763          * already used by one of the other interfaces.
8764          */
8765         if (!wpa_s->conf->p2p_optimize_listen_chan)
8766                 return;
8767
8768         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8769                 return;
8770
8771         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8772         for (i = 0, cand = 0; i < num; i++) {
8773                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8774                 if (curr_chan == chan) {
8775                         cand = 0;
8776                         break;
8777                 }
8778
8779                 if (chan == 1 || chan == 6 || chan == 11)
8780                         cand = chan;
8781         }
8782
8783         if (cand) {
8784                 wpa_dbg(wpa_s, MSG_DEBUG,
8785                         "P2P: Update Listen channel to %u based on operating channel",
8786                         cand);
8787                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8788         }
8789 }
8790
8791
8792 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8793 {
8794         struct hostapd_config *conf;
8795         struct p2p_go_neg_results params;
8796         struct csa_settings csa_settings;
8797         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8798         int old_freq = current_ssid->frequency;
8799         int ret;
8800
8801         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8802                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8803                 return -1;
8804         }
8805
8806         /*
8807          * TODO: This function may not always work correctly. For example,
8808          * when we have a running GO and a BSS on a DFS channel.
8809          */
8810         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8811                 wpa_dbg(wpa_s, MSG_DEBUG,
8812                         "P2P CSA: Failed to select new frequency for GO");
8813                 return -1;
8814         }
8815
8816         if (current_ssid->frequency == params.freq) {
8817                 wpa_dbg(wpa_s, MSG_DEBUG,
8818                         "P2P CSA: Selected same frequency - not moving GO");
8819                 return 0;
8820         }
8821
8822         conf = hostapd_config_defaults();
8823         if (!conf) {
8824                 wpa_dbg(wpa_s, MSG_DEBUG,
8825                         "P2P CSA: Failed to allocate default config");
8826                 return -1;
8827         }
8828
8829         current_ssid->frequency = params.freq;
8830         if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
8831                 wpa_dbg(wpa_s, MSG_DEBUG,
8832                         "P2P CSA: Failed to create new GO config");
8833                 ret = -1;
8834                 goto out;
8835         }
8836
8837         if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
8838                 wpa_dbg(wpa_s, MSG_DEBUG,
8839                         "P2P CSA: CSA to a different band is not supported");
8840                 ret = -1;
8841                 goto out;
8842         }
8843
8844         os_memset(&csa_settings, 0, sizeof(csa_settings));
8845         csa_settings.cs_count = P2P_GO_CSA_COUNT;
8846         csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
8847         csa_settings.freq_params.freq = params.freq;
8848         csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
8849         csa_settings.freq_params.ht_enabled = conf->ieee80211n;
8850         csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
8851
8852         if (conf->ieee80211ac) {
8853                 int freq1 = 0, freq2 = 0;
8854                 u8 chan, opclass;
8855
8856                 if (ieee80211_freq_to_channel_ext(params.freq,
8857                                                   conf->secondary_channel,
8858                                                   conf->vht_oper_chwidth,
8859                                                   &opclass, &chan) ==
8860                     NUM_HOSTAPD_MODES) {
8861                         wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
8862                         ret = -1;
8863                         goto out;
8864                 }
8865
8866                 if (conf->vht_oper_centr_freq_seg0_idx)
8867                         freq1 = ieee80211_chan_to_freq(
8868                                 NULL, opclass,
8869                                 conf->vht_oper_centr_freq_seg0_idx);
8870
8871                 if (conf->vht_oper_centr_freq_seg1_idx)
8872                         freq2 = ieee80211_chan_to_freq(
8873                                 NULL, opclass,
8874                                 conf->vht_oper_centr_freq_seg1_idx);
8875
8876                 if (freq1 < 0 || freq2 < 0) {
8877                         wpa_dbg(wpa_s, MSG_DEBUG,
8878                                 "P2P CSA: Selected invalid VHT center freqs");
8879                         ret = -1;
8880                         goto out;
8881                 }
8882
8883                 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
8884                 csa_settings.freq_params.center_freq1 = freq1;
8885                 csa_settings.freq_params.center_freq2 = freq2;
8886
8887                 switch (conf->vht_oper_chwidth) {
8888                 case VHT_CHANWIDTH_80MHZ:
8889                 case VHT_CHANWIDTH_80P80MHZ:
8890                         csa_settings.freq_params.bandwidth = 80;
8891                         break;
8892                 case VHT_CHANWIDTH_160MHZ:
8893                         csa_settings.freq_params.bandwidth = 160;
8894                         break;
8895                 }
8896         }
8897
8898         ret = ap_switch_channel(wpa_s, &csa_settings);
8899 out:
8900         current_ssid->frequency = old_freq;
8901         hostapd_config_free(conf);
8902         return ret;
8903 }
8904
8905
8906 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8907 {
8908         struct p2p_go_neg_results params;
8909         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8910
8911         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8912
8913         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8914                 current_ssid->frequency);
8915
8916         /* Stop the AP functionality */
