wpa_supplicant/p2p_supplicant.c

   1 /*
   2  * wpa_supplicant - P2P
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi>
   5  *
   6  * This software may be distributed under the terms of the BSD license.
   7  * See README for more details.
   8  */
   9
  10 #include "includes.h"
  11
  12 #include "common.h"
  13 #include "eloop.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/wpa_ctrl.h"
  17 #include "wps/wps_i.h"
  18 #include "p2p/p2p.h"
  19 #include "ap/hostapd.h"
  20 #include "ap/ap_config.h"
  21 #include "ap/sta_info.h"
  22 #include "ap/ap_drv_ops.h"
  23 #include "ap/wps_hostapd.h"
  24 #include "ap/p2p_hostapd.h"
  25 #include "ap/dfs.h"
  26 #include "eapol_supp/eapol_supp_sm.h"
  27 #include "rsn_supp/wpa.h"
  28 #include "wpa_supplicant_i.h"
  29 #include "driver_i.h"
  30 #include "ap.h"
  31 #include "config_ssid.h"
  32 #include "config.h"
  33 #include "notify.h"
  34 #include "scan.h"
  35 #include "bss.h"
  36 #include "offchannel.h"
  37 #include "wps_supplicant.h"
  38 #include "p2p_supplicant.h"
  39 #include "wifi_display.h"
  40
  41
  42 /*
  43  * How many times to try to scan to find the GO before giving up on join
  44  * request.
  45  */
  46 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  47
  48 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
  49
  50 /**
  51  * Defines time interval in seconds when a GO needs to evacuate a frequency that
  52  * it is currently using, but is no longer valid for P2P use cases.
  53  */
  54 #define P2P_GO_FREQ_CHANGE_TIME 5
  55
  56 /**
  57  * Defines CSA parameters which are used when GO evacuates the no longer valid
  58  * channel (and if the driver supports channel switch).
  59  */
  60 #define P2P_GO_CSA_COUNT 7
  61 #define P2P_GO_CSA_BLOCK_TX 0
  62
  63 #ifndef P2P_MAX_CLIENT_IDLE
  64 /*
  65  * How many seconds to try to reconnect to the GO when connection in P2P client
  66  * role has been lost.
  67  */
  68 #define P2P_MAX_CLIENT_IDLE 10
  69 #endif /* P2P_MAX_CLIENT_IDLE */
  70
  71 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  72 /*
  73  * How many seconds to wait for initial 4-way handshake to get completed after
  74  * WPS provisioning step or after the re-invocation of a persistent group on a
  75  * P2P Client.
  76  */
  77 #define P2P_MAX_INITIAL_CONN_WAIT 10
  78 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  79
  80 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
  81 /*
  82  * How many seconds to wait for initial 4-way handshake to get completed after
  83  * WPS provisioning step on the GO. This controls the extra time the P2P
  84  * operation is considered to be in progress (e.g., to delay other scans) after
  85  * WPS provisioning has been completed on the GO during group formation.
  86  */
  87 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
  88 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
  89
  90 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
  91 /*
  92  * How many seconds to wait for initial 4-way handshake to get completed after
  93  * re-invocation of a persistent group on the GO when the client is expected
  94  * to connect automatically (no user interaction).
  95  */
  96 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
  97 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
  98
  99 #define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"
 100
 101 /*
 102  * How many seconds to wait to re-attempt to move GOs, in case previous attempt
 103  * was not possible.
 104  */
 105 #define P2P_RECONSIDER_GO_MOVE_DELAY 30
 106
 107 enum p2p_group_removal_reason {
 108         P2P_GROUP_REMOVAL_UNKNOWN,
 109         P2P_GROUP_REMOVAL_SILENT,
 110         P2P_GROUP_REMOVAL_FORMATION_FAILED,
 111         P2P_GROUP_REMOVAL_REQUESTED,
 112         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
 113         P2P_GROUP_REMOVAL_UNAVAILABLE,
 114         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
 115         P2P_GROUP_REMOVAL_PSK_FAILURE,
 116         P2P_GROUP_REMOVAL_FREQ_CONFLICT,
 117         P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL
 118 };
 119
 120
 121 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
 122 static struct wpa_supplicant *
 123 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
 124                          int go);
 125 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
 126                                const u8 *ssid, size_t ssid_len);
 127 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
 128                                 int *force_freq, int *pref_freq, int go,
 129                                 unsigned int *pref_freq_list,
 130                                 unsigned int *num_pref_freq);
 131 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 132                                    const u8 *ssid, size_t ssid_len);
 133 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 134 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 135                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 136                          int auto_join, int freq,
 137                          const u8 *ssid, size_t ssid_len);
 138 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 139 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 140 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 141 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 142 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 143                                              void *timeout_ctx);
 144 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 145 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 146                                        int group_added);
 147 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 148 static void wpas_stop_listen(void *ctx);
 149 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
 150 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
 151 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 152                                         enum wpa_driver_if_type type);
 153 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
 154                                             int already_deleted);
 155 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
 156                                              struct wpa_used_freq_data *freqs,
 157                                              unsigned int num);
 158 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx);
 159 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq);
 160 static void
 161 wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
 162                              struct wpa_used_freq_data *freqs, unsigned int num,
 163                              enum wpas_p2p_channel_update_trig trig);
 164 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx);
 165
 166
 167 /*
 168  * Get the number of concurrent channels that the HW can operate, but that are
 169  * currently not in use by any of the wpa_supplicant interfaces.
 170  */
 171 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 172 {
 173         int *freqs;
 174         int num, unused;
 175
 176         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 177         if (!freqs)
 178                 return -1;
 179
 180         num = get_shared_radio_freqs(wpa_s, freqs,
 181                                      wpa_s->num_multichan_concurrent);
 182         os_free(freqs);
 183
 184         unused = wpa_s->num_multichan_concurrent - num;
 185         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 186         return unused;
 187 }
 188
 189
 190 /*
 191  * Get the frequencies that are currently in use by one or more of the virtual
 192  * interfaces, and that are also valid for P2P operation.
 193  */
 194 static unsigned int
 195 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 196                           struct wpa_used_freq_data *p2p_freqs,
 197                           unsigned int len)
 198 {
 199         struct wpa_used_freq_data *freqs;
 200         unsigned int num, i, j;
 201
 202         freqs = os_calloc(wpa_s->num_multichan_concurrent,
 203                           sizeof(struct wpa_used_freq_data));
 204         if (!freqs)
 205                 return 0;
 206
 207         num = get_shared_radio_freqs_data(wpa_s, freqs,
 208                                           wpa_s->num_multichan_concurrent);
 209
 210         os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
 211
 212         for (i = 0, j = 0; i < num && j < len; i++) {
 213                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
 214                         p2p_freqs[j++] = freqs[i];
 215         }
 216
 217         os_free(freqs);
 218
 219         dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
 220
 221         return j;
 222 }
 223
 224
 225 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 226                                              int freq)
 227 {
 228         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 229                 return;
 230
 231         /* Use the wpa_s used to control the P2P Device operation */
 232         wpa_s = wpa_s->global->p2p_init_wpa_s;
 233
 234         if (wpa_s->conf->p2p_ignore_shared_freq &&
 235             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 236             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 237                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 238                            freq);
 239                 freq = 0;
 240         }
 241         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 242 }
 243
 244
 245 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 246                                       struct wpa_scan_results *scan_res)
 247 {
 248         size_t i;
 249
 250         if (wpa_s->p2p_scan_work) {
 251                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 252                 wpa_s->p2p_scan_work = NULL;
 253                 radio_work_done(work);
 254         }
 255
 256         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 257                 return;
 258
 259         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 260                    (int) scan_res->num);
 261
 262         for (i = 0; i < scan_res->num; i++) {
 263                 struct wpa_scan_res *bss = scan_res->res[i];
 264                 struct os_reltime time_tmp_age, entry_ts;
 265                 const u8 *ies;
 266                 size_t ies_len;
 267
 268                 time_tmp_age.sec = bss->age / 1000;
 269                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 270                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 271
 272                 ies = (const u8 *) (bss + 1);
 273                 ies_len = bss->ie_len;
 274                 if (bss->beacon_ie_len > 0 &&
 275                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 276                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 277                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 278                                    MACSTR, MAC2STR(bss->bssid));
 279                         ies = ies + ies_len;
 280                         ies_len = bss->beacon_ie_len;
 281                 }
 282
 283
 284                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 285                                          bss->freq, &entry_ts, bss->level,
 286                                          ies, ies_len) > 0)
 287                         break;
 288         }
 289
 290         p2p_scan_res_handled(wpa_s->global->p2p);
 291 }
 292
 293
 294 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 295 {
 296         struct wpa_supplicant *wpa_s = work->wpa_s;
 297         struct wpa_driver_scan_params *params = work->ctx;
 298         int ret;
 299
 300         if (deinit) {
 301                 if (!work->started) {
 302                         wpa_scan_free_params(params);
 303                         return;
 304                 }
 305
 306                 wpa_s->p2p_scan_work = NULL;
 307                 return;
 308         }
 309
 310         ret = wpa_drv_scan(wpa_s, params);
 311         wpa_scan_free_params(params);
 312         work->ctx = NULL;
 313         if (ret) {
 314                 radio_work_done(work);
 315                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 316                 return;
 317         }
 318
 319         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 320         os_get_reltime(&wpa_s->scan_trigger_time);
 321         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 322         wpa_s->own_scan_requested = 1;
 323         wpa_s->p2p_scan_work = work;
 324 }
 325
 326
 327 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 328                                           int freq)
 329 {
 330         if (wpa_s->global->p2p_24ghz_social_channels &&
 331             (freq == 2412 || freq == 2437 || freq == 2462)) {
 332                 /*
 333                  * Search all social channels regardless of whether these have
 334                  * been disabled for P2P operating channel use to avoid missing
 335                  * peers.
 336                  */
 337                 return 1;
 338         }
 339         return p2p_supported_freq(wpa_s->global->p2p, freq);
 340 }
 341
 342
 343 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 344                          unsigned int num_req_dev_types,
 345                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 346 {
 347         struct wpa_supplicant *wpa_s = ctx;
 348         struct wpa_driver_scan_params *params = NULL;
 349         struct wpabuf *wps_ie, *ies;
 350         unsigned int num_channels = 0;
 351         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 352         size_t ielen;
 353         u8 *n, i;
 354
 355         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 356                 return -1;
 357
 358         if (wpa_s->p2p_scan_work) {
 359                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 360                 return -1;
 361         }
 362
 363         params = os_zalloc(sizeof(*params));
 364         if (params == NULL)
 365                 return -1;
 366
 367         /* P2P Wildcard SSID */
 368         params->num_ssids = 1;
 369         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 370         if (n == NULL)
 371                 goto fail;
 372         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 373         params->ssids[0].ssid = n;
 374         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 375
 376         wpa_s->wps->dev.p2p = 1;
 377         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 378                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 379                                         num_req_dev_types, req_dev_types);
 380         if (wps_ie == NULL)
 381                 goto fail;
 382
 383         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 384         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 385         if (ies == NULL) {
 386                 wpabuf_free(wps_ie);
 387                 goto fail;
 388         }
 389         wpabuf_put_buf(ies, wps_ie);
 390         wpabuf_free(wps_ie);
 391
 392         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 393
 394         params->p2p_probe = 1;
 395         n = os_malloc(wpabuf_len(ies));
 396         if (n == NULL) {
 397                 wpabuf_free(ies);
 398                 goto fail;
 399         }
 400         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 401         params->extra_ies = n;
 402         params->extra_ies_len = wpabuf_len(ies);
 403         wpabuf_free(ies);
 404
 405         switch (type) {
 406         case P2P_SCAN_SOCIAL:
 407                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 408                                           sizeof(int));
 409                 if (params->freqs == NULL)
 410                         goto fail;
 411                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 412                         if (wpas_p2p_search_social_channel(
 413                                     wpa_s, social_channels_freq[i]))
 414                                 params->freqs[num_channels++] =
 415                                         social_channels_freq[i];
 416                 }
 417                 params->freqs[num_channels++] = 0;
 418                 break;
 419         case P2P_SCAN_FULL:
 420                 break;
 421         case P2P_SCAN_SPECIFIC:
 422                 params->freqs = os_calloc(2, sizeof(int));
 423                 if (params->freqs == NULL)
 424                         goto fail;
 425                 params->freqs[0] = freq;
 426                 params->freqs[1] = 0;
 427                 break;
 428         case P2P_SCAN_SOCIAL_PLUS_ONE:
 429                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 430                                           sizeof(int));
 431                 if (params->freqs == NULL)
 432                         goto fail;
 433                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 434                         if (wpas_p2p_search_social_channel(
 435                                     wpa_s, social_channels_freq[i]))
 436                                 params->freqs[num_channels++] =
 437                                         social_channels_freq[i];
 438                 }
 439                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 440                         params->freqs[num_channels++] = freq;
 441                 params->freqs[num_channels++] = 0;
 442                 break;
 443         }
 444
 445         radio_remove_works(wpa_s, "p2p-scan", 0);
 446         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 447                            params) < 0)
 448                 goto fail;
 449         return 0;
 450
 451 fail:
 452         wpa_scan_free_params(params);
 453         return -1;
 454 }
 455
 456
 457 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 458 {
 459         switch (p2p_group_interface) {
 460         case P2P_GROUP_INTERFACE_PENDING:
 461                 return WPA_IF_P2P_GROUP;
 462         case P2P_GROUP_INTERFACE_GO:
 463                 return WPA_IF_P2P_GO;
 464         case P2P_GROUP_INTERFACE_CLIENT:
 465                 return WPA_IF_P2P_CLIENT;
 466         }
 467
 468         return WPA_IF_P2P_GROUP;
 469 }
 470
 471
 472 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 473                                                   const u8 *ssid,
 474                                                   size_t ssid_len, int *go)
 475 {
 476         struct wpa_ssid *s;
 477
 478         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 479                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 480                         if (s->disabled != 0 || !s->p2p_group ||
 481                             s->ssid_len != ssid_len ||
 482                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 483                                 continue;
 484                         if (s->mode == WPAS_MODE_P2P_GO &&
 485                             s != wpa_s->current_ssid)
 486                                 continue;
 487                         if (go)
 488                                 *go = s->mode == WPAS_MODE_P2P_GO;
 489                         return wpa_s;
 490                 }
 491         }
 492
 493         return NULL;
 494 }
 495
 496
 497 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 498 {
 499         struct wpa_supplicant *wpa_s = eloop_ctx;
 500         wpa_printf(MSG_DEBUG,
 501                    "P2P: Complete previously requested removal of %s",
 502                    wpa_s->ifname);
 503         wpas_p2p_disconnect(wpa_s);
 504 }
 505
 506
 507 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 508                                       struct wpa_supplicant *calling_wpa_s)
 509 {
 510         if (calling_wpa_s == wpa_s && wpa_s &&
 511             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 512                 /*
 513                  * The calling wpa_s instance is going to be removed. Do that
 514                  * from an eloop callback to keep the instance available until
 515                  * the caller has returned. This my be needed, e.g., to provide
 516                  * control interface responses on the per-interface socket.
 517                  */
 518                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 519                                            wpa_s, NULL) < 0)
 520                         return -1;
 521                 return 0;
 522         }
 523
 524         return wpas_p2p_disconnect(wpa_s);
 525 }
 526
 527
 528 /* Determine total number of clients in active groups where we are the GO */
 529 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 530 {
 531         unsigned int count = 0;
 532         struct wpa_ssid *s;
 533
 534         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 535                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 536                         wpa_printf(MSG_DEBUG,
 537                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 538                                    wpa_s, s, s->disabled, s->p2p_group,
 539                                    s->mode);
 540                         if (!s->disabled && s->p2p_group &&
 541                             s->mode == WPAS_MODE_P2P_GO) {
 542                                 count += p2p_get_group_num_members(
 543                                         wpa_s->p2p_group);
 544                         }
 545                 }
 546         }
 547
 548         return count;
 549 }
 550
 551
 552 static unsigned int p2p_is_active_persistent_group(struct wpa_supplicant *wpa_s)
 553 {
 554         return !wpa_s->p2p_mgmt && wpa_s->current_ssid &&
 555                 !wpa_s->current_ssid->disabled &&
 556                 wpa_s->current_ssid->p2p_group &&
 557                 wpa_s->current_ssid->p2p_persistent_group;
 558 }
 559
 560
 561 static unsigned int p2p_is_active_persistent_go(struct wpa_supplicant *wpa_s)
 562 {
 563         return p2p_is_active_persistent_group(wpa_s) &&
 564                 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO;
 565 }
 566
 567
 568 /* Find an interface for a P2P group where we are the GO */
 569 static struct wpa_supplicant *
 570 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 571 {
 572         struct wpa_supplicant *save = NULL;
 573
 574         if (!wpa_s)
 575                 return NULL;
 576
 577         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 578                 if (!p2p_is_active_persistent_go(wpa_s))
 579                         continue;
 580
 581                 /* Prefer a group with connected clients */
 582                 if (p2p_get_group_num_members(wpa_s->p2p_group))
 583                         return wpa_s;
 584                 save = wpa_s;
 585         }
 586
 587         /* No group with connected clients, so pick the one without (if any) */
 588         return save;
 589 }
 590
 591
 592 static unsigned int p2p_is_active_persistent_cli(struct wpa_supplicant *wpa_s)
 593 {
 594         return p2p_is_active_persistent_group(wpa_s) &&
 595                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
 596 }
 597
 598
 599 /* Find an interface for a P2P group where we are the P2P Client */
 600 static struct wpa_supplicant *
 601 wpas_p2p_get_cli_group(struct wpa_supplicant *wpa_s)
 602 {
 603         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 604                 if (p2p_is_active_persistent_cli(wpa_s))
 605                         return wpa_s;
 606         }
 607
 608         return NULL;
 609 }
 610
 611
 612 /* Find a persistent group where we are the GO */
 613 static struct wpa_ssid *
 614 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
 615 {
 616         struct wpa_ssid *s;
 617
 618         for (s = wpa_s->conf->ssid; s; s = s->next) {
 619                 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
 620                         return s;
 621         }
 622
 623         return NULL;
 624 }
 625
 626
 627 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role,
 628                                 unsigned int *force_freq,
 629                                 unsigned int *pref_freq)
 630 {
 631         struct wpa_supplicant *wpa_s = ctx;
 632         struct wpa_ssid *s;
 633         u8 conncap = P2PS_SETUP_NONE;
 634         unsigned int owned_members = 0;
 635         struct wpa_supplicant *go_wpa_s, *cli_wpa_s;
 636         struct wpa_ssid *persistent_go;
 637         int p2p_no_group_iface;
 638         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
 639
 640         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 641
 642         if (force_freq)
 643                 *force_freq = 0;
 644         if (pref_freq)
 645                 *pref_freq = 0;
 646
 647         size = P2P_MAX_PREF_CHANNELS;
 648         if (force_freq && pref_freq &&
 649             !wpas_p2p_setup_freqs(wpa_s, 0, (int *) force_freq,
 650                                   (int *) pref_freq, 0, pref_freq_list, &size))
 651                 wpas_p2p_set_own_freq_preference(wpa_s,
 652                                                  *force_freq ? *force_freq :
 653                                                  *pref_freq);
 654
 655         /*
 656          * For non-concurrent capable devices:
 657          * If persistent_go, then no new.
 658          * If GO, then no client.
 659          * If client, then no GO.
 660          */
 661         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 662         if (go_wpa_s)
 663                 owned_members = p2p_get_group_num_members(go_wpa_s->p2p_group);
 664         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 665         p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s);
 666         cli_wpa_s = wpas_p2p_get_cli_group(wpa_s);
 667
 668         wpa_printf(MSG_DEBUG,
 669                    "P2P: GO(iface)=%p members=%u CLI(iface)=%p persistent(ssid)=%p",
 670                    go_wpa_s, owned_members, cli_wpa_s, persistent_go);
 671
 672         /* If not concurrent, restrict our choices */
 673         if (p2p_no_group_iface) {
 674                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 675
 676                 if (cli_wpa_s)
 677                         return P2PS_SETUP_NONE;
 678
 679                 if (go_wpa_s) {
 680                         if (role == P2PS_SETUP_CLIENT ||
 681                             incoming == P2PS_SETUP_GROUP_OWNER ||
 682                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 683                                 return P2PS_SETUP_NONE;
 684
 685                         return P2PS_SETUP_GROUP_OWNER;
 686                 }
 687
 688                 if (persistent_go) {
 689                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 690                                 if (!incoming)
 691                                         return P2PS_SETUP_GROUP_OWNER |
 692                                                 P2PS_SETUP_CLIENT;
 693                                 if (incoming == P2PS_SETUP_NEW) {
 694                                         u8 r;
 695
 696                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 697                                             (r & 1))
 698                                                 return P2PS_SETUP_CLIENT;
 699                                         return P2PS_SETUP_GROUP_OWNER;
 700                                 }
 701                         }
 702                 }
 703         }
 704
 705         /* If a required role has been specified, handle it here */
 706         if (role && role != P2PS_SETUP_NEW) {
 707                 switch (incoming) {
 708                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 709                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 710                         /*
 711                          * Peer has an active GO, so if the role allows it and
 712                          * we do not have any active roles, become client.
 713                          */
 714                         if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s &&
 715                             !cli_wpa_s)
 716                                 return P2PS_SETUP_CLIENT;
 717
 718                         /* fall through */
 719
 720                 case P2PS_SETUP_NONE:
 721                 case P2PS_SETUP_NEW:
 722                         conncap = role;
 723                         goto grp_owner;
 724
 725                 case P2PS_SETUP_GROUP_OWNER:
 726                         /*
 727                          * Must be a complimentary role - cannot be a client to
 728                          * more than one peer.
 729                          */
 730                         if (incoming == role || cli_wpa_s)
 731                                 return P2PS_SETUP_NONE;
 732
 733                         return P2PS_SETUP_CLIENT;
 734
 735                 case P2PS_SETUP_CLIENT:
 736                         /* Must be a complimentary role */
 737                         if (incoming != role) {
 738                                 conncap = P2PS_SETUP_GROUP_OWNER;
 739                                 goto grp_owner;
 740                         }
 741
 742                 default:
 743                         return P2PS_SETUP_NONE;
 744                 }
 745         }
 746
 747         /*
 748          * For now, we only will support ownership of one group, and being a
 749          * client of one group. Therefore, if we have either an existing GO
 750          * group, or an existing client group, we will not do a new GO
 751          * negotiation, but rather try to re-use the existing groups.
 752          */
 753         switch (incoming) {
 754         case P2PS_SETUP_NONE:
 755         case P2PS_SETUP_NEW:
 756                 if (cli_wpa_s)
 757                         conncap = P2PS_SETUP_GROUP_OWNER;
 758                 else if (!owned_members)
 759                         conncap = P2PS_SETUP_NEW;
 760                 else if (incoming == P2PS_SETUP_NONE)
 761                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 762                 else
 763                         conncap = P2PS_SETUP_CLIENT;
 764                 break;
 765
 766         case P2PS_SETUP_CLIENT:
 767                 conncap = P2PS_SETUP_GROUP_OWNER;
 768                 break;
 769
 770         case P2PS_SETUP_GROUP_OWNER:
 771                 if (!cli_wpa_s)
 772                         conncap = P2PS_SETUP_CLIENT;
 773                 break;
 774
 775         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 776         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 777                 /*
 778                  * Peer has an active GO, so if the role allows it and
 779                  * we do not have any active roles, become client.
 780                  */
 781                 if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s && !cli_wpa_s)
 782                         return P2PS_SETUP_CLIENT;
 783
 784                 if (cli_wpa_s)
 785                         conncap = P2PS_SETUP_GROUP_OWNER;
 786                 else {
 787                         u8 r;
 788
 789                         if (os_get_random(&r, sizeof(r)) < 0 ||
 790                             (r & 1))
 791                                 conncap = P2PS_SETUP_CLIENT;
 792                         else
 793                                 conncap = P2PS_SETUP_GROUP_OWNER;
 794                 }
 795                 break;
 796
 797         default:
 798                 return P2PS_SETUP_NONE;
 799         }
 800
 801 grp_owner:
 802         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 803             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 804                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 805                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 806
 807                 s = wpas_p2p_get_persistent_go(wpa_s);
 808                 if (!s && !go_wpa_s && p2p_no_group_iface) {
 809                         p2p_set_intended_addr(wpa_s->global->p2p,
 810                                               wpa_s->own_addr);
 811                 } else if (!s && !go_wpa_s) {
 812                         if (wpas_p2p_add_group_interface(wpa_s,
 813                                                          WPA_IF_P2P_GO) < 0) {
 814                                 wpa_printf(MSG_ERROR,
 815                                            "P2P: Failed to allocate a new interface for the group");
 816                                 return P2PS_SETUP_NONE;
 817                         }
 818                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 819                         p2p_set_intended_addr(wpa_s->global->p2p,
 820                                               wpa_s->pending_interface_addr);
 821                 }
 822         }
 823
 824         return conncap;
 825 }
 826
 827
 828 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 829                                  enum p2p_group_removal_reason removal_reason)
 830 {
 831         struct wpa_ssid *ssid;
 832         char *gtype;
 833         const char *reason;
 834
 835         ssid = wpa_s->current_ssid;
 836         if (ssid == NULL) {
 837                 /*
 838                  * The current SSID was not known, but there may still be a
 839                  * pending P2P group interface waiting for provisioning or a
 840                  * P2P group that is trying to reconnect.
 841                  */
 842                 ssid = wpa_s->conf->ssid;
 843                 while (ssid) {
 844                         if (ssid->p2p_group && ssid->disabled != 2)
 845                                 break;
 846                         ssid = ssid->next;
 847                 }
 848                 if (ssid == NULL &&
 849                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 850                 {
 851                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 852                                    "not found");
 853                         return -1;
 854                 }
 855         }
 856         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 857                 gtype = "GO";
 858         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 859                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 860                 wpa_s->reassociate = 0;
 861                 wpa_s->disconnected = 1;
 862                 gtype = "client";
 863         } else
 864                 gtype = "GO";
 865
 866         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 867                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 868
 869         if (os_strcmp(gtype, "client") == 0) {
 870                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 871                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 872                                                 wpa_s, NULL)) {
 873                         wpa_printf(MSG_DEBUG,
 874                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 875                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 876                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 877                                              wpa_s, NULL);
 878                 }
 879         }
 880
 881         if (wpa_s->cross_connect_in_use) {
 882                 wpa_s->cross_connect_in_use = 0;
 883                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 884                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 885                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 886         }
 887         switch (removal_reason) {
 888         case P2P_GROUP_REMOVAL_REQUESTED:
 889                 reason = " reason=REQUESTED";
 890                 break;
 891         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 892                 reason = " reason=FORMATION_FAILED";
 893                 break;
 894         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 895                 reason = " reason=IDLE";
 896                 break;
 897         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 898                 reason = " reason=UNAVAILABLE";
 899                 break;
 900         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 901                 reason = " reason=GO_ENDING_SESSION";
 902                 break;
 903         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 904                 reason = " reason=PSK_FAILURE";
 905                 break;
 906         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 907                 reason = " reason=FREQ_CONFLICT";
 908                 break;
 909         default:
 910                 reason = "";
 911                 break;
 912         }
 913         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 914                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 915                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 916                                wpa_s->ifname, gtype, reason);
 917         }
 918
 919         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 920                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 921         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 922                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 923         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 924                                  wpa_s->parent, NULL) > 0) {
 925                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 926                            "timeout");
 927                 wpa_s->p2p_in_provisioning = 0;
 928                 wpas_p2p_group_formation_failed(wpa_s, 1);
 929         }
 930
 931         wpa_s->p2p_in_invitation = 0;
 932         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
 933         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
 934
 935         /*
 936          * Make sure wait for the first client does not remain active after the
 937          * group has been removed.
 938          */
 939         wpa_s->global->p2p_go_wait_client.sec = 0;
 940
 941         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 942                 struct wpa_global *global;
 943                 char *ifname;
 944                 enum wpa_driver_if_type type;
 945                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 946                         wpa_s->ifname);
 947                 global = wpa_s->global;
 948                 ifname = os_strdup(wpa_s->ifname);
 949                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 950                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 951                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 952                 wpa_s = global->ifaces;
 953                 if (wpa_s && ifname)
 954                         wpa_drv_if_remove(wpa_s, type, ifname);
 955                 os_free(ifname);
 956                 return 1;
 957         }
 958
 959         if (!wpa_s->p2p_go_group_formation_completed) {
 960                 wpa_s->global->p2p_group_formation = NULL;
 961                 wpa_s->p2p_in_provisioning = 0;
 962         }
 963
 964         wpa_s->show_group_started = 0;
 965         os_free(wpa_s->go_params);
 966         wpa_s->go_params = NULL;
 967
 968         os_free(wpa_s->p2p_group_common_freqs);
 969         wpa_s->p2p_group_common_freqs = NULL;
 970         wpa_s->p2p_group_common_freqs_num = 0;
 971
 972         wpa_s->waiting_presence_resp = 0;
 973
 974         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 975         if (ssid && (ssid->p2p_group ||
 976                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 977                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 978                 int id = ssid->id;
 979                 if (ssid == wpa_s->current_ssid) {
 980                         wpa_sm_set_config(wpa_s->wpa, NULL);
 981                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 982                         wpa_s->current_ssid = NULL;
 983                 }
 984                 /*
 985                  * Networks objects created during any P2P activities are not
 986                  * exposed out as they might/will confuse certain non-P2P aware
 987                  * applications since these network objects won't behave like
 988                  * regular ones.
 989                  *
 990                  * Likewise, we don't send out network removed signals for such
 991                  * network objects.
 992                  */
 993                 wpa_config_remove_network(wpa_s->conf, id);
 994                 wpa_supplicant_clear_status(wpa_s);
 995                 wpa_supplicant_cancel_sched_scan(wpa_s);
 996         } else {
 997                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 998                            "found");
 999         }
1000         if (wpa_s->ap_iface)
1001                 wpa_supplicant_ap_deinit(wpa_s);
1002         else
1003                 wpa_drv_deinit_p2p_cli(wpa_s);
1004
1005         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1006
1007         return 0;
1008 }
1009
1010
1011 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
1012                                      u8 *go_dev_addr,
1013                                      const u8 *ssid, size_t ssid_len)
1014 {
1015         struct wpa_bss *bss;
1016         const u8 *bssid;
1017         struct wpabuf *p2p;
1018         u8 group_capab;
1019         const u8 *addr;
1020
1021         if (wpa_s->go_params)
1022                 bssid = wpa_s->go_params->peer_interface_addr;
1023         else
1024                 bssid = wpa_s->bssid;
1025
1026         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
1027         if (bss == NULL && wpa_s->go_params &&
1028             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
1029                 bss = wpa_bss_get_p2p_dev_addr(
1030                         wpa_s, wpa_s->go_params->peer_device_addr);
1031         if (bss == NULL) {
1032                 u8 iface_addr[ETH_ALEN];
1033                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1034                                            iface_addr) == 0)
1035                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1036         }
1037         if (bss == NULL) {
1038                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1039                            "group is persistent - BSS " MACSTR " not found",
1040                            MAC2STR(bssid));
1041                 return 0;
1042         }
1043
1044         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1045         if (p2p == NULL)
1046                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1047                                                          P2P_IE_VENDOR_TYPE);
1048         if (p2p == NULL) {
1049                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1050                            "group is persistent - BSS " MACSTR
1051                            " did not include P2P IE", MAC2STR(bssid));
1052                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1053                             (u8 *) (bss + 1), bss->ie_len);
1054                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1055                             ((u8 *) bss + 1) + bss->ie_len,
1056                             bss->beacon_ie_len);
1057                 return 0;
1058         }
1059
1060         group_capab = p2p_get_group_capab(p2p);
1061         addr = p2p_get_go_dev_addr(p2p);
1062         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1063                    "group_capab=0x%x", group_capab);
1064         if (addr) {
1065                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1066                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1067                            MAC2STR(addr));
1068         } else
1069                 os_memset(go_dev_addr, 0, ETH_ALEN);
1070         wpabuf_free(p2p);
1071
1072         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1073                    "go_dev_addr=" MACSTR,
1074                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1075
1076         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1077 }
1078
1079
1080 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1081                                            struct wpa_ssid *ssid,
1082                                            const u8 *go_dev_addr)
1083 {
1084         struct wpa_ssid *s;
1085         int changed = 0;
1086
1087         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1088                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1089         for (s = wpa_s->conf->ssid; s; s = s->next) {
1090                 if (s->disabled == 2 &&
1091                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1092                     s->ssid_len == ssid->ssid_len &&
1093                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1094                         break;
1095         }
1096
1097         if (s) {
1098                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1099                            "entry");
1100                 if (ssid->passphrase && !s->passphrase)
1101                         changed = 1;
1102                 else if (ssid->passphrase && s->passphrase &&
1103                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1104                         changed = 1;
1105         } else {
1106                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1107                            "entry");
1108                 changed = 1;
1109                 s = wpa_config_add_network(wpa_s->conf);
1110                 if (s == NULL)
1111                         return -1;
1112
1113                 /*
1114                  * Instead of network_added we emit persistent_group_added
1115                  * notification. Also to keep the defense checks in
1116                  * persistent_group obj registration method, we set the
1117                  * relevant flags in s to designate it as a persistent group.
