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  52  * it is currently using, but is no longer valid for P2P use cases.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 #ifndef P2P_MAX_CLIENT_IDLE
  57 /*
  58  * How many seconds to try to reconnect to the GO when connection in P2P client
  59  * role has been lost.
  60  */
  61 #define P2P_MAX_CLIENT_IDLE 10
  62 #endif /* P2P_MAX_CLIENT_IDLE */
  63
  64 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  65 /*
  66  * How many seconds to wait for initial 4-way handshake to get completed after
  67  * WPS provisioning step or after the re-invocation of a persistent group on a
  68  * P2P Client.
  69  */
  70 #define P2P_MAX_INITIAL_CONN_WAIT 10
  71 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  72
  73 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
  74 /*
  75  * How many seconds to wait for initial 4-way handshake to get completed after
  76  * WPS provisioning step on the GO. This controls the extra time the P2P
  77  * operation is considered to be in progress (e.g., to delay other scans) after
  78  * WPS provisioning has been completed on the GO during group formation.
  79  */
  80 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
  81 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
  82
  83 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
  84 /*
  85  * How many seconds to wait for initial 4-way handshake to get completed after
  86  * re-invocation of a persistent group on the GO when the client is expected
  87  * to connect automatically (no user interaction).
  88  */
  89 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
  90 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
  91
  92 #define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"
  93
  94 /*
  95  * How many seconds to wait to re-attempt to move GOs, in case previous attempt
  96  * was not possible.
  97  */
  98 #define P2P_RECONSIDER_GO_MOVE_DELAY 30
  99
 100 enum p2p_group_removal_reason {
 101         P2P_GROUP_REMOVAL_UNKNOWN,
 102         P2P_GROUP_REMOVAL_SILENT,
 103         P2P_GROUP_REMOVAL_FORMATION_FAILED,
 104         P2P_GROUP_REMOVAL_REQUESTED,
 105         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
 106         P2P_GROUP_REMOVAL_UNAVAILABLE,
 107         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
 108         P2P_GROUP_REMOVAL_PSK_FAILURE,
 109         P2P_GROUP_REMOVAL_FREQ_CONFLICT,
 110         P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL
 111 };
 112
 113
 114 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
 115 static struct wpa_supplicant *
 116 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
 117                          int go);
 118 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
 119                                const u8 *ssid, size_t ssid_len);
 120 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 121                                    const u8 *ssid, size_t ssid_len);
 122 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 123 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 124                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 125                          int auto_join, int freq,
 126                          const u8 *ssid, size_t ssid_len);
 127 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 128 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 129 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 130 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 131 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 132                                              void *timeout_ctx);
 133 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 134 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 135                                        int group_added);
 136 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 137 static void wpas_stop_listen(void *ctx);
 138 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
 139 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s);
 140 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
 141                                         enum wpa_driver_if_type type);
 142 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
 143                                             int already_deleted);
 144 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
 145                                              struct wpa_used_freq_data *freqs,
 146                                              unsigned int num);
 147 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx);
 148 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq);
 149 static void
 150 wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
 151                              struct wpa_used_freq_data *freqs, unsigned int num,
 152                              enum wpas_p2p_channel_update_trig trig);
 153 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx);
 154
 155
 156 /*
 157  * Get the number of concurrent channels that the HW can operate, but that are
 158  * currently not in use by any of the wpa_supplicant interfaces.
 159  */
 160 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 161 {
 162         int *freqs;
 163         int num, unused;
 164
 165         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 166         if (!freqs)
 167                 return -1;
 168
 169         num = get_shared_radio_freqs(wpa_s, freqs,
 170                                      wpa_s->num_multichan_concurrent);
 171         os_free(freqs);
 172
 173         unused = wpa_s->num_multichan_concurrent - num;
 174         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 175         return unused;
 176 }
 177
 178
 179 /*
 180  * Get the frequencies that are currently in use by one or more of the virtual
 181  * interfaces, and that are also valid for P2P operation.
 182  */
 183 static unsigned int
 184 wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 185                           struct wpa_used_freq_data *p2p_freqs,
 186                           unsigned int len)
 187 {
 188         struct wpa_used_freq_data *freqs;
 189         unsigned int num, i, j;
 190
 191         freqs = os_calloc(wpa_s->num_multichan_concurrent,
 192                           sizeof(struct wpa_used_freq_data));
 193         if (!freqs)
 194                 return 0;
 195
 196         num = get_shared_radio_freqs_data(wpa_s, freqs,
 197                                           wpa_s->num_multichan_concurrent);
 198
 199         os_memset(p2p_freqs, 0, sizeof(struct wpa_used_freq_data) * len);
 200
 201         for (i = 0, j = 0; i < num && j < len; i++) {
 202                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
 203                         p2p_freqs[j++] = freqs[i];
 204         }
 205
 206         os_free(freqs);
 207
 208         dump_freq_data(wpa_s, "valid for P2P", p2p_freqs, j);
 209
 210         return j;
 211 }
 212
 213
 214 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 215                                              int freq)
 216 {
 217         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 218                 return;
 219
 220         /* Use the wpa_s used to control the P2P Device operation */
 221         wpa_s = wpa_s->global->p2p_init_wpa_s;
 222
 223         if (wpa_s->conf->p2p_ignore_shared_freq &&
 224             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 225             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 226                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 227                            freq);
 228                 freq = 0;
 229         }
 230         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 231 }
 232
 233
 234 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 235                                       struct wpa_scan_results *scan_res)
 236 {
 237         size_t i;
 238
 239         if (wpa_s->p2p_scan_work) {
 240                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 241                 wpa_s->p2p_scan_work = NULL;
 242                 radio_work_done(work);
 243         }
 244
 245         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 246                 return;
 247
 248         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 249                    (int) scan_res->num);
 250
 251         for (i = 0; i < scan_res->num; i++) {
 252                 struct wpa_scan_res *bss = scan_res->res[i];
 253                 struct os_reltime time_tmp_age, entry_ts;
 254                 const u8 *ies;
 255                 size_t ies_len;
 256
 257                 time_tmp_age.sec = bss->age / 1000;
 258                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 259                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 260
 261                 ies = (const u8 *) (bss + 1);
 262                 ies_len = bss->ie_len;
 263                 if (bss->beacon_ie_len > 0 &&
 264                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 265                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 266                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 267                                    MACSTR, MAC2STR(bss->bssid));
 268                         ies = ies + ies_len;
 269                         ies_len = bss->beacon_ie_len;
 270                 }
 271
 272
 273                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 274                                          bss->freq, &entry_ts, bss->level,
 275                                          ies, ies_len) > 0)
 276                         break;
 277         }
 278
 279         p2p_scan_res_handled(wpa_s->global->p2p);
 280 }
 281
 282
 283 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 284 {
 285         struct wpa_supplicant *wpa_s = work->wpa_s;
 286         struct wpa_driver_scan_params *params = work->ctx;
 287         int ret;
 288
 289         if (deinit) {
 290                 if (!work->started) {
 291                         wpa_scan_free_params(params);
 292                         return;
 293                 }
 294
 295                 wpa_s->p2p_scan_work = NULL;
 296                 return;
 297         }
 298
 299         ret = wpa_drv_scan(wpa_s, params);
 300         wpa_scan_free_params(params);
 301         work->ctx = NULL;
 302         if (ret) {
 303                 radio_work_done(work);
 304                 p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 305                 return;
 306         }
 307
 308         p2p_notify_scan_trigger_status(wpa_s->global->p2p, ret);
 309         os_get_reltime(&wpa_s->scan_trigger_time);
 310         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 311         wpa_s->own_scan_requested = 1;
 312         wpa_s->p2p_scan_work = work;
 313 }
 314
 315
 316 static int wpas_p2p_search_social_channel(struct wpa_supplicant *wpa_s,
 317                                           int freq)
 318 {
 319         if (wpa_s->global->p2p_24ghz_social_channels &&
 320             (freq == 2412 || freq == 2437 || freq == 2462)) {
 321                 /*
 322                  * Search all social channels regardless of whether these have
 323                  * been disabled for P2P operating channel use to avoid missing
 324                  * peers.
 325                  */
 326                 return 1;
 327         }
 328         return p2p_supported_freq(wpa_s->global->p2p, freq);
 329 }
 330
 331
 332 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 333                          unsigned int num_req_dev_types,
 334                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 335 {
 336         struct wpa_supplicant *wpa_s = ctx;
 337         struct wpa_driver_scan_params *params = NULL;
 338         struct wpabuf *wps_ie, *ies;
 339         unsigned int num_channels = 0;
 340         int social_channels_freq[] = { 2412, 2437, 2462, 60480 };
 341         size_t ielen;
 342         u8 *n, i;
 343
 344         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 345                 return -1;
 346
 347         if (wpa_s->p2p_scan_work) {
 348                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 349                 return -1;
 350         }
 351
 352         params = os_zalloc(sizeof(*params));
 353         if (params == NULL)
 354                 return -1;
 355
 356         /* P2P Wildcard SSID */
 357         params->num_ssids = 1;
 358         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 359         if (n == NULL)
 360                 goto fail;
 361         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 362         params->ssids[0].ssid = n;
 363         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 364
 365         wpa_s->wps->dev.p2p = 1;
 366         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 367                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 368                                         num_req_dev_types, req_dev_types);
 369         if (wps_ie == NULL)
 370                 goto fail;
 371
 372         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 373         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 374         if (ies == NULL) {
 375                 wpabuf_free(wps_ie);
 376                 goto fail;
 377         }
 378         wpabuf_put_buf(ies, wps_ie);
 379         wpabuf_free(wps_ie);
 380
 381         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 382
 383         params->p2p_probe = 1;
 384         n = os_malloc(wpabuf_len(ies));
 385         if (n == NULL) {
 386                 wpabuf_free(ies);
 387                 goto fail;
 388         }
 389         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 390         params->extra_ies = n;
 391         params->extra_ies_len = wpabuf_len(ies);
 392         wpabuf_free(ies);
 393
 394         switch (type) {
 395         case P2P_SCAN_SOCIAL:
 396                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 1,
 397                                           sizeof(int));
 398                 if (params->freqs == NULL)
 399                         goto fail;
 400                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 401                         if (wpas_p2p_search_social_channel(
 402                                     wpa_s, social_channels_freq[i]))
 403                                 params->freqs[num_channels++] =
 404                                         social_channels_freq[i];
 405                 }
 406                 params->freqs[num_channels++] = 0;
 407                 break;
 408         case P2P_SCAN_FULL:
 409                 break;
 410         case P2P_SCAN_SPECIFIC:
 411                 params->freqs = os_calloc(2, sizeof(int));
 412                 if (params->freqs == NULL)
 413                         goto fail;
 414                 params->freqs[0] = freq;
 415                 params->freqs[1] = 0;
 416                 break;
 417         case P2P_SCAN_SOCIAL_PLUS_ONE:
 418                 params->freqs = os_calloc(ARRAY_SIZE(social_channels_freq) + 2,
 419                                           sizeof(int));
 420                 if (params->freqs == NULL)
 421                         goto fail;
 422                 for (i = 0; i < ARRAY_SIZE(social_channels_freq); i++) {
 423                         if (wpas_p2p_search_social_channel(
 424                                     wpa_s, social_channels_freq[i]))
 425                                 params->freqs[num_channels++] =
 426                                         social_channels_freq[i];
 427                 }
 428                 if (p2p_supported_freq(wpa_s->global->p2p, freq))
 429                         params->freqs[num_channels++] = freq;
 430                 params->freqs[num_channels++] = 0;
 431                 break;
 432         }
 433
 434         radio_remove_works(wpa_s, "p2p-scan", 0);
 435         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 436                            params) < 0)
 437                 goto fail;
 438         return 0;
 439
 440 fail:
 441         wpa_scan_free_params(params);
 442         return -1;
 443 }
 444
 445
 446 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 447 {
 448         switch (p2p_group_interface) {
 449         case P2P_GROUP_INTERFACE_PENDING:
 450                 return WPA_IF_P2P_GROUP;
 451         case P2P_GROUP_INTERFACE_GO:
 452                 return WPA_IF_P2P_GO;
 453         case P2P_GROUP_INTERFACE_CLIENT:
 454                 return WPA_IF_P2P_CLIENT;
 455         }
 456
 457         return WPA_IF_P2P_GROUP;
 458 }
 459
 460
 461 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 462                                                   const u8 *ssid,
 463                                                   size_t ssid_len, int *go)
 464 {
 465         struct wpa_ssid *s;
 466
 467         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 468                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 469                         if (s->disabled != 0 || !s->p2p_group ||
 470                             s->ssid_len != ssid_len ||
 471                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 472                                 continue;
 473                         if (s->mode == WPAS_MODE_P2P_GO &&
 474                             s != wpa_s->current_ssid)
 475                                 continue;
 476                         if (go)
 477                                 *go = s->mode == WPAS_MODE_P2P_GO;
 478                         return wpa_s;
 479                 }
 480         }
 481
 482         return NULL;
 483 }
 484
 485
 486 static void run_wpas_p2p_disconnect(void *eloop_ctx, void *timeout_ctx)
 487 {
 488         struct wpa_supplicant *wpa_s = eloop_ctx;
 489         wpa_printf(MSG_DEBUG,
 490                    "P2P: Complete previously requested removal of %s",
 491                    wpa_s->ifname);
 492         wpas_p2p_disconnect(wpa_s);
 493 }
 494
 495
 496 static int wpas_p2p_disconnect_safely(struct wpa_supplicant *wpa_s,
 497                                       struct wpa_supplicant *calling_wpa_s)
 498 {
 499         if (calling_wpa_s == wpa_s && wpa_s &&
 500             wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 501                 /*
 502                  * The calling wpa_s instance is going to be removed. Do that
 503                  * from an eloop callback to keep the instance available until
 504                  * the caller has returned. This my be needed, e.g., to provide
 505                  * control interface responses on the per-interface socket.
 506                  */
 507                 if (eloop_register_timeout(0, 0, run_wpas_p2p_disconnect,
 508                                            wpa_s, NULL) < 0)
 509                         return -1;
 510                 return 0;
 511         }
 512
 513         return wpas_p2p_disconnect(wpa_s);
 514 }
 515
 516
 517 /* Determine total number of clients in active groups where we are the GO */
 518 static unsigned int p2p_group_go_member_count(struct wpa_supplicant *wpa_s)
 519 {
 520         unsigned int count = 0;
 521         struct wpa_ssid *s;
 522
 523         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 524                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 525                         wpa_printf(MSG_DEBUG,
 526                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 527                                    wpa_s, s, s->disabled, s->p2p_group,
 528                                    s->mode);
 529                         if (!s->disabled && s->p2p_group &&
 530                             s->mode == WPAS_MODE_P2P_GO) {
 531                                 count += p2p_get_group_num_members(
 532                                         wpa_s->p2p_group);
 533                         }
 534                 }
 535         }
 536
 537         return count;
 538 }
 539
 540
 541 /* Find an interface for a P2P group where we are the GO */
 542 static struct wpa_supplicant *
 543 wpas_p2p_get_go_group(struct wpa_supplicant *wpa_s)
 544 {
 545         struct wpa_supplicant *save = NULL;
 546         struct wpa_ssid *s;
 547
 548         if (!wpa_s)
 549                 return NULL;
 550
 551         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 552                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 553                         if (s->disabled || !s->p2p_group ||
 554                             s->mode != WPAS_MODE_P2P_GO)
 555                                 continue;
 556
 557                         /* Prefer a group with connected clients */
 558                         if (p2p_get_group_num_members(wpa_s->p2p_group))
 559                                 return wpa_s;
 560                         save = wpa_s;
 561                 }
 562         }
 563
 564         /* No group with connected clients, so pick the one without (if any) */
 565         return save;
 566 }
 567
 568
 569 /* Find an active P2P group where we are the GO */
 570 static struct wpa_ssid * wpas_p2p_group_go_ssid(struct wpa_supplicant *wpa_s,
 571                                                 u8 *bssid)
 572 {
 573         struct wpa_ssid *s, *empty = NULL;
 574
 575         if (!wpa_s)
 576                 return 0;
 577
 578         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 579                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 580                         if (s->disabled || !s->p2p_group ||
 581                             s->mode != WPAS_MODE_P2P_GO)
 582                                 continue;
 583
 584                         os_memcpy(bssid, wpa_s->own_addr, ETH_ALEN);
 585                         if (p2p_get_group_num_members(wpa_s->p2p_group))
 586                                 return s;
 587                         empty = s;
 588                 }
 589         }
 590
 591         return empty;
 592 }
 593
 594
 595 /* Find a persistent group where we are the GO */
 596 static struct wpa_ssid *
 597 wpas_p2p_get_persistent_go(struct wpa_supplicant *wpa_s)
 598 {
 599         struct wpa_ssid *s;
 600
 601         for (s = wpa_s->conf->ssid; s; s = s->next) {
 602                 if (s->disabled == 2 && s->mode == WPAS_MODE_P2P_GO)
 603                         return s;
 604         }
 605
 606         return NULL;
 607 }
 608
 609
 610 static u8 p2ps_group_capability(void *ctx, u8 incoming, u8 role)
 611 {
 612         struct wpa_supplicant *wpa_s = ctx, *tmp_wpa_s;
 613         struct wpa_ssid *s;
 614         u8 conncap = P2PS_SETUP_NONE;
 615         unsigned int owned_members = 0;
 616         unsigned int owner = 0;
 617         unsigned int client = 0;
 618         struct wpa_supplicant *go_wpa_s;
 619         struct wpa_ssid *persistent_go;
 620         int p2p_no_group_iface;
 621
 622         wpa_printf(MSG_DEBUG, "P2P: Conncap - in:%d role:%d", incoming, role);
 623
 624         /*
 625          * For non-concurrent capable devices:
 626          * If persistent_go, then no new.
 627          * If GO, then no client.
 628          * If client, then no GO.
 629          */
 630         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
 631         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
 632         p2p_no_group_iface = !wpas_p2p_create_iface(wpa_s);
 633
 634         wpa_printf(MSG_DEBUG, "P2P: GO(iface)=%p persistent(ssid)=%p",
 635                    go_wpa_s, persistent_go);
 636
 637         for (tmp_wpa_s = wpa_s->global->ifaces; tmp_wpa_s;
 638              tmp_wpa_s = tmp_wpa_s->next) {
 639                 for (s = tmp_wpa_s->conf->ssid; s; s = s->next) {
 640                         wpa_printf(MSG_DEBUG,
 641                                    "P2P: sup:%p ssid:%p disabled:%d p2p:%d mode:%d",
 642                                    tmp_wpa_s, s, s->disabled,
 643                                    s->p2p_group, s->mode);
 644                         if (!s->disabled && s->p2p_group) {
 645                                 if (s->mode == WPAS_MODE_P2P_GO) {
 646                                         owned_members +=
 647                                                 p2p_get_group_num_members(
 648                                                         tmp_wpa_s->p2p_group);
 649                                         owner++;
 650                                 } else
 651                                         client++;
 652                         }
 653                 }
 654         }
 655
 656         /* If not concurrent, restrict our choices */
 657         if (p2p_no_group_iface) {
 658                 wpa_printf(MSG_DEBUG, "P2P: p2p_no_group_iface");
 659
 660                 if (client)
 661                         return P2PS_SETUP_NONE;
 662
 663                 if (go_wpa_s) {
 664                         if (role == P2PS_SETUP_CLIENT ||
 665                             incoming == P2PS_SETUP_GROUP_OWNER ||
 666                             p2p_client_limit_reached(go_wpa_s->p2p_group))
 667                                 return P2PS_SETUP_NONE;
 668
 669                         return P2PS_SETUP_GROUP_OWNER;
 670                 }
 671
 672                 if (persistent_go) {
 673                         if (role == P2PS_SETUP_NONE || role == P2PS_SETUP_NEW) {
 674                                 if (!incoming)
 675                                         return P2PS_SETUP_GROUP_OWNER |
 676                                                 P2PS_SETUP_CLIENT;
 677                                 if (incoming == P2PS_SETUP_NEW) {
 678                                         u8 r;
 679
 680                                         if (os_get_random(&r, sizeof(r)) < 0 ||
 681                                             (r & 1))
 682                                                 return P2PS_SETUP_CLIENT;
 683                                         return P2PS_SETUP_GROUP_OWNER;
 684                                 }
 685                         }
 686                 }
 687         }
 688
 689         /* If a required role has been specified, handle it here */
 690         if (role && role != P2PS_SETUP_NEW) {
 691                 switch (incoming) {
 692                 case P2PS_SETUP_NONE:
 693                 case P2PS_SETUP_NEW:
 694                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 695                 case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 696                         conncap = role;
 697                         goto grp_owner;
 698
 699                 case P2PS_SETUP_GROUP_OWNER:
 700                         /*
 701                          * Must be a complimentary role - cannot be a client to
 702                          * more than one peer.
 703                          */
 704                         if (incoming == role || client)
 705                                 return P2PS_SETUP_NONE;
 706
 707                         return P2PS_SETUP_CLIENT;
 708
 709                 case P2PS_SETUP_CLIENT:
 710                         /* Must be a complimentary role */
 711                         if (incoming != role) {
 712                                 conncap = P2PS_SETUP_GROUP_OWNER;
 713                                 goto grp_owner;
 714                         }
 715
 716                 default:
 717                         return P2PS_SETUP_NONE;
 718                 }
 719         }
 720
 721         /*
 722          * For now, we only will support ownership of one group, and being a
 723          * client of one group. Therefore, if we have either an existing GO
 724          * group, or an existing client group, we will not do a new GO
 725          * negotiation, but rather try to re-use the existing groups.
 726          */
 727         switch (incoming) {
 728         case P2PS_SETUP_NONE:
 729         case P2PS_SETUP_NEW:
 730                 if (client)
 731                         conncap = P2PS_SETUP_GROUP_OWNER;
 732                 else if (!owned_members)
 733                         conncap = P2PS_SETUP_NEW;
 734                 else if (incoming == P2PS_SETUP_NONE)
 735                         conncap = P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT;
 736                 else
 737                         conncap = P2PS_SETUP_CLIENT;
 738                 break;
 739
 740         case P2PS_SETUP_CLIENT:
 741                 conncap = P2PS_SETUP_GROUP_OWNER;
 742                 break;
 743
 744         case P2PS_SETUP_GROUP_OWNER:
 745                 if (!client)
 746                         conncap = P2PS_SETUP_CLIENT;
 747                 break;
 748
 749         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_NEW:
 750         case P2PS_SETUP_GROUP_OWNER | P2PS_SETUP_CLIENT:
 751                 if (client)
 752                         conncap = P2PS_SETUP_GROUP_OWNER;
 753                 else {
 754                         u8 r;
 755
 756                         if (os_get_random(&r, sizeof(r)) < 0 ||
 757                             (r & 1))
 758                                 conncap = P2PS_SETUP_CLIENT;
 759                         else
 760                                 conncap = P2PS_SETUP_GROUP_OWNER;
 761                 }
 762                 break;
 763
 764         default:
 765                 return P2PS_SETUP_NONE;
 766         }
 767
 768 grp_owner:
 769         if ((conncap & P2PS_SETUP_GROUP_OWNER) ||
 770             (!incoming && (conncap & P2PS_SETUP_NEW))) {
 771                 if (go_wpa_s && p2p_client_limit_reached(go_wpa_s->p2p_group))
 772                         conncap &= ~P2PS_SETUP_GROUP_OWNER;
 773                 wpa_printf(MSG_DEBUG, "P2P: GOs:%d members:%d conncap:%d",
 774                            owner, owned_members, conncap);
 775
 776                 s = wpas_p2p_get_persistent_go(wpa_s);
 777
 778                 if (!s && !owner && p2p_no_group_iface) {
 779                         p2p_set_intended_addr(wpa_s->global->p2p,
 780                                               wpa_s->own_addr);
 781                 } else if (!s && !owner) {
 782                         if (wpas_p2p_add_group_interface(wpa_s,
 783                                                          WPA_IF_P2P_GO) < 0) {
 784                                 wpa_printf(MSG_ERROR,
 785                                            "P2P: Failed to allocate a new interface for the group");
 786                                 return P2PS_SETUP_NONE;
 787                         }
 788                         wpa_s->global->pending_group_iface_for_p2ps = 1;
 789                         p2p_set_intended_addr(wpa_s->global->p2p,
 790                                               wpa_s->pending_interface_addr);
 791                 }
 792         }
 793
 794         return conncap;
 795 }
 796
 797
 798 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 799                                  enum p2p_group_removal_reason removal_reason)
 800 {
 801         struct wpa_ssid *ssid;
 802         char *gtype;
 803         const char *reason;
 804
 805         ssid = wpa_s->current_ssid;
 806         if (ssid == NULL) {
 807                 /*
 808                  * The current SSID was not known, but there may still be a
 809                  * pending P2P group interface waiting for provisioning or a
 810                  * P2P group that is trying to reconnect.
 811                  */
 812                 ssid = wpa_s->conf->ssid;
 813                 while (ssid) {
 814                         if (ssid->p2p_group && ssid->disabled != 2)
 815                                 break;
 816                         ssid = ssid->next;
 817                 }
 818                 if (ssid == NULL &&
 819                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 820                 {
 821                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 822                                    "not found");
 823                         return -1;
 824                 }
 825         }
 826         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 827                 gtype = "GO";
 828         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 829                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 830                 wpa_s->reassociate = 0;
 831                 wpa_s->disconnected = 1;
 832                 gtype = "client";
 833         } else
 834                 gtype = "GO";
 835
 836         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 837                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 838
 839         if (os_strcmp(gtype, "client") == 0) {
 840                 wpa_supplicant_deauthenticate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 841                 if (eloop_is_timeout_registered(wpas_p2p_psk_failure_removal,
 842                                                 wpa_s, NULL)) {
 843                         wpa_printf(MSG_DEBUG,
 844                                    "P2P: PSK failure removal was scheduled, so use PSK failure as reason for group removal");
 845                         removal_reason = P2P_GROUP_REMOVAL_PSK_FAILURE;
 846                         eloop_cancel_timeout(wpas_p2p_psk_failure_removal,
 847                                              wpa_s, NULL);
 848                 }
 849         }
 850
 851         if (wpa_s->cross_connect_in_use) {
 852                 wpa_s->cross_connect_in_use = 0;
 853                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 854                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 855                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 856         }
 857         switch (removal_reason) {
 858         case P2P_GROUP_REMOVAL_REQUESTED:
 859                 reason = " reason=REQUESTED";
 860                 break;
 861         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 862                 reason = " reason=FORMATION_FAILED";
 863                 break;
 864         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 865                 reason = " reason=IDLE";
 866                 break;
 867         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 868                 reason = " reason=UNAVAILABLE";
 869                 break;
 870         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 871                 reason = " reason=GO_ENDING_SESSION";
 872                 break;
 873         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 874                 reason = " reason=PSK_FAILURE";
 875                 break;
 876         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 877                 reason = " reason=FREQ_CONFLICT";
 878                 break;
 879         default:
 880                 reason = "";
 881                 break;
 882         }
 883         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 884                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 885                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 886                                wpa_s->ifname, gtype, reason);
 887         }
 888
 889         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 890                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 891         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 892                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 893         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 894                                  wpa_s->parent, NULL) > 0) {
 895                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 896                            "timeout");
 897                 wpa_s->p2p_in_provisioning = 0;
 898                 wpas_p2p_group_formation_failed(wpa_s, 1);
 899         }
 900
 901         wpa_s->p2p_in_invitation = 0;
 902         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
 903         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, wpa_s, NULL);
 904
 905         /*
 906          * Make sure wait for the first client does not remain active after the
 907          * group has been removed.
 908          */
 909         wpa_s->global->p2p_go_wait_client.sec = 0;
 910
 911         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 912                 struct wpa_global *global;
 913                 char *ifname;
 914                 enum wpa_driver_if_type type;
 915                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 916                         wpa_s->ifname);
 917                 global = wpa_s->global;
 918                 ifname = os_strdup(wpa_s->ifname);
 919                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 920                 eloop_cancel_timeout(run_wpas_p2p_disconnect, wpa_s, NULL);
 921                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 922                 wpa_s = global->ifaces;
 923                 if (wpa_s && ifname)
 924                         wpa_drv_if_remove(wpa_s, type, ifname);
 925                 os_free(ifname);
 926                 return 1;
 927         }
 928
 929         if (!wpa_s->p2p_go_group_formation_completed) {
 930                 wpa_s->global->p2p_group_formation = NULL;
 931                 wpa_s->p2p_in_provisioning = 0;
 932         }
 933
 934         wpa_s->show_group_started = 0;
 935         os_free(wpa_s->go_params);
 936         wpa_s->go_params = NULL;
 937
 938         os_free(wpa_s->p2p_group_common_freqs);
 939         wpa_s->p2p_group_common_freqs = NULL;
 940         wpa_s->p2p_group_common_freqs_num = 0;
 941
 942         wpa_s->waiting_presence_resp = 0;
 943
 944         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 945         if (ssid && (ssid->p2p_group ||
 946                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 947                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 948                 int id = ssid->id;
 949                 if (ssid == wpa_s->current_ssid) {
 950                         wpa_sm_set_config(wpa_s->wpa, NULL);
 951                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 952                         wpa_s->current_ssid = NULL;
 953                 }
 954                 /*
 955                  * Networks objects created during any P2P activities are not
 956                  * exposed out as they might/will confuse certain non-P2P aware
 957                  * applications since these network objects won't behave like
 958                  * regular ones.
 959                  *
 960                  * Likewise, we don't send out network removed signals for such
 961                  * network objects.
 962                  */
 963                 wpa_config_remove_network(wpa_s->conf, id);
 964                 wpa_supplicant_clear_status(wpa_s);
 965                 wpa_supplicant_cancel_sched_scan(wpa_s);
 966         } else {
 967                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 968                            "found");
 969         }
 970         if (wpa_s->ap_iface)
 971                 wpa_supplicant_ap_deinit(wpa_s);
 972         else
 973                 wpa_drv_deinit_p2p_cli(wpa_s);
 974
 975         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 976
 977         return 0;
 978 }
 979
 980
 981 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 982                                      u8 *go_dev_addr,
 983                                      const u8 *ssid, size_t ssid_len)
 984 {
 985         struct wpa_bss *bss;
 986         const u8 *bssid;
 987         struct wpabuf *p2p;
 988         u8 group_capab;
 989         const u8 *addr;
 990
 991         if (wpa_s->go_params)
 992                 bssid = wpa_s->go_params->peer_interface_addr;
 993         else
 994                 bssid = wpa_s->bssid;
 995
 996         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 997         if (bss == NULL && wpa_s->go_params &&
 998             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
 999                 bss = wpa_bss_get_p2p_dev_addr(
1000                         wpa_s, wpa_s->go_params->peer_device_addr);
1001         if (bss == NULL) {
1002                 u8 iface_addr[ETH_ALEN];
1003                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
1004                                            iface_addr) == 0)
1005                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
1006         }
1007         if (bss == NULL) {
1008                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1009                            "group is persistent - BSS " MACSTR " not found",
1010                            MAC2STR(bssid));
1011                 return 0;
1012         }
1013
1014         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1015         if (p2p == NULL)
1016                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
1017                                                          P2P_IE_VENDOR_TYPE);
1018         if (p2p == NULL) {
1019                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
1020                            "group is persistent - BSS " MACSTR
1021                            " did not include P2P IE", MAC2STR(bssid));
1022                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
1023                             (u8 *) (bss + 1), bss->ie_len);
1024                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
1025                             ((u8 *) bss + 1) + bss->ie_len,
1026                             bss->beacon_ie_len);
1027                 return 0;
1028         }
1029
1030         group_capab = p2p_get_group_capab(p2p);
1031         addr = p2p_get_go_dev_addr(p2p);
1032         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
1033                    "group_capab=0x%x", group_capab);
1034         if (addr) {
1035                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
1036                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
1037                            MAC2STR(addr));
1038         } else
1039                 os_memset(go_dev_addr, 0, ETH_ALEN);
1040         wpabuf_free(p2p);
1041
1042         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
1043                    "go_dev_addr=" MACSTR,
1044                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
1045
1046         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
1047 }
1048
1049
1050 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
1051                                            struct wpa_ssid *ssid,
1052                                            const u8 *go_dev_addr)
1053 {
1054         struct wpa_ssid *s;
1055         int changed = 0;
1056
1057         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
1058                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
1059         for (s = wpa_s->conf->ssid; s; s = s->next) {
1060                 if (s->disabled == 2 &&
1061                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
1062                     s->ssid_len == ssid->ssid_len &&
1063                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
1064                         break;
1065         }
1066
1067         if (s) {
1068                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
1069                            "entry");
1070                 if (ssid->passphrase && !s->passphrase)
1071                         changed = 1;
1072                 else if (ssid->passphrase && s->passphrase &&
1073                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
1074                         changed = 1;
1075         } else {
1076                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
1077                            "entry");
1078                 changed = 1;
1079                 s = wpa_config_add_network(wpa_s->conf);
1080                 if (s == NULL)
1081                         return -1;
1082
1083                 /*
1084                  * Instead of network_added we emit persistent_group_added
1085                  * notification. Also to keep the defense checks in
1086                  * persistent_group obj registration method, we set the
1087                  * relevant flags in s to designate it as a persistent group.