8917         /* TODO: Should do this in a way that does not indicated to possible
8918          * P2P Clients in the group that the group is terminated. */
8919         wpa_supplicant_ap_deinit(wpa_s);
8920
8921         /* Reselect the GO frequency */
8922         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8923                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8924                 wpas_p2p_group_delete(wpa_s,
8925                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8926                 return;
8927         }
8928         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8929                 params.freq);
8930
8931         if (params.freq &&
8932             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8933                 wpa_printf(MSG_DEBUG,
8934                            "P2P: Selected freq (%u MHz) is not valid for P2P",
8935                            params.freq);
8936                 wpas_p2p_group_delete(wpa_s,
8937                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8938                 return;
8939         }
8940
8941         /* Update the frequency */
8942         current_ssid->frequency = params.freq;
8943         wpa_s->connect_without_scan = current_ssid;
8944         wpa_s->reassociate = 1;
8945         wpa_s->disconnected = 0;
8946         wpa_supplicant_req_scan(wpa_s, 0, 0);
8947 }
8948
8949
8950 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8951 {
8952         struct wpa_supplicant *wpa_s = eloop_ctx;
8953
8954         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8955                 return;
8956
8957         wpas_p2p_go_update_common_freqs(wpa_s);
8958
8959         /* Do not move GO in the middle of a CSA */
8960         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8961                 wpa_printf(MSG_DEBUG,
8962                            "P2P: CSA is in progress - not moving GO");
8963                 return;
8964         }
8965
8966         /*
8967          * First, try a channel switch flow. If it is not supported or fails,
8968          * take down the GO and bring it up again.
8969          */
8970         if (wpas_p2p_move_go_csa(wpa_s) < 0)
8971                 wpas_p2p_move_go_no_csa(wpa_s);
8972 }
8973
8974
8975 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
8976 {
8977         struct wpa_supplicant *wpa_s = eloop_ctx;
8978         struct wpa_used_freq_data *freqs = NULL;
8979         unsigned int num = wpa_s->num_multichan_concurrent;
8980
8981         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8982         if (!freqs)
8983                 return;
8984
8985         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8986
8987         /* Previous attempt to move a GO was not possible -- try again. */
8988         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
8989                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
8990
8991         os_free(freqs);
8992 }
8993
8994
8995 /*
8996  * Consider moving a GO from its currently used frequency:
8997  * 1. It is possible that due to regulatory consideration the frequency
8998  *    can no longer be used and there is a need to evacuate the GO.
8999  * 2. It is possible that due to MCC considerations, it would be preferable
9000  *    to move the GO to a channel that is currently used by some other
9001  *    station interface.
9002  *
9003  * In case a frequency that became invalid is once again valid, cancel a
9004  * previously initiated GO frequency change.
9005  */
9006 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
9007                                             struct wpa_used_freq_data *freqs,
9008                                             unsigned int num)
9009 {
9010         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
9011         unsigned int timeout;
9012         int freq;
9013
9014         wpas_p2p_go_update_common_freqs(wpa_s);
9015
9016         freq = wpa_s->current_ssid->frequency;
9017         for (i = 0, invalid_freq = 0; i < num; i++) {
9018                 if (freqs[i].freq == freq) {
9019                         flags = freqs[i].flags;
9020
9021                         /* The channel is invalid, must change it */
9022                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
9023                                 wpa_dbg(wpa_s, MSG_DEBUG,
9024                                         "P2P: Freq=%d MHz no longer valid for GO",
9025                                         freq);
9026                                 invalid_freq = 1;
9027                         }
9028                 } else if (freqs[i].flags == 0) {
9029                         /* Freq is not used by any other station interface */
9030                         continue;
9031                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
9032                                                freqs[i].freq)) {
9033                         /* Freq is not valid for P2P use cases */
9034                         continue;
9035                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9036                            P2P_GO_FREQ_MOVE_SCM) {
9037                         policy_move = 1;
9038                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9039                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
9040                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9041                         policy_move = 1;
9042                 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
9043                             P2P_GO_FREQ_MOVE_SCM_ECSA) &&
9044                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9045                         if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
9046                                 policy_move = 1;
9047                         } else if ((wpa_s->drv_flags &
9048                                     WPA_DRIVER_FLAGS_AP_CSA) &&
9049                                    wpas_p2p_go_clients_support_ecsa(wpa_s)) {
9050                                 u8 chan;
9051
9052                                 /*
9053                                  * We do not support CSA between bands, so move
9054                                  * GO only within the same band.
