wpa_supplicant/p2p_supplicant.c

   1 /*
   2  * wpa_supplicant - P2P
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi>
   5  *
   6  * This software may be distributed under the terms of the BSD license.
   7  * See README for more details.
   8  */
   9
  10 #include "includes.h"
  11
  12 #include "common.h"
  13 #include "eloop.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/wpa_ctrl.h"
  17 #include "wps/wps_i.h"
  18 #include "p2p/p2p.h"
  19 #include "ap/hostapd.h"
  20 #include "ap/ap_config.h"
  21 #include "ap/sta_info.h"
  22 #include "ap/ap_drv_ops.h"
  23 #include "ap/wps_hostapd.h"
  24 #include "ap/p2p_hostapd.h"
  25 #include "ap/dfs.h"
  26 #include "eapol_supp/eapol_supp_sm.h"
  27 #include "rsn_supp/wpa.h"
  28 #include "wpa_supplicant_i.h"
  29 #include "driver_i.h"
  30 #include "ap.h"
  31 #include "config_ssid.h"
  32 #include "config.h"
  33 #include "notify.h"
  34 #include "scan.h"
  35 #include "bss.h"
  36 #include "offchannel.h"
  37 #include "wps_supplicant.h"
  38 #include "p2p_supplicant.h"
  39 #include "wifi_display.h"
  40
  41
  42 /*
  43  * How many times to try to scan to find the GO before giving up on join
  44  * request.
  45  */
  46 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  47
  48 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
  49
  50 /**
  51  * Defines time interval in seconds when a GO needs to evacuate a frequency that
  52  * it is currently using, but is no longer valid for P2P use cases.
  53  */
  54 #define P2P_GO_FREQ_CHANGE_TIME 5
  55
  56 /**
  57  * Defines CSA parameters which are used when GO evacuates the no longer valid
  58  * channel (and if the driver supports channel switch).
  59  */
  60 #define P2P_GO_CSA_COUNT 7
  61 #define P2P_GO_CSA_BLOCK_TX 0
  62
  63 #ifndef P2P_MAX_CLIENT_IDLE
  64 /*
  65  * How many seconds to try to reconnect to the GO when connection in P2P client
  66  * role has been lost.
  67  */
  68 #define P2P_MAX_CLIENT_IDLE 10
  69 #endif /* P2P_MAX_CLIENT_IDLE */
  70
  71 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  72 /*
  73  * How many seconds to wait for initial 4-way handshake to get completed after
  74  * WPS provisioning step or after the re-invocation of a persistent group on a
  75  * P2P Client.
  76  */
  77 #define P2P_MAX_INITIAL_CONN_WAIT 10
  78 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  79
  80 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
  81 /*
  82  * How many seconds to wait for initial 4-way handshake to get completed after
  83  * WPS provisioning step on the GO. This controls the extra time the P2P
  84  * operation is considered to be in progress (e.g., to delay other scans) after
  85  * WPS provisioning has been completed on the GO during group formation.
  86  */
  87 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
  88 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
  89
  90 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
  91 /*
  92  * How many seconds to wait for initial 4-way handshake to get completed after
  93  * re-invocation of a persistent group on the GO when the client is expected
  94  * to connect automatically (no user interaction).
  95  */
  96 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
  97 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
  98
  99 #define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"
 100
 101 /*
 102  * How many seconds to wait to re-attempt to move GOs, in case previous attempt
 103  * was not possible.
 104  */
 105 #define P2P_RECONSIDER_GO_MOVE_DELAY 30
 106
 107 enum p2p_group_removal_reason {
 108         P2P_GROUP_REMOVAL_UNKNOWN,
 109         P2P_GROUP_REMOVAL_SILENT,
 110         P2P_GROUP_REMOVAL_FORMATION_FAILED,
 111         P2P_GROUP_REMOVAL_REQUESTED,
 112         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
 113         P2P_GROUP_REMOVAL_UNAVAILABLE,
 114         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
 115         P2P_GROUP_REMOVAL_PSK_FAILURE,
 116         P2P_GROUP_REMOVAL_FREQ_CONFLICT,
 117         P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL
 118 };
 119
 120
 121 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
 122 static struct wpa_supplicant *
 123 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
 124                          int go);
 125 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
 126                                const u8 *ssid, size_t ssid_len);
 127 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
 128                                 int *force_freq, int *pref_freq, int go,
 129                                 unsigned int *pref_freq_list,
 130                                 unsigned int *num_pref_freq);
 131 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 132                                    const u8 *ssid, size_t ssid_len);
 133 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 134 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 135                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 136                          int auto_join, int freq,
 137                          const u8 *ssid, size_t ssid_len);
 138 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 139 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 140 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 141 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 142 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 143                                              void *timeout_ctx);
 144 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 145 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 146                                        int group_added);
 147 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 148 static void wpas_stop_listen(void *ctx);
 149 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
 150 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
 151 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 152                                         enum wpa_driver_if_type type);
 153 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
 154                                             int already_deleted);
 155 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
 156                                              struct wpa_used_freq_data *freqs,
 157                                              unsigned int num);
 158 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx);
 159 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq);
 160 static void
 161 wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
 162                              struct wpa_used_freq_data *freqs, unsigned int num,
 163                              enum wpas_p2p_channel_update_trig trig);
 164 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx);
 165
 166
 167 /*
 168  * Get the number of concurrent channels that the HW can operate, but that are
 169  * currently not in use by any of the wpa_supplicant interfaces.
 170  */
 171 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 172 {
 173         int *freqs;
 174         int num, unused;
 175
 176         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 177         if (!freqs)
 178                 return -1;
 179
 180         num = get_shared_radio_freqs(wpa_s, freqs,
 181                                      wpa_s->num_multichan_concurrent);
 182         os_free(freqs);
 183
 184         unused = wpa_s->num_multichan_concurrent - num;
 185         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 186         return unused;
 187 }
 188
 189
 190 /*
 191  * Get the frequencies that are currently in use by one or more of the virtual
 192  * interfaces, and that are also valid for P2P operation.
 193  */
 194 static unsigned int
 195 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 196                           struct wpa_used_freq_data *p2p_freqs,
 197                           unsigned int len)
 198 {
 199         struct wpa_used_freq_data *freqs;
 200         unsigned int num, i, j;
 201
 202         freqs = os_calloc(wpa_s->num_multichan_concurrent,
 203                           sizeof(struct wpa_used_freq_data));
 204         if (!freqs)
 205                 return 0;
 206
 207         num = get_shared_radio_freqs_data(wpa_s, freqs,
 208                                           wpa_s->num_multichan_concurrent);
 209
 210         os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
 211
 212         for (i = 0, j = 0; i < num && j < len; i++) {
 213                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
 214                         p2p_freqs[j++] = freqs[i];
 215         }
 216
 217         os_free(freqs);
 218
 219         dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
 220
 221         return j;
 222 }
 223
 224
 225 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 226                                              int freq)
 227 {
 228         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 229                 return;
 230
 231         /* Use the wpa_s used to control the P2P Device operation */
 232         wpa_s = wpa_s->global->p2p_init_wpa_s;
 233
 234         if (wpa_s->conf->p2p_ignore_shared_freq &&
 235             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 236             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 237                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 238                            freq);
 239                 freq = 0;
 240         }
 241         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 242 }
 243
 244
 245 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 246                                       struct wpa_scan_results *scan_res)
 247 {
 248         size_t i;
 249
 250         if (wpa_s->p2p_scan_work) {
 251                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 252                 wpa_s->p2p_scan_work = NULL;
 253                 radio_work_done(work);
 254         }
 255
 256         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 257                 return;
 258
 259         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 260                    (int) scan_res->num);
 261
 262         for (i = 0; i < scan_res->num; i++) {
 263                 struct wpa_scan_res *bss = scan_res->res[i];
 264                 struct os_reltime time_tmp_age, entry_ts;
 265                 const u8 *ies;
 266                 size_t ies_len;
 267
 268                 time_tmp_age.sec = bss->age / 1000;
 269                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 270                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 271
 272                 ies = (const u8 *) (bss + 1);
 273                 ies_len = bss->ie_len;
 274                 if (bss->beacon_ie_len > 0 &&
 275                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 276                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 277                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 278                                    MACSTR, MAC2STR(bss->bssid));
 279                         ies = ies + ies_len;
 280                         ies_len = bss->beacon_ie_len;
 281                 }
 282
 283
 284                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 285                                          bss->freq, &entry_ts, bss->level,
 286                                          ies, ies_len) > 0)
 287                         break;
 288         }
 289
 290         p2p_scan_res_handled(wpa_s->global->p2p);
 291 }
 292
 293
 294 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 295 {
 296         struct wpa_supplicant *wpa_s = work->wpa_s;
 297         struct wpa_driver_scan_params *params = work->ctx;
 298         int ret;
 299
 300         if (deinit) {
 301                 if (!work->started) {
 302                         wpa_scan_free_params(params);
 303                         return;
 304                 }
 305
 306                 wpa_s->p2p_scan_work = NULL;
 307                 return;
 308         }
 309
 310         ret = wpa_drv_scan(wpa_s, params);
 311         wpa_scan_free_params(params);
 312         work->ctx = NULL;
 313         if (ret) {
 314                 radio_work_done(work);
 315                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 316                 return;
 317         }
 318
 319         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 320         os_get_reltime(&wpa_s->scan_trigger_time);
 321         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 322         wpa_s->own_scan_requested = 1;
 323         wpa_s->p2p_scan_work = work;
 324 }
 325
 326
 327 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 328                                           int freq)
 329 {
 330         if (wpa_s->global->p2p_24ghz_social_channels &&
 331             (freq == 2412 || freq == 2437 || freq == 2462)) {
 332                 /*
 333                  * Search all social channels regardless of whether these have
 334                  * been disabled for P2P operating channel use to avoid missing
 335                  * peers.
 336                  */
 337                 return 1;
 338         }
 339         return p2p_supported_freq(wpa_s->global->p2p, freq);
 340 }
 341
 342
 343 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 344                          unsigned int num_req_dev_types,
 345                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 346 {
 347         struct wpa_supplicant *wpa_s = ctx;
 348         struct wpa_driver_scan_params *params = NULL;
 349         struct wpabuf *wps_ie, *ies;
 350         unsigned int num_channels = 0;
 351         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 352         size_t ielen;
 353         u8 *n, i;
 354
 355         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 356                 return -1;
 357
 358         if (wpa_s->p2p_scan_work) {
 359                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 360                 return -1;
 361         }
 362
 363         params = os_zalloc(sizeof(*params));
 364         if (params == NULL)
 365                 return -1;
 366
 367         /* P2P Wildcard SSID */
 368         params->num_ssids = 1;
 369         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 370         if (n == NULL)
 371                 goto fail;
 372         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 373         params->ssids[0].ssid = n;
 374         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 375
 376         wpa_s->wps->dev.p2p = 1;
 377         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 378                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 379                                         num_req_dev_types, req_dev_types);
 380         if (wps_ie == NULL)
 381                 goto fail;
 382
 383         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 384         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 385         if (ies == NULL) {
 386                 wpabuf_free(wps_ie);
 387                 goto fail;
 388         }
 389         wpabuf_put_buf(ies, wps_ie);
 390         wpabuf_free(wps_ie);
 391
 392         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 393
 394         params->p2p_probe = 1;
 395         n = os_malloc(wpabuf_len(ies));
 396         if (n == NULL) {
 397                 wpabuf_free(ies);
 398                 goto fail;
 399         }
 400         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 401         params->extra_ies = n;
 402         params->extra_ies_len = wpabuf_len(ies);
 403         wpabuf_free(ies);
 404
 405         switch (type) {
 406         case P2P_SCAN_SOCIAL:
 407                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 408                                           sizeof(int));
 409                 if (params->freqs == NULL)
 410                         goto fail;
 411                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 412                         if (wpas_p2p_search_social_channel(
 413                                     wpa_s, social_channels_freq[i]))
 414                                 params->freqs[num_channels++] =
 415                                         social_channels_freq[i];
 416                 }
 417                 params->freqs[num_channels++] = 0;
 418                 break;
 419         case P2P_SCAN_FULL:
 420                 break;
 421         case P2P_SCAN_SPECIFIC:
 422                 params->freqs = os_calloc(2, sizeof(int));
 423                 if (params->freqs == NULL)
 424                         goto fail;
 425                 params->freqs[0] = freq;
 426                 params->freqs[1] = 0;
 427                 break;
 428         case P2P_SCAN_SOCIAL_PLUS_ONE:
 429                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 430                                           sizeof(int));
 431                 if (params->freqs == NULL)
 432                         goto fail;
 433                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 434                         if (wpas_p2p_search_social_channel(
 435                                     wpa_s, social_channels_freq[i]))
 436                                 params->freqs[num_channels++] =
 437                                         social_channels_freq[i];
 438                 }
 439                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 440                         params->freqs[num_channels++] = freq;
 441                 params->freqs[num_channels++] = 0;
 442                 break;
 443         }
 444
 445         radio_remove_works(wpa_s, "p2p-scan", 0);
 446         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 447                            params) < 0)
 448                 goto fail;
 449         return 0;
 450
 451 fail:
 452         wpa_scan_free_params(params);
 453         return -1;
 454 }
 455
 456
 457 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 458 {
 459         switch (p2p_group_interface) {
 460         case P2P_GROUP_INTERFACE_PENDING:
 461                 return WPA_IF_P2P_GROUP;
 462         case P2P_GROUP_INTERFACE_GO:
 463                 return WPA_IF_P2P_GO;
 464         case P2P_GROUP_INTERFACE_CLIENT:
 465                 return WPA_IF_P2P_CLIENT;
 466         }
 467
 468         return WPA_IF_P2P_GROUP;
 469 }
 470
 471
 472 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 473                                                   const u8 *ssid,
 474                                                   size_t ssid_len, int *go)
 475 {
 476         struct wpa_ssid *s;
 477
 478         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 479                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 480                         if (s->disabled != 0 || !s->p2p_group ||
 481                             s->ssid_len != ssid_len ||
 482                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 483                                 continue;
 484                         if (s->mode == WPAS_MODE_P2P_GO &&
 485                             s != wpa_s->current_ssid)
 486                                 continue;
 487                         if (go)
 488                                 *go = s->mode == WPAS_MODE_P2P_GO;
 489                         return wpa_s;
 490                 }
 491         }
 492
 493         return NULL;
 494 }
 495
 496
 497 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 498 {
 499         struct wpa_supplicant *wpa_s = eloop_ctx;
 500         wpa_printf(MSG_DEBUG,
 501                    "P2P: Complete previously requested removal of %s",
 502                    wpa_s->ifname);
 503         wpas_p2p_disconnect(wpa_s);
 504 }
 505
 506
 507 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 508                                       struct wpa_supplicant *calling_wpa_s)
 509 {
 510         if (calling_wpa_s == wpa_s && wpa_s &&
 511             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 512                 /*
 513                  * The calling wpa_s instance is going to be removed. Do that
 514                  * from an eloop callback to keep the instance available until
 515                  * the caller has returned. This my be needed, e.g., to provide
 516                  * control interface responses on the per-interface socket.
 517                  */
 518                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 519                                            wpa_s, NULL) < 0)
 520                         return -1;
 521                 return 0;
 522         }
 523
 524         return wpas_p2p_disconnect(wpa_s);
 525 }
 526
 527
 528 /* Determine total number of clients in active groups where we are the GO */
 529 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 530 {
 531         unsigned int count = 0;
 532         struct wpa_ssid *s;
 533
 534         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 535                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 536                         wpa_printf(MSG_DEBUG,
 537                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 538                                    wpa_s, s, s->disabled, s->p2p_group,
 539                                    s->mode);
 540                         if (!s->disabled && s->p2p_group &&
 541                             s->mode == WPAS_MODE_P2P_GO) {
 542                                 count += p2p_get_group_num_members(
 543                                         wpa_s->p2p_group);
 544                         }
 545                 }
 546         }
 547
 548         return count;
 549 }
 550
 551
 552 static unsigned int p2p_is_active_persistent_group(struct wpa_supplicant *wpa_s)
 553 {
 554         return !wpa_s->p2p_mgmt && wpa_s->current_ssid &&
 555                 !wpa_s->current_ssid->disabled &&
 556                 wpa_s->current_ssid->p2p_group &&
 557                 wpa_s->current_ssid->p2p_persistent_group;
 558 }
 559
 560
 561 static unsigned int p2p_is_active_persistent_go(struct wpa_supplicant *wpa_s)
 562 {
 563         return p2p_is_active_persistent_group(wpa_s) &&
 564                 wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO;
 565 }
 566
 567
 568 /* Find an interface for a P2P group where we are the GO */
 569 static struct wpa_supplicant *
 570 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 571 {
 572         struct wpa_supplicant *save = NULL;
 573
 574         if (!wpa_s)
 575                 return NULL;
 576
 577         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 578                 if (!p2p_is_active_persistent_go(wpa_s))
 579                         continue;
 580
 581                 /* Prefer a group with connected clients */
 582                 if (p2p_get_group_num_members(wpa_s->p2p_group))
 583                         return wpa_s;
 584                 save = wpa_s;
 585         }
 586
 587         /* No group with connected clients, so pick the one without (if any) */
 588         return save;
 589 }
 590
 591
 592 static unsigned int p2p_is_active_persistent_cli(struct wpa_supplicant *wpa_s)
 593 {
 594         return p2p_is_active_persistent_group(wpa_s) &&
 595                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
 596 }
 597
 598
 599 /* Find an interface for a P2P group where we are the P2P Client */
 600 static struct wpa_supplicant *
 601 wpas_p2p_get_cli_group(struct wpa_supplicant *wpa_s)
 602 {
 603         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 604                 if (p2p_is_active_persistent_cli(wpa_s))
 605                         return wpa_s;
 606         }
 607
 608         return NULL;
 609 }
 610
 611
 612 /* Find a persistent group where we are the GO */
 613 static struct wpa_ssid *
 614 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
 615 {
 616         struct wpa_ssid *s;
 617
 618         for (s = wpa_s->conf->ssid; s; s = s->next) {
 619                 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
 620                         return s;
 621         }
 622
 623         return NULL;
 624 }
 625
 626
 627 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role,
 628                                 unsigned int *force_freq,
 629                                 unsigned int *pref_freq)
 630 {
 631         struct wpa_supplicant *wpa_s = ctx;
 632         struct wpa_ssid *s;
 633         u8 conncap = P2PS_SETUP_NONE;
 634         unsigned int owned_members = 0;
 635         struct wpa_supplicant *go_wpa_s, *cli_wpa_s;
 636         struct wpa_ssid *persistent_go;
 637         int p2p_no_group_iface;
 638         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
 639
 640         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 641
 642         if (force_freq)
 643                 *force_freq = 0;
 644         if (pref_freq)
 645                 *pref_freq = 0;
 646
 647         size = P2P_MAX_PREF_CHANNELS;
 648         if (force_freq && pref_freq &&
 649             !wpas_p2p_setup_freqs(wpa_s, 0, (int *) force_freq,
 650                                   (int *) pref_freq, 0, pref_freq_list, &size))
 651                 wpas_p2p_set_own_freq_preference(wpa_s,
 652                                                  *force_freq ? *force_freq :
 653                                                  *pref_freq);
 654
 655         /*
 656          * For non-concurrent capable devices:
 657          * If persistent_go, then no new.
 658          * If GO, then no client.
 659          * If client, then no GO.
 660          */
 661         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 662         if (go_wpa_s)
 663                 owned_members = p2p_get_group_num_members(go_wpa_s->p2p_group);
 664         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 665         p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s);
 666         cli_wpa_s = wpas_p2p_get_cli_group(wpa_s);
 667
 668         wpa_printf(MSG_DEBUG,
 669                    "P2P: GO(iface)=%p members=%u CLI(iface)=%p persistent(ssid)=%p",
 670                    go_wpa_s, owned_members, cli_wpa_s, persistent_go);
 671
 672         /* If not concurrent, restrict our choices */
 673         if (p2p_no_group_iface) {
 674                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 675
 676                 if (cli_wpa_s)
 677                         return P2PS_SETUP_NONE;
 678
 679                 if (go_wpa_s) {
 680                         if (role == P2PS_SETUP_CLIENT ||
 681                             incoming == P2PS_SETUP_GROUP_OWNER ||
 682                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 683                                 return P2PS_SETUP_NONE;
 684
 685                         return P2PS_SETUP_GROUP_OWNER;
 686                 }
 687
 688                 if (persistent_go) {
 689                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 690                                 if (!incoming)
 691                                         return P2PS_SETUP_GROUP_OWNER |
 692                                                 P2PS_SETUP_CLIENT;
 693                                 if (incoming == P2PS_SETUP_NEW) {
 694                                         u8 r;
 695
 696                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 697                                             (r & 1))
 698                                                 return P2PS_SETUP_CLIENT;
 699                                         return P2PS_SETUP_GROUP_OWNER;
 700                                 }
 701                         }
 702                 }
 703         }
 704
 705         /* If a required role has been specified, handle it here */
 706         if (role && role != P2PS_SETUP_NEW) {
 707                 switch (incoming) {
 708                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 709                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 710                         /*
 711                          * Peer has an active GO, so if the role allows it and
 712                          * we do not have any active roles, become client.
 713                          */
 714                         if ((role & P2PS_SETUP_CLIENT) && !go_wpa_s &&
 715                             !cli_wpa_s)
 716                                 return P2PS_SETUP_CLIENT;
 717
 718                         /* fall through */
 719
 720                 case P2PS_SETUP_NONE:
 721                 case P2PS_SETUP_NEW:
 722                         conncap = role;
 723                         goto grp_owner;
 724
 725                 case P2PS_SETUP_GROUP_OWNER:
 726                         /*
 727                          * Must be a complimentary role - cannot be a client to
 728                          * more than one peer.
 729                          */
 730                         if (incoming == role || cli_wpa_s)
 731                                 return P2PS_SETUP_NONE;
 732
 733                         return P2PS_SETUP_CLIENT;
 734
 735                 case P2PS_SETUP_CLIENT:
 736                         /* Must be a complimentary role */
 737                         if (incoming != role) {
 738                                 conncap = P2PS_SETUP_GROUP_OWNER;
 739                                 goto grp_owner;
 740                         }
 741
 742                 default:
 743                         return P2PS_SETUP_NONE;
 744                 }
 745         }
 746
 747         /*
 748          * For now, we only will support ownership of one group, and being a
 749          * client of one group. Therefore, if we have either an existing GO
 750          * group, or an existing client group, we will not do a new GO
 751          * negotiation, but rather try to re-use the existing groups.
 752          */
 753         switch (incoming) {
 754         case P2PS_SETUP_NONE:
 755         case P2PS_SETUP_NEW:
 756                 if (cli_wpa_s)
 757                         conncap = P2PS_SETUP_GROUP_OWNER;
 758                 else if (!owned_members)
 759                         conncap = P2PS_SETUP_NEW;
 760                 else if (incoming == P2PS_SETUP_NONE)
 761                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 762                 else
 763                         conncap = P2PS_SETUP_CLIENT;
 764                 break;
 765
 766         case P2PS_SETUP_CLIENT:
 767                 conncap = P2PS_SETUP_GROUP_OWNER;
 768                 break;
 769
 770         case P2PS_SETUP_GROUP_OWNER:
 771                 if (!cli_wpa_s)
 772                         conncap = P2PS_SETUP_CLIENT;
 773                 break;
 774
 775         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 776         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 777                 if (cli_wpa_s)
 778                         conncap = P2PS_SETUP_GROUP_OWNER;
 779                 else {
 780                         u8 r;
 781
 782                         if (os_get_random(&r, sizeof(r)) < 0 ||
 783                             (r & 1))
 784                                 conncap = P2PS_SETUP_CLIENT;
 785                         else
 786                                 conncap = P2PS_SETUP_GROUP_OWNER;
 787                 }
 788                 break;
 789
 790         default:
 791                 return P2PS_SETUP_NONE;
 792         }
 793
 794 grp_owner:
 795         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 796             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 797                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 798                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 799
 800                 s = wpas_p2p_get_persistent_go(wpa_s);
 801                 if (!s && !go_wpa_s && p2p_no_group_iface) {
 802                         p2p_set_intended_addr(wpa_s->global->p2p,
 803                                               wpa_s->own_addr);
 804                 } else if (!s && !go_wpa_s) {
 805                         if (wpas_p2p_add_group_interface(wpa_s,
 806                                                          WPA_IF_P2P_GO) < 0) {
 807                                 wpa_printf(MSG_ERROR,
 808                                            "P2P: Failed to allocate a new interface for the group");
 809                                 return P2PS_SETUP_NONE;
 810                         }
 811                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 812                         p2p_set_intended_addr(wpa_s->global->p2p,
 813                                               wpa_s->pending_interface_addr);
 814                 }
 815         }
 816
 817         return conncap;
 818 }
 819
 820
 821 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 822                                  enum p2p_group_removal_reason removal_reason)
 823 {
 824         struct wpa_ssid *ssid;
 825         char *gtype;
 826         const char *reason;
 827
 828         ssid = wpa_s->current_ssid;
 829         if (ssid == NULL) {
 830                 /*
 831                  * The current SSID was not known, but there may still be a
 832                  * pending P2P group interface waiting for provisioning or a
 833                  * P2P group that is trying to reconnect.
 834                  */
 835                 ssid = wpa_s->conf->ssid;
 836                 while (ssid) {
 837                         if (ssid->p2p_group && ssid->disabled != 2)
 838                                 break;
 839                         ssid = ssid->next;
 840                 }
 841                 if (ssid == NULL &&
 842                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 843                 {
 844                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 845                                    "not found");
 846                         return -1;
 847                 }
 848         }
 849         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 850                 gtype = "GO";
 851         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 852                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 853                 wpa_s->reassociate = 0;
 854                 wpa_s->disconnected = 1;
 855                 gtype = "client";
 856         } else
 857                 gtype = "GO";
 858
 859         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 860                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 861
 862         if (os_strcmp(gtype, "client") == 0) {
 863                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 864                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 865                                                 wpa_s, NULL)) {
 866                         wpa_printf(MSG_DEBUG,
 867                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 868                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 869                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 870                                              wpa_s, NULL);
 871                 }
 872         }
 873
 874         if (wpa_s->cross_connect_in_use) {
 875                 wpa_s->cross_connect_in_use = 0;
 876                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 877                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 878                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 879         }
 880         switch (removal_reason) {
 881         case P2P_GROUP_REMOVAL_REQUESTED:
 882                 reason = " reason=REQUESTED";
 883                 break;
 884         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 885                 reason = " reason=FORMATION_FAILED";
 886                 break;
 887         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 888                 reason = " reason=IDLE";
 889                 break;
 890         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 891                 reason = " reason=UNAVAILABLE";
 892                 break;
 893         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 894                 reason = " reason=GO_ENDING_SESSION";
 895                 break;
 896         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 897                 reason = " reason=PSK_FAILURE";
 898                 break;
 899         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 900                 reason = " reason=FREQ_CONFLICT";
 901                 break;
 902         default:
 903                 reason = "";
 904                 break;
 905         }
 906         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 907                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 908                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 909                                wpa_s->ifname, gtype, reason);
 910         }
 911
 912         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 913                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 914         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 915                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 916         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 917                                  wpa_s->parent, NULL) > 0) {
 918                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 919                            "timeout");
 920                 wpa_s->p2p_in_provisioning = 0;
 921                 wpas_p2p_group_formation_failed(wpa_s, 1);
 922         }
 923
 924         wpa_s->p2p_in_invitation = 0;
 925         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
 926         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
 927
 928         /*
 929          * Make sure wait for the first client does not remain active after the
 930          * group has been removed.
 931          */
 932         wpa_s->global->p2p_go_wait_client.sec = 0;
 933
 934         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 935                 struct wpa_global *global;
 936                 char *ifname;
 937                 enum wpa_driver_if_type type;
 938                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 939                         wpa_s->ifname);
 940                 global = wpa_s->global;
 941                 ifname = os_strdup(wpa_s->ifname);
 942                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 943                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 944                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 945                 wpa_s = global->ifaces;
 946                 if (wpa_s && ifname)
 947                         wpa_drv_if_remove(wpa_s, type, ifname);
 948                 os_free(ifname);
 949                 return 1;
 950         }
 951
 952         if (!wpa_s->p2p_go_group_formation_completed) {
 953                 wpa_s->global->p2p_group_formation = NULL;
 954                 wpa_s->p2p_in_provisioning = 0;
 955         }
 956
 957         wpa_s->show_group_started = 0;
 958         os_free(wpa_s->go_params);
 959         wpa_s->go_params = NULL;
 960
 961         os_free(wpa_s->p2p_group_common_freqs);
 962         wpa_s->p2p_group_common_freqs = NULL;
 963         wpa_s->p2p_group_common_freqs_num = 0;
 964
 965         wpa_s->waiting_presence_resp = 0;
 966
 967         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 968         if (ssid && (ssid->p2p_group ||
 969                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 970                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 971                 int id = ssid->id;
 972                 if (ssid == wpa_s->current_ssid) {
 973                         wpa_sm_set_config(wpa_s->wpa, NULL);
 974                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 975                         wpa_s->current_ssid = NULL;
 976                 }
 977                 /*
 978                  * Networks objects created during any P2P activities are not
 979                  * exposed out as they might/will confuse certain non-P2P aware
 980                  * applications since these network objects won't behave like
 981                  * regular ones.
 982                  *
 983                  * Likewise, we don't send out network removed signals for such
 984                  * network objects.
 985                  */
 986                 wpa_config_remove_network(wpa_s->conf, id);
 987                 wpa_supplicant_clear_status(wpa_s);
 988                 wpa_supplicant_cancel_sched_scan(wpa_s);
 989         } else {
 990                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 991                            "found");
 992         }
 993         if (wpa_s->ap_iface)
 994                 wpa_supplicant_ap_deinit(wpa_s);
 995         else
 996                 wpa_drv_deinit_p2p_cli(wpa_s);
 997
 998         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 999
1000         return 0;
1001 }
1002
1003
1004 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
1005                                      u8 *go_dev_addr,
1006                                      const u8 *ssid, size_t ssid_len)
1007 {
1008         struct wpa_bss *bss;
1009         const u8 *bssid;
1010         struct wpabuf *p2p;
1011         u8 group_capab;
1012         const u8 *addr;
1013
1014         if (wpa_s->go_params)
1015                 bssid = wpa_s->go_params->peer_interface_addr;
1016         else
1017                 bssid = wpa_s->bssid;
1018
1019         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
1020         if (bss == NULL && wpa_s->go_params &&
1021             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
1022                 bss = wpa_bss_get_p2p_dev_addr(
1023                         wpa_s, wpa_s->go_params->peer_device_addr);
1024         if (bss == NULL) {
1025                 u8 iface_addr[ETH_ALEN];
1026                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1027                                            iface_addr) == 0)
1028                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1029         }
1030         if (bss == NULL) {
1031                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1032                            "group is persistent - BSS " MACSTR " not found",
1033                            MAC2STR(bssid));
1034                 return 0;
1035         }
1036
1037         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1038         if (p2p == NULL)
1039                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1040                                                          P2P_IE_VENDOR_TYPE);
1041         if (p2p == NULL) {
1042                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1043                            "group is persistent - BSS " MACSTR
1044                            " did not include P2P IE", MAC2STR(bssid));
1045                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1046                             (u8 *) (bss + 1), bss->ie_len);
1047                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1048                             ((u8 *) bss + 1) + bss->ie_len,
1049                             bss->beacon_ie_len);
1050                 return 0;
1051         }
1052
1053         group_capab = p2p_get_group_capab(p2p);
1054         addr = p2p_get_go_dev_addr(p2p);
1055         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1056                    "group_capab=0x%x", group_capab);
1057         if (addr) {
1058                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1059                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1060                            MAC2STR(addr));
1061         } else
1062                 os_memset(go_dev_addr, 0, ETH_ALEN);
1063         wpabuf_free(p2p);
1064
1065         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1066                    "go_dev_addr=" MACSTR,
1067                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1068
1069         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1070 }
1071
1072
1073 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1074                                            struct wpa_ssid *ssid,
1075                                            const u8 *go_dev_addr)
1076 {
1077         struct wpa_ssid *s;
1078         int changed = 0;
1079
1080         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1081                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1082         for (s = wpa_s->conf->ssid; s; s = s->next) {
1083                 if (s->disabled == 2 &&
1084                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1085                     s->ssid_len == ssid->ssid_len &&
1086                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1087                         break;
1088         }
1089
1090         if (s) {
1091                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1092                            "entry");
1093                 if (ssid->passphrase && !s->passphrase)
1094                         changed = 1;
1095                 else if (ssid->passphrase && s->passphrase &&
1096                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1097                         changed = 1;
1098         } else {
1099                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1100                            "entry");
1101                 changed = 1;
1102                 s = wpa_config_add_network(wpa_s->conf);
1103                 if (s == NULL)
1104                         return -1;
1105
1106                 /*
1107                  * Instead of network_added we emit persistent_group_added
1108                  * notification. Also to keep the defense checks in
1109                  * persistent_group obj registration method, we set the
1110                  * relevant flags in s to designate it as a persistent group.