1088                  */
1089                 s->p2p_group = 1;
1090                 s->p2p_persistent_group = 1;
1091                 wpas_notify_persistent_group_added(wpa_s, s);
1092                 wpa_config_set_network_defaults(s);
1093         }
1094
1095         s->p2p_group = 1;
1096         s->p2p_persistent_group = 1;
1097         s->disabled = 2;
1098         s->bssid_set = 1;
1099         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
1100         s->mode = ssid->mode;
1101         s->auth_alg = WPA_AUTH_ALG_OPEN;
1102         s->key_mgmt = WPA_KEY_MGMT_PSK;
1103         s->proto = WPA_PROTO_RSN;
1104         s->pairwise_cipher = WPA_CIPHER_CCMP;
1105         s->export_keys = 1;
1106         if (ssid->passphrase) {
1107                 os_free(s->passphrase);
1108                 s->passphrase = os_strdup(ssid->passphrase);
1109         }
1110         if (ssid->psk_set) {
1111                 s->psk_set = 1;
1112                 os_memcpy(s->psk, ssid->psk, 32);
1113         }
1114         if (s->passphrase && !s->psk_set)
1115                 wpa_config_update_psk(s);
1116         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
1117                 os_free(s->ssid);
1118                 s->ssid = os_malloc(ssid->ssid_len);
1119         }
1120         if (s->ssid) {
1121                 s->ssid_len = ssid->ssid_len;
1122                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
1123         }
1124         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
1125                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
1126                 wpa_s->global->add_psk = NULL;
1127                 changed = 1;
1128         }
1129
1130         if (changed && wpa_s->conf->update_config &&
1131             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
1132                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1133         }
1134
1135         return s->id;
1136 }
1137
1138
1139 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
1140                                                  const u8 *addr)
1141 {
1142         struct wpa_ssid *ssid, *s;
1143         u8 *n;
1144         size_t i;
1145         int found = 0;
1146         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
1147
1148         ssid = wpa_s->current_ssid;
1149         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
1150             !ssid->p2p_persistent_group)
1151                 return;
1152
1153         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
1154                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
1155                         continue;
1156
1157                 if (s->ssid_len == ssid->ssid_len &&
1158                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
1159                         break;
1160         }
1161
1162         if (s == NULL)
1163                 return;
1164
1165         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
1166                 if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN, addr,
1167                               ETH_ALEN) != 0)
1168                         continue;
1169
1170                 if (i == s->num_p2p_clients - 1)
1171                         return; /* already the most recent entry */
1172
1173                 /* move the entry to mark it most recent */
1174                 os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
1175                            s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
1176                            (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
1177                 os_memcpy(s->p2p_client_list +
1178                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN, addr,
1179                           ETH_ALEN);
1180                 os_memset(s->p2p_client_list +
1181                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1182                           0xff, ETH_ALEN);
1183                 found = 1;
1184                 break;
1185         }
1186
1187         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
1188                 n = os_realloc_array(s->p2p_client_list,
1189                                      s->num_p2p_clients + 1, 2 * ETH_ALEN);
1190                 if (n == NULL)
1191                         return;
1192                 os_memcpy(n + s->num_p2p_clients * 2 * ETH_ALEN, addr,
1193                           ETH_ALEN);
1194                 os_memset(n + s->num_p2p_clients * 2 * ETH_ALEN + ETH_ALEN,
1195                           0xff, ETH_ALEN);
1196                 s->p2p_client_list = n;
1197                 s->num_p2p_clients++;
1198         } else if (!found && s->p2p_client_list) {
1199                 /* Not enough room for an additional entry - drop the oldest
1200                  * entry */
1201                 os_memmove(s->p2p_client_list,
1202                            s->p2p_client_list + 2 * ETH_ALEN,
1203                            (s->num_p2p_clients - 1) * 2 * ETH_ALEN);
1204                 os_memcpy(s->p2p_client_list +
1205                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN,
1206                           addr, ETH_ALEN);
1207                 os_memset(s->p2p_client_list +
1208                           (s->num_p2p_clients - 1) * 2 * ETH_ALEN + ETH_ALEN,
1209                           0xff, ETH_ALEN);
1210         }
1211
1212         if (p2p_wpa_s->conf->update_config &&
1213             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
1214                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1215 }
1216
1217
1218 static void wpas_p2p_group_started(struct wpa_supplicant *wpa_s,
1219                                    int go, struct wpa_ssid *ssid, int freq,
1220                                    const u8 *psk, const char *passphrase,
1221                                    const u8 *go_dev_addr, int persistent,
1222                                    const char *extra)
1223 {
1224         const char *ssid_txt;
1225         char psk_txt[65];
1226
1227         if (psk)
1228                 wpa_snprintf_hex(psk_txt, sizeof(psk_txt), psk, 32);
1229         else
1230                 psk_txt[0] = '\0';
1231
1232         if (ssid)
1233                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
1234         else
1235                 ssid_txt = "";
1236
1237         if (passphrase && passphrase[0] == '\0')
1238                 passphrase = NULL;
1239
1240         /*
1241          * Include PSK/passphrase only in the control interface message and
1242          * leave it out from the debug log entry.
1243          */
1244         wpa_msg_global_ctrl(wpa_s->parent, MSG_INFO,
1245                             P2P_EVENT_GROUP_STARTED
1246                             "%s %s ssid=\"%s\" freq=%d%s%s%s%s%s go_dev_addr="
1247                             MACSTR "%s%s",
1248                             wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1249                             psk ? " psk=" : "", psk_txt,
1250                             passphrase ? " passphrase=\"" : "",
1251                             passphrase ? passphrase : "",
1252                             passphrase ? "\"" : "",
1253                             MAC2STR(go_dev_addr),
1254                             persistent ? " [PERSISTENT]" : "", extra);
1255         wpa_printf(MSG_INFO, P2P_EVENT_GROUP_STARTED
1256                    "%s %s ssid=\"%s\" freq=%d go_dev_addr=" MACSTR "%s%s",
1257                    wpa_s->ifname, go ? "GO" : "client", ssid_txt, freq,
1258                    MAC2STR(go_dev_addr), persistent ? " [PERSISTENT]" : "",
1259                    extra);
1260 }
1261
1262
1263 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
1264                                            int success, int already_deleted)
1265 {
1266         struct wpa_ssid *ssid;
1267         int client;
1268         int persistent;
1269         u8 go_dev_addr[ETH_ALEN];
1270         int network_id = -1;
1271
1272         /*
1273          * This callback is likely called for the main interface. Update wpa_s
1274          * to use the group interface if a new interface was created for the
1275          * group.
1276          */
1277         if (wpa_s->global->p2p_group_formation)
1278                 wpa_s = wpa_s->global->p2p_group_formation;
1279         if (wpa_s->p2p_go_group_formation_completed) {
1280                 wpa_s->global->p2p_group_formation = NULL;
1281                 wpa_s->p2p_in_provisioning = 0;
1282         }
1283         wpa_s->p2p_in_invitation = 0;
1284         wpa_s->group_formation_reported = 1;
1285
1286         if (!success) {
1287                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1288                                P2P_EVENT_GROUP_FORMATION_FAILURE);
1289                 if (already_deleted)
1290                         return;
1291                 wpas_p2p_group_delete(wpa_s,
1292                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
1293                 return;
1294         }
1295
1296         wpa_msg_global(wpa_s->parent, MSG_INFO,
1297                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
1298
1299         ssid = wpa_s->current_ssid;
1300         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1301                 ssid->mode = WPAS_MODE_P2P_GO;
1302                 p2p_group_notif_formation_done(wpa_s->p2p_group);
1303                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
1304         }
1305
1306         persistent = 0;
1307         if (ssid) {
1308                 client = ssid->mode == WPAS_MODE_INFRA;
1309                 if (ssid->mode == WPAS_MODE_P2P_GO) {
1310                         persistent = ssid->p2p_persistent_group;
1311                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
1312                                   ETH_ALEN);
1313                 } else
1314                         persistent = wpas_p2p_persistent_group(wpa_s,
1315                                                                go_dev_addr,
1316                                                                ssid->ssid,
1317                                                                ssid->ssid_len);
1318         } else {
1319                 client = wpa_s->p2p_group_interface ==
1320                         P2P_GROUP_INTERFACE_CLIENT;
1321                 os_memset(go_dev_addr, 0, ETH_ALEN);
1322         }
1323
1324         wpa_s->show_group_started = 0;
1325         if (client) {
1326                 /*
1327                  * Indicate event only after successfully completed 4-way
1328                  * handshake, i.e., when the interface is ready for data
1329                  * packets.
1330                  */
1331                 wpa_s->show_group_started = 1;
1332         } else {
1333                 wpas_p2p_group_started(wpa_s, 1, ssid,
1334                                        ssid ? ssid->frequency : 0,
1335                                        ssid && ssid->passphrase == NULL &&
1336                                        ssid->psk_set ? ssid->psk : NULL,
1337                                        ssid ? ssid->passphrase : NULL,
1338                                        go_dev_addr, persistent, "");
1339                 wpas_p2p_cross_connect_setup(wpa_s);
1340                 wpas_p2p_set_group_idle_timeout(wpa_s);
1341         }
1342
1343         if (persistent)
1344                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
1345                                                              ssid, go_dev_addr);
1346         else {
1347                 os_free(wpa_s->global->add_psk);
1348                 wpa_s->global->add_psk = NULL;
1349         }
1350         if (network_id < 0 && ssid)
1351                 network_id = ssid->id;
1352         if (!client) {
1353                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1354                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1355         }
1356 }
1357
1358
1359 struct send_action_work {
1360         unsigned int freq;
1361         u8 dst[ETH_ALEN];
1362         u8 src[ETH_ALEN];
1363         u8 bssid[ETH_ALEN];
1364         size_t len;
1365         unsigned int wait_time;
1366         u8 buf[0];
1367 };
1368
1369
1370 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
1371                                               void *timeout_ctx)
1372 {
1373         struct wpa_supplicant *wpa_s = eloop_ctx;
1374
1375         if (!wpa_s->p2p_send_action_work)
1376                 return;
1377
1378         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
1379         os_free(wpa_s->p2p_send_action_work->ctx);
1380         radio_work_done(wpa_s->p2p_send_action_work);
1381         wpa_s->p2p_send_action_work = NULL;
1382 }
1383
1384
1385 static void wpas_p2p_action_tx_clear(struct wpa_supplicant *wpa_s)
1386 {
1387         if (wpa_s->p2p_send_action_work) {
1388                 struct send_action_work *awork;
1389                 awork = wpa_s->p2p_send_action_work->ctx;
1390                 if (awork->wait_time == 0) {
1391                         os_free(awork);
1392                         radio_work_done(wpa_s->p2p_send_action_work);
1393                         wpa_s->p2p_send_action_work = NULL;
1394                 } else {
1395                         /*
1396                          * In theory, this should not be needed, but number of
1397                          * places in the P2P code is still using non-zero wait
1398                          * time for the last Action frame in the sequence and
1399                          * some of these do not call send_action_done().
1400                          */
1401                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1402                                              wpa_s, NULL);
1403                         eloop_register_timeout(
1404                                 0, awork->wait_time * 1000,
1405                                 wpas_p2p_send_action_work_timeout,
1406                                 wpa_s, NULL);
1407                 }
1408         }
1409 }
1410
1411
1412 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
1413                                            unsigned int freq,
1414                                            const u8 *dst, const u8 *src,
1415                                            const u8 *bssid,
1416                                            const u8 *data, size_t data_len,
1417                                            enum offchannel_send_action_result
1418                                            result)
1419 {
1420         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
1421
1422         wpas_p2p_action_tx_clear(wpa_s);
1423
1424         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
1425                 return;
1426
1427         switch (result) {
1428         case OFFCHANNEL_SEND_ACTION_SUCCESS:
1429                 res = P2P_SEND_ACTION_SUCCESS;
1430                 break;
1431         case OFFCHANNEL_SEND_ACTION_NO_ACK:
1432                 res = P2P_SEND_ACTION_NO_ACK;
1433                 break;
1434         case OFFCHANNEL_SEND_ACTION_FAILED:
1435                 res = P2P_SEND_ACTION_FAILED;
1436                 break;
1437         }
1438
1439         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
1440
1441         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
1442             wpa_s->pending_pd_before_join &&
1443             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
1444              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
1445             wpa_s->p2p_fallback_to_go_neg) {
1446                 wpa_s->pending_pd_before_join = 0;
1447                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
1448                         "during p2p_connect-auto");
1449                 wpa_msg_global(wpa_s->parent, MSG_INFO,
1450                                P2P_EVENT_FALLBACK_TO_GO_NEG
1451                                "reason=no-ACK-to-PD-Req");
1452                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
1453                 return;
1454         }
1455 }
1456
1457
1458 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1459 {
1460         struct wpa_supplicant *wpa_s = work->wpa_s;
1461         struct send_action_work *awork = work->ctx;
1462
1463         if (deinit) {
1464                 if (work->started) {
1465                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1466                                              wpa_s, NULL);
1467                         wpa_s->p2p_send_action_work = NULL;
1468                         offchannel_send_action_done(wpa_s);
1469                 }
1470                 os_free(awork);
1471                 return;
1472         }
1473
1474         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1475                                    awork->bssid, awork->buf, awork->len,
1476                                    awork->wait_time,
1477                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1478                 os_free(awork);
1479                 radio_work_done(work);
1480                 return;
1481         }
1482         wpa_s->p2p_send_action_work = work;
1483 }
1484
1485
1486 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1487                                  unsigned int freq, const u8 *dst,
1488                                  const u8 *src, const u8 *bssid, const u8 *buf,
1489                                  size_t len, unsigned int wait_time)
1490 {
1491         struct send_action_work *awork;
1492
1493         if (wpa_s->p2p_send_action_work) {
1494                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1495                 return -1;
1496         }
1497
1498         awork = os_zalloc(sizeof(*awork) + len);
1499         if (awork == NULL)
1500                 return -1;
1501
1502         awork->freq = freq;
1503         os_memcpy(awork->dst, dst, ETH_ALEN);
1504         os_memcpy(awork->src, src, ETH_ALEN);
1505         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1506         awork->len = len;
1507         awork->wait_time = wait_time;
1508         os_memcpy(awork->buf, buf, len);
1509
1510         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1511                            wpas_send_action_cb, awork) < 0) {
1512                 os_free(awork);
1513                 return -1;
1514         }
1515
1516         return 0;
1517 }
1518
1519
1520 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1521                             const u8 *src, const u8 *bssid, const u8 *buf,
1522                             size_t len, unsigned int wait_time)
1523 {
1524         struct wpa_supplicant *wpa_s = ctx;
1525         int listen_freq = -1, send_freq = -1;
1526
1527         if (wpa_s->p2p_listen_work)
1528                 listen_freq = wpa_s->p2p_listen_work->freq;
1529         if (wpa_s->p2p_send_action_work)
1530                 send_freq = wpa_s->p2p_send_action_work->freq;
1531         if (listen_freq != (int) freq && send_freq != (int) freq) {
1532                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1533                            listen_freq, send_freq);
1534                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1535                                              len, wait_time);
1536         }
1537
1538         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1539         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1540                                       wait_time,
1541                                       wpas_p2p_send_action_tx_status, 1);
1542 }
1543
1544
1545 static void wpas_send_action_done(void *ctx)
1546 {
1547         struct wpa_supplicant *wpa_s = ctx;
1548
1549         if (wpa_s->p2p_send_action_work) {
1550                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1551                                      wpa_s, NULL);
1552                 os_free(wpa_s->p2p_send_action_work->ctx);
1553                 radio_work_done(wpa_s->p2p_send_action_work);
1554                 wpa_s->p2p_send_action_work = NULL;
1555         }
1556
1557         offchannel_send_action_done(wpa_s);
1558 }
1559
1560
1561 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1562                                     struct p2p_go_neg_results *params)
1563 {
1564         if (wpa_s->go_params == NULL) {
1565                 wpa_s->go_params = os_malloc(sizeof(*params));
1566                 if (wpa_s->go_params == NULL)
1567                         return -1;
1568         }
1569         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1570         return 0;
1571 }
1572
1573
1574 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1575                                     struct p2p_go_neg_results *res)
1576 {
1577         wpa_s->group_formation_reported = 0;
1578         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1579                    " dev_addr " MACSTR " wps_method %d",
1580                    MAC2STR(res->peer_interface_addr),
1581                    MAC2STR(res->peer_device_addr), res->wps_method);
1582         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1583                           res->ssid, res->ssid_len);
1584         wpa_supplicant_ap_deinit(wpa_s);
1585         wpas_copy_go_neg_results(wpa_s, res);
1586         if (res->wps_method == WPS_PBC) {
1587                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1588 #ifdef CONFIG_WPS_NFC
1589         } else if (res->wps_method == WPS_NFC) {
1590                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1591                                    res->peer_interface_addr,
1592                                    wpa_s->parent->p2p_oob_dev_pw,
1593                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1594                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1595                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1596                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1597                                    NULL,
1598                                    NULL, 0, 0);
1599 #endif /* CONFIG_WPS_NFC */
1600         } else {
1601                 u16 dev_pw_id = DEV_PW_DEFAULT;
1602                 if (wpa_s->p2p_wps_method == WPS_P2PS)
1603                         dev_pw_id = DEV_PW_P2PS_DEFAULT;
1604                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1605                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1606                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1607                                    wpa_s->p2p_pin, 1, dev_pw_id);
1608         }
1609 }
1610
1611
1612 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1613                                   struct wpa_ssid *ssid)
1614 {
1615         struct wpa_ssid *persistent;
1616         struct psk_list_entry *psk;
1617         struct hostapd_data *hapd;
1618
1619         if (!wpa_s->ap_iface)
1620                 return;
1621
1622         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1623                                              ssid->ssid_len);
1624         if (persistent == NULL)
1625                 return;
1626
1627         hapd = wpa_s->ap_iface->bss[0];
1628
1629         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1630                          list) {
1631                 struct hostapd_wpa_psk *hpsk;
1632
1633                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1634                         MACSTR " psk=%d",
1635                         MAC2STR(psk->addr), psk->p2p);
1636                 hpsk = os_zalloc(sizeof(*hpsk));
1637                 if (hpsk == NULL)
1638                         break;
1639                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1640                 if (psk->p2p)
1641                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1642                 else
1643                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1644                 hpsk->next = hapd->conf->ssid.wpa_psk;
1645                 hapd->conf->ssid.wpa_psk = hpsk;
1646         }
1647 }
1648
1649
1650 static void p2p_go_dump_common_freqs(struct wpa_supplicant *wpa_s)
1651 {
1652         unsigned int i;
1653
1654         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Common group frequencies (len=%u):",
1655                 wpa_s->p2p_group_common_freqs_num);
1656
1657         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++)
1658                 wpa_dbg(wpa_s, MSG_DEBUG, "freq[%u]: %d",
1659                         i, wpa_s->p2p_group_common_freqs[i]);
1660 }
1661
1662
1663 static void p2p_go_save_group_common_freqs(struct wpa_supplicant *wpa_s,
1664                                            struct p2p_go_neg_results *params)
1665 {
1666         unsigned int i, len = int_array_len(wpa_s->go_params->freq_list);
1667
1668         wpa_s->p2p_group_common_freqs_num = 0;
1669         os_free(wpa_s->p2p_group_common_freqs);
1670         wpa_s->p2p_group_common_freqs = os_calloc(len, sizeof(int));
1671         if (!wpa_s->p2p_group_common_freqs)
1672                 return;
1673
1674         for (i = 0; i < len; i++) {
1675                 if (!wpa_s->go_params->freq_list[i])
1676                         break;
1677                 wpa_s->p2p_group_common_freqs[i] =
1678                         wpa_s->go_params->freq_list[i];
1679         }
1680         wpa_s->p2p_group_common_freqs_num = i;
1681 }
1682
1683
1684 static void p2p_config_write(struct wpa_supplicant *wpa_s)
1685 {
1686 #ifndef CONFIG_NO_CONFIG_WRITE
1687         if (wpa_s->parent->conf->update_config &&
1688             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
1689                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
1690 #endif /* CONFIG_NO_CONFIG_WRITE */
1691 }
1692
1693
1694 static void p2p_go_configured(void *ctx, void *data)
1695 {
1696         struct wpa_supplicant *wpa_s = ctx;
1697         struct p2p_go_neg_results *params = data;
1698         struct wpa_ssid *ssid;
1699         int network_id = -1;
1700
1701         p2p_go_save_group_common_freqs(wpa_s, params);
1702         p2p_go_dump_common_freqs(wpa_s);
1703
1704         ssid = wpa_s->current_ssid;
1705         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1706                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1707                 if (wpa_s->global->p2p_group_formation == wpa_s)
1708                         wpa_s->global->p2p_group_formation = NULL;
1709                 wpas_p2p_group_started(wpa_s, 1, ssid, ssid->frequency,
1710                                        params->passphrase[0] == '\0' ?
1711                                        params->psk : NULL,
1712                                        params->passphrase,
1713                                        wpa_s->global->p2p_dev_addr,
1714                                        params->persistent_group, "");
1715                 wpa_s->group_formation_reported = 1;
1716
1717                 if (wpa_s->parent->p2ps_method_config_any) {
1718                         if (is_zero_ether_addr(wpa_s->parent->p2ps_join_addr)) {
1719                                 wpa_dbg(wpa_s, MSG_DEBUG,
1720                                         "P2PS: Setting default PIN for ANY");
1721                                 wpa_supplicant_ap_wps_pin(wpa_s, NULL,
1722                                                           "12345670", NULL, 0,
1723                                                           0);
1724                         } else {
1725                                 wpa_dbg(wpa_s, MSG_DEBUG,
1726                                         "P2PS: Setting default PIN for " MACSTR,
1727                                         MAC2STR(wpa_s->parent->p2ps_join_addr));
1728                                 wpa_supplicant_ap_wps_pin(
1729                                         wpa_s, wpa_s->parent->p2ps_join_addr,
1730                                         "12345670", NULL, 0, 0);
1731                         }
1732                         wpa_s->parent->p2ps_method_config_any = 0;
1733                 }
1734
1735                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1736                 if (params->persistent_group) {
1737                         network_id = wpas_p2p_store_persistent_group(
1738                                 wpa_s->parent, ssid,
1739                                 wpa_s->global->p2p_dev_addr);
1740                         wpas_p2p_add_psk_list(wpa_s, ssid);
1741                 }
1742                 if (network_id < 0)
1743                         network_id = ssid->id;
1744                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1745                 wpas_p2p_cross_connect_setup(wpa_s);
1746                 wpas_p2p_set_group_idle_timeout(wpa_s);
1747
1748                 if (wpa_s->p2p_first_connection_timeout) {
1749                         wpa_dbg(wpa_s, MSG_DEBUG,
1750                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1751                                 wpa_s->p2p_first_connection_timeout);
1752                         wpa_s->p2p_go_group_formation_completed = 0;
1753                         wpa_s->global->p2p_group_formation = wpa_s;
1754                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1755                                              wpa_s->parent, NULL);
1756                         eloop_register_timeout(
1757                                 wpa_s->p2p_first_connection_timeout, 0,
1758                                 wpas_p2p_group_formation_timeout,
1759                                 wpa_s->parent, NULL);
1760                 }
1761
1762                 return;
1763         }
1764
1765         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1766         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1767                                               params->peer_interface_addr)) {
1768                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1769                            "filtering");
1770                 return;
1771         }
1772         if (params->wps_method == WPS_PBC) {
1773                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1774                                           params->peer_device_addr);
1775 #ifdef CONFIG_WPS_NFC
1776         } else if (params->wps_method == WPS_NFC) {
1777                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1778                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1779                     !wpa_s->parent->p2p_oob_dev_pw) {
1780                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1781                         return;
1782                 }
1783                 wpas_ap_wps_add_nfc_pw(
1784                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1785                         wpa_s->parent->p2p_oob_dev_pw,
1786                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1787                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1788 #endif /* CONFIG_WPS_NFC */
1789         } else if (wpa_s->p2p_pin[0])
1790                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1791                                           wpa_s->p2p_pin, NULL, 0, 0);
1792         os_free(wpa_s->go_params);
1793         wpa_s->go_params = NULL;
1794 }
1795
1796
1797 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1798                               struct p2p_go_neg_results *params,
1799                               int group_formation)
1800 {
1801         struct wpa_ssid *ssid;
1802
1803         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1804         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1805                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1806                         "results");
1807                 return;
1808         }
1809
1810         ssid = wpa_config_add_network(wpa_s->conf);
1811         if (ssid == NULL) {
1812                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1813                 return;
1814         }
1815
1816         wpa_s->show_group_started = 0;
1817         wpa_s->p2p_go_group_formation_completed = 0;
1818         wpa_s->group_formation_reported = 0;
1819         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
1820
1821         wpa_config_set_network_defaults(ssid);
1822         ssid->temporary = 1;
1823         ssid->p2p_group = 1;
1824         ssid->p2p_persistent_group = params->persistent_group;
1825         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1826                 WPAS_MODE_P2P_GO;
1827         ssid->frequency = params->freq;
1828         ssid->ht40 = params->ht40;
1829         ssid->vht = params->vht;
1830         ssid->ssid = os_zalloc(params->ssid_len + 1);
1831         if (ssid->ssid) {
1832                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1833                 ssid->ssid_len = params->ssid_len;
1834         }
1835         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1836         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1837         ssid->proto = WPA_PROTO_RSN;
1838         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1839         ssid->group_cipher = WPA_CIPHER_CCMP;
1840         if (params->freq > 56160) {
1841                 /*
1842                  * Enable GCMP instead of CCMP as pairwise_cipher and
1843                  * group_cipher in 60 GHz.
1844                  */
1845                 ssid->pairwise_cipher = WPA_CIPHER_GCMP;
1846                 ssid->group_cipher = WPA_CIPHER_GCMP;
1847         }
1848         if (os_strlen(params->passphrase) > 0) {
1849                 ssid->passphrase = os_strdup(params->passphrase);
1850                 if (ssid->passphrase == NULL) {
1851                         wpa_msg_global(wpa_s, MSG_ERROR,
1852                                        "P2P: Failed to copy passphrase for GO");
1853                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1854                         return;
1855                 }
1856         } else
1857                 ssid->passphrase = NULL;
1858         ssid->psk_set = params->psk_set;
1859         if (ssid->psk_set)
1860                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1861         else if (ssid->passphrase)
1862                 wpa_config_update_psk(ssid);
1863         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1864
1865         wpa_s->ap_configured_cb = p2p_go_configured;
1866         wpa_s->ap_configured_cb_ctx = wpa_s;
1867         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1868         wpa_s->scan_req = NORMAL_SCAN_REQ;
1869         wpa_s->connect_without_scan = ssid;
1870         wpa_s->reassociate = 1;
1871         wpa_s->disconnected = 0;
1872         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1873                 "start GO)");
1874         wpa_supplicant_req_scan(wpa_s, 0, 0);
1875 }
1876
1877
1878 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1879                                   const struct wpa_supplicant *src)
1880 {
1881         struct wpa_config *d;
1882         const struct wpa_config *s;
1883
1884         d = dst->conf;
1885         s = src->conf;
1886
1887 #define C(n) if (s->n) d->n = os_strdup(s->n)
1888         C(device_name);
1889         C(manufacturer);
1890         C(model_name);
1891         C(model_number);
1892         C(serial_number);
1893         C(config_methods);
1894 #undef C
1895
1896         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1897         os_memcpy(d->sec_device_type, s->sec_device_type,
1898                   sizeof(d->sec_device_type));
1899         d->num_sec_device_types = s->num_sec_device_types;
1900
1901         d->p2p_group_idle = s->p2p_group_idle;
1902         d->p2p_go_freq_change_policy = s->p2p_go_freq_change_policy;
1903         d->p2p_intra_bss = s->p2p_intra_bss;
1904         d->persistent_reconnect = s->persistent_reconnect;
1905         d->max_num_sta = s->max_num_sta;
1906         d->pbc_in_m1 = s->pbc_in_m1;
1907         d->ignore_old_scan_res = s->ignore_old_scan_res;
1908         d->beacon_int = s->beacon_int;
1909         d->dtim_period = s->dtim_period;
1910         d->p2p_go_ctwindow = s->p2p_go_ctwindow;
1911         d->disassoc_low_ack = s->disassoc_low_ack;
1912         d->disable_scan_offload = s->disable_scan_offload;
1913         d->passive_scan = s->passive_scan;
1914
1915         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1916                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1917                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1918         }
1919         d->p2p_cli_probe = s->p2p_cli_probe;
1920 }
1921
1922
1923 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1924                                       char *ifname, size_t len)
1925 {
1926         char *ifname_ptr = wpa_s->ifname;
1927
1928         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1929                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1930                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1931         }
1932
1933         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1934         if (os_strlen(ifname) >= IFNAMSIZ &&
1935             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1936                 int res;
1937
1938                 /* Try to avoid going over the IFNAMSIZ length limit */
1939                 res = os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1940                 if (os_snprintf_error(len, res) && len)
1941                         ifname[len - 1] = '\0';
1942         }
1943 }
1944
1945
1946 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1947                                         enum wpa_driver_if_type type)
1948 {
1949         char ifname[120], force_ifname[120];
1950
1951         if (wpa_s->pending_interface_name[0]) {
1952                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1953                            "- skip creation of a new one");
1954                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1955                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1956                                    "unknown?! ifname='%s'",
1957                                    wpa_s->pending_interface_name);
1958                         return -1;
1959                 }
1960                 return 0;
1961         }
1962
1963         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1964         force_ifname[0] = '\0';
1965
1966         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1967                    ifname);
1968         wpa_s->p2p_group_idx++;
1969
1970         wpa_s->pending_interface_type = type;
1971         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1972                            wpa_s->pending_interface_addr, NULL) < 0) {
1973                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1974                            "interface");
1975                 return -1;
1976         }
1977
1978         if (force_ifname[0]) {
1979                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1980                            force_ifname);
1981                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1982                            sizeof(wpa_s->pending_interface_name));
1983         } else
1984                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1985                            sizeof(wpa_s->pending_interface_name));
1986         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1987                    MACSTR, wpa_s->pending_interface_name,
1988                    MAC2STR(wpa_s->pending_interface_addr));
1989
1990         return 0;
1991 }
1992
1993
1994 static void wpas_p2p_remove_pending_group_interface(
1995         struct wpa_supplicant *wpa_s)
1996 {
1997         if (!wpa_s->pending_interface_name[0] ||
1998             is_zero_ether_addr(wpa_s->pending_interface_addr))
1999                 return; /* No pending virtual interface */
2000
2001         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
2002                    wpa_s->pending_interface_name);
2003         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
2004                           wpa_s->pending_interface_name);
2005         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2006         wpa_s->pending_interface_name[0] = '\0';
2007         wpa_s->global->pending_group_iface_for_p2ps = 0;
2008 }
2009
2010
2011 static struct wpa_supplicant *
2012 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
2013 {
2014         struct wpa_interface iface;
2015         struct wpa_supplicant *group_wpa_s;
2016
2017         if (!wpa_s->pending_interface_name[0]) {
2018                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
2019                 if (!wpas_p2p_create_iface(wpa_s))
2020                         return NULL;
2021                 /*
2022                  * Something has forced us to remove the pending interface; try
2023                  * to create a new one and hope for the best that we will get
2024                  * the same local address.