9055                                  */
9056                                 if (wpa_s->ap_iface->current_mode->mode ==
9057                                     ieee80211_freq_to_chan(freqs[i].freq,
9058                                                            &chan))
9059                                         policy_move = 1;
9060                         }
9061                 }
9062         }
9063
9064         wpa_dbg(wpa_s, MSG_DEBUG,
9065                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9066                 invalid_freq, policy_move, flags);
9067
9068         /*
9069          * The channel is valid, or we are going to have a policy move, so
9070          * cancel timeout.
9071          */
9072         if (!invalid_freq || policy_move) {
9073                 wpa_dbg(wpa_s, MSG_DEBUG,
9074                         "P2P: Cancel a GO move from freq=%d MHz", freq);
9075                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9076
9077                 if (wpas_p2p_in_progress(wpa_s)) {
9078                         wpa_dbg(wpa_s, MSG_DEBUG,
9079                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9080                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9081                                              wpa_s, NULL);
9082                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9083                                                wpas_p2p_reconsider_moving_go,
9084                                                wpa_s, NULL);
9085                         return;
9086                 }
9087         }
9088
9089         if (!invalid_freq && (!policy_move || flags != 0)) {
9090                 wpa_dbg(wpa_s, MSG_DEBUG,
9091                         "P2P: Not initiating a GO frequency change");
9092                 return;
9093         }
9094
9095         /*
9096          * Do not consider moving GO if it is in the middle of a CSA. When the
9097          * CSA is finished this flow should be retriggered.
9098          */
9099         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9100                 wpa_dbg(wpa_s, MSG_DEBUG,
9101                         "P2P: Not initiating a GO frequency change - CSA is in progress");
9102                 return;
9103         }
9104
9105         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9106                 timeout = P2P_GO_FREQ_CHANGE_TIME;
9107         else
9108                 timeout = 0;
9109
9110         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9111                 freq, timeout);
9112         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9113         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9114 }
9115
9116
9117 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9118                                          struct wpa_used_freq_data *freqs,
9119                                          unsigned int num,
9120                                          enum wpas_p2p_channel_update_trig trig)
9121 {
9122         struct wpa_supplicant *ifs;
9123
9124         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9125                              NULL);
9126
9127         /*
9128          * Travers all the radio interfaces, and for each GO interface, check
9129          * if there is a need to move the GO from the frequency it is using,
9130          * or in case the frequency is valid again, cancel the evacuation flow.
9131          */
9132         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9133                          radio_list) {
9134                 if (ifs->current_ssid == NULL ||
9135                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9136                         continue;
9137
9138                 /*
9139                  * The GO was just started or completed channel switch, no need
9140                  * to move it.
9141                  */
9142                 if (wpa_s == ifs &&
9143                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9144                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9145                         wpa_dbg(wpa_s, MSG_DEBUG,
9146                                 "P2P: GO move - schedule re-consideration");
9147                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9148                                                wpas_p2p_reconsider_moving_go,
9149                                                wpa_s, NULL);
9150                         continue;
9151                 }
9152
9153                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9154         }
9155 }
9156
9157
9158 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9159 {
9160         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9161                 return;
9162
9163         wpas_p2p_update_channel_list(wpa_s,
9164                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9165 }
9166
9167
9168 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9169 {
9170         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9171                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9172                         "the management interface is being removed");
9173                 wpas_p2p_deinit_global(wpa_s->global);
9174         }
9175 }
9176
9177
9178 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9179 {
9180         if (wpa_s->ap_iface->bss)
9181                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9182         wpas_p2p_group_deinit(wpa_s);
9183 }