1111                  */
1112                 s->p2p_group = 1;
1113                 s->p2p_persistent_group = 1;
1114                 wpas_notify_persistent_group_added(wpa_s, s);
1115                 wpa_config_set_network_defaults(s);
1116         }
1117
1118         s->p2p_group = 1;
1119         s->p2p_persistent_group = 1;
1120         s->disabled = 2;
1121         s->bssid_set = 1;
1122         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1123         s->mode = ssid->mode;
1124         s->auth_alg = WPA_AUTH_ALG_OPEN;
1125         s->key_mgmt = WPA_KEY_MGMT_PSK;
1126         s->proto = WPA_PROTO_RSN;
1127         s->pairwise_cipher = WPA_CIPHER_CCMP;
1128         s->export_keys = 1;
1129         if (ssid->passphrase) {
1130                 os_free(s->passphrase);
1131                 s->passphrase = os_strdup(ssid->passphrase);
1132         }
1133         if (ssid->psk_set) {
1134                 s->psk_set = 1;
1135                 os_memcpy(s->psk, ssid->psk, 32);
1136         }
1137         if (s->passphrase && !s->psk_set)
1138                 wpa_config_update_psk(s);
1139         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1140                 os_free(s->ssid);
1141                 s->ssid = os_malloc(ssid->ssid_len);
1142         }
1143         if (s->ssid) {
1144                 s->ssid_len = ssid->ssid_len;
1145                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1146         }
1147         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1148                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1149                 wpa_s->global->add_psk = NULL;
1150                 changed = 1;
1151         }
1152
1153         if (changed && wpa_s->conf->update_config &&
1154             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1155                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1156         }
1157
1158         return s->id;
1159 }
1160
1161
1162 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1163                                                  const u8 *addr)
1164 {
1165         struct wpa_ssid *ssid, *s;
1166         u8 *n;
1167         size_t i;
1168         int found = 0;
1169         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1170
1171         ssid = wpa_s->current_ssid;
1172         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1173             !ssid->p2p_persistent_group)
1174                 return;
1175
1176         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1177                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1178                         continue;
1179
1180                 if (s->ssid_len == ssid->ssid_len &&
1181                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1182                         break;
1183         }
1184
1185         if (s == NULL)
1186                 return;
1187
1188         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1189                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1190                               ETH_ALEN) != 0)
1191                         continue;
1192
1193                 if (i == s->num_p2p_clients - 1)
1194                         return; /* already the most recent entry */
1195
1196                 /* move the entry to mark it most recent */
1197                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1198                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1199                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1200                 os_memcpy(s->p2p_client_list +
1201                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1202                           ETH_ALEN);
1203                 os_memset(s->p2p_client_list +
1204                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1205                           0xff, ETH_ALEN);
1206                 found = 1;
1207                 break;
1208         }
1209
1210         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1211                 n = os_realloc_array(s->p2p_client_list,
1212                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1213                 if (n == NULL)
1214                         return;
1215                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1216                           ETH_ALEN);
1217                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1218                           0xff, ETH_ALEN);
1219                 s->p2p_client_list = n;
1220                 s->num_p2p_clients++;
1221         } else if (!found && s->p2p_client_list) {
1222                 /* Not enough room for an additional entry - drop the oldest
1223                  * entry */
1224                 os_memmove(s->p2p_client_list,
1225                            s->p2p_client_list + 2 * ETH_ALEN,
1226                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1227                 os_memcpy(s->p2p_client_list +
1228                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1229                           addr, ETH_ALEN);
1230                 os_memset(s->p2p_client_list +
1231                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1232                           0xff, ETH_ALEN);
1233         }
1234
1235         if (p2p_wpa_s->conf->update_config &&
1236             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1237                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1238 }
1239
1240
1241 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1242                                    int go, struct wpa_ssid *ssid, int freq,
1243                                    const u8 *psk, const char *passphrase,
1244                                    const u8 *go_dev_addr, int persistent,
1245                                    const char *extra)
1246 {
1247         const char *ssid_txt;
1248         char psk_txt[65];
1249
1250         if (psk)
1251                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1252         else
1253                 psk_txt[0] = '\0';
1254
1255         if (ssid)
1256                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1257         else
1258                 ssid_txt = "";
1259
1260         if (passphrase && passphrase[0] == '\0')
1261                 passphrase = NULL;
1262
1263         /*
1264          * Include PSK/passphrase only in the control interface message and
1265          * leave it out from the debug log entry.
1266          */
1267         wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
1268                             P2P_EVENT_GROUP_STARTED
1269                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1270                             MACSTR "%s%s",
1271                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1272                             psk ? " psk=" : "", psk_txt,
1273                             passphrase ? " passphrase=\"" : "",
1274                             passphrase ? passphrase : "",
1275                             passphrase ? "\"" : "",
1276                             MAC2STR(go_dev_addr),
1277                             persistent ? " [PERSISTENT]" : "", extra);
1278         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1279                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1280                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1281                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1282                    extra);
1283 }
1284
1285
1286 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1287                                            int success, int already_deleted)
1288 {
1289         struct wpa_ssid *ssid;
1290         int client;
1291         int persistent;
1292         u8 go_dev_addr[ETH_ALEN];
1293         int network_id = -1;
1294
1295         /*
1296          * This callback is likely called for the main interface. Update wpa_s
1297          * to use the group interface if a new interface was created for the
1298          * group.
1299          */
1300         if (wpa_s->global->p2p_group_formation)
1301                 wpa_s = wpa_s->global->p2p_group_formation;
1302         if (wpa_s->p2p_go_group_formation_completed) {
1303                 wpa_s->global->p2p_group_formation = NULL;
1304                 wpa_s->p2p_in_provisioning = 0;
1305         }
1306         wpa_s->p2p_in_invitation = 0;
1307         wpa_s->group_formation_reported = 1;
1308
1309         if (!success) {
1310                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1311                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1312                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
1313                 if (already_deleted)
1314                         return;
1315                 wpas_p2p_group_delete(wpa_s,
1316                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1317                 return;
1318         }
1319
1320         wpa_msg_global(wpa_s->parent, MSG_INFO,
1321                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1322
1323         ssid = wpa_s->current_ssid;
1324         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1325                 ssid->mode = WPAS_MODE_P2P_GO;
1326                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1327                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1328         }
1329
1330         persistent = 0;
1331         if (ssid) {
1332                 client = ssid->mode == WPAS_MODE_INFRA;
1333                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1334                         persistent = ssid->p2p_persistent_group;
1335                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1336                                   ETH_ALEN);
1337                 } else
1338                         persistent = wpas_p2p_persistent_group(wpa_s,
1339                                                                go_dev_addr,
1340                                                                ssid->ssid,
1341                                                                ssid->ssid_len);
1342         } else {
1343                 client = wpa_s->p2p_group_interface ==
1344                         P2P_GROUP_INTERFACE_CLIENT;
1345                 os_memset(go_dev_addr, 0, ETH_ALEN);
1346         }
1347
1348         wpa_s->show_group_started = 0;
1349         if (client) {
1350                 /*
1351                  * Indicate event only after successfully completed 4-way
1352                  * handshake, i.e., when the interface is ready for data
1353                  * packets.
1354                  */
1355                 wpa_s->show_group_started = 1;
1356         } else {
1357                 wpas_p2p_group_started(wpa_s, 1, ssid,
1358                                        ssid ? ssid->frequency : 0,
1359                                        ssid && ssid->passphrase == NULL &&
1360                                        ssid->psk_set ? ssid->psk : NULL,
1361                                        ssid ? ssid->passphrase : NULL,
1362                                        go_dev_addr, persistent, "");
1363                 wpas_p2p_cross_connect_setup(wpa_s);
1364                 wpas_p2p_set_group_idle_timeout(wpa_s);
1365         }
1366
1367         if (persistent)
1368                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
1369                                                              ssid, go_dev_addr);
1370         else {
1371                 os_free(wpa_s->global->add_psk);
1372                 wpa_s->global->add_psk = NULL;
1373         }
1374         if (network_id < 0 && ssid)
1375                 network_id = ssid->id;
1376         if (!client) {
1377                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1378                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1379         }
1380 }
1381
1382
1383 struct send_action_work {
1384         unsigned int freq;
1385         u8 dst[ETH_ALEN];
1386         u8 src[ETH_ALEN];
1387         u8 bssid[ETH_ALEN];
1388         size_t len;
1389         unsigned int wait_time;
1390         u8 buf[0];
1391 };
1392
1393
1394 static void wpas_p2p_free_send_action_work(struct wpa_supplicant *wpa_s)
1395 {
1396         struct send_action_work *awork = wpa_s->p2p_send_action_work->ctx;
1397
1398         wpa_printf(MSG_DEBUG,
1399                    "P2P: Free Action frame radio work @%p (freq=%u dst="
1400                    MACSTR " src=" MACSTR " bssid=" MACSTR " wait_time=%u)",
1401                    wpa_s->p2p_send_action_work, awork->freq,
1402                    MAC2STR(awork->dst), MAC2STR(awork->src),
1403                    MAC2STR(awork->bssid), awork->wait_time);
1404         wpa_hexdump(MSG_DEBUG, "P2P: Freeing pending Action frame",
1405                     awork->buf, awork->len);
1406         os_free(awork);
1407         wpa_s->p2p_send_action_work->ctx = NULL;
1408         radio_work_done(wpa_s->p2p_send_action_work);
1409         wpa_s->p2p_send_action_work = NULL;
1410 }
1411
1412
1413 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1414                                               void *timeout_ctx)
1415 {
1416         struct wpa_supplicant *wpa_s = eloop_ctx;
1417
1418         if (!wpa_s->p2p_send_action_work)
1419                 return;
1420
1421         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1422         wpas_p2p_free_send_action_work(wpa_s);
1423 }
1424
1425
1426 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1427 {
1428         if (wpa_s->p2p_send_action_work) {
1429                 struct send_action_work *awork;
1430
1431                 awork = wpa_s->p2p_send_action_work->ctx;
1432                 wpa_printf(MSG_DEBUG,
1433                            "P2P: Clear Action TX work @%p (wait_time=%u)",
1434                            wpa_s->p2p_send_action_work, awork->wait_time);
1435                 if (awork->wait_time == 0) {
1436                         wpas_p2p_free_send_action_work(wpa_s);
1437                 } else {
1438                         /*
1439                          * In theory, this should not be needed, but number of
1440                          * places in the P2P code is still using non-zero wait
1441                          * time for the last Action frame in the sequence and
1442                          * some of these do not call send_action_done().
1443                          */
1444                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1445                                              wpa_s, NULL);
1446                         eloop_register_timeout(
1447                                 0, awork->wait_time * 1000,
1448                                 wpas_p2p_send_action_work_timeout,
1449                                 wpa_s, NULL);
1450                 }
1451         }
1452 }
1453
1454
1455 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1456                                            unsigned int freq,
1457                                            const u8 *dst, const u8 *src,
1458                                            const u8 *bssid,
1459                                            const u8 *data, size_t data_len,
1460                                            enum offchannel_send_action_result
1461                                            result)
1462 {
1463         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1464
1465         wpas_p2p_action_tx_clear(wpa_s);
1466
1467         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1468                 return;
1469
1470         switch (result) {
1471         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1472                 res = P2P_SEND_ACTION_SUCCESS;
1473                 break;
1474         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1475                 res = P2P_SEND_ACTION_NO_ACK;
1476                 break;
1477         case OFFCHANNEL_SEND_ACTION_FAILED:
1478                 res = P2P_SEND_ACTION_FAILED;
1479                 break;
1480         }
1481
1482         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1483
1484         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1485             wpa_s->pending_pd_before_join &&
1486             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1487              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1488             wpa_s->p2p_fallback_to_go_neg) {
1489                 wpa_s->pending_pd_before_join = 0;
1490                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1491                         "during p2p_connect-auto");
1492                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1493                                P2P_EVENT_FALLBACK_TO_GO_NEG
1494                                "reason=no-ACK-to-PD-Req");
1495                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1496                 return;
1497         }
1498 }
1499
1500
1501 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1502 {
1503         struct wpa_supplicant *wpa_s = work->wpa_s;
1504         struct send_action_work *awork = work->ctx;
1505
1506         if (deinit) {
1507                 if (work->started) {
1508                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1509                                              wpa_s, NULL);
1510                         wpa_s->p2p_send_action_work = NULL;
1511                         offchannel_send_action_done(wpa_s);
1512                 }
1513                 os_free(awork);
1514                 return;
1515         }
1516
1517         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1518                                    awork->bssid, awork->buf, awork->len,
1519                                    awork->wait_time,
1520                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1521                 os_free(awork);
1522                 radio_work_done(work);
1523                 return;
1524         }
1525         wpa_s->p2p_send_action_work = work;
1526 }
1527
1528
1529 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1530                                  unsigned int freq, const u8 *dst,
1531                                  const u8 *src, const u8 *bssid, const u8 *buf,
1532                                  size_t len, unsigned int wait_time)
1533 {
1534         struct send_action_work *awork;
1535
1536         if (wpa_s->p2p_send_action_work) {
1537                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1538                 return -1;
1539         }
1540
1541         awork = os_zalloc(sizeof(*awork) + len);
1542         if (awork == NULL)
1543                 return -1;
1544
1545         awork->freq = freq;
1546         os_memcpy(awork->dst, dst, ETH_ALEN);
1547         os_memcpy(awork->src, src, ETH_ALEN);
1548         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1549         awork->len = len;
1550         awork->wait_time = wait_time;
1551         os_memcpy(awork->buf, buf, len);
1552
1553         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1554                            wpas_send_action_cb, awork) < 0) {
1555                 os_free(awork);
1556                 return -1;
1557         }
1558
1559         return 0;
1560 }
1561
1562
1563 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1564                             const u8 *src, const u8 *bssid, const u8 *buf,
1565                             size_t len, unsigned int wait_time)
1566 {
1567         struct wpa_supplicant *wpa_s = ctx;
1568         int listen_freq = -1, send_freq = -1;
1569
1570         if (wpa_s->p2p_listen_work)
1571                 listen_freq = wpa_s->p2p_listen_work->freq;
1572         if (wpa_s->p2p_send_action_work)
1573                 send_freq = wpa_s->p2p_send_action_work->freq;
1574         if (listen_freq != (int) freq && send_freq != (int) freq) {
1575                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1576                            listen_freq, send_freq);
1577                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1578                                              len, wait_time);
1579         }
1580
1581         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1582         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1583                                       wait_time,
1584                                       wpas_p2p_send_action_tx_status, 1);
1585 }
1586
1587
1588 static void wpas_send_action_done(void *ctx)
1589 {
1590         struct wpa_supplicant *wpa_s = ctx;
1591
1592         if (wpa_s->p2p_send_action_work) {
1593                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1594                                      wpa_s, NULL);
1595                 os_free(wpa_s->p2p_send_action_work->ctx);
1596                 radio_work_done(wpa_s->p2p_send_action_work);
1597                 wpa_s->p2p_send_action_work = NULL;
1598         }
1599
1600         offchannel_send_action_done(wpa_s);
1601 }
1602
1603
1604 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1605                                     struct p2p_go_neg_results *params)
1606 {
1607         if (wpa_s->go_params == NULL) {
1608                 wpa_s->go_params = os_malloc(sizeof(*params));
1609                 if (wpa_s->go_params == NULL)
1610                         return -1;
1611         }
1612         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1613         return 0;
1614 }
1615
1616
1617 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1618                                     struct p2p_go_neg_results *res)
1619 {
1620         wpa_s->group_formation_reported = 0;
1621         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1622                    " dev_addr " MACSTR " wps_method %d",
1623                    MAC2STR(res->peer_interface_addr),
1624                    MAC2STR(res->peer_device_addr), res->wps_method);
1625         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1626                           res->ssid, res->ssid_len);
1627         wpa_supplicant_ap_deinit(wpa_s);
1628         wpas_copy_go_neg_results(wpa_s, res);
1629         if (res->wps_method == WPS_PBC) {
1630                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1631 #ifdef CONFIG_WPS_NFC
1632         } else if (res->wps_method == WPS_NFC) {
1633                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1634                                    res->peer_interface_addr,
1635                                    wpa_s->parent->p2p_oob_dev_pw,
1636                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1637                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1638                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1639                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1640                                    NULL,
1641                                    NULL, 0, 0);
1642 #endif /* CONFIG_WPS_NFC */
1643         } else {
1644                 u16 dev_pw_id = DEV_PW_DEFAULT;
1645                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1646                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1647                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1648                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1649                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1650                                    wpa_s->p2p_pin, 1, dev_pw_id);
1651         }
1652 }
1653
1654
1655 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1656                                   struct wpa_ssid *ssid)
1657 {
1658         struct wpa_ssid *persistent;
1659         struct psk_list_entry *psk;
1660         struct hostapd_data *hapd;
1661
1662         if (!wpa_s->ap_iface)
1663                 return;
1664
1665         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1666                                              ssid->ssid_len);
1667         if (persistent == NULL)
1668                 return;
1669
1670         hapd = wpa_s->ap_iface->bss[0];
1671
1672         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1673                          list) {
1674                 struct hostapd_wpa_psk *hpsk;
1675
1676                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1677                         MACSTR " psk=%d",
1678                         MAC2STR(psk->addr), psk->p2p);
1679                 hpsk = os_zalloc(sizeof(*hpsk));
1680                 if (hpsk == NULL)
1681                         break;
1682                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1683                 if (psk->p2p)
1684                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1685                 else
1686                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1687                 hpsk->next = hapd->conf->ssid.wpa_psk;
1688                 hapd->conf->ssid.wpa_psk = hpsk;
1689         }
1690 }
1691
1692
1693 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1694 {
1695         unsigned int i;
1696
1697         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1698                 wpa_s->p2p_group_common_freqs_num);
1699
1700         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1701                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1702                         i, wpa_s->p2p_group_common_freqs[i]);
1703 }
1704
1705
1706 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1707                                            struct p2p_go_neg_results *params)
1708 {
1709         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1710
1711         wpa_s->p2p_group_common_freqs_num = 0;
1712         os_free(wpa_s->p2p_group_common_freqs);
1713         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1714         if (!wpa_s->p2p_group_common_freqs)
1715                 return;
1716
1717         for (i = 0; i < len; i++) {
1718                 if (!wpa_s->go_params->freq_list[i])
1719                         break;
1720                 wpa_s->p2p_group_common_freqs[i] =
1721                         wpa_s->go_params->freq_list[i];
1722         }
1723         wpa_s->p2p_group_common_freqs_num = i;
1724 }
1725
1726
1727 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1728 {
1729 #ifndef CONFIG_NO_CONFIG_WRITE
1730         if (wpa_s->parent->conf->update_config &&
1731             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1732                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1733 #endif /* CONFIG_NO_CONFIG_WRITE */
1734 }
1735
1736
1737 static void p2p_go_configured(void *ctx, void *data)
1738 {
1739         struct wpa_supplicant *wpa_s = ctx;
1740         struct p2p_go_neg_results *params = data;
1741         struct wpa_ssid *ssid;
1742         int network_id = -1;
1743
1744         wpa_s->ap_configured_cb = NULL;
1745         wpa_s->ap_configured_cb_ctx = NULL;
1746         wpa_s->ap_configured_cb_data = NULL;
1747         if (!wpa_s->go_params) {
1748                 wpa_printf(MSG_ERROR,
1749                            "P2P: p2p_go_configured() called with wpa_s->go_params == NULL");
1750                 return;
1751         }
1752
1753         p2p_go_save_group_common_freqs(wpa_s, params);
1754         p2p_go_dump_common_freqs(wpa_s);
1755
1756         ssid = wpa_s->current_ssid;
1757         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1758                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1759                 if (wpa_s->global->p2p_group_formation == wpa_s)
1760                         wpa_s->global->p2p_group_formation = NULL;
1761                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1762                                        params->passphrase[0] == '\0' ?
1763                                        params->psk : NULL,
1764                                        params->passphrase,
1765                                        wpa_s->global->p2p_dev_addr,
1766                                        params->persistent_group, "");
1767                 wpa_s->group_formation_reported = 1;
1768
1769                 if (wpa_s->parent->p2ps_method_config_any) {
1770                         if (is_zero_ether_addr(wpa_s->parent->p2ps_join_addr)) {
1771                                 wpa_dbg(wpa_s, MSG_DEBUG,
1772                                         "P2PS: Setting default PIN for ANY");
1773                                 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1774                                                           "12345670", NULL, 0,
1775                                                           0);
1776                         } else {
1777                                 wpa_dbg(wpa_s, MSG_DEBUG,
1778                                         "P2PS: Setting default PIN for " MACSTR,
1779                                         MAC2STR(wpa_s->parent->p2ps_join_addr));
1780                                 wpa_supplicant_ap_wps_pin(
1781                                         wpa_s, wpa_s->parent->p2ps_join_addr,
1782                                         "12345670", NULL, 0, 0);
1783                         }
1784                         wpa_s->parent->p2ps_method_config_any = 0;
1785                 }
1786
1787                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1788                 if (params->persistent_group) {
1789                         network_id = wpas_p2p_store_persistent_group(
1790                                 wpa_s->parent, ssid,
1791                                 wpa_s->global->p2p_dev_addr);
1792                         wpas_p2p_add_psk_list(wpa_s, ssid);
1793                 }
1794                 if (network_id < 0)
1795                         network_id = ssid->id;
1796                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1797                 wpas_p2p_cross_connect_setup(wpa_s);
1798                 wpas_p2p_set_group_idle_timeout(wpa_s);
1799
1800                 if (wpa_s->p2p_first_connection_timeout) {
1801                         wpa_dbg(wpa_s, MSG_DEBUG,
1802                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1803                                 wpa_s->p2p_first_connection_timeout);
1804                         wpa_s->p2p_go_group_formation_completed = 0;
1805                         wpa_s->global->p2p_group_formation = wpa_s;
1806                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1807                                              wpa_s->parent, NULL);
1808                         eloop_register_timeout(
1809                                 wpa_s->p2p_first_connection_timeout, 0,
1810                                 wpas_p2p_group_formation_timeout,
1811                                 wpa_s->parent, NULL);
1812                 }
1813
1814                 return;
1815         }
1816
1817         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1818         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1819                                               params->peer_interface_addr)) {
1820                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1821                            "filtering");
1822                 return;
1823         }
1824         if (params->wps_method == WPS_PBC) {
1825                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1826                                           params->peer_device_addr);
1827 #ifdef CONFIG_WPS_NFC
1828         } else if (params->wps_method == WPS_NFC) {
1829                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1830                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1831                     !wpa_s->parent->p2p_oob_dev_pw) {
1832                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1833                         return;
1834                 }
1835                 wpas_ap_wps_add_nfc_pw(
1836                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1837                         wpa_s->parent->p2p_oob_dev_pw,
1838                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1839                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1840 #endif /* CONFIG_WPS_NFC */
1841         } else if (wpa_s->p2p_pin[0])
1842                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1843                                           wpa_s->p2p_pin, NULL, 0, 0);
1844         os_free(wpa_s->go_params);
1845         wpa_s->go_params = NULL;
1846 }
1847
1848
1849 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1850                               struct p2p_go_neg_results *params,
1851                               int group_formation)
1852 {
1853         struct wpa_ssid *ssid;
1854
1855         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1856         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1857                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1858                         "results");
1859                 return;
1860         }
1861
1862         ssid = wpa_config_add_network(wpa_s->conf);
1863         if (ssid == NULL) {
1864                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1865                 return;
1866         }
1867
1868         wpa_s->show_group_started = 0;
1869         wpa_s->p2p_go_group_formation_completed = 0;
1870         wpa_s->group_formation_reported = 0;
1871         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1872
1873         wpa_config_set_network_defaults(ssid);
1874         ssid->temporary = 1;
1875         ssid->p2p_group = 1;
1876         ssid->p2p_persistent_group = params->persistent_group;
1877         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1878                 WPAS_MODE_P2P_GO;
1879         ssid->frequency = params->freq;
1880         ssid->ht40 = params->ht40;
1881         ssid->vht = params->vht;
1882         ssid->max_oper_chwidth = params->max_oper_chwidth;
1883         ssid->vht_center_freq2 = params->vht_center_freq2;
1884         ssid->ssid = os_zalloc(params->ssid_len + 1);
1885         if (ssid->ssid) {
1886                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1887                 ssid->ssid_len = params->ssid_len;
1888         }
1889         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1890         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1891         ssid->proto = WPA_PROTO_RSN;
1892         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1893         ssid->group_cipher = WPA_CIPHER_CCMP;
1894         if (params->freq > 56160) {
1895                 /*
1896                  * Enable GCMP instead of CCMP as pairwise_cipher and
1897                  * group_cipher in 60 GHz.
1898                  */
1899                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1900                 ssid->group_cipher = WPA_CIPHER_GCMP;
1901                 /* P2P GO in 60 GHz is always a PCP (PBSS) */
1902                 ssid->pbss = 1;
1903         }
1904         if (os_strlen(params->passphrase) > 0) {
1905                 ssid->passphrase = os_strdup(params->passphrase);
1906                 if (ssid->passphrase == NULL) {
1907                         wpa_msg_global(wpa_s, MSG_ERROR,
1908                                        "P2P: Failed to copy passphrase for GO");
1909                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1910                         return;
1911                 }
1912         } else
1913                 ssid->passphrase = NULL;
1914         ssid->psk_set = params->psk_set;
1915         if (ssid->psk_set)
1916                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1917         else if (ssid->passphrase)
1918                 wpa_config_update_psk(ssid);
1919         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1920
1921         wpa_s->ap_configured_cb = p2p_go_configured;
1922         wpa_s->ap_configured_cb_ctx = wpa_s;
1923         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1924         wpa_s->scan_req = NORMAL_SCAN_REQ;
1925         wpa_s->connect_without_scan = ssid;
1926         wpa_s->reassociate = 1;
1927         wpa_s->disconnected = 0;
1928         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1929                 "start GO)");
1930         wpa_supplicant_req_scan(wpa_s, 0, 0);
1931 }
1932
1933
1934 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1935                                   const struct wpa_supplicant *src)
1936 {
1937         struct wpa_config *d;
1938         const struct wpa_config *s;
1939
1940         d = dst->conf;
1941         s = src->conf;
1942
1943 #define C(n) if (s->n) d->n = os_strdup(s->n)
1944         C(device_name);
1945         C(manufacturer);
1946         C(model_name);
1947         C(model_number);
1948         C(serial_number);
1949         C(config_methods);
1950 #undef C
1951
1952         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1953         os_memcpy(d->sec_device_type, s->sec_device_type,
1954                   sizeof(d->sec_device_type));
1955         d->num_sec_device_types = s->num_sec_device_types;
1956
1957         d->p2p_group_idle = s->p2p_group_idle;
1958         d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
1959         d->p2p_intra_bss = s->p2p_intra_bss;
1960         d->persistent_reconnect = s->persistent_reconnect;
1961         d->max_num_sta = s->max_num_sta;
1962         d->pbc_in_m1 = s->pbc_in_m1;
1963         d->ignore_old_scan_res = s->ignore_old_scan_res;
1964         d->beacon_int = s->beacon_int;
1965         d->dtim_period = s->dtim_period;
1966         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1967         d->disassoc_low_ack = s->disassoc_low_ack;
1968         d->disable_scan_offload = s->disable_scan_offload;
1969         d->passive_scan = s->passive_scan;
1970
1971         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1972                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1973                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1974         }
1975         d->p2p_cli_probe = s->p2p_cli_probe;
1976 }
1977
1978
1979 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1980                                       char *ifname, size_t len)
1981 {
1982         char *ifname_ptr = wpa_s->ifname;
1983
1984         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1985                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1986                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1987         }
1988
1989         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1990         if (os_strlen(ifname) >= IFNAMSIZ &&
1991             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1992                 int res;
1993
1994                 /* Try to avoid going over the IFNAMSIZ length limit */
1995                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1996                 if (os_snprintf_error(len, res) && len)
1997                         ifname[len - 1] = '\0';
1998         }
1999 }
2000
2001
2002 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
2003                                         enum wpa_driver_if_type type)
2004 {
2005         char ifname[120], force_ifname[120];
2006
2007         if (wpa_s->pending_interface_name[0]) {
2008                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
2009                            "- skip creation of a new one");
2010                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
2011                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
2012                                    "unknown?! ifname='%s'",
2013                                    wpa_s->pending_interface_name);
2014                         return -1;
2015                 }
2016                 return 0;
2017         }
2018
2019         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
2020         force_ifname[0] = '\0';
2021
2022         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
2023                    ifname);
2024         wpa_s->p2p_group_idx++;
2025
2026         wpa_s->pending_interface_type = type;
2027         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
2028                            wpa_s->pending_interface_addr, NULL) < 0) {
2029                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
2030                            "interface");
2031                 return -1;
2032         }
2033
2034         if (force_ifname[0]) {
2035                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
2036                            force_ifname);
2037                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
2038                            sizeof(wpa_s->pending_interface_name));
2039         } else
2040                 os_strlcpy(wpa_s->pending_interface_name, ifname,
2041                            sizeof(wpa_s->pending_interface_name));
2042         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
2043                    MACSTR, wpa_s->pending_interface_name,
2044                    MAC2STR(wpa_s->pending_interface_addr));
2045
2046         return 0;
2047 }
2048
2049
2050 static void wpas_p2p_remove_pending_group_interface(
2051         struct wpa_supplicant *wpa_s)
2052 {
2053         if (!wpa_s->pending_interface_name[0] ||
2054             is_zero_ether_addr(wpa_s->pending_interface_addr))
2055                 return; /* No pending virtual interface */
2056
2057         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2058                    wpa_s->pending_interface_name);
2059         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2060                           wpa_s->pending_interface_name);
2061         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2062         wpa_s->pending_interface_name[0] = '\0';
2063         wpa_s->global->pending_group_iface_for_p2ps = 0;
2064 }
2065
2066
2067 static struct wpa_supplicant *
2068 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2069 {
2070         struct wpa_interface iface;
2071         struct wpa_supplicant *group_wpa_s;
2072
2073         if (!wpa_s->pending_interface_name[0]) {
2074                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2075                 if (!wpas_p2p_create_iface(wpa_s))
2076                         return NULL;
2077                 /*
2078                  * Something has forced us to remove the pending interface; try
2079                  * to create a new one and hope for the best that we will get
2080                  * the same local address.
2081                  */
2082                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2083                                                  WPA_IF_P2P_CLIENT) < 0)
2084                         return NULL;
2085         }
2086
2087         os_memset(&iface, 0, sizeof(iface));
2088         iface.ifname = wpa_s->pending_interface_name;
2089         iface.driver = wpa_s->driver->name;
2090         if (wpa_s->conf->ctrl_interface == NULL &&
2091             wpa_s->parent != wpa_s &&
2092             wpa_s->p2p_mgmt &&
2093             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2094                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2095         else
2096                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2097         iface.driver_param = wpa_s->conf->driver_param;
2098         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2099         if (group_wpa_s == NULL) {
2100                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2101                            "wpa_supplicant interface");
2102                 return NULL;
2103         }
2104         wpa_s->pending_interface_name[0] = '\0';
2105         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2106                 P2P_GROUP_INTERFACE_CLIENT;
2107         wpa_s->global->p2p_group_formation = group_wpa_s;
2108         wpa_s->global->pending_group_iface_for_p2ps = 0;
2109
2110         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2111
2112         return group_wpa_s;
2113 }
2114
2115
2116 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2117                                              void *timeout_ctx)
2118 {
2119         struct wpa_supplicant *wpa_s = eloop_ctx;
2120         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2121         wpas_p2p_group_formation_failed(wpa_s, 0);
2122 }
2123
2124
2125 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2126                                             int already_deleted)
2127 {
2128         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2129                              wpa_s->parent, NULL);
2130         if (wpa_s->global->p2p)
2131                 p2p_group_formation_failed(wpa_s->global->p2p);
2132         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2133 }
2134
2135
2136 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2137 {
2138         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2139         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2140                              wpa_s->parent, NULL);
2141         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2142                                wpa_s->parent, NULL);
2143         wpa_s->global->p2p_fail_on_wps_complete = 0;
2144 }
2145
2146
2147 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2148 {
2149         if (wpa_s->global->p2p_group_formation != wpa_s)
2150                 return;
2151         /* Speed up group formation timeout since this cannot succeed */
2152         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2153                              wpa_s->parent, NULL);
2154         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2155                                wpa_s->parent, NULL);
2156 }
2157
2158
2159 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2160 {
2161         struct wpa_supplicant *wpa_s = ctx;
2162
2163         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2164                 wpa_drv_cancel_remain_on_channel(wpa_s);
2165                 wpa_s->off_channel_freq = 0;
2166                 wpa_s->roc_waiting_drv_freq = 0;
2167         }
2168
2169         if (res->status) {
2170                 wpa_msg_global(wpa_s, MSG_INFO,
2171                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2172                                res->status);
2173                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2174                 wpas_p2p_remove_pending_group_interface(wpa_s);
2175                 return;
2176         }
2177
2178         if (!res->role_go) {
2179                 /* Inform driver of the operating channel of GO. */
2180                 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2181         }
2182
2183         if (wpa_s->p2p_go_ht40)
2184                 res->ht40 = 1;
2185         if (wpa_s->p2p_go_vht)
2186                 res->vht = 1;
2187         res->max_oper_chwidth = wpa_s->p2p_go_max_oper_chwidth;
2188         res->vht_center_freq2 = wpa_s->p2p_go_vht_center_freq2;
2189
2190         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2191                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2192                        " wps_method=%s",
2193                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2194                        MAC2STR(res->peer_device_addr),
2195                        MAC2STR(res->peer_interface_addr),
2196                        p2p_wps_method_text(res->wps_method));
2197         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2198
2199         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2200                 struct wpa_ssid *ssid;
2201                 ssid = wpa_config_get_network(wpa_s->conf,
2202                                               wpa_s->p2p_persistent_id);
2203                 if (ssid && ssid->disabled == 2 &&
2204                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2205                         size_t len = os_strlen(ssid->passphrase);
2206                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2207                                    "on requested persistent group");
2208                         os_memcpy(res->passphrase, ssid->passphrase, len);
2209                         res->passphrase[len] = '\0';
2210                 }
2211         }
2212
2213         if (wpa_s->create_p2p_iface) {
2214                 struct wpa_supplicant *group_wpa_s =
2215                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2216                 if (group_wpa_s == NULL) {
2217                         wpas_p2p_remove_pending_group_interface(wpa_s);
2218                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2219                                              wpa_s, NULL);
2220                         wpas_p2p_group_formation_failed(wpa_s, 1);
2221                         return;
2222                 }
2223                 if (group_wpa_s != wpa_s) {
2224                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2225                                   sizeof(group_wpa_s->p2p_pin));
2226                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2227                 }
2228                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2229                 wpa_s->pending_interface_name[0] = '\0';
2230                 group_wpa_s->p2p_in_provisioning = 1;
2231
2232                 if (res->role_go) {
2233                         wpas_start_wps_go(group_wpa_s, res, 1);
2234                 } else {
2235                         os_get_reltime(&group_wpa_s->scan_min_time);
2236                         wpas_start_wps_enrollee(group_wpa_s, res);
2237                 }
2238         } else {
2239                 wpa_s->p2p_in_provisioning = 1;
2240                 wpa_s->global->p2p_group_formation = wpa_s;
2241
2242                 if (res->role_go) {
2243                         wpas_start_wps_go(wpa_s, res, 1);
2244                 } else {
2245                         os_get_reltime(&wpa_s->scan_min_time);
2246                         wpas_start_wps_enrollee(ctx, res);
2247                 }
2248         }
2249
2250         wpa_s->p2p_long_listen = 0;
2251         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2252
2253         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2254         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2255                                (res->peer_config_timeout % 100) * 10000,
2256                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2257 }
2258
2259
2260 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2261                                u8 go_intent)
2262 {
2263         struct wpa_supplicant *wpa_s = ctx;
2264         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2265                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2266                        dev_passwd_id, go_intent);
2267
2268         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2269 }
2270
2271
2272 static void wpas_dev_found(void *ctx, const u8 *addr,
2273                            const struct p2p_peer_info *info,
2274                            int new_device)
2275 {
2276 #ifndef CONFIG_NO_STDOUT_DEBUG
2277         struct wpa_supplicant *wpa_s = ctx;
2278         char devtype[WPS_DEV_TYPE_BUFSIZE];
2279         char *wfd_dev_info_hex = NULL;
2280
2281 #ifdef CONFIG_WIFI_DISPLAY
2282         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2283                                                     WFD_SUBELEM_DEVICE_INFO);
2284 #endif /* CONFIG_WIFI_DISPLAY */
2285
2286         if (info->p2ps_instance) {
2287                 char str[256];
2288                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2289                 size_t len = wpabuf_len(info->p2ps_instance);
2290
2291                 while (len) {
2292                         u32 id;
2293                         u16 methods;
2294                         u8 str_len;
2295
2296                         if (len < 4 + 2 + 1)
2297                                 break;
2298                         id = WPA_GET_LE32(buf);
2299                         buf += sizeof(u32);
2300                         methods = WPA_GET_BE16(buf);
2301                         buf += sizeof(u16);
2302                         str_len = *buf++;
2303                         if (str_len > len - 4 - 2 - 1)
2304                                 break;
2305                         os_memcpy(str, buf, str_len);
2306                         str[str_len] = '\0';
2307                         buf += str_len;
2308                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2309
2310                         wpa_msg_global(wpa_s, MSG_INFO,
2311                                        P2P_EVENT_DEVICE_FOUND MACSTR
2312                                        " p2p_dev_addr=" MACSTR
2313                                        " pri_dev_type=%s name='%s'"
2314                                        " config_methods=0x%x"
2315                                        " dev_capab=0x%x"
2316                                        " group_capab=0x%x"
2317                                        " adv_id=%x asp_svc=%s%s",
2318                                        MAC2STR(addr),
2319                                        MAC2STR(info->p2p_device_addr),
2320                                        wps_dev_type_bin2str(
2321                                                info->pri_dev_type,
2322                                                devtype, sizeof(devtype)),
2323                                        info->device_name, methods,
2324                                        info->dev_capab, info->group_capab,
2325                                        id, str,
2326                                        info->vendor_elems ?