2025                  */
2026                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
2027                                                  WPA_IF_P2P_CLIENT) < 0)
2028                         return NULL;
2029         }
2030
2031         os_memset(&iface, 0, sizeof(iface));
2032         iface.ifname = wpa_s->pending_interface_name;
2033         iface.driver = wpa_s->driver->name;
2034         if (wpa_s->conf->ctrl_interface == NULL &&
2035             wpa_s->parent != wpa_s &&
2036             wpa_s->p2p_mgmt &&
2037             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
2038                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
2039         else
2040                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
2041         iface.driver_param = wpa_s->conf->driver_param;
2042         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
2043         if (group_wpa_s == NULL) {
2044                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
2045                            "wpa_supplicant interface");
2046                 return NULL;
2047         }
2048         wpa_s->pending_interface_name[0] = '\0';
2049         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
2050                 P2P_GROUP_INTERFACE_CLIENT;
2051         wpa_s->global->p2p_group_formation = group_wpa_s;
2052         wpa_s->global->pending_group_iface_for_p2ps = 0;
2053
2054         wpas_p2p_clone_config(group_wpa_s, wpa_s);
2055
2056         return group_wpa_s;
2057 }
2058
2059
2060 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
2061                                              void *timeout_ctx)
2062 {
2063         struct wpa_supplicant *wpa_s = eloop_ctx;
2064         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
2065         wpas_p2p_group_formation_failed(wpa_s, 0);
2066 }
2067
2068
2069 static void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s,
2070                                             int already_deleted)
2071 {
2072         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2073                              wpa_s->parent, NULL);
2074         if (wpa_s->global->p2p)
2075                 p2p_group_formation_failed(wpa_s->global->p2p);
2076         wpas_group_formation_completed(wpa_s, 0, already_deleted);
2077 }
2078
2079
2080 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
2081 {
2082         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
2083         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2084                              wpa_s->parent, NULL);
2085         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2086                                wpa_s->parent, NULL);
2087         wpa_s->global->p2p_fail_on_wps_complete = 0;
2088 }
2089
2090
2091 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
2092 {
2093         if (wpa_s->global->p2p_group_formation != wpa_s)
2094                 return;
2095         /* Speed up group formation timeout since this cannot succeed */
2096         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
2097                              wpa_s->parent, NULL);
2098         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
2099                                wpa_s->parent, NULL);
2100 }
2101
2102
2103 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
2104 {
2105         struct wpa_supplicant *wpa_s = ctx;
2106
2107         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2108                 wpa_drv_cancel_remain_on_channel(wpa_s);
2109                 wpa_s->off_channel_freq = 0;
2110                 wpa_s->roc_waiting_drv_freq = 0;
2111         }
2112
2113         if (res->status) {
2114                 wpa_msg_global(wpa_s, MSG_INFO,
2115                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
2116                                res->status);
2117                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
2118                 wpas_p2p_remove_pending_group_interface(wpa_s);
2119                 return;
2120         }
2121
2122         if (!res->role_go) {
2123                 /* Inform driver of the operating channel of GO. */
2124                 wpa_drv_set_prob_oper_freq(wpa_s, res->freq);
2125         }
2126
2127         if (wpa_s->p2p_go_ht40)
2128                 res->ht40 = 1;
2129         if (wpa_s->p2p_go_vht)
2130                 res->vht = 1;
2131
2132         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
2133                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
2134                        " wps_method=%s",
2135                        res->role_go ? "GO" : "client", res->freq, res->ht40,
2136                        MAC2STR(res->peer_device_addr),
2137                        MAC2STR(res->peer_interface_addr),
2138                        p2p_wps_method_text(res->wps_method));
2139         wpas_notify_p2p_go_neg_completed(wpa_s, res);
2140
2141         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
2142                 struct wpa_ssid *ssid;
2143                 ssid = wpa_config_get_network(wpa_s->conf,
2144                                               wpa_s->p2p_persistent_id);
2145                 if (ssid && ssid->disabled == 2 &&
2146                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
2147                         size_t len = os_strlen(ssid->passphrase);
2148                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
2149                                    "on requested persistent group");
2150                         os_memcpy(res->passphrase, ssid->passphrase, len);
2151                         res->passphrase[len] = '\0';
2152                 }
2153         }
2154
2155         if (wpa_s->create_p2p_iface) {
2156                 struct wpa_supplicant *group_wpa_s =
2157                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
2158                 if (group_wpa_s == NULL) {
2159                         wpas_p2p_remove_pending_group_interface(wpa_s);
2160                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
2161                                              wpa_s, NULL);
2162                         wpas_p2p_group_formation_failed(wpa_s, 1);
2163                         return;
2164                 }
2165                 if (group_wpa_s != wpa_s) {
2166                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
2167                                   sizeof(group_wpa_s->p2p_pin));
2168                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
2169                 }
2170                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
2171                 wpa_s->pending_interface_name[0] = '\0';
2172                 group_wpa_s->p2p_in_provisioning = 1;
2173
2174                 if (res->role_go)
2175                         wpas_start_wps_go(group_wpa_s, res, 1);
2176                 else
2177                         wpas_start_wps_enrollee(group_wpa_s, res);
2178         } else {
2179                 wpa_s->p2p_in_provisioning = 1;
2180                 wpa_s->global->p2p_group_formation = wpa_s;
2181
2182                 if (res->role_go)
2183                         wpas_start_wps_go(wpa_s, res, 1);
2184                 else
2185                         wpas_start_wps_enrollee(ctx, res);
2186         }
2187
2188         wpa_s->p2p_long_listen = 0;
2189         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
2190
2191         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
2192         eloop_register_timeout(15 + res->peer_config_timeout / 100,
2193                                (res->peer_config_timeout % 100) * 10000,
2194                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
2195 }
2196
2197
2198 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id,
2199                                u8 go_intent)
2200 {
2201         struct wpa_supplicant *wpa_s = ctx;
2202         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
2203                        " dev_passwd_id=%u go_intent=%u", MAC2STR(src),
2204                        dev_passwd_id, go_intent);
2205
2206         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id, go_intent);
2207 }
2208
2209
2210 static void wpas_dev_found(void *ctx, const u8 *addr,
2211                            const struct p2p_peer_info *info,
2212                            int new_device)
2213 {
2214 #ifndef CONFIG_NO_STDOUT_DEBUG
2215         struct wpa_supplicant *wpa_s = ctx;
2216         char devtype[WPS_DEV_TYPE_BUFSIZE];
2217         char *wfd_dev_info_hex = NULL;
2218
2219 #ifdef CONFIG_WIFI_DISPLAY
2220         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
2221                                                     WFD_SUBELEM_DEVICE_INFO);
2222 #endif /* CONFIG_WIFI_DISPLAY */
2223
2224         if (info->p2ps_instance) {
2225                 char str[256];
2226                 const u8 *buf = wpabuf_head(info->p2ps_instance);
2227                 size_t len = wpabuf_len(info->p2ps_instance);
2228
2229                 while (len) {
2230                         u32 id;
2231                         u16 methods;
2232                         u8 str_len;
2233
2234                         if (len < 4 + 2 + 1)
2235                                 break;
2236                         id = WPA_GET_LE32(buf);
2237                         buf += sizeof(u32);
2238                         methods = WPA_GET_BE16(buf);
2239                         buf += sizeof(u16);
2240                         str_len = *buf++;
2241                         if (str_len > len - 4 - 2 - 1)
2242                                 break;
2243                         os_memcpy(str, buf, str_len);
2244                         str[str_len] = '\0';
2245                         buf += str_len;
2246                         len -= str_len + sizeof(u32) + sizeof(u16) + sizeof(u8);
2247
2248                         wpa_msg_global(wpa_s, MSG_INFO,
2249                                        P2P_EVENT_DEVICE_FOUND MACSTR
2250                                        " p2p_dev_addr=" MACSTR
2251                                        " pri_dev_type=%s name='%s'"
2252                                        " config_methods=0x%x"
2253                                        " dev_capab=0x%x"
2254                                        " group_capab=0x%x"
2255                                        " adv_id=%x asp_svc=%s%s",
2256                                        MAC2STR(addr),
2257                                        MAC2STR(info->p2p_device_addr),
2258                                        wps_dev_type_bin2str(
2259                                                info->pri_dev_type,
2260                                                devtype, sizeof(devtype)),
2261                                        info->device_name, methods,
2262                                        info->dev_capab, info->group_capab,
2263                                        id, str,
2264                                        info->vendor_elems ?
2265                                        " vendor_elems=1" : "");
2266                 }
2267                 goto done;
2268         }
2269
2270         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
2271                        " p2p_dev_addr=" MACSTR
2272                        " pri_dev_type=%s name='%s' config_methods=0x%x "
2273                        "dev_capab=0x%x group_capab=0x%x%s%s%s new=%d",
2274                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
2275                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
2276                                             sizeof(devtype)),
2277                        info->device_name, info->config_methods,
2278                        info->dev_capab, info->group_capab,
2279                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
2280                        wfd_dev_info_hex ? wfd_dev_info_hex : "",
2281                        info->vendor_elems ? " vendor_elems=1" : "",
2282                        new_device);
2283
2284 done:
2285         os_free(wfd_dev_info_hex);
2286 #endif /* CONFIG_NO_STDOUT_DEBUG */
2287
2288         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
2289 }
2290
2291
2292 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
2293 {
2294         struct wpa_supplicant *wpa_s = ctx;
2295
2296         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
2297                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
2298
2299         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
2300 }
2301
2302
2303 static void wpas_find_stopped(void *ctx)
2304 {
2305         struct wpa_supplicant *wpa_s = ctx;
2306         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
2307         wpas_notify_p2p_find_stopped(wpa_s);
2308 }
2309
2310
2311 struct wpas_p2p_listen_work {
2312         unsigned int freq;
2313         unsigned int duration;
2314         struct wpabuf *probe_resp_ie;
2315 };
2316
2317
2318 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
2319 {
2320         if (lwork == NULL)
2321                 return;
2322         wpabuf_free(lwork->probe_resp_ie);
2323         os_free(lwork);
2324 }
2325
2326
2327 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
2328 {
2329         struct wpas_p2p_listen_work *lwork;
2330
2331         if (!wpa_s->p2p_listen_work)
2332                 return;
2333
2334         lwork = wpa_s->p2p_listen_work->ctx;
2335         wpas_p2p_listen_work_free(lwork);
2336         radio_work_done(wpa_s->p2p_listen_work);
2337         wpa_s->p2p_listen_work = NULL;
2338 }
2339
2340
2341 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
2342 {
2343         struct wpa_supplicant *wpa_s = work->wpa_s;
2344         struct wpas_p2p_listen_work *lwork = work->ctx;
2345         unsigned int duration;
2346
2347         if (deinit) {
2348                 if (work->started) {
2349                         wpa_s->p2p_listen_work = NULL;
2350                         wpas_stop_listen(wpa_s);
2351                 }
2352                 wpas_p2p_listen_work_free(lwork);
2353                 return;
2354         }
2355
2356         wpa_s->p2p_listen_work = work;
2357
2358         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
2359
2360         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
2361                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
2362                            "report received Probe Request frames");
2363                 wpas_p2p_listen_work_done(wpa_s);
2364                 return;
2365         }
2366
2367         wpa_s->pending_listen_freq = lwork->freq;
2368         wpa_s->pending_listen_duration = lwork->duration;
2369
2370         duration = lwork->duration;
2371 #ifdef CONFIG_TESTING_OPTIONS
2372         if (wpa_s->extra_roc_dur) {
2373                 wpa_printf(MSG_DEBUG, "TESTING: Increase ROC duration %u -> %u",
2374                            duration, duration + wpa_s->extra_roc_dur);
2375                 duration += wpa_s->extra_roc_dur;
2376         }
2377 #endif /* CONFIG_TESTING_OPTIONS */
2378
2379         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, duration) < 0) {
2380                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
2381                            "to remain on channel (%u MHz) for Listen "
2382                            "state", lwork->freq);
2383                 wpas_p2p_listen_work_done(wpa_s);
2384                 wpa_s->pending_listen_freq = 0;
2385                 return;
2386         }
2387         wpa_s->off_channel_freq = 0;
2388         wpa_s->roc_waiting_drv_freq = lwork->freq;
2389 }
2390
2391
2392 static int wpas_start_listen(void *ctx, unsigned int freq,
2393                              unsigned int duration,
2394                              const struct wpabuf *probe_resp_ie)
2395 {
2396         struct wpa_supplicant *wpa_s = ctx;
2397         struct wpas_p2p_listen_work *lwork;
2398
2399         if (wpa_s->p2p_listen_work) {
2400                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
2401                 return -1;
2402         }
2403
2404         lwork = os_zalloc(sizeof(*lwork));
2405         if (lwork == NULL)
2406                 return -1;
2407         lwork->freq = freq;
2408         lwork->duration = duration;
2409         if (probe_resp_ie) {
2410                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
2411                 if (lwork->probe_resp_ie == NULL) {
2412                         wpas_p2p_listen_work_free(lwork);
2413                         return -1;
2414                 }
2415         }
2416
2417         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
2418                            lwork) < 0) {
2419                 wpas_p2p_listen_work_free(lwork);
2420                 return -1;
2421         }
2422
2423         return 0;
2424 }
2425
2426
2427 static void wpas_stop_listen(void *ctx)
2428 {
2429         struct wpa_supplicant *wpa_s = ctx;
2430         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
2431                 wpa_drv_cancel_remain_on_channel(wpa_s);
2432                 wpa_s->off_channel_freq = 0;
2433                 wpa_s->roc_waiting_drv_freq = 0;
2434         }
2435         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
2436
2437         /*
2438          * Don't cancel Probe Request RX reporting for a connected P2P Client
2439          * handling Probe Request frames.
2440          */
2441         if (!wpa_s->p2p_cli_probe)
2442                 wpa_drv_probe_req_report(wpa_s, 0);
2443
2444         wpas_p2p_listen_work_done(wpa_s);
2445 }
2446
2447
2448 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf,
2449                                 unsigned int freq)
2450 {
2451         struct wpa_supplicant *wpa_s = ctx;
2452         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1,
2453                                  freq);
2454 }
2455
2456
2457 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2458                                          const u8 *peer, const char *params,
2459                                          unsigned int generated_pin)
2460 {
2461         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2462                        " %08d%s", MAC2STR(peer), generated_pin, params);
2463 }
2464
2465
2466 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2467                                         const u8 *peer, const char *params)
2468 {
2469         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2470                        "%s", MAC2STR(peer), params);
2471 }
2472
2473
2474 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2475                                const u8 *dev_addr, const u8 *pri_dev_type,
2476                                const char *dev_name, u16 supp_config_methods,
2477                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2478                                size_t group_id_len)
2479 {
2480         struct wpa_supplicant *wpa_s = ctx;
2481         char devtype[WPS_DEV_TYPE_BUFSIZE];
2482         char params[300];
2483         u8 empty_dev_type[8];
2484         unsigned int generated_pin = 0;
2485         struct wpa_supplicant *group = NULL;
2486         int res;
2487
2488         if (group_id) {
2489                 for (group = wpa_s->global->ifaces; group; group = group->next)
2490                 {
2491                         struct wpa_ssid *s = group->current_ssid;
2492                         if (s != NULL &&
2493                             s->mode == WPAS_MODE_P2P_GO &&
2494                             group_id_len - ETH_ALEN == s->ssid_len &&
2495                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2496                                       s->ssid_len) == 0)
2497                                 break;
2498                 }
2499         }
2500
2501         if (pri_dev_type == NULL) {
2502                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2503                 pri_dev_type = empty_dev_type;
2504         }
2505         res = os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2506                           " pri_dev_type=%s name='%s' config_methods=0x%x "
2507                           "dev_capab=0x%x group_capab=0x%x%s%s",
2508                           MAC2STR(dev_addr),
2509                           wps_dev_type_bin2str(pri_dev_type, devtype,
2510                                                sizeof(devtype)),
2511                           dev_name, supp_config_methods, dev_capab, group_capab,
2512                           group ? " group=" : "",
2513                           group ? group->ifname : "");
2514         if (os_snprintf_error(sizeof(params), res))
2515                 wpa_printf(MSG_DEBUG, "P2P: PD Request event truncated");
2516         params[sizeof(params) - 1] = '\0';
2517
2518         if (config_methods & WPS_CONFIG_DISPLAY) {
2519                 generated_pin = wps_generate_pin();
2520                 wpas_prov_disc_local_display(wpa_s, peer, params,
2521                                              generated_pin);
2522         } else if (config_methods & WPS_CONFIG_KEYPAD)
2523                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2524         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2525                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2526                                MACSTR "%s", MAC2STR(peer), params);
2527
2528         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2529                                             P2P_PROV_DISC_SUCCESS,
2530                                             config_methods, generated_pin);
2531 }
2532
2533
2534 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2535 {
2536         struct wpa_supplicant *wpa_s = ctx;
2537         unsigned int generated_pin = 0;
2538         char params[20];
2539
2540         if (wpa_s->pending_pd_before_join &&
2541             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2542              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2543                 wpa_s->pending_pd_before_join = 0;
2544                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2545                            "join-existing-group operation");
2546                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2547                 return;
2548         }
2549
2550         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2551             wpa_s->pending_pd_use == AUTO_PD_GO_NEG) {
2552                 int res;
2553
2554                 res = os_snprintf(params, sizeof(params), " peer_go=%d",
2555                                   wpa_s->pending_pd_use == AUTO_PD_JOIN);
2556                 if (os_snprintf_error(sizeof(params), res))
2557                         params[sizeof(params) - 1] = '\0';
2558         } else
2559                 params[0] = '\0';
2560
2561         if (config_methods & WPS_CONFIG_DISPLAY)
2562                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2563         else if (config_methods & WPS_CONFIG_KEYPAD) {
2564                 generated_pin = wps_generate_pin();
2565                 wpas_prov_disc_local_display(wpa_s, peer, params,
2566                                              generated_pin);
2567         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2568                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2569                                MACSTR "%s", MAC2STR(peer), params);
2570
2571         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2572                                             P2P_PROV_DISC_SUCCESS,
2573                                             config_methods, generated_pin);
2574 }
2575
2576
2577 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2578                                 enum p2p_prov_disc_status status,
2579                                 u32 adv_id, const u8 *adv_mac,
2580                                 const char *deferred_session_resp)
2581 {
2582         struct wpa_supplicant *wpa_s = ctx;
2583
2584         if (wpa_s->p2p_fallback_to_go_neg) {
2585                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2586                         "failed - fall back to GO Negotiation");
2587                 wpa_msg_global(wpa_s->parent, MSG_INFO,
2588                                P2P_EVENT_FALLBACK_TO_GO_NEG
2589                                "reason=PD-failed");
2590                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2591                 return;
2592         }
2593
2594         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2595                 wpa_s->pending_pd_before_join = 0;
2596                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2597                            "join-existing-group operation (no ACK for PD "
2598                            "Req attempts)");
2599                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2600                 return;
2601         }
2602
2603         if (adv_id && adv_mac && deferred_session_resp) {
2604                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2605                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x"
2606                                " deferred_session_resp='%s'",
2607                                MAC2STR(peer), status, adv_id,
2608                                deferred_session_resp);
2609         } else if (adv_id && adv_mac) {
2610                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2611                                " p2p_dev_addr=" MACSTR " status=%d adv_id=%x",
2612                                MAC2STR(peer), status, adv_id);
2613         } else {
2614                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2615                                " p2p_dev_addr=" MACSTR " status=%d",
2616                                MAC2STR(peer), status);
2617         }
2618
2619         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2620                                             status, 0, 0);
2621 }
2622
2623
2624 static int freq_included(struct wpa_supplicant *wpa_s,
2625                          const struct p2p_channels *channels,
2626                          unsigned int freq)
2627 {
2628         if ((channels == NULL || p2p_channels_includes_freq(channels, freq)) &&
2629             wpas_p2p_go_is_peer_freq(wpa_s, freq))
2630                 return 1;
2631         return 0;
2632 }
2633
2634
2635 static void wpas_p2p_go_update_common_freqs(struct wpa_supplicant *wpa_s)
2636 {
2637         unsigned int num = P2P_MAX_CHANNELS;
2638         int *common_freqs;
2639         int ret;
2640
2641         p2p_go_dump_common_freqs(wpa_s);
2642         common_freqs = os_calloc(num, sizeof(int));
2643         if (!common_freqs)
2644                 return;
2645
2646         ret = p2p_group_get_common_freqs(wpa_s->p2p_group, common_freqs, &num);
2647         if (ret < 0) {
2648                 wpa_dbg(wpa_s, MSG_DEBUG,
2649                         "P2P: Failed to get group common freqs");
2650                 os_free(common_freqs);
2651                 return;
2652         }
2653
2654         os_free(wpa_s->p2p_group_common_freqs);
2655         wpa_s->p2p_group_common_freqs = common_freqs;
2656         wpa_s->p2p_group_common_freqs_num = num;
2657         p2p_go_dump_common_freqs(wpa_s);
2658 }
2659
2660
2661 /*
2662  * Check if the given frequency is one of the possible operating frequencies
2663  * set after the completion of the GO Negotiation.
2664  */
2665 static int wpas_p2p_go_is_peer_freq(struct wpa_supplicant *wpa_s, int freq)
2666 {
2667         unsigned int i;
2668
2669         p2p_go_dump_common_freqs(wpa_s);
2670
2671         /* assume no restrictions */
2672         if (!wpa_s->p2p_group_common_freqs_num)
2673                 return 1;
2674
2675         for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
2676                 if (wpa_s->p2p_group_common_freqs[i] == freq)
2677                         return 1;
2678         }
2679         return 0;
2680 }
2681
2682
2683 /**
2684  * Pick the best frequency to use from all the currently used frequencies.
2685  */
2686 static int wpas_p2p_pick_best_used_freq(struct wpa_supplicant *wpa_s,
2687                                         struct wpa_used_freq_data *freqs,
2688                                         unsigned int num)
2689 {
2690         unsigned int i, c;
2691
2692         /* find a candidate freq that is supported by P2P */
2693         for (c = 0; c < num; c++)
2694                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[c].freq))
2695                         break;
2696
2697         if (c == num)
2698                 return 0;
2699
2700         /* once we have a candidate, try to find a 'better' one */
2701         for (i = c + 1; i < num; i++) {
2702                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i].freq))
2703                         continue;
2704
2705                 /*
2706                  * 1. Infrastructure station interfaces have higher preference.
2707                  * 2. P2P Clients have higher preference.
2708                  * 3. All others.
2709                  */
2710                 if (freqs[i].flags & WPA_FREQ_USED_BY_INFRA_STATION) {
2711                         c = i;
2712                         break;
2713                 }
2714
2715                 if ((freqs[i].flags & WPA_FREQ_USED_BY_P2P_CLIENT))
2716                         c = i;
2717         }
2718         return freqs[c].freq;
2719 }
2720
2721
2722 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2723                                   const u8 *go_dev_addr, const u8 *ssid,
2724                                   size_t ssid_len, int *go, u8 *group_bssid,
2725                                   int *force_freq, int persistent_group,
2726                                   const struct p2p_channels *channels,
2727                                   int dev_pw_id)
2728 {
2729         struct wpa_supplicant *wpa_s = ctx;
2730         struct wpa_ssid *s;
2731         struct wpa_used_freq_data *freqs;
2732         struct wpa_supplicant *grp;
2733         int best_freq;
2734
2735         if (!persistent_group) {
2736                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2737                            " to join an active group (SSID: %s)",
2738                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2739                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2740                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2741                      == 0 ||
2742                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2743                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2744                                    "authorized invitation");
2745                         goto accept_inv;
2746                 }
2747
2748 #ifdef CONFIG_WPS_NFC
2749                 if (dev_pw_id >= 0 && wpa_s->p2p_nfc_tag_enabled &&
2750                     dev_pw_id == wpa_s->p2p_oob_dev_pw_id) {
2751                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2752                         wpa_s->p2p_wps_method = WPS_NFC;
2753                         wpa_s->pending_join_wps_method = WPS_NFC;
2754                         os_memcpy(wpa_s->pending_join_dev_addr,
2755                                   go_dev_addr, ETH_ALEN);
2756                         os_memcpy(wpa_s->pending_join_iface_addr,
2757                                   bssid, ETH_ALEN);
2758                         goto accept_inv;
2759                 }
2760 #endif /* CONFIG_WPS_NFC */
2761
2762                 /*
2763                  * Do not accept the invitation automatically; notify user and
2764                  * request approval.
2765                  */
2766                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2767         }
2768
2769         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2770         if (grp) {
2771                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2772                            "running persistent group");
2773                 if (*go)
2774                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2775                 goto accept_inv;
2776         }
2777
2778         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2779             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2780                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2781                            "invitation to re-invoke a persistent group");
2782                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2783         } else if (!wpa_s->conf->persistent_reconnect)
2784                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2785
2786         for (s = wpa_s->conf->ssid; s; s = s->next) {
2787                 if (s->disabled == 2 &&
2788                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2789                     s->ssid_len == ssid_len &&
2790                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2791                         break;
2792         }
2793
2794         if (!s) {
2795                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2796                            " requested reinvocation of an unknown group",
2797                            MAC2STR(sa));
2798                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2799         }
2800
2801         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2802                 *go = 1;
2803                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2804                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2805                                    "interface is already in use - reject "
2806                                    "invitation");
2807                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2808                 }
2809                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
2810         } else if (s->mode == WPAS_MODE_P2P_GO) {
2811                 *go = 1;
2812                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
2813                 {
2814                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
2815                                    "interface address for the group");
2816                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
2817                 }
2818                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
2819                           ETH_ALEN);
2820         }
2821
2822 accept_inv:
2823         wpas_p2p_set_own_freq_preference(wpa_s, 0);
2824
2825         best_freq = 0;
2826         freqs = os_calloc(wpa_s->num_multichan_concurrent,
2827                           sizeof(struct wpa_used_freq_data));
2828         if (freqs) {
2829                 int num_channels = wpa_s->num_multichan_concurrent;
2830                 int num = wpas_p2p_valid_oper_freqs(wpa_s, freqs, num_channels);
2831                 best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
2832                 os_free(freqs);
2833         }
2834
2835         /* Get one of the frequencies currently in use */
2836         if (best_freq > 0) {
2837                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
2838                 wpas_p2p_set_own_freq_preference(wpa_s, best_freq);
2839
2840                 if (wpa_s->num_multichan_concurrent < 2 ||
2841                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
2842                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
2843                         *force_freq = best_freq;
2844                 }
2845         }
2846
2847         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
2848             wpas_p2p_num_unused_channels(wpa_s) > 0) {
2849                 if (*go == 0) {
2850                         /* We are the client */
2851                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
2852                                    "running a GO but we are capable of MCC, "
2853                                    "figure out the best channel to use");
2854                         *force_freq = 0;
2855                 } else if (!freq_included(wpa_s, channels, *force_freq)) {
2856                         /* We are the GO, and *force_freq is not in the
2857                          * intersection */
2858                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
2859                                    "in intersection but we are capable of MCC, "
2860                                    "figure out the best channel to use",
2861                                    *force_freq);
2862                         *force_freq = 0;
2863                 }
2864         }
2865
2866         return P2P_SC_SUCCESS;
2867 }
2868
2869
2870 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
2871                                      const u8 *ssid, size_t ssid_len,
2872                                      const u8 *go_dev_addr, u8 status,
2873                                      int op_freq)
2874 {
2875         struct wpa_supplicant *wpa_s = ctx;
2876         struct wpa_ssid *s;
2877
2878         for (s = wpa_s->conf->ssid; s; s = s->next) {
2879                 if (s->disabled == 2 &&
2880                     s->ssid_len == ssid_len &&
2881                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2882                         break;
2883         }
2884
2885         if (status == P2P_SC_SUCCESS) {
2886                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2887                            " was accepted; op_freq=%d MHz, SSID=%s",
2888                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
2889                 if (s) {
2890                         int go = s->mode == WPAS_MODE_P2P_GO;
2891                         wpas_p2p_group_add_persistent(
2892                                 wpa_s, s, go, 0, op_freq, 0, 0, NULL,
2893                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
2894                 } else if (bssid) {
2895                         wpa_s->user_initiated_pd = 0;
2896                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
2897                                       wpa_s->p2p_wps_method, 0, op_freq,
2898                                       ssid, ssid_len);
2899                 }
2900                 return;
2901         }
2902
2903         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
2904                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
2905                            " was rejected (status %u)", MAC2STR(sa), status);
2906                 return;
2907         }
2908
2909         if (!s) {
2910                 if (bssid) {
2911                         wpa_msg_global(wpa_s, MSG_INFO,
2912                                        P2P_EVENT_INVITATION_RECEIVED
2913                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2914                                        " bssid=" MACSTR " unknown-network",
2915                                        MAC2STR(sa), MAC2STR(go_dev_addr),
2916                                        MAC2STR(bssid));
2917                 } else {
2918                         wpa_msg_global(wpa_s, MSG_INFO,
2919                                        P2P_EVENT_INVITATION_RECEIVED
2920                                        "sa=" MACSTR " go_dev_addr=" MACSTR
2921                                        " unknown-network",
2922                                        MAC2STR(sa), MAC2STR(go_dev_addr));
2923                 }
2924                 return;
2925         }
2926
2927         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
2928                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2929                                "sa=" MACSTR " persistent=%d freq=%d",
2930                                MAC2STR(sa), s->id, op_freq);
2931         } else {
2932                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
2933                                "sa=" MACSTR " persistent=%d",
2934                                MAC2STR(sa), s->id);
2935         }
2936 }
2937
2938
2939 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
2940                                         struct wpa_ssid *ssid,
2941                                         const u8 *peer, int inv)
2942 {
2943         size_t i;
2944         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
2945
2946         if (ssid == NULL)
2947                 return;
2948
2949         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
2950                 if (os_memcmp(ssid->p2p_client_list + i * 2 * ETH_ALEN, peer,
2951                               ETH_ALEN) == 0)
2952                         break;
2953         }
2954         if (i >= ssid->num_p2p_clients || !ssid->p2p_client_list) {
2955                 if (ssid->mode != WPAS_MODE_P2P_GO &&
2956                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
2957                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
2958                                    "due to invitation result", ssid->id);
2959                         wpas_notify_network_removed(wpa_s, ssid);
2960                         wpa_config_remove_network(wpa_s->conf, ssid->id);
2961                         return;
2962                 }
2963                 return; /* Peer not found in client list */
2964         }
2965
2966         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
2967                    "group %d client list%s",
2968                    MAC2STR(peer), ssid->id,
2969                    inv ? " due to invitation result" : "");
2970         os_memmove(ssid->p2p_client_list + i * 2 * ETH_ALEN,
2971                    ssid->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
2972                    (ssid->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
2973         ssid->num_p2p_clients--;
2974         if (p2p_wpa_s->conf->update_config &&
2975             wpa_config_write(p2p_wpa_s->confname, p2p_wpa_s->conf))
2976                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
2977 }
2978
2979
2980 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
2981                                           const u8 *peer)
2982 {
2983         struct wpa_ssid *ssid;
2984
2985         wpa_s = wpa_s->global->p2p_invite_group;
2986         if (wpa_s == NULL)
2987                 return; /* No known invitation group */
2988         ssid = wpa_s->current_ssid;
2989         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
2990             !ssid->p2p_persistent_group)
2991                 return; /* Not operating as a GO in persistent group */
2992         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
2993                                        ssid->ssid, ssid->ssid_len);
2994         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
2995 }
2996
2997
2998 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
2999                                    const struct p2p_channels *channels,
3000                                    const u8 *peer, int neg_freq,
3001                                    int peer_oper_freq)
3002 {
3003         struct wpa_supplicant *wpa_s = ctx;
3004         struct wpa_ssid *ssid;
3005         int freq;
3006
3007         if (bssid) {
3008                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3009                                "status=%d " MACSTR,
3010                                status, MAC2STR(bssid));
3011         } else {
3012                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3013                                "status=%d ", status);
3014         }
3015         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3016
3017         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3018                    status, MAC2STR(peer));
3019         if (wpa_s->pending_invite_ssid_id == -1) {
3020                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3021                         wpas_remove_persistent_client(wpa_s, peer);
3022                 return; /* Invitation to active group */
3023         }
3024
3025         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3026                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3027                            "invitation exchange to indicate readiness for "
3028                            "re-invocation");
3029         }
3030
3031         if (status != P2P_SC_SUCCESS) {
3032                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3033                         ssid = wpa_config_get_network(
3034                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3035                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3036                 }
3037                 wpas_p2p_remove_pending_group_interface(wpa_s);
3038                 return;
3039         }
3040
3041         ssid = wpa_config_get_network(wpa_s->conf,
3042                                       wpa_s->pending_invite_ssid_id);
3043         if (ssid == NULL) {
3044                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3045                            "data matching with invitation");
3046                 return;
3047         }
3048
3049         /*
3050          * The peer could have missed our ctrl::ack frame for Invitation
3051          * Response and continue retransmitting the frame. To reduce the
3052          * likelihood of the peer not getting successful TX status for the
3053          * Invitation Response frame, wait a short time here before starting
3054          * the persistent group so that we will remain on the current channel to
3055          * acknowledge any possible retransmission from the peer.
3056          */
3057         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3058                 "starting persistent group");
3059         os_sleep(0, 50000);
3060
3061         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3062             freq_included(wpa_s, channels, neg_freq))
3063                 freq = neg_freq;
3064         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3065                  freq_included(wpa_s, channels, peer_oper_freq))
3066                 freq = peer_oper_freq;
3067         else
3068                 freq = 0;
3069
3070         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3071                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3072         wpas_p2p_group_add_persistent(wpa_s, ssid,
3073                                       ssid->mode == WPAS_MODE_P2P_GO,
3074                                       wpa_s->p2p_persistent_go_freq,
3075                                       freq,
3076                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3077                                       channels,
3078                                       ssid->mode == WPAS_MODE_P2P_GO ?
3079                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3080                                       0);
3081 }
3082
3083
3084 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3085                                     unsigned int freq)
3086 {
3087         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3088                 return 1;
3089         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3090 }
3091
3092
3093 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3094 {
3095         reg->channel[reg->channels] = chan;
3096         reg->channels++;
3097 }
3098
3099
3100 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3101                                      struct p2p_channels *chan,
3102                                      struct p2p_channels *cli_chan)
3103 {
3104         int i, cla = 0;
3105
3106         wpa_s->global->p2p_24ghz_social_channels = 1;
3107
3108         os_memset(cli_chan, 0, sizeof(*cli_chan));
3109
3110         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3111                    "band");
3112
3113         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3114         chan->reg_class[cla].reg_class = 81;
3115         chan->reg_class[cla].channels = 0;
3116         for (i = 0; i < 11; i++) {
3117                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3118                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3119         }
3120         if (chan->reg_class[cla].channels)
3121                 cla++;
3122
3123         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3124                    "band");
3125
3126         /* Operating class 115 - 5 GHz, channels 36-48 */
3127         chan->reg_class[cla].reg_class = 115;
3128         chan->reg_class[cla].channels = 0;
3129         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3130                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3131         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3132                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3133         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3134                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3135         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3136                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3137         if (chan->reg_class[cla].channels)
3138                 cla++;
3139
3140         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3141                    "band");
3142
3143         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3144         chan->reg_class[cla].reg_class = 124;
3145         chan->reg_class[cla].channels = 0;
3146         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3147                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3148         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3149                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3150         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3151                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3152         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3153                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3154         if (chan->reg_class[cla].channels)
3155                 cla++;
3156
3157         chan->reg_classes = cla;
3158         return 0;
3159 }
3160
3161
3162 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3163                                           u16 num_modes,
3164                                           enum hostapd_hw_mode mode)
3165 {
3166         u16 i;
3167
3168         for (i = 0; i < num_modes; i++) {
3169                 if (modes[i].mode == mode)
3170                         return &modes[i];
3171         }
3172
3173         return NULL;
3174 }
3175
3176
3177 enum chan_allowed {
3178         NOT_ALLOWED, NO_IR, ALLOWED
3179 };
3180
3181 static int has_channel(struct wpa_global *global,
3182                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3183 {
3184         int i;
3185         unsigned int freq;
3186
3187         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3188                 chan * 5;
3189         if (wpas_p2p_disallowed_freq(global, freq))
3190                 return NOT_ALLOWED;
3191
3192         for (i = 0; i < mode->num_channels; i++) {
3193                 if (mode->channels[i].chan == chan) {
3194                         if (flags)
3195                                 *flags = mode->channels[i].flag;
3196                         if (mode->channels[i].flag &
3197                             (HOSTAPD_CHAN_DISABLED |
3198                              HOSTAPD_CHAN_RADAR))
3199                                 return NOT_ALLOWED;
3200                         if (mode->channels[i].flag & HOSTAPD_CHAN_NO_IR)
3201                                 return NO_IR;
3202                         return ALLOWED;
3203                 }
3204         }
3205
3206         return NOT_ALLOWED;
3207 }
3208
3209
3210 struct p2p_oper_class_map {
3211         enum hostapd_hw_mode mode;
3212         u8 op_class;
3213         u8 min_chan;
3214         u8 max_chan;
3215         u8 inc;
3216         enum { BW20, BW40PLUS, BW40MINUS, BW80, BW2160 } bw;
3217 };
3218
3219 static const struct p2p_oper_class_map op_class[] = {
3220         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3221 #if 0 /* Do not enable HT40 on 2 GHz for now */
3222         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3223         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3224 #endif
3225         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3226         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3227         { HOSTAPD_MODE_IEEE80211A, 125, 149, 169, 4, BW20 },
3228         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3229         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3230         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3231         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3232
3233         /*
3234          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3235          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3236          * 80 MHz, but currently use the following definition for simplicity
3237          * (these center frequencies are not actual channels, which makes
3238          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3239          * removing invalid channels.
3240          */
3241         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3242         { HOSTAPD_MODE_IEEE80211AD, 180, 1, 4, 1, BW2160 },
3243         { -1, 0, 0, 0, 0, BW20 }
3244 };
3245
3246
3247 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3248                                      struct hostapd_hw_modes *mode,
3249                                      u8 channel)
3250 {
3251         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3252         unsigned int i;
3253
3254         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3255                 return 0;
3256
3257         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3258                 /*
3259                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3260                  * so the center channel is 6 channels away from the start/end.