1118                  */
1119                 s->p2p_group = 1;
1120                 s->p2p_persistent_group = 1;
1121                 wpas_notify_persistent_group_added(wpa_s, s);
1122                 wpa_config_set_network_defaults(s);
1123         }
1124
1125         s->p2p_group = 1;
1126         s->p2p_persistent_group = 1;
1127         s->disabled = 2;
1128         s->bssid_set = 1;
1129         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1130         s->mode = ssid->mode;
1131         s->auth_alg = WPA_AUTH_ALG_OPEN;
1132         s->key_mgmt = WPA_KEY_MGMT_PSK;
1133         s->proto = WPA_PROTO_RSN;
1134         s->pairwise_cipher = WPA_CIPHER_CCMP;
1135         s->export_keys = 1;
1136         if (ssid->passphrase) {
1137                 os_free(s->passphrase);
1138                 s->passphrase = os_strdup(ssid->passphrase);
1139         }
1140         if (ssid->psk_set) {
1141                 s->psk_set = 1;
1142                 os_memcpy(s->psk, ssid->psk, 32);
1143         }
1144         if (s->passphrase && !s->psk_set)
1145                 wpa_config_update_psk(s);
1146         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1147                 os_free(s->ssid);
1148                 s->ssid = os_malloc(ssid->ssid_len);
1149         }
1150         if (s->ssid) {
1151                 s->ssid_len = ssid->ssid_len;
1152                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1153         }
1154         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1155                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1156                 wpa_s->global->add_psk = NULL;
1157                 changed = 1;
1158         }
1159
1160         if (changed && wpa_s->conf->update_config &&
1161             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1162                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1163         }
1164
1165         return s->id;
1166 }
1167
1168
1169 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1170                                                  const u8 *addr)
1171 {
1172         struct wpa_ssid *ssid, *s;
1173         u8 *n;
1174         size_t i;
1175         int found = 0;
1176         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1177
1178         ssid = wpa_s->current_ssid;
1179         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1180             !ssid->p2p_persistent_group)
1181                 return;
1182
1183         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1184                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1185                         continue;
1186
1187                 if (s->ssid_len == ssid->ssid_len &&
1188                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1189                         break;
1190         }
1191
1192         if (s == NULL)
1193                 return;
1194
1195         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1196                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1197                               ETH_ALEN) != 0)
1198                         continue;
1199
1200                 if (i == s->num_p2p_clients - 1)
1201                         return; /* already the most recent entry */
1202
1203                 /* move the entry to mark it most recent */
1204                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1205                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1206                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1207                 os_memcpy(s->p2p_client_list +
1208                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1209                           ETH_ALEN);
1210                 os_memset(s->p2p_client_list +
1211                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1212                           0xff, ETH_ALEN);
1213                 found = 1;
1214                 break;
1215         }
1216
1217         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1218                 n = os_realloc_array(s->p2p_client_list,
1219                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1220                 if (n == NULL)
1221                         return;
1222                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1223                           ETH_ALEN);
1224                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1225                           0xff, ETH_ALEN);
1226                 s->p2p_client_list = n;
1227                 s->num_p2p_clients++;
1228         } else if (!found && s->p2p_client_list) {
1229                 /* Not enough room for an additional entry - drop the oldest
1230                  * entry */
1231                 os_memmove(s->p2p_client_list,
1232                            s->p2p_client_list + 2 * ETH_ALEN,
1233                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1234                 os_memcpy(s->p2p_client_list +
1235                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1236                           addr, ETH_ALEN);
1237                 os_memset(s->p2p_client_list +
1238                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1239                           0xff, ETH_ALEN);
1240         }
1241
1242         if (p2p_wpa_s->conf->update_config &&
1243             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1244                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1245 }
1246
1247
1248 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1249                                    int go, struct wpa_ssid *ssid, int freq,
1250                                    const u8 *psk, const char *passphrase,
1251                                    const u8 *go_dev_addr, int persistent,
1252                                    const char *extra)
1253 {
1254         const char *ssid_txt;
1255         char psk_txt[65];
1256
1257         if (psk)
1258                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1259         else
1260                 psk_txt[0] = '\0';
1261
1262         if (ssid)
1263                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1264         else
1265                 ssid_txt = "";
1266
1267         if (passphrase && passphrase[0] == '\0')
1268                 passphrase = NULL;
1269
1270         /*
1271          * Include PSK/passphrase only in the control interface message and
1272          * leave it out from the debug log entry.
1273          */
1274         wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
1275                             P2P_EVENT_GROUP_STARTED
1276                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1277                             MACSTR "%s%s",
1278                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1279                             psk ? " psk=" : "", psk_txt,
1280                             passphrase ? " passphrase=\"" : "",
1281                             passphrase ? passphrase : "",
1282                             passphrase ? "\"" : "",
1283                             MAC2STR(go_dev_addr),
1284                             persistent ? " [PERSISTENT]" : "", extra);
1285         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1286                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1287                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1288                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1289                    extra);
1290 }
1291
1292
1293 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1294                                            int success, int already_deleted)
1295 {
1296         struct wpa_ssid *ssid;
1297         int client;
1298         int persistent;
1299         u8 go_dev_addr[ETH_ALEN];
1300         int network_id = -1;
1301
1302         /*
1303          * This callback is likely called for the main interface. Update wpa_s
1304          * to use the group interface if a new interface was created for the
1305          * group.
1306          */
1307         if (wpa_s->global->p2p_group_formation)
1308                 wpa_s = wpa_s->global->p2p_group_formation;
1309         if (wpa_s->p2p_go_group_formation_completed) {
1310                 wpa_s->global->p2p_group_formation = NULL;
1311                 wpa_s->p2p_in_provisioning = 0;
1312         }
1313         wpa_s->p2p_in_invitation = 0;
1314         wpa_s->group_formation_reported = 1;
1315
1316         if (!success) {
1317                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1318                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1319                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1320                 if (already_deleted)
1321                         return;
1322                 wpas_p2p_group_delete(wpa_s,
1323                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1324                 return;
1325         }
1326
1327         wpa_msg_global(wpa_s->parent, MSG_INFO,
1328                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1329
1330         ssid = wpa_s->current_ssid;
1331         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1332                 ssid->mode = WPAS_MODE_P2P_GO;
1333                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1334                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1335         }
1336
1337         persistent = 0;
1338         if (ssid) {
1339                 client = ssid->mode == WPAS_MODE_INFRA;
1340                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1341                         persistent = ssid->p2p_persistent_group;
1342                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1343                                   ETH_ALEN);
1344                 } else
1345                         persistent = wpas_p2p_persistent_group(wpa_s,
1346                                                                go_dev_addr,
1347                                                                ssid->ssid,
1348                                                                ssid->ssid_len);
1349         } else {
1350                 client = wpa_s->p2p_group_interface ==
1351                         P2P_GROUP_INTERFACE_CLIENT;
1352                 os_memset(go_dev_addr, 0, ETH_ALEN);
1353         }
1354
1355         wpa_s->show_group_started = 0;
1356         if (client) {
1357                 /*
1358                  * Indicate event only after successfully completed 4-way
1359                  * handshake, i.e., when the interface is ready for data
1360                  * packets.
1361                  */
1362                 wpa_s->show_group_started = 1;
1363         } else {
1364                 wpas_p2p_group_started(wpa_s, 1, ssid,
1365                                        ssid ? ssid->frequency : 0,
1366                                        ssid && ssid->passphrase == NULL &&
1367                                        ssid->psk_set ? ssid->psk : NULL,
1368                                        ssid ? ssid->passphrase : NULL,
1369                                        go_dev_addr, persistent, "");
1370                 wpas_p2p_cross_connect_setup(wpa_s);
1371                 wpas_p2p_set_group_idle_timeout(wpa_s);
1372         }
1373
1374         if (persistent)
1375                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
1376                                                              ssid, go_dev_addr);
1377         else {
1378                 os_free(wpa_s->global->add_psk);
1379                 wpa_s->global->add_psk = NULL;
1380         }
1381         if (network_id < 0 && ssid)
1382                 network_id = ssid->id;
1383         if (!client) {
1384                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1385                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1386         }
1387 }
1388
1389
1390 struct send_action_work {
1391         unsigned int freq;
1392         u8 dst[ETH_ALEN];
1393         u8 src[ETH_ALEN];
1394         u8 bssid[ETH_ALEN];
1395         size_t len;
1396         unsigned int wait_time;
1397         u8 buf[0];
1398 };
1399
1400
1401 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s)
1402 {
1403         struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx;
1404
1405         wpa_printf(MSG_DEBUG,
1406                    "P2P: Free Action frame radio work @%p (freq=%u dst="
1407                    MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)",
1408                    wpa_s->p2p_send_action_work, awork->freq,
1409                    MAC2STR(awork->dst), MAC2STR(awork->src),
1410                    MAC2STR(awork->bssid), awork->wait_time);
1411         wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame",
1412                     awork->buf, awork->len);
1413         os_free(awork);
1414         wpa_s->p2p_send_action_work->ctx = NULL;
1415         radio_work_done(wpa_s->p2p_send_action_work);
1416         wpa_s->p2p_send_action_work = NULL;
1417 }
1418
1419
1420 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1421                                               void *timeout_ctx)
1422 {
1423         struct wpa_supplicant *wpa_s = eloop_ctx;
1424
1425         if (!wpa_s->p2p_send_action_work)
1426                 return;
1427
1428         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1429         wpas_p2p_free_send_action_work(wpa_s);
1430 }
1431
1432
1433 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1434 {
1435         if (wpa_s->p2p_send_action_work) {
1436                 struct send_action_work *awork;
1437
1438                 awork = wpa_s->p2p_send_action_work->ctx;
1439                 wpa_printf(MSG_DEBUG,
1440                            "P2P: Clear Action TX work @%p (wait_time=%u)",
1441                            wpa_s->p2p_send_action_work, awork->wait_time);
1442                 if (awork->wait_time == 0) {
1443                         wpas_p2p_free_send_action_work(wpa_s);
1444                 } else {
1445                         /*
1446                          * In theory, this should not be needed, but number of
1447                          * places in the P2P code is still using non-zero wait
1448                          * time for the last Action frame in the sequence and
1449                          * some of these do not call send_action_done().
1450                          */
1451                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1452                                              wpa_s, NULL);
1453                         eloop_register_timeout(
1454                                 0, awork->wait_time * 1000,
1455                                 wpas_p2p_send_action_work_timeout,
1456                                 wpa_s, NULL);
1457                 }
1458         }
1459 }
1460
1461
1462 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1463                                            unsigned int freq,
1464                                            const u8 *dst, const u8 *src,
1465                                            const u8 *bssid,
1466                                            const u8 *data, size_t data_len,
1467                                            enum offchannel_send_action_result
1468                                            result)
1469 {
1470         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1471
1472         wpas_p2p_action_tx_clear(wpa_s);
1473
1474         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1475                 return;
1476
1477         switch (result) {
1478         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1479                 res = P2P_SEND_ACTION_SUCCESS;
1480                 break;
1481         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1482                 res = P2P_SEND_ACTION_NO_ACK;
1483                 break;
1484         case OFFCHANNEL_SEND_ACTION_FAILED:
1485                 res = P2P_SEND_ACTION_FAILED;
1486                 break;
1487         }
1488
1489         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1490
1491         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1492             wpa_s->pending_pd_before_join &&
1493             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1494              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1495             wpa_s->p2p_fallback_to_go_neg) {
1496                 wpa_s->pending_pd_before_join = 0;
1497                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1498                         "during p2p_connect-auto");
1499                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1500                                P2P_EVENT_FALLBACK_TO_GO_NEG
1501                                "reason=no-ACK-to-PD-Req");
1502                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1503                 return;
1504         }
1505 }
1506
1507
1508 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1509 {
1510         struct wpa_supplicant *wpa_s = work->wpa_s;
1511         struct send_action_work *awork = work->ctx;
1512
1513         if (deinit) {
1514                 if (work->started) {
1515                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1516                                              wpa_s, NULL);
1517                         wpa_s->p2p_send_action_work = NULL;
1518                         offchannel_send_action_done(wpa_s);
1519                 }
1520                 os_free(awork);
1521                 return;
1522         }
1523
1524         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1525                                    awork->bssid, awork->buf, awork->len,
1526                                    awork->wait_time,
1527                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1528                 os_free(awork);
1529                 radio_work_done(work);
1530                 return;
1531         }
1532         wpa_s->p2p_send_action_work = work;
1533 }
1534
1535
1536 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1537                                  unsigned int freq, const u8 *dst,
1538                                  const u8 *src, const u8 *bssid, const u8 *buf,
1539                                  size_t len, unsigned int wait_time)
1540 {
1541         struct send_action_work *awork;
1542
1543         if (wpa_s->p2p_send_action_work) {
1544                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1545                 return -1;
1546         }
1547
1548         awork = os_zalloc(sizeof(*awork) + len);
1549         if (awork == NULL)
1550                 return -1;
1551
1552         awork->freq = freq;
1553         os_memcpy(awork->dst, dst, ETH_ALEN);
1554         os_memcpy(awork->src, src, ETH_ALEN);
1555         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1556         awork->len = len;
1557         awork->wait_time = wait_time;
1558         os_memcpy(awork->buf, buf, len);
1559
1560         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1561                            wpas_send_action_cb, awork) < 0) {
1562                 os_free(awork);
1563                 return -1;
1564         }
1565
1566         return 0;
1567 }
1568
1569
1570 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1571                             const u8 *src, const u8 *bssid, const u8 *buf,
1572                             size_t len, unsigned int wait_time)
1573 {
1574         struct wpa_supplicant *wpa_s = ctx;
1575         int listen_freq = -1, send_freq = -1;
1576
1577         if (wpa_s->p2p_listen_work)
1578                 listen_freq = wpa_s->p2p_listen_work->freq;
1579         if (wpa_s->p2p_send_action_work)
1580                 send_freq = wpa_s->p2p_send_action_work->freq;
1581         if (listen_freq != (int) freq && send_freq != (int) freq) {
1582                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1583                            listen_freq, send_freq);
1584                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1585                                              len, wait_time);
1586         }
1587
1588         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1589         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1590                                       wait_time,
1591                                       wpas_p2p_send_action_tx_status, 1);
1592 }
1593
1594
1595 static void wpas_send_action_done(void *ctx)
1596 {
1597         struct wpa_supplicant *wpa_s = ctx;
1598
1599         if (wpa_s->p2p_send_action_work) {
1600                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1601                                      wpa_s, NULL);
1602                 os_free(wpa_s->p2p_send_action_work->ctx);
1603                 radio_work_done(wpa_s->p2p_send_action_work);
1604                 wpa_s->p2p_send_action_work = NULL;
1605         }
1606
1607         offchannel_send_action_done(wpa_s);
1608 }
1609
1610
1611 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1612                                     struct p2p_go_neg_results *params)
1613 {
1614         if (wpa_s->go_params == NULL) {
1615                 wpa_s->go_params = os_malloc(sizeof(*params));
1616                 if (wpa_s->go_params == NULL)
1617                         return -1;
1618         }
1619         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1620         return 0;
1621 }
1622
1623
1624 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1625                                     struct p2p_go_neg_results *res)
1626 {
1627         wpa_s->group_formation_reported = 0;
1628         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1629                    " dev_addr " MACSTR " wps_method %d",
1630                    MAC2STR(res->peer_interface_addr),
1631                    MAC2STR(res->peer_device_addr), res->wps_method);
1632         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1633                           res->ssid, res->ssid_len);
1634         wpa_supplicant_ap_deinit(wpa_s);
1635         wpas_copy_go_neg_results(wpa_s, res);
1636         if (res->wps_method == WPS_PBC) {
1637                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1638 #ifdef CONFIG_WPS_NFC
1639         } else if (res->wps_method == WPS_NFC) {
1640                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1641                                    res->peer_interface_addr,
1642                                    wpa_s->parent->p2p_oob_dev_pw,
1643                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1644                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1645                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1646                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1647                                    NULL,
1648                                    NULL, 0, 0);
1649 #endif /* CONFIG_WPS_NFC */
1650         } else {
1651                 u16 dev_pw_id = DEV_PW_DEFAULT;
1652                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1653                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1654                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1655                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1656                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1657                                    wpa_s->p2p_pin, 1, dev_pw_id);
1658         }
1659 }
1660
1661
1662 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1663                                   struct wpa_ssid *ssid)
1664 {
1665         struct wpa_ssid *persistent;
1666         struct psk_list_entry *psk;
1667         struct hostapd_data *hapd;
1668
1669         if (!wpa_s->ap_iface)
1670                 return;
1671
1672         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1673                                              ssid->ssid_len);
1674         if (persistent == NULL)
1675                 return;
1676
1677         hapd = wpa_s->ap_iface->bss[0];
1678
1679         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1680                          list) {
1681                 struct hostapd_wpa_psk *hpsk;
1682
1683                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1684                         MACSTR " psk=%d",
1685                         MAC2STR(psk->addr), psk->p2p);
1686                 hpsk = os_zalloc(sizeof(*hpsk));
1687                 if (hpsk == NULL)
1688                         break;
1689                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1690                 if (psk->p2p)
1691                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1692                 else
1693                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1694                 hpsk->next = hapd->conf->ssid.wpa_psk;
1695                 hapd->conf->ssid.wpa_psk = hpsk;
1696         }
1697 }
1698
1699
1700 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1701 {
1702         unsigned int i;
1703
1704         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1705                 wpa_s->p2p_group_common_freqs_num);
1706
1707         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1708                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1709                         i, wpa_s->p2p_group_common_freqs[i]);
1710 }
1711
1712
1713 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1714                                            struct p2p_go_neg_results *params)
1715 {
1716         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1717
1718         wpa_s->p2p_group_common_freqs_num = 0;
1719         os_free(wpa_s->p2p_group_common_freqs);
1720         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1721         if (!wpa_s->p2p_group_common_freqs)
1722                 return;
1723
1724         for (i = 0; i < len; i++) {
1725                 if (!wpa_s->go_params->freq_list[i])
1726                         break;
1727                 wpa_s->p2p_group_common_freqs[i] =
1728                         wpa_s->go_params->freq_list[i];
1729         }
1730         wpa_s->p2p_group_common_freqs_num = i;
1731 }
1732
1733
1734 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1735 {
1736 #ifndef CONFIG_NO_CONFIG_WRITE
1737         if (wpa_s->parent->conf->update_config &&
1738             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1739                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1740 #endif /* CONFIG_NO_CONFIG_WRITE */
1741 }
1742
1743
1744 static void p2p_go_configured(void *ctx, void *data)
1745 {
1746         struct wpa_supplicant *wpa_s = ctx;
1747         struct p2p_go_neg_results *params = data;
1748         struct wpa_ssid *ssid;
1749         int network_id = -1;
1750
1751         wpa_s->ap_configured_cb = NULL;
1752         wpa_s->ap_configured_cb_ctx = NULL;
1753         wpa_s->ap_configured_cb_data = NULL;
1754         if (!wpa_s->go_params) {
1755                 wpa_printf(MSG_ERROR,
1756                            "P2P: p2p_go_configured() called with wpa_s->go_params == NULL");
1757                 return;
1758         }
1759
1760         p2p_go_save_group_common_freqs(wpa_s, params);
1761         p2p_go_dump_common_freqs(wpa_s);
1762
1763         ssid = wpa_s->current_ssid;
1764         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1765                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1766                 if (wpa_s->global->p2p_group_formation == wpa_s)
1767                         wpa_s->global->p2p_group_formation = NULL;
1768                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1769                                        params->passphrase[0] == '\0' ?
1770                                        params->psk : NULL,
1771                                        params->passphrase,
1772                                        wpa_s->global->p2p_dev_addr,
1773                                        params->persistent_group, "");
1774                 wpa_s->group_formation_reported = 1;
1775
1776                 if (wpa_s->parent->p2ps_method_config_any) {
1777                         if (is_zero_ether_addr(wpa_s->parent->p2ps_join_addr)) {
1778                                 wpa_dbg(wpa_s, MSG_DEBUG,
1779                                         "P2PS: Setting default PIN for ANY");
1780                                 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1781                                                           "12345670", NULL, 0,
1782                                                           0);
1783                         } else {
1784                                 wpa_dbg(wpa_s, MSG_DEBUG,
1785                                         "P2PS: Setting default PIN for " MACSTR,
1786                                         MAC2STR(wpa_s->parent->p2ps_join_addr));
1787                                 wpa_supplicant_ap_wps_pin(
1788                                         wpa_s, wpa_s->parent->p2ps_join_addr,
1789                                         "12345670", NULL, 0, 0);
1790                         }
1791                         wpa_s->parent->p2ps_method_config_any = 0;
1792                 }
1793
1794                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1795                 if (params->persistent_group) {
1796                         network_id = wpas_p2p_store_persistent_group(
1797                                 wpa_s->parent, ssid,
1798                                 wpa_s->global->p2p_dev_addr);
1799                         wpas_p2p_add_psk_list(wpa_s, ssid);
1800                 }
1801                 if (network_id < 0)
1802                         network_id = ssid->id;
1803                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1804                 wpas_p2p_cross_connect_setup(wpa_s);
1805                 wpas_p2p_set_group_idle_timeout(wpa_s);
1806
1807                 if (wpa_s->p2p_first_connection_timeout) {
1808                         wpa_dbg(wpa_s, MSG_DEBUG,
1809                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1810                                 wpa_s->p2p_first_connection_timeout);
1811                         wpa_s->p2p_go_group_formation_completed = 0;
1812                         wpa_s->global->p2p_group_formation = wpa_s;
1813                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1814                                              wpa_s->parent, NULL);
1815                         eloop_register_timeout(
1816                                 wpa_s->p2p_first_connection_timeout, 0,
1817                                 wpas_p2p_group_formation_timeout,
1818                                 wpa_s->parent, NULL);
1819                 }
1820
1821                 return;
1822         }
1823
1824         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1825         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1826                                               params->peer_interface_addr)) {
1827                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1828                            "filtering");
1829                 return;
1830         }
1831         if (params->wps_method == WPS_PBC) {
1832                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1833                                           params->peer_device_addr);
1834 #ifdef CONFIG_WPS_NFC
1835         } else if (params->wps_method == WPS_NFC) {
1836                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1837                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1838                     !wpa_s->parent->p2p_oob_dev_pw) {
1839                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1840                         return;
1841                 }
1842                 wpas_ap_wps_add_nfc_pw(
1843                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1844                         wpa_s->parent->p2p_oob_dev_pw,
1845                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1846                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1847 #endif /* CONFIG_WPS_NFC */
1848         } else if (wpa_s->p2p_pin[0])
1849                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1850                                           wpa_s->p2p_pin, NULL, 0, 0);
1851         os_free(wpa_s->go_params);
1852         wpa_s->go_params = NULL;
1853 }
1854
1855
1856 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1857                               struct p2p_go_neg_results *params,
1858                               int group_formation)
1859 {
1860         struct wpa_ssid *ssid;
1861
1862         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1863         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1864                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1865                         "results");
1866                 return;
1867         }
1868
1869         ssid = wpa_config_add_network(wpa_s->conf);
1870         if (ssid == NULL) {
1871                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1872                 return;
1873         }
1874
1875         wpa_s->show_group_started = 0;
1876         wpa_s->p2p_go_group_formation_completed = 0;
1877         wpa_s->group_formation_reported = 0;
1878         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1879
1880         wpa_config_set_network_defaults(ssid);
1881         ssid->temporary = 1;
1882         ssid->p2p_group = 1;
1883         ssid->p2p_persistent_group = params->persistent_group;
1884         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1885                 WPAS_MODE_P2P_GO;
1886         ssid->frequency = params->freq;
1887         ssid->ht40 = params->ht40;
1888         ssid->vht = params->vht;
1889         ssid->max_oper_chwidth = params->max_oper_chwidth;
1890         ssid->vht_center_freq2 = params->vht_center_freq2;
1891         ssid->ssid = os_zalloc(params->ssid_len + 1);
1892         if (ssid->ssid) {
1893                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1894                 ssid->ssid_len = params->ssid_len;
1895         }
1896         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1897         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1898         ssid->proto = WPA_PROTO_RSN;
1899         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1900         ssid->group_cipher = WPA_CIPHER_CCMP;
1901         if (params->freq > 56160) {
1902                 /*
1903                  * Enable GCMP instead of CCMP as pairwise_cipher and
1904                  * group_cipher in 60 GHz.
1905                  */
1906                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1907                 ssid->group_cipher = WPA_CIPHER_GCMP;
1908         }
1909         if (os_strlen(params->passphrase) > 0) {
1910                 ssid->passphrase = os_strdup(params->passphrase);
1911                 if (ssid->passphrase == NULL) {
1912                         wpa_msg_global(wpa_s, MSG_ERROR,
1913                                        "P2P: Failed to copy passphrase for GO");
1914                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1915                         return;
1916                 }
1917         } else
1918                 ssid->passphrase = NULL;
1919         ssid->psk_set = params->psk_set;
1920         if (ssid->psk_set)
1921                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1922         else if (ssid->passphrase)
1923                 wpa_config_update_psk(ssid);
1924         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1925
1926         wpa_s->ap_configured_cb = p2p_go_configured;
1927         wpa_s->ap_configured_cb_ctx = wpa_s;
1928         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1929         wpa_s->scan_req = NORMAL_SCAN_REQ;
1930         wpa_s->connect_without_scan = ssid;
1931         wpa_s->reassociate = 1;
1932         wpa_s->disconnected = 0;
1933         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1934                 "start GO)");
1935         wpa_supplicant_req_scan(wpa_s, 0, 0);
1936 }
1937
1938
1939 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1940                                   const struct wpa_supplicant *src)
1941 {
1942         struct wpa_config *d;
1943         const struct wpa_config *s;
1944
1945         d = dst->conf;
1946         s = src->conf;
1947
1948 #define C(n) if (s->n) d->n = os_strdup(s->n)
1949         C(device_name);
1950         C(manufacturer);
1951         C(model_name);
1952         C(model_number);
1953         C(serial_number);
1954         C(config_methods);
1955 #undef C
1956
1957         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1958         os_memcpy(d->sec_device_type, s->sec_device_type,
1959                   sizeof(d->sec_device_type));
1960         d->num_sec_device_types = s->num_sec_device_types;
1961
1962         d->p2p_group_idle = s->p2p_group_idle;
1963         d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
1964         d->p2p_intra_bss = s->p2p_intra_bss;
1965         d->persistent_reconnect = s->persistent_reconnect;
1966         d->max_num_sta = s->max_num_sta;
1967         d->pbc_in_m1 = s->pbc_in_m1;
1968         d->ignore_old_scan_res = s->ignore_old_scan_res;
1969         d->beacon_int = s->beacon_int;
1970         d->dtim_period = s->dtim_period;
1971         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1972         d->disassoc_low_ack = s->disassoc_low_ack;
1973         d->disable_scan_offload = s->disable_scan_offload;
1974         d->passive_scan = s->passive_scan;
1975
1976         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1977                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1978                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1979         }
1980         d->p2p_cli_probe = s->p2p_cli_probe;
1981 }
1982
1983
1984 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1985                                       char *ifname, size_t len)
1986 {
1987         char *ifname_ptr = wpa_s->ifname;
1988
1989         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1990                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1991                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1992         }
1993
1994         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1995         if (os_strlen(ifname) >= IFNAMSIZ &&
1996             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1997                 int res;
1998
1999                 /* Try to avoid going over the IFNAMSIZ length limit */
2000                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
2001                 if (os_snprintf_error(len, res) && len)
2002                         ifname[len - 1] = '\0';
2003         }
2004 }
2005
2006
2007 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
2008                                         enum wpa_driver_if_type type)
2009 {
2010         char ifname[120], force_ifname[120];
2011
2012         if (wpa_s->pending_interface_name[0]) {
2013                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
2014                            "- skip creation of a new one");
2015                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
2016                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
2017                                    "unknown?! ifname='%s'",
2018                                    wpa_s->pending_interface_name);
2019                         return -1;
2020                 }
2021                 return 0;
2022         }
2023
2024         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
2025         force_ifname[0] = '\0';
2026
2027         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
2028                    ifname);
2029         wpa_s->p2p_group_idx++;
2030
2031         wpa_s->pending_interface_type = type;
2032         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
2033                            wpa_s->pending_interface_addr, NULL) < 0) {
2034                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
2035                            "interface");
2036                 return -1;
2037         }
2038
2039         if (force_ifname[0]) {
2040                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2041                            force_ifname);
2042                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2043                            sizeof(wpa_s->pending_interface_name));
2044         } else
2045                 os_strlcpy(wpa_s->pending_interface_name, ifname,
2046                            sizeof(wpa_s->pending_interface_name));
2047         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2048                    MACSTR, wpa_s->pending_interface_name,
2049                    MAC2STR(wpa_s->pending_interface_addr));
2050
2051         return 0;
2052 }
2053
2054
2055 static void wpas_p2p_remove_pending_group_interface(
2056         struct wpa_supplicant *wpa_s)
2057 {
2058         if (!wpa_s->pending_interface_name[0] ||
2059             is_zero_ether_addr(wpa_s->pending_interface_addr))
2060                 return; /* No pending virtual interface */
2061
2062         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2063                    wpa_s->pending_interface_name);
2064         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2065                           wpa_s->pending_interface_name);
2066         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2067         wpa_s->pending_interface_name[0] = '\0';
2068         wpa_s->global->pending_group_iface_for_p2ps = 0;
2069 }
2070
2071
2072 static struct wpa_supplicant *
2073 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2074 {
2075         struct wpa_interface iface;
2076         struct wpa_supplicant *group_wpa_s;
2077
2078         if (!wpa_s->pending_interface_name[0]) {
2079                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2080                 if (!wpas_p2p_create_iface(wpa_s))
2081                         return NULL;
2082                 /*
2083                  * Something has forced us to remove the pending interface; try
2084                  * to create a new one and hope for the best that we will get
2085                  * the same local address.