2327                                        " vendor_elems=1" : "");
2328                 }
2329                 goto done;
2330         }
2331
2332         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2333                        " p2p_dev_addr=" MACSTR
2334                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2335                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2336                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2337                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2338                                             sizeof(devtype)),
2339                        info->device_name, info->config_methods,
2340                        info->dev_capab, info->group_capab,
2341                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2342                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2343                        info->vendor_elems ? " vendor_elems=1" : "",
2344                        new_device);
2345
2346 done:
2347         os_free(wfd_dev_info_hex);
2348 #endif /* CONFIG_NO_STDOUT_DEBUG */
2349
2350         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2351 }
2352
2353
2354 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2355 {
2356         struct wpa_supplicant *wpa_s = ctx;
2357
2358         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2359                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2360
2361         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2362 }
2363
2364
2365 static void wpas_find_stopped(void *ctx)
2366 {
2367         struct wpa_supplicant *wpa_s = ctx;
2368         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2369         wpas_notify_p2p_find_stopped(wpa_s);
2370 }
2371
2372
2373 struct wpas_p2p_listen_work {
2374         unsigned int freq;
2375         unsigned int duration;
2376         struct wpabuf *probe_resp_ie;
2377 };
2378
2379
2380 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2381 {
2382         if (lwork == NULL)
2383                 return;
2384         wpabuf_free(lwork->probe_resp_ie);
2385         os_free(lwork);
2386 }
2387
2388
2389 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2390 {
2391         struct wpas_p2p_listen_work *lwork;
2392
2393         if (!wpa_s->p2p_listen_work)
2394                 return;
2395
2396         lwork = wpa_s->p2p_listen_work->ctx;
2397         wpas_p2p_listen_work_free(lwork);
2398         radio_work_done(wpa_s->p2p_listen_work);
2399         wpa_s->p2p_listen_work = NULL;
2400 }
2401
2402
2403 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2404 {
2405         struct wpa_supplicant *wpa_s = work->wpa_s;
2406         struct wpas_p2p_listen_work *lwork = work->ctx;
2407         unsigned int duration;
2408
2409         if (deinit) {
2410                 if (work->started) {
2411                         wpa_s->p2p_listen_work = NULL;
2412                         wpas_stop_listen(wpa_s);
2413                 }
2414                 wpas_p2p_listen_work_free(lwork);
2415                 return;
2416         }
2417
2418         wpa_s->p2p_listen_work = work;
2419
2420         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2421
2422         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2423                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2424                            "report received Probe Request frames");
2425                 wpas_p2p_listen_work_done(wpa_s);
2426                 return;
2427         }
2428
2429         wpa_s->pending_listen_freq = lwork->freq;
2430         wpa_s->pending_listen_duration = lwork->duration;
2431
2432         duration = lwork->duration;
2433 #ifdef CONFIG_TESTING_OPTIONS
2434         if (wpa_s->extra_roc_dur) {
2435                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2436                            duration, duration + wpa_s->extra_roc_dur);
2437                 duration += wpa_s->extra_roc_dur;
2438         }
2439 #endif /* CONFIG_TESTING_OPTIONS */
2440
2441         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2442                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2443                            "to remain on channel (%u MHz) for Listen "
2444                            "state", lwork->freq);
2445                 wpas_p2p_listen_work_done(wpa_s);
2446                 wpa_s->pending_listen_freq = 0;
2447                 return;
2448         }
2449         wpa_s->off_channel_freq = 0;
2450         wpa_s->roc_waiting_drv_freq = lwork->freq;
2451 }
2452
2453
2454 static int wpas_start_listen(void *ctx, unsigned int freq,
2455                              unsigned int duration,
2456                              const struct wpabuf *probe_resp_ie)
2457 {
2458         struct wpa_supplicant *wpa_s = ctx;
2459         struct wpas_p2p_listen_work *lwork;
2460
2461         if (wpa_s->p2p_listen_work) {
2462                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2463                 return -1;
2464         }
2465
2466         lwork = os_zalloc(sizeof(*lwork));
2467         if (lwork == NULL)
2468                 return -1;
2469         lwork->freq = freq;
2470         lwork->duration = duration;
2471         if (probe_resp_ie) {
2472                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2473                 if (lwork->probe_resp_ie == NULL) {
2474                         wpas_p2p_listen_work_free(lwork);
2475                         return -1;
2476                 }
2477         }
2478
2479         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2480                            lwork) < 0) {
2481                 wpas_p2p_listen_work_free(lwork);
2482                 return -1;
2483         }
2484
2485         return 0;
2486 }
2487
2488
2489 static void wpas_stop_listen(void *ctx)
2490 {
2491         struct wpa_supplicant *wpa_s = ctx;
2492         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2493                 wpa_drv_cancel_remain_on_channel(wpa_s);
2494                 wpa_s->off_channel_freq = 0;
2495                 wpa_s->roc_waiting_drv_freq = 0;
2496         }
2497         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2498
2499         /*
2500          * Don't cancel Probe Request RX reporting for a connected P2P Client
2501          * handling Probe Request frames.
2502          */
2503         if (!wpa_s->p2p_cli_probe)
2504                 wpa_drv_probe_req_report(wpa_s, 0);
2505
2506         wpas_p2p_listen_work_done(wpa_s);
2507 }
2508
2509
2510 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2511                                 unsigned int freq)
2512 {
2513         struct wpa_supplicant *wpa_s = ctx;
2514         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2515                                  freq);
2516 }
2517
2518
2519 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2520                                          const u8 *peer, const char *params,
2521                                          unsigned int generated_pin)
2522 {
2523         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2524                        " %08d%s", MAC2STR(peer), generated_pin, params);
2525 }
2526
2527
2528 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2529                                         const u8 *peer, const char *params)
2530 {
2531         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2532                        "%s", MAC2STR(peer), params);
2533 }
2534
2535
2536 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2537                                const u8 *dev_addr, const u8 *pri_dev_type,
2538                                const char *dev_name, u16 supp_config_methods,
2539                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2540                                size_t group_id_len)
2541 {
2542         struct wpa_supplicant *wpa_s = ctx;
2543         char devtype[WPS_DEV_TYPE_BUFSIZE];
2544         char params[300];
2545         u8 empty_dev_type[8];
2546         unsigned int generated_pin = 0;
2547         struct wpa_supplicant *group = NULL;
2548         int res;
2549
2550         if (group_id) {
2551                 for (group = wpa_s->global->ifaces; group; group = group->next)
2552                 {
2553                         struct wpa_ssid *s = group->current_ssid;
2554                         if (s != NULL &&
2555                             s->mode == WPAS_MODE_P2P_GO &&
2556                             group_id_len - ETH_ALEN == s->ssid_len &&
2557                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2558                                       s->ssid_len) == 0)
2559                                 break;
2560                 }
2561         }
2562
2563         if (pri_dev_type == NULL) {
2564                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2565                 pri_dev_type = empty_dev_type;
2566         }
2567         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2568                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2569                           "dev_capab=0x%x group_capab=0x%x%s%s",
2570                           MAC2STR(dev_addr),
2571                           wps_dev_type_bin2str(pri_dev_type, devtype,
2572                                                sizeof(devtype)),
2573                           dev_name, supp_config_methods, dev_capab, group_capab,
2574                           group ? " group=" : "",
2575                           group ? group->ifname : "");
2576         if (os_snprintf_error(sizeof(params), res))
2577                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2578         params[sizeof(params) - 1] = '\0';
2579
2580         if (config_methods & WPS_CONFIG_DISPLAY) {
2581                 generated_pin = wps_generate_pin();
2582                 wpas_prov_disc_local_display(wpa_s, peer, params,
2583                                              generated_pin);
2584         } else if (config_methods & WPS_CONFIG_KEYPAD)
2585                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2586         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2587                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2588                                MACSTR "%s", MAC2STR(peer), params);
2589
2590         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2591                                             P2P_PROV_DISC_SUCCESS,
2592                                             config_methods, generated_pin);
2593 }
2594
2595
2596 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2597 {
2598         struct wpa_supplicant *wpa_s = ctx;
2599         unsigned int generated_pin = 0;
2600         char params[20];
2601
2602         if (wpa_s->pending_pd_before_join &&
2603             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2604              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2605                 wpa_s->pending_pd_before_join = 0;
2606                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2607                            "join-existing-group operation");
2608                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2609                 return;
2610         }
2611
2612         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2613             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2614                 int res;
2615
2616                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2617                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2618                 if (os_snprintf_error(sizeof(params), res))
2619                         params[sizeof(params) - 1] = '\0';
2620         } else
2621                 params[0] = '\0';
2622
2623         if (config_methods & WPS_CONFIG_DISPLAY)
2624                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2625         else if (config_methods & WPS_CONFIG_KEYPAD) {
2626                 generated_pin = wps_generate_pin();
2627                 wpas_prov_disc_local_display(wpa_s, peer, params,
2628                                              generated_pin);
2629         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2630                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2631                                MACSTR "%s", MAC2STR(peer), params);
2632
2633         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2634                                             P2P_PROV_DISC_SUCCESS,
2635                                             config_methods, generated_pin);
2636 }
2637
2638
2639 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2640                                 enum p2p_prov_disc_status status,
2641                                 u32 adv_id, const u8 *adv_mac,
2642                                 const char *deferred_session_resp)
2643 {
2644         struct wpa_supplicant *wpa_s = ctx;
2645
2646         if (wpa_s->p2p_fallback_to_go_neg) {
2647                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2648                         "failed - fall back to GO Negotiation");
2649                 wpa_msg_global(wpa_s->parent, MSG_INFO,
2650                                P2P_EVENT_FALLBACK_TO_GO_NEG
2651                                "reason=PD-failed");
2652                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2653                 return;
2654         }
2655
2656         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2657                 wpa_s->pending_pd_before_join = 0;
2658                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2659                            "join-existing-group operation (no ACK for PD "
2660                            "Req attempts)");
2661                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2662                 return;
2663         }
2664
2665         if (adv_id && adv_mac && deferred_session_resp) {
2666                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2667                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2668                                " deferred_session_resp='%s'",
2669                                MAC2STR(peer), status, adv_id,
2670                                deferred_session_resp);
2671         } else if (adv_id && adv_mac) {
2672                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2673                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2674                                MAC2STR(peer), status, adv_id);
2675         } else {
2676                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2677                                " p2p_dev_addr=" MACSTR " status=%d",
2678                                MAC2STR(peer), status);
2679         }
2680
2681         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2682                                             status, 0, 0);
2683 }
2684
2685
2686 static int freq_included(struct wpa_supplicant *wpa_s,
2687                          const struct p2p_channels *channels,
2688                          unsigned int freq)
2689 {
2690         if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2691             wpas_p2p_go_is_peer_freq(wpa_s, freq))
2692                 return 1;
2693         return 0;
2694 }
2695
2696
2697 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2698 {
2699         unsigned int num = P2P_MAX_CHANNELS;
2700         int *common_freqs;
2701         int ret;
2702
2703         p2p_go_dump_common_freqs(wpa_s);
2704         common_freqs = os_calloc(num, sizeof(int));
2705         if (!common_freqs)
2706                 return;
2707
2708         ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2709         if (ret < 0) {
2710                 wpa_dbg(wpa_s, MSG_DEBUG,
2711                         "P2P: Failed to get group common freqs");
2712                 os_free(common_freqs);
2713                 return;
2714         }
2715
2716         os_free(wpa_s->p2p_group_common_freqs);
2717         wpa_s->p2p_group_common_freqs = common_freqs;
2718         wpa_s->p2p_group_common_freqs_num = num;
2719         p2p_go_dump_common_freqs(wpa_s);
2720 }
2721
2722
2723 /*
2724  * Check if the given frequency is one of the possible operating frequencies
2725  * set after the completion of the GO Negotiation.
2726  */
2727 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2728 {
2729         unsigned int i;
2730
2731         p2p_go_dump_common_freqs(wpa_s);
2732
2733         /* assume no restrictions */
2734         if (!wpa_s->p2p_group_common_freqs_num)
2735                 return 1;
2736
2737         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2738                 if (wpa_s->p2p_group_common_freqs[i] == freq)
2739                         return 1;
2740         }
2741         return 0;
2742 }
2743
2744
2745 static int wpas_sta_check_ecsa(struct hostapd_data *hapd,
2746                                struct sta_info *sta, void *ctx)
2747 {
2748         int *ecsa_support = ctx;
2749
2750         *ecsa_support &= sta->ecsa_supported;
2751
2752         return 0;
2753 }
2754
2755
2756 /* Check if all the peers support eCSA */
2757 static int wpas_p2p_go_clients_support_ecsa(struct wpa_supplicant *wpa_s)
2758 {
2759         int ecsa_support = 1;
2760
2761         ap_for_each_sta(wpa_s->ap_iface->bss[0], wpas_sta_check_ecsa,
2762                         &ecsa_support);
2763
2764         return ecsa_support;
2765 }
2766
2767
2768 /**
2769  * Pick the best frequency to use from all the currently used frequencies.
2770  */
2771 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2772                                         struct wpa_used_freq_data *freqs,
2773                                         unsigned int num)
2774 {
2775         unsigned int i, c;
2776
2777         /* find a candidate freq that is supported by P2P */
2778         for (c = 0; c < num; c++)
2779                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2780                         break;
2781
2782         if (c == num)
2783                 return 0;
2784
2785         /* once we have a candidate, try to find a 'better' one */
2786         for (i = c + 1; i < num; i++) {
2787                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2788                         continue;
2789
2790                 /*
2791                  * 1. Infrastructure station interfaces have higher preference.
2792                  * 2. P2P Clients have higher preference.
2793                  * 3. All others.
2794                  */
2795                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2796                         c = i;
2797                         break;
2798                 }
2799
2800                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2801                         c = i;
2802         }
2803         return freqs[c].freq;
2804 }
2805
2806
2807 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2808                                   const u8 *go_dev_addr, const u8 *ssid,
2809                                   size_t ssid_len, int *go, u8 *group_bssid,
2810                                   int *force_freq, int persistent_group,
2811                                   const struct p2p_channels *channels,
2812                                   int dev_pw_id)
2813 {
2814         struct wpa_supplicant *wpa_s = ctx;
2815         struct wpa_ssid *s;
2816         struct wpa_used_freq_data *freqs;
2817         struct wpa_supplicant *grp;
2818         int best_freq;
2819
2820         if (!persistent_group) {
2821                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2822                            " to join an active group (SSID: %s)",
2823                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2824                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2825                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2826                      == 0 ||
2827                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2828                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2829                                    "authorized invitation");
2830                         goto accept_inv;
2831                 }
2832
2833 #ifdef CONFIG_WPS_NFC
2834                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2835                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2836                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2837                         wpa_s->p2p_wps_method = WPS_NFC;
2838                         wpa_s->pending_join_wps_method = WPS_NFC;
2839                         os_memcpy(wpa_s->pending_join_dev_addr,
2840                                   go_dev_addr, ETH_ALEN);
2841                         os_memcpy(wpa_s->pending_join_iface_addr,
2842                                   bssid, ETH_ALEN);
2843                         goto accept_inv;
2844                 }
2845 #endif /* CONFIG_WPS_NFC */
2846
2847                 /*
2848                  * Do not accept the invitation automatically; notify user and
2849                  * request approval.
2850                  */
2851                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2852         }
2853
2854         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2855         if (grp) {
2856                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2857                            "running persistent group");
2858                 if (*go)
2859                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2860                 goto accept_inv;
2861         }
2862
2863         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2864             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2865                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2866                            "invitation to re-invoke a persistent group");
2867                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2868         } else if (!wpa_s->conf->persistent_reconnect)
2869                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2870
2871         for (s = wpa_s->conf->ssid; s; s = s->next) {
2872                 if (s->disabled == 2 &&
2873                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2874                     s->ssid_len == ssid_len &&
2875                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2876                         break;
2877         }
2878
2879         if (!s) {
2880                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2881                            " requested reinvocation of an unknown group",
2882                            MAC2STR(sa));
2883                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2884         }
2885
2886         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2887                 *go = 1;
2888                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2889                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2890                                    "interface is already in use - reject "
2891                                    "invitation");
2892                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2893                 }
2894                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2895         } else if (s->mode == WPAS_MODE_P2P_GO) {
2896                 *go = 1;
2897                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2898                 {
2899                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2900                                    "interface address for the group");
2901                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2902                 }
2903                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2904                           ETH_ALEN);
2905         }
2906
2907 accept_inv:
2908         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2909
2910         best_freq = 0;
2911         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2912                           sizeof(struct wpa_used_freq_data));
2913         if (freqs) {
2914                 int num_channels = wpa_s->num_multichan_concurrent;
2915                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2916                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2917                 os_free(freqs);
2918         }
2919
2920         /* Get one of the frequencies currently in use */
2921         if (best_freq > 0) {
2922                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2923                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2924
2925                 if (wpa_s->num_multichan_concurrent < 2 ||
2926                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2927                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2928                         *force_freq = best_freq;
2929                 }
2930         }
2931
2932         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2933             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2934                 if (*go == 0) {
2935                         /* We are the client */
2936                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2937                                    "running a GO but we are capable of MCC, "
2938                                    "figure out the best channel to use");
2939                         *force_freq = 0;
2940                 } else if (!freq_included(wpa_s, channels, *force_freq)) {
2941                         /* We are the GO, and *force_freq is not in the
2942                          * intersection */
2943                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2944                                    "in intersection but we are capable of MCC, "
2945                                    "figure out the best channel to use",
2946                                    *force_freq);
2947                         *force_freq = 0;
2948                 }
2949         }
2950
2951         return P2P_SC_SUCCESS;
2952 }
2953
2954
2955 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2956                                      const u8 *ssid, size_t ssid_len,
2957                                      const u8 *go_dev_addr, u8 status,
2958                                      int op_freq)
2959 {
2960         struct wpa_supplicant *wpa_s = ctx;
2961         struct wpa_ssid *s;
2962
2963         for (s = wpa_s->conf->ssid; s; s = s->next) {
2964                 if (s->disabled == 2 &&
2965                     s->ssid_len == ssid_len &&
2966                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2967                         break;
2968         }
2969
2970         if (status == P2P_SC_SUCCESS) {
2971                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2972                            " was accepted; op_freq=%d MHz, SSID=%s",
2973                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
2974                 if (s) {
2975                         int go = s->mode == WPAS_MODE_P2P_GO;
2976                         wpas_p2p_group_add_persistent(
2977                                 wpa_s, s, go, 0, op_freq, 0, 0, 0, 0, NULL,
2978                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0,
2979                                 1);
2980                 } else if (bssid) {
2981                         wpa_s->user_initiated_pd = 0;
2982                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2983                                       wpa_s->p2p_wps_method, 0, op_freq,
2984                                       ssid, ssid_len);
2985                 }
2986                 return;
2987         }
2988
2989         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2990                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2991                            " was rejected (status %u)", MAC2STR(sa), status);
2992                 return;
2993         }
2994
2995         if (!s) {
2996                 if (bssid) {
2997                         wpa_msg_global(wpa_s, MSG_INFO,
2998                                        P2P_EVENT_INVITATION_RECEIVED
2999                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3000                                        " bssid=" MACSTR " unknown-network",
3001                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3002                                        MAC2STR(bssid));
3003                 } else {
3004                         wpa_msg_global(wpa_s, MSG_INFO,
3005                                        P2P_EVENT_INVITATION_RECEIVED
3006                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3007                                        " unknown-network",
3008                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3009                 }
3010                 wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr,
3011                                                     bssid, 0, op_freq);
3012                 return;
3013         }
3014
3015         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3016                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3017                                "sa=" MACSTR " persistent=%d freq=%d",
3018                                MAC2STR(sa), s->id, op_freq);
3019         } else {
3020                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3021                                "sa=" MACSTR " persistent=%d",
3022                                MAC2STR(sa), s->id);
3023         }
3024         wpas_notify_p2p_invitation_received(wpa_s, sa, go_dev_addr, bssid,
3025                                             s->id, op_freq);
3026 }
3027
3028
3029 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3030                                         struct wpa_ssid *ssid,
3031                                         const u8 *peer, int inv)
3032 {
3033         size_t i;
3034         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
3035
3036         if (ssid == NULL)
3037                 return;
3038
3039         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3040                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
3041                               ETH_ALEN) == 0)
3042                         break;
3043         }
3044         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
3045                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3046                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3047                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3048                                    "due to invitation result", ssid->id);
3049                         wpas_notify_network_removed(wpa_s, ssid);
3050                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3051                         return;
3052                 }
3053                 return; /* Peer not found in client list */
3054         }
3055
3056         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3057                    "group %d client list%s",
3058                    MAC2STR(peer), ssid->id,
3059                    inv ? " due to invitation result" : "");
3060         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
3061                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3062                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3063         ssid->num_p2p_clients--;
3064         if (p2p_wpa_s->conf->update_config &&
3065             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
3066                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3067 }
3068
3069
3070 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3071                                           const u8 *peer)
3072 {
3073         struct wpa_ssid *ssid;
3074
3075         wpa_s = wpa_s->global->p2p_invite_group;
3076         if (wpa_s == NULL)
3077                 return; /* No known invitation group */
3078         ssid = wpa_s->current_ssid;
3079         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3080             !ssid->p2p_persistent_group)
3081                 return; /* Not operating as a GO in persistent group */
3082         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3083                                        ssid->ssid, ssid->ssid_len);
3084         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3085 }
3086
3087
3088 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3089                                    const struct p2p_channels *channels,
3090                                    const u8 *peer, int neg_freq,
3091                                    int peer_oper_freq)
3092 {
3093         struct wpa_supplicant *wpa_s = ctx;
3094         struct wpa_ssid *ssid;
3095         int freq;
3096
3097         if (bssid) {
3098                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3099                                "status=%d " MACSTR,
3100                                status, MAC2STR(bssid));
3101         } else {
3102                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3103                                "status=%d ", status);
3104         }
3105         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3106
3107         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3108                    status, MAC2STR(peer));
3109         if (wpa_s->pending_invite_ssid_id == -1) {
3110                 struct wpa_supplicant *group_if =
3111                         wpa_s->global->p2p_invite_group;
3112
3113                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3114                         wpas_remove_persistent_client(wpa_s, peer);
3115
3116                 /*
3117                  * Invitation to an active group. If this is successful and we
3118                  * are the GO, set the client wait to postpone some concurrent
3119                  * operations and to allow provisioning and connection to happen
3120                  * more quickly.
3121                  */
3122                 if (status == P2P_SC_SUCCESS &&
3123                     group_if && group_if->current_ssid &&
3124                     group_if->current_ssid->mode == WPAS_MODE_P2P_GO) {
3125                         os_get_reltime(&wpa_s->global->p2p_go_wait_client);
3126 #ifdef CONFIG_TESTING_OPTIONS
3127                         if (group_if->p2p_go_csa_on_inv) {
3128                                 wpa_printf(MSG_DEBUG,
3129                                            "Testing: force P2P GO CSA after invitation");
3130                                 eloop_cancel_timeout(
3131                                         wpas_p2p_reconsider_moving_go,
3132                                         wpa_s, NULL);
3133                                 eloop_register_timeout(
3134                                         0, 50000,
3135                                         wpas_p2p_reconsider_moving_go,
3136                                         wpa_s, NULL);
3137                         }
3138 #endif /* CONFIG_TESTING_OPTIONS */
3139                 }
3140                 return;
3141         }
3142
3143         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3144                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3145                            "invitation exchange to indicate readiness for "
3146                            "re-invocation");
3147         }
3148
3149         if (status != P2P_SC_SUCCESS) {
3150                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3151                         ssid = wpa_config_get_network(
3152                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3153                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3154                 }
3155                 wpas_p2p_remove_pending_group_interface(wpa_s);
3156                 return;
3157         }
3158
3159         ssid = wpa_config_get_network(wpa_s->conf,
3160                                       wpa_s->pending_invite_ssid_id);
3161         if (ssid == NULL) {
3162                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3163                            "data matching with invitation");
3164                 return;
3165         }
3166
3167         /*
3168          * The peer could have missed our ctrl::ack frame for Invitation
3169          * Response and continue retransmitting the frame. To reduce the
3170          * likelihood of the peer not getting successful TX status for the
3171          * Invitation Response frame, wait a short time here before starting
3172          * the persistent group so that we will remain on the current channel to
3173          * acknowledge any possible retransmission from the peer.
3174          */
3175         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3176                 "starting persistent group");
3177         os_sleep(0, 50000);
3178
3179         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3180             freq_included(wpa_s, channels, neg_freq))
3181                 freq = neg_freq;
3182         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3183                  freq_included(wpa_s, channels, peer_oper_freq))
3184                 freq = peer_oper_freq;
3185         else
3186                 freq = 0;
3187
3188         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3189                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3190         wpas_p2p_group_add_persistent(wpa_s, ssid,
3191                                       ssid->mode == WPAS_MODE_P2P_GO,
3192                                       wpa_s->p2p_persistent_go_freq,
3193                                       freq,
3194                                       wpa_s->p2p_go_vht_center_freq2,
3195                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3196                                       wpa_s->p2p_go_max_oper_chwidth,
3197                                       channels,
3198                                       ssid->mode == WPAS_MODE_P2P_GO ?
3199                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3200                                       0, 1);
3201 }
3202
3203
3204 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3205                                     unsigned int freq)
3206 {
3207         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3208                 return 1;
3209         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3210 }
3211
3212
3213 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3214 {
3215         reg->channel[reg->channels] = chan;
3216         reg->channels++;
3217 }
3218
3219
3220 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3221                                      struct p2p_channels *chan,
3222                                      struct p2p_channels *cli_chan)
3223 {
3224         int i, cla = 0;
3225
3226         wpa_s->global->p2p_24ghz_social_channels = 1;
3227
3228         os_memset(cli_chan, 0, sizeof(*cli_chan));
3229
3230         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3231                    "band");
3232
3233         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3234         chan->reg_class[cla].reg_class = 81;
3235         chan->reg_class[cla].channels = 0;
3236         for (i = 0; i < 11; i++) {
3237                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3238                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3239         }
3240         if (chan->reg_class[cla].channels)
3241                 cla++;
3242
3243         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3244                    "band");
3245
3246         /* Operating class 115 - 5 GHz, channels 36-48 */
3247         chan->reg_class[cla].reg_class = 115;
3248         chan->reg_class[cla].channels = 0;
3249         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3250                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3251         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3252                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3253         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3254                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3255         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3256                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3257         if (chan->reg_class[cla].channels)
3258                 cla++;
3259
3260         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3261                    "band");
3262
3263         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3264         chan->reg_class[cla].reg_class = 124;
3265         chan->reg_class[cla].channels = 0;
3266         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3267                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3268         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3269                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3270         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3271                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3272         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3273                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3274         if (chan->reg_class[cla].channels)
3275                 cla++;
3276
3277         chan->reg_classes = cla;
3278         return 0;
3279 }
3280
3281
3282 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3283                                           u16 num_modes,
3284                                           enum hostapd_hw_mode mode)
3285 {
3286         u16 i;
3287
3288         for (i = 0; i < num_modes; i++) {
3289                 if (modes[i].mode == mode)
3290                         return &modes[i];
3291         }
3292
3293         return NULL;
3294 }
3295
3296
3297 enum chan_allowed {
3298         NOT_ALLOWED, NO_IR, ALLOWED
3299 };
3300
3301 static int has_channel(struct wpa_global *global,
3302                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3303 {
3304         int i;
3305         unsigned int freq;
3306
3307         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3308                 chan * 5;
3309         if (wpas_p2p_disallowed_freq(global, freq))
3310                 return NOT_ALLOWED;
3311
3312         for (i = 0; i < mode->num_channels; i++) {
3313                 if (mode->channels[i].chan == chan) {
3314                         if (flags)
3315                                 *flags = mode->channels[i].flag;
3316                         if (mode->channels[i].flag &
3317                             (HOSTAPD_CHAN_DISABLED |
3318                              HOSTAPD_CHAN_RADAR))
3319                                 return NOT_ALLOWED;
3320                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3321                                 return NO_IR;
3322                         return ALLOWED;
3323                 }
3324         }
3325
3326         return NOT_ALLOWED;
3327 }
3328
3329
3330 struct p2p_oper_class_map {
3331         enum hostapd_hw_mode mode;
3332         u8 op_class;
3333         u8 min_chan;
3334         u8 max_chan;
3335         u8 inc;
3336         enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160, BW160, BW80P80 } bw;
3337 };
3338
3339 static const struct p2p_oper_class_map op_class[] = {
3340         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3341 #if 0 /* Do not enable HT40 on 2 GHz for now */
3342         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3343         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3344 #endif
3345         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3346         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3347         { HOSTAPD_MODE_IEEE80211A, 125, 149, 169, 4, BW20 },
3348         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3349         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3350         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3351         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3352
3353         /*
3354          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3355          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3356          * 80 MHz, but currently use the following definition for simplicity
3357          * (these center frequencies are not actual channels, which makes
3358          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3359          * removing invalid channels.
3360          */
3361         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3362         { HOSTAPD_MODE_IEEE80211A, 130, 36, 161, 4, BW80P80 },
3363         { HOSTAPD_MODE_IEEE80211A, 129, 50, 114, 16, BW160 },
3364         { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
3365         { -1, 0, 0, 0, 0, BW20 }
3366 };
3367
3368
3369 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3370                                      struct hostapd_hw_modes *mode,
3371                                      u8 channel)
3372 {
3373         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3374         unsigned int i;
3375
3376         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3377                 return 0;
3378
3379         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3380                 /*
3381                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3382                  * so the center channel is 6 channels away from the start/end.