3261                  */
3262                 if (channel >= center_channels[i] - 6 &&
3263                     channel <= center_channels[i] + 6)
3264                         return center_channels[i];
3265
3266         return 0;
3267 }
3268
3269
3270 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3271                                                struct hostapd_hw_modes *mode,
3272                                                u8 channel, u8 bw)
3273 {
3274         u8 center_chan;
3275         int i, flags;
3276         enum chan_allowed res, ret = ALLOWED;
3277
3278         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3279         if (!center_chan)
3280                 return NOT_ALLOWED;
3281         if (center_chan >= 58 && center_chan <= 138)
3282                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3283
3284         /* check all the channels are available */
3285         for (i = 0; i < 4; i++) {
3286                 int adj_chan = center_chan - 6 + i * 4;
3287
3288                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3289                 if (res == NOT_ALLOWED)
3290                         return NOT_ALLOWED;
3291                 if (res == NO_IR)
3292                         ret = NO_IR;
3293
3294                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3295                         return NOT_ALLOWED;
3296                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3297                         return NOT_ALLOWED;
3298                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3299                         return NOT_ALLOWED;
3300                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3301                         return NOT_ALLOWED;
3302         }
3303
3304         return ret;
3305 }
3306
3307
3308 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3309                                                  struct hostapd_hw_modes *mode,
3310                                                  u8 channel, u8 bw)
3311 {
3312         int flag = 0;
3313         enum chan_allowed res, res2;
3314
3315         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3316         if (bw == BW40MINUS) {
3317                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3318                         return NOT_ALLOWED;
3319                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3320         } else if (bw == BW40PLUS) {
3321                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3322                         return NOT_ALLOWED;
3323                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3324         } else if (bw == BW80) {
3325                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3326         }
3327
3328         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3329                 return NOT_ALLOWED;
3330         if (res == NO_IR || res2 == NO_IR)
3331                 return NO_IR;
3332         return res;
3333 }
3334
3335
3336 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3337                                    struct p2p_channels *chan,
3338                                    struct p2p_channels *cli_chan)
3339 {
3340         struct hostapd_hw_modes *mode;
3341         int cla, op, cli_cla;
3342
3343         if (wpa_s->hw.modes == NULL) {
3344                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3345                            "of all supported channels; assume dualband "
3346                            "support");
3347                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3348         }
3349
3350         cla = cli_cla = 0;
3351
3352         for (op = 0; op_class[op].op_class; op++) {
3353                 const struct p2p_oper_class_map *o = &op_class[op];
3354                 u8 ch;
3355                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3356
3357                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3358                 if (mode == NULL)
3359                         continue;
3360                 if (mode->mode == HOSTAPD_MODE_IEEE80211G)
3361                         wpa_s->global->p2p_24ghz_social_channels = 1;
3362                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3363                         enum chan_allowed res;
3364                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3365                         if (res == ALLOWED) {
3366                                 if (reg == NULL) {
3367                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3368                                                    o->op_class);
3369                                         reg = &chan->reg_class[cla];
3370                                         cla++;
3371                                         reg->reg_class = o->op_class;
3372                                 }
3373                                 reg->channel[reg->channels] = ch;
3374                                 reg->channels++;
3375                         } else if (res == NO_IR &&
3376                                    wpa_s->conf->p2p_add_cli_chan) {
3377                                 if (cli_reg == NULL) {
3378                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3379                                                    o->op_class);
3380                                         cli_reg = &cli_chan->reg_class[cli_cla];
3381                                         cli_cla++;
3382                                         cli_reg->reg_class = o->op_class;
3383                                 }
3384                                 cli_reg->channel[cli_reg->channels] = ch;
3385                                 cli_reg->channels++;
3386                         }
3387                 }
3388                 if (reg) {
3389                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3390                                     reg->channel, reg->channels);
3391                 }
3392                 if (cli_reg) {
3393                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3394                                     cli_reg->channel, cli_reg->channels);
3395                 }
3396         }
3397
3398         chan->reg_classes = cla;
3399         cli_chan->reg_classes = cli_cla;
3400
3401         return 0;
3402 }
3403
3404
3405 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3406                            struct hostapd_hw_modes *mode, u8 channel)
3407 {
3408         int op;
3409         enum chan_allowed ret;
3410
3411         for (op = 0; op_class[op].op_class; op++) {
3412                 const struct p2p_oper_class_map *o = &op_class[op];
3413                 u8 ch;
3414
3415                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3416                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3417                             (o->bw != BW40PLUS && o->bw != BW40MINUS) ||
3418                             ch != channel)
3419                                 continue;
3420                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3421                         if (ret == ALLOWED)
3422                                 return (o->bw == BW40MINUS) ? -1 : 1;
3423                 }
3424         }
3425         return 0;
3426 }
3427
3428
3429 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3430                               struct hostapd_hw_modes *mode, u8 channel)
3431 {
3432         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3433                 return 0;
3434
3435         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3436 }
3437
3438
3439 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3440                         size_t buf_len)
3441 {
3442         struct wpa_supplicant *wpa_s = ctx;
3443
3444         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3445                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3446                         break;
3447         }
3448         if (wpa_s == NULL)
3449                 return -1;
3450
3451         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3452 }
3453
3454
3455 struct wpa_supplicant * wpas_get_p2p_go_iface(struct wpa_supplicant *wpa_s,
3456                                               const u8 *ssid, size_t ssid_len)
3457 {
3458         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3459                 struct wpa_ssid *s = wpa_s->current_ssid;
3460                 if (s == NULL)
3461                         continue;
3462                 if (s->mode != WPAS_MODE_P2P_GO &&
3463                     s->mode != WPAS_MODE_AP &&
3464                     s->mode != WPAS_MODE_P2P_GROUP_FORMATION)
3465                         continue;
3466                 if (s->ssid_len != ssid_len ||
3467                     os_memcmp(ssid, s->ssid, ssid_len) != 0)
3468                         continue;
3469                 return wpa_s;
3470         }
3471
3472         return NULL;
3473
3474 }
3475
3476
3477 struct wpa_supplicant * wpas_get_p2p_client_iface(struct wpa_supplicant *wpa_s,
3478                                                   const u8 *peer_dev_addr)
3479 {
3480         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3481                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3482                 if (ssid && (ssid->mode != WPAS_MODE_INFRA || !ssid->p2p_group))
3483                         continue;
3484                 if (os_memcmp(wpa_s->go_dev_addr, peer_dev_addr, ETH_ALEN) == 0)
3485                         return wpa_s;
3486         }
3487
3488         return NULL;
3489 }
3490
3491
3492 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3493 {
3494         struct wpa_supplicant *wpa_s = ctx;
3495
3496         return wpas_get_p2p_client_iface(wpa_s, dev_addr) != NULL;
3497 }
3498
3499
3500 static int wpas_is_concurrent_session_active(void *ctx)
3501 {
3502         struct wpa_supplicant *wpa_s = ctx;
3503         struct wpa_supplicant *ifs;
3504
3505         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3506                 if (ifs == wpa_s)
3507                         continue;
3508                 if (ifs->wpa_state > WPA_ASSOCIATED)
3509                         return 1;
3510         }
3511         return 0;
3512 }
3513
3514
3515 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3516 {
3517         struct wpa_supplicant *wpa_s = ctx;
3518         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3519 }
3520
3521
3522 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s,
3523                                   const char *conf_p2p_dev)
3524 {
3525         struct wpa_interface iface;
3526         struct wpa_supplicant *p2pdev_wpa_s;
3527         char ifname[100];
3528         char force_name[100];
3529         int ret;
3530
3531         ret = os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3532                           wpa_s->ifname);
3533         if (os_snprintf_error(sizeof(ifname), ret))
3534                 return -1;
3535         force_name[0] = '\0';
3536         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3537         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3538                              force_name, wpa_s->pending_interface_addr, NULL);
3539         if (ret < 0) {
3540                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3541                 return ret;
3542         }
3543         os_strlcpy(wpa_s->pending_interface_name, ifname,
3544                    sizeof(wpa_s->pending_interface_name));
3545
3546         os_memset(&iface, 0, sizeof(iface));
3547         iface.p2p_mgmt = 1;
3548         iface.ifname = wpa_s->pending_interface_name;
3549         iface.driver = wpa_s->driver->name;
3550         iface.driver_param = wpa_s->conf->driver_param;
3551
3552         /*
3553          * If a P2P Device configuration file was given, use it as the interface
3554          * configuration file (instead of using parent's configuration file.
3555          */
3556         if (conf_p2p_dev) {
3557                 iface.confname = conf_p2p_dev;
3558                 iface.ctrl_interface = NULL;
3559         } else {
3560                 iface.confname = wpa_s->confname;
3561                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3562         }
3563
3564         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface, wpa_s);
3565         if (!p2pdev_wpa_s) {
3566                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3567                 return -1;
3568         }
3569
3570         wpa_s->pending_interface_name[0] = '\0';
3571         return 0;
3572 }
3573
3574
3575 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3576                                const u8 *noa, size_t noa_len)
3577 {
3578         struct wpa_supplicant *wpa_s, *intf = ctx;
3579         char hex[100];
3580
3581         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3582                 if (wpa_s->waiting_presence_resp)
3583                         break;
3584         }
3585         if (!wpa_s) {
3586                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3587                 return;
3588         }
3589         wpa_s->waiting_presence_resp = 0;
3590
3591         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3592         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3593                 " status=%u noa=%s", MAC2STR(src), status, hex);
3594 }
3595
3596
3597 static int wpas_get_persistent_group(void *ctx, const u8 *addr, const u8 *ssid,
3598                                      size_t ssid_len, u8 *go_dev_addr,
3599                                      u8 *ret_ssid, size_t *ret_ssid_len,
3600                                      u8 *intended_iface_addr)
3601 {
3602         struct wpa_supplicant *wpa_s = ctx;
3603         struct wpa_ssid *s;
3604
3605         s = wpas_p2p_get_persistent(wpa_s, addr, ssid, ssid_len);
3606         if (s) {
3607                 os_memcpy(ret_ssid, s->ssid, s->ssid_len);
3608                 *ret_ssid_len = s->ssid_len;
3609                 os_memcpy(go_dev_addr, s->bssid, ETH_ALEN);
3610
3611                 if (s->mode != WPAS_MODE_P2P_GO) {
3612                         os_memset(intended_iface_addr, 0, ETH_ALEN);
3613                 } else if (wpas_p2p_create_iface(wpa_s)) {
3614                         if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO))
3615                                 return 0;
3616
3617                         os_memcpy(intended_iface_addr,
3618                                   wpa_s->pending_interface_addr, ETH_ALEN);
3619                 } else {
3620                         os_memcpy(intended_iface_addr, wpa_s->own_addr,
3621                                   ETH_ALEN);
3622                 }
3623                 return 1;
3624         }
3625
3626         return 0;
3627 }
3628
3629
3630 static int wpas_get_go_info(void *ctx, u8 *intended_addr,
3631                             u8 *ssid, size_t *ssid_len, int *group_iface)
3632 {
3633         struct wpa_supplicant *wpa_s = ctx;
3634         struct wpa_ssid *s;
3635         u8 bssid[ETH_ALEN];
3636
3637         /*
3638          * group_iface will be set to 1 only if a dedicated interface for P2P
3639          * role is required. First, we try to reuse an active GO. However,
3640          * if it is not present, we will try to reactivate an existing
3641          * persistent group and set group_iface to 1, so the caller will know
3642          * that the pending interface should be used.
3643          */
3644         *group_iface = 0;
3645         s = wpas_p2p_group_go_ssid(wpa_s, bssid);
3646         if (!s) {
3647                 s = wpas_p2p_get_persistent_go(wpa_s);
3648                 *group_iface = wpas_p2p_create_iface(wpa_s);
3649                 if (s)
3650                         os_memcpy(bssid, s->bssid, ETH_ALEN);
3651                 else
3652                         return 0;
3653         }
3654
3655         os_memcpy(intended_addr, bssid, ETH_ALEN);
3656         os_memcpy(ssid, s->ssid, s->ssid_len);
3657         *ssid_len = s->ssid_len;
3658
3659         return 1;
3660 }
3661
3662
3663 static int wpas_remove_stale_groups(void *ctx, const u8 *peer, const u8 *go,
3664                                     const u8 *ssid, size_t ssid_len)
3665 {
3666         struct wpa_supplicant *wpa_s = ctx;
3667         struct wpa_ssid *s;
3668         int save_config = 0;
3669         size_t i;
3670
3671         /* Start with our first choice of Persistent Groups */
3672         while ((s = wpas_p2p_get_persistent(wpa_s, peer, NULL, 0))) {
3673                 if (go && ssid && ssid_len &&
3674                     s->ssid_len == ssid_len &&
3675                     os_memcmp(go, s->bssid, ETH_ALEN) == 0 &&
3676                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3677                         break;
3678
3679                 /* Remove stale persistent group */
3680                 if (s->mode != WPAS_MODE_P2P_GO || s->num_p2p_clients <= 1) {
3681                         wpa_config_remove_network(wpa_s->conf, s->id);
3682                         save_config = 1;
3683                         continue;
3684                 }
3685
3686                 for (i = 0; i < s->num_p2p_clients; i++) {
3687                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
3688                                       peer, ETH_ALEN) != 0)
3689                                 continue;
3690
3691                         os_memmove(s->p2p_client_list + i * 2 * ETH_ALEN,
3692                                    s->p2p_client_list + (i + 1) * 2 * ETH_ALEN,
3693                                    (s->num_p2p_clients - i - 1) * 2 * ETH_ALEN);
3694                         break;
3695                 }
3696                 s->num_p2p_clients--;
3697                 save_config = 1;
3698         }
3699
3700         if (save_config)
3701                 p2p_config_write(wpa_s);
3702
3703         /* Return TRUE if valid SSID remains */
3704         return s != NULL;
3705 }
3706
3707
3708 static void wpas_p2ps_get_feat_cap_str(char *buf, size_t buf_len,
3709                                        const u8 *feat_cap, size_t feat_cap_len)
3710 {
3711         static const char pref[] = " feature_cap=";
3712         int ret;
3713
3714         buf[0] = '\0';
3715
3716         /*
3717          * We expect a feature capability to contain at least one byte to be
3718          * reported. The string buffer provided by the caller function is
3719          * expected to be big enough to contain all bytes of the attribute for
3720          * known specifications. This function truncates the reported bytes if
3721          * the feature capability data exceeds the string buffer size.
3722          */
3723         if (!feat_cap || !feat_cap_len || buf_len < sizeof(pref) + 2)
3724                 return;
3725
3726         os_memcpy(buf, pref, sizeof(pref));
3727         ret = wpa_snprintf_hex(&buf[sizeof(pref) - 1],
3728                                buf_len - sizeof(pref) + 1,
3729                                feat_cap, feat_cap_len);
3730
3731         if (ret != (2 * (int) feat_cap_len))
3732                 wpa_printf(MSG_WARNING, "P2PS feature_cap bytes truncated");
3733 }
3734
3735
3736 static void wpas_p2ps_prov_complete(void *ctx, u8 status, const u8 *dev,
3737                                     const u8 *adv_mac, const u8 *ses_mac,
3738                                     const u8 *grp_mac, u32 adv_id, u32 ses_id,
3739                                     u8 conncap, int passwd_id,
3740                                     const u8 *persist_ssid,
3741                                     size_t persist_ssid_size, int response_done,
3742                                     int prov_start, const char *session_info,
3743                                     const u8 *feat_cap, size_t feat_cap_len)
3744 {
3745         struct wpa_supplicant *wpa_s = ctx;
3746         u8 mac[ETH_ALEN];
3747         struct wpa_ssid *persistent_go, *stale, *s;
3748         int save_config = 0;
3749         struct wpa_supplicant *go_wpa_s;
3750         char feat_cap_str[256];
3751
3752         if (!dev)
3753                 return;
3754
3755         os_memset(mac, 0, ETH_ALEN);
3756         if (!adv_mac)
3757                 adv_mac = mac;
3758         if (!ses_mac)
3759                 ses_mac = mac;
3760         if (!grp_mac)
3761                 grp_mac = mac;
3762
3763         wpas_p2ps_get_feat_cap_str(feat_cap_str, sizeof(feat_cap_str),
3764                                    feat_cap, feat_cap_len);
3765
3766         if (prov_start) {
3767                 if (session_info == NULL) {
3768                         wpa_msg_global(wpa_s, MSG_INFO,
3769                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3770                                        " adv_id=%x conncap=%x"
3771                                        " adv_mac=" MACSTR
3772                                        " session=%x mac=" MACSTR
3773                                        " dev_passwd_id=%d%s",
3774                                        MAC2STR(dev), adv_id, conncap,
3775                                        MAC2STR(adv_mac),
3776                                        ses_id, MAC2STR(ses_mac),
3777                                        passwd_id, feat_cap_str);
3778                 } else {
3779                         wpa_msg_global(wpa_s, MSG_INFO,
3780                                        P2P_EVENT_P2PS_PROVISION_START MACSTR
3781                                        " adv_id=%x conncap=%x"
3782                                        " adv_mac=" MACSTR
3783                                        " session=%x mac=" MACSTR
3784                                        " dev_passwd_id=%d info='%s'%s",
3785                                        MAC2STR(dev), adv_id, conncap,
3786                                        MAC2STR(adv_mac),
3787                                        ses_id, MAC2STR(ses_mac),
3788                                        passwd_id, session_info, feat_cap_str);
3789                 }
3790                 return;
3791         }
3792
3793         go_wpa_s = wpas_p2p_get_go_group(wpa_s);
3794         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
3795
3796         if (status && status != P2P_SC_SUCCESS_DEFERRED) {
3797                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3798                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3799
3800                 if (persistent_go && !persistent_go->num_p2p_clients) {
3801                         /* remove empty persistent GO */
3802                         wpa_config_remove_network(wpa_s->conf,
3803                                                   persistent_go->id);
3804                 }
3805
3806                 wpa_msg_global(wpa_s, MSG_INFO,
3807                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3808                                " status=%d"
3809                                " adv_id=%x adv_mac=" MACSTR
3810                                " session=%x mac=" MACSTR "%s",
3811                                MAC2STR(dev), status,
3812                                adv_id, MAC2STR(adv_mac),
3813                                ses_id, MAC2STR(ses_mac), feat_cap_str);
3814                 return;
3815         }
3816
3817         /* Clean up stale persistent groups with this device */
3818         s = wpas_p2p_get_persistent(wpa_s, dev, persist_ssid,
3819                                     persist_ssid_size);
3820
3821         if (persist_ssid && s && s->mode != WPAS_MODE_P2P_GO &&
3822             is_zero_ether_addr(grp_mac)) {
3823                 wpa_dbg(wpa_s, MSG_ERROR,
3824                         "P2P: Peer device is a GO in a persistent group, but it did not provide the intended MAC address");
3825                 return;
3826         }
3827
3828         for (;;) {
3829                 stale = wpas_p2p_get_persistent(wpa_s, dev, NULL, 0);
3830                 if (!stale)
3831                         break;
3832
3833                 if (s && s->ssid_len == stale->ssid_len &&
3834                     os_memcmp(stale->bssid, s->bssid, ETH_ALEN) == 0 &&
3835                     os_memcmp(stale->ssid, s->ssid, s->ssid_len) == 0)
3836                         break;
3837
3838                 /* Remove stale persistent group */
3839                 if (stale->mode != WPAS_MODE_P2P_GO ||
3840                     stale->num_p2p_clients <= 1) {
3841                         wpa_config_remove_network(wpa_s->conf, stale->id);
3842                 } else {
3843                         size_t i;
3844
3845                         for (i = 0; i < stale->num_p2p_clients; i++) {
3846                                 if (os_memcmp(stale->p2p_client_list +
3847                                               i * ETH_ALEN,
3848                                               dev, ETH_ALEN) == 0) {
3849                                         os_memmove(stale->p2p_client_list +
3850                                                    i * ETH_ALEN,
3851                                                    stale->p2p_client_list +
3852                                                    (i + 1) * ETH_ALEN,
3853                                                    (stale->num_p2p_clients -
3854                                                     i - 1) * ETH_ALEN);
3855                                         break;
3856                                 }
3857                         }
3858                         stale->num_p2p_clients--;
3859                 }
3860                 save_config = 1;
3861         }
3862
3863         if (save_config)
3864                 p2p_config_write(wpa_s);
3865
3866         if (s) {
3867                 if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3868                         wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3869
3870                 if (persistent_go && s != persistent_go &&
3871                     !persistent_go->num_p2p_clients) {
3872                         /* remove empty persistent GO */
3873                         wpa_config_remove_network(wpa_s->conf,
3874                                                   persistent_go->id);
3875                         /* Save config */
3876                 }
3877
3878                 wpa_msg_global(wpa_s, MSG_INFO,
3879                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3880                                " status=%d"
3881                                " adv_id=%x adv_mac=" MACSTR
3882                                " session=%x mac=" MACSTR
3883                                " persist=%d%s",
3884                                MAC2STR(dev), status,
3885                                adv_id, MAC2STR(adv_mac),
3886                                ses_id, MAC2STR(ses_mac), s->id, feat_cap_str);
3887                 return;
3888         }
3889
3890         if (conncap == P2PS_SETUP_GROUP_OWNER) {
3891                 /*
3892                  * We need to copy the interface name. Simply saving a
3893                  * pointer isn't enough, since if we use pending_interface_name
3894                  * it will be overwritten when the group is added.
3895                  */
3896                 char go_ifname[100];
3897
3898                 go_ifname[0] = '\0';
3899                 if (!go_wpa_s) {
3900                         wpa_s->global->pending_p2ps_group = 1;
3901
3902                         if (!wpas_p2p_create_iface(wpa_s))
3903                                 os_memcpy(go_ifname, wpa_s->ifname,
3904                                           sizeof(go_ifname));
3905                         else if (wpa_s->pending_interface_name[0])
3906                                 os_memcpy(go_ifname,
3907                                           wpa_s->pending_interface_name,
3908                                           sizeof(go_ifname));
3909
3910                         if (!go_ifname[0]) {
3911                                 wpas_p2ps_prov_complete(
3912                                         wpa_s, P2P_SC_FAIL_UNKNOWN_GROUP,
3913                                         dev, adv_mac, ses_mac,
3914                                         grp_mac, adv_id, ses_id, 0, 0,
3915                                         NULL, 0, 0, 0, NULL, NULL, 0);
3916                                 return;
3917                         }
3918
3919                         /* If PD Resp complete, start up the GO */
3920                         if (response_done && persistent_go) {
3921                                 wpas_p2p_group_add_persistent(
3922                                         wpa_s, persistent_go,
3923                                         0, 0, 0, 0, 0, NULL,
3924                                         persistent_go->mode ==
3925                                         WPAS_MODE_P2P_GO ?
3926                                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3927                                         0);
3928                         } else if (response_done) {
3929                                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
3930                         }
3931
3932                         if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3933                                 os_memcpy(wpa_s->p2ps_join_addr, grp_mac,
3934                                           ETH_ALEN);
3935                                 wpa_s->p2ps_method_config_any = 1;
3936                         }
3937                 } else if (passwd_id == DEV_PW_P2PS_DEFAULT) {
3938                         os_memcpy(go_ifname, go_wpa_s->ifname,
3939                                   sizeof(go_ifname));
3940
3941                         if (is_zero_ether_addr(grp_mac)) {
3942                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
3943                                         "P2P: Setting PIN-1 for ANY");
3944                                 wpa_supplicant_ap_wps_pin(go_wpa_s, NULL,
3945                                                           "12345670", NULL, 0,
3946                                                           0);
3947                         } else {
3948                                 wpa_dbg(go_wpa_s, MSG_DEBUG,
3949                                         "P2P: Setting PIN-1 for " MACSTR,
3950                                         MAC2STR(grp_mac));
3951                                 wpa_supplicant_ap_wps_pin(go_wpa_s, grp_mac,
3952                                                           "12345670", NULL, 0,
3953                                                           0);
3954                         }
3955
3956                         os_memcpy(wpa_s->p2ps_join_addr, grp_mac, ETH_ALEN);
3957                         wpa_s->p2ps_method_config_any = 1;
3958                 }
3959
3960                 wpa_msg_global(wpa_s, MSG_INFO,
3961                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3962                                " status=%d conncap=%x"
3963                                " adv_id=%x adv_mac=" MACSTR
3964                                " session=%x mac=" MACSTR
3965                                " dev_passwd_id=%d go=%s%s",
3966                                MAC2STR(dev), status, conncap,
3967                                adv_id, MAC2STR(adv_mac),
3968                                ses_id, MAC2STR(ses_mac),
3969                                passwd_id, go_ifname, feat_cap_str);
3970                 return;
3971         }
3972
3973         if (go_wpa_s && !p2p_group_go_member_count(wpa_s))
3974                 wpas_p2p_group_remove(wpa_s, go_wpa_s->ifname);
3975
3976         if (persistent_go && !persistent_go->num_p2p_clients) {
3977                 /* remove empty persistent GO */
3978                 wpa_config_remove_network(wpa_s->conf, persistent_go->id);
3979         }
3980
3981         if (conncap == P2PS_SETUP_CLIENT) {
3982                 wpa_msg_global(wpa_s, MSG_INFO,
3983                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3984                                " status=%d conncap=%x"
3985                                " adv_id=%x adv_mac=" MACSTR
3986                                " session=%x mac=" MACSTR
3987                                " dev_passwd_id=%d join=" MACSTR "%s",
3988                                MAC2STR(dev), status, conncap,
3989                                adv_id, MAC2STR(adv_mac),
3990                                ses_id, MAC2STR(ses_mac),
3991                                passwd_id, MAC2STR(grp_mac), feat_cap_str);
3992         } else {
3993                 wpa_msg_global(wpa_s, MSG_INFO,
3994                                P2P_EVENT_P2PS_PROVISION_DONE MACSTR
3995                                " status=%d conncap=%x"
3996                                " adv_id=%x adv_mac=" MACSTR
3997                                " session=%x mac=" MACSTR
3998                                " dev_passwd_id=%d%s",
3999                                MAC2STR(dev), status, conncap,
4000                                adv_id, MAC2STR(adv_mac),
4001                                ses_id, MAC2STR(ses_mac),
4002                                passwd_id, feat_cap_str);
4003         }
4004 }
4005
4006
4007 static int _wpas_p2p_in_progress(void *ctx)
4008 {
4009         struct wpa_supplicant *wpa_s = ctx;
4010         return wpas_p2p_in_progress(wpa_s);
4011 }
4012
4013
4014 static int wpas_prov_disc_resp_cb(void *ctx)
4015 {
4016         struct wpa_supplicant *wpa_s = ctx;
4017         struct wpa_ssid *persistent_go;
4018
4019         if (!wpa_s->global->pending_p2ps_group)
4020                 return 0;
4021
4022         wpa_s->global->pending_p2ps_group = 0;
4023
4024         if (wpas_p2p_get_go_group(wpa_s))
4025                 return 0;
4026         persistent_go = wpas_p2p_get_persistent_go(wpa_s);
4027
4028         if (persistent_go) {
4029                 wpas_p2p_group_add_persistent(
4030                         wpa_s, persistent_go, 0, 0, 0, 0, 0, NULL,
4031                         persistent_go->mode == WPAS_MODE_P2P_GO ?
4032                         P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
4033         } else {
4034                 wpas_p2p_group_add(wpa_s, 1, 0, 0, 0);
4035         }
4036
4037         return 1;
4038 }
4039
4040
4041 static int wpas_p2p_get_pref_freq_list(void *ctx, int go,
4042                                        unsigned int *len,
4043                                        unsigned int *freq_list)
4044 {
4045         struct wpa_supplicant *wpa_s = ctx;
4046
4047         return wpa_drv_get_pref_freq_list(wpa_s, go ? WPA_IF_P2P_GO :
4048                                           WPA_IF_P2P_CLIENT, len, freq_list);
4049 }
4050
4051
4052 /**
4053  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
4054  * @global: Pointer to global data from wpa_supplicant_init()
4055  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4056  * Returns: 0 on success, -1 on failure
4057  */
4058 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
4059 {
4060         struct p2p_config p2p;
4061         int i;
4062
4063         if (wpa_s->conf->p2p_disabled)
4064                 return 0;
4065
4066         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
4067                 return 0;
4068
4069         if (global->p2p)
4070                 return 0;
4071
4072         os_memset(&p2p, 0, sizeof(p2p));
4073         p2p.cb_ctx = wpa_s;
4074         p2p.debug_print = wpas_p2p_debug_print;
4075         p2p.p2p_scan = wpas_p2p_scan;
4076         p2p.send_action = wpas_send_action;
4077         p2p.send_action_done = wpas_send_action_done;
4078         p2p.go_neg_completed = wpas_go_neg_completed;
4079         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
4080         p2p.dev_found = wpas_dev_found;
4081         p2p.dev_lost = wpas_dev_lost;
4082         p2p.find_stopped = wpas_find_stopped;
4083         p2p.start_listen = wpas_start_listen;
4084         p2p.stop_listen = wpas_stop_listen;
4085         p2p.send_probe_resp = wpas_send_probe_resp;
4086         p2p.sd_request = wpas_sd_request;
4087         p2p.sd_response = wpas_sd_response;
4088         p2p.prov_disc_req = wpas_prov_disc_req;
4089         p2p.prov_disc_resp = wpas_prov_disc_resp;
4090         p2p.prov_disc_fail = wpas_prov_disc_fail;
4091         p2p.invitation_process = wpas_invitation_process;
4092         p2p.invitation_received = wpas_invitation_received;
4093         p2p.invitation_result = wpas_invitation_result;
4094         p2p.get_noa = wpas_get_noa;
4095         p2p.go_connected = wpas_go_connected;
4096         p2p.presence_resp = wpas_presence_resp;
4097         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
4098         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
4099         p2p.get_persistent_group = wpas_get_persistent_group;
4100         p2p.get_go_info = wpas_get_go_info;
4101         p2p.remove_stale_groups = wpas_remove_stale_groups;
4102         p2p.p2ps_prov_complete = wpas_p2ps_prov_complete;
4103         p2p.prov_disc_resp_cb = wpas_prov_disc_resp_cb;
4104         p2p.p2ps_group_capability = p2ps_group_capability;
4105         p2p.get_pref_freq_list = wpas_p2p_get_pref_freq_list;
4106
4107         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
4108         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
4109         p2p.dev_name = wpa_s->conf->device_name;
4110         p2p.manufacturer = wpa_s->conf->manufacturer;
4111         p2p.model_name = wpa_s->conf->model_name;
4112         p2p.model_number = wpa_s->conf->model_number;
4113         p2p.serial_number = wpa_s->conf->serial_number;
4114         if (wpa_s->wps) {
4115                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
4116                 p2p.config_methods = wpa_s->wps->config_methods;
4117         }
4118
4119         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
4120                 wpa_printf(MSG_ERROR,
4121                            "P2P: Failed to configure supported channel list");
4122                 return -1;
4123         }
4124
4125         if (wpa_s->conf->p2p_listen_reg_class &&
4126             wpa_s->conf->p2p_listen_channel) {
4127                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
4128                 p2p.channel = wpa_s->conf->p2p_listen_channel;
4129                 p2p.channel_forced = 1;
4130         } else {
4131                 /*
4132                  * Pick one of the social channels randomly as the listen
4133                  * channel.
4134                  */
4135                 if (p2p_config_get_random_social(&p2p, &p2p.reg_class,
4136                                                  &p2p.channel) != 0) {
4137                         wpa_printf(MSG_INFO,
4138                                    "P2P: No social channels supported by the driver - do not enable P2P");
4139                         return 0;
4140                 }
4141                 p2p.channel_forced = 0;
4142         }
4143         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d:%d",
4144                    p2p.reg_class, p2p.channel);
4145
4146         if (wpa_s->conf->p2p_oper_reg_class &&
4147             wpa_s->conf->p2p_oper_channel) {
4148                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
4149                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
4150                 p2p.cfg_op_channel = 1;
4151                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
4152                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4153
4154         } else {
4155                 /*
4156                  * Use random operation channel from 2.4 GHz band social
4157                  * channels (1, 6, 11) or band 60 GHz social channel (2) if no
4158                  * other preference is indicated.
4159                  */
4160                 if (p2p_config_get_random_social(&p2p, &p2p.op_reg_class,
4161                                                  &p2p.op_channel) != 0) {
4162                         wpa_printf(MSG_ERROR,
4163                                    "P2P: Failed to select random social channel as operation channel");
4164                         return -1;
4165                 }
4166                 p2p.cfg_op_channel = 0;
4167                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
4168                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
4169         }
4170
4171         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
4172                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
4173                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
4174         }
4175
4176         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
4177                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
4178                 p2p.country[2] = 0x04;
4179         } else
4180                 os_memcpy(p2p.country, "XX\x04", 3);
4181
4182         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
4183                   WPS_DEV_TYPE_LEN);
4184
4185         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
4186         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
4187                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
4188
4189         p2p.concurrent_operations = !!(wpa_s->drv_flags &
4190                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
4191
4192         p2p.max_peers = 100;
4193
4194         if (wpa_s->conf->p2p_ssid_postfix) {
4195                 p2p.ssid_postfix_len =
4196                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
4197                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
4198                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
4199                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
4200                           p2p.ssid_postfix_len);
4201         }
4202
4203         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
4204
4205         p2p.max_listen = wpa_s->max_remain_on_chan;
4206
4207         if (wpa_s->conf->p2p_passphrase_len >= 8 &&
4208             wpa_s->conf->p2p_passphrase_len <= 63)
4209                 p2p.passphrase_len = wpa_s->conf->p2p_passphrase_len;
4210         else
4211                 p2p.passphrase_len = 8;
4212
4213         global->p2p = p2p_init(&p2p);
4214         if (global->p2p == NULL)
4215                 return -1;
4216         global->p2p_init_wpa_s = wpa_s;
4217
4218         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
4219                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
4220                         continue;
4221                 p2p_add_wps_vendor_extension(
4222                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
4223         }
4224
4225         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
4226
4227         return 0;
4228 }
4229
4230
4231 /**
4232  * wpas_p2p_deinit - Deinitialize per-interface P2P data
4233  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4234  *
4235  * This function deinitialize per-interface P2P data.