2086                  */
2087                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2088                                                  WPA_IF_P2P_CLIENT) < 0)
2089                         return NULL;
2090         }
2091
2092         os_memset(&iface, 0, sizeof(iface));
2093         iface.ifname = wpa_s->pending_interface_name;
2094         iface.driver = wpa_s->driver->name;
2095         if (wpa_s->conf->ctrl_interface == NULL &&
2096             wpa_s->parent != wpa_s &&
2097             wpa_s->p2p_mgmt &&
2098             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2099                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2100         else
2101                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2102         iface.driver_param = wpa_s->conf->driver_param;
2103         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2104         if (group_wpa_s == NULL) {
2105                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2106                            "wpa_supplicant interface");
2107                 return NULL;
2108         }
2109         wpa_s->pending_interface_name[0] = '\0';
2110         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2111                 P2P_GROUP_INTERFACE_CLIENT;
2112         wpa_s->global->p2p_group_formation = group_wpa_s;
2113         wpa_s->global->pending_group_iface_for_p2ps = 0;
2114
2115         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2116
2117         return group_wpa_s;
2118 }
2119
2120
2121 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2122                                              void *timeout_ctx)
2123 {
2124         struct wpa_supplicant *wpa_s = eloop_ctx;
2125         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2126         wpas_p2p_group_formation_failed(wpa_s, 0);
2127 }
2128
2129
2130 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2131                                             int already_deleted)
2132 {
2133         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2134                              wpa_s->parent, NULL);
2135         if (wpa_s->global->p2p)
2136                 p2p_group_formation_failed(wpa_s->global->p2p);
2137         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2138 }
2139
2140
2141 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2142 {
2143         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2144         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2145                              wpa_s->parent, NULL);
2146         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2147                                wpa_s->parent, NULL);
2148         wpa_s->global->p2p_fail_on_wps_complete = 0;
2149 }
2150
2151
2152 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2153 {
2154         if (wpa_s->global->p2p_group_formation != wpa_s)
2155                 return;
2156         /* Speed up group formation timeout since this cannot succeed */
2157         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2158                              wpa_s->parent, NULL);
2159         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2160                                wpa_s->parent, NULL);
2161 }
2162
2163
2164 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2165 {
2166         struct wpa_supplicant *wpa_s = ctx;
2167
2168         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2169                 wpa_drv_cancel_remain_on_channel(wpa_s);
2170                 wpa_s->off_channel_freq = 0;
2171                 wpa_s->roc_waiting_drv_freq = 0;
2172         }
2173
2174         if (res->status) {
2175                 wpa_msg_global(wpa_s, MSG_INFO,
2176                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2177                                res->status);
2178                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2179                 wpas_p2p_remove_pending_group_interface(wpa_s);
2180                 return;
2181         }
2182
2183         if (!res->role_go) {
2184                 /* Inform driver of the operating channel of GO. */
2185                 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2186         }
2187
2188         if (wpa_s->p2p_go_ht40)
2189                 res->ht40 = 1;
2190         if (wpa_s->p2p_go_vht)
2191                 res->vht = 1;
2192         res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth;
2193         res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2;
2194
2195         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2196                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2197                        " wps_method=%s",
2198                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2199                        MAC2STR(res->peer_device_addr),
2200                        MAC2STR(res->peer_interface_addr),
2201                        p2p_wps_method_text(res->wps_method));
2202         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2203
2204         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2205                 struct wpa_ssid *ssid;
2206                 ssid = wpa_config_get_network(wpa_s->conf,
2207                                               wpa_s->p2p_persistent_id);
2208                 if (ssid && ssid->disabled == 2 &&
2209                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2210                         size_t len = os_strlen(ssid->passphrase);
2211                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2212                                    "on requested persistent group");
2213                         os_memcpy(res->passphrase, ssid->passphrase, len);
2214                         res->passphrase[len] = '\0';
2215                 }
2216         }
2217
2218         if (wpa_s->create_p2p_iface) {
2219                 struct wpa_supplicant *group_wpa_s =
2220                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2221                 if (group_wpa_s == NULL) {
2222                         wpas_p2p_remove_pending_group_interface(wpa_s);
2223                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2224                                              wpa_s, NULL);
2225                         wpas_p2p_group_formation_failed(wpa_s, 1);
2226                         return;
2227                 }
2228                 if (group_wpa_s != wpa_s) {
2229                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2230                                   sizeof(group_wpa_s->p2p_pin));
2231                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2232                 }
2233                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2234                 wpa_s->pending_interface_name[0] = '\0';
2235                 group_wpa_s->p2p_in_provisioning = 1;
2236
2237                 if (res->role_go) {
2238                         wpas_start_wps_go(group_wpa_s, res, 1);
2239                 } else {
2240                         os_get_reltime(&group_wpa_s->scan_min_time);
2241                         wpas_start_wps_enrollee(group_wpa_s, res);
2242                 }
2243         } else {
2244                 wpa_s->p2p_in_provisioning = 1;
2245                 wpa_s->global->p2p_group_formation = wpa_s;
2246
2247                 if (res->role_go) {
2248                         wpas_start_wps_go(wpa_s, res, 1);
2249                 } else {
2250                         os_get_reltime(&wpa_s->scan_min_time);
2251                         wpas_start_wps_enrollee(ctx, res);
2252                 }
2253         }
2254
2255         wpa_s->p2p_long_listen = 0;
2256         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2257
2258         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2259         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2260                                (res->peer_config_timeout % 100) * 10000,
2261                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2262 }
2263
2264
2265 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2266                                u8 go_intent)
2267 {
2268         struct wpa_supplicant *wpa_s = ctx;
2269         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2270                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2271                        dev_passwd_id, go_intent);
2272
2273         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2274 }
2275
2276
2277 static void wpas_dev_found(void *ctx, const u8 *addr,
2278                            const struct p2p_peer_info *info,
2279                            int new_device)
2280 {
2281 #ifndef CONFIG_NO_STDOUT_DEBUG
2282         struct wpa_supplicant *wpa_s = ctx;
2283         char devtype[WPS_DEV_TYPE_BUFSIZE];
2284         char *wfd_dev_info_hex = NULL;
2285
2286 #ifdef CONFIG_WIFI_DISPLAY
2287         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2288                                                     WFD_SUBELEM_DEVICE_INFO);
2289 #endif /* CONFIG_WIFI_DISPLAY */
2290
2291         if (info->p2ps_instance) {
2292                 char str[256];
2293                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2294                 size_t len = wpabuf_len(info->p2ps_instance);
2295
2296                 while (len) {
2297                         u32 id;
2298                         u16 methods;
2299                         u8 str_len;
2300
2301                         if (len < 4 + 2 + 1)
2302                                 break;
2303                         id = WPA_GET_LE32(buf);
2304                         buf += sizeof(u32);
2305                         methods = WPA_GET_BE16(buf);
2306                         buf += sizeof(u16);
2307                         str_len = *buf++;
2308                         if (str_len > len - 4 - 2 - 1)
2309                                 break;
2310                         os_memcpy(str, buf, str_len);
2311                         str[str_len] = '\0';
2312                         buf += str_len;
2313                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2314
2315                         wpa_msg_global(wpa_s, MSG_INFO,
2316                                        P2P_EVENT_DEVICE_FOUND MACSTR
2317                                        " p2p_dev_addr=" MACSTR
2318                                        " pri_dev_type=%s name='%s'"
2319                                        " config_methods=0x%x"
2320                                        " dev_capab=0x%x"
2321                                        " group_capab=0x%x"
2322                                        " adv_id=%x asp_svc=%s%s",
2323                                        MAC2STR(addr),
2324                                        MAC2STR(info->p2p_device_addr),
2325                                        wps_dev_type_bin2str(
2326                                                info->pri_dev_type,
2327                                                devtype, sizeof(devtype)),
2328                                        info->device_name, methods,
2329                                        info->dev_capab, info->group_capab,
2330                                        id, str,
2331                                        info->vendor_elems ?
2332                                        " vendor_elems=1" : "");
2333                 }
2334                 goto done;
2335         }
2336
2337         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2338                        " p2p_dev_addr=" MACSTR
2339                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2340                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2341                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2342                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2343                                             sizeof(devtype)),
2344                        info->device_name, info->config_methods,
2345                        info->dev_capab, info->group_capab,
2346                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2347                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2348                        info->vendor_elems ? " vendor_elems=1" : "",
2349                        new_device);
2350
2351 done:
2352         os_free(wfd_dev_info_hex);
2353 #endif /* CONFIG_NO_STDOUT_DEBUG */
2354
2355         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2356 }
2357
2358
2359 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2360 {
2361         struct wpa_supplicant *wpa_s = ctx;
2362
2363         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2364                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2365
2366         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2367 }
2368
2369
2370 static void wpas_find_stopped(void *ctx)
2371 {
2372         struct wpa_supplicant *wpa_s = ctx;
2373         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2374         wpas_notify_p2p_find_stopped(wpa_s);
2375 }
2376
2377
2378 struct wpas_p2p_listen_work {
2379         unsigned int freq;
2380         unsigned int duration;
2381         struct wpabuf *probe_resp_ie;
2382 };
2383
2384
2385 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2386 {
2387         if (lwork == NULL)
2388                 return;
2389         wpabuf_free(lwork->probe_resp_ie);
2390         os_free(lwork);
2391 }
2392
2393
2394 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2395 {
2396         struct wpas_p2p_listen_work *lwork;
2397
2398         if (!wpa_s->p2p_listen_work)
2399                 return;
2400
2401         lwork = wpa_s->p2p_listen_work->ctx;
2402         wpas_p2p_listen_work_free(lwork);
2403         radio_work_done(wpa_s->p2p_listen_work);
2404         wpa_s->p2p_listen_work = NULL;
2405 }
2406
2407
2408 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2409 {
2410         struct wpa_supplicant *wpa_s = work->wpa_s;
2411         struct wpas_p2p_listen_work *lwork = work->ctx;
2412         unsigned int duration;
2413
2414         if (deinit) {
2415                 if (work->started) {
2416                         wpa_s->p2p_listen_work = NULL;
2417                         wpas_stop_listen(wpa_s);
2418                 }
2419                 wpas_p2p_listen_work_free(lwork);
2420                 return;
2421         }
2422
2423         wpa_s->p2p_listen_work = work;
2424
2425         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2426
2427         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2428                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2429                            "report received Probe Request frames");
2430                 wpas_p2p_listen_work_done(wpa_s);
2431                 return;
2432         }
2433
2434         wpa_s->pending_listen_freq = lwork->freq;
2435         wpa_s->pending_listen_duration = lwork->duration;
2436
2437         duration = lwork->duration;
2438 #ifdef CONFIG_TESTING_OPTIONS
2439         if (wpa_s->extra_roc_dur) {
2440                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2441                            duration, duration + wpa_s->extra_roc_dur);
2442                 duration += wpa_s->extra_roc_dur;
2443         }
2444 #endif /* CONFIG_TESTING_OPTIONS */
2445
2446         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2447                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2448                            "to remain on channel (%u MHz) for Listen "
2449                            "state", lwork->freq);
2450                 wpas_p2p_listen_work_done(wpa_s);
2451                 wpa_s->pending_listen_freq = 0;
2452                 return;
2453         }
2454         wpa_s->off_channel_freq = 0;
2455         wpa_s->roc_waiting_drv_freq = lwork->freq;
2456 }
2457
2458
2459 static int wpas_start_listen(void *ctx, unsigned int freq,
2460                              unsigned int duration,
2461                              const struct wpabuf *probe_resp_ie)
2462 {
2463         struct wpa_supplicant *wpa_s = ctx;
2464         struct wpas_p2p_listen_work *lwork;
2465
2466         if (wpa_s->p2p_listen_work) {
2467                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2468                 return -1;
2469         }
2470
2471         lwork = os_zalloc(sizeof(*lwork));
2472         if (lwork == NULL)
2473                 return -1;
2474         lwork->freq = freq;
2475         lwork->duration = duration;
2476         if (probe_resp_ie) {
2477                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2478                 if (lwork->probe_resp_ie == NULL) {
2479                         wpas_p2p_listen_work_free(lwork);
2480                         return -1;
2481                 }
2482         }
2483
2484         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2485                            lwork) < 0) {
2486                 wpas_p2p_listen_work_free(lwork);
2487                 return -1;
2488         }
2489
2490         return 0;
2491 }
2492
2493
2494 static void wpas_stop_listen(void *ctx)
2495 {
2496         struct wpa_supplicant *wpa_s = ctx;
2497         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2498                 wpa_drv_cancel_remain_on_channel(wpa_s);
2499                 wpa_s->off_channel_freq = 0;
2500                 wpa_s->roc_waiting_drv_freq = 0;
2501         }
2502         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2503
2504         /*
2505          * Don't cancel Probe Request RX reporting for a connected P2P Client
2506          * handling Probe Request frames.
2507          */
2508         if (!wpa_s->p2p_cli_probe)
2509                 wpa_drv_probe_req_report(wpa_s, 0);
2510
2511         wpas_p2p_listen_work_done(wpa_s);
2512 }
2513
2514
2515 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2516                                 unsigned int freq)
2517 {
2518         struct wpa_supplicant *wpa_s = ctx;
2519         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2520                                  freq);
2521 }
2522
2523
2524 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2525                                          const u8 *peer, const char *params,
2526                                          unsigned int generated_pin)
2527 {
2528         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2529                        " %08d%s", MAC2STR(peer), generated_pin, params);
2530 }
2531
2532
2533 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2534                                         const u8 *peer, const char *params)
2535 {
2536         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2537                        "%s", MAC2STR(peer), params);
2538 }
2539
2540
2541 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2542                                const u8 *dev_addr, const u8 *pri_dev_type,
2543                                const char *dev_name, u16 supp_config_methods,
2544                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2545                                size_t group_id_len)
2546 {
2547         struct wpa_supplicant *wpa_s = ctx;
2548         char devtype[WPS_DEV_TYPE_BUFSIZE];
2549         char params[300];
2550         u8 empty_dev_type[8];
2551         unsigned int generated_pin = 0;
2552         struct wpa_supplicant *group = NULL;
2553         int res;
2554
2555         if (group_id) {
2556                 for (group = wpa_s->global->ifaces; group; group = group->next)
2557                 {
2558                         struct wpa_ssid *s = group->current_ssid;
2559                         if (s != NULL &&
2560                             s->mode == WPAS_MODE_P2P_GO &&
2561                             group_id_len - ETH_ALEN == s->ssid_len &&
2562                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2563                                       s->ssid_len) == 0)
2564                                 break;
2565                 }
2566         }
2567
2568         if (pri_dev_type == NULL) {
2569                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2570                 pri_dev_type = empty_dev_type;
2571         }
2572         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2573                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2574                           "dev_capab=0x%x group_capab=0x%x%s%s",
2575                           MAC2STR(dev_addr),
2576                           wps_dev_type_bin2str(pri_dev_type, devtype,
2577                                                sizeof(devtype)),
2578                           dev_name, supp_config_methods, dev_capab, group_capab,
2579                           group ? " group=" : "",
2580                           group ? group->ifname : "");
2581         if (os_snprintf_error(sizeof(params), res))
2582                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2583         params[sizeof(params) - 1] = '\0';
2584
2585         if (config_methods & WPS_CONFIG_DISPLAY) {
2586                 generated_pin = wps_generate_pin();
2587                 wpas_prov_disc_local_display(wpa_s, peer, params,
2588                                              generated_pin);
2589         } else if (config_methods & WPS_CONFIG_KEYPAD)
2590                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2591         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2592                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2593                                MACSTR "%s", MAC2STR(peer), params);
2594
2595         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2596                                             P2P_PROV_DISC_SUCCESS,
2597                                             config_methods, generated_pin);
2598 }
2599
2600
2601 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2602 {
2603         struct wpa_supplicant *wpa_s = ctx;
2604         unsigned int generated_pin = 0;
2605         char params[20];
2606
2607         if (wpa_s->pending_pd_before_join &&
2608             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2609              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2610                 wpa_s->pending_pd_before_join = 0;
2611                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2612                            "join-existing-group operation");
2613                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2614                 return;
2615         }
2616
2617         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2618             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2619                 int res;
2620
2621                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2622                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2623                 if (os_snprintf_error(sizeof(params), res))
2624                         params[sizeof(params) - 1] = '\0';
2625         } else
2626                 params[0] = '\0';
2627
2628         if (config_methods & WPS_CONFIG_DISPLAY)
2629                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2630         else if (config_methods & WPS_CONFIG_KEYPAD) {
2631                 generated_pin = wps_generate_pin();
2632                 wpas_prov_disc_local_display(wpa_s, peer, params,
2633                                              generated_pin);
2634         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2635                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2636                                MACSTR "%s", MAC2STR(peer), params);
2637
2638         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2639                                             P2P_PROV_DISC_SUCCESS,
2640                                             config_methods, generated_pin);
2641 }
2642
2643
2644 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2645                                 enum p2p_prov_disc_status status,
2646                                 u32 adv_id, const u8 *adv_mac,
2647                                 const char *deferred_session_resp)
2648 {
2649         struct wpa_supplicant *wpa_s = ctx;
2650
2651         if (wpa_s->p2p_fallback_to_go_neg) {
2652                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2653                         "failed - fall back to GO Negotiation");
2654                 wpa_msg_global(wpa_s->parent, MSG_INFO,
2655                                P2P_EVENT_FALLBACK_TO_GO_NEG
2656                                "reason=PD-failed");
2657                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2658                 return;
2659         }
2660
2661         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2662                 wpa_s->pending_pd_before_join = 0;
2663                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2664                            "join-existing-group operation (no ACK for PD "
2665                            "Req attempts)");
2666                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2667                 return;
2668         }
2669
2670         if (adv_id && adv_mac && deferred_session_resp) {
2671                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2672                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2673                                " deferred_session_resp='%s'",
2674                                MAC2STR(peer), status, adv_id,
2675                                deferred_session_resp);
2676         } else if (adv_id && adv_mac) {
2677                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2678                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2679                                MAC2STR(peer), status, adv_id);
2680         } else {
2681                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2682                                " p2p_dev_addr=" MACSTR " status=%d",
2683                                MAC2STR(peer), status);
2684         }
2685
2686         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2687                                             status, 0, 0);
2688 }
2689
2690
2691 static int freq_included(struct wpa_supplicant *wpa_s,
2692                          const struct p2p_channels *channels,
2693                          unsigned int freq)
2694 {
2695         if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2696             wpas_p2p_go_is_peer_freq(wpa_s, freq))
2697                 return 1;
2698         return 0;
2699 }
2700
2701
2702 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2703 {
2704         unsigned int num = P2P_MAX_CHANNELS;
2705         int *common_freqs;
2706         int ret;
2707
2708         p2p_go_dump_common_freqs(wpa_s);
2709         common_freqs = os_calloc(num, sizeof(int));
2710         if (!common_freqs)
2711                 return;
2712
2713         ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2714         if (ret < 0) {
2715                 wpa_dbg(wpa_s, MSG_DEBUG,
2716                         "P2P: Failed to get group common freqs");
2717                 os_free(common_freqs);
2718                 return;
2719         }
2720
2721         os_free(wpa_s->p2p_group_common_freqs);
2722         wpa_s->p2p_group_common_freqs = common_freqs;
2723         wpa_s->p2p_group_common_freqs_num = num;
2724         p2p_go_dump_common_freqs(wpa_s);
2725 }
2726
2727
2728 /*
2729  * Check if the given frequency is one of the possible operating frequencies
2730  * set after the completion of the GO Negotiation.
2731  */
2732 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2733 {
2734         unsigned int i;
2735
2736         p2p_go_dump_common_freqs(wpa_s);
2737
2738         /* assume no restrictions */
2739         if (!wpa_s->p2p_group_common_freqs_num)
2740                 return 1;
2741
2742         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2743                 if (wpa_s->p2p_group_common_freqs[i] == freq)
2744                         return 1;
2745         }
2746         return 0;
2747 }
2748
2749
2750 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2751                                struct sta_info *sta, void *ctx)
2752 {
2753         int *ecsa_support = ctx;
2754
2755         *ecsa_support &= sta->ecsa_supported;
2756
2757         return 0;
2758 }
2759
2760
2761 /* Check if all the peers support eCSA */
2762 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2763 {
2764         int ecsa_support = 1;
2765
2766         ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2767                         &ecsa_support);
2768
2769         return ecsa_support;
2770 }
2771
2772
2773 /**
2774  * Pick the best frequency to use from all the currently used frequencies.
2775  */
2776 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2777                                         struct wpa_used_freq_data *freqs,
2778                                         unsigned int num)
2779 {
2780         unsigned int i, c;
2781
2782         /* find a candidate freq that is supported by P2P */
2783         for (c = 0; c < num; c++)
2784                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2785                         break;
2786
2787         if (c == num)
2788                 return 0;
2789
2790         /* once we have a candidate, try to find a 'better' one */
2791         for (i = c + 1; i < num; i++) {
2792                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2793                         continue;
2794
2795                 /*
2796                  * 1. Infrastructure station interfaces have higher preference.
2797                  * 2. P2P Clients have higher preference.
2798                  * 3. All others.
2799                  */
2800                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2801                         c = i;
2802                         break;
2803                 }
2804
2805                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2806                         c = i;
2807         }
2808         return freqs[c].freq;
2809 }
2810
2811
2812 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2813                                   const u8 *go_dev_addr, const u8 *ssid,
2814                                   size_t ssid_len, int *go, u8 *group_bssid,
2815                                   int *force_freq, int persistent_group,
2816                                   const struct p2p_channels *channels,
2817                                   int dev_pw_id)
2818 {
2819         struct wpa_supplicant *wpa_s = ctx;
2820         struct wpa_ssid *s;
2821         struct wpa_used_freq_data *freqs;
2822         struct wpa_supplicant *grp;
2823         int best_freq;
2824
2825         if (!persistent_group) {
2826                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2827                            " to join an active group (SSID: %s)",
2828                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2829                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2830                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2831                      == 0 ||
2832                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2833                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2834                                    "authorized invitation");
2835                         goto accept_inv;
2836                 }
2837
2838 #ifdef CONFIG_WPS_NFC
2839                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2840                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2841                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2842                         wpa_s->p2p_wps_method = WPS_NFC;
2843                         wpa_s->pending_join_wps_method = WPS_NFC;
2844                         os_memcpy(wpa_s->pending_join_dev_addr,
2845                                   go_dev_addr, ETH_ALEN);
2846                         os_memcpy(wpa_s->pending_join_iface_addr,
2847                                   bssid, ETH_ALEN);
2848                         goto accept_inv;
2849                 }
2850 #endif /* CONFIG_WPS_NFC */
2851
2852                 /*
2853                  * Do not accept the invitation automatically; notify user and
2854                  * request approval.
2855                  */
2856                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2857         }
2858
2859         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2860         if (grp) {
2861                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2862                            "running persistent group");
2863                 if (*go)
2864                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2865                 goto accept_inv;
2866         }
2867
2868         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2869             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2870                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2871                            "invitation to re-invoke a persistent group");
2872                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2873         } else if (!wpa_s->conf->persistent_reconnect)
2874                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2875
2876         for (s = wpa_s->conf->ssid; s; s = s->next) {
2877                 if (s->disabled == 2 &&
2878                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2879                     s->ssid_len == ssid_len &&
2880                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2881                         break;
2882         }
2883
2884         if (!s) {
2885                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2886                            " requested reinvocation of an unknown group",
2887                            MAC2STR(sa));
2888                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2889         }
2890
2891         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2892                 *go = 1;
2893                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2894                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2895                                    "interface is already in use - reject "
2896                                    "invitation");
2897                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2898                 }
2899                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2900         } else if (s->mode == WPAS_MODE_P2P_GO) {
2901                 *go = 1;
2902                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2903                 {
2904                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2905                                    "interface address for the group");
2906                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2907                 }
2908                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2909                           ETH_ALEN);
2910         }
2911
2912 accept_inv:
2913         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2914
2915         best_freq = 0;
2916         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2917                           sizeof(struct wpa_used_freq_data));
2918         if (freqs) {
2919                 int num_channels = wpa_s->num_multichan_concurrent;
2920                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2921                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2922                 os_free(freqs);
2923         }
2924
2925         /* Get one of the frequencies currently in use */
2926         if (best_freq > 0) {
2927                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2928                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2929
2930                 if (wpa_s->num_multichan_concurrent < 2 ||
2931                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2932                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2933                         *force_freq = best_freq;
2934                 }
2935         }
2936
2937         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2938             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2939                 if (*go == 0) {
2940                         /* We are the client */
2941                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2942                                    "running a GO but we are capable of MCC, "
2943                                    "figure out the best channel to use");
2944                         *force_freq = 0;
2945                 } else if (!freq_included(wpa_s, channels, *force_freq)) {
2946                         /* We are the GO, and *force_freq is not in the
2947                          * intersection */
2948                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2949                                    "in intersection but we are capable of MCC, "
2950                                    "figure out the best channel to use",
2951                                    *force_freq);
2952                         *force_freq = 0;
2953                 }
2954         }
2955
2956         return P2P_SC_SUCCESS;
2957 }
2958
2959
2960 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2961                                      const u8 *ssid, size_t ssid_len,
2962                                      const u8 *go_dev_addr, u8 status,
2963                                      int op_freq)
2964 {
2965         struct wpa_supplicant *wpa_s = ctx;
2966         struct wpa_ssid *s;
2967
2968         for (s = wpa_s->conf->ssid; s; s = s->next) {
2969                 if (s->disabled == 2 &&
2970                     s->ssid_len == ssid_len &&
2971                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2972                         break;
2973         }
2974
2975         if (status == P2P_SC_SUCCESS) {
2976                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2977                            " was accepted; op_freq=%d MHz, SSID=%s",
2978                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
2979                 if (s) {
2980                         int go = s->mode == WPAS_MODE_P2P_GO;
2981                         wpas_p2p_group_add_persistent(
2982                                 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL,
2983                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
2984                                 1);
2985                 } else if (bssid) {
2986                         wpa_s->user_initiated_pd = 0;
2987                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2988                                       wpa_s->p2p_wps_method, 0, op_freq,
2989                                       ssid, ssid_len);
2990                 }
2991                 return;
2992         }
2993
2994         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2995                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2996                            " was rejected (status %u)", MAC2STR(sa), status);
2997                 return;
2998         }
2999
3000         if (!s) {
3001                 if (bssid) {
3002                         wpa_msg_global(wpa_s, MSG_INFO,
3003                                        P2P_EVENT_INVITATION_RECEIVED
3004                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3005                                        " bssid=" MACSTR " unknown-network",
3006                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3007                                        MAC2STR(bssid));
3008                 } else {
3009                         wpa_msg_global(wpa_s, MSG_INFO,
3010                                        P2P_EVENT_INVITATION_RECEIVED
3011                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3012                                        " unknown-network",
3013                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3014                 }
3015                 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3016                                                     bssid, 0, op_freq);
3017                 return;
3018         }
3019
3020         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3021                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3022                                "sa=" MACSTR " persistent=%d freq=%d",
3023                                MAC2STR(sa), s->id, op_freq);
3024         } else {
3025                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3026                                "sa=" MACSTR " persistent=%d",
3027                                MAC2STR(sa), s->id);
3028         }
3029         wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3030                                             s->id, op_freq);
3031 }
3032
3033
3034 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3035                                         struct wpa_ssid *ssid,
3036                                         const u8 *peer, int inv)
3037 {
3038         size_t i;
3039         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3040
3041         if (ssid == NULL)
3042                 return;
3043
3044         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3045                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3046                               ETH_ALEN) == 0)
3047                         break;
3048         }
3049         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3050                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3051                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3052                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3053                                    "due to invitation result", ssid->id);
3054                         wpas_notify_network_removed(wpa_s, ssid);
3055                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3056                         return;
3057                 }
3058                 return; /* Peer not found in client list */
3059         }
3060
3061         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3062                    "group %d client list%s",
3063                    MAC2STR(peer), ssid->id,
3064                    inv ? " due to invitation result" : "");
3065         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3066                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3067                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3068         ssid->num_p2p_clients--;
3069         if (p2p_wpa_s->conf->update_config &&
3070             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3071                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3072 }
3073
3074
3075 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3076                                           const u8 *peer)
3077 {
3078         struct wpa_ssid *ssid;
3079
3080         wpa_s = wpa_s->global->p2p_invite_group;
3081         if (wpa_s == NULL)
3082                 return; /* No known invitation group */
3083         ssid = wpa_s->current_ssid;
3084         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3085             !ssid->p2p_persistent_group)
3086                 return; /* Not operating as a GO in persistent group */
3087         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3088                                        ssid->ssid, ssid->ssid_len);
3089         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3090 }
3091
3092
3093 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3094                                    const struct p2p_channels *channels,
3095                                    const u8 *peer, int neg_freq,
3096                                    int peer_oper_freq)
3097 {
3098         struct wpa_supplicant *wpa_s = ctx;
3099         struct wpa_ssid *ssid;
3100         int freq;
3101
3102         if (bssid) {
3103                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3104                                "status=%d " MACSTR,
3105                                status, MAC2STR(bssid));
3106         } else {
3107                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3108                                "status=%d ", status);
3109         }
3110         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3111
3112         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3113                    status, MAC2STR(peer));
3114         if (wpa_s->pending_invite_ssid_id == -1) {
3115                 struct wpa_supplicant *group_if =
3116                         wpa_s->global->p2p_invite_group;
3117
3118                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3119                         wpas_remove_persistent_client(wpa_s, peer);
3120
3121                 /*
3122                  * Invitation to an active group. If this is successful and we
3123                  * are the GO, set the client wait to postpone some concurrent
3124                  * operations and to allow provisioning and connection to happen
3125                  * more quickly.
3126                  */
3127                 if (status == P2P_SC_SUCCESS &&
3128                     group_if && group_if->current_ssid &&
3129                     group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3130                         os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3131 #ifdef CONFIG_TESTING_OPTIONS
3132                         if (group_if->p2p_go_csa_on_inv) {
3133                                 wpa_printf(MSG_DEBUG,
3134                                            "Testing: force P2P GO CSA after invitation");
3135                                 eloop_cancel_timeout(
3136                                         wpas_p2p_reconsider_moving_go,
3137                                         wpa_s, NULL);
3138                                 eloop_register_timeout(
3139                                         0, 50000,
3140                                         wpas_p2p_reconsider_moving_go,
3141                                         wpa_s, NULL);
3142                         }
3143 #endif /* CONFIG_TESTING_OPTIONS */
3144                 }
3145                 return;
3146         }
3147
3148         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3149                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3150                            "invitation exchange to indicate readiness for "
3151                            "re-invocation");
3152         }
3153
3154         if (status != P2P_SC_SUCCESS) {
3155                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3156                         ssid = wpa_config_get_network(
3157                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3158                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3159                 }
3160                 wpas_p2p_remove_pending_group_interface(wpa_s);
3161                 return;
3162         }
3163
3164         ssid = wpa_config_get_network(wpa_s->conf,
3165                                       wpa_s->pending_invite_ssid_id);
3166         if (ssid == NULL) {
3167                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3168                            "data matching with invitation");
3169                 return;
3170         }
3171
3172         /*
3173          * The peer could have missed our ctrl::ack frame for Invitation
3174          * Response and continue retransmitting the frame. To reduce the
3175          * likelihood of the peer not getting successful TX status for the
3176          * Invitation Response frame, wait a short time here before starting
3177          * the persistent group so that we will remain on the current channel to
3178          * acknowledge any possible retransmission from the peer.
3179          */
3180         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3181                 "starting persistent group");
3182         os_sleep(0, 50000);
3183
3184         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3185             freq_included(wpa_s, channels, neg_freq))
3186                 freq = neg_freq;
3187         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3188                  freq_included(wpa_s, channels, peer_oper_freq))
3189                 freq = peer_oper_freq;
3190         else
3191                 freq = 0;
3192
3193         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3194                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3195         wpas_p2p_group_add_persistent(wpa_s, ssid,
3196                                       ssid->mode == WPAS_MODE_P2P_GO,
3197                                       wpa_s->p2p_persistent_go_freq,
3198                                       freq,
3199                                       wpa_s->p2p_go_vht_center_freq2,
3200                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3201                                       wpa_s->p2p_go_max_oper_chwidth,
3202                                       channels,
3203                                       ssid->mode == WPAS_MODE_P2P_GO ?
3204                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3205                                       0, 1);
3206 }
3207
3208
3209 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3210                                     unsigned int freq)
3211 {
3212         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3213                 return 1;
3214         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3215 }
3216
3217
3218 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3219 {
3220         reg->channel[reg->channels] = chan;
3221         reg->channels++;
3222 }
3223
3224
3225 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3226                                      struct p2p_channels *chan,
3227                                      struct p2p_channels *cli_chan)
3228 {
3229         int i, cla = 0;
3230
3231         wpa_s->global->p2p_24ghz_social_channels = 1;
3232
3233         os_memset(cli_chan, 0, sizeof(*cli_chan));
3234
3235         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3236                    "band");
3237
3238         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3239         chan->reg_class[cla].reg_class = 81;
3240         chan->reg_class[cla].channels = 0;
3241         for (i = 0; i < 11; i++) {
3242                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3243                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3244         }
3245         if (chan->reg_class[cla].channels)
3246                 cla++;
3247
3248         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3249                    "band");
3250
3251         /* Operating class 115 - 5 GHz, channels 36-48 */
3252         chan->reg_class[cla].reg_class = 115;
3253         chan->reg_class[cla].channels = 0;
3254         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3255                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3256         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3257                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3258         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3259                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3260         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3261                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3262         if (chan->reg_class[cla].channels)
3263                 cla++;
3264
3265         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3266                    "band");
3267
3268         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3269         chan->reg_class[cla].reg_class = 124;
3270         chan->reg_class[cla].channels = 0;
3271         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3272                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3273         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3274                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3275         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3276                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3277         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3278                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3279         if (chan->reg_class[cla].channels)
3280                 cla++;
3281
3282         chan->reg_classes = cla;
3283         return 0;
3284 }
3285
3286
3287 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3288                                           u16 num_modes,
3289                                           enum hostapd_hw_mode mode)
3290 {
3291         u16 i;
3292
3293         for (i = 0; i < num_modes; i++) {
3294                 if (modes[i].mode == mode)
3295                         return &modes[i];
3296         }
3297
3298         return NULL;
3299 }
3300
3301
3302 enum chan_allowed {
3303         NOT_ALLOWED, NO_IR, ALLOWED
3304 };
3305
3306 static int has_channel(struct wpa_global *global,
3307                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3308 {
3309         int i;
3310         unsigned int freq;
3311
3312         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3313                 chan * 5;
3314         if (wpas_p2p_disallowed_freq(global, freq))
3315                 return NOT_ALLOWED;
3316
3317         for (i = 0; i < mode->num_channels; i++) {
3318                 if (mode->channels[i].chan == chan) {
3319                         if (flags)
3320                                 *flags = mode->channels[i].flag;
3321                         if (mode->channels[i].flag &
3322                             (HOSTAPD_CHAN_DISABLED |
3323                              HOSTAPD_CHAN_RADAR))
3324                                 return NOT_ALLOWED;
3325                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3326                                 return NO_IR;
3327                         return ALLOWED;
3328                 }
3329         }
3330
3331         return NOT_ALLOWED;
3332 }
3333
3334
3335 struct p2p_oper_class_map {
3336         enum hostapd_hw_mode mode;
3337         u8 op_class;
3338         u8 min_chan;
3339         u8 max_chan;
3340         u8 inc;
3341         enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160, BW160, BW80P80 } bw;
3342 };
3343
3344 static const struct p2p_oper_class_map op_class[] = {
3345         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3346 #if 0 /* Do not enable HT40 on 2 GHz for now */
3347         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3348         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3349 #endif
3350         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3351         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3352         { HOSTAPD_MODE_IEEE80211A, 125, 149, 169, 4, BW20 },
3353         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3354         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3355         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3356         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3357
3358         /*
3359          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3360          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3361          * 80 MHz, but currently use the following definition for simplicity
3362          * (these center frequencies are not actual channels, which makes
3363          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3364          * removing invalid channels.