3383                  */
3384                 if (channel >= center_channels[i] - 6 &&
3385                     channel <= center_channels[i] + 6)
3386                         return center_channels[i];
3387
3388         return 0;
3389 }
3390
3391
3392 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3393                                                struct hostapd_hw_modes *mode,
3394                                                u8 channel, u8 bw)
3395 {
3396         u8 center_chan;
3397         int i, flags;
3398         enum chan_allowed res, ret = ALLOWED;
3399
3400         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3401         if (!center_chan)
3402                 return NOT_ALLOWED;
3403         if (center_chan >= 58 && center_chan <= 138)
3404                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3405
3406         /* check all the channels are available */
3407         for (i = 0; i < 4; i++) {
3408                 int adj_chan = center_chan - 6 + i * 4;
3409
3410                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3411                 if (res == NOT_ALLOWED)
3412                         return NOT_ALLOWED;
3413                 if (res == NO_IR)
3414                         ret = NO_IR;
3415
3416                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3417                         return NOT_ALLOWED;
3418                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3419                         return NOT_ALLOWED;
3420                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3421                         return NOT_ALLOWED;
3422                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3423                         return NOT_ALLOWED;
3424         }
3425
3426         return ret;
3427 }
3428
3429
3430 static int wpas_p2p_get_center_160mhz(struct wpa_supplicant *wpa_s,
3431                                      struct hostapd_hw_modes *mode,
3432                                      u8 channel)
3433 {
3434         u8 center_channels[] = { 50, 114 };
3435         unsigned int i;
3436
3437         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3438                 return 0;
3439
3440         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3441                 /*
3442                  * In 160 MHz, the bandwidth "spans" 28 channels (e.g., 36-64),
3443                  * so the center channel is 14 channels away from the start/end.
3444                  */
3445                 if (channel >= center_channels[i] - 14 &&
3446                     channel <= center_channels[i] + 14)
3447                         return center_channels[i];
3448
3449         return 0;
3450 }
3451
3452
3453 static enum chan_allowed wpas_p2p_verify_160mhz(struct wpa_supplicant *wpa_s,
3454                                                struct hostapd_hw_modes *mode,
3455                                                u8 channel, u8 bw)
3456 {
3457         u8 center_chan;
3458         int i, flags;
3459         enum chan_allowed res, ret = ALLOWED;
3460
3461         center_chan = wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3462         if (!center_chan)
3463                 return NOT_ALLOWED;
3464         /* VHT 160 MHz uses DFS channels in most countries. */
3465
3466         /* Check all the channels are available */
3467         for (i = 0; i < 8; i++) {
3468                 int adj_chan = center_chan - 14 + i * 4;
3469
3470                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3471                 if (res == NOT_ALLOWED)
3472                         return NOT_ALLOWED;
3473
3474                 if (res == NO_IR)
3475                         ret = NO_IR;
3476
3477                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_150))
3478                         return NOT_ALLOWED;
3479                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_130))
3480                         return NOT_ALLOWED;
3481                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_110))
3482                         return NOT_ALLOWED;
3483                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_90))
3484                         return NOT_ALLOWED;
3485                 if (i == 4 && !(flags & HOSTAPD_CHAN_VHT_90_70))
3486                         return NOT_ALLOWED;
3487                 if (i == 5 && !(flags & HOSTAPD_CHAN_VHT_110_50))
3488                         return NOT_ALLOWED;
3489                 if (i == 6 && !(flags & HOSTAPD_CHAN_VHT_130_30))
3490                         return NOT_ALLOWED;
3491                 if (i == 7 && !(flags & HOSTAPD_CHAN_VHT_150_10))
3492                         return NOT_ALLOWED;
3493         }
3494
3495         return ret;
3496 }
3497
3498
3499 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3500                                                  struct hostapd_hw_modes *mode,
3501                                                  u8 channel, u8 bw)
3502 {
3503         int flag = 0;
3504         enum chan_allowed res, res2;
3505
3506         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3507         if (bw == BW40MINUS) {
3508                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3509                         return NOT_ALLOWED;
3510                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3511         } else if (bw == BW40PLUS) {
3512                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3513                         return NOT_ALLOWED;
3514                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3515         } else if (bw == BW80) {
3516                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3517         } else if (bw == BW160) {
3518                 res2 = wpas_p2p_verify_160mhz(wpa_s, mode, channel, bw);
3519         }
3520
3521         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3522                 return NOT_ALLOWED;
3523         if (res == NO_IR || res2 == NO_IR)
3524                 return NO_IR;
3525         return res;
3526 }
3527
3528
3529 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3530                                    struct p2p_channels *chan,
3531                                    struct p2p_channels *cli_chan)
3532 {
3533         struct hostapd_hw_modes *mode;
3534         int cla, op, cli_cla;
3535
3536         if (wpa_s->hw.modes == NULL) {
3537                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3538                            "of all supported channels; assume dualband "
3539                            "support");
3540                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3541         }
3542
3543         cla = cli_cla = 0;
3544
3545         for (op = 0; op_class[op].op_class; op++) {
3546                 const struct p2p_oper_class_map *o = &op_class[op];
3547                 u8 ch;
3548                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3549
3550                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3551                 if (mode == NULL)
3552                         continue;
3553                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3554                         wpa_s->global->p2p_24ghz_social_channels = 1;
3555                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3556                         enum chan_allowed res;
3557                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3558                         if (res == ALLOWED) {
3559                                 if (reg == NULL) {
3560                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3561                                                    o->op_class);
3562                                         reg = &chan->reg_class[cla];
3563                                         cla++;
3564                                         reg->reg_class = o->op_class;
3565                                 }
3566                                 reg->channel[reg->channels] = ch;
3567                                 reg->channels++;
3568                         } else if (res == NO_IR &&
3569                                    wpa_s->conf->p2p_add_cli_chan) {
3570                                 if (cli_reg == NULL) {
3571                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3572                                                    o->op_class);
3573                                         cli_reg = &cli_chan->reg_class[cli_cla];
3574                                         cli_cla++;
3575                                         cli_reg->reg_class = o->op_class;
3576                                 }
3577                                 cli_reg->channel[cli_reg->channels] = ch;
3578                                 cli_reg->channels++;
3579                         }
3580                 }
3581                 if (reg) {
3582                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3583                                     reg->channel, reg->channels);
3584                 }
3585                 if (cli_reg) {
3586                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3587                                     cli_reg->channel, cli_reg->channels);
3588                 }
3589         }
3590
3591         chan->reg_classes = cla;
3592         cli_chan->reg_classes = cli_cla;
3593
3594         return 0;
3595 }
3596
3597
3598 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3599                            struct hostapd_hw_modes *mode, u8 channel)
3600 {
3601         int op;
3602         enum chan_allowed ret;
3603
3604         for (op = 0; op_class[op].op_class; op++) {
3605                 const struct p2p_oper_class_map *o = &op_class[op];
3606                 u8 ch;
3607
3608                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3609                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3610                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3611                             ch != channel)
3612                                 continue;
3613                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3614                         if (ret == ALLOWED)
3615                                 return (o->bw == BW40MINUS) ? -1 : 1;
3616                 }
3617         }
3618         return 0;
3619 }
3620
3621
3622 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3623                               struct hostapd_hw_modes *mode, u8 channel)
3624 {
3625         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3626                 return 0;
3627
3628         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3629 }
3630
3631
3632 int wpas_p2p_get_vht160_center(struct wpa_supplicant *wpa_s,
3633                                struct hostapd_hw_modes *mode, u8 channel)
3634 {
3635         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW160))
3636                 return 0;
3637         return wpas_p2p_get_center_160mhz(wpa_s, mode, channel);
3638 }
3639
3640
3641 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3642                         size_t buf_len)
3643 {
3644         struct wpa_supplicant *wpa_s = ctx;
3645
3646         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3647                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3648                         break;
3649         }
3650         if (wpa_s == NULL)
3651                 return -1;
3652
3653         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3654 }
3655
3656
3657 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3658                                               const u8 *ssid, size_t ssid_len)
3659 {
3660         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3661                 struct wpa_ssid *s = wpa_s->current_ssid;
3662                 if (s == NULL)
3663                         continue;
3664                 if (s->mode != WPAS_MODE_P2P_GO &&
3665                     s->mode != WPAS_MODE_AP &&
3666                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3667                         continue;
3668                 if (s->ssid_len != ssid_len ||
3669                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3670                         continue;
3671                 return wpa_s;
3672         }
3673
3674         return NULL;
3675
3676 }
3677
3678
3679 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3680                                                   const u8 *peer_dev_addr)
3681 {
3682         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3683                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3684                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3685                         continue;
3686                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3687                         return wpa_s;
3688         }
3689
3690         return NULL;
3691 }
3692
3693
3694 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3695 {
3696         struct wpa_supplicant *wpa_s = ctx;
3697
3698         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3699 }
3700
3701
3702 static int wpas_is_concurrent_session_active(void *ctx)
3703 {
3704         struct wpa_supplicant *wpa_s = ctx;
3705         struct wpa_supplicant *ifs;
3706
3707         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3708                 if (ifs == wpa_s)
3709                         continue;
3710                 if (ifs->wpa_state > WPA_ASSOCIATED)
3711                         return 1;
3712         }
3713         return 0;
3714 }
3715
3716
3717 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3718 {
3719         struct wpa_supplicant *wpa_s = ctx;
3720         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3721 }
3722
3723
3724 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3725                                   const char *conf_p2p_dev)
3726 {
3727         struct wpa_interface iface;
3728         struct wpa_supplicant *p2pdev_wpa_s;
3729         char ifname[100];
3730         char force_name[100];
3731         int ret;
3732
3733         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3734                           wpa_s->ifname);
3735         if (os_snprintf_error(sizeof(ifname), ret))
3736                 return -1;
3737         force_name[0] = '\0';
3738         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3739         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3740                              force_name, wpa_s->pending_interface_addr, NULL);
3741         if (ret < 0) {
3742                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3743                 return ret;
3744         }
3745         os_strlcpy(wpa_s->pending_interface_name, ifname,
3746                    sizeof(wpa_s->pending_interface_name));
3747
3748         os_memset(&iface, 0, sizeof(iface));
3749         iface.p2p_mgmt = 1;
3750         iface.ifname = wpa_s->pending_interface_name;
3751         iface.driver = wpa_s->driver->name;
3752         iface.driver_param = wpa_s->conf->driver_param;
3753
3754         /*
3755          * If a P2P Device configuration file was given, use it as the interface
3756          * configuration file (instead of using parent's configuration file.
3757          */
3758         if (conf_p2p_dev) {
3759                 iface.confname = conf_p2p_dev;
3760                 iface.ctrl_interface = NULL;
3761         } else {
3762                 iface.confname = wpa_s->confname;
3763                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3764         }
3765
3766         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3767         if (!p2pdev_wpa_s) {
3768                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3769                 return -1;
3770         }
3771
3772         wpa_s->pending_interface_name[0] = '\0';
3773         return 0;
3774 }
3775
3776
3777 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3778                                const u8 *noa, size_t noa_len)
3779 {
3780         struct wpa_supplicant *wpa_s, *intf = ctx;
3781         char hex[100];
3782
3783         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3784                 if (wpa_s->waiting_presence_resp)
3785                         break;
3786         }
3787         if (!wpa_s) {
3788                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3789                 return;
3790         }
3791         wpa_s->waiting_presence_resp = 0;
3792
3793         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3794         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3795                 " status=%u noa=%s", MAC2STR(src), status, hex);
3796 }
3797
3798
3799 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3800                                      size_t ssid_len, u8 *go_dev_addr,
3801                                      u8 *ret_ssid, size_t *ret_ssid_len,
3802                                      u8 *intended_iface_addr)
3803 {
3804         struct wpa_supplicant *wpa_s = ctx;
3805         struct wpa_ssid *s;
3806
3807         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3808         if (s) {
3809                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3810                 *ret_ssid_len = s->ssid_len;
3811                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3812
3813                 if (s->mode != WPAS_MODE_P2P_GO) {
3814                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3815                 } else if (wpas_p2p_create_iface(wpa_s)) {
3816                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3817                                 return 0;
3818
3819                         os_memcpy(intended_iface_addr,
3820                                   wpa_s->pending_interface_addr, ETH_ALEN);
3821                 } else {
3822                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3823                                   ETH_ALEN);
3824                 }
3825                 return 1;
3826         }
3827
3828         return 0;
3829 }
3830
3831
3832 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3833                             u8 *ssid, size_t *ssid_len, int *group_iface,
3834                             unsigned int *freq)
3835 {
3836         struct wpa_supplicant *wpa_s = ctx;
3837         struct wpa_supplicant *go;
3838         struct wpa_ssid *s;
3839
3840         /*
3841          * group_iface will be set to 1 only if a dedicated interface for P2P
3842          * role is required. First, we try to reuse an active GO. However,
3843          * if it is not present, we will try to reactivate an existing
3844          * persistent group and set group_iface to 1, so the caller will know
3845          * that the pending interface should be used.
3846          */
3847         *group_iface = 0;
3848
3849         if (freq)
3850                 *freq = 0;
3851
3852         go = wpas_p2p_get_go_group(wpa_s);
3853         if (!go) {
3854                 s = wpas_p2p_get_persistent_go(wpa_s);
3855                 *group_iface = wpas_p2p_create_iface(wpa_s);
3856                 if (s)
3857                         os_memcpy(intended_addr, s->bssid, ETH_ALEN);
3858                 else
3859                         return 0;
3860         } else {
3861                 s = go->current_ssid;
3862                 os_memcpy(intended_addr, go->own_addr, ETH_ALEN);
3863                 if (freq)
3864                         *freq = go->assoc_freq;
3865         }
3866
3867         os_memcpy(ssid, s->ssid, s->ssid_len);
3868         *ssid_len = s->ssid_len;
3869
3870         return 1;
3871 }
3872
3873
3874 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3875                                     const u8 *ssid, size_t ssid_len)
3876 {
3877         struct wpa_supplicant *wpa_s = ctx;
3878         struct wpa_ssid *s;
3879         int save_config = 0;
3880         size_t i;
3881
3882         /* Start with our first choice of Persistent Groups */
3883         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3884                 if (go && ssid && ssid_len &&
3885                     s->ssid_len == ssid_len &&
3886                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3887                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3888                         break;
3889
3890                 /* Remove stale persistent group */
3891                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3892                         wpa_config_remove_network(wpa_s->conf, s->id);
3893                         save_config = 1;
3894                         continue;
3895                 }
3896
3897                 for (i = 0; i < s->num_p2p_clients; i++) {
3898                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3899                                       peer, ETH_ALEN) != 0)
3900                                 continue;
3901
3902                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3903                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3904                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3905                         break;
3906                 }
3907                 s->num_p2p_clients--;
3908                 save_config = 1;
3909         }
3910
3911         if (save_config)
3912                 p2p_config_write(wpa_s);
3913
3914         /* Return TRUE if valid SSID remains */
3915         return s != NULL;
3916 }
3917
3918
3919 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3920                                        const u8 *feat_cap, size_t feat_cap_len)
3921 {
3922         static const char pref[] = " feature_cap=";
3923         int ret;
3924
3925         buf[0] = '\0';
3926
3927         /*
3928          * We expect a feature capability to contain at least one byte to be
3929          * reported. The string buffer provided by the caller function is
3930          * expected to be big enough to contain all bytes of the attribute for
3931          * known specifications. This function truncates the reported bytes if
3932          * the feature capability data exceeds the string buffer size.
3933          */
3934         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3935                 return;
3936
3937         os_memcpy(buf, pref, sizeof(pref));
3938         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3939                                buf_len - sizeof(pref) + 1,
3940                                feat_cap, feat_cap_len);
3941
3942         if (ret != (2 * (int) feat_cap_len))
3943                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3944 }
3945
3946
3947 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3948                                     const u8 *adv_mac, const u8 *ses_mac,
3949                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3950                                     u8 conncap, int passwd_id,
3951                                     const u8 *persist_ssid,
3952                                     size_t persist_ssid_size, int response_done,
3953                                     int prov_start, const char *session_info,
3954                                     const u8 *feat_cap, size_t feat_cap_len,
3955                                     unsigned int freq,
3956                                     const u8 *group_ssid, size_t group_ssid_len)
3957 {
3958         struct wpa_supplicant *wpa_s = ctx;
3959         u8 mac[ETH_ALEN];
3960         struct wpa_ssid *persistent_go, *stale, *s = NULL;
3961         int save_config = 0;
3962         struct wpa_supplicant *go_wpa_s;
3963         char feat_cap_str[256];
3964
3965         if (!dev)
3966                 return;
3967
3968         os_memset(mac, 0, ETH_ALEN);
3969         if (!adv_mac)
3970                 adv_mac = mac;
3971         if (!ses_mac)
3972                 ses_mac = mac;
3973         if (!grp_mac)
3974                 grp_mac = mac;
3975
3976         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3977                                    feat_cap, feat_cap_len);
3978
3979         if (prov_start) {
3980                 if (session_info == NULL) {
3981                         wpa_msg_global(wpa_s, MSG_INFO,
3982                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3983                                        " adv_id=%x conncap=%x"
3984                                        " adv_mac=" MACSTR
3985                                        " session=%x mac=" MACSTR
3986                                        " dev_passwd_id=%d%s",
3987                                        MAC2STR(dev), adv_id, conncap,
3988                                        MAC2STR(adv_mac),
3989                                        ses_id, MAC2STR(ses_mac),
3990                                        passwd_id, feat_cap_str);
3991                 } else {
3992                         wpa_msg_global(wpa_s, MSG_INFO,
3993                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3994                                        " adv_id=%x conncap=%x"
3995                                        " adv_mac=" MACSTR
3996                                        " session=%x mac=" MACSTR
3997                                        " dev_passwd_id=%d info='%s'%s",
3998                                        MAC2STR(dev), adv_id, conncap,
3999                                        MAC2STR(adv_mac),
4000                                        ses_id, MAC2STR(ses_mac),
4001                                        passwd_id, session_info, feat_cap_str);
4002                 }
4003                 return;
4004         }
4005
4006         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
4007         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4008
4009         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
4010                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4011                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4012
4013                 if (persistent_go && !persistent_go->num_p2p_clients) {
4014                         /* remove empty persistent GO */
4015                         wpa_config_remove_network(wpa_s->conf,
4016                                                   persistent_go->id);
4017                 }
4018
4019                 wpa_msg_global(wpa_s, MSG_INFO,
4020                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4021                                " status=%d"
4022                                " adv_id=%x adv_mac=" MACSTR
4023                                " session=%x mac=" MACSTR "%s",
4024                                MAC2STR(dev), status,
4025                                adv_id, MAC2STR(adv_mac),
4026                                ses_id, MAC2STR(ses_mac), feat_cap_str);
4027                 return;
4028         }
4029
4030         /* Clean up stale persistent groups with this device */
4031         if (persist_ssid && persist_ssid_size)
4032                 s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
4033                                             persist_ssid_size);
4034
4035         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
4036             is_zero_ether_addr(grp_mac)) {
4037                 wpa_dbg(wpa_s, MSG_ERROR,
4038                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
4039                 return;
4040         }
4041
4042         for (;;) {
4043                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
4044                 if (!stale)
4045                         break;
4046
4047                 if (s && s->ssid_len == stale->ssid_len &&
4048                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
4049                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
4050                         break;
4051
4052                 /* Remove stale persistent group */
4053                 if (stale->mode != WPAS_MODE_P2P_GO ||
4054                     stale->num_p2p_clients <= 1) {
4055                         wpa_config_remove_network(wpa_s->conf, stale->id);
4056                 } else {
4057                         size_t i;
4058
4059                         for (i = 0; i < stale->num_p2p_clients; i++) {
4060                                 if (os_memcmp(stale->p2p_client_list +
4061                                               i * ETH_ALEN,
4062                                               dev, ETH_ALEN) == 0) {
4063                                         os_memmove(stale->p2p_client_list +
4064                                                    i * ETH_ALEN,
4065                                                    stale->p2p_client_list +
4066                                                    (i + 1) * ETH_ALEN,
4067                                                    (stale->num_p2p_clients -
4068                                                     i - 1) * ETH_ALEN);
4069                                         break;
4070                                 }
4071                         }
4072                         stale->num_p2p_clients--;
4073                 }
4074                 save_config = 1;
4075         }
4076
4077         if (save_config)
4078                 p2p_config_write(wpa_s);
4079
4080         if (s) {
4081                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4082                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4083
4084                 if (persistent_go && s != persistent_go &&
4085                     !persistent_go->num_p2p_clients) {
4086                         /* remove empty persistent GO */
4087                         wpa_config_remove_network(wpa_s->conf,
4088                                                   persistent_go->id);
4089                         /* Save config */
4090                 }
4091
4092                 wpa_msg_global(wpa_s, MSG_INFO,
4093                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4094                                " status=%d"
4095                                " adv_id=%x adv_mac=" MACSTR
4096                                " session=%x mac=" MACSTR
4097                                " persist=%d%s",
4098                                MAC2STR(dev), status,
4099                                adv_id, MAC2STR(adv_mac),
4100                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
4101                 return;
4102         }
4103
4104         if (conncap == P2PS_SETUP_GROUP_OWNER) {
4105                 /*
4106                  * We need to copy the interface name. Simply saving a
4107                  * pointer isn't enough, since if we use pending_interface_name
4108                  * it will be overwritten when the group is added.
4109                  */
4110                 char go_ifname[100];
4111
4112                 go_ifname[0] = '\0';
4113                 if (!go_wpa_s) {
4114                         wpa_s->global->pending_p2ps_group = 1;
4115                         wpa_s->global->pending_p2ps_group_freq = freq;
4116
4117                         if (!wpas_p2p_create_iface(wpa_s))
4118                                 os_memcpy(go_ifname, wpa_s->ifname,
4119                                           sizeof(go_ifname));
4120                         else if (wpa_s->pending_interface_name[0])
4121                                 os_memcpy(go_ifname,
4122                                           wpa_s->pending_interface_name,
4123                                           sizeof(go_ifname));
4124
4125                         if (!go_ifname[0]) {
4126                                 wpas_p2ps_prov_complete(
4127                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
4128                                         dev, adv_mac, ses_mac,
4129                                         grp_mac, adv_id, ses_id, 0, 0,
4130                                         NULL, 0, 0, 0, NULL, NULL, 0, 0,
4131                                         NULL, 0);
4132                                 return;
4133                         }
4134
4135                         /* If PD Resp complete, start up the GO */
4136                         if (response_done && persistent_go) {
4137                                 wpas_p2p_group_add_persistent(
4138                                         wpa_s, persistent_go,
4139                                         0, 0, freq, 0, 0, 0, 0, NULL,
4140                                         persistent_go->mode ==
4141                                         WPAS_MODE_P2P_GO ?
4142                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
4143                                         0, 0);
4144                         } else if (response_done) {
4145                                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4146                         }
4147
4148                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4149                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
4150                                           ETH_ALEN);
4151                                 wpa_s->p2ps_method_config_any = 1;
4152                         }
4153                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
4154                         os_memcpy(go_ifname, go_wpa_s->ifname,
4155                                   sizeof(go_ifname));
4156
4157                         if (is_zero_ether_addr(grp_mac)) {
4158                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4159                                         "P2P: Setting PIN-1 for ANY");
4160                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
4161                                                           "12345670", NULL, 0,
4162                                                           0);
4163                         } else {
4164                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
4165                                         "P2P: Setting PIN-1 for " MACSTR,
4166                                         MAC2STR(grp_mac));
4167                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
4168                                                           "12345670", NULL, 0,
4169                                                           0);
4170                         }
4171
4172                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
4173                         wpa_s->p2ps_method_config_any = 1;
4174                 }
4175
4176                 wpa_msg_global(wpa_s, MSG_INFO,
4177                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4178                                " status=%d conncap=%x"
4179                                " adv_id=%x adv_mac=" MACSTR
4180                                " session=%x mac=" MACSTR
4181                                " dev_passwd_id=%d go=%s%s",
4182                                MAC2STR(dev), status, conncap,
4183                                adv_id, MAC2STR(adv_mac),
4184                                ses_id, MAC2STR(ses_mac),
4185                                passwd_id, go_ifname, feat_cap_str);
4186                 return;
4187         }
4188
4189         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
4190                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
4191
4192         if (persistent_go && !persistent_go->num_p2p_clients) {
4193                 /* remove empty persistent GO */
4194                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
4195         }
4196
4197         if (conncap == P2PS_SETUP_CLIENT) {
4198                 char ssid_hex[32 * 2 + 1];
4199
4200                 if (group_ssid)
4201                         wpa_snprintf_hex(ssid_hex, sizeof(ssid_hex),
4202                                          group_ssid, group_ssid_len);
4203                 else
4204                         ssid_hex[0] = '\0';
4205                 wpa_msg_global(wpa_s, MSG_INFO,
4206                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4207                                " status=%d conncap=%x"
4208                                " adv_id=%x adv_mac=" MACSTR
4209                                " session=%x mac=" MACSTR
4210                                " dev_passwd_id=%d join=" MACSTR "%s%s%s",
4211                                MAC2STR(dev), status, conncap,
4212                                adv_id, MAC2STR(adv_mac),
4213                                ses_id, MAC2STR(ses_mac),
4214                                passwd_id, MAC2STR(grp_mac), feat_cap_str,
4215                                group_ssid ? " group_ssid=" : "", ssid_hex);
4216         } else {
4217                 wpa_msg_global(wpa_s, MSG_INFO,
4218                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
4219                                " status=%d conncap=%x"
4220                                " adv_id=%x adv_mac=" MACSTR
4221                                " session=%x mac=" MACSTR
4222                                " dev_passwd_id=%d%s",
4223                                MAC2STR(dev), status, conncap,
4224                                adv_id, MAC2STR(adv_mac),
4225                                ses_id, MAC2STR(ses_mac),
4226                                passwd_id, feat_cap_str);
4227         }
4228 }
4229
4230
4231 static int _wpas_p2p_in_progress(void *ctx)
4232 {
4233         struct wpa_supplicant *wpa_s = ctx;
4234         return wpas_p2p_in_progress(wpa_s);
4235 }
4236
4237
4238 static int wpas_prov_disc_resp_cb(void *ctx)
4239 {
4240         struct wpa_supplicant *wpa_s = ctx;
4241         struct wpa_ssid *persistent_go;
4242         unsigned int freq;
4243
4244         if (!wpa_s->global->pending_p2ps_group)
4245                 return 0;
4246
4247         freq = wpa_s->global->pending_p2ps_group_freq;
4248         wpa_s->global->pending_p2ps_group_freq = 0;
4249         wpa_s->global->pending_p2ps_group = 0;
4250
4251         if (wpas_p2p_get_go_group(wpa_s))
4252                 return 0;
4253         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4254
4255         if (persistent_go) {
4256                 wpas_p2p_group_add_persistent(
4257                         wpa_s, persistent_go, 0, 0, 0, 0, 0, 0, 0, NULL,
4258                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4259                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0, 0);
4260         } else {
4261                 wpas_p2p_group_add(wpa_s, 1, freq, 0, 0, 0, 0);
4262         }
4263
4264         return 1;
4265 }
4266
4267
4268 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4269                                        unsigned int *len,
4270                                        unsigned int *freq_list)
4271 {
4272         struct wpa_supplicant *wpa_s = ctx;
4273
4274         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4275                                           WPA_IF_P2P_CLIENT, len, freq_list);
4276 }
4277
4278
4279 /**
4280  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4281  * @global: Pointer to global data from wpa_supplicant_init()
4282  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4283  * Returns: 0 on success, -1 on failure
4284  */
4285 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4286 {
4287         struct p2p_config p2p;
4288         int i;
4289
4290         if (wpa_s->conf->p2p_disabled)
4291                 return 0;
4292
4293         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4294                 return 0;
4295
4296         if (global->p2p)
4297                 return 0;
4298
4299         os_memset(&p2p, 0, sizeof(p2p));
4300         p2p.cb_ctx = wpa_s;
4301         p2p.debug_print = wpas_p2p_debug_print;
4302         p2p.p2p_scan = wpas_p2p_scan;
4303         p2p.send_action = wpas_send_action;
4304         p2p.send_action_done = wpas_send_action_done;
4305         p2p.go_neg_completed = wpas_go_neg_completed;
4306         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4307         p2p.dev_found = wpas_dev_found;
4308         p2p.dev_lost = wpas_dev_lost;
4309         p2p.find_stopped = wpas_find_stopped;
4310         p2p.start_listen = wpas_start_listen;
4311         p2p.stop_listen = wpas_stop_listen;
4312         p2p.send_probe_resp = wpas_send_probe_resp;
4313         p2p.sd_request = wpas_sd_request;
4314         p2p.sd_response = wpas_sd_response;
4315         p2p.prov_disc_req = wpas_prov_disc_req;
4316         p2p.prov_disc_resp = wpas_prov_disc_resp;
4317         p2p.prov_disc_fail = wpas_prov_disc_fail;
4318         p2p.invitation_process = wpas_invitation_process;
4319         p2p.invitation_received = wpas_invitation_received;
4320         p2p.invitation_result = wpas_invitation_result;
4321         p2p.get_noa = wpas_get_noa;
4322         p2p.go_connected = wpas_go_connected;
4323         p2p.presence_resp = wpas_presence_resp;
4324         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4325         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4326         p2p.get_persistent_group = wpas_get_persistent_group;
4327         p2p.get_go_info = wpas_get_go_info;
4328         p2p.remove_stale_groups = wpas_remove_stale_groups;
4329         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4330         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4331         p2p.p2ps_group_capability = p2ps_group_capability;
4332         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4333
4334         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4335         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4336         p2p.dev_name = wpa_s->conf->device_name;
4337         p2p.manufacturer = wpa_s->conf->manufacturer;
4338         p2p.model_name = wpa_s->conf->model_name;
4339         p2p.model_number = wpa_s->conf->model_number;
4340         p2p.serial_number = wpa_s->conf->serial_number;
4341         if (wpa_s->wps) {
4342                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4343                 p2p.config_methods = wpa_s->wps->config_methods;
4344         }
4345
4346         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4347                 wpa_printf(MSG_ERROR,
4348                            "P2P: Failed to configure supported channel list");
4349                 return -1;
4350         }
4351
4352         if (wpa_s->conf->p2p_listen_reg_class &&
4353             wpa_s->conf->p2p_listen_channel) {
4354                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4355                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4356                 p2p.channel_forced = 1;
4357         } else {
4358                 /*
4359                  * Pick one of the social channels randomly as the listen
4360                  * channel.
4361                  */
4362                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4363                                                  &p2p.channel) != 0) {
4364                         wpa_printf(MSG_INFO,
4365                                    "P2P: No social channels supported by the driver - do not enable P2P");
4366                         return 0;
4367                 }
4368                 p2p.channel_forced = 0;
4369         }
4370         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4371                    p2p.reg_class, p2p.channel);
4372
4373         if (wpa_s->conf->p2p_oper_reg_class &&
4374             wpa_s->conf->p2p_oper_channel) {
4375                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4376                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4377                 p2p.cfg_op_channel = 1;
4378                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4379                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4380
4381         } else {
4382                 /*
4383                  * Use random operation channel from 2.4 GHz band social
4384                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4385                  * other preference is indicated.
4386                  */
4387                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4388                                                  &p2p.op_channel) != 0) {
4389                         wpa_printf(MSG_ERROR,
4390                                    "P2P: Failed to select random social channel as operation channel");
4391                         return -1;
4392                 }
4393                 p2p.cfg_op_channel = 0;
4394                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4395                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4396         }
4397
4398         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4399                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4400                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4401         }
4402
4403         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4404                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4405                 p2p.country[2] = 0x04;
4406         } else
4407                 os_memcpy(p2p.country, "XX\x04", 3);
4408
4409         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4410                   WPS_DEV_TYPE_LEN);
4411
4412         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4413         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4414                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4415
4416         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4417                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4418
4419         p2p.max_peers = 100;
4420
4421         if (wpa_s->conf->p2p_ssid_postfix) {
4422                 p2p.ssid_postfix_len =
4423                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4424                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4425                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4426                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4427                           p2p.ssid_postfix_len);
4428         }
4429
4430         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4431
4432         p2p.max_listen = wpa_s->max_remain_on_chan;
4433
4434         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4435             wpa_s->conf->p2p_passphrase_len <= 63)
4436                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4437         else
4438                 p2p.passphrase_len = 8;
4439
4440         global->p2p = p2p_init(&p2p);
4441         if (global->p2p == NULL)
4442                 return -1;
4443         global->p2p_init_wpa_s = wpa_s;
4444
4445         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4446                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4447                         continue;
4448                 p2p_add_wps_vendor_extension(
4449                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4450         }
4451
4452         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4453
4454         return 0;
4455 }
4456
4457
4458 /**
4459  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4460  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4461  *
4462  * This function deinitialize per-interface P2P data.
4463  */
4464 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4465 {
4466         if (wpa_s->driver && wpa_s->drv_priv)
4467                 wpa_drv_probe_req_report(wpa_s, 0);
4468
4469         if (wpa_s->go_params) {
4470                 /* Clear any stored provisioning info */
4471                 p2p_clear_provisioning_info(
4472                         wpa_s->global->p2p,
4473                         wpa_s->go_params->peer_device_addr);
4474         }
4475
4476         os_free(wpa_s->go_params);
4477         wpa_s->go_params = NULL;
4478         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4479         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4480         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4481         wpa_s->p2p_long_listen = 0;
4482         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4483         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4484         wpas_p2p_remove_pending_group_interface(wpa_s);
4485         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4486         wpas_p2p_listen_work_done(wpa_s);
4487         if (wpa_s->p2p_send_action_work) {
4488                 os_free(wpa_s->p2p_send_action_work->ctx);
4489                 radio_work_done(wpa_s->p2p_send_action_work);
4490                 wpa_s->p2p_send_action_work = NULL;
4491         }
4492         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4493
4494         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4495         wpa_s->p2p_oob_dev_pw = NULL;
4496
4497         os_free(wpa_s->p2p_group_common_freqs);
4498         wpa_s->p2p_group_common_freqs = NULL;
4499         wpa_s->p2p_group_common_freqs_num = 0;
4500
4501         /* TODO: remove group interface from the driver if this wpa_s instance
4502          * is on top of a P2P group interface */
4503 }
4504
4505
4506 /**
4507  * wpas_p2p_deinit_global - Deinitialize global P2P module
4508  * @global: Pointer to global data from wpa_supplicant_init()
4509  *
4510  * This function deinitializes the global (per device) P2P module.