4236  */
4237 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
4238 {
4239         if (wpa_s->driver && wpa_s->drv_priv)
4240                 wpa_drv_probe_req_report(wpa_s, 0);
4241
4242         if (wpa_s->go_params) {
4243                 /* Clear any stored provisioning info */
4244                 p2p_clear_provisioning_info(
4245                         wpa_s->global->p2p,
4246                         wpa_s->go_params->peer_device_addr);
4247         }
4248
4249         os_free(wpa_s->go_params);
4250         wpa_s->go_params = NULL;
4251         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
4252         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4253         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4254         wpa_s->p2p_long_listen = 0;
4255         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
4256         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
4257         wpas_p2p_remove_pending_group_interface(wpa_s);
4258         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
4259         wpas_p2p_listen_work_done(wpa_s);
4260         if (wpa_s->p2p_send_action_work) {
4261                 os_free(wpa_s->p2p_send_action_work->ctx);
4262                 radio_work_done(wpa_s->p2p_send_action_work);
4263                 wpa_s->p2p_send_action_work = NULL;
4264         }
4265         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
4266
4267         wpabuf_free(wpa_s->p2p_oob_dev_pw);
4268         wpa_s->p2p_oob_dev_pw = NULL;
4269
4270         os_free(wpa_s->p2p_group_common_freqs);
4271         wpa_s->p2p_group_common_freqs = NULL;
4272         wpa_s->p2p_group_common_freqs_num = 0;
4273
4274         /* TODO: remove group interface from the driver if this wpa_s instance
4275          * is on top of a P2P group interface */
4276 }
4277
4278
4279 /**
4280  * wpas_p2p_deinit_global - Deinitialize global P2P module
4281  * @global: Pointer to global data from wpa_supplicant_init()
4282  *
4283  * This function deinitializes the global (per device) P2P module.
4284  */
4285 static void wpas_p2p_deinit_global(struct wpa_global *global)
4286 {
4287         struct wpa_supplicant *wpa_s, *tmp;
4288
4289         wpa_s = global->ifaces;
4290
4291         wpas_p2p_service_flush(global->p2p_init_wpa_s);
4292
4293         /* Remove remaining P2P group interfaces */
4294         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
4295                 wpa_s = wpa_s->next;
4296         while (wpa_s) {
4297                 tmp = global->ifaces;
4298                 while (tmp &&
4299                        (tmp == wpa_s ||
4300                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
4301                         tmp = tmp->next;
4302                 }
4303                 if (tmp == NULL)
4304                         break;
4305                 /* Disconnect from the P2P group and deinit the interface */
4306                 wpas_p2p_disconnect(tmp);
4307         }
4308
4309         /*
4310          * Deinit GO data on any possibly remaining interface (if main
4311          * interface is used as GO).
4312          */
4313         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4314                 if (wpa_s->ap_iface)
4315                         wpas_p2p_group_deinit(wpa_s);
4316         }
4317
4318         p2p_deinit(global->p2p);
4319         global->p2p = NULL;
4320         global->p2p_init_wpa_s = NULL;
4321 }
4322
4323
4324 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4325 {
4326         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4327             wpa_s->conf->p2p_no_group_iface)
4328                 return 0; /* separate interface disabled per configuration */
4329         if (wpa_s->drv_flags &
4330             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4331              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4332                 return 1; /* P2P group requires a new interface in every case
4333                            */
4334         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4335                 return 0; /* driver does not support concurrent operations */
4336         if (wpa_s->global->ifaces->next)
4337                 return 1; /* more that one interface already in use */
4338         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4339                 return 1; /* this interface is already in use */
4340         return 0;
4341 }
4342
4343
4344 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4345                                  const u8 *peer_addr,
4346                                  enum p2p_wps_method wps_method,
4347                                  int go_intent, const u8 *own_interface_addr,
4348                                  unsigned int force_freq, int persistent_group,
4349                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4350 {
4351         if (persistent_group && wpa_s->conf->persistent_reconnect)
4352                 persistent_group = 2;
4353
4354         /*
4355          * Increase GO config timeout if HT40 is used since it takes some time
4356          * to scan channels for coex purposes before the BSS can be started.
4357          */
4358         p2p_set_config_timeout(wpa_s->global->p2p,
4359                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4360
4361         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4362                            go_intent, own_interface_addr, force_freq,
4363                            persistent_group, ssid ? ssid->ssid : NULL,
4364                            ssid ? ssid->ssid_len : 0,
4365                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4366                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4367                            0);
4368 }
4369
4370
4371 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4372                                 const u8 *peer_addr,
4373                                 enum p2p_wps_method wps_method,
4374                                 int go_intent, const u8 *own_interface_addr,
4375                                 unsigned int force_freq, int persistent_group,
4376                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4377 {
4378         if (persistent_group && wpa_s->conf->persistent_reconnect)
4379                 persistent_group = 2;
4380
4381         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4382                              go_intent, own_interface_addr, force_freq,
4383                              persistent_group, ssid ? ssid->ssid : NULL,
4384                              ssid ? ssid->ssid_len : 0, pref_freq,
4385                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4386                              0);
4387 }
4388
4389
4390 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4391 {
4392         wpa_s->p2p_join_scan_count++;
4393         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4394                    wpa_s->p2p_join_scan_count);
4395         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4396                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4397                            " for join operationg - stop join attempt",
4398                            MAC2STR(wpa_s->pending_join_iface_addr));
4399                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4400                 if (wpa_s->p2p_auto_pd) {
4401                         wpa_s->p2p_auto_pd = 0;
4402                         wpa_msg_global(wpa_s, MSG_INFO,
4403                                        P2P_EVENT_PROV_DISC_FAILURE
4404                                        " p2p_dev_addr=" MACSTR " status=N/A",
4405                                        MAC2STR(wpa_s->pending_join_dev_addr));
4406                         return;
4407                 }
4408                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4409                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4410         }
4411 }
4412
4413
4414 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4415 {
4416         int res;
4417         unsigned int num, i;
4418         struct wpa_used_freq_data *freqs;
4419
4420         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4421                 /* Multiple channels are supported and not all are in use */
4422                 return 0;
4423         }
4424
4425         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4426                           sizeof(struct wpa_used_freq_data));
4427         if (!freqs)
4428                 return 1;
4429
4430         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4431                                         wpa_s->num_multichan_concurrent);
4432
4433         for (i = 0; i < num; i++) {
4434                 if (freqs[i].freq == freq) {
4435                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4436                                    freq);
4437                         res = 0;
4438                         goto exit_free;
4439                 }
4440         }
4441
4442         wpa_printf(MSG_DEBUG, "P2P: No valid operating frequencies");
4443         res = 1;
4444
4445 exit_free:
4446         os_free(freqs);
4447         return res;
4448 }
4449
4450
4451 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4452                             const u8 *peer_dev_addr)
4453 {
4454         struct wpa_bss *bss;
4455         int updated;
4456
4457         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4458         if (bss == NULL)
4459                 return -1;
4460         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4461                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4462                            "last scan");
4463                 return 0;
4464         }
4465
4466         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4467                                     &bss->last_update);
4468         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4469                    "%ld.%06ld (%supdated in last scan)",
4470                    bss->last_update.sec, bss->last_update.usec,
4471                    updated ? "": "not ");
4472
4473         return updated;
4474 }
4475
4476
4477 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4478                                    struct wpa_scan_results *scan_res)
4479 {
4480         struct wpa_bss *bss = NULL;
4481         int freq;
4482         u8 iface_addr[ETH_ALEN];
4483
4484         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4485
4486         if (wpa_s->global->p2p_disabled)
4487                 return;
4488
4489         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4490                    scan_res ? (int) scan_res->num : -1,
4491                    wpa_s->p2p_auto_join ? "auto_" : "");
4492
4493         if (scan_res)
4494                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4495
4496         if (wpa_s->p2p_auto_pd) {
4497                 int join = wpas_p2p_peer_go(wpa_s,
4498                                             wpa_s->pending_join_dev_addr);
4499                 if (join == 0 &&
4500                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4501                         wpa_s->auto_pd_scan_retry++;
4502                         bss = wpa_bss_get_bssid_latest(
4503                                 wpa_s, wpa_s->pending_join_dev_addr);
4504                         if (bss) {
4505                                 freq = bss->freq;
4506                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4507                                            "the peer " MACSTR " at %d MHz",
4508                                            wpa_s->auto_pd_scan_retry,
4509                                            MAC2STR(wpa_s->
4510                                                    pending_join_dev_addr),
4511                                            freq);
4512                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4513                                 return;
4514                         }
4515                 }
4516
4517                 if (join < 0)
4518                         join = 0;
4519
4520                 wpa_s->p2p_auto_pd = 0;
4521                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4522                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4523                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4524                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4525                                       wpa_s->pending_join_dev_addr, NULL,
4526                                       wpa_s->pending_pd_config_methods, join,
4527                                       0, wpa_s->user_initiated_pd) < 0) {
4528                         wpa_s->p2p_auto_pd = 0;
4529                         wpa_msg_global(wpa_s, MSG_INFO,
4530                                        P2P_EVENT_PROV_DISC_FAILURE
4531                                        " p2p_dev_addr=" MACSTR " status=N/A",
4532                                        MAC2STR(wpa_s->pending_join_dev_addr));
4533                 }
4534                 return;
4535         }
4536
4537         if (wpa_s->p2p_auto_join) {
4538                 int join = wpas_p2p_peer_go(wpa_s,
4539                                             wpa_s->pending_join_dev_addr);
4540                 if (join < 0) {
4541                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4542                                    "running a GO -> use GO Negotiation");
4543                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4544                                        P2P_EVENT_FALLBACK_TO_GO_NEG
4545                                        "reason=peer-not-running-GO");
4546                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4547                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4548                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4549                                          wpa_s->p2p_go_intent,
4550                                          wpa_s->p2p_connect_freq,
4551                                          wpa_s->p2p_persistent_id,
4552                                          wpa_s->p2p_pd_before_go_neg,
4553                                          wpa_s->p2p_go_ht40,
4554                                          wpa_s->p2p_go_vht);
4555                         return;
4556                 }
4557
4558                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4559                            "try to join the group", join ? "" :
4560                            " in older scan");
4561                 if (!join) {
4562                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4563                                        P2P_EVENT_FALLBACK_TO_GO_NEG_ENABLED);
4564                         wpa_s->p2p_fallback_to_go_neg = 1;
4565                 }
4566         }
4567
4568         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4569                                  wpa_s->pending_join_iface_addr);
4570         if (freq < 0 &&
4571             p2p_get_interface_addr(wpa_s->global->p2p,
4572                                    wpa_s->pending_join_dev_addr,
4573                                    iface_addr) == 0 &&
4574             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0
4575             && !wpa_bss_get_bssid(wpa_s, wpa_s->pending_join_iface_addr)) {
4576                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4577                            "address for join from " MACSTR " to " MACSTR
4578                            " based on newly discovered P2P peer entry",
4579                            MAC2STR(wpa_s->pending_join_iface_addr),
4580                            MAC2STR(iface_addr));
4581                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4582                           ETH_ALEN);
4583
4584                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4585                                          wpa_s->pending_join_iface_addr);
4586         }
4587         if (freq >= 0) {
4588                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4589                            "from P2P peer table: %d MHz", freq);
4590         }
4591         if (wpa_s->p2p_join_ssid_len) {
4592                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4593                            MACSTR " and SSID %s",
4594                            MAC2STR(wpa_s->pending_join_iface_addr),
4595                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4596                                         wpa_s->p2p_join_ssid_len));
4597                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4598                                   wpa_s->p2p_join_ssid,
4599                                   wpa_s->p2p_join_ssid_len);
4600         }
4601         if (!bss) {
4602                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4603                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4604                 bss = wpa_bss_get_bssid_latest(wpa_s,
4605                                                wpa_s->pending_join_iface_addr);
4606         }
4607         if (bss) {
4608                 u8 dev_addr[ETH_ALEN];
4609
4610                 freq = bss->freq;
4611                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4612                            "from BSS table: %d MHz (SSID %s)", freq,
4613                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4614                 if (p2p_parse_dev_addr((const u8 *) (bss + 1), bss->ie_len,
4615                                        dev_addr) == 0 &&
4616                     os_memcmp(wpa_s->pending_join_dev_addr,
4617                               wpa_s->pending_join_iface_addr, ETH_ALEN) == 0 &&
4618                     os_memcmp(dev_addr, wpa_s->pending_join_dev_addr,
4619                               ETH_ALEN) != 0) {
4620                         wpa_printf(MSG_DEBUG,
4621                                    "P2P: Update target GO device address based on BSS entry: " MACSTR " (was " MACSTR ")",
4622                                    MAC2STR(dev_addr),
4623                                    MAC2STR(wpa_s->pending_join_dev_addr));
4624                         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr,
4625                                   ETH_ALEN);
4626                 }
4627         }
4628         if (freq > 0) {
4629                 u16 method;
4630
4631                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4632                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4633                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4634                                        "reason=FREQ_CONFLICT");
4635                         return;
4636                 }
4637
4638                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4639                            "prior to joining an existing group (GO " MACSTR
4640                            " freq=%u MHz)",
4641                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4642                 wpa_s->pending_pd_before_join = 1;
4643
4644                 switch (wpa_s->pending_join_wps_method) {
4645                 case WPS_PIN_DISPLAY:
4646                         method = WPS_CONFIG_KEYPAD;
4647                         break;
4648                 case WPS_PIN_KEYPAD:
4649                         method = WPS_CONFIG_DISPLAY;
4650                         break;
4651                 case WPS_PBC:
4652                         method = WPS_CONFIG_PUSHBUTTON;
4653                         break;
4654                 default:
4655                         method = 0;
4656                         break;
4657                 }
4658
4659                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4660                                                wpa_s->pending_join_dev_addr) ==
4661                      method)) {
4662                         /*
4663                          * We have already performed provision discovery for
4664                          * joining the group. Proceed directly to join
4665                          * operation without duplicated provision discovery. */
4666                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4667                                    "with " MACSTR " already done - proceed to "
4668                                    "join",
4669                                    MAC2STR(wpa_s->pending_join_dev_addr));
4670                         wpa_s->pending_pd_before_join = 0;
4671                         goto start;
4672                 }
4673
4674                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4675                                       wpa_s->pending_join_dev_addr,
4676                                       NULL, method, 1,
4677                                       freq, wpa_s->user_initiated_pd) < 0) {
4678                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4679                                    "Discovery Request before joining an "
4680                                    "existing group");
4681                         wpa_s->pending_pd_before_join = 0;
4682                         goto start;
4683                 }
4684                 return;
4685         }
4686
4687         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4688         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4689         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4690         wpas_p2p_check_join_scan_limit(wpa_s);
4691         return;
4692
4693 start:
4694         /* Start join operation immediately */
4695         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4696 }
4697
4698
4699 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4700                                    const u8 *ssid, size_t ssid_len)
4701 {
4702         int ret;
4703         struct wpa_driver_scan_params params;
4704         struct wpabuf *wps_ie, *ies;
4705         size_t ielen;
4706         int freqs[2] = { 0, 0 };
4707
4708         os_memset(&params, 0, sizeof(params));
4709
4710         /* P2P Wildcard SSID */
4711         params.num_ssids = 1;
4712         if (ssid && ssid_len) {
4713                 params.ssids[0].ssid = ssid;
4714                 params.ssids[0].ssid_len = ssid_len;
4715                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4716                 wpa_s->p2p_join_ssid_len = ssid_len;
4717         } else {
4718                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4719                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4720                 wpa_s->p2p_join_ssid_len = 0;
4721         }
4722
4723         wpa_s->wps->dev.p2p = 1;
4724         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4725                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4726                                         NULL);
4727         if (wps_ie == NULL) {
4728                 wpas_p2p_scan_res_join(wpa_s, NULL);
4729                 return;
4730         }
4731
4732         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4733         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4734         if (ies == NULL) {
4735                 wpabuf_free(wps_ie);
4736                 wpas_p2p_scan_res_join(wpa_s, NULL);
4737                 return;
4738         }
4739         wpabuf_put_buf(ies, wps_ie);
4740         wpabuf_free(wps_ie);
4741
4742         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4743
4744         params.p2p_probe = 1;
4745         params.extra_ies = wpabuf_head(ies);
4746         params.extra_ies_len = wpabuf_len(ies);
4747
4748         if (!freq) {
4749                 int oper_freq;
4750                 /*
4751                  * If freq is not provided, check the operating freq of the GO
4752                  * and use a single channel scan on if possible.
4753                  */
4754                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4755                                               wpa_s->pending_join_iface_addr);
4756                 if (oper_freq > 0)
4757                         freq = oper_freq;
4758         }
4759         if (freq > 0) {
4760                 freqs[0] = freq;
4761                 params.freqs = freqs;
4762         }
4763
4764         /*
4765          * Run a scan to update BSS table and start Provision Discovery once
4766          * the new scan results become available.
4767          */
4768         ret = wpa_drv_scan(wpa_s, &params);
4769         if (!ret) {
4770                 os_get_reltime(&wpa_s->scan_trigger_time);
4771                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4772                 wpa_s->own_scan_requested = 1;
4773         }
4774
4775         wpabuf_free(ies);
4776
4777         if (ret) {
4778                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4779                            "try again later");
4780                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4781                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4782                 wpas_p2p_check_join_scan_limit(wpa_s);
4783         }
4784 }
4785
4786
4787 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4788 {
4789         struct wpa_supplicant *wpa_s = eloop_ctx;
4790         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4791 }
4792
4793
4794 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4795                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4796                          int auto_join, int op_freq,
4797                          const u8 *ssid, size_t ssid_len)
4798 {
4799         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4800                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4801                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4802                    auto_join ? " (auto_join)" : "");
4803         if (ssid && ssid_len) {
4804                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4805                            wpa_ssid_txt(ssid, ssid_len));
4806         }
4807
4808         wpa_s->p2p_auto_pd = 0;
4809         wpa_s->p2p_auto_join = !!auto_join;
4810         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4811         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4812         wpa_s->pending_join_wps_method = wps_method;
4813
4814         /* Make sure we are not running find during connection establishment */
4815         wpas_p2p_stop_find(wpa_s);
4816
4817         wpa_s->p2p_join_scan_count = 0;
4818         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4819         return 0;
4820 }
4821
4822
4823 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4824                                const u8 *ssid, size_t ssid_len)
4825 {
4826         struct wpa_supplicant *group;
4827         struct p2p_go_neg_results res;
4828         struct wpa_bss *bss;
4829
4830         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4831         if (group == NULL)
4832                 return -1;
4833         if (group != wpa_s) {
4834                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4835                           sizeof(group->p2p_pin));
4836                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4837         } else {
4838                 /*
4839                  * Need to mark the current interface for p2p_group_formation
4840                  * when a separate group interface is not used. This is needed
4841                  * to allow p2p_cancel stop a pending p2p_connect-join.
4842                  * wpas_p2p_init_group_interface() addresses this for the case
4843                  * where a separate group interface is used.
4844                  */
4845                 wpa_s->global->p2p_group_formation = wpa_s;
4846         }
4847
4848         group->p2p_in_provisioning = 1;
4849         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4850
4851         os_memset(&res, 0, sizeof(res));
4852         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4853         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4854                   ETH_ALEN);
4855         res.wps_method = wpa_s->pending_join_wps_method;
4856         if (freq && ssid && ssid_len) {
4857                 res.freq = freq;
4858                 res.ssid_len = ssid_len;
4859                 os_memcpy(res.ssid, ssid, ssid_len);
4860         } else {
4861                 bss = wpa_bss_get_bssid_latest(wpa_s,
4862                                                wpa_s->pending_join_iface_addr);
4863                 if (bss) {
4864                         res.freq = bss->freq;
4865                         res.ssid_len = bss->ssid_len;
4866                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4867                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4868                                    bss->freq,
4869                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
4870                 }
4871         }
4872
4873         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4874                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4875                            "starting client");
4876                 wpa_drv_cancel_remain_on_channel(wpa_s);
4877                 wpa_s->off_channel_freq = 0;
4878                 wpa_s->roc_waiting_drv_freq = 0;
4879         }
4880         wpas_start_wps_enrollee(group, &res);
4881
4882         /*
4883          * Allow a longer timeout for join-a-running-group than normal 15
4884          * second group formation timeout since the GO may not have authorized
4885          * our connection yet.
4886          */
4887         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4888         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4889                                wpa_s, NULL);
4890
4891         return 0;
4892 }
4893
4894
4895 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4896                                 int *force_freq, int *pref_freq, int go,
4897                                 unsigned int *pref_freq_list,
4898                                 unsigned int *num_pref_freq)
4899 {
4900         struct wpa_used_freq_data *freqs;
4901         int res, best_freq, num_unused;
4902         unsigned int freq_in_use = 0, num, i, max_pref_freq;
4903
4904         max_pref_freq = *num_pref_freq;
4905         *num_pref_freq = 0;
4906
4907         freqs = os_calloc(wpa_s->num_multichan_concurrent,
4908                           sizeof(struct wpa_used_freq_data));
4909         if (!freqs)
4910                 return -1;
4911
4912         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4913                                         wpa_s->num_multichan_concurrent);
4914
4915         /*
4916          * It is possible that the total number of used frequencies is bigger
4917          * than the number of frequencies used for P2P, so get the system wide
4918          * number of unused frequencies.
4919          */
4920         num_unused = wpas_p2p_num_unused_channels(wpa_s);
4921
4922         wpa_printf(MSG_DEBUG,
4923                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u num_unused=%d",
4924                    freq, wpa_s->num_multichan_concurrent, num, num_unused);
4925
4926         if (freq > 0) {
4927                 int ret;
4928                 if (go)
4929                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4930                 else
4931                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4932                 if (!ret) {
4933                         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
4934                             ieee80211_is_dfs(freq)) {
4935                                 /*
4936                                  * If freq is a DFS channel and DFS is offloaded
4937                                  * to the driver, allow P2P GO to use it.
4938                                  */
4939                                 wpa_printf(MSG_DEBUG,
4940                                            "P2P: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to the driver",
4941                                            freq);
4942                         } else {
4943                                 wpa_printf(MSG_DEBUG,
4944                                            "P2P: The forced channel (%u MHz) is not supported for P2P uses",
4945                                            freq);
4946                                 res = -3;
4947                                 goto exit_free;
4948                         }
4949                 }
4950
4951                 for (i = 0; i < num; i++) {
4952                         if (freqs[i].freq == freq)
4953                                 freq_in_use = 1;
4954                 }
4955
4956                 if (num_unused <= 0 && !freq_in_use) {
4957                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4958                                    freq);
4959                         res = -2;
4960                         goto exit_free;
4961                 }
4962                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4963                            "requested channel (%u MHz)", freq);
4964                 *force_freq = freq;
4965                 goto exit_ok;
4966         }
4967
4968         best_freq = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
4969
4970         if (!wpa_s->conf->num_p2p_pref_chan && *pref_freq == 0) {
4971                 enum wpa_driver_if_type iface_type;
4972
4973                 if (go)
4974                         iface_type = WPA_IF_P2P_GO;
4975                 else
4976                         iface_type = WPA_IF_P2P_CLIENT;
4977
4978                 wpa_printf(MSG_DEBUG, "P2P: best_freq=%d, go=%d",
4979                            best_freq, go);
4980
4981                 res = wpa_drv_get_pref_freq_list(wpa_s, iface_type,
4982                                                  &max_pref_freq,
4983                                                  pref_freq_list);
4984                 if (!res && max_pref_freq > 0) {
4985                         *num_pref_freq = max_pref_freq;
4986                         i = 0;
4987                         while (wpas_p2p_disallowed_freq(wpa_s->global,
4988                                                         pref_freq_list[i]) &&
4989                                i < *num_pref_freq) {
4990                                 wpa_printf(MSG_DEBUG,
4991                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
4992                                            i, pref_freq_list[i]);
4993                                 i++;
4994                         }
4995                         if (i != *num_pref_freq) {
4996                                 best_freq = pref_freq_list[i];
4997                                 wpa_printf(MSG_DEBUG,
4998                                            "P2P: Using preferred_freq_list[%d]=%d",
4999                                            i, best_freq);
5000                         } else {
5001                                 wpa_printf(MSG_DEBUG,
5002                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5003                                 *num_pref_freq = 0;
5004                         }
5005                 } else {
5006                         wpa_printf(MSG_DEBUG,
5007                                    "P2P: No preferred frequency list available");
5008                 }
5009         }
5010
5011         /* We have a candidate frequency to use */
5012         if (best_freq > 0) {
5013                 if (*pref_freq == 0 && num_unused > 0) {
5014                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
5015                                    best_freq);
5016                         *pref_freq = best_freq;
5017                 } else {
5018                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
5019                                    best_freq);
5020                         *force_freq = best_freq;
5021                 }
5022         } else if (num_unused > 0) {
5023                 wpa_printf(MSG_DEBUG,
5024                            "P2P: Current operating channels are not available for P2P. Try to use another channel");
5025                 *force_freq = 0;
5026         } else {
5027                 wpa_printf(MSG_DEBUG,
5028                            "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
5029                 res = -2;
5030                 goto exit_free;
5031         }
5032
5033 exit_ok:
5034         res = 0;
5035 exit_free:
5036         os_free(freqs);
5037         return res;
5038 }
5039
5040
5041 /**
5042  * wpas_p2p_connect - Request P2P Group Formation to be started
5043  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5044  * @peer_addr: Address of the peer P2P Device
5045  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
5046  * @persistent_group: Whether to create a persistent group
5047  * @auto_join: Whether to select join vs. GO Negotiation automatically
5048  * @join: Whether to join an existing group (as a client) instead of starting
5049  *      Group Owner negotiation; @peer_addr is BSSID in that case
5050  * @auth: Whether to only authorize the connection instead of doing that and
5051  *      initiating Group Owner negotiation
5052  * @go_intent: GO Intent or -1 to use default
5053  * @freq: Frequency for the group or 0 for auto-selection
5054  * @persistent_id: Persistent group credentials to use for forcing GO
5055  *      parameters or -1 to generate new values (SSID/passphrase)
5056  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
5057  *      interoperability workaround when initiating group formation
5058  * @ht40: Start GO with 40 MHz channel width
5059  * @vht:  Start GO with VHT support
5060  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
5061  *      failure, -2 on failure due to channel not currently available,
5062  *      -3 if forced channel is not supported
5063  */
5064 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5065                      const char *pin, enum p2p_wps_method wps_method,
5066                      int persistent_group, int auto_join, int join, int auth,
5067                      int go_intent, int freq, int persistent_id, int pd,
5068                      int ht40, int vht)
5069 {
5070         int force_freq = 0, pref_freq = 0;
5071         int ret = 0, res;
5072         enum wpa_driver_if_type iftype;
5073         const u8 *if_addr;
5074         struct wpa_ssid *ssid = NULL;
5075         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
5076
5077         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5078                 return -1;
5079
5080         if (persistent_id >= 0) {
5081                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
5082                 if (ssid == NULL || ssid->disabled != 2 ||
5083                     ssid->mode != WPAS_MODE_P2P_GO)
5084                         return -1;
5085         }
5086
5087         os_free(wpa_s->global->add_psk);
5088         wpa_s->global->add_psk = NULL;
5089
5090         wpa_s->global->p2p_fail_on_wps_complete = 0;
5091         wpa_s->global->pending_p2ps_group = 0;
5092         wpa_s->p2ps_method_config_any = 0;
5093
5094         if (go_intent < 0)
5095                 go_intent = wpa_s->conf->p2p_go_intent;
5096
5097         if (!auth)
5098                 wpa_s->p2p_long_listen = 0;
5099
5100         wpa_s->p2p_wps_method = wps_method;
5101         wpa_s->p2p_persistent_group = !!persistent_group;
5102         wpa_s->p2p_persistent_id = persistent_id;
5103         wpa_s->p2p_go_intent = go_intent;
5104         wpa_s->p2p_connect_freq = freq;
5105         wpa_s->p2p_fallback_to_go_neg = 0;
5106         wpa_s->p2p_pd_before_go_neg = !!pd;
5107         wpa_s->p2p_go_ht40 = !!ht40;
5108         wpa_s->p2p_go_vht = !!vht;
5109
5110         if (pin)
5111                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
5112         else if (wps_method == WPS_PIN_DISPLAY) {
5113                 ret = wps_generate_pin();
5114                 res = os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin),
5115                                   "%08d", ret);
5116                 if (os_snprintf_error(sizeof(wpa_s->p2p_pin), res))
5117                         wpa_s->p2p_pin[sizeof(wpa_s->p2p_pin) - 1] = '\0';
5118                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
5119                            wpa_s->p2p_pin);
5120         } else
5121                 wpa_s->p2p_pin[0] = '\0';
5122
5123         if (join || auto_join) {
5124                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
5125                 if (auth) {
5126                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
5127                                    "connect a running group from " MACSTR,
5128                                    MAC2STR(peer_addr));
5129                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5130                         return ret;
5131                 }
5132                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
5133                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
5134                                            iface_addr) < 0) {
5135                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
5136                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
5137                                          dev_addr);
5138                 }
5139                 if (auto_join) {
5140                         os_get_reltime(&wpa_s->p2p_auto_started);
5141                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
5142                                    "%ld.%06ld",
5143                                    wpa_s->p2p_auto_started.sec,
5144                                    wpa_s->p2p_auto_started.usec);
5145                 }
5146                 wpa_s->user_initiated_pd = 1;
5147                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
5148                                   auto_join, freq, NULL, 0) < 0)
5149                         return -1;
5150                 return ret;
5151         }
5152
5153         size = P2P_MAX_PREF_CHANNELS;
5154         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5155                                    go_intent == 15, pref_freq_list, &size);
5156         if (res)
5157                 return res;
5158         wpas_p2p_set_own_freq_preference(wpa_s,
5159                                          force_freq ? force_freq : pref_freq);
5160
5161         p2p_set_own_pref_freq_list(wpa_s->global->p2p, pref_freq_list, size);
5162
5163         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
5164
5165         if (wpa_s->create_p2p_iface) {
5166                 /* Prepare to add a new interface for the group */
5167                 iftype = WPA_IF_P2P_GROUP;
5168                 if (go_intent == 15)
5169                         iftype = WPA_IF_P2P_GO;
5170                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
5171                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
5172                                    "interface for the group");
5173                         return -1;
5174                 }
5175
5176                 if_addr = wpa_s->pending_interface_addr;
5177         } else {
5178                 if_addr = wpa_s->own_addr;
5179                 os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5180         }
5181
5182         if (auth) {
5183                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
5184                                          go_intent, if_addr,
5185                                          force_freq, persistent_group, ssid,
5186                                          pref_freq) < 0)
5187                         return -1;
5188                 return ret;
5189         }
5190
5191         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
5192                                   go_intent, if_addr, force_freq,
5193                                   persistent_group, ssid, pref_freq) < 0) {
5194                 if (wpa_s->create_p2p_iface)
5195                         wpas_p2p_remove_pending_group_interface(wpa_s);
5196                 return -1;
5197         }
5198         return ret;
5199 }
5200
5201
5202 /**
5203  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
5204  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5205  * @freq: Frequency of the channel in MHz
5206  * @duration: Duration of the stay on the channel in milliseconds
5207  *
5208  * This callback is called when the driver indicates that it has started the
5209  * requested remain-on-channel duration.
5210  */
5211 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5212                                    unsigned int freq, unsigned int duration)
5213 {
5214         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5215                 return;
5216         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)",
5217                    wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5218                    wpa_s->roc_waiting_drv_freq, freq, duration);
5219         if (wpa_s->off_channel_freq &&
5220             wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
5221                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
5222                               wpa_s->pending_listen_duration);
5223                 wpa_s->pending_listen_freq = 0;
5224         } else {
5225                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
5226                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
5227                            freq, duration);
5228         }
5229 }
5230
5231
5232 int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s, unsigned int timeout)
5233 {
5234         /* Limit maximum Listen state time based on driver limitation. */
5235         if (timeout > wpa_s->max_remain_on_chan)
5236                 timeout = wpa_s->max_remain_on_chan;
5237
5238         return p2p_listen(wpa_s->global->p2p, timeout);
5239 }
5240
5241
5242 /**
5243  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
5244  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5245  * @freq: Frequency of the channel in MHz
5246  *
5247  * This callback is called when the driver indicates that a remain-on-channel
5248  * operation has been completed, i.e., the duration on the requested channel
5249  * has timed out.
5250  */
5251 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
5252                                           unsigned int freq)
5253 {
5254         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
5255                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
5256                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
5257         wpas_p2p_listen_work_done(wpa_s);
5258         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5259                 return;
5260         if (wpa_s->p2p_long_listen > 0)
5261                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
5262         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
5263                 return; /* P2P module started a new operation */
5264         if (offchannel_pending_action_tx(wpa_s))
5265                 return;
5266         if (wpa_s->p2p_long_listen > 0) {
5267                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
5268                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
5269         } else {
5270                 /*
5271                  * When listen duration is over, stop listen & update p2p_state
5272                  * to IDLE.
5273                  */
5274                 p2p_stop_listen(wpa_s->global->p2p);
5275         }
5276 }
5277
5278
5279 /**
5280  * wpas_p2p_group_remove - Remove a P2P group
5281  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5282  * @ifname: Network interface name of the group interface or "*" to remove all
5283  *      groups
5284  * Returns: 0 on success, -1 on failure
5285  *
5286  * This function is used to remove a P2P group. This can be used to disconnect
5287  * from a group in which the local end is a P2P Client or to end a P2P Group in
5288  * case the local end is the Group Owner. If a virtual network interface was
5289  * created for this group, that interface will be removed. Otherwise, only the
5290  * configured P2P group network will be removed from the interface.