3365          */
3366         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3367         { HOSTAPD_MODE_IEEE80211A, 130, 36, 161, 4, BW80P80 },
3368         { HOSTAPD_MODE_IEEE80211A, 129, 50, 114, 16, BW160 },
3369         { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
3370         { -1, 0, 0, 0, 0, BW20 }
3371 };
3372
3373
3374 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3375                                      struct hostapd_hw_modes *mode,
3376                                      u8 channel)
3377 {
3378         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3379         unsigned int i;
3380
3381         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3382                 return 0;
3383
3384         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3385                 /*
3386                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3387                  * so the center channel is 6 channels away from the start/end.
3388                  */
3389                 if (channel >= center_channels[i] - 6 &&
3390                     channel <= center_channels[i] + 6)
3391                         return center_channels[i];
3392
3393         return 0;
3394 }
3395
3396
3397 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3398                                                struct hostapd_hw_modes *mode,
3399                                                u8 channel, u8 bw)
3400 {
3401         u8 center_chan;
3402         int i, flags;
3403         enum chan_allowed res, ret = ALLOWED;
3404
3405         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3406         if (!center_chan)
3407                 return NOT_ALLOWED;
3408         if (center_chan >= 58 && center_chan <= 138)
3409                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3410
3411         /* check all the channels are available */
3412         for (i = 0; i < 4; i++) {
3413                 int adj_chan = center_chan - 6 + i * 4;
3414
3415                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3416                 if (res == NOT_ALLOWED)
3417                         return NOT_ALLOWED;
3418                 if (res == NO_IR)
3419                         ret = NO_IR;
3420
3421                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3422                         return NOT_ALLOWED;
3423                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3424                         return NOT_ALLOWED;
3425                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3426                         return NOT_ALLOWED;
3427                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3428                         return NOT_ALLOWED;
3429         }
3430
3431         return ret;
3432 }
3433
3434
3435 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3436                                      struct hostapd_hw_modes *mode,
3437                                      u8 channel)
3438 {
3439         u8 center_channels[] = { 50, 114 };
3440         unsigned int i;
3441
3442         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3443                 return 0;
3444
3445         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3446                 /*
3447                  * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3448                  * so the center channel is 14 channels away from the start/end.
3449                  */
3450                 if (channel >= center_channels[i] - 14 &&
3451                     channel <= center_channels[i] + 14)
3452                         return center_channels[i];
3453
3454         return 0;
3455 }
3456
3457
3458 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3459                                                struct hostapd_hw_modes *mode,
3460                                                u8 channel, u8 bw)
3461 {
3462         u8 center_chan;
3463         int i, flags;
3464         enum chan_allowed res, ret = ALLOWED;
3465
3466         center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3467         if (!center_chan)
3468                 return NOT_ALLOWED;
3469         /* VHT 160 MHz uses DFS channels in most countries. */
3470
3471         /* Check all the channels are available */
3472         for (i = 0; i < 8; i++) {
3473                 int adj_chan = center_chan - 14 + i * 4;
3474
3475                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3476                 if (res == NOT_ALLOWED)
3477                         return NOT_ALLOWED;
3478
3479                 if (res == NO_IR)
3480                         ret = NO_IR;
3481
3482                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3483                         return NOT_ALLOWED;
3484                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3485                         return NOT_ALLOWED;
3486                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3487                         return NOT_ALLOWED;
3488                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3489                         return NOT_ALLOWED;
3490                 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3491                         return NOT_ALLOWED;
3492                 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3493                         return NOT_ALLOWED;
3494                 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3495                         return NOT_ALLOWED;
3496                 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3497                         return NOT_ALLOWED;
3498         }
3499
3500         return ret;
3501 }
3502
3503
3504 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3505                                                  struct hostapd_hw_modes *mode,
3506                                                  u8 channel, u8 bw)
3507 {
3508         int flag = 0;
3509         enum chan_allowed res, res2;
3510
3511         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3512         if (bw == BW40MINUS) {
3513                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3514                         return NOT_ALLOWED;
3515                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3516         } else if (bw == BW40PLUS) {
3517                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3518                         return NOT_ALLOWED;
3519                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3520         } else if (bw == BW80) {
3521                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3522         } else if (bw == BW160) {
3523                 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3524         }
3525
3526         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3527                 return NOT_ALLOWED;
3528         if (res == NO_IR || res2 == NO_IR)
3529                 return NO_IR;
3530         return res;
3531 }
3532
3533
3534 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3535                                    struct p2p_channels *chan,
3536                                    struct p2p_channels *cli_chan)
3537 {
3538         struct hostapd_hw_modes *mode;
3539         int cla, op, cli_cla;
3540
3541         if (wpa_s->hw.modes == NULL) {
3542                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3543                            "of all supported channels; assume dualband "
3544                            "support");
3545                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3546         }
3547
3548         cla = cli_cla = 0;
3549
3550         for (op = 0; op_class[op].op_class; op++) {
3551                 const struct p2p_oper_class_map *o = &op_class[op];
3552                 u8 ch;
3553                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3554
3555                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3556                 if (mode == NULL)
3557                         continue;
3558                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3559                         wpa_s->global->p2p_24ghz_social_channels = 1;
3560                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3561                         enum chan_allowed res;
3562                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3563                         if (res == ALLOWED) {
3564                                 if (reg == NULL) {
3565                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3566                                                    o->op_class);
3567                                         reg = &chan->reg_class[cla];
3568                                         cla++;
3569                                         reg->reg_class = o->op_class;
3570                                 }
3571                                 reg->channel[reg->channels] = ch;
3572                                 reg->channels++;
3573                         } else if (res == NO_IR &&
3574                                    wpa_s->conf->p2p_add_cli_chan) {
3575                                 if (cli_reg == NULL) {
3576                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3577                                                    o->op_class);
3578                                         cli_reg = &cli_chan->reg_class[cli_cla];
3579                                         cli_cla++;
3580                                         cli_reg->reg_class = o->op_class;
3581                                 }
3582                                 cli_reg->channel[cli_reg->channels] = ch;
3583                                 cli_reg->channels++;
3584                         }
3585                 }
3586                 if (reg) {
3587                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3588                                     reg->channel, reg->channels);
3589                 }
3590                 if (cli_reg) {
3591                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3592                                     cli_reg->channel, cli_reg->channels);
3593                 }
3594         }
3595
3596         chan->reg_classes = cla;
3597         cli_chan->reg_classes = cli_cla;
3598
3599         return 0;
3600 }
3601
3602
3603 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3604                            struct hostapd_hw_modes *mode, u8 channel)
3605 {
3606         int op;
3607         enum chan_allowed ret;
3608
3609         for (op = 0; op_class[op].op_class; op++) {
3610                 const struct p2p_oper_class_map *o = &op_class[op];
3611                 u8 ch;
3612
3613                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3614                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3615                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3616                             ch != channel)
3617                                 continue;
3618                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3619                         if (ret == ALLOWED)
3620                                 return (o->bw == BW40MINUS) ? -1 : 1;
3621                 }
3622         }
3623         return 0;
3624 }
3625
3626
3627 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3628                               struct hostapd_hw_modes *mode, u8 channel)
3629 {
3630         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3631                 return 0;
3632
3633         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3634 }
3635
3636
3637 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3638                                struct hostapd_hw_modes *mode, u8 channel)
3639 {
3640         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3641                 return 0;
3642         return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3643 }
3644
3645
3646 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3647                         size_t buf_len)
3648 {
3649         struct wpa_supplicant *wpa_s = ctx;
3650
3651         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3652                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3653                         break;
3654         }
3655         if (wpa_s == NULL)
3656                 return -1;
3657
3658         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3659 }
3660
3661
3662 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3663                                               const u8 *ssid, size_t ssid_len)
3664 {
3665         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3666                 struct wpa_ssid *s = wpa_s->current_ssid;
3667                 if (s == NULL)
3668                         continue;
3669                 if (s->mode != WPAS_MODE_P2P_GO &&
3670                     s->mode != WPAS_MODE_AP &&
3671                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3672                         continue;
3673                 if (s->ssid_len != ssid_len ||
3674                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3675                         continue;
3676                 return wpa_s;
3677         }
3678
3679         return NULL;
3680
3681 }
3682
3683
3684 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3685                                                   const u8 *peer_dev_addr)
3686 {
3687         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3688                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3689                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3690                         continue;
3691                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3692                         return wpa_s;
3693         }
3694
3695         return NULL;
3696 }
3697
3698
3699 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3700 {
3701         struct wpa_supplicant *wpa_s = ctx;
3702
3703         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3704 }
3705
3706
3707 static int wpas_is_concurrent_session_active(void *ctx)
3708 {
3709         struct wpa_supplicant *wpa_s = ctx;
3710         struct wpa_supplicant *ifs;
3711
3712         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3713                 if (ifs == wpa_s)
3714                         continue;
3715                 if (ifs->wpa_state > WPA_ASSOCIATED)
3716                         return 1;
3717         }
3718         return 0;
3719 }
3720
3721
3722 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3723 {
3724         struct wpa_supplicant *wpa_s = ctx;
3725         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3726 }
3727
3728
3729 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3730                                   const char *conf_p2p_dev)
3731 {
3732         struct wpa_interface iface;
3733         struct wpa_supplicant *p2pdev_wpa_s;
3734         char ifname[100];
3735         char force_name[100];
3736         int ret;
3737
3738         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3739                           wpa_s->ifname);
3740         if (os_snprintf_error(sizeof(ifname), ret))
3741                 return -1;
3742         force_name[0] = '\0';
3743         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3744         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3745                              force_name, wpa_s->pending_interface_addr, NULL);
3746         if (ret < 0) {
3747                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3748                 return ret;
3749         }
3750         os_strlcpy(wpa_s->pending_interface_name, ifname,
3751                    sizeof(wpa_s->pending_interface_name));
3752
3753         os_memset(&iface, 0, sizeof(iface));
3754         iface.p2p_mgmt = 1;
3755         iface.ifname = wpa_s->pending_interface_name;
3756         iface.driver = wpa_s->driver->name;
3757         iface.driver_param = wpa_s->conf->driver_param;
3758
3759         /*
3760          * If a P2P Device configuration file was given, use it as the interface
3761          * configuration file (instead of using parent's configuration file.
3762          */
3763         if (conf_p2p_dev) {
3764                 iface.confname = conf_p2p_dev;
3765                 iface.ctrl_interface = NULL;
3766         } else {
3767                 iface.confname = wpa_s->confname;
3768                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3769         }
3770
3771         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3772         if (!p2pdev_wpa_s) {
3773                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3774                 return -1;
3775         }
3776
3777         wpa_s->pending_interface_name[0] = '\0';
3778         return 0;
3779 }
3780
3781
3782 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3783                                const u8 *noa, size_t noa_len)
3784 {
3785         struct wpa_supplicant *wpa_s, *intf = ctx;
3786         char hex[100];
3787
3788         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3789                 if (wpa_s->waiting_presence_resp)
3790                         break;
3791         }
3792         if (!wpa_s) {
3793                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3794                 return;
3795         }
3796         wpa_s->waiting_presence_resp = 0;
3797
3798         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3799         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3800                 " status=%u noa=%s", MAC2STR(src), status, hex);
3801 }
3802
3803
3804 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3805                                      size_t ssid_len, u8 *go_dev_addr,
3806                                      u8 *ret_ssid, size_t *ret_ssid_len,
3807                                      u8 *intended_iface_addr)
3808 {
3809         struct wpa_supplicant *wpa_s = ctx;
3810         struct wpa_ssid *s;
3811
3812         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3813         if (s) {
3814                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3815                 *ret_ssid_len = s->ssid_len;
3816                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3817
3818                 if (s->mode != WPAS_MODE_P2P_GO) {
3819                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3820                 } else if (wpas_p2p_create_iface(wpa_s)) {
3821                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3822                                 return 0;
3823
3824                         os_memcpy(intended_iface_addr,
3825                                   wpa_s->pending_interface_addr, ETH_ALEN);
3826                 } else {
3827                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3828                                   ETH_ALEN);
3829                 }
3830                 return 1;
3831         }
3832
3833         return 0;
3834 }
3835
3836
3837 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3838                             u8 *ssid, size_t *ssid_len, int *group_iface,
3839                             unsigned int *freq)
3840 {
3841         struct wpa_supplicant *wpa_s = ctx;
3842         struct wpa_supplicant *go;
3843         struct wpa_ssid *s;
3844
3845         /*
3846          * group_iface will be set to 1 only if a dedicated interface for P2P
3847          * role is required. First, we try to reuse an active GO. However,
3848          * if it is not present, we will try to reactivate an existing
3849          * persistent group and set group_iface to 1, so the caller will know
3850          * that the pending interface should be used.
3851          */
3852         *group_iface = 0;
3853
3854         if (freq)
3855                 *freq = 0;
3856
3857         go = wpas_p2p_get_go_group(wpa_s);
3858         if (!go) {
3859                 s = wpas_p2p_get_persistent_go(wpa_s);
3860                 *group_iface = wpas_p2p_create_iface(wpa_s);
3861                 if (s)
3862                         os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3863                 else
3864                         return 0;
3865         } else {
3866                 s = go->current_ssid;
3867                 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3868                 if (freq)
3869                         *freq = go->assoc_freq;
3870         }
3871
3872         os_memcpy(ssid, s->ssid, s->ssid_len);
3873         *ssid_len = s->ssid_len;
3874
3875         return 1;
3876 }
3877
3878
3879 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3880                                     const u8 *ssid, size_t ssid_len)
3881 {
3882         struct wpa_supplicant *wpa_s = ctx;
3883         struct wpa_ssid *s;
3884         int save_config = 0;
3885         size_t i;
3886
3887         /* Start with our first choice of Persistent Groups */
3888         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3889                 if (go && ssid && ssid_len &&
3890                     s->ssid_len == ssid_len &&
3891                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3892                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3893                         break;
3894
3895                 /* Remove stale persistent group */
3896                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3897                         wpa_config_remove_network(wpa_s->conf, s->id);
3898                         save_config = 1;
3899                         continue;
3900                 }
3901
3902                 for (i = 0; i < s->num_p2p_clients; i++) {
3903                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3904                                       peer, ETH_ALEN) != 0)
3905                                 continue;
3906
3907                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3908                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3909                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3910                         break;
3911                 }
3912                 s->num_p2p_clients--;
3913                 save_config = 1;
3914         }
3915
3916         if (save_config)
3917                 p2p_config_write(wpa_s);
3918
3919         /* Return TRUE if valid SSID remains */
3920         return s != NULL;
3921 }
3922
3923
3924 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3925                                        const u8 *feat_cap, size_t feat_cap_len)
3926 {
3927         static const char pref[] = " feature_cap=";
3928         int ret;
3929
3930         buf[0] = '\0';
3931
3932         /*
3933          * We expect a feature capability to contain at least one byte to be
3934          * reported. The string buffer provided by the caller function is
3935          * expected to be big enough to contain all bytes of the attribute for
3936          * known specifications. This function truncates the reported bytes if
3937          * the feature capability data exceeds the string buffer size.
3938          */
3939         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3940                 return;
3941
3942         os_memcpy(buf, pref, sizeof(pref));
3943         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3944                                buf_len - sizeof(pref) + 1,
3945                                feat_cap, feat_cap_len);
3946
3947         if (ret != (2 * (int) feat_cap_len))
3948                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3949 }
3950
3951
3952 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3953                                     const u8 *adv_mac, const u8 *ses_mac,
3954                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3955                                     u8 conncap, int passwd_id,
3956                                     const u8 *persist_ssid,
3957                                     size_t persist_ssid_size, int response_done,
3958                                     int prov_start, const char *session_info,
3959                                     const u8 *feat_cap, size_t feat_cap_len,
3960                                     unsigned int freq)
3961 {
3962         struct wpa_supplicant *wpa_s = ctx;
3963         u8 mac[ETH_ALEN];
3964         struct wpa_ssid *persistent_go, *stale, *s = NULL;
3965         int save_config = 0;
3966         struct wpa_supplicant *go_wpa_s;
3967         char feat_cap_str[256];
3968
3969         if (!dev)
3970                 return;
3971
3972         os_memset(mac, 0, ETH_ALEN);
3973         if (!adv_mac)
3974                 adv_mac = mac;
3975         if (!ses_mac)
3976                 ses_mac = mac;
3977         if (!grp_mac)
3978                 grp_mac = mac;
3979
3980         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3981                                    feat_cap, feat_cap_len);
3982
3983         if (prov_start) {
3984                 if (session_info == NULL) {
3985                         wpa_msg_global(wpa_s, MSG_INFO,
3986                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3987                                        " adv_id=%x conncap=%x"
3988                                        " adv_mac=" MACSTR
3989                                        " session=%x mac=" MACSTR
3990                                        " dev_passwd_id=%d%s",
3991                                        MAC2STR(dev), adv_id, conncap,
3992                                        MAC2STR(adv_mac),
3993                                        ses_id, MAC2STR(ses_mac),
3994                                        passwd_id, feat_cap_str);
3995                 } else {
3996                         wpa_msg_global(wpa_s, MSG_INFO,
3997                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3998                                        " adv_id=%x conncap=%x"
3999                                        " adv_mac=" MACSTR
4000                                        " session=%x mac=" MACSTR
4001                                        " dev_passwd_id=%d info='%s'%s",
4002                                        MAC2STR(dev), adv_id, conncap,
4003                                        MAC2STR(adv_mac),
4004                                        ses_id, MAC2STR(ses_mac),
4005                                        passwd_id, session_info, feat_cap_str);
4006                 }
4007                 return;
4008         }
4009
4010         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
4011         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4012
4013         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4014                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4015                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4016
4017                 if (persistent_go && !persistent_go->num_p2p_clients) {
4018                         /* remove empty persistent GO */
4019                         wpa_config_remove_network(wpa_s->conf,
4020                                                   persistent_go->id);
4021                 }
4022
4023                 wpa_msg_global(wpa_s, MSG_INFO,
4024                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4025                                " status=%d"
4026                                " adv_id=%x adv_mac=" MACSTR
4027                                " session=%x mac=" MACSTR "%s",
4028                                MAC2STR(dev), status,
4029                                adv_id, MAC2STR(adv_mac),
4030                                ses_id, MAC2STR(ses_mac), feat_cap_str);
4031                 return;
4032         }
4033
4034         /* Clean up stale persistent groups with this device */
4035         if (persist_ssid && persist_ssid_size)
4036                 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4037                                             persist_ssid_size);
4038
4039         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4040             is_zero_ether_addr(grp_mac)) {
4041                 wpa_dbg(wpa_s, MSG_ERROR,
4042                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4043                 return;
4044         }
4045
4046         for (;;) {
4047                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4048                 if (!stale)
4049                         break;
4050
4051                 if (s && s->ssid_len == stale->ssid_len &&
4052                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4053                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4054                         break;
4055
4056                 /* Remove stale persistent group */
4057                 if (stale->mode != WPAS_MODE_P2P_GO ||
4058                     stale->num_p2p_clients <= 1) {
4059                         wpa_config_remove_network(wpa_s->conf, stale->id);
4060                 } else {
4061                         size_t i;
4062
4063                         for (i = 0; i < stale->num_p2p_clients; i++) {
4064                                 if (os_memcmp(stale->p2p_client_list +
4065                                               i * ETH_ALEN,
4066                                               dev, ETH_ALEN) == 0) {
4067                                         os_memmove(stale->p2p_client_list +
4068                                                    i * ETH_ALEN,
4069                                                    stale->p2p_client_list +
4070                                                    (i + 1) * ETH_ALEN,
4071                                                    (stale->num_p2p_clients -
4072                                                     i - 1) * ETH_ALEN);
4073                                         break;
4074                                 }
4075                         }
4076                         stale->num_p2p_clients--;
4077                 }
4078                 save_config = 1;
4079         }
4080
4081         if (save_config)
4082                 p2p_config_write(wpa_s);
4083
4084         if (s) {
4085                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4086                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4087
4088                 if (persistent_go && s != persistent_go &&
4089                     !persistent_go->num_p2p_clients) {
4090                         /* remove empty persistent GO */
4091                         wpa_config_remove_network(wpa_s->conf,
4092                                                   persistent_go->id);
4093                         /* Save config */
4094                 }
4095
4096                 wpa_msg_global(wpa_s, MSG_INFO,
4097                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4098                                " status=%d"
4099                                " adv_id=%x adv_mac=" MACSTR
4100                                " session=%x mac=" MACSTR
4101                                " persist=%d%s",
4102                                MAC2STR(dev), status,
4103                                adv_id, MAC2STR(adv_mac),
4104                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4105                 return;
4106         }
4107
4108         if (conncap == P2PS_SETUP_GROUP_OWNER) {
4109                 /*
4110                  * We need to copy the interface name. Simply saving a
4111                  * pointer isn't enough, since if we use pending_interface_name
4112                  * it will be overwritten when the group is added.
4113                  */
4114                 char go_ifname[100];
4115
4116                 go_ifname[0] = '\0';
4117                 if (!go_wpa_s) {
4118                         wpa_s->global->pending_p2ps_group = 1;
4119                         wpa_s->global->pending_p2ps_group_freq = freq;
4120
4121                         if (!wpas_p2p_create_iface(wpa_s))
4122                                 os_memcpy(go_ifname, wpa_s->ifname,
4123                                           sizeof(go_ifname));
4124                         else if (wpa_s->pending_interface_name[0])
4125                                 os_memcpy(go_ifname,
4126                                           wpa_s->pending_interface_name,
4127                                           sizeof(go_ifname));
4128
4129                         if (!go_ifname[0]) {
4130                                 wpas_p2ps_prov_complete(
4131                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4132                                         dev, adv_mac, ses_mac,
4133                                         grp_mac, adv_id, ses_id, 0, 0,
4134                                         NULL, 0, 0, 0, NULL, NULL, 0, 0);
4135                                 return;
4136                         }
4137
4138                         /* If PD Resp complete, start up the GO */
4139                         if (response_done && persistent_go) {
4140                                 wpas_p2p_group_add_persistent(
4141                                         wpa_s, persistent_go,
4142                                         0, 0, freq, 0, 0, 0, 0, NULL,
4143                                         persistent_go->mode ==
4144                                         WPAS_MODE_P2P_GO ?
4145                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4146                                         0, 0);
4147                         } else if (response_done) {
4148                                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4149                         }
4150
4151                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4152                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4153                                           ETH_ALEN);
4154                                 wpa_s->p2ps_method_config_any = 1;
4155                         }
4156                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4157                         os_memcpy(go_ifname, go_wpa_s->ifname,
4158                                   sizeof(go_ifname));
4159
4160                         if (is_zero_ether_addr(grp_mac)) {
4161                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4162                                         "P2P: Setting PIN-1 for ANY");
4163                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4164                                                           "12345670", NULL, 0,
4165                                                           0);
4166                         } else {
4167                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4168                                         "P2P: Setting PIN-1 for " MACSTR,
4169                                         MAC2STR(grp_mac));
4170                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4171                                                           "12345670", NULL, 0,
4172                                                           0);
4173                         }
4174
4175                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4176                         wpa_s->p2ps_method_config_any = 1;
4177                 }
4178
4179                 wpa_msg_global(wpa_s, MSG_INFO,
4180                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4181                                " status=%d conncap=%x"
4182                                " adv_id=%x adv_mac=" MACSTR
4183                                " session=%x mac=" MACSTR
4184                                " dev_passwd_id=%d go=%s%s",
4185                                MAC2STR(dev), status, conncap,
4186                                adv_id, MAC2STR(adv_mac),
4187                                ses_id, MAC2STR(ses_mac),
4188                                passwd_id, go_ifname, feat_cap_str);
4189                 return;
4190         }
4191
4192         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4193                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4194
4195         if (persistent_go && !persistent_go->num_p2p_clients) {
4196                 /* remove empty persistent GO */
4197                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4198         }
4199
4200         if (conncap == P2PS_SETUP_CLIENT) {
4201                 wpa_msg_global(wpa_s, MSG_INFO,
4202                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4203                                " status=%d conncap=%x"
4204                                " adv_id=%x adv_mac=" MACSTR
4205                                " session=%x mac=" MACSTR
4206                                " dev_passwd_id=%d join=" MACSTR "%s",
4207                                MAC2STR(dev), status, conncap,
4208                                adv_id, MAC2STR(adv_mac),
4209                                ses_id, MAC2STR(ses_mac),
4210                                passwd_id, MAC2STR(grp_mac), feat_cap_str);
4211         } else {
4212                 wpa_msg_global(wpa_s, MSG_INFO,
4213                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4214                                " status=%d conncap=%x"
4215                                " adv_id=%x adv_mac=" MACSTR
4216                                " session=%x mac=" MACSTR
4217                                " dev_passwd_id=%d%s",
4218                                MAC2STR(dev), status, conncap,
4219                                adv_id, MAC2STR(adv_mac),
4220                                ses_id, MAC2STR(ses_mac),
4221                                passwd_id, feat_cap_str);
4222         }
4223 }
4224
4225
4226 static int _wpas_p2p_in_progress(void *ctx)
4227 {
4228         struct wpa_supplicant *wpa_s = ctx;
4229         return wpas_p2p_in_progress(wpa_s);
4230 }
4231
4232
4233 static int wpas_prov_disc_resp_cb(void *ctx)
4234 {
4235         struct wpa_supplicant *wpa_s = ctx;
4236         struct wpa_ssid *persistent_go;
4237         unsigned int freq;
4238
4239         if (!wpa_s->global->pending_p2ps_group)
4240                 return 0;
4241
4242         freq = wpa_s->global->pending_p2ps_group_freq;
4243         wpa_s->global->pending_p2ps_group_freq = 0;
4244         wpa_s->global->pending_p2ps_group = 0;
4245
4246         if (wpas_p2p_get_go_group(wpa_s))
4247                 return 0;
4248         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4249
4250         if (persistent_go) {
4251                 wpas_p2p_group_add_persistent(
4252                         wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL,
4253                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4254                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4255         } else {
4256                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4257         }
4258
4259         return 1;
4260 }
4261
4262
4263 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4264                                        unsigned int *len,
4265                                        unsigned int *freq_list)
4266 {
4267         struct wpa_supplicant *wpa_s = ctx;
4268
4269         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4270                                           WPA_IF_P2P_CLIENT, len, freq_list);
4271 }
4272
4273
4274 /**
4275  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4276  * @global: Pointer to global data from wpa_supplicant_init()
4277  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4278  * Returns: 0 on success, -1 on failure
4279  */
4280 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4281 {
4282         struct p2p_config p2p;
4283         int i;
4284
4285         if (wpa_s->conf->p2p_disabled)
4286                 return 0;
4287
4288         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4289                 return 0;
4290
4291         if (global->p2p)
4292                 return 0;
4293
4294         os_memset(&p2p, 0, sizeof(p2p));
4295         p2p.cb_ctx = wpa_s;
4296         p2p.debug_print = wpas_p2p_debug_print;
4297         p2p.p2p_scan = wpas_p2p_scan;
4298         p2p.send_action = wpas_send_action;
4299         p2p.send_action_done = wpas_send_action_done;
4300         p2p.go_neg_completed = wpas_go_neg_completed;
4301         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4302         p2p.dev_found = wpas_dev_found;
4303         p2p.dev_lost = wpas_dev_lost;
4304         p2p.find_stopped = wpas_find_stopped;
4305         p2p.start_listen = wpas_start_listen;
4306         p2p.stop_listen = wpas_stop_listen;
4307         p2p.send_probe_resp = wpas_send_probe_resp;
4308         p2p.sd_request = wpas_sd_request;
4309         p2p.sd_response = wpas_sd_response;
4310         p2p.prov_disc_req = wpas_prov_disc_req;
4311         p2p.prov_disc_resp = wpas_prov_disc_resp;
4312         p2p.prov_disc_fail = wpas_prov_disc_fail;
4313         p2p.invitation_process = wpas_invitation_process;
4314         p2p.invitation_received = wpas_invitation_received;
4315         p2p.invitation_result = wpas_invitation_result;
4316         p2p.get_noa = wpas_get_noa;
4317         p2p.go_connected = wpas_go_connected;
4318         p2p.presence_resp = wpas_presence_resp;
4319         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4320         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4321         p2p.get_persistent_group = wpas_get_persistent_group;
4322         p2p.get_go_info = wpas_get_go_info;
4323         p2p.remove_stale_groups = wpas_remove_stale_groups;
4324         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4325         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4326         p2p.p2ps_group_capability = p2ps_group_capability;
4327         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4328
4329         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4330         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4331         p2p.dev_name = wpa_s->conf->device_name;
4332         p2p.manufacturer = wpa_s->conf->manufacturer;
4333         p2p.model_name = wpa_s->conf->model_name;
4334         p2p.model_number = wpa_s->conf->model_number;
4335         p2p.serial_number = wpa_s->conf->serial_number;
4336         if (wpa_s->wps) {
4337                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4338                 p2p.config_methods = wpa_s->wps->config_methods;
4339         }
4340
4341         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4342                 wpa_printf(MSG_ERROR,
4343                            "P2P: Failed to configure supported channel list");
4344                 return -1;
4345         }
4346
4347         if (wpa_s->conf->p2p_listen_reg_class &&
4348             wpa_s->conf->p2p_listen_channel) {
4349                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4350                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4351                 p2p.channel_forced = 1;
4352         } else {
4353                 /*
4354                  * Pick one of the social channels randomly as the listen
4355                  * channel.
4356                  */
4357                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4358                                                  &p2p.channel) != 0) {
4359                         wpa_printf(MSG_INFO,
4360                                    "P2P: No social channels supported by the driver - do not enable P2P");
4361                         return 0;
4362                 }
4363                 p2p.channel_forced = 0;
4364         }
4365         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4366                    p2p.reg_class, p2p.channel);
4367
4368         if (wpa_s->conf->p2p_oper_reg_class &&
4369             wpa_s->conf->p2p_oper_channel) {
4370                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4371                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4372                 p2p.cfg_op_channel = 1;
4373                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4374                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4375
4376         } else {
4377                 /*
4378                  * Use random operation channel from 2.4 GHz band social
4379                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4380                  * other preference is indicated.
4381                  */
4382                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4383                                                  &p2p.op_channel) != 0) {
4384                         wpa_printf(MSG_ERROR,
4385                                    "P2P: Failed to select random social channel as operation channel");
4386                         return -1;
4387                 }
4388                 p2p.cfg_op_channel = 0;
4389                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4390                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4391         }
4392
4393         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4394                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4395                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4396         }
4397
4398         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4399                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4400                 p2p.country[2] = 0x04;
4401         } else
4402                 os_memcpy(p2p.country, "XX\x04", 3);
4403
4404         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4405                   WPS_DEV_TYPE_LEN);
4406
4407         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4408         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4409                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4410
4411         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4412                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4413
4414         p2p.max_peers = 100;
4415
4416         if (wpa_s->conf->p2p_ssid_postfix) {
4417                 p2p.ssid_postfix_len =
4418                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4419                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4420                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4421                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4422                           p2p.ssid_postfix_len);
4423         }
4424
4425         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4426
4427         p2p.max_listen = wpa_s->max_remain_on_chan;
4428
4429         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4430             wpa_s->conf->p2p_passphrase_len <= 63)
4431                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4432         else
4433                 p2p.passphrase_len = 8;
4434
4435         global->p2p = p2p_init(&p2p);
4436         if (global->p2p == NULL)
4437                 return -1;
4438         global->p2p_init_wpa_s = wpa_s;
4439
4440         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4441                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4442                         continue;
4443                 p2p_add_wps_vendor_extension(
4444                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4445         }
4446
4447         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4448
4449         return 0;
4450 }
4451
4452
4453 /**
4454  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4455  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4456  *
4457  * This function deinitialize per-interface P2P data.
4458  */
4459 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4460 {
4461         if (wpa_s->driver && wpa_s->drv_priv)
4462                 wpa_drv_probe_req_report(wpa_s, 0);
4463
4464         if (wpa_s->go_params) {
4465                 /* Clear any stored provisioning info */
4466                 p2p_clear_provisioning_info(
4467                         wpa_s->global->p2p,
4468                         wpa_s->go_params->peer_device_addr);
4469         }
4470
4471         os_free(wpa_s->go_params);
4472         wpa_s->go_params = NULL;
4473         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4474         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4475         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4476         wpa_s->p2p_long_listen = 0;
4477         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4478         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4479         wpas_p2p_remove_pending_group_interface(wpa_s);
4480         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4481         wpas_p2p_listen_work_done(wpa_s);
4482         if (wpa_s->p2p_send_action_work) {
4483                 os_free(wpa_s->p2p_send_action_work->ctx);
4484                 radio_work_done(wpa_s->p2p_send_action_work);
4485                 wpa_s->p2p_send_action_work = NULL;
4486         }
4487         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4488
4489         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4490         wpa_s->p2p_oob_dev_pw = NULL;
4491
4492         os_free(wpa_s->p2p_group_common_freqs);
4493         wpa_s->p2p_group_common_freqs = NULL;
4494         wpa_s->p2p_group_common_freqs_num = 0;
4495
4496         /* TODO: remove group interface from the driver if this wpa_s instance
4497          * is on top of a P2P group interface */
4498 }
4499
4500
4501 /**
4502  * wpas_p2p_deinit_global - Deinitialize global P2P module
4503  * @global: Pointer to global data from wpa_supplicant_init()
4504  *
4505  * This function deinitializes the global (per device) P2P module.