4511  */
4512 static void wpas_p2p_deinit_global(struct wpa_global *global)
4513 {
4514         struct wpa_supplicant *wpa_s, *tmp;
4515
4516         wpa_s = global->ifaces;
4517
4518         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4519
4520         /* Remove remaining P2P group interfaces */
4521         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4522                 wpa_s = wpa_s->next;
4523         while (wpa_s) {
4524                 tmp = global->ifaces;
4525                 while (tmp &&
4526                        (tmp == wpa_s ||
4527                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4528                         tmp = tmp->next;
4529                 }
4530                 if (tmp == NULL)
4531                         break;
4532                 /* Disconnect from the P2P group and deinit the interface */
4533                 wpas_p2p_disconnect(tmp);
4534         }
4535
4536         /*
4537          * Deinit GO data on any possibly remaining interface (if main
4538          * interface is used as GO).
4539          */
4540         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4541                 if (wpa_s->ap_iface)
4542                         wpas_p2p_group_deinit(wpa_s);
4543         }
4544
4545         p2p_deinit(global->p2p);
4546         global->p2p = NULL;
4547         global->p2p_init_wpa_s = NULL;
4548 }
4549
4550
4551 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4552 {
4553         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4554             wpa_s->conf->p2p_no_group_iface)
4555                 return 0; /* separate interface disabled per configuration */
4556         if (wpa_s->drv_flags &
4557             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4558              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4559                 return 1; /* P2P group requires a new interface in every case
4560                            */
4561         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4562                 return 0; /* driver does not support concurrent operations */
4563         if (wpa_s->global->ifaces->next)
4564                 return 1; /* more that one interface already in use */
4565         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4566                 return 1; /* this interface is already in use */
4567         return 0;
4568 }
4569
4570
4571 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4572                                  const u8 *peer_addr,
4573                                  enum p2p_wps_method wps_method,
4574                                  int go_intent, const u8 *own_interface_addr,
4575                                  unsigned int force_freq, int persistent_group,
4576                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4577 {
4578         if (persistent_group && wpa_s->conf->persistent_reconnect)
4579                 persistent_group = 2;
4580
4581         /*
4582          * Increase GO config timeout if HT40 is used since it takes some time
4583          * to scan channels for coex purposes before the BSS can be started.
4584          */
4585         p2p_set_config_timeout(wpa_s->global->p2p,
4586                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4587
4588         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4589                            go_intent, own_interface_addr, force_freq,
4590                            persistent_group, ssid ? ssid->ssid : NULL,
4591                            ssid ? ssid->ssid_len : 0,
4592                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4593                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4594                            0);
4595 }
4596
4597
4598 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4599                                 const u8 *peer_addr,
4600                                 enum p2p_wps_method wps_method,
4601                                 int go_intent, const u8 *own_interface_addr,
4602                                 unsigned int force_freq, int persistent_group,
4603                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4604 {
4605         if (persistent_group && wpa_s->conf->persistent_reconnect)
4606                 persistent_group = 2;
4607
4608         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4609                              go_intent, own_interface_addr, force_freq,
4610                              persistent_group, ssid ? ssid->ssid : NULL,
4611                              ssid ? ssid->ssid_len : 0, pref_freq,
4612                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4613                              0);
4614 }
4615
4616
4617 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4618 {
4619         wpa_s->p2p_join_scan_count++;
4620         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4621                    wpa_s->p2p_join_scan_count);
4622         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4623                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4624                            " for join operationg - stop join attempt",
4625                            MAC2STR(wpa_s->pending_join_iface_addr));
4626                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4627                 if (wpa_s->p2p_auto_pd) {
4628                         wpa_s->p2p_auto_pd = 0;
4629                         wpa_msg_global(wpa_s, MSG_INFO,
4630                                        P2P_EVENT_PROV_DISC_FAILURE
4631                                        " p2p_dev_addr=" MACSTR " status=N/A",
4632                                        MAC2STR(wpa_s->pending_join_dev_addr));
4633                         return;
4634                 }
4635                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4636                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4637                 wpas_notify_p2p_group_formation_failure(wpa_s, "");
4638         }
4639 }
4640
4641
4642 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4643 {
4644         int res;
4645         unsigned int num, i;
4646         struct wpa_used_freq_data *freqs;
4647
4648         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4649                 /* Multiple channels are supported and not all are in use */
4650                 return 0;
4651         }
4652
4653         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4654                           sizeof(struct wpa_used_freq_data));
4655         if (!freqs)
4656                 return 1;
4657
4658         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4659                                         wpa_s->num_multichan_concurrent);
4660
4661         for (i = 0; i < num; i++) {
4662                 if (freqs[i].freq == freq) {
4663                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4664                                    freq);
4665                         res = 0;
4666                         goto exit_free;
4667                 }
4668         }
4669
4670         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4671         res = 1;
4672
4673 exit_free:
4674         os_free(freqs);
4675         return res;
4676 }
4677
4678
4679 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4680                             const u8 *peer_dev_addr)
4681 {
4682         struct wpa_bss *bss;
4683         int updated;
4684
4685         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4686         if (bss == NULL)
4687                 return -1;
4688         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4689                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4690                            "last scan");
4691                 return 0;
4692         }
4693
4694         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4695                                     &bss->last_update);
4696         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4697                    "%ld.%06ld (%supdated in last scan)",
4698                    bss->last_update.sec, bss->last_update.usec,
4699                    updated ? "": "not ");
4700
4701         return updated;
4702 }
4703
4704
4705 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4706                                    struct wpa_scan_results *scan_res)
4707 {
4708         struct wpa_bss *bss = NULL;
4709         int freq;
4710         u8 iface_addr[ETH_ALEN];
4711
4712         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4713
4714         if (wpa_s->global->p2p_disabled)
4715                 return;
4716
4717         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4718                    scan_res ? (int) scan_res->num : -1,
4719                    wpa_s->p2p_auto_join ? "auto_" : "");
4720
4721         if (scan_res)
4722                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4723
4724         if (wpa_s->p2p_auto_pd) {
4725                 int join = wpas_p2p_peer_go(wpa_s,
4726                                             wpa_s->pending_join_dev_addr);
4727                 if (join == 0 &&
4728                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4729                         wpa_s->auto_pd_scan_retry++;
4730                         bss = wpa_bss_get_bssid_latest(
4731                                 wpa_s, wpa_s->pending_join_dev_addr);
4732                         if (bss) {
4733                                 freq = bss->freq;
4734                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4735                                            "the peer " MACSTR " at %d MHz",
4736                                            wpa_s->auto_pd_scan_retry,
4737                                            MAC2STR(wpa_s->
4738                                                    pending_join_dev_addr),
4739                                            freq);
4740                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4741                                 return;
4742                         }
4743                 }
4744
4745                 if (join < 0)
4746                         join = 0;
4747
4748                 wpa_s->p2p_auto_pd = 0;
4749                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4750                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4751                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4752                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4753                                       wpa_s->pending_join_dev_addr, NULL,
4754                                       wpa_s->pending_pd_config_methods, join,
4755                                       0, wpa_s->user_initiated_pd) < 0) {
4756                         wpa_s->p2p_auto_pd = 0;
4757                         wpa_msg_global(wpa_s, MSG_INFO,
4758                                        P2P_EVENT_PROV_DISC_FAILURE
4759                                        " p2p_dev_addr=" MACSTR " status=N/A",
4760                                        MAC2STR(wpa_s->pending_join_dev_addr));
4761                 }
4762                 return;
4763         }
4764
4765         if (wpa_s->p2p_auto_join) {
4766                 int join = wpas_p2p_peer_go(wpa_s,
4767                                             wpa_s->pending_join_dev_addr);
4768                 if (join < 0) {
4769                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4770                                    "running a GO -> use GO Negotiation");
4771                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4772                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4773                                        "reason=peer-not-running-GO");
4774                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4775                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4776                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4777                                          wpa_s->p2p_go_intent,
4778                                          wpa_s->p2p_connect_freq,
4779                                          wpa_s->p2p_go_vht_center_freq2,
4780                                          wpa_s->p2p_persistent_id,
4781                                          wpa_s->p2p_pd_before_go_neg,
4782                                          wpa_s->p2p_go_ht40,
4783                                          wpa_s->p2p_go_vht,
4784                                          wpa_s->p2p_go_max_oper_chwidth,
4785                                          NULL, 0);
4786                         return;
4787                 }
4788
4789                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4790                            "try to join the group", join ? "" :
4791                            " in older scan");
4792                 if (!join) {
4793                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4794                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4795                         wpa_s->p2p_fallback_to_go_neg = 1;
4796                 }
4797         }
4798
4799         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4800                                  wpa_s->pending_join_iface_addr);
4801         if (freq < 0 &&
4802             p2p_get_interface_addr(wpa_s->global->p2p,
4803                                    wpa_s->pending_join_dev_addr,
4804                                    iface_addr) == 0 &&
4805             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4806             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4807                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4808                            "address for join from " MACSTR " to " MACSTR
4809                            " based on newly discovered P2P peer entry",
4810                            MAC2STR(wpa_s->pending_join_iface_addr),
4811                            MAC2STR(iface_addr));
4812                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4813                           ETH_ALEN);
4814
4815                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4816                                          wpa_s->pending_join_iface_addr);
4817         }
4818         if (freq >= 0) {
4819                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4820                            "from P2P peer table: %d MHz", freq);
4821         }
4822         if (wpa_s->p2p_join_ssid_len) {
4823                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4824                            MACSTR " and SSID %s",
4825                            MAC2STR(wpa_s->pending_join_iface_addr),
4826                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4827                                         wpa_s->p2p_join_ssid_len));
4828                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4829                                   wpa_s->p2p_join_ssid,
4830                                   wpa_s->p2p_join_ssid_len);
4831         } else if (!bss) {
4832                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4833                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4834                 bss = wpa_bss_get_bssid_latest(wpa_s,
4835                                                wpa_s->pending_join_iface_addr);
4836         }
4837         if (bss) {
4838                 u8 dev_addr[ETH_ALEN];
4839
4840                 freq = bss->freq;
4841                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4842                            "from BSS table: %d MHz (SSID %s)", freq,
4843                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4844                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4845                                        dev_addr) == 0 &&
4846                     os_memcmp(wpa_s->pending_join_dev_addr,
4847                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4848                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4849                               ETH_ALEN) != 0) {
4850                         wpa_printf(MSG_DEBUG,
4851                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4852                                    MAC2STR(dev_addr),
4853                                    MAC2STR(wpa_s->pending_join_dev_addr));
4854                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4855                                   ETH_ALEN);
4856                 }
4857         }
4858         if (freq > 0) {
4859                 u16 method;
4860
4861                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4862                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4863                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4864                                        "reason=FREQ_CONFLICT");
4865                         wpas_notify_p2p_group_formation_failure(
4866                                 wpa_s, "FREQ_CONFLICT");
4867                         return;
4868                 }
4869
4870                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4871                            "prior to joining an existing group (GO " MACSTR
4872                            " freq=%u MHz)",
4873                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4874                 wpa_s->pending_pd_before_join = 1;
4875
4876                 switch (wpa_s->pending_join_wps_method) {
4877                 case WPS_PIN_DISPLAY:
4878                         method = WPS_CONFIG_KEYPAD;
4879                         break;
4880                 case WPS_PIN_KEYPAD:
4881                         method = WPS_CONFIG_DISPLAY;
4882                         break;
4883                 case WPS_PBC:
4884                         method = WPS_CONFIG_PUSHBUTTON;
4885                         break;
4886                 case WPS_P2PS:
4887                         method = WPS_CONFIG_P2PS;
4888                         break;
4889                 default:
4890                         method = 0;
4891                         break;
4892                 }
4893
4894                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4895                                                wpa_s->pending_join_dev_addr) ==
4896                      method)) {
4897                         /*
4898                          * We have already performed provision discovery for
4899                          * joining the group. Proceed directly to join
4900                          * operation without duplicated provision discovery. */
4901                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4902                                    "with " MACSTR " already done - proceed to "
4903                                    "join",
4904                                    MAC2STR(wpa_s->pending_join_dev_addr));
4905                         wpa_s->pending_pd_before_join = 0;
4906                         goto start;
4907                 }
4908
4909                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4910                                       wpa_s->pending_join_dev_addr,
4911                                       NULL, method, 1,
4912                                       freq, wpa_s->user_initiated_pd) < 0) {
4913                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4914                                    "Discovery Request before joining an "
4915                                    "existing group");
4916                         wpa_s->pending_pd_before_join = 0;
4917                         goto start;
4918                 }
4919                 return;
4920         }
4921
4922         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4923         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4924         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4925         wpas_p2p_check_join_scan_limit(wpa_s);
4926         return;
4927
4928 start:
4929         /* Start join operation immediately */
4930         wpas_p2p_join_start(wpa_s, 0, wpa_s->p2p_join_ssid,
4931                             wpa_s->p2p_join_ssid_len);
4932 }
4933
4934
4935 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4936                                    const u8 *ssid, size_t ssid_len)
4937 {
4938         int ret;
4939         struct wpa_driver_scan_params params;
4940         struct wpabuf *wps_ie, *ies;
4941         size_t ielen;
4942         int freqs[2] = { 0, 0 };
4943
4944         os_memset(&params, 0, sizeof(params));
4945
4946         /* P2P Wildcard SSID */
4947         params.num_ssids = 1;
4948         if (ssid && ssid_len) {
4949                 params.ssids[0].ssid = ssid;
4950                 params.ssids[0].ssid_len = ssid_len;
4951                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4952                 wpa_s->p2p_join_ssid_len = ssid_len;
4953         } else {
4954                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4955                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4956                 wpa_s->p2p_join_ssid_len = 0;
4957         }
4958
4959         wpa_s->wps->dev.p2p = 1;
4960         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4961                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4962                                         NULL);
4963         if (wps_ie == NULL) {
4964                 wpas_p2p_scan_res_join(wpa_s, NULL);
4965                 return;
4966         }
4967
4968         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4969         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4970         if (ies == NULL) {
4971                 wpabuf_free(wps_ie);
4972                 wpas_p2p_scan_res_join(wpa_s, NULL);
4973                 return;
4974         }
4975         wpabuf_put_buf(ies, wps_ie);
4976         wpabuf_free(wps_ie);
4977
4978         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4979
4980         params.p2p_probe = 1;
4981         params.extra_ies = wpabuf_head(ies);
4982         params.extra_ies_len = wpabuf_len(ies);
4983
4984         if (!freq) {
4985                 int oper_freq;
4986                 /*
4987                  * If freq is not provided, check the operating freq of the GO
4988                  * and use a single channel scan on if possible.
4989                  */
4990                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4991                                               wpa_s->pending_join_iface_addr);
4992                 if (oper_freq > 0)
4993                         freq = oper_freq;
4994         }
4995         if (freq > 0) {
4996                 freqs[0] = freq;
4997                 params.freqs = freqs;
4998         }
4999
5000         /*
5001          * Run a scan to update BSS table and start Provision Discovery once
5002          * the new scan results become available.
5003          */
5004         ret = wpa_drv_scan(wpa_s, &params);
5005         if (!ret) {
5006                 os_get_reltime(&wpa_s->scan_trigger_time);
5007                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
5008                 wpa_s->own_scan_requested = 1;
5009         }
5010
5011         wpabuf_free(ies);
5012
5013         if (ret) {
5014                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
5015                            "try again later");
5016                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5017                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
5018                 wpas_p2p_check_join_scan_limit(wpa_s);
5019         }
5020 }
5021
5022
5023 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
5024 {
5025         struct wpa_supplicant *wpa_s = eloop_ctx;
5026         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
5027 }
5028
5029
5030 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
5031                          const u8 *dev_addr, enum p2p_wps_method wps_method,
5032                          int auto_join, int op_freq,
5033                          const u8 *ssid, size_t ssid_len)
5034 {
5035         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
5036                    MACSTR " dev " MACSTR " op_freq=%d)%s",
5037                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
5038                    auto_join ? " (auto_join)" : "");
5039         if (ssid && ssid_len) {
5040                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
5041                            wpa_ssid_txt(ssid, ssid_len));
5042         }
5043
5044         wpa_s->p2p_auto_pd = 0;
5045         wpa_s->p2p_auto_join = !!auto_join;
5046         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
5047         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
5048         wpa_s->pending_join_wps_method = wps_method;
5049
5050         /* Make sure we are not running find during connection establishment */
5051         wpas_p2p_stop_find(wpa_s);
5052
5053         wpa_s->p2p_join_scan_count = 0;
5054         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
5055         return 0;
5056 }
5057
5058
5059 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
5060                                const u8 *ssid, size_t ssid_len)
5061 {
5062         struct wpa_supplicant *group;
5063         struct p2p_go_neg_results res;
5064         struct wpa_bss *bss;
5065
5066         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
5067         if (group == NULL)
5068                 return -1;
5069         if (group != wpa_s) {
5070                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
5071                           sizeof(group->p2p_pin));
5072                 group->p2p_wps_method = wpa_s->p2p_wps_method;
5073         } else {
5074                 /*
5075                  * Need to mark the current interface for p2p_group_formation
5076                  * when a separate group interface is not used. This is needed
5077                  * to allow p2p_cancel stop a pending p2p_connect-join.
5078                  * wpas_p2p_init_group_interface() addresses this for the case
5079                  * where a separate group interface is used.
5080                  */
5081                 wpa_s->global->p2p_group_formation = wpa_s;
5082         }
5083
5084         group->p2p_in_provisioning = 1;
5085         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
5086
5087         os_memset(&res, 0, sizeof(res));
5088         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
5089         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
5090                   ETH_ALEN);
5091         res.wps_method = wpa_s->pending_join_wps_method;
5092         if (freq && ssid && ssid_len) {
5093                 res.freq = freq;
5094                 res.ssid_len = ssid_len;
5095                 os_memcpy(res.ssid, ssid, ssid_len);
5096         } else {
5097                 if (ssid && ssid_len) {
5098                         bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
5099                                           ssid, ssid_len);
5100                 } else {
5101                         bss = wpa_bss_get_bssid_latest(
5102                                 wpa_s, wpa_s->pending_join_iface_addr);
5103                 }
5104                 if (bss) {
5105                         res.freq = bss->freq;
5106                         res.ssid_len = bss->ssid_len;
5107                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
5108                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
5109                                    bss->freq,
5110                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
5111                 } else if (ssid && ssid_len) {
5112                         res.ssid_len = ssid_len;
5113                         os_memcpy(res.ssid, ssid, ssid_len);
5114                         wpa_printf(MSG_DEBUG, "P2P: Join target GO (SSID %s)",
5115                                    wpa_ssid_txt(ssid, ssid_len));
5116                 }
5117         }
5118
5119         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
5120                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
5121                            "starting client");
5122                 wpa_drv_cancel_remain_on_channel(wpa_s);
5123                 wpa_s->off_channel_freq = 0;
5124                 wpa_s->roc_waiting_drv_freq = 0;
5125         }
5126         wpas_start_wps_enrollee(group, &res);
5127
5128         /*
5129          * Allow a longer timeout for join-a-running-group than normal 15
5130          * second group formation timeout since the GO may not have authorized
5131          * our connection yet.
5132          */
5133         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
5134         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
5135                                wpa_s, NULL);
5136
5137         return 0;
5138 }
5139
5140
5141 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
5142                                 int *force_freq, int *pref_freq, int go,
5143                                 unsigned int *pref_freq_list,
5144                                 unsigned int *num_pref_freq)
5145 {
5146         struct wpa_used_freq_data *freqs;
5147         int res, best_freq, num_unused;
5148         unsigned int freq_in_use = 0, num, i, max_pref_freq;
5149
5150         max_pref_freq = *num_pref_freq;
5151         *num_pref_freq = 0;
5152
5153         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5154                           sizeof(struct wpa_used_freq_data));
5155         if (!freqs)
5156                 return -1;
5157
5158         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5159                                         wpa_s->num_multichan_concurrent);
5160
5161         /*
5162          * It is possible that the total number of used frequencies is bigger
5163          * than the number of frequencies used for P2P, so get the system wide
5164          * number of unused frequencies.
5165          */
5166         num_unused = wpas_p2p_num_unused_channels(wpa_s);
5167
5168         wpa_printf(MSG_DEBUG,
5169                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
5170                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
5171
5172         if (freq > 0) {
5173                 int ret;
5174                 if (go)
5175                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
5176                 else
5177                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
5178                 if (!ret) {
5179                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5180                             ieee80211_is_dfs(freq)) {
5181                                 /*
5182                                  * If freq is a DFS channel and DFS is offloaded
5183                                  * to the driver, allow P2P GO to use it.
5184                                  */
5185                                 wpa_printf(MSG_DEBUG,
5186                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
5187                                            freq);
5188                         } else {
5189                                 wpa_printf(MSG_DEBUG,
5190                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
5191                                            freq);
5192                                 res = -3;
5193                                 goto exit_free;
5194                         }
5195                 }
5196
5197                 for (i = 0; i < num; i++) {
5198                         if (freqs[i].freq == freq)
5199                                 freq_in_use = 1;
5200                 }
5201
5202                 if (num_unused <= 0 && !freq_in_use) {
5203                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
5204                                    freq);
5205                         res = -2;
5206                         goto exit_free;
5207                 }
5208                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
5209                            "requested channel (%u MHz)", freq);
5210                 *force_freq = freq;
5211                 goto exit_ok;
5212         }
5213
5214         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5215
5216         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
5217                 enum wpa_driver_if_type iface_type;
5218
5219                 if (go)
5220                         iface_type = WPA_IF_P2P_GO;
5221                 else
5222                         iface_type = WPA_IF_P2P_CLIENT;
5223
5224                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
5225                            best_freq, go);
5226
5227                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
5228                                                  &max_pref_freq,
5229                                                  pref_freq_list);
5230                 if (!res && max_pref_freq > 0) {
5231                         *num_pref_freq = max_pref_freq;
5232                         i = 0;
5233                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5234                                                         pref_freq_list[i]) &&
5235                                i < *num_pref_freq) {
5236                                 wpa_printf(MSG_DEBUG,
5237                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5238                                            i, pref_freq_list[i]);
5239                                 i++;
5240                         }
5241                         if (i != *num_pref_freq) {
5242                                 best_freq = pref_freq_list[i];
5243                                 wpa_printf(MSG_DEBUG,
5244                                            "P2P: Using preferred_freq_list[%d]=%d",
5245                                            i, best_freq);
5246                         } else {
5247                                 wpa_printf(MSG_DEBUG,
5248                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5249                                 *num_pref_freq = 0;
5250                         }
5251                 } else {
5252                         wpa_printf(MSG_DEBUG,
5253                                    "P2P: No preferred frequency list available");
5254                 }
5255         }
5256
5257         /* We have a candidate frequency to use */
5258         if (best_freq > 0) {
5259                 if (*pref_freq == 0 && num_unused > 0) {
5260                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5261                                    best_freq);
5262                         *pref_freq = best_freq;
5263                 } else {
5264                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5265                                    best_freq);
5266                         *force_freq = best_freq;
5267                 }
5268         } else if (num_unused > 0) {
5269                 wpa_printf(MSG_DEBUG,
5270                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5271                 *force_freq = 0;
5272         } else {
5273                 wpa_printf(MSG_DEBUG,
5274                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5275                 res = -2;
5276                 goto exit_free;
5277         }
5278
5279 exit_ok:
5280         res = 0;
5281 exit_free:
5282         os_free(freqs);
5283         return res;
5284 }
5285
5286
5287 /**
5288  * wpas_p2p_connect - Request P2P Group Formation to be started
5289  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5290  * @peer_addr: Address of the peer P2P Device
5291  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5292  * @persistent_group: Whether to create a persistent group
5293  * @auto_join: Whether to select join vs. GO Negotiation automatically
5294  * @join: Whether to join an existing group (as a client) instead of starting
5295  *      Group Owner negotiation; @peer_addr is BSSID in that case
5296  * @auth: Whether to only authorize the connection instead of doing that and
5297  *      initiating Group Owner negotiation
5298  * @go_intent: GO Intent or -1 to use default
5299  * @freq: Frequency for the group or 0 for auto-selection
5300  * @freq2: Center frequency of segment 1 for the GO operating in VHT 80P80 mode
5301  * @persistent_id: Persistent group credentials to use for forcing GO
5302  *      parameters or -1 to generate new values (SSID/passphrase)
5303  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5304  *      interoperability workaround when initiating group formation
5305  * @ht40: Start GO with 40 MHz channel width
5306  * @vht:  Start GO with VHT support
5307  * @vht_chwidth: Channel width supported by GO operating with VHT support
5308  *      (VHT_CHANWIDTH_*).
5309  * @group_ssid: Specific Group SSID for join or %NULL if not set
5310  * @group_ssid_len: Length of @group_ssid in octets
5311  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5312  *      failure, -2 on failure due to channel not currently available,
5313  *      -3 if forced channel is not supported
5314  */
5315 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5316                      const char *pin, enum p2p_wps_method wps_method,
5317                      int persistent_group, int auto_join, int join, int auth,
5318                      int go_intent, int freq, unsigned int vht_center_freq2,
5319                      int persistent_id, int pd, int ht40, int vht,
5320                      unsigned int vht_chwidth, const u8 *group_ssid,
5321                      size_t group_ssid_len)
5322 {
5323         int force_freq = 0, pref_freq = 0;
5324         int ret = 0, res;
5325         enum wpa_driver_if_type iftype;
5326         const u8 *if_addr;
5327         struct wpa_ssid *ssid = NULL;
5328         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5329
5330         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5331                 return -1;
5332
5333         if (persistent_id >= 0) {
5334                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5335                 if (ssid == NULL || ssid->disabled != 2 ||
5336                     ssid->mode != WPAS_MODE_P2P_GO)
5337                         return -1;
5338         }
5339
5340         os_free(wpa_s->global->add_psk);
5341         wpa_s->global->add_psk = NULL;
5342
5343         wpa_s->global->p2p_fail_on_wps_complete = 0;
5344         wpa_s->global->pending_p2ps_group = 0;
5345         wpa_s->global->pending_p2ps_group_freq = 0;
5346         wpa_s->p2ps_method_config_any = 0;
5347
5348         if (go_intent < 0)
5349                 go_intent = wpa_s->conf->p2p_go_intent;
5350
5351         if (!auth)
5352                 wpa_s->p2p_long_listen = 0;
5353
5354         wpa_s->p2p_wps_method = wps_method;
5355         wpa_s->p2p_persistent_group = !!persistent_group;
5356         wpa_s->p2p_persistent_id = persistent_id;
5357         wpa_s->p2p_go_intent = go_intent;
5358         wpa_s->p2p_connect_freq = freq;
5359         wpa_s->p2p_fallback_to_go_neg = 0;
5360         wpa_s->p2p_pd_before_go_neg = !!pd;
5361         wpa_s->p2p_go_ht40 = !!ht40;
5362         wpa_s->p2p_go_vht = !!vht;
5363         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
5364         wpa_s->p2p_go_max_oper_chwidth = vht_chwidth;
5365
5366         if (pin)
5367                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5368         else if (wps_method == WPS_PIN_DISPLAY) {
5369                 ret = wps_generate_pin();
5370                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5371                                   "%08d", ret);
5372                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5373                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5374                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5375                            wpa_s->p2p_pin);
5376         } else
5377                 wpa_s->p2p_pin[0] = '\0';
5378
5379         if (join || auto_join) {
5380                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5381                 if (auth) {
5382                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5383                                    "connect a running group from " MACSTR,
5384                                    MAC2STR(peer_addr));
5385                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5386                         return ret;
5387                 }
5388                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5389                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5390                                            iface_addr) < 0) {
5391                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5392                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5393                                          dev_addr);
5394                 }
5395                 if (auto_join) {
5396                         os_get_reltime(&wpa_s->p2p_auto_started);
5397                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5398                                    "%ld.%06ld",
5399                                    wpa_s->p2p_auto_started.sec,
5400                                    wpa_s->p2p_auto_started.usec);
5401                 }
5402                 wpa_s->user_initiated_pd = 1;
5403                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5404                                   auto_join, freq,
5405                                   group_ssid, group_ssid_len) < 0)
5406                         return -1;
5407                 return ret;
5408         }
5409
5410         size = P2P_MAX_PREF_CHANNELS;
5411         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5412                                    go_intent == 15, pref_freq_list, &size);
5413         if (res)
5414                 return res;
5415         wpas_p2p_set_own_freq_preference(wpa_s,
5416                                          force_freq ? force_freq : pref_freq);
5417
5418         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5419
5420         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5421
5422         if (wpa_s->create_p2p_iface) {
5423                 /* Prepare to add a new interface for the group */
5424                 iftype = WPA_IF_P2P_GROUP;
5425                 if (go_intent == 15)
5426                         iftype = WPA_IF_P2P_GO;
5427                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5428                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5429                                    "interface for the group");
5430                         return -1;
5431                 }
5432
5433                 if_addr = wpa_s->pending_interface_addr;
5434         } else {
5435                 if_addr = wpa_s->own_addr;
5436                 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5437         }
5438
5439         if (auth) {
5440                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5441                                          go_intent, if_addr,
5442                                          force_freq, persistent_group, ssid,
5443                                          pref_freq) < 0)
5444                         return -1;
5445                 return ret;
5446         }
5447
5448         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5449                                   go_intent, if_addr, force_freq,
5450                                   persistent_group, ssid, pref_freq) < 0) {
5451                 if (wpa_s->create_p2p_iface)
5452                         wpas_p2p_remove_pending_group_interface(wpa_s);
5453                 return -1;
5454         }
5455         return ret;
5456 }
5457
5458
5459 /**
5460  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5461  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5462  * @freq: Frequency of the channel in MHz
5463  * @duration: Duration of the stay on the channel in milliseconds
5464  *
5465  * This callback is called when the driver indicates that it has started the
5466  * requested remain-on-channel duration.
5467  */
5468 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5469                                    unsigned int freq, unsigned int duration)
5470 {
5471         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5472                 return;
5473         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)",
5474                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5475                    wpa_s->roc_waiting_drv_freq, freq, duration);
5476         if (wpa_s->off_channel_freq &&
5477             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5478                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5479                               wpa_s->pending_listen_duration);
5480                 wpa_s->pending_listen_freq = 0;
5481         } else {
5482                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5483                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5484                            freq, duration);
5485         }
5486 }
5487
5488
5489 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5490 {
5491         /* Limit maximum Listen state time based on driver limitation. */
5492         if (timeout > wpa_s->max_remain_on_chan)
5493                 timeout = wpa_s->max_remain_on_chan;
5494
5495         return p2p_listen(wpa_s->global->p2p, timeout);
5496 }
5497
5498
5499 /**
5500  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5501  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5502  * @freq: Frequency of the channel in MHz
5503  *
5504  * This callback is called when the driver indicates that a remain-on-channel
5505  * operation has been completed, i.e., the duration on the requested channel
5506  * has timed out.
5507  */
5508 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5509                                           unsigned int freq)
5510 {
5511         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5512                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5513                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5514         wpas_p2p_listen_work_done(wpa_s);
5515         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5516                 return;
5517         if (wpa_s->p2p_long_listen > 0)
5518                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5519         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5520                 return; /* P2P module started a new operation */
5521         if (offchannel_pending_action_tx(wpa_s))
5522                 return;
5523         if (wpa_s->p2p_long_listen > 0) {
5524                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5525                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5526         } else {
5527                 /*
5528                  * When listen duration is over, stop listen & update p2p_state
5529                  * to IDLE.
5530                  */
5531                 p2p_stop_listen(wpa_s->global->p2p);
5532         }
5533 }
5534
5535
5536 /**
5537  * wpas_p2p_group_remove - Remove a P2P group
5538  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5539  * @ifname: Network interface name of the group interface or "*" to remove all
5540  *      groups
5541  * Returns: 0 on success, -1 on failure
5542  *
5543  * This function is used to remove a P2P group. This can be used to disconnect
5544  * from a group in which the local end is a P2P Client or to end a P2P Group in
5545  * case the local end is the Group Owner. If a virtual network interface was
5546  * created for this group, that interface will be removed. Otherwise, only the
5547  * configured P2P group network will be removed from the interface.