5291  */
5292 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
5293 {
5294         struct wpa_global *global = wpa_s->global;
5295         struct wpa_supplicant *calling_wpa_s = wpa_s;
5296
5297         if (os_strcmp(ifname, "*") == 0) {
5298                 struct wpa_supplicant *prev;
5299                 wpa_s = global->ifaces;
5300                 while (wpa_s) {
5301                         prev = wpa_s;
5302                         wpa_s = wpa_s->next;
5303                         if (prev->p2p_group_interface !=
5304                             NOT_P2P_GROUP_INTERFACE ||
5305                             (prev->current_ssid &&
5306                              prev->current_ssid->p2p_group))
5307                                 wpas_p2p_disconnect_safely(prev, calling_wpa_s);
5308                 }
5309                 return 0;
5310         }
5311
5312         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5313                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5314                         break;
5315         }
5316
5317         return wpas_p2p_disconnect_safely(wpa_s, calling_wpa_s);
5318 }
5319
5320
5321 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
5322 {
5323         unsigned int r;
5324
5325         if (!wpa_s->conf->num_p2p_pref_chan && !freq) {
5326                 unsigned int i, size = P2P_MAX_PREF_CHANNELS;
5327                 unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS];
5328                 int res;
5329
5330                 res = wpa_drv_get_pref_freq_list(wpa_s, WPA_IF_P2P_GO,
5331                                                  &size, pref_freq_list);
5332                 if (!res && size > 0) {
5333                         i = 0;
5334                         while (wpas_p2p_disallowed_freq(wpa_s->global,
5335                                                         pref_freq_list[i]) &&
5336                                i < size) {
5337                                 wpa_printf(MSG_DEBUG,
5338                                            "P2P: preferred_freq_list[%d]=%d is disallowed",
5339                                            i, pref_freq_list[i]);
5340                                 i++;
5341                         }
5342                         if (i != size) {
5343                                 freq = pref_freq_list[i];
5344                                 wpa_printf(MSG_DEBUG,
5345                                            "P2P: Using preferred_freq_list[%d]=%d",
5346                                            i, freq);
5347                         } else {
5348                                 wpa_printf(MSG_DEBUG,
5349                                            "P2P: All driver preferred frequencies are disallowed for P2P use");
5350                         }
5351                 } else {
5352                         wpa_printf(MSG_DEBUG,
5353                                    "P2P: No preferred frequency list available");
5354                 }
5355         }
5356
5357         if (freq == 2) {
5358                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
5359                            "band");
5360                 if (wpa_s->best_24_freq > 0 &&
5361                     p2p_supported_freq_go(wpa_s->global->p2p,
5362                                           wpa_s->best_24_freq)) {
5363                         freq = wpa_s->best_24_freq;
5364                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
5365                                    "channel: %d MHz", freq);
5366                 } else {
5367                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5368                                 return -1;
5369                         freq = 2412 + (r % 3) * 25;
5370                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
5371                                    "channel: %d MHz", freq);
5372                 }
5373         }
5374
5375         if (freq == 5) {
5376                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
5377                            "band");
5378                 if (wpa_s->best_5_freq > 0 &&
5379                     p2p_supported_freq_go(wpa_s->global->p2p,
5380                                        wpa_s->best_5_freq)) {
5381                         freq = wpa_s->best_5_freq;
5382                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
5383                                    "channel: %d MHz", freq);
5384                 } else {
5385                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5386                                 return -1;
5387                         freq = 5180 + (r % 4) * 20;
5388                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5389                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
5390                                            "5 GHz channel for P2P group");
5391                                 return -1;
5392                         }
5393                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
5394                                    "channel: %d MHz", freq);
5395                 }
5396         }
5397
5398         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
5399                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5400                     ieee80211_is_dfs(freq)) {
5401                         /*
5402                          * If freq is a DFS channel and DFS is offloaded to the
5403                          * driver, allow P2P GO to use it.
5404                          */
5405                         wpa_printf(MSG_DEBUG, "P2P: "
5406                                    "%s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded",
5407                                    __func__, freq);
5408                         return freq;
5409                 }
5410                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
5411                            "(%u MHz) is not supported for P2P uses",
5412                            freq);
5413                 return -1;
5414         }
5415
5416         return freq;
5417 }
5418
5419
5420 static int wpas_p2p_supported_freq_go(struct wpa_supplicant *wpa_s,
5421                                       const struct p2p_channels *channels,
5422                                       int freq)
5423 {
5424         if (!wpas_p2p_disallowed_freq(wpa_s->global, freq) &&
5425             p2p_supported_freq_go(wpa_s->global->p2p, freq) &&
5426             freq_included(wpa_s, channels, freq))
5427                 return 1;
5428         return 0;
5429 }
5430
5431
5432 static void wpas_p2p_select_go_freq_no_pref(struct wpa_supplicant *wpa_s,
5433                                             struct p2p_go_neg_results *params,
5434                                             const struct p2p_channels *channels)
5435 {
5436         unsigned int i, r;
5437
5438         /* first try some random selection of the social channels */
5439         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
5440                 return;
5441
5442         for (i = 0; i < 3; i++) {
5443                 params->freq = 2412 + ((r + i) % 3) * 25;
5444                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5445                         goto out;
5446         }
5447
5448         /* try all other channels in operating class 81 */
5449         for (i = 0; i < 11; i++) {
5450                 params->freq = 2412 + i * 5;
5451
5452                 /* skip social channels; covered in the previous loop */
5453                 if (params->freq == 2412 ||
5454                     params->freq == 2437 ||
5455                     params->freq == 2462)
5456                         continue;
5457
5458                 if (wpas_p2p_supported_freq_go(wpa_s, channels, params->freq))
5459                         goto out;
5460         }
5461
5462         /* try all channels in operating class 115 */
5463         for (i = 0; i < 4; i++) {
5464                 params->freq = 5180 + i * 20;
5465                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5466                     freq_included(wpa_s, channels, params->freq) &&
5467                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5468                         goto out;
5469         }
5470
5471         /* try all channels in operating class 124 */
5472         for (i = 0; i < 4; i++) {
5473                 params->freq = 5745 + i * 20;
5474                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5475                     freq_included(wpa_s, channels, params->freq) &&
5476                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5477                         goto out;
5478         }
5479
5480         /* try social channel class 180 channel 2 */
5481         params->freq = 58320 + 1 * 2160;
5482         if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5483             freq_included(wpa_s, channels, params->freq) &&
5484             p2p_supported_freq(wpa_s->global->p2p, params->freq))
5485                 goto out;
5486
5487         /* try all channels in reg. class 180 */
5488         for (i = 0; i < 4; i++) {
5489                 params->freq = 58320 + i * 2160;
5490                 if (!wpas_p2p_disallowed_freq(wpa_s->global, params->freq) &&
5491                     freq_included(wpa_s, channels, params->freq) &&
5492                     p2p_supported_freq(wpa_s->global->p2p, params->freq))
5493                         goto out;
5494         }
5495
5496         params->freq = 0;
5497         wpa_printf(MSG_DEBUG, "P2P: No 2.4, 5, or 60 GHz channel allowed");
5498         return;
5499 out:
5500         wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference known)",
5501                    params->freq);
5502 }
5503
5504
5505 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
5506                                    struct p2p_go_neg_results *params,
5507                                    int freq, int ht40, int vht,
5508                                    const struct p2p_channels *channels)
5509 {
5510         struct wpa_used_freq_data *freqs;
5511         unsigned int cand;
5512         unsigned int num, i;
5513
5514         os_memset(params, 0, sizeof(*params));
5515         params->role_go = 1;
5516         params->ht40 = ht40;
5517         params->vht = vht;
5518
5519         if (wpa_s->p2p_group_common_freqs_num)
5520                 wpa_printf(MSG_DEBUG, "P2P: %s called for an active GO",
5521                            __func__);
5522
5523         freqs = os_calloc(wpa_s->num_multichan_concurrent,
5524                           sizeof(struct wpa_used_freq_data));
5525         if (!freqs)
5526                 return -1;
5527
5528         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5529                                         wpa_s->num_multichan_concurrent);
5530
5531         /* try using the forced freq */
5532         if (freq) {
5533                 if (!wpas_p2p_supported_freq_go(wpa_s, channels, freq)) {
5534                         wpa_printf(MSG_DEBUG,
5535                                    "P2P: Forced GO freq %d MHz not accepted",
5536                                    freq);
5537                         goto fail;
5538                 }
5539
5540                 for (i = 0; i < num; i++) {
5541                         if (freqs[i].freq == freq) {
5542                                 wpa_printf(MSG_DEBUG,
5543                                            "P2P: forced freq (%d MHz) is also shared",
5544                                            freq);
5545                                 params->freq = freq;
5546                                 goto success;
5547                         }
5548                 }
5549
5550                 if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5551                         wpa_printf(MSG_DEBUG,
5552                                    "P2P: Cannot force GO on freq (%d MHz) as all the channels are in use",
5553                                    freq);
5554                         goto fail;
5555                 }
5556
5557                 wpa_printf(MSG_DEBUG,
5558                            "P2P: force GO freq (%d MHz) on a free channel",
5559                            freq);
5560                 params->freq = freq;
5561                 goto success;
5562         }
5563
5564         /* consider using one of the shared frequencies */
5565         if (num) {
5566                 cand = wpas_p2p_pick_best_used_freq(wpa_s, freqs, num);
5567                 if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5568                         wpa_printf(MSG_DEBUG,
5569                                    "P2P: Use shared freq (%d MHz) for GO",
5570                                    freq);
5571                         params->freq = cand;
5572                         goto success;
5573                 }
5574
5575                 /* try using one of the shared freqs */
5576                 for (i = 0; i < num; i++) {
5577                         if (wpas_p2p_supported_freq_go(wpa_s, channels,
5578                                                        freqs[i].freq)) {
5579                                 wpa_printf(MSG_DEBUG,
5580                                            "P2P: Use shared freq (%d MHz) for GO",
5581                                            freq);
5582                                 params->freq = freqs[i].freq;
5583                                 goto success;
5584                         }
5585                 }
5586         }
5587
5588         if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5589                 wpa_printf(MSG_DEBUG,
5590                            "P2P: Cannot force GO on any of the channels we are already using");
5591                 goto fail;
5592         }
5593
5594         /* try using the setting from the configuration file */
5595         if (wpa_s->conf->p2p_oper_reg_class == 81 &&
5596             wpa_s->conf->p2p_oper_channel >= 1 &&
5597             wpa_s->conf->p2p_oper_channel <= 11 &&
5598             wpas_p2p_supported_freq_go(
5599                     wpa_s, channels,
5600                     2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
5601                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
5602                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5603                            "frequency %d MHz", params->freq);
5604                 goto success;
5605         }
5606
5607         if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
5608              wpa_s->conf->p2p_oper_reg_class == 116 ||
5609              wpa_s->conf->p2p_oper_reg_class == 117 ||
5610              wpa_s->conf->p2p_oper_reg_class == 124 ||
5611              wpa_s->conf->p2p_oper_reg_class == 125 ||
5612              wpa_s->conf->p2p_oper_reg_class == 126 ||
5613              wpa_s->conf->p2p_oper_reg_class == 127) &&
5614             wpas_p2p_supported_freq_go(wpa_s, channels,
5615                                        5000 +
5616                                        5 * wpa_s->conf->p2p_oper_channel)) {
5617                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
5618                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5619                            "frequency %d MHz", params->freq);
5620                 goto success;
5621         }
5622
5623         /* Try using best channels */
5624         if (wpa_s->conf->p2p_oper_channel == 0 &&
5625             wpa_s->best_overall_freq > 0 &&
5626             wpas_p2p_supported_freq_go(wpa_s, channels,
5627                                        wpa_s->best_overall_freq)) {
5628                 params->freq = wpa_s->best_overall_freq;
5629                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5630                            "channel %d MHz", params->freq);
5631                 goto success;
5632         }
5633
5634         if (wpa_s->conf->p2p_oper_channel == 0 &&
5635             wpa_s->best_24_freq > 0 &&
5636             wpas_p2p_supported_freq_go(wpa_s, channels,
5637                                        wpa_s->best_24_freq)) {
5638                 params->freq = wpa_s->best_24_freq;
5639                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5640                            "channel %d MHz", params->freq);
5641                 goto success;
5642         }
5643
5644         if (wpa_s->conf->p2p_oper_channel == 0 &&
5645             wpa_s->best_5_freq > 0 &&
5646             wpas_p2p_supported_freq_go(wpa_s, channels,
5647                                        wpa_s->best_5_freq)) {
5648                 params->freq = wpa_s->best_5_freq;
5649                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5650                            "channel %d MHz", params->freq);
5651                 goto success;
5652         }
5653
5654         /* try using preferred channels */
5655         cand = p2p_get_pref_freq(wpa_s->global->p2p, channels);
5656         if (cand && wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5657                 params->freq = cand;
5658                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5659                            "channels", params->freq);
5660                 goto success;
5661         }
5662
5663         /* Try using one of the group common freqs */
5664         if (wpa_s->p2p_group_common_freqs) {
5665                 for (i = 0; i < wpa_s->p2p_group_common_freqs_num; i++) {
5666                         cand = wpa_s->p2p_group_common_freqs[i];
5667                         if (wpas_p2p_supported_freq_go(wpa_s, channels, cand)) {
5668                                 params->freq = cand;
5669                                 wpa_printf(MSG_DEBUG,
5670                                            "P2P: Use freq %d MHz common with the peer",
5671                                            params->freq);
5672                                 goto success;
5673                         }
5674                 }
5675         }
5676
5677         /* no preference, select some channel */
5678         wpas_p2p_select_go_freq_no_pref(wpa_s, params, channels);
5679
5680         if (params->freq == 0) {
5681                 wpa_printf(MSG_DEBUG, "P2P: did not find a freq for GO use");
5682                 goto fail;
5683         }
5684
5685 success:
5686         os_free(freqs);
5687         return 0;
5688 fail:
5689         os_free(freqs);
5690         return -1;
5691 }
5692
5693
5694 static struct wpa_supplicant *
5695 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5696                          int go)
5697 {
5698         struct wpa_supplicant *group_wpa_s;
5699
5700         if (!wpas_p2p_create_iface(wpa_s)) {
5701                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5702                         "operations");
5703                 wpa_s->p2p_first_connection_timeout = 0;
5704                 return wpa_s;
5705         }
5706
5707         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5708                                          WPA_IF_P2P_CLIENT) < 0) {
5709                 wpa_msg_global(wpa_s, MSG_ERROR,
5710                                "P2P: Failed to add group interface");
5711                 return NULL;
5712         }
5713         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5714         if (group_wpa_s == NULL) {
5715                 wpa_msg_global(wpa_s, MSG_ERROR,
5716                                "P2P: Failed to initialize group interface");
5717                 wpas_p2p_remove_pending_group_interface(wpa_s);
5718                 return NULL;
5719         }
5720
5721         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5722                 group_wpa_s->ifname);
5723         group_wpa_s->p2p_first_connection_timeout = 0;
5724         return group_wpa_s;
5725 }
5726
5727
5728 /**
5729  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5730  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5731  * @persistent_group: Whether to create a persistent group
5732  * @freq: Frequency for the group or 0 to indicate no hardcoding
5733  * @ht40: Start GO with 40 MHz channel width
5734  * @vht:  Start GO with VHT support
5735  * Returns: 0 on success, -1 on failure
5736  *
5737  * This function creates a new P2P group with the local end as the Group Owner,
5738  * i.e., without using Group Owner Negotiation.
5739  */
5740 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5741                        int freq, int ht40, int vht)
5742 {
5743         struct p2p_go_neg_results params;
5744
5745         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5746                 return -1;
5747
5748         os_free(wpa_s->global->add_psk);
5749         wpa_s->global->add_psk = NULL;
5750
5751         /* Make sure we are not running find during connection establishment */
5752         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5753         wpas_p2p_stop_find_oper(wpa_s);
5754
5755         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5756         if (freq < 0)
5757                 return -1;
5758
5759         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5760                 return -1;
5761         if (params.freq &&
5762             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5763                 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_DFS_OFFLOAD) &&
5764                     ieee80211_is_dfs(params.freq)) {
5765                         /*
5766                          * If freq is a DFS channel and DFS is offloaded to the
5767                          * driver, allow P2P GO to use it.
5768                          */
5769                         wpa_printf(MSG_DEBUG,
5770                                    "P2P: %s: The forced channel for GO (%u MHz) is DFS, and DFS is offloaded to driver",
5771                                 __func__, params.freq);
5772                 } else {
5773                         wpa_printf(MSG_DEBUG,
5774                                    "P2P: The selected channel for GO (%u MHz) is not supported for P2P uses",
5775                                    params.freq);
5776                         return -1;
5777                 }
5778         }
5779         p2p_go_params(wpa_s->global->p2p, &params);
5780         params.persistent_group = persistent_group;
5781
5782         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5783         if (wpa_s == NULL)
5784                 return -1;
5785         wpas_start_wps_go(wpa_s, &params, 0);
5786
5787         return 0;
5788 }
5789
5790
5791 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5792                                  struct wpa_ssid *params, int addr_allocated,
5793                                  int freq)
5794 {
5795         struct wpa_ssid *ssid;
5796
5797         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5798         if (wpa_s == NULL)
5799                 return -1;
5800         wpa_s->p2p_last_4way_hs_fail = NULL;
5801
5802         wpa_supplicant_ap_deinit(wpa_s);
5803
5804         ssid = wpa_config_add_network(wpa_s->conf);
5805         if (ssid == NULL)
5806                 return -1;
5807         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
5808         wpa_config_set_network_defaults(ssid);
5809         ssid->temporary = 1;
5810         ssid->proto = WPA_PROTO_RSN;
5811         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5812         ssid->group_cipher = WPA_CIPHER_CCMP;
5813         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5814         ssid->ssid = os_malloc(params->ssid_len);
5815         if (ssid->ssid == NULL) {
5816                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5817                 return -1;
5818         }
5819         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5820         ssid->ssid_len = params->ssid_len;
5821         ssid->p2p_group = 1;
5822         ssid->export_keys = 1;
5823         if (params->psk_set) {
5824                 os_memcpy(ssid->psk, params->psk, 32);
5825                 ssid->psk_set = 1;
5826         }
5827         if (params->passphrase)
5828                 ssid->passphrase = os_strdup(params->passphrase);
5829
5830         wpa_s->show_group_started = 1;
5831         wpa_s->p2p_in_invitation = 1;
5832         wpa_s->p2p_invite_go_freq = freq;
5833
5834         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5835                              NULL);
5836         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5837                                wpas_p2p_group_formation_timeout,
5838                                wpa_s->parent, NULL);
5839         wpa_supplicant_select_network(wpa_s, ssid);
5840
5841         return 0;
5842 }
5843
5844
5845 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5846                                   struct wpa_ssid *ssid, int addr_allocated,
5847                                   int force_freq, int neg_freq, int ht40,
5848                                   int vht, const struct p2p_channels *channels,
5849                                   int connection_timeout)
5850 {
5851         struct p2p_go_neg_results params;
5852         int go = 0, freq;
5853
5854         if (ssid->disabled != 2 || ssid->ssid == NULL)
5855                 return -1;
5856
5857         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5858             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5859                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5860                            "already running");
5861                 if (go == 0 &&
5862                     eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5863                                          wpa_s->parent, NULL)) {
5864                         /*
5865                          * This can happen if Invitation Response frame was lost
5866                          * and the peer (GO of a persistent group) tries to
5867                          * invite us again. Reschedule the timeout to avoid
5868                          * terminating the wait for the connection too early
5869                          * since we now know that the peer is still trying to
5870                          * invite us instead of having already started the GO.
5871                          */
5872                         wpa_printf(MSG_DEBUG,
5873                                    "P2P: Reschedule group formation timeout since peer is still trying to invite us");
5874                         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5875                                                wpas_p2p_group_formation_timeout,
5876                                                wpa_s->parent, NULL);
5877                 }
5878                 return 0;
5879         }
5880
5881         os_free(wpa_s->global->add_psk);
5882         wpa_s->global->add_psk = NULL;
5883
5884         /* Make sure we are not running find during connection establishment */
5885         wpas_p2p_stop_find_oper(wpa_s);
5886
5887         wpa_s->p2p_fallback_to_go_neg = 0;
5888
5889         if (ssid->mode == WPAS_MODE_P2P_GO) {
5890                 if (force_freq > 0) {
5891                         freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
5892                         if (freq < 0)
5893                                 return -1;
5894                 } else {
5895                         freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
5896                         if (freq < 0 ||
5897                             (freq > 0 && !freq_included(wpa_s, channels, freq)))
5898                                 freq = 0;
5899                 }
5900         } else if (ssid->mode == WPAS_MODE_INFRA) {
5901                 freq = neg_freq;
5902                 if (freq <= 0 || !freq_included(wpa_s, channels, freq)) {
5903                         struct os_reltime now;
5904                         struct wpa_bss *bss =
5905                                 wpa_bss_get_p2p_dev_addr(wpa_s, ssid->bssid);
5906
5907                         os_get_reltime(&now);
5908                         if (bss &&
5909                             !os_reltime_expired(&now, &bss->last_update, 5) &&
5910                             freq_included(wpa_s, channels, bss->freq))
5911                                 freq = bss->freq;
5912                         else
5913                                 freq = 0;
5914                 }
5915
5916                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq);
5917         } else {
5918                 return -1;
5919         }
5920
5921         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
5922                 return -1;
5923
5924         params.role_go = 1;
5925         params.psk_set = ssid->psk_set;
5926         if (params.psk_set)
5927                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5928         if (ssid->passphrase) {
5929                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5930                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5931                                    "persistent group");
5932                         return -1;
5933                 }
5934                 os_strlcpy(params.passphrase, ssid->passphrase,
5935                            sizeof(params.passphrase));
5936         }
5937         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5938         params.ssid_len = ssid->ssid_len;
5939         params.persistent_group = 1;
5940
5941         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5942         if (wpa_s == NULL)
5943                 return -1;
5944
5945         p2p_channels_to_freqs(channels, params.freq_list, P2P_MAX_CHANNELS);
5946
5947         wpa_s->p2p_first_connection_timeout = connection_timeout;
5948         wpas_start_wps_go(wpa_s, &params, 0);
5949
5950         return 0;
5951 }
5952
5953
5954 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5955                                struct wpabuf *proberesp_ies)
5956 {
5957         struct wpa_supplicant *wpa_s = ctx;
5958         if (wpa_s->ap_iface) {
5959                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5960                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5961                         wpabuf_free(beacon_ies);
5962                         wpabuf_free(proberesp_ies);
5963                         return;
5964                 }
5965                 if (beacon_ies) {
5966                         wpabuf_free(hapd->p2p_beacon_ie);
5967                         hapd->p2p_beacon_ie = beacon_ies;
5968                 }
5969                 wpabuf_free(hapd->p2p_probe_resp_ie);
5970                 hapd->p2p_probe_resp_ie = proberesp_ies;
5971         } else {
5972                 wpabuf_free(beacon_ies);
5973                 wpabuf_free(proberesp_ies);
5974         }
5975         wpa_supplicant_ap_update_beacon(wpa_s);
5976 }
5977
5978
5979 static void wpas_p2p_idle_update(void *ctx, int idle)
5980 {
5981         struct wpa_supplicant *wpa_s = ctx;
5982         if (!wpa_s->ap_iface)
5983                 return;
5984         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5985         if (idle) {
5986                 if (wpa_s->global->p2p_fail_on_wps_complete &&
5987                     wpa_s->p2p_in_provisioning) {
5988                         wpas_p2p_grpform_fail_after_wps(wpa_s);
5989                         return;
5990                 }
5991                 wpas_p2p_set_group_idle_timeout(wpa_s);
5992         } else
5993                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5994 }
5995
5996
5997 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5998                                        struct wpa_ssid *ssid)
5999 {
6000         struct p2p_group *group;
6001         struct p2p_group_config *cfg;
6002
6003         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6004                 return NULL;
6005
6006         cfg = os_zalloc(sizeof(*cfg));
6007         if (cfg == NULL)
6008                 return NULL;
6009
6010         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
6011                 cfg->persistent_group = 2;
6012         else if (ssid->p2p_persistent_group)
6013                 cfg->persistent_group = 1;
6014         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
6015         if (wpa_s->max_stations &&
6016             wpa_s->max_stations < wpa_s->conf->max_num_sta)
6017                 cfg->max_clients = wpa_s->max_stations;
6018         else
6019                 cfg->max_clients = wpa_s->conf->max_num_sta;
6020         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
6021         cfg->ssid_len = ssid->ssid_len;
6022         cfg->freq = ssid->frequency;
6023         cfg->cb_ctx = wpa_s;
6024         cfg->ie_update = wpas_p2p_ie_update;
6025         cfg->idle_update = wpas_p2p_idle_update;
6026
6027         group = p2p_group_init(wpa_s->global->p2p, cfg);
6028         if (group == NULL)
6029                 os_free(cfg);
6030         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
6031                 p2p_group_notif_formation_done(group);
6032         wpa_s->p2p_group = group;
6033         return group;
6034 }
6035
6036
6037 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6038                           int registrar)
6039 {
6040         struct wpa_ssid *ssid = wpa_s->current_ssid;
6041
6042         if (!wpa_s->p2p_in_provisioning) {
6043                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
6044                            "provisioning not in progress");
6045                 return;
6046         }
6047
6048         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6049                 u8 go_dev_addr[ETH_ALEN];
6050                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
6051                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6052                                           ssid->ssid_len);
6053                 /* Clear any stored provisioning info */
6054                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
6055         }
6056
6057         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
6058                              NULL);
6059         wpa_s->p2p_go_group_formation_completed = 1;
6060         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
6061                 /*
6062                  * Use a separate timeout for initial data connection to
6063                  * complete to allow the group to be removed automatically if
6064                  * something goes wrong in this step before the P2P group idle
6065                  * timeout mechanism is taken into use.
6066                  */
6067                 wpa_dbg(wpa_s, MSG_DEBUG,
6068                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
6069                         P2P_MAX_INITIAL_CONN_WAIT);
6070                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
6071                                        wpas_p2p_group_formation_timeout,
6072                                        wpa_s->parent, NULL);
6073         } else if (ssid) {
6074                 /*
6075                  * Use a separate timeout for initial data connection to
6076                  * complete to allow the group to be removed automatically if
6077                  * the client does not complete data connection successfully.
6078                  */
6079                 wpa_dbg(wpa_s, MSG_DEBUG,
6080                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
6081                         P2P_MAX_INITIAL_CONN_WAIT_GO);
6082                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
6083                                        wpas_p2p_group_formation_timeout,
6084                                        wpa_s->parent, NULL);
6085                 /*
6086                  * Complete group formation on first successful data connection
6087                  */
6088                 wpa_s->p2p_go_group_formation_completed = 0;
6089         }
6090         if (wpa_s->global->p2p)
6091                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
6092         wpas_group_formation_completed(wpa_s, 1, 0);
6093 }
6094
6095
6096 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
6097                          struct wps_event_fail *fail)
6098 {
6099         if (!wpa_s->p2p_in_provisioning) {
6100                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
6101                            "provisioning not in progress");
6102                 return;
6103         }
6104
6105         if (wpa_s->go_params) {
6106                 p2p_clear_provisioning_info(
6107                         wpa_s->global->p2p,
6108                         wpa_s->go_params->peer_device_addr);
6109         }
6110
6111         wpas_notify_p2p_wps_failed(wpa_s, fail);
6112
6113         if (wpa_s == wpa_s->global->p2p_group_formation) {
6114                 /*
6115                  * Allow some time for the failed WPS negotiation exchange to
6116                  * complete, but remove the group since group formation cannot
6117                  * succeed after provisioning failure.
6118                  */
6119                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
6120                 wpa_s->global->p2p_fail_on_wps_complete = 1;
6121                 eloop_deplete_timeout(0, 50000,
6122                                       wpas_p2p_group_formation_timeout,
6123                                       wpa_s->parent, NULL);
6124         }
6125 }
6126
6127
6128 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
6129 {
6130         if (!wpa_s->global->p2p_fail_on_wps_complete ||
6131             !wpa_s->p2p_in_provisioning)
6132                 return 0;
6133
6134         wpas_p2p_grpform_fail_after_wps(wpa_s);
6135
6136         return 1;
6137 }
6138
6139
6140 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6141                        const char *config_method,
6142                        enum wpas_p2p_prov_disc_use use,
6143                        struct p2ps_provision *p2ps_prov)
6144 {
6145         u16 config_methods;
6146
6147         wpa_s->global->pending_p2ps_group = 0;
6148         wpa_s->p2p_fallback_to_go_neg = 0;
6149         wpa_s->pending_pd_use = NORMAL_PD;
6150         if (p2ps_prov && use == WPAS_P2P_PD_FOR_ASP) {
6151                 p2ps_prov->conncap = p2ps_group_capability(
6152                         wpa_s, P2PS_SETUP_NONE, p2ps_prov->role);
6153                 wpa_printf(MSG_DEBUG,
6154                            "P2P: %s conncap: %d - ASP parsed: %x %x %d %s",
6155                            __func__, p2ps_prov->conncap,
6156                            p2ps_prov->adv_id, p2ps_prov->conncap,
6157                            p2ps_prov->status, p2ps_prov->info);
6158
6159                 config_methods = 0;
6160         } else if (os_strncmp(config_method, "display", 7) == 0)
6161                 config_methods = WPS_CONFIG_DISPLAY;
6162         else if (os_strncmp(config_method, "keypad", 6) == 0)
6163                 config_methods = WPS_CONFIG_KEYPAD;
6164         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
6165                  os_strncmp(config_method, "pushbutton", 10) == 0)
6166                 config_methods = WPS_CONFIG_PUSHBUTTON;
6167         else {
6168                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
6169                 os_free(p2ps_prov);
6170                 return -1;
6171         }
6172
6173         if (use == WPAS_P2P_PD_AUTO) {
6174                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
6175                 wpa_s->pending_pd_config_methods = config_methods;
6176                 wpa_s->p2p_auto_pd = 1;
6177                 wpa_s->p2p_auto_join = 0;
6178                 wpa_s->pending_pd_before_join = 0;
6179                 wpa_s->auto_pd_scan_retry = 0;
6180                 wpas_p2p_stop_find(wpa_s);
6181                 wpa_s->p2p_join_scan_count = 0;
6182                 os_get_reltime(&wpa_s->p2p_auto_started);
6183                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
6184                            wpa_s->p2p_auto_started.sec,
6185                            wpa_s->p2p_auto_started.usec);
6186                 wpas_p2p_join_scan(wpa_s, NULL);
6187                 return 0;
6188         }
6189
6190         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled) {
6191                 os_free(p2ps_prov);
6192                 return -1;
6193         }
6194
6195         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr, p2ps_prov,
6196                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
6197                                  0, 1);
6198 }
6199
6200
6201 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
6202                               char *end)
6203 {
6204         return p2p_scan_result_text(ies, ies_len, buf, end);
6205 }
6206
6207
6208 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
6209 {
6210         if (!offchannel_pending_action_tx(wpa_s))
6211                 return;
6212
6213         wpas_p2p_action_tx_clear(wpa_s);
6214
6215         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
6216                    "operation request");
6217         offchannel_clear_pending_action_tx(wpa_s);
6218 }
6219
6220
6221 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
6222                   enum p2p_discovery_type type,
6223                   unsigned int num_req_dev_types, const u8 *req_dev_types,
6224                   const u8 *dev_id, unsigned int search_delay,
6225                   u8 seek_cnt, const char **seek_string, int freq)
6226 {
6227         wpas_p2p_clear_pending_action_tx(wpa_s);
6228         wpa_s->p2p_long_listen = 0;
6229
6230         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
6231             wpa_s->p2p_in_provisioning)
6232                 return -1;
6233
6234         wpa_supplicant_cancel_sched_scan(wpa_s);
6235
6236         return p2p_find(wpa_s->global->p2p, timeout, type,
6237                         num_req_dev_types, req_dev_types, dev_id,
6238                         search_delay, seek_cnt, seek_string, freq);
6239 }
6240
6241
6242 static void wpas_p2p_scan_res_ignore_search(struct wpa_supplicant *wpa_s,
6243                                             struct wpa_scan_results *scan_res)
6244 {
6245         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6246
6247         if (wpa_s->p2p_scan_work) {
6248                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
6249                 wpa_s->p2p_scan_work = NULL;
6250                 radio_work_done(work);
6251         }
6252
6253         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6254                 return;
6255
6256         /*
6257          * Indicate that results have been processed so that the P2P module can
6258          * continue pending tasks.
6259          */
6260         p2p_scan_res_handled(wpa_s->global->p2p);
6261 }
6262
6263
6264 static void wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
6265 {
6266         wpas_p2p_clear_pending_action_tx(wpa_s);
6267         wpa_s->p2p_long_listen = 0;
6268         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6269         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
6270
6271         if (wpa_s->global->p2p)
6272                 p2p_stop_find(wpa_s->global->p2p);
6273
6274         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_handler) {
6275                 wpa_printf(MSG_DEBUG,
6276                            "P2P: Do not consider the scan results after stop_find");
6277                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore_search;
6278         }
6279 }
6280
6281
6282 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
6283 {
6284         wpas_p2p_stop_find_oper(wpa_s);
6285         if (!wpa_s->global->pending_group_iface_for_p2ps)
6286                 wpas_p2p_remove_pending_group_interface(wpa_s);
6287 }
6288
6289
6290 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
6291 {
6292         struct wpa_supplicant *wpa_s = eloop_ctx;
6293         wpa_s->p2p_long_listen = 0;
6294 }
6295
6296
6297 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
6298 {
6299         int res;
6300
6301         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6302                 return -1;
6303
6304         wpa_supplicant_cancel_sched_scan(wpa_s);
6305         wpas_p2p_clear_pending_action_tx(wpa_s);
6306
6307         if (timeout == 0) {
6308                 /*
6309                  * This is a request for unlimited Listen state. However, at
6310                  * least for now, this is mapped to a Listen state for one
6311                  * hour.
6312                  */
6313                 timeout = 3600;
6314         }
6315         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
6316         wpa_s->p2p_long_listen = 0;
6317
6318         /*
6319          * Stop previous find/listen operation to avoid trying to request a new
6320          * remain-on-channel operation while the driver is still running the
6321          * previous one.