4506  */
4507 static void wpas_p2p_deinit_global(struct wpa_global *global)
4508 {
4509         struct wpa_supplicant *wpa_s, *tmp;
4510
4511         wpa_s = global->ifaces;
4512
4513         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4514
4515         /* Remove remaining P2P group interfaces */
4516         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4517                 wpa_s = wpa_s->next;
4518         while (wpa_s) {
4519                 tmp = global->ifaces;
4520                 while (tmp &&
4521                        (tmp == wpa_s ||
4522                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4523                         tmp = tmp->next;
4524                 }
4525                 if (tmp == NULL)
4526                         break;
4527                 /* Disconnect from the P2P group and deinit the interface */
4528                 wpas_p2p_disconnect(tmp);
4529         }
4530
4531         /*
4532          * Deinit GO data on any possibly remaining interface (if main
4533          * interface is used as GO).
4534          */
4535         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4536                 if (wpa_s->ap_iface)
4537                         wpas_p2p_group_deinit(wpa_s);
4538         }
4539
4540         p2p_deinit(global->p2p);
4541         global->p2p = NULL;
4542         global->p2p_init_wpa_s = NULL;
4543 }
4544
4545
4546 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4547 {
4548         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4549             wpa_s->conf->p2p_no_group_iface)
4550                 return 0; /* separate interface disabled per configuration */
4551         if (wpa_s->drv_flags &
4552             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4553              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4554                 return 1; /* P2P group requires a new interface in every case
4555                            */
4556         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4557                 return 0; /* driver does not support concurrent operations */
4558         if (wpa_s->global->ifaces->next)
4559                 return 1; /* more that one interface already in use */
4560         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4561                 return 1; /* this interface is already in use */
4562         return 0;
4563 }
4564
4565
4566 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4567                                  const u8 *peer_addr,
4568                                  enum p2p_wps_method wps_method,
4569                                  int go_intent, const u8 *own_interface_addr,
4570                                  unsigned int force_freq, int persistent_group,
4571                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4572 {
4573         if (persistent_group && wpa_s->conf->persistent_reconnect)
4574                 persistent_group = 2;
4575
4576         /*
4577          * Increase GO config timeout if HT40 is used since it takes some time
4578          * to scan channels for coex purposes before the BSS can be started.
4579          */
4580         p2p_set_config_timeout(wpa_s->global->p2p,
4581                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4582
4583         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4584                            go_intent, own_interface_addr, force_freq,
4585                            persistent_group, ssid ? ssid->ssid : NULL,
4586                            ssid ? ssid->ssid_len : 0,
4587                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4588                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4589                            0);
4590 }
4591
4592
4593 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4594                                 const u8 *peer_addr,
4595                                 enum p2p_wps_method wps_method,
4596                                 int go_intent, const u8 *own_interface_addr,
4597                                 unsigned int force_freq, int persistent_group,
4598                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4599 {
4600         if (persistent_group && wpa_s->conf->persistent_reconnect)
4601                 persistent_group = 2;
4602
4603         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4604                              go_intent, own_interface_addr, force_freq,
4605                              persistent_group, ssid ? ssid->ssid : NULL,
4606                              ssid ? ssid->ssid_len : 0, pref_freq,
4607                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4608                              0);
4609 }
4610
4611
4612 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4613 {
4614         wpa_s->p2p_join_scan_count++;
4615         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4616                    wpa_s->p2p_join_scan_count);
4617         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4618                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4619                            " for join operationg - stop join attempt",
4620                            MAC2STR(wpa_s->pending_join_iface_addr));
4621                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4622                 if (wpa_s->p2p_auto_pd) {
4623                         wpa_s->p2p_auto_pd = 0;
4624                         wpa_msg_global(wpa_s, MSG_INFO,
4625                                        P2P_EVENT_PROV_DISC_FAILURE
4626                                        " p2p_dev_addr=" MACSTR " status=N/A",
4627                                        MAC2STR(wpa_s->pending_join_dev_addr));
4628                         return;
4629                 }
4630                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4631                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4632                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4633         }
4634 }
4635
4636
4637 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4638 {
4639         int res;
4640         unsigned int num, i;
4641         struct wpa_used_freq_data *freqs;
4642
4643         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4644                 /* Multiple channels are supported and not all are in use */
4645                 return 0;
4646         }
4647
4648         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4649                           sizeof(struct wpa_used_freq_data));
4650         if (!freqs)
4651                 return 1;
4652
4653         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4654                                         wpa_s->num_multichan_concurrent);
4655
4656         for (i = 0; i < num; i++) {
4657                 if (freqs[i].freq == freq) {
4658                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4659                                    freq);
4660                         res = 0;
4661                         goto exit_free;
4662                 }
4663         }
4664
4665         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4666         res = 1;
4667
4668 exit_free:
4669         os_free(freqs);
4670         return res;
4671 }
4672
4673
4674 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4675                             const u8 *peer_dev_addr)
4676 {
4677         struct wpa_bss *bss;
4678         int updated;
4679
4680         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4681         if (bss == NULL)
4682                 return -1;
4683         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4684                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4685                            "last scan");
4686                 return 0;
4687         }
4688
4689         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4690                                     &bss->last_update);
4691         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4692                    "%ld.%06ld (%supdated in last scan)",
4693                    bss->last_update.sec, bss->last_update.usec,
4694                    updated ? "": "not ");
4695
4696         return updated;
4697 }
4698
4699
4700 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4701                                    struct wpa_scan_results *scan_res)
4702 {
4703         struct wpa_bss *bss = NULL;
4704         int freq;
4705         u8 iface_addr[ETH_ALEN];
4706
4707         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4708
4709         if (wpa_s->global->p2p_disabled)
4710                 return;
4711
4712         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4713                    scan_res ? (int) scan_res->num : -1,
4714                    wpa_s->p2p_auto_join ? "auto_" : "");
4715
4716         if (scan_res)
4717                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4718
4719         if (wpa_s->p2p_auto_pd) {
4720                 int join = wpas_p2p_peer_go(wpa_s,
4721                                             wpa_s->pending_join_dev_addr);
4722                 if (join == 0 &&
4723                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4724                         wpa_s->auto_pd_scan_retry++;
4725                         bss = wpa_bss_get_bssid_latest(
4726                                 wpa_s, wpa_s->pending_join_dev_addr);
4727                         if (bss) {
4728                                 freq = bss->freq;
4729                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4730                                            "the peer " MACSTR " at %d MHz",
4731                                            wpa_s->auto_pd_scan_retry,
4732                                            MAC2STR(wpa_s->
4733                                                    pending_join_dev_addr),
4734                                            freq);
4735                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4736                                 return;
4737                         }
4738                 }
4739
4740                 if (join < 0)
4741                         join = 0;
4742
4743                 wpa_s->p2p_auto_pd = 0;
4744                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4745                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4746                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4747                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4748                                       wpa_s->pending_join_dev_addr, NULL,
4749                                       wpa_s->pending_pd_config_methods, join,
4750                                       0, wpa_s->user_initiated_pd) < 0) {
4751                         wpa_s->p2p_auto_pd = 0;
4752                         wpa_msg_global(wpa_s, MSG_INFO,
4753                                        P2P_EVENT_PROV_DISC_FAILURE
4754                                        " p2p_dev_addr=" MACSTR " status=N/A",
4755                                        MAC2STR(wpa_s->pending_join_dev_addr));
4756                 }
4757                 return;
4758         }
4759
4760         if (wpa_s->p2p_auto_join) {
4761                 int join = wpas_p2p_peer_go(wpa_s,
4762                                             wpa_s->pending_join_dev_addr);
4763                 if (join < 0) {
4764                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4765                                    "running a GO -> use GO Negotiation");
4766                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4767                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4768                                        "reason=peer-not-running-GO");
4769                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4770                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4771                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4772                                          wpa_s->p2p_go_intent,
4773                                          wpa_s->p2p_connect_freq,
4774                                          wpa_s->p2p_go_vht_center_freq2,
4775                                          wpa_s->p2p_persistent_id,
4776                                          wpa_s->p2p_pd_before_go_neg,
4777                                          wpa_s->p2p_go_ht40,
4778                                          wpa_s->p2p_go_vht,
4779                                          wpa_s->p2p_go_max_oper_chwidth);
4780                         return;
4781                 }
4782
4783                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4784                            "try to join the group", join ? "" :
4785                            " in older scan");
4786                 if (!join) {
4787                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4788                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4789                         wpa_s->p2p_fallback_to_go_neg = 1;
4790                 }
4791         }
4792
4793         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4794                                  wpa_s->pending_join_iface_addr);
4795         if (freq < 0 &&
4796             p2p_get_interface_addr(wpa_s->global->p2p,
4797                                    wpa_s->pending_join_dev_addr,
4798                                    iface_addr) == 0 &&
4799             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4800             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4801                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4802                            "address for join from " MACSTR " to " MACSTR
4803                            " based on newly discovered P2P peer entry",
4804                            MAC2STR(wpa_s->pending_join_iface_addr),
4805                            MAC2STR(iface_addr));
4806                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4807                           ETH_ALEN);
4808
4809                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4810                                          wpa_s->pending_join_iface_addr);
4811         }
4812         if (freq >= 0) {
4813                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4814                            "from P2P peer table: %d MHz", freq);
4815         }
4816         if (wpa_s->p2p_join_ssid_len) {
4817                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4818                            MACSTR " and SSID %s",
4819                            MAC2STR(wpa_s->pending_join_iface_addr),
4820                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4821                                         wpa_s->p2p_join_ssid_len));
4822                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4823                                   wpa_s->p2p_join_ssid,
4824                                   wpa_s->p2p_join_ssid_len);
4825         }
4826         if (!bss) {
4827                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4828                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4829                 bss = wpa_bss_get_bssid_latest(wpa_s,
4830                                                wpa_s->pending_join_iface_addr);
4831         }
4832         if (bss) {
4833                 u8 dev_addr[ETH_ALEN];
4834
4835                 freq = bss->freq;
4836                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4837                            "from BSS table: %d MHz (SSID %s)", freq,
4838                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4839                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4840                                        dev_addr) == 0 &&
4841                     os_memcmp(wpa_s->pending_join_dev_addr,
4842                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4843                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4844                               ETH_ALEN) != 0) {
4845                         wpa_printf(MSG_DEBUG,
4846                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4847                                    MAC2STR(dev_addr),
4848                                    MAC2STR(wpa_s->pending_join_dev_addr));
4849                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4850                                   ETH_ALEN);
4851                 }
4852         }
4853         if (freq > 0) {
4854                 u16 method;
4855
4856                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4857                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4858                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4859                                        "reason=FREQ_CONFLICT");
4860                         wpas_notify_p2p_group_formation_failure(
4861                                 wpa_s, "FREQ_CONFLICT");
4862                         return;
4863                 }
4864
4865                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4866                            "prior to joining an existing group (GO " MACSTR
4867                            " freq=%u MHz)",
4868                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4869                 wpa_s->pending_pd_before_join = 1;
4870
4871                 switch (wpa_s->pending_join_wps_method) {
4872                 case WPS_PIN_DISPLAY:
4873                         method = WPS_CONFIG_KEYPAD;
4874                         break;
4875                 case WPS_PIN_KEYPAD:
4876                         method = WPS_CONFIG_DISPLAY;
4877                         break;
4878                 case WPS_PBC:
4879                         method = WPS_CONFIG_PUSHBUTTON;
4880                         break;
4881                 case WPS_P2PS:
4882                         method = WPS_CONFIG_P2PS;
4883                         break;
4884                 default:
4885                         method = 0;
4886                         break;
4887                 }
4888
4889                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4890                                                wpa_s->pending_join_dev_addr) ==
4891                      method)) {
4892                         /*
4893                          * We have already performed provision discovery for
4894                          * joining the group. Proceed directly to join
4895                          * operation without duplicated provision discovery. */
4896                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4897                                    "with " MACSTR " already done - proceed to "
4898                                    "join",
4899                                    MAC2STR(wpa_s->pending_join_dev_addr));
4900                         wpa_s->pending_pd_before_join = 0;
4901                         goto start;
4902                 }
4903
4904                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4905                                       wpa_s->pending_join_dev_addr,
4906                                       NULL, method, 1,
4907                                       freq, wpa_s->user_initiated_pd) < 0) {
4908                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4909                                    "Discovery Request before joining an "
4910                                    "existing group");
4911                         wpa_s->pending_pd_before_join = 0;
4912                         goto start;
4913                 }
4914                 return;
4915         }
4916
4917         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4918         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4919         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4920         wpas_p2p_check_join_scan_limit(wpa_s);
4921         return;
4922
4923 start:
4924         /* Start join operation immediately */
4925         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4926 }
4927
4928
4929 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4930                                    const u8 *ssid, size_t ssid_len)
4931 {
4932         int ret;
4933         struct wpa_driver_scan_params params;
4934         struct wpabuf *wps_ie, *ies;
4935         size_t ielen;
4936         int freqs[2] = { 0, 0 };
4937
4938         os_memset(&params, 0, sizeof(params));
4939
4940         /* P2P Wildcard SSID */
4941         params.num_ssids = 1;
4942         if (ssid && ssid_len) {
4943                 params.ssids[0].ssid = ssid;
4944                 params.ssids[0].ssid_len = ssid_len;
4945                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4946                 wpa_s->p2p_join_ssid_len = ssid_len;
4947         } else {
4948                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4949                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4950                 wpa_s->p2p_join_ssid_len = 0;
4951         }
4952
4953         wpa_s->wps->dev.p2p = 1;
4954         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4955                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4956                                         NULL);
4957         if (wps_ie == NULL) {
4958                 wpas_p2p_scan_res_join(wpa_s, NULL);
4959                 return;
4960         }
4961
4962         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4963         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4964         if (ies == NULL) {
4965                 wpabuf_free(wps_ie);
4966                 wpas_p2p_scan_res_join(wpa_s, NULL);
4967                 return;
4968         }
4969         wpabuf_put_buf(ies, wps_ie);
4970         wpabuf_free(wps_ie);
4971
4972         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4973
4974         params.p2p_probe = 1;
4975         params.extra_ies = wpabuf_head(ies);
4976         params.extra_ies_len = wpabuf_len(ies);
4977
4978         if (!freq) {
4979                 int oper_freq;
4980                 /*
4981                  * If freq is not provided, check the operating freq of the GO
4982                  * and use a single channel scan on if possible.
4983                  */
4984                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4985                                               wpa_s->pending_join_iface_addr);
4986                 if (oper_freq > 0)
4987                         freq = oper_freq;
4988         }
4989         if (freq > 0) {
4990                 freqs[0] = freq;
4991                 params.freqs = freqs;
4992         }
4993
4994         /*
4995          * Run a scan to update BSS table and start Provision Discovery once
4996          * the new scan results become available.
4997          */
4998         ret = wpa_drv_scan(wpa_s, &params);
4999         if (!ret) {
5000                 os_get_reltime(&wpa_s->scan_trigger_time);
5001                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
5002                 wpa_s->own_scan_requested = 1;
5003         }
5004
5005         wpabuf_free(ies);
5006
5007         if (ret) {
5008                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5009                            "try again later");
5010                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5011                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5012                 wpas_p2p_check_join_scan_limit(wpa_s);
5013         }
5014 }
5015
5016
5017 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5018 {
5019         struct wpa_supplicant *wpa_s = eloop_ctx;
5020         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5021 }
5022
5023
5024 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5025                          const u8 *dev_addr, enum p2p_wps_method wps_method,
5026                          int auto_join, int op_freq,
5027                          const u8 *ssid, size_t ssid_len)
5028 {
5029         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5030                    MACSTR " dev " MACSTR " op_freq=%d)%s",
5031                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5032                    auto_join ? " (auto_join)" : "");
5033         if (ssid && ssid_len) {
5034                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5035                            wpa_ssid_txt(ssid, ssid_len));
5036         }
5037
5038         wpa_s->p2p_auto_pd = 0;
5039         wpa_s->p2p_auto_join = !!auto_join;
5040         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5041         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5042         wpa_s->pending_join_wps_method = wps_method;
5043
5044         /* Make sure we are not running find during connection establishment */
5045         wpas_p2p_stop_find(wpa_s);
5046
5047         wpa_s->p2p_join_scan_count = 0;
5048         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5049         return 0;
5050 }
5051
5052
5053 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5054                                const u8 *ssid, size_t ssid_len)
5055 {
5056         struct wpa_supplicant *group;
5057         struct p2p_go_neg_results res;
5058         struct wpa_bss *bss;
5059
5060         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5061         if (group == NULL)
5062                 return -1;
5063         if (group != wpa_s) {
5064                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5065                           sizeof(group->p2p_pin));
5066                 group->p2p_wps_method = wpa_s->p2p_wps_method;
5067         } else {
5068                 /*
5069                  * Need to mark the current interface for p2p_group_formation
5070                  * when a separate group interface is not used. This is needed
5071                  * to allow p2p_cancel stop a pending p2p_connect-join.
5072                  * wpas_p2p_init_group_interface() addresses this for the case
5073                  * where a separate group interface is used.
5074                  */
5075                 wpa_s->global->p2p_group_formation = wpa_s;
5076         }
5077
5078         group->p2p_in_provisioning = 1;
5079         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5080
5081         os_memset(&res, 0, sizeof(res));
5082         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5083         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5084                   ETH_ALEN);
5085         res.wps_method = wpa_s->pending_join_wps_method;
5086         if (freq && ssid && ssid_len) {
5087                 res.freq = freq;
5088                 res.ssid_len = ssid_len;
5089                 os_memcpy(res.ssid, ssid, ssid_len);
5090         } else {
5091                 bss = wpa_bss_get_bssid_latest(wpa_s,
5092                                                wpa_s->pending_join_iface_addr);
5093                 if (bss) {
5094                         res.freq = bss->freq;
5095                         res.ssid_len = bss->ssid_len;
5096                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5097                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5098                                    bss->freq,
5099                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
5100                 }
5101         }
5102
5103         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5104                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5105                            "starting client");
5106                 wpa_drv_cancel_remain_on_channel(wpa_s);
5107                 wpa_s->off_channel_freq = 0;
5108                 wpa_s->roc_waiting_drv_freq = 0;
5109         }
5110         wpas_start_wps_enrollee(group, &res);
5111
5112         /*
5113          * Allow a longer timeout for join-a-running-group than normal 15
5114          * second group formation timeout since the GO may not have authorized
5115          * our connection yet.
5116          */
5117         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5118         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5119                                wpa_s, NULL);
5120
5121         return 0;
5122 }
5123
5124
5125 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5126                                 int *force_freq, int *pref_freq, int go,
5127                                 unsigned int *pref_freq_list,
5128                                 unsigned int *num_pref_freq)
5129 {
5130         struct wpa_used_freq_data *freqs;
5131         int res, best_freq, num_unused;
5132         unsigned int freq_in_use = 0, num, i, max_pref_freq;
5133
5134         max_pref_freq = *num_pref_freq;
5135         *num_pref_freq = 0;
5136
5137         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5138                           sizeof(struct wpa_used_freq_data));
5139         if (!freqs)
5140                 return -1;
5141
5142         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5143                                         wpa_s->num_multichan_concurrent);
5144
5145         /*
5146          * It is possible that the total number of used frequencies is bigger
5147          * than the number of frequencies used for P2P, so get the system wide
5148          * number of unused frequencies.
5149          */
5150         num_unused = wpas_p2p_num_unused_channels(wpa_s);
5151
5152         wpa_printf(MSG_DEBUG,
5153                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5154                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
5155
5156         if (freq > 0) {
5157                 int ret;
5158                 if (go)
5159                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5160                 else
5161                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5162                 if (!ret) {
5163                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5164                             ieee80211_is_dfs(freq)) {
5165                                 /*
5166                                  * If freq is a DFS channel and DFS is offloaded
5167                                  * to the driver, allow P2P GO to use it.
5168                                  */
5169                                 wpa_printf(MSG_DEBUG,
5170                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5171                                            freq);
5172                         } else {
5173                                 wpa_printf(MSG_DEBUG,
5174                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5175                                            freq);
5176                                 res = -3;
5177                                 goto exit_free;
5178                         }
5179                 }
5180
5181                 for (i = 0; i < num; i++) {
5182                         if (freqs[i].freq == freq)
5183                                 freq_in_use = 1;
5184                 }
5185
5186                 if (num_unused <= 0 && !freq_in_use) {
5187                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5188                                    freq);
5189                         res = -2;
5190                         goto exit_free;
5191                 }
5192                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5193                            "requested channel (%u MHz)", freq);
5194                 *force_freq = freq;
5195                 goto exit_ok;
5196         }
5197
5198         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5199
5200         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5201                 enum wpa_driver_if_type iface_type;
5202
5203                 if (go)
5204                         iface_type = WPA_IF_P2P_GO;
5205                 else
5206                         iface_type = WPA_IF_P2P_CLIENT;
5207
5208                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5209                            best_freq, go);
5210
5211                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5212                                                  &max_pref_freq,
5213                                                  pref_freq_list);
5214                 if (!res && max_pref_freq > 0) {
5215                         *num_pref_freq = max_pref_freq;
5216                         i = 0;
5217                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5218                                                         pref_freq_list[i]) &&
5219                                i < *num_pref_freq) {
5220                                 wpa_printf(MSG_DEBUG,
5221                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5222                                            i, pref_freq_list[i]);
5223                                 i++;
5224                         }
5225                         if (i != *num_pref_freq) {
5226                                 best_freq = pref_freq_list[i];
5227                                 wpa_printf(MSG_DEBUG,
5228                                            "P2P: Using preferred_freq_list[%d]=%d",
5229                                            i, best_freq);
5230                         } else {
5231                                 wpa_printf(MSG_DEBUG,
5232                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5233                                 *num_pref_freq = 0;
5234                         }
5235                 } else {
5236                         wpa_printf(MSG_DEBUG,
5237                                    "P2P: No preferred frequency list available");
5238                 }
5239         }
5240
5241         /* We have a candidate frequency to use */
5242         if (best_freq > 0) {
5243                 if (*pref_freq == 0 && num_unused > 0) {
5244                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5245                                    best_freq);
5246                         *pref_freq = best_freq;
5247                 } else {
5248                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5249                                    best_freq);
5250                         *force_freq = best_freq;
5251                 }
5252         } else if (num_unused > 0) {
5253                 wpa_printf(MSG_DEBUG,
5254                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5255                 *force_freq = 0;
5256         } else {
5257                 wpa_printf(MSG_DEBUG,
5258                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5259                 res = -2;
5260                 goto exit_free;
5261         }
5262
5263 exit_ok:
5264         res = 0;
5265 exit_free:
5266         os_free(freqs);
5267         return res;
5268 }
5269
5270
5271 /**
5272  * wpas_p2p_connect - Request P2P Group Formation to be started
5273  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5274  * @peer_addr: Address of the peer P2P Device
5275  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5276  * @persistent_group: Whether to create a persistent group
5277  * @auto_join: Whether to select join vs. GO Negotiation automatically
5278  * @join: Whether to join an existing group (as a client) instead of starting
5279  *      Group Owner negotiation; @peer_addr is BSSID in that case
5280  * @auth: Whether to only authorize the connection instead of doing that and
5281  *      initiating Group Owner negotiation
5282  * @go_intent: GO Intent or -1 to use default
5283  * @freq: Frequency for the group or 0 for auto-selection
5284  * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5285  * @persistent_id: Persistent group credentials to use for forcing GO
5286  *      parameters or -1 to generate new values (SSID/passphrase)
5287  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5288  *      interoperability workaround when initiating group formation
5289  * @ht40: Start GO with 40 MHz channel width
5290  * @vht:  Start GO with VHT support
5291  * @vht_chwidth: Channel width supported by GO operating with VHT support
5292  *      (VHT_CHANWIDTH_*).
5293  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5294  *      failure, -2 on failure due to channel not currently available,
5295  *      -3 if forced channel is not supported
5296  */
5297 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5298                      const char *pin, enum p2p_wps_method wps_method,
5299                      int persistent_group, int auto_join, int join, int auth,
5300                      int go_intent, int freq, unsigned int vht_center_freq2,
5301                      int persistent_id, int pd, int ht40, int vht,
5302                      unsigned int vht_chwidth)
5303 {
5304         int force_freq = 0, pref_freq = 0;
5305         int ret = 0, res;
5306         enum wpa_driver_if_type iftype;
5307         const u8 *if_addr;
5308         struct wpa_ssid *ssid = NULL;
5309         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5310
5311         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5312                 return -1;
5313
5314         if (persistent_id >= 0) {
5315                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5316                 if (ssid == NULL || ssid->disabled != 2 ||
5317                     ssid->mode != WPAS_MODE_P2P_GO)
5318                         return -1;
5319         }
5320
5321         os_free(wpa_s->global->add_psk);
5322         wpa_s->global->add_psk = NULL;
5323
5324         wpa_s->global->p2p_fail_on_wps_complete = 0;
5325         wpa_s->global->pending_p2ps_group = 0;
5326         wpa_s->global->pending_p2ps_group_freq = 0;
5327         wpa_s->p2ps_method_config_any = 0;
5328
5329         if (go_intent < 0)
5330                 go_intent = wpa_s->conf->p2p_go_intent;
5331
5332         if (!auth)
5333                 wpa_s->p2p_long_listen = 0;
5334
5335         wpa_s->p2p_wps_method = wps_method;
5336         wpa_s->p2p_persistent_group = !!persistent_group;
5337         wpa_s->p2p_persistent_id = persistent_id;
5338         wpa_s->p2p_go_intent = go_intent;
5339         wpa_s->p2p_connect_freq = freq;
5340         wpa_s->p2p_fallback_to_go_neg = 0;
5341         wpa_s->p2p_pd_before_go_neg = !!pd;
5342         wpa_s->p2p_go_ht40 = !!ht40;
5343         wpa_s->p2p_go_vht = !!vht;
5344         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5345         wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5346
5347         if (pin)
5348                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5349         else if (wps_method == WPS_PIN_DISPLAY) {
5350                 ret = wps_generate_pin();
5351                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5352                                   "%08d", ret);
5353                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5354                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5355                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5356                            wpa_s->p2p_pin);
5357         } else
5358                 wpa_s->p2p_pin[0] = '\0';
5359
5360         if (join || auto_join) {
5361                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5362                 if (auth) {
5363                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5364                                    "connect a running group from " MACSTR,
5365                                    MAC2STR(peer_addr));
5366                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5367                         return ret;
5368                 }
5369                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5370                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5371                                            iface_addr) < 0) {
5372                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5373                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5374                                          dev_addr);
5375                 }
5376                 if (auto_join) {
5377                         os_get_reltime(&wpa_s->p2p_auto_started);
5378                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5379                                    "%ld.%06ld",
5380                                    wpa_s->p2p_auto_started.sec,
5381                                    wpa_s->p2p_auto_started.usec);
5382                 }
5383                 wpa_s->user_initiated_pd = 1;
5384                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5385                                   auto_join, freq, NULL, 0) < 0)
5386                         return -1;
5387                 return ret;
5388         }
5389
5390         size = P2P_MAX_PREF_CHANNELS;
5391         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5392                                    go_intent == 15, pref_freq_list, &size);
5393         if (res)
5394                 return res;
5395         wpas_p2p_set_own_freq_preference(wpa_s,
5396                                          force_freq ? force_freq : pref_freq);
5397
5398         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5399
5400         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5401
5402         if (wpa_s->create_p2p_iface) {
5403                 /* Prepare to add a new interface for the group */
5404                 iftype = WPA_IF_P2P_GROUP;
5405                 if (go_intent == 15)
5406                         iftype = WPA_IF_P2P_GO;
5407                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5408                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5409                                    "interface for the group");
5410                         return -1;
5411                 }
5412
5413                 if_addr = wpa_s->pending_interface_addr;
5414         } else {
5415                 if_addr = wpa_s->own_addr;
5416                 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5417         }
5418
5419         if (auth) {
5420                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5421                                          go_intent, if_addr,
5422                                          force_freq, persistent_group, ssid,
5423                                          pref_freq) < 0)
5424                         return -1;
5425                 return ret;
5426         }
5427
5428         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5429                                   go_intent, if_addr, force_freq,
5430                                   persistent_group, ssid, pref_freq) < 0) {
5431                 if (wpa_s->create_p2p_iface)
5432                         wpas_p2p_remove_pending_group_interface(wpa_s);
5433                 return -1;
5434         }
5435         return ret;
5436 }
5437
5438
5439 /**
5440  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5441  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5442  * @freq: Frequency of the channel in MHz
5443  * @duration: Duration of the stay on the channel in milliseconds
5444  *
5445  * This callback is called when the driver indicates that it has started the
5446  * requested remain-on-channel duration.
5447  */
5448 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5449                                    unsigned int freq, unsigned int duration)
5450 {
5451         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5452                 return;
5453         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)",
5454                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5455                    wpa_s->roc_waiting_drv_freq, freq, duration);
5456         if (wpa_s->off_channel_freq &&
5457             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5458                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5459                               wpa_s->pending_listen_duration);
5460                 wpa_s->pending_listen_freq = 0;
5461         } else {
5462                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5463                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5464                            freq, duration);
5465         }
5466 }
5467
5468
5469 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5470 {
5471         /* Limit maximum Listen state time based on driver limitation. */
5472         if (timeout > wpa_s->max_remain_on_chan)
5473                 timeout = wpa_s->max_remain_on_chan;
5474
5475         return p2p_listen(wpa_s->global->p2p, timeout);
5476 }
5477
5478
5479 /**
5480  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5481  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5482  * @freq: Frequency of the channel in MHz
5483  *
5484  * This callback is called when the driver indicates that a remain-on-channel
5485  * operation has been completed, i.e., the duration on the requested channel
5486  * has timed out.
5487  */
5488 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5489                                           unsigned int freq)
5490 {
5491         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5492                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5493                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5494         wpas_p2p_listen_work_done(wpa_s);
5495         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5496                 return;
5497         if (wpa_s->p2p_long_listen > 0)
5498                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5499         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5500                 return; /* P2P module started a new operation */
5501         if (offchannel_pending_action_tx(wpa_s))
5502                 return;
5503         if (wpa_s->p2p_long_listen > 0) {
5504                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5505                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5506         } else {
5507                 /*
5508                  * When listen duration is over, stop listen & update p2p_state
5509                  * to IDLE.
5510                  */
5511                 p2p_stop_listen(wpa_s->global->p2p);
5512         }
5513 }
5514
5515
5516 /**
5517  * wpas_p2p_group_remove - Remove a P2P group
5518  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5519  * @ifname: Network interface name of the group interface or "*" to remove all
5520  *      groups
5521  * Returns: 0 on success, -1 on failure
5522  *
5523  * This function is used to remove a P2P group. This can be used to disconnect
5524  * from a group in which the local end is a P2P Client or to end a P2P Group in
5525  * case the local end is the Group Owner. If a virtual network interface was
5526  * created for this group, that interface will be removed. Otherwise, only the
5527  * configured P2P group network will be removed from the interface.