5548  */
5549 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5550 {
5551         struct wpa_global *global = wpa_s->global;
5552         struct wpa_supplicant *calling_wpa_s = wpa_s;
5553
5554         if (os_strcmp(ifname, "*") == 0) {
5555                 struct wpa_supplicant *prev;
5556                 wpa_s = global->ifaces;
5557                 while (wpa_s) {
5558                         prev = wpa_s;
5559                         wpa_s = wpa_s->next;
5560                         if (prev->p2p_group_interface !=
5561                             NOT_P2P_GROUP_INTERFACE ||
5562                             (prev->current_ssid &&
5563                              prev->current_ssid->p2p_group))
5564                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5565                 }
5566                 return 0;
5567         }
5568
5569         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5570                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5571                         break;
5572         }
5573
5574         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5575 }
5576
5577
5578 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5579 {
5580         unsigned int r;
5581
5582         if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5583                 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5584                 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5585                 int res;
5586
5587                 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5588                                                  &size, pref_freq_list);
5589                 if (!res && size > 0) {
5590                         i = 0;
5591                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5592                                                         pref_freq_list[i]) &&
5593                                i < size) {
5594                                 wpa_printf(MSG_DEBUG,
5595                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5596                                            i, pref_freq_list[i]);
5597                                 i++;
5598                         }
5599                         if (i != size) {
5600                                 freq = pref_freq_list[i];
5601                                 wpa_printf(MSG_DEBUG,
5602                                            "P2P: Using preferred_freq_list[%d]=%d",
5603                                            i, freq);
5604                         } else {
5605                                 wpa_printf(MSG_DEBUG,
5606                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5607                         }
5608                 } else {
5609                         wpa_printf(MSG_DEBUG,
5610                                    "P2P: No preferred frequency list available");
5611                 }
5612         }
5613
5614         if (freq == 2) {
5615                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5616                            "band");
5617                 if (wpa_s->best_24_freq > 0 &&
5618                     p2p_supported_freq_go(wpa_s->global->p2p,
5619                                           wpa_s->best_24_freq)) {
5620                         freq = wpa_s->best_24_freq;
5621                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5622                                    "channel: %d MHz", freq);
5623                 } else {
5624                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5625                                 return -1;
5626                         freq = 2412 + (r % 3) * 25;
5627                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5628                                    "channel: %d MHz", freq);
5629                 }
5630         }
5631
5632         if (freq == 5) {
5633                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5634                            "band");
5635                 if (wpa_s->best_5_freq > 0 &&
5636                     p2p_supported_freq_go(wpa_s->global->p2p,
5637                                        wpa_s->best_5_freq)) {
5638                         freq = wpa_s->best_5_freq;
5639                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5640                                    "channel: %d MHz", freq);
5641                 } else {
5642                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5643                                 return -1;
5644                         freq = 5180 + (r % 4) * 20;
5645                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5646                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5647                                            "5 GHz channel for P2P group");
5648                                 return -1;
5649                         }
5650                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5651                                    "channel: %d MHz", freq);
5652                 }
5653         }
5654
5655         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5656                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5657                     ieee80211_is_dfs(freq)) {
5658                         /*
5659                          * If freq is a DFS channel and DFS is offloaded to the
5660                          * driver, allow P2P GO to use it.
5661                          */
5662                         wpa_printf(MSG_DEBUG, "P2P: "
5663                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5664                                    __func__, freq);
5665                         return freq;
5666                 }
5667                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5668                            "(%u MHz) is not supported for P2P uses",
5669                            freq);
5670                 return -1;
5671         }
5672
5673         return freq;
5674 }
5675
5676
5677 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5678                                       const struct p2p_channels *channels,
5679                                       int freq)
5680 {
5681         if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5682             p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5683             freq_included(wpa_s, channels, freq))
5684                 return 1;
5685         return 0;
5686 }
5687
5688
5689 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5690                                             struct p2p_go_neg_results *params,
5691                                             const struct p2p_channels *channels)
5692 {
5693         unsigned int i, r;
5694
5695         /* first try some random selection of the social channels */
5696         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5697                 return;
5698
5699         for (i = 0; i < 3; i++) {
5700                 params->freq = 2412 + ((r + i) % 3) * 25;
5701                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5702                         goto out;
5703         }
5704
5705         /* try all other channels in operating class 81 */
5706         for (i = 0; i < 11; i++) {
5707                 params->freq = 2412 + i * 5;
5708
5709                 /* skip social channels; covered in the previous loop */
5710                 if (params->freq == 2412 ||
5711                     params->freq == 2437 ||
5712                     params->freq == 2462)
5713                         continue;
5714
5715                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5716                         goto out;
5717         }
5718
5719         /* try all channels in operating class 115 */
5720         for (i = 0; i < 4; i++) {
5721                 params->freq = 5180 + i * 20;
5722                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5723                     freq_included(wpa_s, channels, params->freq) &&
5724                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5725                         goto out;
5726         }
5727
5728         /* try all channels in operating class 124 */
5729         for (i = 0; i < 4; i++) {
5730                 params->freq = 5745 + i * 20;
5731                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5732                     freq_included(wpa_s, channels, params->freq) &&
5733                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5734                         goto out;
5735         }
5736
5737         /* try social channel class 180 channel 2 */
5738         params->freq = 58320 + 1 * 2160;
5739         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5740             freq_included(wpa_s, channels, params->freq) &&
5741             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5742                 goto out;
5743
5744         /* try all channels in reg. class 180 */
5745         for (i = 0; i < 4; i++) {
5746                 params->freq = 58320 + i * 2160;
5747                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5748                     freq_included(wpa_s, channels, params->freq) &&
5749                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5750                         goto out;
5751         }
5752
5753         params->freq = 0;
5754         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5755         return;
5756 out:
5757         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5758                    params->freq);
5759 }
5760
5761
5762 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5763                                    struct p2p_go_neg_results *params,
5764                                    int freq, int vht_center_freq2, int ht40,
5765                                    int vht, int max_oper_chwidth,
5766                                    const struct p2p_channels *channels)
5767 {
5768         struct wpa_used_freq_data *freqs;
5769         unsigned int cand;
5770         unsigned int num, i;
5771         int ignore_no_freqs = 0;
5772
5773         os_memset(params, 0, sizeof(*params));
5774         params->role_go = 1;
5775         params->ht40 = ht40;
5776         params->vht = vht;
5777         params->max_oper_chwidth = max_oper_chwidth;
5778         params->vht_center_freq2 = vht_center_freq2;
5779
5780         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5781                           sizeof(struct wpa_used_freq_data));
5782         if (!freqs)
5783                 return -1;
5784
5785         num = get_shared_radio_freqs_data(wpa_s, freqs,
5786                                           wpa_s->num_multichan_concurrent);
5787
5788         if (wpa_s->current_ssid &&
5789             wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO &&
5790             wpa_s->wpa_state == WPA_COMPLETED) {
5791                 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5792                            __func__);
5793
5794                 /*
5795                  * If the frequency selection is done for an active P2P GO that
5796                  * is not sharing a frequency, allow to select a new frequency
5797                  * even if there are no unused frequencies as we are about to
5798                  * move the P2P GO so its frequency can be re-used.
5799                  */
5800                 for (i = 0; i < num; i++) {
5801                         if (freqs[i].freq == wpa_s->current_ssid->frequency &&
5802                             freqs[i].flags == 0) {
5803                                 ignore_no_freqs = 1;
5804                                 break;
5805                         }
5806                 }
5807         }
5808
5809         /* try using the forced freq */
5810         if (freq) {
5811                 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) {
5812                         wpa_printf(MSG_DEBUG,
5813                                    "P2P: Forced GO freq %d MHz not accepted",
5814                                    freq);
5815                         goto fail;
5816                 }
5817
5818                 for (i = 0; i < num; i++) {
5819                         if (freqs[i].freq == freq) {
5820                                 wpa_printf(MSG_DEBUG,
5821                                            "P2P: forced freq (%d MHz) is also shared",
5822                                            freq);
5823                                 params->freq = freq;
5824                                 goto success;
5825                         }
5826                 }
5827
5828                 if (!ignore_no_freqs &&
5829                     wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5830                         wpa_printf(MSG_DEBUG,
5831                                    "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5832                                    freq);
5833                         goto fail;
5834                 }
5835
5836                 wpa_printf(MSG_DEBUG,
5837                            "P2P: force GO freq (%d MHz) on a free channel",
5838                            freq);
5839                 params->freq = freq;
5840                 goto success;
5841         }
5842
5843         /* consider using one of the shared frequencies */
5844         if (num) {
5845                 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5846                 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5847                         wpa_printf(MSG_DEBUG,
5848                                    "P2P: Use shared freq (%d MHz) for GO",
5849                                    freq);
5850                         params->freq = cand;
5851                         goto success;
5852                 }
5853
5854                 /* try using one of the shared freqs */
5855                 for (i = 0; i < num; i++) {
5856                         if (wpas_p2p_supported_freq_go(wpa_s, channels,
5857                                                        freqs[i].freq)) {
5858                                 wpa_printf(MSG_DEBUG,
5859                                            "P2P: Use shared freq (%d MHz) for GO",
5860                                            freq);
5861                                 params->freq = freqs[i].freq;
5862                                 goto success;
5863                         }
5864                 }
5865         }
5866
5867         if (!ignore_no_freqs &&
5868             wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5869                 wpa_printf(MSG_DEBUG,
5870                            "P2P: Cannot force GO on any of the channels we are already using");
5871                 goto fail;
5872         }
5873
5874         /* try using the setting from the configuration file */
5875         if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5876             wpa_s->conf->p2p_oper_channel >= 1 &&
5877             wpa_s->conf->p2p_oper_channel <= 11 &&
5878             wpas_p2p_supported_freq_go(
5879                     wpa_s, channels,
5880                     2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5881                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5882                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5883                            "frequency %d MHz", params->freq);
5884                 goto success;
5885         }
5886
5887         if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5888              wpa_s->conf->p2p_oper_reg_class == 116 ||
5889              wpa_s->conf->p2p_oper_reg_class == 117 ||
5890              wpa_s->conf->p2p_oper_reg_class == 124 ||
5891              wpa_s->conf->p2p_oper_reg_class == 125 ||
5892              wpa_s->conf->p2p_oper_reg_class == 126 ||
5893              wpa_s->conf->p2p_oper_reg_class == 127) &&
5894             wpas_p2p_supported_freq_go(wpa_s, channels,
5895                                        5000 +
5896                                        5 * wpa_s->conf->p2p_oper_channel)) {
5897                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5898                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5899                            "frequency %d MHz", params->freq);
5900                 goto success;
5901         }
5902
5903         /* Try using best channels */
5904         if (wpa_s->conf->p2p_oper_channel == 0 &&
5905             wpa_s->best_overall_freq > 0 &&
5906             wpas_p2p_supported_freq_go(wpa_s, channels,
5907                                        wpa_s->best_overall_freq)) {
5908                 params->freq = wpa_s->best_overall_freq;
5909                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5910                            "channel %d MHz", params->freq);
5911                 goto success;
5912         }
5913
5914         if (wpa_s->conf->p2p_oper_channel == 0 &&
5915             wpa_s->best_24_freq > 0 &&
5916             wpas_p2p_supported_freq_go(wpa_s, channels,
5917                                        wpa_s->best_24_freq)) {
5918                 params->freq = wpa_s->best_24_freq;
5919                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5920                            "channel %d MHz", params->freq);
5921                 goto success;
5922         }
5923
5924         if (wpa_s->conf->p2p_oper_channel == 0 &&
5925             wpa_s->best_5_freq > 0 &&
5926             wpas_p2p_supported_freq_go(wpa_s, channels,
5927                                        wpa_s->best_5_freq)) {
5928                 params->freq = wpa_s->best_5_freq;
5929                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5930                            "channel %d MHz", params->freq);
5931                 goto success;
5932         }
5933
5934         /* try using preferred channels */
5935         cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
5936         if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5937                 params->freq = cand;
5938                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5939                            "channels", params->freq);
5940                 goto success;
5941         }
5942
5943         /* Try using one of the group common freqs */
5944         if (wpa_s->p2p_group_common_freqs) {
5945                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
5946                         cand = wpa_s->p2p_group_common_freqs[i];
5947                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5948                                 params->freq = cand;
5949                                 wpa_printf(MSG_DEBUG,
5950                                            "P2P: Use freq %d MHz common with the peer",
5951                                            params->freq);
5952                                 goto success;
5953                         }
5954                 }
5955         }
5956
5957         /* no preference, select some channel */
5958         wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
5959
5960         if (params->freq == 0) {
5961                 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
5962                 goto fail;
5963         }
5964
5965 success:
5966         os_free(freqs);
5967         return 0;
5968 fail:
5969         os_free(freqs);
5970         return -1;
5971 }
5972
5973
5974 static struct wpa_supplicant *
5975 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5976                          int go)
5977 {
5978         struct wpa_supplicant *group_wpa_s;
5979
5980         if (!wpas_p2p_create_iface(wpa_s)) {
5981                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5982                         "operations");
5983                 wpa_s->p2p_first_connection_timeout = 0;
5984                 return wpa_s;
5985         }
5986
5987         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5988                                          WPA_IF_P2P_CLIENT) < 0) {
5989                 wpa_msg_global(wpa_s, MSG_ERROR,
5990                                "P2P: Failed to add group interface");
5991                 return NULL;
5992         }
5993         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5994         if (group_wpa_s == NULL) {
5995                 wpa_msg_global(wpa_s, MSG_ERROR,
5996                                "P2P: Failed to initialize group interface");
5997                 wpas_p2p_remove_pending_group_interface(wpa_s);
5998                 return NULL;
5999         }
6000
6001         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
6002                 group_wpa_s->ifname);
6003         group_wpa_s->p2p_first_connection_timeout = 0;
6004         return group_wpa_s;
6005 }
6006
6007
6008 /**
6009  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
6010  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
6011  * @persistent_group: Whether to create a persistent group
6012  * @freq: Frequency for the group or 0 to indicate no hardcoding
6013  * @vht_center_freq2: segment_1 center frequency for GO operating in VHT 80P80
6014  * @ht40: Start GO with 40 MHz channel width
6015  * @vht:  Start GO with VHT support
6016  * @vht_chwidth: channel bandwidth for GO operating with VHT support
6017  * Returns: 0 on success, -1 on failure
6018  *
6019  * This function creates a new P2P group with the local end as the Group Owner,
6020  * i.e., without using Group Owner Negotiation.
6021  */
6022 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
6023                        int freq, int vht_center_freq2, int ht40, int vht,
6024                        int max_oper_chwidth)
6025 {
6026         struct p2p_go_neg_results params;
6027
6028         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6029                 return -1;
6030
6031         os_free(wpa_s->global->add_psk);
6032         wpa_s->global->add_psk = NULL;
6033
6034         /* Make sure we are not running find during connection establishment */
6035         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
6036         wpas_p2p_stop_find_oper(wpa_s);
6037
6038         freq = wpas_p2p_select_go_freq(wpa_s, freq);
6039         if (freq < 0)
6040                 return -1;
6041
6042         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6043                                     ht40, vht, max_oper_chwidth, NULL))
6044                 return -1;
6045         if (params.freq &&
6046             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
6047                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
6048                     ieee80211_is_dfs(params.freq)) {
6049                         /*
6050                          * If freq is a DFS channel and DFS is offloaded to the
6051                          * driver, allow P2P GO to use it.
6052                          */
6053                         wpa_printf(MSG_DEBUG,
6054                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
6055                                 __func__, params.freq);
6056                 } else {
6057                         wpa_printf(MSG_DEBUG,
6058                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
6059                                    params.freq);
6060                         return -1;
6061                 }
6062         }
6063         p2p_go_params(wpa_s->global->p2p, &params);
6064         params.persistent_group = persistent_group;
6065
6066         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
6067         if (wpa_s == NULL)
6068                 return -1;
6069         wpas_start_wps_go(wpa_s, &params, 0);
6070
6071         return 0;
6072 }
6073
6074
6075 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
6076                                  struct wpa_ssid *params, int addr_allocated,
6077                                  int freq, int force_scan)
6078 {
6079         struct wpa_ssid *ssid;
6080
6081         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
6082         if (wpa_s == NULL)
6083                 return -1;
6084         if (force_scan)
6085                 os_get_reltime(&wpa_s->scan_min_time);
6086         wpa_s->p2p_last_4way_hs_fail = NULL;
6087
6088         wpa_supplicant_ap_deinit(wpa_s);
6089
6090         ssid = wpa_config_add_network(wpa_s->conf);
6091         if (ssid == NULL)
6092                 return -1;
6093         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
6094         wpa_config_set_network_defaults(ssid);
6095         ssid->temporary = 1;
6096         ssid->proto = WPA_PROTO_RSN;
6097         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
6098         ssid->group_cipher = WPA_CIPHER_CCMP;
6099         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
6100         ssid->ssid = os_malloc(params->ssid_len);
6101         if (ssid->ssid == NULL) {
6102                 wpa_config_remove_network(wpa_s->conf, ssid->id);
6103                 return -1;
6104         }
6105         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
6106         ssid->ssid_len = params->ssid_len;
6107         ssid->p2p_group = 1;
6108         ssid->export_keys = 1;
6109         if (params->psk_set) {
6110                 os_memcpy(ssid->psk, params->psk, 32);
6111                 ssid->psk_set = 1;
6112         }
6113         if (params->passphrase)
6114                 ssid->passphrase = os_strdup(params->passphrase);
6115
6116         wpa_s->show_group_started = 1;
6117         wpa_s->p2p_in_invitation = 1;
6118         wpa_s->p2p_invite_go_freq = freq;
6119         wpa_s->p2p_go_group_formation_completed = 0;
6120         wpa_s->global->p2p_group_formation = wpa_s;
6121
6122         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6123                              NULL);
6124         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6125                                wpas_p2p_group_formation_timeout,
6126                                wpa_s->parent, NULL);
6127         wpa_supplicant_select_network(wpa_s, ssid);
6128
6129         return 0;
6130 }
6131
6132
6133 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
6134                                   struct wpa_ssid *ssid, int addr_allocated,
6135                                   int force_freq, int neg_freq,
6136                                   int vht_center_freq2, int ht40,
6137                                   int vht, int max_oper_chwidth,
6138                                   const struct p2p_channels *channels,
6139                                   int connection_timeout, int force_scan)
6140 {
6141         struct p2p_go_neg_results params;
6142         int go = 0, freq;
6143
6144         if (ssid->disabled != 2 || ssid->ssid == NULL)
6145                 return -1;
6146
6147         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
6148             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
6149                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
6150                            "already running");
6151                 if (go == 0 &&
6152                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6153                                          wpa_s->parent, NULL)) {
6154                         /*
6155                          * This can happen if Invitation Response frame was lost
6156                          * and the peer (GO of a persistent group) tries to
6157                          * invite us again. Reschedule the timeout to avoid
6158                          * terminating the wait for the connection too early
6159                          * since we now know that the peer is still trying to
6160                          * invite us instead of having already started the GO.
6161                          */
6162                         wpa_printf(MSG_DEBUG,
6163                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
6164                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6165                                                wpas_p2p_group_formation_timeout,
6166                                                wpa_s->parent, NULL);
6167                 }
6168                 return 0;
6169         }
6170
6171         os_free(wpa_s->global->add_psk);
6172         wpa_s->global->add_psk = NULL;
6173
6174         /* Make sure we are not running find during connection establishment */
6175         wpas_p2p_stop_find_oper(wpa_s);
6176
6177         wpa_s->p2p_fallback_to_go_neg = 0;
6178
6179         if (ssid->mode == WPAS_MODE_P2P_GO) {
6180                 if (force_freq > 0) {
6181                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
6182                         if (freq < 0)
6183                                 return -1;
6184                 } else {
6185                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
6186                         if (freq < 0 ||
6187                             (freq > 0 && !freq_included(wpa_s, channels, freq)))
6188                                 freq = 0;
6189                 }
6190         } else if (ssid->mode == WPAS_MODE_INFRA) {
6191                 freq = neg_freq;
6192                 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
6193                         struct os_reltime now;
6194                         struct wpa_bss *bss =
6195                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
6196
6197                         os_get_reltime(&now);
6198                         if (bss &&
6199                             !os_reltime_expired(&now, &bss->last_update, 5) &&
6200                             freq_included(wpa_s, channels, bss->freq))
6201                                 freq = bss->freq;
6202                         else
6203                                 freq = 0;
6204                 }
6205
6206                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq,
6207                                              force_scan);
6208         } else {
6209                 return -1;
6210         }
6211
6212         if (wpas_p2p_init_go_params(wpa_s, &params, freq, vht_center_freq2,
6213                                     ht40, vht, max_oper_chwidth, channels))
6214                 return -1;
6215
6216         params.role_go = 1;
6217         params.psk_set = ssid->psk_set;
6218         if (params.psk_set)
6219                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
6220         if (ssid->passphrase) {
6221                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
6222                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
6223                                    "persistent group");
6224                         return -1;
6225                 }
6226                 os_strlcpy(params.passphrase, ssid->passphrase,
6227                            sizeof(params.passphrase));
6228         }
6229         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
6230         params.ssid_len = ssid->ssid_len;
6231         params.persistent_group = 1;
6232
6233         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
6234         if (wpa_s == NULL)
6235                 return -1;
6236
6237         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
6238
6239         wpa_s->p2p_first_connection_timeout = connection_timeout;
6240         wpas_start_wps_go(wpa_s, &params, 0);
6241
6242         return 0;
6243 }
6244
6245
6246 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
6247                                struct wpabuf *proberesp_ies)
6248 {
6249         struct wpa_supplicant *wpa_s = ctx;
6250         if (wpa_s->ap_iface) {
6251                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
6252                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
6253                         wpabuf_free(beacon_ies);
6254                         wpabuf_free(proberesp_ies);
6255                         return;
6256                 }
6257                 if (beacon_ies) {
6258                         wpabuf_free(hapd->p2p_beacon_ie);
6259                         hapd->p2p_beacon_ie = beacon_ies;
6260                 }
6261                 wpabuf_free(hapd->p2p_probe_resp_ie);
6262                 hapd->p2p_probe_resp_ie = proberesp_ies;
6263         } else {
6264                 wpabuf_free(beacon_ies);
6265                 wpabuf_free(proberesp_ies);
6266         }
6267         wpa_supplicant_ap_update_beacon(wpa_s);
6268 }
6269
6270
6271 static void wpas_p2p_idle_update(void *ctx, int idle)
6272 {
6273         struct wpa_supplicant *wpa_s = ctx;
6274         if (!wpa_s->ap_iface)
6275                 return;
6276         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
6277         if (idle) {
6278                 if (wpa_s->global->p2p_fail_on_wps_complete &&
6279                     wpa_s->p2p_in_provisioning) {
6280                         wpas_p2p_grpform_fail_after_wps(wpa_s);
6281                         return;
6282                 }
6283                 wpas_p2p_set_group_idle_timeout(wpa_s);
6284         } else
6285                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
6286 }
6287
6288
6289 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
6290                                        struct wpa_ssid *ssid)
6291 {
6292         struct p2p_group *group;
6293         struct p2p_group_config *cfg;
6294
6295         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6296                 return NULL;
6297
6298         cfg = os_zalloc(sizeof(*cfg));
6299         if (cfg == NULL)
6300                 return NULL;
6301
6302         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6303                 cfg->persistent_group = 2;
6304         else if (ssid->p2p_persistent_group)
6305                 cfg->persistent_group = 1;
6306         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6307         if (wpa_s->max_stations &&
6308             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6309                 cfg->max_clients = wpa_s->max_stations;
6310         else
6311                 cfg->max_clients = wpa_s->conf->max_num_sta;
6312         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6313         cfg->ssid_len = ssid->ssid_len;
6314         cfg->freq = ssid->frequency;
6315         cfg->cb_ctx = wpa_s;
6316         cfg->ie_update = wpas_p2p_ie_update;
6317         cfg->idle_update = wpas_p2p_idle_update;
6318
6319         group = p2p_group_init(wpa_s->global->p2p, cfg);
6320         if (group == NULL)
6321                 os_free(cfg);
6322         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6323                 p2p_group_notif_formation_done(group);
6324         wpa_s->p2p_group = group;
6325         return group;
6326 }
6327
6328
6329 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6330                           int registrar)
6331 {
6332         struct wpa_ssid *ssid = wpa_s->current_ssid;
6333
6334         if (!wpa_s->p2p_in_provisioning) {
6335                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6336                            "provisioning not in progress");
6337                 return;
6338         }
6339
6340         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6341                 u8 go_dev_addr[ETH_ALEN];
6342                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6343                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6344                                           ssid->ssid_len);
6345                 /* Clear any stored provisioning info */
6346                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6347         }
6348
6349         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6350                              NULL);
6351         wpa_s->p2p_go_group_formation_completed = 1;
6352         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6353                 /*
6354                  * Use a separate timeout for initial data connection to
6355                  * complete to allow the group to be removed automatically if
6356                  * something goes wrong in this step before the P2P group idle
6357                  * timeout mechanism is taken into use.
6358                  */
6359                 wpa_dbg(wpa_s, MSG_DEBUG,
6360                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6361                         P2P_MAX_INITIAL_CONN_WAIT);
6362                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6363                                        wpas_p2p_group_formation_timeout,
6364                                        wpa_s->parent, NULL);
6365                 /* Complete group formation on successful data connection. */
6366                 wpa_s->p2p_go_group_formation_completed = 0;
6367         } else if (ssid) {
6368                 /*
6369                  * Use a separate timeout for initial data connection to
6370                  * complete to allow the group to be removed automatically if
6371                  * the client does not complete data connection successfully.
6372                  */
6373                 wpa_dbg(wpa_s, MSG_DEBUG,
6374                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6375                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6376                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6377                                        wpas_p2p_group_formation_timeout,
6378                                        wpa_s->parent, NULL);
6379                 /*
6380                  * Complete group formation on first successful data connection
6381                  */
6382                 wpa_s->p2p_go_group_formation_completed = 0;
6383         }
6384         if (wpa_s->global->p2p)
6385                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6386         wpas_group_formation_completed(wpa_s, 1, 0);
6387 }
6388
6389
6390 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6391                          struct wps_event_fail *fail)
6392 {
6393         if (!wpa_s->p2p_in_provisioning) {
6394                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6395                            "provisioning not in progress");
6396                 return;
6397         }
6398
6399         if (wpa_s->go_params) {
6400                 p2p_clear_provisioning_info(
6401                         wpa_s->global->p2p,
6402                         wpa_s->go_params->peer_device_addr);
6403         }
6404
6405         wpas_notify_p2p_wps_failed(wpa_s, fail);
6406
6407         if (wpa_s == wpa_s->global->p2p_group_formation) {
6408                 /*
6409                  * Allow some time for the failed WPS negotiation exchange to
6410                  * complete, but remove the group since group formation cannot
6411                  * succeed after provisioning failure.
6412                  */
6413                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6414                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6415                 eloop_deplete_timeout(0, 50000,
6416                                       wpas_p2p_group_formation_timeout,
6417                                       wpa_s->parent, NULL);
6418         }
6419 }
6420
6421
6422 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6423 {
6424         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6425             !wpa_s->p2p_in_provisioning)
6426                 return 0;
6427
6428         wpas_p2p_grpform_fail_after_wps(wpa_s);
6429
6430         return 1;
6431 }
6432
6433
6434 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6435                        const char *config_method,
6436                        enum wpas_p2p_prov_disc_use use,
6437                        struct p2ps_provision *p2ps_prov)
6438 {
6439         u16 config_methods;
6440
6441         wpa_s->global->pending_p2ps_group = 0;
6442         wpa_s->global->pending_p2ps_group_freq = 0;
6443         wpa_s->p2p_fallback_to_go_neg = 0;
6444         wpa_s->pending_pd_use = NORMAL_PD;
6445         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6446                 p2ps_prov->conncap = p2ps_group_capability(
6447                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role,
6448                         &p2ps_prov->force_freq, &p2ps_prov->pref_freq);
6449
6450                 wpa_printf(MSG_DEBUG,
6451                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6452                            __func__, p2ps_prov->conncap,
6453                            p2ps_prov->adv_id, p2ps_prov->conncap,
6454                            p2ps_prov->status, p2ps_prov->info);
6455
6456                 config_methods = 0;
6457         } else if (os_strncmp(config_method, "display", 7) == 0)
6458                 config_methods = WPS_CONFIG_DISPLAY;
6459         else if (os_strncmp(config_method, "keypad", 6) == 0)
6460                 config_methods = WPS_CONFIG_KEYPAD;
6461         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6462                  os_strncmp(config_method, "pushbutton", 10) == 0)
6463                 config_methods = WPS_CONFIG_PUSHBUTTON;
6464         else {
6465                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6466                 os_free(p2ps_prov);
6467                 return -1;
6468         }
6469
6470         if (use == WPAS_P2P_PD_AUTO) {
6471                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6472                 wpa_s->pending_pd_config_methods = config_methods;
6473                 wpa_s->p2p_auto_pd = 1;
6474                 wpa_s->p2p_auto_join = 0;
6475                 wpa_s->pending_pd_before_join = 0;
6476                 wpa_s->auto_pd_scan_retry = 0;
6477                 wpas_p2p_stop_find(wpa_s);
6478                 wpa_s->p2p_join_scan_count = 0;
6479                 os_get_reltime(&wpa_s->p2p_auto_started);
6480                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6481                            wpa_s->p2p_auto_started.sec,
6482                            wpa_s->p2p_auto_started.usec);
6483                 wpas_p2p_join_scan(wpa_s, NULL);
6484                 return 0;
6485         }
6486
6487         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6488                 os_free(p2ps_prov);
6489                 return -1;
6490         }
6491
6492         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6493                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6494                                  0, 1);
6495 }
6496
6497
6498 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6499                               char *end)
6500 {
6501         return p2p_scan_result_text(ies, ies_len, buf, end);
6502 }
6503
6504
6505 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6506 {
6507         if (!offchannel_pending_action_tx(wpa_s))
6508                 return;
6509
6510         if (wpa_s->p2p_send_action_work) {
6511                 wpas_p2p_free_send_action_work(wpa_s);
6512                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
6513                                      wpa_s, NULL);
6514                 offchannel_send_action_done(wpa_s);
6515         }
6516
6517         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6518                    "operation request");
6519         offchannel_clear_pending_action_tx(wpa_s);
6520 }
6521
6522
6523 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6524                   enum p2p_discovery_type type,
6525                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6526                   const u8 *dev_id, unsigned int search_delay,
6527                   u8 seek_cnt, const char **seek_string, int freq)
6528 {
6529         wpas_p2p_clear_pending_action_tx(wpa_s);
6530         wpa_s->p2p_long_listen = 0;
6531
6532         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6533             wpa_s->p2p_in_provisioning)
6534                 return -1;
6535
6536         wpa_supplicant_cancel_sched_scan(wpa_s);
6537
6538         return p2p_find(wpa_s->global->p2p, timeout, type,
6539                         num_req_dev_types, req_dev_types, dev_id,
6540                         search_delay, seek_cnt, seek_string, freq);
6541 }
6542
6543
6544 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6545                                             struct wpa_scan_results *scan_res)
6546 {
6547         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6548
6549         if (wpa_s->p2p_scan_work) {
6550                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6551                 wpa_s->p2p_scan_work = NULL;
6552                 radio_work_done(work);
6553         }
6554
6555         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6556                 return;
6557
6558         /*
6559          * Indicate that results have been processed so that the P2P module can
6560          * continue pending tasks.
6561          */
6562         p2p_scan_res_handled(wpa_s->global->p2p);
6563 }
6564
6565
6566 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6567 {
6568         wpas_p2p_clear_pending_action_tx(wpa_s);
6569         wpa_s->p2p_long_listen = 0;
6570         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6571         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6572
6573         if (wpa_s->global->p2p)
6574                 p2p_stop_find(wpa_s->global->p2p);
6575
6576         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6577                 wpa_printf(MSG_DEBUG,
6578                            "P2P: Do not consider the scan results after stop_find");
6579                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6580         }
6581 }
6582
6583
6584 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6585 {
6586         wpas_p2p_stop_find_oper(wpa_s);
6587         if (!wpa_s->global->pending_group_iface_for_p2ps)
6588                 wpas_p2p_remove_pending_group_interface(wpa_s);
6589 }
6590
6591
6592 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6593 {
6594         struct wpa_supplicant *wpa_s = eloop_ctx;
6595         wpa_s->p2p_long_listen = 0;
6596 }
6597
6598
6599 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6600 {
6601         int res;
6602
6603         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6604                 return -1;
6605
6606         wpa_supplicant_cancel_sched_scan(wpa_s);
6607         wpas_p2p_clear_pending_action_tx(wpa_s);
6608
6609         if (timeout == 0) {
6610                 /*
6611                  * This is a request for unlimited Listen state. However, at
6612                  * least for now, this is mapped to a Listen state for one
6613                  * hour.
6614                  */
6615                 timeout = 3600;
6616         }
6617         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6618         wpa_s->p2p_long_listen = 0;
6619
6620         /*
6621          * Stop previous find/listen operation to avoid trying to request a new
6622          * remain-on-channel operation while the driver is still running the
6623          * previous one.