6322          */
6323         if (wpa_s->global->p2p)
6324                 p2p_stop_find(wpa_s->global->p2p);
6325
6326         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
6327         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
6328                 wpa_s->p2p_long_listen = timeout * 1000;
6329                 eloop_register_timeout(timeout, 0,
6330                                        wpas_p2p_long_listen_timeout,
6331                                        wpa_s, NULL);
6332         }
6333
6334         return res;
6335 }
6336
6337
6338 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
6339                           u8 *buf, size_t len, int p2p_group)
6340 {
6341         struct wpabuf *p2p_ie;
6342         int ret;
6343
6344         if (wpa_s->global->p2p_disabled)
6345                 return -1;
6346         /*
6347          * Advertize mandatory cross connection capability even on
6348          * p2p_disabled=1 interface when associating with a P2P Manager WLAN AP.
6349          */
6350         if (wpa_s->conf->p2p_disabled && p2p_group)
6351                 return -1;
6352         if (wpa_s->global->p2p == NULL)
6353                 return -1;
6354         if (bss == NULL)
6355                 return -1;
6356
6357         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
6358         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
6359                                p2p_group, p2p_ie);
6360         wpabuf_free(p2p_ie);
6361
6362         return ret;
6363 }
6364
6365
6366 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
6367                           const u8 *dst, const u8 *bssid,
6368                           const u8 *ie, size_t ie_len,
6369                           unsigned int rx_freq, int ssi_signal)
6370 {
6371         if (wpa_s->global->p2p_disabled)
6372                 return 0;
6373         if (wpa_s->global->p2p == NULL)
6374                 return 0;
6375
6376         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
6377                                  ie, ie_len, rx_freq)) {
6378         case P2P_PREQ_NOT_P2P:
6379                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
6380                                  ssi_signal);
6381                 /* fall through */
6382         case P2P_PREQ_MALFORMED:
6383         case P2P_PREQ_NOT_LISTEN:
6384         case P2P_PREQ_NOT_PROCESSED:
6385         default: /* make gcc happy */
6386                 return 0;
6387         case P2P_PREQ_PROCESSED:
6388                 return 1;
6389         }
6390 }
6391
6392
6393 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
6394                         const u8 *sa, const u8 *bssid,
6395                         u8 category, const u8 *data, size_t len, int freq)
6396 {
6397         if (wpa_s->global->p2p_disabled)
6398                 return;
6399         if (wpa_s->global->p2p == NULL)
6400                 return;
6401
6402         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
6403                       freq);
6404 }
6405
6406
6407 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
6408 {
6409         if (wpa_s->global->p2p_disabled)
6410                 return;
6411         if (wpa_s->global->p2p == NULL)
6412                 return;
6413
6414         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
6415 }
6416
6417
6418 static void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
6419 {
6420         p2p_group_deinit(wpa_s->p2p_group);
6421         wpa_s->p2p_group = NULL;
6422
6423         wpa_s->ap_configured_cb = NULL;
6424         wpa_s->ap_configured_cb_ctx = NULL;
6425         wpa_s->ap_configured_cb_data = NULL;
6426         wpa_s->connect_without_scan = NULL;
6427 }
6428
6429
6430 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
6431 {
6432         wpa_s->p2p_long_listen = 0;
6433
6434         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6435                 return -1;
6436
6437         return p2p_reject(wpa_s->global->p2p, addr);
6438 }
6439
6440
6441 /* Invite to reinvoke a persistent group */
6442 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
6443                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
6444                     int ht40, int vht, int pref_freq)
6445 {
6446         enum p2p_invite_role role;
6447         u8 *bssid = NULL;
6448         int force_freq = 0;
6449         int res;
6450         int no_pref_freq_given = pref_freq == 0;
6451         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6452
6453         wpa_s->global->p2p_invite_group = NULL;
6454         if (peer_addr)
6455                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
6456         else
6457                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
6458
6459         wpa_s->p2p_persistent_go_freq = freq;
6460         wpa_s->p2p_go_ht40 = !!ht40;
6461         if (ssid->mode == WPAS_MODE_P2P_GO) {
6462                 role = P2P_INVITE_ROLE_GO;
6463                 if (peer_addr == NULL) {
6464                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
6465                                    "address in invitation command");
6466                         return -1;
6467                 }
6468                 if (wpas_p2p_create_iface(wpa_s)) {
6469                         if (wpas_p2p_add_group_interface(wpa_s,
6470                                                          WPA_IF_P2P_GO) < 0) {
6471                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
6472                                            "allocate a new interface for the "
6473                                            "group");
6474                                 return -1;
6475                         }
6476                         bssid = wpa_s->pending_interface_addr;
6477                 } else
6478                         bssid = wpa_s->own_addr;
6479         } else {
6480                 role = P2P_INVITE_ROLE_CLIENT;
6481                 peer_addr = ssid->bssid;
6482         }
6483         wpa_s->pending_invite_ssid_id = ssid->id;
6484
6485         size = P2P_MAX_PREF_CHANNELS;
6486         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6487                                    role == P2P_INVITE_ROLE_GO,
6488                                    pref_freq_list, &size);
6489         if (res)
6490                 return res;
6491
6492         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6493                 return -1;
6494
6495         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
6496             no_pref_freq_given && pref_freq > 0 &&
6497             wpa_s->num_multichan_concurrent > 1 &&
6498             wpas_p2p_num_unused_channels(wpa_s) > 0) {
6499                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
6500                            pref_freq);
6501                 pref_freq = 0;
6502         }
6503
6504         /*
6505          * Stop any find/listen operations before invitation and possibly
6506          * connection establishment.
6507          */
6508         wpas_p2p_stop_find_oper(wpa_s);
6509
6510         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6511                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
6512                           1, pref_freq, -1);
6513 }
6514
6515
6516 /* Invite to join an active group */
6517 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
6518                           const u8 *peer_addr, const u8 *go_dev_addr)
6519 {
6520         struct wpa_global *global = wpa_s->global;
6521         enum p2p_invite_role role;
6522         u8 *bssid = NULL;
6523         struct wpa_ssid *ssid;
6524         int persistent;
6525         int freq = 0, force_freq = 0, pref_freq = 0;
6526         int res;
6527         unsigned int pref_freq_list[P2P_MAX_PREF_CHANNELS], size;
6528
6529         wpa_s->p2p_persistent_go_freq = 0;
6530         wpa_s->p2p_go_ht40 = 0;
6531         wpa_s->p2p_go_vht = 0;
6532
6533         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6534                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
6535                         break;
6536         }
6537         if (wpa_s == NULL) {
6538                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
6539                 return -1;
6540         }
6541
6542         ssid = wpa_s->current_ssid;
6543         if (ssid == NULL) {
6544                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
6545                            "invitation");
6546                 return -1;
6547         }
6548
6549         wpa_s->global->p2p_invite_group = wpa_s;
6550         persistent = ssid->p2p_persistent_group &&
6551                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
6552                                         ssid->ssid, ssid->ssid_len);
6553
6554         if (ssid->mode == WPAS_MODE_P2P_GO) {
6555                 role = P2P_INVITE_ROLE_ACTIVE_GO;
6556                 bssid = wpa_s->own_addr;
6557                 if (go_dev_addr == NULL)
6558                         go_dev_addr = wpa_s->global->p2p_dev_addr;
6559                 freq = ssid->frequency;
6560         } else {
6561                 role = P2P_INVITE_ROLE_CLIENT;
6562                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
6563                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
6564                                    "invite to current group");
6565                         return -1;
6566                 }
6567                 bssid = wpa_s->bssid;
6568                 if (go_dev_addr == NULL &&
6569                     !is_zero_ether_addr(wpa_s->go_dev_addr))
6570                         go_dev_addr = wpa_s->go_dev_addr;
6571                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6572                         (int) wpa_s->assoc_freq;
6573         }
6574         wpa_s->parent->pending_invite_ssid_id = -1;
6575
6576         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6577                 return -1;
6578
6579         size = P2P_MAX_PREF_CHANNELS;
6580         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
6581                                    role == P2P_INVITE_ROLE_ACTIVE_GO,
6582                                    pref_freq_list, &size);
6583         if (res)
6584                 return res;
6585         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
6586
6587         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
6588                           ssid->ssid, ssid->ssid_len, force_freq,
6589                           go_dev_addr, persistent, pref_freq, -1);
6590 }
6591
6592
6593 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
6594 {
6595         struct wpa_ssid *ssid = wpa_s->current_ssid;
6596         u8 go_dev_addr[ETH_ALEN];
6597         int network_id = -1;
6598         int persistent;
6599         int freq;
6600         u8 ip[3 * 4];
6601         char ip_addr[100];
6602
6603         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
6604                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6605                                      wpa_s->parent, NULL);
6606         }
6607
6608         if (!wpa_s->show_group_started || !ssid)
6609                 return;
6610
6611         wpa_s->show_group_started = 0;
6612
6613         os_memset(go_dev_addr, 0, ETH_ALEN);
6614         if (ssid->bssid_set)
6615                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
6616         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
6617                                                ssid->ssid_len);
6618         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
6619
6620         if (wpa_s->global->p2p_group_formation == wpa_s)
6621                 wpa_s->global->p2p_group_formation = NULL;
6622
6623         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
6624                 (int) wpa_s->assoc_freq;
6625
6626         ip_addr[0] = '\0';
6627         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
6628                 int res;
6629
6630                 res = os_snprintf(ip_addr, sizeof(ip_addr),
6631                                   " ip_addr=%u.%u.%u.%u "
6632                                   "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
6633                                   ip[0], ip[1], ip[2], ip[3],
6634                                   ip[4], ip[5], ip[6], ip[7],
6635                                   ip[8], ip[9], ip[10], ip[11]);
6636                 if (os_snprintf_error(sizeof(ip_addr), res))
6637                         ip_addr[0] = '\0';
6638         }
6639
6640         wpas_p2p_group_started(wpa_s, 0, ssid, freq,
6641                                ssid->passphrase == NULL && ssid->psk_set ?
6642                                ssid->psk : NULL,
6643                                ssid->passphrase, go_dev_addr, persistent,
6644                                ip_addr);
6645
6646         if (persistent)
6647                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
6648                                                              ssid, go_dev_addr);
6649         if (network_id < 0)
6650                 network_id = ssid->id;
6651         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
6652 }
6653
6654
6655 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
6656                           u32 interval1, u32 duration2, u32 interval2)
6657 {
6658         int ret;
6659
6660         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6661                 return -1;
6662
6663         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
6664             wpa_s->current_ssid == NULL ||
6665             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
6666                 return -1;
6667
6668         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
6669                                wpa_s->own_addr, wpa_s->assoc_freq,
6670                                duration1, interval1, duration2, interval2);
6671         if (ret == 0)
6672                 wpa_s->waiting_presence_resp = 1;
6673
6674         return ret;
6675 }
6676
6677
6678 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
6679                         unsigned int interval)
6680 {
6681         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6682                 return -1;
6683
6684         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
6685 }
6686
6687
6688 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
6689 {
6690         if (wpa_s->current_ssid == NULL) {
6691                 /*
6692                  * current_ssid can be cleared when P2P client interface gets
6693                  * disconnected, so assume this interface was used as P2P
6694                  * client.
6695                  */
6696                 return 1;
6697         }
6698         return wpa_s->current_ssid->p2p_group &&
6699                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
6700 }
6701
6702
6703 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6704 {
6705         struct wpa_supplicant *wpa_s = eloop_ctx;
6706
6707         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6708                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6709                            "disabled");
6710                 return;
6711         }
6712
6713         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6714                    "group");
6715         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6716 }
6717
6718
6719 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6720 {
6721         int timeout;
6722
6723         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6724                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6725
6726         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6727                 return;
6728
6729         timeout = wpa_s->conf->p2p_group_idle;
6730         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6731             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6732             timeout = P2P_MAX_CLIENT_IDLE;
6733
6734         if (timeout == 0)
6735                 return;
6736
6737         if (timeout < 0) {
6738                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6739                         timeout = 0; /* special client mode no-timeout */
6740                 else
6741                         return;
6742         }
6743
6744         if (wpa_s->p2p_in_provisioning) {
6745                 /*
6746                  * Use the normal group formation timeout during the
6747                  * provisioning phase to avoid terminating this process too
6748                  * early due to group idle timeout.
6749                  */
6750                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6751                            "during provisioning");
6752                 return;
6753         }
6754
6755         if (wpa_s->show_group_started) {
6756                 /*
6757                  * Use the normal group formation timeout between the end of
6758                  * the provisioning phase and completion of 4-way handshake to
6759                  * avoid terminating this process too early due to group idle
6760                  * timeout.
6761                  */
6762                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6763                            "while waiting for initial 4-way handshake to "
6764                            "complete");
6765                 return;
6766         }
6767
6768         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6769                    timeout);
6770         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6771                                wpa_s, NULL);
6772 }
6773
6774
6775 /* Returns 1 if the interface was removed */
6776 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6777                           u16 reason_code, const u8 *ie, size_t ie_len,
6778                           int locally_generated)
6779 {
6780         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6781                 return 0;
6782
6783         if (!locally_generated)
6784                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6785                                  ie_len);
6786
6787         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6788             wpa_s->current_ssid &&
6789             wpa_s->current_ssid->p2p_group &&
6790             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6791                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6792                            "session is ending");
6793                 if (wpas_p2p_group_delete(wpa_s,
6794                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6795                     > 0)
6796                         return 1;
6797         }
6798
6799         return 0;
6800 }
6801
6802
6803 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6804                              u16 reason_code, const u8 *ie, size_t ie_len,
6805                              int locally_generated)
6806 {
6807         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6808                 return;
6809
6810         if (!locally_generated)
6811                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6812                                    ie_len);
6813 }
6814
6815
6816 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6817 {
6818         struct p2p_data *p2p = wpa_s->global->p2p;
6819
6820         if (p2p == NULL)
6821                 return;
6822
6823         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6824                 return;
6825
6826         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6827                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6828
6829         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6830                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6831
6832         if (wpa_s->wps &&
6833             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6834                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6835
6836         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6837                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6838
6839         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6840                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6841                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6842                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6843                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6844         }
6845
6846         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6847                 p2p_set_sec_dev_types(p2p,
6848                                       (void *) wpa_s->conf->sec_device_type,
6849                                       wpa_s->conf->num_sec_device_types);
6850
6851         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6852                 int i;
6853                 p2p_remove_wps_vendor_extensions(p2p);
6854                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6855                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6856                                 continue;
6857                         p2p_add_wps_vendor_extension(
6858                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
6859                 }
6860         }
6861
6862         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6863             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6864                 char country[3];
6865                 country[0] = wpa_s->conf->country[0];
6866                 country[1] = wpa_s->conf->country[1];
6867                 country[2] = 0x04;
6868                 p2p_set_country(p2p, country);
6869         }
6870
6871         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6872                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6873                                      wpa_s->conf->p2p_ssid_postfix ?
6874                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6875                                      0);
6876         }
6877
6878         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6879                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6880
6881         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6882                 u8 reg_class, channel;
6883                 int ret;
6884                 unsigned int r;
6885                 u8 channel_forced;
6886
6887                 if (wpa_s->conf->p2p_listen_reg_class &&
6888                     wpa_s->conf->p2p_listen_channel) {
6889                         reg_class = wpa_s->conf->p2p_listen_reg_class;
6890                         channel = wpa_s->conf->p2p_listen_channel;
6891                         channel_forced = 1;
6892                 } else {
6893                         reg_class = 81;
6894                         /*
6895                          * Pick one of the social channels randomly as the
6896                          * listen channel.
6897                          */
6898                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6899                                 channel = 1;
6900                         else
6901                                 channel = 1 + (r % 3) * 5;
6902                         channel_forced = 0;
6903                 }
6904                 ret = p2p_set_listen_channel(p2p, reg_class, channel,
6905                                              channel_forced);
6906                 if (ret)
6907                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6908                                    "failed: %d", ret);
6909         }
6910         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6911                 u8 op_reg_class, op_channel, cfg_op_channel;
6912                 int ret = 0;
6913                 unsigned int r;
6914                 if (wpa_s->conf->p2p_oper_reg_class &&
6915                     wpa_s->conf->p2p_oper_channel) {
6916                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6917                         op_channel = wpa_s->conf->p2p_oper_channel;
6918                         cfg_op_channel = 1;
6919                 } else {
6920                         op_reg_class = 81;
6921                         /*
6922                          * Use random operation channel from (1, 6, 11)
6923                          *if no other preference is indicated.
6924                          */
6925                         if (os_get_random((u8 *) &r, sizeof(r)) < 0)
6926                                 op_channel = 1;
6927                         else
6928                                 op_channel = 1 + (r % 3) * 5;
6929                         cfg_op_channel = 0;
6930                 }
6931                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6932                                            cfg_op_channel);
6933                 if (ret)
6934                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6935                                    "failed: %d", ret);
6936         }
6937
6938         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6939                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6940                                       wpa_s->conf->p2p_pref_chan) < 0) {
6941                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6942                                    "update failed");
6943                 }
6944
6945                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6946                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6947                                    "update failed");
6948                 }
6949         }
6950
6951         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PASSPHRASE_LEN)
6952                 p2p_set_passphrase_len(p2p, wpa_s->conf->p2p_passphrase_len);
6953 }
6954
6955
6956 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6957                      int duration)
6958 {
6959         if (!wpa_s->ap_iface)
6960                 return -1;
6961         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6962                                    duration);
6963 }
6964
6965
6966 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6967 {
6968         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6969                 return -1;
6970
6971         wpa_s->global->cross_connection = enabled;
6972         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6973
6974         if (!enabled) {
6975                 struct wpa_supplicant *iface;
6976
6977                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6978                 {
6979                         if (iface->cross_connect_enabled == 0)
6980                                 continue;
6981
6982                         iface->cross_connect_enabled = 0;
6983                         iface->cross_connect_in_use = 0;
6984                         wpa_msg_global(iface->parent, MSG_INFO,
6985                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6986                                        iface->ifname,
6987                                        iface->cross_connect_uplink);
6988                 }
6989         }
6990
6991         return 0;
6992 }
6993
6994
6995 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6996 {
6997         struct wpa_supplicant *iface;
6998
6999         if (!uplink->global->cross_connection)
7000                 return;
7001
7002         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7003                 if (!iface->cross_connect_enabled)
7004                         continue;
7005                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7006                     0)
7007                         continue;
7008                 if (iface->ap_iface == NULL)
7009                         continue;
7010                 if (iface->cross_connect_in_use)
7011                         continue;
7012
7013                 iface->cross_connect_in_use = 1;
7014                 wpa_msg_global(iface->parent, MSG_INFO,
7015                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7016                                iface->ifname, iface->cross_connect_uplink);
7017         }
7018 }
7019
7020
7021 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
7022 {
7023         struct wpa_supplicant *iface;
7024
7025         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
7026                 if (!iface->cross_connect_enabled)
7027                         continue;
7028                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
7029                     0)
7030                         continue;
7031                 if (!iface->cross_connect_in_use)
7032                         continue;
7033
7034                 wpa_msg_global(iface->parent, MSG_INFO,
7035                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
7036                                iface->ifname, iface->cross_connect_uplink);
7037                 iface->cross_connect_in_use = 0;
7038         }
7039 }
7040
7041
7042 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
7043 {
7044         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
7045             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
7046             wpa_s->cross_connect_disallowed)
7047                 wpas_p2p_disable_cross_connect(wpa_s);
7048         else
7049                 wpas_p2p_enable_cross_connect(wpa_s);
7050         if (!wpa_s->ap_iface &&
7051             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
7052                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
7053 }
7054
7055
7056 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
7057 {
7058         wpas_p2p_disable_cross_connect(wpa_s);
7059         if (!wpa_s->ap_iface &&
7060             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
7061                                          wpa_s, NULL))
7062                 wpas_p2p_set_group_idle_timeout(wpa_s);
7063 }
7064
7065
7066 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
7067 {
7068         struct wpa_supplicant *iface;
7069
7070         if (!wpa_s->global->cross_connection)
7071                 return;
7072
7073         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7074                 if (iface == wpa_s)
7075                         continue;
7076                 if (iface->drv_flags &
7077                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
7078                         continue;
7079                 if ((iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE) &&
7080                     iface != wpa_s->parent)
7081                         continue;
7082
7083                 wpa_s->cross_connect_enabled = 1;
7084                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
7085                            sizeof(wpa_s->cross_connect_uplink));
7086                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
7087                            "%s to %s whenever uplink is available",
7088                            wpa_s->ifname, wpa_s->cross_connect_uplink);
7089
7090                 if (iface->ap_iface || iface->current_ssid == NULL ||
7091                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
7092                     iface->cross_connect_disallowed ||
7093                     iface->wpa_state != WPA_COMPLETED)
7094                         break;
7095
7096                 wpa_s->cross_connect_in_use = 1;
7097                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7098                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
7099                                wpa_s->ifname, wpa_s->cross_connect_uplink);
7100                 break;
7101         }
7102 }
7103
7104
7105 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
7106 {
7107         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
7108             !wpa_s->p2p_in_provisioning)
7109                 return 0; /* not P2P client operation */
7110
7111         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
7112                    "session overlap");
7113         if (wpa_s != wpa_s->parent)
7114                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
7115         wpas_p2p_group_formation_failed(wpa_s, 0);
7116         return 1;
7117 }
7118
7119
7120 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
7121 {
7122         struct wpa_supplicant *wpa_s = eloop_ctx;
7123         wpas_p2p_notif_pbc_overlap(wpa_s);
7124 }
7125
7126
7127 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s,
7128                                   enum wpas_p2p_channel_update_trig trig)
7129 {
7130         struct p2p_channels chan, cli_chan;
7131         struct wpa_used_freq_data *freqs = NULL;
7132         unsigned int num = wpa_s->num_multichan_concurrent;
7133
7134         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
7135                 return;
7136
7137         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
7138         if (!freqs)
7139                 return;
7140
7141         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
7142
7143         os_memset(&chan, 0, sizeof(chan));
7144         os_memset(&cli_chan, 0, sizeof(cli_chan));
7145         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
7146                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
7147                            "channel list");
7148                 return;
7149         }
7150
7151         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
7152
7153         wpas_p2p_optimize_listen_channel(wpa_s, freqs, num);
7154
7155         /*
7156          * The used frequencies map changed, so it is possible that a GO is
7157          * using a channel that is no longer valid for P2P use. It is also
7158          * possible that due to policy consideration, it would be preferable to
7159          * move it to a frequency already used by other station interfaces.
7160          */
7161         wpas_p2p_consider_moving_gos(wpa_s, freqs, num, trig);
7162
7163         os_free(freqs);
7164 }
7165
7166
7167 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
7168                                      struct wpa_scan_results *scan_res)
7169 {
7170         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
7171 }
7172
7173
7174 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
7175 {
7176         struct wpa_global *global = wpa_s->global;
7177         int found = 0;
7178         const u8 *peer;
7179
7180         if (global->p2p == NULL)
7181                 return -1;
7182
7183         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
7184
7185         if (wpa_s->pending_interface_name[0] &&
7186             !is_zero_ether_addr(wpa_s->pending_interface_addr))
7187                 found = 1;
7188
7189         peer = p2p_get_go_neg_peer(global->p2p);
7190         if (peer) {
7191                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
7192                            MACSTR, MAC2STR(peer));
7193                 p2p_unauthorize(global->p2p, peer);
7194                 found = 1;
7195         }
7196
7197         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
7198                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
7199                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
7200                 found = 1;
7201         }
7202
7203         if (wpa_s->pending_pd_before_join) {
7204                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
7205                 wpa_s->pending_pd_before_join = 0;
7206                 found = 1;
7207         }
7208
7209         wpas_p2p_stop_find(wpa_s);
7210
7211         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7212                 if (wpa_s == global->p2p_group_formation &&
7213                     (wpa_s->p2p_in_provisioning ||
7214                      wpa_s->parent->pending_interface_type ==
7215                      WPA_IF_P2P_CLIENT)) {
7216                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
7217                                    "formation found - cancelling",
7218                                    wpa_s->ifname);
7219                         found = 1;
7220                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7221                                              wpa_s->parent, NULL);
7222                         if (wpa_s->p2p_in_provisioning) {
7223                                 wpas_group_formation_completed(wpa_s, 0, 0);
7224                                 break;
7225                         }
7226                         wpas_p2p_group_delete(wpa_s,
7227                                               P2P_GROUP_REMOVAL_REQUESTED);
7228                         break;
7229                 } else if (wpa_s->p2p_in_invitation) {
7230                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
7231                                    wpa_s->ifname);
7232                         found = 1;
7233                         wpas_p2p_group_formation_failed(wpa_s, 0);
7234                 }
7235         }
7236
7237         if (!found) {
7238                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
7239                 return -1;
7240         }
7241
7242         return 0;
7243 }
7244
7245
7246 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
7247 {
7248         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
7249                 return;
7250
7251         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
7252                    "being available anymore");
7253         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
7254 }
7255
7256
7257 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
7258                                    int freq_24, int freq_5, int freq_overall)
7259 {
7260         struct p2p_data *p2p = wpa_s->global->p2p;
7261         if (p2p == NULL)
7262                 return;
7263         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
7264 }
7265
7266
7267 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
7268 {
7269         u8 peer[ETH_ALEN];
7270         struct p2p_data *p2p = wpa_s->global->p2p;
7271
7272         if (p2p == NULL)
7273                 return -1;
7274
7275         if (hwaddr_aton(addr, peer))
7276                 return -1;
7277
7278         return p2p_unauthorize(p2p, peer);
7279 }
7280
7281
7282 /**
7283  * wpas_p2p_disconnect - Disconnect from a P2P Group
7284  * @wpa_s: Pointer to wpa_supplicant data
7285  * Returns: 0 on success, -1 on failure
7286  *
7287  * This can be used to disconnect from a group in which the local end is a P2P
7288  * Client or to end a P2P Group in case the local end is the Group Owner. If a
7289  * virtual network interface was created for this group, that interface will be
7290  * removed. Otherwise, only the configured P2P group network will be removed
7291  * from the interface.
7292  */
7293 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
7294 {
7295
7296         if (wpa_s == NULL)
7297                 return -1;
7298
7299         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
7300                 -1 : 0;
7301 }
7302
7303
7304 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
7305 {
7306         int ret;
7307
7308         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7309                 return 0;
7310
7311         ret = p2p_in_progress(wpa_s->global->p2p);
7312         if (ret == 0) {
7313                 /*
7314                  * Check whether there is an ongoing WPS provisioning step (or
7315                  * other parts of group formation) on another interface since
7316                  * p2p_in_progress() does not report this to avoid issues for
7317                  * scans during such provisioning step.
7318                  */
7319                 if (wpa_s->global->p2p_group_formation &&
7320                     wpa_s->global->p2p_group_formation != wpa_s) {
7321                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
7322                                 "in group formation",
7323                                 wpa_s->global->p2p_group_formation->ifname);
7324                         ret = 1;
7325                 }
7326         }
7327
7328         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
7329                 struct os_reltime now;
7330                 os_get_reltime(&now);
7331                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
7332                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
7333                         /* Wait for the first client has expired */
7334                         wpa_s->global->p2p_go_wait_client.sec = 0;
7335                 } else {
7336                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
7337                         ret = 1;
7338                 }
7339         }
7340
7341         return ret;
7342 }
7343
7344
7345 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
7346                               struct wpa_ssid *ssid)
7347 {
7348         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
7349             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7350                                  wpa_s->parent, NULL) > 0) {
7351                 /**
7352                  * Remove the network by scheduling the group formation
7353                  * timeout to happen immediately. The teardown code
7354                  * needs to be scheduled to run asynch later so that we
7355                  * don't delete data from under ourselves unexpectedly.
7356                  * Calling wpas_p2p_group_formation_timeout directly
7357                  * causes a series of crashes in WPS failure scenarios.
7358                  */
7359                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
7360                            "P2P group network getting removed");
7361                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
7362                                        wpa_s->parent, NULL);
7363         }
7364 }
7365
7366
7367 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
7368                                           const u8 *addr, const u8 *ssid,
7369                                           size_t ssid_len)
7370 {
7371         struct wpa_ssid *s;
7372         size_t i;
7373
7374         for (s = wpa_s->conf->ssid; s; s = s->next) {
7375                 if (s->disabled != 2)
7376                         continue;
7377                 if (ssid &&
7378                     (ssid_len != s->ssid_len ||
7379                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
7380                         continue;
7381                 if (addr == NULL) {
7382                         if (s->mode == WPAS_MODE_P2P_GO)
7383                                 return s;
7384                         continue;
7385                 }
7386                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
7387                         return s; /* peer is GO in the persistent group */
7388                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
7389                         continue;
7390                 for (i = 0; i < s->num_p2p_clients; i++) {
7391                         if (os_memcmp(s->p2p_client_list + i * 2 * ETH_ALEN,
7392                                       addr, ETH_ALEN) == 0)
7393                                 return s; /* peer is P2P client in persistent
7394                                            * group */
7395                 }
7396         }
7397
7398         return NULL;
7399 }
7400
7401
7402 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
7403                                        const u8 *addr)
7404 {
7405         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
7406                                  wpa_s->parent, NULL) > 0) {
7407                 /*
7408                  * This can happen if WPS provisioning step is not terminated
7409                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
7410                  * peer was able to connect, there is no need to time out group
7411                  * formation after this, though. In addition, this is used with
7412                  * the initial connection wait on the GO as a separate formation
7413                  * timeout and as such, expected to be hit after the initial WPS
7414                  * provisioning step.
7415                  */
7416                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
7417
7418                 if (!wpa_s->p2p_go_group_formation_completed &&
7419                     !wpa_s->group_formation_reported) {
7420                         /*
7421                          * GO has not yet notified group formation success since
7422                          * the WPS step was not completed cleanly. Do that
7423                          * notification now since the P2P Client was able to
7424                          * connect and as such, must have received the
7425                          * credential from the WPS step.