5528  */
5529 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5530 {
5531         struct wpa_global *global = wpa_s->global;
5532         struct wpa_supplicant *calling_wpa_s = wpa_s;
5533
5534         if (os_strcmp(ifname, "*") == 0) {
5535                 struct wpa_supplicant *prev;
5536                 wpa_s = global->ifaces;
5537                 while (wpa_s) {
5538                         prev = wpa_s;
5539                         wpa_s = wpa_s->next;
5540                         if (prev->p2p_group_interface !=
5541                             NOT_P2P_GROUP_INTERFACE ||
5542                             (prev->current_ssid &&
5543                              prev->current_ssid->p2p_group))
5544                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5545                 }
5546                 return 0;
5547         }
5548
5549         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5550                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5551                         break;
5552         }
5553
5554         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5555 }
5556
5557
5558 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5559 {
5560         unsigned int r;
5561
5562         if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5563                 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5564                 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5565                 int res;
5566
5567                 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5568                                                  &size, pref_freq_list);
5569                 if (!res && size > 0) {
5570                         i = 0;
5571                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5572                                                         pref_freq_list[i]) &&
5573                                i < size) {
5574                                 wpa_printf(MSG_DEBUG,
5575                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5576                                            i, pref_freq_list[i]);
5577                                 i++;
5578                         }
5579                         if (i != size) {
5580                                 freq = pref_freq_list[i];
5581                                 wpa_printf(MSG_DEBUG,
5582                                            "P2P: Using preferred_freq_list[%d]=%d",
5583                                            i, freq);
5584                         } else {
5585                                 wpa_printf(MSG_DEBUG,
5586                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5587                         }
5588                 } else {
5589                         wpa_printf(MSG_DEBUG,
5590                                    "P2P: No preferred frequency list available");
5591                 }
5592         }
5593
5594         if (freq == 2) {
5595                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5596                            "band");
5597                 if (wpa_s->best_24_freq > 0 &&
5598                     p2p_supported_freq_go(wpa_s->global->p2p,
5599                                           wpa_s->best_24_freq)) {
5600                         freq = wpa_s->best_24_freq;
5601                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5602                                    "channel: %d MHz", freq);
5603                 } else {
5604                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5605                                 return -1;
5606                         freq = 2412 + (r % 3) * 25;
5607                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5608                                    "channel: %d MHz", freq);
5609                 }
5610         }
5611
5612         if (freq == 5) {
5613                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5614                            "band");
5615                 if (wpa_s->best_5_freq > 0 &&
5616                     p2p_supported_freq_go(wpa_s->global->p2p,
5617                                        wpa_s->best_5_freq)) {
5618                         freq = wpa_s->best_5_freq;
5619                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5620                                    "channel: %d MHz", freq);
5621                 } else {
5622                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5623                                 return -1;
5624                         freq = 5180 + (r % 4) * 20;
5625                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5626                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5627                                            "5 GHz channel for P2P group");
5628                                 return -1;
5629                         }
5630                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5631                                    "channel: %d MHz", freq);
5632                 }
5633         }
5634
5635         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5636                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5637                     ieee80211_is_dfs(freq)) {
5638                         /*
5639                          * If freq is a DFS channel and DFS is offloaded to the
5640                          * driver, allow P2P GO to use it.
5641                          */
5642                         wpa_printf(MSG_DEBUG, "P2P: "
5643                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5644                                    __func__, freq);
5645                         return freq;
5646                 }
5647                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5648                            "(%u MHz) is not supported for P2P uses",
5649                            freq);
5650                 return -1;
5651         }
5652
5653         return freq;
5654 }
5655
5656
5657 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5658                                       const struct p2p_channels *channels,
5659                                       int freq)
5660 {
5661         if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5662             p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5663             freq_included(wpa_s, channels, freq))
5664                 return 1;
5665         return 0;
5666 }
5667
5668
5669 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5670                                             struct p2p_go_neg_results *params,
5671                                             const struct p2p_channels *channels)
5672 {
5673         unsigned int i, r;
5674
5675         /* first try some random selection of the social channels */
5676         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5677                 return;
5678
5679         for (i = 0; i < 3; i++) {
5680                 params->freq = 2412 + ((r + i) % 3) * 25;
5681                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5682                         goto out;
5683         }
5684
5685         /* try all other channels in operating class 81 */
5686         for (i = 0; i < 11; i++) {
5687                 params->freq = 2412 + i * 5;
5688
5689                 /* skip social channels; covered in the previous loop */
5690                 if (params->freq == 2412 ||
5691                     params->freq == 2437 ||
5692                     params->freq == 2462)
5693                         continue;
5694
5695                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5696                         goto out;
5697         }
5698
5699         /* try all channels in operating class 115 */
5700         for (i = 0; i < 4; i++) {
5701                 params->freq = 5180 + i * 20;
5702                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5703                     freq_included(wpa_s, channels, params->freq) &&
5704                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5705                         goto out;
5706         }
5707
5708         /* try all channels in operating class 124 */
5709         for (i = 0; i < 4; i++) {
5710                 params->freq = 5745 + i * 20;
5711                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5712                     freq_included(wpa_s, channels, params->freq) &&
5713                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5714                         goto out;
5715         }
5716
5717         /* try social channel class 180 channel 2 */
5718         params->freq = 58320 + 1 * 2160;
5719         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5720             freq_included(wpa_s, channels, params->freq) &&
5721             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5722                 goto out;
5723
5724         /* try all channels in reg. class 180 */
5725         for (i = 0; i < 4; i++) {
5726                 params->freq = 58320 + i * 2160;
5727                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5728                     freq_included(wpa_s, channels, params->freq) &&
5729                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5730                         goto out;
5731         }
5732
5733         params->freq = 0;
5734         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5735         return;
5736 out:
5737         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5738                    params->freq);
5739 }
5740
5741
5742 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5743                                    struct p2p_go_neg_results *params,
5744                                    int freq, int vht_center_freq2, int ht40,
5745                                    int vht, int max_oper_chwidth,
5746                                    const struct p2p_channels *channels)
5747 {
5748         struct wpa_used_freq_data *freqs;
5749         unsigned int cand;
5750         unsigned int num, i;
5751         int ignore_no_freqs = 0;
5752
5753         os_memset(params, 0, sizeof(*params));
5754         params->role_go = 1;
5755         params->ht40 = ht40;
5756         params->vht = vht;
5757         params->max_oper_chwidth = max_oper_chwidth;
5758         params->vht_center_freq2 = vht_center_freq2;
5759
5760         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5761                           sizeof(struct wpa_used_freq_data));
5762         if (!freqs)
5763                 return -1;
5764
5765         num = get_shared_radio_freqs_data(wpa_s, freqs,
5766                                           wpa_s->num_multichan_concurrent);
5767
5768         if (wpa_s->current_ssid &&
5769             wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5770             wpa_s->wpa_state == WPA_COMPLETED) {
5771                 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5772                            __func__);
5773
5774                 /*
5775                  * If the frequency selection is done for an active P2P GO that
5776                  * is not sharing a frequency, allow to select a new frequency
5777                  * even if there are no unused frequencies as we are about to
5778                  * move the P2P GO so its frequency can be re-used.
5779                  */
5780                 for (i = 0; i < num; i++) {
5781                         if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5782                             freqs[i].flags == 0) {
5783                                 ignore_no_freqs = 1;
5784                                 break;
5785                         }
5786                 }
5787         }
5788
5789         /* try using the forced freq */
5790         if (freq) {
5791                 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) {
5792                         wpa_printf(MSG_DEBUG,
5793                                    "P2P: Forced GO freq %d MHz not accepted",
5794                                    freq);
5795                         goto fail;
5796                 }
5797
5798                 for (i = 0; i < num; i++) {
5799                         if (freqs[i].freq == freq) {
5800                                 wpa_printf(MSG_DEBUG,
5801                                            "P2P: forced freq (%d MHz) is also shared",
5802                                            freq);
5803                                 params->freq = freq;
5804                                 goto success;
5805                         }
5806                 }
5807
5808                 if (!ignore_no_freqs &&
5809                     wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5810                         wpa_printf(MSG_DEBUG,
5811                                    "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5812                                    freq);
5813                         goto fail;
5814                 }
5815
5816                 wpa_printf(MSG_DEBUG,
5817                            "P2P: force GO freq (%d MHz) on a free channel",
5818                            freq);
5819                 params->freq = freq;
5820                 goto success;
5821         }
5822
5823         /* consider using one of the shared frequencies */
5824         if (num) {
5825                 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5826                 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5827                         wpa_printf(MSG_DEBUG,
5828                                    "P2P: Use shared freq (%d MHz) for GO",
5829                                    freq);
5830                         params->freq = cand;
5831                         goto success;
5832                 }
5833
5834                 /* try using one of the shared freqs */
5835                 for (i = 0; i < num; i++) {
5836                         if (wpas_p2p_supported_freq_go(wpa_s, channels,
5837                                                        freqs[i].freq)) {
5838                                 wpa_printf(MSG_DEBUG,
5839                                            "P2P: Use shared freq (%d MHz) for GO",
5840                                            freq);
5841                                 params->freq = freqs[i].freq;
5842                                 goto success;
5843                         }
5844                 }
5845         }
5846
5847         if (!ignore_no_freqs &&
5848             wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5849                 wpa_printf(MSG_DEBUG,
5850                            "P2P: Cannot force GO on any of the channels we are already using");
5851                 goto fail;
5852         }
5853
5854         /* try using the setting from the configuration file */
5855         if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5856             wpa_s->conf->p2p_oper_channel >= 1 &&
5857             wpa_s->conf->p2p_oper_channel <= 11 &&
5858             wpas_p2p_supported_freq_go(
5859                     wpa_s, channels,
5860                     2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5861                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5862                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5863                            "frequency %d MHz", params->freq);
5864                 goto success;
5865         }
5866
5867         if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5868              wpa_s->conf->p2p_oper_reg_class == 116 ||
5869              wpa_s->conf->p2p_oper_reg_class == 117 ||
5870              wpa_s->conf->p2p_oper_reg_class == 124 ||
5871              wpa_s->conf->p2p_oper_reg_class == 125 ||
5872              wpa_s->conf->p2p_oper_reg_class == 126 ||
5873              wpa_s->conf->p2p_oper_reg_class == 127) &&
5874             wpas_p2p_supported_freq_go(wpa_s, channels,
5875                                        5000 +
5876                                        5 * wpa_s->conf->p2p_oper_channel)) {
5877                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5878                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5879                            "frequency %d MHz", params->freq);
5880                 goto success;
5881         }
5882
5883         /* Try using best channels */
5884         if (wpa_s->conf->p2p_oper_channel == 0 &&
5885             wpa_s->best_overall_freq > 0 &&
5886             wpas_p2p_supported_freq_go(wpa_s, channels,
5887                                        wpa_s->best_overall_freq)) {
5888                 params->freq = wpa_s->best_overall_freq;
5889                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5890                            "channel %d MHz", params->freq);
5891                 goto success;
5892         }
5893
5894         if (wpa_s->conf->p2p_oper_channel == 0 &&
5895             wpa_s->best_24_freq > 0 &&
5896             wpas_p2p_supported_freq_go(wpa_s, channels,
5897                                        wpa_s->best_24_freq)) {
5898                 params->freq = wpa_s->best_24_freq;
5899                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5900                            "channel %d MHz", params->freq);
5901                 goto success;
5902         }
5903
5904         if (wpa_s->conf->p2p_oper_channel == 0 &&
5905             wpa_s->best_5_freq > 0 &&
5906             wpas_p2p_supported_freq_go(wpa_s, channels,
5907                                        wpa_s->best_5_freq)) {
5908                 params->freq = wpa_s->best_5_freq;
5909                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5910                            "channel %d MHz", params->freq);
5911                 goto success;
5912         }
5913
5914         /* try using preferred channels */
5915         cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
5916         if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5917                 params->freq = cand;
5918                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5919                            "channels", params->freq);
5920                 goto success;
5921         }
5922
5923         /* Try using one of the group common freqs */
5924         if (wpa_s->p2p_group_common_freqs) {
5925                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
5926                         cand = wpa_s->p2p_group_common_freqs[i];
5927                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5928                                 params->freq = cand;
5929                                 wpa_printf(MSG_DEBUG,
5930                                            "P2P: Use freq %d MHz common with the peer",
5931                                            params->freq);
5932                                 goto success;
5933                         }
5934                 }
5935         }
5936
5937         /* no preference, select some channel */
5938         wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
5939
5940         if (params->freq == 0) {
5941                 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
5942                 goto fail;
5943         }
5944
5945 success:
5946         os_free(freqs);
5947         return 0;
5948 fail:
5949         os_free(freqs);
5950         return -1;
5951 }
5952
5953
5954 static struct wpa_supplicant *
5955 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5956                          int go)
5957 {
5958         struct wpa_supplicant *group_wpa_s;
5959
5960         if (!wpas_p2p_create_iface(wpa_s)) {
5961                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5962                         "operations");
5963                 wpa_s->p2p_first_connection_timeout = 0;
5964                 return wpa_s;
5965         }
5966
5967         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5968                                          WPA_IF_P2P_CLIENT) < 0) {
5969                 wpa_msg_global(wpa_s, MSG_ERROR,
5970                                "P2P: Failed to add group interface");
5971                 return NULL;
5972         }
5973         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5974         if (group_wpa_s == NULL) {
5975                 wpa_msg_global(wpa_s, MSG_ERROR,
5976                                "P2P: Failed to initialize group interface");
5977                 wpas_p2p_remove_pending_group_interface(wpa_s);
5978                 return NULL;
5979         }
5980
5981         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5982                 group_wpa_s->ifname);
5983         group_wpa_s->p2p_first_connection_timeout = 0;
5984         return group_wpa_s;
5985 }
5986
5987
5988 /**
5989  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5990  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5991  * @persistent_group: Whether to create a persistent group
5992  * @freq: Frequency for the group or 0 to indicate no hardcoding
5993  * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80
5994  * @ht40: Start GO with 40 MHz channel width
5995  * @vht:  Start GO with VHT support
5996  * @vht_chwidth: channel bandwidth for GO operating with VHT support
5997  * Returns: 0 on success, -1 on failure
5998  *
5999  * This function creates a new P2P group with the local end as the Group Owner,
6000  * i.e., without using Group Owner Negotiation.
6001  */
6002 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
6003                        int freq, int vht_center_freq2, int ht40, int vht,
6004                        int max_oper_chwidth)
6005 {
6006         struct p2p_go_neg_results params;
6007
6008         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6009                 return -1;
6010
6011         os_free(wpa_s->global->add_psk);
6012         wpa_s->global->add_psk = NULL;
6013
6014         /* Make sure we are not running find during connection establishment */
6015         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6016         wpas_p2p_stop_find_oper(wpa_s);
6017
6018         freq = wpas_p2p_select_go_freq(wpa_s, freq);
6019         if (freq < 0)
6020                 return -1;
6021
6022         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6023                                     ht40, vht, max_oper_chwidth, NULL))
6024                 return -1;
6025         if (params.freq &&
6026             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
6027                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
6028                     ieee80211_is_dfs(params.freq)) {
6029                         /*
6030                          * If freq is a DFS channel and DFS is offloaded to the
6031                          * driver, allow P2P GO to use it.
6032                          */
6033                         wpa_printf(MSG_DEBUG,
6034                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
6035                                 __func__, params.freq);
6036                 } else {
6037                         wpa_printf(MSG_DEBUG,
6038                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
6039                                    params.freq);
6040                         return -1;
6041                 }
6042         }
6043         p2p_go_params(wpa_s->global->p2p, &params);
6044         params.persistent_group = persistent_group;
6045
6046         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6047         if (wpa_s == NULL)
6048                 return -1;
6049         wpas_start_wps_go(wpa_s, &params, 0);
6050
6051         return 0;
6052 }
6053
6054
6055 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6056                                  struct wpa_ssid *params, int addr_allocated,
6057                                  int freq, int force_scan)
6058 {
6059         struct wpa_ssid *ssid;
6060
6061         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6062         if (wpa_s == NULL)
6063                 return -1;
6064         if (force_scan)
6065                 os_get_reltime(&wpa_s->scan_min_time);
6066         wpa_s->p2p_last_4way_hs_fail = NULL;
6067
6068         wpa_supplicant_ap_deinit(wpa_s);
6069
6070         ssid = wpa_config_add_network(wpa_s->conf);
6071         if (ssid == NULL)
6072                 return -1;
6073         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
6074         wpa_config_set_network_defaults(ssid);
6075         ssid->temporary = 1;
6076         ssid->proto = WPA_PROTO_RSN;
6077         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
6078         ssid->group_cipher = WPA_CIPHER_CCMP;
6079         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6080         ssid->ssid = os_malloc(params->ssid_len);
6081         if (ssid->ssid == NULL) {
6082                 wpa_config_remove_network(wpa_s->conf, ssid->id);
6083                 return -1;
6084         }
6085         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6086         ssid->ssid_len = params->ssid_len;
6087         ssid->p2p_group = 1;
6088         ssid->export_keys = 1;
6089         if (params->psk_set) {
6090                 os_memcpy(ssid->psk, params->psk, 32);
6091                 ssid->psk_set = 1;
6092         }
6093         if (params->passphrase)
6094                 ssid->passphrase = os_strdup(params->passphrase);
6095
6096         wpa_s->show_group_started = 1;
6097         wpa_s->p2p_in_invitation = 1;
6098         wpa_s->p2p_invite_go_freq = freq;
6099         wpa_s->p2p_go_group_formation_completed = 0;
6100         wpa_s->global->p2p_group_formation = wpa_s;
6101
6102         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6103                              NULL);
6104         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6105                                wpas_p2p_group_formation_timeout,
6106                                wpa_s->parent, NULL);
6107         wpa_supplicant_select_network(wpa_s, ssid);
6108
6109         return 0;
6110 }
6111
6112
6113 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6114                                   struct wpa_ssid *ssid, int addr_allocated,
6115                                   int force_freq, int neg_freq,
6116                                   int vht_center_freq2, int ht40,
6117                                   int vht, int max_oper_chwidth,
6118                                   const struct p2p_channels *channels,
6119                                   int connection_timeout, int force_scan)
6120 {
6121         struct p2p_go_neg_results params;
6122         int go = 0, freq;
6123
6124         if (ssid->disabled != 2 || ssid->ssid == NULL)
6125                 return -1;
6126
6127         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6128             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6129                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6130                            "already running");
6131                 if (go == 0 &&
6132                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6133                                          wpa_s->parent, NULL)) {
6134                         /*
6135                          * This can happen if Invitation Response frame was lost
6136                          * and the peer (GO of a persistent group) tries to
6137                          * invite us again. Reschedule the timeout to avoid
6138                          * terminating the wait for the connection too early
6139                          * since we now know that the peer is still trying to
6140                          * invite us instead of having already started the GO.
6141                          */
6142                         wpa_printf(MSG_DEBUG,
6143                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6144                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6145                                                wpas_p2p_group_formation_timeout,
6146                                                wpa_s->parent, NULL);
6147                 }
6148                 return 0;
6149         }
6150
6151         os_free(wpa_s->global->add_psk);
6152         wpa_s->global->add_psk = NULL;
6153
6154         /* Make sure we are not running find during connection establishment */
6155         wpas_p2p_stop_find_oper(wpa_s);
6156
6157         wpa_s->p2p_fallback_to_go_neg = 0;
6158
6159         if (ssid->mode == WPAS_MODE_P2P_GO) {
6160                 if (force_freq > 0) {
6161                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6162                         if (freq < 0)
6163                                 return -1;
6164                 } else {
6165                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6166                         if (freq < 0 ||
6167                             (freq > 0 && !freq_included(wpa_s, channels, freq)))
6168                                 freq = 0;
6169                 }
6170         } else if (ssid->mode == WPAS_MODE_INFRA) {
6171                 freq = neg_freq;
6172                 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6173                         struct os_reltime now;
6174                         struct wpa_bss *bss =
6175                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6176
6177                         os_get_reltime(&now);
6178                         if (bss &&
6179                             !os_reltime_expired(&now, &bss->last_update, 5) &&
6180                             freq_included(wpa_s, channels, bss->freq))
6181                                 freq = bss->freq;
6182                         else
6183                                 freq = 0;
6184                 }
6185
6186                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6187                                              force_scan);
6188         } else {
6189                 return -1;
6190         }
6191
6192         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6193                                     ht40, vht, max_oper_chwidth, channels))
6194                 return -1;
6195
6196         params.role_go = 1;
6197         params.psk_set = ssid->psk_set;
6198         if (params.psk_set)
6199                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6200         if (ssid->passphrase) {
6201                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6202                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6203                                    "persistent group");
6204                         return -1;
6205                 }
6206                 os_strlcpy(params.passphrase, ssid->passphrase,
6207                            sizeof(params.passphrase));
6208         }
6209         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6210         params.ssid_len = ssid->ssid_len;
6211         params.persistent_group = 1;
6212
6213         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6214         if (wpa_s == NULL)
6215                 return -1;
6216
6217         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6218
6219         wpa_s->p2p_first_connection_timeout = connection_timeout;
6220         wpas_start_wps_go(wpa_s, &params, 0);
6221
6222         return 0;
6223 }
6224
6225
6226 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6227                                struct wpabuf *proberesp_ies)
6228 {
6229         struct wpa_supplicant *wpa_s = ctx;
6230         if (wpa_s->ap_iface) {
6231                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6232                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6233                         wpabuf_free(beacon_ies);
6234                         wpabuf_free(proberesp_ies);
6235                         return;
6236                 }
6237                 if (beacon_ies) {
6238                         wpabuf_free(hapd->p2p_beacon_ie);
6239                         hapd->p2p_beacon_ie = beacon_ies;
6240                 }
6241                 wpabuf_free(hapd->p2p_probe_resp_ie);
6242                 hapd->p2p_probe_resp_ie = proberesp_ies;
6243         } else {
6244                 wpabuf_free(beacon_ies);
6245                 wpabuf_free(proberesp_ies);
6246         }
6247         wpa_supplicant_ap_update_beacon(wpa_s);
6248 }
6249
6250
6251 static void wpas_p2p_idle_update(void *ctx, int idle)
6252 {
6253         struct wpa_supplicant *wpa_s = ctx;
6254         if (!wpa_s->ap_iface)
6255                 return;
6256         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6257         if (idle) {
6258                 if (wpa_s->global->p2p_fail_on_wps_complete &&
6259                     wpa_s->p2p_in_provisioning) {
6260                         wpas_p2p_grpform_fail_after_wps(wpa_s);
6261                         return;
6262                 }
6263                 wpas_p2p_set_group_idle_timeout(wpa_s);
6264         } else
6265                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6266 }
6267
6268
6269 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6270                                        struct wpa_ssid *ssid)
6271 {
6272         struct p2p_group *group;
6273         struct p2p_group_config *cfg;
6274
6275         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6276                 return NULL;
6277
6278         cfg = os_zalloc(sizeof(*cfg));
6279         if (cfg == NULL)
6280                 return NULL;
6281
6282         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6283                 cfg->persistent_group = 2;
6284         else if (ssid->p2p_persistent_group)
6285                 cfg->persistent_group = 1;
6286         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6287         if (wpa_s->max_stations &&
6288             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6289                 cfg->max_clients = wpa_s->max_stations;
6290         else
6291                 cfg->max_clients = wpa_s->conf->max_num_sta;
6292         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6293         cfg->ssid_len = ssid->ssid_len;
6294         cfg->freq = ssid->frequency;
6295         cfg->cb_ctx = wpa_s;
6296         cfg->ie_update = wpas_p2p_ie_update;
6297         cfg->idle_update = wpas_p2p_idle_update;
6298
6299         group = p2p_group_init(wpa_s->global->p2p, cfg);
6300         if (group == NULL)
6301                 os_free(cfg);
6302         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6303                 p2p_group_notif_formation_done(group);
6304         wpa_s->p2p_group = group;
6305         return group;
6306 }
6307
6308
6309 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6310                           int registrar)
6311 {
6312         struct wpa_ssid *ssid = wpa_s->current_ssid;
6313
6314         if (!wpa_s->p2p_in_provisioning) {
6315                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6316                            "provisioning not in progress");
6317                 return;
6318         }
6319
6320         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6321                 u8 go_dev_addr[ETH_ALEN];
6322                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6323                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6324                                           ssid->ssid_len);
6325                 /* Clear any stored provisioning info */
6326                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6327         }
6328
6329         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6330                              NULL);
6331         wpa_s->p2p_go_group_formation_completed = 1;
6332         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6333                 /*
6334                  * Use a separate timeout for initial data connection to
6335                  * complete to allow the group to be removed automatically if
6336                  * something goes wrong in this step before the P2P group idle
6337                  * timeout mechanism is taken into use.
6338                  */
6339                 wpa_dbg(wpa_s, MSG_DEBUG,
6340                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6341                         P2P_MAX_INITIAL_CONN_WAIT);
6342                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6343                                        wpas_p2p_group_formation_timeout,
6344                                        wpa_s->parent, NULL);
6345                 /* Complete group formation on successful data connection. */
6346                 wpa_s->p2p_go_group_formation_completed = 0;
6347         } else if (ssid) {
6348                 /*
6349                  * Use a separate timeout for initial data connection to
6350                  * complete to allow the group to be removed automatically if
6351                  * the client does not complete data connection successfully.
6352                  */
6353                 wpa_dbg(wpa_s, MSG_DEBUG,
6354                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6355                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6356                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6357                                        wpas_p2p_group_formation_timeout,
6358                                        wpa_s->parent, NULL);
6359                 /*
6360                  * Complete group formation on first successful data connection
6361                  */
6362                 wpa_s->p2p_go_group_formation_completed = 0;
6363         }
6364         if (wpa_s->global->p2p)
6365                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6366         wpas_group_formation_completed(wpa_s, 1, 0);
6367 }
6368
6369
6370 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6371                          struct wps_event_fail *fail)
6372 {
6373         if (!wpa_s->p2p_in_provisioning) {
6374                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6375                            "provisioning not in progress");
6376                 return;
6377         }
6378
6379         if (wpa_s->go_params) {
6380                 p2p_clear_provisioning_info(
6381                         wpa_s->global->p2p,
6382                         wpa_s->go_params->peer_device_addr);
6383         }
6384
6385         wpas_notify_p2p_wps_failed(wpa_s, fail);
6386
6387         if (wpa_s == wpa_s->global->p2p_group_formation) {
6388                 /*
6389                  * Allow some time for the failed WPS negotiation exchange to
6390                  * complete, but remove the group since group formation cannot
6391                  * succeed after provisioning failure.
6392                  */
6393                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6394                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6395                 eloop_deplete_timeout(0, 50000,
6396                                       wpas_p2p_group_formation_timeout,
6397                                       wpa_s->parent, NULL);
6398         }
6399 }
6400
6401
6402 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6403 {
6404         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6405             !wpa_s->p2p_in_provisioning)
6406                 return 0;
6407
6408         wpas_p2p_grpform_fail_after_wps(wpa_s);
6409
6410         return 1;
6411 }
6412
6413
6414 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6415                        const char *config_method,
6416                        enum wpas_p2p_prov_disc_use use,
6417                        struct p2ps_provision *p2ps_prov)
6418 {
6419         u16 config_methods;
6420
6421         wpa_s->global->pending_p2ps_group = 0;
6422         wpa_s->global->pending_p2ps_group_freq = 0;
6423         wpa_s->p2p_fallback_to_go_neg = 0;
6424         wpa_s->pending_pd_use = NORMAL_PD;
6425         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6426                 p2ps_prov->conncap = p2ps_group_capability(
6427                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6428                         &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6429
6430                 wpa_printf(MSG_DEBUG,
6431                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6432                            __func__, p2ps_prov->conncap,
6433                            p2ps_prov->adv_id, p2ps_prov->conncap,
6434                            p2ps_prov->status, p2ps_prov->info);
6435
6436                 config_methods = 0;
6437         } else if (os_strncmp(config_method, "display", 7) == 0)
6438                 config_methods = WPS_CONFIG_DISPLAY;
6439         else if (os_strncmp(config_method, "keypad", 6) == 0)
6440                 config_methods = WPS_CONFIG_KEYPAD;
6441         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6442                  os_strncmp(config_method, "pushbutton", 10) == 0)
6443                 config_methods = WPS_CONFIG_PUSHBUTTON;
6444         else {
6445                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6446                 os_free(p2ps_prov);
6447                 return -1;
6448         }
6449
6450         if (use == WPAS_P2P_PD_AUTO) {
6451                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6452                 wpa_s->pending_pd_config_methods = config_methods;
6453                 wpa_s->p2p_auto_pd = 1;
6454                 wpa_s->p2p_auto_join = 0;
6455                 wpa_s->pending_pd_before_join = 0;
6456                 wpa_s->auto_pd_scan_retry = 0;
6457                 wpas_p2p_stop_find(wpa_s);
6458                 wpa_s->p2p_join_scan_count = 0;
6459                 os_get_reltime(&wpa_s->p2p_auto_started);
6460                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6461                            wpa_s->p2p_auto_started.sec,
6462                            wpa_s->p2p_auto_started.usec);
6463                 wpas_p2p_join_scan(wpa_s, NULL);
6464                 return 0;
6465         }
6466
6467         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6468                 os_free(p2ps_prov);
6469                 return -1;
6470         }
6471
6472         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6473                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6474                                  0, 1);
6475 }
6476
6477
6478 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6479                               char *end)
6480 {
6481         return p2p_scan_result_text(ies, ies_len, buf, end);
6482 }
6483
6484
6485 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6486 {
6487         if (!offchannel_pending_action_tx(wpa_s))
6488                 return;
6489
6490         if (wpa_s->p2p_send_action_work)
6491                 wpas_p2p_free_send_action_work(wpa_s);
6492
6493         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6494                    "operation request");
6495         offchannel_clear_pending_action_tx(wpa_s);
6496 }
6497
6498
6499 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6500                   enum p2p_discovery_type type,
6501                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6502                   const u8 *dev_id, unsigned int search_delay,
6503                   u8 seek_cnt, const char **seek_string, int freq)
6504 {
6505         wpas_p2p_clear_pending_action_tx(wpa_s);
6506         wpa_s->p2p_long_listen = 0;
6507
6508         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6509             wpa_s->p2p_in_provisioning)
6510                 return -1;
6511
6512         wpa_supplicant_cancel_sched_scan(wpa_s);
6513
6514         return p2p_find(wpa_s->global->p2p, timeout, type,
6515                         num_req_dev_types, req_dev_types, dev_id,
6516                         search_delay, seek_cnt, seek_string, freq);
6517 }
6518
6519
6520 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6521                                             struct wpa_scan_results *scan_res)
6522 {
6523         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6524
6525         if (wpa_s->p2p_scan_work) {
6526                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6527                 wpa_s->p2p_scan_work = NULL;
6528                 radio_work_done(work);
6529         }
6530
6531         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6532                 return;
6533
6534         /*
6535          * Indicate that results have been processed so that the P2P module can
6536          * continue pending tasks.
6537          */
6538         p2p_scan_res_handled(wpa_s->global->p2p);
6539 }
6540
6541
6542 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6543 {
6544         wpas_p2p_clear_pending_action_tx(wpa_s);
6545         wpa_s->p2p_long_listen = 0;
6546         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6547         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6548
6549         if (wpa_s->global->p2p)
6550                 p2p_stop_find(wpa_s->global->p2p);
6551
6552         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6553                 wpa_printf(MSG_DEBUG,
6554                            "P2P: Do not consider the scan results after stop_find");
6555                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6556         }
6557 }
6558
6559
6560 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6561 {
6562         wpas_p2p_stop_find_oper(wpa_s);
6563         if (!wpa_s->global->pending_group_iface_for_p2ps)
6564                 wpas_p2p_remove_pending_group_interface(wpa_s);
6565 }
6566
6567
6568 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6569 {
6570         struct wpa_supplicant *wpa_s = eloop_ctx;
6571         wpa_s->p2p_long_listen = 0;
6572 }
6573
6574
6575 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6576 {
6577         int res;
6578
6579         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6580                 return -1;
6581
6582         wpa_supplicant_cancel_sched_scan(wpa_s);
6583         wpas_p2p_clear_pending_action_tx(wpa_s);
6584
6585         if (timeout == 0) {
6586                 /*
6587                  * This is a request for unlimited Listen state. However, at
6588                  * least for now, this is mapped to a Listen state for one
6589                  * hour.
6590                  */
6591                 timeout = 3600;
6592         }
6593         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6594         wpa_s->p2p_long_listen = 0;
6595
6596         /*
6597          * Stop previous find/listen operation to avoid trying to request a new
6598          * remain-on-channel operation while the driver is still running the
6599          * previous one.