6624          */
6625         if (wpa_s->global->p2p)
6626                 p2p_stop_find(wpa_s->global->p2p);
6627
6628         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6629         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6630                 wpa_s->p2p_long_listen = timeout * 1000;
6631                 eloop_register_timeout(timeout, 0,
6632                                        wpas_p2p_long_listen_timeout,
6633                                        wpa_s, NULL);
6634         }
6635
6636         return res;
6637 }
6638
6639
6640 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6641                           u8 *buf, size_t len, int p2p_group)
6642 {
6643         struct wpabuf *p2p_ie;
6644         int ret;
6645
6646         if (wpa_s->global->p2p_disabled)
6647                 return -1;
6648         /*
6649          * Advertize mandatory cross connection capability even on
6650          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6651          */
6652         if (wpa_s->conf->p2p_disabled && p2p_group)
6653                 return -1;
6654         if (wpa_s->global->p2p == NULL)
6655                 return -1;
6656         if (bss == NULL)
6657                 return -1;
6658
6659         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6660         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6661                                p2p_group, p2p_ie);
6662         wpabuf_free(p2p_ie);
6663
6664         return ret;
6665 }
6666
6667
6668 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6669                           const u8 *dst, const u8 *bssid,
6670                           const u8 *ie, size_t ie_len,
6671                           unsigned int rx_freq, int ssi_signal)
6672 {
6673         if (wpa_s->global->p2p_disabled)
6674                 return 0;
6675         if (wpa_s->global->p2p == NULL)
6676                 return 0;
6677
6678         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6679                                  ie, ie_len, rx_freq)) {
6680         case P2P_PREQ_NOT_P2P:
6681                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6682                                  ssi_signal);
6683                 /* fall through */
6684         case P2P_PREQ_MALFORMED:
6685         case P2P_PREQ_NOT_LISTEN:
6686         case P2P_PREQ_NOT_PROCESSED:
6687         default: /* make gcc happy */
6688                 return 0;
6689         case P2P_PREQ_PROCESSED:
6690                 return 1;
6691         }
6692 }
6693
6694
6695 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6696                         const u8 *sa, const u8 *bssid,
6697                         u8 category, const u8 *data, size_t len, int freq)
6698 {
6699         if (wpa_s->global->p2p_disabled)
6700                 return;
6701         if (wpa_s->global->p2p == NULL)
6702                 return;
6703
6704         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6705                       freq);
6706 }
6707
6708
6709 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6710 {
6711         if (wpa_s->global->p2p_disabled)
6712                 return;
6713         if (wpa_s->global->p2p == NULL)
6714                 return;
6715
6716         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6717 }
6718
6719
6720 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6721 {
6722         p2p_group_deinit(wpa_s->p2p_group);
6723         wpa_s->p2p_group = NULL;
6724
6725         wpa_s->ap_configured_cb = NULL;
6726         wpa_s->ap_configured_cb_ctx = NULL;
6727         wpa_s->ap_configured_cb_data = NULL;
6728         wpa_s->connect_without_scan = NULL;
6729 }
6730
6731
6732 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6733 {
6734         wpa_s->p2p_long_listen = 0;
6735
6736         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6737                 return -1;
6738
6739         return p2p_reject(wpa_s->global->p2p, addr);
6740 }
6741
6742
6743 /* Invite to reinvoke a persistent group */
6744 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6745                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6746                     int vht_center_freq2, int ht40, int vht, int max_chwidth,
6747                     int pref_freq)
6748 {
6749         enum p2p_invite_role role;
6750         u8 *bssid = NULL;
6751         int force_freq = 0;
6752         int res;
6753         int no_pref_freq_given = pref_freq == 0;
6754         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6755
6756         wpa_s->global->p2p_invite_group = NULL;
6757         if (peer_addr)
6758                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6759         else
6760                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6761
6762         wpa_s->p2p_persistent_go_freq = freq;
6763         wpa_s->p2p_go_ht40 = !!ht40;
6764         wpa_s->p2p_go_vht = !!vht;
6765         wpa_s->p2p_go_max_oper_chwidth = max_chwidth;
6766         wpa_s->p2p_go_vht_center_freq2 = vht_center_freq2;
6767         if (ssid->mode == WPAS_MODE_P2P_GO) {
6768                 role = P2P_INVITE_ROLE_GO;
6769                 if (peer_addr == NULL) {
6770                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6771                                    "address in invitation command");
6772                         return -1;
6773                 }
6774                 if (wpas_p2p_create_iface(wpa_s)) {
6775                         if (wpas_p2p_add_group_interface(wpa_s,
6776                                                          WPA_IF_P2P_GO) < 0) {
6777                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6778                                            "allocate a new interface for the "
6779                                            "group");
6780                                 return -1;
6781                         }
6782                         bssid = wpa_s->pending_interface_addr;
6783                 } else
6784                         bssid = wpa_s->own_addr;
6785         } else {
6786                 role = P2P_INVITE_ROLE_CLIENT;
6787                 peer_addr = ssid->bssid;
6788         }
6789         wpa_s->pending_invite_ssid_id = ssid->id;
6790
6791         size = P2P_MAX_PREF_CHANNELS;
6792         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6793                                    role == P2P_INVITE_ROLE_GO,
6794                                    pref_freq_list, &size);
6795         if (res)
6796                 return res;
6797
6798         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6799                 return -1;
6800
6801         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
6802
6803         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6804             no_pref_freq_given && pref_freq > 0 &&
6805             wpa_s->num_multichan_concurrent > 1 &&
6806             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6807                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6808                            pref_freq);
6809                 pref_freq = 0;
6810         }
6811
6812         /*
6813          * Stop any find/listen operations before invitation and possibly
6814          * connection establishment.
6815          */
6816         wpas_p2p_stop_find_oper(wpa_s);
6817
6818         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6819                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6820                           1, pref_freq, -1);
6821 }
6822
6823
6824 /* Invite to join an active group */
6825 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6826                           const u8 *peer_addr, const u8 *go_dev_addr)
6827 {
6828         struct wpa_global *global = wpa_s->global;
6829         enum p2p_invite_role role;
6830         u8 *bssid = NULL;
6831         struct wpa_ssid *ssid;
6832         int persistent;
6833         int freq = 0, force_freq = 0, pref_freq = 0;
6834         int res;
6835         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6836
6837         wpa_s->p2p_persistent_go_freq = 0;
6838         wpa_s->p2p_go_ht40 = 0;
6839         wpa_s->p2p_go_vht = 0;
6840         wpa_s->p2p_go_vht_center_freq2 = 0;
6841         wpa_s->p2p_go_max_oper_chwidth = 0;
6842
6843         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6844                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6845                         break;
6846         }
6847         if (wpa_s == NULL) {
6848                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6849                 return -1;
6850         }
6851
6852         ssid = wpa_s->current_ssid;
6853         if (ssid == NULL) {
6854                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6855                            "invitation");
6856                 return -1;
6857         }
6858
6859         wpa_s->global->p2p_invite_group = wpa_s;
6860         persistent = ssid->p2p_persistent_group &&
6861                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6862                                         ssid->ssid, ssid->ssid_len);
6863
6864         if (ssid->mode == WPAS_MODE_P2P_GO) {
6865                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6866                 bssid = wpa_s->own_addr;
6867                 if (go_dev_addr == NULL)
6868                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6869                 freq = ssid->frequency;
6870         } else {
6871                 role = P2P_INVITE_ROLE_CLIENT;
6872                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6873                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6874                                    "invite to current group");
6875                         return -1;
6876                 }
6877                 bssid = wpa_s->bssid;
6878                 if (go_dev_addr == NULL &&
6879                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6880                         go_dev_addr = wpa_s->go_dev_addr;
6881                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6882                         (int) wpa_s->assoc_freq;
6883         }
6884         wpa_s->parent->pending_invite_ssid_id = -1;
6885
6886         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6887                 return -1;
6888
6889         size = P2P_MAX_PREF_CHANNELS;
6890         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6891                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
6892                                    pref_freq_list, &size);
6893         if (res)
6894                 return res;
6895         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6896
6897         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6898                           ssid->ssid, ssid->ssid_len, force_freq,
6899                           go_dev_addr, persistent, pref_freq, -1);
6900 }
6901
6902
6903 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6904 {
6905         struct wpa_ssid *ssid = wpa_s->current_ssid;
6906         u8 go_dev_addr[ETH_ALEN];
6907         int network_id = -1;
6908         int persistent;
6909         int freq;
6910         u8 ip[3 * 4];
6911         char ip_addr[100];
6912
6913         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6914                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6915                                      wpa_s->parent, NULL);
6916         }
6917
6918         if (!wpa_s->show_group_started || !ssid)
6919                 return;
6920
6921         wpa_s->show_group_started = 0;
6922         if (!wpa_s->p2p_go_group_formation_completed &&
6923             wpa_s->global->p2p_group_formation == wpa_s) {
6924                 wpa_dbg(wpa_s, MSG_DEBUG,
6925                         "P2P: Marking group formation completed on client on data connection");
6926                 wpa_s->p2p_go_group_formation_completed = 1;
6927                 wpa_s->global->p2p_group_formation = NULL;
6928                 wpa_s->p2p_in_provisioning = 0;
6929                 wpa_s->p2p_in_invitation = 0;
6930         }
6931
6932         os_memset(go_dev_addr, 0, ETH_ALEN);
6933         if (ssid->bssid_set)
6934                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6935         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6936                                                ssid->ssid_len);
6937         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6938
6939         if (wpa_s->global->p2p_group_formation == wpa_s)
6940                 wpa_s->global->p2p_group_formation = NULL;
6941
6942         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6943                 (int) wpa_s->assoc_freq;
6944
6945         ip_addr[0] = '\0';
6946         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6947                 int res;
6948
6949                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6950                                   " ip_addr=%u.%u.%u.%u "
6951                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6952                                   ip[0], ip[1], ip[2], ip[3],
6953                                   ip[4], ip[5], ip[6], ip[7],
6954                                   ip[8], ip[9], ip[10], ip[11]);
6955                 if (os_snprintf_error(sizeof(ip_addr), res))
6956                         ip_addr[0] = '\0';
6957         }
6958
6959         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6960                                ssid->passphrase == NULL && ssid->psk_set ?
6961                                ssid->psk : NULL,
6962                                ssid->passphrase, go_dev_addr, persistent,
6963                                ip_addr);
6964
6965         if (persistent)
6966                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6967                                                              ssid, go_dev_addr);
6968         if (network_id < 0)
6969                 network_id = ssid->id;
6970         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6971 }
6972
6973
6974 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6975                           u32 interval1, u32 duration2, u32 interval2)
6976 {
6977         int ret;
6978
6979         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6980                 return -1;
6981
6982         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6983             wpa_s->current_ssid == NULL ||
6984             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6985                 return -1;
6986
6987         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6988                                wpa_s->own_addr, wpa_s->assoc_freq,
6989                                duration1, interval1, duration2, interval2);
6990         if (ret == 0)
6991                 wpa_s->waiting_presence_resp = 1;
6992
6993         return ret;
6994 }
6995
6996
6997 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6998                         unsigned int interval)
6999 {
7000         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7001                 return -1;
7002
7003         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
7004 }
7005
7006
7007 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
7008 {
7009         if (wpa_s->current_ssid == NULL) {
7010                 /*
7011                  * current_ssid can be cleared when P2P client interface gets
7012                  * disconnected, so assume this interface was used as P2P
7013                  * client.
7014                  */
7015                 return 1;
7016         }
7017         return wpa_s->current_ssid->p2p_group &&
7018                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
7019 }
7020
7021
7022 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
7023 {
7024         struct wpa_supplicant *wpa_s = eloop_ctx;
7025
7026         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
7027                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
7028                            "disabled");
7029                 return;
7030         }
7031
7032         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
7033                    "group");
7034         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
7035 }
7036
7037
7038 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
7039 {
7040         int timeout;
7041
7042         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7043                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7044
7045         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7046                 return;
7047
7048         timeout = wpa_s->conf->p2p_group_idle;
7049         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
7050             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
7051             timeout = P2P_MAX_CLIENT_IDLE;
7052
7053         if (timeout == 0)
7054                 return;
7055
7056         if (timeout < 0) {
7057                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
7058                         timeout = 0; /* special client mode no-timeout */
7059                 else
7060                         return;
7061         }
7062
7063         if (wpa_s->p2p_in_provisioning) {
7064                 /*
7065                  * Use the normal group formation timeout during the
7066                  * provisioning phase to avoid terminating this process too
7067                  * early due to group idle timeout.
7068                  */
7069                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7070                            "during provisioning");
7071                 return;
7072         }
7073
7074         if (wpa_s->show_group_started) {
7075                 /*
7076                  * Use the normal group formation timeout between the end of
7077                  * the provisioning phase and completion of 4-way handshake to
7078                  * avoid terminating this process too early due to group idle
7079                  * timeout.
7080                  */
7081                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
7082                            "while waiting for initial 4-way handshake to "
7083                            "complete");
7084                 return;
7085         }
7086
7087         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
7088                    timeout);
7089         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
7090                                wpa_s, NULL);
7091 }
7092
7093
7094 /* Returns 1 if the interface was removed */
7095 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7096                           u16 reason_code, const u8 *ie, size_t ie_len,
7097                           int locally_generated)
7098 {
7099         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7100                 return 0;
7101
7102         if (!locally_generated)
7103                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7104                                  ie_len);
7105
7106         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
7107             wpa_s->current_ssid &&
7108             wpa_s->current_ssid->p2p_group &&
7109             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
7110                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
7111                            "session is ending");
7112                 if (wpas_p2p_group_delete(wpa_s,
7113                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
7114                     > 0)
7115                         return 1;
7116         }
7117
7118         return 0;
7119 }
7120
7121
7122 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
7123                              u16 reason_code, const u8 *ie, size_t ie_len,
7124                              int locally_generated)
7125 {
7126         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7127                 return;
7128
7129         if (!locally_generated)
7130                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
7131                                    ie_len);
7132 }
7133
7134
7135 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
7136 {
7137         struct p2p_data *p2p = wpa_s->global->p2p;
7138
7139         if (p2p == NULL)
7140                 return;
7141
7142         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
7143                 return;
7144
7145         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
7146                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
7147
7148         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
7149                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
7150
7151         if (wpa_s->wps &&
7152             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
7153                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
7154
7155         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
7156                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
7157
7158         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
7159                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
7160                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
7161                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
7162                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
7163         }
7164
7165         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
7166                 p2p_set_sec_dev_types(p2p,
7167                                       (void *) wpa_s->conf->sec_device_type,
7168                                       wpa_s->conf->num_sec_device_types);
7169
7170         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
7171                 int i;
7172                 p2p_remove_wps_vendor_extensions(p2p);
7173                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
7174                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
7175                                 continue;
7176                         p2p_add_wps_vendor_extension(
7177                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
7178                 }
7179         }
7180
7181         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
7182             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
7183                 char country[3];
7184                 country[0] = wpa_s->conf->country[0];
7185                 country[1] = wpa_s->conf->country[1];
7186                 country[2] = 0x04;
7187                 p2p_set_country(p2p, country);
7188         }
7189
7190         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
7191                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
7192                                      wpa_s->conf->p2p_ssid_postfix ?
7193                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
7194                                      0);
7195         }
7196
7197         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
7198                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
7199
7200         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
7201                 u8 reg_class, channel;
7202                 int ret;
7203                 unsigned int r;
7204                 u8 channel_forced;
7205
7206                 if (wpa_s->conf->p2p_listen_reg_class &&
7207                     wpa_s->conf->p2p_listen_channel) {
7208                         reg_class = wpa_s->conf->p2p_listen_reg_class;
7209                         channel = wpa_s->conf->p2p_listen_channel;
7210                         channel_forced = 1;
7211                 } else {
7212                         reg_class = 81;
7213                         /*
7214                          * Pick one of the social channels randomly as the
7215                          * listen channel.
7216                          */
7217                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7218                                 channel = 1;
7219                         else
7220                                 channel = 1 + (r % 3) * 5;
7221                         channel_forced = 0;
7222                 }
7223                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
7224                                              channel_forced);
7225                 if (ret)
7226                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
7227                                    "failed: %d", ret);
7228         }
7229         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
7230                 u8 op_reg_class, op_channel, cfg_op_channel;
7231                 int ret = 0;
7232                 unsigned int r;
7233                 if (wpa_s->conf->p2p_oper_reg_class &&
7234                     wpa_s->conf->p2p_oper_channel) {
7235                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
7236                         op_channel = wpa_s->conf->p2p_oper_channel;
7237                         cfg_op_channel = 1;
7238                 } else {
7239                         op_reg_class = 81;
7240                         /*
7241                          * Use random operation channel from (1, 6, 11)
7242                          *if no other preference is indicated.
7243                          */
7244                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
7245                                 op_channel = 1;
7246                         else
7247                                 op_channel = 1 + (r % 3) * 5;
7248                         cfg_op_channel = 0;
7249                 }
7250                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
7251                                            cfg_op_channel);
7252                 if (ret)
7253                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
7254                                    "failed: %d", ret);
7255         }
7256
7257         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
7258                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
7259                                       wpa_s->conf->p2p_pref_chan) < 0) {
7260                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
7261                                    "update failed");
7262                 }
7263
7264                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
7265                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
7266                                    "update failed");
7267                 }
7268         }
7269
7270         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
7271                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
7272 }
7273
7274
7275 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
7276                      int duration)
7277 {
7278         if (!wpa_s->ap_iface)
7279                 return -1;
7280         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
7281                                    duration);
7282 }
7283
7284
7285 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
7286 {
7287         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7288                 return -1;
7289
7290         wpa_s->global->cross_connection = enabled;
7291         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
7292
7293         if (!enabled) {
7294                 struct wpa_supplicant *iface;
7295
7296                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7297                 {
7298                         if (iface->cross_connect_enabled == 0)
7299                                 continue;
7300
7301                         iface->cross_connect_enabled = 0;
7302                         iface->cross_connect_in_use = 0;
7303                         wpa_msg_global(iface->parent, MSG_INFO,
7304                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7305                                        iface->ifname,
7306                                        iface->cross_connect_uplink);
7307                 }
7308         }
7309
7310         return 0;
7311 }
7312
7313
7314 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
7315 {
7316         struct wpa_supplicant *iface;
7317
7318         if (!uplink->global->cross_connection)
7319                 return;
7320
7321         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7322                 if (!iface->cross_connect_enabled)
7323                         continue;
7324                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7325                     0)
7326                         continue;
7327                 if (iface->ap_iface == NULL)
7328                         continue;
7329                 if (iface->cross_connect_in_use)
7330                         continue;
7331
7332                 iface->cross_connect_in_use = 1;
7333                 wpa_msg_global(iface->parent, MSG_INFO,
7334                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7335                                iface->ifname, iface->cross_connect_uplink);
7336         }
7337 }
7338
7339
7340 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7341 {
7342         struct wpa_supplicant *iface;
7343
7344         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7345                 if (!iface->cross_connect_enabled)
7346                         continue;
7347                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7348                     0)
7349                         continue;
7350                 if (!iface->cross_connect_in_use)
7351                         continue;
7352
7353                 wpa_msg_global(iface->parent, MSG_INFO,
7354                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7355                                iface->ifname, iface->cross_connect_uplink);
7356                 iface->cross_connect_in_use = 0;
7357         }
7358 }
7359
7360
7361 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7362 {
7363         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7364             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7365             wpa_s->cross_connect_disallowed)
7366                 wpas_p2p_disable_cross_connect(wpa_s);
7367         else
7368                 wpas_p2p_enable_cross_connect(wpa_s);
7369         if (!wpa_s->ap_iface &&
7370             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7371                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7372 }
7373
7374
7375 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7376 {
7377         wpas_p2p_disable_cross_connect(wpa_s);
7378         if (!wpa_s->ap_iface &&
7379             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7380                                          wpa_s, NULL))
7381                 wpas_p2p_set_group_idle_timeout(wpa_s);
7382 }
7383
7384
7385 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7386 {
7387         struct wpa_supplicant *iface;
7388
7389         if (!wpa_s->global->cross_connection)
7390                 return;
7391
7392         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7393                 if (iface == wpa_s)
7394                         continue;
7395                 if (iface->drv_flags &
7396                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7397                         continue;
7398                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7399                     iface != wpa_s->parent)
7400                         continue;
7401
7402                 wpa_s->cross_connect_enabled = 1;
7403                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7404                            sizeof(wpa_s->cross_connect_uplink));
7405                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7406                            "%s to %s whenever uplink is available",
7407                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7408
7409                 if (iface->ap_iface || iface->current_ssid == NULL ||
7410                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7411                     iface->cross_connect_disallowed ||
7412                     iface->wpa_state != WPA_COMPLETED)
7413                         break;
7414
7415                 wpa_s->cross_connect_in_use = 1;
7416                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7417                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7418                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7419                 break;
7420         }
7421 }
7422
7423
7424 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7425 {
7426         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7427             !wpa_s->p2p_in_provisioning)
7428                 return 0; /* not P2P client operation */
7429
7430         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7431                    "session overlap");
7432         if (wpa_s != wpa_s->parent)
7433                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
7434         wpas_p2p_group_formation_failed(wpa_s, 0);
7435         return 1;
7436 }
7437
7438
7439 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7440 {
7441         struct wpa_supplicant *wpa_s = eloop_ctx;
7442         wpas_p2p_notif_pbc_overlap(wpa_s);
7443 }
7444
7445
7446 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7447                                   enum wpas_p2p_channel_update_trig trig)
7448 {
7449         struct p2p_channels chan, cli_chan;
7450         struct wpa_used_freq_data *freqs = NULL;
7451         unsigned int num = wpa_s->num_multichan_concurrent;
7452
7453         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7454                 return;
7455
7456         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7457         if (!freqs)
7458                 return;
7459
7460         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7461
7462         os_memset(&chan, 0, sizeof(chan));
7463         os_memset(&cli_chan, 0, sizeof(cli_chan));
7464         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7465                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7466                            "channel list");
7467                 return;
7468         }
7469
7470         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7471
7472         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7473
7474         /*
7475          * The used frequencies map changed, so it is possible that a GO is
7476          * using a channel that is no longer valid for P2P use. It is also
7477          * possible that due to policy consideration, it would be preferable to
7478          * move it to a frequency already used by other station interfaces.
7479          */
7480         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7481
7482         os_free(freqs);
7483 }
7484
7485
7486 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7487                                      struct wpa_scan_results *scan_res)
7488 {
7489         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7490 }
7491
7492
7493 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7494 {
7495         struct wpa_global *global = wpa_s->global;
7496         int found = 0;
7497         const u8 *peer;
7498
7499         if (global->p2p == NULL)
7500                 return -1;
7501
7502         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7503
7504         if (wpa_s->pending_interface_name[0] &&
7505             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7506                 found = 1;
7507
7508         peer = p2p_get_go_neg_peer(global->p2p);
7509         if (peer) {
7510                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7511                            MACSTR, MAC2STR(peer));
7512                 p2p_unauthorize(global->p2p, peer);
7513                 found = 1;
7514         }
7515
7516         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7517                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7518                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7519                 found = 1;
7520         }
7521
7522         if (wpa_s->pending_pd_before_join) {
7523                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7524                 wpa_s->pending_pd_before_join = 0;
7525                 found = 1;
7526         }
7527
7528         wpas_p2p_stop_find(wpa_s);
7529
7530         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7531                 if (wpa_s == global->p2p_group_formation &&
7532                     (wpa_s->p2p_in_provisioning ||
7533                      wpa_s->parent->pending_interface_type ==
7534                      WPA_IF_P2P_CLIENT)) {
7535                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7536                                    "formation found - cancelling",
7537                                    wpa_s->ifname);
7538                         found = 1;
7539                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7540                                              wpa_s->parent, NULL);
7541                         if (wpa_s->p2p_in_provisioning) {
7542                                 wpas_group_formation_completed(wpa_s, 0, 0);
7543                                 break;
7544                         }
7545                         wpas_p2p_group_delete(wpa_s,
7546                                               P2P_GROUP_REMOVAL_REQUESTED);
7547                         break;
7548                 } else if (wpa_s->p2p_in_invitation) {
7549                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7550                                    wpa_s->ifname);
7551                         found = 1;
7552                         wpas_p2p_group_formation_failed(wpa_s, 0);
7553                         break;
7554                 }
7555         }
7556
7557         if (!found) {
7558                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7559                 return -1;
7560         }
7561
7562         return 0;
7563 }
7564
7565
7566 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7567 {
7568         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7569                 return;
7570
7571         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7572                    "being available anymore");
7573         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7574 }
7575
7576
7577 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7578                                    int freq_24, int freq_5, int freq_overall)
7579 {
7580         struct p2p_data *p2p = wpa_s->global->p2p;
7581         if (p2p == NULL)
7582                 return;
7583         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7584 }
7585
7586
7587 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7588 {
7589         u8 peer[ETH_ALEN];
7590         struct p2p_data *p2p = wpa_s->global->p2p;
7591
7592         if (p2p == NULL)
7593                 return -1;
7594
7595         if (hwaddr_aton(addr, peer))
7596                 return -1;
7597
7598         return p2p_unauthorize(p2p, peer);
7599 }
7600
7601
7602 /**
7603  * wpas_p2p_disconnect - Disconnect from a P2P Group
7604  * @wpa_s: Pointer to wpa_supplicant data
7605  * Returns: 0 on success, -1 on failure
7606  *
7607  * This can be used to disconnect from a group in which the local end is a P2P
7608  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7609  * virtual network interface was created for this group, that interface will be
7610  * removed. Otherwise, only the configured P2P group network will be removed
7611  * from the interface.
7612  */
7613 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7614 {
7615
7616         if (wpa_s == NULL)
7617                 return -1;
7618
7619         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7620                 -1 : 0;
7621 }
7622
7623
7624 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7625 {
7626         int ret;
7627
7628         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7629                 return 0;
7630
7631         ret = p2p_in_progress(wpa_s->global->p2p);
7632         if (ret == 0) {
7633                 /*
7634                  * Check whether there is an ongoing WPS provisioning step (or
7635                  * other parts of group formation) on another interface since
7636                  * p2p_in_progress() does not report this to avoid issues for
7637                  * scans during such provisioning step.
7638                  */
7639                 if (wpa_s->global->p2p_group_formation &&
7640                     wpa_s->global->p2p_group_formation != wpa_s) {
7641                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7642                                 "in group formation",
7643                                 wpa_s->global->p2p_group_formation->ifname);
7644                         ret = 1;
7645                 }
7646         }
7647
7648         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7649                 struct os_reltime now;
7650                 os_get_reltime(&now);
7651                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7652                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7653                         /* Wait for the first client has expired */
7654                         wpa_s->global->p2p_go_wait_client.sec = 0;
7655                 } else {
7656                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7657                         ret = 1;
7658                 }
7659         }
7660
7661         return ret;
7662 }
7663
7664
7665 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7666                               struct wpa_ssid *ssid)
7667 {
7668         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7669             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7670                                  wpa_s->parent, NULL) > 0) {
7671                 /**
7672                  * Remove the network by scheduling the group formation
7673                  * timeout to happen immediately. The teardown code
7674                  * needs to be scheduled to run asynch later so that we
7675                  * don't delete data from under ourselves unexpectedly.
7676                  * Calling wpas_p2p_group_formation_timeout directly
7677                  * causes a series of crashes in WPS failure scenarios.
7678                  */
7679                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7680                            "P2P group network getting removed");
7681                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7682                                        wpa_s->parent, NULL);
7683         }
7684 }
7685
7686
7687 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7688                                           const u8 *addr, const u8 *ssid,
7689                                           size_t ssid_len)
7690 {
7691         struct wpa_ssid *s;
7692         size_t i;
7693
7694         for (s = wpa_s->conf->ssid; s; s = s->next) {
7695                 if (s->disabled != 2)
7696                         continue;
7697                 if (ssid &&
7698                     (ssid_len != s->ssid_len ||
7699                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7700                         continue;
7701                 if (addr == NULL) {
7702                         if (s->mode == WPAS_MODE_P2P_GO)
7703                                 return s;
7704                         continue;
7705                 }
7706                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7707                         return s; /* peer is GO in the persistent group */
7708                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7709                         continue;
7710                 for (i = 0; i < s->num_p2p_clients; i++) {
7711                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7712                                       addr, ETH_ALEN) == 0)
7713                                 return s; /* peer is P2P client in persistent
7714                                            * group */
7715                 }
7716         }
7717
7718         return NULL;
7719 }
7720
7721
7722 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7723                                        const u8 *addr)
7724 {
7725         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7726                                  wpa_s->parent, NULL) > 0) {
7727                 /*
7728                  * This can happen if WPS provisioning step is not terminated
7729                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7730                  * peer was able to connect, there is no need to time out group
7731                  * formation after this, though. In addition, this is used with
7732                  * the initial connection wait on the GO as a separate formation
7733                  * timeout and as such, expected to be hit after the initial WPS
7734                  * provisioning step.
7735                  */
7736                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7737
7738                 if (!wpa_s->p2p_go_group_formation_completed &&
7739                     !wpa_s->group_formation_reported) {
7740                         /*
7741                          * GO has not yet notified group formation success since
7742                          * the WPS step was not completed cleanly. Do that
7743                          * notification now since the P2P Client was able to
7744                          * connect and as such, must have received the
7745                          * credential from the WPS step.
7746                          */
7747                         if (wpa_s->global->p2p)
7748                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7749                         wpas_group_formation_completed(wpa_s, 1, 0);
7750                 }
7751         }
7752         if (!wpa_s->p2p_go_group_formation_completed) {
7753                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7754                 wpa_s->p2p_go_group_formation_completed = 1;
7755                 wpa_s->global->p2p_group_formation = NULL;
7756                 wpa_s->p2p_in_provisioning = 0;
7757                 wpa_s->p2p_in_invitation = 0;
7758         }
7759         wpa_s->global->p2p_go_wait_client.sec = 0;
7760         if (addr == NULL)
7761                 return;
7762         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7763 }
7764
7765
7766 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7767                                        int group_added)
7768 {
7769         struct wpa_supplicant *group = wpa_s;
7770         int ret = 0;
7771
7772         if (wpa_s->global->p2p_group_formation)
7773                 group = wpa_s->global->p2p_group_formation;
7774         wpa_s = wpa_s->global->p2p_init_wpa_s;
7775         offchannel_send_action_done(wpa_s);
7776         if (group_added)
7777                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7778         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7779         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7780                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7781                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7782                          wpa_s->p2p_go_vht_center_freq2,
7783                          wpa_s->p2p_persistent_id,
7784                          wpa_s->p2p_pd_before_go_neg,
7785                          wpa_s->p2p_go_ht40,
7786                          wpa_s->p2p_go_vht,
7787                          wpa_s->p2p_go_max_oper_chwidth, NULL, 0);
7788         return ret;
7789 }
7790
7791
7792 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7793 {
7794         int res;
7795
7796         if (!wpa_s->p2p_fallback_to_go_neg ||
7797             wpa_s->p2p_in_provisioning <= 5)
7798                 return 0;
7799
7800         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7801                 return 0; /* peer operating as a GO */
7802
7803         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7804                 "fallback to GO Negotiation");
7805         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7806                        "reason=GO-not-found");
7807         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7808
7809         return res == 1 ? 2 : 1;
7810 }
7811
7812
7813 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7814 {
7815         struct wpa_supplicant *ifs;
7816
7817         if (wpa_s->wpa_state > WPA_SCANNING) {
7818                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7819                         "concurrent operation",
7820                         wpa_s->conf->p2p_search_delay);
7821                 return wpa_s->conf->p2p_search_delay;
7822         }
7823
7824         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7825                          radio_list) {
7826                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7827                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7828                                 "delay due to concurrent operation on "
7829                                 "interface %s",
7830                                 wpa_s->conf->p2p_search_delay,
7831                                 ifs->ifname);
7832                         return wpa_s->conf->p2p_search_delay;
7833                 }
7834         }
7835
7836         return 0;
7837 }
7838
7839
7840 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7841                                      struct wpa_ssid *s, const u8 *addr,
7842                                      int iface_addr)
7843 {
7844         struct psk_list_entry *psk, *tmp;
7845         int changed = 0;
7846
7847         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7848                               list) {
7849                 if ((iface_addr && !psk->p2p &&
7850                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7851                     (!iface_addr && psk->p2p &&
7852                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7853                         wpa_dbg(wpa_s, MSG_DEBUG,
7854                                 "P2P: Remove persistent group PSK list entry for "
7855                                 MACSTR " p2p=%u",
7856                                 MAC2STR(psk->addr), psk->p2p);
7857                         dl_list_del(&psk->list);
7858                         os_free(psk);
7859                         changed++;
7860                 }
7861         }
7862
7863         return changed;
7864 }
7865
7866
7867 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7868                          const u8 *p2p_dev_addr,
7869                          const u8 *psk, size_t psk_len)
7870 {
7871         struct wpa_ssid *ssid = wpa_s->current_ssid;
7872         struct wpa_ssid *persistent;
7873         struct psk_list_entry *p, *last;
7874
7875         if (psk_len != sizeof(p->psk))
7876                 return;
7877
7878         if (p2p_dev_addr) {
7879                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7880                         " p2p_dev_addr=" MACSTR,
7881                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7882                 if (is_zero_ether_addr(p2p_dev_addr))
7883                         p2p_dev_addr = NULL;
7884         } else {
7885                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7886                         MAC2STR(mac_addr));
7887         }
7888
7889         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7890                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7891                 /* To be added to persistent group once created */
7892                 if (wpa_s->global->add_psk == NULL) {
7893                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7894                         if (wpa_s->global->add_psk == NULL)
7895                                 return;
7896                 }
7897                 p = wpa_s->global->add_psk;
7898                 if (p2p_dev_addr) {
7899                         p->p2p = 1;
7900                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7901                 } else {
7902                         p->p2p = 0;
7903                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7904                 }
7905                 os_memcpy(p->psk, psk, psk_len);
7906                 return;
7907         }
7908
7909         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7910                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7911                 return;
7912         }
7913
7914         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7915                                              ssid->ssid_len);
7916         if (!persistent) {
7917                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7918                 return;
7919         }
7920
7921         p = os_zalloc(sizeof(*p));
7922         if (p == NULL)
7923                 return;
7924         if (p2p_dev_addr) {
7925                 p->p2p = 1;
7926                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7927         } else {
7928                 p->p2p = 0;
7929                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7930         }
7931         os_memcpy(p->psk, psk, psk_len);
7932
7933         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7934             (last = dl_list_last(&persistent->psk_list,
7935                                  struct psk_list_entry, list))) {
7936                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7937                         MACSTR " (p2p=%u) to make room for a new one",
7938                         MAC2STR(last->addr), last->p2p);
7939                 dl_list_del(&last->list);
7940                 os_free(last);
7941         }
7942
7943         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7944                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7945                                   p2p_dev_addr == NULL);
7946         if (p2p_dev_addr) {
7947                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7948                         MACSTR, MAC2STR(p2p_dev_addr));
7949         } else {
7950                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7951                         MAC2STR(mac_addr));
7952         }
7953         dl_list_add(&persistent->psk_list, &p->list);
7954
7955         if (wpa_s->parent->conf->update_config &&
7956             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7957                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7958 }
7959
7960
7961 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7962                                 struct wpa_ssid *s, const u8 *addr,
7963                                 int iface_addr)
7964 {
7965         int res;
7966
7967         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7968         if (res > 0 && wpa_s->conf->update_config &&
7969             wpa_config_write(wpa_s->confname, wpa_s->conf))
7970                 wpa_dbg(wpa_s, MSG_DEBUG,
7971                         "P2P: Failed to update configuration");
7972 }
7973
7974
7975 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7976                                       const u8 *peer, int iface_addr)
7977 {
7978         struct hostapd_data *hapd;
7979         struct hostapd_wpa_psk *psk, *prev, *rem;
7980         struct sta_info *sta;
7981
7982         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7983             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7984                 return;
7985
7986         /* Remove per-station PSK entry */
7987         hapd = wpa_s->ap_iface->bss[0];
7988         prev = NULL;
7989         psk = hapd->conf->ssid.wpa_psk;
7990         while (psk) {
7991                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7992                     (!iface_addr &&
7993                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7994                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7995                                 MACSTR " iface_addr=%d",
7996                                 MAC2STR(peer), iface_addr);
7997                         if (prev)
7998                                 prev->next = psk->next;
7999                         else
8000                                 hapd->conf->ssid.wpa_psk = psk->next;
8001                         rem = psk;
8002                         psk = psk->next;
8003                         os_free(rem);
8004                 } else {
8005                         prev = psk;
8006                         psk = psk->next;
8007                 }
8008         }
8009
8010         /* Disconnect from group */
8011         if (iface_addr)
8012                 sta = ap_get_sta(hapd, peer);
8013         else
8014                 sta = ap_get_sta_p2p(hapd, peer);
8015         if (sta) {
8016                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
8017                         " (iface_addr=%d) from group",
8018                         MAC2STR(peer), iface_addr);
8019                 hostapd_drv_sta_deauth(hapd, sta->addr,
8020                                        WLAN_REASON_DEAUTH_LEAVING);
8021                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
8022         }
8023 }
8024
8025
8026 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
8027                             int iface_addr)
8028 {
8029         struct wpa_ssid *s;
8030         struct wpa_supplicant *w;
8031         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
8032
8033         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
8034
8035         /* Remove from any persistent group */
8036         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
8037                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
8038                         continue;
8039                 if (!iface_addr)
8040                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
8041                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
8042         }
8043
8044         /* Remove from any operating group */
8045         for (w = wpa_s->global->ifaces; w; w = w->next)
8046                 wpas_p2p_remove_client_go(w, peer, iface_addr);
8047 }
8048
8049
8050 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
8051 {
8052         struct wpa_supplicant *wpa_s = eloop_ctx;
8053         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
8054 }
8055
8056
8057 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
8058 {
8059         struct wpa_supplicant *wpa_s = eloop_ctx;
8060
8061         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
8062         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
8063 }
8064
8065
8066 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
8067                                         struct wpa_ssid *ssid)
8068 {
8069         struct wpa_supplicant *iface;
8070
8071         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8072                 if (!iface->current_ssid ||
8073                     iface->current_ssid->frequency == freq ||
8074                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
8075                      !iface->current_ssid->p2p_group))
8076                         continue;
8077
8078                 /* Remove the connection with least priority */
8079                 if (!wpas_is_p2p_prioritized(iface)) {
8080                         /* STA connection has priority over existing
8081                          * P2P connection, so remove the interface. */
8082                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
8083                         eloop_register_timeout(0, 0,
8084                                                wpas_p2p_group_freq_conflict,
8085                                                iface, NULL);
8086                         /* If connection in progress is P2P connection, do not
8087                          * proceed for the connection. */
8088                         if (wpa_s == iface)
8089                                 return -1;
8090                         else
8091                                 return 0;
8092                 } else {
8093                         /* P2P connection has priority, disable the STA network
8094                          */
8095                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
8096                                                        ssid);
8097                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
8098                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
8099                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
8100                                   ETH_ALEN);
8101                         /* If P2P connection is in progress, continue
8102                          * connecting...*/
8103                         if (wpa_s == iface)
8104                                 return 0;
8105                         else
8106                                 return -1;
8107                 }
8108         }
8109
8110         return 0;
8111 }
8112
8113
8114 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
8115 {
8116         struct wpa_ssid *ssid = wpa_s->current_ssid;
8117
8118         if (ssid == NULL || !ssid->p2p_group)
8119                 return 0;
8120
8121         if (wpa_s->p2p_last_4way_hs_fail &&
8122             wpa_s->p2p_last_4way_hs_fail == ssid) {
8123                 u8 go_dev_addr[ETH_ALEN];
8124                 struct wpa_ssid *persistent;
8125
8126                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
8127                                               ssid->ssid,
8128                                               ssid->ssid_len) <= 0) {
8129                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
8130                         goto disconnect;
8131                 }
8132
8133                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
8134                         MACSTR, MAC2STR(go_dev_addr));
8135                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
8136                                                      ssid->ssid,
8137                                                      ssid->ssid_len);
8138                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
8139                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
8140                         goto disconnect;
8141                 }
8142                 wpa_msg_global(wpa_s->parent, MSG_INFO,
8143                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
8144                                persistent->id);
8145         disconnect:
8146                 wpa_s->p2p_last_4way_hs_fail = NULL;
8147                 /*
8148                  * Remove the group from a timeout to avoid issues with caller
8149                  * continuing to use the interface if this is on a P2P group
8150                  * interface.