7426                          */
7427                         if (wpa_s->global->p2p)
7428                                 p2p_wps_success_cb(wpa_s->global->p2p, addr);
7429                         wpas_group_formation_completed(wpa_s, 1, 0);
7430                 }
7431         }
7432         if (!wpa_s->p2p_go_group_formation_completed) {
7433                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
7434                 wpa_s->p2p_go_group_formation_completed = 1;
7435                 wpa_s->global->p2p_group_formation = NULL;
7436                 wpa_s->p2p_in_provisioning = 0;
7437                 wpa_s->p2p_in_invitation = 0;
7438         }
7439         wpa_s->global->p2p_go_wait_client.sec = 0;
7440         if (addr == NULL)
7441                 return;
7442         wpas_p2p_add_persistent_group_client(wpa_s, addr);
7443 }
7444
7445
7446 static int wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
7447                                        int group_added)
7448 {
7449         struct wpa_supplicant *group = wpa_s;
7450         int ret = 0;
7451
7452         if (wpa_s->global->p2p_group_formation)
7453                 group = wpa_s->global->p2p_group_formation;
7454         wpa_s = wpa_s->global->p2p_init_wpa_s;
7455         offchannel_send_action_done(wpa_s);
7456         if (group_added)
7457                 ret = wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
7458         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
7459         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
7460                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
7461                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
7462                          wpa_s->p2p_persistent_id,
7463                          wpa_s->p2p_pd_before_go_neg,
7464                          wpa_s->p2p_go_ht40,
7465                          wpa_s->p2p_go_vht);
7466         return ret;
7467 }
7468
7469
7470 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
7471 {
7472         int res;
7473
7474         if (!wpa_s->p2p_fallback_to_go_neg ||
7475             wpa_s->p2p_in_provisioning <= 5)
7476                 return 0;
7477
7478         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
7479                 return 0; /* peer operating as a GO */
7480
7481         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
7482                 "fallback to GO Negotiation");
7483         wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_FALLBACK_TO_GO_NEG
7484                        "reason=GO-not-found");
7485         res = wpas_p2p_fallback_to_go_neg(wpa_s, 1);
7486
7487         return res == 1 ? 2 : 1;
7488 }
7489
7490
7491 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
7492 {
7493         struct wpa_supplicant *ifs;
7494
7495         if (wpa_s->wpa_state > WPA_SCANNING) {
7496                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
7497                         "concurrent operation",
7498                         wpa_s->conf->p2p_search_delay);
7499                 return wpa_s->conf->p2p_search_delay;
7500         }
7501
7502         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
7503                          radio_list) {
7504                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
7505                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
7506                                 "delay due to concurrent operation on "
7507                                 "interface %s",
7508                                 wpa_s->conf->p2p_search_delay,
7509                                 ifs->ifname);
7510                         return wpa_s->conf->p2p_search_delay;
7511                 }
7512         }
7513
7514         return 0;
7515 }
7516
7517
7518 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
7519                                      struct wpa_ssid *s, const u8 *addr,
7520                                      int iface_addr)
7521 {
7522         struct psk_list_entry *psk, *tmp;
7523         int changed = 0;
7524
7525         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
7526                               list) {
7527                 if ((iface_addr && !psk->p2p &&
7528                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
7529                     (!iface_addr && psk->p2p &&
7530                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
7531                         wpa_dbg(wpa_s, MSG_DEBUG,
7532                                 "P2P: Remove persistent group PSK list entry for "
7533                                 MACSTR " p2p=%u",
7534                                 MAC2STR(psk->addr), psk->p2p);
7535                         dl_list_del(&psk->list);
7536                         os_free(psk);
7537                         changed++;
7538                 }
7539         }
7540
7541         return changed;
7542 }
7543
7544
7545 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
7546                          const u8 *p2p_dev_addr,
7547                          const u8 *psk, size_t psk_len)
7548 {
7549         struct wpa_ssid *ssid = wpa_s->current_ssid;
7550         struct wpa_ssid *persistent;
7551         struct psk_list_entry *p, *last;
7552
7553         if (psk_len != sizeof(p->psk))
7554                 return;
7555
7556         if (p2p_dev_addr) {
7557                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
7558                         " p2p_dev_addr=" MACSTR,
7559                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
7560                 if (is_zero_ether_addr(p2p_dev_addr))
7561                         p2p_dev_addr = NULL;
7562         } else {
7563                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
7564                         MAC2STR(mac_addr));
7565         }
7566
7567         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
7568                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
7569                 /* To be added to persistent group once created */
7570                 if (wpa_s->global->add_psk == NULL) {
7571                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
7572                         if (wpa_s->global->add_psk == NULL)
7573                                 return;
7574                 }
7575                 p = wpa_s->global->add_psk;
7576                 if (p2p_dev_addr) {
7577                         p->p2p = 1;
7578                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7579                 } else {
7580                         p->p2p = 0;
7581                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
7582                 }
7583                 os_memcpy(p->psk, psk, psk_len);
7584                 return;
7585         }
7586
7587         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
7588                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
7589                 return;
7590         }
7591
7592         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
7593                                              ssid->ssid_len);
7594         if (!persistent) {
7595                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
7596                 return;
7597         }
7598
7599         p = os_zalloc(sizeof(*p));
7600         if (p == NULL)
7601                 return;
7602         if (p2p_dev_addr) {
7603                 p->p2p = 1;
7604                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
7605         } else {
7606                 p->p2p = 0;
7607                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
7608         }
7609         os_memcpy(p->psk, psk, psk_len);
7610
7611         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
7612             (last = dl_list_last(&persistent->psk_list,
7613                                  struct psk_list_entry, list))) {
7614                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
7615                         MACSTR " (p2p=%u) to make room for a new one",
7616                         MAC2STR(last->addr), last->p2p);
7617                 dl_list_del(&last->list);
7618                 os_free(last);
7619         }
7620
7621         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
7622                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
7623                                   p2p_dev_addr == NULL);
7624         if (p2p_dev_addr) {
7625                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
7626                         MACSTR, MAC2STR(p2p_dev_addr));
7627         } else {
7628                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
7629                         MAC2STR(mac_addr));
7630         }
7631         dl_list_add(&persistent->psk_list, &p->list);
7632
7633         if (wpa_s->parent->conf->update_config &&
7634             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
7635                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
7636 }
7637
7638
7639 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
7640                                 struct wpa_ssid *s, const u8 *addr,
7641                                 int iface_addr)
7642 {
7643         int res;
7644
7645         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
7646         if (res > 0 && wpa_s->conf->update_config &&
7647             wpa_config_write(wpa_s->confname, wpa_s->conf))
7648                 wpa_dbg(wpa_s, MSG_DEBUG,
7649                         "P2P: Failed to update configuration");
7650 }
7651
7652
7653 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
7654                                       const u8 *peer, int iface_addr)
7655 {
7656         struct hostapd_data *hapd;
7657         struct hostapd_wpa_psk *psk, *prev, *rem;
7658         struct sta_info *sta;
7659
7660         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
7661             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
7662                 return;
7663
7664         /* Remove per-station PSK entry */
7665         hapd = wpa_s->ap_iface->bss[0];
7666         prev = NULL;
7667         psk = hapd->conf->ssid.wpa_psk;
7668         while (psk) {
7669                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
7670                     (!iface_addr &&
7671                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
7672                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
7673                                 MACSTR " iface_addr=%d",
7674                                 MAC2STR(peer), iface_addr);
7675                         if (prev)
7676                                 prev->next = psk->next;
7677                         else
7678                                 hapd->conf->ssid.wpa_psk = psk->next;
7679                         rem = psk;
7680                         psk = psk->next;
7681                         os_free(rem);
7682                 } else {
7683                         prev = psk;
7684                         psk = psk->next;
7685                 }
7686         }
7687
7688         /* Disconnect from group */
7689         if (iface_addr)
7690                 sta = ap_get_sta(hapd, peer);
7691         else
7692                 sta = ap_get_sta_p2p(hapd, peer);
7693         if (sta) {
7694                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
7695                         " (iface_addr=%d) from group",
7696                         MAC2STR(peer), iface_addr);
7697                 hostapd_drv_sta_deauth(hapd, sta->addr,
7698                                        WLAN_REASON_DEAUTH_LEAVING);
7699                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
7700         }
7701 }
7702
7703
7704 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
7705                             int iface_addr)
7706 {
7707         struct wpa_ssid *s;
7708         struct wpa_supplicant *w;
7709         struct wpa_supplicant *p2p_wpa_s = wpa_s->global->p2p_init_wpa_s;
7710
7711         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
7712
7713         /* Remove from any persistent group */
7714         for (s = p2p_wpa_s->conf->ssid; s; s = s->next) {
7715                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
7716                         continue;
7717                 if (!iface_addr)
7718                         wpas_remove_persistent_peer(p2p_wpa_s, s, peer, 0);
7719                 wpas_p2p_remove_psk(p2p_wpa_s, s, peer, iface_addr);
7720         }
7721
7722         /* Remove from any operating group */
7723         for (w = wpa_s->global->ifaces; w; w = w->next)
7724                 wpas_p2p_remove_client_go(w, peer, iface_addr);
7725 }
7726
7727
7728 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
7729 {
7730         struct wpa_supplicant *wpa_s = eloop_ctx;
7731         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
7732 }
7733
7734
7735 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
7736 {
7737         struct wpa_supplicant *wpa_s = eloop_ctx;
7738
7739         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
7740         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
7741 }
7742
7743
7744 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
7745                                         struct wpa_ssid *ssid)
7746 {
7747         struct wpa_supplicant *iface;
7748
7749         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7750                 if (!iface->current_ssid ||
7751                     iface->current_ssid->frequency == freq ||
7752                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
7753                      !iface->current_ssid->p2p_group))
7754                         continue;
7755
7756                 /* Remove the connection with least priority */
7757                 if (!wpas_is_p2p_prioritized(iface)) {
7758                         /* STA connection has priority over existing
7759                          * P2P connection, so remove the interface. */
7760                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
7761                         eloop_register_timeout(0, 0,
7762                                                wpas_p2p_group_freq_conflict,
7763                                                iface, NULL);
7764                         /* If connection in progress is P2P connection, do not
7765                          * proceed for the connection. */
7766                         if (wpa_s == iface)
7767                                 return -1;
7768                         else
7769                                 return 0;
7770                 } else {
7771                         /* P2P connection has priority, disable the STA network
7772                          */
7773                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
7774                                                        ssid);
7775                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7776                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7777                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7778                                   ETH_ALEN);
7779                         /* If P2P connection is in progress, continue
7780                          * connecting...*/
7781                         if (wpa_s == iface)
7782                                 return 0;
7783                         else
7784                                 return -1;
7785                 }
7786         }
7787
7788         return 0;
7789 }
7790
7791
7792 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7793 {
7794         struct wpa_ssid *ssid = wpa_s->current_ssid;
7795
7796         if (ssid == NULL || !ssid->p2p_group)
7797                 return 0;
7798
7799         if (wpa_s->p2p_last_4way_hs_fail &&
7800             wpa_s->p2p_last_4way_hs_fail == ssid) {
7801                 u8 go_dev_addr[ETH_ALEN];
7802                 struct wpa_ssid *persistent;
7803
7804                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7805                                               ssid->ssid,
7806                                               ssid->ssid_len) <= 0) {
7807                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7808                         goto disconnect;
7809                 }
7810
7811                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7812                         MACSTR, MAC2STR(go_dev_addr));
7813                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7814                                                      ssid->ssid,
7815                                                      ssid->ssid_len);
7816                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7817                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7818                         goto disconnect;
7819                 }
7820                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7821                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7822                                persistent->id);
7823         disconnect:
7824                 wpa_s->p2p_last_4way_hs_fail = NULL;
7825                 /*
7826                  * Remove the group from a timeout to avoid issues with caller
7827                  * continuing to use the interface if this is on a P2P group
7828                  * interface.
7829                  */
7830                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7831                                        wpa_s, NULL);
7832                 return 1;
7833         }
7834
7835         wpa_s->p2p_last_4way_hs_fail = ssid;
7836         return 0;
7837 }
7838
7839
7840 #ifdef CONFIG_WPS_NFC
7841
7842 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7843                                              struct wpabuf *p2p)
7844 {
7845         struct wpabuf *ret;
7846         size_t wsc_len;
7847
7848         if (p2p == NULL) {
7849                 wpabuf_free(wsc);
7850                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7851                 return NULL;
7852         }
7853
7854         wsc_len = wsc ? wpabuf_len(wsc) : 0;
7855         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7856         if (ret == NULL) {
7857                 wpabuf_free(wsc);
7858                 wpabuf_free(p2p);
7859                 return NULL;
7860         }
7861
7862         wpabuf_put_be16(ret, wsc_len);
7863         if (wsc)
7864                 wpabuf_put_buf(ret, wsc);
7865         wpabuf_put_be16(ret, wpabuf_len(p2p));
7866         wpabuf_put_buf(ret, p2p);
7867
7868         wpabuf_free(wsc);
7869         wpabuf_free(p2p);
7870         wpa_hexdump_buf(MSG_DEBUG,
7871                         "P2P: Generated NFC connection handover message", ret);
7872
7873         if (ndef && ret) {
7874                 struct wpabuf *tmp;
7875                 tmp = ndef_build_p2p(ret);
7876                 wpabuf_free(ret);
7877                 if (tmp == NULL) {
7878                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7879                         return NULL;
7880                 }
7881                 ret = tmp;
7882         }
7883
7884         return ret;
7885 }
7886
7887
7888 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7889                              struct wpa_ssid **ssid, u8 *go_dev_addr)
7890 {
7891         struct wpa_supplicant *iface;
7892
7893         if (go_dev_addr)
7894                 os_memset(go_dev_addr, 0, ETH_ALEN);
7895         if (ssid)
7896                 *ssid = NULL;
7897         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7898                 if (iface->wpa_state < WPA_ASSOCIATING ||
7899                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7900                     !iface->current_ssid->p2p_group ||
7901                     iface->current_ssid->mode != WPAS_MODE_INFRA)
7902                         continue;
7903                 if (ssid)
7904                         *ssid = iface->current_ssid;
7905                 if (go_dev_addr)
7906                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7907                 return iface->assoc_freq;
7908         }
7909         return 0;
7910 }
7911
7912
7913 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7914                                           int ndef)
7915 {
7916         struct wpabuf *wsc, *p2p;
7917         struct wpa_ssid *ssid;
7918         u8 go_dev_addr[ETH_ALEN];
7919         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7920
7921         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7922                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7923                 return NULL;
7924         }
7925
7926         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7927             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7928                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7929                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7930                 return NULL;
7931         }
7932
7933         if (cli_freq == 0) {
7934                 wsc = wps_build_nfc_handover_req_p2p(
7935                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
7936         } else
7937                 wsc = NULL;
7938         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
7939                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7940                                          ssid ? ssid->ssid_len : 0);
7941
7942         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7943 }
7944
7945
7946 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7947                                           int ndef, int tag)
7948 {
7949         struct wpabuf *wsc, *p2p;
7950         struct wpa_ssid *ssid;
7951         u8 go_dev_addr[ETH_ALEN];
7952         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7953
7954         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7955                 return NULL;
7956
7957         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7958             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7959                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7960                 return NULL;
7961
7962         if (cli_freq == 0) {
7963                 wsc = wps_build_nfc_handover_sel_p2p(
7964                         wpa_s->parent->wps,
7965                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
7966                         DEV_PW_NFC_CONNECTION_HANDOVER,
7967                         wpa_s->conf->wps_nfc_dh_pubkey,
7968                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
7969         } else
7970                 wsc = NULL;
7971         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
7972                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7973                                          ssid ? ssid->ssid_len : 0);
7974
7975         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7976 }
7977
7978
7979 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
7980                                    struct p2p_nfc_params *params)
7981 {
7982         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
7983                    "connection handover (freq=%d)",
7984                    params->go_freq);
7985
7986         if (params->go_freq && params->go_ssid_len) {
7987                 wpa_s->p2p_wps_method = WPS_NFC;
7988                 wpa_s->pending_join_wps_method = WPS_NFC;
7989                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
7990                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
7991                           ETH_ALEN);
7992                 return wpas_p2p_join_start(wpa_s, params->go_freq,
7993                                            params->go_ssid,
7994                                            params->go_ssid_len);
7995         }
7996
7997         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7998                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
7999                                 params->go_freq, -1, 0, 1, 1);
8000 }
8001
8002
8003 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
8004                                   struct p2p_nfc_params *params, int tag)
8005 {
8006         int res, persistent;
8007         struct wpa_ssid *ssid;
8008
8009         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
8010                    "connection handover");
8011         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
8012                 ssid = wpa_s->current_ssid;
8013                 if (ssid == NULL)
8014                         continue;
8015                 if (ssid->mode != WPAS_MODE_P2P_GO)
8016                         continue;
8017                 if (wpa_s->ap_iface == NULL)
8018                         continue;
8019                 break;
8020         }
8021         if (wpa_s == NULL) {
8022                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
8023                 return -1;
8024         }
8025
8026         if (wpa_s->parent->p2p_oob_dev_pw_id !=
8027             DEV_PW_NFC_CONNECTION_HANDOVER &&
8028             !wpa_s->parent->p2p_oob_dev_pw) {
8029                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
8030                 return -1;
8031         }
8032         res = wpas_ap_wps_add_nfc_pw(
8033                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
8034                 wpa_s->parent->p2p_oob_dev_pw,
8035                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
8036                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
8037         if (res)
8038                 return res;
8039
8040         if (!tag) {
8041                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
8042                 return 0;
8043         }
8044
8045         if (!params->peer ||
8046             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
8047                 return 0;
8048
8049         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
8050                    " to join", MAC2STR(params->peer->p2p_device_addr));
8051
8052         wpa_s->global->p2p_invite_group = wpa_s;
8053         persistent = ssid->p2p_persistent_group &&
8054                 wpas_p2p_get_persistent(wpa_s->parent,
8055                                         params->peer->p2p_device_addr,
8056                                         ssid->ssid, ssid->ssid_len);
8057         wpa_s->parent->pending_invite_ssid_id = -1;
8058
8059         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
8060                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
8061                           ssid->ssid, ssid->ssid_len, ssid->frequency,
8062                           wpa_s->global->p2p_dev_addr, persistent, 0,
8063                           wpa_s->parent->p2p_oob_dev_pw_id);
8064 }
8065
8066
8067 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
8068                                     struct p2p_nfc_params *params,
8069                                     int forced_freq)
8070 {
8071         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
8072                    "connection handover");
8073         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8074                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
8075                                 forced_freq, -1, 0, 1, 1);
8076 }
8077
8078
8079 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
8080                                     struct p2p_nfc_params *params,
8081                                     int forced_freq)
8082 {
8083         int res;
8084
8085         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
8086                    "connection handover");
8087         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
8088                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
8089                                forced_freq, -1, 0, 1, 1);
8090         if (res)
8091                 return res;
8092
8093         res = wpas_p2p_listen(wpa_s, 60);
8094         if (res) {
8095                 p2p_unauthorize(wpa_s->global->p2p,
8096                                 params->peer->p2p_device_addr);
8097         }
8098
8099         return res;
8100 }
8101
8102
8103 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
8104                                             const struct wpabuf *data,
8105                                             int sel, int tag, int forced_freq)
8106 {
8107         const u8 *pos, *end;
8108         u16 len, id;
8109         struct p2p_nfc_params params;
8110         int res;
8111
8112         os_memset(&params, 0, sizeof(params));
8113         params.sel = sel;
8114
8115         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
8116
8117         pos = wpabuf_head(data);
8118         end = pos + wpabuf_len(data);
8119
8120         if (end - pos < 2) {
8121                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
8122                            "attributes");
8123                 return -1;
8124         }
8125         len = WPA_GET_BE16(pos);
8126         pos += 2;
8127         if (len > end - pos) {
8128                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
8129                            "attributes");
8130                 return -1;
8131         }
8132         params.wsc_attr = pos;
8133         params.wsc_len = len;
8134         pos += len;
8135
8136         if (end - pos < 2) {
8137                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
8138                            "attributes");
8139                 return -1;
8140         }
8141         len = WPA_GET_BE16(pos);
8142         pos += 2;
8143         if (len > end - pos) {
8144                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
8145                            "attributes");
8146                 return -1;
8147         }
8148         params.p2p_attr = pos;
8149         params.p2p_len = len;
8150         pos += len;
8151
8152         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
8153                     params.wsc_attr, params.wsc_len);
8154         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
8155                     params.p2p_attr, params.p2p_len);
8156         if (pos < end) {
8157                 wpa_hexdump(MSG_DEBUG,
8158                             "P2P: Ignored extra data after P2P attributes",
8159                             pos, end - pos);
8160         }
8161
8162         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
8163         if (res)
8164                 return res;
8165
8166         if (params.next_step == NO_ACTION)
8167                 return 0;
8168
8169         if (params.next_step == BOTH_GO) {
8170                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
8171                         MAC2STR(params.peer->p2p_device_addr));
8172                 return 0;
8173         }
8174
8175         if (params.next_step == PEER_CLIENT) {
8176                 if (!is_zero_ether_addr(params.go_dev_addr)) {
8177                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8178                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
8179                                 " ssid=\"%s\"",
8180                                 MAC2STR(params.peer->p2p_device_addr),
8181                                 params.go_freq,
8182                                 MAC2STR(params.go_dev_addr),
8183                                 wpa_ssid_txt(params.go_ssid,
8184                                              params.go_ssid_len));
8185                 } else {
8186                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
8187                                 "peer=" MACSTR " freq=%d",
8188                                 MAC2STR(params.peer->p2p_device_addr),
8189                                 params.go_freq);
8190                 }
8191                 return 0;
8192         }
8193
8194         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
8195                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
8196                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
8197                 return 0;
8198         }
8199
8200         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8201         wpa_s->p2p_oob_dev_pw = NULL;
8202
8203         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
8204                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
8205                            "received");
8206                 return -1;
8207         }
8208
8209         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
8210         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
8211         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
8212                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8213         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
8214                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
8215         wpa_s->p2p_peer_oob_pk_hash_known = 1;
8216
8217         if (tag) {
8218                 if (id < 0x10) {
8219                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
8220                                    "peer OOB Device Password Id %u", id);
8221                         return -1;
8222                 }
8223                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
8224                            "Device Password Id %u", id);
8225                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
8226                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8227                                 params.oob_dev_pw_len -
8228                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
8229                 wpa_s->p2p_oob_dev_pw_id = id;
8230                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
8231                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
8232                         params.oob_dev_pw_len -
8233                         WPS_OOB_PUBKEY_HASH_LEN - 2);
8234                 if (wpa_s->p2p_oob_dev_pw == NULL)
8235                         return -1;
8236
8237                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
8238                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
8239                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
8240                         return -1;
8241         } else {
8242                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
8243                            "without Device Password");
8244                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
8245         }
8246
8247         switch (params.next_step) {
8248         case NO_ACTION:
8249         case BOTH_GO:
8250         case PEER_CLIENT:
8251                 /* already covered above */
8252                 return 0;
8253         case JOIN_GROUP:
8254                 return wpas_p2p_nfc_join_group(wpa_s, &params);
8255         case AUTH_JOIN:
8256                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
8257         case INIT_GO_NEG:
8258                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
8259         case RESP_GO_NEG:
8260                 /* TODO: use own OOB Dev Pw */
8261                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
8262         }
8263
8264         return -1;
8265 }
8266
8267
8268 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
8269                              const struct wpabuf *data, int forced_freq)
8270 {
8271         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8272                 return -1;
8273
8274         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
8275 }
8276
8277
8278 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
8279                                  const struct wpabuf *req,
8280                                  const struct wpabuf *sel, int forced_freq)
8281 {
8282         struct wpabuf *tmp;
8283         int ret;
8284
8285         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8286                 return -1;
8287
8288         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
8289
8290         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
8291                           wpabuf_head(req), wpabuf_len(req));
8292         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
8293                           wpabuf_head(sel), wpabuf_len(sel));
8294         if (forced_freq)
8295                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
8296         tmp = ndef_parse_p2p(init ? sel : req);
8297         if (tmp == NULL) {
8298                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
8299                 return -1;
8300         }
8301
8302         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
8303                                                forced_freq);
8304         wpabuf_free(tmp);
8305
8306         return ret;
8307 }
8308
8309
8310 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
8311 {
8312         const u8 *if_addr;
8313         int go_intent = wpa_s->conf->p2p_go_intent;
8314         struct wpa_supplicant *iface;
8315
8316         if (wpa_s->global->p2p == NULL)
8317                 return -1;
8318
8319         if (!enabled) {
8320                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
8321                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
8322                 {
8323                         if (!iface->ap_iface)
8324                                 continue;
8325                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
8326                 }
8327                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
8328                                                  0, NULL);
8329                 if (wpa_s->p2p_nfc_tag_enabled)
8330                         wpas_p2p_remove_pending_group_interface(wpa_s);
8331                 wpa_s->p2p_nfc_tag_enabled = 0;
8332                 return 0;
8333         }
8334
8335         if (wpa_s->global->p2p_disabled)
8336                 return -1;
8337
8338         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
8339             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
8340             wpa_s->conf->wps_nfc_dev_pw == NULL ||
8341             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
8342                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
8343                            "to allow static handover cases");
8344                 return -1;
8345         }
8346
8347         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
8348
8349         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8350         wpabuf_free(wpa_s->p2p_oob_dev_pw);
8351         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8352         if (wpa_s->p2p_oob_dev_pw == NULL)
8353                 return -1;
8354         wpa_s->p2p_peer_oob_pk_hash_known = 0;
8355
8356         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
8357             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
8358                 /*
8359                  * P2P Group Interface present and the command came on group
8360                  * interface, so enable the token for the current interface.
8361                  */
8362                 wpa_s->create_p2p_iface = 0;
8363         } else {
8364                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
8365         }
8366
8367         if (wpa_s->create_p2p_iface) {
8368                 enum wpa_driver_if_type iftype;
8369                 /* Prepare to add a new interface for the group */
8370                 iftype = WPA_IF_P2P_GROUP;
8371                 if (go_intent == 15)
8372                         iftype = WPA_IF_P2P_GO;
8373                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
8374                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
8375                                    "interface for the group");
8376                         return -1;
8377                 }
8378
8379                 if_addr = wpa_s->pending_interface_addr;
8380         } else
8381                 if_addr = wpa_s->own_addr;
8382
8383         wpa_s->p2p_nfc_tag_enabled = enabled;
8384
8385         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
8386                 struct hostapd_data *hapd;
8387                 if (iface->ap_iface == NULL)
8388                         continue;
8389                 hapd = iface->ap_iface->bss[0];
8390                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
8391                 hapd->conf->wps_nfc_dh_pubkey =
8392                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
8393                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
8394                 hapd->conf->wps_nfc_dh_privkey =
8395                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
8396                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
8397                 hapd->conf->wps_nfc_dev_pw =
8398                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
8399                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
8400
8401                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
8402                         wpa_dbg(iface, MSG_DEBUG,
8403                                 "P2P: Failed to enable NFC Tag for GO");
8404                 }
8405         }
8406         p2p_set_authorized_oob_dev_pw_id(
8407                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
8408                 if_addr);
8409
8410         return 0;
8411 }
8412
8413 #endif /* CONFIG_WPS_NFC */
8414
8415
8416 static void wpas_p2p_optimize_listen_channel(struct wpa_supplicant *wpa_s,
8417                                              struct wpa_used_freq_data *freqs,
8418                                              unsigned int num)
8419 {
8420         u8 curr_chan, cand, chan;
8421         unsigned int i;
8422
8423         /*
8424          * If possible, optimize the Listen channel to be a channel that is
8425          * already used by one of the other interfaces.
8426          */
8427         if (!wpa_s->conf->p2p_optimize_listen_chan)
8428                 return;
8429
8430         if (!wpa_s->current_ssid || wpa_s->wpa_state != WPA_COMPLETED)
8431                 return;
8432
8433         curr_chan = p2p_get_listen_channel(wpa_s->global->p2p);
8434         for (i = 0, cand = 0; i < num; i++) {
8435                 ieee80211_freq_to_chan(freqs[i].freq, &chan);
8436                 if (curr_chan == chan) {
8437                         cand = 0;
8438                         break;
8439                 }
8440
8441                 if (chan == 1 || chan == 6 || chan == 11)
8442                         cand = chan;
8443         }
8444
8445         if (cand) {
8446                 wpa_dbg(wpa_s, MSG_DEBUG,
8447                         "P2P: Update Listen channel to %u based on operating channel",
8448                         cand);
8449                 p2p_set_listen_channel(wpa_s->global->p2p, 81, cand, 0);
8450         }
8451 }
8452
8453
8454 static int wpas_p2p_move_go_csa(struct wpa_supplicant *wpa_s)
8455 {
8456         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP_CSA)) {
8457                 wpa_dbg(wpa_s, MSG_DEBUG, "CSA is not enabled");
8458                 return -1;
8459         }
8460
8461         /* TODO: Add CSA support */
8462         wpa_dbg(wpa_s, MSG_DEBUG, "Moving GO with CSA is not implemented");
8463         return -1;
8464 }
8465
8466
8467 static void wpas_p2p_move_go_no_csa(struct wpa_supplicant *wpa_s)
8468 {
8469         struct p2p_go_neg_results params;
8470         struct wpa_ssid *current_ssid = wpa_s->current_ssid;
8471
8472         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
8473
8474         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz",
8475                 current_ssid->frequency);
8476
8477         /* Stop the AP functionality */
8478         /* TODO: Should do this in a way that does not indicated to possible
8479          * P2P Clients in the group that the group is terminated. */
8480         wpa_supplicant_ap_deinit(wpa_s);
8481
8482         /* Reselect the GO frequency */
8483         if (wpas_p2p_init_go_params(wpa_s, &params, 0, 0, 0, NULL)) {
8484                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Failed to reselect freq");
8485                 wpas_p2p_group_delete(wpa_s,
8486                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8487                 return;
8488         }
8489         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New freq selected for the GO (%u MHz)",
8490                 params.freq);
8491
8492         if (params.freq &&
8493             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
8494                 wpa_printf(MSG_DEBUG,
8495                            "P2P: Selected freq (%u MHz) is not valid for P2P",
8496                            params.freq);
8497                 wpas_p2p_group_delete(wpa_s,
8498                                       P2P_GROUP_REMOVAL_GO_LEAVE_CHANNEL);
8499                 return;
8500         }
8501
8502         /* Update the frequency */
8503         current_ssid->frequency = params.freq;
8504         wpa_s->connect_without_scan = current_ssid;
8505         wpa_s->reassociate = 1;
8506         wpa_s->disconnected = 0;
8507         wpa_supplicant_req_scan(wpa_s, 0, 0);
8508 }
8509
8510
8511 static void wpas_p2p_move_go(void *eloop_ctx, void *timeout_ctx)
8512 {
8513         struct wpa_supplicant *wpa_s = eloop_ctx;
8514
8515         if (!wpa_s->ap_iface || !wpa_s->current_ssid)
8516                 return;
8517
8518         wpas_p2p_go_update_common_freqs(wpa_s);
8519
8520         /*
8521          * First, try a channel switch flow. If it is not supported or fails,
8522          * take down the GO and bring it up again.
8523          */
8524         if (wpas_p2p_move_go_csa(wpa_s) < 0)
8525                 wpas_p2p_move_go_no_csa(wpa_s);
8526 }
8527
8528
8529 static void wpas_p2p_reconsider_moving_go(void *eloop_ctx, void *timeout_ctx)
8530 {
8531         struct wpa_supplicant *wpa_s = eloop_ctx;
8532         struct wpa_used_freq_data *freqs = NULL;
8533         unsigned int num = wpa_s->num_multichan_concurrent;
8534
8535         freqs = os_calloc(num, sizeof(struct wpa_used_freq_data));
8536         if (!freqs)
8537                 return;
8538
8539         num = get_shared_radio_freqs_data(wpa_s, freqs, num);
8540
8541         /* Previous attempt to move a GO was not possible -- try again. */
8542         wpas_p2p_consider_moving_gos(wpa_s, freqs, num,
8543                                      WPAS_P2P_CHANNEL_UPDATE_ANY);
8544
8545         os_free(freqs);
8546 }
8547
8548
8549 /*
8550  * Consider moving a GO from its currently used frequency:
8551  * 1. It is possible that due to regulatory consideration the frequency
8552  *    can no longer be used and there is a need to evacuate the GO.
8553  * 2. It is possible that due to MCC considerations, it would be preferable
8554  *    to move the GO to a channel that is currently used by some other
8555  *    station interface.
8556  *
8557  * In case a frequency that became invalid is once again valid, cancel a
8558  * previously initiated GO frequency change.
8559  */
8560 static void wpas_p2p_consider_moving_one_go(struct wpa_supplicant *wpa_s,
8561                                             struct wpa_used_freq_data *freqs,
8562                                             unsigned int num)
8563 {
8564         unsigned int i, invalid_freq = 0, policy_move = 0, flags = 0;
8565         unsigned int timeout;
8566         int freq;
8567
8568         wpas_p2p_go_update_common_freqs(wpa_s);
8569
8570         freq = wpa_s->current_ssid->frequency;
8571         for (i = 0, invalid_freq = 0; i < num; i++) {
8572                 if (freqs[i].freq == freq) {
8573                         flags = freqs[i].flags;
8574
8575                         /* The channel is invalid, must change it */
8576                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
8577                                 wpa_dbg(wpa_s, MSG_DEBUG,
8578                                         "P2P: Freq=%d MHz no longer valid for GO",
8579                                         freq);
8580                                 invalid_freq = 1;
8581                         }
8582                 } else if (freqs[i].flags == 0) {
8583                         /* Freq is not used by any other station interface */
8584                         continue;
8585                 } else if (!p2p_supported_freq(wpa_s->global->p2p,
8586                                                freqs[i].freq)) {
8587                         /* Freq is not valid for P2P use cases */
8588                         continue;
8589                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8590                            P2P_GO_FREQ_MOVE_SCM) {
8591                         policy_move = 1;
8592                 } else if (wpa_s->conf->p2p_go_freq_change_policy ==
8593                            P2P_GO_FREQ_MOVE_SCM_PEER_SUPPORTS &&
8594                            wpas_p2p_go_is_peer_freq(wpa_s, freqs[i].freq)) {
8595                         policy_move = 1;
8596                 }
8597         }
8598
8599         wpa_dbg(wpa_s, MSG_DEBUG,
8600                 "P2P: GO move: invalid_freq=%u, policy_move=%u, flags=0x%X",
8601                 invalid_freq, policy_move, flags);
8602
8603         /*
8604          * The channel is valid, or we are going to have a policy move, so
8605          * cancel timeout.
8606          */
8607         if (!invalid_freq || policy_move) {
8608                 wpa_dbg(wpa_s, MSG_DEBUG,
8609                         "P2P: Cancel a GO move from freq=%d MHz", freq);
8610                 eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
8611
8612                 if (wpas_p2p_in_progress(wpa_s)) {
8613                         wpa_dbg(wpa_s, MSG_DEBUG,
8614                                 "P2P: GO move: policy CS is not allowed - setting timeout to re-consider GO move");
8615                         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go,
8616                                              wpa_s, NULL);
8617                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
8618                                                wpas_p2p_reconsider_moving_go,
8619                                                wpa_s, NULL);
8620                         return;
8621                 }
8622         }
8623
8624         if (!invalid_freq && (!policy_move || flags != 0)) {
8625                 wpa_dbg(wpa_s, MSG_DEBUG,
8626                         "P2P: Not initiating a GO frequency change");
8627                 return;
8628         }
8629
8630         if (invalid_freq && !wpas_p2p_disallowed_freq(wpa_s->global, freq))
8631                 timeout = P2P_GO_FREQ_CHANGE_TIME;
8632         else
8633                 timeout = 0;
8634
8635         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Move GO from freq=%d MHz in %d secs",
8636                 freq, timeout);
8637         eloop_cancel_timeout(wpas_p2p_move_go, wpa_s, NULL);
8638         eloop_register_timeout(timeout, 0, wpas_p2p_move_go, wpa_s, NULL);
8639 }
8640
8641
8642 static void wpas_p2p_consider_moving_gos(struct wpa_supplicant *wpa_s,
8643                                          struct wpa_used_freq_data *freqs,
8644                                          unsigned int num,
8645                                          enum wpas_p2p_channel_update_trig trig)
8646 {
8647         struct wpa_supplicant *ifs;
8648
8649         eloop_cancel_timeout(wpas_p2p_reconsider_moving_go, ELOOP_ALL_CTX,
8650                              NULL);
8651
8652         /*
8653          * Travers all the radio interfaces, and for each GO interface, check
8654          * if there is a need to move the GO from the frequency it is using,
8655          * or in case the frequency is valid again, cancel the evacuation flow.
8656          */
8657         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
8658                          radio_list) {
8659                 if (ifs->current_ssid == NULL ||
8660                     ifs->current_ssid->mode != WPAS_MODE_P2P_GO)
8661                         continue;
8662
8663                 /*
8664                  * The GO was just started or completed channel switch, no need
8665                  * to move it.
8666                  */
8667                 if (wpa_s == ifs &&
8668                     (trig == WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE ||
8669                      trig == WPAS_P2P_CHANNEL_UPDATE_CS)) {
8670                         wpa_dbg(wpa_s, MSG_DEBUG,
8671                                 "P2P: GO move - schedule re-consideration");
8672                         eloop_register_timeout(P2P_RECONSIDER_GO_MOVE_DELAY, 0,
8673                                                wpas_p2p_reconsider_moving_go,
8674                                                wpa_s, NULL);
8675                         continue;
8676                 }
8677
8678                 wpas_p2p_consider_moving_one_go(ifs, freqs, num);
8679         }
8680 }
8681
8682
8683 void wpas_p2p_indicate_state_change(struct wpa_supplicant *wpa_s)
8684 {
8685         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
8686                 return;
8687
8688         wpas_p2p_update_channel_list(wpa_s,
8689                                      WPAS_P2P_CHANNEL_UPDATE_STATE_CHANGE);
8690 }
8691
8692
8693 void wpas_p2p_deinit_iface(struct wpa_supplicant *wpa_s)
8694 {
8695         if (wpa_s == wpa_s->global->p2p_init_wpa_s && wpa_s->global->p2p) {
8696                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disable P2P since removing "
8697                         "the management interface is being removed");
8698                 wpas_p2p_deinit_global(wpa_s->global);
8699         }
8700 }
8701
8702
8703 void wpas_p2p_ap_deinit(struct wpa_supplicant *wpa_s)
8704 {
8705         if (wpa_s->ap_iface->bss)
8706                 wpa_s->ap_iface->bss[0]->p2p_group = NULL;
8707         wpas_p2p_group_deinit(wpa_s);
8708 }