6600          */
6601         if (wpa_s->global->p2p)
6602                 p2p_stop_find(wpa_s->global->p2p);
6603
6604         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6605         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6606                 wpa_s->p2p_long_listen = timeout * 1000;
6607                 eloop_register_timeout(timeout, 0,
6608                                        wpas_p2p_long_listen_timeout,
6609                                        wpa_s, NULL);
6610         }
6611
6612         return res;
6613 }
6614
6615
6616 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6617                           u8 *buf, size_t len, int p2p_group)
6618 {
6619         struct wpabuf *p2p_ie;
6620         int ret;
6621
6622         if (wpa_s->global->p2p_disabled)
6623                 return -1;
6624         /*
6625          * Advertize mandatory cross connection capability even on
6626          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6627          */
6628         if (wpa_s->conf->p2p_disabled && p2p_group)
6629                 return -1;
6630         if (wpa_s->global->p2p == NULL)
6631                 return -1;
6632         if (bss == NULL)
6633                 return -1;
6634
6635         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6636         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6637                                p2p_group, p2p_ie);
6638         wpabuf_free(p2p_ie);
6639
6640         return ret;
6641 }
6642
6643
6644 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6645                           const u8 *dst, const u8 *bssid,
6646                           const u8 *ie, size_t ie_len,
6647                           unsigned int rx_freq, int ssi_signal)
6648 {
6649         if (wpa_s->global->p2p_disabled)
6650                 return 0;
6651         if (wpa_s->global->p2p == NULL)
6652                 return 0;
6653
6654         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6655                                  ie, ie_len, rx_freq)) {
6656         case P2P_PREQ_NOT_P2P:
6657                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6658                                  ssi_signal);
6659                 /* fall through */
6660         case P2P_PREQ_MALFORMED:
6661         case P2P_PREQ_NOT_LISTEN:
6662         case P2P_PREQ_NOT_PROCESSED:
6663         default: /* make gcc happy */
6664                 return 0;
6665         case P2P_PREQ_PROCESSED:
6666                 return 1;
6667         }
6668 }
6669
6670
6671 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6672                         const u8 *sa, const u8 *bssid,
6673                         u8 category, const u8 *data, size_t len, int freq)
6674 {
6675         if (wpa_s->global->p2p_disabled)
6676                 return;
6677         if (wpa_s->global->p2p == NULL)
6678                 return;
6679
6680         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6681                       freq);
6682 }
6683
6684
6685 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6686 {
6687         if (wpa_s->global->p2p_disabled)
6688                 return;
6689         if (wpa_s->global->p2p == NULL)
6690                 return;
6691
6692         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6693 }
6694
6695
6696 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6697 {
6698         p2p_group_deinit(wpa_s->p2p_group);
6699         wpa_s->p2p_group = NULL;
6700
6701         wpa_s->ap_configured_cb = NULL;
6702         wpa_s->ap_configured_cb_ctx = NULL;
6703         wpa_s->ap_configured_cb_data = NULL;
6704         wpa_s->connect_without_scan = NULL;
6705 }
6706
6707
6708 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6709 {
6710         wpa_s->p2p_long_listen = 0;
6711
6712         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6713                 return -1;
6714
6715         return p2p_reject(wpa_s->global->p2p, addr);
6716 }
6717
6718
6719 /* Invite to reinvoke a persistent group */
6720 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6721                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6722                     int vht_center_freq2, int ht40, int vht, int max_chwidth,
6723                     int pref_freq)
6724 {
6725         enum p2p_invite_role role;
6726         u8 *bssid = NULL;
6727         int force_freq = 0;
6728         int res;
6729         int no_pref_freq_given = pref_freq == 0;
6730         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6731
6732         wpa_s->global->p2p_invite_group = NULL;
6733         if (peer_addr)
6734                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6735         else
6736                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6737
6738         wpa_s->p2p_persistent_go_freq = freq;
6739         wpa_s->p2p_go_ht40 = !!ht40;
6740         wpa_s->p2p_go_vht = !!vht;
6741         wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
6742         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
6743         if (ssid->mode == WPAS_MODE_P2P_GO) {
6744                 role = P2P_INVITE_ROLE_GO;
6745                 if (peer_addr == NULL) {
6746                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6747                                    "address in invitation command");
6748                         return -1;
6749                 }
6750                 if (wpas_p2p_create_iface(wpa_s)) {
6751                         if (wpas_p2p_add_group_interface(wpa_s,
6752                                                          WPA_IF_P2P_GO) < 0) {
6753                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6754                                            "allocate a new interface for the "
6755                                            "group");
6756                                 return -1;
6757                         }
6758                         bssid = wpa_s->pending_interface_addr;
6759                 } else
6760                         bssid = wpa_s->own_addr;
6761         } else {
6762                 role = P2P_INVITE_ROLE_CLIENT;
6763                 peer_addr = ssid->bssid;
6764         }
6765         wpa_s->pending_invite_ssid_id = ssid->id;
6766
6767         size = P2P_MAX_PREF_CHANNELS;
6768         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6769                                    role == P2P_INVITE_ROLE_GO,
6770                                    pref_freq_list, &size);
6771         if (res)
6772                 return res;
6773
6774         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6775                 return -1;
6776
6777         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6778
6779         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6780             no_pref_freq_given && pref_freq > 0 &&
6781             wpa_s->num_multichan_concurrent > 1 &&
6782             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6783                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6784                            pref_freq);
6785                 pref_freq = 0;
6786         }
6787
6788         /*
6789          * Stop any find/listen operations before invitation and possibly
6790          * connection establishment.
6791          */
6792         wpas_p2p_stop_find_oper(wpa_s);
6793
6794         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6795                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6796                           1, pref_freq, -1);
6797 }
6798
6799
6800 /* Invite to join an active group */
6801 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6802                           const u8 *peer_addr, const u8 *go_dev_addr)
6803 {
6804         struct wpa_global *global = wpa_s->global;
6805         enum p2p_invite_role role;
6806         u8 *bssid = NULL;
6807         struct wpa_ssid *ssid;
6808         int persistent;
6809         int freq = 0, force_freq = 0, pref_freq = 0;
6810         int res;
6811         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6812
6813         wpa_s->p2p_persistent_go_freq = 0;
6814         wpa_s->p2p_go_ht40 = 0;
6815         wpa_s->p2p_go_vht = 0;
6816         wpa_s->p2p_go_vht_center_freq2 = 0;
6817         wpa_s->p2p_go_max_oper_chwidth = 0;
6818
6819         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6820                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6821                         break;
6822         }
6823         if (wpa_s == NULL) {
6824                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6825                 return -1;
6826         }
6827
6828         ssid = wpa_s->current_ssid;
6829         if (ssid == NULL) {
6830                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6831                            "invitation");
6832                 return -1;
6833         }
6834
6835         wpa_s->global->p2p_invite_group = wpa_s;
6836         persistent = ssid->p2p_persistent_group &&
6837                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6838                                         ssid->ssid, ssid->ssid_len);
6839
6840         if (ssid->mode == WPAS_MODE_P2P_GO) {
6841                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6842                 bssid = wpa_s->own_addr;
6843                 if (go_dev_addr == NULL)
6844                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6845                 freq = ssid->frequency;
6846         } else {
6847                 role = P2P_INVITE_ROLE_CLIENT;
6848                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6849                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6850                                    "invite to current group");
6851                         return -1;
6852                 }
6853                 bssid = wpa_s->bssid;
6854                 if (go_dev_addr == NULL &&
6855                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6856                         go_dev_addr = wpa_s->go_dev_addr;
6857                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6858                         (int) wpa_s->assoc_freq;
6859         }
6860         wpa_s->parent->pending_invite_ssid_id = -1;
6861
6862         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6863                 return -1;
6864
6865         size = P2P_MAX_PREF_CHANNELS;
6866         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6867                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
6868                                    pref_freq_list, &size);
6869         if (res)
6870                 return res;
6871         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6872
6873         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6874                           ssid->ssid, ssid->ssid_len, force_freq,
6875                           go_dev_addr, persistent, pref_freq, -1);
6876 }
6877
6878
6879 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6880 {
6881         struct wpa_ssid *ssid = wpa_s->current_ssid;
6882         u8 go_dev_addr[ETH_ALEN];
6883         int network_id = -1;
6884         int persistent;
6885         int freq;
6886         u8 ip[3 * 4];
6887         char ip_addr[100];
6888
6889         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6890                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6891                                      wpa_s->parent, NULL);
6892         }
6893
6894         if (!wpa_s->show_group_started || !ssid)
6895                 return;
6896
6897         wpa_s->show_group_started = 0;
6898         if (!wpa_s->p2p_go_group_formation_completed &&
6899             wpa_s->global->p2p_group_formation == wpa_s) {
6900                 wpa_dbg(wpa_s, MSG_DEBUG,
6901                         "P2P: Marking group formation completed on client on data connection");
6902                 wpa_s->p2p_go_group_formation_completed = 1;
6903                 wpa_s->global->p2p_group_formation = NULL;
6904                 wpa_s->p2p_in_provisioning = 0;
6905                 wpa_s->p2p_in_invitation = 0;
6906         }
6907
6908         os_memset(go_dev_addr, 0, ETH_ALEN);
6909         if (ssid->bssid_set)
6910                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6911         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6912                                                ssid->ssid_len);
6913         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6914
6915         if (wpa_s->global->p2p_group_formation == wpa_s)
6916                 wpa_s->global->p2p_group_formation = NULL;
6917
6918         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6919                 (int) wpa_s->assoc_freq;
6920
6921         ip_addr[0] = '\0';
6922         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6923                 int res;
6924
6925                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6926                                   " ip_addr=%u.%u.%u.%u "
6927                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6928                                   ip[0], ip[1], ip[2], ip[3],
6929                                   ip[4], ip[5], ip[6], ip[7],
6930                                   ip[8], ip[9], ip[10], ip[11]);
6931                 if (os_snprintf_error(sizeof(ip_addr), res))
6932                         ip_addr[0] = '\0';
6933         }
6934
6935         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6936                                ssid->passphrase == NULL && ssid->psk_set ?
6937                                ssid->psk : NULL,
6938                                ssid->passphrase, go_dev_addr, persistent,
6939                                ip_addr);
6940
6941         if (persistent)
6942                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6943                                                              ssid, go_dev_addr);
6944         if (network_id < 0)
6945                 network_id = ssid->id;
6946         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6947 }
6948
6949
6950 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6951                           u32 interval1, u32 duration2, u32 interval2)
6952 {
6953         int ret;
6954
6955         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6956                 return -1;
6957
6958         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6959             wpa_s->current_ssid == NULL ||
6960             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6961                 return -1;
6962
6963         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6964                                wpa_s->own_addr, wpa_s->assoc_freq,
6965                                duration1, interval1, duration2, interval2);
6966         if (ret == 0)
6967                 wpa_s->waiting_presence_resp = 1;
6968
6969         return ret;
6970 }
6971
6972
6973 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6974                         unsigned int interval)
6975 {
6976         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6977                 return -1;
6978
6979         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6980 }
6981
6982
6983 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6984 {
6985         if (wpa_s->current_ssid == NULL) {
6986                 /*
6987                  * current_ssid can be cleared when P2P client interface gets
6988                  * disconnected, so assume this interface was used as P2P
6989                  * client.
6990                  */
6991                 return 1;
6992         }
6993         return wpa_s->current_ssid->p2p_group &&
6994                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6995 }
6996
6997
6998 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6999 {
7000         struct wpa_supplicant *wpa_s = eloop_ctx;
7001
7002         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
7003                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
7004                            "disabled");
7005                 return;
7006         }
7007
7008         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
7009                    "group");
7010         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7011 }
7012
7013
7014 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7015 {
7016         int timeout;
7017
7018         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7019                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7020
7021         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7022                 return;
7023
7024         timeout = wpa_s->conf->p2p_group_idle;
7025         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7026             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7027             timeout = P2P_MAX_CLIENT_IDLE;
7028
7029         if (timeout == 0)
7030                 return;
7031
7032         if (timeout < 0) {
7033                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7034                         timeout = 0; /* special client mode no-timeout */
7035                 else
7036                         return;
7037         }
7038
7039         if (wpa_s->p2p_in_provisioning) {
7040                 /*
7041                  * Use the normal group formation timeout during the
7042                  * provisioning phase to avoid terminating this process too
7043                  * early due to group idle timeout.
7044                  */
7045                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7046                            "during provisioning");
7047                 return;
7048         }
7049
7050         if (wpa_s->show_group_started) {
7051                 /*
7052                  * Use the normal group formation timeout between the end of
7053                  * the provisioning phase and completion of 4-way handshake to
7054                  * avoid terminating this process too early due to group idle
7055                  * timeout.
7056                  */
7057                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7058                            "while waiting for initial 4-way handshake to "
7059                            "complete");
7060                 return;
7061         }
7062
7063         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7064                    timeout);
7065         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7066                                wpa_s, NULL);
7067 }
7068
7069
7070 /* Returns 1 if the interface was removed */
7071 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7072                           u16 reason_code, const u8 *ie, size_t ie_len,
7073                           int locally_generated)
7074 {
7075         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7076                 return 0;
7077
7078         if (!locally_generated)
7079                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7080                                  ie_len);
7081
7082         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7083             wpa_s->current_ssid &&
7084             wpa_s->current_ssid->p2p_group &&
7085             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7086                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7087                            "session is ending");
7088                 if (wpas_p2p_group_delete(wpa_s,
7089                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7090                     > 0)
7091                         return 1;
7092         }
7093
7094         return 0;
7095 }
7096
7097
7098 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7099                              u16 reason_code, const u8 *ie, size_t ie_len,
7100                              int locally_generated)
7101 {
7102         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7103                 return;
7104
7105         if (!locally_generated)
7106                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7107                                    ie_len);
7108 }
7109
7110
7111 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7112 {
7113         struct p2p_data *p2p = wpa_s->global->p2p;
7114
7115         if (p2p == NULL)
7116                 return;
7117
7118         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7119                 return;
7120
7121         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7122                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7123
7124         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7125                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7126
7127         if (wpa_s->wps &&
7128             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7129                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7130
7131         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7132                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7133
7134         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7135                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7136                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7137                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7138                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7139         }
7140
7141         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7142                 p2p_set_sec_dev_types(p2p,
7143                                       (void *) wpa_s->conf->sec_device_type,
7144                                       wpa_s->conf->num_sec_device_types);
7145
7146         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7147                 int i;
7148                 p2p_remove_wps_vendor_extensions(p2p);
7149                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7150                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7151                                 continue;
7152                         p2p_add_wps_vendor_extension(
7153                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
7154                 }
7155         }
7156
7157         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7158             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7159                 char country[3];
7160                 country[0] = wpa_s->conf->country[0];
7161                 country[1] = wpa_s->conf->country[1];
7162                 country[2] = 0x04;
7163                 p2p_set_country(p2p, country);
7164         }
7165
7166         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7167                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7168                                      wpa_s->conf->p2p_ssid_postfix ?
7169                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7170                                      0);
7171         }
7172
7173         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7174                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7175
7176         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7177                 u8 reg_class, channel;
7178                 int ret;
7179                 unsigned int r;
7180                 u8 channel_forced;
7181
7182                 if (wpa_s->conf->p2p_listen_reg_class &&
7183                     wpa_s->conf->p2p_listen_channel) {
7184                         reg_class = wpa_s->conf->p2p_listen_reg_class;
7185                         channel = wpa_s->conf->p2p_listen_channel;
7186                         channel_forced = 1;
7187                 } else {
7188                         reg_class = 81;
7189                         /*
7190                          * Pick one of the social channels randomly as the
7191                          * listen channel.
7192                          */
7193                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7194                                 channel = 1;
7195                         else
7196                                 channel = 1 + (r % 3) * 5;
7197                         channel_forced = 0;
7198                 }
7199                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7200                                              channel_forced);
7201                 if (ret)
7202                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7203                                    "failed: %d", ret);
7204         }
7205         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7206                 u8 op_reg_class, op_channel, cfg_op_channel;
7207                 int ret = 0;
7208                 unsigned int r;
7209                 if (wpa_s->conf->p2p_oper_reg_class &&
7210                     wpa_s->conf->p2p_oper_channel) {
7211                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7212                         op_channel = wpa_s->conf->p2p_oper_channel;
7213                         cfg_op_channel = 1;
7214                 } else {
7215                         op_reg_class = 81;
7216                         /*
7217                          * Use random operation channel from (1, 6, 11)
7218                          *if no other preference is indicated.
7219                          */
7220                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7221                                 op_channel = 1;
7222                         else
7223                                 op_channel = 1 + (r % 3) * 5;
7224                         cfg_op_channel = 0;
7225                 }
7226                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7227                                            cfg_op_channel);
7228                 if (ret)
7229                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7230                                    "failed: %d", ret);
7231         }
7232
7233         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7234                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7235                                       wpa_s->conf->p2p_pref_chan) < 0) {
7236                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7237                                    "update failed");
7238                 }
7239
7240                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7241                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7242                                    "update failed");
7243                 }
7244         }
7245
7246         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7247                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7248 }
7249
7250
7251 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7252                      int duration)
7253 {
7254         if (!wpa_s->ap_iface)
7255                 return -1;
7256         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7257                                    duration);
7258 }
7259
7260
7261 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7262 {
7263         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7264                 return -1;
7265
7266         wpa_s->global->cross_connection = enabled;
7267         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7268
7269         if (!enabled) {
7270                 struct wpa_supplicant *iface;
7271
7272                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7273                 {
7274                         if (iface->cross_connect_enabled == 0)
7275                                 continue;
7276
7277                         iface->cross_connect_enabled = 0;
7278                         iface->cross_connect_in_use = 0;
7279                         wpa_msg_global(iface->parent, MSG_INFO,
7280                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7281                                        iface->ifname,
7282                                        iface->cross_connect_uplink);
7283                 }
7284         }
7285
7286         return 0;
7287 }
7288
7289
7290 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7291 {
7292         struct wpa_supplicant *iface;
7293
7294         if (!uplink->global->cross_connection)
7295                 return;
7296
7297         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7298                 if (!iface->cross_connect_enabled)
7299                         continue;
7300                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7301                     0)
7302                         continue;
7303                 if (iface->ap_iface == NULL)
7304                         continue;
7305                 if (iface->cross_connect_in_use)
7306                         continue;
7307
7308                 iface->cross_connect_in_use = 1;
7309                 wpa_msg_global(iface->parent, MSG_INFO,
7310                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7311                                iface->ifname, iface->cross_connect_uplink);
7312         }
7313 }
7314
7315
7316 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7317 {
7318         struct wpa_supplicant *iface;
7319
7320         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7321                 if (!iface->cross_connect_enabled)
7322                         continue;
7323                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7324                     0)
7325                         continue;
7326                 if (!iface->cross_connect_in_use)
7327                         continue;
7328
7329                 wpa_msg_global(iface->parent, MSG_INFO,
7330                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7331                                iface->ifname, iface->cross_connect_uplink);
7332                 iface->cross_connect_in_use = 0;
7333         }
7334 }
7335
7336
7337 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7338 {
7339         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7340             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7341             wpa_s->cross_connect_disallowed)
7342                 wpas_p2p_disable_cross_connect(wpa_s);
7343         else
7344                 wpas_p2p_enable_cross_connect(wpa_s);
7345         if (!wpa_s->ap_iface &&
7346             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7347                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7348 }
7349
7350
7351 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7352 {
7353         wpas_p2p_disable_cross_connect(wpa_s);
7354         if (!wpa_s->ap_iface &&
7355             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7356                                          wpa_s, NULL))
7357                 wpas_p2p_set_group_idle_timeout(wpa_s);
7358 }
7359
7360
7361 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7362 {
7363         struct wpa_supplicant *iface;
7364
7365         if (!wpa_s->global->cross_connection)
7366                 return;
7367
7368         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7369                 if (iface == wpa_s)
7370                         continue;
7371                 if (iface->drv_flags &
7372                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7373                         continue;
7374                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7375                     iface != wpa_s->parent)
7376                         continue;
7377
7378                 wpa_s->cross_connect_enabled = 1;
7379                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7380                            sizeof(wpa_s->cross_connect_uplink));
7381                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7382                            "%s to %s whenever uplink is available",
7383                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7384
7385                 if (iface->ap_iface || iface->current_ssid == NULL ||
7386                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7387                     iface->cross_connect_disallowed ||
7388                     iface->wpa_state != WPA_COMPLETED)
7389                         break;
7390
7391                 wpa_s->cross_connect_in_use = 1;
7392                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7393                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7394                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7395                 break;
7396         }
7397 }
7398
7399
7400 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7401 {
7402         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7403             !wpa_s->p2p_in_provisioning)
7404                 return 0; /* not P2P client operation */
7405
7406         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7407                    "session overlap");
7408         if (wpa_s != wpa_s->parent)
7409                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
7410         wpas_p2p_group_formation_failed(wpa_s, 0);
7411         return 1;
7412 }
7413
7414
7415 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7416 {
7417         struct wpa_supplicant *wpa_s = eloop_ctx;
7418         wpas_p2p_notif_pbc_overlap(wpa_s);
7419 }
7420
7421
7422 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7423                                   enum wpas_p2p_channel_update_trig trig)
7424 {
7425         struct p2p_channels chan, cli_chan;
7426         struct wpa_used_freq_data *freqs = NULL;
7427         unsigned int num = wpa_s->num_multichan_concurrent;
7428
7429         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7430                 return;
7431
7432         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7433         if (!freqs)
7434                 return;
7435
7436         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7437
7438         os_memset(&chan, 0, sizeof(chan));
7439         os_memset(&cli_chan, 0, sizeof(cli_chan));
7440         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7441                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7442                            "channel list");
7443                 return;
7444         }
7445
7446         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7447
7448         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7449
7450         /*
7451          * The used frequencies map changed, so it is possible that a GO is
7452          * using a channel that is no longer valid for P2P use. It is also
7453          * possible that due to policy consideration, it would be preferable to
7454          * move it to a frequency already used by other station interfaces.
7455          */
7456         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7457
7458         os_free(freqs);
7459 }
7460
7461
7462 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7463                                      struct wpa_scan_results *scan_res)
7464 {
7465         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7466 }
7467
7468
7469 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7470 {
7471         struct wpa_global *global = wpa_s->global;
7472         int found = 0;
7473         const u8 *peer;
7474
7475         if (global->p2p == NULL)
7476                 return -1;
7477
7478         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7479
7480         if (wpa_s->pending_interface_name[0] &&
7481             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7482                 found = 1;
7483
7484         peer = p2p_get_go_neg_peer(global->p2p);
7485         if (peer) {
7486                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7487                            MACSTR, MAC2STR(peer));
7488                 p2p_unauthorize(global->p2p, peer);
7489                 found = 1;
7490         }
7491
7492         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7493                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7494                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7495                 found = 1;
7496         }
7497
7498         if (wpa_s->pending_pd_before_join) {
7499                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7500                 wpa_s->pending_pd_before_join = 0;
7501                 found = 1;
7502         }
7503
7504         wpas_p2p_stop_find(wpa_s);
7505
7506         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7507                 if (wpa_s == global->p2p_group_formation &&
7508                     (wpa_s->p2p_in_provisioning ||
7509                      wpa_s->parent->pending_interface_type ==
7510                      WPA_IF_P2P_CLIENT)) {
7511                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7512                                    "formation found - cancelling",
7513                                    wpa_s->ifname);
7514                         found = 1;
7515                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7516                                              wpa_s->parent, NULL);
7517                         if (wpa_s->p2p_in_provisioning) {
7518                                 wpas_group_formation_completed(wpa_s, 0, 0);
7519                                 break;
7520                         }
7521                         wpas_p2p_group_delete(wpa_s,
7522                                               P2P_GROUP_REMOVAL_REQUESTED);
7523                         break;
7524                 } else if (wpa_s->p2p_in_invitation) {
7525                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7526                                    wpa_s->ifname);
7527                         found = 1;
7528                         wpas_p2p_group_formation_failed(wpa_s, 0);
7529                         break;
7530                 }
7531         }
7532
7533         if (!found) {
7534                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7535                 return -1;
7536         }
7537
7538         return 0;
7539 }
7540
7541
7542 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7543 {
7544         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7545                 return;
7546
7547         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7548                    "being available anymore");
7549         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7550 }
7551
7552
7553 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7554                                    int freq_24, int freq_5, int freq_overall)
7555 {
7556         struct p2p_data *p2p = wpa_s->global->p2p;
7557         if (p2p == NULL)
7558                 return;
7559         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7560 }
7561
7562
7563 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7564 {
7565         u8 peer[ETH_ALEN];
7566         struct p2p_data *p2p = wpa_s->global->p2p;
7567
7568         if (p2p == NULL)
7569                 return -1;
7570
7571         if (hwaddr_aton(addr, peer))
7572                 return -1;
7573
7574         return p2p_unauthorize(p2p, peer);
7575 }
7576
7577
7578 /**
7579  * wpas_p2p_disconnect - Disconnect from a P2P Group
7580  * @wpa_s: Pointer to wpa_supplicant data
7581  * Returns: 0 on success, -1 on failure
7582  *
7583  * This can be used to disconnect from a group in which the local end is a P2P
7584  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7585  * virtual network interface was created for this group, that interface will be
7586  * removed. Otherwise, only the configured P2P group network will be removed
7587  * from the interface.
7588  */
7589 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7590 {
7591
7592         if (wpa_s == NULL)
7593                 return -1;
7594
7595         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7596                 -1 : 0;
7597 }
7598
7599
7600 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7601 {
7602         int ret;
7603
7604         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7605                 return 0;
7606
7607         ret = p2p_in_progress(wpa_s->global->p2p);
7608         if (ret == 0) {
7609                 /*
7610                  * Check whether there is an ongoing WPS provisioning step (or
7611                  * other parts of group formation) on another interface since
7612                  * p2p_in_progress() does not report this to avoid issues for
7613                  * scans during such provisioning step.
7614                  */
7615                 if (wpa_s->global->p2p_group_formation &&
7616                     wpa_s->global->p2p_group_formation != wpa_s) {
7617                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7618                                 "in group formation",
7619                                 wpa_s->global->p2p_group_formation->ifname);
7620                         ret = 1;
7621                 }
7622         }
7623
7624         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7625                 struct os_reltime now;
7626                 os_get_reltime(&now);
7627                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7628                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7629                         /* Wait for the first client has expired */
7630                         wpa_s->global->p2p_go_wait_client.sec = 0;
7631                 } else {
7632                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7633                         ret = 1;
7634                 }
7635         }
7636
7637         return ret;
7638 }
7639
7640
7641 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7642                               struct wpa_ssid *ssid)
7643 {
7644         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7645             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7646                                  wpa_s->parent, NULL) > 0) {
7647                 /**
7648                  * Remove the network by scheduling the group formation
7649                  * timeout to happen immediately. The teardown code
7650                  * needs to be scheduled to run asynch later so that we
7651                  * don't delete data from under ourselves unexpectedly.
7652                  * Calling wpas_p2p_group_formation_timeout directly
7653                  * causes a series of crashes in WPS failure scenarios.
7654                  */
7655                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7656                            "P2P group network getting removed");
7657                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7658                                        wpa_s->parent, NULL);
7659         }
7660 }
7661
7662
7663 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7664                                           const u8 *addr, const u8 *ssid,
7665                                           size_t ssid_len)
7666 {
7667         struct wpa_ssid *s;
7668         size_t i;
7669
7670         for (s = wpa_s->conf->ssid; s; s = s->next) {
7671                 if (s->disabled != 2)
7672                         continue;
7673                 if (ssid &&
7674                     (ssid_len != s->ssid_len ||
7675                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7676                         continue;
7677                 if (addr == NULL) {
7678                         if (s->mode == WPAS_MODE_P2P_GO)
7679                                 return s;
7680                         continue;
7681                 }
7682                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7683                         return s; /* peer is GO in the persistent group */
7684                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7685                         continue;
7686                 for (i = 0; i < s->num_p2p_clients; i++) {
7687                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7688                                       addr, ETH_ALEN) == 0)
7689                                 return s; /* peer is P2P client in persistent
7690                                            * group */
7691                 }
7692         }
7693
7694         return NULL;
7695 }
7696
7697
7698 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7699                                        const u8 *addr)
7700 {
7701         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7702                                  wpa_s->parent, NULL) > 0) {
7703                 /*
7704                  * This can happen if WPS provisioning step is not terminated
7705                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7706                  * peer was able to connect, there is no need to time out group
7707                  * formation after this, though. In addition, this is used with
7708                  * the initial connection wait on the GO as a separate formation
7709                  * timeout and as such, expected to be hit after the initial WPS
7710                  * provisioning step.
7711                  */
7712                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7713
7714                 if (!wpa_s->p2p_go_group_formation_completed &&
7715                     !wpa_s->group_formation_reported) {
7716                         /*
7717                          * GO has not yet notified group formation success since
7718                          * the WPS step was not completed cleanly. Do that
7719                          * notification now since the P2P Client was able to
7720                          * connect and as such, must have received the
7721                          * credential from the WPS step.
7722                          */
7723                         if (wpa_s->global->p2p)
7724                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7725                         wpas_group_formation_completed(wpa_s, 1, 0);
7726                 }
7727         }
7728         if (!wpa_s->p2p_go_group_formation_completed) {
7729                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7730                 wpa_s->p2p_go_group_formation_completed = 1;
7731                 wpa_s->global->p2p_group_formation = NULL;
7732                 wpa_s->p2p_in_provisioning = 0;
7733                 wpa_s->p2p_in_invitation = 0;
7734         }
7735         wpa_s->global->p2p_go_wait_client.sec = 0;
7736         if (addr == NULL)
7737                 return;
7738         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7739 }
7740
7741
7742 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7743                                        int group_added)
7744 {
7745         struct wpa_supplicant *group = wpa_s;
7746         int ret = 0;
7747
7748         if (wpa_s->global->p2p_group_formation)
7749                 group = wpa_s->global->p2p_group_formation;
7750         wpa_s = wpa_s->global->p2p_init_wpa_s;
7751         offchannel_send_action_done(wpa_s);
7752         if (group_added)
7753                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7754         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7755         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7756                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7757                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7758                          wpa_s->p2p_go_vht_center_freq2,
7759                          wpa_s->p2p_persistent_id,
7760                          wpa_s->p2p_pd_before_go_neg,
7761                          wpa_s->p2p_go_ht40,
7762                          wpa_s->p2p_go_vht,
7763                          wpa_s->p2p_go_max_oper_chwidth);
7764         return ret;
7765 }
7766
7767
7768 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7769 {
7770         int res;
7771
7772         if (!wpa_s->p2p_fallback_to_go_neg ||
7773             wpa_s->p2p_in_provisioning <= 5)
7774                 return 0;
7775
7776         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7777                 return 0; /* peer operating as a GO */
7778
7779         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7780                 "fallback to GO Negotiation");
7781         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7782                        "reason=GO-not-found");
7783         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7784
7785         return res == 1 ? 2 : 1;
7786 }
7787
7788
7789 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7790 {
7791         struct wpa_supplicant *ifs;
7792
7793         if (wpa_s->wpa_state > WPA_SCANNING) {
7794                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7795                         "concurrent operation",
7796                         wpa_s->conf->p2p_search_delay);
7797                 return wpa_s->conf->p2p_search_delay;
7798         }
7799
7800         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7801                          radio_list) {
7802                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7803                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7804                                 "delay due to concurrent operation on "
7805                                 "interface %s",
7806                                 wpa_s->conf->p2p_search_delay,
7807                                 ifs->ifname);
7808                         return wpa_s->conf->p2p_search_delay;
7809                 }
7810         }
7811
7812         return 0;
7813 }
7814
7815
7816 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7817                                      struct wpa_ssid *s, const u8 *addr,
7818                                      int iface_addr)
7819 {
7820         struct psk_list_entry *psk, *tmp;
7821         int changed = 0;
7822
7823         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7824                               list) {
7825                 if ((iface_addr && !psk->p2p &&
7826                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7827                     (!iface_addr && psk->p2p &&
7828                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7829                         wpa_dbg(wpa_s, MSG_DEBUG,
7830                                 "P2P: Remove persistent group PSK list entry for "
7831                                 MACSTR " p2p=%u",
7832                                 MAC2STR(psk->addr), psk->p2p);
7833                         dl_list_del(&psk->list);
7834                         os_free(psk);
7835                         changed++;
7836                 }
7837         }
7838
7839         return changed;
7840 }
7841
7842
7843 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7844                          const u8 *p2p_dev_addr,
7845                          const u8 *psk, size_t psk_len)
7846 {
7847         struct wpa_ssid *ssid = wpa_s->current_ssid;
7848         struct wpa_ssid *persistent;
7849         struct psk_list_entry *p, *last;
7850
7851         if (psk_len != sizeof(p->psk))
7852                 return;
7853
7854         if (p2p_dev_addr) {
7855                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7856                         " p2p_dev_addr=" MACSTR,
7857                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7858                 if (is_zero_ether_addr(p2p_dev_addr))
7859                         p2p_dev_addr = NULL;
7860         } else {
7861                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7862                         MAC2STR(mac_addr));
7863         }
7864
7865         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7866                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7867                 /* To be added to persistent group once created */
7868                 if (wpa_s->global->add_psk == NULL) {
7869                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7870                         if (wpa_s->global->add_psk == NULL)
7871                                 return;
7872                 }
7873                 p = wpa_s->global->add_psk;
7874                 if (p2p_dev_addr) {
7875                         p->p2p = 1;
7876                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7877                 } else {
7878                         p->p2p = 0;
7879                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7880                 }
7881                 os_memcpy(p->psk, psk, psk_len);
7882                 return;
7883         }
7884
7885         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7886                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7887                 return;
7888         }
7889
7890         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7891                                              ssid->ssid_len);
7892         if (!persistent) {
7893                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7894                 return;
7895         }
7896
7897         p = os_zalloc(sizeof(*p));
7898         if (p == NULL)
7899                 return;
7900         if (p2p_dev_addr) {
7901                 p->p2p = 1;
7902                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7903         } else {
7904                 p->p2p = 0;
7905                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7906         }
7907         os_memcpy(p->psk, psk, psk_len);
7908
7909         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7910             (last = dl_list_last(&persistent->psk_list,
7911                                  struct psk_list_entry, list))) {
7912                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7913                         MACSTR " (p2p=%u) to make room for a new one",
7914                         MAC2STR(last->addr), last->p2p);
7915                 dl_list_del(&last->list);
7916                 os_free(last);
7917         }
7918
7919         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7920                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7921                                   p2p_dev_addr == NULL);
7922         if (p2p_dev_addr) {
7923                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7924                         MACSTR, MAC2STR(p2p_dev_addr));
7925         } else {
7926                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7927                         MAC2STR(mac_addr));
7928         }
7929         dl_list_add(&persistent->psk_list, &p->list);
7930
7931         if (wpa_s->parent->conf->update_config &&
7932             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7933                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7934 }
7935
7936
7937 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7938                                 struct wpa_ssid *s, const u8 *addr,
7939                                 int iface_addr)
7940 {
7941         int res;
7942
7943         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7944         if (res > 0 && wpa_s->conf->update_config &&
7945             wpa_config_write(wpa_s->confname, wpa_s->conf))
7946                 wpa_dbg(wpa_s, MSG_DEBUG,
7947                         "P2P: Failed to update configuration");
7948 }
7949
7950
7951 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7952                                       const u8 *peer, int iface_addr)
7953 {
7954         struct hostapd_data *hapd;
7955         struct hostapd_wpa_psk *psk, *prev, *rem;
7956         struct sta_info *sta;
7957
7958         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7959             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7960                 return;
7961
7962         /* Remove per-station PSK entry */
7963         hapd = wpa_s->ap_iface->bss[0];
7964         prev = NULL;
7965         psk = hapd->conf->ssid.wpa_psk;
7966         while (psk) {
7967                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7968                     (!iface_addr &&
7969                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7970                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7971                                 MACSTR " iface_addr=%d",
7972                                 MAC2STR(peer), iface_addr);
7973                         if (prev)
7974                                 prev->next = psk->next;
7975                         else
7976                                 hapd->conf->ssid.wpa_psk = psk->next;
7977                         rem = psk;
7978                         psk = psk->next;
7979                         os_free(rem);
7980                 } else {
7981                         prev = psk;
7982                         psk = psk->next;
7983                 }
7984         }
7985
7986         /* Disconnect from group */
7987         if (iface_addr)
7988                 sta = ap_get_sta(hapd, peer);
7989         else
7990                 sta = ap_get_sta_p2p(hapd, peer);
7991         if (sta) {
7992                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7993                         " (iface_addr=%d) from group",
7994                         MAC2STR(peer), iface_addr);
7995                 hostapd_drv_sta_deauth(hapd, sta->addr,
7996                                        WLAN_REASON_DEAUTH_LEAVING);
7997                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7998         }
7999 }
8000
8001
8002 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
8003                             int iface_addr)
8004 {
8005         struct wpa_ssid *s;
8006         struct wpa_supplicant *w;
8007         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
8008
8009         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
8010
8011         /* Remove from any persistent group */
8012         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
8013                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8014                         continue;
8015                 if (!iface_addr)
8016                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
8017                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
8018         }
8019
8020         /* Remove from any operating group */
8021         for (w = wpa_s->global->ifaces; w; w = w->next)
8022                 wpas_p2p_remove_client_go(w, peer, iface_addr);
8023 }
8024
8025
8026 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8027 {
8028         struct wpa_supplicant *wpa_s = eloop_ctx;
8029         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8030 }
8031
8032
8033 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8034 {
8035         struct wpa_supplicant *wpa_s = eloop_ctx;
8036
8037         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8038         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8039 }
8040
8041
8042 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8043                                         struct wpa_ssid *ssid)
8044 {
8045         struct wpa_supplicant *iface;
8046
8047         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8048                 if (!iface->current_ssid ||
8049                     iface->current_ssid->frequency == freq ||
8050                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8051                      !iface->current_ssid->p2p_group))
8052                         continue;
8053
8054                 /* Remove the connection with least priority */
8055                 if (!wpas_is_p2p_prioritized(iface)) {
8056                         /* STA connection has priority over existing
8057                          * P2P connection, so remove the interface. */
8058                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8059                         eloop_register_timeout(0, 0,
8060                                                wpas_p2p_group_freq_conflict,
8061                                                iface, NULL);
8062                         /* If connection in progress is P2P connection, do not
8063                          * proceed for the connection. */
8064                         if (wpa_s == iface)
8065                                 return -1;
8066                         else
8067                                 return 0;
8068                 } else {
8069                         /* P2P connection has priority, disable the STA network
8070                          */
8071                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
8072                                                        ssid);
8073                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8074                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8075                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8076                                   ETH_ALEN);
8077                         /* If P2P connection is in progress, continue
8078                          * connecting...*/
8079                         if (wpa_s == iface)
8080                                 return 0;
8081                         else
8082                                 return -1;
8083                 }
8084         }
8085
8086         return 0;
8087 }
8088
8089
8090 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8091 {
8092         struct wpa_ssid *ssid = wpa_s->current_ssid;
8093
8094         if (ssid == NULL || !ssid->p2p_group)
8095                 return 0;
8096
8097         if (wpa_s->p2p_last_4way_hs_fail &&
8098             wpa_s->p2p_last_4way_hs_fail == ssid) {
8099                 u8 go_dev_addr[ETH_ALEN];
8100                 struct wpa_ssid *persistent;
8101
8102                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8103                                               ssid->ssid,
8104                                               ssid->ssid_len) <= 0) {
8105                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8106                         goto disconnect;
8107                 }
8108
8109                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8110                         MACSTR, MAC2STR(go_dev_addr));
8111                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
8112                                                      ssid->ssid,
8113                                                      ssid->ssid_len);
8114                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8115                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8116                         goto disconnect;
8117                 }
8118                 wpa_msg_global(wpa_s->parent, MSG_INFO,
8119                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8120                                persistent->id);
8121         disconnect:
8122                 wpa_s->p2p_last_4way_hs_fail = NULL;
8123                 /*
8124                  * Remove the group from a timeout to avoid issues with caller
8125                  * continuing to use the interface if this is on a P2P group
8126                  * interface.