8151                  */
8152                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
8153                                        wpa_s, NULL);
8154                 return 1;
8155         }
8156
8157         wpa_s->p2p_last_4way_hs_fail = ssid;
8158         return 0;
8159 }
8160
8161
8162 #ifdef CONFIG_WPS_NFC
8163
8164 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
8165                                              struct wpabuf *p2p)
8166 {
8167         struct wpabuf *ret;
8168         size_t wsc_len;
8169
8170         if (p2p == NULL) {
8171                 wpabuf_free(wsc);
8172                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
8173                 return NULL;
8174         }
8175
8176         wsc_len = wsc ? wpabuf_len(wsc) : 0;
8177         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
8178         if (ret == NULL) {
8179                 wpabuf_free(wsc);
8180                 wpabuf_free(p2p);
8181                 return NULL;
8182         }
8183
8184         wpabuf_put_be16(ret, wsc_len);
8185         if (wsc)
8186                 wpabuf_put_buf(ret, wsc);
8187         wpabuf_put_be16(ret, wpabuf_len(p2p));
8188         wpabuf_put_buf(ret, p2p);
8189
8190         wpabuf_free(wsc);
8191         wpabuf_free(p2p);
8192         wpa_hexdump_buf(MSG_DEBUG,
8193                         "P2P: Generated NFC connection handover message", ret);
8194
8195         if (ndef && ret) {
8196                 struct wpabuf *tmp;
8197                 tmp = ndef_build_p2p(ret);
8198                 wpabuf_free(ret);
8199                 if (tmp == NULL) {
8200                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
8201                         return NULL;
8202                 }
8203                 ret = tmp;
8204         }
8205
8206         return ret;
8207 }
8208
8209
8210 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
8211                              struct wpa_ssid **ssid, u8 *go_dev_addr)
8212 {
8213         struct wpa_supplicant *iface;
8214
8215         if (go_dev_addr)
8216                 os_memset(go_dev_addr, 0, ETH_ALEN);
8217         if (ssid)
8218                 *ssid = NULL;
8219         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8220                 if (iface->wpa_state < WPA_ASSOCIATING ||
8221                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
8222                     !iface->current_ssid->p2p_group ||
8223                     iface->current_ssid->mode != WPAS_MODE_INFRA)
8224                         continue;
8225                 if (ssid)
8226                         *ssid = iface->current_ssid;
8227                 if (go_dev_addr)
8228                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
8229                 return iface->assoc_freq;
8230         }
8231         return 0;
8232 }
8233
8234
8235 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
8236                                           int ndef)
8237 {
8238         struct wpabuf *wsc, *p2p;
8239         struct wpa_ssid *ssid;
8240         u8 go_dev_addr[ETH_ALEN];
8241         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8242
8243         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
8244                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
8245                 return NULL;
8246         }
8247
8248         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8249             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8250                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
8251                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
8252                 return NULL;
8253         }
8254
8255         if (cli_freq == 0) {
8256                 wsc = wps_build_nfc_handover_req_p2p(
8257                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
8258         } else
8259                 wsc = NULL;
8260         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
8261                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8262                                          ssid ? ssid->ssid_len : 0);
8263
8264         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8265 }
8266
8267
8268 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
8269                                           int ndef, int tag)
8270 {
8271         struct wpabuf *wsc, *p2p;
8272         struct wpa_ssid *ssid;
8273         u8 go_dev_addr[ETH_ALEN];
8274         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
8275
8276         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8277                 return NULL;
8278
8279         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8280             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8281                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8282                 return NULL;
8283
8284         if (cli_freq == 0) {
8285                 wsc = wps_build_nfc_handover_sel_p2p(
8286                         wpa_s->parent->wps,
8287                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
8288                         DEV_PW_NFC_CONNECTION_HANDOVER,
8289                         wpa_s->conf->wps_nfc_dh_pubkey,
8290                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
8291         } else
8292                 wsc = NULL;
8293         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
8294                                          go_dev_addr, ssid ? ssid->ssid : NULL,
8295                                          ssid ? ssid->ssid_len : 0);
8296
8297         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
8298 }
8299
8300
8301 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
8302                                    struct p2p_nfc_params *params)
8303 {
8304         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
8305                    "connection handover (freq=%d)",
8306                    params->go_freq);
8307
8308         if (params->go_freq && params->go_ssid_len) {
8309                 wpa_s->p2p_wps_method = WPS_NFC;
8310                 wpa_s->pending_join_wps_method = WPS_NFC;
8311                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
8312                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
8313                           ETH_ALEN);
8314                 return wpas_p2p_join_start(wpa_s, params->go_freq,
8315                                            params->go_ssid,
8316                                            params->go_ssid_len);
8317         }
8318
8319         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8320                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
8321                                 params->go_freq, wpa_s->p2p_go_vht_center_freq2,
8322                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8323                                 params->go_ssid_len ? params->go_ssid : NULL,
8324                                 params->go_ssid_len);
8325 }
8326
8327
8328 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8329                                   struct p2p_nfc_params *params, int tag)
8330 {
8331         int res, persistent;
8332         struct wpa_ssid *ssid;
8333
8334         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8335                    "connection handover");
8336         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8337                 ssid = wpa_s->current_ssid;
8338                 if (ssid == NULL)
8339                         continue;
8340                 if (ssid->mode != WPAS_MODE_P2P_GO)
8341                         continue;
8342                 if (wpa_s->ap_iface == NULL)
8343                         continue;
8344                 break;
8345         }
8346         if (wpa_s == NULL) {
8347                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8348                 return -1;
8349         }
8350
8351         if (wpa_s->parent->p2p_oob_dev_pw_id !=
8352             DEV_PW_NFC_CONNECTION_HANDOVER &&
8353             !wpa_s->parent->p2p_oob_dev_pw) {
8354                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8355                 return -1;
8356         }
8357         res = wpas_ap_wps_add_nfc_pw(
8358                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
8359                 wpa_s->parent->p2p_oob_dev_pw,
8360                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
8361                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
8362         if (res)
8363                 return res;
8364
8365         if (!tag) {
8366                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8367                 return 0;
8368         }
8369
8370         if (!params->peer ||
8371             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8372                 return 0;
8373
8374         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8375                    " to join", MAC2STR(params->peer->p2p_device_addr));
8376
8377         wpa_s->global->p2p_invite_group = wpa_s;
8378         persistent = ssid->p2p_persistent_group &&
8379                 wpas_p2p_get_persistent(wpa_s->parent,
8380                                         params->peer->p2p_device_addr,
8381                                         ssid->ssid, ssid->ssid_len);
8382         wpa_s->parent->pending_invite_ssid_id = -1;
8383
8384         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8385                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8386                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8387                           wpa_s->global->p2p_dev_addr, persistent, 0,
8388                           wpa_s->parent->p2p_oob_dev_pw_id);
8389 }
8390
8391
8392 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8393                                     struct p2p_nfc_params *params,
8394                                     int forced_freq)
8395 {
8396         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8397                    "connection handover");
8398         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8399                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8400                                 forced_freq, wpa_s->p2p_go_vht_center_freq2,
8401                                 -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8402                                 NULL, 0);
8403 }
8404
8405
8406 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8407                                     struct p2p_nfc_params *params,
8408                                     int forced_freq)
8409 {
8410         int res;
8411
8412         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8413                    "connection handover");
8414         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8415                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8416                                forced_freq, wpa_s->p2p_go_vht_center_freq2,
8417                                -1, 0, 1, 1, wpa_s->p2p_go_max_oper_chwidth,
8418                                NULL, 0);
8419         if (res)
8420                 return res;
8421
8422         res = wpas_p2p_listen(wpa_s, 60);
8423         if (res) {
8424                 p2p_unauthorize(wpa_s->global->p2p,
8425                                 params->peer->p2p_device_addr);
8426         }
8427
8428         return res;
8429 }
8430
8431
8432 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8433                                             const struct wpabuf *data,
8434                                             int sel, int tag, int forced_freq)
8435 {
8436         const u8 *pos, *end;
8437         u16 len, id;
8438         struct p2p_nfc_params params;
8439         int res;
8440
8441         os_memset(&params, 0, sizeof(params));
8442         params.sel = sel;
8443
8444         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8445
8446         pos = wpabuf_head(data);
8447         end = pos + wpabuf_len(data);
8448
8449         if (end - pos < 2) {
8450                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8451                            "attributes");
8452                 return -1;
8453         }
8454         len = WPA_GET_BE16(pos);
8455         pos += 2;
8456         if (len > end - pos) {
8457                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8458                            "attributes");
8459                 return -1;
8460         }
8461         params.wsc_attr = pos;
8462         params.wsc_len = len;
8463         pos += len;
8464
8465         if (end - pos < 2) {
8466                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8467                            "attributes");
8468                 return -1;
8469         }
8470         len = WPA_GET_BE16(pos);
8471         pos += 2;
8472         if (len > end - pos) {
8473                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8474                            "attributes");
8475                 return -1;
8476         }
8477         params.p2p_attr = pos;
8478         params.p2p_len = len;
8479         pos += len;
8480
8481         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8482                     params.wsc_attr, params.wsc_len);
8483         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8484                     params.p2p_attr, params.p2p_len);
8485         if (pos < end) {
8486                 wpa_hexdump(MSG_DEBUG,
8487                             "P2P: Ignored extra data after P2P attributes",
8488                             pos, end - pos);
8489         }
8490
8491         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8492         if (res)
8493                 return res;
8494
8495         if (params.next_step == NO_ACTION)
8496                 return 0;
8497
8498         if (params.next_step == BOTH_GO) {
8499                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8500                         MAC2STR(params.peer->p2p_device_addr));
8501                 return 0;
8502         }
8503
8504         if (params.next_step == PEER_CLIENT) {
8505                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8506                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8507                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8508                                 " ssid=\"%s\"",
8509                                 MAC2STR(params.peer->p2p_device_addr),
8510                                 params.go_freq,
8511                                 MAC2STR(params.go_dev_addr),
8512                                 wpa_ssid_txt(params.go_ssid,
8513                                              params.go_ssid_len));
8514                 } else {
8515                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8516                                 "peer=" MACSTR " freq=%d",
8517                                 MAC2STR(params.peer->p2p_device_addr),
8518                                 params.go_freq);
8519                 }
8520                 return 0;
8521         }
8522
8523         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8524                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8525                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8526                 return 0;
8527         }
8528
8529         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8530         wpa_s->p2p_oob_dev_pw = NULL;
8531
8532         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8533                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8534                            "received");
8535                 return -1;
8536         }
8537
8538         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8539         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8540         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8541                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8542         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8543                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8544         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8545
8546         if (tag) {
8547                 if (id < 0x10) {
8548                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8549                                    "peer OOB Device Password Id %u", id);
8550                         return -1;
8551                 }
8552                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8553                            "Device Password Id %u", id);
8554                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8555                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8556                                 params.oob_dev_pw_len -
8557                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
8558                 wpa_s->p2p_oob_dev_pw_id = id;
8559                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8560                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8561                         params.oob_dev_pw_len -
8562                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8563                 if (wpa_s->p2p_oob_dev_pw == NULL)
8564                         return -1;
8565
8566                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8567                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8568                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8569                         return -1;
8570         } else {
8571                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8572                            "without Device Password");
8573                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8574         }
8575
8576         switch (params.next_step) {
8577         case NO_ACTION:
8578         case BOTH_GO:
8579         case PEER_CLIENT:
8580                 /* already covered above */
8581                 return 0;
8582         case JOIN_GROUP:
8583                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8584         case AUTH_JOIN:
8585                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8586         case INIT_GO_NEG:
8587                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8588         case RESP_GO_NEG:
8589                 /* TODO: use own OOB Dev Pw */
8590                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8591         }
8592
8593         return -1;
8594 }
8595
8596
8597 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8598                              const struct wpabuf *data, int forced_freq)
8599 {
8600         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8601                 return -1;
8602
8603         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8604 }
8605
8606
8607 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8608                                  const struct wpabuf *req,
8609                                  const struct wpabuf *sel, int forced_freq)
8610 {
8611         struct wpabuf *tmp;
8612         int ret;
8613
8614         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8615                 return -1;
8616
8617         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8618
8619         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8620                           wpabuf_head(req), wpabuf_len(req));
8621         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8622                           wpabuf_head(sel), wpabuf_len(sel));
8623         if (forced_freq)
8624                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8625         tmp = ndef_parse_p2p(init ? sel : req);
8626         if (tmp == NULL) {
8627                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8628                 return -1;
8629         }
8630
8631         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8632                                                forced_freq);
8633         wpabuf_free(tmp);
8634
8635         return ret;
8636 }
8637
8638
8639 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8640 {
8641         const u8 *if_addr;
8642         int go_intent = wpa_s->conf->p2p_go_intent;
8643         struct wpa_supplicant *iface;
8644
8645         if (wpa_s->global->p2p == NULL)
8646                 return -1;
8647
8648         if (!enabled) {
8649                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8650                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8651                 {
8652                         if (!iface->ap_iface)
8653                                 continue;
8654                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8655                 }
8656                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8657                                                  0, NULL);
8658                 if (wpa_s->p2p_nfc_tag_enabled)
8659                         wpas_p2p_remove_pending_group_interface(wpa_s);
8660                 wpa_s->p2p_nfc_tag_enabled = 0;
8661                 return 0;
8662         }
8663
8664         if (wpa_s->global->p2p_disabled)
8665                 return -1;
8666
8667         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8668             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8669             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8670             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8671                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8672                            "to allow static handover cases");
8673                 return -1;
8674         }
8675
8676         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8677
8678         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8679         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8680         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8681         if (wpa_s->p2p_oob_dev_pw == NULL)
8682                 return -1;
8683         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8684
8685         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8686             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8687                 /*
8688                  * P2P Group Interface present and the command came on group
8689                  * interface, so enable the token for the current interface.
8690                  */
8691                 wpa_s->create_p2p_iface = 0;
8692         } else {
8693                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8694         }
8695
8696         if (wpa_s->create_p2p_iface) {
8697                 enum wpa_driver_if_type iftype;
8698                 /* Prepare to add a new interface for the group */
8699                 iftype = WPA_IF_P2P_GROUP;
8700                 if (go_intent == 15)
8701                         iftype = WPA_IF_P2P_GO;
8702                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8703                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8704                                    "interface for the group");
8705                         return -1;
8706                 }
8707
8708                 if_addr = wpa_s->pending_interface_addr;
8709         } else
8710                 if_addr = wpa_s->own_addr;
8711
8712         wpa_s->p2p_nfc_tag_enabled = enabled;
8713
8714         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8715                 struct hostapd_data *hapd;
8716                 if (iface->ap_iface == NULL)
8717                         continue;
8718                 hapd = iface->ap_iface->bss[0];
8719                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8720                 hapd->conf->wps_nfc_dh_pubkey =
8721                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8722                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8723                 hapd->conf->wps_nfc_dh_privkey =
8724                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8725                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8726                 hapd->conf->wps_nfc_dev_pw =
8727                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8728                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8729
8730                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8731                         wpa_dbg(iface, MSG_DEBUG,
8732                                 "P2P: Failed to enable NFC Tag for GO");
8733                 }
8734         }
8735         p2p_set_authorized_oob_dev_pw_id(
8736                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8737                 if_addr);
8738
8739         return 0;
8740 }
8741
8742 #endif /* CONFIG_WPS_NFC */
8743
8744
8745 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8746                                              struct wpa_used_freq_data *freqs,
8747                                              unsigned int num)
8748 {
8749         u8 curr_chan, cand, chan;
8750         unsigned int i;
8751
8752         /*
8753          * If possible, optimize the Listen channel to be a channel that is
8754          * already used by one of the other interfaces.
8755          */
8756         if (!wpa_s->conf->p2p_optimize_listen_chan)
8757                 return;
8758
8759         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8760                 return;
8761
8762         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8763         for (i = 0, cand = 0; i < num; i++) {
8764                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8765                 if (curr_chan == chan) {
8766                         cand = 0;
8767                         break;
8768                 }
8769
8770                 if (chan == 1 || chan == 6 || chan == 11)
8771                         cand = chan;
8772         }
8773
8774         if (cand) {
8775                 wpa_dbg(wpa_s, MSG_DEBUG,
8776                         "P2P: Update Listen channel to %u based on operating channel",
8777                         cand);
8778                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8779         }
8780 }
8781
8782
8783 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8784 {
8785         struct hostapd_config *conf;
8786         struct p2p_go_neg_results params;
8787         struct csa_settings csa_settings;
8788         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8789         int old_freq = current_ssid->frequency;
8790         int ret;
8791
8792         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8793                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8794                 return -1;
8795         }
8796
8797         /*
8798          * TODO: This function may not always work correctly. For example,
8799          * when we have a running GO and a BSS on a DFS channel.
8800          */
8801         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8802                 wpa_dbg(wpa_s, MSG_DEBUG,
8803                         "P2P CSA: Failed to select new frequency for GO");
8804                 return -1;
8805         }
8806
8807         if (current_ssid->frequency == params.freq) {
8808                 wpa_dbg(wpa_s, MSG_DEBUG,
8809                         "P2P CSA: Selected same frequency - not moving GO");
8810                 return 0;
8811         }
8812
8813         conf = hostapd_config_defaults();
8814         if (!conf) {
8815                 wpa_dbg(wpa_s, MSG_DEBUG,
8816                         "P2P CSA: Failed to allocate default config");
8817                 return -1;
8818         }
8819
8820         current_ssid->frequency = params.freq;
8821         if (wpa_supplicant_conf_ap_ht(wpa_s, current_ssid, conf)) {
8822                 wpa_dbg(wpa_s, MSG_DEBUG,
8823                         "P2P CSA: Failed to create new GO config");
8824                 ret = -1;
8825                 goto out;
8826         }
8827
8828         if (conf->hw_mode != wpa_s->ap_iface->current_mode->mode) {
8829                 wpa_dbg(wpa_s, MSG_DEBUG,
8830                         "P2P CSA: CSA to a different band is not supported");
8831                 ret = -1;
8832                 goto out;
8833         }
8834
8835         os_memset(&csa_settings, 0, sizeof(csa_settings));
8836         csa_settings.cs_count = P2P_GO_CSA_COUNT;
8837         csa_settings.block_tx = P2P_GO_CSA_BLOCK_TX;
8838         csa_settings.freq_params.freq = params.freq;
8839         csa_settings.freq_params.sec_channel_offset = conf->secondary_channel;
8840         csa_settings.freq_params.ht_enabled = conf->ieee80211n;
8841         csa_settings.freq_params.bandwidth = conf->secondary_channel ? 40 : 20;
8842
8843         if (conf->ieee80211ac) {
8844                 int freq1 = 0, freq2 = 0;
8845                 u8 chan, opclass;
8846
8847                 if (ieee80211_freq_to_channel_ext(params.freq,
8848                                                   conf->secondary_channel,
8849                                                   conf->vht_oper_chwidth,
8850                                                   &opclass, &chan) ==
8851                     NUM_HOSTAPD_MODES) {
8852                         wpa_printf(MSG_ERROR, "P2P CSA: Bad freq");
8853                         ret = -1;
8854                         goto out;
8855                 }
8856
8857                 if (conf->vht_oper_centr_freq_seg0_idx)
8858                         freq1 = ieee80211_chan_to_freq(
8859                                 NULL, opclass,
8860                                 conf->vht_oper_centr_freq_seg0_idx);
8861
8862                 if (conf->vht_oper_centr_freq_seg1_idx)
8863                         freq2 = ieee80211_chan_to_freq(
8864                                 NULL, opclass,
8865                                 conf->vht_oper_centr_freq_seg1_idx);
8866
8867                 if (freq1 < 0 || freq2 < 0) {
8868                         wpa_dbg(wpa_s, MSG_DEBUG,
8869                                 "P2P CSA: Selected invalid VHT center freqs");
8870                         ret = -1;
8871                         goto out;
8872                 }
8873
8874                 csa_settings.freq_params.vht_enabled = conf->ieee80211ac;
8875                 csa_settings.freq_params.center_freq1 = freq1;
8876                 csa_settings.freq_params.center_freq2 = freq2;
8877
8878                 switch (conf->vht_oper_chwidth) {
8879                 case VHT_CHANWIDTH_80MHZ:
8880                 case VHT_CHANWIDTH_80P80MHZ:
8881                         csa_settings.freq_params.bandwidth = 80;
8882                         break;
8883                 case VHT_CHANWIDTH_160MHZ:
8884                         csa_settings.freq_params.bandwidth = 160;
8885                         break;
8886                 }
8887         }
8888
8889         ret = ap_switch_channel(wpa_s, &csa_settings);
8890 out:
8891         current_ssid->frequency = old_freq;
8892         hostapd_config_free(conf);
8893         return ret;
8894 }
8895
8896
8897 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8898 {
8899         struct p2p_go_neg_results params;
8900         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8901
8902         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8903
8904         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8905                 current_ssid->frequency);
8906
8907         /* Stop the AP functionality */
8908         /* TODO: Should do this in a way that does not indicated to possible
8909          * P2P Clients in the group that the group is terminated. */
8910         wpa_supplicant_ap_deinit(wpa_s);
8911
8912         /* Reselect the GO frequency */
8913         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, 0, 0, NULL)) {
8914                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8915                 wpas_p2p_group_delete(wpa_s,
8916                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8917                 return;
8918         }
8919         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8920                 params.freq);
8921
8922         if (params.freq &&
8923             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8924                 wpa_printf(MSG_DEBUG,
8925                            "P2P: Selected freq (%u MHz) is not valid for P2P",
8926                            params.freq);
8927                 wpas_p2p_group_delete(wpa_s,
8928                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8929                 return;
8930         }
8931
8932         /* Update the frequency */
8933         current_ssid->frequency = params.freq;
8934         wpa_s->connect_without_scan = current_ssid;
8935         wpa_s->reassociate = 1;
8936         wpa_s->disconnected = 0;
8937         wpa_supplicant_req_scan(wpa_s, 0, 0);
8938 }
8939
8940
8941 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8942 {
8943         struct wpa_supplicant *wpa_s = eloop_ctx;
8944
8945         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8946                 return;
8947
8948         wpas_p2p_go_update_common_freqs(wpa_s);
8949
8950         /* Do not move GO in the middle of a CSA */
8951         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
8952                 wpa_printf(MSG_DEBUG,
8953                            "P2P: CSA is in progress - not moving GO");
8954                 return;
8955         }
8956
8957         /*
8958          * First, try a channel switch flow. If it is not supported or fails,
8959          * take down the GO and bring it up again.
8960          */
8961         if (wpas_p2p_move_go_csa(wpa_s) < 0)
8962                 wpas_p2p_move_go_no_csa(wpa_s);
8963 }
8964
8965
8966 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
8967 {
8968         struct wpa_supplicant *wpa_s = eloop_ctx;
8969         struct wpa_used_freq_data *freqs = NULL;
8970         unsigned int num = wpa_s->num_multichan_concurrent;
8971
8972         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8973         if (!freqs)
8974                 return;
8975
8976         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8977
8978         /* Previous attempt to move a GO was not possible -- try again. */
8979         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
8980                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
8981
8982         os_free(freqs);
8983 }
8984
8985
8986 /*
8987  * Consider moving a GO from its currently used frequency:
8988  * 1. It is possible that due to regulatory consideration the frequency
8989  *    can no longer be used and there is a need to evacuate the GO.
8990  * 2. It is possible that due to MCC considerations, it would be preferable
8991  *    to move the GO to a channel that is currently used by some other
8992  *    station interface.
8993  *
8994  * In case a frequency that became invalid is once again valid, cancel a
8995  * previously initiated GO frequency change.
8996  */
8997 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
8998                                             struct wpa_used_freq_data *freqs,
8999                                             unsigned int num)
9000 {
9001         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
9002         unsigned int timeout;
9003         int freq;
9004
9005         wpas_p2p_go_update_common_freqs(wpa_s);
9006
9007         freq = wpa_s->current_ssid->frequency;
9008         for (i = 0, invalid_freq = 0; i < num; i++) {
9009                 if (freqs[i].freq == freq) {
9010                         flags = freqs[i].flags;
9011
9012                         /* The channel is invalid, must change it */
9013                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
9014                                 wpa_dbg(wpa_s, MSG_DEBUG,
9015                                         "P2P: Freq=%d MHz no longer valid for GO",
9016                                         freq);
9017                                 invalid_freq = 1;
9018                         }
9019                 } else if (freqs[i].flags == 0) {
9020                         /* Freq is not used by any other station interface */
9021                         continue;
9022                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
9023                                                freqs[i].freq)) {
9024                         /* Freq is not valid for P2P use cases */
9025                         continue;
9026                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9027                            P2P_GO_FREQ_MOVE_SCM) {
9028                         policy_move = 1;
9029                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
9030                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
9031                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9032                         policy_move = 1;
9033                 } else if ((wpa_s->conf->p2p_go_freq_change_policy ==
9034                             P2P_GO_FREQ_MOVE_SCM_ECSA) &&
9035                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
9036                         if (!p2p_get_group_num_members(wpa_s->p2p_group)) {
9037                                 policy_move = 1;
9038                         } else if ((wpa_s->drv_flags &
9039                                     WPA_DRIVER_FLAGS_AP_CSA) &&
9040                                    wpas_p2p_go_clients_support_ecsa(wpa_s)) {
9041                                 u8 chan;
9042
9043                                 /*
9044                                  * We do not support CSA between bands, so move
9045                                  * GO only within the same band.
9046                                  */
9047                                 if (wpa_s->ap_iface->current_mode->mode ==
9048                                     ieee80211_freq_to_chan(freqs[i].freq,
9049                                                            &chan))
9050                                         policy_move = 1;
9051                         }
9052                 }
9053         }
9054
9055         wpa_dbg(wpa_s, MSG_DEBUG,
9056                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
9057                 invalid_freq, policy_move, flags);
9058
9059         /*
9060          * The channel is valid, or we are going to have a policy move, so
9061          * cancel timeout.
9062          */
9063         if (!invalid_freq || policy_move) {
9064                 wpa_dbg(wpa_s, MSG_DEBUG,
9065                         "P2P: Cancel a GO move from freq=%d MHz", freq);
9066                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9067
9068                 if (wpas_p2p_in_progress(wpa_s)) {
9069                         wpa_dbg(wpa_s, MSG_DEBUG,
9070                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
9071                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
9072                                              wpa_s, NULL);
9073                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9074                                                wpas_p2p_reconsider_moving_go,
9075                                                wpa_s, NULL);
9076                         return;
9077                 }
9078         }
9079
9080         if (!invalid_freq && (!policy_move || flags != 0)) {
9081                 wpa_dbg(wpa_s, MSG_DEBUG,
9082                         "P2P: Not initiating a GO frequency change");
9083                 return;
9084         }
9085
9086         /*
9087          * Do not consider moving GO if it is in the middle of a CSA. When the
9088          * CSA is finished this flow should be retriggered.
9089          */
9090         if (hostapd_csa_in_progress(wpa_s->ap_iface)) {
9091                 wpa_dbg(wpa_s, MSG_DEBUG,
9092                         "P2P: Not initiating a GO frequency change - CSA is in progress");
9093                 return;
9094         }
9095
9096         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
9097                 timeout = P2P_GO_FREQ_CHANGE_TIME;
9098         else
9099                 timeout = 0;
9100
9101         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
9102                 freq, timeout);
9103         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
9104         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
9105 }
9106
9107
9108 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
9109                                          struct wpa_used_freq_data *freqs,
9110                                          unsigned int num,
9111                                          enum wpas_p2p_channel_update_trig trig)
9112 {
9113         struct wpa_supplicant *ifs;
9114
9115         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
9116                              NULL);
9117
9118         /*
9119          * Travers all the radio interfaces, and for each GO interface, check
9120          * if there is a need to move the GO from the frequency it is using,
9121          * or in case the frequency is valid again, cancel the evacuation flow.
9122          */
9123         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
9124                          radio_list) {
9125                 if (ifs->current_ssid == NULL ||
9126                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
9127                         continue;
9128
9129                 /*
9130                  * The GO was just started or completed channel switch, no need
9131                  * to move it.
9132                  */
9133                 if (wpa_s == ifs &&
9134                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
9135                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
9136                         wpa_dbg(wpa_s, MSG_DEBUG,
9137                                 "P2P: GO move - schedule re-consideration");
9138                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
9139                                                wpas_p2p_reconsider_moving_go,
9140                                                wpa_s, NULL);
9141                         continue;
9142                 }
9143
9144                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
9145         }
9146 }
9147
9148
9149 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
9150 {
9151         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
9152                 return;
9153
9154         wpas_p2p_update_channel_list(wpa_s,
9155                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
9156 }
9157
9158
9159 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
9160 {
9161         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
9162                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
9163                         "the management interface is being removed");
9164                 wpas_p2p_deinit_global(wpa_s->global);
9165         }
9166 }
9167
9168
9169 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
9170 {
9171         if (wpa_s->ap_iface->bss)
9172                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
9173         wpas_p2p_group_deinit(wpa_s);
9174 }