wpa_supplicant/p2p_supplicant.c

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  52  * it is currently using, but is no longer valid for P2P use cases.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  57  * Defines CSA parameters which are used when GO evacuates the no longer valid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