8127                  */
8128                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8129                                        wpa_s, NULL);
8130                 return 1;
8131         }
8132
8133         wpa_s->p2p_last_4way_hs_fail = ssid;
8134         return 0;
8135 }
8136
8137
8138 #ifdef CONFIG_WPS_NFC
8139
8140 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8141                                              struct wpabuf *p2p)
8142 {
8143         struct wpabuf *ret;
8144         size_t wsc_len;
8145
8146         if (p2p == NULL) {
8147                 wpabuf_free(wsc);
8148                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8149                 return NULL;
8150         }
8151
8152         wsc_len = wsc ? wpabuf_len(wsc) : 0;
8153         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8154         if (ret == NULL) {
8155                 wpabuf_free(wsc);
8156                 wpabuf_free(p2p);
8157                 return NULL;
8158         }
8159
8160         wpabuf_put_be16(ret, wsc_len);
8161         if (wsc)
8162                 wpabuf_put_buf(ret, wsc);
8163         wpabuf_put_be16(ret, wpabuf_len(p2p));
8164         wpabuf_put_buf(ret, p2p);
8165
8166         wpabuf_free(wsc);
8167         wpabuf_free(p2p);
8168         wpa_hexdump_buf(MSG_DEBUG,
8169                         "P2P: Generated NFC connection handover message", ret);
8170
8171         if (ndef && ret) {
8172                 struct wpabuf *tmp;
8173                 tmp = ndef_build_p2p(ret);
8174                 wpabuf_free(ret);
8175                 if (tmp == NULL) {
8176                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8177                         return NULL;
8178                 }
8179                 ret = tmp;
8180         }
8181
8182         return ret;
8183 }
8184
8185
8186 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8187                              struct wpa_ssid **ssid, u8 *go_dev_addr)
8188 {
8189         struct wpa_supplicant *iface;
8190
8191         if (go_dev_addr)
8192                 os_memset(go_dev_addr, 0, ETH_ALEN);
8193         if (ssid)
8194                 *ssid = NULL;
8195         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8196                 if (iface->wpa_state < WPA_ASSOCIATING ||
8197                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8198                     !iface->current_ssid->p2p_group ||
8199                     iface->current_ssid->mode != WPAS_MODE_INFRA)
8200                         continue;
8201                 if (ssid)
8202                         *ssid = iface->current_ssid;
8203                 if (go_dev_addr)
8204                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8205                 return iface->assoc_freq;
8206         }
8207         return 0;
8208 }
8209
8210
8211 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8212                                           int ndef)
8213 {
8214         struct wpabuf *wsc, *p2p;
8215         struct wpa_ssid *ssid;
8216         u8 go_dev_addr[ETH_ALEN];
8217         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8218
8219         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8220                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8221                 return NULL;
8222         }
8223
8224         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8225             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8226                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8227                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8228                 return NULL;
8229         }
8230
8231         if (cli_freq == 0) {
8232                 wsc = wps_build_nfc_handover_req_p2p(
8233                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8234         } else
8235                 wsc = NULL;
8236         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8237                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8238                                          ssid ? ssid->ssid_len : 0);
8239
8240         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8241 }
8242
8243
8244 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8245                                           int ndef, int tag)
8246 {
8247         struct wpabuf *wsc, *p2p;
8248         struct wpa_ssid *ssid;
8249         u8 go_dev_addr[ETH_ALEN];
8250         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8251
8252         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8253                 return NULL;
8254
8255         if (!tag && 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                 return NULL;
8259
8260         if (cli_freq == 0) {
8261                 wsc = wps_build_nfc_handover_sel_p2p(
8262                         wpa_s->parent->wps,
8263                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8264                         DEV_PW_NFC_CONNECTION_HANDOVER,
8265                         wpa_s->conf->wps_nfc_dh_pubkey,
8266                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8267         } else
8268                 wsc = NULL;
8269         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8270                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8271                                          ssid ? ssid->ssid_len : 0);
8272
8273         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8274 }
8275
8276
8277 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8278                                    struct p2p_nfc_params *params)
8279 {
8280         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8281                    "connection handover (freq=%d)",
8282                    params->go_freq);
8283
8284         if (params->go_freq && params->go_ssid_len) {
8285                 wpa_s->p2p_wps_method = WPS_NFC;
8286                 wpa_s->pending_join_wps_method = WPS_NFC;
8287                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8288                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8289                           ETH_ALEN);
8290                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8291                                            params->go_ssid,
8292                                            params->go_ssid_len);
8293         }
8294
8295         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8296                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8297                                 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8298                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth);
8299 }
8300
8301
8302 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8303                                   struct p2p_nfc_params *params, int tag)
8304 {
8305         int res, persistent;
8306         struct wpa_ssid *ssid;
8307
8308         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8309                    "connection handover");
8310         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8311                 ssid = wpa_s->current_ssid;
8312                 if (ssid == NULL)
8313                         continue;
8314                 if (ssid->mode != WPAS_MODE_P2P_GO)
8315                         continue;
8316                 if (wpa_s->ap_iface == NULL)
8317                         continue;
8318                 break;
8319         }
8320         if (wpa_s == NULL) {
8321                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8322                 return -1;
8323         }
8324
8325         if (wpa_s->parent->p2p_oob_dev_pw_id !=
8326             DEV_PW_NFC_CONNECTION_HANDOVER &&
8327             !wpa_s->parent->p2p_oob_dev_pw) {
8328                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8329                 return -1;
8330         }
8331         res = wpas_ap_wps_add_nfc_pw(
8332                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
8333                 wpa_s->parent->p2p_oob_dev_pw,
8334                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
8335                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
8336         if (res)
8337                 return res;
8338
8339         if (!tag) {
8340                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8341                 return 0;
8342         }
8343
8344         if (!params->peer ||
8345             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8346                 return 0;
8347
8348         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8349                    " to join", MAC2STR(params->peer->p2p_device_addr));
8350
8351         wpa_s->global->p2p_invite_group = wpa_s;
8352         persistent = ssid->p2p_persistent_group &&
8353                 wpas_p2p_get_persistent(wpa_s->parent,
8354                                         params->peer->p2p_device_addr,
8355                                         ssid->ssid, ssid->ssid_len);
8356         wpa_s->parent->pending_invite_ssid_id = -1;
8357
8358         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8359                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8360                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8361                           wpa_s->global->p2p_dev_addr, persistent, 0,
8362                           wpa_s->parent->p2p_oob_dev_pw_id);
8363 }
8364
8365
8366 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8367                                     struct p2p_nfc_params *params,
8368                                     int forced_freq)
8369 {
8370         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8371                    "connection handover");
8372         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8373                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8374                                 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8375                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth);
8376 }
8377
8378
8379 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8380                                     struct p2p_nfc_params *params,
8381                                     int forced_freq)
8382 {
8383         int res;
8384
8385         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8386                    "connection handover");
8387         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8388                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8389                                forced_freq, wpa_s->p2p_go_vht_center_freq2,
8390                                -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth);
8391         if (res)
8392                 return res;
8393
8394         res = wpas_p2p_listen(wpa_s, 60);
8395         if (res) {
8396                 p2p_unauthorize(wpa_s->global->p2p,
8397                                 params->peer->p2p_device_addr);
8398         }
8399
8400         return res;
8401 }
8402
8403
8404 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8405                                             const struct wpabuf *data,
8406                                             int sel, int tag, int forced_freq)
8407 {
8408         const u8 *pos, *end;
8409         u16 len, id;
8410         struct p2p_nfc_params params;
8411         int res;
8412
8413         os_memset(&params, 0, sizeof(params));
8414         params.sel = sel;
8415
8416         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8417
8418         pos = wpabuf_head(data);
8419         end = pos + wpabuf_len(data);
8420
8421         if (end - pos < 2) {
8422                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8423                            "attributes");
8424                 return -1;
8425         }
8426         len = WPA_GET_BE16(pos);
8427         pos += 2;
8428         if (len > end - pos) {
8429                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8430                            "attributes");
8431                 return -1;
8432         }
8433         params.wsc_attr = pos;
8434         params.wsc_len = len;
8435         pos += len;
8436
8437         if (end - pos < 2) {
8438                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8439                            "attributes");
8440                 return -1;
8441         }
8442         len = WPA_GET_BE16(pos);
8443         pos += 2;
8444         if (len > end - pos) {
8445                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8446                            "attributes");
8447                 return -1;
8448         }
8449         params.p2p_attr = pos;
8450         params.p2p_len = len;
8451         pos += len;
8452
8453         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8454                     params.wsc_attr, params.wsc_len);
8455         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8456                     params.p2p_attr, params.p2p_len);
8457         if (pos < end) {
8458                 wpa_hexdump(MSG_DEBUG,
8459                             "P2P: Ignored extra data after P2P attributes",
8460                             pos, end - pos);
8461         }
8462
8463         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8464         if (res)
8465                 return res;
8466
8467         if (params.next_step == NO_ACTION)
8468                 return 0;
8469
8470         if (params.next_step == BOTH_GO) {
8471                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8472                         MAC2STR(params.peer->p2p_device_addr));
8473                 return 0;
8474         }
8475
8476         if (params.next_step == PEER_CLIENT) {
8477                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8478                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8479                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8480                                 " ssid=\"%s\"",
8481                                 MAC2STR(params.peer->p2p_device_addr),
8482                                 params.go_freq,
8483                                 MAC2STR(params.go_dev_addr),
8484                                 wpa_ssid_txt(params.go_ssid,
8485                                              params.go_ssid_len));
8486                 } else {
8487                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8488                                 "peer=" MACSTR " freq=%d",
8489                                 MAC2STR(params.peer->p2p_device_addr),
8490                                 params.go_freq);
8491                 }
8492                 return 0;
8493         }
8494
8495         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8496                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8497                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8498                 return 0;
8499         }
8500
8501         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8502         wpa_s->p2p_oob_dev_pw = NULL;
8503
8504         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8505                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8506                            "received");
8507                 return -1;
8508         }
8509
8510         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8511         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8512         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8513                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8514         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8515                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8516         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8517
8518         if (tag) {
8519                 if (id < 0x10) {
8520                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8521                                    "peer OOB Device Password Id %u", id);
8522                         return -1;
8523                 }
8524                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8525                            "Device Password Id %u", id);
8526                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8527                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8528                                 params.oob_dev_pw_len -
8529                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
8530                 wpa_s->p2p_oob_dev_pw_id = id;
8531                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8532                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8533                         params.oob_dev_pw_len -
8534                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8535                 if (wpa_s->p2p_oob_dev_pw == NULL)
8536                         return -1;
8537
8538                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8539                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8540                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8541                         return -1;
8542         } else {
8543                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8544                            "without Device Password");
8545                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8546         }
8547
8548         switch (params.next_step) {
8549         case NO_ACTION:
8550         case BOTH_GO:
8551         case PEER_CLIENT:
8552                 /* already covered above */
8553                 return 0;
8554         case JOIN_GROUP:
8555                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8556         case AUTH_JOIN:
8557                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8558         case INIT_GO_NEG:
8559                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8560         case RESP_GO_NEG:
8561                 /* TODO: use own OOB Dev Pw */
8562                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8563         }
8564
8565         return -1;
8566 }
8567
8568
8569 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8570                              const struct wpabuf *data, int forced_freq)
8571 {
8572         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8573                 return -1;
8574
8575         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8576 }
8577
8578
8579 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8580                                  const struct wpabuf *req,
8581                                  const struct wpabuf *sel, int forced_freq)
8582 {
8583         struct wpabuf *tmp;
8584         int ret;
8585
8586         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8587                 return -1;
8588
8589         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8590
8591         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8592                           wpabuf_head(req), wpabuf_len(req));
8593         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8594                           wpabuf_head(sel), wpabuf_len(sel));
8595         if (forced_freq)
8596                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8597         tmp = ndef_parse_p2p(init ? sel : req);
8598         if (tmp == NULL) {
8599                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8600                 return -1;
8601         }
8602
8603         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8604                                                forced_freq);
8605         wpabuf_free(tmp);
8606
8607         return ret;
8608 }
8609
8610
8611 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8612 {
8613         const u8 *if_addr;
8614         int go_intent = wpa_s->conf->p2p_go_intent;
8615         struct wpa_supplicant *iface;
8616
8617         if (wpa_s->global->p2p == NULL)
8618                 return -1;
8619
8620         if (!enabled) {
8621                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8622                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8623                 {
8624                         if (!iface->ap_iface)
8625                                 continue;
8626                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8627                 }
8628                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8629                                                  0, NULL);
8630                 if (wpa_s->p2p_nfc_tag_enabled)
8631                         wpas_p2p_remove_pending_group_interface(wpa_s);
8632                 wpa_s->p2p_nfc_tag_enabled = 0;
8633                 return 0;
8634         }
8635
8636         if (wpa_s->global->p2p_disabled)
8637                 return -1;
8638
8639         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8640             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8641             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8642             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8643                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8644                            "to allow static handover cases");
8645                 return -1;
8646         }
8647
8648         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8649
8650         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8651         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8652         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8653         if (wpa_s->p2p_oob_dev_pw == NULL)
8654                 return -1;
8655         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8656
8657         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8658             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8659                 /*
8660                  * P2P Group Interface present and the command came on group
8661                  * interface, so enable the token for the current interface.
8662                  */
8663                 wpa_s->create_p2p_iface = 0;
8664         } else {
8665                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8666         }
8667
8668         if (wpa_s->create_p2p_iface) {
8669                 enum wpa_driver_if_type iftype;
8670                 /* Prepare to add a new interface for the group */
8671                 iftype = WPA_IF_P2P_GROUP;
8672                 if (go_intent == 15)
8673                         iftype = WPA_IF_P2P_GO;
8674                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8675                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8676                                    "interface for the group");
8677                         return -1;
8678                 }
8679
8680                 if_addr = wpa_s->pending_interface_addr;
8681         } else
8682                 if_addr = wpa_s->own_addr;
8683
8684         wpa_s->p2p_nfc_tag_enabled = enabled;
8685
8686         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8687                 struct hostapd_data *hapd;
8688                 if (iface->ap_iface == NULL)
8689                         continue;
8690                 hapd = iface->ap_iface->bss[0];
8691                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8692                 hapd->conf->wps_nfc_dh_pubkey =
8693                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8694                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8695                 hapd->conf->wps_nfc_dh_privkey =
8696                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8697                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8698                 hapd->conf->wps_nfc_dev_pw =
8699                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8700                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8701
8702                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8703                         wpa_dbg(iface, MSG_DEBUG,
8704                                 "P2P: Failed to enable NFC Tag for GO");
8705                 }
8706         }
8707         p2p_set_authorized_oob_dev_pw_id(
8708                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8709                 if_addr);
8710
8711         return 0;
8712 }
8713
8714 #endif /* CONFIG_WPS_NFC */
8715
8716
8717 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8718                                              struct wpa_used_freq_data *freqs,
8719                                              unsigned int num)
8720 {
8721         u8 curr_chan, cand, chan;
8722         unsigned int i;
8723
8724         /*
8725          * If possible, optimize the Listen channel to be a channel that is
8726          * already used by one of the other interfaces.
8727          */
8728         if (!wpa_s->conf->p2p_optimize_listen_chan)
8729                 return;
8730
8731         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8732                 return;
8733
8734         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8735         for (i = 0, cand = 0; i < num; i++) {
8736                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8737                 if (curr_chan == chan) {
8738                         cand = 0;
8739                         break;
8740                 }
8741
8742                 if (chan == 1 || chan == 6 || chan == 11)
8743                         cand = chan;
8744         }
8745
8746         if (cand) {
8747                 wpa_dbg(wpa_s, MSG_DEBUG,
8748                         "P2P: Update Listen channel to %u based on operating channel",
8749                         cand);
8750                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8751         }
8752 }
8753
8754
8755 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8756 {
8757         struct hostapd_config *conf;
8758         struct p2p_go_neg_results params;
8759         struct csa_settings csa_settings;
8760         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8761         int old_freq = current_ssid->frequency;
8762         int ret;
8763
8764         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8765                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8766                 return -1;
8767         }
8768
8769         /*
8770          * TODO: This function may not always work correctly. For example,
8771          * when we have a running GO and a BSS on a DFS channel.
8772          */
8773         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8774                 wpa_dbg(wpa_s, MSG_DEBUG,
8775                         "P2P CSA: Failed to select new frequency for GO");
8776                 return -1;
8777         }
8778
8779         if (current_ssid->frequency == params.freq) {
8780                 wpa_dbg(wpa_s, MSG_DEBUG,
8781                         "P2P CSA: Selected same frequency - not moving GO");
8782                 return 0;
8783         }
8784
8785         conf = hostapd_config_defaults();
8786         if (!conf) {
8787                 wpa_dbg(wpa_s, MSG_DEBUG,
8788                         "P2P CSA: Failed to allocate default config");
8789                 return -1;
8790         }
8791
8792         current_ssid->frequency = params.freq;
8793         if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
8794                 wpa_dbg(wpa_s, MSG_DEBUG,
8795                         "P2P CSA: Failed to create new GO config");
8796                 ret = -1;
8797                 goto out;
8798         }
8799
8800         if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
8801                 wpa_dbg(wpa_s, MSG_DEBUG,
8802                         "P2P CSA: CSA to a different band is not supported");
8803                 ret = -1;
8804                 goto out;
8805         }
8806
8807         os_memset(&csa_settings, 0, sizeof(csa_settings));
8808         csa_settings.cs_count = P2P_GO_CSA_COUNT;
8809         csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
8810         csa_settings.freq_params.freq = params.freq;
8811         csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
8812         csa_settings.freq_params.ht_enabled = conf->ieee80211n;
8813         csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
8814
8815         if (conf->ieee80211ac) {
8816                 int freq1 = 0, freq2 = 0;
8817                 u8 chan, opclass;
8818
8819                 if (ieee80211_freq_to_channel_ext(params.freq,
8820                                                   conf->secondary_channel,
8821                                                   conf->vht_oper_chwidth,
8822                                                   &opclass, &chan) ==
8823                     NUM_HOSTAPD_MODES) {
8824                         wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
8825                         ret = -1;
8826                         goto out;
8827                 }
8828
8829                 if (conf->vht_oper_centr_freq_seg0_idx)
8830                         freq1 = ieee80211_chan_to_freq(
8831                                 NULL, opclass,
8832                                 conf->vht_oper_centr_freq_seg0_idx);
8833
8834                 if (conf->vht_oper_centr_freq_seg1_idx)
8835                         freq2 = ieee80211_chan_to_freq(
8836                                 NULL, opclass,
8837                                 conf->vht_oper_centr_freq_seg1_idx);
8838
8839                 if (freq1 < 0 || freq2 < 0) {
8840                         wpa_dbg(wpa_s, MSG_DEBUG,
8841                                 "P2P CSA: Selected invalid VHT center freqs");
8842                         ret = -1;
8843                         goto out;
8844                 }
8845
8846                 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
8847                 csa_settings.freq_params.center_freq1 = freq1;
8848                 csa_settings.freq_params.center_freq2 = freq2;
8849
8850                 switch (conf->vht_oper_chwidth) {
8851                 case VHT_CHANWIDTH_80MHZ:
8852                 case VHT_CHANWIDTH_80P80MHZ:
8853                         csa_settings.freq_params.bandwidth = 80;
8854                         break;
8855                 case VHT_CHANWIDTH_160MHZ:
8856                         csa_settings.freq_params.bandwidth = 160;
8857                         break;
8858                 }
8859         }
8860
8861         ret = ap_switch_channel(wpa_s, &csa_settings);
8862 out:
8863         current_ssid->frequency = old_freq;
8864         hostapd_config_free(conf);
8865         return ret;
8866 }
8867
8868
8869 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8870 {
8871         struct p2p_go_neg_results params;
8872         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8873
8874         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8875
8876         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8877                 current_ssid->frequency);
8878
8879         /* Stop the AP functionality */
8880         /* TODO: Should do this in a way that does not indicated to possible
8881          * P2P Clients in the group that the group is terminated. */
8882         wpa_supplicant_ap_deinit(wpa_s);
8883
8884         /* Reselect the GO frequency */
8885         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8886                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8887                 wpas_p2p_group_delete(wpa_s,
8888                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8889                 return;
8890         }
8891         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8892                 params.freq);
8893
8894         if (params.freq &&
8895             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8896                 wpa_printf(MSG_DEBUG,
8897                            "P2P: Selected freq (%u MHz) is not valid for P2P",
8898                            params.freq);
8899                 wpas_p2p_group_delete(wpa_s,
8900                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8901                 return;
8902         }
8903
8904         /* Update the frequency */
8905         current_ssid->frequency = params.freq;
8906         wpa_s->connect_without_scan = current_ssid;
8907         wpa_s->reassociate = 1;
8908         wpa_s->disconnected = 0;
8909         wpa_supplicant_req_scan(wpa_s, 0, 0);
8910 }
8911
8912
8913 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8914 {
8915         struct wpa_supplicant *wpa_s = eloop_ctx;
8916
8917         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8918                 return;
8919
8920         wpas_p2p_go_update_common_freqs(wpa_s);
8921
8922         /* Do not move GO in the middle of a CSA */
8923         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8924                 wpa_printf(MSG_DEBUG,
8925                            "P2P: CSA is in progress - not moving GO");
8926                 return;
8927         }
8928
8929         /*
8930          * First, try a channel switch flow. If it is not supported or fails,
8931          * take down the GO and bring it up again.
8932          */
8933         if (wpas_p2p_move_go_csa(wpa_s) < 0)
8934                 wpas_p2p_move_go_no_csa(wpa_s);
8935 }
8936
8937
8938 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
8939 {
8940         struct wpa_supplicant *wpa_s = eloop_ctx;
8941         struct wpa_used_freq_data *freqs = NULL;
8942         unsigned int num = wpa_s->num_multichan_concurrent;
8943
8944         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8945         if (!freqs)
8946                 return;
8947
8948         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8949
8950         /* Previous attempt to move a GO was not possible -- try again. */
8951         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
8952                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
8953
8954         os_free(freqs);
8955 }
8956
8957
8958 /*
8959  * Consider moving a GO from its currently used frequency:
8960  * 1. It is possible that due to regulatory consideration the frequency
8961  *    can no longer be used and there is a need to evacuate the GO.
8962  * 2. It is possible that due to MCC considerations, it would be preferable
8963  *    to move the GO to a channel that is currently used by some other
8964  *    station interface.
8965  *
8966  * In case a frequency that became invalid is once again valid, cancel a
8967  * previously initiated GO frequency change.
8968  */
8969 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
8970                                             struct wpa_used_freq_data *freqs,
8971                                             unsigned int num)
8972 {
8973         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
8974         unsigned int timeout;
8975         int freq;
8976
8977         wpas_p2p_go_update_common_freqs(wpa_s);
8978
8979         freq = wpa_s->current_ssid->frequency;
8980         for (i = 0, invalid_freq = 0; i < num; i++) {
8981                 if (freqs[i].freq == freq) {
8982                         flags = freqs[i].flags;
8983
8984                         /* The channel is invalid, must change it */
8985                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
8986                                 wpa_dbg(wpa_s, MSG_DEBUG,
8987                                         "P2P: Freq=%d MHz no longer valid for GO",
8988                                         freq);
8989                                 invalid_freq = 1;
8990                         }
8991                 } else if (freqs[i].flags == 0) {
8992                         /* Freq is not used by any other station interface */
8993                         continue;
8994                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
8995                                                freqs[i].freq)) {
8996                         /* Freq is not valid for P2P use cases */
8997                         continue;
8998                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8999                            P2P_GO_FREQ_MOVE_SCM) {
9000                         policy_move = 1;
9001                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9002                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
9003                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9004                         policy_move = 1;
9005                 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
9006                             P2P_GO_FREQ_MOVE_SCM_ECSA) &&
9007                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9008                         if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
9009                                 policy_move = 1;
9010                         } else if ((wpa_s->drv_flags &
9011                                     WPA_DRIVER_FLAGS_AP_CSA) &&
9012                                    wpas_p2p_go_clients_support_ecsa(wpa_s)) {
9013                                 u8 chan;
9014
9015                                 /*
9016                                  * We do not support CSA between bands, so move
9017                                  * GO only within the same band.
9018                                  */
9019                                 if (wpa_s->ap_iface->current_mode->mode ==
9020                                     ieee80211_freq_to_chan(freqs[i].freq,
9021                                                            &chan))
9022                                         policy_move = 1;
9023                         }
9024                 }
9025         }
9026
9027         wpa_dbg(wpa_s, MSG_DEBUG,
9028                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9029                 invalid_freq, policy_move, flags);
9030
9031         /*
9032          * The channel is valid, or we are going to have a policy move, so
9033          * cancel timeout.
9034          */
9035         if (!invalid_freq || policy_move) {
9036                 wpa_dbg(wpa_s, MSG_DEBUG,
9037                         "P2P: Cancel a GO move from freq=%d MHz", freq);
9038                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9039
9040                 if (wpas_p2p_in_progress(wpa_s)) {
9041                         wpa_dbg(wpa_s, MSG_DEBUG,
9042                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9043                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9044                                              wpa_s, NULL);
9045                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9046                                                wpas_p2p_reconsider_moving_go,
9047                                                wpa_s, NULL);
9048                         return;
9049                 }
9050         }
9051
9052         if (!invalid_freq && (!policy_move || flags != 0)) {
9053                 wpa_dbg(wpa_s, MSG_DEBUG,
9054                         "P2P: Not initiating a GO frequency change");
9055                 return;
9056         }
9057
9058         /*
9059          * Do not consider moving GO if it is in the middle of a CSA. When the
9060          * CSA is finished this flow should be retriggered.
9061          */
9062         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9063                 wpa_dbg(wpa_s, MSG_DEBUG,
9064                         "P2P: Not initiating a GO frequency change - CSA is in progress");
9065                 return;
9066         }
9067
9068         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9069                 timeout = P2P_GO_FREQ_CHANGE_TIME;
9070         else
9071                 timeout = 0;
9072
9073         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9074                 freq, timeout);
9075         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9076         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9077 }
9078
9079
9080 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9081                                          struct wpa_used_freq_data *freqs,
9082                                          unsigned int num,
9083                                          enum wpas_p2p_channel_update_trig trig)
9084 {
9085         struct wpa_supplicant *ifs;
9086
9087         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9088                              NULL);
9089
9090         /*
9091          * Travers all the radio interfaces, and for each GO interface, check
9092          * if there is a need to move the GO from the frequency it is using,
9093          * or in case the frequency is valid again, cancel the evacuation flow.
9094          */
9095         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9096                          radio_list) {
9097                 if (ifs->current_ssid == NULL ||
9098                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9099                         continue;
9100
9101                 /*
9102                  * The GO was just started or completed channel switch, no need
9103                  * to move it.
9104                  */
9105                 if (wpa_s == ifs &&
9106                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9107                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9108                         wpa_dbg(wpa_s, MSG_DEBUG,
9109                                 "P2P: GO move - schedule re-consideration");
9110                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9111                                                wpas_p2p_reconsider_moving_go,
9112                                                wpa_s, NULL);
9113                         continue;
9114                 }
9115
9116                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9117         }
9118 }
9119
9120
9121 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9122 {
9123         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9124                 return;
9125
9126         wpas_p2p_update_channel_list(wpa_s,
9127                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9128 }
9129
9130
9131 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9132 {
9133         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9134                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9135                         "the management interface is being removed");
9136                 wpas_p2p_deinit_global(wpa_s->global);
9137         }
9138 }
9139
9140
9141 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9142 {
9143         if (wpa_s->ap_iface->bss)
9144                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9145         wpas_p2p_group_deinit(wpa_s);
9146 }